Patent ID: 6647737
Filing Date: 2003-11-18
Classification: B60H,F04B

Abstract:
An air conditioning apparatus provided with a refrigerant circuit that includes a variable displacement compressor, wherein the air conditioner comprises:a displacement control mechanism, which controls the displacement of the compressor in accordance with the pressure difference between a first pressure monitoring point and a second pressure monitoring point such that the pressure difference seeks a predetermined target value, wherein the first and second pressure monitoring points are located in the refrigerant circuit; a pressure introducing passage, which connects the refrigerant circuit to the displacement control mechanism for supplying the pressure of the refrigerant in the refrigerant circuit from one of the pressure monitoring points to the displacement control mechanism, wherein the pressure introducing passage has an opening to the refrigerant circuit; and an inlet member, which is located at a position corresponding to the opening, wherein the inlet member has a pressure introducing port that functions as the one pressure monitoring point, wherein the pressure of the refrigerant in the refrigerant circuit is supplied from the pressure introducing port to the displacement control mechanism through the pressure introducing passage, and wherein the inlet member is arranged to be capable of changing the relationship between the flow rate in the refrigerant circuit and the pressure difference.