Cryogenic freezing system
US4317665A · kind A · utility
13Cited by
7References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1980 |
| Grant date | Mar 2, 1982 |
| Priority date | — |
| Expiry date | Dec 22, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/313
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The operation of a prior art freezer installation for freezing food can be improved by: PA0 (1) providing air curtains at the doors of the freezer; PA0 (2) using a pulse bag filter for separating ice from the air leaving the freezer; and PA0 (3) ensuring that the air leaving the freezer is colder than -80.degree. F.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.