CN1257573A - Method and apparatus for surface freezing - Google Patents

Method and apparatus for surface freezing Download PDF

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Publication number
CN1257573A
CN1257573A CN 98805484 CN98805484A CN1257573A CN 1257573 A CN1257573 A CN 1257573A CN 98805484 CN98805484 CN 98805484 CN 98805484 A CN98805484 A CN 98805484A CN 1257573 A CN1257573 A CN 1257573A
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CN
China
Prior art keywords
pore
conveyer belt
food product
cold air
cover tape
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.)
Granted
Application number
CN 98805484
Other languages
Chinese (zh)
Other versions
CN1140754C (en
Inventor
容尼·马尔姆贝里
伦纳特·乌尔松
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.)
John Bean Technologies AB
Original Assignee
Frigoscandia Equipment AB
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Filing date
Publication date
Application filed by Frigoscandia Equipment AB filed Critical Frigoscandia Equipment AB
Publication of CN1257573A publication Critical patent/CN1257573A/en
Application granted granted Critical
Publication of CN1140754C publication Critical patent/CN1140754C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • 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
    • 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
    • A23L3/362—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 with packages or with shaping in form of blocks or portions
    • 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
    • A23L3/37—Freezing; Subsequent thawing; Cooling with addition of or treatment with chemicals
    • A23L3/375—Freezing; Subsequent thawing; Cooling with addition of or treatment with chemicals with direct contact between the food and the chemical, e.g. liquid nitrogen, at cryogenic temperature
    • 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
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/04—Charging, supporting, and discharging the articles to be cooled by conveyors

Abstract

A method and apparatus for freezing a surface layer of food product (6), placed on a non-foraminous conveyor belt (7) wherein cold air in the form of jets is blown towards the underside of the non-foraminous conveyor belt. The apparatus for carrying out the method comprises, in addition to the non-foraminous conveyor belt (7), a plurality of stationary nozzles (14) for producing jets towards the underside of the non-foraminous conveyor belt in an area which extends over the width of the non-foraminous conveyor belt.

Description

The method and apparatus of surface freezing
The present invention relates to the freezing method and apparatus of food product superficial layer.
When not having the product of complete solid-state structure, product is easy to cast on the freezing thereon base plate of product when freezing.If when the shape of base plate was different from the shape that product requires when its final freezing shape, this was disadvantageous.Also exist product to be frozen in risk on the base plate, this can cause the product defectiveness on the one hand, and on the other hand, the product residue of staying on the base plate need be removed before reusing base plate.
Know,, freezingly just can avoid fast if base plate has very low temperature.But this is the method for a suitable consumes energy, because it requires liquid nitrogen or analog.But substituting is used paper tinsel between base plate and product, and at this moment, product does not need so low temperature.But hot conduction will be relatively poor relatively, particularly, not be so soft as fruit product, so that its most of lower surface can be depressed into paper tinsel with base plate and directly contacts.
The objective of the invention is to propose a kind of method, guarantee that simultaneously the superficial layer on the most of lower surface of product is freezing with Energy Efficient mode frozen food product superficial layer.
According to the present invention, this purpose can obtain by the method and apparatus with exclusive characteristics, and they can correspondingly be clear that by appended independent solution claim and device claim.Various embodiment will appear in the appended claims.
In the method for being invented, food product is placed on the non-pore conveyer belt, is blown to the downside of conveyer belt and shape is the cold air of jet.This causes non-pore conveyer belt from the highly effective cooling of its downside, thereby reaches thin layer freezing rapidly of the most close product lower surface, and described lower surface directly is resisted against on the upside of non-pore conveyer belt.
Make food product directly bear cold jet and just know before being with frozen food product, but many products have and be entirely or part is loose packing, they just may not bear such jet certainly.But adopt non-pore conveyer belt, if jet is guided the downside of conveyer belt into for it, and it be not make too thickly or thermal conductivity too poor, also may be at least on the surface of direct contact conveyer belt freezing such food product.
In recommendatory embodiment, non-pore conveyer belt comprises the non-pore paper tinsel band that is supported by the pore supporting strap.When cold jet blowed to the downside of this conveyer belt, they were by the pore supporting strap, even this surface is not among peaceful whole tight contact that yet the paper tinsel band can be pressed into the most of downside of food product.Like this, excellent heat conduction just can reach, and the bottom of food product just can be transferred to freezing state rapidly.
In an alternative embodiment, conveyer belt comprises the single metal with good heat-conductivity or the band of certain other material, at this moment also can reach excellent heat conduction, thereby the bottom of food product can be transferred to freezing state rapidly.
Cold air preferably blows to the downside of the non-pore conveyer belt in the FX with pattern, this FX stretches on the width of non-pore conveyer belt, and simultaneously, non-pore conveyer belt moves past FX continuously.
In one embodiment, also used and put non-pore cover tape, it is placed on the top of the food product on the non-pore conveyer belt, and contact with it, puts non-pore cover tape on this and moves abreast herein.At this moment, cold air also blows to the upside of putting cover tape with pattern.As a result, the whole superficial layer of food product, or its major part can be freezing effectively is promptly with good heat conduction with carry out freezing at short notice.
For the device of realizing institute's inventive method comprises non-pore conveyer belt and plurality of fixed nozzle, these fixed nozzles are used for cold air is blowed to the downside of the non-pore conveyer belt in a zone with pattern, and this zone is stretched on the width of non-pore conveyer belt.
In recommendatory embodiment, non-pore conveyer belt comprises non-pore paper tinsel band, and this paper tinsel band is supported by the pore supporting strap.
Alternately, non-pore conveyer belt can be made of the non-pore band of metal single, that have good heat-conductivity or certain other material.
In one embodiment, device also comprises and puts non-pore cover tape, and the top that it is arranged in non-pore conveyer belt is placed on food product on the described conveyer belt with covering; And some additional fixed nozzles, being used for shape is that the cold air of jet blows to the upside of putting non-pore cover tape.
On put the preferably non-pore paper tinsel of cover tape band, but it also can be made of the band of the metal with good heat-conductivity or certain other material.
Referring now to accompanying drawing embodiments of the invention are carried out comparatively detailed explanation, this figure is the diagrammatic side view of food product refrigerating plant.
More specifically, this figure has showed freezer unit 1, and it has supply port 2 and delivery outlet 3.Freezer unit 1 can be to use that class freezer unit of pore conveyer belt 4, the food product that desire is freezing moves to delivery outlet 3 from supply port 2 along the helical path for it, cold air forces around food product and blows simultaneously, thereby when arriving the delivery outlet 3 of freezer unit 1, product is freezing fully.
According to the present invention, device 5 is used as the precooling device, is used for producing frozen coating at food product 6 bottoms at least before on the pore conveyer belt 4 that food product 6 is positioned over freezer unit 1.
Device 5 comprises pore supporting strap 7, and it is pressed circular path and moves on two deflection roller bearings 8 and 9.Deposit cylinder 10 comprises paper tinsel band 11, and it extends on the up stroke 12 of supporting strap 7 from deposit cylinder 10 and receives cylinder 13.
Under supporting strap 7, arranging several fixed nozzles 14 thereon in the stroke 12.Stretch on the whole width of supporting strap 7 substantially in the zone that nozzle 14 is distributed, and the width of described width and paper tinsel band 11 is basic identical, or greater than the width of paper tinsel band 11.Nozzle 14 constitutes the gas outlet of pipelines 15, then it is again by fan 16 input high pressure cold air down, thus nozzle 14 jetting streams, promptly air-spray has so speed, and consequently near the air layer fragmentation of paper tinsel band 11, this has improved hot conduction widely.
Whole device is installed in the insulated case 17, and it also comprises cooling tube group 18, and the suction side of fan 16 is connected therewith.
As shown in phantom in FIG., the second paper tinsel band 19 can lead to reception cylinder 21 from deposit cylinder 20 with paralleling with supporting strap 7 and paper tinsel band 11 substantially.Can be made into along a paths action by resilient suspension deflection roller bearing 22 and 23, the second paper tinsel bands 19, the contact of this path is at the top surface along the food product 6 that transmits on the paper tinsel band 11 of up stroke 12 and the supporting strap 7.
Paper tinsel band 19 is also pressed to the top surface of food product 6 downwards by the cold air jet, this strand cold air jet is guided into the upside of the second paper tinsel band 19 by nozzle 24.Identical with nozzle 14, nozzle 24 constitutes the gas outlet of pipeline 25, it can be connected to the outlet side of fan 16, or be connected to the outlet side of the fan of corresponding layout, thereby oppress the second paper tinsel band 19 from the cold air jet that nozzle 24 flows out, make it well contact the superficial layer of the most close paper tinsel band 19 of snap frozen with the major part of the top surface of product 6 at least.
In the foregoing description of the device that the present invention proposes, supporting strap 7 and paper tinsel band 11 constitute non-pore conveyer belt, and it supports food product 6, and the cold air jet that flows out from nozzle 14 then blows to its downside in up stroke 12.In an alternative embodiment, the non-pore band of metal or certain other material is alternative is with 7 and be with 11, relies on itself just to constitute non-pore conveyer belt.
In the foregoing description of apparatus of the present invention, paper tinsel band 19 forms non-pore cover tape in the same manner, and in an alternative embodiment, it can be to have the metal of thermal conductive resin or the band of certain other material.

Claims (10)

1. a method that is used for the superficial layer of frozen food product (6) is characterized in that, food product (6) is placed on the non-pore conveyer belt (7,11), and the cold air of pattern blows to the downside of non-pore conveyer belt.
2. method as claimed in claim 1 is characterized in that, the cold air of described pattern blows to the downside of the non-pore conveyer belt (7,11) that is positioned at FX, and this zone is stretched on the width of non-pore conveyer belt, and non-pore conveyer belt moves past FX continuously.
3. as the method for claim 1 or 2, it is characterized in that, be positioned over non-pore conveyer belt (7,11) top on put non-pore cover tape (19) and move in parallelly, the cold air of pattern blows to the upside of putting non-pore cover tape.
4. a device that is used for the superficial layer of frozen food product (6) is characterized in that; Non-pore conveyer belt (7,11) and plurality of fixed nozzle (14), these fixed nozzles (14) are used for cold air is blowed to the downside of the non-pore conveyer belt in a zone with pattern, and this zone is stretched on the width of non-pore conveyer belt.
5. device as claimed in claim 4 is characterized in that, non-pore conveyer belt (7,11) comprises non-pore paper tinsel band (11), and this paper tinsel band (11) is supported by pore supporting strap (7).
6. device as claimed in claim 4 is characterized in that, non-pore conveyer belt is single, as the to have good heat-conductivity metal or the non-pore band of certain other material.
7. as the device of each claim among the claim 4-6, it is characterized in that putting non-pore cover tape (19), it is arranged in the top of non-pore conveyer belt (7,11), is placed on food product (6) on the described conveyer belt in order to covering; And some additional fixed nozzles (24), be used for the cold air of pattern is blowed to the upside of putting non-pore cover tape.
8. device as claimed in claim 7 is characterized in that, on to put non-pore cover tape (19) be non-pore paper tinsel band.
9. device as claimed in claim 7 is characterized in that, on to put non-pore cover tape be a kind of the have metal of good heat-conductivity or band of certain other material.
10. as the device of each claim among the claim 4-10, it is characterized in that it is configured for the precooling device (5) of the freezer unit (1) of complete frozen food product (6).
CNB988054841A 1997-04-25 1998-04-23 Method and apparatus for surface freezing Expired - Fee Related CN1140754C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9701550A SE506959C2 (en) 1997-04-25 1997-04-25 Methods and apparatus for surface freezing
SE97015507 1997-04-25

Publications (2)

Publication Number Publication Date
CN1257573A true CN1257573A (en) 2000-06-21
CN1140754C CN1140754C (en) 2004-03-03

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Application Number Title Priority Date Filing Date
CNB988054841A Expired - Fee Related CN1140754C (en) 1997-04-25 1998-04-23 Method and apparatus for surface freezing

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EP (1) EP0977970A1 (en)
JP (1) JP2001527633A (en)
CN (1) CN1140754C (en)
AU (1) AU728000B2 (en)
CA (1) CA2288909C (en)
SE (1) SE506959C2 (en)
WO (1) WO1998049505A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1295471C (en) * 2005-01-28 2007-01-17 南通冷冻设备有限公司 Freezers
CN106461307A (en) * 2014-06-13 2017-02-22 卓缤科技有限公司 Temperature treatment apparatus and method for solidifying portions of fluid
CN109140861A (en) * 2018-08-06 2019-01-04 湖州日晨生态农业开发有限公司 A kind of fresh-water fishes quick-freezing plant
WO2019104783A1 (en) * 2017-12-01 2019-06-06 上海海洋大学 Circular jet nozzle structure of impact instant freezer

Families Citing this family (11)

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Publication number Priority date Publication date Assignee Title
FR2762969B3 (en) * 1997-05-07 1999-06-25 Roger Dew CONTINUOUS FREEZING ENCLOSURE WITH SUPERIMPOSED REFRIGERATED TABLES
EP0986966A3 (en) * 1998-08-10 2001-02-14 Praxair Technology, Inc. Impingement cooler
SE515811C2 (en) 1999-01-20 2001-10-15 Frigoscandia Equipment Ab Apparatus for gas treatment of products comprising a high pressure chamber
WO2001004554A1 (en) * 1999-07-07 2001-01-18 Roger Dew Quick-freeze tunnel for food products with non-continuous driving film
US6334330B2 (en) 1999-07-26 2002-01-01 Praxair, Inc. Impingement cooler
FR2808080B1 (en) * 2000-04-25 2003-04-25 Paul Tondeux DEVICE FOR OPTIMIZING THE CONTINUOUS FREEZING OF BULK PRODUCTS, INDIVIDUALLY, AN INSTALLATION EQUIPPED WITH SAID DEVICE AND APPLICATION OF SAID DEVICE
JP2003061633A (en) * 2001-08-30 2003-03-04 Ip:Kk Food freezer
US6557367B1 (en) 2002-03-28 2003-05-06 Praxair Technology, Inc. Impingement cooler with improved coolant recycle
CN100453935C (en) * 2007-06-27 2009-01-21 浙江海洋学院 Revolving drum type quick-freeze device
KR101693634B1 (en) * 2010-06-30 2017-01-06 마에카와 매뉴팩쳐링 캄파니 리미티드 Cold air injection mechanism
CN107821910A (en) * 2017-12-01 2018-03-23 上海海洋大学 A kind of elongate strip funnel-form fluidic nozzle configurations

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Publication number Priority date Publication date Assignee Title
SE424802B (en) * 1977-02-18 1982-08-16 Frigoscandia Contracting Ab PROCEDURE FOR DEFINING DEEP-FURNISHED GOODS AND DEVICE FOR CARRYING OUT THE PROCEDURE
GB2141813B (en) * 1983-05-21 1987-04-15 Star Refrigeration Cooling apparatus
US5543167A (en) * 1995-01-05 1996-08-06 Fujitetsumo Co., Ltd. Cooked rice freezing method and apparatus
US5551251A (en) * 1995-02-08 1996-09-03 York Food Systems Impingement freezer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1295471C (en) * 2005-01-28 2007-01-17 南通冷冻设备有限公司 Freezers
CN106461307A (en) * 2014-06-13 2017-02-22 卓缤科技有限公司 Temperature treatment apparatus and method for solidifying portions of fluid
US11026440B2 (en) 2014-06-13 2021-06-08 John Bean Technologies Ab Temperature treatment apparatus and method for solidifying portions of fluid
WO2019104783A1 (en) * 2017-12-01 2019-06-06 上海海洋大学 Circular jet nozzle structure of impact instant freezer
CN109140861A (en) * 2018-08-06 2019-01-04 湖州日晨生态农业开发有限公司 A kind of fresh-water fishes quick-freezing plant

Also Published As

Publication number Publication date
EP0977970A1 (en) 2000-02-09
AU728000B2 (en) 2001-01-04
WO1998049505A1 (en) 1998-11-05
CA2288909A1 (en) 1998-11-05
CN1140754C (en) 2004-03-03
SE9701550D0 (en) 1997-04-25
CA2288909C (en) 2007-01-23
SE9701550L (en) 1998-03-09
AU7353898A (en) 1998-11-24
SE506959C2 (en) 1998-03-09
JP2001527633A (en) 2001-12-25

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