Patent ID: 6192696
Filing Date: 2001-02-27
Classification: C09K,F25B

Abstract:
A refrigerating apparatus using a non-azeotropic refrigerant and provided with a refrigerant circuit in which a capacity variable compressor, a heat source unit-side heat exchanger, a throttling device, and a using-side heat exchanger are connected by the piping, a capability variable fan for said heat source unit-side heat exchanger, a first pressure detector at a discharge pipe of said compressor, a second pressure detector at a suction pipe of said compressor, and a refrigerant cyclic-composition detecting device, comprising:fan/compressor capacity controlling means for determining a condensing temperature of said heat source unit-side heat exchanger or said using-side heat exchanger on the basis of a refrigerant cyclic composition detected by said cyclic-composition detecting device and a pressure detected by said first pressure detector, or determining an evaporating temperature of said heat source unit-side heat exchanger or said using-side heat exchanger on the basis of the refrigerant cyclic composition detected by said cyclic-composition detecting device and a pressure detected by said second pressure detector, so as to control the capacity of said compressor and the capability of said fan for said heat source unit-side heat exchanger so that the condensing temperature and the evaporating temperature are set to respective predetermined target values.