WO2012147050A1 - Dispositif autonettoyant et procédé pour purificateur d'air - Google Patents

Dispositif autonettoyant et procédé pour purificateur d'air Download PDF

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Publication number
WO2012147050A1
WO2012147050A1 PCT/IB2012/052111 IB2012052111W WO2012147050A1 WO 2012147050 A1 WO2012147050 A1 WO 2012147050A1 IB 2012052111 W IB2012052111 W IB 2012052111W WO 2012147050 A1 WO2012147050 A1 WO 2012147050A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
air cleaner
sonic
self
cleaning device
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.)
Ceased
Application number
PCT/IB2012/052111
Other languages
English (en)
Inventor
Weiran Wang
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of WO2012147050A1 publication Critical patent/WO2012147050A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
    • B01D46/682—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
    • B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
    • B01D46/762—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations involving sonic or ultrasonic waves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2273/24—Making use of acoustic waves, e.g. for measurements

Definitions

  • the present invention generally relates to a self -cleaning device, and more particularly, to a self-cleaning device and a method of cleaning an air cleaner.
  • Air cleaners or air filters are widely used in homes and offices to clean the air flowing into the inlet of the air cleaner, and transmit the clean air to the room through the outlet of the air cleaner.
  • the air cleaner usually includes at least one filter component by which dust and other pollutants in the air can be absorbed.
  • Fig. l shows a normal air cleaner with, for example, three filter components 10.
  • the air flows from the inlet to the outlet of the air cleaner in the direction indicated by arrow A, enabling the dust to be filtered by the filter components and the clean air is exhausted by a fan 20.
  • the dust is accumulated on one side of the filter component, i.e. the side facing the inlet, and will block the filter component after some time. This is a major reason why the filter component of the air cleaner must be replaced regularly, because the performance of the air cleaner decreases continuously as dust blocks more and more portions of the filter component.
  • the object of the present invention has been achieved by means of a self-cleaning device that can effectively remove the accumulated dust, enabling both the performance of the air cleaner and the lifetime of the filter component to be significantly increased.
  • a self -cleaning device for an air cleaner comprising at least one filter component having a frame, supporting rods connecting with the frame, and a filter material in the frame for adsorbing dust
  • the self -cleaning device comprises a sonic component mounted on the supporting rods and being moveable along the supporting rods for loosening accumulated dust; and a collecting component located at a position corresponding to that of the sonic component and being moveable with the sonic component for collecting dust loosened by the sonic component.
  • the collecting component is detachably mounted with respect to the sonic component and both are arranged on a side of the filter component facing the airflow into the air cleaner.
  • the dust - collecting component can be arranged on a side of the filter component facing the airflow into the air cleaner while the sonic component is arranged on the other side, which can effectively avoid pollution of the sonic component and also ensure quick collection of the loosened dust.
  • the sonic component and the collecting component are moveable along a guide member integrally formed with the supporting rods or additionally mounted on the supporting rods, and the guide member can be configured as any desired structure, such as a guide rail or a guide groove.
  • the sonic component may comprise a plurality of sonic elements spaced apart on the supporting rods according to the specific size of the filter component.
  • the sonic component can also be configured as a plate -shaped element with at least one sonic element arranged thereon, the plate -shaped element being configured to extend between opposite end rods of the frame and being arranged substantially perpendicularly to the direction of movement thereof.
  • sound waves generated by the sonic component have a wide frequency range from 300Hz to 1000Hz.
  • there is more than one filter component in one air cleaner and sonic components are not installed on all filter components.
  • the first filter component closest to an air inlet is much dirtier than the others, so that self-cleaning the first filter component may be enough from a business point of view, and accordingly the sonic component is preferably mounted on a filter component closest to the air inlet.
  • the collecting component may be a vacuum cleaner, which can generate a vacuum force with a power below 50W, and more particularly, with a power in the range of 5-20W.
  • a self -cleaning method for an air cleaner comprises the following steps:
  • a collecting component located at a position corresponding to the sonic component and being moveable with the sonic component.
  • the mechanism used to loosen dust is sonic resonance rather than mechanical shock.
  • the sonic component transfers sound waves of a certain frequency to the filter component and makes the filter component behave like a speaker. In such a way, the dust can resonate with the sound waves and can be loosened.
  • the filter component is kept in good condition by the self -cleaning device and method of the present invention, the performance of the air cleaner is increased, and the lifetime of the filter component is expected to be prolonged from three months to more than one year (depending on test conditions).
  • Fig. l schematically illustrates a normal air cleaner with at least one filter component therein;
  • Fig.2 illustrates an elevational view of a filter component, which has the sonic component according to an embodiment of this invention
  • Fig.3 which is similar to Fig.2, illustrates another embodiment of the sonic component
  • Fig.4 schematically illustrates an air cleaner equipped with the self-cleaning device according to this invention, in which the sonic component and the collecting component are arranged on the same side of the filter component;
  • Fig.5 is similar to Fig.4 except that the sonic component and the collecting component are arranged on different sides.
  • Fig.2 illustrates an exemplary embodiment of a self-cleaning device for an air cleaner, which is depicted as two sonic elements 31 on the filter component 10, while the collecting component has been omitted for clarity.
  • the filter component 10 of the air cleaner is known as dust filter in the art, and is usually configured to have a frame 11, a plurality of supporting rods 12 crosswise connected with the frame 11, and a filter material 13 in the frame 11 for adsorbing dust 60, such as dust gauze.
  • the sonic element 31 is preferably mounted on the supporting rods 12 to maximize the resonance range. Depending on the specific structure of the supporting rods, one or more sonic elements 31 can be arranged thereon.
  • the sonic element 31 can move along the supporting rods 12 for loosening accumulated dust 60.
  • the sonic element 31 shown in Fig.2 can move along the direction indicated by double-headed arrow B, so that the dust on the filter component can be loosened as much as possible.
  • the movement of the sonic element can be achieved by means of an electric control, which is a common technical means in the art and further details thereof need not be given herein.
  • a guide member which can be formed integrally with the supporting rods 12 or which can be additionally mounted on the supporting rods 12, is provided.
  • the guide member is a guide groove 51 shown in Fig.2, for example, which extends through the supporting rods 12 in the longitudinal direction.
  • the sonic element 31 can have a projection or other protruding shape, allowing it to be fitted into the guide groove 51 and move along a predetermined direction defined by the guide groove 51. It should be appreciated that the guide member can also extend through the supporting rods in the width direction, if desired.
  • sonic component is shown in Fig.3, in which the sonic component is configured as a plate-shaped element 32 with at least one sonic element 31 arranged thereon (only one sonic element is shown by way of example).
  • the plate-shaped element 32 can extend over an appropriate length between opposite end rods of the frame 11 and can be arranged substantially perpendicularly to the direction of movement thereof. In this way, the vibration generated by the sonic element 31 can be transmitted along the plate-shaped element 32 and to the supporting rod, so that the resonance range can be broadened and the number of sonic elements can be reduced.
  • Fig.3 also shows an embodiment of the guide member.
  • the guide member is configured as a guide rail 52 extending along the direction of movement of the plate-shaped element 32.
  • the plate-shaped element 32 accordingly may have a mating structure, such as a recess, to fit it to the guide rail 52 and allow it to move thereon.
  • the guide rail and the recess in the plate-shaped element are not exclusive configurations and can be interchangeable, that is, the guide member may still be a guide groove while the plate -shaped element is provided with a protruding feature as mentioned above.
  • the mating structures in the embodiment shown in Fig.2 are also interchangeable.
  • a collecting component 40 such as a vacuum cleaner, in some cases a normal handheld vacuum cleaner, is provided and located at a position corresponding to that of the sonic component 30.
  • the vacuum cleaner is preferably moveable with the sonic component for collecting dust loosened by the sonic component, which can effectively reduce the vacuum force so that the required power of the vacuum cleaner can be lowered to below 50W, particularly to a power in the range of 5-20W, and more particularly, to 10W.
  • Fig.4 and Fig.5 illustrate different embodiments of the self-cleaning device of this invention, wherein the collecting component 40 of the embodiment in Fig.4 is mounted integrally with the sonic component 30 and both of them are arranged on a side of the filter component 10, while the collecting component 40 of the embodiment in Fig.5 is arranged on a side of the filter component 10, but the sonic component 30 is arranged on the other side.
  • the device, especially the collecting component 40 thereof is preferably arranged on the side of the filter component 10 facing the air inlet, and it also can be appreciated that the collecting component 40 can be located slightly below the sonic component 30 so that little or no dust spillage will take place during self-cleaning.
  • the sonic component is mounted on the supporting rods of the filter component of the air cleaner and generates sound waves whose frequency is in the range of 300Hz-1000Hz to cause dust to resonate and loosen itself; during moving the sonic component along the supporting rods, the loosened dust is collected by the collecting component located at a position corresponding to the sonic component and being moveable with the sonic component.
  • a method can be manually implemented any time, or can be regularly or automatically implemented when the air cleaner detects that the filter components are partially blocked.
  • some detection members, such as sensors can be provided in the air cleaner, and when they detect that the fan RPM or power input significantly changes, it is likely that the filter components have become blocked.
  • the best choice is a wide -range sonic component and the input sound signal should cover all possible frequencies to remove most dust off the filter component.
  • a single-frequency component or narrow-range component such as 500Hz-800Hz, and more specifically 600Hz-700Hz.
  • the accumulated dust on the filter component can be significantly reduced, which can be evidenced by an actual experiment.
  • a clean filter component has a net weight of 55.3g, yet after it has been detached from an air cleaner used for three months in normal operating conditions, the weight of the filter component with accumulated dust is 56. lg. If the sonic component is switched on to generate sound vibration on the filter component and is reciprocated for five minutes, while the vacuum cleaner moves simultaneously to collect the dropped dust, the weight becomes 55.5g. That is to say, the vacuum force was not added and the sound vibration can be effective in removing dust. In this case, the effectiveness is about 75%. As regards consumers, they will be more willing to believe that the air cleaner is high-performance because they can see that the dust is collected by the self-cleaning device.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

Dispositif autonettoyant et procédé pour purificateur d'air, ledit dispositif autonettoyant comprenant un composant sonique monté sur les tiges de support et pouvant se déplacer sur lesdites tiges de support pour décoller la poussière accumulée ; et un composant collecteur en une position correspondant au composant sonique et pouvant se déplacer avec celui-ci pour collecter la poussière décollée par le composant sonique. Le dispositif autonettoyant et le procédé s'y rapportant selon la présente invention permettent d'éliminer efficacement la poussière, de façon que la performance du purificateur d'air et la durée de vie du composant de filtre puissent toutes deux être significativement augmentées.
PCT/IB2012/052111 2011-04-29 2012-04-27 Dispositif autonettoyant et procédé pour purificateur d'air Ceased WO2012147050A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNPCT/CN2011/073519 2011-04-29
CN2011073519 2011-04-29

Publications (1)

Publication Number Publication Date
WO2012147050A1 true WO2012147050A1 (fr) 2012-11-01

Family

ID=46148915

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/052111 Ceased WO2012147050A1 (fr) 2011-04-29 2012-04-27 Dispositif autonettoyant et procédé pour purificateur d'air

Country Status (1)

Country Link
WO (1) WO2012147050A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015048713A1 (fr) * 2013-09-30 2015-04-02 Elwha Llc Substrat autonettoyant
WO2017045857A1 (fr) * 2015-09-17 2017-03-23 Robert Bosch Gmbh Dispositif de filtrage pour dispositif d'aspiration
CN106955540A (zh) * 2016-01-12 2017-07-18 绿源工程顾问有限公司 声学辅助的空气过滤器及其空气过滤方法
US11708986B1 (en) * 2022-07-12 2023-07-25 Intellytic Ventures Ltd Smart IoT energy saving sound wave air filter system and use for air purifiers and a method of air filtration thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053031A (en) * 1959-10-19 1962-09-11 Pangborn Corp Sonic cleaning of dust filters
US4201556A (en) * 1978-04-07 1980-05-06 Olsson Mats A Device for cleaning fabric filters
US6221255B1 (en) * 1998-01-26 2001-04-24 Achyut R. Vadoothker Ultrasound-assisted filtration system
US20080085018A1 (en) * 2006-10-10 2008-04-10 Troxell Ronald C Apparatus and method for sonic cleaning of an air filter for wheeled and tracked vehicles
DE202009015589U1 (de) * 2009-11-16 2011-04-07 Heimer Lackieranlagen Und Industrielufttechnik Gmbh & Co. Kg Vorrichtung zum Abscheiden von Feststoffaerosolen aus der Luft

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053031A (en) * 1959-10-19 1962-09-11 Pangborn Corp Sonic cleaning of dust filters
US4201556A (en) * 1978-04-07 1980-05-06 Olsson Mats A Device for cleaning fabric filters
US6221255B1 (en) * 1998-01-26 2001-04-24 Achyut R. Vadoothker Ultrasound-assisted filtration system
US20080085018A1 (en) * 2006-10-10 2008-04-10 Troxell Ronald C Apparatus and method for sonic cleaning of an air filter for wheeled and tracked vehicles
DE202009015589U1 (de) * 2009-11-16 2011-04-07 Heimer Lackieranlagen Und Industrielufttechnik Gmbh & Co. Kg Vorrichtung zum Abscheiden von Feststoffaerosolen aus der Luft

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015048713A1 (fr) * 2013-09-30 2015-04-02 Elwha Llc Substrat autonettoyant
US9192278B2 (en) 2013-09-30 2015-11-24 Elwha Llc Self-cleaning substrate
WO2017045857A1 (fr) * 2015-09-17 2017-03-23 Robert Bosch Gmbh Dispositif de filtrage pour dispositif d'aspiration
CN106955540A (zh) * 2016-01-12 2017-07-18 绿源工程顾问有限公司 声学辅助的空气过滤器及其空气过滤方法
EP3192580A1 (fr) * 2016-01-12 2017-07-19 Green Energy Engineering Consultancy Limited Filtre à air assisté par acoustique et son procédé de filtration d'air
US10159925B2 (en) 2016-01-12 2018-12-25 Aurabeat Holdings Limited Acoustic aided air filter and a method of air filtration thereof
US11708986B1 (en) * 2022-07-12 2023-07-25 Intellytic Ventures Ltd Smart IoT energy saving sound wave air filter system and use for air purifiers and a method of air filtration thereof

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