Abrégé

The present invention provides an air-conditioning and ventilation system which provides a high level of comfort and performs appropriate ventilation. An air-conditioning and ventilation system (100) is provided with an air conditioning unit (40) which has at least a compressor and carries out air conditioning of a room (R1), and a ventilation unit (10) which has an intake fan and an outlet fan and ventilates the room (R1), wherein if a detection value from a carbon dioxide concentration sensor (20) or a free particle measurement sensor provided to the room (R1) is at or above a first prescribed value, the ventilation unit (10) increases the amount of ventilation, and the air conditioning unit (40) increases the rotational speed of the compressor.

Classes IPC  ?

• F24F 11/77 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de l’apport en air traité, p.ex. commande de la pression pour la commande du débit d'air ou de la vitesse de l’air en commandant la vitesse de rotation des ventilateurs
• F24F 7/007 - Ventilation à écoulement forcé

Abrégé

In order to provide a highly reliable scroll compressor, etc. This scroll compressor (100) comprises: a sealed container (1); an electric motor (4); a crankshaft (3); a fixed scroll (22); an orbiting scroll (23); an orbiting bearing (13) that pivotally supports the crankshaft (3) so that the crankshaft (3) is able to rotate with respect to the orbiting scroll (23); and a frame (21) that has a through-hole (H1) for the crankshaft (3) and supports the fixed scroll (22), the scroll compressor (100) further comprising an orbiting balance weight (14) provided between the frame (21) and a mirror plate (23a) and rotating with the crankshaft (3), wherein the crankshaft (3) and the orbiting balance weight (14) are fitted together, and a gap is provided between a protruding part (31b) on the crankshaft (3) side and a fitting hole on the orbiting balance weight (14) side.

Classes IPC  ?

• F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise

Abrégé

Provided is a ventilation system for appropriately ventilating a given space. A ventilation system (100) is provided with carbon dioxide concentration sensors (21-23) for detecting the carbon dioxide concentration in a room, an air supply fan (13) for supplying air to the room, an exhaust fan (14) for exhausting air from the room, and a control device (18) for controlling the air supply fan (13) and/or the exhaust fan (14) on the basis of variations in detection values of the carbon dioxide concentration sensors (21-23).

Classes IPC  ?

• F24F 7/007 - Ventilation à écoulement forcé
• F24F 11/77 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de l’apport en air traité, p.ex. commande de la pression pour la commande du débit d'air ou de la vitesse de l’air en commandant la vitesse de rotation des ventilateurs

Abrégé

Provided is a propeller fan that can be made thinner, produces little noise, and is highly efficient. A propeller fan U1 comprises: a propeller (3) having a boss section (33) and a plurality of blades (32); and a bell mouth (8) provided on the outer circumferential side of the propeller (3). A first position (α), located closest to the suction side at the front edge portion (32a) of each blade (32), is provided in between a blade tip front edge (321) and a blade root front edge (323), such that in between the blade tip front edge (321) and the first position (α), the front edge portion (32a) forms a concave shape curving toward a blowout side, while a rear edge portion (32b) of the blade (32) forms a convex shape curving toward the blowout side.

Classes IPC  ?

• F04D 29/38 - Ailettes

Abrégé

Provided is an air conditioner that keeps an indoor heat exchanger in a clean state and further carries out air-purification. An air conditioner (100) comprises: a compressor (11); an outdoor heat exchanger (12); an expansion valve (14); an indoor heat exchanger (15); an indoor fan (16); and a control unit that causes the indoor heat exchanger (15) to function as an evaporator and that carries out a process to freeze the indoor heat exchanger (15). The control unit carries out control such that the indoor fan (16) is driven during at least part of the period of the process and the temperature of the indoor heat exchanger (15) exceeds a predetermined value when the temperature is below the freezing point. The predetermined value is a temperature below the freezing point at which gaps between fins of the indoor heat exchanger (15) are not completely blocked with frost.

Classes IPC  ?

• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire
• F24F 110/10 - Température

Abrégé

Provided is an air conditioner which puts a heat exchanger into a clean state. This air conditioner (100) comprises a compressor (11), an outdoor heat exchanger (12), an expansion valve (14), and an indoor heat exchanger (15), and also comprises a control unit which performs a process to cause the heat exchanger, i.e., the indoor heat exchanger (15) or the outdoor heat exchanger (12), to function as an evaporator, and to freeze or condense the heat exchanger, wherein the control unit performs control to raise the temperature of the heat exchanger prior to the aforementioned process.

Classes IPC  ?

• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire
• F24F 110/10 - Température
• F24F 110/12 - Température de l'air extérieur
• F24F 13/22 - Moyens pour éviter la condensation ou pour évacuer le condensat
• F24F 1/0071 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments intérieurs, p.ex. ventilo-convecteurs comportant des moyens de purification de l’air fourni

Abrégé

[Problem] To provide an air-conditioning device that achieves both increased reliability of a compressor and improved heating performance at the startup of heating operation. [Solution] A refrigeration cycle comprising an indoor unit 200 and an outdoor unit 100, wherein the outdoor unit 100 has: a refrigeration cycle that includes an expansion valve 110, a heat exchanger 114 and a compressor 108; and a control device 102 that controls the operation of the refrigeration cycle. The outdoor unit 100 is equipped with a pressure sensor 104 that measures the pressure of refrigerant flowing between the heat exchanger 114 and the compressor 108, and a temperature sensor 106 that measures the temperature of the refrigerant. When the refrigeration cycle starts heating operation, the control device 102 controls the opening of the expansion valve 110 on the basis of the degree of superheat of the refrigerant sucked into the compressor 108.

Classes IPC  ?

• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible

Abrégé

Provided is a highly reliable scroll compressor, etc., having a simple configuration. This scroll compressor (100) comprises: a sealed container (1); an electric motor (4); a crankshaft (3); a fixed scroll (21); a turning scroll (22); an upper frame (23); and a lower frame (7). The lower frame (7) has a flange (73) in at least a part of the circumferential edge thereof. A part in the vicinity of the lower end of a cylindrical chamber (11) and a part in the vicinity of the edge of a bottom chamber (13) are fixed in a state of sandwiching the flange (73) therebetween. A lateral surface groove (73a) recessed radially inward is provided to the lateral surface of the flange (73) in the circumferential direction.

Classes IPC  ?

• F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
• F04C 29/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT; POMPES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT - Parties constitutives, détails ou accessoires de pompes ou d'installations de pompage spécialement adaptées pour les fluides compressibles non couverts dans les groupes

Abrégé

[Problem] To provide an air conditioner that efficiently cleans a drain pan inside a casing. [Solution] The air conditioner is characterized by comprising an indoor heat exchanger 10 which exchanges heat with air, and a drain pan 30 which is provided below the indoor heat exchanger 10 and which receives drain water generated from the indoor heat exchanger 10, wherein the drain pan 30 has a heat insulating material 31 on a surface on the heat exchanger 10 side, and a metal member 32 is disposed in at least a part of the surface of the heat insulating material 31.

Classes IPC  ?

• F24F 13/22 - Moyens pour éviter la condensation ou pour évacuer le condensat

Abrégé

Provided is an outdoor unit for an air conditioning device, with which: pressure loss during use with an evaporator can be reduced; and high heating capability and improvements in cooling performance can be realized at low cost even under the influence of a liquid head caused by the wind speed distribution of a heat exchanger and the height of the heat exchanger.　The heat exchanger has a height of at least 1 meter and is constituted by three columns of heat exchange units that are arranged along the direction in which air flows. A first column heat exchange unit, which is on the upwind side among the heat exchange units, is disposed such that a U-shaped heat transfer pipe overlaps in a stage direction. Two columns on the downwind side are disposed such that the U-shaped heat transfer pipe straddles a second column heat exchange unit and a third column heat exchange unit. The third column heat exchange unit of an upper-side heat exchanger is connected to a gas header. The number of cooling paths connected to the gas header is greater than half the total number of stages of the heat exchanger, and is the same number of stages as the number of cooling paths connected to the gas header. The first column heat exchange unit of a lower-side heat exchanger is connected to a liquid coolant distributor. The U-shaped heat transfer pipe of the third column heat exchange unit of the lower-side heat exchanger and the U-shaped heat transfer pipe of the first column heat exchange unit of the upper-side heat exchanger are connected via a path connection pipe.

Classes IPC  ?

• F24F 1/14 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur Échangeurs de chaleur spécialement adaptés à des éléments extérieurs séparés

Abrégé

Provided is an air conditioner capable of outside air defrosting operation with outside air and maintenance of heating capacity even if the temperature of the outside air is lower than the freezing point.　In the defrosting operation mode in the heating operation, outdoor blower fans (22, 23) blow air to both of divided heat exchangers (20, 21). Furthermore, if the temperature of outdoor air is lower than the freezing point, an expansion valve (15, 16) connected to one of the divided heat exchangers (20, 21) is fully closed, and only in the heat exchanger with the expansion valve fully closed, defrosting is performed by sublimation action by outdoor air. This enables defrosting using outdoor air while continuing the heating operation even if the temperature of the outdoor air is lower than the freezing point.

Classes IPC  ?

• F25B 47/02 - Cycles de dégivrage

Abrégé

Provided is a scroll compressor, etc., having high performance and reliability. The scroll compressor comprises a closed container, a fixed scroll (22), an orbiting scroll (23), a frame (21), an electric motor, and a shaft (3). Furthermore, the scroll compressor comprises a main bearing (11) installed in a shaft insertion hole (hf), an orbiting bearing (12) installed on an orbiting shaft (23c), a slide bush (13) installed in an eccentric hole (he) on the radially outer side of the orbiting bearing (12), and a ring (14) that closes an annular gap (g1) between an upper-end part (3b) of the shaft (3) and the slide bush (13) from above. Axial-direction installation areas (Q1, Q2) of the main bearing (11) and the orbiting bearing (12) overlap at least partially.

Classes IPC  ?

• F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise

Abrégé

[Problem] To restrict not only an upper limit value but also a lower limit value of the power consumption of an air conditioner. [Solution] This air conditioner comprises a compressor, an outdoor heat exchanger, an expansion mechanism, an indoor heat exchanger, and an operation control unit for controlling the operation frequency of the compressor so that the power consumption of the air conditioner or the compressor reaches a value higher than a lower limit setting value.

Classes IPC  ?

• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
• F24F 11/47 - Réaction aux coûts énergétiques

Abrégé

The purpose of the present invention is to provide a system and method with which it is possible to minimize a temperature decrease during a dehumidification operation by each indoor unit, and in which the dehumidification capability does not decrease during low load. In an air-conditioning system: an indoor unit includes an indoor heat exchanger, a temperature detection means for detecting the indoor temperature, and a humidity detection means for detecting the indoor humidity; and an outdoor unit includes an outdoor heat exchanger and a compressor for circulating a refrigerant between the outdoor unit and the indoor unit. The air-conditioning system is provided with: a valve provided between the outdoor heat exchanger and the indoor heat exchanger; a rotation speed control means 32 for controlling the rotation speed of the compressor according to the temperature detected by the temperature detection means; and an opening degree control means 33 for controlling the opening degree of the valve according to the humidity detected by the humidity detection means.

Classes IPC  ?

• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
• F24F 11/84 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant l’apport en fluides échangeurs de chaleur aux échangeurs de chaleur au moyen de valves
• F24F 11/86 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant des compresseurs dans les circuits de pompes à chaleur ou de réfrigération

Abrégé

Provided are a system and a method which can prevent or reduce an intermittent operation and maintain comfort. This air conditioning system includes an indoor unit and an outdoor unit. The indoor unit includes: a heat exchanger; an indoor temperature detection means for detecting an indoor temperature; and a valve for adjusting the flow rate of a refrigerant flowing in a refrigeration cycle. The outdoor unit includes: a heat exchanger; a compressor; a frequency detection means for detecting the operation frequency of the compressor; and a valve for adjusting the flow rate of the refrigerant flowing in the refrigeration cycle. The air conditioning system further includes a control means for controlling the opening degree of the valve of the indoor unit depending on the indoor temperature detected by the indoor temperature detection means, the amount of change in the indoor temperature over a predetermined period of time, and the operation frequency detected by the frequency detection means.

Classes IPC  ?

• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible

Abrégé

[Problem] An objective of the present invention is to distribute a refrigerant at an appropriate liquid refrigerant flow ratio. [Solution] The present invention is provided with a heat exchanger having a plurality of flow paths for a refrigerant, and a distributor which distributes the refrigerant to the flow paths of the heat exchanger, wherein: the distributor has an inflow pipe through which the refrigerant flows into a housing of the distributor, and a plurality of outflow pipes through which the refrigerant in the housing flows out; and each of the plurality of outflow pipes has a first pipe, which has a first opening in which the proportions of a gas refrigerant and a liquid refrigerant flowing out therefrom changes in accordance with the height of a gas-liquid interface in the housing, a second pipe which extends from inside the housing to outside the housing, and a connection section which connects the first pipe and the second pipe.

Classes IPC  ?

• F25B 41/00 - Circulation du fluide

Abrégé

Provided is a highly reliable air conditioner that produces a sanitary state in an indoor heat exchanger. An air conditioner (100) is equipped with a refrigerant circuit (Q), and is equipped with a bypass pipe (W) for guiding a portion of the refrigerant condensed in an outdoor heat exchanger (2) to the suction side of a compressor (1), a bypass expansion valve (7) provided in the bypass pipe (W), and a control unit. When an indoor heat exchanger (10) is in the process of freezing or condensing, the control unit controls an indoor expansion valve (12) on the basis of the temperature of the indoor heat exchanger (10), and controls the bypass expansion valve (7) on the basis of the discharge temperature of the compressor (1).

Classes IPC  ?

• F25B 41/06 - Etrangleurs d'écoulement, p.ex. tubes capillaires; Dispositions de ceux-ci
• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire
• F24F 11/84 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant l’apport en fluides échangeurs de chaleur aux échangeurs de chaleur au moyen de valves

Abrégé

Provided is a highly reliable air conditioner that keeps an outdoor heat exchanger clean. A control unit (30) for an air conditioner (100) performs, as first control after processing to cause an outdoor heat exchanger (13) to function as an evaporator to freeze or condense the outdoor heat exchanger (13), control to increase the rotational speed of an outdoor fan (14) relative to that during the above processing while driving a compressor (11) or while bringing the compressor (11) into a stopped state, control to reduce the rotational speed of the compressor (11) relative to that during the above processing while driving the compressor (11), or control to increase the opening degree of an expansion valve (15) relative to that during the above processing while driving the compressor (11).

Classes IPC  ?

• F24F 11/86 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant des compresseurs dans les circuits de pompes à chaleur ou de réfrigération
• F24F 11/41 - Dégivrage; Prévention du gel
• F24F 11/871 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant l’absorption ou la restitution de chaleur dans des éléments extérieurs en commandant des ventilateurs extérieurs

Abrégé

An air conditioner (A) comprises a room-temperature-sensing means (51) that senses the temperature of a room, a person-sensing sensor (110) that senses a person within the room, and a control unit (60) having an automatic turn-off function for stopping operation when no persons can be detected within a prescribed period of time by the person-sensing sensor (110). The control unit (60) disables the automatic turn-off function when the room temperature is outside of a prescribed automatic turn-off permission range (is within an automatic turn-off prohibition region) while the automatic turn-off function is enabled.

Classes IPC  ?

• F24F 11/49 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance en assurant un fonctionnement correct, p.ex. par des essais ou par des contrôles de la configuration
• F24F 11/65 - Traitement électronique pour la sélection d'un mode de fonctionnement
• F24F 110/10 - Température
• F24F 120/10 - Occupation

Abrégé

This air conditioner (400) comprises: a wireless LAN module (300) which pairs with a router (21) via a wireless communication path and communicates with the paired router (21); a storage unit (440) which stores connection information for connecting to the paired router (21); and a control unit (410) which transitions to a pairing mode for connecting to a desired router, when connection information (441) is not stored in the storage unit (440) after the power is turned on, and does not transition to the pairing mode, when connection information (441) is stored in the storage unit (440).

Classes IPC  ?

• F24F 11/58 - Commande à distance par internet

Abrégé

Provided is an air conditioner in which a plurality of indoor heat exchangers are properly cleaned. An air conditioner (100) comprises: a refrigerant circuit (Q) that is formed by connecting via piping an outdoor unit (Uo) having a compressor (1) and an outdoor heat exchanger (2), and a plurality of indoor units (U1, U2, U3, U4) each having an indoor expansion valve (12) and an indoor heat exchanger (10); and a control unit that controls at least the compressor (1) and the plurality of indoor expansion valves (12). If there is an indoor unit that satisfies predetermined conditions among the plurality of indoor units (U1, U2, U3, U4), the control unit performs the processing for freezing or condensing the indoor heat exchanger (10) of the indoor unit, and in the other indoor units that do not satisfy the predetermined conditions, the processing is not performed, the predetermined conditions being related to the availability of the processing.

Classes IPC  ?

• F24F 11/43 - Dégivrage; Prévention du gel des éléments intérieurs
• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire
• F24F 11/54 - Aménagements de commande ou de sécurité caractérisés par des interfaces utilisateurs ou par la communication utilisant une unité de commande centrale connectée à des sous-unités de commande
• F24F 11/61 - Aménagements de commande ou de sécurité caractérisés par des interfaces utilisateurs ou par la communication utilisant des minuteurs
• F24F 11/89 - Aménagements ou montage des dispositifs de commande ou de sécurité
• F24F 13/22 - Moyens pour éviter la condensation ou pour évacuer le condensat
• F24F 1/0059 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments intérieurs, p.ex. ventilo-convecteurs caractérisés par des échangeurs de chaleur

Abrégé

This air conditioner has a plurality of indoor units requiring different amounts of time for a freezing step. In order to execute a cleaning operation for cleaning the surface of each indoor heat exchanger, a control device has a function of controlling a freezing cycle through a compressor, an outdoor heat exchanger, an expansion valve, and the indoor heat exchanger in sequence. The control device executes, as the cleaning operation, freezing of the indoor heat exchanger, defrosting of the indoor heat exchanger, and drying of the indoor heat exchanger in this order. During the freezing of indoor heat exchangers, the freezing step is executed on the indoor units in descending order of the amount of time required therefor. For an indoor unit which requires the shortest amount of time for the freezing step, start of the freezing step is delayed such that the freezing step ends simultaneously with the freezing step for an indoor unit which requires a longer amount of time.

Classes IPC  ?

• F24F 11/43 - Dégivrage; Prévention du gel des éléments intérieurs
• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire
• F24F 11/54 - Aménagements de commande ou de sécurité caractérisés par des interfaces utilisateurs ou par la communication utilisant une unité de commande centrale connectée à des sous-unités de commande
• F24F 11/61 - Aménagements de commande ou de sécurité caractérisés par des interfaces utilisateurs ou par la communication utilisant des minuteurs
• F24F 13/22 - Moyens pour éviter la condensation ou pour évacuer le condensat
• F24F 1/0059 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments intérieurs, p.ex. ventilo-convecteurs caractérisés par des échangeurs de chaleur

Abrégé

Provided is an air conditioner in which energy consumption during cleaning of a plurality of indoor heat exchangers is reduced. An air conditioner (100) comprises: a refrigerant circuit (Q) in which an outdoor unit (Uo) having a compressor (1) and an outdoor heat exchanger (2), and a plurality of indoor units (U1, U2, U3, U4) having an indoor expansion valve (12) and an indoor heat exchanger (10), are connected via piping; and a control unit for controlling at least the compressor (1) and the plurality of indoor expansion valves (12). Until a prescribed indoor unit (U1) included in the plurality of indoor units (U1, U2, U3, U4) starts a process for causing the indoor heat exchanger (10) to carry out freezing or condensing, the control unit does not start the process in the other indoor units (U2, U3, U4).

Classes IPC  ?

• F24F 11/43 - Dégivrage; Prévention du gel des éléments intérieurs
• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire
• F24F 11/59 - Commande à distance pour le préréglage
• F24F 11/61 - Aménagements de commande ou de sécurité caractérisés par des interfaces utilisateurs ou par la communication utilisant des minuteurs
• F24F 11/62 - Aménagements de commande ou de sécurité caractérisés par le type de commande ou par le traitement interne, p.ex. utilisant la logique floue, la commande adaptative ou l'estimation de valeurs
• F24F 13/22 - Moyens pour éviter la condensation ou pour évacuer le condensat
• F24F 1/0059 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments intérieurs, p.ex. ventilo-convecteurs caractérisés par des échangeurs de chaleur

Abrégé

[Problem] To store a suction grill that is raised and lowered, regardless of the installation direction of the suction grill. [Solution] An indoor unit 100 of this ceiling-embedded air conditioner comprises: a fan 105 for circulating indoor air; a fan motor 106; a heat exchanger 103 through which a heat exchange medium is passed to exchange heat with indoor air; and a raising/lowering motor 113 for driving a suspension wire that allows a suction grill to be raised and lowered. The indoor unit 100 has: a decorative panel 107 that is disposed on the indoor side of the indoor unit 200 and provided with wire guide fixing portions which are formed so as to protrude toward an inner opening that is defined by a continuously extended edge for allowing indoor air to flow; and the suction grill that is attached to the decorative panel 107 and formed adjacent to the blowout port of the decorative panel 107. The plurality of wire guide fixing portions 107a are arranged so that a corner of the inner opening is located therebetween.

Classes IPC  ?

• F24F 13/20 - Enveloppes ou couvercles
• F24F 1/0047 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments intérieurs, p.ex. ventilo-convecteurs caractérisés par des dispositions de montage fixés dans le ou au plafond

Abrégé

[Problem] To provide a ceiling-mounted embedded-type air conditioner. [Solution] The present ceiling-mounted embedded-type air conditioner includes: an indoor unit 100 provided with a fan 105, a fan motor 106, and a heat exchanger 103; a decorative panel 107 attached to the indoor unit 100 so as to face the air-conditioned space; and a grille 109 attached to the decorative panel 107. The grille 109 extends to a position neighboring an outlet 108 formed in the decorative panel 107, and at least one end of the grille 109 is provided with a dummy grille 109a that is a separate body from the grille 109 and that neighbors the outlet 108.

Classes IPC  ?

• F24F 13/20 - Enveloppes ou couvercles
• F24F 1/0047 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments intérieurs, p.ex. ventilo-convecteurs caractérisés par des dispositions de montage fixés dans le ou au plafond

Abrégé

This air-conditioning system is equipped with a compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger, and comprises: an acquisition unit that acquires the current value or power value, refrigerant suction pressure, refrigerant discharge pressure, refrigerant discharge temperature, and rotational speed of the compressor; an estimation unit that estimates the current value or power value of the compressor from the time variations in the refrigerant suction pressure, refrigerant discharge pressure, refrigerant discharge temperature, and rotational speed; and an output unit that outputs information relating to the deterioration of the compressor on the basis of the relationship between the estimated current value estimated by the estimation unit and the time variations in the actual current values acquired by the acquisition unit or the relationship between the estimated power value estimated by the estimation unit and the time variations in the actual power values acquired by the acquisition unit.

Classes IPC  ?

• F24F 11/38 - Diagnostic des défaillances
• F24F 11/88 - Aspects électriques, p.ex. circuits
• F24F 140/00 - Entrées de commandes relatives aux états du système

Abrégé

Provided are: an air conditioning device capable of increasing the air intake surface area of heat exchangers used in a top flow-type outdoor unit; and an outdoor unit used in the air conditioning device.　The heat exchangers that constitute a top flow-type outdoor unit are disposed side by side to be divided into a plurality of unit heat exchangers 30U, the unit heat exchangers 30U are disposed so as to extend vertically from a bottom mounting plate 31 of the housing of the outdoor unit in a direction from the bottom mounting plate 31 toward an outdoor fan, the cross-section of each of the unit heat exchangers 30U orthogonal to the vertical direction with respect to the bottom mounting plate 31 is formed by a linear first side 32 and a pair of linear second sides 33 which are connected in a bent manner to both sides of the first side and have lengths greater than the length of the first side, gaps are formed between the mutually facing second sides 33 of the unit heat exchangers 30U neighboring each other, and the first sides 32 are aligned along the long side of the bottom mounting plate 31.

Classes IPC  ?

• F24F 1/16 - Leur agencement ou leur montage
• F24F 1/18 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur Échangeurs de chaleur spécialement adaptés à des éléments extérieurs séparés caractérisés par leur forme
• F24F 1/46 - Agencements des composants dans les éléments extérieurs séparés
• F24F 1/50 - Agencements des composants dans les éléments extérieurs séparés caractérisés par l'écoulement d'air, p.ex. l'écoulement d'air au niveau de l'orifice d'admission ou de l'orifice de sortie l'air de sortie étant ascendant

Abrégé

A scroll compressor (1) is provided with a fixed scroll (5) having a spiral lap (5c), an orbiting scroll (6) having a spiral lap (6a) engaging with the lap of the fixed scroll, a frame (9) supporting the fixed scroll, and a sealed container (2) accommodating the fixed scroll, the orbiting scroll, and the frame. The sealed container includes a cylindrical case (2a) and a lid chamber (2b) disposed on the case. Each of the fixed scroll and the frame has a flange portion (a fixed scroll flange portion (5b) and a frame flange portion (9b)) which is held between the lid chamber and the case and is fixed with respect to the sealed container. The flange portion of the fixed scroll or the flange portion of the frame is formed with a side surface groove (5i) or (9c), or a step portion (5j) or (9e) on the end plate side contacting each at the outer-most peripheral portion.

Classes IPC  ?

• F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise

Abrégé

This scroll compressor is provided with a sealed container, a frame, a fixed scroll, a turning scroll, and a crank shaft. Further provided are: a turning shaft disposed on the anti-wrap side of the turning scroll; a main shaft section disposed on the crank shaft; an eccentric hole into which the turning shaft is inserted; a turning shaft bearing disposed between the turning shaft and the eccentric hole; a main shaft bearing disposed between the main shaft section of the crank shaft and the frame, at roughly the same axial position as the turning shaft bearing; a main shaft section upper-end oil supply path formed between an upper-end surface of the main shaft section and a back surface of the turning scroll; a seal member disposed between the frame and an end-plate back surface of the turning scroll, more toward the outer periphery side than the main shaft bearing; a crank shaft oil supply path, formed in the crank shaft and communicating with a base section of the eccentric hole; and an oil reservoir section. Lubricating oil in the oil reservoir section is supplied to the eccentric hole via the crank shaft oil supply path, and after nearly all oil that has lubricated the turning shaft bearing has passed through the main shaft section upper-end oil supply path, the oil flows in one direction downward from an upper-end section of the main shaft bearing.

Classes IPC  ?

• F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
• F04C 29/02 - Lubrification; Séparation du lubrifiant

Abrégé

This scroll compressor comprises a hermetic container, a frame, a fixed scroll, an orbiting scroll, and a crank shaft. The scroll compressor also comprises: a main shaft part provided to an orbiting scroll side end section of the crank shaft; an orbiting shaft provided to protrude toward a counter lap side of the orbiting scroll; an eccentric hole which is provided in a main shaft part end section of the crank shaft and into which the orbiting shaft is inserted; an orbiting shaft bearing provided between the orbiting shaft and the eccentric hole; a main shaft bearing which is provided between the crank shaft and the frame and provided at substantially the same position in the axial direction as the orbiting shaft bearing, and which supports the main shaft part of the crank shaft; and an orbiting support part which is provided to an orbiting scroll side end section of the crank shaft and which supports the back surface of the orbiting scroll. The crank shaft is configured to be movable in the axial direction as far as the position where the orbiting support part supports the orbiting scroll, and is configured to press the back surface of the orbiting scroll via the orbiting support part by using a pressure differential in the axial direction acting on the crank shaft.

Classes IPC  ?

• F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise

Abrégé

This scroll compressor is provided with a closed container, a frame, a stationary scroll, an orbiting scroll, and a crankshaft. The invention is also provided with: a rotating shaft provided so as to protrude out to an anti-lap side of the orbiting scroll; an eccentric hole which is provided to an end section of the crankshaft and into which the rotating shaft is inserted; a slewing bearing provided between the rotating shaft and the eccentric hole; a main bearing that is provided between the crankshaft and the frame and substantially at the same position in the axial direction as the slewing bearing; a shaft thrust plate provided to the end part of the crankshaft; a thrust bearing that is provided to the frame and slides with the shaft thrust plate to support a thrust force acting on the crankshaft; and an oil groove provided to a surface that slides with the thrust bearing in the shaft thrust plate. The oil groove is formed in the radial direction at a location within 180° forward in the rotating direction of the crankshaft from a 0° location, where 0° is the direction of the eccentric hole in the crankshaft.

Classes IPC  ?

• F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise

Abrégé

Provided is a distribution device with which it is possible to distribute a refrigerant to heat transfer tubes at a smaller size than that of the distribution device (main header and sub-header) of Patent Document 1, and to equalize the distribution of the refrigerant. The distribution device comprises: a distribution unit for distributing a refrigerant towards each of a plurality of vertically positioned heat transfer tubes; and a refrigerant channel part in which there are formed a plurality of channels connected to individual first ends of each of the plurality of heat transfer tubes, the plurality of channels channeling the refrigerant distributed by the distribution unit to each of the plurality of heat transfer tubes. The distribution unit is provided with: a first plate having at least one refrigerant inflow port; a second plate having at least one opening, which has an opening area greater than the opening area of the refrigerant inflow port of the first plate; and a third plate having a collision region provided at a position facing the refrigerant inflow port, and a plurality of holes provided at positions corresponding to each of the plurality of channels.

Classes IPC  ?

• F25B 39/00 - Evaporateurs; Condenseurs
• F28F 9/02 - Boîtes de distribution; Plaques d'extrémité

Abrégé

Provided are a compressor and the like in which outflow of lubricating oil is suppressed. A compressor (100) is provided with: an electric motor (7) including a stator (7a) and a rotor (7b); a crankshaft (4) which rotates integrally with the rotor (7b); a compression mechanism unit (2) which compresses a refrigerant concomitant with the rotation of the crankshaft (4); an arc-shaped or cylindrical balance weight (12) situated on the rotor (7b); and a hermetically sealed container (1) in which the lubricating oil is sealed. The balance weight (12) has a plurality of notched portions which are recessed radially inward from an outer circumferential surface, wherein the plurality of notched portions are each provided in the circumferential direction of the balance weight (12), and open in a space (G1) inside the hermetically sealed container (1).

Classes IPC  ?

• F04C 29/02 - Lubrification; Séparation du lubrifiant
• F04B 39/04 - Mesures pour éviter que le lubrifiant ne contamine le fluide pompé
• F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise

Abrégé

[Problem] To remove foreign matter dissolved in refrigeration oil without lowering the operating efficiency of an air conditioner. [Solution] The present invention comprises: a recessed reservoir that is connected to the gas flow path of a refrigeration cycle, which is provided with a compressor, an expansion mechanism, an evaporator, and a condenser and circulates a refrigerant containing at least refrigeration oil, and stores a mixture of the liquid-state refrigerant and refrigeration oil, or the liquid-state refrigeration oil; and a capture material that is housed in the reservoir and captures foreign matter contained in the mixture of the liquid-state refrigerant and the refrigeration oil or in the liquid-state refrigeration oil.

Classes IPC  ?

• F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
• F25B 43/00 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur
• F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur pour la séparation des lubrifiants du frigorigène

Abrégé

Provided is a novel rotary compressor having increased strength of an upper end plate and thus achieving increased mechanical reliability. An upper end plate 22A has an outer shape formed by: a first arc forming a plurality of fixed regions 32A to 32C welded to a tubular body 14, the first arc being concentric with the center C of the tubular body 14 and having a radius substantially the same as the radius of an inner wall of the tubular body 14; and a sectoral second arc forming connecting sides 33A to 33C connecting fixed region end portions 35A to 35C of adjacent fixed regions 34A to 34C, the second arc being formed by connecting to the center C of the tubular body 14. The radius of the second arc is greater than the radius of the first arc, and the second arc is an arc protruding toward the inner wall of the tubular body 14 and forming a passing hole 37A with respect to the inner wall of the tubular body 14. Because the connecting sides forming the outer peripheral edge of a compression mechanism holding unit are arc-shaped, formation of a shape-varying portion having a stress concentration is prevented. Accordingly, the strength of the upper end plate is increased and higher mechanical reliability is achieved. Further, because the connecting sides forming the outer peripheral edge of the compression mechanism holding unit are arc-shaped, it is possible to enlarge the compression mechanism portion without changing the inner diameter of a sealing container, and to increase the ejected flow volume.

Classes IPC  ?

• F04C 29/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT; POMPES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT - Parties constitutives, détails ou accessoires de pompes ou d'installations de pompage spécialement adaptées pour les fluides compressibles non couverts dans les groupes

Abrégé

The present invention enables suitable control for an outdoor unit on the basis of the positional relationship between the outdoor unit of an air conditioner and a surrounding obstacle. To this end, a control unit (10) of this air conditioner (900) comprises: an ambient environment estimating unit (14) that, on the basis of physical amounts (IF, VF), calculates an evaluation value that changes in accordance with the distance between an outdoor unit housing and the obstacle; a fan motor rotation detecting unit (12) that detects the rotation speed of a fan motor (966); and operation control units (16, 18, 20) that control the operation of a motor driving unit (122) or a compressor (950) on the basis of the evaluation value.

Classes IPC  ?

• F24F 11/86 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant des compresseurs dans les circuits de pompes à chaleur ou de réfrigération
• F24F 11/871 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant l’absorption ou la restitution de chaleur dans des éléments extérieurs en commandant des ventilateurs extérieurs
• F24F 140/00 - Entrées de commandes relatives aux états du système

Abrégé

Provided is a compressor, for example, having high performance and reliability. A compressor (100) comprises an upper bearing (5c) and a lower bearing (5d) of which at least one is provided with an oil pocket (h10) in a surface facing a cylinder chamber. When the rotational angle of a roller (5b) positioned at the top dead center in a cylinder (5a) is 0°, in a state in which the rotational angle of the roller (5b) is 0°, the oil pocket (h10) is positioned on the radially inner side of the roller (5b). In a state in which the rotational angle of the roller (5b) is 180°, the oil pocket (h10) is positioned between the roller (5b) and the cylinder (5a).

Classes IPC  ?

• F04C 18/356 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles possédant les caractéristiques couvertes par au moins deux des groupes , , , , ou par l'un de ces groupes en combinaison avec un autre type de mouvement entre les organes coopérants ayant à la fois le mouvement défini dans l'un des groupes ou et un mouvement alternatif relatif entre les organes coopérants les organes obturateurs ayant un mouvement alternatif par rapport à l'organe externe
• F04C 29/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT; POMPES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT - Parties constitutives, détails ou accessoires de pompes ou d'installations de pompage spécialement adaptées pour les fluides compressibles non couverts dans les groupes

Abrégé

In some examples, a co-rotating scroll compressor includes a driver scroll having an axis aligned with the main axis and having a spiral involute; an idler scroll having an axis offset from the main axis and having a spiral involute intermeshed with the spiral involute of the driver scroll; an Oldham coupling disposed between the driver scroll and idler scroll; an idler scroll shaft hub fixed to the lower cap and having an axis aligned with the idler scroll axis and having a drive flat, a hub of the idler scroll is disposed on the idler scroll shaft hub fixed to the lower cap.

Classes IPC  ?

• F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
• F04C 18/08 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement extérieur, c. à d. avec un engagement des organes coopérants semblable à celui d'engrenages dentés
• F04C 29/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT; POMPES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT - Parties constitutives, détails ou accessoires de pompes ou d'installations de pompage spécialement adaptées pour les fluides compressibles non couverts dans les groupes

Abrégé

The purpose of the present invention is to provide a system that restricts the remote control of air conditioners via a network, and also provide an information processing device, an air conditioner, a method, and a program. The present invention is a system which remotely controls an air conditioner and is characterized in that: the system includes a restriction means for restricting the remote control of the air conditioner according to the state of the air conditioner; and the restriction means restricts the remote control of the air conditioner when the maintenance/management of the air conditioner is being performed. Furthermore, the air conditioner is characterized by switching to a mode in which remote control is not accepted when the maintenance/management is being performed.

Classes IPC  ?

• F24F 11/58 - Commande à distance par internet
• F24F 11/52 - Aménagements pour l’indication, p.ex. écrans

Abrégé

[Problem] To provide an air conditioner, a program, and a method for displaying the power supply status of a communication module with improved user-friendliness. [Solution] This air conditioner, which is equipped with a wireless communication module 240 and can be remotely controlled via a network, includes: a power supply control unit 360 that controls the supply of power to the wireless communication module 240; and an indicator control unit 340 that indicates whether remote control via the network is on or off.

Classes IPC  ?

• F24F 11/52 - Aménagements pour l’indication, p.ex. écrans
• F24F 11/49 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance en assurant un fonctionnement correct, p.ex. par des essais ou par des contrôles de la configuration
• F24F 11/56 - Commande à distance

Abrégé

Provided are an indoor unit, an air conditioning device, an air conditioning system, and a program that make it possible to execute operation on the basis of respective reservations that have been received from devices of different types. The indoor unit comprises: a receiving means for receiving reservations for operation from two or more devices; a setting means for setting the reservations for operation for respective types of devices; and a control means for controlling the indoor unit in accordance with reservation content of the reservations for operation that have been set for each of the types.

Classes IPC  ?

• F24F 11/52 - Aménagements pour l’indication, p.ex. écrans
• F24F 11/526 - Aménagements pour l’indication, p.ex. écrans émettant des signaux audibles
• F24F 11/58 - Commande à distance par internet
• F24F 11/59 - Commande à distance pour le préréglage

Abrégé

Provided are an outdoor unit, a system, and a program that do not limit the opportunity to simultaneously perform cooling and heating operations. The outdoor unit comprises: a receiving means which is connected to a plurality of indoor units, and receives information on an operating state from one of the plurality of indoor units; a switching means which switches the operating state of the outdoor unit in accordance with the received information; a control means which controls the outdoor unit to operate in cooperation with one indoor unit, when the operating state of the outdoor unit is switched; and a transmission means which is installed in the same space as one indoor unit and transmits an operation instruction to an apparatus that adjusts the temperature.

Classes IPC  ?

• F24F 11/80 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni
• F24F 11/54 - Aménagements de commande ou de sécurité caractérisés par des interfaces utilisateurs ou par la communication utilisant une unité de commande centrale connectée à des sous-unités de commande
• F24F 11/67 - Basculement entre les modes de chauffage et de refroidissement

Abrégé

Provided are an electric circuit body and the like for properly suppressing noise. The electric circuit body (100) is provided with: a noise filter board (10) mounted with a noise filter circuit (11) and connected to an AC power supply (E); an inverter board (20) mounted with a power conversion circuit such as, for example, an inverter circuit (24) and having the input side connected to the noise filter board (10) via first wires (fa, fb, fc) and the output side connected to a motor (M) via second wires (gu, gv, gw); and a first ring core (30) around which the first wires (fa, fb, fc) are wound.

Classes IPC  ?

• H02M 1/12 - Dispositions de réduction des harmoniques d'une entrée ou d'une sortie en courant alternatif
• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

[Problem] To provide an outdoor unit that can efficiently remove dust. [Solution] This outdoor unit is characterized by comprising a blower fan 13 that is provided with a plurality of blades 13a and blows air to the front by rotating in a first rotational direction and to the rear by rotating in a second rotational direction different from the first rotational direction, and a bell mouth 14 that has a first opening provided in the front, a second opening provided in the rear, and a side part connecting the first opening and the second opening, is disposed radially outside of the blower fan 13, and adjusts the flow of air generated by the blower fan 13, the bell mouth 14 being disposed such that the ratio of the portion of the bell mouth 14 overlapping the blades 13a in the front-rear direction is at least one-third relative to the dimension of the blades 13a in the front-rear direction and the rear end part of the bell mouth 14 does not to extend further than the rear end parts of the blades 13a.

Classes IPC  ?

• F24F 1/48 - Agencements des composants dans les éléments extérieurs séparés caractérisés par l'écoulement d'air, p.ex. l'écoulement d'air au niveau de l'orifice d'admission ou de l'orifice de sortie

Abrégé

In some examples, a scroll compressor including an orbiting scroll and a fixed scroll includes a main frame that houses an axial cylinder to provide axial compliance between the fixed and orbiting scrolls. Intermediate pressure gas may be passed to a back chamber below the axial cylinder to provide an upward thrust force against the orbiting scroll plate. The axial cylinder may have a separate piston thrust plate. A counterweight and counterweight guide plate may be disposed within the axial cylinder to provide additional radial compliance.

Classes IPC  ?

• F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise

Abrégé

The present invention addresses the problem of providing an air conditioner that achieves both reduction of discomfort experienced by a user and suppression of microbial growth. To address this problem, provided is an air conditioner 1 equipped with an indoor unit 3, which is installed in a room and includes an indoor heat exchanger 31, the air conditioner 1 comprising an operation control device 50 that performs heating operation for maintaining the interior of the indoor unit 3 at a predetermined temperature or higher and a predetermined humidity or lower for a predetermined time. The air conditioner 1 is equipped with a sensor 34 that measures the temperature, or the temperature and humidity, in the room where the indoor unit 3 is installed, and the operation control device 50 is configured to perform heating operation on the basis of the temperature and humidity in the room.

Classes IPC  ?

• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire
• F24F 110/10 - Température
• F24F 110/20 - Humidité

Abrégé

Provided is an air conditioner that keeps an outdoor heat exchanger clean. The air conditioner (100) comprises: a refrigerant circuit (Q) having a compressor (11), an indoor heat exchanger 16, an expansion valve (15), and an outdoor heat exchanger 12; and a control unit that controls at least the compressor (11) and the expansion valve (15). The control unit performs first processing for freezing or condensing the lower part of the outdoor heat exchanger (12). This ensures that the outdoor heat exchanger (12) of the air conditioner (100) is in a clean state.

Classes IPC  ?

• F24F 11/42 - Dégivrage; Prévention du gel des éléments extérieurs
• F24F 1/14 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur Échangeurs de chaleur spécialement adaptés à des éléments extérieurs séparés
• F24F 11/49 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance en assurant un fonctionnement correct, p.ex. par des essais ou par des contrôles de la configuration

Abrégé

This hermetic compressor comprises a main bearing that supports a main shaft part of a rotating shaft that drives a compression mechanism part, a main frame that accommodates the main bearing, an electric motor that drives the rotating shaft, an auxiliary bearing that is disposed on a counter-main-frame side of the electric motor and that supports an auxiliary shaft part of the rotating shaft, a sub frame that accommodates the auxiliary bearing, and a hermetic container that accommodates the main frame and the sub frame. The sub frame has an auxiliary bearing accommodation part that is formed on an inner peripheral side of the sub frame and that accommodates the auxiliary bearing, a plurality of press-in parts formed on an outer peripheral side of the sub frame and pressed into the hermetic container, and a plurality of auxiliary-bearing-holding beams connecting the auxiliary bearing accommodation part and the press-in parts, and the sub frame is further provided with a press-in-part-connecting beam that connects the plurality of provided press-in parts to each other in a circumferential direction.

Classes IPC  ?

• F04C 29/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT; POMPES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT - Parties constitutives, détails ou accessoires de pompes ou d'installations de pompage spécialement adaptées pour les fluides compressibles non couverts dans les groupes

Abrégé

This air conditioning device estimates the time of arrival of a user to a space air-conditioned by the air conditioning device. An operation schedule for the air conditioning device before the estimated arrival time is determined on the basis of the temperature and/or humidity of the air-conditioned space, the estimated arrival time, and the target value for the degree of comfort at the estimated arrival time. The operation of the air conditioning device is controlled on the basis of the operation schedule.

Classes IPC  ?

• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire
• F24F 11/47 - Réaction aux coûts énergétiques
• F24F 11/56 - Commande à distance
• F24F 11/61 - Aménagements de commande ou de sécurité caractérisés par des interfaces utilisateurs ou par la communication utilisant des minuteurs
• F24F 11/64 - Traitement électronique utilisant des données mémorisées au préalable

Abrégé

Disclosed is an air conditioner provided with an indoor heat exchanger in the interior thereof. The air conditioner comprises a humidity sensing unit for sensing the humidity of air, and a control unit for executing a drying operation for drying an indoor unit interior in response at least to when a cumulative duration, during which the humidity has satisfied a predetermined condition during a halt of air conditioning operation, has surpassed a predetermined amount of time. The invention is characterized in that the predetermined duration is a value greater than 24 hours and up to 192 hours.

Classes IPC  ?

• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire
• F24F 11/64 - Traitement électronique utilisant des données mémorisées au préalable
• F24F 11/65 - Traitement électronique pour la sélection d'un mode de fonctionnement
• F24F 11/79 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de l’apport en air traité, p.ex. commande de la pression pour la commande de la direction de l’air fourni
• F24F 110/10 - Température
• F24F 110/20 - Humidité

Abrégé

This scroll compressor comprises a fixed scroll, a revolving scroll that meshes with the fixed scroll to form an intake chamber or a compression chamber, a first space that is provided to a back-surface center side of the revolving scroll and that has a pressure close to a discharge pressure, and a second space that is provided to an outer peripheral side of the first space and that has an intermediate pressure. The scroll compressor also comprises a circumferential groove extending in a circumferential direction and formed in either an end plate surface in the fixed scroll or an end plate surface serving as a sliding surface in the revolving scroll, and a passage that is provided to the end plate of the revolving scroll and that is for supplying lubricating oil in the first space to the circumferential groove, the circumferential groove being provided to a position where the end plate of the revolving scroll most strongly contacts the end plate surface of the fixed scroll in proximity to a crank angle where a load acting on the revolving scroll reaches a maximum, and the circumferential length of the circumferential groove being within a range of approximately ±90 degrees including the position of strongest contact.

Classes IPC  ?

• F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise

Abrégé

[Problem] To prevent reduction of the air conditioning performance due to the erosion of an outdoor heat exchanger. [Solution] An air conditioner including an outdoor unit and an indoor unit, the air conditioner including: an outdoor heat exchanger including a heat sink; and a control unit that controls to perform an operation of attaching frost or ice to the surface of the heat sink included in the outdoor heat exchanger, and after the operation is started, perform the next operation of attaching frost or ice to the surface of the heat sink, when a first period has elapsed, the first period being a period to be accumulated over time regardless of whether the air conditioning is in operation or not.

Classes IPC  ?

• F28F 19/00 - Prévention de la formation de dépôts ou de la corrosion, p.ex. en utilisant des filtres
• F24F 11/42 - Dégivrage; Prévention du gel des éléments extérieurs
• F24F 11/70 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes

Abrégé

Provided are a device, method, and program in which reductions in comfort can be suppressed even in high-load states. The device is provided with a plurality of indoor units and one or more outdoor units, and includes a selection means for selecting at least one from among the plurality of indoor units on the basis of scheduled usage information for the indoor units according to the predicted loads of the plurality of indoor units, and a control means for controlling the operation of the selected indoor unit.

Classes IPC  ?

• F24F 11/64 - Traitement électronique utilisant des données mémorisées au préalable

Abrégé

A power conversion device (10) for converting AC power to DC power, the device being provided with: a first switching main circuit (101) having a series circuit of a first switching element (Q1) and a second switching element (Q2) connected between a positive-side DC bus bar (104) and a negative-side DC bus bar (105); a second switching main circuit (102) having a series circuit of a third switching element (Q3) and a fourth switching element (Q4) connected between the positive-side DC bus bar (104) and the negative-side DC bus bar (105); reflux diodes (D1, D2, D3, D4) connected in parallel with the first, second, third, and fourth switching elements respectively; a first reverse voltage application circuit (A1) for applying a reverse voltage to the reflux diode connected in parallel with the first switching element; and a second reverse voltage application circuit (A2) for applying a reverse voltage to the reflux diode connected in parallel with the second switching element.

Classes IPC  ?

• H02M 7/219 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs dans une configuration en pont
• H02M 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques
• H02M 7/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

[Problem] To provide an air conditioner, indoor device and program which clean the interior of a device safely and efficiently. [Solution] An air conditioner which performs air-conditioning operation in which air-conditioned air is discharged from a blowing port, and internal cleaning operation using an ionization product, characterized by comprising a blowing fan 16 which generates an air current by rotation, and an ozone-generating device 15 which generates an ionization product, wherein during internal cleaning operation the blowing fan 15 alternately repeats an operation in which the fan is rotated at a first rotational speed in the reverse direction of the direction of rotation to that during air-conditioning operation, and an operation in which the fan is rotated at a second rotational speed that is slower than the first rotational speed or rotation is stopped.

Classes IPC  ?

• F24F 11/30 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance

Abrégé

This compressor includes: a motor; a sealed container that accommodates therein a compression mechanism part that is driven by the motor; and an accumulator attached to the sealed container. A suction pipe of the accumulator is connected to a suction port side of the compression mechanism part. The suction pipe of the accumulator includes: a first suction pipe that connects the suction port side of the compression mechanism part and a container of the accumulator; and a second suction pipe which is provided in the container of the accumulator, which is fabricated as a member separate from the first suction pipe, and which has a first end side that is connected to the first suction pipe and a second end side that is open to an upper portion in the container of the accumulator. The second suction pipe is configured such that a cross-sectional shape of the portion connected to the first suction pipe is circular, and at least a portion of the second suction pipe has a non-circular cross-sectional shape.

Classes IPC  ?

• F04C 29/12 - Dispositions pour l'admission ou l'échappement du fluide de travail, p.ex. caractéristiques de structure de l'admission ou de l'échappement
• F04B 39/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF; POMPES - Parties constitutives, détails ou accessoires de pompes ou de systèmes de pompage spécialement adaptés aux fluides compressibles, non prévus dans les groupes ou présentant un intérêt autre que celui visé par ces groupes

Abrégé

[Problem] The purpose of the present invention is to provide a system that assists with the setting of a control parameter for an air conditioning system. [Solution] The present invention provides an air conditioning setting assistance system including: a piping model acquisition means that acquires a piping model representing the layout of an air conditioner and refrigerant piping; a piping parameter acquisition means that acquires a parameter relating to the refrigerant piping; a piping information generation means that uses the piping model and the parameter as a basis to generate piping information for use in control of the air conditioner; and a piping information provision means that provides the piping information to a control means for the air conditioner.

Classes IPC  ?

• F24F 11/49 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance en assurant un fonctionnement correct, p.ex. par des essais ou par des contrôles de la configuration

Abrégé

This electric-motor compressor comprises a compression mechanism unit that compresses a refrigerant, an electric motor mechanism unit that drives the compressor mechanism unit, an airtight container that incorporates the compression mechanism unit and the electric motor mechanism unit, and an accumulator that accumulates liquid refrigerant and is provided on the suction side of the compression mechanism unit. The accumulator is provided with an inlet pipe for guiding refrigerant into the accumulator, and an outlet pipe for sending the refrigerant in the accumulator to the compression mechanism unit. A refrigerant repellent that prevents the liquid refrigerant flowing into the accumulator through the inlet pipe from flowing into the outlet pipe is provided to the lower-end part inside the accumulator at the inlet pipe.

Classes IPC  ?

• F25B 43/00 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur
• F04B 39/16 - Filtrage; Déshumidification
• F04C 29/12 - Dispositions pour l'admission ou l'échappement du fluide de travail, p.ex. caractéristiques de structure de l'admission ou de l'échappement

Abrégé

Provided is a management device, for example, for managing a plurality of types of equipment at low cost. The management device (10) is provided with: a first communication unit connected to an air conditioner (20) via a first equipment network (ka); a second communication unit connected to equipment including a monitor camera (30), a door lock mechanism (41), and an illuminating device (50) via a second equipment network (kb); and a third communication unit connectable to a higher level device. The management device (10) is further provided with a control unit which controls the air conditioner (20) or the equipment on the basis of a combination of a state of the air conditioner (20) received via the first communication unit and a state of the equipment received via the second communication unit.

Classes IPC  ?

• G06F 13/00 - Interconnexion ou transfert d'information ou d'autres signaux entre mémoires, dispositifs d'entrée/sortie ou unités de traitement
• F24F 11/54 - Aménagements de commande ou de sécurité caractérisés par des interfaces utilisateurs ou par la communication utilisant une unité de commande centrale connectée à des sous-unités de commande
• H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou

Abrégé

An air conditioner provided with: a housing; an indoor heat exchanger installed inside the housing; a blower for blowing indoor air onto the indoor heat exchanger; and a machine chamber for accommodating an expansion valve, a refrigerant distributor, and piping by which these are connected. The machine chamber is separated by means of a partition plate from the space in which the blower is arranged, and an air introduction passage for introducing a portion of the air discharged from the blower to the machine chamber partitioned by the partition plate is provided around the partition plate. Thus, the leakage of noise generated in the machine chamber of an indoor unit into a room can be suppressed, enabling a reduction in noise, and condensation on the outer surface of the housing of the indoor unit can be suppressed.

Classes IPC  ?

• F24F 1/0067 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments intérieurs, p.ex. ventilo-convecteurs caractérisés par des échangeurs de chaleur - par la forme des échangeurs de chaleur ou de leurs parties constitutives, p.ex. par la forme de leurs ailettes
• F24F 13/20 - Enveloppes ou couvercles
• F24F 13/24 - Moyens pour éviter ou supprimer le bruit

Abrégé

The purpose of the present invention is to provide an air-conditioning system, method, and program for acquiring the coordinates of the installation positions of a plurality of indoor units and controlling the operation of each of the indoor units.　The present invention is an air-conditioning system including a plurality of indoor units, wherein each of the indoor units includes a detection unit (512) that detects an object within a predetermined range, and the air-conditioning system includes: a correlation determination unit (522b) that determines the correlation between the characteristic value related to the detection information detected by the detection means of a first indoor unit and the characteristic value related to the detection information detected by the detection means of a second indoor unit; and a coordinate calculation unit (522c) that calculates the positional relationship between the first indoor unit and the second indoor unit on the basis of the determination result from the correlation determination unit (522b).

Classes IPC  ?

• F24F 11/54 - Aménagements de commande ou de sécurité caractérisés par des interfaces utilisateurs ou par la communication utilisant une unité de commande centrale connectée à des sous-unités de commande
• F24F 11/63 - Traitement électronique
• F24F 11/89 - Aménagements ou montage des dispositifs de commande ou de sécurité
• F24F 120/12 - Position des occupants
• F24F 120/14 - Activité des occupants

Abrégé

In some examples, a co-rotating scroll compressor includes a driver scroll having an axis aligned with the main axis and having a spiral involute, an idler scroll having an axis offset from the main axis and having a spiral involute intermeshed with the spiral involute of the driver scroll, and an Oldham coupling disposed between the driver scroll and idler scroll. The driver scroll may offset key slots so to engage with corresponding Oldham coupling keys. In another example, the Oldham coupling may offset driver scroll keys so to engage with corresponding key slots of the driver scroll.

Classes IPC  ?

• F01C 17/06 - Dispositions pour l'entraînement des organes coopérants, p.ex. pour piston rotatif et son carter utilisant des manivelles, des joints universels, ou des éléments similaires

Abrégé

The invention comprises: a housing (11) having a rectangular parallelepiped shape; an outdoor heat exchanger (12) that is provided to the housing (11) and exchanges heat between outside air and a refrigerant; an outdoor fan (13) provided to the housing (11); a bell mouth (14) that surrounds the outer periphery of the outdoor fan (13) and forms an opening for blowing out air by the outdoor fan (13); an inverter substrate (35a, 35b) provided in a space between the lateral side of the bell mouth (14) and the inner side of a side surface cover (31) which constitutes the housing; and a flow path (a) through which air passing the inverter substrate (35a, 35b) or a heat sink (36a, 36b) flows, the flow path being provided to the side surface cover (31) and having an inlet (41) and an outlet (42) which are opened toward the outside. The outlet (42) is arranged adjacent to the bell mouth (14), and is oriented toward the side in the same direction as the direction in which the bell mouth (14) blows out air.

Classes IPC  ?

• F24F 1/38 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur - Parties constitutives des ventilateurs des éléments extérieurs, p.ex. orifices d'admission évasés ou supports des ventilateurs
• F24F 1/22 - Leur agencement ou leur montage
• F24F 1/24 - Refroidissement des composants électriques

Abrégé

Provided is a compressor and the like with high reliability. A compressor (100) includes a cylindrical oil ring (15) provided between a compression mechanism portion (2) and an electric motor (6). A stator (6a) of the electric motor (6) is provided with at least one oil passage that connects one side of the stator (6a) with the other side of the same in an axial direction. An upstream end of a discharge pipe (Pb) is located radially inward of the oil ring (15), and the oil ring (15) is provided radially inward of the oil passage when viewed cross-sectionally. In the cross-sectional view including a part where the discharge pipe (Pb) is inserted into the oil ring (15), at least a part of the oil passage overlaps with the oil ring (15) in a radial direction.

Classes IPC  ?

• F04C 29/02 - Lubrification; Séparation du lubrifiant
• F04B 39/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF; POMPES - Parties constitutives, détails ou accessoires de pompes ou de systèmes de pompage spécialement adaptés aux fluides compressibles, non prévus dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
• F04B 39/04 - Mesures pour éviter que le lubrifiant ne contamine le fluide pompé
• F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise

Abrégé

This hermetic rotary compressor comprises a crankshaft, an electric motor section that causes the crankshaft to rotate, a compression mechanism section driven by the crankshaft, and a hermetic container within which the aforementioned components are accommodated. The compression mechanism section is provided with a roller driven by the crankshaft, a cylinder in which the roller moves eccentrically, a vane that is provided to the cylinder and that comes into contact with the roller and partitions a compression chamber into an intake-side space and a compression-side space, a vane-accommodating groove that is provided to the cylinder and that accommodates the vane, and a spring that urges the vane in the direction of the roller. The vane is provided with a center protrusion that is provided to a rear surface of the vane and that is for positioning the spring, and end-side protrusions respectively provided to the rear-surface-side ends of the vane on both sides of the center protrusion. The end-side protrusions respectively provided on both sides of the center protrusion are formed extending further radially outward in comparison to the center protrusion.

Classes IPC  ?

• F04C 18/356 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles possédant les caractéristiques couvertes par au moins deux des groupes , , , , ou par l'un de ces groupes en combinaison avec un autre type de mouvement entre les organes coopérants ayant à la fois le mouvement défini dans l'un des groupes ou et un mouvement alternatif relatif entre les organes coopérants les organes obturateurs ayant un mouvement alternatif par rapport à l'organe externe

Abrégé

[Problem] To provide a refrigeration cycle, an air-conditioning system, and a method for controlling the refrigeration cycle. [Solution] A refrigeration cycle according to the present invention includes: an outdoor unit 110; and indoor units 130-1 and the like. This refrigeration cycle includes: a controller 116 that controls a compressor 115 and an outdoor fan 113 so as to minimize the total value of electric power consumption of an air-conditioning system; and an inverter 117 that, in accordance with an operation mode and a sensor value, controls the outdoor fan 113 at a rotational speed predicted from an air-conditioning load of an air-conditioning space. The controller 116 predicts the air-conditioning load and controls the rotational speed of the outdoor fan 113 in accordance with a capacity based on the predicted capacity.

Classes IPC  ?

• F24F 11/46 - Amélioration de l’efficacité électrique ou économie d’énergie électrique
• F24F 11/62 - Aménagements de commande ou de sécurité caractérisés par le type de commande ou par le traitement interne, p.ex. utilisant la logique floue, la commande adaptative ou l'estimation de valeurs
• F24F 11/871 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant l’absorption ou la restitution de chaleur dans des éléments extérieurs en commandant des ventilateurs extérieurs

Abrégé

Provided is a highly reliable air-conditioner capable of setting an indoor heat exchanger in a clean state. An air-conditioner (100) is provided with: a refrigerant circuit (Q) where a refrigerant is circulated sequentially through a compressor (11), an outdoor heat exchanger (12), an outdoor expansion valve (14), an indoor expansion valve (15), and an indoor heat exchanger (16); and a control unit. The control unit causes the indoor heat exchanger (16) to function as an evaporator, freezes the indoor heat exchanger (16), and causes the indoor heat exchanger (16) to function as a condenser without stopping the compressor (11) after the indoor heat exchanger (16) has been frozen, or closes or opens to a certain degree the indoor expansion valve (15) by stopping the compressor (11) after the indoor heat exchanger (16) has been frozen, the opening to the certain degree being less than the full opening of the indoor expansion valve (15).

Classes IPC  ?

• F24F 11/43 - Dégivrage; Prévention du gel des éléments intérieurs
• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire

Abrégé

Disclosed is an air conditioning system that includes one or more air conditioners. This air conditioning system includes a communication device that communicates with the one or more air conditioners, and a device information supply unit that provides information on at least one air conditioner and information on the communication device through a first wireless communication. Furthermore, the air conditioning system includes a terminal device that operates a target air conditioner from the one or more air conditioners on the basis of the air conditioner information and the communication device information acquired via the first wireless communication.

Classes IPC  ?

• F24F 11/56 - Commande à distance
• H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou

Abrégé

Provided is a highly reliable compressor or the like. A compressor (100) is provided with: an airtight container (1) in which lubricating oil is sealed; an electric motor (6) which has a stator (6a) and a rotor (6b) and which is installed inside the airtight container (1); a crankshaft (3) that rotates integrally with the rotor (6b); a compression mechanism part (2) that compresses a refrigerant in association with rotation of the crankshaft (3); a discharge pipe (Pb) through which the refrigerant compressed by the compression mechanism part (2) is guided to the outside of the airtight container (1); and a cylindrical oil ring (15) that is provided between the compression mechanism part (2) and the electric motor (6). At a lower part of the oil ring (15), a slit (s1) is provided as a first insertion part through which the discharge pipe (Pb) is inserted.

Classes IPC  ?

• F04B 39/02 - Lubrification
• F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
• F04C 29/02 - Lubrification; Séparation du lubrifiant

Abrégé

dLodd) which is a terminal voltage of a series circuit formed by the first and second capacitors (40, 42) approaches a voltage ratio command value that is greater than 0.5.

Classes IPC  ?

• H02M 7/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

This air conditioner comprises: a refrigerant circuit in which a refrigerant circulates sequentially in a refrigeration cycle through a compressor, a condenser, an expansion valve, and an evaporator; and a control unit that controls at least the compressor and the expansion valve. One of the condenser and the evaporator is an outdoor heat exchanger, and the other is an indoor heat exchanger. The control unit causes the indoor heat exchanger to function as the evaporator, and controls the operating frequency of the compressor on the basis of the temperature of the indoor heat exchanger during a freezing treatment of freezing the indoor heat exchanger (step S20), as well as controls the opening of the expansion valve on the basis of the dryness of the refrigerant sucked into the compressor or the temperature of the refrigerant discharged from the compressor (step S30).

Classes IPC  ?

• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
• F24F 11/86 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant des compresseurs dans les circuits de pompes à chaleur ou de réfrigération

Abrégé

The purpose of the present invention is to provide an air conditioner that reduces the retained quantity of refrigerant in liquid-side connection piping and makes it possible to contribute to a reduction in the amount of refrigerant used when applying a flammable refrigerant or the like. This air conditioner comprises: a refrigerant circuit in which a compressor (1), an outdoor heat exchanger (3), an expansion valve (5), and an indoor heat exchanger (11) are connected by piping and in which refrigerant circulates in a first refrigeration cycle; and a supercooling means that supercools the refrigerant to at least 10K between the outdoor heat exchanger (3) and the expansion valve (5). Liquid-side connection piping (102) in the refrigerant circuit is formed from piping having an inner diameter equal to or greater than 1.5 mm and less than 4.75 mm.

Classes IPC  ?

• F24F 1/30 - Conduites réfrigérantes pour une utilisation à l'intérieur des éléments extérieurs séparés
• F24F 1/32 - Conduites réfrigérantes pour relier les éléments extérieurs séparés aux éléments intérieurs
• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
• F25B 13/00 - Machines, installations ou systèmes à compression, à cycle réversible

Abrégé

The present invention provides an air conditioner comprising an indoor unit and an outdoor unit, wherein: the indoor unit has an indoor heat exchanger; the outdoor unit has an expansion valve; the indoor heat exchanger has a two-row heat exchanger in which heat transfer pipes are arranged in two rows, and a one-row heat exchanger in which heat transfer pipes are arranged in one row; and the expansion valve is connected to the one-row heat exchanger via at least part of one row of the two-row heat exhanger and also via at least part of the other row of the two-row heat exchanger.

Classes IPC  ?

• F24F 1/0059 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments intérieurs, p.ex. ventilo-convecteurs caractérisés par des échangeurs de chaleur
• F24F 1/0067 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments intérieurs, p.ex. ventilo-convecteurs caractérisés par des échangeurs de chaleur - par la forme des échangeurs de chaleur ou de leurs parties constitutives, p.ex. par la forme de leurs ailettes
• F25B 39/02 - Evaporateurs

Abrégé

An S/N detection indoor device includes a communication means, and a detector for detecting the S/N of data destined for a same-group indoor device belonging to the same group as that to which the S/N detection indoor device belongs. The communication means re-transmits data when the S/N is less than a first threshold.

Classes IPC  ?

• F24F 11/50 - Aménagements de commande ou de sécurité caractérisés par des interfaces utilisateurs ou par la communication
• H04B 3/36 - Circuits de répéteur
• H04B 17/309 - Mesure ou estimation des paramètres de qualité d’un canal

Abrégé

Provided is a compressor and the like with a simple configuration and high reliability. A stepped bolt (14) of this compressor (100) is inserted through a pump case (12d) and a thrust bearing (13) to be engaged with a threaded hole provided in a subframe (10). The thrust bearing (13) is secured by being sandwiched between the stepped bolt (14) and the subframe (10). A radial gap is provided between the stepped bolt (14) and pump case (12d), an axial gap is provided between the thrust bearing (13) and the pump case (12d), and an oil feed pump (12) is supported by the stepped bolt (14).

Classes IPC  ?

• F04B 39/02 - Lubrification
• F04C 29/02 - Lubrification; Séparation du lubrifiant

Abrégé

The present invention is characterized by being provided with a heat exchanger having a plurality of flow passages for a refrigerant, and a distributor for distributing the refrigerant to each of the flow passages of the heat exchanger, wherein: the distributor has an inlet pipe through which the refrigerant flows into the housing of the distributor, and a plurality of outlet pipes through which the refrigerant in the housing flows out; and each of the plurality of outlet pipes has an opening in which the proportion of gas refrigerant and liquid refrigerant to be flowed out changes in accordance with the level of the gas-liquid interface in the housing.

Classes IPC  ?

• F25B 41/00 - Circulation du fluide

Abrégé

An air conditioning management device for managing an air conditioner comprises: an obtaining means for obtaining an output value indicative of an operation result of a preset device from among a plurality of devices constituting the air conditioner; a cost estimating means for estimating a total cost for after the output value is obtained that includes an operation cost of the air conditioner and a renewal cost on the basis of the output value obtained by the obtaining means and an output value of the device predicted from a preset operation model for the air conditioner; and an outputting means for outputting information relating to the total cost for after the output value is obtained estimated by the cost estimating means.

Classes IPC  ?

• F24F 11/47 - Réaction aux coûts énergétiques
• F24F 140/60 - Consommation d'énergie

Abrégé

The comfort level of an air-conditioned space and the degree of energy saving of an air conditioning system using an indoor unit, when operation of the indoor unit is continued according to setting content for the indoor unit in accordance with a user operation, are estimated on the basis of the setting content. The comfort level and degree of energy saving are then outputted.

Classes IPC  ?

• F24F 11/46 - Amélioration de l’efficacité électrique ou économie d’énergie électrique
• F24F 11/62 - Aménagements de commande ou de sécurité caractérisés par le type de commande ou par le traitement interne, p.ex. utilisant la logique floue, la commande adaptative ou l'estimation de valeurs
• F24F 110/10 - Température
• F24F 110/12 - Température de l'air extérieur
• F24F 110/22 - Humidité de l'air extérieur
• F24F 140/60 - Consommation d'énergie

Abrégé

The present invention discloses a setting assistance system for assisting with the setting of an air conditioner network. The setting assistance system includes an acquisition unit for associating air-conditioner-related information and refrigerant system identification information with each other and acquiring the information as associated information. The setting assistance system also includes a detection unit that, in accordance with the air-conditioner-related information, detects designation information for designating an air conditioner to be set. The setting assistance system furthermore includes a setting control unit that sets an address related to the refrigerant system identification information to the air conditioner to be set, the setting being made on the basis of the associated information and the designation information.

Classes IPC  ?

• F24F 11/58 - Commande à distance par internet
• F24F 11/50 - Aménagements de commande ou de sécurité caractérisés par des interfaces utilisateurs ou par la communication

Abrégé

Provided are a system, a device, a method, and a program, which are capable of significantly reducing total power consumption. This system is a system in which one or more indoor units are connected to a plurality of outdoor units, and the system comprises: a calculating means 31 which calculates a total value of loads required by the one or more indoor units; and an adjusting means 32 which adjusts the ratio of the loads distributed to each outdoor unit according to the total value of the loads calculated by the calculating means 31.

Classes IPC  ?

• F24F 11/46 - Amélioration de l’efficacité électrique ou économie d’énergie électrique
• F24F 11/54 - Aménagements de commande ou de sécurité caractérisés par des interfaces utilisateurs ou par la communication utilisant une unité de commande centrale connectée à des sous-unités de commande

Abrégé

Provided are a refrigerant distribution and adjustment device, an air-conditioning system and a method for controlling an air-conditioning system. The refrigerant distribution and adjustment device comprises: a refrigerant distribution unit (1) comprising a first flow channel (11) and a second flow channel (12), the volume of the first flow channel (11) being greater than the volume of the second flow channel (12); and a flow channel switching unit (2), the flow channel switching unit (2) being capable of switching between a first state and a second state, wherein in the first state, the first flow channel (11) is in communication with a first medium providing device (3) and an indoor heat exchange unit (5), and the second flow channel (12) is in communication with a second medium providing device (4) and a compressor unit (6); and in the second state, the first flow channel (11) is in communication with the second medium providing device (4) and the compressor unit (6), and the second flow channel (12) is in communication with the first medium providing device (3) and the indoor heat exchange unit (5). By arranging two flow channels with different volumes and a flow channel switching unit (2), the adjustment of the amount of refrigerant can be realized by using the difference between the volumes of two flow channels, so that when an air-conditioning system works in different working conditions, the switching of refrigerant flow channels can be realized by means of controlling the state of the flow channel switching unit (2), thereby realizing the adjustment of the amount of refrigerant.

Classes IPC  ?

• F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé

Abrégé

Provided are a system, a method, and a program which enable reduction of power consumption by shortening time necessary for reaching a set temperature. This system is provided with a plurality of indoor units and one or more outdoor units, and includes an acquisition means (30) for acquiring information relating to operations from an outdoor unit and an indoor unit operating in response to an instruction to operate, among the plurality of indoor units and the one or more outdoor units, and a control means (34) for, in accordance with the acquired information, giving the instruction to operate to at least one indoor unit which has not received the instruction to operate.

Classes IPC  ?

• F24F 11/56 - Commande à distance
• F24F 11/46 - Amélioration de l’efficacité électrique ou économie d’énergie électrique
• F24F 11/526 - Aménagements pour l’indication, p.ex. écrans émettant des signaux audibles
• F24F 11/79 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de l’apport en air traité, p.ex. commande de la pression pour la commande de la direction de l’air fourni
• F24F 120/20 - Commentaires des utilisateurs

Abrégé

This air conditioner comprises: a refrigerant circuit in which a refrigerant circulates through a freezing cycle via a compressor, a condenser, an outdoor expansion valve, and an evaporator in the stated order; and a control unit that controls at least the compressor and the outdoor expansion valve. One of the condenser and the evaporator is an outdoor heat exchanger, and the other is an indoor heat exchanger. The control unit causes the indoor heat exchanger to function as an evaporator, and during a freezing process for freezing the indoor heat exchanger, the control unit performs a liquid compression prevention control (step S24) when a first condition is met (Yes in step S21), and cancels the liquid compression prevention control (step S26) when a second condition is met during the liquid compression prevention control (Yes in step S25).

Classes IPC  ?

• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire
• F24F 11/43 - Dégivrage; Prévention du gel des éléments intérieurs
• F24F 11/74 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de l’apport en air traité, p.ex. commande de la pression pour la commande du débit d'air ou de la vitesse de l’air
• F24F 11/86 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant des compresseurs dans les circuits de pompes à chaleur ou de réfrigération
• F24F 11/871 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant l’absorption ou la restitution de chaleur dans des éléments extérieurs en commandant des ventilateurs extérieurs
• F28G 13/00 - Accessoires ou procédés non couverts par les groupes ; Combinaisons d'accessoires ou de procédés couverts par les groupes
• F24F 110/10 - Température
• F24F 140/20 - Température du fluide échangeur de chaleur

Abrégé

Provided is an air conditioner that cleans an indoor heat exchanger and prevents condensation from dripping. A control unit (30) for an air conditioner (100) performs a freezing process for causing an indoor heat exchanger (15) to function as an evaporator and to freeze. If the detected value of an indoor temperature sensor is equal to or greater than a first prescribed value, the control unit (30) either does not perform the freezing process, or shortens the freezing process duration time or decreases the rotational speed of a compressor motor (11a) during the freezing process even when performing the freezing process. The first prescribed value is lower than the upper limit for the set temperature that can be changed by a remote control during cooling operation or heating operation.

Classes IPC  ?

• F24F 11/86 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant des compresseurs dans les circuits de pompes à chaleur ou de réfrigération
• F24F 11/41 - Dégivrage; Prévention du gel
• F24F 110/10 - Température

Abrégé

This freezing system is configured so that it is possible to quickly and reliably assess a correspondence relationship between an outdoor unit and an indoor unit. Therefore, this device (10, 80) for assessing a correspondence relationship of a freezing system comprises: an outdoor unit start-up part (12) for starting up a freezing cycle of a target outdoor unit, which is at least one outdoor unit; an expansion valve control unit (82) that sets expansion valves (62) in a plurality of indoor units to an opened state when the target outdoor unit starts up, and that, when a change occurs in a refrigerant-related temperature in any indoor unit, sets the expansion valve (62) of the corresponding indoor unit to a closed state; and a correspondence relationship assessment unit (14) that assesses that the target outdoor unit and the indoor unit of which the expansion valve (62) was closed are connected when a prescribed change occurs in a refrigerant pressure in the target outdoor unit.

Classes IPC  ?

• F24F 11/49 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance en assurant un fonctionnement correct, p.ex. par des essais ou par des contrôles de la configuration
• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
• F25B 13/00 - Machines, installations ou systèmes à compression, à cycle réversible
• F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression

Abrégé

A control device for an air conditioning device that has a plurality of outdoor units and an indoor unit connected to the plurality of outdoor units by piping, said control device having a control means that controls so as to: find the degree of overcooling at outlets of overcooling circuits of the outdoor units on the basis of the temperature detected by a temperature sensor for detecting the temperature of refrigerant passing through the overcooling circuit of each of the outdoor units before the filling of the refrigerant circuit, which includes the plurality of outdoor units and the indoor unit, with refrigerant is completed; find a target value for the degree of overcooling on the basis of the plurality of degrees of overcooling that were found; and increase the speed of compressors of the outdoor unit having a degree of overcooling greater than the target value and decrease the speed of the compressors of the outdoor unit having a degree of overcooling less than the target value so that differences in the degrees of overcooling at the outlets of the overcooling circuits of the outdoor units are minimized.

Classes IPC  ?

• F25B 45/00 - Dispositions pour l'introduction ou l'évacuation du frigorigène

Abrégé

The present invention comprises: a normally open solenoid valve that is provided in a pipe for circulating a slightly flammable or flammable refrigerant so as to be closed by power from a commercial power supply and an auxiliary power supply; a leakage detection means for detecting leakage of the refrigerant; a first control means for closing the solenoid valve by supplying power from the commercial power supply if leakage of the refrigerant is detected by the leakage detection means; a power failure detection means for detecting power failure from the commercial power supply; and a second control means for closing the solenoid valve by supplying power from the auxiliary power supply, regardless of whether or not leakage of the refrigerant is detected by the leakage detection means, if it is detected by the power failure detection means that the power from the commercial power supply can no longer be supplied to the solenoid valve.

Classes IPC  ?

• F24F 11/32 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance réagissant aux dysfonctionnements ou aux situations critiques
• F24F 11/36 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance réagissant aux dysfonctionnements ou aux situations critiques aux fuites de fluides échangeurs de chaleur
• F25B 41/04 - Disposition des soupapes
• F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression

Abrégé

This leak detecting device for detecting a refrigerant leak from an air conditioner in an air conditioned space which is air conditioned by means of the air conditioner is characterized by being provided with: a leak detecting unit for detecting a refrigerant leak; a communication unit which, if the leak detecting unit has detected a refrigerant leak, transmits notification information indicating that a leak has been detected, to an external device by way of a communication network; and a power supply unit which is turned on and off independently of an electricity supply to the air conditioner, and which supplies electricity to the leak detecting device.

Classes IPC  ?

• F24F 11/36 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance réagissant aux dysfonctionnements ou aux situations critiques aux fuites de fluides échangeurs de chaleur
• F24F 7/007 - Ventilation à écoulement forcé
• F24F 11/58 - Commande à distance par internet
• F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
• H04M 11/00 - Systèmes de communication téléphonique spécialement adaptés pour être combinés avec d'autres systèmes électriques
• H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou

Abrégé

Provided are a power conversion device and the like having a simple configuration and a low loss. An inverter (100) is provided with: a switching element drive circuit (20) for outputting drive signals to switching elements (Qa, Qb); reverse voltage application circuits (30a, 30b) for applying reverse voltages to the parasitic diodes (Da, Db) or free-wheeling diodes of the switching elements (Qa, Qb); and multivibrators (40a, 40b) for generating reverse voltage application signals to the reverse voltage application circuits (30a, 30b) using the drive signals input thereto from the switching element drive circuit (20).

Classes IPC  ?

• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

In this compressor provided with an outer-rotor-type motor, an inclination when a stator is fixed is suppressed, and a decline in the performance of the compressor caused by manufacturing variations of products is suppressed. To this end, the compressor is provided with: a case forming an outer cover; a main frame fixed inside the case and having a bearing formed at the center; a stator having a substantially cylindrical shape and fixed to a lower section of the main frame; a rotor having an inner circumferential surface facing an outer circumferential surface of the stator; a crank shaft having an eccentric part formed in an upper section and having a part fixed to the rotor; a turning scroll connected to the eccentric part; a fixed scroll fixed to an upper section of the main frame and forming a compression chamber together with the turning scroll; a coil wound around the outer circumferential surface of the stator so as to generate a magnetic field; and an insulator disposed between the coil and the stator. The main frame includes a projecting part directed downward and having an inner diameter approximately equal to the outermost diameter of the insulator, and fixes, by use of the projecting part, the stator integrated with the insulator.

Classes IPC  ?

• F04C 29/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT; POMPES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT - Parties constitutives, détails ou accessoires de pompes ou d'installations de pompage spécialement adaptées pour les fluides compressibles non couverts dans les groupes
• F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
• F04C 18/344 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles possédant les caractéristiques couvertes par au moins deux des groupes , , , , ou par l'un de ces groupes en combinaison avec un autre type de mouvement entre les organes coopérants ayant à la fois le mouvement défini dans l'un des groupes ou et un mouvement alternatif relatif entre les organes coopérants les organes obturateurs ayant un mouvement alternatif par rapport à l'organe interne
• H02K 7/14 - Association structurelle à des charges mécaniques, p.ex. à des machines-outils portatives ou des ventilateurs

Abrégé

The present invention provides an electric power converter with low loss, and the like. According to the present invention, a converter (100) is provided with a converter circuit (10) which converts an alternating current voltage into a direct current voltage, while being provided with: a reactor (L1) which is provided on a wiring line (p1) that connects an alternating current power supply (G) and the converter circuit (10) to each other; and a smoothing capacitor (C1) which smoothes direct current voltage applied from the converter circuit (10). The converter (100) is additionally provided with: reverse voltage application circuits (30a, 30b) which apply a reverse voltage to a free wheeling diode or parasitic diodes (Da, Db) of switching elements (Qa, Qb); and a control circuit (50) which makes a switch between driving and stopping of the reverse voltage application circuits (30a, 30b) in accordance with the magnitude of the load of the converter circuit (10).

Classes IPC  ?

• H02M 7/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

An air conditioner (100) according to the present invention comprises an indoor heat exchanger (12), an indoor temperature sensor (24a) that senses the temperature indoors, and a blowing fan (14) that blows air into the indoor heat exchanger (12). From the completion of a dehumidifying operation or a cooling operation until a planned warming completion time at which a prescribed time period has elapsed, the air conditioner (100) executes a warming operation and monitors the temperature indoors using the indoor temperature sensor (24a). When the temperature indoors reaches a prescribed temperature, the air conditioner (100) stops the warming operation, thereby preventing or reducing discomfort of a user through a mold suppression operation as a more suitable mold suppression operation performed after completion of the cooling operation or the dehumidifying operation.

Classes IPC  ?

• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire
• F24F 110/10 - Température

Abrégé

Provided are a low-cost and highly reliable valve drive device, etc. A four-way valve drive device (G) comprises a four-way valve drive circuit (3) and a control circuit (4). The four-way valve drive circuit (3) has a four-way valve coil (36), and also has MOSFET (34, 35) which are provided to a prescribed electric current path via the four-way valve coil (36). The control circuit (4), on the basis of a pulse width modulation control, controls turning the MOSFET (34, 35) on and off, and energizes the four-way valve coil (36).

Classes IPC  ?

• F16K 31/06 - Moyens de fonctionnement; Dispositifs de retour à la position de repos magnétiques utilisant un aimant

Abrégé

111) in accordance with the nonlinear characteristics of the reactor (16).

Classes IPC  ?

• H02M 7/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

Provided is an air conditioner having high reliability in consideration of the possibility of failure of a fan cleaning unit. This air conditioner comprises a heat exchanger (100), an indoor fan (16), a fan cleaning unit (24) for cleaning the indoor fan (16), a control unit (30) that controls at least the indoor fan (16) and the fan cleaning unit (24), and a limit switch (25) pressed by the fan cleaning unit (24), the control unit (30) causing the fan cleaning unit (24) to move toward the limit switch (25), and causing the indoor fan (16) to rotate in the same direction as the movement direction of the fan cleaning unit (24) when the limit switch (25) is not pressed.

Classes IPC  ?

• F24F 1/00 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale
• F24F 11/38 - Diagnostic des défaillances
• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire
• F24F 11/89 - Aménagements ou montage des dispositifs de commande ou de sécurité

Abrégé

In order to suppress power loss in a power conversion device, a power conversion circuit (120) is provided with: reverse voltage application circuits (11-16) that apply reverse voltage lower than DC voltage (VE) in a DC system (142), to corresponding reflux diodes (DA1-DA6); and a control unit (130) that controls the reverse voltage application circuits (11-16). Each of the reverse voltage application circuits (11-16) is provided with: a low voltage power source (22) that generates DC voltage (VG) lower than DC voltage (VE) in the DC system (142); a capacitor (32); a reverse voltage application switching element (28) connected between the low voltage power source (22) and the capacitor (32); and a reverse voltage application diode (34) that is connected between the capacitor (32) and the corresponding reflux diode (DA1-DA6) so as to apply reverse voltage to the reflux diode (DA1-DA6) by using an electric charge stored in the capacitor (32).

Classes IPC  ?

• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p.ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont

Abrégé

The present invention enables appropriate cleaning of a heat exchanger of an air conditioner during a cleaning operation. This air conditioner is provided with: a refrigeration cycle having a compressor that compresses a refrigerant and an indoor heat exchanger; a control device that controls the refrigeration cycle so as to carry out a cleaning operation for cleaning the surface of the indoor heat exchanger; and an indoor fan, wherein the control device has functions (S130, S132, S134) for carrying out freezing control so as to cause the indoor heat exchanger to function as an evaporator and reduce the surface temperature of the indoor heat exchanger below freezing point when the cleaning operation is executed, and functions (S130, S132, S134) for, when the freezing control is being carried out, driving the indoor fan in a prescribed period shorter than the execution period of the freezing control and stopping the indoor fan other than the prescribed period.

Classes IPC  ?

• F24F 11/43 - Dégivrage; Prévention du gel des éléments intérieurs
• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire
• F24F 11/74 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de l’apport en air traité, p.ex. commande de la pression pour la commande du débit d'air ou de la vitesse de l’air
• F24F 1/00 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale
• F24F 110/10 - Température
• F24F 110/12 - Température de l'air extérieur
• F24F 110/20 - Humidité

Abrégé

In order to suppress power loss at a time of conversion of AC voltage to DC voltage, the present invention is provided with: a plurality of main circuit switching elements (QD1-QD4) for converting AC power supplied from an AC system (162) to DC power and supplying the DC power to a load device (164); a reactor (174) connected between the main circuit switching elements (QD1-QD4) and the AC system (162); a plurality of reflux diodes (DD1-DD4) that are connected in reverse parallel respectively to the plurality of main circuit switching elements (QD1-QD4); reverse voltage application circuits (71-74) that are each connected to at least one of the reflux diodes (DD1-DD4), and that apply reverse voltage lower than DC voltage (VE) to be outputted to the load device (164), to the corresponding reflux diodes (DD1-DD4) when the corresponding reflux diodes (DD1-DD4) are cut off; and a control unit (180) that controls the reverse voltage application circuits (71-74).

Classes IPC  ?

• H02M 7/219 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs dans une configuration en pont
• H02M 7/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02M 7/21 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande

Abrégé

The present invention improves an effect of suppressing vibration of a pipe connected to a compressor. The compressor is provided with a compression mechanism unit, a motor that drives the compression mechanism unit, and a motor control device that controls the rotational speed of the motor. A refrigerant pipe is connected to the compressor. The motor control device performs, before stopping current flow to the compressor, pre-vibration generation control to generate pre-vibration for canceling vibration to be generated by stopping of current flow to the compressor, and causes the pre-vibration to interfere with vibration generated at the time of stopping of the current flow to the compressor. Thus, vibration of the pipe is suppressed.

Classes IPC  ?

• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
• F04B 49/02 - Commande d'arrêt, de démarrage, de décharge ou de ralenti
• F04B 49/06 - Commande utilisant l'électricité
• H02P 29/00 - Dispositions pour la régulation ou la commande des moteurs électriques, adaptées à des moteurs à courant alternatif et à courant continu

Abrégé

An air conditioner (100) is provided with: a refrigeration cycle (RC) that has a compressor (32) and an indoor heat exchanger (64); a drain pan (140) that temporarily stores water stuck to the indoor heat exchanger and water falling as drain water; a drain pump (PO) that discharges the drain water stored in the drain pan to the outside; and a control device (20) that controls the operations of the refrigeration cycle and the drain pump. The control device carries out a freezing operation for causing the indoor heat exchanger to function as an evaporator and for setting the surface temperature of the indoor heat exchanger below freezing point, and drives the drain pump so as to satisfy the relationship of "driving time of drain pump after end of normal cooling operation < driving time of drain pump after freezing operation".

Classes IPC  ?

• F24F 11/48 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance préalablement au fonctionnement normal, p.ex. préchauffage ou refroidissement préliminaire
• F24F 11/43 - Dégivrage; Prévention du gel des éléments intérieurs
• F24F 13/22 - Moyens pour éviter la condensation ou pour évacuer le condensat