Refrigeration compressor that maintains a satisfactory oil level
US9217589B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2012 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Feb 6, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B31/004
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The refrigeration compressor according to the invention comprises a sealed enclosure containing a compression stage (7) and provide with a refrigerant inlet and outlet (6, 18), the compressor being configured such that under usage conditions, a flow of refrigerant circulates through the refrigerant inlet, the compression stage, and the refrigerant outlet. The compressor has an oil pan (24) and oil recirculation means arranged to orient the oil contained in the oil pan into the flow of refrigerant when the oil in the oil pan exceeds a predetermined oil level (34). The recirculation means include a recirculation line (35) housed in the sealed enclosure and comprising an inlet port (36) situated at a height substantially corresponding to the predetermined oil level, an outlet port (37) emerging in the refrigerant flow, and an intermediate part (38) connecting the inlet and outlet ports. The intermediate part (38) includes a first portion (38a) extending below the predetermined oil level (34).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.