A heat exchanger and a manufacturing method therefor, an electric control box, and an air conditioning system. The heat exchanger (6) comprises at least two plates (631, 632) and a connecting piece (64); the at least two plates (631, 632) are stacked, and are separately provided with a plurality of micro-channels (610, 611); the connecting piece (64) is sandwiched between adjacent plates (631, 632); a brazing material is provided on two sides of the connecting piece (64); the brazing material is used for brazing and fixing the connecting piece (64) and the plates (631, 632) on the two sides of the connecting piece (64). According to the heat exchanger (6), the brazing process is simple, the brazing reliability is high, and processing cost can be reduced.
F24F 1/0063 - 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 le montage ou la disposition des échangeurs de chaleur
F24F 1/24 - Refroidissement des composants électriques
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
An air conditioning system. The air conditioning system comprises an indoor heat exchanger (5), an outdoor heat exchanger (4), an economizer, and an electric control box (7); the economizer is disposed between the indoor heat exchanger (5) and the outdoor heat exchanger (4); the economizer comprises a heat exchange main body (61); the heat exchange main body (61) is provided with a plurality of first micro-channels (610) for a first refrigerant flow to flow and a plurality of second micro-channels (611) for a second refrigerant flow to flow; the second refrigerant flow absorbs heat from the first refrigerant flow so that the first refrigerant flow is subcooled, or the first refrigerant flow absorbs heat from the second refrigerant flow so that the second refrigerant flow is subcooled; the economizer is further configured to dissipate heat for an electronic component (71) in the electric control box (7). The economizer of the air conditioning system can not only improve the degree of subcooling, but also dissipate heat for the electric control box.
Disclosed in the present application are a heat exchanger, an electric control box and an air conditioning system. The heat exchanger of the present application comprises: a heat exchange main body and a collecting pipe assembly, wherein a microchannel is provided in the heat exchange main body; the collecting pipe assembly comprises at least two collecting pipes; and at least part of the microchannel penetrates one of the at least two collecting pipes and is inserted into the other collecting pipe. The heat exchanger of the present application has a simple structure and a relatively small size.
F28D 7/00 - Appareils échangeurs de chaleur comportant des ensembles de canalisations tubulaires fixes pour les deux sources de potentiel calorifique, ces sources étant en contact chacune avec un côté de la paroi d'une canalisation
F28F 9/00 - Carters; Boîtes de distribution; Supports auxiliaires pour les éléments; Eléments auxiliaires dans les carters
4.
CONTROL METHOD AND DEVICE FOR LOW-TEMPERATURE COOLING AIR VALVE
A control method and device for a low-temperature cooling air valve. The method comprises: obtaining an actual system pressure, an ambient temperature, and a system energy requirement; and determining an opening degree of a low-temperature cooling air valve according to the actual system pressure, the ambient temperature, and the system energy requirement. The control method is employed to perform combined control on the low-temperature cooling air valve according to the system high pressure, the ambient temperature and the system energy requirement, and can refine the range of opening degrees of the low-temperature cooling air valve and determine an opening degree thereof, thereby facilitating cooling operation of a multi-split air conditioning system in an ultra-low temperature environment, while also increasing the reliability of the cooling operation at low temperature and expanding the operation range.
Provided in the present invention are a method and a device for controlling a low-temperature refrigeration air valve, wherein the method comprises: acquiring a current environment temperature; according to the current environment temperature, determining an initial target pressure of the current system and an initial opening degree of an air valve; acquiring an actual pressure of the current system and the current system target pressure; and adjusting the opening degree of the air valve according to a difference value between the current system target pressure and the current system actual pressure, wherein the air valve is arranged on a low temperature cover. Therefore, according to the low-temperature refrigeration air valve control method provided in the embodiment of the present invention, the opening degree of the air valve is adjusted according to the difference value between the current system target pressure and the actual pressure of the current system, so as to meet the refrigeration needs of a user in an ultra-low temperature environment, and expand the scope of refrigeration operations.
An air conditioner, and a control method and device for a heating system thereof, wherein the method comprises: obtaining ambient temperature and external heat exchanger evaporation temperature; obtaining external heat exchanger evaporation pressure, and obtaining, according to the external heat exchanger evaporation pressure, corresponding saturation temperature; and controlling a base plate heating device (20) according to the ambient temperature, the external heat exchanger evaporation temperature, or the saturation temperature. Hence, the base plate heating device (20) is controlled according to the ambient temperature, the saturation temperature corresponding to the external heat exchanger evaporation pressure, or the external heat exchanger evaporation temperature, to avoid freezing of the base plate of an air conditioner, and ensure normal drainage of the base plate during defrosting, thereby improving the stability and reliability of the air conditioner.
A two-pipe enhanced vapor injection outdoor machine and a multi-split system. The two-pipe enhanced vapor injection outdoor machine comprises: an outdoor heat exchanger (10) and a second interface (14); an enhanced vapor injection compressor (16), comprising an air outlet (162), an air return port (164), and an injection port (166); a changing-over component (18), comprising a first end to a fourth end; a supercooler (20) comprising a main heat-exchange flow path and an auxiliary heat-exchange flow path which are communicated with each other, the main heat-exchange flow path being connected to the second interface (14), and the auxiliary heat-exchange flow path being connected to the injection port (166); and a throttle component (22), one end of the throttle component (22) being connected to an outlet of the main heat-exchange flow path, and the other end being connected to an inlet of the outdoor heat exchanger (10).
F25B 29/00 - Systèmes de chauffage et de refroidissement combinés, p.ex. fonctionnant alternativement ou simultanément
F24F 1/32 - Conduites réfrigérantes pour relier les éléments extérieurs séparés aux éléments intérieurs
F24F 1/0003 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale caractérisés par un agencement modulaire, c. à.d dans lesquels des parties du système de conditionnement d’air, p.ex. l'évaporateur et le condenseur, sont disposées dans des éléments séparés
F25B 41/20 - Disposition des soupapes, p.ex. de soupapes marche-arrêt ou de soupapes de régulation de débit
The present disclosure relates to the field of air conditioning, in particular to an oil return control method for a three-pipe air conditioning system. The three-pipe air conditioning system comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a gas-liquid separator, a first pipeline, a second pipeline and a third pipeline. The oil return control method comprises the following steps: controlling the compressor to operate at a first frequency in a refrigerating mode; judging the operation duration of the refrigerating mode reaches a first preset time or not; operating the three-pipe air conditioning system to enter an oil return state, in which the compressor, the third pipeline, the second pipeline and the gas-liquid separator are controlled to be in sequential fluid communication to form a refrigerant circulation loop, and the compressor, the outdoor heat exchanger, the first pipeline, the indoor heat exchanger, the second pipeline and the gas-liquid separator are also controlled to be in sequential fluid communication. Also provided is an oil return control device of a three-pipe air conditioning system, a non- transitory computer-readable storage medium and the three-pipe air conditioning system. The present disclosure aims to quickly and smoothly realize the oil return process of a three-pipe air conditioning system in a refrigerating-alone mode or a heating-alone mode, in which one of the three pipelines are in the refrigerant circulation, where the lubricating oil in this pipeline cannot smoothly return to the compressor.
F24F 11/30 - Aménagements de commande ou de sécurité en relation avec le fonctionnement du système, p.ex. pour la sécurité ou la surveillance
F24F 1/0003 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale caractérisés par un agencement modulaire, c. à.d dans lesquels des parties du système de conditionnement d’air, p.ex. l'évaporateur et le condenseur, sont disposées dans des éléments séparés
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
9.
TWO-PIPE ENHANCED-VAPOR-INJECTION OUTDOOR UNIT AND MULTI-SPLIT SYSTEM
A two-pipe enhanced-vapor-injection outdoor unit and a two-pipe enhanced-vapor- injection multi-split system are provided. The two-pipe enhanced-vapor-injection outdoor unit includes an outdoor heat exchanger, an enhanced-vapor-injection compressor, a reversing assembly, a super cooler, a throttling assembly and a first pipe. The reversing assembly includes a first end and a second end connected with a gas discharge port and a gas return port, respectively. A main heat- exchange flow path is connected with the first port and the second port, respectively. An auxiliary heat-exchange flow path is connected with the injection port. The throttling assembly includes two ends connected with an outlet of the main heat-exchange flow path and an inlet of the outdoor heat exchanger. The first pipe includes a first end connected with an outlet of the outdoor heat exchanger, and a second end arranged between the throttling assembly and the main heat-exchange flow path.
F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
F24F 1/0003 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale caractérisés par un agencement modulaire, c. à.d dans lesquels des parties du système de conditionnement d’air, p.ex. l'évaporateur et le condenseur, sont disposées dans des éléments séparés
10.
AIR CONDITIONER DEFROSTING CONTROL METHOD AND DEVICE THEREOF
An air conditioner defrosting control method and a device thereof. The air conditioner defrosting control method comprises: entering a defrosting mode, and detecting the number of defrosting operations executed in the present defrosting mode; according to the number of defrosting operations and an initially set defrosting time, setting the present set defrosting time recording the present defrosting time; detecting and determining that the present defrosting time reaches the present set defrosting time; updating the number of defrosting operations; and setting the next set defrosting time. By means of the air conditioner defrosting control method and device, the maximum defrosting time can be self-adaptively adjusted without affecting the use of a user, thereby preventing the accumulation of a frosting layer, and avoiding the risk of pipes bursting.
An air conditioning system and a defrosting control method and device thereof. The defrosting control method comprises the following steps: when an air conditioning system performs defrosting each time, obtaining defrosting exit time determined in previous defrosting, and controlling the air conditioning system to perform this defrosting according to the defrosting exit time determined in the previous defrosting (S1); in this defrosting process of the air conditioning system, obtaining the temperature of an outdoor environment, and obtaining the temperature of an outlet of an outdoor heat exchanger (S2); determining the temperature of the outdoor environment and the temperature of the outlet of the outdoor heat exchanger (S3); and if the temperature of the outlet of the outdoor heat exchanger is lower than a first preset temperature and lasts a preset time and the temperature of the outdoor environment is lower than a second preset temperature, obtaining forced defrosting time serving as the defrosting exit time of the next defrosting of the air conditioning system, and storing the time (S4).
A pressure ratio control method of an air conditioning system comprises the following steps: (S1) during operation of an air conditioning system, regularly obtaining an actual pressure ratio of a compressor; (S2) determining whether the actual pressure ratio is greater than or equal to a first pressure ratio corresponding to a current level; (S3) if so, controlling the compressor to operate at a lower level; (S4) if not, further determining whether the actual pressure ratio is less than a second pressure ratio corresponding to the current level; and (S5) if so, controlling the compressor to operate at a higher level. The control method adjusts a maximum limit output of a compressor step by step, and controls the pressure ratio to be less that a target limit value to prevent the compressor from operating beyond a safe operating range for a long time, thereby ensuring reliability of the compressor. The invention further discloses an air conditioning system and a control device.
A switching device (100) for a multi-split air conditioner, comprising: a housing (1), a gas-liquid separator (2), multiple first indoor unit interface pipes (3), at least one heat exchange component (4), and multiple second indoor unit interface pipes (5). The gas-liquid separator (2) is provided with an inlet (21) to an outdoor unit, a first outlet (22), and a second outlet (23). The multiple first indoor unit interface pipes (3) and the multiple second indoor unit interface pipes (5) are spaced from each other in a first direction. The first outlet (22) is connected to multiple first interfaces by means of the multiple first indoor unit interface pipes (3), respectively. The second indoor unit interface pipes (5) and the first indoor unit interface pipes (3) are spaced apart in a second direction. Some of the first indoor unit interface pipes (3) and some of the second indoor unit interface pipes (5) are spaced apart from the rest of the first indoor unit interface pipes (3) and the rest of the second indoor unit interface pipes (5) in the second direction. Moreover, also disclosed is a multi-split air conditioner having the switching device (100).
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 29/00 - Systèmes de chauffage et de refroidissement combinés, p.ex. fonctionnant alternativement ou simultanément
14.
HORIZONTAL GAS-LIQUID SEPARATOR FOR AIR CONDITIONER, AND AIR CONDITIONER
A horizontal gas-liquid separator (100) for an air conditioner comprises a housing (10) and a refrigerant inlet pipe (120). The housing (10) is provided with a cavity (110), a gas outlet (111) is formed in the top of the cavity (110), and a liquid outlet (112) is formed in the bottom of the cavity (110). A smallest distance between the gas outlet (111) and a left sidewall of the cavity (110) is L1, and a smallest distance between the liquid outlet (112) and the left sidewall of the cavity (110) is L2. The refrigerant inlet pipe (120) is located on a left side wall of the housing (10), and one end of the refrigerant inlet pipe (120) extends into the cavity (110). The distance between an end face of the refrigerant inlet pipe (120) and the left sidewall of the cavity (110) is L3, L3=L1 and L3=L2.
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
15.
BACK-UP POWER SOURCE APPARATUS IN INDOOR UNIT, CONTROLLING METHOD THEREOF AND MULTI-SPLIT AIR CONDITIONING SYSTEM
A back-up power source apparatus (100) in an indoor unit of a multi-split air conditioning system includes first and second voltage detecting circuits (10, 20) and a control circuit (30) connected with the first and second voltage detecting circuits (10, 20). The first and second voltage detecting circuits (10, 20) detect voltages of first and second power sources (401, 402) on a mainboard (200) of the indoor unit in real time respectively, and the control circuit (30) controls the back-up power source apparatus (100) to enter a corresponding operation state according to the voltages of the first and/or second power sources (401, 402). A controlling method of the back-up power source apparatus (100) and a multi-split air conditioning system including the back-up power source apparatus (100) are also provided.
H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique
brevets
