JPS561877A - Vacuum thawing - Google Patents

Vacuum thawing

Info

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
Application number
JP7688279A
Other languages
Japanese (ja)
Inventor
Minoru Suzuki
Tatsu Hirotsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Plant Technologies Ltd
Original Assignee
Hitachi Plant Technologies Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Plant Technologies Ltd filed Critical Hitachi Plant Technologies Ltd
Priority to JP7688279A priority Critical patent/JPS561877A/en
Publication of JPS561877A publication Critical patent/JPS561877A/en
Pending legal-status Critical Current

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
JP7688279A 1979-06-20 1979-06-20 Vacuum thawing Pending JPS561877A (en)

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)

Similar Documents

Publication Publication Date Title
ATE44817T1 (en) HEAT PUMP.
JPS561877A (en) Vacuum thawing
JPS54130769A (en) Hydraulic circuit
JPS5592678A (en) Rapid cooling of high-temperature wet food and its device
JPS5598607A (en) Energy producing plant utilizing latent heat of ice
JPS5632017A (en) Cold heat energy utilizing system
JPS56121473A (en) Preparation of restorable dried food and feed
JPS5758869A (en) Preparation of frozen potato containing alpha-starch
JPS5550849A (en) Production of packed food that is distributed at normal temperature
JPS532751A (en) Integral type multi-stage evaporator absorptor
JPS55850A (en) Cooling and heating apparatus
JPS56134958A (en) Preparation of frozen potato
JPS5554885A (en) Vacuum thawing device
JPS557951A (en) No-pollution heat engine to drive turbing by solar heat
JPS5747164A (en) Solar heat collecting system
JPS57105151A (en) Preparation of loosely frozen cooked rice
JPS5411876A (en) Sluding freezing device
JPS55108266A (en) Vermicelli such as macaroni
JPS55148987A (en) Closed compressor
JPS5635947A (en) Completely heated and preserved conger eel (anago)
JPS53119449A (en) Defrosting controller
JPS55111749A (en) Preparation of instant "memma"
JPS5542502A (en) Vacuum thawing device
JPS5554100A (en) Sludge treatment apparatus
JPS5551402A (en) Apparatus for distillation, dehydration and concentration