Bulbless thermostatic expansion valve and method of joining insulated power element
US12270582B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2023 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Sep 29, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2500/15
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A bulbless thermostatic expansion valve has enhanced joining of the power element to the valve body. The valve body includes an upper extension that extends from a main body portion, an end of the upper extension being crimped into a lip relative to an opposing surface of the main body portion thereby defining a recess that receives a portion of the housing of the power element to the join the power element to the valve body. The lip may be formed by roll forming the end of upper extension of the valve body. The housing of the power element may be a multipart housing including an upper housing and a lower housing, with a diaphragm being secured between the upper housing and the lower housing, and an end of the lower housing is the portion of the housing of the power element that is received within the recess.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.