Control of scroll compressor at shutdown to prevent unpowered reverse rotation
US6042344A · kind A · utility
74Cited by
5References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1998 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Jul 13, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2270/72
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A unique method of operating a scroll compressor includes the steps of opening a capacity modulation unloader valve slightly before shutdown of the scroll compressor. By opening the unloader valve, the occurrence of unpowered reverse rotation is reduced or eliminated. Most preferably, the unloader valve communicates an economizer line to a suction inlet line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.