Defrosting system using actual defrosting time as a controlling parameter
US4251988A · kind A · utility
93Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1978 |
| Grant date | Feb 24, 1981 |
| Priority date | — |
| Expiry date | Dec 8, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2600/23
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An automatic defrost system in which the actual defrost time of an evaporator coil, for example, is the controlling parameter for establishing a defrost cycle. The system automatically adjusts itself so that a predetermined amount of frost builds up in the frost accumulating period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.