EP1151836B1 - Fliehkraftschneidemaschine mit Kühlanlage, sowie Verfahren zum Kühlen von geschnittenen Produkten - Google Patents

Fliehkraftschneidemaschine mit Kühlanlage, sowie Verfahren zum Kühlen von geschnittenen Produkten Download PDF

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Publication number
EP1151836B1
EP1151836B1 EP01401003A EP01401003A EP1151836B1 EP 1151836 B1 EP1151836 B1 EP 1151836B1 EP 01401003 A EP01401003 A EP 01401003A EP 01401003 A EP01401003 A EP 01401003A EP 1151836 B1 EP1151836 B1 EP 1151836B1
Authority
EP
European Patent Office
Prior art keywords
casing
injection
cutter according
cutter
products
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 - Lifetime
Application number
EP01401003A
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English (en)
French (fr)
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EP1151836A1 (de
Inventor
Olivier Pouchain
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
Air Liquide SA
LAir Liquide SA a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude
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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 EP1151836A1 publication Critical patent/EP1151836A1/de
Application granted granted Critical
Publication of EP1151836B1 publication Critical patent/EP1151836B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0691—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/02—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a stationary cutting member
    • B26D1/03—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a stationary cutting member with a plurality of cutting members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/10—Means for treating work or cutting member to facilitate cutting by heating

Definitions

  • the invention relates to a centrifugal cutter, in particular for food products, of the type comprising a product drive turbine driven in rotation about a substantially vertical axis, a fixed cutting head substantially cylindrical arranged coaxially around the turbine, and a casing surrounding the turbine and the cutting head, the housing having a feed opening in uncut products on its upper part, and an outlet opening for cut products on its lower part, the cutting head dividing the space defined by the casing in a space of uncut products and in a space of cut products.
  • Such a cutter generally comprises a turbine which is constituted a disc with vertical axis, disc on which protrude up the walls coaches which extend radially inward from the circumference of the disk.
  • the turbine is rotated by a gear motor.
  • a centrifugal cutter further includes a cylindrical cutting head arranged coaxially around the turbine.
  • the cutting head has slots radial which extend over the entire height of the turbine. Blades are mounted tangentially to the slots and protrude slightly inward.
  • the turbine and the cutting head are surrounded by a housing comprising a feed opening at its upper end, and an outlet opening at its lower end.
  • the cutter is supplied with food product.
  • This food product falls on the disc, is driven radially outward by centrifugal force, is pressed against the blades by the driving walls, and the blade cuts the product into pieces.
  • the pieces then fall through the outlet opening, for example on a conveyor.
  • Centrifugal cutters have the disadvantage of heating strongly locally the periphery of the product when cutting. This effect generates disadvantages such as bacteria growth or lumps cut.
  • the invention aims to overcome the aforementioned drawbacks and to propose a centrifugal cutter which effectively reduces the heating effect device.
  • the invention relates to a centrifugal cutter of the type above, characterized in that the centrifugal cutter further comprises at least a device for injecting a cryogenic liquid into the space of the cut products and in that the direction of injection of the injection device is directed substantially horizontally and against the current with respect to the direction of rotation of the turbine.
  • the invention also relates to a method of cooling products cut by a centrifugal cutter as defined above, characterized
  • the gas is evacuated cryogenic, formed during injection, towards the top of the casing.
  • FIG. 1 a centrifugal cutter 2 is shown according to the invention.
  • the centrifugal cutter 2 comprises a casing 4 containing a mechanism cutting 6. It further comprises a housing 8 comprising a gear motor 10 to which is connected a control and current supply device 12.
  • the casing 4 comprises a lower part 14 of frustoconical shape with an axis vertical X-X, tapering down and which is removably attached to the housing 8 of the gear motor 10.
  • the lower part 14 of the casing is open downwards at 15 to allow the cut product to exit.
  • the cutter 2 can have an outlet hopper 16 fixed below the outlet opening 15, and narrowing towards a conveying station 18 arranged below.
  • a part upper case 20 is separably arranged on the lower part 14 and associated with a known safety device 21.
  • the upper part 20 of the housing comprises a supply tube 22 for uncut product provided with a protective grid 24 of classic hand.
  • the wall 26 of the housing 4 is constituted a double envelope formed by two walls 28 made of stainless steel sheet between which a thermally insulating layer 30 is incorporated plastic foam.
  • the cutting mechanism 6 comprises a turbine 32 comprising a disc 34 with vertical axis coinciding with the axis X-X of the casing 4.
  • Walls coaches 36 protrude upward on the upper surface of the disc 34. They are arranged on the circumference of the disc 34 and extend radially inward. The upper ends of the walls coaches 36 are connected to an annular disc 38 and are thus fixed the to each other.
  • the underside of the disc 34 is integral with a toothed wheel bevel 40 which cooperates with a bevel pinion 42 output from the gear motor.
  • the bevel gear 42 is connected to the gear motor 10 by a shaft 44 which is surrounded by a protective tube 46 secured to the housing 8.
  • the assembly turbine 32 and bevel gear 40 is mounted in vertical rotation on a level 48.
  • a cylindrical cutting head 50 is arranged coaxially around of the turbine 32, separating the enclosure of the casing 4 into a product space uncut 52 and a cut product space 54.
  • the cutting head 50 has radial slots extending substantially over the entire length of the turbine.
  • Cutting blades 56 are mounted on the cutting head in the slits, conventionally.
  • the cutting head 50 is held by a support (not shown) fixed on the lower casing 14.
  • the centrifugal cutter 2 further comprises two devices 58, 59 for injecting a cryogenic liquid into the lower casing 14 (see FIG. 3).
  • the two injection devices 58, 59 of cryogenic liquid are known for example from European patent application EP-A-744 578. They each essentially comprise a ball valve 60 connected by a quick release connector 62 to a nozzle Injection valve 64.
  • the ball valve 60 is connected in this example to a source 66 of liquid CO 2 under pressure by a line 68 and controlled by an electro-pneumatic actuator 70 connected to the control device by a control line 72 , 73 respectively.
  • the injection nozzle 64 is surrounded by a thermally insulating sleeve 74.
  • injection devices 58, 59 are arranged such that their injection directions D1, D2 are directed substantially tangentially to the circular circumference of the lower case 14.
  • the directions of injection D1, D2 of the two injection devices 58, 59 are directed in the opposite direction to the drive shaft 44 of the gear motor 10, in order to avoid agglomeration of the dry ice and the product cut on the protective tube 46 of the drive shaft.
  • the injection direction of the injection device 59 is directed against the direction of rotation R of the turbine 32, while that of the injection device 58 is directed in this direction of rotation.
  • a gas evacuation device 80 is connected to the supply tube 22 of the upper casing.
  • a temperature sensor 82 is arranged on the side inside the lower additional hopper 16 in order to detect the outlet temperature. This sensor 82 is connected to the control device 12 by a sensor line 84.
  • the temperature sensor can be placed at other locations, for example above the turbine 32.
  • the centrifugal cutter according to the invention works in the same way next.
  • the control device 12 monitors, via the sensor 82, the temperature prevailing in the hopper or in the casing 4 of the cutter.
  • the temperature is higher than a predetermined temperature, for example higher than -15 ° C
  • the injection of liquid CO 2 is started by the control device 12.
  • the injection of CO 2 is carried out by short injection cycles / break.
  • the CO 2 is relaxed, and it turns into carbon dioxide snow which is projected onto the wall 26 of the casing 4. Thanks to the tangential injection, a “mist” of snow and carbon dioxide is formed inside the casing.
  • the centrifugal cutter 2 the product is cut by the cutting head 50, and falls through the mist. The latter immediately and uniformly sells its frigories to the finely dispersed cut product in the space of the cut products 54 of the casing.
  • the peripheral warming effect is thus greatly reduced as well as the formation of residual lumps of dry ice.
  • the fact that the injection is done against the current by at least one injection device 59 helps in the distribution of dry ice inside casing 4 and further improves the efficiency of the cooling process.
  • the cut and cooled food product then falls on the conveying 18 and can be conditioned with a reduced risk of caking.
  • cryogenic gas inert the enclosure of the casing 4 and avoids suction through the lower opening 15 of the air housing driven by the rotation of the turbine 32 and by the evacuation device 80. This avoids the heating of the product by the aspirated air. Additionally, the repression of cryogenic gas to the supply tube 22 increases the exchanges and cools the product before cutting at this location.
  • the carbon dioxide is sucked in by the suction device 80 and driven back outside the manufacturing building to avoid any danger staff suffocation.
  • the centrifugal cutter can also be equipped with a single cryogenic liquid injection device 59.
  • the device injection 59 is arranged so as to inject against the rotation of the turbine 32 and on the opposite side of the drive shaft 44.
  • liquid nitrogen can also be used for cooling.
  • injection devices can also be retrofitted on existing and already existing centrifugal cutters installed in a production line.
  • the injection devices are inexpensive, inexpensive bulky and do not lengthen the production line.
  • the operation of the devices is safe and reliable.
  • the cutter according to the invention can be used to produce the following food products: flat or wavy cut apples, walnuts, chopped cabbage, grated carrots, potatoes, hard and soft grated cheeses and meat matches. This list is not of course not exhaustive.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Claims (13)

  1. Zentrifugalschneidmaschine, insbesondere für Nahrungsmittel, des Typs, der eine Antriebsturbine (32), die in Drehung um eine im Wesentlichen vertikale Achse (X-X) angetrieben wird, zum Mitnehmen von Produkten, einen im Wesentlichen zylindrischen stationären Schneidkopf (50), der koaxial um die Turbine (32) angeordnet ist, und ein Gehäuse (4) umfasst, das die Turbine (32) und den Schneidkopf (50) umgibt, wobei das Gehäuse (4) auf seinem oberen Teil eine Zuführöffnung für nicht geschnittene Produkte und auf seinem unteren Teil eine Ausgangsöffnung (15) für geschnittene Produkte umfasst, wobei der Schneidkopf (50) den durch das Gehäuse (4) definierten Raum in einen Raum der ungeschnittenen Produkte (52) und einen Raum der geschnittenen Produkte (54) unterteilt, dadurch gekennzeichnet, dass die Zentrifugalschneidmaschine (2) ferner mindestens ein Einspritzmittel (58, 59) einer kryogenen Flüssigkeit in den Raum der geschnittenen Produkte (54) umfasst, wobei die Einspritzrichtung (D2) der Einspritzvorrichtung (59) im Wesentlichen horizontal und im Gegenstrom zur Drehrichtung (R) der Turbine (32) gerichtet ist.
  2. Schneidmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Gehäuse (4) einen im Wesentlichen kreisförmigen Querschnitt hat, und dadurch, dass die Einspritzrichtung der Einspritzvorrichtung (58, 59) im Wesentlichen tangential zu diesem kreisförmigen Querschnitt gerichtet ist.
  3. Schneidmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie eine zweite Einspritzvorrichtung umfasst, die auf der Seite des Gehäuses (4) gegenüber der ersten Einspritzvorrichtung (59) eingerichtet ist, und dadurch, dass die Einspritzrichtung (D1) der zweiten Einspritzvorrichtung (58) im Gegenstrom zur Drehrichtung (R) der Turbine (32) ist.
  4. Schneidmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Einspritzstelle der Einspritzvorrichtung (58, 59) unter der Ebene liegt, die von der unteren Endfläche des Schneidkopfs (50) festgelegt wird.
  5. Schneidmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gehäuse (4) im Wesentlichen auf seiner ganzen Fläche eine Wärmeisolierung (28, 30) umfasst.
  6. Schneidmaschine nach Anspruch 5, dadurch gekennzeichnet, dass die Wärmeisolierung einen Doppelmantel umfasst, der aus zwei Wänden aus nicht rostendem Stahl (28) und einer Schicht aus Kunststoffschaumstoff (30) besteht, die zwischen den zwei Wänden (28) des Doppelmantels angeordnet ist.
  7. Schneidmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie ferner eine Entleerungsvorrichtung (80) des beim Einspritzen gebildeten kryogenen Gases umfasst, die mit dem Gehäuse (4) verbunden ist.
  8. Schneidmaschine nach Anspruch 7, dadurch gekennzeichnet, dass die Entleerungsvorrichtung (80) auf dem oberen Ende (22) des Gehäuses angeordnet ist.
  9. Schneidmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie ferner einen Temperaturfühler (82) umfasst, der eine Temperatur misst, die der Temperatur im Inneren des Gehäuses (4) entspricht, und dadurch, dass sie ferner eine Steuervorrichtung (12) umfasst, die mit dem Temperaturfühler (82) und mit der Einspritzvorrichtung (58, 59) verbunden ist, wobei die Steuervorrichtung (12) die Einspritzvorrichtung (58, 59) in Abhängigkeit von der Temperatur, die von dem Temperaturfühler (82) gemessen wird, steuert.
  10. Schneidmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die kryogene Flüssigkeit Flüssig-CO2 oder Flüssigstickstoff ist.
  11. Schneidmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Einspritzvorrichtung einen Absperrschieber (60) umfasst, der in eine Einspritzdüse (64) mündet, die mit dem Gehäuse (4) verbunden ist, wobei der Schieber ferner mit einer Quelle kryogener Flüssigkeit unter Druck (66) verbunden ist und durch einen Antrieb, insbesondere einen elektropneumatischen (70) betätigt wird.
  12. Kühlverfahren für Nahrungsmittel, die von einer Zentrifugalschneidmaschine nach einem der vorhergehenden Ansprüche fein geschnitten sind, dadurch gekennzeichnet, dass man in den Raum der geschnittenen Produkte (54) des Gehäuses (4) der Zentrifugalschneidmaschine (2) kryogene Flüssigkeit einspritzt, wobei mindestens ein Teil der kryogenen Flüssigkeit im Gegenstrom zur Drehrichtung (R) der Turbine (32) der Zentrifugalschneidmaschine (2) eingespritzt wird.
  13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass man das kryogene Gas, das sich bei der Einspritzung bildet, zur Oberseite des Gehäuses (4) ableitet.
EP01401003A 2000-05-03 2001-04-19 Fliehkraftschneidemaschine mit Kühlanlage, sowie Verfahren zum Kühlen von geschnittenen Produkten Expired - Lifetime EP1151836B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0005644 2000-05-03
FR0005644A FR2808468B1 (fr) 2000-05-03 2000-05-03 Coupeuse centrifuge equipee d'un dispositif de refroidissement, et procede de refroidissement correspondant

Publications (2)

Publication Number Publication Date
EP1151836A1 EP1151836A1 (de) 2001-11-07
EP1151836B1 true EP1151836B1 (de) 2004-10-20

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EP01401003A Expired - Lifetime EP1151836B1 (de) 2000-05-03 2001-04-19 Fliehkraftschneidemaschine mit Kühlanlage, sowie Verfahren zum Kühlen von geschnittenen Produkten

Country Status (7)

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EP (1) EP1151836B1 (de)
AT (1) ATE280016T1 (de)
AU (1) AU770774B2 (de)
DE (1) DE60106512T2 (de)
ES (1) ES2230245T3 (de)
FR (1) FR2808468B1 (de)
NZ (1) NZ511484A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201200288A (en) * 2010-05-27 2012-01-01 Air Prod & Chem Apparatus and method for providing a temperature-controlled gas

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE653098C (de) * 1935-09-17 1937-11-15 Wilhelm Ehlert Vorrichtung zur Zufuehrung von Schwefeldioxyd zu Zuckerruebenschnitzelmaschinen
FR2541869B1 (fr) * 1983-03-02 1987-03-20 Adeco Expl Ets Machine a raper un produit sous forme de filaments
DE19846876A1 (de) * 1998-10-13 2000-04-20 Hermann Hohenester Verfahren und Vorrichtung zum Standardisieren von Fleisch

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Publication number Publication date
NZ511484A (en) 2003-01-31
DE60106512T2 (de) 2005-11-24
FR2808468A1 (fr) 2001-11-09
DE60106512D1 (de) 2004-11-25
ES2230245T3 (es) 2005-05-01
FR2808468B1 (fr) 2002-06-28
AU4029801A (en) 2001-11-08
EP1151836A1 (de) 2001-11-07
AU770774B2 (en) 2004-03-04
ATE280016T1 (de) 2004-11-15

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