초록 ▼

An air conditioning system 100 may include a compressor 101 having a driving chamber 110, a cooling circuit 151, a heating circuit 152 and a controller 189. This system may release high pressure refrigerant from the compressor discharge port 120 into the compressor driving chamber 110 by means of th

An air conditioning system 100 may include a compressor 101 having a driving chamber 110, a cooling circuit 151, a heating circuit 152 and a controller 189. This system may release high pressure refrigerant from the compressor discharge port 120 into the compressor driving chamber 110 by means of the controller 189. The controller 189 may include a selector 181, a first refrigerant releasing means 183 and a second refrigerant releasing means 185. The selector 181 connects the discharge port 120 and the driving chamber 110 by both the first and second refrigerant releasing means 183, 185 when discharge pressure of the refrigerant has reached a predetermined high-pressure state during operation of the heating circuit 152. When the discharge pressure of the refrigerant results an abnormal high pressure state during the operation of the heating circuit 152, the high pressure refrigerant is released from the discharge port 120 into the driving chamber 110 not only by a single refrigerant releasing means 185 but by double refrigerant releasing means 183, 185. Therefore, the high pressure refrigerant can be swiftly released into the driving chamber 110 to increase the pressure in the driving chamber 110 and the necessary time for reducing the compressor discharge pressure can be minimized. Thus, the abnormal high discharge pressure can be quickly alleviated.

대표청구항 ▼

[ What is claimed is:] [1.]1. 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 he

[ What is claimed is:] [1.]1. 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.