Bulbless thermal expansion valve
US11808498B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2023 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Apr 13, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2600/2513
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A bulbless expansion valve including a valve body, a valve member, a power element, and a thermal sensor including an enclosure operatively mounted to the valve body. The power element includes a diaphragm having a first side operatively coupled to the valve member, and a second side that together with the sensor enclosure forms at least part of a sensing chamber containing sensing fluid such that the sensing fluid is in communication with the second side of the diaphragm. The first side of the diaphragm may be fluidly coupled to an operating line, such as a suction line, to communicate temperature and pressure to the first side of the diaphragm, thereby providing heat transfer with the sensing fluid on the opposite side. Temperature changes of the sensing fluid results in pressure changes applied to the diaphragm causing movement of the valve member to control flow of the operating fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.