Scroll compressor with motor protector in non-orbiting scroll and flow enhancement
US6491500B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2000 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Oct 31, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C18/0215
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A scroll compressor is provided with a motor protector mounted at a location remote from the motor. The motor protector is of the sort which operates to stop operation of the motor both when the temperatures in the scroll compressor increases, and when the electrical characteristics of the power supplied to the motor depart from those from which are expected. Preferably, the motor protector is mounted in the non-orbiting scroll. Further, the invention includes means to increase the sensitivity of this motor protector to conditions indicative of an outdoor fan failure. In several embodiments, these means include a valve which opens to communicate hot discharge pressure refrigerant over the valve. In one other embodiment, this means is a heat sink operable to take heat away from the motor protector. In this last embodiment, when the volume flow of refrigerant decreases, the amount of heat taken away also decreases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.