Patent ID: 6698217
Filing Date: 2004-03-02
Classification: F25B,F25D,Y02B

Abstract:
A refrigeration apparatus comprising:a refrigerant circuit (1E) including first, second and third compressors (2A, 2B, 2C) connected in parallel each other, a heat source side heat exchanger (4), an air-conditioning heat exchanger (41) for air-conditioning the inside of a room, a cooling heat exchanger (45, 51) for cooling the inside of a cold store, and first and second expanding mechanisms (42, 46, 52) for expanding a refrigerant; and breakdown detecting means (80) for detecting the breakdown of at least the second compressor (2B); the refrigeration apparatus being capable of freely performing at least a cooling operation and a freezing operation, wherein the cooling operation is performed by actuating the second compressor (2B) and the third compressor (2C), the cooling operation being achieved by condensing a refrigerant discharged from the second compressor (2B) and the third compressor (2C) by means of the heat source side heat exchanger (4), expanding it by the first expanding mechanism (42), evaporating it by the air-conditioning heat exchanger (41), and returning it to the second compressor (2B) and the third compressor (2C), and further, the freezing operation is performed by actuating the first compressor (2A) and the second compressor (2B), the freezing operation being achieved by condensing a refrigerant discharged from the first compressor (2A) and the second compressor (2B) by means of the heat source side heat exchanger (4), expanding it by the second expanding mechanism (46, 52), evaporating it by the cooling heat exchanger (45, 51), and returning it to the first compressor (2A) and the second compressor (2B); and the cooling operation being continued by actuating the first compressor (2A) in place of the second compressor (2B) if the breakdown of the second compressor (2B) is detected during the cooling operation.