Method of improved control for variable volume ratio valve
US11725661B2 · kind B2 · utility
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4References
11Claims
0Family size
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Key dates
| Filing date | Nov 23, 2020 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Nov 23, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Variable volume ratio compressors may be controlled using a switching parameter based on compressor speed and suction density to improve the matching of compressor volume ratio to desired discharge conditions. Delay periods may be implemented in the determination of when to change volume ratio to control the frequency of changes to the volume ratio. The switching parameter may be a product of the compressor speed and suction density. The volume ratio of the compressor may be controlled by switching valves directing pressure to a piston of a variable volume ratio system of the compressor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.