EP0272538A2 - Dispositif pour désinfecter des récipients pour nourriture - Google Patents

Dispositif pour désinfecter des récipients pour nourriture Download PDF

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Publication number
EP0272538A2
EP0272538A2 EP87118127A EP87118127A EP0272538A2 EP 0272538 A2 EP0272538 A2 EP 0272538A2 EP 87118127 A EP87118127 A EP 87118127A EP 87118127 A EP87118127 A EP 87118127A EP 0272538 A2 EP0272538 A2 EP 0272538A2
Authority
EP
European Patent Office
Prior art keywords
separating head
separating
container
electrode
particular according
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.)
Granted
Application number
EP87118127A
Other languages
German (de)
English (en)
Other versions
EP0272538A3 (en
EP0272538B1 (fr
Inventor
Ernst Günter Dr. Lierke
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.)
Leifeld and Lemke Maschinenfabrik GmbH and Co KG
Original Assignee
Kolbus GmbH and Co KG
Leifeld and Lemke Maschinenfabrik GmbH and Co KG
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 Kolbus GmbH and Co KG, Leifeld and Lemke Maschinenfabrik GmbH and Co KG filed Critical Kolbus GmbH and Co KG
Publication of EP0272538A2 publication Critical patent/EP0272538A2/fr
Publication of EP0272538A3 publication Critical patent/EP0272538A3/de
Application granted granted Critical
Publication of EP0272538B1 publication Critical patent/EP0272538B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
    • B65B55/02—Sterilising, e.g. of complete packages
    • B65B55/04—Sterilising wrappers or receptacles prior to, or during, packaging
    • B65B55/10—Sterilising wrappers or receptacles prior to, or during, packaging by liquids or gases

Definitions

  • the invention relates to a device for disinfecting food containers, in particular plastic cups for holding milk products, using a disinfectant, with an aerosol generator with a MHz ultrasound transducer for generating droplets of the disinfectant and with a separating device in which the droplets supplied by air flow are charged by corona discharge and deposited electrostatically on the surfaces of a container, the separating device consisting of a separating head engaging in the container with a central tip electrode fed by a generator, an outer electrode surrounding the container and an auxiliary electrode at the end of the separating head, which forms an electric field with the outer electrode.
  • the object of the invention is the separating head used here to further improve its function.
  • the separating head should offer a high level of safety in the event of possible splintering and also make it easy to set up and replace the tip electrode.
  • the separating head 2 consists of a glass body 20 with a tip electrode 3 running in the center, which is fed by a high-voltage generator.
  • the glass body 20 is enclosed at the end by a metal foil as an auxiliary electrode 4.
  • a metal foil as an auxiliary electrode 4.
  • the electrostatic field is formed, by means of which the droplets of the disinfectant charged at the tip electrode 3 by corona discharge are electrostatically deposited on the container wall.
  • the droplets of the disinfectant continuously generated in an aerosol generator with a MHz ultrasound transducer are fed to the separating head 2 with the aid of a clocked air flow, the amount of the disinfectant being able to be controlled via the cycle length.
  • the glass body 20 of the separating head 2 is designed as a double-walled body, in which the flow channel 2a for the disinfectant is surrounded by a second flow channel 2b to which heated air can be applied.
  • Separating head 2 and counter electrode 5 are moved intermittently between actuating means (not shown) between a working position enclosing the container between them and an open position away from the container.
  • the insulator surface to be coated is charged more or less quickly by the separated aerosol drops that are electrically charged by corona discharge, until an electrical constant field is built up by the surface charge, which shields the field strength at the corona tip.
  • the corona discharge then goes out and stops the electrostatic aerosol charging and separation.
  • the extinction of the corona discharge and thus the limitation of the separation effect can be prevented by changing the polarity of the corona tip after the measurable decrease or the extinction of the corona current due to field shielding, i. H. this alternately applies positive or negative voltage.
  • the aerosol stream is then alternately charged negatively or positively and, in both cases, conducted and separated in the field between the corona tip and the ground electrode to the isolator surface in between.
  • the previous counter-polar surface charge causes an effective increase in field strength, which is only gradually reduced again by further deposition.
  • By periodically changing the polarity of the corona This way, any amount of fine aerosol can be deposited completely and evenly on the container surfaces.
  • the separating head 2 is inserted into the container from above in order to separate the finest aerosol drops in monolayer or double layers on their inner surfaces.
  • a liquid circulation heating system is more effective than a hot air heating system due to a significantly better heat transfer.
  • the level of the heating temperature always depends on the "weakest point" on the separating head 2, that is the point at which the aerosol flow impinges more or less perpendicularly on the separating head surface with a high speed component ("blind spot").
  • Effective air surface cooling and increased “drop bombardment” mean that the temperature on the surfaces exposed to the flow is much lower.
  • the critical part of the separating head 2 with the greatest tendency to deposit is kept at a higher temperature than the remaining part of the separating head by an electric heating bandage 15 (FIGS. 3 and 4).
  • the separating head 2 is preceded by an expanded space 16, into which an inlet connection 9 for the disinfectant radially protrudes, and an encircling collecting bead 10 is formed on the expanded space 16 and runs towards the separating head 2.
  • the inlet connection 9 is located at a defined distance from the collecting bead 10. The use of such a collecting bead 10 reliably prevents the aerosol from dripping downward. The liquid is drained off via a drainage pipe 10a leading away from the collecting bead 10, as a result of which the heating bandage 15 can cease to exist (FIGS. 3 and 4).
  • the separating head 2 can be operated in such a way that the fine dust aerosol is guided against the surfaces to be coated from below, which automatically prevents dripping and therefore basically does not require any heating.
  • the central arrangement of the high-voltage tip electrode in the separating head 2 shown in FIG. 1 has no insulation in the central tube, so that a non-conductive medium must be used for preheating the separating head 2. In continuous operation, deposits can occur in this inner tube, which then give rise to undesired leakage currents.
  • a dense ceramic tube 11 in the center of the separating head 2, which is firmly connected to the central tube of the separating head 2 at the upper and lower ends by a seal 12a, 12b (FIG. 4).
  • the corona tip 13 is inserted as a long thin wire, which protrudes at the lower end with a free length to be optimized. In this way, changes in length and a service exchange of the corona tip, which can be routed to the generator via a flexible high-voltage cable, are easy to carry out.
  • the tip electrode can also be designed in the form of a tip 17 which can be inserted or plugged into the central tube of the separating head 2 at the end and is connected to a feed line 18 running in the central tube.
  • the tip 17 is received by an insert part 19.
  • the separating head 2 In use, it cannot be excluded that the separating head 2, which is made of glass as an electrical insulator, will be damaged.
  • the separating head 2 In order to avoid glass splinters in particular in food processing applications, the separating head 2 is provided with a tear-resistant, heat and chemically resistant plastic coating according to a last improvement according to the invention, which is applied in a known manner by powder coating and subsequent baking on the outer and inner surfaces of the separating head 2 .
  • This plastic coating which is preferably transparent, also secures the metal electrode 4 of the separating head 2 against mechanical, chemical or electro-chemical corrosion and, because of the high electrical resistance, prevents electrical breakdown between the separating head 2 and the "ground" electrode 5 of the apparatus.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
EP87118127A 1986-12-24 1987-12-08 Dispositif pour désinfecter des récipients pour nourriture Expired - Lifetime EP0272538B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863644486 DE3644486A1 (de) 1986-12-24 1986-12-24 Vorrichtung zum entkeimen von lebensmittelbehaeltern
DE3644486 1986-12-24

Publications (3)

Publication Number Publication Date
EP0272538A2 true EP0272538A2 (fr) 1988-06-29
EP0272538A3 EP0272538A3 (en) 1989-12-27
EP0272538B1 EP0272538B1 (fr) 1992-02-19

Family

ID=6317232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87118127A Expired - Lifetime EP0272538B1 (fr) 1986-12-24 1987-12-08 Dispositif pour désinfecter des récipients pour nourriture

Country Status (4)

Country Link
US (1) US4900527A (fr)
EP (1) EP0272538B1 (fr)
JP (1) JPS63218031A (fr)
DE (2) DE3644486A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0818390A1 (fr) * 1996-07-05 1998-01-14 Hassia Verpackungsmaschinen GmbH Dispositif pour stériliser des bandes en matériau d'emballage
EP0801952A3 (fr) * 1996-04-20 1999-07-21 Rüdiger Haaga GmbH Appareil pour la stérilisation des surfaces intérieures de récipients sensibles à la pression
EP1091764A4 (fr) * 1998-06-23 2003-04-23 Saban Ventures Pty Ltd Desinfection amelioree

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3903235A1 (de) * 1989-02-03 1990-08-09 Hoechst Ag Verfahren und vorrichtung zur oberflaechenvorbehandlung von flaechenhaften koerpern mit elektrischer koronaentladung
DE4018023A1 (de) * 1990-06-05 1991-12-12 Dietwart Voelpel Einrichtung zum reinigen und sterilisieren von gegenstaenden, insbesondere pharmazeutischen verschlusselementen
GB2246955B (en) * 1990-08-16 1994-04-06 Jonathan Hugh Lambert Copus Destruction of microorganisms
SE465512B (sv) * 1990-11-07 1991-09-23 Tetra Pak Holdings Sa Saett att sterilisera ett foerpackningsmaterial medelst ett vaetskeformigt steriliseringsmedel
US5147423A (en) * 1991-03-01 1992-09-15 Richards Clyde N Corona electrode for electrically charging aerosol particles
JPH07115947A (ja) * 1993-10-25 1995-05-09 Tsubakimoto Chain Co 衝撃波殺菌装置
DE59800588D1 (de) * 1997-01-07 2001-05-10 Gea Finnah Gmbh Verfahren und maschine zum vorbereiten von flaschen für eine befüllung und befüllen der flaschen
DE19727942C2 (de) 1997-07-01 1999-04-15 Gea Finnah Gmbh Maschine und Verfahren zum Verschließen von Flaschen mit Verschlußkappen
FR2952552B1 (fr) * 2009-11-19 2012-01-13 Commissariat Energie Atomique Dispositif de recuperation de nanopoudres et de poudres ultrafines contenues dans un gaz
NL2021786B1 (en) * 2018-10-10 2020-05-14 Jbt Food & Dairy Systems B V An aseptic packaging machine with a collector cup for a sterilizer-nozzle assembly
CN110074308B (zh) * 2019-04-04 2023-04-07 肯尼斯.粲.何 静电气雾消毒灭菌方法、系统及设备

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US2014750A (en) * 1932-02-10 1935-09-17 Corp Of Seitz Werke G M B H Apparatus for sterilizing containers
FR1117341A (fr) * 1950-10-13 1956-05-22 Dispositif pour transporter un liquide sur une surface, et machine à vernir ou revêtir l'intérieur des récipients, comportant ce dispositif
US3090745A (en) * 1958-05-16 1963-05-21 Berghaus Bernhard Method of and apparatus for producing reactions under electrical action
FR1355713A (fr) * 1962-02-10 1964-03-20 Strunck & Co Maschinenfabrik F Procédé et dispositif pour sécher et stériliser des ampoules, bouteilles, flacons et autres récipients
US3341280A (en) * 1963-06-20 1967-09-12 Norda Essential Oil And Chemic Sterilization apparatus and method
AT302636B (de) * 1966-01-24 1972-10-25 Dietrich Erben Vorrichtung zur Behandlung der Oberfläche von dünnwandigen Kunststoff- oder Metallflächen od.dgl.
US3723060A (en) * 1968-02-26 1973-03-27 Ex Cell O Corp Aseptic packaging machine
US3516608A (en) * 1968-07-10 1970-06-23 Henry D Bowen Electrostatic nozzle
US3668008A (en) * 1969-06-04 1972-06-06 Xerox Corp Ionized air cleaning device
US3624448A (en) * 1969-10-03 1971-11-30 Consan Pacific Inc Ion generation apparatus
DE2149285A1 (de) * 1971-10-02 1973-04-05 Heinrich Greve Bauunternehmung Vorrichtung zur abgabe von fluessigen kunststoffbelaegen auf strassenoberflaechen
US3747296A (en) * 1971-12-06 1973-07-24 Zausner Foods Corp Sterilizing device for filling machines
US3976916A (en) * 1975-01-15 1976-08-24 Consan Pacific Incorporated Antistatic equipment
US4027201A (en) * 1975-10-06 1977-05-31 International Business Machines Corporation Apparatus and method for neutralizing static charges in sheet/web feeding devices
SE7513420L (sv) * 1975-11-28 1977-05-29 Ziristor Ab Sett och anordning for sterilisering av forpackningsmaterial
US4169123A (en) * 1975-12-11 1979-09-25 Moore-Perk Corporation Hydrogen peroxide vapor sterilization method
US4296068A (en) * 1979-02-19 1981-10-20 Dai Nippon Insatsu Kabushiki Kaisha Apparatus for sterilizing a succession of food containers or the like
US4319302A (en) * 1979-10-01 1982-03-09 Consan Pacific Incorporated Antistatic equipment employing positive and negative ion sources
NL7907492A (nl) * 1979-10-10 1981-04-14 Oce Nederland Bv Corona-inrichting.
DE3313533C2 (de) * 1983-04-14 1986-03-27 Gkss - Forschungszentrum Geesthacht Gmbh, 2054 Geesthacht Spritzvorrichtung zur thermischen Beschichtung von metallischen und nichtmetallischen Oberflächen eines Werkstückes
US4498116A (en) * 1980-02-25 1985-02-05 Saurenman Donald G Control of static neutralization employing positive and negative ion distributor
NL8101260A (nl) * 1981-03-16 1982-10-18 Oce Nederland Bv Corona-inrichting.
DE3125430A1 (de) * 1981-06-27 1983-01-20 Hick & Co Gmbh, 4901 Hiddenhausen Verfahren und vorrichtung zum sterilisieren von becherfoermigen behaeltern
US4545525A (en) * 1983-07-11 1985-10-08 Micropure, Incorporated Producing liquid droplets bearing electrical charges
US4544570A (en) * 1984-01-26 1985-10-01 Nordson Corporation Electrostatic high voltage isolation system with internal charge generation
US4542434A (en) * 1984-02-17 1985-09-17 Ion Systems, Inc. Method and apparatus for sequenced bipolar air ionization
DE3414268A1 (de) * 1984-04-14 1985-10-24 Kolbus Gmbh & Co Kg Verfahren und vorrichtung zum entkeimen von lebensmittelbehaeltern
US4642728A (en) * 1984-10-01 1987-02-10 At&T Bell Laboratories Suppression of electrostatic charge buildup at a workplace
US4630167A (en) * 1985-03-11 1986-12-16 Cybergen Systems, Inc. Static charge neutralizing system and method
US4734580A (en) * 1986-06-16 1988-03-29 The Simco Company, Inc. Built-in ionizing electrode cleaning apparatus
US4729057A (en) * 1986-07-10 1988-03-01 Westward Electronics, Inc. Static charge control device with electrostatic focusing arrangement
US4774729A (en) * 1987-06-15 1988-10-04 Coates Thomas B Athletic helmet face mask attachment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0801952A3 (fr) * 1996-04-20 1999-07-21 Rüdiger Haaga GmbH Appareil pour la stérilisation des surfaces intérieures de récipients sensibles à la pression
EP0818390A1 (fr) * 1996-07-05 1998-01-14 Hassia Verpackungsmaschinen GmbH Dispositif pour stériliser des bandes en matériau d'emballage
EP1091764A4 (fr) * 1998-06-23 2003-04-23 Saban Ventures Pty Ltd Desinfection amelioree

Also Published As

Publication number Publication date
JPS63218031A (ja) 1988-09-12
US4900527A (en) 1990-02-13
DE3776773D1 (de) 1992-03-26
EP0272538A3 (en) 1989-12-27
DE3644486A1 (de) 1988-07-07
EP0272538B1 (fr) 1992-02-19

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