EP3813891A1 - Ensemble et procédé permettant la décontamination d'objets - Google Patents

Ensemble et procédé permettant la décontamination d'objets

Info

Publication number
EP3813891A1
EP3813891A1 EP19752551.2A EP19752551A EP3813891A1 EP 3813891 A1 EP3813891 A1 EP 3813891A1 EP 19752551 A EP19752551 A EP 19752551A EP 3813891 A1 EP3813891 A1 EP 3813891A1
Authority
EP
European Patent Office
Prior art keywords
chamber
plasma system
discharge
mass flow
mixing chamber
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Withdrawn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
EP19752551.2A
Other languages
German (de)
English (en)
Inventor
Stefan Nettesheim
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.)
Relyon Plasma GmbH
Original Assignee
Relyon Plasma 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 Relyon Plasma GmbH filed Critical Relyon Plasma GmbH
Publication of EP3813891A1 publication Critical patent/EP3813891A1/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Withdrawn legal-status Critical Current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
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/14—Plasma, i.e. ionised gases
    • 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
    • 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
    • A61L2/24—Apparatus using programmed or automatic operation
    • 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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/11—Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
    • 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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/12—Apparatus for isolating biocidal substances from the environment
    • A61L2202/122—Chambers for sterilisation
    • 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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
    • 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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/15—Biocide distribution means, e.g. nozzles, pumps, manifolds, fans, baffles, sprayers
    • 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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/20—Targets to be treated
    • A61L2202/26—Textiles, e.g. towels, beds, cloths

Definitions

  • the present invention relates to an arrangement for the decontamination of
  • the arrangement comprises a chamber in which
  • At least one object to be treated is placed.
  • a plasma system is fluidly connected to the chamber for the object to be treated.
  • the invention further relates to a method for the decontamination of at least one object.
  • Plasma application is also considered a potential alternative to other chemical (e.g. chlorine use) or physical processes (e.g. high pressure, high voltage pulses, ionizing radiation).
  • chemical e.g. chlorine use
  • physical processes e.g. high pressure, high voltage pulses, ionizing radiation.
  • the advantages of the plasma process include: a. high effectiveness at low temperatures (usually ⁇ 70 ° C), targeted and consumption-oriented provision, little influence on the inner product matrix, water or
  • the international patent application WO 1995/009256 A1 deals with the treatment, in particular the cleaning, of surfaces, in particular foil and metal surfaces.
  • the cleaning is achieved in that a dielectric barrier discharge acts on the surface of the film strip.
  • a dielectric barrier discharge acts on the surface of the film strip.
  • European patent EP 1 337 281 B1 describes an enhancement of the cleaning action of plasma.
  • the strengthening of the indirect effect on the surface to be cleaned or sterilized is achieved by admixing additive gas components, such as. B. oxygen, water vapor or noble gases.
  • German patent application DE 100 36 550 A1 relates to a
  • Sterilization process in which the surface to be treated is exposed to a gas discharge.
  • the sterilization is carried out in a hydrogen and oxygen-containing gas atmosphere at a certain pressure.
  • An optimum effect is achieved in particular by humidified air (N 2 + 0 2 + H2O).
  • US patent application US 2015/0038584 A1 discloses a device for the plasma treatment of surfaces of objects. There is a spatial and temporal separation of the plasma process and the exposure of the
  • Disinfection device for plasma disinfection of surfaces with a
  • Plasma generator To generate a disinfecting plasma gas stream, the plasma gas stream is in communication with the plasma generator. At least one partially closed disinfection area is provided, which is designed to receive the surface to be disinfected.
  • Disinfection device has an aerosol generator for generating an aerosol stream containing aqueous particles.
  • the aerosol generator is in communication with the plasma generator in order to direct the plasma gas stream mixed with the aerosol stream in the disinfection area to the surface to be disinfected.
  • German patent application DE 10 2008 037 898 A1 relates to a method and a device for disinfecting or sterilizing packaging material and / or containers and / or filter material, the material or container being treated with a gas generated in a plasma reactor.
  • German patent application DE 10 2015 119 369 A1 relates to a device and a system and a method for treating an object
  • the device is used to treat an object with plasma and comprises a casing device with which an essentially gas-tight receiving space is formed or can be formed, into which an object to be treated can be accommodated.
  • the device comprises a first electrode and a second electrode, the two electrodes being arranged in relation to the casing device such that a plasma can be generated in the receiving space of the casing device when an electrical potential difference is applied to the electrodes.
  • the reactive gas is made from cold plasma at high voltage from a working gas (HVCP).
  • HVCP working gas
  • German patent application DE 10 2014 213 799 A1 discloses one
  • Household refrigeration device with a food processing unit and a method for operating such a household refrigeration device.
  • the household refrigerator is provided with an interior for holding food, which is delimited by walls of an inner container. Furthermore, a food treatment unit is provided, the food treatment unit for acting on a surface of the food introduced in the storage area, in the
  • Household refrigeration device is arranged and designed so that the action is a decontamination of pesticides and / or heavy metals in the food.
  • the German patent application DE 10 2005 061 247 A1 discloses a method and a device for sterilizing food. The food is exposed to at least one atmospheric plasma jet. Through the im
  • Oxidizing agent in a gaseous state in a sterilization chamber or an area to be sterilized A gas plasma is also injected into the
  • the decontamination / sterilization chamber is used to decontaminate sensitive devices and
  • the device can also be used for sterilization in medicine and
  • Atmospheric pressure plasma discharge generated in a He / 0 2 mixture and directed into the area of these objects, which leads to a chemical reaction between the reactive species and organic substances.
  • the plasma gases are recycled through a closed loop system to minimize helium loss and the possibility of aerosol pollutants.
  • the US patent application US 2014/0322096 A1 discloses a disinfection station with a fluid source and one or more plasma generators for generating non-thermal plasma. One or more nozzles spray a mist or fluid flow through plasma generated by the one or more plasma generators to activate the fluid. The liquid is then used to sterilize an object.
  • the international patent application WO 2008/126068 A1 discloses a plasma system with a plug-in cartridge and with a pair of identical, opposing electrode blocks. There is an inlet manifold for process gas. The process gas, such as air, is drawn into the distributor in one flow and flows in one
  • the ionized air flows into the treatment line where it hits the sample to be treated.
  • US patent application US 2013/0071286 A1 discloses a sterilization device using cold plasma for the sterilization of objects, such as. B. medical instruments.
  • the gas is supplied to a plasma chamber where it is excited by one or more electrodes coupled to a pulse source, thereby generating a cold plasma within the plasma chamber.
  • a dielectric barrier is placed between the gas chamber and the electrodes to create a
  • Plasma chambers hold one or more conductive stands connected to the floor of the object to be sterilized.
  • the cold plasma leaves the
  • Plasma chamber where it is returned for subsequent use as a plasma source in subsequent cycles.
  • the invention has for its object to provide an arrangement for the decontamination or sterilization of objects, by means of which the decontamination or sterilization can be carried out effectively and in a resource-saving manner in the shortest possible time.
  • Another object of the invention is to provide an automatic and controlled method for the decontamination or sterilization of objects, the decontamination or sterilization being effective and as short as possible
  • a possible embodiment of the arrangement for the decontamination of at least one object is characterized in that a chamber is provided which is fluidly connected to a plasma system.
  • the object to be treated is in the chamber.
  • a mixing chamber is arranged upstream of the plasma system.
  • the mixing chamber is connected via a line to an inlet of a discharge chamber of the plasma system, so that an input mass flow can be fed to the discharge chamber of the plasma system.
  • a conveyor is arranged in a second feed line from the chamber to the mixing chamber.
  • a circulating mass flow can be conducted from the chamber back to the mixing chamber with the aid.
  • the conveying means is preferably designed as a pump.
  • the advantage of using the circulation mass flow is that reactive substances or substances are repeatedly conveyed through the discharge chamber of the plasma system, so that their concentration increases to a certain equilibrium with each pass.
  • the discharge chamber of the plasma system can be effective with a relatively short or not too long discharge chamber
  • Discharge chamber of the plasma system is designed as a flow reactor which is fed with a gas mixture.
  • a flow reactor which is fed with a gas mixture.
  • the Gas composition and other process parameters, such as B. flow rate, temperature or pressure, a composition of products (reactive
  • Continuous stirred-tank reactor (CSTR) referred to.
  • An outlet is fluidly assigned to the chamber, so that an active mass flow can be removed from the chamber.
  • the funding is a pump, this can be designed as a diaphragm pump.
  • the yield of the discharge chamber of the plasma system or the arrangement according to the invention can be increased considerably.
  • the composition of the products that act on the object can be adjusted within a wide range.
  • a dielectric barrier discharge is used as the discharge type in the plasma system or in the discharge chamber. This can keep performance low.
  • at least one piezoelectric transformer can be provided in the discharge chamber of the plasma system.
  • piezoelectric transformer is connected to the voltage source of the plasma system for generating plasma and the reactive species.
  • Discharge chamber of the plasma system and the chamber with the object must be spatially separated from one another.
  • Components chamber, mixing chamber, recirculation switch, funding,
  • the arrangement can consist of a chamber in which the discharge burns. A recirculating flow is maintained within the chamber. Within a certain period of time turns out to be arrested
  • Boundary conditions an equilibrium of the concentrations.
  • a liquid / aqueous phase and a gaseous phase (air) co-exist in the chamber and if the pH in the liquid / aqueous phase drops into the acidic range, the pH increases
  • the pump can even be omitted.
  • the funding is thus formed solely by the power input of the discharge, so that a
  • a recirculation switch is provided between the plasma system and the chamber.
  • the recirculation switch is fluidly connected to an outlet of the plasma system or the discharge chamber via a line.
  • a first outlet of the recirculation switch is fluid with the circulation mass flow and a second outlet of the recirculation switch is fluid with the chamber via a line
  • An inlet of the discharge chamber is fluidly assigned to the plasma system, so that an input mass flow can be fed to the plasma system.
  • the ratio of freshly supplied media (input mass flow) and returned products (recirculation ratio) can be set.
  • a control and measuring unit is provided for this.
  • the recirculation ratio is between 1:10 and 10: 1, but typically 1: 3.
  • Recirculation ratio is one
  • Recirculation switch provided between the plasma system and the chamber.
  • Heat source / heat sink must be assigned to the plasma system. Likewise, one can for temperature monitoring and / or temperature adjustment of the chamber
  • Heat source / heat sink must be assigned.
  • the chamber can be assigned.
  • Condensate separator must be assigned.
  • a mixing chamber can be fluidly connected to the plasma system via the inlet.
  • the mixing chamber can be designed as an evaporator or humidifier.
  • Mixing chamber can also be assigned a heat source / heat sink.
  • the mixing chamber itself is connected to at least one metering unit via a first feed line and to the conveying means via a second feed line. The from the
  • Dosing units of freshly supplied substances can process gas, e.g. B. air or humidified air.
  • gas e.g. B. air or humidified air.
  • As an additional process gas z. B. steam or oxygen, hydrogen peroxide or an organic steam can be used.
  • a control and measuring unit is assigned to the arrangement for process control, which is communicatively connected to elements of the arrangement.
  • Elements of the arrangement are e.g. B. the voltage source, the recirculation switch, the chamber, the
  • Plasma system the conveyor, the mixing chamber, the heat sources / heat sinks or the at least one dosing unit.
  • Heat sources or heat sinks can be realized in different ways. So z. B. the plasma process or the discharge chamber itself
  • Heat source / heat sink of the chamber itself can be applied.
  • Recirculation mass flow is led from the chamber to the mixing chamber and is fed to the chamber again via the discharge chamber of the plasma system, so that an active mass flow leaving the discharge chamber has an increased concentration of reactive substances; and ⁇ that a control and measurement unit for process control has at least one
  • Discharge chamber of the plasma system the mixing chamber and the conveyor collects data that contribute to the control of the process control.
  • a given mixture of fresh substances is fed to the mixing chamber from at least one dosing unit via a first feed line and the recirculation mass flow from the conveyor via the second feed line.
  • an output mass flow is fed to a recirculation switch, the recirculation switch
  • the recirculation switch is monitored by the control and measuring unit and regulated depending on the process control.
  • the temperature in the mixing chamber, the plasma system or the discharge chamber and the chamber is monitored by means of the control and measuring unit and regulated depending on the process control.
  • a voltage source of the plasma system or the discharge chamber is monitored and regulated by means of the control and measuring unit.
  • the mixing chamber and the chamber are also monitored and regulated by means of the control and measuring unit.
  • the arrangement according to the invention can be used for decontamination or for the sterilization of objects, for cleaning objects, for the degradation of harmful substances and for the degradation of harmful substances, such as. B. organic vapors can be used.
  • Concentrations of H 2 O 2 and a low pH are known for killing germs and oxidizing organic substances. This is also used in medical technology and food technology for decontamination or sterilization.
  • air and water vapor are passed in a suitable manner through an unloading chamber (dielectric barrier discharge) of the plasma system.
  • unloading chamber dielectric barrier discharge
  • various stable species such as B.
  • Nitrogen oxides, ozone and hydrogen peroxide By recirculation (pumping the discharge of the discharge chamber of the plasma system to the entrance of the
  • Discharge chamber of the plasma system the ozone concentration and the concentration of hydrogen peroxide increase.
  • the pH value in the condensate drops into the acidic range.
  • This self-contained circuit can be opened by replenishing air and water and by discharging part of the mass flow at the outlet of the plasma system or the chamber, and can thus be operated continuously.
  • the harmful contaminants can be chemical or biological in nature.
  • harmful impurities can be understood to mean germs, spores, fungi, microorganisms of all kinds (viruses, bacteria, fungi, spores, primitive parasites) as well as organic pollutants, toxic organic compounds or poisons. It is obvious to a person skilled in the art that the above list is not exhaustive.
  • FIG. 2 is a schematic representation of a further embodiment of the invention, wherein the plasma system is designed as a flow reactor;
  • FIG. 3 shows a schematic representation of yet another embodiment of the invention, the plasma system being designed as a flow reactor and the chamber being spatially separated from the plasma system; and
  • Figure 4 is a schematic representation of a flow chart for performing a method for decontamination or sterilization of at least one object.
  • FIG. 1 shows an arrangement 1 for the decontamination or sterilization of
  • the arrangement 1, as indicated here, can consist of a chamber 6 in which a discharge 9 burns.
  • the discharge 9 burns in a plasma system 11 which is arranged inside the chamber 6.
  • the at least one object 4 to be sterilized is located in the chamber 6.
  • the chamber 6 is assigned an inlet 7, via which an input mass flow 7E can be brought into the chamber 6.
  • An outlet 8 is also assigned to the chamber 6, by means of which an active mass flow 8W can be removed from the chamber 6.
  • Inside the chamber 6 is a
  • Circulation mass flow 19 is formed, which leads over the plasma system 11 and the object 4 to be sterilized.
  • the circulation mass flow 19 can be set in the chamber 6 via a conveyor 12.
  • the funding 12 may be a pump or a forced air fan.
  • the circulation mass flow 19 is by the
  • the circulation mass flow 19 can be maintained via convection. Flierzu the chamber 6 is designed in such a way that a uniform convection is formed.
  • Circulation mass flow 19 with reactive substances not only reaches the object 4 to be decontaminated or sterilized, but also increases the proportion of reactive substances per unit volume.
  • the plasma system 11 has according to the structural
  • the concentrations of the reactive substances are balanced. If a liquid / aqueous phase and a gaseous phase (air) coexist in the chamber 6, the pH value drops into the acidic range in the aqueous phase and the concentration of hydrogen peroxide increases to a given equilibrium value.
  • Supply of air and water in a suitable ratio via the inlet 7 turns the chamber 6 (closed reactor) into a flow-through reactor.
  • FIG. 2 shows a schematic illustration of a further embodiment of the invention, the plasma system 11 being designed as a flow reactor and the plasma system 11 being spatially separated from the chamber 6 (not shown here). At least one mixture of different initial fluid and gaseous components can be supplied to the plasma system 11 of the arrangement 1.
  • a single metering unit 23i is provided, which is connected to a mixing chamber 16 via a first feed line 25. Furthermore, the
  • Mixing chamber 16 is connected to the conveying means 12 via a second feed line 27.
  • a single metering unit 23i is shown in the embodiment shown here, this should not be interpreted as a limitation of the invention. As can be seen from the embodiment shown in FIG. 3, more than one metering unit 23i, 23 2 ,... 23N can be assigned to the mixing chamber 16.
  • the plasma system 11 consists of a voltage source 2, which is connected to a
  • Discharge chamber 17 is connected.
  • the discharge chamber 17 is with a
  • a discharge zone 18 is formed in the discharge chamber 17, within which the reactive species are formed.
  • the length L of the discharge chamber 17 is decisive for the formation of the proportion or the concentration of the reactive substances in the mixture leaving the discharge chamber 17.
  • Plasma system 11 or the discharge chamber 17, a gas or substance mixture are supplied.
  • a gas discharge ignites in the discharge zone 18 of the discharge chamber 17.
  • the gas composition and other process parameters such as flow rate, temperature or pressure, a constant composition of products (reactive substances) is created
  • a recirculation switch 5 is arranged downstream of the discharge chamber 17 of the plasma system 11.
  • the recirculation switch 5 is fluid with an outlet 13
  • a first exit 14 of the Recirculation switch 5 is fluidly connected to the circulation mass flow 19.
  • a second outlet 15 of the recirculation switch 5 is fluidly connected to the chamber 6 (not shown here) via a line 28.
  • Circulation mass flow 19 into the discharge chamber 17 of the plasma system 11 the concentration of the reactive substances can be gradually increased.
  • FIG. 3 shows a schematic representation of yet another embodiment of the invention.
  • the discharge chamber 17 of the plasma system 11 is designed as a flow reactor.
  • the chamber 6 for the treatment of the objects 4 is of the
  • Discharge chamber 17 of the plasma system 11 is spatially separated. From the chamber 6 with the object 4, an active mass flow 8W is passed to the outlet 8
  • three metering units 23i, 23 2 , and 23z are connected to the mixing chamber 16.
  • the temperature in the mixing chamber 16 can be adjusted via a heat sink / heat source 30.
  • the input mass flow 7E is fed from the mixing chamber 16 to the inlet 7 of the discharge chamber 17 of the plasma system 11.
  • the plasma process (generating of
  • Plasma in the discharge chamber 17 itself can be a heat source 30, which is used to evaporate a liquid component, which is supplied by at least one of the metering units 23i, 23 2 , and 23z, in the mixing chamber 16.
  • the evaporation process in the mixing chamber 16 would then be a heat sink 30.
  • This relationship has the advantage that a liquid medium (eg water or condensate from the recirculation process) can be evaporated without additional heating power.
  • the discharge in the discharge chamber 17 of the plasma system 11 is generated by an electrical excitation, which is fed via the voltage source 2 of the plasma system 11.
  • the discharge chamber 17 can be heated or cooled by means of a heat source / heat sink 20.
  • the plasma process in the discharge chamber 17 itself can be a heat source 20, which is used to add a liquid component
  • Evaporation is cooled and a liquid medium without additional heating power (e.g. water) can be evaporated.
  • a liquid medium without additional heating power e.g. water
  • the outlet 13 of the discharge chamber 17 of the plasma system 11 is fed to the recirculation switch 5 via a line 26.
  • a second line 27 and the conveying means 12 can be used
  • Recirculation mass flow 19 are returned from the chamber 6 and the recirculation switch 5 to the mixing chamber 16.
  • the second outlet 15 of the recirculation switch 5 is fluidly connected via a line 28 to the chamber 6, in which the object 4 to be treated is located.
  • the chamber 6 can optionally be kept at a constant temperature via a heat source / heat sink 21. If necessary, part of the
  • Active gas and the condensate can be introduced from the chamber 6 into the circulation mass flow 19 via a condensate separator 22.
  • the chamber 6 is flowed through the outlet 8 to the environment.
  • a control and measuring unit 50 is provided for process control, which communicatively (wired and / or wireless) with the elements of the arrangement 1, such as. B. the voltage source 2, the recirculation switch 5, the chamber 6, the plasma system 11, the conveyor 12, the mixing chamber 16, the heat sources / heat sinks 20, 21 or the at least one metering unit 23i, 23 2 , ..., 23N can. It goes without saying for a person skilled in the art that the above counting is not exhaustive. Depending on requirements, elements of the arrangement 1 can be added or removed.
  • FIG. 4 A flow chart of an embodiment of the method according to the invention is shown in FIG. 4.
  • Discharge chamber 17 (flow reactor) is charged with at least one gas mixture or mixture from the at least one mixing chamber 16.
  • Discharge chamber 17 of the plasma system 11 is ignited.
  • Process parameters such as B. flow rate, temperature or pressure, there is a constant composition of substances (products) with different
  • Components from different dosing units 23i, 23 2 , ..., 23N are processed with a mixing chamber 16.
  • the temperature in the mixing chamber 16 can be adjusted via a heat sink / heat source 30.
  • the input mass flow 7E is fed into the discharge chamber 17 of the plasma system 11.
  • Discharge chamber 17 of the plasma system 11 burns the discharges in the discharge zone 18.
  • the discharge is generated by an electrical excitation, which is fed via the voltage source 2.
  • the plasma system 11 or the discharge chamber 17 can be heated or cooled.
  • the electrical discharge in the discharge chamber 17 is preferably ignited by means of at least one piezoelectric transformer 40.
  • the functionality of a piezoelectric is well known and need not be explained again here.
  • the output mass flow 13A is returned to the mixing chamber 16 via the recirculation switch 5 and partly via a conveying means 12.
  • the recirculation mass flow 19 and thus the recirculation ratio depend on the
  • the active mass flow 15W enters from the second outlet 15 of the recirculation switch 5 into a chamber 6 in which the object 4 to be treated is located.
  • the chamber 6 can optionally have a
  • Heat source / heat sink 22 are kept at a constant temperature.
  • part of the active gas and the condensate can be introduced into the recirculation mass flow 19 via a condensate separator 22.
  • An active mass flow 8W can be released to the environment via an outlet 8.
  • the yield of the reactive species generated in the discharge chamber 17 of the plasma system 11 can be considerably increased by the control and measuring unit 50 and the principle of recirculation.
  • Mixtures can be adjusted in a wide range by means of the mixing chamber 16.
  • a dielectric barrier discharge is used as the discharge type

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

Abstract

L'invention concerne un ensemble (1) et un procédé permettant la stérilisation complète d'au moins un objet (4). À cet effet, il est prévu une chambre (6) dans laquelle la stérilisation de l'objet (4) est effectuée. Un système à plasma (11) destiné à générer des espèces réactives est associé à la chambre (6). Un moyen de refoulement (12) est disposé de telle sorte qu'un flux massique en circulation (19) s'écoule à travers le système à plasma (11) et à travers la chambre (6), en passant par au moins un objet (4), puis retourne vers le moyen de refoulement (12). Un orifice de sortie (8) est associé à la chambre (6) de façon à assurer une communication fluidique, de manière telle qu'un flux massique actif (8W) peut être évacué de la chambre (6).
EP19752551.2A 2018-06-26 2019-06-12 Ensemble et procédé permettant la décontamination d'objets Withdrawn EP3813891A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018115300.7A DE102018115300A1 (de) 2018-06-26 2018-06-26 Anordnung und Verfahren zur Dekontamination von Objekten
PCT/IB2019/054898 WO2020003039A1 (fr) 2018-06-26 2019-06-12 Ensemble et procédé permettant la décontamination d'objets

Publications (1)

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EP3813891A1 true EP3813891A1 (fr) 2021-05-05

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EP19752551.2A Withdrawn EP3813891A1 (fr) 2018-06-26 2019-06-12 Ensemble et procédé permettant la décontamination d'objets

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US (1) US20210106705A1 (fr)
EP (1) EP3813891A1 (fr)
DE (1) DE102018115300A1 (fr)
WO (1) WO2020003039A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019106767A1 (de) * 2019-03-18 2020-09-24 Relyon Plasma Gmbh Anordnung zur Dekontamination einer Oberfläche von Objekten und Verfahren zur Dekontamination einer Oberfläche von Objekten
US20220395002A1 (en) * 2021-06-09 2022-12-15 Jo{hacek over (z)}ef Stefan Institute Method for deactivation of aflatoxins
CN114452418B (zh) * 2022-04-11 2022-08-05 雷神等离子科技(杭州)有限公司 一种基于高能离子回授技术的等离子消毒系统及方法

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4332866C2 (de) 1993-09-27 1997-12-18 Fraunhofer Ges Forschung Direkte Oberflächenbehandlung mit Barrierenentladung
US6228330B1 (en) * 1999-06-08 2001-05-08 The Regents Of The University Of California Atmospheric-pressure plasma decontamination/sterilization chamber
DE10036550A1 (de) 2000-02-25 2001-09-06 Fraunhofer Ges Forschung Sterilisationsverfahren
EP1303314A1 (fr) * 2000-07-26 2003-04-23 Jacques Protic Procede de sterilisation et appareil correspondant
DE50109333D1 (de) 2000-11-29 2006-05-11 Fraunhofer Ges Forschung Verfahren und vorrichtung zur oberflächenbehandlung von objekten
US7045096B2 (en) 2001-12-31 2006-05-16 Argentara Five, Inc. Sterilization and detoxification of confined spaces
US6932782B2 (en) 2002-07-01 2005-08-23 Michael P. Ferraioli Flexible splint
DE102005061247A1 (de) 2005-12-20 2007-06-21 Peter J. Danwerth Verfahren und Vorrichtung zum Entkeimen von Lebensmitteln
EP2135493A1 (fr) * 2007-04-11 2009-12-23 University of Limerick Systeme a plasma
US7588750B2 (en) * 2007-07-03 2009-09-15 Amarante Technologies, Inc. Systems and methods for generating and storing ozone
DE102008037898B4 (de) 2008-02-13 2022-06-02 The Coca-Cola Co. Verfahren und Vorrichtung zur Sterilisation von Verpackungsmaterial und/oder Behältern, diesbezügliche Verwendung von Plasma sowie entsprechend behandeltes Material oder Behälter
JP2010200947A (ja) * 2009-03-03 2010-09-16 Noritsu Koki Co Ltd 滅菌装置
US8062590B1 (en) * 2011-03-21 2011-11-22 Ricciardi Jonathan J Methods and apparatuses for applying agent to objects
US9623132B2 (en) * 2010-05-07 2017-04-18 Leibniz-Institut Fuer Plasmaforschung Und Technologie E.V., Inp Greifswald Plasma-generated gas sterilization method
CA2807381A1 (fr) 2010-08-03 2012-02-09 Drexel University Materiaux utilises en desinfection produits par plasma non thermique
EP2756516B1 (fr) * 2011-09-15 2018-06-13 Cold Plasma Medical Technologies, Inc. Dispositifs de traitement par plasma froid et procédés associés
US20130272929A1 (en) * 2012-04-06 2013-10-17 EP Technologies LLC Sanitization station using plasma activated fluid
DE102013109777B4 (de) 2013-09-06 2015-05-21 Inp Greifswald E.V. Desinfektionsvorrichtung
DE102014213799A1 (de) 2014-07-16 2016-01-21 BSH Hausgeräte GmbH Haushaltskältegerät mit einer Lebensmittel-Behandlungseinheit sowie Verfahren zum Betreiben eines derartigen Haushaltskältegeräts
US10194672B2 (en) 2015-10-23 2019-02-05 NanoGuard Technologies, LLC Reactive gas, reactive gas generation system and product treatment using reactive gas
DE102015119369A1 (de) 2015-11-10 2017-05-11 INP Leipniz-Institut für Plalsmaforschung und Technologie e.V. Vorrichtung, System und Verfahren zur Behandlung eines Gegenstandes mit Plasma
CN109862920A (zh) * 2016-06-17 2019-06-07 斯特里弗医疗股份有限公司 灭菌、消毒、卫生处理、净化和治疗装置、系统以及方法

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WO2020003039A1 (fr) 2020-01-02
US20210106705A1 (en) 2021-04-15
DE102018115300A1 (de) 2020-01-02

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