Electronic expansion valve
US9890869B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 2013 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Sep 24, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/53
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electronic expansion valve is provided, a valve rod of which is provided with an axial through-hole in communication with a valve port, and a lateral wall of the axial through-hole of the valve seat is sealed with respect to the valve rod. An end surface of the valve rod includes a sealing surface in sealing contact with an end surface at the valve port, the sealing surface includes a first sealing surface to bear an action force of refrigerant at one connecting port and a second sealing surface to bear an action force of refrigerant at another connecting port, and the effective pressure-bearing area of the first sealing surface is equal to that of the second sealing surface. Further provided is an electronic expansion valve in line contact seal with the valve seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.