Four way reversing valve
US4255939A · kind A · utility
13Cited by
8References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 21, 1979 |
| Grant date | Mar 17, 1981 |
| Priority date | — |
| Expiry date | May 21, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86726
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A four way reversing valve utilized in the refrigerant flow system of a heat pump or the like for selectively directing the flow of high pressure refrigerant either to the inside or outside heat exchange coil of the heat pump thereby to selectively either effect heating or cooling of the space in which the inside coil is located. The valve has an improved slide valve design which significantly lessens flow losses through the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.