Patent ID: 9453671
Filing Date: 2016-09-27
CPC Classification: F25B

Claim Text:
1. A refrigerating and air-conditioning apparatus using an non-zeotropic refrigerant mixture as a refrigerant, the refrigerating and air-conditioning apparatus comprising: a refrigerant cycle configured by a compressor, a condenser, an expansion device, and an evaporator connected by a refrigerant pipeline an operating state detection sensor configured to detect, as an operating state of the compressor, a pressure of the refrigerant at a suction side of the compressor, a pressure of the refrigerant at a discharge side of the compressor, a temperature of the refrigerant at the suction side of the compressor, and a rotation speed of the compressor, a power sensor configured to detect a first power consumption of the compressor, and a composition detection circuit that retains data indicating a one-to-one relationship between the first power consumption and a refrigerant composition, wherein the composition detection circuit is configured to