Patent ID: 6604371
Filing Date: 2003-08-12
Classification: F04B,F04C,F25B,F25D,Y02B

Abstract:
An oil amount detector of a compressor having a case filled with a lubrication oil, sucking and compressing refrigerant to discharge the refrigerant from the case; the detector comprising:an oil holding tank communicated to the case; a pressuring pipe for introducing part of the refrigerant discharged from the compressor to the oil holding tank for use in pressurization for allowing oil to flow from the oil holding tank; a return pipe for allowing oil flowing out of the oil holding tank to return to the case of the compressor; a first temperature sensor for detecting a temperature of a refrigerant which is introduced to the oil holding tank; a second temperature sensor for detecting a temperature of oil flowing out from the oil holding tank; and detection means for detecting an oil amount in the case from a contrast between the detected temperature of the first temperature sensor and the detected temperature of the second temperature sensor.