TWO-STAGE COMPRESSOR, REFRIGERATING CYCLE DEVICE AND REFRIGERATOR

摘要

PROBLEM TO BE SOLVED: To provide a two-stage compressor for a two-stage refrigerating cycle, which is low in vibration as well as noise, high in reliability and having different evaporating temperatures.;SOLUTION: A sealed vessel, having a low pressure suction unit for sucking low-pressure refrigerant from outside and an intermediate pressure suction unit for sucking intermediate-pressure refrigerant from outside, a low stage side compressing mechanism unit, received in the sealed vessel and compressing low-pressure refrigerant outside of the sealed vessel, which is sucked through a low-pressure sucking unit, to boost the same to the intermediate pressure, and a high-stage side compressing mechanism unit, received in the sealed vessel and compressing the refrigerant after mixing the intermediate-pressure refrigerant, discharged out of the low-stage side compressing mechanism unit into the sealed vessel, into the intermediate-pressure refrigerant outside of the sealed vessel, which is sucked through the intermediate-pressure sucking unit, and thereafter compressing the refrigerant to boost the same to a high pressure, are provided while the inside of the sealed vessel is kept in a low-pressure atmosphere.;COPYRIGHT: (C)2002,JPO