EP0579680B1 - Device for the production of defined ionised gases or ionisation products - Google Patents

Device for the production of defined ionised gases or ionisation products Download PDF

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Publication number
EP0579680B1
EP0579680B1 EP92908303A EP92908303A EP0579680B1 EP 0579680 B1 EP0579680 B1 EP 0579680B1 EP 92908303 A EP92908303 A EP 92908303A EP 92908303 A EP92908303 A EP 92908303A EP 0579680 B1 EP0579680 B1 EP 0579680B1
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electrode
outer electrode
appliance according
gases
gas
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German (de)
French (fr)
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EP0579680A1 (en
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Naum Goldstein
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Goldstein Naum
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GOLDSTEIN Naum
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere

Definitions

  • the invention relates to a device for generating defined, ionized gases or ionization products and their lossless transport.
  • Air ions Research into the biological activities of charged particles in air ions indicates a certain potential of their general biological, physiological and therapeutic effects. So far it has been assumed that the biological action of the air ions is achieved by regulating the membrane charge of the erythrocytes and acting on the central regulatory systems down to the brain and the glands of internal secretion.
  • the use of air ions is known, for example, for diseases such as bronchial asthma, bronchitis, pneumonia, hypertension, etc.
  • FR-A-2 202 625 describes a method with which gaseous ions can be generated by a corona discharge.
  • the large diameter of the supply tube creates a large volume flow. The consequence of this is that only relatively low oxygen anion radical generation can take place.
  • a relatively high voltage is required, which contains a comparatively large amount of harmful by-products, e.g. Generates ozone. In this process, nitrogen must therefore first be ionized, with which the oxygen is then subsequently ionized.
  • a device for producing ionized gases which has a tubular outer electrode and an inner electrode.
  • the inner electrode is heated with alternating current and there is a potential difference between it and the outer electrode.
  • EP-A-0 029 421 a device is known from EP-A-0 029 421, in which a potential difference is generated between the inner electrode and electrodes within the outer electrode.
  • the object of the invention is therefore to create a device for generating defined, ionized gases or ionization products, in particular oxygen anion radicals, in which the production of harmful by-products is minimized at the same time, and to transport them almost without loss.
  • the resulting defined ionized gases or gaseous products have a previously unknown physiological effectiveness. This is attributed in particular to the relatively high concentration of oxygen anion radicals generated. No or only small amounts of by-products, e.g. Ozone.
  • FIG. 1 shows a device according to the invention for generating defined, ionized gases or ionization products, in which a gas stream 1 to be ionized enters a tubular, cylindrical hollow electrode 3.
  • a high voltage supplied by a voltage source 2 is applied to the one-piece hollow electrode 3.
  • This high voltage energizes the gas molecules flowing through before they reach the area of the inner electrode 4. Due to the previous excitation, the corona voltage can be reduced to 2.5 to 4 kV, whereby the formation of by-products, e.g. Ozone, values that are essentially not higher than those found in nature.
  • the actual corona discharge takes place at the inner electrode 4.
  • the outer electrode 3 and the inner electrode 4 are on the same or the inner electrode is at a lower, negative electrical potential. At least a portion of the inner electrode 4 is close to the gas outlet opening 9 of the outer electrode 3.
  • the inner electrode 4 is formed in one piece and consists of a wire-shaped area 5 and a needle-shaped area 6, which lies close to the gas outlet opening 9, in order to keep the concentration loss of ionized gas molecules as small as possible.
  • the size and shape of the inner electrode 4 is selected in relation to the inner region of the tubular outer electrode 3 so that it can ionize a large proportion of the gas molecules flowing through, so that defined ionization products are formed.
  • the concentration and the qualitative composition can also be controlled via the flow velocity of the gas molecules. The lower the flow rate in the specified range, the higher the concentration of the ionized products, e.g. Oxygen anion radicals If the potential difference between the outer electrode 3 and the inner electrode 4 is negative, the inner electrode 4 is held by supports 7 made of insulating material. To protect against electric shock, the outer electrode is covered with an insulating touch protection 8.
  • FIGS. 2 and 3 describe a device for generating defined, ionized gases or ionization products, which consists of a tubular, cylindrical hollow electrode 3 and two internal electrodes each.
  • One inner electrode 10 is arranged in each case in the gas inlet area, the other inner electrode 11, 12 is arranged in the gas outlet area.
  • the input inner electrode 10 serves for additional pre-excitation of the gas molecules.
  • the generation of defined ionization products can be achieved in a wide flow rate range of the gases, the formation of by-products still not exceeding the values occurring in nature.
  • Due to the conical shape of the outer electrode 3 in FIG. 3, a different flow rate at the inner input electrode 10 and the output electrode 12 is achieved.
  • the relationships of the input and output surfaces of the hollow electrode 3 according to FIG. 3 are in a range up to max. 10: 1.
  • a ratio of 2: 1 and 3: 1 has proven to be particularly advantageous.
  • the internal electrodes 4 are designed either as a metal tip or as a wire mesh.
  • a wire mesh instead of a wire mesh, of course, any equivalent embodiment can be selected.
  • FIGS. 4 and 4a A further embodiment of the inner electrode as a wire mesh can be seen from FIGS. 4 and 4a.
  • the wire mesh is formed in that individual wires are angularly offset in several parallel planes.
  • the number of wires used is variable.
  • four wires 13 a, b, c, d
  • Figure 4a shows a top view of the resulting shape of the wire mesh.
  • the diameter of the wire that forms the wire mesh is preferably in the range between 0.05 and 0.3 mm.
  • the individual wires which each form an electrode system, are advantageously arranged perpendicular to the gas stream 1.
  • FIG. 5 describes a further embodiment of the inner electrode 4.
  • the inner electrode consists of a base 14 and a cylindrical electrode body, which can have, for example, a round or pointed end.
  • the base 14 is connected to the outer electrode 3 on the gas inlet side and has openings 16 through which the gas flow into the outer electrode 3 entry.
  • FIG. 6 designates a device for ionizing gases, in which the outer electrode 3 is not formed in one piece, but is divided into several electrode areas.
  • an outer electrode with three electrode regions 17, 18, 19 is used.
  • the gas 1 to be ionized enters the outer electrode area 18 at the entrance area. This is connected to a voltage source U1.
  • the gas molecules excited in this way pass through a first grid-shaped or perforated inner electrode 21 and arrive in a second selection electrode area 19.
  • a voltage U 2 different from U 1 is applied to this area.
  • the gas mixture flows through a third outer electrode region 20.
  • a second inner electrode 22 mounted on the output side is arranged in this region.
  • the area 20 is supplied with a voltage U3.
  • All outer electrode regions 18, 19, 20 are separated from one another by insulation bodies 23.
  • insulation bodies 23 For example, Teflon (trademark) is used as insulation material.
  • the pre-excitation of the gas can be improved even further, for example by a higher negative potential with U1> U2> U3 or U2> U3.
  • metal in particular platinum, gold or copper
  • platinum is preferably used as the electrode material.
  • cobalt-salt-coated or cobalt-alloyed electrodes ie needles, grids, chips and inner surfaces. Cobalt salts decompose ozone to oxygen.
  • oxygen is preferably used as the gas.
  • an oxygen or air volume flow of less than 5 ml / min, preferably of 1-3 ml / min is sufficient if a hollow electrode with a cross-sectional surface of 1 mm2 is used.
  • the device for ionizing gases according to the invention can also be used for sterilization.
  • the outer electrode 3 On the side opposite the entry area, the outer electrode 3 is closed off by a wall 25.
  • the outer electrode 3 is connected to a voltage source 3, which supplies a high voltage of 5 to 12 kV.
  • a fibrous inner electrode 26 is attached at one end to a support 7 and at the other end to the wall 25. Carbon is preferably selected as the material of the inner electrode 26, so that only low ozone formation and metal emissions can arise at the high voltage used.
  • a plurality of holes 27 are arranged in the longitudinal area of the hollow electrode 3.
  • the incoming gas is ionized on the inner electrode 26.
  • the finished ionization product exits through holes 27.
  • the ratio of the diameter of the electrode to each hole is preferably between 1: 1.5 and 1: 4. Instead of a row of holes, an outlet slot or an outlet opening equivalent thereto can also be provided.
  • the device is used, for example, for the sterilization of food and possibly packaging containers.
  • Another preferred area of application is the sterilization and sterile maintenance of medical and dental instruments, medical workplaces and hollow bodies, which e.g. be used in medicine.
  • the device can also be used to sterilize the gas environment in the production of cosmetics.
  • the device for the sterilization of organic material which is impaired by the action of microorganisms in its useful properties.
  • a spray device (not shown) in the area of the gas outlet opening 9 or the outlet holes 27 of the outer electrode 3.
  • a spray device (not shown) in the area of the gas outlet opening 9 or the outlet holes 27 of the outer electrode 3.
  • Such a device is preferably used in sterilization cabinets.
  • a hydrogen peroxide solution which is mixed with the gas stream containing the ionization product with the aid of the spray device and whose concentration is preferably less than 3%, the sterilization effect can be increased.

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  • Physical Or Chemical Processes And Apparatus (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The invention relates to a device for the production of defined ionised gases or ionisation products. To provide such a device in which the production of harmful by-products is minimised, it is proposed that the device have the following features: a tubular hollow electrode connectable to the gas supply line as an external electrode (3); at least one internal electrode (6) which affects the entire hollow space of the external electrode (3) in the region of its arrangement; a potential difference at the internal electrode (6) and the external electrode (3) of 2 to 3 kV, whereby a potential difference of 1 kV at the most is possible between the internal and external electrodes; and a gas flow rate of under 100 ml/min/mm?2.

Description

Die Erfindung betrifft eine Vorrichtung zum Erzeugen definierter, ionisierter Gase bzw. von Ionisationsprodukten und deren verlustfreiem Transport.The invention relates to a device for generating defined, ionized gases or ionization products and their lossless transport.

Die Forschungen der biologischen Aktivitäten geladener Teilchen der Luftionen weisen auf ein bestimmtes Potential ihrer allgemeinbiologischen, physiologischen und therapeutischen Wirkung hin. Bisher wurde angenommen, daß die biologische Wirkung der Luftionen mittels Regulierung der Membranladung der Erythrozyten und der Einwirkung auf die zentralen Regulierungssysteme bis hin zum Gehirn sowie den Drüsen der inneren Sekretion verwirklicht wird. Bekannt ist die Anwendung von Luftionen beispielsweise bei Erkrankungen wie Bronchialasthma, Bronchitis, Lungenentzündung, Hypertonie etc.Research into the biological activities of charged particles in air ions indicates a certain potential of their general biological, physiological and therapeutic effects. So far it has been assumed that the biological action of the air ions is achieved by regulating the membrane charge of the erythrocytes and acting on the central regulatory systems down to the brain and the glands of internal secretion. The use of air ions is known, for example, for diseases such as bronchial asthma, bronchitis, pneumonia, hypertension, etc.

Es ist bereits bekannt, Sauerstoffanionenradikale herzustellen und zu untersuchen. Die Herstellungsverfahren sind jedoch zumeist ungeeignet für therapeutische und physiologische Anwendungen.It is already known to produce and study oxygen anion radicals. However, the manufacturing processes are mostly unsuitable for therapeutic and physiological applications.

In der FR-A-2 202 625 ist ein Verfahren beschrieben, mit dem gasförmige Ionen durch eine Korona-Entladung erzeugt werden können. Durch den großen Durchmesser der Zuleitröhre entsteht jedoch ein großer Volumenstrom. Dieser hat zur Folge, daß nur relativ geringe Sauerstoffanionenradikalerzeugung stattfinden kann. Außerdem ist infolge der hohen Strömungsgeschwindigkeit eine relativ hohe Spannung erforderlich, die eine vergleichbar große Menge an schädlichen Nebenprodukten, z.B. Ozon erzeugt. Bei diesem Verfahren muß daher zunächst Stickstoff ionisiert werden, mit dem dann anschließend der Sauerstoff ionisiert wird.FR-A-2 202 625 describes a method with which gaseous ions can be generated by a corona discharge. However, the large diameter of the supply tube creates a large volume flow. The consequence of this is that only relatively low oxygen anion radical generation can take place. In addition, due to the high flow rate, a relatively high voltage is required, which contains a comparatively large amount of harmful by-products, e.g. Generates ozone. In this process, nitrogen must therefore first be ionized, with which the oxygen is then subsequently ionized.

Werden ionisierte Produkte über lange Strecken transportiert, tritt oftmals ein hoher Ionenkonzentrationsverlust auf.If ionized products are transported over long distances, there is often a high loss of ion concentration.

Aus der US-A-2 018 434 ist eine Vorrichtung zur Herstellung ionisierter Gase bekannt, die eine rohrförmige Außenelektrode und eine Innenelektrode aufweist. Dabei wird die Innenelektrode mit Wechselstrom erhitzt und zwischen dieser und der Außenelektrode liegt eine Potentialdifferenz.From US-A-2 018 434 a device for producing ionized gases is known which has a tubular outer electrode and an inner electrode. The inner electrode is heated with alternating current and there is a potential difference between it and the outer electrode.

Schließlich ist aus der EP-A-0 029 421 eine Vorrichtung bekannt, bei der zwischen der Innenelektrode und Elektroden innerhalb der Außenelektrode eine Potentialdifferenz erzeugt wird. Aufgabe der Erfindung ist daher die Schaffung einer Vorrichtung zur Erzeugung definierter, ionisierter Gase bzw. von Ionisationsprodukten, insbesondere von Sauerstoffanionenradikalen, bei der gleichzeitig die Produktion schädlicher Nebenprodukte minimiert wird, sowie deren nahezu verlustfreier Transport.Finally, a device is known from EP-A-0 029 421, in which a potential difference is generated between the inner electrode and electrodes within the outer electrode. The object of the invention is therefore to create a device for generating defined, ionized gases or ionization products, in particular oxygen anion radicals, in which the production of harmful by-products is minimized at the same time, and to transport them almost without loss.

Die Aufgabe wird erfindungsgemäß durch den kennzeichnenden Teil des Anspruchs 1 gelöst. Weitere vorteilhafte Ausbildungen der Erfindung ergeben sich aus den Neben- und Unteransprüchen.The object is achieved by the characterizing part of claim 1. Further advantageous developments of the invention result from the subclaims and subclaims.

Die entstehenden definierten ionisierten Gase oder gasförmigen Produkte haben eine bisher nicht gekannte physiologische Wirksamkeit. Diese wird im speziellen auf die relativ hohe Konzentration von erzeugten Sauerstoffanionenradikalen zurückgeführt. Dabei werden keine bzw. nur geringe Mengen von Nebenprodukten, z.B. Ozon, erzeugt.The resulting defined ionized gases or gaseous products have a previously unknown physiological effectiveness. This is attributed in particular to the relatively high concentration of oxygen anion radicals generated. No or only small amounts of by-products, e.g. Ozone.

In der Figurenbeschreibung werden ausführlich einige bevorzugte Ausführungsformen beschrieben.Some preferred embodiments are described in detail in the description of the figures.

Es zeigen

Figur 1
eine Vorrichtung zum Erzeugen ionisierter Gase mit einer Innenelektrode;
Figur 2
eine Vorrichtung zum Erzeugen ionisierter Gase mit zwei Innenelektroden;
Figur 3
eine zweite Ausführungsform der Vorrichtung gemäß Figur 2;
Figur 4
eine Ausführungsform der Vorrichtung gemäß Figur 1;
Figur 4a
eine Draufsicht auf die Vorrichtung gemäß Figur 4;
Figur 5
eine weitere Ausführungsform der Vorrichtung gemäß Figur 1;
Figur 6
eine Vorrichtung zum Erzeugen ionisierter Gase mit einer zusammengesetzten Hohlelektrode und zwei Innenelektroden;
Figur 7
eine weitere mögliche Ausführungsform der Erfindung;
Figur 7a
eine Ansicht der Vorrichtung gemäß Figur 7 in Blickrichrichtung des Gasstromes.
Show it
Figure 1
a device for generating ionized gases with an inner electrode;
Figure 2
a device for generating ionized gases with two internal electrodes;
Figure 3
a second embodiment of the device according to Figure 2;
Figure 4
an embodiment of the device according to Figure 1;
Figure 4a
a plan view of the device of Figure 4;
Figure 5
a further embodiment of the device according to Figure 1;
Figure 6
a device for generating ionized gases with a composite hollow electrode and two internal electrodes;
Figure 7
another possible embodiment of the invention;
Figure 7a
a view of the device of Figure 7 in the direction of the gas stream.

Figur 1 zeigt eine erfindungsgemäße Vorrichtung zur Erzeugung definierter, ionisierter Gase bzw. von Ionisationsprodukten, bei der ein zu ionisierender Gasstrom 1 in eine röhrenförmige, zylindrische Hohlelektrode 3 eintritt. An der einstückig ausgebildeten Hohlelektrode 3 wird eine von einer Spannungsquelle 2 gelieferte Hochspannung angelegt. Diese Hochspannung regt die durchströmenden Gasmoleküle energetisch an, bevor sie den Bereich der Innenelektrode 4 erreichen. Durch die vorherige Anregung kann die Korona-Spannung auf 2,5 bis 4 kV gesenkt werden, wodurch die Bildung von Nebenprodukten, z.B. Ozon, Werte erreicht, die im wesentlichen nicht über den in der Natur vorkommenden Werten liegen.FIG. 1 shows a device according to the invention for generating defined, ionized gases or ionization products, in which a gas stream 1 to be ionized enters a tubular, cylindrical hollow electrode 3. A high voltage supplied by a voltage source 2 is applied to the one-piece hollow electrode 3. This high voltage energizes the gas molecules flowing through before they reach the area of the inner electrode 4. Due to the previous excitation, the corona voltage can be reduced to 2.5 to 4 kV, whereby the formation of by-products, e.g. Ozone, values that are essentially not higher than those found in nature.

Die eigentliche Koronaentladung erfolgt an der Innenelektrode 4. Die Außenelektrode 3 und die Innenelektrode 4 liegen auf dem gleichen bzw. die Innenelektrode auf einem niedrigeren, negativen elektrischen Potential. Mindestens ein Teilbereich der Innenelektrode 4 liegt dicht an der Gasaustrittsöffnung 9 der Außenelektrode 3.The actual corona discharge takes place at the inner electrode 4. The outer electrode 3 and the inner electrode 4 are on the same or the inner electrode is at a lower, negative electrical potential. At least a portion of the inner electrode 4 is close to the gas outlet opening 9 of the outer electrode 3.

Im Ausführungsbeispiel nach Figur 1 ist die Innenelektrode 4 einstückig ausgebildet und besteht aus einem drahtförmigen Bereich 5 und einem nadelförmigen Bereich 6, welcher dicht an der Gasaustrittsöffnung 9 liegt, um den Konzentrationsverlust ionisierter Gasmoleküle möglichst klein zu halten. Die Größe und Form der Innenelektrode 4 wird im Verhältnis zum Innenbereich der röhrenförmigen Außenelektrode 3 so ausgewählt, daß sie einen großen Anteil der durchströmenden Gasmoleküle ionisieren kann, so daß definierte Ionisationsprodukte entstehen. Die Konzentration sowie die qualitative Zusammensetzung kann zusätzlich über die Strömunqsgeschwindigkeit der Gasmoleküle gesteuert werden. Je niedriger die Strömungsgeschwindigkeit in dem angegebenen Bereich ist, desto höher ist die Konzentration der ionisierten Produkte, z.B. Sauerstoffanionenradikale Bei einer negativen Potentialdifferenz zwischen Außenelektrode 3 und Innenelektrode 4 wird die Innenelektrode 4 durch Stützen 7 aus isolierendem Material gehalten. Zum Schutz vor Stromschlägen ist die Außenelektrode mit einem isolierenden Berührungsschutz 8 ummantelt.In the exemplary embodiment according to FIG. 1, the inner electrode 4 is formed in one piece and consists of a wire-shaped area 5 and a needle-shaped area 6, which lies close to the gas outlet opening 9, in order to keep the concentration loss of ionized gas molecules as small as possible. The size and shape of the inner electrode 4 is selected in relation to the inner region of the tubular outer electrode 3 so that it can ionize a large proportion of the gas molecules flowing through, so that defined ionization products are formed. The concentration and the qualitative composition can also be controlled via the flow velocity of the gas molecules. The lower the flow rate in the specified range, the higher the concentration of the ionized products, e.g. Oxygen anion radicals If the potential difference between the outer electrode 3 and the inner electrode 4 is negative, the inner electrode 4 is held by supports 7 made of insulating material. To protect against electric shock, the outer electrode is covered with an insulating touch protection 8.

In den Figuren 2 und 3 wird eine Vorrichtung zur Erzeugung definierter, ionisierter Gase bzw. von Ionisationsprodukten beschrieben, die aus einer röhrenförmigen, zylindrischen Hohlelektrode 3 und aus je zwei Innenelektroden besteht. Eine Innenelektrode 10 ist jeweils im Gaseintrittsbereich angeordnet, die andere Innenelektrode 11, 12 ist im Gausaustrittsbereich angeordnet. Die Eingangsinnenelektrode 10 dient zur zusätzlichen Voranregung der Gasmoleküle. Dadurch kann die Erzeugung von definierten Ionisationsprodukten in einem breiten Strömungsgeschwindigkeitsbereich der Gase erreicht werden, wobei die Bildung von Nebenprodukten weiterhin die in der Natur auftretenden Werte nicht übersteigt. Durch den kegeligen Verlauf der Außenelektrode 3 in Figur 3 wird eine unterschiedliche Strömungsgeschwindigkeit an der inneren Eingangselektrode 10 und der Ausgangselektrode 12 erreicht. Die Verhältnisse der Eingangs- und Ausgangsoberflächen der Hohlelektrode 3 gemäß Figur 3 liegen in einem Bereich bis max. 10 : 1. Als besonders vorteilhaft hat sich ein Verhältnis von 2 : 1 und 3 : 1 erwiesen.FIGS. 2 and 3 describe a device for generating defined, ionized gases or ionization products, which consists of a tubular, cylindrical hollow electrode 3 and two internal electrodes each. One inner electrode 10 is arranged in each case in the gas inlet area, the other inner electrode 11, 12 is arranged in the gas outlet area. The input inner electrode 10 serves for additional pre-excitation of the gas molecules. As a result, the generation of defined ionization products can be achieved in a wide flow rate range of the gases, the formation of by-products still not exceeding the values occurring in nature. Due to the conical shape of the outer electrode 3 in FIG. 3, a different flow rate at the inner input electrode 10 and the output electrode 12 is achieved. The relationships of the input and output surfaces of the hollow electrode 3 according to FIG. 3 are in a range up to max. 10: 1. A ratio of 2: 1 and 3: 1 has proven to be particularly advantageous.

In den oben beschriebenen Ausführungsbeispielen sind die Innenelektroden 4 entweder als Metallspitze oder als Drahtgitter ausgebildet. Anstelle eines Drahtgitters kann natürlich auch jede dazu äquivalente Ausführungsform ausgewählt werden. Denkbar ist beispielsweise die Verwendung eines engmaschigen Metallnetzes oder einer perforierten Metallfolie als Innenelektrode.In the exemplary embodiments described above, the internal electrodes 4 are designed either as a metal tip or as a wire mesh. Instead of a wire mesh, of course, any equivalent embodiment can be selected. For example, it is conceivable to use a close-meshed metal mesh or a perforated metal foil as the inner electrode.

Aus den Figuren 4 und 4a wird eine weitere Ausführungsmöglichkeit der Innenelektrode als Drahtgitter ersichtlich. Hierbei wird das Drahtgitter dadurch gebildet, daß jeweils Einzeldrähte in mehreren parallelen Ebenen winkelverschoben angeordnet sind. Die Anzahl der verwendeten Drähte ist dabei variabel. In Figur 4 werden vier Drähte (13 a, b, c, d) verwendet. Figur 4a zeigt als Draufsicht die entstehende Form des Drahtgitters.A further embodiment of the inner electrode as a wire mesh can be seen from FIGS. 4 and 4a. In this case, the wire mesh is formed in that individual wires are angularly offset in several parallel planes. The number of wires used is variable. In Figure 4, four wires (13 a, b, c, d) are used. Figure 4a shows a top view of the resulting shape of the wire mesh.

Dabei liegt der Durchmesser des Drahtes, welcher das Drahtgitter bildet, vorzugsweise im Bereich zweichen 0,05 und 0,3 mm.The diameter of the wire that forms the wire mesh is preferably in the range between 0.05 and 0.3 mm.

Vorteilhafterweise sind die einzelnen Drähte, die jeweils ein Elektrodensystem bilden, senkrecht zum Gasstrom 1 angeordnet.The individual wires, which each form an electrode system, are advantageously arranged perpendicular to the gas stream 1.

Figur 5 beschreibt eine weitere Ausgestaltungsform der Innenelektrode 4.
Die Innenelektrode besteht aus einem Sockel 14 und einem zylindrischen Elektrodenkörper, der beispielsweise ein rundes oder spitzes Ende aufweisen kann. Der Sockel 14 ist an der Gaseintrittsseite mit der Außenelektrode 3 verbunden und weist Öffnungen 16 auf, durch die der Gasstrom in die Außenelektrode 3 eintritt. An der Oberfläche des Elektrodenkörpers 15 befinden sich elektrisch leitende Metallteilchen 17, die z.B. magnetisch an der Innenelektrode fixiert sein können. Durch eine große Anzahl der Metallteilchen kann die Hochspannung bei gleichbleibender Konzentration der Ionisationsprodukte weiter gesenkt werden.FIG. 5 describes a further embodiment of the inner electrode 4.
The inner electrode consists of a base 14 and a cylindrical electrode body, which can have, for example, a round or pointed end. The base 14 is connected to the outer electrode 3 on the gas inlet side and has openings 16 through which the gas flow into the outer electrode 3 entry. There are electrically conductive metal particles 17 on the surface of the electrode body 15, which can be magnetically fixed to the inner electrode, for example. With a large number of metal particles, the high voltage can be further reduced while the concentration of the ionization products remains the same.

Figur 6 bezeichnet eine Vorrichtung zur Ionisierung von Gasen, bei der die Außenelektrode 3 nicht einstückig ausgebildet ist, sondern in mehrere Elektrodenbereich unterteilt ist. In dem Ausführungsbeispiel wird eine Außenelektrode mit drei Elektrodenbereichen 17, 18, 19 verwendet. Das zu ionisierende Gas 1 tritt am Eingangsbereich in den Außenelektrodenbereich 18 ein. Dieser ist mit einer Spannungsquelle U₁ verbunden. Die so vorangeregten Gasmoleküle passieren eine erste gitterförmige bzw. perforierte Innenelektrode 21 und gelangen in einen zweiten Wahlelektrodenbereich 19. An diesen wird eine von U₁ verschiedene Spannung U₂ angelegt. Vor Verlassen der Außenelektrode 3 durchströmt das Gasgemisch eine dritten Außenelektrodenbereich 20. In diesem Bereich ist eine ausgangsseitig gelagerte zweite Innenelektrode 22 angeordnet. Der Bereich 20 wird mit einer Spannung U₃ versorgt. Alle Außenelektrodenbereich 18, 19, 20 sind durch Isolationskörper 23 voneinander getrennt. Als Isolationsmaterial wird beispielsweise Teflon (Warenzeichen) verwendet. Bei dieser Variante kann die Voranregung des Gases noch weiter verbessert werden, beispielsweise durch ein höheres negatives Potential mit U₁ > U₂ > U₃ oder U₂ > U₃.FIG. 6 designates a device for ionizing gases, in which the outer electrode 3 is not formed in one piece, but is divided into several electrode areas. In the exemplary embodiment, an outer electrode with three electrode regions 17, 18, 19 is used. The gas 1 to be ionized enters the outer electrode area 18 at the entrance area. This is connected to a voltage source U₁. The gas molecules excited in this way pass through a first grid-shaped or perforated inner electrode 21 and arrive in a second selection electrode area 19. A voltage U 2 different from U 1 is applied to this area. Before leaving the outer electrode 3, the gas mixture flows through a third outer electrode region 20. A second inner electrode 22 mounted on the output side is arranged in this region. The area 20 is supplied with a voltage U₃. All outer electrode regions 18, 19, 20 are separated from one another by insulation bodies 23. For example, Teflon (trademark) is used as insulation material. In this variant, the pre-excitation of the gas can be improved even further, for example by a higher negative potential with U₁> U₂> U₃ or U₂> U₃.

Als Elektrodenmaterial wird in allen Ausführungsbeispielen bevorzugt Metall, insbesondere Platin, Gold oder Kupfer verwendet. Um die sehr geringe Menge an gebildetem Ozon weiter zu verringern, können auch kobaltsalzbeschichtete bzw. kobaltlegierte Elektroden, d.h. Nadeln, Gitter, Späne und innere Oberflächen, eingesetzt werden. Kobaltsalze zersetzen Ozon zu Sauerstoff.In all exemplary embodiments, metal, in particular platinum, gold or copper, is preferably used as the electrode material. In order to further reduce the very small amount of ozone formed, cobalt-salt-coated or cobalt-alloyed electrodes, ie needles, grids, chips and inner surfaces, can also be used. Cobalt salts decompose ozone to oxygen.

Die Vorrichtungen der oben beschriebenen Art dienen vorzugsweise zu Inhalationszwecken. Dazu wird als Gas vorzugsweise Sauerstoff verwendet. Zur Erzeugung einer ausreichenden Menge an Sauerstoffanionenradikalen ist beispielsweise ein Sauerstoff- bzw. Luftvolumenstrom von weniger als 5ml/min, vorzugsweise von 1-3 ml/min ausreichend, wenn eine Hohlelektrode mit einer Querschnittsoberfläche von 1 mm² verwendet wird.The devices of the type described above are preferably used for inhalation purposes. For this purpose, oxygen is preferably used as the gas. To generate a sufficient amount of oxygen anion radicals, for example, an oxygen or air volume flow of less than 5 ml / min, preferably of 1-3 ml / min is sufficient if a hollow electrode with a cross-sectional surface of 1 mm² is used.

Die erfindungsgemäße Vorrichtung zur Ionisierung von Gasen kann auch zur Sterilisation verwendet werden.The device for ionizing gases according to the invention can also be used for sterilization.

Anhand der Figuren 7 und 7a wird eine solche Vorrichtung beschrieben.Such a device is described with reference to FIGS. 7 and 7a.

Ein Gasstrom tritt im Eintrittsbereich 24 einer rohrförmigen, zylindrischen Außenelektrode 3 in diese ein. An der dem Eintrittsbereich gegenüberliegenden Seite ist die Außenelektrode 3 durch eine Wand 25 abgeschlossen. Die Außenelektrode 3 ist mit einer Spannungsquelle 3 verbunden, die eine Hochspannung von 5 bis 12 kV liefert. Eine faserförmige Innenelektrode 26 ist mit ihrem einen Ende an einer Stütze 7 und an ihrem anderen Ende an der Wand 25 befestigt. Als Material der Innenelektrode 26 wird vorzugsweise Kohlenstoff gewählt, damit bei der verwendeten Hochspannung nur geringe Ozonbildung und Metallemissionen entstehen können. Im Bereich der Innenelektrode 26 sind im Längsbereich der Hohlelektrode 3 mehrere Löcher 27 angeordnet. Das eintretende Gas wird an der Innenelektrode 26 ionisiert. Das fertige Ionisationsprodukt tritt durch die Löcher 27 aus. Dabei beträgt das Verhältnis des Durchmessers der Elektrode und eines jeden Loches vorzugsweise zwischen 1 : 1,5 und 1 : 4. Anstelle einer Lochreihe kann auch ein Austrittsschlitz oder eine dazu äquivalente Austrittsöffnung vorgesehen werden.A gas flow enters the tubular cylindrical outer electrode 3 in the entry area 24. On the side opposite the entry area, the outer electrode 3 is closed off by a wall 25. The outer electrode 3 is connected to a voltage source 3, which supplies a high voltage of 5 to 12 kV. A fibrous inner electrode 26 is attached at one end to a support 7 and at the other end to the wall 25. Carbon is preferably selected as the material of the inner electrode 26, so that only low ozone formation and metal emissions can arise at the high voltage used. In the area of the inner electrode 26, a plurality of holes 27 are arranged in the longitudinal area of the hollow electrode 3. The incoming gas is ionized on the inner electrode 26. The finished ionization product exits through holes 27. The ratio of the diameter of the electrode to each hole is preferably between 1: 1.5 and 1: 4. Instead of a row of holes, an outlet slot or an outlet opening equivalent thereto can also be provided.

Die Vorrichtung wird beispielsweise zur Sterilisation von Nahrungsmitteln und ggf. von Verpackungsbehältern angewendet.The device is used, for example, for the sterilization of food and possibly packaging containers.

Ein weiteres bevorzugtes Anwendungsgebiet ist die Sterilisation sowie die Sterilhaltung von medizinischen und zahnmedizinischen Instrumenten, von medizinischen Arbeitsplätzen sowie Hohlkörpern, die z.B. in der Medizin benutzt werden.Another preferred area of application is the sterilization and sterile maintenance of medical and dental instruments, medical workplaces and hollow bodies, which e.g. be used in medicine.

Somit können auch z.B. Operationstische vor Ort sterilisiert werden.Thus, e.g. Operating tables can be sterilized on site.

Die Vorrichtung ist ebenfalls zur Sterilisation des Gasmilieus bei der Produktion von Kosmetika anwendbar.The device can also be used to sterilize the gas environment in the production of cosmetics.

Grundsätzlich ist die Vorrichtung zur Sterilisation von organischem Material, das durch Einwirkung von Mikroorganismen in seinen Gebrauchswerteigenschaften beeinträchtigt wird, anwendbar.Basically, the device for the sterilization of organic material, which is impaired by the action of microorganisms in its useful properties.

Wegen des anwendungstechnischen Gefahrenpotentials scheint die Verwendung von reinem Sauerstoff zur Sterilisation ungeeigneter als Stickstoff. In diesem Fall ist z.B. die Verwendung von Luft die ökonomischste Lösung (z.B. beim Sterilisieren in Kühlschränken).Because of the potential application risk, the use of pure oxygen for sterilization seems less suitable than nitrogen. In this case e.g. the use of air is the most economical solution (e.g. when sterilizing in refrigerators).

Weiterhin ist es möglich, im Bereich der Gasaustrittsöffnung 9 bzw. den Austrittslöchern 27 der Außenelektrode 3 eine Sprühvorrichtung (nicht dargestellt) vorzusehen. Eine solche Vorrichtung findet bevorzugt Anwendung in Sterilisationsschränken. Durch die zusätzliche Anwendung z.B. einer Wasserstoffperoxidlösung, die dem Gasstrom, welcher das Ionisationsprodukt enthält, mit Hilfe der Sprühvorrichtung beigemischt wird und deren Konzentration vorzugsweise kleiner als 3 % ist, kann die Sterilisationswirkung noch erhöht werden.Furthermore, it is possible to provide a spray device (not shown) in the area of the gas outlet opening 9 or the outlet holes 27 of the outer electrode 3. Such a device is preferably used in sterilization cabinets. Through the additional application e.g. a hydrogen peroxide solution, which is mixed with the gas stream containing the ionization product with the aid of the spray device and whose concentration is preferably less than 3%, the sterilization effect can be increased.

Claims (12)

  1. Appliance for producing defined ionized gases or ionization products,
    characterized by the following features:
    a) a tubular hollow electrode, which can be connected to a feeder for the gas, as the outer electrode (3);
    b) at least one inner electrode (6, 10, 13a-d, 21) which within the range of its disposition, affects the entire cavity of the outer electrode (3);
    c) there is applied to the inner and the outer electrode a negative high voltage, supplied by a high voltage source, of from -2000 to -3000 volts, in each case with respect to earth, a potential difference of at most 1000 volts being set between the inner and outer electrode, and
    d) a flow velocity is set for the gases of less than 100 ml/min/mm².
  2. Appliance according to Claim 1,
    characterized in that
    two inner electrodes (10, 11, 12) arranged behind one another in the flow direction of the gases are provided.
  3. Appliance for producing ionized gases or gas mixtures,
    characterized by the following features:
    a) a tubular hollow electrode, which can be connected to the feeder for the gas, as the outer electrode (3), which at its lateral side has orifices (27) and is closed on the side facing the feeder;
    b) fibrous inner electrode (26) which is arranged in the region of the orifice and in the longitudinal direction of the outer electrode in such a way, that the gases, prior to their exit from the orifices (27), flow past the inner electrode;
    c) there is applied to the inner and the outer electrode a negative high voltage, supplied by a high voltage source, of from -2000 to -3000 volts, in each case with respect to earth, a potential difference of at most 1000 volts being set between the inner and outer electrode, and
    d) a flow velocity is set for the gases of less than 100 ml/min/mm².
  4. Appliance according to Claim 1, 2 or 3,
    characterized in that
    the tubular outer electrode (3) is of one-piece design.
  5. Appliance according to Claim 1, 2 or 3,
    characterized in that
    the tubular outer electrode (3) is composed of a plurality of subregions (18, 19, 20).
  6. Appliance according to Claim 5,
    characterized in that
    there is applied to each subregion (18, 19, 20) a voltage (U₁, U₂, U₃).
  7. Appliance according to any one of Claims 1, 2 and 4-6,
    characterized in that
    the inner electrode is designed as a metal tip (6, 12).
  8. Appliance according to any one of Claims 1, 2 and 4-6,
    characterized in that
    the inner electrode is designed as a wire grating (10, 11, 13a-d, 21, 22).
  9. Appliance according to any one of Claims 1 to 6,
    characterized in that
    the surface of the inner electrode (15) is provided with metal particles (17) which are fixed thereon in a conductive manner.
  10. Appliance according to any one of Claims 1 to 9,
    characterized in that
    the tubular outer electrode (3) and the inner electrodes (4, 10, 11, 12, 13a-d, 15, 21, 22) consist of material which is coated with one or more cobalt salts or is alloyed with cobalt.
  11. Appliance according to any one of Claims 1 to 10,
    characterized in that
    there is provided, in the effective range of the ionization products, which is situated in the outlet region of the outer electrode (3), a spray device by means of which the ionized gas can be admixed with a liquid.
  12. Appliance according to Claim 3,
    characterized in that
    the inner electrode consists of carbon fibres.
EP92908303A 1991-04-12 1992-04-09 Device for the production of defined ionised gases or ionisation products Expired - Lifetime EP0579680B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4112459 1991-04-12
DE4112459A DE4112459A1 (en) 1991-04-12 1991-04-12 METHOD AND DEVICE FOR PRODUCING DEFINED IONIZED GASES OR. GAS MIXTURES
PCT/DE1992/000293 WO1992019030A1 (en) 1991-04-12 1992-04-09 Device for the production of defined ionised gases or ionisation products

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EP0579680A1 EP0579680A1 (en) 1994-01-26
EP0579680B1 true EP0579680B1 (en) 1995-04-12

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JP (1) JPH06506791A (en)
AT (1) ATE121229T1 (en)
AU (1) AU1586292A (en)
DE (2) DE4112459A1 (en)
IL (1) IL101565A (en)
WO (1) WO1992019030A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0164877B1 (en) * 1994-03-12 1999-03-20 구자홍 Anion discharge device of image display apparatus
JP3635111B2 (en) * 1994-11-01 2005-04-06 藤森工業株式会社 Sterilization method
DE19512228C2 (en) * 1995-03-24 1997-03-20 Goldstein & Lewin Tech Gmbh Method and device for generating gaseous oxygen anion radicals under atmospheric pressure conditions with an ionization electrode consisting of carbon fibers
DE19514522C1 (en) * 1995-04-12 1996-06-13 Goldstein & Lewin Tech Gmbh Therapeutic agents containing oxygen anion radicals and their use for the treatment of pain
DE29512163U1 (en) * 1995-07-28 1995-10-19 VHG Versandhandelsgesellschaft mbH, 56581 Ehlscheid Device for ionizing gases
DE19640528A1 (en) * 1996-10-01 1998-04-02 Roland Dr Gesche Method and apparatus for treatment of components by vacuum technology processes
DE19708643C2 (en) * 1997-02-20 1999-04-15 Goldstein & Lewin Tech Gmbh Use of oxygen anion radicals and / or their follow-up and breakdown products for the treatment of Parkinson's disease

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US2018434A (en) * 1934-03-15 1935-10-22 Solar Ind Inc Apparatus for generating ions
US3234432A (en) * 1961-12-28 1966-02-08 Rca Corp Air ionizer
FR2296958A1 (en) * 1975-01-06 1976-07-30 Cellophane Sa Ionisation electrodes for corona web discharging unit - comprising conductor tracks provided along insulating band
FR2320648A1 (en) * 1975-08-05 1977-03-04 Frebault Jacques Negatively charged atmospheric ions produced by air freshener - using high voltage electrostatic charge to vapourise water as ionised mist
DE2535621C2 (en) * 1975-08-09 1981-10-15 Oskar Dr.med. 6200 Wiesbaden Hieber Device for ionizing room air and other gases, especially oxygen
US4318028A (en) * 1979-07-20 1982-03-02 Phrasor Scientific, Inc. Ion generator
EP0029421B1 (en) * 1979-11-20 1986-08-20 Fleck, Carl Maria, Prof. Dr. Device for generating a directed current of a gaeous medium
EP0048102A1 (en) * 1980-09-11 1982-03-24 PENNY & GILES POTENTIOMETERS LIMITED Air ionization devices
DE3401378A1 (en) * 1983-09-05 1985-03-21 Bruno 5168 Nideggen Wertz Ionisation device
DE3501356A1 (en) * 1984-02-13 1985-08-14 Biomed-Electronic GmbH & Co Medizinischer Gerätebau KG, 2150 Buxtehude Ionisation chamber for the ionisation of gaseous oxygen
DE3414268A1 (en) * 1984-04-14 1985-10-24 Kolbus Gmbh & Co Kg Method and device for the sterilisation of foodstuff containers
DE3672336D1 (en) * 1985-12-20 1990-08-02 Astra Vent Ab CONVEYING AIR.

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DE59201922D1 (en) 1995-05-18
EP0579680A1 (en) 1994-01-26
JPH06506791A (en) 1994-07-28
DE4112459A1 (en) 1992-10-15
WO1992019030A1 (en) 1992-10-29
AU1586292A (en) 1992-11-17
IL101565A (en) 1995-03-30
ATE121229T1 (en) 1995-04-15
IL101565A0 (en) 1992-12-30

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