EP1213551A1 - Vorrichtung und Produktbehandlung durch ein Gas und Anlage mit solch einer Vorrichtung - Google Patents

Vorrichtung und Produktbehandlung durch ein Gas und Anlage mit solch einer Vorrichtung Download PDF

Info

Publication number
EP1213551A1
EP1213551A1 EP01402960A EP01402960A EP1213551A1 EP 1213551 A1 EP1213551 A1 EP 1213551A1 EP 01402960 A EP01402960 A EP 01402960A EP 01402960 A EP01402960 A EP 01402960A EP 1213551 A1 EP1213551 A1 EP 1213551A1
Authority
EP
European Patent Office
Prior art keywords
gas
housing
distribution
pierced
conveyor
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.)
Withdrawn
Application number
EP01402960A
Other languages
English (en)
French (fr)
Inventor
Damien Burban
Luc Rosset
Cemal Oztas
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.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP1213551A1 publication Critical patent/EP1213551A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
    • F25D3/11—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air with conveyors carrying articles to be cooled through the cooling space

Definitions

  • the invention relates to a device for treatment with products arranged below the device.
  • gas means pure gas or as a gas mixture.
  • cold is understood in a sense broad, with a meaning substantially analogous to the terms “cooled” or “to low temperature ".
  • Such a device is used in particular in the food industry where food should be processed in order to maintain its temperature, forms and appearance, before conditioning them according to various processes.
  • An example of treatment consists in cooling products food to allow their conservation. The food is then subjected to cooling by means of a refrigerant gas.
  • a classic technique is simply to place the products in a closed enclosure where all of the indoor air is cooled by devices of the aforementioned type.
  • This arrangement has many disadvantages because the refrigeration times are long, the space occupied by the enclosure is high, the transfer of products inside the enclosure complicates the manufacturing chain, and the supply of cold air is energetically expensive.
  • These drawbacks are particularly marked when only a surface region of the product requires a cooling.
  • the aforementioned technique is revealed particularly expensive since during the desired cooling of the lapping, all of the material is refrigerated, which consumes a large amount of frigories.
  • due to the very long times of cooling a viscous coating spread on an inclined surface will not not fixed quickly enough, so that appearance defects, such as drips will appear, resulting in obvious quality deficiencies.
  • One of the objectives of the invention is to provide a device of the type mentioned above, which generates a turbulent gas flow directed locally over the area of product or the entire product to be treated, while maintaining that area or the produced in a slightly turbulent and partially insulating gas atmosphere external gaseous elements.
  • the invention relates to a device of the aforementioned type, which has a cover inside which is housed a housing whose side and top walls are full, and the bottom wall of which is pierced with at least one discharge orifice; and at least one distribution tube gas, supplied with gas, arranged inside the housing, pierced with at least a lower opening located above the discharge orifice, and pierced at least one upper opening oriented towards a solid wall of the housing.
  • the subject of the invention is a treatment installation by a product gas, which includes a device as defined above, a distribution pipe supplying treatment gas to the device, the gas supply pipe of the device being connected to the distribution by means of a removable fixing.
  • Figure 1 an installation 1 of cooling of products 2 arranged on a conveyor 4.
  • Products 2 are not shown in detail. Those are unit foodstuffs, substantially similar to each other, produced, in the state considered in the figures, by a dedicated installation upstream, not shown. These products are of any shape, hollow or full; it may for example be ice cream topped with a grout to be frozen.
  • the products 2 rest on the conveyor belt 6 4.
  • This belt is permeable to gas.
  • Products 2 are arranged next to each other, such that so that they roughly form product lines in the direction longitudinal of the conveyor 4.
  • the products 2 are moved by the belt 6 of the conveyor 4, the direction of progression of which is indicated by the arrow S.
  • the conveyor moves several products 2 substantially aligned transversely, forming transverse rows of progression.
  • the conveyor 4 has drive means, known per se and not shown in detail. Likewise, the return path of the conveyor is not shown so as not to overload the drawings.
  • the cooling device 10 carried by a non-chassis shown, is located above the products 2 moved by the conveyor 4, as shown in Figures 2 to 4.
  • the cooling device 10 comprises a cover 22, of parallelepiped shape, the walls of which are full, except for its lower wall 24 pierced with discharge orifices 26.
  • the lower wall 24 is fixed to the cover 22 by means of jacks not shown, intended for allow the hood to be opened by removing the wall 24 during operations of handling or cleaning. This also allows substitution if necessary from the wall 24 by a differently perforated wall, as well as the mounting elements inside the cover 22.
  • the discharge orifices 26 formed in the wall 24 are distributed preferentially it will have been understood as the products 2.
  • a housing 28 is formed inside the cover 22.
  • This housing has a parallelepiped shape, and its walls are full, except for its lower wall formed by the perforated wall 24.
  • the inter-wall space between the side and top walls of the cover 22 and the side and upper walls of the housing 28 is advantageously filled with a thermally insulating material 29, such as polyurethane foam.
  • This member 30 is mainly composed of several tubes connected together.
  • the member 30 firstly comprises a supply conduit 32, substantially vertical and successively passing right through the wall upper part of the housing 28, the interwall of the cover 22 and its upper wall.
  • the upper end of the supply duct 32 is connected to the end downstream of the distribution line 20.
  • the connection 33 between the line 32 and the line 20 is advantageously removable and removable.
  • the lower end of the supply duct 32 is connected to a tube portion 34, arranged transversely relative to the conveyor 4.
  • the member 30 further comprises distribution tubes 36, arranged in the longitudinal direction of the conveyor 4. These tubes are connected step by step by means of transverse tubes 35, and for the two central distribution tubes, by means of the tube 34.
  • the member 30 delimits a hollow interior volume in one piece within which the gas from the supply line 32 is freely distributed and uniformly.
  • the tubes 34 and 35 are connected to the tubes of distribution 36 substantially in the middle of the distribution tubes 36, in order to facilitate the free distribution of interior gas.
  • Each distribution tube 36 is pierced with upper openings 38 and lower opening 40.
  • the upper openings 38 are oriented towards the wall upper part of the housing 28, which is a solid wall. They are noticeably aligned along the axis of the distribution tube 36, the distance separating two successive upper openings 38 being substantially constant.
  • the lower openings 40 are oriented towards the pierced lower wall 24 of the housing 28 so that each lower opening 40 is disposed substantially above a discharge orifice 26 from the wall 24.
  • the openings upper 38 are less numerous than the lower openings 40 and are offset from the lower openings 40 along the axis of the tube distribution 36, as shown in FIGS. 2.
  • a bowl 50 is arranged under the carpet 6 of the conveyor.
  • This bowl 50 is fixed, for example integral with the chassis of the conveyor 4 or resting on the ground.
  • This bowl 50 extends over substantially the entire length of the cover 12, with a width substantially equal to the width of the conveyor 4.
  • a wall of the bowl 50 is pierced with a evacuation orifice, connected to gas extraction means 51 schematically represented only in FIG. 1.
  • two plates 52, 53 are arranged laterally at the conveyor 4, over substantially the entire length of the cover 12 of the device 10. These plates 52, 53 are fixed integrally to the chassis of the conveyor 4 by appropriate means and rise to the level of the perforated plate 24.
  • the operation of the installation 1, and in particular of the device 10 according to the invention, is as follows.
  • cooling means 16 The operation of the cooling means 16 will not be detailed, since it is known art. Correctly supplied with fluid cryogenic from storage 12 and dried filtered air from filtration 14 and drying means 15, cooling means 16 provide the desired flow of cooled air at the desired temperature. This air cooled supplies the cooling device 10, using the distribution line 20.
  • the cooled air is introduced into the hollow member 30 of the device 10 in using supply line 32 to spread evenly across inside the distribution tubes 36, using the transverse tubes 34, 35.
  • the arrival of this slightly pressurized cold air expels the air ambient initially contained in organ 30.
  • the cooled air then flows outside the cross tubes 36 escaping through the upper openings 38 and the openings lower 40. Insofar as the amount of air entering the device 10 is fixed by the cooling means 16, it must escape through the openings 38, 40 the same amount of air, so that air flows to high speed are generated by each opening 38, 40. Each air flow presents turbulence, due to the high speed of exit of the air.
  • the air flow then loses its energy kinetics by impact on this wall.
  • the air speed decreases sharply and all of these low-turbulence flows generate, inside the housing 28, a calm gaseous atmosphere.
  • F2 flows from openings lower 40 and as shown in Figure 3 they do not encounter full surface but, on the contrary, escape through the evacuation orifices 26 of the lower plate 14 located substantially opposite them. F2 flows therefore maintain a high exit speed, therefore strong turbulence, under the shape of a small angle distribution cone, substantially coaxial with drain holes 26.
  • the thermal insulation means 29 contribute to achieving quickly a cold temperature inside the housing 28.
  • the conveyor is activated and the products to be cooled pass under device 10.
  • a given product passes under the succession of aligned discharge orifices 26 with the product path.
  • the product is subjected to the cold air flow F3, i.e. intense local cooling in because of the turbulence in the central area of the F3 flow, while maintaining the produced in a calmer peripheral cold environment.
  • the central area of the high speed F3 flow delivers the frigories necessary for cooling the area of the product undergoing impact, then this air, consequently slowed down and warmed up, flows along of the product, guided by the peripheral flow of F3, before flowing through air permeable mat 6 carrying the product.
  • the air is evacuated by means of the bowl 50 and extraction means 51 which are connected to it.
  • the side plates 52, 53 cooperate in the channeling of the recovered air, preventing it from escaping outside the drain pan.
  • the device 10 makes it possible to provide local a flow of process gas over a privileged area of the product.
  • the peripheral flow of the flow cone F3 also makes it possible to limit the influence external gaseous elements due to its low turbulence.
  • the device has many advantages. First, in directing the cooling flow locally, the cooling times are short, which allows for example the freezing of a food topping homogeneous on inclined or even vertical surfaces. Then this device is compatible with existing product production lines. Finally, the maintaining a slightly turbulent peripheral flow isolates both the product in itself external gaseous elements, which could for example lead to foodborne illness, as well as the entire serving the conveyor located under the device, in particular the ambient humidity which tends to settle in the form of frost. This last advantage is accentuated by the presence of the side plates 52, 53 and means 51 extracting quickly and channeled cold air.
  • the flow rate and the gas temperature are adjustable, as is the conveyor speed if the production line allows it.
  • the lower wall 24 is interchangeable, by means of the aforesaid hood opening cylinders, such so that the discharge ports, while remaining positioned one by compared to the others according to the same arrangement, can be of sizes and / or of different shapes.
  • the fact that the upper openings 38 of the tubes distribution 36 are less numerous than the lower openings 40, or these upper and lower openings are offset one by relative to the others along the axis of the distribution tube 36, does not constitute in no way a limitation to the invention.
  • Various arrangements of openings upper 38 relative to lower openings 40, both in number that in relative positioning, are possible.
  • a variant not shown of the present invention consists in successively have at least two treatment devices according to the invention. Two consecutive treatments are then carried out on the products. It can be different treatments, or on the contrary, the same treatment if the processing capabilities of a single device are insufficient or for handling reasons.
  • the device is applicable for various treatments, not limited to the distribution of cold air. So the invention is for example applicable, without departing from its framework, to devices of localized inerting of products, or to chemical catalysis devices products.
EP01402960A 2000-12-01 2001-11-19 Vorrichtung und Produktbehandlung durch ein Gas und Anlage mit solch einer Vorrichtung Withdrawn EP1213551A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0015592A FR2817612B1 (fr) 2000-12-01 2000-12-01 Dispositif de traitement de produits par un gaz et installation comportant un tel dispositif
FR0015592 2000-12-01

Publications (1)

Publication Number Publication Date
EP1213551A1 true EP1213551A1 (de) 2002-06-12

Family

ID=8857138

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01402960A Withdrawn EP1213551A1 (de) 2000-12-01 2001-11-19 Vorrichtung und Produktbehandlung durch ein Gas und Anlage mit solch einer Vorrichtung

Country Status (2)

Country Link
EP (1) EP1213551A1 (de)
FR (1) FR2817612B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2971995A1 (fr) * 2011-02-28 2012-08-31 Air Liquide Procede et installation visant a realiser une atmosphere controlee au niveau du ciel gazeux d'un recipient de stockage d'un produit mettant en œuvre une emulsion gaz/liquide

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11927383B2 (en) * 2018-12-13 2024-03-12 Messer Industries Usa, Inc. Impingement freezer wet cool down
CN113750656A (zh) * 2021-04-02 2021-12-07 北京京东拓先科技有限公司 空气过滤装置、机箱组件和智能医疗设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3494140A (en) * 1967-10-17 1970-02-10 Integral Process Syst Inc Liquid nitrogen flash freezing
US4171625A (en) * 1977-11-02 1979-10-23 Formax, Inc. Cryogenic freezing tunnel
US4931232A (en) * 1987-09-21 1990-06-05 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Cooling process for a continuously extruded product
US5450732A (en) * 1994-04-29 1995-09-19 Liquid Carbonic Corporation Distribution system for cryogen
EP0986966A2 (de) * 1998-08-10 2000-03-22 Praxair Technology, Inc. Prallströmungskühler

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3494140A (en) * 1967-10-17 1970-02-10 Integral Process Syst Inc Liquid nitrogen flash freezing
US4171625A (en) * 1977-11-02 1979-10-23 Formax, Inc. Cryogenic freezing tunnel
US4931232A (en) * 1987-09-21 1990-06-05 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Cooling process for a continuously extruded product
US5450732A (en) * 1994-04-29 1995-09-19 Liquid Carbonic Corporation Distribution system for cryogen
EP0986966A2 (de) * 1998-08-10 2000-03-22 Praxair Technology, Inc. Prallströmungskühler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2971995A1 (fr) * 2011-02-28 2012-08-31 Air Liquide Procede et installation visant a realiser une atmosphere controlee au niveau du ciel gazeux d'un recipient de stockage d'un produit mettant en œuvre une emulsion gaz/liquide
WO2012117179A1 (fr) 2011-02-28 2012-09-07 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede et installation visant a realiser une atmosphere controlee au niveau du ciel gazeux d'un recipient de stockage d'un produit mettant en oeuvre une emulsion gaz/liquide

Also Published As

Publication number Publication date
FR2817612B1 (fr) 2004-04-16
FR2817612A1 (fr) 2002-06-07

Similar Documents

Publication Publication Date Title
BE1013773A3 (fr) Appareil pour la pasteurisation d'aliments a la vapeur.
BE1008522A6 (fr) Procede de refroidissement et de calibrage d'objets oblongs en matiere synthetique et dispositif de refroidissement et de calibrage pour la mise en oeuvre du procede.
EP0250318B1 (de) Kälteverfahren und -tunnel
EP0069688B1 (de) Verfahren zur Tiefkühlung und zur Verpackung einzelner Produkte und Vorrichtung zur Durchführung dieses Verfahrens
EP0823600B1 (de) Isothermischer Behälter mit Kältespeicher
EP0369888A1 (de) Verfahren und Vorrichtung zum Sterilisieren einer Abfüllanlage für Nahrungsmittel oder pharmazeutische Produkte
EP0228308B1 (de) Verfahren und Tunnel zur oberflächlichen Abkühlung von Lebensmitteln
EP1213551A1 (de) Vorrichtung und Produktbehandlung durch ein Gas und Anlage mit solch einer Vorrichtung
EP0166655B1 (de) Verfahren und Vorrichtung zur Kühlung eines Pulvers mittels eines Kältefluidums
EP0138688A2 (de) Autoklav und Verfahren zur Sterilisation
EP1133666B1 (de) Vorrichtung zur hochtemperaturwärmebehandlung von holzartigem material
FR2963327A1 (fr) Dispositif de stockage d'articles sous atmosphere controlee
FR2734894A1 (fr) Installation pour le maintien a basse temperature d'une enceinte mobile
FR2498429A1 (fr) Enceinte de refrigeration perfectionnee
EP0578523A1 (de) Kontinuierliche Vorrichtung zum Kochen und Kühlen von vorherverpackten Nahrungsmitteln
CA2210234A1 (fr) Procede et dispositif de fabrication et de separation de particules solides
FR2758181A1 (fr) Surgelateur pour produits alimentaires en vrac avec systeme de fluidisation et de transfert
FR2700758A1 (fr) Dispositif de nettoyage pour tapis transporteur d'un surgélateur de produits alimentaires en vrac et surgélateur équipé de ce dispositif.
FR2928520A1 (fr) Dispositif et procede de refroidissement ou surgelation par jets impactants de produits alimentaires
WO2016079434A1 (fr) Installation pour rafraîchir des produits en présence d'une couche de glace
FR2980956A1 (fr) Systeme ameliorant les problemes de givrage dans les tunnels de surgelation par impaction
FR2793005A1 (fr) Procede et appareil de refroidissement en continu d'un produit au moyen d'un fluide cryogenique
FR2711975A1 (fr) Appareil à cuve fixe pourvue dans son fond de moyens de transport et procédé pour égoutter la vendange avec un tel appareil.
CH637757A5 (en) Refrigeration enclosure
EP1543749A1 (de) Kühltheke

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20021212

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

17Q First examination report despatched

Effective date: 20040326

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20050411