WO2017155458A1 - Dispositif d'épuration d'air intérieur à l'aide de ventilateurs électroniques - Google Patents

Dispositif d'épuration d'air intérieur à l'aide de ventilateurs électroniques Download PDF

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Publication number
WO2017155458A1
WO2017155458A1 PCT/SE2017/050223 SE2017050223W WO2017155458A1 WO 2017155458 A1 WO2017155458 A1 WO 2017155458A1 SE 2017050223 W SE2017050223 W SE 2017050223W WO 2017155458 A1 WO2017155458 A1 WO 2017155458A1
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WO
WIPO (PCT)
Prior art keywords
fan
electrode
air flow
inlet
air
Prior art date
Application number
PCT/SE2017/050223
Other languages
English (en)
Inventor
Andrzej Loreth
Original Assignee
Eurus Airtech Ab
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 Eurus Airtech Ab filed Critical Eurus Airtech Ab
Publication of WO2017155458A1 publication Critical patent/WO2017155458A1/fr

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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
    • B03C3/08—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
    • 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
    • B03C3/12—Plant or installations having external electricity supply dry type characterised by separation of ionising and collecting stations
    • 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
    • B03C3/32—Transportable units, e.g. for cleaning room air
    • 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
    • B03C3/368—Controlling flow of gases or vapour by other than static mechanical means, e.g. internal ventilator or recycler
    • 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
    • B03C3/40—Electrode constructions
    • B03C3/41—Ionising-electrodes
    • 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
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/49—Collecting-electrodes tubular
    • 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
    • B03C3/40—Electrode constructions
    • B03C3/60—Use of special materials other than liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • 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
    • 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
    • F24F8/194—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 by filtering using high voltage
    • 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
    • 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
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/10—Ionising electrode has multiple serrated ends or parts
    • 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 an air cleaning apparatus, particularly an apparatus for cleaning of room air, which here concerns air in residential houses and offices. More specifically the invention relates to an air cleaning apparatus comprising partly an ionization device, with at least one corona electrode and a counter electrode, partly a dust collector connected electrostatically to a high voltage source with a flow passage for the air that is to be cleaned and consisting of two band formed electrode elements arranged alternately and wound around a bobbin and with a slit distance from each other and arranged to lie on different potentials, wherein an electrostatic field is created in the slit between the electrodes.
  • the air transport is taken care of by fans.
  • the cleaning ability of the air cleaner is defined by specifying the number of m3 clean air that an air cleaner may generate per hour or in English with the designation CADR which stands for Clean Air Delivery Rate.
  • the sound level from the air cleaner is specified in decibel (dBA).
  • a sound level exceeding 30 dBA may be experienced as disturbing in an otherwise quiet environment such as, e.g., a bedroom.
  • the demands of the National Board of Housing is today at 30 dBA.
  • An air cleaner which is to be used round-the-clock should be able to manage 30 dBA in sound level, which in combination with a decrease in particles in the indoor air, as recommended by the Asthma Allergy Association (Astma Allergi Forening), should put great demands on an air cleaner.
  • an air cleaner adapted for a 16 m2 bedroom should have an equivalent clean air generation (CADR) corresponding to approximately 72 m3.
  • a survey of the performance of the air cleaners shows that it is few air cleaners that manage 72 m3 CADR at a sound level lower than 30 dBA.
  • the above-mentioned air cleaners use the ionization concept described in inter alia WO 2010/036176 A1.
  • a carbon fibre brush is arranged at the inlet of the air cleaner, wherein the counter electrode surrounds the air intake of the device.
  • the generated ions at the corona electrode may, thanks to the position of the carbon fibre brush, propagate with respect to the counter electrode in the closest environment at the air intake. Due to this, the physical size of the air cleaners, viewed in the direction of the air flow through the device, may be reduced thanks to the fact that the ionization chamber is situated outside the body of the device.
  • the present invention shows a different method for creation, for an air cleaning apparatus of the type mentioned by way of introduction, of a built-in ionization chamber, i.e., within the enclosure of the device without this taking up space at the expense of the flat dimension of the device.
  • the invention is explained in the following with reference to the appended drawing, wherein;
  • Fig. 1 shows schematically a cross-section through an air cleaning apparatus according to the invention.
  • the device according to the present invention consists of an air flow channel 1 , wherein a DC-fan 3 is arranged close to the inlet of the air flow channel, and in the air flow direction is followed by a circular condenser separator 2 consisting of two strip formed electrode elements connected to separate poles of a high voltage source.
  • the fan shown in Fig. 1 has a diameter of 140 mm and the suitable largest distance to the inlet grating 6 is approximately 3 to 4 cm.
  • the inlet grating 6 is circular and adapted with a slightly larger radius than the radius of the fan, wherein the grating has an arched form, it may for example be formed as a part of a sphere. The arched form bulges outwards, so that it is convex outwards.
  • a conical surface (the counter electrode 5), of conducting or semiconducting material or coating, is arranged between the inlet of the DC fan and the circular walls of the air flow channel.
  • the counter electrode 5 and the plastic grating 6 coincide in level with the walls of the air flow channel 1.
  • a carbon fibre brush (corona electrode 4) is arranged quite close to the inlet grating 6 and axially, wherein the carbon fibre brush is electrically connected to one pole of the high voltage source, wherein the counter electrode 5 is electrically connected to the other pole of the high voltage source.
  • the DC fan F has a diameter of 140 mm and the inlet channel has a diameter of approximately 200 mm.
  • the axial distance between the motor of the fan and the inlet grating PG is in the shown embodiment approximately 40 mm, wherein- as is shown in Fig. 1 - the dimension of the of the ionization chamber, comprising the axial distance between the counter electrode 5 and the inlet grating 6, narrows measured radially and in the direction towards the walls of the air flow channel.
  • the counter electrode 5 extends from the circumference of the DC fan in the direction towards the walls of the air flow channel, viewed in the radial direction, wherein at least a part of the surface of the counter electrode 5, which surface is electrically connected to one of the poles of high voltage, is situated upstream of the corona electrode 4 (the carbon fibre brush) viewed in the direction of the air flow through the device.
  • air cleaners may be designed with very narrow dimensions, wherein the inlet part of the DC fan is also used as ion chamber.
  • the increasing dimensions of the air flow channel decreases the efficiency of the ionization chamber, wherein the present invention is at its best use with the radial dimensions not being larger than the radius of the corresponding DC fan plus approximately 40 mm.
  • the largest axial distance between the inlet grating 6 and the fan 3 corresponds to 50 mm.
  • the corona electrode is designed as a carbon fibre brush. It can be designed as a point axially directed towards the inlet grating.
  • the present invention is not limited to any specific polarity when it comes to the connection of the electrode elements of the condenser separators or the polarity of the corona electrode.
  • the corona electrode may be connected to, e.g., a pole of the high voltage source connected to earth, wherein the counter electrode may be connected to another pole of the high voltage source, negative as well as positive.
  • the fan shown in Fig. 1 is described as a DC fan.
  • the advantage with DC fans in relation to AC is their exceptionally low energy consumption.
  • an AC fan may be used under the condition that this, viewed from the side of the inlet grating 6, is designed of an electrically insulating material or coating.
  • the described inlet grating 6 in the form of a plastic net may be exchanged with a plastic grating formed in a tool intended for that purpose, but it is essential that the extension of the inlet grating 6 in the direction of the air flow through the same is small, preferably less that 2-3 mm.
  • the inlet grating may also be made of another electrically insulating material than plastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrostatic Separation (AREA)

Abstract

L'invention concerne un dispositif d'épuration d'air intérieur, lequel dispositif comprend au moins un canal d'écoulement d'air (1) dans lequel au moins un séparateur de condenseur (2), constitué par deux éléments d'électrode ou deux groupes d'éléments d'électrode reliés à un pôle respectif d'une source de haute tension, est disposé. Le transport d'air est effectué par l'intermédiaire du ventilateur (3), et la charge électrique des particules s'effectue à l'aide d'une électrode à effet couronne (4) et d'une contre-électrode (5), l'électrode à effet couronne (4) et la contre-électrode (5) étant connectées à des pôles séparés d'une source de haute tension et étant disposées à l'entrée du canal d'écoulement d'air. Un réseau d'entrée (6) est disposé à l'entrée du canal d'écoulement d'air, le ventilateur (3) étant disposé en aval du réseau d'entrée (6), suivi par un séparateur de condenseur. Une contre-électrode (5) entoure le ventilateur (3), et l'électrode à effet couronne (4) est disposée axialement par rapport au réseau d'entrée (6) et de façon à faire face à ce dernier, la position de la contre-électrode (5) la plus proche de l'électrode à effet couronne et la plus proche du ventilateur, vue dans la direction de l'écoulement d'air à travers le canal d'écoulement d'air, se trouvant en aval de la position de l'électrode à effet couronne.
PCT/SE2017/050223 2016-03-10 2017-03-08 Dispositif d'épuration d'air intérieur à l'aide de ventilateurs électroniques WO2017155458A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1650328 2016-03-10
SE1650328-6 2016-03-10

Publications (1)

Publication Number Publication Date
WO2017155458A1 true WO2017155458A1 (fr) 2017-09-14

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PCT/SE2017/050223 WO2017155458A1 (fr) 2016-03-10 2017-03-08 Dispositif d'épuration d'air intérieur à l'aide de ventilateurs électroniques

Country Status (1)

Country Link
WO (1) WO2017155458A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10980911B2 (en) 2016-01-21 2021-04-20 Global Plasma Solutions, Inc. Flexible ion generator device
US11283245B2 (en) 2016-08-08 2022-03-22 Global Plasma Solutions, Inc. Modular ion generator device
US11344922B2 (en) 2018-02-12 2022-05-31 Global Plasma Solutions, Inc. Self cleaning ion generator device
US11581709B2 (en) 2019-06-07 2023-02-14 Global Plasma Solutions, Inc. Self-cleaning ion generator device
US11695259B2 (en) 2016-08-08 2023-07-04 Global Plasma Solutions, Inc. Modular ion generator device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9602210L (sv) * 1996-06-04 1997-12-05 Loreth Andrzej Apparathölje till elektrostatisk luftrenare
US5980614A (en) * 1994-01-17 1999-11-09 Tl-Vent Ab Air cleaning apparatus
US6203600B1 (en) * 1996-06-04 2001-03-20 Eurus Airtech Ab Device for air cleaning
US6398852B1 (en) * 1997-03-05 2002-06-04 Eurus Airtech Ab Device for air cleaning
WO2010036176A1 (fr) * 2008-09-24 2010-04-01 Eurus Air Tech Ab Appareil d'épuration d'air
EP2908068A1 (fr) * 2014-02-18 2015-08-19 Blueair AB Dispositif de purification d'air avec conduit de ventilation
WO2016204688A1 (fr) * 2015-06-17 2016-12-22 Andrzej Loreth Dispositif pour le nettoyage d'air intérieur

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5980614A (en) * 1994-01-17 1999-11-09 Tl-Vent Ab Air cleaning apparatus
SE9602210L (sv) * 1996-06-04 1997-12-05 Loreth Andrzej Apparathölje till elektrostatisk luftrenare
US6203600B1 (en) * 1996-06-04 2001-03-20 Eurus Airtech Ab Device for air cleaning
US6398852B1 (en) * 1997-03-05 2002-06-04 Eurus Airtech Ab Device for air cleaning
WO2010036176A1 (fr) * 2008-09-24 2010-04-01 Eurus Air Tech Ab Appareil d'épuration d'air
EP2908068A1 (fr) * 2014-02-18 2015-08-19 Blueair AB Dispositif de purification d'air avec conduit de ventilation
WO2016204688A1 (fr) * 2015-06-17 2016-12-22 Andrzej Loreth Dispositif pour le nettoyage d'air intérieur

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10980911B2 (en) 2016-01-21 2021-04-20 Global Plasma Solutions, Inc. Flexible ion generator device
US11980704B2 (en) 2016-01-21 2024-05-14 Global Plasma Solutions, Inc. Flexible ion generator device
US11283245B2 (en) 2016-08-08 2022-03-22 Global Plasma Solutions, Inc. Modular ion generator device
US11695259B2 (en) 2016-08-08 2023-07-04 Global Plasma Solutions, Inc. Modular ion generator device
US11344922B2 (en) 2018-02-12 2022-05-31 Global Plasma Solutions, Inc. Self cleaning ion generator device
US11581709B2 (en) 2019-06-07 2023-02-14 Global Plasma Solutions, Inc. Self-cleaning ion generator device
US12015250B2 (en) 2019-06-07 2024-06-18 Global Plasma Solutions, Inc. Self-cleaning ion generator device

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