Control of defrost in heat pump
US5797273A · kind A · utility
19Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1997 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Feb 14, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F11/41
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A defrost control for a heat pump system initiates a defrost of the outdoor coil when certain computed condition occur. The conditions include exceeding a limit as to the difference that may be permitted between the maximum indoor coil temperature occurring since the last defrosting of the outdoor coil and the current indoor coil temperature. The limit that may not be exceeded is computed as a function of the maximum indoor coil temperature occurring since the last defrosting of the outdoor coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.