Patent ID: 6247322
Filing Date: 2001-06-19
Classification: B60H,F04B,F25B

Abstract:
An air conditioning system comprising:a compressor defining a driving chamber, a suction port, and a discharge port, wherein compressed refrigerant may be released from the discharge port into the driving chamber to decrease the compressor output discharge capacity,a heating circuit comprising a heat exchanger and a passage extending from the discharge port to the suction port, through the heat exchanger, anda controller comprising a selector, a first refrigerant releasing means and a second refrigerant releasing means, the controller decreasing the compressor output discharge capacity by releasing the refrigerant from the discharge port into the driving chamber, wherein the first and second refrigerant releasing means each separately connect the discharge port to the driving chamber, andwherein the selector connects the discharge port to the driving chamber by both the first and second refrigerant releasing means when the compressor discharge pressure reaches a predetermined high-pressure state during the operation of the heating circuit.