Control arrangement for a refrigeration apparatus
US5131237A · kind A · utility
98Cited by
1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1991 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | Feb 25, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2700/1933
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A refrigeration system having compressor controls responsive to the heat load on the system. Each selected evaporator of the system has a thermostatic switch unit which includes an associated temperature sensor in proximity to the evaporator. The thermostatic switch unit has an operating range with ON and OFF threshold values and function to operate an electromagnetic valve which controls the refrigerant admitted to the evaporator. The heat load to which the compressor controls are responsive is derived from the accumulated ON and OFF times of the switch insert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.