Normal direction heater for compressor crankcase heat
US5252036A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1990 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | Jun 19, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B39/0207
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention is a crankcase heater for preventing the migration of liquid refrigerant. The heater is located on the compressor housing surface near the oil sump. The heater is positioned within a fence of a terminal assembly, covering substantially all the surface area enclosed by the fence except for the terminal cluster itself. The heater provides heat to the housing and the interior of the compressor, and the gasket insulates the heater and interiorly reflects the heat produced. Liquid refrigerant in the oil sump is boiled off to increase the pressure inside the housing and inhibit migration of refrigerant from the evaporator or accumulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.