Patent ID: 7481071
Filing Date: 2009-01-27
Classification: F25B,Y02A,Y02E

Abstract:
1. A cooling/heating apparatus using a cogeneration system comprising: an engine which drives a generator to generate electricity; a cooling/heating unit which comprises at least one compressor, a 4-way valve, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger, to establish a heat pump refrigerant cycle; a discharge-side refrigerant heating unit which supplies heat of exhaust gas generated from the engine to a discharge-side refrigerant line connected to the compressor; a discharge-side refrigerant temperature sensor which senses a temperature of a refrigerant passing through the discharge-side refrigerant line; a bypass unit which bypasses the exhaust gas heat supplied to the discharge-side refrigerant line via the discharge-side refrigerant heating unit when the refrigerant temperature sensed by the discharge-side refrigerant temperature sensor is not lower than a predetermined temperature, to cut off the supply of the exhaust gas heat or to adjust an amount of the supplied exhaust gas heat; and a suction-side refrigerant heating unit which supplies heat of cooling water used to cool the engine and the heat of the exhaust gas generated from the engine to a suction-side refrigerant line connected to the compressor.