Refrigeration pull-down technique
US5295364A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 14, 1993 |
| Grant date | Mar 22, 1994 |
| Priority date | — |
| Expiry date | Jul 14, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/1935
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Apparatus for and method of rapidly bringing a controlled space to a desired temperature. The technique is particularly applicable to the maintenance of controlled temperature spaces for the transportation of perishable cargo, such as in refrigeration trucks. Immediately following completion of the loading process, it is desirable to bring the internal temperature of the controlled space to the proper operating point as quickly as possible to retard spoilage. However, it is necessary to avoid unacceptable overshoot to prevent damage to the cargo by freezing. The disclosed system employs multiple sensors and a control algorithm to permit pull down to occur as rapidly as possible without unacceptable overshoot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.