Refrigeration cycle device, equipment, and refrigeration cycle method

摘要

A refrigeration cycle device includes: a compressor that constitutes a refrigeration cycle and compresses a supplied refrigerant; a refrigerant-retaining container that retains the refrigerant into which lubricating oil for the compressor is mixed, and which separates the gas refrigerant from the liquid refrigerant, and sends out the gas refrigerant to the compressor; a refrigerant conveying pump that conveys a fluid mixture including the liquid refrigerant and the lubricating oil retained in the refrigerant-retaining container; and an internal heat exchanger that changes the liquid refrigerant conveyed out from the refrigerant-retaining container by the refrigerant conveying pump to the gas refrigerant, and provides the compressor with the gas refrigerant together with the lubricating oil. Since the refrigerant conveying pump conveys the fluid mixture containing the liquid refrigerant and the lubricating oil retained in a refrigerant-retaining container, stable operation is possible.

主权项

1. A refrigeration cycle device comprising:
a compressor that constitutes a refrigeration cycle and compresses a supplied refrigerant; a refrigerant-retaining container that retains a refrigerant into which lubricating oil for the compressor has been mixed, and at the same time, that separates the gas refrigerant from the liquid refrigerant, and that sends out the gas refrigerant to the compressor; a conveying device that conveys out a fluid mixture including the liquid refrigerant and the lubricating oil retained within the refrigerant-retaining container; a vaporizer that changes the liquid refrigerant in the fluid mixture conveyed out from the refrigerant-retaining container by the conveying device to the gas refrigerant, and provides the compressor with the gas refrigerant together with the lubricating oil, and a bypass circuit that interconnects the vaporizer and a refrigerant line interconnecting the refrigerant-retaining container and the compressor, and that supplies the gas refrigerant together with the lubricating oil to the compressor.