GB983498A - Improvements in or relating to vacuum freeze drying - Google Patents

Improvements in or relating to vacuum freeze drying

Info

Publication number
GB983498A
GB983498A GB1026962A GB1026962A GB983498A GB 983498 A GB983498 A GB 983498A GB 1026962 A GB1026962 A GB 1026962A GB 1026962 A GB1026962 A GB 1026962A GB 983498 A GB983498 A GB 983498A
Authority
GB
United Kingdom
Prior art keywords
food
ice
vacuum freeze
drying
heating
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.)
Expired
Application number
GB1026962A
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.)
Leybold Anlagen Holding AG
Original Assignee
Leybold Anlagen Holding AG
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 Leybold Anlagen Holding AG filed Critical Leybold Anlagen Holding AG
Publication of GB983498A publication Critical patent/GB983498A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F26B5/06—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Freezing, Cooling And Drying Of Foods (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

983,498. Freeze-drying food. LEYBOLDANLAGEN HOLDING A.G. March 16, 1962 [March 18, 1961], No. 10269/62. Heading A2D. [Also in Division F4] A method of heating food to be dried in a vacuum freeze-drying process comprises varying the application of heat supplied to the material in accordance with the progress of the drying process to promote application of the heating effect primarily to the ice-containing part of the food. In apparatus for vacuum freeze-drying material 9 in treating vessels 10 which are conveyed through a series of air-tight compartments 1 to 3 and gas locks 4, 5, the compartments comprise consecutively heating by thermal conduction and/or radiation from heaters 71 to affect only the external layers of the food which is frozen solid; by combined heaters 72 and high frequency apparatus 82 to penetrate deeper into the food; and finally by high frequency apparatus 83 alone to effect the remainder of the ice and any residual pockets of ice in the material.
GB1026962A 1961-03-18 1962-03-16 Improvements in or relating to vacuum freeze drying Expired GB983498A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL0038483 1961-03-18

Publications (1)

Publication Number Publication Date
GB983498A true GB983498A (en) 1965-02-17

Family

ID=7268293

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1026962A Expired GB983498A (en) 1961-03-18 1962-03-16 Improvements in or relating to vacuum freeze drying

Country Status (1)

Country Link
GB (1) GB983498A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103919263A (en) * 2014-04-10 2014-07-16 中国烟草总公司郑州烟草研究院 Method for judging freeze drying precooling temperatures of tobacco leaf samples by aid of eutectic crystal points and eutectic melting points
CN104154716A (en) * 2014-08-25 2014-11-19 济南康众医药科技开发有限公司 Application of freeze-drying technology in high-activity Gymnadenia conopsea preparation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103919263A (en) * 2014-04-10 2014-07-16 中国烟草总公司郑州烟草研究院 Method for judging freeze drying precooling temperatures of tobacco leaf samples by aid of eutectic crystal points and eutectic melting points
CN104154716A (en) * 2014-08-25 2014-11-19 济南康众医药科技开发有限公司 Application of freeze-drying technology in high-activity Gymnadenia conopsea preparation

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