Adaptive defrost control and method
US4680940A · kind A · utility
65Cited by
6References
3Claims
0Family size
Inventor
Key dates
| Filing date | Jun 20, 1979 |
| Grant date | Jul 21, 1987 |
| Priority date | — |
| Expiry date | Jun 20, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D21/006
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Apparatus and a method for determining the appropriate time-to-initiate a defrost cycle in conjunction with a refrigeration circuit having a heat exchanger upon which frost may accumulate. The elapsed time period from a previous defrost cycle is used to adjust the time between defrost cycles such that the time period between defrost cycles is varied as a funtion of the length of the previous defrost cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.