| 摘要 |
<p>In a high side, vertical, twin cylinder rolling piston hermetic compressor (10), a portion of the high pressure gas is diverted (34) from the chamber (31) defined by the lower muffler (30) and the pump bearing (26) to the axial bore (16-5) of the crankshaft (16). The crankshaft extends into the oil sump (36) such that rotation of the shaft produces a pumping action for pumping oil from the sump to structure requiring lubrication. Additionally, the flow diverted from the chamber to the axial bore produces a jet pump effect which supplements the pumping action produced by the rotating shaft, particularly at low speed.</p> |
