Sensing refrigerant temperature in a thermostatic expansion valve
US4984735A · kind A · utility
21Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1990 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | Mar 19, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2341/0683
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A mechanical refrigerant thermal expansion valve has a sensing port sealed with a cupped shape closure received therein and sealed about the cup rim. A cover assembly is removeably attached to the valve over the cup with a thermistor extending into the cup which is filled with thermally conductive grease for thermal conductivity between the cup and the thermistor. The cover assembly has an electrical connector provided thereon. The thermistor is preferably mounted on printed circuit board potted in the cover which may include electronic signal logic and power switching circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.