JPS561877A - Vacuum thawing - Google Patents
Vacuum thawingInfo
- Publication number
- JPS561877A JPS561877A JP7688279A JP7688279A JPS561877A JP S561877 A JPS561877 A JP S561877A JP 7688279 A JP7688279 A JP 7688279A JP 7688279 A JP7688279 A JP 7688279A JP S561877 A JPS561877 A JP S561877A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- vacuum chamber
- water
- vacuum
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Freezing, Cooling And Drying Of Foods (AREA)
Abstract
PURPOSE: To make water not boil until the pressure of a vacuum chamber reaches a given reduced pressure and to make vacuum thawing with a vacuum pump having a small capacity, by reducing the pressure in the vacuum chamber wherein the temperature of the water put in the chamber is made not higher than the boiling point at the goal pressure of the vacuum chamber.
CONSTITUTION: The products 4 to be frozen are put in the vacuum chamber 2, the temperature of water to be added to the water tank 5 in the vacuum chamber 2 is made not higher than the boiling point at the goal reduced pressure of the vacuum chamber to reduce the pressure and to evolve steam, and the latent heat of the water condensed to the frozen products 4 is utilized to thaw the products 4. For example, when water or ice at 0°C is put in the water tank 5 in the vacuum chamber, steam will not evolve until the pressure in the chamber is reduced to 5 Torr, the goal reduced pressure, or lower, and the pressure of steam is smaller than that of conventional method so that the capacity of a vacuum pump can be made smaller to about one-third by comparison with that of conventional method.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7688279A JPS561877A (en) | 1979-06-20 | 1979-06-20 | Vacuum thawing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7688279A JPS561877A (en) | 1979-06-20 | 1979-06-20 | Vacuum thawing |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS561877A true JPS561877A (en) | 1981-01-10 |
Family
ID=13617999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7688279A Pending JPS561877A (en) | 1979-06-20 | 1979-06-20 | Vacuum thawing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS561877A (en) |
-
1979
- 1979-06-20 JP JP7688279A patent/JPS561877A/en active Pending
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