Air cooled centrifugal refrigeration machine with provision to prevent evaporator freezing
US4081971A · kind A · utility
11Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1976 |
| Grant date | Apr 4, 1978 |
| Priority date | — |
| Expiry date | Sep 17, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B49/02
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air cooled centrifugal refrigeration machine is shown having an automatic shut-off valve in the liquid line to prevent natural circulation of refrigerant at low outdoor ambient temperatures that otherwise would cause freezing of the water in the evaporator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.