Hermetic compressor

摘要

A compressor has a rotational driver in a hermetic container, a rotational shaft coupled to the rotation driver, and a compression mechanism coupled to the rotational shaft to inhale and compress refrigerant. In addition, a first bearing fixed to the compression mechanism supports the rotational shaft, and a second bearing is separated from the first bearing on the rotational shaft. The gap between the shaft and the first bearing is set to control a gap between the shaft and the second bearing.

主权项

1. A compressor, comprising:
a hermetic container; a rotation driver in the container; a rotational shaft coupled to the rotation driver; a compression mechanism, coupled to the shaft, to inhale and compress refrigerant; a first bearing to support the shaft; and a second bearing fixed to the container to support the shaft, wherein the first and second bearings are separated by a predetermined distance, wherein the following relation is satisfied to reduce friction loss between the second bearing and the shaft and to maintain bearing function between the second bearing and the shaft:
50 μm+d/1000 a frame adjacent to an inner circumferential surface of the container; a housing having at least one support protrusion detachably coupled to the frame and a bearing protrusion that protrudes toward the first bearing from the at least one support protrusion; and a bearing bush disposed at an inner portion of the bearing protrusion to face the shaft.