Morgan & Finnegan, LLP
CONTROL VALVE USED FOR A VARIABLE DISPLACEMENT COMPRESSOR INSTALLED IN A REFRIGERANT CIRCUIT HAVING AT LEAST ONE OF A FIRST PRESSURE CHAMBER AND A SECOND PRESSURE CHAMBER FORMING PART OF THE REFRIGERANT CIRCUIT
A control valve is used for a variable displacement compressor installed in a refrigerant circuit of a vehicle air conditioner. The control valve has a valve housing. A valve chamber is defined in the valve housing. A valve body is accommodated in the valve chamber. A pressure sensing chamber is defined in the valve housing. A pressure sensing member separates the pressure sensing chamber into a first pressure chamber and a second pressure chamber. The pressure at a first location in the refrigerant circuit is applied to the first pressure chamber. The pressure at a second location in the refrigerant circuit, which is downstream of the first location, is applied to the second pressure chamber. The pressure sensing member moves the valve body in accordance with the pressure difference between the first pressure chamber and the second pressure chamber such that the displacement of the compressor is varied to counter changes of the pressure difference. At least one of the first pressure chamber and the second pressure chamber forms a part of the refrigerant circuit.
Kabushiki Kaisha Toyota Jidoshokki
F F F F
F04B F04B F04B F04B
additional inventional additional additional
Masakazu Ryo Taku Naoya Yuji Kazuya Masaki Toshiro Ken Satoshi Izuru
Murase Matsubara Adaniya Yokomachi Hashimoto Kimura Ota Fujii Suitou Umemura Shimizu