Outdoor machine of air conditioner and control method thereof
A control method and technology for air conditioners, which are applied in air conditioning systems, heating and ventilation control systems, refrigerators, etc., can solve the problems that the temperature of the refrigerant cannot be fully cooled, and the exhaust temperature of the compressor cannot be effectively reduced, so as to improve the cooling effect. Effect
Inactive Publication Date: 2009-03-18
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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Problems solved by technology
However, the outdoor unit of the air conditioner in the prior art has the following disadvantages: However, the prior art as described above has the following disadvantages: the temperature of the refrigerant supplied to the indoor unit through the outdoor heat exchanger cannot be sufficiently cooled, and at the same time When it is hot, it cannot effectively reduce the discharge temperature of the compressor
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[0018] Below in conjunction with accompanying drawing and specific implementation the present invention is described in further detail:
[0019] Such as Figure 2 to Figure 4 As shown, in the one-driver-multiple air conditioner of the present invention, multiple indoor units are connected to one or more than two outdoor units, and there are refrigerant pipes through which liquid refrigerant flows between the outdoor units and the indoor units, and the refrigerant pipes communicate with each other. The outdoor unit of the air conditioner includes: a fixed speed compressor 120, an inverter compressor 120', a liquid storage tank 130, an outdoor heat exchanger 140 and a solenoid valve 150; Liquid tank 130. The liquid storage tank 130 filters the liquid refrigerant, and guides only the gaseous refrigerant to the compressors 120 and 120', and the refrigerant discharged from the constant speed compressor 120 and the inverter compressor 120' is collected and flows into the heat excha...
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The invention discloses an outdoor unit for an air conditioner and a control method thereof. The outdoor unit comprises a constant speed compressor, an inverter compressor, a liquid storage tank, an outdoor heat exchanger, an electromagnetic valve, a supercooler and a supercooling expansion valve, wherein the supercooler consists of an inner pipe and an outer pipe, one side of the inner pipe is connected with a refrigerant pipe which flows through the electromagnetic valve, while the other side is connected with a refrigerant piping of an indoor unit heat exchanger, and a refrigerant of the outer pipe flows into the compressors through the supercooling expansion valve and the liquid storage tank; when the air conditioner refrigerates, the supercooling expansion valve is opened or closed by comparing the temperature difference at both ends of the supercooling expansion valve. The outdoor unit and the control method have the advantages that the supercooling expansion valve is arranged between the outdoor heat exchanger and an indoor unit, so the whole refrigeration effect of the air conditioner and the service life of the compressors during the heating are improved by controlling the opening and closing of the supercooling expansion valve.
Description
technical field [0001] The invention relates to an outdoor unit of an air conditioner, in particular to a cooling expansion valve installed on a refrigerant pipe of the outdoor unit of the air conditioner to improve the cooling effect and protect the compressor. Background technique [0002] Generally, the air conditioner is based on the heat exchange of the hot air sucked into the room with a low-temperature refrigerant, and then discharges these to the room, which repeatedly acts on the cooling room, or acts on the cooling / heating system in the heating room in the opposite direction, and is controlled by the compressor - condensing Device - expansion valve - evaporator - refrigeration cycle machine. [0003] As we all know, air conditioners can be roughly divided into split-type air conditioners in which an outdoor unit and an indoor unit are installed separately, and integrated air conditioners in which an outdoor unit and an indoor unit are integrally formed. In additio...
Claims
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IPC IPC(8): F24F1/00F24F11/02F24F1/06F25B41/06
Inventor 齐鹏
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD