EP2406011A1 - Procédé pour purifier un flux d'air et dispositif de purification - Google Patents

Procédé pour purifier un flux d'air et dispositif de purification

Info

Publication number
EP2406011A1
EP2406011A1 EP10711996A EP10711996A EP2406011A1 EP 2406011 A1 EP2406011 A1 EP 2406011A1 EP 10711996 A EP10711996 A EP 10711996A EP 10711996 A EP10711996 A EP 10711996A EP 2406011 A1 EP2406011 A1 EP 2406011A1
Authority
EP
European Patent Office
Prior art keywords
cleaning device
air flow
cleaning
inlet opening
flow
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Withdrawn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
EP10711996A
Other languages
German (de)
English (en)
Inventor
Manfred H. Langner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2406011A1 publication Critical patent/EP2406011A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/14—Plant or installations having external electricity supply dry type characterised by the additional use of mechanical effects, e.g. gravity
    • B03C3/155—Filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/36—Controlling flow of gases or vapour
    • B03C3/361—Controlling flow of gases or vapour by static mechanical means, e.g. deflector
    • B03C3/363—Controlling flow of gases or vapour by static mechanical means, e.g. deflector located before the filter

Definitions

  • the invention relates to a method for purifying an air flow, wherein a dielectrically impeded discharge is forced into a stream of air containing impurities and odors, and thereby a plasma is generated, before the air flow is subsequently passed through activated carbon or a comparable filter material.
  • Such a cleaning method for filtering out odors and impurities from an air flow is known, for example, from DE 10 2004 053 030 A1. It has been found that by generating a plasma in the airflow by passing it through a region in which a dielectrically impeded discharge is constantly forced by applying an alternating voltage, the particles contained in the air flow, and in particular the odorous molecular compounds ionized and / or dissociated, which in combination with a subsequent activated carbon filter or a comparable absorbent filter material, a surprisingly improved cleaning performance and detectable odor reduction can be achieved. Odor filters based on this process are already being offered and sold as standalone filter devices or as components of airflow treatment devices. It is known from practice that such odor filter in
  • Cleaning devices can be integrated, which use additional cleaning and / or filtering procedures
  • the air stream may or may have corresponding components in order to remove not only odors, but also particulate impurities from the air stream can.
  • Maintaining the air flow can be provided.
  • an increase in noise with increasing cleaning effect is usually unavoidable.
  • Extractor hoods or regularly used in inhabited premises supply air, exhaust air and circulating air systems not to.
  • the reduced flow rate has an advantageous effect in the subsequent purification steps, since individual particles or molecule compounds each stay longer in the region of the individual purification stages and can be separated or eliminated more effectively from the air flow.
  • the reduction of the flow velocity is not enforced due to an increased flow resistance, but by the expansion of a cross-sectional area in the flow channel - 4 - LAN 6352 PC
  • An improved separation of moisture and small liquid droplets can be achieved by guiding the air flow through an open-pored, hydrophilic foam material in a further process step after the diversion and reduction of the flow velocity and optionally before the electrostatic particle separation.
  • aerosols and hydrophilic foam material In the air flow located aerosols and
  • Liquid droplets and in particular small droplets of fat are deposited in the open-pore hydrophilic foam material from the air flow and collect below or in a lower region of the foam material.
  • the purified air flow is supplied to a heat exchanger in a subsequent process step.
  • the purification process for purifying the supply air is used, for example, in clean rooms or the like, additional conditioning and, if appropriate, air conditioning of the clean rooms can be achieved by the heat exchanger.
  • the cleaning method according to the invention is used for exhaust hoods or recirculation hoods in the private or commercial food preparation, the frequently heated runoff can be cooled to the ambient temperature before it leaves a cleaning device, or an energy recovery can be carried out before the cleaned airflow leaves the environment ,
  • a cleaning of the suction by means of at least one spray liquid spraying a spray nozzle is feasible.
  • the cleaning liquid can be carried out automatically depending on contamination of the suction area. If, with the use of suitable sensors, a strongly increasing contamination of the air flow by particles or the like is detected, the cleaning liquid can be sprayed during operation in order to improve the cleaning effect by depositing an additional separation of in - 6 - LAN 6352 PC
  • the invention also relates to a cleaning device for an air flow containing impurities and odors, with a plasma generating device which forces a dielectrically impeded discharge to generate the plasma by means of alternating voltage, and with a filter device containing an activated carbon or a comparable filter material.
  • the cleaning device has a housing with a slot-like inlet opening for the air flow and with a flow channel opening into the inlet opening, wherein in the curved flow channel a rounded or thickened one
  • End region exhibiting, extending substantially parallel to the slot-like inlet opening deflecting element is arranged.
  • the cleaning device arranged a laterally adjacent to the slot-like inlet opening - 7 - LAN 6352 PC
  • Transfer passage has, which deflects the air flow sucked through the inlet opening and the parallel to the slot-like inlet opening successively arranged plasma generating device and filter device supplies. Investigations have shown that, for example, at a width of the slot-like inlet opening of 2-3 cm, which extends in the longitudinal direction over 1 to 2 m, already usual flow volume of 1500 m 3 / h, for example, at a subsequent one-sided or double-sided
  • an electrostatic filter unit is arranged between the deflecting element and the plasma generating device.
  • the electrostatic filter unit is used to separate larger particles from the air flow, so that the following cleaning components such as the plasma generating device and the activated carbon filter are freed of a corresponding particle load, so that both the cleaning effect of these components increases, as well as their rapid addition or - 8 - LAN 6352 PC
  • Impairment of the cleaning performance is prevented by impurities.
  • an open-pore hydrophilic foam is arranged between the deflection element and the plasma generation device, which can in particular effectively deposit moisture and small liquid droplets.
  • a flame protection device is arranged between the deflecting element and the plasma generating device.
  • the flame protection device is expediently arranged in the flow direction either after the deflecting element or immediately before a subsequently arranged open-pore hydrophilic foam and prevents the foam material possibly loaded with numerous fat droplets from burning up.
  • the cleaning in the region of the curved running flow channel inspection openings or releasably attachable flow channel wall elements. In this way, a cleaning of the intake, in which the centrifugal separation of particulate
  • At least one spray nozzle spraying a cleaning liquid is arranged in the region of the flow channel.
  • a plurality of spray nozzles are expediently arranged along the slot-like inlet opening in such a way that the cleaning liquid sprayed through the spray nozzles can dissolve and remove deposits due to centrifugal force in the area of the flow channel without the sprayed cleaning liquid passing through the slot-like
  • Entrance opening could escape.
  • a collection channel for sprayed cleaning liquid is provided below the slot-like inlet opening, which opens into a collecting sump.
  • a heat exchanger is arranged in front of an outlet opening for the air flow from the cleaning device.
  • Plasma generating device is arranged a fan.
  • the fan is expediently arranged approximately centrally between the slot-like inlet opening and an outlet opening for the air flow.
  • the fan can be operated without additional sound insulation, which in turn would usually be associated with a significant flow resistance and would have affected or reduced the effect of the fan.
  • Fig. 2 is a front sectional view of a cleaning device
  • Fig. 3 is a sectional view of the cleaning device shown in Fig. 2 from another direction.
  • a first method step 1 the air to be cleaned is sucked through a slit-like inlet opening of a cleaning device explained in more detail in the following FIGURE and deflected along a curved flow channel, in order subsequently to reach bottom an extension of the cross-sectional area of the flow channel to be braked. Due to the forced deflection, a centrifugal force-dependent deposition of particulate contaminants on an outer wall of the flow channel is brought about. This separation of particulate impurities is enhanced, or supported by the subsequent reduction, or lowering of the
  • the sucked and freed in a first step 1 of larger particles air flow is then redirected depending on the design and shape of the cleaning device again and fed to the subsequently usually rectilinearly arranged cleaning stages.
  • the air flow is passed through a flame guard to avoid that especially fatty deposits could ignite in a subsequent cleaning stage and thereby damage or destroy the cleaning device.
  • a method step 3 the air flow is passed through an open-pored, hydrophilic foam material, by means of which moisture and liquid droplets are deposited. Due to the open-pore configuration of the filter material, the deposited droplets in the foam material can flow downwards due to gravity and be collected or removed there.
  • the flow rate is adjusted and optionally maintained in order to ensure a reliable discharge of the sucked air flow through the cleaning device can.
  • Ventilation device is advantageously surrounded on both sides by other cleaning components, so that no troublesome fan noise penetrate to the outside without costly soundproofing measures.
  • the air flow is conducted in a known manner in the process steps 6 and 7 by a plasma that is generated by means of alternating voltage by forced dielectrically impeded discharges, or subsequently passed through an activated carbon filter.
  • odors are eliminated and final impurities are deposited. Due to the already previously performed cleaning components accumulate hardly any impurities in the activated carbon filter, so that long maintenance intervals are possible and the operation of the cleaning device is facilitated.
  • the cleaned air flow Before the cleaned air flow leaves the cleaning device, it is passed through a heat exchanger in a last method step 8 in order to be able to adjust or specify the temperature of the cleaned air flow to the environment and possibly recover subsequently no longer usable heat energy.
  • Cleaning device 9 has a housing 10 with a slot-like inlet opening 11.
  • Inlet opening 11 extends almost over the entire length of the cleaning device 9 and has a width, or opening width of about 2 to 3 cm.
  • a curved flow channel 12 begins with the slot-like inlet opening 11. The flow channel is guided around a deflecting element 13 with a rounded, thickened end area 14 and then widens in a slowing down area 15.
  • a schematically indicated by arrows 16 air flow is sucked through the slot-like inlet opening 11 into the flow channel 12 and deflected around the deflecting element 13. Supported by the reduction in a flow velocity of the air flow taking place in the deceleration region 15, particles are deposited on the centrifugal force 12 preferably on a side wall 17 of the flow channel 12 opposite the deflection element 13.
  • two spray nozzles 18 are arranged rotatably and optionally movable, which can spray at intervals or continuously a cleaning liquid for cleaning the flow channel 12 of deposits and the like.
  • particulate impurities can, if necessary, be washed out of the air flow by means of a spray in a manner already known.
  • the slot-like inlet opening 11 is formed on a bottom edge opposite the thickened end region 14 of the deflecting element 13 by a channel-shaped collecting sump 19 for
  • the sprayed cleaning liquid for example, water if necessary - 15 - LAN 6352 PC
  • Slowing down area 15 passed air flow is then deflected again by a laterally arranged next to the slot-like inlet opening 11 transfer channel 20, to be subsequently supplied to the straight above and along the slot-like inlet opening 11 arranged subsequent cleaning components.
  • a very compact design is possible, can be arranged at the same time very small amount of space and combined with each other numerous cleaning components.
  • the air flow diverted through the transfer passage 20 is then first through a flame guard 21, through a layer of an open-pore, hydrophilic
  • a fan 24 by means of which the flow rate of the air flow can be maintained and, if necessary, increased.
  • the fan 24 is surrounded on all sides by cleaning components and by the housing 10 of the cleaning device 9, so that an unavoidable noise development of the fan 24 is insulated even without expensive soundproofing measures by the surrounding cleaning components.
  • a plasma generating device 25 an activated carbon filter 26 and a heat exchanger 27 are arranged before the air flow exits through an outlet opening 28 from the cleaning device 9 again.
  • the housing 10 of the cleaning device 9 has in the region of the above the slot-like inlet opening 11 arranged cleaning components inspection openings, or inspection flaps 29, which allow maintenance of the individual cleaning components.
  • the deflecting element 13 forming bottom flaps 30 are arranged to facilitate maintenance and cleaning of the flow channel 12.
  • Bottom flaps 30 formed, removable portions 13 of the deflector 13 can also be other flow channel side walls hinged or removable to facilitate cleaning and maintenance.

Landscapes

  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Treating Waste Gases (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Electrostatic Separation (AREA)

Abstract

L'invention concerne un procédé pour purifier un flux d'air, selon lequel, dans un flux d'air contenant des impuretés et des odeurs, une décharge à barrière diélectrique est forcée, générant ainsi un plasma, avant que le flux d'air passe à travers du charbon activé (26) ou un matériau de filtrage similaire. Selon l'invention, on dévie tout d'abord le flux d'air vers une zone d'entrée, puis on réduit la vitesse du flux afin de forcer une élimination d'impuretés particulaires due à la force centrifuge.
EP10711996A 2009-03-13 2010-03-04 Procédé pour purifier un flux d'air et dispositif de purification Withdrawn EP2406011A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910012680 DE102009012680A1 (de) 2009-03-13 2009-03-13 Verfahren zur Reinigung einer Luftströmung und Reinigungsvorrichtung
PCT/EP2010/001347 WO2010102749A1 (fr) 2009-03-13 2010-03-04 Procédé pour purifier un flux d'air et dispositif de purification

Publications (1)

Publication Number Publication Date
EP2406011A1 true EP2406011A1 (fr) 2012-01-18

Family

ID=42235338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10711996A Withdrawn EP2406011A1 (fr) 2009-03-13 2010-03-04 Procédé pour purifier un flux d'air et dispositif de purification

Country Status (3)

Country Link
EP (1) EP2406011A1 (fr)
DE (1) DE102009012680A1 (fr)
WO (1) WO2010102749A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010042795A1 (de) 2010-10-22 2012-04-26 BSH Bosch und Siemens Hausgeräte GmbH Filtermodul und Verfahren zum Betreiben eines Filtermoduls
CN102489111A (zh) * 2011-12-09 2012-06-13 中电投远达环保工程有限公司 多污染物烟气全面净化一体化装置
DE102021128346A1 (de) 2021-10-29 2023-05-04 Woco Gmbh & Co. Kg Raumluftreiniger

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003070355A1 (fr) * 2002-02-20 2003-08-28 Langner Manfred H Procede et installation de filtrage pour separer un produit de condensation et des matieres analogues
DE102004053030A1 (de) * 2004-10-30 2006-05-04 Langner, Manfred H. Verfahren zum Herausfiltern von Gerüchen aus einer Luftströmung und Filtervorrichtung mit einem Geruchsfilter
DE102006029303A1 (de) * 2006-06-23 2007-12-27 Langner, Manfred H. Filtervorrichtung für Dunstabzugshauben, Ablufthauben, Umlufthauben oder dergleichen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844741A (en) * 1972-10-11 1974-10-29 P Dimitrik Air purifier
JP2004020006A (ja) * 2002-06-14 2004-01-22 Chuen Electronics Co Ltd 空気清浄機
JP2005000750A (ja) * 2003-06-10 2005-01-06 Jiro Kayama 喫煙用空気浄化装置
US7767169B2 (en) * 2003-12-11 2010-08-03 Sharper Image Acquisition Llc Electro-kinetic air transporter-conditioner system and method to oxidize volatile organic compounds
JP2006280698A (ja) * 2005-04-01 2006-10-19 Matsushita Electric Ind Co Ltd 空気浄化装置
US20120118150A1 (en) * 2006-05-17 2012-05-17 Christopher Brizes Air treatment system and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003070355A1 (fr) * 2002-02-20 2003-08-28 Langner Manfred H Procede et installation de filtrage pour separer un produit de condensation et des matieres analogues
DE102004053030A1 (de) * 2004-10-30 2006-05-04 Langner, Manfred H. Verfahren zum Herausfiltern von Gerüchen aus einer Luftströmung und Filtervorrichtung mit einem Geruchsfilter
DE102006029303A1 (de) * 2006-06-23 2007-12-27 Langner, Manfred H. Filtervorrichtung für Dunstabzugshauben, Ablufthauben, Umlufthauben oder dergleichen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2010102749A1 *

Also Published As

Publication number Publication date
WO2010102749A1 (fr) 2010-09-16
DE102009012680A1 (de) 2010-09-16

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