Cycle reversing valve for use in heat pumps
US6289931A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2000 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Jan 19, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86839
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A four port reversing valve for a reversible-cycle refrigeration system having a compressor is constructed with the reversing valve having a first inlet port adapted to be connected to the compressor and second, third, and fourth ports. The four port reversing valve is further provided with a rotatable valve member operable between first and second positions. The valve member in its first position connects the first inlet port with the second port and the third port with the fourth port, and the valve member in its second position connects the first inlet port with the fourth port, and the second port with the third ports. The second and third ports and the third and fourth ports are arranged so that the angle between the ports is greater than about 90.degree.. The third port is preferably oriented at an angle of about 120.degree. with respect to the second and fourth ports, but the third port may also be oriented at an angle of about 135.degree. with respect to the second and fourth ports. The four port reversing valve further comprises a rotating drive mechanism with the valve member magnetically coupled to the rotating drive mechanism. Alternatively, a linked rotary solenoid or …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.