NZ254174A - Method and apparatus for preparing frozen foodstuffs; products are cooled by a refrigerating assembly before passing through a freezing tunnel on an endless belt - Google Patents
Method and apparatus for preparing frozen foodstuffs; products are cooled by a refrigerating assembly before passing through a freezing tunnel on an endless beltInfo
- Publication number
- NZ254174A NZ254174A NZ254174A NZ25417493A NZ254174A NZ 254174 A NZ254174 A NZ 254174A NZ 254174 A NZ254174 A NZ 254174A NZ 25417493 A NZ25417493 A NZ 25417493A NZ 254174 A NZ254174 A NZ 254174A
- Authority
- NZ
- New Zealand
- Prior art keywords
- products
- endless belt
- deep
- cooled
- tunnel
- Prior art date
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
- 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
-
- 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
- A23L3/361—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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nutrition Science (AREA)
- Food Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Method for deep-freezing food products using a freezing tunnel (1) comprising an endless belt (3) having a helicoid structure (31), the products (4) to be frozen being arranged bearing, via their lower face, on the endless belt at the height of an orifice (21) for introduction of the products into the tunnel, which method is characterised in that the products to be frozen are arranged on the endless belt (3) in the cooled state, these products being cooled by a refrigeration assembly (5) arranged in proximity to the introduction orifice of the tunnel and including at least one cooling plate (6) over which, and bearing on which, a flexible, straight sheet material, supporting the product to be cooled, advances. <IMAGE>
Description
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9
4 1 7 4
New Zealand No. 254174 International No. PCT/FR93/00743
Priority Oate(s):
Complete Specification Filed: j Class: j
- I
Publication Date: <L(lMAR..J998-.
P.O. Journal No:
NEW ZEALAND PATENTS ACT 1953 COMPLETE SPECIFICATION
Title of Invention:
Method and apparatus for freezing foodstuffs and resulting frozen products
Name, address and nationality of applicant(s) as in international application form: A oitiu*
DEW, ROGER BARLOW,, of 40, boulevard Suchet, F-75016 Paris, France
4 /
1
ORIGINAL
A Method and r.i-paratus for the Deep-freezing of Food Products, and the Deep-frozen Products Thereby Obtained
According to the method of the invention, deep-freezing is achieved by means of a deep-freezing tunnel comprising a spiral-type endless-belt conveyor. The products to be deep-frozen are deposited bottom-down on the endless belt, at the in-feed opening of the tunnel; and they are removed from the tunnel in the frozen state at the discharge opening. The method according to the invention is distinguished by the fact that the products about to be deep-frozen are deposited on the endless belt in a cooled state — or at least their bottom surface is in a cooled state — the products having been cooled by a refrigeration unit located near the in-feed opening of the tunnel and comprising at least one refrigeration plate over which and supported by which there passes a flexible, rectilinear, material in sheet-form on which the product to be cooled is borne.
The method of the invention is illustrated in the single drawing attached hereto, which shows a diagrammatic side view of one ombodiment of the apparatus for implementing the method of the invention.
The main object of the invention is to achieve the deep-freezing of food products, with faultless hygiene a deep-freezing tunnel with a spiral endless belt, w the same time avoiding any deformation of the produ during deep-freezing.
2
4 i /
The present invention also makes it possible to avoid weight losses in the food product due to dehydration, considerably reducing the accumulation of frost on the tunnel's evaporators.
Thus, according to the invention, a rectilinear cooling unit, in which the products to be cooled are deposited onto a rectilinear support that is preferably not reusable, is combined with a deep-freezing tunnel in which a spiral endless belt runs continuously, and in which the deepfreezing of the food products takes place. The purpose of the refrigeration unit is essentially to glaze the product about to be deep-frozen, especially on its bottom surface, in order to produce a crust on this surface under optimum hygiene conditions and without deformation of the product. The product is then deposited on the spiral belt of the deep-freezing tunnel.
Thus, since the product deposited on the spiral endless belt is already "crusted" on its bottom surface, it is not liable to stick to the endless belt during deep-freezing. Therefore it can move relative to the endless belt without becoming deformed when the belt assumes its spiral form.
Also, because the food product entering the deepfreezing tunnel is already in the "crusted" state, this prevents evaporation, in the tunnel, of water from the product undergoing deep-freezing, thus considerably reducing the accumulation of frost on the evaporators of the tunnel.
Finally, since the products to be deep-frozen have already been "crusted" in a cooling unit, where they sit on a sheet of non-reusable material, not only is optimal product hygiene guaranteed throughout the deep-freez"i chain, but product weight loss by dehydration on t surface in contact with the support is also avoide
ilM
Referring to the attached drawing, the apparatus is thus constituted by a deep-freezing tunnel 1 comprising, inside an enclosure 2, an endless belt 3 with a spiral configuration 3i, on which the products are borne while s they are being deep-frozen.
This enclosure 2 also comprises cooling circuits known in the art. These are not shown in the drawing.
The products that are to be deep-frozen 4 are deposited on the endless belt 3 at the in-feed opening 2i through 10 which the products enter the tunnel and are removed from the endless belt at a discharge opening 22 where the deep-frozen products emerge from the tunnel.
The products 4 deposited on the endless belt 3 at the in-feed opening 2 have come from the cooling unit 5 which is is located near this opening 2i so that the cooled products can be deposited directly onto the endless belt 3.
This cooling unit 5 comprises a cooling plate 6 inside which are provided e.g. the circulation pipes of a liquid coolant. On the top surface of this plate 6 there runs a 20 rectilinear sheet material 7 which also passes around guide rollers 8 and is unwound from a reel 9.
This sheet material can be made of paper, plastic, a metal such as aluminium, or a combination of a number of these materials.
The rectilinear surface of this sheet 7 is supported on the plate 6. The product that is to be deep-frozen is deposited on said sheet-surface at 11, and is thus moved forward simultaneously with the forward movement of the sheet 7 so as to be provided with a "crust" on at least^
bottom surface of said product 4, by contact thereoJ
the cooling plate 6, with the rectilinear surface j^f^the
/ «<•
4
2 ^ 4\ 7 4
sheet 7 serving as an intermediate element resting on this plate 6.
In the example shown, this sheet 7 is unwound from reel 9 and rewound onto reel 10.
Thus this material 7 in sheet form is preferably not reused, thereby guaranteeing optimum hygiene throughout the cold chain and particularly on the endless belt 3, because the products that are to be deep-frozen have already been "crusted" beforehand on a surface that will not used again.
In the example illustrated, the cooled products are deposited by the sheet-material 7 directly onto the endless belt 3, but of course if it is considered desirable for manufacturing reasons, an intermediate transfer mechanism can be provided between the cooling unit 5 and the tunnel 2
is if it appears necessary for reasons relating to the layout of the combined units, bearing in mind that the product that is to be deep-frozen must be subjected to temperature conditions such that it does not stick to the spiral belt during deep-freezing.
Likewise, if desired, a second cooling plate 6i can be provided above plate 6, to augment the crusting of the lower surface of the food products 4, and also to further reduce weight losses due to product dehydration and hence the accumulation of frost on the evaporators of the tunnel
2 .
This upper cooling plate 6i, which does not act by contact and which does not support the products 4, can however be replaced with another means of refrigeratic^ ? Affv\ for example, an evaporator with fins and fans. //* °*
I 'SOf ~z
Naturally, the speed of the sheet material 7 wilaL^be <•"<? f °
controllable, so that it can be adjusted to the speecfkcSE. J y
VE D
the endless belt 3. ^=====3®^
*
Claims (4)
1. A method for the deep-freezing of food products using a deep-freezing tunnel comprising an endless belt with a spiral configuration, with the products for deep-freezing being deposited bottom-down onto the endless belt at the in-feed opening of the tunnel, and with the products being removed in the deep-frozen state at the discharge opening, said method being characterized in that: the products that are to be deep-frozen are deposited on the endless belt in a cooled state, or at least with their bottom surface in a cooled state, said products having been cooled by a refrigeration unit located near the in-feed opening of the tunnel and comprising at least one refrigeration plate on which there runs a flexible, rectilinear material in sheet form, supported by the plate and bearing the products to be cooled.
2. The apparatus for implementing the method according to claim 1.
3. A apparatus in accordance with claim 2, characterized in that the sheet of flexible material deposits the cooled products directly onto the endless belt.
4. A deep-frozen product obtained when prepared by a method as claimed in claim 1.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9208981A FR2693877B1 (en) | 1992-07-21 | 1992-07-21 | Method and installation for the freezing of food products as well as the frozen products obtained. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NZ254174A true NZ254174A (en) | 1996-03-26 |
Family
ID=9432095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NZ254174A NZ254174A (en) | 1992-07-21 | 1993-07-20 | Method and apparatus for preparing frozen foodstuffs; products are cooled by a refrigerating assembly before passing through a freezing tunnel on an endless belt |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP0580466B1 (en) |
| AT (1) | ATE135537T1 (en) |
| AU (1) | AU665449B2 (en) |
| CA (1) | CA2099515C (en) |
| DE (1) | DE69301873T2 (en) |
| DK (1) | DK0580466T3 (en) |
| ES (1) | ES2087679T3 (en) |
| FI (1) | FI112775B (en) |
| FR (1) | FR2693877B1 (en) |
| GR (1) | GR3020199T3 (en) |
| NO (1) | NO309252B1 (en) |
| NZ (1) | NZ254174A (en) |
| WO (1) | WO1994002037A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2744884B3 (en) * | 1996-02-20 | 1998-03-20 | Dew Roger | PRE-COOLING DEVICE FOR TUNNEL FOR FREEZING FOOD PRODUCTS AND PRODUCTS THUS OBTAINED |
| FR2762969B3 (en) * | 1997-05-07 | 1999-06-25 | Roger Dew | CONTINUOUS FREEZING ENCLOSURE WITH SUPERIMPOSED REFRIGERATED TABLES |
| FR2771826B1 (en) * | 1997-12-03 | 2000-02-25 | Cims | DEVICE FOR CONTROLLING THE WINDING SPEED OF A FILM ON A WINDING COIL |
| FR2775062B1 (en) | 1998-02-16 | 2000-04-07 | Cims | COOLING DEVICE WITH FIXED COOLED SOLE AND MEANS DESIGNED FOR ALLOWING THE MOVEMENT OF ARTICLES ON THE SAME |
| FR2775063B1 (en) | 1998-02-16 | 2000-04-07 | Cims | INSTALLATION FOR COOLING ARTICLES INCLUDING A FIXED COOLED SUN |
| US6009719A (en) * | 1998-05-06 | 2000-01-04 | York International Corporation | System for thermal treating of food products |
| US6006536A (en) * | 1998-05-06 | 1999-12-28 | York International Corporation | System for multi-pass thermal treating of food products |
| WO2001004554A1 (en) * | 1999-07-07 | 2001-01-18 | Roger Dew | Quick-freeze tunnel for food products with non-continuous driving film |
| ES2168910B1 (en) * | 1999-08-04 | 2003-02-16 | Talleres Zelaieta S L | ULTRACONGELATION TUNNEL FOR FOOD PRODUCTS. |
| EP1306019A4 (en) * | 2000-08-04 | 2006-08-30 | Fuji Oil Co Ltd | Method of continuously producing frozen foods |
| CN106721901B (en) * | 2016-11-17 | 2020-08-14 | 浙江省海洋水产研究所 | Rolling curtain type aquatic product quick-freezing equipment and quick-freezing method |
| CN115088756B (en) * | 2022-08-29 | 2022-10-28 | 合肥工业大学 | Meat preservation equipment and method capable of widening ice temperature zone |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK166381A (en) * | 1981-04-13 | 1982-10-14 | Dansk Ind Syndikat | PROCEDURE FOR THE PREPARATION OF FROZEN CASTLE FORM AND PLANT FOR USE IN EXERCISE OF THE PROCEDURE |
| US4576014A (en) * | 1985-01-31 | 1986-03-18 | Western Precooling Systems, Inc. | Produce vacuum cooler with improved venting |
| GB2225846A (en) * | 1988-12-09 | 1990-06-13 | Air Prod & Chem | Tunnel freezer |
| EP0473851B1 (en) * | 1990-09-05 | 1994-02-02 | The Japan Steel Works, Ltd. | Vacuum cooling method and apparatus |
-
1992
- 1992-07-21 FR FR9208981A patent/FR2693877B1/en not_active Expired - Fee Related
-
1993
- 1993-06-24 AT AT93401625T patent/ATE135537T1/en not_active IP Right Cessation
- 1993-06-24 ES ES93401625T patent/ES2087679T3/en not_active Expired - Lifetime
- 1993-06-24 EP EP93401625A patent/EP0580466B1/en not_active Expired - Lifetime
- 1993-06-24 DK DK93401625.4T patent/DK0580466T3/en active
- 1993-06-24 DE DE69301873T patent/DE69301873T2/en not_active Expired - Lifetime
- 1993-07-02 CA CA002099515A patent/CA2099515C/en not_active Expired - Fee Related
- 1993-07-20 NZ NZ254174A patent/NZ254174A/en not_active IP Right Cessation
- 1993-07-20 AU AU45746/93A patent/AU665449B2/en not_active Ceased
- 1993-07-20 WO PCT/FR1993/000743 patent/WO1994002037A1/en active IP Right Grant
-
1994
- 1994-12-22 FI FI946046A patent/FI112775B/en not_active IP Right Cessation
-
1995
- 1995-01-20 NO NO950214A patent/NO309252B1/en unknown
-
1996
- 1996-06-12 GR GR960401565T patent/GR3020199T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2693877A1 (en) | 1994-01-28 |
| FI112775B (en) | 2004-01-15 |
| ATE135537T1 (en) | 1996-04-15 |
| EP0580466B1 (en) | 1996-03-20 |
| FR2693877B1 (en) | 1994-12-16 |
| NO950214D0 (en) | 1995-01-20 |
| DE69301873T2 (en) | 1996-10-24 |
| GR3020199T3 (en) | 1996-09-30 |
| ES2087679T3 (en) | 1996-07-16 |
| DK0580466T3 (en) | 1996-07-22 |
| AU4574693A (en) | 1994-02-14 |
| FI946046A (en) | 1994-12-22 |
| WO1994002037A1 (en) | 1994-02-03 |
| AU665449B2 (en) | 1996-01-04 |
| DE69301873D1 (en) | 1996-04-25 |
| CA2099515A1 (en) | 1994-01-22 |
| CA2099515C (en) | 2003-09-23 |
| FI946046A0 (en) | 1994-12-22 |
| NO950214L (en) | 1995-01-20 |
| NO309252B1 (en) | 2001-01-08 |
| EP0580466A1 (en) | 1994-01-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RENW | Renewal (renewal fees accepted) | ||
| RENW | Renewal (renewal fees accepted) | ||
| ASS | Change of ownership |
Owner name: LINDE AG, DE Free format text: OLD OWNER(S): ROGER BARLOW DEW |
|
| EXPY | Patent expired |