Electronic expansion valve
US8651456B2 · kind B2 · utility
7Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2010 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Apr 11, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The present invention provides an electronic expansion valve, comprising a leading screw, a valve needle and a valve needle sleeve. It further comprises: a washer provided in an annular groove, which is provided at the lower end of the leading screw in the circumferential direction, and a thickness of the washer is less than a width of the annular groove; the valve needle sleeve abuts against the upper surface of the washer and is fixedly connected with the valve needle; and a spring is provided between the washer and the valve needle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.