Air conditioner
A technology of air-conditioning equipment and control devices, which is applied to air handling equipment, mechanical equipment, lighting and heating equipment, etc., and can solve problems such as reducing the working volume of compressors
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[0027] The following will refer to Figures 1 to 10 An embodiment of the automobile air conditioner of the present invention will be described. Such as figure 1 As shown, the refrigeration circuit (refrigerant circuit) of the air conditioner includes a displacement compressor and an external refrigerant circuit 30 . For example, the external refrigerant circuit 30 has a condenser 31 , a thermal expansion valve 32 , or a pressure reducing device, and an evaporator 33 . A temperature sensor 34 is arranged near the outlet of the evaporator 33 , or downstream of the evaporator 33 . The opening of the expansion valve 32 is controlled by a feedback control program based on the temperature measured by the temperature sensor 34 and the evaporation pressure in the evaporator (evaporator outlet pressure). Therefore, the amount of liquid refrigerant supplied to the evaporator by the expansion valve 32 is equivalent to the heat load acting on the evaporator, thereby regulating the ref...
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