EP1152198A1 - Kühlstrecke - Google Patents

Kühlstrecke Download PDF

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Publication number
EP1152198A1
EP1152198A1 EP01400867A EP01400867A EP1152198A1 EP 1152198 A1 EP1152198 A1 EP 1152198A1 EP 01400867 A EP01400867 A EP 01400867A EP 01400867 A EP01400867 A EP 01400867A EP 1152198 A1 EP1152198 A1 EP 1152198A1
Authority
EP
European Patent Office
Prior art keywords
carbon dioxide
gaseous
chamber
dioxide snow
dough
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
EP01400867A
Other languages
English (en)
French (fr)
Other versions
EP1152198B1 (de
Inventor
José Buil
Hervé Flamant
Séverine Servel
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.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Carboxyque Francaise SA
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 Carboxyque Francaise SA filed Critical Carboxyque Francaise SA
Publication of EP1152198A1 publication Critical patent/EP1152198A1/de
Application granted granted Critical
Publication of EP1152198B1 publication Critical patent/EP1152198B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/001—Arrangement or mounting of control or safety devices for cryogenic fluid systems
    • 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
    • F25D3/127—Stationary devices with conveyors carrying articles to be cooled through the cooling space
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0326—Valves electrically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/013—Carbone dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/01—Purifying the fluid
    • F17C2265/015—Purifying the fluid by separating

Definitions

  • the present invention relates to a cooling device in line, in particular of food products, by controlled deposition of snow carbon dioxide, of the type comprising a carbon dioxide snow projection chamber, this chamber comprising an open outlet end, and means for production of carbon dioxide snow connected to the chamber.
  • FR 2 762 190 describes an installation for manufacturing fresh dough which includes a conveyor line along which are arranged pulp processing stations. Treatments include shaping, line cooling and cutting into pieces of the dough. The dough is cooled by the controlled deposit of dry ice on it.
  • This deposition is carried out by a device for the controlled deposition of carbon dioxide snow which comprises solenoid valves for expansion of liquid CO 2 arranged above the conveyor and connected to a source of liquid CO 2 . Cylindrical blows are connected to the solenoid valves in order to guide the carbon dioxide snow jet towards the dough on the conveyor.
  • a protective cover open towards the bottom surrounds the blunderbusses and the solenoid valves in order to channel towards a device for CO 2 extraction, the gaseous CO 2 which is produced.
  • a drawer is provided in order to close the lower opening of the hood, during the non-use phases of the device for depositing controlled dry ice.
  • the spread out dough is transferred by the conveyor below the blast pipe openings, and the production of dry ice is triggered when the dough arrives.
  • the dry ice production rate is mainly regulated depending on the speed of the conveyor and the thickness of the dough to ensure the desired cooling.
  • Pulp production lines are often used in humid environments, which causes the deposition of water drops from condensation on the blunt pipes and solenoid valves. As a result, the snow carbon dioxide becomes wet and no longer falls regularly on the dough, but falls into lumps.
  • the object of the invention is to overcome these drawbacks and to propose a carbon dioxide snow deposition device which allows snow deposition carbon control better and more reliable.
  • the invention relates to a cooling device of the aforementioned type, characterized in that the device further comprises means for the permanent supply of gaseous CO 2 connected to the chamber.
  • Figure 1 shows schematically an installation of production 2 of food products to transform a product pasty 4 in kneaders in pieces or individually conditioned portions 6 before packaging in batches and, if necessary, cooling in the chamber cold. These latter operations, known per se, are not shown on Figure 1.
  • This installation 2 comprises, arranged along a line of conveying 8, mechanical processing stations for the food product.
  • This product meets successively, when it moves in the direction of the boom, a station for shaping the product by spreading, a station for cutting 12 into pieces of the spread product 14, and a individual packaging 16 pieces of cut food product 18.
  • the installation also includes a device for the controlled deposit of dry ice 20 on the spread product 14, disposed above the line of conveying 8 between the shaping station 10 and the cutting station 12.
  • the carbon dioxide snow controlled deposition device 20 includes an enclosure 22 of gaseous CO 2 and liquid CO 2, carried by a height-adjustable support 24, and a row of eight dry ice production devices 26, connected to the distribution cabinet 22.
  • the support 24 comprises two pillars 28, 30 arranged laterally two sides of the conveyor line 8.
  • Each pillar 28, 30 consists of a base body 32, 34, in which a threaded rod 36 is rotatably housed, 38. These rods 36, 38 are screwed into sleeves 40, 42 comprising a thread interior adjustable.
  • Two irons in I 44, 46 extend from the sleeves 40, 42 horizontally and transversely above the conveyor 8 and are integrally connected to the distribution cabinet 22.
  • a wheel 48, 50 fixed on the upper end of each rod 36, 38 allows the training thereof.
  • one of the two base bodies 32, 34 is detachable.
  • the support 24 may include hydraulic cylinders for height adjustment of the distribution cabinet 22.
  • the cabinet 22 is connected by a supply line 52 to a source of liquid CO 2 at 20 bars at -20 ° C represented by the arrow 54.
  • the distribution cabinet 22 also has a CO 2 outlet 100% liquid 56 and a 100% gaseous CO 2 outlet 58.
  • the structure of the distribution cabinet 22 will be described in detail below.
  • the 100% liquid CO 2 outlet 56 is connected, on the underside of the cabinet 22 by an intermediate pipe 60 to a first collecting pipe 62, coated with thermal insulation 64.
  • the gaseous CO 2 outlet 58 is connected to a second collecting pipe 66, the two collecting pipes 62, 66 leading to the eight devices for producing dry ice 26.
  • the second collecting pipe 66 is connected on one side of the cabinet (right side of FIG. 3) to the CO 2 gas outlet 58 of the cabinet. It is substantially U-shaped with two upper ends folded inwards. In order to increase the rigidity, this collecting pipe 66 is also fixed on the other side of the cabinet (left side in Figure 3). This fixing point 70 does not have a gaseous CO 2 connection.
  • the lower part 72 of this collecting pipe 66 extends transversely and perpendicular to the conveyor line 8.
  • Eight leads 74 are stitched on this lower part 72 of the pipe 66.
  • a quick coupling 76 which can be released by simply pressing it.
  • the quick coupling is fixed on a blunderbuss 78 of a device for producing dry ice 26 and emerges in this blunderbuss.
  • this collector pipe 66 forms a support for the blinkers 78.
  • Each blunderbuss 78 is cylindrical in shape with a vertical axis, having a outlet opening 79 directed downwards, closed upwards except for the opening of the quick coupling 76 and a dry ice inlet port (not represented).
  • Each device for producing carbon dioxide snow 26 comprises an expansion solenoid valve 80 fixed to the liquid CO 2 collecting line 62 by a bypass line 82.
  • the expansion solenoid valves 80 are connected by control lines 84 to the distribution cabinet 22.
  • a flow control nozzle is mounted on each solenoid valve and has a calibrated orifice, not visible in the drawings, which opens into the carbon dioxide snow inlet orifice of each blunderbuss 78.
  • the solenoid valve 80 is not integrally connected to the blunderbuss 78. It can be fitted with a gasket in order to seal the slot which exists between the opening of the blunderbuss 78 and the solenoid valve 80.
  • a protective cover 86 of generally parallelepiped shape with a long axis substantially perpendicular to the conveyor line 8 surrounds the lower parts of the blinkers 78 and the conveyor 8. It has on its lateral side a cover 87 in order to allow the mounting of the cover. It has two passage openings 88, 90 in its end surfaces.
  • the protective cover 86 is connected via a gas sheath 92 to an extractor in order to ensure the extraction of the gaseous CO 2 in the direction of arrow 94 in FIG. 2.
  • a sensor 96 for speeds of the conveyor line 8 and / or presence of product 14 is placed above the conveyor and fixed in the cover 86. Alternatively, it can be arranged on the side of the conveyor.
  • the distribution cabinet 22 comprises, on the one hand, means for supplying CO 2 100% liquid, and, on the other hand, means for supplying CO 2 100 % gaseous.
  • the liquid CO 2 supply pipe 52 of the cabinet 22 is connected to a conventional gas vent valve 120.
  • the CO 2 gas outlet 122 from this gas trap 120 is connected to a gas CO 2 discharge pipe 124, by means of a purge authorization solenoid valve 126 connected to a control device 127 by l 'via a wiring box 129.
  • the control device 127 is located outside the cabinet for safety reasons. It controls the various components of the installation.
  • the exhaust pipe 124 leads the gaseous CO 2 out of the production room in order to avoid any danger of asphyxiation.
  • the liquid outlet 128 of the gas trap 120 is connected to a T-connector 130.
  • a first outlet of this T-connector is connected to the liquid CO 2 collecting pipe 62 as described above.
  • the second outlet of the T-connector 130 is connected to the inlet of an electric resistance CO 2 vaporizer 134 which is controlled as a function of a thermostat (not shown).
  • the outlet of this CO 2 vaporizer 134 is connected, via a line 136, a CO 2 regulator 138, a flexible line 140, and a scanning authorization solenoid valve 142, at the exit of CO 2 gas 58.
  • the regulator 138 is further connected to a pressure gauge 144 which is fixed in the outer wall of the cabinet 22 for controlling the pressure of the gaseous CO 2 .
  • a safety valve 150 is tapped on the T-connector 130 and is connected to a safety pipe 152 which opens into the CO 2 discharge pipe 124.
  • the sensor 96 and the expansion valves 80 are also connected to the control device 127.
  • the carbon dioxide snow deposition device according to the invention works as follows.
  • the cabinet 22 When the distribution cabinet 22 is started and before the production of the food product 14 is started by spreading, the cabinet ensures a permanent production of gaseous CO 2 and introduces it via the collecting line 66 of CO 2 gas and quick couplings 76 in the blunt pipes 78.
  • the CO 2 has a temperature markedly below ambient temperature, preferably at most at 0 ° C., and contains no trace of humidity.
  • the gaseous CO 2 fills the blinkers 78 completely and is evacuated through the lower orifices 79 thereof.
  • the orifices of the solenoid valves and the interior space of the blunt-ends are therefore CO 2 inerted and are kept cold.
  • the conveyor 8 and the product spreading station 10 are started.
  • the food product 14 is spread on the conveyor 8 and transported to the in-line cooling device 20.
  • the control device 127 via the sensor 96 detects the presence of the product 14 below the orifices 79 of the blunt clips 78, it activates the expansion solenoid valves 80 and produces dry ice 98 from the liquid CO 2 supplied by the distribution cabinet 22.
  • the injection rate is regulated by the timing of the opening of the solenoid valves. Snow production can be controlled by a delay or injection time timer or by other sensors possibly present in the installation.
  • the snow 98 then falls on the upper surface of the dough and forms a layer 100 thereon.
  • the permanent inerting of the nozzles of the expansion solenoid valves 80 there is no risk of clogging thereof.
  • the interior of blunderbouts 78 being completely free of moisture, the snowflakes carbon dioxide do not agglomerate.
  • the amount of snow carbon dioxide is well controlled and precise, so that it deposits a layer of dry ice 100 regular without lumps on the dough 14.
  • the permanent CO 2 gas sweep prevents the introduction of dust into the blinkers 78 and the orifices of the solenoid valves 80.
  • the gaseous CO 2 has a maximum temperature of 0 ° C, frozen drops of condensed water possibly present on the external surface of the blobs do not thaw. Consequently, a drawer for closing the lower opening of the cover is not necessary, and no dripping occurs.
  • the quick connectors 76 allow quick and easy detachment of 78 blunderbuttons for maintenance and easy cleaning of the device.
  • the actuation of the quick couplings 76 is easily possible and without the need to wait a long time thanks to the gel reduced of the quick couplings 76 compared to an arrangement of the couplings on the solenoid valves. This leads to increased availability of the installation.
  • the in-line cooler 20 can be installed on the production line in any place where a sufficient surface large conveyor is available.
  • the production of carbon dioxide snow is timed so as to deposit a layer of carbon dioxide snow 100 on each cut piece 18.
  • the permanent scanning of CO 2 of the blobs avoids as previously fouling and rising humidity in the expansion solenoid valves.
  • solenoid valves no longer clogging
  • solenoid valves with thinner holes or larger opening angles small ones can be used.
  • the device according to the invention is particularly well suited for cooling dough products or dairy products, it can be applied to the cooling of other products.
  • a food product of any type for example meats, vegetables, cheeses, etc.
  • any preparation for example cooked, raw, .
  • the device according to the invention mounted upstream of a freezer mechanical allows pre-cooling to increase the efficiency of the freezer and ensure material gain of the product by reducing losses of water.
  • the device allows the stiffening of products or layers of products to facilitate their handling without marking or the realization in continuous multi-layer products.
  • Products e.g. cheese
  • Products can be stabilized quickly by using the device.
  • fine products can be cooled by a few degrees and thus be brought to their shipping temperature.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Surgical Instruments (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Confectionery (AREA)
EP01400867A 2000-05-03 2001-04-04 Kühlstrecke Expired - Lifetime EP1152198B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0005645A FR2808585B1 (fr) 2000-05-03 2000-05-03 Dispositif de refroidissement en ligne
FR0005645 2000-05-03

Publications (2)

Publication Number Publication Date
EP1152198A1 true EP1152198A1 (de) 2001-11-07
EP1152198B1 EP1152198B1 (de) 2004-11-10

Family

ID=8849844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01400867A Expired - Lifetime EP1152198B1 (de) 2000-05-03 2001-04-04 Kühlstrecke

Country Status (5)

Country Link
EP (1) EP1152198B1 (de)
AT (1) ATE282183T1 (de)
DE (1) DE60107008T2 (de)
ES (1) ES2231402T3 (de)
FR (1) FR2808585B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20131477A1 (it) * 2013-09-09 2015-03-10 Sol Spa Procedimento e apparecchiatura per la pulitura della superficie di prodotti alimentari.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3014705A (en) * 1958-08-11 1961-12-26 Fairchild Stratos Corp Cryogenic spray ejector
EP0872563A1 (de) * 1997-04-28 1998-10-21 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Vorrichtung und Verfahren zum Wärmebehandeln
FR2762190A1 (fr) * 1997-04-03 1998-10-23 Carboxyque Francaise Procede de fabrication de pate fraiche, installation de fabrication et dispositif de depot de neige carbonique correspondants

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3014705A (en) * 1958-08-11 1961-12-26 Fairchild Stratos Corp Cryogenic spray ejector
FR2762190A1 (fr) * 1997-04-03 1998-10-23 Carboxyque Francaise Procede de fabrication de pate fraiche, installation de fabrication et dispositif de depot de neige carbonique correspondants
EP0872563A1 (de) * 1997-04-28 1998-10-21 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Vorrichtung und Verfahren zum Wärmebehandeln

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20131477A1 (it) * 2013-09-09 2015-03-10 Sol Spa Procedimento e apparecchiatura per la pulitura della superficie di prodotti alimentari.
WO2015033300A1 (en) * 2013-09-09 2015-03-12 Sol S.P.A. Method and apparatus for cleaning the surface of food products

Also Published As

Publication number Publication date
DE60107008T2 (de) 2006-03-16
EP1152198B1 (de) 2004-11-10
DE60107008D1 (de) 2004-12-16
ES2231402T3 (es) 2005-05-16
FR2808585B1 (fr) 2002-06-28
FR2808585A1 (fr) 2001-11-09
ATE282183T1 (de) 2004-11-15

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