Clutchless variable-capacity type compressor
US6425741B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2000 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Jul 14, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0296
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable capacity type compressor has a swash plate which can incline with respect to the drive shaft. An angle decreasing spring urges the swash plate to decrease the inclination angle and a return spring urges the swash plate to increase the inclination angle from the minimum inclination angle beyond the limit angle. The minimum inclination angle is smaller than a limit angle at which the swash plate can be assuredly returned in the direction to increase the inclination angle by a reaction force of the discharge pressure, and the angle decreasing spring balances with the return spring at an angle greater than the limit angle. A minimum spring load (F0) of the return spring is greater than 20N. A maximum spring load (F100) of the angle decreasing spring is F100(N)=(180±30)−4×(VD−120).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.