EP0412977A1 - Procede et dispositif de desinfection d'objets - Google Patents

Procede et dispositif de desinfection d'objets

Info

Publication number
EP0412977A1
EP0412977A1 EP19890904792 EP89904792A EP0412977A1 EP 0412977 A1 EP0412977 A1 EP 0412977A1 EP 19890904792 EP19890904792 EP 19890904792 EP 89904792 A EP89904792 A EP 89904792A EP 0412977 A1 EP0412977 A1 EP 0412977A1
Authority
EP
European Patent Office
Prior art keywords
ozone
room
catalyst
lamp
objects
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Withdrawn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
EP19890904792
Other languages
German (de)
English (en)
Inventor
Dieter Kleinschmidt
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
Priority claimed from DE19883813793 external-priority patent/DE3813793C1/de
Application filed by Individual filed Critical Individual
Publication of EP0412977A1 publication Critical patent/EP0412977A1/fr
Withdrawn legal-status Critical Current

Links

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
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/20—Gaseous substances, e.g. vapours
    • A61L2/202—Ozone
    • 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
    • A61L2/10—Ultraviolet radiation
    • 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
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/18—Radiation
    • A61L9/20—Ultraviolet radiation

Definitions

  • the invention relates to a method and a device for disinfecting objects in a tightly closable room or the tightly closable room itself with at least one UV lamp and a catalyst device which can be switched on and off for the reduction of ozone formed by the UV lamp.
  • Such methods and devices can also be used to disinfect objects of complex shape, in particular with cavities, into which germs can penetrate from the outside, but which are inaccessible to external rays, without the use of heat and without harmful effects on health.
  • the device is simple and very effective at the same time because, with a single device, namely the ozone-forming UV emitter, it optimally exploits two different bactericidal effects, namely that of UV radiation and that of ozone, since the treatment is tight in one lockable room from which the ozone cannot escape. It concentrates during the treatment and also penetrates into corners, angles and cavities where bacteria, fungi or other germs would be unreachable for the UV radiation.
  • the proposal according to the invention achieves an improvement in the disinfection effect, particularly in the case of porous, cracked, and generally substances or objects with cavities. Very good results have been obtained e.g. B. achieved in the disinfection of feed for laboratory animals.
  • the positive effect of the above proposal is based on the fact that the alternating compression and dilution of the sterilizing gas creates a pumping effect which enables the penetration of the ozone into the smallest gaps, pores and capillaries.
  • the penetration depth and thus the sterilizing effect of the ozone depends on the pressure difference and the number of cycles. At Versucr. ⁇ r. was good experience with about four to ten cycles. ge made.
  • the pressure difference should be about 500 mbar.
  • the device according to the invention for carrying out the new method is characterized in that a suction channel with a vacuum pump and a catalyst for the depletion of ozone is present between the tightly closable space and the outside atmosphere.
  • the impingement surfaces can unregelmäßiqer Ober ⁇ with ozone in addition by at least one geo ⁇ äse for circulating the ozone without the intervention of the catalyst is promoted.
  • a movable catalyst device in the form of a tube with catalyst and blower can be used for the method according to the invention, in which the tube is essentially as long as one or more UV radiation tubes and together with these between two stands with inlet and outlet Outlet openings for gas pumped through the pipe by means of the blower is attached.
  • the fan is arranged in the tube in this case. This has the advantage of a shorter overall length.
  • the mobile unit fits into smaller incubators and offers better illumination with UV radiation, since the stands can be very narrow on both sides.
  • Fig. 1 shows a longitudinal section through a mobile
  • Disinfectant device for insertion in a tightly lockable. Cabinet is intended;
  • FIG. 2 shows a cross section through the device according to FIG. 1;
  • FIG. 3 shows a longitudinal section through a material lock with a permanently installed device for disinfecting
  • FIG. 4 shows a simplified cross section through the material lock according to FIG. 3;
  • FIGS. 3 and 4 shows a front view of the material lock according to FIGS. 3 and 4;
  • Fig. 6 u. 7 views corresponding to Figures 1 and 2 of a modified embodiment.
  • the mobile device for disinfection shown in FIGS. 1 and 2 consists in the example of a left cuboid stand 10 and a right, also cuboid stand 12. With the stands 10, 12 aligned in parallel, three tubular ones extend between them ÜV-Strannlerrohr ⁇ 14. A pipe 16 screwed to the IG ur. ⁇ 12 stands via end flanges ensures, on the one hand, a firm mechanical connection of the parts mentioned and, on the other hand, forms a flow channel which closes from the air inlet openings (not shown) in the stand 12 also not shown air outlet openings in the stand 10 leads.
  • a blower 18 mounted in the stator 10 and driven by an electric motor If a blower 18 mounted in the stator 10 and driven by an electric motor is switched on, it sucks air from the surrounding space through the air inlet opening in the stator 12 attracts them through the pipe 16 over a catalyst 20 present there, for example in the form of granules, and ejects them back into the surrounding space through the air outlet openings in the stand 10. Ozone contained in the air is converted into atmospheric oxygen 0 2 by the catalyst 20.
  • the timing of the UV lamps 14, the blower 18, any desired indicator and warning lights and locking devices on cabinet doors is carried out by a sequence control indicated at 22, which allows the parameters of the disinfectant treatment to be preset.
  • the mobile device according to Figures 1 and 2 can temporarily e.g. in a CO 2 incubator, a lockable la inflow bank or another tightly lockable cabinet in which objects and / or the inner walls are to be disinfected. After the treatment, the device according to FIGS. 1 and 2 can be removed from the cabinet and inserted in another cabinet.
  • FIGS. 3 to 5 show a cupboard - in this case, a material lock - with a permanently installed device for disinfecting.
  • the material lock is installed, for example, in the wall between two building rooms and is accessible from both building rooms through two opposite doors 24 and 26.
  • UV lamp tubes 14 are attached to the doors as well as to the side walls, the floor and the ceiling.
  • the interior designated 28 is lined on all sides with reflective metal sheet in order to reflect as high a portion of the UV radiation as possible onto the objects to be disinfected. These rest during the treatment, for example, on wire mesh floors (not shown), which are, for example, on strips on the side walls of the interior 28, can be easily removed and can be used again at another level.
  • the catalyst device according to FIG. 4 is located next to the interior 28. It consists of a flow channel 30 which is connected to the top of the interior 28 via air inlet openings in a side wall of the interior 28 and opens into it again at the bottom through air outlet openings.
  • a motor-blower unit is shown at 32 which, when switched on, circulates the gas volume in the interior 28 through the flow channel 30.
  • the direction of flow can also be reversed. It is only essential that after a certain circulation time the entire gas volume of the interior 28 is circulated through the flow channel 30 one or more times and thereby came into contact with a catalyst indicated at 34, through which ozone in atmospheric oxygen 0 ? is converted.
  • a line 36 leading to the outside is provided, in which a catalytic converter 38 and also an activated carbon filter 40 and a sterile filter 42 are also arranged.
  • the above-mentioned UV lamps 14 are preferably low-pressure mercury vapor discharge lamps which, in terms of size and power, correspond to the hot cathode lamps available under the Sterisol brand, but are not produced with the special glass used in them, which the Ozone formation prevented.
  • the UV lamps 14 of the device according to the invention regardless of their design in detail, are to be designed specifically so that ozone is formed outside the lamps.
  • the catalysts 20 and 34 described above can contain any material by which ozone is effectively converted to oxygen 0 2 .
  • the catalyst on an aluminum support contains approximately 0.1% palladium and 0.2% platinum.
  • FIGS. 6 and 7 show a mobile device for disinfection similar to FIGS. 1 and 2, which is even easier to manufacture.
  • a blower 60 is arranged between UV lamp tubes 62.
  • the length of the device can thus be reduced substantially to the length of the UV radiation tubes 62, which are now the only dimension-determining elements. This is particularly advantageous if, for. B. the incubators are relatively small and should be illuminated over a large area.
  • the device according to FIGS. 6 and 7 consists of left and right stands 64 which are held together by spacer bars 66. On the left side, the stand 64 is shown in section. It consists of only three molded plastic parts, namely a housing
  • the housing 68 with the spacer bars 66 assumes a carrier function for the entire device.
  • the cover 70 and the corners 72 only take on covering functions, the right and left covers 70 being connected to three bars 84 and being screwed by means of screws 86. As a result, the corners 72 are held at the same time. To replace defective UV lamps, all that is required is to loosen the screws 86. This allows the covers 70 and corners 72 to be removed and enables easy access to the holder 80.
  • the rods 66 and 84 are not only intended as fastening rods, but at the same time have a protective function due to the star-like arrangement around the UV lamps.
  • the fan 60 When the fan 60 is switched on, it sucks air from the surrounding space through air inlet openings 88 and then presses it through slots 90, the pipe 74 and via the catalytic converter 76. This air exits into the surrounding space on the other side .
  • the air inlet openings 88 arranged on the side and on the front side make it possible for the device to be independent of the position and thus also to be placed on edge.
  • Another advantage is that the plastic parts 68, 70, 72 forming the uprights 64 are independent of the emitters 62 used in each case, because with other lengths of the UV emitters 62 only a tube 74 and rods 66, 84 needed.
  • a single or multiple pressure change is provided in the treatment room, as is shown schematically in FIG. 8.
  • the procedure is preferably such that the pressure in the treatment room 28 is reduced by approximately 500 mbar even when the UV lamps are switched on. As a result, air is sucked out of the pores and inner cavities of the objects to be disinfected.
  • a pressure equalization then takes place, that is to say the pressure in space 28 again by approximately 500 mbar increases, ozone is pressed into the pores and internal cavities of the objects to be disinfected.
  • the process described can be repeated one or more times during the time t1 while the UV lamp is switched on, a fan 91 arranged in a suitable place in the space 28 preferably causing the ozone to circulate , and in the exemplary embodiment several pressure changes of the order mentioned take place even after the UV emitters have been switched off.
  • These pressure changes can be carried out both before and during the time t2 after switching on the fan 18 or 32 or 60, which causes the catalytic decomposition of the ozone.
  • This valve and a shut-off valve 94 at the outlet 92 of the suction channel can be opened or closed alternately or both can also be kept closed for a certain period of time if the pressure in the space 28 is at a certain level during this period should be kept. It is understood that the pressure changes according to FIG. 8 can be generated by manual actuation of the valves mentioned or by means of an automatic control and that the suction channel and the ventilation channel not only on a cabinet in which an ozone generator according to FIG. 1 or 6 is used, but also in a cabinet according to FIGS. 3 to 5 can be present, either in addition to the flow channel 30 and Line 36 or in combination of the suction channel with the flow channel 30 and the ventilation channel with the line 36.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

Un procédé permet de désinfecter des objets dans une chambre hermétiquement fermable ou la chambre elle-même au moyen d'au moins un émetteur de rayonnements UV (62) et d'un catalyseur connectable et déconnectable (60, 74, 76) qui sert à décomposer l'ozone généré par l'émetteur de rayonnements UV (62, 64). Afin d'améliorer l'effet de stérilisation, on fait descendre puis monter une ou plusieurs fois la pression dans la chambre pendant le traitement des objets ou de la chambre avec de l'ozone. On accélère et intensifie ainsi l'échange de gaz dans les pores et dans les cavités internes des objets à désinfecter. On peut utiliser pour générer les rayonnements UV et l'ozone une unité mobile qui comprend deux montants (64) entre lesquels s'étendent plusieurs tubes de rayonnements UV (62), un agencement catalyseur tubulaire (60, 74, 76) et des barres de protection (66, 84). Le ventilateur (60) de l'agencement catalyseur est de préférence agencé dans le tuyau (74).
EP19890904792 1988-04-23 1989-04-20 Procede et dispositif de desinfection d'objets Withdrawn EP0412977A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883813793 DE3813793C1 (en) 1987-06-13 1988-04-23 Method and device for disinfecting articles
DE3813793 1988-04-23

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP19920105193 Division EP0493372A3 (en) 1988-04-23 1989-04-20 Method and apparatus for disinfecting articles

Publications (1)

Publication Number Publication Date
EP0412977A1 true EP0412977A1 (fr) 1991-02-20

Family

ID=6352757

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19890904792 Withdrawn EP0412977A1 (fr) 1988-04-23 1989-04-20 Procede et dispositif de desinfection d'objets
EP19920105193 Withdrawn EP0493372A3 (en) 1988-04-23 1989-04-20 Method and apparatus for disinfecting articles

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19920105193 Withdrawn EP0493372A3 (en) 1988-04-23 1989-04-20 Method and apparatus for disinfecting articles

Country Status (4)

Country Link
EP (2) EP0412977A1 (fr)
AU (1) AU3430789A (fr)
DE (1) DE8813423U1 (fr)
WO (1) WO1989010145A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4426648A1 (de) * 1994-07-16 1996-01-18 Bundschuh Gerhard Dr Verfahren und Vorrichtungen zur Behandlung von Nahrungs-, Genuß- und Futtermitteln
US6365113B1 (en) * 1998-01-28 2002-04-02 Jon L. Roberts Trash receptacle sterilization method and apparatus
CA2369823C (fr) * 1998-04-17 2007-09-18 Tommy Busted Dispositif et procede de sterilisation d'un element
DE20021236U1 (de) * 2000-12-15 2001-03-08 Lifelight GmbH, 68309 Mannheim Vorrichtung zum Reinigen von Luft
ES2242481B1 (es) * 2003-01-29 2007-01-01 Ozotecnic, S.L. Equipo para la esterilizacion de habitaculos y de sistemas de aireacion de vehiculos mediante ozonizacion.
US8662705B2 (en) 2010-03-30 2014-03-04 Virwall Systems, Inc. Flexible ultraviolet LED sanitizing apparatus
US11679171B2 (en) 2021-06-08 2023-06-20 Steribin, LLC Apparatus and method for disinfecting substances as they pass through a pipe

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1087800A (fr) * 1953-04-10 1955-02-28 Appareil à stérilisation
FR1388709A (fr) * 1963-09-27 1965-02-12 Lampe désodorisante, germicide et productrice d'oxygène à action réglable
DE2063762B2 (de) * 1970-12-24 1975-03-06 Draegerwerk Ag, 2400 Luebeck Filteranlage zur Entfernung von Bakterien aus der Belüftungsluft
US4309388A (en) * 1980-02-04 1982-01-05 Tenney Robert I Ozone sterilizing apparatus
FR2515963A1 (fr) * 1981-11-10 1983-05-13 Cuypers Joseph Appareil pour la sterilisation de petits instruments medicaux ou para-medicaux
IT1201997B (it) * 1985-11-11 1989-02-02 Consiglio Nazionale Ricerche Procedimento per la sanitizzazione di contenitori e materiali di confezionamento, particolarmente per uso farmaceutico e cosmetico, ed impianto per effettuare il procedimento
US4973449A (en) * 1986-03-10 1990-11-27 Mdt Corporation Sterilization method
FR2608431B1 (fr) * 1986-12-23 1989-11-17 Sallaz Jean Louis Enceinte mobile de transport et de decontamination pour materiels radiologiques medicaux chirurgicaux ou de laboratoire ou autres
DE3719860C1 (en) * 1987-06-13 1988-11-24 Dieter Kleinschmidt Device for disinfecting articles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8910145A1 *

Also Published As

Publication number Publication date
EP0493372A3 (en) 1992-12-02
WO1989010145A1 (fr) 1989-11-02
AU3430789A (en) 1989-11-24
EP0493372A2 (fr) 1992-07-01
DE8813423U1 (de) 1989-01-05

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