Electronic expansion valve
US12140354B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 2020 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | May 23, 2041 |
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 needle lead screw assembly, the valve needle lead screw assembly including a gasket portion, a spring and a lead screw assembly; the lead screw assembly includes a lead screw, the spring is sleeved outside the lead screw; the lead screw assembly includes a lower stop portion and an upper stop portion, the lower stop portion includes a lower flange portion or a main body portion, and the lower stop portion or the main body portion (1562) can abut against the gasket portion. The upper stop portion includes an upper flange portion and/or an upper stop ring, and the upper flange portion and/or the upper stop ring abut against the spring; a lower end of the spring abuts against the gasket portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.