Thermal expansion valve
US5642858A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1996 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | Mar 21, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2341/0683
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
According to the present invention, a thermal expansion valve for a refrigerating cycle includes a housing having a throttle passage therein for expanding the refrigerant thereinto from the high-pressure side liquid refrigerant circuit, a valve element provided within the housing for adjusting opening degree of the throttle passage, and a thermosensitive element movably disposed within the housing. The thermosensitive element includes a case and a pressure responding member disposed within the case and displacing according to temperature and pressure of the refrigerant at the exit of an evaporator. The case of the thermosensitive element is integrally connected to the valve element, and the thermosensitive element and the valve element are so constructed as to integrally move according to the displacement of the pressure responding member. Accordingly, even if the valve element vibrates due to the sharp expansion of the refrigerant and the vibration transmits to the thermosensitive element case, as the thermosensitive element case is movable with respect to the housing and the housing are separated from the thermosensitive case, most of the vibration is prevented from being transmi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.