Cryogenic refrigerator having a convection system to cool a hermetic compressor
US4831828A · kind A · utility
12Cited by
14References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1987 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | May 27, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B9/14
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
In accordance with the invention, a hermetic refrigerant compressor pump which is used to compress helium is cooled by fins which are press fitted to the compressor's housing. The compressor is further cooled by a heat exchanger which cools oil in an oil sump located within the compressor housing. Preferably, a fan is located between the fins and the heat exchanger to help cool the pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.