Patent ID: 9115715
Filing Date: 2015-08-25
Classification: F04C

Abstract:
1. A rotary compressor comprising: a drive mechanism including a vertically-extending drive shaft formed with an eccentric part; and a compression mechanism including a lower end surface of the eccentric part defining a thrust bearing surface slidably contacting an upper end surface of the lower end plate, the drive shaft having an oil path formed inside the drive shaft, lubrication oil circulating through the oil path, and the eccentric part having a pressure reduction groove formed therein, the pressure reduction groove opening at part of the thrust bearing surface close to an inner circumferential side, extending in a circumferential direction so as to surround the drive shaft, and being configured to reduce a pressure of the lubrication oil supplied from the oil path to the pressure reduction groove, at an upper end surface of the lower end plate, a groove extending in the circumferential direction and forming an elastic bearing on the inner circumferential side, the groove being formed at periphery of a hole into which the drive shaft is inserted, and the pressure reduction groove being formed so as to overlap with the elastic bearing as seen in a plan view.