Control device for air conditioner for motor vehicle
专利汇可以提供Control device for air conditioner for motor vehicle专利检索，专利查询，专利分析的服务。并且PURPOSE: To stabilize refrigeration cycle even when a compressor is in a capacity control condition by controlling the opening of an expansion valve in a stepped manner according to the liquid level of an accumulator thereby maintaining the liquid level of the accumulator within a specified range.
CONSTITUTION: Gas-state refrigerant of high temperature and high pressure discharged from a compressor 21 is condensed in a condenser 22 to become liquid-state refrigerant which is decompressed through an electronic expansion valve 23 to become gas-liquid mixed refrigerant, and then evaporates in an evaporator 24 while exchanging heat with room air. The mixed-state refrigerant goes from the evaporator 24 to an accumulator 25 where liquid-state refrigerant is stored and gas-state refrigerant is returned to the compressor 21. In the above device, detected result from a liquid level sensor 26 is inputted to a liquid level decision unit 27 to decide if the detected result is within a specified range. Based on the decision result from the liquid level decision unit 27, the opening of the electronic expansion valve 23 is controlled by means of a control unit 28.
COPYRIGHT: (C)1987,JPO&Japio，下面是Control device for air conditioner for motor vehicle专利的具体信息内容。
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