Method to control electronic expansion valve
US9151526B2 · kind B2 · utility
2Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2011 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Jul 24, 2033 |
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.