Oil control for climate-control system
US11460224B2 · kind B2 · utility
0Cited by
10References
54Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2019 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Oct 30, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2600/2519
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Systems and methods for purging lubricant from a first compressor to a second compressor are provided. A control module receives a lubricant purge command, shuts the second compressor to an OFF-mode while the first compressor remains in the ON-mode, restricts working fluid from an outlet of the second compressor from flowing into the first compressor and allows compressed working fluid discharged from an outlet of the first compressor to flow into the inlet of the second compressor such that lubricant in the second compressor flows into the first compressor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.