Cryogenic freezer control
US5054292A · kind A · utility
15Cited by
10References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1990 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Jul 13, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D29/001
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Method and apparatus for controlling the cooldown and steady-state operation of a tunnel type cryogenic freezer by providing auxiliary cryogen to one or more gas recirculating zones of the freezer and controlling the supply of the auxiliary cryogen by sensing the temperature of the gas recirculating zone and comparing the temperature to a pre-set level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.