Electronic expansion valve, and air conditioner
US9513040B2 · kind B2 · utility
2Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2012 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Aug 21, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electronic expansion valve includes a valve body, a valve seat, and a stepping motor. A valve portion is formed at a forward end of the valve body. The valve seat forms a variable throttle portion between the valve portion and the valve seat by allowing the valve body to move in an axial direction. The stepping motor moves the valve portion in accordance with a pulse number. At least one part of a side surface of the valve portion is shaped so that an opening degree ratio becomes constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.