Control unit for activating compressor
US5253481A · kind A · utility
9Cited by
4References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 27, 1992 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Aug 27, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2270/80
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The compressor activation control unit a rotation detecting means for detecting whether or not the motor is normally activated when the compressor is activated, a judging means for judging that the compressor interior is filled with a liquid refrigerant when the motor is not judged to be in the normal activating condition by the rotation detecting means, and a control means for step-driving the motor at a very slow-speed no more then one rotation per second through the driving circuit when the motor interior is judged to have been filled with the liquid refrigerant by the judging means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.