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
  • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
  • F25D3/12—Devices using other cold materials; Devices using cold-storage bodies using solidified gases, e.g. carbon-dioxide snow
• • A—HUMAN NECESSITIES
  • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
  • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
  • A23B4/00—Preservation of meat, sausages, fish or fish products
  • A23B4/06—Freezing; Subsequent thawing; Cooling
  • A23B4/08—Freezing; Subsequent thawing; Cooling with addition of chemicals or treatment with chemicals before or during cooling, e.g. in the form of an ice coating or frozen block
  • A23B4/09—Freezing; Subsequent thawing; Cooling with addition of chemicals or treatment with chemicals before or during cooling, e.g. in the form of an ice coating or frozen block with direct contact between the food and the chemical, e.g. liquid N2, 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
  • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
  • F25D2400/28—Quick cooling

Definitions

• the present invention relates in particular to the field of the food industry, and is particularly interested in the fact of being able to propose a new process for simultaneously mixing and cooling a product, this being deposited in a container, at the same time, the product and dry ice, homogeneously.
• This type of process has applications for example in the field of dough products, or meat, and for illustrative purposes, considering the example of meat, this way of proceeding makes it possible to avoid overheating and to prepare the meat at a later stage of forming
• this period of storage it is advantageous or necessary to use this period of storage to also perform the cooling of the product or its maintenance in cold.
• the meat when the meat is boned before further processing, during the boning process the meat reaches a temperature which is higher than the optimum temperature which must be respected for its storage (for obvious health reasons).
• the meat is located in large containers which it is not easy to cool the contents, and the transfer of frigories to the product is very slow and inefficient.
• One of the objectives of the present invention is then to propose a new system for mixing and cooling a product, this by coming to deposit in a container, at the same time, the product and dry ice, homogeneously, new system more effective than the less sophisticated systems of the prior art that use simple CO2 sticks, and simpler than some other previous systems described above which are penalized by their too complex and difficult to clean.
• the present invention provides a very original system, where the overall operation referred to here is achieved by the use of a blunderbuss equipped with a double jacket, to mix the snow carbonic acid and the product to be cooled or kept cold.
• the product to be cooled passes into the double jacket (while the CO2 is produced and extracted from the inside of the blunderbuss), and falls into the tank or collection container with the snow which sublimates and which transfers its frigories to the product. .
• the present invention thus relates to a method for mixing and cooling a product, during which the product and carbon dioxide snow is deposited in a receptacle simultaneously, which is characterized in that a blunderbuss equipped with an outer double jacket, the product to be cooled passing through the outer jacket while the dry ice is produced and extracted from inside the blunderbuss, the product thus falling into the receptacle at the same time as the snow, which sublimates and transfers its frigories to the product.
• the gases formed in the receptacle are extracted and discharged to the outside;
• the present invention also relates to an installation for mixing and cooling a product, intended to deposit in a receptacle, simultaneously, the product and dry ice, homogeneously, characterized in that it comprises a blunderbuss equipped with an outer double jacket, able to receive the product to be cooled in the outer jacket, and to be supplied with liquid CO2 to produce snow from inside the blunderbuss, and thus to drop the product into the receptacle at the same time as the snow, which sublimates and transfers its frigories to the product.
• the installation comprises an insulation positioned between the outer jacket and the central portion of the CO 2 production blunderbuss.
• the installation comprises:
• An extractor system able to extract and evacuate to the outside gases forming in the container; a temperature probe capable of measuring the temperature of the gases in the extractor,
• a system for acquiring and processing data able to receive and process this temperature information, and to feed back to regulate the injection of liquid CO2 into the blunderbuss.
• FIG. 1 shows schematically and partially a view of the double-bladed trombone according to the invention
• FIG. 2 is a schematic overall view of an installation according to the invention for mixing and cooling a product, performing the deposition in a container, simultaneously, the product and dry ice, homogeneously.
• FIG. 1 The reading of FIG. 1 is better understood by the double-envelope conical blunderbuss structure used:
• Figure 2 allows for better visualization of an example of an installation according to the invention for mixing and cooling a product, performing the deposition in a container, simultaneously, product and dry ice, homogeneously and implementing such a jacketed blunderbuss. We then visualize well:
• the installation also has an extractor system, able to extract and evacuate to the outside gases forming in the container; according to an advantageous mode of implementation of the invention, the installation comprises a temperature probe able to measure the temperature of the gases in the extractor, and comprises a data acquisition and processing box, able to receive and process this temperature information, and retroact to regulate the injection of liquid CO 2 into the blunderbuss.
• an embodiment of this regulation is described below:
• the acquisition cabinet receives a commissioning order (for example by starting a pump) and receives a temperature data of the product entering the double envelope of the blunderbuss (for example 7 ° C) and the desired final temperature is entered / programmed in the cabinet (eg 4 ° C).
• a commissioning order for example by starting a pump
• a temperature data of the product entering the double envelope of the blunderbuss for example 7 ° C
• the desired final temperature is entered / programmed in the cabinet (eg 4 ° C).
• the difference in temperature will cause the action on the rate of injection / pause of CO 2 , for example over a period of 1 minute CO 2 injection will be 30 seconds for 70 seconds of waiting).
• a temperature probe placed in the extraction duct (at the suction) makes it possible to secure the injection: case of malfunction, adjustment or the downstream process, the temperature of the extraction gas will drop (for example if too much snow is injected the product will not be able to absorb the frigories and the temperature of the gases will inevitably fall) .
• an IMAGO 500 Multichannel Controller from JUMO makes it possible to set up such functions and also makes it possible to manage recipes, for example for different types of meat that have different specific heats.
• a CO 2 nozzle of 1.5 mm is used.
• a 2000 m 3 / h extractor is installed to recover the formed gases (CO2) with an air dilution to maintain an acceptable temperature for the extractor.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Combustion & Propulsion (AREA)
• Thermal Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Wood Science & Technology (AREA)
• Zoology (AREA)
• Food Science & Technology (AREA)
• Polymers & Plastics (AREA)

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• 2009
  • 2009-04-30 FR FR0952899A patent/FR2945110B1/fr not_active Expired - Fee Related
• 2010
  • 2010-04-15 EP EP10723680A patent/EP2425191A1/de not_active Withdrawn
  • 2010-04-15 WO PCT/FR2010/050726 patent/WO2010125275A1/fr not_active Ceased

Non-Patent Citations (1)

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