WO2000016018A1 - Procede et dispositif pour transporter des gaz, notamment de l'air - Google Patents

Procede et dispositif pour transporter des gaz, notamment de l'air Download PDF

Info

Publication number
WO2000016018A1
WO2000016018A1 PCT/EP1999/006792 EP9906792W WO0016018A1 WO 2000016018 A1 WO2000016018 A1 WO 2000016018A1 EP 9906792 W EP9906792 W EP 9906792W WO 0016018 A1 WO0016018 A1 WO 0016018A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
sorption zone
electrode
transport channel
air
Prior art date
Application number
PCT/EP1999/006792
Other languages
German (de)
English (en)
Inventor
Hanns Rump
Original Assignee
Brand-Gerhart, Rosemarie
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 Brand-Gerhart, Rosemarie filed Critical Brand-Gerhart, Rosemarie
Priority to AU60828/99A priority Critical patent/AU6082899A/en
Priority to DE19981840T priority patent/DE19981840D2/de
Publication of WO2000016018A1 publication Critical patent/WO2000016018A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the invention relates to a method for transporting gases, in particular air, according to the preamble of claim 1 and a device according to the preamble of claim 5.
  • air blowers are required in the field of building technology, in technical devices such as computers, or in room air filters or air conditioning devices.
  • propellers i.e. axial blowers, or rollers provided with appropriately arranged fins, i.e. radial blowers, which are driven by motors.
  • the noise emitted by fans is perceived as annoying.
  • the fan is necessary as protection against overheating.
  • the blower is even indispensable for the production of the basic function of the device. For these reasons, the reduction in comfort due to the acoustic annoyance must be accepted.
  • the invention is therefore based on the object of providing a method and a device for transporting gases, in particular air, the disadvantages mentioned being avoided and the gas being transported largely silently; Likewise, a cleaning of the gases, in particular air, the disadvantages mentioned being avoided and the gas being transported largely silently; Likewise, a cleaning of the gases, in particular air, the disadvantages mentioned being avoided and the gas being transported largely silently; Likewise, a cleaning of the gases, in particular air, the disadvantages mentioned being avoided and the gas being transported largely silently; Likewise, a cleaning of the gases, in particular air, the disadvantages mentioned being avoided and the gas being transported largely silently; Likewise, a cleaning of the gases, in particular air, the disadvantages mentioned being avoided and the gas being transported largely silently; Likewise, a cleaning of the gases, in particular air, the disadvantages mentioned being avoided and the gas being transported largely silently; Likewise, a cleaning of the gases, in particular air, the disadvantages mentioned being avoided and the gas being transported largely silently;
  • CONFIRMATION KDPIE transported gas or air and thus a quality improvement of the gas may be possible.
  • the object is achieved by a method for transporting gases, in particular air, in which the gas to be transported is at least partially ionized and accelerated in an electrical field while dispensing with mechanically movable elements for gas transport. After accelerating in the electric field, the gas passes through a gas-permeable sorption zone to eliminate certain substances from the gas flow in order to improve the quality of the gas.
  • the object is achieved by a device for transporting gases, in particular air, consisting of a transport channel with an inlet opening and an outlet opening, wherein at least one pair of electrodes, between which an electrical voltage can be applied, and an ionization device are arranged in the transport channel coincides with an electrode of the pair of electrodes or is identical or separate.
  • a device for transporting gases in particular air, consisting of a transport channel with an inlet opening and an outlet opening, wherein at least one pair of electrodes, between which an electrical voltage can be applied, and an ionization device are arranged in the transport channel coincides with an electrode of the pair of electrodes or is identical or separate.
  • the gas After acceleration in the electric field, the gas passes through a gas-permeable sorption zone for the elimination of certain substances from the gas stream and thus in particular for improving the quality of the gas, the sorption zone being set up in front of the outlet opening of the transport channel and the sorption zone being a small one which does not hinder the gas stream Has flow resistance.
  • the invention is based on the principle of the acceleration of charged particles in an electric field. In this way, a current of matter is generated between two electrodes operated with DC voltage, between which there is an electric field.
  • the negative electrode can be designed as a so-called spray electrode, which itself generates air ions due to the coronary effect, peak discharge. Due to the inertia, the movement of the charged particles is not stopped at the rear electrode if it is partially permeable to gas, for example has cutouts. The gas ions occur therefore at the outlet opening as a gas stream. The charged particles can entrain uncharged gas atoms or molecules, thereby increasing the gas flow. Due to the negative pressure formed in the transport channel, new gas particles are sucked in through the inlet opening and transported to the front electrode. Since the gas transport is not effected mechanically, it proceeds largely silently without the gas producing any noticeable flow noises.
  • the flow rate that can be achieved depends on the electric field strength and the degree of ionization.
  • the invention can be used particularly advantageously when the flow velocities are not to be very high. There are many technical uses.
  • a typical gas flow rate of up to 4 m / sec can be 10 V / m to achieve 'at electric field strengths of 2.5.
  • gas particles are necessary to implement the invention. These are ionized either by the first electrode (cathode) and / or by an upstream ionization stage. Air is ionized by coronary discharge or by dielectric barrier discharge.
  • the gas stream is preferably passed through a sorption zone.
  • the sorption zone comprises a layer of adsorbent material, on which substances accumulate and are thus removed from the gas stream, to which the ionized gas has reacted in an undesirable manner.
  • activated carbon filters can eliminate ozone. In this way, the quality of the gas can be improved with regard to exposure to odorants or dust or other floating particles or particles.
  • a particle filter can be installed upstream of the overall arrangement in order to contaminate the components due to electrostatic attraction prevent. Furthermore, the particle filter also serves to clean the transported gas.
  • the electric field is homogeneous and constant over time.
  • the positive electrode is designed as a surface which is predominantly perforated with any geometry, for example a circular or square grid surface or an annular grid surface or an arrangement of a plurality of grid surfaces or rings arranged in series, which are preferably arranged perpendicular to the direction of the transport channel is.
  • the surface of the positive electrode can preferably be designed in accordance with the cross section of the transport channel.
  • the positive electrode can be designed as a grid or as a ring.
  • the negative electrode is preferably designed as a spray electrode.
  • Electrodes There are several pairs of electrodes, which are arranged one behind the other in the transport channel and whose electrical fields are rectified. These electrical fields are preferably shielded from one another. The electrode pairs can also be connected in parallel.
  • a sorption zone for eliminating certain substances from the gas flow is set up in front of the outlet opening, which preferably has a low flow resistance that does not impede the gas flow. This can be achieved, for example, by increasing the cross-section of the gas flow channel through which flow flows, in accordance with the flow laws. As a result, the quality of the gas can be improved with regard to the exposure to odorous substances or to dust or other floating particles or particles.
  • the sorption zone can consist of activated carbon.
  • the sorption zone can consist of a metal mesh.
  • the sorption zone can likewise consist of materials coated with transition metals. An advantageous feature of the sorption materials used is the largest possible available "inner" surface, given a limited volume, in which gases and gas constituents can be adsorbed (gas kidney).
  • Activated carbon typically has a specific weight per unit area of approx. 100 m 2 / g.
  • An ionization stage is arranged in front of the first pair of electrodes of the device, which is permeable to the gas to be transported and ionizes it, preferably by means of a dielectric barrier electrical discharge. At least one of the electrodes is surrounded or coated with a dielectric material, thereby preventing electrical discharges with a normal electric field strength. With a correspondingly higher electric field strength, however, an electrical discharge can be realized. A disabled discharge therefore requires higher field strengths than the normally applied electrical field strength for the actual discharge.
  • a particle filter can also be arranged in the area of the inlet opening into the device.
  • FIG. 1 shows a device according to the invention with a pair of electrodes
  • Figure 1 shows the basic structure of a device for gas transport.
  • the underlying principle is to accelerate and transport air ions in an electrostatic field.
  • a transport channel 1 which is designed, for example, as a tube with a rectangular or round cross section and of which only two side walls are shown here, two electrodes 3, 4 are arranged.
  • the electrodes are connected to an electrical direct voltage source 5 via a connecting line. When a voltage is applied, an essentially homogeneous electric field is generated between the electrodes 3, 4.
  • the left electrode 3 is also used for ionization. For this reason, it has several tips 2, which can be needles or thin electrical wires or carbon fiber bundles. Voltage peaks occur at the respective tips 2, so that the so-called corona effect occurs at these points and electrical charge, that is, electrons, are transferred from these tips to air molecules.
  • the air ions are thus negatively charged.
  • the ions are accelerated towards the positive electrode.
  • the accelerated ions are indicated as horizontal arrows.
  • the positive electrode 4 is designed as a grid or as a ring. It is arranged approximately perpendicular to the transport direction defined by the transport channel and in the present case extends over the entire cross-sectional area.
  • the ions accelerated in the direction of the electrode are only partially “captured” by this electrode. However, the major part flies through the grid-shaped electrode 4 and thus leaves the electric field, which is only between the two electrodes 3, 4 of the electrode pair located.
  • the accelerated ions also carry uncharged gas molecules with them as they move. Therefore, gas is transported from the negative pole towards the positive pole of the electric field. As a result, air is also sucked in through the inlet opening 7 of the transport channel 1 and exits again through the outlet opening 8.
  • Ozone is an unpleasant smelling gas that is harmful to health in concentrations greater than 0.1 ppm.
  • a sorption zone 6 is arranged in the region of the outlet opening. This is able to bind the interfering substances and, if necessary, catalytically decompose them.
  • a thin layer of activated carbon is used as the sorbator 6, which has only a low flow resistance, so that the gas stream is not blocked up in front of the sorption zone.
  • the ozone molecules adsorb on the activated carbon layer and thereby decay. Since, in addition to the air molecules, oxidizable air constituents, odorous substances, bacteria or germs are ionized by the ionization device and transported in the electric field and then also adsorbed on the activated carbon, both oxidizable air constituents and ozone are concentrated on the surface of the activated carbon. This leads to reactive concentrations of both gas groups, so that the oxidizable air components can react with the ozone and thus be oxidatively destroyed.
  • the air passes the sorpator 6 somewhat unhindered, while ozone and oxidizable air constituents are almost completely retained.
  • activated carbon other materials can also be used in the sorption layer. Sintered metal barriers or barriers made of metal wool are particularly suitable.
  • the activated carbon is advantageously equipped by chemical treatments so that the desired goal is further supported. Coating the coal with metal oxides in particular accelerates the decomposition of the ozone molecules.
  • Fig. 2 shows in principle such an arrangement.
  • a plurality of electrodes 3, 3 ', 3 ", so-called spray electrodes, which consist of needles, very thin wires or carbon fiber bundles, are arranged in a transport channel 1.
  • the associated anodes 4, 4', 4" consist of grids.
  • the ions passing through the grid reach the electrical field 12 of the next spray electrode.
  • the electric field 12 acting between a pair of electrodes is indicated by a dashed frame.
  • An electrical direct voltage is applied to the electrodes by means of a voltage source 5.
  • the electrodes are arranged in such a way that no electric field can build up in relation to the grid electrode lying backwards in the direction of flow. This can be done using suitable electrical shielding.
  • any number of stages can be cascaded with the aim of generating a pressure in front of the sorption zone 6 which drives a sufficient air flow through the sorption zone to the outlet opening 8.
  • the arrangement described above is preceded by an ionization stage 9.
  • an arrangement which operates on the principle of the so-called Siemens tube and is connected to a high AC voltage 10 is preferably used.
  • electrons are transferred to the ambient air and so ions are generated in large quantities. If these ions get into the electric field of the electrodes 3, 3 ', 3 ", they are immediately accelerated in the direction of the corresponding grid electrode 4, 4', 4". In this case, the ion production is not left solely to the increase in field strength at the tips of the spray electrodes 3, 3 ', 3 ".
  • the mass flow of ionized molecules and the associated air flow are increased by this measure.
  • Cascaded, series-connected electrode pairs are used in particular in the practical arrangements in order to be able to transport a large amount of air.
  • a particle filter 11 in the area of the inlet opening 7 of the transport channel 1. This is for example a HePa filter or consists of fiberglass or paper.
  • the device shown in FIG. 2 can advantageously be used as an air cleaning device.
  • "below room air-conditioning device is advantageously the air and transported absolutely ge Hurchlos by ion pumps.
  • the air is cleaned of odorous substances and of bacteria and particles by mechanical pre-cleaning using a mechanical filter 11.
  • the air can also be cleaned by oxidizing the odorous substances once in the air with the help of active oxygen ions and in particular by reacting those concentrated in the sorption zone Odorants with the active oxygen ions occur.
  • This device can be made relatively flat, and the active area of the device can be very large, with a large number of individual ion pumps being present. This means that a volume flow of up to 5,000 m 3 / h can be achieved, which is only possible in technically known concepts with mechanically moving parts if considerable running and flow noises are accepted.
  • the outflowing air is both free of particles, free of germs and free of odors.
  • Devices of this type can be used both in the private sector and in the area of hospitals, medical practices, offices, production facilities etc.
  • an ion pump with a sorption zone and an ionization zone is used to control odors and bacteria. This can be advantageous in food production and distribution, right up to use in domestic refrigerators.
  • Ion pump can be used. It is also particularly advantageous here that the air exchange takes place without noise and that the air quality can also be improved.
  • the invention is particularly advantageous for commercial use in the noiseless ventilation of electronic devices and for the treatment of room air in hospitals, medical practices, offices, production facilities etc. as well as in technical devices.
  • the utility of the invention consists in particular in that the gas is accelerated and transported practically noiselessly due to the at least partial ionization and acceleration in an electric field, in the form of an ion pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Electrostatic Separation (AREA)

Abstract

L'invention concerne un procédé permettant de transporter des gaz, tels que de l'air, selon lequel le gaz à acheminer est ionisé au moins en partie et accéléré dans un champ électrique, sans faire pour autant appel à l'utilisation d'éléments mobiles pour transporter le gaz. L'invention concerne en outre un dispositif permettant de transporter des gaz, notamment de l'air, comportant une ouverture d'entrée (7) et une ouverture de sortie (8), ainsi qu'un canal de transport (19) formé entre. Dans le canal de transport (1), il est prévu au moins une paire d'électrodes (3, 4; 3', 4'; 3'', 4'') entre lesquelles peut être appliquée une tension électrique, ainsi qu'un dispositif d'ionisation (3, 3', 3'', 9) qui correspond à une électrode de la paire d'électrodes (3, 4; 3', 4'; 3'', 4'') ou est conçue de manière séparée. Le transport du gaz s'effectuant en raison du mouvement de particules chargées électriquement dans un champ électrique et ne dépendant par conséquent pas du mouvement d'éléments mécaniques est de ce fait silencieux.
PCT/EP1999/006792 1998-09-15 1999-09-15 Procede et dispositif pour transporter des gaz, notamment de l'air WO2000016018A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU60828/99A AU6082899A (en) 1998-09-15 1999-09-15 Method and device for transporting gases, especially air
DE19981840T DE19981840D2 (de) 1998-09-15 1999-09-15 Verfahren und Vorrichtung zum Transport von Gasen, insbesondere von Luft

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19842068A DE19842068A1 (de) 1998-09-15 1998-09-15 Lufttechnische Anlage zum Transport von Luft in elektrostatischen Feldern
DE19842068.4 1998-09-15

Publications (1)

Publication Number Publication Date
WO2000016018A1 true WO2000016018A1 (fr) 2000-03-23

Family

ID=7880935

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/006792 WO2000016018A1 (fr) 1998-09-15 1999-09-15 Procede et dispositif pour transporter des gaz, notamment de l'air

Country Status (3)

Country Link
AU (1) AU6082899A (fr)
DE (2) DE19842068A1 (fr)
WO (1) WO2000016018A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2919508A3 (fr) * 2007-08-03 2009-02-06 Renault Sas Dispositif et procede de filtration de microparticules contenues dans un circuit de climatisation
DE102012222059B4 (de) * 2012-12-03 2017-02-16 Ust Umweltsensortechnik Gmbh Vorrichtung zur Luftbehandlung mit Ionen

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE311574T1 (de) * 2000-09-20 2005-12-15 Pz Fund Invest N V Vorrichtung zur regeneration von raumluft
DE10261921A1 (de) * 2002-07-25 2004-02-12 T.E.M. Gmbh Zwangsbelüftete Messeinrichtung zur Erfassung lufttechnischer Parameter
ES2319478B1 (es) * 2006-05-12 2010-01-25 Bsh Electrodomesticos España, S.A. Aparato para la limpieza y la climatizacion de aire.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4396580A (en) * 1981-03-18 1983-08-02 Avco Everett Research Laboratory, Inc. Fluid-dynamic means for efficaceous use of ionizing beams in treating process flows
US4547129A (en) * 1983-05-13 1985-10-15 Keiko Endo Air stream generating apparatus
EP0403230A1 (fr) * 1989-06-15 1990-12-19 Honeywell Control Systems Ltd. Epurateur de fluide

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2538958C3 (de) * 1975-09-02 1981-05-07 Nieweg Kg, 4800 Bielefeld Entkeimungsvorrichtung
DE2854716A1 (de) * 1978-12-18 1980-06-19 Philips Patentverwaltung Vorrichtung zum elektrostatischen bewegen und behandeln von luft
DE3173286D1 (en) * 1980-05-06 1986-02-06 Fleck Carl M Electrostatic air filter
DE3148380C2 (de) * 1981-12-07 1986-09-04 Philips Patentverwaltung Gmbh, 2000 Hamburg Ionengenerator zur Erzeugung einer Luftströmung
DE19651402A1 (de) * 1996-12-11 1998-06-18 T E M Tech Entwicklung Und Man Apparat zur physikalischen Aufbereitung von Luft, insbesondere von Atemluft

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4396580A (en) * 1981-03-18 1983-08-02 Avco Everett Research Laboratory, Inc. Fluid-dynamic means for efficaceous use of ionizing beams in treating process flows
US4547129A (en) * 1983-05-13 1985-10-15 Keiko Endo Air stream generating apparatus
EP0403230A1 (fr) * 1989-06-15 1990-12-19 Honeywell Control Systems Ltd. Epurateur de fluide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2919508A3 (fr) * 2007-08-03 2009-02-06 Renault Sas Dispositif et procede de filtration de microparticules contenues dans un circuit de climatisation
DE102012222059B4 (de) * 2012-12-03 2017-02-16 Ust Umweltsensortechnik Gmbh Vorrichtung zur Luftbehandlung mit Ionen

Also Published As

Publication number Publication date
AU6082899A (en) 2000-04-03
DE19981840D2 (de) 2001-08-09
DE19842068A1 (de) 2000-03-16

Similar Documents

Publication Publication Date Title
EP0944941B1 (fr) Dispositif de production d'ions d'oxygene actifs dans l'air pour la purification de l'air, au moyen d'un ionisateur d'air
EP2025351B1 (fr) Dispositif de purification d'air doté d'un neutraliseur d'O3 et procédé de purification d'air
EP1807214B1 (fr) Procede pour extraire par filtration des odeurs d'un flux d'air et dispositif de filtration muni d'un filtre anti-odeurs
DE3502148C2 (fr)
US3744217A (en) High-voltage ozone-free electrostatic air filter
DE202006020800U1 (de) Luftdesinfektionsvorrichtung
DE69922665T2 (de) Luftreinigungsgerät
EP0989901A1 (fr) Filtre d'ionisation pour epuration d'air
DE19919623A1 (de) Luftaufbereitungssystem zum wirksamen Abbau von luftgetragenen Gerüchen, Keimen und Schadstoffen
DE19651403A1 (de) Mehrstufiges Luftgütesystem für Fahrzeugkabinen
DE10013841B4 (de) Anordnung zur Aufbereitung von Luft in lufttechnischen Anlagen
DE202004012352U1 (de) Mehrstufig arbeitendes Gerät zur Luftaufbereitung
WO2000016018A1 (fr) Procede et dispositif pour transporter des gaz, notamment de l'air
DE19513943A1 (de) Verfahren und Vorrichtung zur Verbesserung der Raumluftqualität
DE10118078A1 (de) Stabiler Betrieb elektrischer Entladungsapparate zum Zwecke der Erzeugung aktiver Sauerstoffionen in Luft
DE10311255A1 (de) Lufttransport- und/oder Aufbereitungsanlagen mit katalytisch beschichteten Oberflächen luftberührender Flächen
DE112013001665T5 (de) Vorrichtung zum Reinigen des Klimaanlagensystems von Fahrzeugen mit Hilfevon katalytischer Strahlungsionisation
DE202006003737U1 (de) Vorrichtung zum Reinigen eines durch eine Lüftungsanlage geführten Gases, insbesondere zum Reinigen von durch eine Abluftanlage geführter Abluft aus einem Tierstall
WO2022117730A1 (fr) Dispositif de purification d'air, système de purification d'air et procédé de purification d'air d'un dispositif de purification d'air et d'un système de purification d'air
DE102013012268A1 (de) Verfahren und Vorrichtung zur Verbesserung der Raumluft
WO2021099112A1 (fr) Unité de filtration pour dispositif de purification d'air et dispositif de purification d'air
DE2658510A1 (de) Luftreinigungsgeraet
DE3301253A1 (de) Luftreinigungseinrichtung
DE19503937C2 (de) Verfahren und Vorrichtung zur Luftaufbereitung in geschlossenen Räumen
DE2508166A1 (de) Vorrichtung und verfahren zur anreicherung eines luftstromes mit ionen

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU BG BR CA CN CZ DE EE HU ID IL IN IS JP KR LT LV MX NO NZ PL RO RU SG SI SK TR UA US ZA

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REF Corresponds to

Ref document number: 19981840

Country of ref document: DE

Date of ref document: 20010809

WWE Wipo information: entry into national phase

Ref document number: 19981840

Country of ref document: DE

122 Ep: pct application non-entry in european phase
REG Reference to national code

Ref country code: DE

Ref legal event code: 8607