Highly-efficient freezing apparatus and highly-efficient freezing method
US7237400B2 · kind B2 · utility
25Cited by
12References
35Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2002 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Jan 22, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2400/30
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
An object accommodated in an internal space of a freezer is quickly cooled to a predetermined temperature with preventing water from freezing while an oscillating electric field of, preferably, a variable frequency in the range of 50 Hz to 5 MHz and/or a magnetic field are applied to the object, or further ionic air is added to clod air, and subsequently the object is instantaneously frozen at the predetermined temperature. Preferably, the magnetic field is a static magnetic field and/or a variable magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.