REFRIGERATION DEVICE

摘要

An oil container (32), into which separated refrigeration machine oil flows and is contained, is connected to an oil separator (22). An oil outlet pipe (35), in which the refrigeration machine oil in the oil container (32) flows, is connected between the oil container (32) and a suction pipe (2b) of a compressor (21). An open/close valve (33) is provided in the oil outlet pipe (35). The surplus amount of refrigeration machine oil received in the compressor (21) is calculated based on the length of connection piping of a refrigeration circuit (20), and the open/close valve (33) is switched to an open state at predetermined intervals previously set according to the amount of the surplus oil.