Capacity control valve
US8021124B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 23, 2006 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | Sep 29, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86622
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A capacity control valve includes a valve body having a first valve portion for opening/closing a discharge-side path and a second valve portion for opening/closing a suction-side path, a pressure sensitive body arranged in a third valve chamber in the middle of the suction-side path, a valve seat body provided at the pressure sensitive body, and a third valve portion connected to the valve body for opening/closing the suction-side path by engagement and disengagement with the valve seat body. One of an engagement face of the third valve portion and a seat face of the valve seat body is formed into a spherical shape with a radius of curvature R satisfying 9 mm<R<11 mm and the other of the engagement face of the third valve portion and the seat face of the valve seat body is formed into a tapered surface shape having a center angle α satisfying 120°<α<160°. As such, a liquid refrigerant or the like accumulating in the control chamber can be discharged efficiently, and predetermined capacity control can be carried out rapidly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.