Patent ID: 6769481
Filing Date: 2004-08-03
Classification: F02G,F24F,F25B,Y02B,Y02T

Abstract:
An outdoor unit for a gas heat pump type air conditioner, in which a compressor for compressing a refrigerant is driven by a gas engine, and which comprises a heat pump for utilizing waste heat of said gas engine to perform heating and cooling operations:wherein said outdoor unit comprises a gas engine portion comprising said gas engine, a cooling water system comprising a radiator, an exhaust gas system for introducing exhaust gas discharged from said gas engine outside of said outdoor unit, and a fuel intake system for supplying fuel and air in said gas engine; and a refrigerant circuit comprising said compressor, an outdoor heat exchanger apparatus for exchanging heat between said refrigerant and air introduced therein, and an expansion valve for decompressing and expanding said refrigerant in a liquid state during the cooling operation, wherein said radiator is connected in said cooling water system without a valve; and an outdoor heat exchanger unit is provided in said outdoor unit in which said radiator and said outdoor heat exchanger apparatus are arranged in series in the flow direction of an outdoor air introduced in said outdoor heat exchanger unit; said radiator is positioned downstream with respect to said outdoor heat exchanger apparatus in the flow direction of an outdoor air introduced in said outdoor heat exchanger unit; and an interval is between said radiator and said outdoor heat exchanger apparatus; wherein said outdoor heat exchanger apparatus comprises at least three heat exchangers arranged in series in the flow direction of outdoor air introduced into said outdoor heat exchanger unit, at least one heat exchanger which is not arranged at both sides of said outdoor heat exchanger apparatus is a warm water heat exchanger belonging to said cooling water system, and said cooling water system further comprises a further valve for selectively introducing cooling water of said gas engine into said warm water heat exchanger, wherein said radiator is connected in said cooling water system so as to receive cooling water simultaneously with said warm water heat exchanger.