WO1987004902A1 - Dispositif pour chauffer par conduction des produits coulants - Google Patents

Dispositif pour chauffer par conduction des produits coulants Download PDF

Info

Publication number
WO1987004902A1
WO1987004902A1 PCT/DE1987/000060 DE8700060W WO8704902A1 WO 1987004902 A1 WO1987004902 A1 WO 1987004902A1 DE 8700060 W DE8700060 W DE 8700060W WO 8704902 A1 WO8704902 A1 WO 8704902A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrodes
tube
pairs
section
electrode
Prior art date
Application number
PCT/DE1987/000060
Other languages
German (de)
English (en)
Inventor
Helmut Schaefer
Manfred Rudolph
Walter Reitler
Original Assignee
Finnah 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 Finnah Gmbh filed Critical Finnah Gmbh
Publication of WO1987004902A1 publication Critical patent/WO1987004902A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
    • A23C3/00—Preservation of milk or milk preparations
    • A23C3/02—Preservation of milk or milk preparations by heating
    • A23C3/03—Preservation of milk or milk preparations by heating the materials being loose unpacked
    • A23C3/033—Preservation of milk or milk preparations by heating the materials being loose unpacked and progressively transported through the apparatus
    • A23C3/0335—Preservation of milk or milk preparations by heating the materials being loose unpacked and progressively transported through the apparatus the milk being heated by electrical or mechanical means, e.g. by friction
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/005—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment

Definitions

  • the present invention relates to a device with the features of the preamble of claim 1.
  • Such conductive heating is of particular advantage because of its direct heat generation inside the fabric where heat transfer from the outside, e.g. from a hotplate to the fabric due to local overheating Decomposition and the like.
  • the tube is a connection between a first container to be filled with milk and a second container which collects the milk that has flowed through the tube. With its ends, this tube is immersed in the milk in the respective container.
  • the walls of the two containers are called the respective electrodes used for the two power connections, namely as electrodes, from which the electrical current of the milk is supplied or removed from it.
  • This known device has the advantage in itself that it has large electrode areas, so that there is a small area-specific load on the electrodes and especially on the milk located in the vicinity of the electrodes. Because, on the other hand, inevitably electric current also comes through substantial portions of each
  • sensitive goods are understood to mean such substances, in particular foodstuffs, which show the tendency to undergo inadmissible and / or at least undesirable changes in quality, particularly with indirect heating.
  • Typical examples of such goods which are sensitive in the sense of the invention are the already mentioned milk, egg products and other protein products and the like.
  • Fruit juices, vegetable juices and the like are also suitable here.
  • a starting point for the train of thought that led to the invention was to carry out such heating processes as economically as possible and to achieve particularly gentle heating of the goods.
  • Such heating measures for processing and / or preparation or for the preservation of food and the like are of particular interest.
  • Food preparation it is important, among other things, to avoid undesirable changes in taste, to prevent the formation of harmful by-products and the like.
  • Food preservation is about killing unwanted microorganisms, inactivating enzymes and the like. Bacteria, bacterial spores, yeasts, molds, viruses and bacteriophages can be rendered harmless by heating to temperatures between 60 to 70 ° C or by heating to 140 ° C.
  • the device according to the invention is not only useful for milk and mole kereier products, liquid egg products and the like. It also applies to the application of the device according to the invention for the heating of fruit juices and fruit juice products, vegetable juices and vegetable juice products, beer and wine and the like. Mixed goods in pumpable condition are also included. Another area of application of the invention is the preparation of warm drinks such as coffee, tea, cocoa and mulled wine as well as soups etc.
  • a particularly advantageous further embodiment viewed parallel to the tube axis, is to arrange a plurality of mutually separate electrode pairs one behind the other, ie to let the flowing material pass through the field of respective electrode pairs in succession.
  • the pairs of electrodes arranged in succession are preferably oriented such that their respective field orientations are at an angle, preferably 90 ° or 120 °, to one another.
  • a predefinable proportioning of the axial heat generation can be effected, namely realizing such a distribution of the heat generation that the tube enters at rapid warming to the end temperature and this end temperature over a required period of time to maintain this end temperature long way within the flowed tube.
  • Different length of the electrodes or pairs of electrodes is the preferred parameter for different dimensions of the respective electrode surface.
  • a tube with a cross section without corners and without dead spaces is provided for the device according to the invention. Such conditions are met not only by a round pipe cross section but also an essentially flat round cross section or partially flattened round cross section.
  • the latter forms are particularly suitable for plate-shaped electrodes and for the formation of a particularly homogeneous field. Excellent results can also be achieved with the curvature of the tube wall, which is adapted to cylindrically curved electrodes.
  • Such an embodiment is also suitable for the invention, which has two coaxial cylindrical tubes.
  • the cylindrical-ring-shaped space formed between them takes the place of the interior of the previously described tube, and the material to be heated can flow through this space.
  • the outer surface of the inner tube and the inner surface of the outer tube can be used over the entire surface or only partially over the entire area as electrodes for generating the intended transverse field.
  • Electrodes Materials are to be used for the electrodes that are resistant or indifferent to the material to be heated, even under the electrolytic effect, and that in the entire temperature range in question.
  • precious metals such as platinum, tungsten, molybdenum, tantalum, zircon, niobium and above all titanium are also suitable.
  • titanium for example, the possibility or the presence of a very resistant oxide layer on the metal plays an important role.
  • graphite electrodes and / or electrically conductive or electrically conductive glass carbon electrodes, as well as electrodes made of plastic material with conductivity, can also be particularly advantageous.
  • FIG. 1a, 1b the cross sections of two embodiments, for which a round tube has been assumed;
  • FIG. 2, 3 cross sections of two embodiments with a flat-round tube
  • FIG. 4 shows a side view, essentially as a longitudinal section, of an embodiment with several successive electrode pairs
  • Fig. 5a, 5b cross sections to Fig. 4;
  • FIG. 6 lying in the longitudinal section and cross section of an embodiment with a coaxial shape and arrangement of two tubes or pairs of electrodes.
  • 2 and 3 designate two plate-shaped electrodes of a pair of electrodes in one embodiment of a device according to the invention.
  • the remaining portions of the original pipe wall are designated by 4 and 5.
  • These parts 4 and 5 consist, for example, of electrically insulating material in order to exclude a short circuit for the electrical voltage U and field distortions to be applied to the electrodes 2 and 3.
  • A is the axis of the device.
  • FIG. 1b shows a second embodiment.
  • the bodies 112 and 113 shown in FIG. 1b are inserted, the flat surfaces of which face the axis A are the electrode surfaces 12 and 13.
  • the tube 11 is made of an electrically insulating material.
  • FIG. 2 shows an embodiment with a flat, round tube 21.
  • the electrodes 22 and 23 are flat or plate-shaped.
  • 24 and 25 rounding parts of the tube 21 are referred to, which also consist of electrically insulating material.
  • FIG. 3 shows an embodiment similar to FIG. 2.
  • the electrodes 22 and 23 also form a portion of the tube 31 here, or in this embodiment the electrodes 22, 23 can also be inserted into the tube wall. With 34 rounding parts and with 35 flat portions of the tube 31 are designated.
  • the liquid flow (perpendicular to the plane of representation of the figures) is aligned parallel to the direction of the axis A, so that the electric field between the electrode pairs 2, 3; 12, 13; 22, 23 vertical or is directed transversely to the liquid flow (and axis A) and that the interior enclosed by the respective pipe parts or electrodes is free from those edges and corners which act as dead spaces or exclude deposits or prolonged lingering of the material flowing through.
  • Fig. 4 shows an embodiment with a tube 41, in the interior or in the wall of which the individual required electrodes are inserted.
  • the electrodes 42 and 43 form a first pair of electrodes.
  • the field direction between these electrodes 42 and 43 is indicated by the double arrow F.
  • 142 denotes the only visible electrode of a second pair of electrodes.
  • the electrical field of this pair of electrodes is indicated by the St. Andrew's cross and the reference symbol F '.
  • This field direction F ' is perpendicular to the field direction F.
  • Both field directions F and F' are essentially perpendicular or transverse fields with respect to the flow direction shown by the arrow S. 242 and 243 denote the electrodes of a further pair of electrodes with the field direction F.
  • 5a and 5b show the sections indicated in FIG. 4.
  • 5b also shows the electrode 143 (in section) of the pair of electrodes 142-143.
  • the electrodes 42, 43, 142, 143, ... are curved cylinder shells (so that portions of the electrodes 42, 43 which are not cut can also be seen in FIG. 4), which are embedded in the wall of the tube 41 or are inserted. Due to the curvature of the electrodes, the double arrows F, F 'show the essential direction of the electrical transverse field, which shows a certain inhomogeneity at the edge.
  • Fig. 6 shows an embodiment with coaxial electrodes 62, 63 with also transverse electric field F between these electrodes.
  • the outer tube 61 corresponds essentially to a tube of the above-described embodiments, but here the one electrode 62 can be a ring electrode, as is the case with the combined one. 6 can be seen.
  • the electrodes are arranged in the respective tube in such a way that there is a smooth, undisturbed surface for the flow.
  • the electrodes are shown hatched as metal electrodes. They can also be electrically conductive electrodes made of graphite, glass carbon or plastic, as stated above.
  • the total length of the heating section was 330 mm, of which the portion occupied by electrodes was 240 mm.
  • the pipe width was 20 mm. 36% of the total pipe interior area was electrode areas.
  • the axial distance between two successive pairs of electrodes is 30 mm.
  • the length of the two longer pairs of electrodes was 80 mm and the length of the two shorter pairs of electrodes was 40 mm.
  • Voltages between 80 and 220 volts were applied.
  • the total current was up to 32 amps.
  • the flow rate was 2.5 l / min.
  • the heating rate was up to 20 K / s for orange juice and up to 14 K / s for milk.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)

Abstract

Dispositif pour chauffer par conduction des produits coulants particulièrement fragiles, comportant des paires d'électrodes (42-43; 142-143; ...) disposées dans un tube (41) pour créer un champ transversal respectif (F, F').
PCT/DE1987/000060 1986-02-25 1987-02-23 Dispositif pour chauffer par conduction des produits coulants WO1987004902A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863606032 DE3606032A1 (de) 1986-02-25 1986-02-25 Vorrichtung fuer konduktive erwaermung fliessfaehigen gutes
DEP3606032.1 1986-02-25

Publications (1)

Publication Number Publication Date
WO1987004902A1 true WO1987004902A1 (fr) 1987-08-27

Family

ID=6294894

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1987/000060 WO1987004902A1 (fr) 1986-02-25 1987-02-23 Dispositif pour chauffer par conduction des produits coulants

Country Status (3)

Country Link
AU (1) AU7032487A (fr)
DE (1) DE3606032A1 (fr)
WO (1) WO1987004902A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0457179A1 (fr) * 1990-05-16 1991-11-21 GEA Finnah GmbH Dispositif pour réchauffage conductif de produits capables de couler
WO1997009866A1 (fr) * 1995-09-07 1997-03-13 Bar-Keser Project Management Initiatives And Economic Consultants (1991) Ltd. Dispositifs et elements de chauffage electrique
US6704497B2 (en) 1995-09-07 2004-03-09 Bar-Keser Project Management Initiatives And Economic Consultants (1991) Ltd. Electric heating devices and elements

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2313106B (en) 1996-05-17 1998-08-12 Ian Elliott Serving heated alcoholic beverages
DE19829359A1 (de) * 1998-03-19 1999-09-23 Sig Combibloc Gmbh Verfahren und Vorrichtung zur kontinuierlichen Sterilisation eines fließfähigen Produktes
EP2289342A1 (fr) * 2009-08-27 2011-03-02 INDAG Gesellschaft für Industriebedarf mbH & Co. Betriebs KG Dispositif et procédé de chauffage d'un produit s'écoulant

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1668293A (en) * 1925-10-01 1928-05-01 Frank F Van Tuyl Apparatus for electrically treating liquids
US1730016A (en) * 1920-03-03 1929-10-01 Electropure Corp Apparatus for sterilizing liquids
US2164009A (en) * 1938-03-22 1939-06-27 Trumbull Electric Mfg Co Electric pasteurizing apparatus
DE835687C (de) * 1950-05-18 1952-04-07 Siemens Schuckertwerke A G Verfahren und Einrichtung zum elektrischen Erhitzen fluessiger Lebensmittel
EP0032464A1 (fr) * 1980-01-21 1981-07-22 The Electricity Council Appareil pour chauffer des milieux liquides électriquement conducteurs
EP0032840A1 (fr) * 1980-01-21 1981-07-29 The Electricity Council Appareil pour chauffer des milieux liquides électriquement conducteurs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1730016A (en) * 1920-03-03 1929-10-01 Electropure Corp Apparatus for sterilizing liquids
US1668293A (en) * 1925-10-01 1928-05-01 Frank F Van Tuyl Apparatus for electrically treating liquids
US2164009A (en) * 1938-03-22 1939-06-27 Trumbull Electric Mfg Co Electric pasteurizing apparatus
DE835687C (de) * 1950-05-18 1952-04-07 Siemens Schuckertwerke A G Verfahren und Einrichtung zum elektrischen Erhitzen fluessiger Lebensmittel
EP0032464A1 (fr) * 1980-01-21 1981-07-22 The Electricity Council Appareil pour chauffer des milieux liquides électriquement conducteurs
EP0032840A1 (fr) * 1980-01-21 1981-07-29 The Electricity Council Appareil pour chauffer des milieux liquides électriquement conducteurs

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0457179A1 (fr) * 1990-05-16 1991-11-21 GEA Finnah GmbH Dispositif pour réchauffage conductif de produits capables de couler
DE4015704A1 (de) * 1990-05-16 1991-11-21 Gea Finnah Gmbh Vorrichtung zur konduktiven erwaermung von fliessfaehigen guetern
WO1997009866A1 (fr) * 1995-09-07 1997-03-13 Bar-Keser Project Management Initiatives And Economic Consultants (1991) Ltd. Dispositifs et elements de chauffage electrique
US6483990B1 (en) 1995-09-07 2002-11-19 Bar-Keser Project Management Initiatives And Economic Consultants Electric heating devices and elements
US6704497B2 (en) 1995-09-07 2004-03-09 Bar-Keser Project Management Initiatives And Economic Consultants (1991) Ltd. Electric heating devices and elements

Also Published As

Publication number Publication date
AU7032487A (en) 1987-09-09
DE3606032A1 (de) 1987-08-27

Similar Documents

Publication Publication Date Title
DE3512058C2 (fr)
DE69205296T2 (de) Verfahren und Vorrichtung zur Aufbewahrung von biologischen Produkten.
DE69033273T2 (de) Gepulste hochspannungssysteme zur verlängerung der haltbarkeit von pumpfähigen nährmtteln
DE60123645T2 (de) Verfahren und vorrichtung zur sterilisation
DE10144486C1 (de) Verfahren zum kontinuierlichen nichtthermischen Aufschluß und Pasteurisieren industrieller Mengen organischen Prozessguts durch Elektroporation und Reaktor zum Durchführen des Verfahrens
DE4434039A1 (de) Verfahren und Vorrichtung zum Erwärmen von Lebensmittelprodukten durch Elektrowärme unter Verwendung eines niederfrequenten Stroms
DE4310753A1 (de) Verfahren und Vorrichtungen zum elektrischen Erhitzen von Flüssigei
WO1987004902A1 (fr) Dispositif pour chauffer par conduction des produits coulants
WO1993013674A1 (fr) Procede et dispositif d'extermination de miroorganismes
DE60217529T2 (de) Gerät und verfahren zur behandlung einer substanz, die unerwünschte mikroorganismen enthält, mit einem gepulsten elektrischen feld
EP1487240B1 (fr) Dispositif chauffant pour un courant de produits
WO1998054291A2 (fr) Dispositif et procede pour influer sur l'arome et le gout d'aliments et de boissons
WO2009012949A1 (fr) Procédé et dispositif de préparation de milieux organiques et/ou inorganiques
DE60218070T2 (de) Industrielle vorrichtung zum anlegen eines hochfrequenten elektromagnetischen feldes an halbleitende bzw. dielektrische materialien
DE69514579T2 (de) Verfahren und Vorrichtung zum Erwärmen einer strömenden ionischen Flüssigkeit
DE3153067T (de) Verfahren und Vorrichtung zum Abtöten von Organismen in einem Wirtsmaterial
DE2716635A1 (de) Herd zum kochen, backen, braten und grillen von speisen
DE873882C (de) Vorrichtung zum Erhitzen von Fluessigkeiten, insbesondere fluessigen Lebensmitteln
DE1692220A1 (de) Verfahren und Vorrichtung zur Sterilisation fluessiger Lebensmittel
EP2633767A2 (fr) Dispositif et procédé de traitement par impulsions haute tension dans la fente annulaire
DE3425088A1 (de) Verfahren und vorrichtung zum schonenden erwaermen von insbesondere fluessigen nahrungs- und genussmitteln
DE506693C (de) Vorrichtung zur Pasteurisation oder Sterilisation von Fluessigkeiten, insbesondere von Milch, auf elektrischem Wege
DE832309C (de) Verfahren und Einrichtung zum Erhitzen von Fluessigkeiten, insbesondere fluessigen Nahrungs- und Genussmitteln
DE807166C (de) Verfahren und Vorrichttung zur Sterilisation und gleichzeitigen Veredlung von festen und fluessigen Nahrungs- und Genussmitteln
DE2300585A1 (de) Friteuse

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE

WA Withdrawal of international application