Mechanism for prevention of burning of bearing portions in a hermetic type scroll compressor
US4889471A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1988 |
| Grant date | Dec 26, 1989 |
| Priority date | — |
| Expiry date | Jul 7, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05B2270/303
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a scroll compressor, an open end of an oil extraction pipe which is placed in oil stored in a bottom portion of a hermetic casing is positioned at a location higher than an open end of an oil suction pipe that opens in the same stored oil, and a thermostat is provided for sensing a temperature rise of a compressed gas to cause the compressor to be stopped. Accordingly, even when an amount of oil injected into the compressed gas decreases, an amount of oil necessary for lubrication of a bearing portion is assured. The provision of the thermostat enables the compressor to be stopped before an amount of supply of the lubrication oil to the bearing portion has decreased. It is, accordingly, possible to positively prevent burning of the bearing portion of a crankshaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.