| 摘要 |
<p>This invention discloses a oil separating mechanism of a hermetically sealed scroll type compressor in which an inner chamber of a housing (10) is kept at discharge pressure. The compressor includes a drive shaft (13) supported by a plain bearing (14) in an inner block member (40). The drive shaft is operatively linked to an orbiting scroll (30) which orbits within a stationary scroll (20). A rotation preventing device (34) prevents rotation of the orbiting scroll. The drive shaft includes an axial bore (131) extending from an open end and terminating within the inner block member. A radial bore (132) is provided near the terminal end of the axial bore and leads to a discharge chamber (60) of the compressor. A helical groove (134) is formed in the exterior surface of the supported portion of the drive shaft. The helical groove is linked to the axial bore through a radial hole (133) formed through the supported portion of the drive shaft. A large part of mists of lubricating oil are separated from refrigerant gas atmosphere by sticking on a portion of the exterior surface of the drive shaft where the radial bores exists by collision of discharged refrigerant gas therewith.</p> |
