EP0831290A2 - Thin-layer cooler - Google Patents

Thin-layer cooler Download PDF

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Publication number
EP0831290A2
EP0831290A2 EP97113880A EP97113880A EP0831290A2 EP 0831290 A2 EP0831290 A2 EP 0831290A2 EP 97113880 A EP97113880 A EP 97113880A EP 97113880 A EP97113880 A EP 97113880A EP 0831290 A2 EP0831290 A2 EP 0831290A2
Authority
EP
European Patent Office
Prior art keywords
rotor
stator
gap
thin
film cooler
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Withdrawn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
EP97113880A
Other languages
German (de)
French (fr)
Other versions
EP0831290A3 (en
Inventor
Wolfgang Dipl.-Ing. Jehle
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.)
Gebr Bauermeister & Co Verfahrenstechnik & Co GmbH
Original Assignee
Gebr Bauermeister & Co Verfahrenstechnik & Co GmbH
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 Gebr Bauermeister & Co Verfahrenstechnik & Co GmbH filed Critical Gebr Bauermeister & Co Verfahrenstechnik & Co GmbH
Publication of EP0831290A2 publication Critical patent/EP0831290A2/en
Publication of EP0831290A3 publication Critical patent/EP0831290A3/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D11/00—Heat-exchange apparatus employing moving conduits
    • F28D11/02—Heat-exchange apparatus employing moving conduits the movement being rotary, e.g. performed by a drum or roller

Definitions

  • the invention relates to a thin film cooler according to the Preamble of claim 1.
  • Such thin film coolers are in a wide variety Refinements known. They are not just used as heat exchangers in the production of fatty foods, but also for processing and manufacturing the following Fabrics used: chocolate and cocoa masses, fat glaze and cocoa butter, peanut butter, nut and almond masses, Fruit juices, spirits, creams and cosmetics, Products of the chemical and pharmaceutical industry, Varnishes, paints and waxes, lubricating oils and greases, monomeric and polymeric liquid plastics.
  • the invention has for its object a thin film cooler of the type mentioned at the outset without Scraper gets along and yet with a high efficiency and a long lifespan works. This release is basically by the characterizing part of claim 1 solved.
  • FIG. 1 An embodiment is shown schematically in the single figure of a thin film cooler. This consists of a vertically arranged, double-walled cooling cylinder, which forms the stator 1. The stator 1 is at the top the bearing 4 for the rotor 2 carrying cover plate 14 Mistake.
  • stator 1 rotates the rotor 2, which with the help of Bearing 4 and its drive shaft 16 is overhung.
  • the drive takes place with the help of an electric motor Gear 6, possibly also with direct drive (servo motors or frequency controlled drive motors).
  • the cooling tube 5 leads into the interior of the Rotor 2.
  • the cooling tube 5 At the upper end of the cooling tube 5 is one Rotary connection 7 arranged through which the coolant inflow can be switched on and off.
  • the coolant inlet is designated 12 and the coolant outlet 13.
  • the stator 1 forms a double-walled housing, in the Interior with 10 coolants and with 11 coolants is dissipated. In the lower area is the cooling cylinder forming stator 1 at 15 conical.
  • the product to be cooled and treated occurs at 8 and off again at 9.
  • the product flows through the gap 3 between the rotor and Stator and is used with a wear-resistant, inorganic Cooled non-stick coating.
  • a wear-resistant, inorganic Cooled non-stick coating is preferred here used on the basis of metal / metal oxide.
  • the cooling effect can be controlled by regulating the flow and the temperature of the coolant ( ⁇ ).
  • heating of the product can a means of heating instead of the coolant be fed.

Abstract

The cooler has a cooling cylinder forming a stator (1) in which a slowly rotating rotor (2) is mounted so as to be rotatably driven. There is a gap (3) between the rotor and stator. The surfaces of the rotor and stator bounding the gap are coated with a wear-resistant, non-organic anti-stick surface. The anti-stick coating is based on a metal or metal oxide. The width of the gap is between 5 and 15 mm.

Description

Die Erfindung betrifft einen Dünnschichtkühler nach dem Oberbegriff des Anspruches 1.The invention relates to a thin film cooler according to the Preamble of claim 1.

Derartige Dünnschichtkühler sind in den unterschiedlichsten Ausgestaltungen bekannt. Sie werden nicht nur als Wärmetauscher bei der Herstellung von fetthaltigen Nahrungsmitteln, sondern auch zur Bearbeitung und Herstellung folgender Stoffe eingesetzt: Schokoladen- und Kakaomassen, Fettglasur und Kakaobutter, Erdnussbutter, Nuss- und Mandelmassen, Fruchtsäften, Spirituosen, Cremes und Kosmetika, Produkte der chemischen und pharmazeutischen Industrie, Lacke, Farben und Wachse, Schmieröle und Schmierfette, monomere und polymere flüssige Kunststoffe.Such thin film coolers are in a wide variety Refinements known. They are not just used as heat exchangers in the production of fatty foods, but also for processing and manufacturing the following Fabrics used: chocolate and cocoa masses, fat glaze and cocoa butter, peanut butter, nut and almond masses, Fruit juices, spirits, creams and cosmetics, Products of the chemical and pharmaceutical industry, Varnishes, paints and waxes, lubricating oils and greases, monomeric and polymeric liquid plastics.

Die Anwendungsgebiete sind vielschichtig. Bei den bekannten Wärmetauschern besteht die Gefahr, daß sich das Produkt an den Wandungen des Rotors und des Stators aufbaut. Das geschieht durch Separation von Feststoffen von den Flüssigbestandteilen bei Mischungen oder Viskositätsänderungen. Bei fetthaltigen Gemischen bilden sich Fettkristalle an den Wandungen. Dadurch wird der Wärmeübergang laufend schlechter. Es kann sogar zu Verstopfungen kommen. Bekannt ist es, die Krusten durch Abstreifer laufend mechanisch zu entfernen. Dieses bedeutet einen höheren maschinellen Aufwand. Die Abstreifer und die Wandungen vom Rotor verschleissen. Es kommt zu Maschinenstillständen. Weiterhin liegt ein höherer Energieverbrauch vor.The areas of application are multifaceted. With the known There is a risk that the product will adhere to heat exchangers builds up the walls of the rotor and the stator. The happens by separating solids from the liquid components in the case of mixtures or changes in viscosity. With fat-containing mixtures, fat crystals form on the Walls. As a result, the heat transfer is getting worse. Constipation can even occur. It is known removing the crusts mechanically by wipers. This means a higher mechanical effort. Wear the wipers and the walls of the rotor. Machine downtimes occur. There is also a higher energy consumption.

Der Erfindung liegt die Aufgabe zugrunde, einen Dünnschichtkühler der eingangs genannten Art zu schaffen, der ohne Abstreifer auskommt und dennoch mit einem hohen Wirkungsgrad und einer langen Lebensdauer arbeitet. Diese Augabe wird grundsätzlich durch das Kennzeichen des Anspruches 1 gelöst.The invention has for its object a thin film cooler of the type mentioned at the outset without Scraper gets along and yet with a high efficiency and a long lifespan works. This release is basically by the characterizing part of claim 1 solved.

Dadurch, daß die verschleissfeste, anorganische Antihaftbeschichtung an den entsprechenden Flächen, die den Spalt zwischen Rotor und Stator begrenzen, vorgesehen ist, wird praktisch ein Verkrusten und ein Absetzen von Produktbestandteilen vermieden. Das Material weist eine hohe Abriebfestigkeit und eine völlige Geschmacksneutralität auf. Letzteres ist insbesondere bei der Behandlung von Nahrungsmitteln wichtig.The fact that the wear-resistant, inorganic non-stick coating on the corresponding surfaces that make up the gap limit between the rotor and stator is provided practically a crusting and deposition of product components avoided. The material has high abrasion resistance and a completely neutral taste. The latter is particularly true in the treatment of food important.

In den Unteransprüchen sind vorteilhafte Ausgestaltungen unter Schutz gestellt.Advantageous refinements are in the subclaims put under protection.

Grundsätzlich ist es auch möglich, den Dünnschichtkühler zum Erwärmen entsprechender Produkte einzusetzen (Anspruch 7).In principle, it is also possible to use the thin film cooler used to heat corresponding products (claim 7).

Im folgenden wird die Erfindung unter Hinweis auf die Zeichnung anhand eines Ausführungsbeispieles erläutert. In the following the invention with reference to the Drawing explained using an exemplary embodiment.

In der einzigen Figur ist schematisch eine Ausführungsform eines Dünnschichtkühlers dargestellt. Dieser besteht aus einem vertikal angeordneten, doppelwandigen Kühlzylinder, der den Stator 1 bildet. Der Stator 1 ist oben mit einer die Lager 4 für den Rotor 2 tragenden Abdeckplatte 14 versehen.An embodiment is shown schematically in the single figure of a thin film cooler. This consists of a vertically arranged, double-walled cooling cylinder, which forms the stator 1. The stator 1 is at the top the bearing 4 for the rotor 2 carrying cover plate 14 Mistake.

In dem Stator 1 rotiert der Rotor 2, der mit Hilfe der Lager 4 und seiner Antriebswelle 16 fliegend gelagert ist. Der Antrieb erfolgt mit Hilfe eines Elektromotors über ein Getriebe 6, evtl. auch mit Direktantrieb (Stellmotore oder frequenzgesteuerte Antriebsmotore).In the stator 1 rotates the rotor 2, which with the help of Bearing 4 and its drive shaft 16 is overhung. The drive takes place with the help of an electric motor Gear 6, possibly also with direct drive (servo motors or frequency controlled drive motors).

Durch den Hohlraum 17, der als Hohlwelle 16 ausgebildeten Antriebswelle, führt das Kühlrohr 5 in den Innenraum des Rotors 2. An dem oberen Ende des Kühlrohres 5 ist eine Drehverbindung 7 angeordnet, durch die der Kühlmittelzufluss ein- und ausgeschaltet werden kann. Der Kühlmitteleintritt ist mit 12 und der Kühlmittelaustritt mit 13 bezeichnet.Through the cavity 17, which is designed as a hollow shaft 16 Drive shaft, the cooling tube 5 leads into the interior of the Rotor 2. At the upper end of the cooling tube 5 is one Rotary connection 7 arranged through which the coolant inflow can be switched on and off. The coolant inlet is designated 12 and the coolant outlet 13.

Der Stator 1 bildet ein doppelwandiges Gehäuse, in dessen Innenraum bei 10 Kühlmittel zu- und bei 11 Kühlmittel abgeführt wird. Im unteren Bereich ist der den Kühlzylinder bildende Stator 1 bei 15 konisch ausgebildet.The stator 1 forms a double-walled housing, in the Interior with 10 coolants and with 11 coolants is dissipated. In the lower area is the cooling cylinder forming stator 1 at 15 conical.

Das zu kühlende und zu behandelnde Produkt tritt bei 8 ein und bei 9 wieder aus.The product to be cooled and treated occurs at 8 and off again at 9.

Das Produkt strömt durch den Spalt 3 zwischen Rotor und Stator und wird an den mit einer verschleissfesten, anorganischen Antihaftbeschichtung versehenen Beschichtung gekühlt. Vorzugsweise wird hier als Beschichtung eine solche auf der Basis von Metall/Metalloxid eingesetzt. Durch diese Beschichtung wird vermieden, dass das zu kühlende Produkt sich absetzt oder verkrustet. Das Produkt wird an den beschichteten Flächen gekühlt und nimmt eine niedrigere Temperatur und damit im allgemeinen eine höhere Viskosität an. Der Kühleffekt lässt sich durch die Regelung des Förderstromes und Temperierung des Kühlmittels (±) beeinflussen.The product flows through the gap 3 between the rotor and Stator and is used with a wear-resistant, inorganic Cooled non-stick coating. Such a coating is preferred here used on the basis of metal / metal oxide. Through this Coating is avoided that the product to be cooled settles or crusts. The product is coated on the Cooled surfaces and takes a lower temperature and thus generally a higher viscosity. The cooling effect can be controlled by regulating the flow and the temperature of the coolant (±).

Wenn eine Erwärmung des Produktes gewünscht wird, kann anstelle des Kühlmittels auch ein Mittel zum Erwärmen zugeführt werden. Als Kühlmittel kommt Wasser oder auch ein anderes Kühlmittel, z.B. eine Sole, infrage.If heating of the product is desired, can a means of heating instead of the coolant be fed. Water or comes in as a coolant other coolant, e.g. a brine, in question.

Claims (7)

Dünnschichtkühler für niedrig- bis mittelviskose Stoffe, insbesondere fetthaltige Nahrungsmittel, mit einem einen Stator (1) bildenden Kühlzylinder, in dem ein langsam laufender Rotor (2) drehangetrieben gelagert ist, wobei zwischen Rotor und Stator ein Spalt (3) vorgesehen ist, dadurch gekennzeichnet, dass die den Spalt (3) begrenzenden Flächen des Rotors (2) und des Stators (1) mit einer verschleissfesten, anorganischen Antihaftbeschichtung versehen sind.Thin film cooler for low to medium viscosity Substances, especially fatty foods, with a cooling cylinder forming a stator (1), in which a slow-running rotor (2) is rotatably mounted, a gap (3) being provided between the rotor and the stator , characterized in that the gap (3) delimiting Surfaces of the rotor (2) and the stator (1) with one wear-resistant, inorganic non-stick coating are provided. Dünnschichtkühler nach Anspruch 1, dadurch gekennzeichnet, dass es sich bei der Antihaftbeschichtung um eine solche auf der Basis von Metall/Metalloxid handelt.Thin-film cooler according to claim 1, characterized in that the non-stick coating is one based on metal / metal oxide. Dünnschichtkühler nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Spalt (3) 5 bis 15 mm breit ist.Thin-film cooler according to claim 1 or 2, characterized in that the gap (3) 5 to 15 mm is wide. Dünnschichtkühler nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Mantelfläche des Rotors (2) im Spalt (3) als ein- oder mehrgängige Schnecke ausgebildet ist.Thin-film cooler according to claim 1 or 2, characterized in that the outer surface of the rotor (2) in the gap (3) designed as a single or multi-flight screw is. Dünnschichtkühler nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Rotor (2) fliegend gelagert ist.Thin film cooler after one or more of the preceding claims, characterized in that the rotor (2) is overhung. Dünnschichtkühler nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Antriebswelle des Rotors (2) als Hohlwelle (16) ausgebildet ist, durch die das Rohr (5) zur Zuführung des Kühlmittels führt.Thin film cooler according to one or more of the preceding claims, characterized in that the Drive shaft of the rotor (2) designed as a hollow shaft (16) through which the pipe (5) for supplying the coolant leads. Dünnschichtkühler nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass anstelle des Kühlmittels ein Mittel zum Erwärmen zuführbar ist.Thin film cooler according to one or more of the preceding claims, characterized in that instead a means for heating can be supplied to the coolant.
EP97113880A 1996-08-17 1997-08-12 Thin-layer cooler Withdrawn EP0831290A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29614250U 1996-08-17
DE29614250U DE29614250U1 (en) 1996-08-17 1996-08-17 Thin film cooler

Publications (2)

Publication Number Publication Date
EP0831290A2 true EP0831290A2 (en) 1998-03-25
EP0831290A3 EP0831290A3 (en) 1999-06-23

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ID=8027951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97113880A Withdrawn EP0831290A3 (en) 1996-08-17 1997-08-12 Thin-layer cooler

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EP (1) EP0831290A3 (en)
JP (1) JPH10160365A (en)
DE (1) DE29614250U1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002014757A1 (en) * 2000-08-11 2002-02-21 Paul Mueller Company Bimetallic tube in a heat exchanger of an ice making machine
NL1024996C2 (en) * 2003-12-11 2005-06-14 Campina Bv Cooler for a food.
DE102005017327A1 (en) * 2005-04-14 2006-10-26 EKATO Rühr- und Mischtechnik GmbH processing plant
WO2008106706A1 (en) * 2007-03-07 2008-09-12 Agrana Beteiligungs-Aktiengesellschaft Method for solidifying a liquid chocolate mass

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140281A1 (en) * 1983-10-18 1985-05-08 Apv Crepaco Inc. Vertically extending heat exchanger
EP0250622A1 (en) * 1986-06-27 1988-01-07 John Labatt Limited Fluid food process
WO1992001899A1 (en) * 1990-07-16 1992-02-06 Beckswift Limited Heat exchange apparatus
EP0719594A1 (en) * 1994-12-27 1996-07-03 Stefan Hort Process for coating an object, in particular kitchen utensils, and objects coated in this way

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1086210B (en) * 1959-05-21 1960-08-04 Basf Ag Device for heating heat-sensitive, liquid or dissolved substances that tend to crust on the heating surface
JPS5858155B2 (en) * 1976-11-08 1983-12-23 シャープ株式会社 How to form a coating on a cooker
SE458717B (en) * 1986-11-17 1989-04-24 Sandvik Ab CYLINDER FOR HEAT EXCHANGE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140281A1 (en) * 1983-10-18 1985-05-08 Apv Crepaco Inc. Vertically extending heat exchanger
EP0250622A1 (en) * 1986-06-27 1988-01-07 John Labatt Limited Fluid food process
WO1992001899A1 (en) * 1990-07-16 1992-02-06 Beckswift Limited Heat exchange apparatus
EP0719594A1 (en) * 1994-12-27 1996-07-03 Stefan Hort Process for coating an object, in particular kitchen utensils, and objects coated in this way

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch, Week 7827 Derwent Publications Ltd., London, GB; Class A14, AN 78-48448A XP002101372 & JP 53 058544 A (SHARP KK), 26. Mai 1978 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002014757A1 (en) * 2000-08-11 2002-02-21 Paul Mueller Company Bimetallic tube in a heat exchanger of an ice making machine
US6477846B2 (en) 2000-08-11 2002-11-12 Paul Mueller Company Bimetallic tube in a heat exchanger of an ice making machine
NL1024996C2 (en) * 2003-12-11 2005-06-14 Campina Bv Cooler for a food.
WO2005057117A1 (en) * 2003-12-11 2005-06-23 Campina B.V. Method for preparing a foodstuff
DE102005017327A1 (en) * 2005-04-14 2006-10-26 EKATO Rühr- und Mischtechnik GmbH processing plant
DE102005017327B4 (en) * 2005-04-14 2007-08-30 EKATO Rühr- und Mischtechnik GmbH processing plant
WO2008106706A1 (en) * 2007-03-07 2008-09-12 Agrana Beteiligungs-Aktiengesellschaft Method for solidifying a liquid chocolate mass

Also Published As

Publication number Publication date
JPH10160365A (en) 1998-06-19
DE29614250U1 (en) 1998-07-16
EP0831290A3 (en) 1999-06-23

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