Abrégé

Provided is an air conditioner which allows resonances in the housing of an outdoor unit or an indoor unit of the air conditioner to be detected at low cost with high accuracy. An outdoor unit (1) of the air conditioner is equipped with: a propeller fan (2) which sends air to a heat exchanger; a fan motor (3) which drives the propeller fan (2); a current detection unit (5) which detects the current value of the fan motor (3); a phase detection unit (6) which detects the pole position of the fan motor (3); a fan speed detection unit (7) which detects the rotational speed of the fan motor (3); a pulsation detection unit (8) which detects the pulsation of the current value on the basis of the detected current value and pole position of the fan motor (3); and a resonance determination unit (9) which determines the resonance of a system in the housing of the outdoor unit or indoor unit having the fan motor (3) on the basis of the detected pulsation of the current value and the detected fan rotational speed. If the resonance is determined by the resonance determination unit (9), a control unit (4) implements resonance avoidance control to increase or decrease the fan speed by a predetermined rotational speed.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité
• 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 13/24 - Moyens pour éviter ou supprimer le bruit

Abrégé

The present invention provides an air conditioner with which it is possible to suitably adjust the amount of exchanged heat in accordance with the indoor load applied to indoor units and the required air conditioning performance, irrespective of the size and type of the indoor units, and with which it is possible to ensure comfort. A configuration is adopted such that, in an air-warming operation: the average refrigerant exit temperature, which is obtained by averaging the temperature of the refrigerant exits of indoor heat exchangers 7 in a plurality of indoor units 10, as detected by heat-exchanger-refrigerant-exit temperature probes 34 in the indoor units 10, is determined; the temperature difference between the average refrigerant exit temperature and the refrigerant exit temperatures of the indoor heat exchangers 7 of each of the indoor units 10 is determined; and the degree to which indoor expansion valves 9 of the indoor units 10 are open is controlled such that the determined temperature difference falls within a predetermined temperature difference range. This makes it possible to provide an air conditioner in which comfort is ensured because the amount of exchanged heat is suitably adjusted in accordance with the indoor load applied to the indoor units and the required air conditioning performance, irrespective of the size and type of the indoor units.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité
• 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

Disclosed is an air conditioning device wherein: a compressor, an indoor heat exchanger, an outdoor heat exchanger, and pipes that connect the compressor, the indoor heat exchanger, and the outdoor heat exchanger to each other are provided; the indoor heat exchanger and/or the outdoor heat exchanger has a first refrigerant path region, a second refrigerant path region, a first fan for performing forced air-cooling of the first refrigerant path region, and a second fan for performing forced air-cooling of the second refrigerant path region; the first refrigerant path region has a first refrigerant flow rate adjustment valve, and a first temperature detector that detects the outlet temperature of a refrigerant; the second refrigerant path region has a second refrigerant flow rate adjustment valve, and a second temperature detector that detects the outlet temperature of the refrigerant; and a control is performed by adjusting the opening degree of each of the first refrigerant flow rate adjustment valve and the second refrigerant flow rate adjustment valve and/or the rotation number of each of the first fan and the second fan so that a difference between the refrigerant outlet temperature obtained by the first temperature detector and the refrigerant outlet temperature obtained by the second temperature detector becomes small.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité

Abrégé

An air conditioner is characterized by being provided with a pair of blowers (4), and a heat exchanger (3) disposed so as to surround an inner space (50) formed at the lower portion of the blowers (4), which serves as the upstream side of the blowers (4). The heat exchanger (3) comprises a pair of halves (30a, 30b) that are shaped symmetrically to one another. Each of the halves (30a, 30b) has, in the following order, a first heat exchanging section (3a), a second heat exchanging section (3b), a third heat exchanging section (3c), and a fourth heat exchanging section (3d) that successively extend while partially curving so as to surround a blower (4). The air conditioner is further characterized by being provided with an outdoor unit (90) that includes the heat exchanger (3), in which the pair of halves (30a, 30b) are joined via the fourth heat exchanging sections (3d).

Classes IPC  ?

• 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 1/38 - 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 1/50 - 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

An air conditioner is characterized by being provided with a pair of blowers (4), and a heat exchanger (3) disposed so as to surround an inner space (50) formed at the lower portion of the blowers (4), which serves as the upstream side of the blowers (4), and by being provided with an outdoor unit (90) that includes the heat exchanger (3), in which a pair of halves (30a, 30b), which are shaped symmetrically to one another and are disposed so as to respectively correspond to the blowers (4), are joined. The outdoor unit (90) has a wall surface that partitions the inner side of an inner space (50) at the side opposing the joint section of the halves (30a, 30b) and interposing the inner space (50), and has a first apparatus housing box (33), which is disposed so as to be close to the wall surface at a position facing the joint section of the halves (30a, 30b).

Classes IPC  ?

• F24F 1/16 - Leur agencement ou leur montage
• F24F 1/22 - Leur agencement ou leur montage
• 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

This air conditioner is provided with an outdoor unit (90) having: a heat exchanger (3) which is raised on a base member so as to surround an inner space (50); and blowers (4) which are arranged on the heat exchanger (3). The heat exchanger (3) is formed by joining a pair of symmetrical hemispheres (30a, 30b). The hemispheres (30a, 30b) each have, in order in the circumferential direction about a blower (4), a first heat exchange section (3a), a second heat exchange section (3b), a third heat exchange section (3c), and a fourth heat exchange section (3d). An equipment containing box (33) is disposed in the inner space (50). Supports (22) for supporting the equipment containing box (33) are each provided between the equipment containing box (33) and an end of the first heat exchange section (3a), and the support (22) has a surface section (24) which, in a transverse cross-section, is formed so as to become gradually closer to the third heat exchange section (3c) as the surface section (24) extends from the end of the first heat exchange section (3a)toward the equipment containing box (33).

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
• 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

The present invention provides a compressor for refrigeration and air conditioning and a refrigeration and air conditioning device, which are capable of achieving both good environmental performance and good refrigeration cycle efficiency. This compressor for refrigeration and air conditioning has a refrigerating machine oil made from polyolester and a difluoromethane-containing refrigerant which are sealed therein. The polyolester has, as a structural unit, poly[2,2-di(alkanoiloxymethyl)oxytrimethylene] having two or more repeating units. Furthermore, the polyolester comprises one or both of a cyclic polyolester obtained by cyclopolymerizing molecular chains having said structural unit and a crosslinked polyolester obtained by crosslinking molecular chains having said structural unit through a structural unit to be crosslinked that is polymerized with said structural unit.

Classes IPC  ?

• C10M 107/32 - Polymères de condensation d'aldéhydes ou de cétones; Polyesters; Polyéthers
• C10M 105/38 - Esters de composés polyhydroxylés
• C10N 40/30 - Lubrifiants pour machines frigorifiques
• 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
• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible

Abrégé

This screw compressor is capable of performing displacement control, ranging from a rated load to a minimum load, by use of a slide valve, further reduces the minimum load at which a compression operation can be performed, and also achieves high efficiency at the rated load. The screw compressor is provided with: a casing that accommodates a screw rotor therein and has an intake port and an axial discharge port; a slide valve that is axially disposed, in a freely reciprocating manner, at a compression-chamber-side meshing part of the screw rotor and changes the load rate by adjusting the timing for starting compression so as to control displacement; and a movable member that constitutes a portion of the axial discharge port and is configured such that the timing for discharging compressed gas can be changed by moving this portion of the axial discharge port.

Classes IPC  ?

• F04C 18/16 - 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 d'un autre type qu'à axe interne avec des pistons rotatifs dentés à dents hélicoïdales, p.ex. du type ayant la forme d'un chevron, du type à vis

Abrégé

[Problem] To provide a scroll compressor with which energy efficiency and reliability can be increased. [Solution] A scroll compressor is equipped with a fluid passage 60 connecting a compression chamber Q4 and a back pressure chamber Q1 so as to make the pressure in the back pressure chamber Q1 equal to the pressure in the compression chamber Q4 during compression, and the fluid passage 60 is equipped with an inflow path 22a opening on the back pressure chamber Q1 side, and an outflow path 22b opening on the compression chamber Q4 side. With respect to the axial direction G of a crankshaft 40, the inflow path 22a slants from an end plate surface 21a1 of an orbiting scroll 20 toward the outflow path 22b.

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 enables the amount of oil supplied during operation to be varied, and thus the amount of an oil supply required by a bearing can be ensured even when a pressure difference is small, and an excessive increase in the amount of the oil supply can be suppressed even when the pressure difference is increased. This screw compressor is provided with a screw rotor, an electric motor for driving the screw rotor, a bearing for supporting the screw rotor, and a casing for accommodating these components. Furthermore, provided are: an oil supply passage formed in the casing to supply oil in a high-pressure side to the bearing by means of a pressure difference with respect to a low-pressure side; and an oil supply amount adjusting part provided in the middle of the oil supply passage, wherein the oil supply amount adjusting part has a cylinder, a valve body provided to be capable of reciprocating inside the cylinder, and a plurality of flow passages provided in the valve body and having different flow passage surface areas. The valve body is moved by the pressure difference between the high-pressure side and the low-pressure side to switch the plurality of flow passages, thereby adjusting the amount of oil supplied to the bearing.

Classes IPC  ?

• F04C 29/02 - Lubrification; Séparation du lubrifiant
• F04C 18/16 - 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 d'un autre type qu'à axe interne avec des pistons rotatifs dentés à dents hélicoïdales, p.ex. du type ayant la forme d'un chevron, du type à vis

Abrégé

Provided are: a heat exchange apparatus which suppresses the unevenness in refrigerant distribution and improves the heat exchange performance of a heat exchanger; and an air conditioner. The heat exchange apparatus is equipped with: heat transfer pipes through which a refrigerant flows; a heat exchanger which performs heat exchange between air and the refrigerant and to which the plurality of heat transfer pipes are connected; a distributor which distributes the refrigerant into the plurality of heat transfer pipes; an inflow pipe which allows the refrigerant to flow into the distributor; and a junction pipe which is connected at a point on the inflow pipe and allows the refrigerant flowing therein to merge with the refrigerant in the inflow pipe. The junction between the inflow pipe and the junction pipe is located in the vicinity of the distributor. The air conditioner is equipped with the heat exchange apparatus.

Classes IPC  ?

• F25B 41/00 - Circulation du fluide

Abrégé

In order to enable determining configuration information of an air conditioner, to enable displaying the cause of air conditioner problems during test operation and maintenance, and to enable easily verifying repair operations on a mobile terminal on the basis of the determination result, a display device displays configuration information, causes of problems, and repair operation procedures of the air conditioner, in which outdoor units having an outdoor heat exchanger and indoor units having an indoor heat exchanger are connected by coolant piping, and which circulates a coolant by means of a compressor. This display device is characterized by being provided with a control unit which determines the device configuration of the indoor units or the outdoor units of the air conditioner, a control unit which determines whether or not a problem has occurred, and a display unit which displays a repair operation procedure.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité

Abrégé

The objective is to reduce abrasion of a compressor sliding member and improve the fatigue life of a roller bearing in a refrigeration device using difluoromethane. This refrigeration and air-conditioning device is equipped with: a sealed electric compressor which draws in and compresses a difluoromethane refrigerant, has a sliding part, and in which a refrigerator oil is sealed; a heat exchanger that dissipates heat from the refrigerant discharged from the compressor; a decompression device that decompresses the refrigerant flowing from the heat exchanger; and a refrigeration cycle that circulates the refrigerant decompressed by the decompression device via the heat exchanger, which absorbs the heat of the refrigerant. This refrigeration and air-conditioning device is characterized in that the refrigerator oil is a modified terminal polyalkylene glycol having a viscosity-pressure coefficient of 11 GPa-1 or greater and expressed by the chemical formula (1) (where R1 and R3 represent a C1-4 alkyl group, or a C2-5 acyl group, with one of these including an acyl group, and R2 represents a C2-4 alkylene group), and the low-temperature-side critical solution temperature of the refrigerant and the refrigerator oil is −30°C or less. Formula 1: R1-(O-R2)n-OR3 . . . (1)

Classes IPC  ?

• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
• C09K 5/04 - Substances qui subissent un changement d'état physique lors de leur utilisation le changement d'état se faisant par passage de l'état liquide à l'état vapeur ou vice versa
• C10M 107/34 - Polyoxyalkylènes
• F25B 1/04 - Machines, installations ou systèmes à compression à cycle irréversible à compresseur rotatif
• C10N 30/06 - Onctuosité; Résistance du film; Anti-usure; Résistance aux pressions extrêmes
• C10N 40/30 - Lubrifiants pour machines frigorifiques

Abrégé

This air-conditioning device (A) is equipped with: a heat exchanger (7) for adjusting air temperature, a fan (9) for causing air to flow, and a motor (8) for causing the fan (8) to rotate, said components provided within a housing (1); an air suction port (14s) and air discharge ports (12a, 12b, 12c, and 12d); a first flow path connecting the suction port (14s) and the heat exchanger (7), and a second flow path connecting the heat exchanger (7) and the discharge ports (12a, 12b, 12c, and 12d); and a heat insulation material (2) provided between the housing (1) and the second flow path, in which air that has passed through the heat exchanger (7) flows, and which is connected to the discharge ports (12a, 12b, 12c, and 12d). Spaces (2s1, 2s2, 2t1, and 2t2) are provided between the housing (1) and the heat insulation material (2), and low-emissivity members (3) having a lower emissivity than the heat insulation material (2) are provided in the spaces (2s1, 2s2, 2t1, and 2t2).

Classes IPC  ?

• F24F 13/20 - Enveloppes ou couvercles

Abrégé

The refrigerant flow paths of a heat exchanger (12) when the heat exchanger operates as a condenser form refrigerant flow paths in directions approaching one another while reciprocating between one end (S1) and the other end (S2), with a gas refrigerant flowing in from gas-side inflow ports (G1, G2) at two locations separated from each other in a second row (F2). At the one end (S1) the refrigerant flow paths from the gas-side inflow ports (G1, G2) at the two locations converge, connecting the refrigerant flow paths from the second row (F2) to a first row (F1) of heat transfer tubes (2), and form a flow path in a range from the same level as one of the gas-side inflow ports (G1) of the second row (F2) to the same level as the other gas-side inflow port (G2) of the second row (F2), while the first row (F1) reciprocates between the one end (S1) and the other end (S2), and this flow path reaches a liquid-side outflow port (L1).

Classes IPC  ?

• F25B 41/00 - Circulation du fluide
• 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 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité
• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
• F28D 1/047 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes pour une seule des sources de potentiel calorifique, les deux sources étant en contact chacune avec un côté de la paroi de la canalisation, dans lesquels l'autre source d avec des canalisations d'échange de chaleur immergées dans la masse du fluide avec canalisations tubulaires les canalisations étant courbées, p.ex. en serpentin ou en zigzag

Abrégé

The purpose of the present invention is to provide an indoor unit for an air conditioner, the indoor unit being configured so that noise caused by the interference of the flow of air discharged from a centrifugal fan with a drain pan can be prevented from increasing. An indoor unit for an air conditioner is provided with: an indoor unit suction opening 3 for sucking in air within a room interior into the indoor unit; a centrifugal blower 5 for discharging the air having been sucked in from the indoor unit suction opening 3 to the surroundings; a heat exchanger 8 provided on the discharge side of the centrifugal blower 5; an air discharge opening 12 disposed downstream of the heat exchanger 8; and a drain pan 9 provided below the heat exchanger 8 and receiving condensate water. The lower end of the discharge opening 7b of the centrifugal blower 5 is provided at a higher position than the upper end 23a of a wall surface section 23 of the drain pan 9, the wall surface section 23 being located upstream of the heat exchanger 8. The drain pan 9 is formed such that the upper end 23a of the wall surface section 23 of the drain pan 9, the wall surface section 23 being located upstream of the heat exchanger 8, is formed lower than the upper end 22a of a wall surface section 22 of the drain pan 9, the wall surface section 22 being located downstream of the heat exchanger 8.

Classes IPC  ?

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

Abrégé

An air conditioner 1 comprises an outdoor heat exchanger 14, an outdoor fan 12 blowing air to the outdoor heat exchanger, an outdoor fan motor 20 to drive the outdoor fan, an outdoor fan inverter 21 to drive the outdoor fan motor, and a control unit 31 to generate rotational speed command voltage to control the rotational speed of the outdoor fan motor. Moreover, the control unit starts defrost operation for the outdoor heat exchanger on the basis of the rotational speed command voltage. Thus, it is possible to provide an air conditioner that allows defrost operation by detecting frost formation on a heat exchanger during heating operation inexpensively without providing a current detection sensor.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité
• F25B 47/02 - Cycles de dégivrage

Abrégé

The purpose of the present invention is to provide a novel air conditioner that can recognize the communication speed of an input signal even when no manual selector switch is provided. A control device 12 in an indoor unit 11 is provided with a plurality of communication means 14a-14c having different communication speeds, a communication speed recognition means 18 that recognizes, from the communication speed of the control information signal, to which of the communication means that a communication line 15 from the indoor unit 10 is connected, and a communication means determination means 18 to determine the communication means to perform subsequent communications on the basis of the recognized communication speed. Thus, the communication speed of an input signal can be recognized even when no manual selector switch is provided. As a result, at least one of problems of complicated construction work, the likelihood of an error in setting the selector switch, and high product costs, is resolved.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité

Abrégé

This air conditioning apparatus is provided with a compressor, a four-way valve, an indoor heat exchanger, an outdoor heat exchanger, and pipes connecting therebetween. The indoor heat exchanger and/or the outdoor heat exchanger is divided into a plurality of refrigerant passage sections. Each of the plurality of refrigerant passage sections of the indoor heat exchanger and/or the outdoor heat exchanger can be switched so as to be connected to another refrigerant passage section in series or in parallel when a refrigerant control valve, which opens or closes the refrigerant flow path, is operated. A temperature detector is installed at the refrigerant outlet of each refrigerant passage section. The operation of the refrigerant control valve is controlled on the basis of data on the temperature obtained by the temperature detector. Additionally, in the present invention, each of the plurality of refrigerant passage sections of the indoor heat exchanger and/or the outdoor heat exchanger may be configured such that the refrigerant flow can be blocked when the refrigerant control valve, which opens or closes the refrigerant flow path, is operated. The above configuration allows the air conditioning apparatus to be operated such that the appropriate flow volume of the refrigerant is maintained in accordance with the actual operation state and the coefficient of performance (COP) is made continuously high. In addition, since the heat exchangers are divided, a redundant and reliable air conditioning apparatus can be provided.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité

Abrégé

A winding changeover motor drive device is provided with: a motor drive circuit 1 for driving a permanent magnet synchronization motor 3; a winding changeover circuit 2 for changing over a connection of wiring of the permanent magnet synchronization motor 3; and a control circuit 4 for controlling the motor drive circuit 1 and the winding changeover circuit 2, wherein when the motor drive circuit 1 stops the permanent magnet synchronization motor 3 on the basis of the control by the control circuit 4, the winding changeover circuit 2 changes over the connection of the winding of the permanent magnet synchronization motor 3 on the basis of the control by the control circuit 4, and the motor drive circuit 1 reactivates the permanent magnet synchronization motor 3 on the basis of the control by the control circuit 4, the control circuit 4 sets a motor current initial value of the permanent magnet synchronization motor 3 to a value equal to or larger than a motor current value calculated from a motor current value before the stop and a connection state of the winding.

Classes IPC  ?

• H02P 23/00 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par un procédé de commande autre que la commande par vecteur

Abrégé

In the present invention, a scroll compressor is provided with a fixed scroll and a rotating scroll, and by causing the rotating scroll to rotate, a suction chamber and a compression chamber are formed. In addition, the following are provided: a first space which is formed at the back surface center part of the rotating scroll and into which the lubrication oil in a sealed receptacle bottom part is lead so that the pressure in the space becomes close to a discharge pressure; a second space which is provided at the rear surface of the rotating scroll further to the outer peripheral side than the first space, and in which the pressure becomes a pressure between the discharge pressure and a suction pressure; a first oil seepage path that allows some of the oil in the first space to seep into the second space; an oil return flow path that returns a large portion of the oil in the first space to the bottom part within the sealed receptacle; a second oil seepage path for allowing some of the oil in the second space to seep into the suction chamber; and a third oil seepage path that, in accordance with the difference between the pressure in the compression chamber and the pressure in the second space, adjusts the pressure in the second space by releasing the oil in the second space into the pressure chamber.

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 27/00 - Systèmes d'étanchéité dans les pompes à piston rotatif spécialement adaptées pour les fluides compressibles
• 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 29/02 - Lubrification; Séparation du lubrifiant
• 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

The purpose of the present invention is to provide a high efficiency heat exchanger in which a decrease in fin strength is mitigated. In the present invention, a heat exchanger is provided with the following: stacked fins; a heat transfer pipe that penetrates the fins in the direction in which the fins are stacked, and inside of which a refrigerant flows; and a blower that blows air in the width direction of the fins. The fins are provided with the following: a plurality of through holes through which the heat transfer pipe passes; and slits that are formed between the adjacent through holes and that are wider than the through holes in the width direction of the fins. A protrusion is formed at the width-direction outer edge of the fins.

Classes IPC  ?

• F28F 1/32 - Eléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p.ex. avec des ailettes, avec des saillies, avec des évidements ces moyens étant uniquement à l'extérieur de l'élément tubulaire et s'étendant transversalement les moyens ayant des parties engageant d'autres éléments tubulaires

Abrégé

This scroll compressor is provided with: a compression mechanism which comprises an orbiting scroll and a fixed scroll that meshes with the orbiting scroll to form a compression chamber; a frame which is positioned on the side of the orbiting scroll opposite of the fixed scroll, which is attached to the fixed scroll such that the frame and the fixed scroll together sandwich the orbiting scroll, and on which a primary bearing is formed; and a frame auxiliary member which is mechanically fastened from the bottom of the frame and is welded at the outer periphery to an airtight container. Since the scroll compressor is provided with a frame auxiliary member which is mechanically fastened from the bottom of the frame and is welded at the outer periphery to the airtight container, even when using an aluminum material in the compression mechanism, it is possible both to fix the compression mechanism to the airtight container and to suppress welding deformation of the compression mechanism.

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

The purpose of the present invention is to provide an air conditioner with which the amount of acid scavenger remaining in a refrigeration cycle is secured for a long period of time during operation, and reliability is improved. Provided is an air conditioner in which a refrigeration cycle is formed by using piping to connect: a compressor 11 for compressing coolant; an outdoor heat exchanger 13 for heat exchange between coolant and outdoor air; an indoor heat exchanger 31 for heat exchange between coolant and indoor air; and an expansion valve for decompressing coolant. The air conditioner uses a refrigerator oil which uses polyol ester oil as the base oil and which contains an alkyl glycidyl ether compound having epoxy groups.

Classes IPC  ?

• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
• C09K 5/04 - Substances qui subissent un changement d'état physique lors de leur utilisation le changement d'état se faisant par passage de l'état liquide à l'état vapeur ou vice versa
• C10M 105/38 - Esters de composés polyhydroxylés
• C10M 129/18 - Epoxydes
• 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
• C10N 30/00 - Propriétés physiques ou chimiques particulières améliorées par l'additif caractérisant la composition lubrifiante, p.ex. additifs multifonctionnels
• C10N 40/30 - Lubrifiants pour machines frigorifiques

Abrégé

A blower according to the present invention is provided with a blast fan, a motor that rotationally drives the blast fan, and a rotation shaft that is connected to the fan via a vibration prevention member and transmits rotation force of the motor to the fan, wherein the vibration prevention member is an elastic member connecting a metallic inner cylinder provided to the rotation shaft and a metallic outer cylinder provided to the blast fan, and an outer circumferential portion of the inner cylinder and/or an inner circumferential portion of the outer cylinder has a polygonal shape when viewed in a rotation shaft direction. According to the present invention, the rotation force received by the vibration prevention member acts as a compression stress on a bonding interface between the vibration prevention member and the metal. Therefore, it is possible to reduce a shear stress to the bonding interface between the vibration prevention member and the metal and reduce an excessive stress due to stress concentration.

Classes IPC  ?

• F04D 29/28 - Rotors spécialement adaptés aux fluides compressibles pour pompes centrifuges ou hélicocentrifuges
• F04D 25/08 - Ensembles comprenant des pompes et leurs moyens d'entraînement le fluide énergétique étant l'air, p.ex. pour la ventilation

Abrégé

In the present invention, the configurations set forth below are provided in order to suppress crushing of the peak part of a fin groove disposed inside of a heat transfer tube, reduce thermal contact resistance between the fin and the heat transfer tube, improve heat exchanger performance, and enable the work of assembling the heat exchanger to be easily performed. A refrigeration cycle device is configured by connecting a compressor, a heat source-side heat exchanger (7), an expansion device, and a use-side heat exchanger in series using a refrigerant pipe. The heat source-side heat exchanger is a cross fin tube-type heat exchanger that comprises: heat transfer tubes (30) which are made of an aluminum material and on an inner surface of which fin grooves are formed; and fins (20) which are made of an aluminum material and in which through-holes (20a) are formed which allow passage of the heat transfer tubes. The through-holes are formed so as to have a diameter which is greater than the outer diameter of the heat transfer tubes. After the heat transfer tubes are passed through the through-holes, the heat transfer tubes are expanded so that the outer diameter of the heat transfer tubes becomes greater than the diameter of the through holes and so that the expansion rate is less than 1.5%, and the heat transfer tubes are thereby joined to the fins. The joining portion is formed by soldering.

Classes IPC  ?

• F28F 1/32 - Eléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p.ex. avec des ailettes, avec des saillies, avec des évidements ces moyens étant uniquement à l'extérieur de l'élément tubulaire et s'étendant transversalement les moyens ayant des parties engageant d'autres éléments tubulaires
• B21D 53/08 - Fabrication d'autres objets particuliers d'échangeurs de chaleur, p.ex. radiateurs, condenseurs à la fois à partir de tôles et de tubes métalliques
• B23K 1/00 - Brasage ou débrasage
• 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 1/50 - 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
• F24F 1/54 - 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'orifice d'admission et l'orifice de sortie étant agencés sur des côtés opposés
• F25B 39/00 - Evaporateurs; Condenseurs
• F28D 1/053 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes pour une seule des sources de potentiel calorifique, les deux sources étant en contact chacune avec un côté de la paroi de la canalisation, dans lesquels l'autre source d avec des canalisations d'échange de chaleur immergées dans la masse du fluide avec canalisations tubulaires les canalisations étant rectilignes
• F28F 1/40 - Eléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p.ex. avec des ailettes, avec des saillies, avec des évidements les moyens étant uniquement à l'intérieur de l'élément tubulaire
• F28F 19/06 - Prévention de la formation de dépôts ou de la corrosion, p.ex. en utilisant des filtres en utilisant des revêtements, p.ex. des revêtements vitreux ou émaillés de métal
• F28F 21/08 - Structure des appareils échangeurs de chaleur caractérisée par l'emploi de matériaux spécifiés de métal
• B23K 101/14 - Echangeurs de chaleur
• B23K 103/10 - Aluminium ou ses alliages

Abrégé

This air conditioner outdoor unit is provided with a compressor, which compresses a refrigerant, an outdoor heat exchanger, and a plurality of outdoor fans, which ventilate the outdoor heat exchanger. Also provided are: a control board (20) that controls a refrigeration cycle; an inverter board (21) provided with a compressor invertor circuit (24), which is for driving the compressor, a plurality of fan inverter circuits (25a, 25b), which are respectively for driving the plurality of outdoor fans, and a computation device (26), which controls the compressor inverter circuit and the plurality of fan inverter circuits; and an electrical box (15) that stores the control board and inverter board. As a result, it is possible to reduce noise arising from wiring by reducing the number of wires connecting to the inverter board, and it is possible to reduce the number of computation devices for controlling inverter circuits.

Classes IPC  ?

• F24F 1/20 - Composants électriques pour éléments extérieurs séparés

Abrégé

The present invention addresses the problem of providing an air conditioner that is capable of improving the heat exchanging performance if a plurality of heat exchangers are used in series as a condenser. This air conditioner is provided with a refrigeration cycle that sequentially connects a compressor, a four-way valve, an indoor heat exchanger, a refrigerant flow-rate control mechanism, and an outdoor heat exchanger to circulate a refrigerant. The indoor heat exchanger and/or the outdoor heat exchanger has a first heat exchanger and a second heat exchanger that are connected in series, and also has a bypass flow passage that branches off between the first heat exchanger and the second heat exchanger and is joined between the second heat exchanger and the refrigerant flow-rate control mechanism. If the first heat exchanger and the second heat exchanger function as a condenser, the refrigerant flows into the second heat exchanger after passing through the first heat exchanger and the liquid refrigerant that has been condensed in the first heat exchanger bypasses the second heat exchanger via the bypass flow passage.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité
• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible

Abrégé

Provided are a display device, method, and program by which operating information pertaining to locations of abnormal occurrences when there is an anomaly can be checked immediately on a mobile terminal in an easy-to-understand manner. The display device displays operating information for an air conditioner in which an outdoor unit provided with an outdoor heat exchanger and an indoor unit provided with an indoor heat exchanger are connected by way of refrigerant piping and refrigerant is circulated by way of a compressor. The display device comprises: a control unit that determines whether an abnormality has occurred in the outdoor unit or the indoor unit while the air conditioner is operating; and a display unit that is controlled by way of the control unit so as to display time information in the horizontal direction and to display a plurality of operating information display regions arranged in the vertical direction or the horizontal direction, wherein the operating information display regions display the operating information corresponding to the time information. The control unit controls the display unit so that the operating information of the outdoor unit or the indoor unit is displayed in the operating information display region when it is determined that an abnormality has occurred in the outdoor unit or the indoor unit.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité
• F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression

Abrégé

An air conditioner in which a refrigeration cycle is configured by connecting a compressor, a four-way valve, a use-side heat exchanger, an expansion valve, and a heat-source-side heat exchanger. The air conditioner is also provided with: a hot gas bypass circuit that is connected between the discharge side of the compressor and in between the heat-source-side heat exchanger and the expansion valve; an on-off valve that opens/closes the flow path of the hot gas bypass circuit; and a control device that performs control such that either hot gas bypass defrosting operation or inverse cycle defrosting operation is selected according to the amount of frost formation on the heat-source-side heat exchanger, thereby performing defrosting operation. The control device, in the case of executing the hot gas bypass defrosting operation, performs control such that the on-off valve of the hot gas bypass circuit is opened, thereby partially supplying the refrigerant discharged from the compressor to the heat-source-side heat exchanger through the hot gas bypass circuit, and in the case of executing the inverse cycle defrosting operation, performs control to switch the four-way valve so that the refrigerant discharged from the compressor is supplied to the heat-source-side heat exchanger after passing through the four-way valve.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité

Abrégé

In order to reduce the pressure loss of compressed gas flowing in a discharge chamber and to reduce vibration and noise by facilitating the damping of the pulsation of gas discharged into the discharge chamber, a screw compressor comprises: male and female rotors; a casing having a bore in which the rotors are housed and having formed therein a suction chamber and a discharge chamber; a slide valve (9) for forming a part of the bore and provided movable in the axial direction of the rotors; leg sections (30A, 30B) provided on the discharge-side end surface of the slide valve; and discharge openings (22A, 22B) provided on the discharge chamber-side of the slide valve in order to discharge compressed gas into the discharge chamber, the compressed gas having been taken in from the suction chamber into a compression operation chamber and having been compressed therein. The discharge-side end of the slide valve is provided with: first discharge flow passages (34A, 34B) for conducting compressed gas into the discharge chamber, the compressed gas having been discharged from the discharge opening; and second discharge flow passages (35A, 35B) which are provided on the outside radially of the first discharge flow passages, are open to the first discharge flow passages and the discharge chamber, and conduct a part of the compressed gas, which flows through the first discharge flow passages, into the discharge chamber.

Classes IPC  ?

• F04C 18/16 - 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 d'un autre type qu'à axe interne avec des pistons rotatifs dentés à dents hélicoïdales, p.ex. du type ayant la forme d'un chevron, du type à vis
• 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

This invention provides a permanent-magnet dynamo-electric machine that has a small form factor, is highly efficient, and in a high-speed region, minimizes power-factor decreases caused by voltage-phase advances due to the effects of q-axis flux without reducing performance, e.g. motor efficiency or control characteristics. Letting the d-axis be the magnetic flux axis of a permanent magnet and letting the q-axis be the axis perpendicular to said d-axis and an electrical angle, concavities that are recessed inwards along the q-axis are formed in a rotor, which is shaped such that the clearance between teeth on a stator and the aforementioned concavities is greater than the clearance between said teeth and the outer surface of the rotor along the d-axis. Each concavity is substantially trapezoidal and is shaped such that the angle (θp2) between the outside left and right edges thereof is greater than the angle (θp1) between the inside left and right edges thereof. In terms of electrical angle, the former angles (θp2) are set to approximately 60°, and without forming a slit near the d-axis in the outside edge of a magnet-insertion hole, a plurality of slits are formed, at least a prescribed distance from the d-axis, on the left and right sides.

Classes IPC  ?

• H02K 1/27 - Noyaux rotoriques à aimants permanents
• 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
• H02K 1/22 - Parties tournantes du circuit magnétique
• H02K 21/16 - Moteurs synchrones à aimants permanents; Génératrices synchrones à aimants permanents avec des induits fixes et des aimants tournants avec des aimants tournant à l'intérieur des induits avec des noyaux d'induits annulaires à pôles saillants

Abrégé

The objective is to provide a refrigeration cycle device with which a decrease in the performance of the refrigeration cycle can be prevented even when a low-density refrigerant is used on the low-pressure side in the refrigeration cycle. This refrigeration cycle device is formed by sequentially connecting by means of pipes a compressor, a heat-source-side heat exchanger, a first expansion device, a supercooling heat exchanger, a second expansion device, and a usage-side heat exchanger, with R124yf or R1234ze(E) being used as the refrigerant. In addition, this refrigeration cycle device is equipped with: a bypass pipe, which branches from a liquid-side connection pipe connecting the first expansion device and the second expansion device and connects to a gas-side connection pipe on the upstream side of the compressor, thereby guiding a portion of the refrigerant flowing in the liquid-side connection pipe to the intake side of the compressor; and a third expansion device, which is provided on the bypass pipe. The supercooling heat exchanger exchanges heat between the refrigerant flowing in the liquid-side connection pipe and the refrigerant the pressure of which has been reduced by the third expansion device. The ratio of the flow volume of the refrigerant flowing in the bypass pipe and the flow volume of the refrigerant flowing in the liquid-side connection pipe after being diverted to the bypass pipe is 0.2-0.3.

Classes IPC  ?

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

Abrégé

The objective of the present invention is to properly estimate the frosted state of a heat exchanger even when the rotational frequency of a fan changes when estimating frost during a heating operation, and even when the characteristic is such that the current value does not correspond to the fan rotational frequency, as with constant-torque control of the fan motor. Therefore, this air conditioner is equipped with: an outdoor heat exchanger that exchanges heat between the air and a refrigerant flowing in the interior of this heat exchanger; an outdoor fan that blows air into the outdoor heat exchanger; an outdoor fan motor that rotationally drives the outdoor fan; an outdoor fan inverter that supplies a desired current to the outdoor fan motor; a current detector that detects the current flowing in the outdoor fan motor; and a control unit that controls the outdoor fan inverter such that the rotational frequency of the outdoor fan motor reaches a target rotational frequency. The control unit starts a defrosting operation of the outdoor heat exchanger on the basis of a detection value from the current detector during the heating operation.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité
• F25B 47/02 - Cycles de dégivrage

Abrégé

The present invention addresses the problem of providing an air conditioner configured so that, even if an air conditioning load is small, the difference between the suction pressure and discharge pressure of a compressor can be ensured while degradation in the energy saving performance and reduction in the dehumidification ability are prevented. This air conditioner is provided with: a refrigeration cycle device formed by sequentially connecting a compressor, a four-way valve which selects the direction of flow of a refrigerant, an outdoor heat exchanger, a pressure reduction device, and an indoor heat exchanger, the refrigeration cycle device allowing a refrigerant to circulate therethrough; an indoor blower for causing air to flow through the indoor heat exchanger; an outdoor blower for causing air to flow through the outdoor heat exchanger; and a control device which estimates an air conditioning load on the basis of a set temperature and an indoor air temperature, calculates a target discharge pressure of the compressor on the basis of both the air conditioning load and an outdoor air temperature, calculates a target suction pressure of the compressor on the basis of both the target discharge pressure of the compressor and a differential pressure lower limit value which is the lower limit value of the difference between the discharge pressure and suction pressure of the compressor, and performs control so that the suction pressure of the compressor is the target suction pressure.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité
• F24F 11/04 - uniquement pour commander le débit d'air
• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible

Abrégé

An air conditioner able to avoid the risk of fire and able to have a reduced number of coolant leakage detectors while using a coolant having a low global warming potential (GWP) is obtained. The air conditioner is provided with a heat source (2) configured so as to use a combustible coolant having a low global warming potential, and configured by housing inside a case (2a) freeze cycle components such as a heat exchanger (22) in which the coolant flows, an electric part box (28) in which electric parts and the like are housed, and a blower (24) driven by a motor (24a). Also, in the case, airflow is formed by the blower, and the freeze cycle components in which the coolant flows are arranged in the airflow in the case, and the electric box and electric parts such as the motor of the blower are arranged upstream from the freeze cycle components in the airflow.

Classes IPC  ?

• F24F 1/22 - Leur agencement ou leur montage
• F24F 1/24 - Refroidissement des composants électriques
• F24F 1/32 - Conduites réfrigérantes pour relier les éléments extérieurs séparés aux éléments intérieurs
• F24F 1/60 - Agencement ou montage des éléments extérieurs
• F24F 7/007 - Ventilation à écoulement forcé
• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité
• F24F 11/04 - uniquement pour commander le débit d'air
• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
• F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression

Abrégé

The purpose of the invention is to reduce defrost operation time and to be able to draw a sufficient heat required for melting frost adhering to an outdoor heat exchanger while maintaining compressor reliability. An air conditioning device comprises a compressor (3), an outdoor heat exchanger (5), and an outdoor expansion valve (6). The air conditioning device further comprises refrigerant piping (26) on the delivery side of the compressor, a defrost bypass circuit (15) that connects to refrigerant piping (27) connecting the outdoor heat exchanger and the outdoor expansion valve, a defrost expansion valve (12) that is provided in the defrost bypass circuit, a delivery pressure detection means (18) that detects the pressure on the delivery side of the compressor, and a control device (17) that controls the degree that the defrost expansion valve is opened. The control device opens the defrost expansion valve and fully closes the outdoor expansion valve when the outdoor heat exchanger is performing defrost operations, and further controls the degree that the defrost expansion valve is opened in accordance with the delivery pressure detected by the delivery pressure detection means.

Classes IPC  ?

• F25B 47/02 - Cycles de dégivrage
• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité
• F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
• F25B 40/00 - Sous-refroidisseurs, désurchauffeurs ou surchauffeurs
• 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

Abrégé

An air conditioner operation system whereby a communication path can be easily set even when using a mobile terminal to give operation commands to a target air conditioner via a wireless or cable communications network. A remote control provides to the mobile terminal, as recorded information, communications information for connecting the mobile terminal to a communications device and operation target information for identifying the air conditioner to be operated by the mobile terminal. The mobile terminal uses said recorded information and gives operation commands to the air conditioner via the communications device.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité

Abrégé

　The purpose of the present invention is to provide an air conditioner test operation application with which it is possible to input control inputs for test operation of an air conditioner from a mobile terminal, reducing costs. Accordingly, in this air conditioner test operation application for execution by a mobile terminal, through input of a prescribed control input to a control input unit of the mobile terminal, model information pertaining to units that, of the outdoor units and indoor units making up the air conditioning system, belong to a prescribed group to undergo test operation is not displayed on the display unit of the mobile terminal by the controller of the mobile terminal, whereas model information pertaining to the other group is displayed; and through input of a display switching control input to the control input unit of the mobile terminal, the model information pertaining to the other group that was not being displayed is displayed on the display unit of the mobile terminal by the controller of the mobile terminal, whereas the model information pertaining to the one group that was being displayed ceases to be displayed.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité

Abrégé

The purpose of the present invention is to be able to provide a general-purpose display device that is able to display on a display unit in an easily understandable manner operating information required for assessing a test operation state, and an application program to be executed by the display device. Accordingly, in this display device which displays on the display unit the operating information of an air conditioner in which an outdoor unit provided with an outdoor heat exchanger and an indoor unit provided with an indoor heat exchanger are connected by a refrigerant pipe and a refrigerant is circulated by a compressor, a control unit of the display device controls the display unit so that time information is displayed horizontally and a first operating information display area and a second operating information display area for displaying first operating information and second operating information, respectively, corresponding to the time information are displayed vertically side by side.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité

Abrégé

　The purpose of the present invention is to improve reliability in a scroll compressor in which a frame is fixed by welding. A scroll compressor provided with: a sealed container in which a working fluid is sealed inside; a frame fixed inside the sealed container; a fixed scroll provided with a fixed-side spiral body formed in a spiral shape on a fixed-side base plate fixed inside the sealed container; and a revolving scroll that moves in a revolving manner and that has a revolving-side spiral body provided on a revolving-side base plate, the revolving-side spiral body being made to mesh with the fixed-side spiral body, wherein the frame has a first welded point fixed by welding to the sealed container, a revolving-scroll-receiving surface for supporting the bottom surface of the revolving-side base plate on the side opposite the surface on which the revolving-side spiral body is provided, and a frame outer peripheral groove provided between the revolving-scroll-receiving surface and the first welded point, in the outer peripheral part of the frame facing the inner periphery of the sealed container.

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

The purpose of the present invention is to provide an indoor unit of an air conditioner equipped with a presence sensor, whereby it is possible to carry out detection in a predetermined area and detection in a plurality of desired areas using general-purpose presence sensors and lenses, and also to provide the air conditioner. The indoor unit of the air conditioner is provided with a plurality of air outlets for blowing air in different directions into a room, and a presence detecting means for detecting the presence of persons in the room. The presence detecting means is provided with a plurality of presence sensors that are provided corresponding to the plurality of air outlets, and a lens that is provided for each of the presence sensors. The plurality of presence sensors carry out detection in different areas corresponding to the plurality of air outlets.

Classes IPC  ?

• F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité
• F24F 13/32 - Supports pour les ensembles de conditionnement de l'air, d'humidification de l'air ou de ventilation

Abrégé

Provided is an indoor unit for an air conditioner with which the effective flow path width of a discharge opening flow path is maintained regardless of changes in the air flow volume, thereby preventing an increase in pressure loss and improving energy efficiency. This indoor unit is for an air conditioner having a fan that is arranged in the center of the indoor unit and that discharges air in the peripheral direction, a heat exchanger that is arranged at the periphery of the fan and that exchanges heat between a refrigerant and the air from the fan, and a drain pan for collecting water condensing in the heat exchanger. In this indoor unit a separation-generating part is formed at the downstream wall of the drain pan on the downstream side of the heat exchanger, with this separation-generating part being formed between the uppermost end of the downstream wall and the lower end part of the drain pan and from the uppermost end of the downstream wall toward an inner wall descending part on the downstream side. In addition, a separation-inhibiting part is formed by the inner wall descending part.

Classes IPC  ?

• F24F 13/22 - Moyens pour éviter la condensation ou pour évacuer le condensat
• F24F 13/068 - Bouches pour diriger ou distribuer l'air dans des pièces ou enceintes, p.ex. diffuseur d'air de plafond formées de parois, plafonds ou planchers perforés
• F24F 13/20 - Enveloppes ou couvercles