Monitor for refrigeration system
US4890459A · kind A · utility
15Cited by
10References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1988 |
| Grant date | Jan 2, 1990 |
| Priority date | — |
| Expiry date | Dec 8, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2500/222
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A monitor for detecting air leaks during the operation of a closed vapor compression refrigeration system having a refrigerant compressor driven by a prime mover. An oxygen sensor is disposed in the discharge manifold of the compressor, and the electrical output of the sensor is compared with a reference voltage by a comparator. When an air leak is detected by the comparator, refrigerant control responsive to such detection provides an alarm and/or shuts down the refrigeration system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.