Defrost control for heat pump
US5727395A · kind A · utility
21Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1997 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Feb 14, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B13/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A defrost control for a heat pump system initiates a defrost when certain computed conditions are exceeded. The conditions include a limit as to the difference that may be permitted between the maximum temperature difference of two measured temperatures and the current difference of these measured temperatures. The two measured temperatures are the temperature of the indoor coil of the heat pump and the indoor air temperature of the air being heated by the indoor coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.