Compressor lubrication system with vent
US4875840A · kind A · utility
16Cited by
9References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1988 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | May 12, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C29/023
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A scroll-type hermetic compressor is disclosed including within a hermetically sealed housing a fixed scroll member, an orbiting scroll member, a main bearing frame member, and a crankshaft. An oil sump is located in a discharge pressure chamber in the housing. The crankshaft is journalled by bearings in the frame member and the orbiting scroll member. A centrifugal oil pump supplies lubricating oil from the sump to the bearings through an axial passageway in the crankshaft. A vent allows the pumped oil to return to the sump to reduce leakage of oil and refrigerant into regions at suction pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.