CA1070131A - Method for the heat treatment of products and apparatus for carrying out the method - Google Patents
Method for the heat treatment of products and apparatus for carrying out the methodInfo
- Publication number
- CA1070131A CA1070131A CA296,949A CA296949A CA1070131A CA 1070131 A CA1070131 A CA 1070131A CA 296949 A CA296949 A CA 296949A CA 1070131 A CA1070131 A CA 1070131A
- Authority
- CA
- Canada
- Prior art keywords
- fluid
- conveyor belt
- products
- covering layer
- product
- 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
Links
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
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/04—Charging, supporting, and discharging the articles to be cooled by conveyors
-
- 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
- A23L3/16—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating loose unpacked materials
- A23L3/18—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating loose unpacked materials while they are progressively transported through the apparatus
- A23L3/185—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating loose unpacked materials while they are progressively transported through the apparatus in solid state
-
- 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
-
- 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
- A23L3/365—Thawing subsequent to freezing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Food Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nutrition Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
- Defrosting Systems (AREA)
- General Preparation And Processing Of Foods (AREA)
- Structure Of Belt Conveyors (AREA)
Abstract
Abstract of the Disclosure The invention concerns a method for that for heat treatment of un-wrapped products, especially food products, by means of a fluid, especially a liquid, which has a temperature different from that of the product and which is caused to supply heat to the product or remove heat therefrom. The new feature is that the product is placed on a support of high thermal conductivity and is covered by a thin, flexible and fluid-tight covering layer which can be brought to closely follow the product. Upon flushing of such fluid towards the underside of the support and towards the top side of the cover, the fluid is adapted to cause the cover to adhere closely to the products, thereby establishing a maxi-mized contact surface for the exchange of heat between fluid and products.
Description
.: "
~[37~3 APPLICANT: FRIGOSCANDIA CONTRACTING AB
INVENTION: A METHOD FOR THE HEAT TREATMF.NT OF PRODUCTS
AND APPARATUS FOR CARRYING OUT THE METHOD
The present invention relates to a method for heat treat-ment, such as thawing or cooling/freezing of products, especially food products, by means of a fluid, especially liquid, causing the products to exchange heat.
The invention also relates to an apparatus for carrying out the method.
A type of heat treatment, often operated on an industrial scale, is thawing of deep-frozen food pro~ucts. For this - purpose various methods are used, among which there may be mentioned, for example, treatment with stationary or circu-lating hot air, circulating cold or hot water and dielectric heating.
However, conventional methods involve obvious drawbacks, and air treatment,for instance, results in drying of the - 15 surface layers of the products while direct treatment with water results in leaching and undesired desintegration or ` dissolution of the product.
In the opposite case, i.e.when lowering the temperature of -the products and especially when such a decrease lies within temperature ranges where the product has not yet passed from a plastic to a solidified state, the problems encountered are very much the same. Thus, for example, air treatment with .
.
,, . ~' ~ : . .. .
' .:: : ~
.
~' ` ~7~3~
current cold air may cause drying and liquid treatment may cause leaching or at least partial desintegration or disso-lution of the product or its outer portions.
The object of the invention is to provide a method, as well as an apparatus for carrying out the method, which, while it retains the undeniable advantages from the point of view of heat transfer which are associated with the utilization of a fluid as a heat treatment agent, overcomes at the same time the disadvantages entailed therewith.
The new method is characterized by the following steps: -placing the products on a tight support in the form of a conveyor belt or like means of high thermal conductivity;
covering the products with a thin, fluid-tight and readily flexible covering layer which is movable in parallel with the conveyor belt and has a width greater than that of the product resting on the support; flushing the underside of the support `; with fluid of a temperature different from that of the pro-; ducts while flushing under pressure also the top side of the covering layer with such a fluid, said covering layer being caused to closely follow the free surfaces of the products and adjacent portions of the support under the influence of the mass and movement of the fluid, so as to maximize the area over which heat exchange with the fluid takes place, at the same time as the covering layer prevents the fluid from coming into contact with the product.
-~ The apparatus for carrying out the method is characte-rized in that it comprises a conveyor belt formed of material `; of high thermal conductivity which is accessible for flushing with fluid from below as well as from above, and a thin, `` 30 fluid-tight and readily flexible covering layer which can : be placed upon said conveyor belt, covering said products, . ., is movable in parallel therewith and has a width greater , .
than that of the products resting on the conveyor belt.
The method according to the invention will be described . .j in more detail hereinbelow with reference to the accompanying drawings which illustrate two preferred embodiments of appa-ratuses for carrying out the method and in which: -'~ , 3 ~7~ 3~
Fig, 1 is a schematic side elevation of one embodiment;
Fig. 2 is a schematic side elevation of the other embodi-ment; and Fig. 3 is a schematic cross-sectional view on a larger scale on the plane A-A in Fig. 1 or 2.
An endless unperforated conveyor belt 1 of stainless steel or equivalent material runs over end rollers 2 arranged at either end of a chamber ~, represented by thin lines in the draw-ings, which is closed but has an opening 3 at either end, The con-tinuous unperforated belt, thus prevents liquid sprayed from be-low from contacting products resting on the belt. The forward run of the belt 1, which carries the products X, passes through the chamber 4 while the return run preferably passes outside the cham-ber, as shown. Arranged within the chamber 4, over and under the - belt 1, is a number of flushing nozzles 5 for tempered fluid and these are connected to a supply conduit 6 for fluid from a heat ex-changer 7 or like means in which the fluid will be given the in-tended temperatureO A discharge or return conduit 8 is joined to the sloping bottom of the chamber 4 and via this conduit the water spurted out into the chamber is returned to the h0at exchanger 7.
According to the invention a covering layer 9 of thin, : water-proof and readily flexible material is placed on the conveyer belt 1~ In the embodiment of Fig. 1 the covering layer 9 consists - of a web of film 9~ which is unrolled from a roller 10, travels in parallel with the conveyor belt 1 and is rolled up on a roller 11.
The film web may be of the disposable or reusable type.
In the embodiment according to Fig. 2 the covering layer is in the form of an endless band 9' passing over end rollers 12.
. As is clearly apparent from Fig. 3, the covering layer 9 of the preferred embodiment is wider than the conveyor belt 1 so ; that the covering layer may hang down at the edges of the conveyor belt. To prevent parts of the product, such as brine, meat-juice ``' or like substances, to flow over the belt edges said belt is pro-vided witn raised edges 13, suitably in the form of rubber or like beads vulcanized thereon.
. `
' ' :
;:
. .
4 ~ 3~
As ~ho ~luid ~i~ the nozzles 5 sikulated over the belt will b~ supplied und~r pressure the co~ering layer 9 will be pre~sed down against the top side and ed:g~ starfacas of the products X~ which gives a large con~act surface for:.th~
fluid and good heat tran~er. With the apparatus according to the illvention the products X will be a~tirely covered by the coveriDg layer which und~r the influence of th~ ~luid auppl~ed closely follows the con~iguration of the p~aducts.
DUQ to the itlsignifica~t thickne~ o~ the mat~rial oî th~
coverin~ layer the he~t tran~fer between the Xluid and the prodlAct, and inversely, i9 not pre~ented to any pro~rablo extent. Since largs quan~ites o~ fluid can be supplied, ~.g.
deep ~orz~n products can be thawed in a con~iderablr ~hort~r time than ~hat i5 po~ble with previollcly known ~ethod~, without any risk of leaching or dissolut~ofi phenomena.
As substances emanating from the products are retained o~ the belt and ca~ot mix with ~he fluld~ this can be allowed to circulate a~d thlls be used repeatedly. The co~-sumptior~ of fluid~ which represents a not insig~ifica~t co~t item~ call thu~ be kept on an acceptable level~
The lllustr~ted appara~us is pri~arily intended for u~e in thawing d~ep-~rozen product~ but it i~ o~viou~ that ~t may ~u~t a~ ~ell be utillzed for cooling and/or ~reezing of pro~ucts.
Th~ fluid used for thawing ge~erally co~ists of hot water. Cold ~a~er or water admixed with an ~gent lowering the Xreezing point may be used for cooling. Liqu~lad ga~e~
are gQnerally util~zed for deep-~reezing bu~ cold air or ga~s may also be ~tilized to this effect.
Th~ i~Yentio~ ~hould no~ be con~idered restricted to tha~ which i~ descrlbad ab~ve and show~ i~ the drawi~gs but ~a~ be modl~ied i~ ~arious ~ay~ within the ~cope of the append~d claims~
~[37~3 APPLICANT: FRIGOSCANDIA CONTRACTING AB
INVENTION: A METHOD FOR THE HEAT TREATMF.NT OF PRODUCTS
AND APPARATUS FOR CARRYING OUT THE METHOD
The present invention relates to a method for heat treat-ment, such as thawing or cooling/freezing of products, especially food products, by means of a fluid, especially liquid, causing the products to exchange heat.
The invention also relates to an apparatus for carrying out the method.
A type of heat treatment, often operated on an industrial scale, is thawing of deep-frozen food pro~ucts. For this - purpose various methods are used, among which there may be mentioned, for example, treatment with stationary or circu-lating hot air, circulating cold or hot water and dielectric heating.
However, conventional methods involve obvious drawbacks, and air treatment,for instance, results in drying of the - 15 surface layers of the products while direct treatment with water results in leaching and undesired desintegration or ` dissolution of the product.
In the opposite case, i.e.when lowering the temperature of -the products and especially when such a decrease lies within temperature ranges where the product has not yet passed from a plastic to a solidified state, the problems encountered are very much the same. Thus, for example, air treatment with .
.
,, . ~' ~ : . .. .
' .:: : ~
.
~' ` ~7~3~
current cold air may cause drying and liquid treatment may cause leaching or at least partial desintegration or disso-lution of the product or its outer portions.
The object of the invention is to provide a method, as well as an apparatus for carrying out the method, which, while it retains the undeniable advantages from the point of view of heat transfer which are associated with the utilization of a fluid as a heat treatment agent, overcomes at the same time the disadvantages entailed therewith.
The new method is characterized by the following steps: -placing the products on a tight support in the form of a conveyor belt or like means of high thermal conductivity;
covering the products with a thin, fluid-tight and readily flexible covering layer which is movable in parallel with the conveyor belt and has a width greater than that of the product resting on the support; flushing the underside of the support `; with fluid of a temperature different from that of the pro-; ducts while flushing under pressure also the top side of the covering layer with such a fluid, said covering layer being caused to closely follow the free surfaces of the products and adjacent portions of the support under the influence of the mass and movement of the fluid, so as to maximize the area over which heat exchange with the fluid takes place, at the same time as the covering layer prevents the fluid from coming into contact with the product.
-~ The apparatus for carrying out the method is characte-rized in that it comprises a conveyor belt formed of material `; of high thermal conductivity which is accessible for flushing with fluid from below as well as from above, and a thin, `` 30 fluid-tight and readily flexible covering layer which can : be placed upon said conveyor belt, covering said products, . ., is movable in parallel therewith and has a width greater , .
than that of the products resting on the conveyor belt.
The method according to the invention will be described . .j in more detail hereinbelow with reference to the accompanying drawings which illustrate two preferred embodiments of appa-ratuses for carrying out the method and in which: -'~ , 3 ~7~ 3~
Fig, 1 is a schematic side elevation of one embodiment;
Fig. 2 is a schematic side elevation of the other embodi-ment; and Fig. 3 is a schematic cross-sectional view on a larger scale on the plane A-A in Fig. 1 or 2.
An endless unperforated conveyor belt 1 of stainless steel or equivalent material runs over end rollers 2 arranged at either end of a chamber ~, represented by thin lines in the draw-ings, which is closed but has an opening 3 at either end, The con-tinuous unperforated belt, thus prevents liquid sprayed from be-low from contacting products resting on the belt. The forward run of the belt 1, which carries the products X, passes through the chamber 4 while the return run preferably passes outside the cham-ber, as shown. Arranged within the chamber 4, over and under the - belt 1, is a number of flushing nozzles 5 for tempered fluid and these are connected to a supply conduit 6 for fluid from a heat ex-changer 7 or like means in which the fluid will be given the in-tended temperatureO A discharge or return conduit 8 is joined to the sloping bottom of the chamber 4 and via this conduit the water spurted out into the chamber is returned to the h0at exchanger 7.
According to the invention a covering layer 9 of thin, : water-proof and readily flexible material is placed on the conveyer belt 1~ In the embodiment of Fig. 1 the covering layer 9 consists - of a web of film 9~ which is unrolled from a roller 10, travels in parallel with the conveyor belt 1 and is rolled up on a roller 11.
The film web may be of the disposable or reusable type.
In the embodiment according to Fig. 2 the covering layer is in the form of an endless band 9' passing over end rollers 12.
. As is clearly apparent from Fig. 3, the covering layer 9 of the preferred embodiment is wider than the conveyor belt 1 so ; that the covering layer may hang down at the edges of the conveyor belt. To prevent parts of the product, such as brine, meat-juice ``' or like substances, to flow over the belt edges said belt is pro-vided witn raised edges 13, suitably in the form of rubber or like beads vulcanized thereon.
. `
' ' :
;:
. .
4 ~ 3~
As ~ho ~luid ~i~ the nozzles 5 sikulated over the belt will b~ supplied und~r pressure the co~ering layer 9 will be pre~sed down against the top side and ed:g~ starfacas of the products X~ which gives a large con~act surface for:.th~
fluid and good heat tran~er. With the apparatus according to the illvention the products X will be a~tirely covered by the coveriDg layer which und~r the influence of th~ ~luid auppl~ed closely follows the con~iguration of the p~aducts.
DUQ to the itlsignifica~t thickne~ o~ the mat~rial oî th~
coverin~ layer the he~t tran~fer between the Xluid and the prodlAct, and inversely, i9 not pre~ented to any pro~rablo extent. Since largs quan~ites o~ fluid can be supplied, ~.g.
deep ~orz~n products can be thawed in a con~iderablr ~hort~r time than ~hat i5 po~ble with previollcly known ~ethod~, without any risk of leaching or dissolut~ofi phenomena.
As substances emanating from the products are retained o~ the belt and ca~ot mix with ~he fluld~ this can be allowed to circulate a~d thlls be used repeatedly. The co~-sumptior~ of fluid~ which represents a not insig~ifica~t co~t item~ call thu~ be kept on an acceptable level~
The lllustr~ted appara~us is pri~arily intended for u~e in thawing d~ep-~rozen product~ but it i~ o~viou~ that ~t may ~u~t a~ ~ell be utillzed for cooling and/or ~reezing of pro~ucts.
Th~ fluid used for thawing ge~erally co~ists of hot water. Cold ~a~er or water admixed with an ~gent lowering the Xreezing point may be used for cooling. Liqu~lad ga~e~
are gQnerally util~zed for deep-~reezing bu~ cold air or ga~s may also be ~tilized to this effect.
Th~ i~Yentio~ ~hould no~ be con~idered restricted to tha~ which i~ descrlbad ab~ve and show~ i~ the drawi~gs but ~a~ be modl~ied i~ ~arious ~ay~ within the ~cope of the append~d claims~
Claims (6)
1. A method for heat treatment of unwrapped products, especially food products, by means of a fluid, especially a liquid which has a temperature different from that of the product and is caused to supply heat to the product or remove heat therefrom, comprising the following steps: - placing the products on a tight support in the form of a conveyor belt or like means of high thermal conductivity; covering the products with a thin, fluid-tight and readily flexible covering layer which is movable in parallel with the conveyor belt and has a width greater than that of the product resting on the support; flushing the underside of the support with fluid of a temperature different from that of the products while flushing under pressure also the top side of the covering layer with such a fluid, said covering layer being caused to closely follow the free surfaces of the products and adjacent portions of the support under the influence of the mass and movement of the fluid, so as to maximize the area over which heat exchange with the fluid takes place, at the same time as the covering layer prevents the fluid from coming into contact with the product.
2. Apparatus for heat treatment of products as claimed in the method of claim 1, comprising a conveyor belt formed of material of high thermal conductivity which is accessible for flushing with fluid from below as well as from above, and a thin, fluid-tight and readily flexible covering layer which can be placed upon said conveyor belt, covering said products, is movable in parallel therewith and has a width greater than that of the products resting on the conveyor belt.
3. Apparatus as claimed in claim 2, wherein the conveyor belt has raised edges in the form of beads or the like, and the width of the covering layer is greater than that of the conveyor belt so that the edge portions of the former hang down at the edges of the latter.
4. Apparatus as claimed in claim 2, wherein the covering layer placed on the conveyor belt consists of an endless film web which is movable in parallel with the conveyor belt.
5. Apparatus as claimed in claim 2, wherein the movable covering layer placed on the conveyor belt consists of a film web which is movable in parallel with the conveyor belt and is adapted to be unrolled from a supply reel arranged at one end of the conveyor belt and to be collected at the opposite end of the belt.
6. Apparatus as claimed in claim 2, wherein the part of the conveyor belt supporting the products to be heat treated and the covering layer extend through a chamber which , in addition to upwardly directed fluid nozzles situated below the conveyor belt, has generally downwardly directed nozzles, arranged above the conveyor belt and the covering layer placed on said belt, for flushing with fluid from above, and wherein the chamber is provided with means for collecting and returning spent fluid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7701856A SE424802B (en) | 1977-02-18 | 1977-02-18 | PROCEDURE FOR DEFINING DEEP-FURNISHED GOODS AND DEVICE FOR CARRYING OUT THE PROCEDURE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1070131A true CA1070131A (en) | 1980-01-22 |
Family
ID=20330500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA296,949A Expired CA1070131A (en) | 1977-02-18 | 1978-02-13 | Method for the heat treatment of products and apparatus for carrying out the method |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS53103260A (en) |
| CA (1) | CA1070131A (en) |
| DE (1) | DE2805131A1 (en) |
| FR (1) | FR2380744A1 (en) |
| GB (1) | GB1595552A (en) |
| SE (1) | SE424802B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4479776A (en) * | 1981-07-22 | 1984-10-30 | Smith Donald P | Thermal treatment of food products |
| JPS5655188A (en) * | 1979-08-01 | 1981-05-15 | Crepaco | Method and apparatus for defreezing frozen article |
| DE2952544A1 (en) * | 1979-12-28 | 1981-07-30 | Société des Produits Nestlé S.A., Vevey | DEVICE FOR TREATING A FOOD |
| JPS5960166A (en) * | 1982-09-27 | 1984-04-06 | 三菱電機株式会社 | Freezer |
| JPS59109158A (en) * | 1982-12-15 | 1984-06-23 | House Food Ind Co Ltd | Apparatus for continuous drying of food |
| JPS59161666A (en) * | 1983-03-04 | 1984-09-12 | 三菱電機株式会社 | Catalytic type continuous freezer |
| GB2141813B (en) * | 1983-05-21 | 1987-04-15 | Star Refrigeration | Cooling apparatus |
| JPS6183853A (en) * | 1984-10-01 | 1986-04-28 | 日新興業株式会社 | Method and device for cargo-handling article to be refrigerated of refrigerator |
| JPS6354571A (en) * | 1986-08-22 | 1988-03-08 | トキワ工業株式会社 | Continuous treater for refrigeration treatment, etc. of article |
| JPS63259366A (en) * | 1987-04-14 | 1988-10-26 | 株式会社 前川製作所 | Method of promoting heat transfer such as refrigeration, heating, drying or the like by jet air current |
| DE3930934A1 (en) * | 1988-11-18 | 1990-05-23 | Waldner Gmbh & Co Hermann | Processing small size fruits by defrosting in container - also used for thermal sterilisation and cooling to packaging temp. |
| JPH02104266A (en) * | 1989-07-28 | 1990-04-17 | Mitsubishi Electric Corp | Freezing method and apparatus therefor |
| FR2744884B3 (en) * | 1996-02-20 | 1998-03-20 | Dew Roger | PRE-COOLING DEVICE FOR TUNNEL FOR FREEZING FOOD PRODUCTS AND PRODUCTS THUS OBTAINED |
| US6148618A (en) * | 1997-04-25 | 2000-11-21 | Frigoscandia Equipment Ab | Method and apparatus for surface freezing |
| SE506959C2 (en) * | 1997-04-25 | 1998-03-09 | Frigoscandia Equipment Ab | Methods and apparatus for surface freezing |
| JP5021587B2 (en) * | 2008-08-18 | 2012-09-12 | 株式会社東洋製作所 | Continuous cooling / freezing equipment |
| JP6078227B2 (en) * | 2011-10-17 | 2017-02-08 | 大陽日酸株式会社 | Quick freezing apparatus and quick freezing method |
| GR1010247B (en) * | 2021-07-28 | 2022-06-09 | Ινοκατ Μηχανηματα Τροφικων Εταιρεια Περιορισμενης Ευθυνης, | Fast cooling appliance for products |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1773081A (en) * | 1927-06-18 | 1930-08-12 | Frosted Foods Co Inc | Refrigerating apparatus |
| GB336634A (en) * | 1929-02-06 | 1930-10-16 | Gen Foods Company | Improvements in or relating to refrigerating apparatus for comestibles |
| FR675717A (en) * | 1929-02-06 | 1930-02-13 | Gen Foods Company | Improvements to refrigeration devices |
| GB336632A (en) * | 1929-02-06 | 1930-10-16 | Gen Foods Company | Improvements in apparatus for freezing or chilling comestibles |
| US2014550A (en) * | 1931-01-20 | 1935-09-17 | Frosted Foods Co Inc | Refrigerating apparatus |
| US1953520A (en) * | 1931-05-06 | 1934-04-03 | Vogt Instant Frcezers Inc | Quick-freezing of comestibles |
| DE690554C (en) * | 1937-02-21 | 1940-04-27 | Linde Eismasch Ag | Device for quick freezing of food u. like |
| GB546876A (en) * | 1941-10-24 | 1942-08-04 | Moritz Hirsch | An improved process for quick cooling and quick freezing |
| US2324517A (en) * | 1942-04-01 | 1943-07-20 | David W King | Apparatus for freezing foodstuffs |
| US3309835A (en) * | 1964-01-23 | 1967-03-21 | Diamond Int Corp | Method and apparatus for producing packages with a heat-shrink film |
| FR1399872A (en) * | 1964-06-10 | 1965-05-21 | Device for continuously cooking, blanching or pasteurizing vegetables or fruit | |
| GB1045870A (en) * | 1964-11-09 | 1966-10-19 | Fiskeridirektoratets Kjemisk T | Improvements in or relating to the freezing of foodstuffs |
-
1977
- 1977-02-18 SE SE7701856A patent/SE424802B/en not_active IP Right Cessation
-
1978
- 1978-02-07 DE DE19782805131 patent/DE2805131A1/en active Granted
- 1978-02-08 GB GB508878A patent/GB1595552A/en not_active Expired
- 1978-02-13 CA CA296,949A patent/CA1070131A/en not_active Expired
- 1978-02-15 JP JP1636478A patent/JPS53103260A/en active Granted
- 1978-02-17 FR FR7804605A patent/FR2380744A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2805131A1 (en) | 1978-08-24 |
| JPS6132950B2 (en) | 1986-07-30 |
| DE2805131C2 (en) | 1990-03-29 |
| SE7701856L (en) | 1978-08-19 |
| FR2380744A1 (en) | 1978-09-15 |
| SE424802B (en) | 1982-08-16 |
| JPS53103260A (en) | 1978-09-08 |
| GB1595552A (en) | 1981-08-12 |
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