COMPRESSOR, REFRIGERATION CYCLE DEVICE, AND LIQUID HEATING AND SUPPLY DEVICE

PROBLEM TO BE SOLVED: To provide a compressor, a refrigeration cycle device and a liquid heating and supply device, capable of stably acquiring a temperature correlating to a temperature of a compressed refrigerant discharged from a compression mechanism section.SOLUTION: A compressor 19 having a compression mechanism section 53, 55 for compressing a refrigerant includes: a chamber 51c having a direct-injection heat conduction region 60 where the compressed refrigerant at high temperature and high pressure outgoing from a discharge port of the compression mechanism section 53, 55 is directly injected to transfer hot heat of the compressed refrigerant; and a compressed refrigerant temperature sensor 20 disposed outside the chamber 51c corresponding to the direct-injection heat conduction region 60. A heat pump unit control section 47 controls the opening of an electric expansion valve 23 to allow the temperature of the compressed refrigerant detected by the compressed refrigerant temperature sensor 20 to follow a target temperature.