Quick freezing apparatus and quick freezing method
US7810340B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2005 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Apr 11, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2700/122
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
To provide a quick freezing apparatus and method making it possible to prevent a subtle reaction between an object-to-be-preserved and a gas inside its freezing store to prevent deformation and deterioration of the object-to-be-preserved as much as possible and freeze-preserve the object maintaining its freshness and quality at a high standard for a long term, and thereby applicable to a long-term preservation of a living tissue.A quick freezing apparatus includes a freezing store 11 including a door for bringing in or taking out an object-to-be-frozen 3, a freezer 17 capable of lowering a temperature inside the freezing store to a temperature equal to or less than approximately −30 degrees C., a pressure regulator 60 capable of adjusting a gas pressure inside the freezing store, and a ventilator 31 for sending cold air at a wind velocity of 1 to 5 m/sec toward the object-to-be-frozen placed inside the freezing store. The pressure regulator 60 includes an actuation controller 68 for detecting the temperature inside the freezing store; if the detected inside temperature is equal to or more than a predetermined value, then actuating a depressurizer 62 to decrease the inside gas press…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.