Apparatus for heat pump malfunction detection
US4262736A · kind A · utility
50Cited by
3References
9Claims
0Family size
Inventors
Key dates
| Filing date | Oct 18, 1979 |
| Grant date | Apr 21, 1981 |
| Priority date | — |
| Expiry date | Oct 18, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S165/002
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A malfunction detection apparatus is provided for a heat pump system incorporating auxiliary resistance heaters, for detecting when the heat pump has lost efficiency, due to less than a catastrophic failure, and is therefore energizing the resistance heaters when they would not normally be energized, whereby a signal may be provided, such as a warning light, for announcing when the resistance heater has been energized while the outside temperature is above the system balance point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.