EP0272538B1 - Dispositif pour désinfecter des récipients pour nourriture - Google Patents
Dispositif pour désinfecter des récipients pour nourriture Download PDFInfo
- Publication number
- EP0272538B1 EP0272538B1 EP87118127A EP87118127A EP0272538B1 EP 0272538 B1 EP0272538 B1 EP 0272538B1 EP 87118127 A EP87118127 A EP 87118127A EP 87118127 A EP87118127 A EP 87118127A EP 0272538 B1 EP0272538 B1 EP 0272538B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- deposit
- head
- deposit head
- container
- electrode
- 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
Links
Images
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 sterilizing food containers, in particular plastic cups for holding milk products, using a sterilizing agent, with an aerosol generator with a MHz ultrasound transducer for generating droplets of the sterilizing agent 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 part 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 by corona discharge on the container wall 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 counterelectrode 5 are moved intermittently between actuating means (not shown) between an operating position enclosing the container and an opening position away from the container.
- the insulator surface to be coated is charged more or less quickly by the deposited 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 flow 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 insulator surface in between.
- 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 enlarged space 16, into which an inlet connection 9 for the disinfectant radially protrudes, and a circumferential collecting bead 10 is formed on the enlarged space 16, which 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 discharge of the liquid takes place 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 aerosol is guided from below against the surfaces to be coated, which automatically prevents dripping and therefore generally 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 prevents electrical breakdown between the separating head 2 and the "ground" electrode 5 of the apparatus because of the high electrical resistance.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Claims (9)
- Dispositif pour stériliser des récipients pour produits alimentaires, notamment des gobelets en matière plastique destinés à recevoir des produits laitiers, par utilisation d'un produit de stérilisation, avec un générateur d'aérosol avec un convertisseur à ultrasons MHz pour produire des gouttelettes de produit de stérilisation et avec un dispositif de dépôt dans lequel les gouttelettes amenées par un courant d'air sont chargées par décharge à effet corona et déposées électrostatiquement sur les surfaces d'un récipient, le dispositif de dépôt étant constitué par une tête de dépôt (2) s'engageant dans le récipient avec une électrode à pointe (13) centrale, alimentée par un générateur, par une électrode extérieure entourant le récipient et par une électrode auxiliaire (4) à la partie terminale de la tête de dépôt, qui forme avec l'électrode extérieure un champ électrique, caractérisé en ce qu'après une baisse mesurable ou après extinction du courant corona, la polarité des électrodes à pointe (13) peut passer d'une tension négative à une tension positive et inversement.
- Dispositif selon la revendication 1, avec un deuxième canal d'écoulement chauffé, entourant le canal d'écoulement de la tête de dépôt (2), caractérisé en ce que le deuxième canal d'écoulement (2b) peut être alimenté en liquide chauffé.
- Dispositif selon la revendication 1 ou 2, caractérisé en ce que la région de la tête de dépôt (2) présentant la plus forte pente de dépôt de gouttelettes, est maintenue à une température supérieure à la température de la tête de dépôt (2), par un élément chauffant (15) électrique.
- Dispositif selon les revendications 1 à 3, caractérisé en ce qu'un volume élargi (16) est placé devant la tête de dépôt (2) et en ce qu'entre le volume (16) et la tête de dépôt (2) se trouve une gorge de réception (10) continue et en ce que dans le volume élargi (16), à une distance de sécurité de fonctionnement définie par rapport à la gorge de réception (10), s'engage radialement une tubulure d'arrivée (9) du produit de stérilisation, de préférence jusqu'au-delà du milieu.
- Dispositif selon la revendication 4, caractérisé en ce que la gorge de réception (10) comporte une tubulure de sortie (10a).
- Dispositif selon les revendications 1 à 5, caractérisé en ce que l'électrode à pointe est formée par un fil (13) qui se trouve dans un tube céramique (11) placé au centre de la tête de dépôt (2), lequel tube est relié à son extrémité, avec le tube central de la tête de dépôt (2), par des moyens d'étanchéité (12a ; 12b).
- Dispositif selon les revendications 1 à 6, caractérisé en ce que l'électrode à pointe est conçue sous la forme d'une pointe (17) à insérer ou à emboîter de manière amovible à l'extrémité du tube central de la tête de dépôt (2), pointe qui peut communiquer avec un conduit d'arrivée (18) s'étendant dans le tube central.
- Dispositif selon les revendications 1 à 7, caractérisé en ce que la tête de dépôt (2) est pourvue sur ses surfaces extérieures et intérieures, d'un revêtement résistant aux déchirures, aux hautes températures et aux attaques chimiques.
- Dispositif selon les revendications 1 à 8, caractérisé en ce que la tête de dépôt (2) est disposée de manière à ce que le produit de stérilisation arrive verticalement du bas ou horizontalement vers les surfaces du récipient à recouvrir.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3644486 | 1986-12-24 | ||
DE19863644486 DE3644486A1 (de) | 1986-12-24 | 1986-12-24 | Vorrichtung zum entkeimen von lebensmittelbehaeltern |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0272538A2 EP0272538A2 (fr) | 1988-06-29 |
EP0272538A3 EP0272538A3 (en) | 1989-12-27 |
EP0272538B1 true 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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2246955A (en) * | 1990-08-16 | 1992-02-19 | Jonathan Hugh Lambert Copus | Destruction of microorganisms by electrical means |
EP0801952A2 (fr) * | 1996-04-20 | 1997-10-22 | Rüdiger Haaga GmbH | Appareil pour la stérilisation des surfaces intérieures de récipients sensibles à la pression |
DE19727942A1 (de) * | 1997-07-01 | 1999-01-07 | Gea Finnah Gmbh | Maschine und Verfahren zum Verschließen von Flaschen mit Verschlußkappen |
Families Citing this family (11)
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 |
SE9003543L (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 |
DE19627119A1 (de) * | 1996-07-05 | 1998-01-15 | Hassia Verpackung Ag | Vorrichtung zum Entkeimen und/oder Sterilisieren von Packstoffbahnen |
DK0951437T3 (da) * | 1997-01-07 | 2001-08-13 | Gea Finnah Gmbh | Fremgangsmåde samt maskine til forberedelse af flasker til påfyldning samt påfyldning af flaskerne |
AUPP427398A0 (en) * | 1998-06-23 | 1998-07-16 | Novapharm Research (Australia) Pty Ltd | Improved disinfection |
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 |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
1986
- 1986-12-24 DE DE19863644486 patent/DE3644486A1/de not_active Withdrawn
-
1987
- 1987-12-08 EP EP87118127A patent/EP0272538B1/fr not_active Expired - Lifetime
- 1987-12-08 DE DE8787118127T patent/DE3776773D1/de not_active Expired - Lifetime
- 1987-12-24 JP JP62325616A patent/JPS63218031A/ja active Pending
- 1987-12-24 US US07/137,660 patent/US4900527A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2246955A (en) * | 1990-08-16 | 1992-02-19 | Jonathan Hugh Lambert Copus | Destruction of microorganisms by electrical means |
GB2246955B (en) * | 1990-08-16 | 1994-04-06 | Jonathan Hugh Lambert Copus | Destruction of microorganisms |
EP0801952A2 (fr) * | 1996-04-20 | 1997-10-22 | Rüdiger Haaga GmbH | Appareil pour la stérilisation des surfaces intérieures de récipients sensibles à la pression |
DE19727942A1 (de) * | 1997-07-01 | 1999-01-07 | Gea Finnah Gmbh | Maschine und Verfahren zum Verschließen von Flaschen mit Verschlußkappen |
WO1999001374A1 (fr) | 1997-07-01 | 1999-01-14 | Gea Finnah Gmbh | Procede et dispositif de fermeture de bouteilles par des bouchons steriles |
DE19727942C2 (de) * | 1997-07-01 | 1999-04-15 | Gea Finnah Gmbh | Maschine und Verfahren zum Verschließen von Flaschen mit Verschlußkappen |
Also Published As
Publication number | Publication date |
---|---|
DE3644486A1 (de) | 1988-07-07 |
US4900527A (en) | 1990-02-13 |
DE3776773D1 (de) | 1992-03-26 |
EP0272538A3 (en) | 1989-12-27 |
EP0272538A2 (fr) | 1988-06-29 |
JPS63218031A (ja) | 1988-09-12 |
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