Channel-switching valve and method of controlling the same, and refrigerating cycle and method of controlling the same
US6244298A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2000 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Apr 4, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86839
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A channel-switching valve is provided. The channel-switching valve comprises: a cylindrical valve housing whose one end is closed by a main valve seat; a low pressure outlet and two connecting holes for connecting the inside and the outside of the valve housing; a high pressure inlet for connecting the inside and the outside of the valve housing; and a connecting groove and a guide groove formed on an end surface of a main vale element which is accommodated in the valve housing. When the main valve element is situated in a first rotation position, one of the connecting holes is connected to the low pressure outlet by the connecting groove while the other one of the connecting holes is connected to the high pressure inlet. When the main valve element is situated in a second rotation position, the other one of the connecting holes is connected to the low pressure outlet by the connecting groove while the one of the connecting holes is connected to the high pressure inlet by the guide groove. Both end surfaces of the main valve element are externally connected by an equalizer channel formed inside the valve housing. When the main valve element is rotated between the first rotation pos…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.