Method to control electronic expansion valve
US9874381B2 · kind B2 · utility
0Cited by
18References
12Claims
0Family size
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Key dates
| Filing date | Sep 2, 2015 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | May 12, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A vapor compression refrigeration cycle system includes a compressor and an electronic expansion valve connected between first and second refrigerant ports of a compressor. An expansion valve controller is configured to control a flow of refrigerant through the expansion valve in response to a superheat temperature of the refrigerant. The controller is configured to execute a first control algorithm until a local maximum of the superheat temperature occurs, and then to execute a second control algorithm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.