| 摘要 |
<p>A scroll-type hermetic compressor is disclosed including within a hermetically sealed housing (12) a fixed scroll member (48), an orbiting scroll member (50), a main bearing frame member (52), and a crankshaft (32). An oil sump (36) is located in a discharge pressure chamber (110) in the housing. The crankshaft is journalled by bearings (72, 74, 86) in the frame member and the orbiting scroll member. A centrifugal oil pump (38) supplies lubricating oil from the sump to the bearings through an axial passageway (120, 122) in the crankshaft. A vent (142, 144, 146, 148) allows the pumped oil to return to the sump to reduce leakage of oil and refrigerant into regions (98) at suction pressure.</p> |
