DK200601001A - Apparatus and method for cooling products in a fluidized bed - Google Patents

Apparatus and method for cooling products in a fluidized bed Download PDF

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Publication number
DK200601001A
DK200601001A DK200601001A DKPA200601001A DK200601001A DK 200601001 A DK200601001 A DK 200601001A DK 200601001 A DK200601001 A DK 200601001A DK PA200601001 A DKPA200601001 A DK PA200601001A DK 200601001 A DK200601001 A DK 200601001A
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DK
Denmark
Prior art keywords
air
trough
fluidization
freezing
zone
Prior art date
Application number
DK200601001A
Other languages
Danish (da)
Inventor
Pancer Branko
Fajerson Joakim
Original Assignee
Frigoscandia Equipment Ab
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 Frigoscandia Equipment Ab filed Critical Frigoscandia Equipment Ab
Publication of DK200601001A publication Critical patent/DK200601001A/en
Application granted granted Critical
Publication of DK178194B1 publication Critical patent/DK178194B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D13/00—Stationary devices, e.g. cold-rooms
    • F25D13/06—Stationary devices, e.g. cold-rooms with conveyors carrying articles to be cooled through the cooling space
    • F25D13/067—Stationary devices, e.g. cold-rooms with conveyors carrying articles to be cooled through the cooling space with circulation of gaseous cooling fluid
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B4/00—General methods for preserving meat, sausages, fish or fish products
    • A23B4/06—Freezing; Subsequent thawing; Cooling
    • A23B4/062—Freezing; Subsequent thawing; Cooling the materials being transported through or in the apparatus with or without shaping, e.g. in the form of powder, granules or flakes
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B7/00—Preservation or chemical ripening of fruit or vegetables
    • A23B7/04—Freezing; Subsequent thawing; Cooling
    • A23B7/0408—Freezing; Subsequent thawing; Cooling the material being transported through or in the apparatus with or without shaping, e.g. in the form of powder, granules or flakes
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/36—Freezing; Subsequent thawing; Cooling
    • A23L3/361—Freezing; Subsequent thawing; Cooling the materials being transported through or in the apparatus, with or without shaping, e.g. in form of powder, granules, or flakes

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Food Science & Technology (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Nutrition Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Freezing, Cooling And Drying Of Foods (AREA)

Description

Patentkrav : 1. Apparat (1) til frysning af produkter i et flui-diseret leje og omfattende et luftpermeabelt transportbånd (6, 61), der over en del af sin længde danner en bundflade (4) af et trug (2, 21), som er tilpasset til at optage de produkter, der skal fryses, og et luftledende organ (10', 10''), som er indrettet over den nævnte del af transportbåndet (6, 61), til at rette en strømning af luft (F' , F'1), som tilføres gennem truget (2, 21), via bundfladen (4), hvilket luftledende organ (10', 1011) er indrettet til at lede strømningen af luft (F', F''), så at et leje, der er dannet af produkterne i truget (2, 21), udsættes for en første fluidisering i en forkølingszone (A', A1') af truget (2, 21) og en anden fluidisering i en frysningszone (B1, B11) af truget (2, 21) nedstrøms for forkølingszonen (A', A'1), kendetegnet ved at det luftledende organ (10', 10'1) omfatter en droslet første del, som er indrettet i forbindelse med forkølingszonen (A1, A''), og en droslet anden del, som er indrettet i forbindelse med frysningszonen (B', B''), hvilken anden del har en mindre drosling (12', 12'') end den droslede første del, og at den anden fluidisering er kraftigere end den første og så kraftig, at sammenfrysning af op til hinanden stødende produkter modvirkes. 2. Apparat ifølge krav 1, i hvilket det luftledende organ (10', 10'') omfatter en ikke-droslet anden del, der er indrettet i forbindelse med frysningszonen (B1, B''). 3. Apparat ifølge krav 1 eller 2, i hvilket det luftledende organ (10', 10'') er indrettet i ét stykke. 4. Apparat ifølge krav 1 eller 2, i hvilket det luftledende organ (10', 10'') er opdelt i segmenter i en retning på tværs af transportbåndets (6, 61) fremførings- retning (P), hvilke segmenter har forskellige grader af drosling (12', 12''). 5. Apparat ifølge ét hvilket som helst af kravene l-4, i hvilket truget (2, 21) har en dybfrysningszone (C, C 1 ' ) . 6. Apparat ifølge krav 1 eller 2, i hvilket det luftledende organ (10') omfatter en droslet tredje del, der er indrettet i forbindelse med dybfrysningszonen (C), hvilken tredje del har en større drosling (12') end den anden del. 7. Apparat ifølge et hvilket som helst af kravene 1-6, i hvilket strømningen af luft (F', F'') i forkølingszonen (A', A'') har en hastighed på 2-4 m/s. 8. Apparat ifølge et hvilket som helst af kravene 1-6, i hvilket strømningen af luft (F', F'') i frysningszonen {B', B1'') har en hastighed på 5-7 m/s. 9. Apparat ifølge krav 5, i hvilket strømningen af luft (F1, F'') i dybfrysningszonen (C, C'') har en hastighed på 2-4 m/s. 10. Apparat ifølge et hvilket som helst af kravene 1-9, i hvilket det luftpermeable transportbånd (6, 61) er endeløst. 11. Apparat ifølge et hvilket som helst af kravene 1-9 og omfattende et andet luftpermeabelt transportbånd (62), der langs en del af sin længde danner en bundflade (4) af et andet trug (22), som er tilpasset til at optage og dybfryse de produkter, der er frosset i del første trug (2, 21). 12. Apparat ifølge krav 11, i hvilket det første trug (2, 21) er optaget i et første rum (3, 31), og det andet trug (22) er indrettet i et andet rum (32), som efterfølger det første rum. 13. Fremgangsmåde til frysning af produkter i et fluidiseret leje og omfattende fluidisering af et leje af produkter, der er indeholdt i et trug (2, 21), så at lejet udsættes for en første fluidisering i en forkølingszone (8, 8') af truget (2, 21) og en anden fluidisering, der er kraftigere end den første fiuidisering, i en frysningszone {B1, B'') i truget (2, 21), hvilken første og hvilken anden fiuidisering hver især tilvejebringes ved, at truget (2, 21) bliver forsynet med en kraftigere strømning af luft (F', F'') i frysningszonen (B', B' ' ) end i forkølingszonen (A', A'' ) , hvilken strømning af luft (F', F11) styres ved hjælp af et luftledende organ (10', 10''), der er forsynet med droslinger (12', 12''), hvilket luftledende organ har en større drosling (12', 12'') i forkølingszonen (A1, A'1) end i frysningszonen (B', B1'), hvilken anden fiuidisering gives en sådan udstrækning, at sammenfrysning af op til hinanden stødende produkter modvirkes. 14. Fremgangsmåde ifølge krav 13 og omfattende det træk, at fluidiseringen foregår på en sådan måde, at lejet udsættes for en tredje fiuidisering i en dybfrysningszone (C, C1), hvilken tredje fiuidisering er mindre kraftig end den anden fiuidisering. 15. Fremgangsmåde ifølge krav 14, ved hvilken dybfrysningszonen (C, C') er indrettet i et andet trug (22) . 16. Fremgangsmåde ifølge krav 15, ved hvilken det første trug (21) er indrettet i et første rum (31), og det andet trug (22) er indrettet i et andet rum (32), der efterfølger det første rum. 17. Fremgangsmåde ifølge et hvilket som helst af kravene 13-16, ved hvilken lejet under sin fiuidisering transporteres gennem de respektive trug (2, 21, 22) båret på et bunddannende, luftpermeabelt transportbånd (6, 61, 62), der er indrettet deri.Patent claim: An apparatus (1) for freezing products in a fluidized bed and comprising an air-permeable conveyor belt (6, 61) forming a portion (4) of a trough (2, 21) over a portion of its length. adapted to accommodate the products to be frozen and an air-conducting means (10 ', 10' ') arranged over said portion of the conveyor belt (6, 61) to direct a flow of air ( F ', F'1), which is supplied through the trough (2, 21), via the bottom surface (4), which air-conducting means (10', 1011) is arranged to direct the flow of air (F ', F' '), so that a bed formed by the products in the trough (2, 21) is subjected to a first fluidization in a cold zone (A ', A1') of the trough (2, 21) and a second fluidization in a freezing zone (B1, B11) of the trough (2, 21) downstream of the cold zone (A ', A'1), characterized in that the air-conducting means (10', 10'1) comprises a sprung first portion arranged in connection with the cold zone (A1 , A '), and a sprinkled a second portion arranged in connection with the freezing zone (B ', B' '), said second portion having a smaller throttle (12', 12 '') than said throttled first portion, and said second fluidization being more powerful than said first and so powerful that the freezing of adjacent products is counteracted. Apparatus according to claim 1, in which the air-conducting means (10 ', 10' ') comprises a non-sprayed second part arranged in connection with the freezing zone (B1, B' '). Apparatus according to claim 1 or 2, in which the air-conducting means (10 ', 10' ') is arranged in one piece. Apparatus according to claim 1 or 2, in which the air-conducting means (10 ', 10' ') is divided into segments in a direction transverse to the conveying direction (P) of the conveyor belt (6, 61), which segments have different degrees. of thrush (12 ', 12' '). Apparatus according to any one of claims 1-4, in which the trough (2, 21) has a freezing zone (C, C 1 '). Apparatus according to claim 1 or 2, wherein the air-conducting means (10 ') comprises a throttled third part arranged in connection with the freezing zone (C), which third part has a greater throttle (12') than the second part. . Apparatus according to any one of claims 1-6, in which the flow of air (F ', F' ') in the cold zone (A', A '') has a velocity of 2-4 m / s. Apparatus according to any one of claims 1-6, in which the flow of air (F ', F' ') in the freezing zone {B', B1 '') has a velocity of 5-7 m / s. Apparatus according to claim 5, in which the flow of air (F1, F '') in the freezing zone (C, C '') has a velocity of 2-4 m / s. Apparatus according to any one of claims 1-9, in which the air-permeable conveyor belt (6, 61) is endless. Apparatus according to any one of claims 1-9 and comprising a second air-permeable conveyor belt (62) forming along a portion of its length a bottom surface (4) of another trough (22) adapted to receive and deep-freeze the products frozen in the first trough (2, 21). Apparatus according to claim 11, in which the first trough (2, 21) is accommodated in a first compartment (3, 31) and the second trough (22) is arranged in a second compartment (32) which follows the first compartment (32). room. A method of freezing products in a fluidized bed and comprising fluidizing a bed of products contained in a trough (2, 21) so that the bed is subjected to a first fluidization in a cold zone (8, 8 ') by the trough (2, 21) and a second fluidization, which is more powerful than the first fluidization, in a freezing zone (B1, B '') of the trough (2, 21), each first and second fluidization being each provided by the trough (2, 21) is provided with a stronger flow of air (F ', F' ') in the freezing zone (B', B '') than in the cold zone (A ', A' '), which flow of air (F' , F11) is controlled by an air-conducting means (10 ', 10' ') provided with throttles (12', 12 ''), which air-conducting means has a larger throttle (12 ', 12' ') in the cold zone (A1, A'1) than in the freezing zone (B ', B1'), which other fluidization is given to such an extent as to prevent freezing of adjacent products. The method of claim 13, comprising the feature that the fluidization takes place in such a way that the bed is subjected to a third fluidization in a deep freezing zone (C, C1), which third fluidization is less powerful than the second fluidization. The method of claim 14, wherein the freezing zone (C, C ') is arranged in a second trough (22). The method of claim 15, wherein the first trough (21) is arranged in a first compartment (31) and the second trough (22) is arranged in a second compartment (32) following the first compartment. A method according to any of claims 13-16, wherein the bed during its fluidisation is conveyed through the respective troughs (2, 21, 22) carried on a bottom-forming, air-permeable conveyor belt (6, 61, 62) arranged therein.

DK200601001A 2004-01-30 2006-07-20 Apparatus and method for cooling products in a fluidized bed DK178194B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE0400167 2004-01-30
SE0400167A SE527465C2 (en) 2004-01-30 2004-01-30 Device and method for freezing products in a fluidized bed
PCT/SE2005/000079 WO2005073649A1 (en) 2004-01-30 2005-01-26 Apparatus and method for refrigerating products in a fluidised bed
SE2005000079 2005-01-26

Publications (2)

Publication Number Publication Date
DK200601001A true DK200601001A (en) 2006-07-20
DK178194B1 DK178194B1 (en) 2015-08-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
DK200601001A DK178194B1 (en) 2004-01-30 2006-07-20 Apparatus and method for cooling products in a fluidized bed

Country Status (4)

Country Link
DK (1) DK178194B1 (en)
SE (1) SE527465C2 (en)
TR (1) TR200603896T1 (en)
WO (1) WO2005073649A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006126870A1 (en) * 2005-05-26 2006-11-30 Gti Koudetechniek B.V. Apparatus and method for processing food products, drying and/or cooling unit and processed food product
CA2736843C (en) * 2011-04-12 2019-03-26 Fps Food Process Solutions Corporation Apparatus and method for fluidized bed treatment of materials
US9644883B2 (en) * 2012-10-04 2017-05-09 GEA Refrigeration Canada, Inc Fluidized bed conveyor belt freezer system
EP2946676B1 (en) 2014-05-22 2017-09-06 John Bean Technologies AB Apparatus for and method of temperature treatment of a product

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2223972A (en) * 1939-02-11 1940-12-03 Henry W Sterling Method and apparatus for freezing comestibles
US2402921A (en) * 1942-08-18 1946-06-25 Sharpe Norman Apparatus for freezing comestibles
DE1952056U (en) * 1960-11-07 1966-12-22 Frigoscandia Ab COOLING DEVICE.
GB1042080A (en) * 1963-12-18 1966-09-07 Frigoscandia Ab Improvements in or relating to methods of freezing solid particles and installationstherefor
US3982404A (en) * 1974-11-04 1976-09-28 Lewis Refrigeration Co. Individual quick-freezing of moist articles using deep fluidized bed and input conditioner
PL209192A1 (en) * 1978-08-22 1980-03-24 Os Bad Rozwojowy Przem Budowy
US4281521A (en) * 1979-12-05 1981-08-04 Refrigeration Engineering Corporation Fluidized freezing

Also Published As

Publication number Publication date
TR200603896T1 (en) 2006-12-21
SE527465C2 (en) 2006-03-14
SE0400167L (en) 2005-07-31
DK178194B1 (en) 2015-08-03
SE0400167D0 (en) 2004-01-30
WO2005073649A1 (en) 2005-08-11

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Effective date: 20230126