DE1951633A1 - Pasteurisation/sterilisation of liquid or - semi-liquid - Google Patents

Pasteurisation/sterilisation of liquid or - semi-liquid

Info

Publication number
DE1951633A1
DE1951633A1 DE19691951633 DE1951633A DE1951633A1 DE 1951633 A1 DE1951633 A1 DE 1951633A1 DE 19691951633 DE19691951633 DE 19691951633 DE 1951633 A DE1951633 A DE 1951633A DE 1951633 A1 DE1951633 A1 DE 1951633A1
Authority
DE
Germany
Prior art keywords
element according
tube
radiation source
rays
ultra
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.)
Pending
Application number
DE19691951633
Other languages
German (de)
Inventor
Richard Rouault
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19691951633 priority Critical patent/DE1951633A1/en
Publication of DE1951633A1 publication Critical patent/DE1951633A1/en
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • 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
    • 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
    • A23L3/0055—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment with infrared rays
    • 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
    • A23L3/26—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by irradiation without heating
    • A23L3/28—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by irradiation without heating with ultraviolet light

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Nutrition Science (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

The tube comprises a central ultra-violet or heat radiation emitter around which is an annular space. The product flows alont the latter and is externally limited by a tube concentric to the unit. This tube's internal wall reflects inwards the radiations from the central emitter. Speci., the emitter is an infra-red or ultra-violet radiation source, comprises an electric resistance and is heated by steam. The central emitter's heat source is separated from the product by a quartz tube.

Description

Rohrförmiges Element zum Pasteurisieren oder Sterilisieren von flüssigen oder dickflüssigen Produkten Es ist bekannt, flüssige oder dickflüssige Produkte, wie z.B. Wasser, Milch, Wein, Bier, Sirup, oder Fruchtsäfte in der Weise zu pasteurisieren oder sterilisieren, dass man sie durch rohrförmige Elemente fliessen lässt, in welchen sie thermischen oder ultra-violetten Strahlungen ausgesetzt sind.Tubular element for pasteurizing or sterilizing liquids or viscous products It is known that liquid or viscous products, such as water, milk, wine, beer, syrup, or fruit juices in such a way to pasteurize or sterilize by letting them flow through tubular elements in which they are exposed to thermal or ultra-violet radiation.

Die vorliegende Erfindung betrifft ein solches rohrförmiges Element, das sich dadurch kennzeichnet, dass es eine axial liegende Quelle thermischer oder ultra-violetter Strahlungen aufweist, um welche ein ringförmiger Raum zum längsgerichteten Durchfluss des zu behandelnden Produkter liegt, welcher Raum, aussen durch eine konzentrische, rohrförmige Wand begrenzt ist; die die Eigenschaft besitzt, die von der Quelle erzeugten Strahlungen nach innen zurückzuwerfen Die einzige Figur der Zeichnung ist eine beispielsweise Ausführungsform des Erfindungsgegenstandes im Längs schnitt. The present invention relates to such a tubular element, which is characterized by the fact that it is an axially located source of thermal or having ultra-violet radiations, around which an annular space to the longitudinal Flow of the product to be treated is, which room, outside through a concentric, tubular wall is delimited; which has the property that of The only figure of the The drawing is an example of an embodiment of the subject matter of the invention Longitudinal cut.

In der Achse des dargestellten Elementes, in 1, befindet sich um einen feuerfesten, isolierenden Stab, gewundener elektrischer Widerstand 2. In the axis of the element shown, in FIG. 1, is located at a refractory, insulating rod, coiled electrical resistance 2.

An beiden Enden, in 3, ist der Widerstand mit nicht darges-tellten Klemmen oder irgendwie mit einer Stromquelle verbunden. At both ends, in 3, the resistance is not shown Clamps or somehow connected to a power source.

Um die so gebildete Strahlenquelle verbleibt ein ringförmiger freier Raum zum Durchfluss des zu behandelnden Prcduktes. Eine nicht dargestellte Pumpe, das Eigengewicht oder irgend ein anderes Mittel bewirkt das längsgerichtete Fliessen des Produktes durch diesen Raum und wird vorzug weise die Möglichkeit einer Regelung der Durchflussmenge aufweisen. An annular, free one remains around the radiation source formed in this way Room for the flow of the product to be treated. A pump, not shown, its own weight or some other means causes the longitudinal flow of the product through this space and is preferably the possibility of a regulation the flow rate.

Das äussere Rohr 6 besteht im Gegenteil aus einem Material, daß diese Strahlen nicht nur zurückhalt, sondern diese nach innen zu zurückwirft. The outer tube 6 consists, on the contrary, of a material that this Not only restrains rays, but throws them back inward.

An beiden Enden des Elementes sind Verschlüsses 7, bzw. At both ends of the element there are locks 7 or

angeordnet, die alle gellannten Teile halten und zueinander zentrieren. Sie haben ringförmige Kammern 9, bzw. 10, in welche der innere ringförmige Raum 4 mündet. Diese Kammern haben seitliche Oefnunngen 11, bzw. 12, an welche man die Zu- und Abführleitungen anschliessen kann.arranged, which hold and center each other in the same position. They have annular chambers 9 and 10, respectively, in which the inner annular space 4 opens. These chambers have lateral openings 11 or 12 to which the Can connect supply and discharge lines.

Wie ersichtlich, liegen diese Oeffnungen voneinanuer agbekehrt, damit sich im Element keine einseitige Strömung bildet. As can be seen, these openings are inverted from one another, so no one-sided flow forms in the element.

Die Verschlüsse 7 und 8 enden mit elastischen Dichtungen, ie es gestatten, das Element zwischen zwei Wänden eines Sterilisierapparates einzuspannen, welcher eine grössere Anzahl parallel liegenden, solcher Elemente aufnehmen kann, deren seitliche Oeffnungen 11, 12 parallel oder hintereinander geschaltet werden können. Für infra-rote behandlung wird man das innere Rohr 5, das die Strahlungsquelle umgibt, vorzugsweise aus Quartz herstellen. Dies, weil Quartz die Eigenschaft aufweist, gewisse Schwingungen derart zu polarisieren, dass ihnen eine Rotattionsbewegung erteilt wird. The closures 7 and 8 end with elastic seals, ie allow to clamp the element between two walls of a sterilizer, which can accommodate a larger number of parallel, such elements, their lateral openings 11, 12 can be connected in parallel or in series. For infra-red treatment, the inner tube 5 that surrounds the radiation source is used preferably made from quartz. This is because quartz has the property to polarize certain vibrations in such a way that they cause a rotational movement is granted.

Die so erzeugte Wirbelung der Moleküle des behandelten Produktes verhindert ansonst stellenweise erscheinende Ueberhitzung und das sogenannte Festbacken dieses letzteren an die Rohrwand. The vortex created in this way in the molecules of the treated product otherwise prevents overheating in places and so-called sticking the latter to the pipe wall.

Das äussere Rohr 6 kann z.B. aus fein poliertem, rostfreiem Stahl bestehen, das die in hohem Hasse grosse Fähigkeit hat, die Strahlungen zurückzuwerfen. The outer tube 6 can, for example, be made of finely polished stainless steel who have great ability, in high hatred, to reflect the radiations.

Im Fall eines Elementes für ultra-violette Behandlung wiirde die Anordnung dieselbe sein, wobei aber das innere Rohr 5 die Ultra-Violettstrahlenquelle bilden würde. In the case of an element for ultra-violet treatment, the The arrangement may be the same, but with the inner tube 5 being the ultra-violet ray source would form.

Zu bemerken sei, dass die innere Wärmequelle auch eine einfache Heisswasserleitung sein könnte, oder vorzugsweise eine Wasserdampfleitung. It should be noted that the internal heat source is also a simple hot water pipe could be, or preferably a steam pipe.

Der Vorzug d-er erfindungsgemässen Anordnungen mit einer, die wirksamen Strahlungen zurückwerfenden Wand, liegt in einer grossen Ersparnis an Energie und Verkleinerung der Abmessungen des Elementes gegenüber denjenigen, bei welchen die Behandlung das Hindurchfliessen durch eine grössere Anzahl einfach wirkender Elemente mit bussen liegender Strahlenquelle bedingt. ei solchen Elementen ist die Ausnützung der Strahlen nicht wirtschaftlich. The advantage of the inventive arrangements with one that is effective The wall reflecting radiation results in a great saving of energy and Reduction of the dimensions of the element compared to those in which the Treatment of flowing through a larger number of single-acting elements with bussen lying radiation source conditional. such elements are exploitation the rays are not economical.

Das Zurückwerfen der bereits durch das Produkt geführten Strahlen hat in der Tat zur Folge, dass letzteres sozusagen ein zweites Mal oder mindestens zum Teil ein zweites Mal, bestrahlt wird, da die Verluste der Vorrichtung sehr gering sind. Die abstige Strahlungsenergie kann entsprechend herabgesetzt werden, Ein infra-rotes Element kann sowohl zum Pasteurisieren als zum Sterilisieren benützt werden. Es ist bloss Sache der Temperatur, die man entsprechend einstellen wird, oder der Durchflussgeschwindigkeit. The reflection of the rays that have already passed through the product in fact has the consequence that the latter, so to speak, a second time or at least partly a second time, is irradiated, since the losses of the device are very low are. The abating radiant energy can be reduced accordingly, an infra-red Element can be used for pasteurization as well as for sterilization. It is just a matter of the temperature, which you will set accordingly, or the flow rate.

Dank dem verbesserten Wirkungsgrad des erfindungsgemässen Elementes, ist es möglich, in einem Apparat mit grosser Leistung die Anzahl der parallel geschalteten Elemente zu vermindern und die Durchflüssgeschwindigkeit zu vergrössern. Thanks to the improved efficiency of the element according to the invention, it is possible to increase the number of parallel connected in an apparatus with a large output To reduce elements and to increase the flow rate.

Der erhöhte Wirkungsgrau erlaubt es auch, den Durchflussquerschnitt u verringern, was den Vorteil hat, dass eine dünnere Schicht besser und gleichmässiger behandelt wird und auch die Wirbelbewegungen besser ausgeführt werden. The increased effect gray also allows the flow cross-section u decrease, which has the advantage that a thinner layer is better and more even is treated and the movements of the vertebrae are performed better.

Es ist bekannt, dass die Wellenlänge die der maximalen Wärmestrahlung entspricht, der absoluten Temperatur eines Körpers gegenüber umgekehrt proportioniert ist. Beträgt die Dicke der Schicht des zu behandelnden Produktes etwa 5 mm, so kann man eine relativ grosse Wellenlänge benützen und die Temperatur der Wärmequelle entsprechend herabsetzen, was dss Risiko des Festbackens vermindert. It is known that the wavelength is that of the maximum thermal radiation is inversely proportioned to the absolute temperature of a body is. If the thickness of the layer of the product to be treated is about 5 mm, then use a relatively long wavelength and the temperature of the heat source reduce accordingly, which reduces the risk of sticking.

Claims (8)

PatentansprücheClaims 1) Rohrförmiges Element zum Pasteuriseren oder Sterilisieren von flüssigen oder dickflüssigen produkten, gekennzeichnet durch eine axiale Wärme oder ultra-violette Strahlen ausgebende Quelle (1, 2), um welche ein ringförmiger freier Raum (4) zum axialgerichteten Durchfluss des zu behandelnden Produktes liegt, der aussen durch eine rohrförmige Wand CC) begrenzt ist, die das Vermögen hat, die Strahlungen nach nen zurück zu werfen. 1) Tubular element for pasteurizing or sterilizing liquid or viscous products, characterized by an axial heat or Source (1, 2) emitting ultra-violet rays, around which a ring-shaped free Space (4) for the axially directed flow of the product to be treated, which outside by a tubular wall CC) is limited, which has the ability to absorb the radiation to throw back at nen. 2) Element nach Anspruch 1, dadurch gekennzeichnet, dass die Strahlenquelle infrarote Strahlen aisgibt. 2) Element according to claim 1, characterized in that the radiation source emits infrared rays. 3) Element nach Ansprüchen 1 und 2, dadurch gekennzeichnet, dass die Strahlenquelle ein elektrischer Widerstand isL (1). 3) Element according to claims 1 and 2, characterized in that the radiation source has an electrical resistance isL (1). 4) Element nach Ansprüchen 1 und 2, dadurch gekennzeichnet, dass die Strahlenquelle eine Wasserdampfleitung ist. 4) Element according to claims 1 and 2, characterized in that the radiation source is a steam pipe. 5) Element nach Ansprüchen 1 und 2, dadurch gekennzeichnet, dass die Wärmestrahlen durch ein Quartzrohr (5) geführt sind. 5) Element according to claims 1 and 2, characterized in that the heat rays are guided through a quartz tube (5). 6) Element nach Anspruch 1, dadurch gekennzeichnet, das die Strahlenquelle ultra-violette Strahlen ausgibt. 6) Element according to claim 1, characterized in that the radiation source emits ultra-violet rays. 7) Element nach Anspruch 1, dadurch gekennzeichnet, das die Dicke des bestrahlten Produktes im ringförmigen Raum (4) von der Grösseordnung von 5 mm ist. 7) Element according to claim 1, characterized in that the thickness of the irradiated product in the annular space (4) on the order of 5 mm is. 8) Element nach Anspruch 1, dadurch gekennzeichnet, dass das äussere, die Strahlen zurückwerfende Rohr (6), ein innen fein poliertes Rohr auf rostfreiem Stahl ist. L e e r s e i t e 8) Element according to claim 1, characterized in that the outer, The tube reflecting the rays (6), a tube made of stainless steel, finely polished on the inside Steel is. L e r s e i t e
DE19691951633 1969-10-14 1969-10-14 Pasteurisation/sterilisation of liquid or - semi-liquid Pending DE1951633A1 (en)

Priority Applications (1)

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Applications Claiming Priority (1)

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DE1951633A1 true DE1951633A1 (en) 1971-05-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2616627A1 (en) * 1987-06-16 1988-12-23 Reybier Fromageries Method for destroying sporulated and vegetative bacteria in milk-based liquid products, and installation for implementing this method
EP1464342A1 (en) * 2003-03-21 2004-10-06 Bayer Technology Services GmbH Process and apparatus for sterilising liquids using ultraviolet radiation and short-time heating
WO2006086427A2 (en) * 2005-02-10 2006-08-17 Wyeth Apparatus and method for radiation processing of fluent food products

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2616627A1 (en) * 1987-06-16 1988-12-23 Reybier Fromageries Method for destroying sporulated and vegetative bacteria in milk-based liquid products, and installation for implementing this method
EP1464342A1 (en) * 2003-03-21 2004-10-06 Bayer Technology Services GmbH Process and apparatus for sterilising liquids using ultraviolet radiation and short-time heating
US7420183B2 (en) 2003-03-21 2008-09-02 Bayer Technology Services Gmbh Apparatus and process for sterilization of liquid media by means of UV irradiation and short-time heat treatment
WO2006086427A2 (en) * 2005-02-10 2006-08-17 Wyeth Apparatus and method for radiation processing of fluent food products
WO2006086427A3 (en) * 2005-02-10 2007-06-21 Wyeth Corp Apparatus and method for radiation processing of fluent food products
AU2006212743B2 (en) * 2005-02-10 2011-11-10 Société des Produits Nestlé S.A. Apparatus and method for radiation processing of fluent food products
US8802018B2 (en) 2005-02-10 2014-08-12 Nestec S.A. Apparatus and method for radiation processing of fluent food products

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