EP2979602A1 - Filtre a air a retrolavage - Google Patents

Filtre a air a retrolavage Download PDF

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Publication number
EP2979602A1
EP2979602A1 EP15177489.0A EP15177489A EP2979602A1 EP 2979602 A1 EP2979602 A1 EP 2979602A1 EP 15177489 A EP15177489 A EP 15177489A EP 2979602 A1 EP2979602 A1 EP 2979602A1
Authority
EP
European Patent Office
Prior art keywords
air
filter
clean
backwashable
valve element
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.)
Granted
Application number
EP15177489.0A
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German (de)
English (en)
Other versions
EP2979602B1 (fr
Inventor
Miron SERNECKI
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.)
Vorwerk and Co Interholding GmbH
Original Assignee
Vorwerk and Co Interholding GmbH
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 Vorwerk and Co Interholding GmbH filed Critical Vorwerk and Co Interholding GmbH
Publication of EP2979602A1 publication Critical patent/EP2979602A1/fr
Application granted granted Critical
Publication of EP2979602B1 publication Critical patent/EP2979602B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/20—Means for cleaning filters

Definitions

  • the invention relates to a backwashable air filter, in particular for a vacuum cleaner, with a dust air space from a clean air space separating filter element which is traversed in a filter operation of air to be cleaned from the direction of the dust air space in the direction of the clean air space, the clean air space is associated with a clean air outlet.
  • Backwashable air filters of the aforementioned type are known in the art. These are commonly used to clean dust and / or dirt-laden air. In the context of vacuum cleaners, these are used to protect the blower of the vacuum cleaner from occupying with absorbed dust / dirt. Due to the suction operation of the vacuum cleaner, there is regularly a progressive occupancy of the filter element with dust. The filter element contaminates with increasing operating time, so that at regular intervals a backwashing of the air filter is required.
  • the publication DE 195 17197 A1 describes, for example, a backwashable air filter for a vacuum cleaner, which has a cleaning nozzle arranged in the filter element, which is flowed through for the purpose of cleaning by means of a compressor of the vacuum cleaner against the usual flow direction for a filter operation.
  • the compressor has two valve blocks, with the help of the flow direction of filter operation is switched to backwash.
  • the valve blocks are to be switched manually.
  • a disadvantage of the above-mentioned air filters is that they only work in combination with devices with respect to a backwash, which a Have compressor with corresponding valve blocks for switching the flow direction.
  • the invention proposes a backwashable air filter according to the preamble of the main claim, the Reinluftauslass Symposium has a valve element which is formed in a backwash due to the opening of a Mau Kunststoffeinlassweges, which is downstream of the clean air outlet in the flow direction for a filter operation, a Allow backwashing of the filter element with ambient air.
  • the air filter is designed so that it can be backwashed regardless of the type and design of the device in which it is used.
  • the ambient air required for the backwash operation is drawn into the air filter through the secondary air inlet path, so that it is not necessary to provide a compressor with corresponding valve blocks for switching the flow direction from the clean air outlet area in the direction of the dust air space.
  • valve element close the clean air outlet region by means of a stream of air flowing in a backwash operation from the clean air space in the direction of the dust air space and at least one Releasing the secondary air inlet path, which connects the clean air space with the ambient air surrounding the air filter.
  • the air filter has a valve element which opens and closes depending on the direction of the air flow flowing through the air filter and thereby enables either the filter operation or the backwash operation.
  • the switching of the air filter from a filter operation to a backwash operation or vice versa is effected by the flow direction of the air flow flowing through the air filter itself.
  • the air filter is connected from the direction of the dust air space to a suction fan.
  • a suction fan for example the suction fan of a second vacuum cleaner.
  • the inventive design and arrangement of the valve element prevents the resulting during the suction of the air filter on the dust air space side suction air flow back to the non-operating suction fan of the backwashable air filter having device.
  • the suction fan is fluidly separated from the air filter, so that the suction fan can not be set in rotation and thus damage to the electronics is excluded.
  • the valve element according to the invention simultaneously fulfills two different functions, namely on the one hand the closing of the clean air outlet to avoid co-rotation of the suction fan, and on the other hand, the release of a Finelufteinlassweges between the clean air space and the environment of the filter element, so that Ambient air, which is needed to clean the air filter, can be sucked into the clean air space.
  • valve element is displaceably arranged on the clean air outlet region, in particular in the clean air outlet region.
  • valve element is arranged on or in the clean air outlet region, that this is displaced as a result of the air flow flowing from the clean air space in the direction of the dust-laden air space.
  • the valve element may be adapted to the shape of the clean air outlet area with respect to its geometric shape. If the clean air outlet region is, for example, cylindrical, the valve element may advantageously also be a cylindrical element which is displaceable coaxially within the clean air outlet region.
  • valve element and the clean air outlet region have mutually corresponding secondary air inlet openings which can be arranged relative to one another by displacement of the valve element relative to the clean air outlet region such that a secondary air inlet path is released.
  • the valve element can thus be displaced relative to the clean air outlet region so that secondary air inlet openings formed correspondingly in the valve element and the clean air outlet region lie next to one another, so that ambient air can enter the clean air chamber.
  • the valve element and the clean air outlet region are, for example, cylindrical elements
  • the valve element can be displaced coaxially with the clean air outlet region until the secondary air inlet openings lie next to each other in the radial direction and thus release a secondary air inlet path for the ambient air.
  • Both the valve element and the clean air outlet area may have a plurality of secondary air inlet openings or even each have a secondary air inlet opening.
  • the valve element has a check valve, which is arranged and designed such that it closes the clean air outlet region during a flow through the air filter by means of an air flow flowing from the clean air space in the direction of the dust air space.
  • the valve element closes the clean air outlet automatically when the clean air space is flowed through contrary to the usual flow direction for a filter operation.
  • the clean air outlet area is closed at a certain suction force of the air flow flowing in the direction of the dust air space, so that the air flow can not react on the suction fan.
  • the check valve has at least one pivotable non-return valve.
  • two symmetrical non-return flaps may be arranged within the clean air outlet area, which as a result of the reversal of the flow direction upon a change from a filter operation to a backwash operation in the direction of the clean air space, i. in the opening cross-section of the clean air outlet, are pivoted, which closes the Reinluftauslass Symposium.
  • valve member is connected by means of a return element, in particular a spring, with the clean air outlet that the valve element is displaced against the restoring force of the return element and in release of a Fine Kunststoffeinlassweges in the direction of the dust-laden air in closed during a graphairesiere Industriesauslass Symposium.
  • a return element in particular a spring
  • This particularly advantageous embodiment is the Valve element shifted with closed check valve in the direction of the dust air.
  • the suction force of the force acting on the valve element air flow is used, which acts on the check valve, eg.
  • the return element With the aid of the return element arranged between the clean air outlet area and the valve element, it is ensured that a predefined pressure within the clean air outlet area is reached or undershot before the valve element is displaced and thus ambient air can pass through the secondary air inlet path into the clean air space. If the pressure is sufficient to open the secondary air inlet, an equilibrium is advantageously established between the amount of ambient air flowing into the clean air space and the amount of air extracted by means of the external suction fan from the backwashable air filter.
  • the restoring element may advantageously be a spring, but other restoring elements which fulfill the same purpose are also conceivable.
  • the backwashable air filter is vented again and the valve element is moved by the restoring force of the return element back to its original position, at the same time the Maulufteinlassweg is closed again.
  • the check valve arranged in the clean air outlet area is also opened again at the same time, for example, the pivotable non-return flaps are again pivoted into an open position.
  • valve element and a cleaning nozzle are arranged in the backwashing of the air filter to each other so that ambient air sucked in by the Maulufteinlassweg is forced into the cleaning nozzle.
  • the valve element can be displaced within the clean air outlet region in such a way that it directly contacts the cleaning nozzle in a backwash position so that the air sucked through the secondary air inlet path can flow exclusively into the cleaning nozzle and thus clean the filter element.
  • the valve element and the cleaning nozzle bear against a common contact part, whereby a flow path into the cleaning nozzle is predetermined.
  • the cleaning nozzle is a rotary air nozzle rotatably mounted in the clean air space.
  • the cleaning nozzle has at least one pointing in the direction of the filter element nozzle opening, which is arranged and formed so that the outflowing air, the cleaning nozzle set in rotation and thus cleaning of the inner surface of the filter element over the entire circumference can be performed.
  • the cleaning nozzle is a stationary nozzle, which has such a plurality of nozzle openings, that thus also a cleaning comprising the entire peripheral surface is possible.
  • the invention also proposes a vacuum cleaner which has a backwashable air filter of the aforementioned type.
  • the inventive design of the backwashable air filter can be cleaned by the suction mouth of the vacuum cleaner is brought, for example, in contact with a suction mouth of a second vacuum cleaner.
  • the suction of the backwashable air filter then takes place immediately after switching on the second vacuum cleaner, wherein the dust collected in the filter element of the vacuum cleaner according to the invention is sucked into the second vacuum cleaner.
  • a method for operating a backwashable air filter in particular a backwashable air filter of the aforementioned type, proposed, wherein the backwashable air filter for a backwash is fluidly connected to a suction opening of the air filter opposite to a flow direction for a filter operation acting suction fan wherein a valve element associated with a clean air outlet region of the air filter closes the clean air outlet region by means of an air flow flowing from a clean air space in the direction of dust air space and releases at least one secondary air inlet path for the admission of ambient air into the clean air space.
  • the back-flushable air filter 2 has a cylindrical filter element 3, in which coaxially a likewise cylindrical cleaning nozzle 6 with nozzle openings 7 for backwashing the filter element 3 during a backwash operation is arranged.
  • the air filter 2 has a valve element 9 with check valves 13, which are open in the illustrated filter operation, so that the filtered air reaches a suction fan 16 of the vacuum cleaner 1.
  • FIG. 2 shows the in FIG. 1 shown air filter 2 with closed check valves 13th
  • FIG. 3 shows the in FIG. 1 illustrated air filter 2 during a backwash operation.
  • the check valves 13 are closed, wherein the valve element 9 is displaced in the direction of the cleaning nozzle 6, so that secondary air inlet openings 11 are released, through which ambient air can be drawn into the air filter 2 for cleaning the filter element 3.
  • Fig. 4 shows a detailed schematic diagram of in FIG. 1 illustrated backwashable air filter 2 in a filter operation.
  • the backwashable air filter 2 has the filter element 3, which, for example, a material with filter properties, for example.
  • a nonwoven includes.
  • the filter element 3 separates a clean air space 4 of the backwashable air filter 2 from a dust air space 8.
  • the clean air space 4 is that portion of the air filter 2, which lies in the flow direction of the dust-laden air in front of the filter element 3.
  • the dust-air chamber 8 is that region of the air filter 2 which lies behind the filter element 3 in the flow direction of the air which is exposed to dust.
  • the cleaning nozzle 6 is arranged with the nozzle openings 7. The cleaning nozzle 6 is not flowed through during the filtering operation of the air filter 2.
  • the clean air space 4 is assigned a clean air outlet area 5, by means of which the air cleaned by means of the filter element 3 can reach a suction blower 16 of the vacuum cleaner 1.
  • the suction fan 16 is not part of the air filter 2.
  • the valve element 9 is arranged, which is designed to close the clean air outlet 5 for a backwash operation of the air filter 2 and at least one clean air chamber 4 with release the secondary air inlet path 10 connecting the ambient air.
  • the valve element 9 has the secondary air inlet opening 11, which corresponds to a secondary air inlet opening 11 of the clean air outlet area 5.
  • the valve element 9 also has a check valve 12, which has the two check valves 13 in the present example.
  • a return element 14, here a spring is arranged between the valve element 9 and the clean air outlet region 5, a return element 14, here a spring, is arranged.
  • Fig. 5 shows the cleaning nozzle 6, which can be used to clean the filter element 3 coaxially into the clean air space 4 of the air filter 2.
  • the cleaning nozzle 6 has, for example, two nozzle openings 7 which extend in slot-like fashion in the axial direction of the cleaning nozzle 6.
  • the nozzle openings 7 have an air outlet direction, which with respect to the radial direction of the cleaning nozzle 6 substantially at an angle not equal to 0 °, so that the cleaning nozzle 6 is set in rotation with air in rotation.
  • Fig. 6 shows the backwashable air filter 2 according to Fig. 4 with closed check valves 13 (analog Fig. 2 ).
  • This position takes the air filter 2 in a change from a filter operation in a backwash one.
  • the air filter 2 is acted upon via the suction opening 15 by a suction fan, for example the suction fan of a second vacuum cleaner, with negative pressure, so that the arranged in the clean air outlet 5 check valve 12 closes.
  • the two non-return valves 13 of the check valve 12 are pivoted into the clean air outlet region 5, so that the clean air outlet region 5 is fluidly separated from the suction fan 16 of the vacuum cleaner 1.
  • the suction fan of the same vacuum cleaner can also be used by switching it to the suction opening 15 of the air filter 2.
  • Fig. 7 shows the in the FIGS. 4 and 6 illustrated back-flushable air filter 2 during the backwash operation (analog Fig. 3 ).
  • the check valve 12 is closed, wherein the suction air flow of the external suction blower seeks to pull the check valves 13 in the direction of the dust-laden air space 8.
  • it becomes movable at the clean air outlet portion 5 arranged valve element 9 is pulled in the direction of the cleaning nozzle 6, wherein the valve element 9 moves against the restoring force of the return element 14.
  • the secondary air inlet openings 11 formed inside the clean air outlet area 5 and the valve element 9 come next to each other with respect to a radial direction of the air filter 2, so that an air inlet path 10 is released.
  • the air filter 2 is, as exemplified in Fig. 1 shown integrated into a vacuum cleaner 1.
  • the air filter 2 is thereby installed in the vacuum cleaner 1 that it is disposed within the Saugluftweg, that is, between a suction mouth of the congestion suction device 1 and the suction fan 16 of the vacuum cleaner 1.
  • the air filter 2 is thereby cleaned, ie backwashed, by connecting a second vacuum cleaner to the suction mouth of the first vacuum cleaner 1.
  • the backwashable air filter 2 is in the in the Fig. 1 and 4 illustrated filter operation.
  • air is sucked through the suction opening 15 of the air filter 2 by means of the suction fan 16 of the vacuum cleaner 1.
  • the sucked air passes through the dust air chamber 8 of the air filter 2 to the filter element 3.
  • the air to be filtered flows through the filter element 3, wherein the dust contained in the air is filtered.
  • the filtered air then flows within the clean air space 4 past the (not in operation) cleaning nozzle 6, without enforcing them.
  • the filtered air passes from the clean air space 4 into the clean air outlet area 5 and to the suction fan 16.
  • the clean air outlet area 5 is opened in order to clear the path to the suction fan 16.
  • the valve element 9 is in an opening position, wherein the two check valves 13 on the inner wall of the clean air outlet region 5, so that a maximum flow cross section of the clean air outlet region 5 is available.
  • the suction mouth of the vacuum cleaner 1 and thus also the suction opening 15 of the air filter 2 is fluidically connected to a suction fan, such as a suction fan of a second vacuum cleaner, which acts on the suction port 15 with negative pressure.
  • a suction fan such as a suction fan of a second vacuum cleaner
  • the resulting suction air flow in the direction of the suction opening 15 acts on the check valves 13 of the check valve 12, so that they are pivoted into the clean air outlet region 5 and close the clean air outlet region 5. This situation is in Fig. 6 shown.
  • the sucked air passes from the Finelufteinlassweg 10 through the cleaning nozzle 6, the filter element 3 and finally the suction opening 15 to the suction fan.
  • the nozzle openings 7 of the cleaning nozzle 6 are not radially aligned, but rather are at a certain angle not equal to 0 °, the cleaning nozzle 6 rotates due to a flow of air.
  • the nozzle openings 7 rotate past the inner wall of the filter element 3, so that the filter element 3 can be cleaned over the entire circumference.
  • the dust contained in the filter element 3 is released from the filter element 3 and passes through the dust air space 8 to the suction opening 15th
  • the thus cleaned air filter 2 can now be used again for a filter operation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP15177489.0A 2014-08-01 2015-07-20 Filtre a air a retrolavage Active EP2979602B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014110940.6A DE102014110940A1 (de) 2014-08-01 2014-08-01 Rückspülbarer Luftfilter

Publications (2)

Publication Number Publication Date
EP2979602A1 true EP2979602A1 (fr) 2016-02-03
EP2979602B1 EP2979602B1 (fr) 2020-02-12

Family

ID=54065655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15177489.0A Active EP2979602B1 (fr) 2014-08-01 2015-07-20 Filtre a air a retrolavage

Country Status (5)

Country Link
EP (1) EP2979602B1 (fr)
JP (1) JP6655902B2 (fr)
CN (1) CN105311890B (fr)
DE (1) DE102014110940A1 (fr)
ES (1) ES2774338T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016118807A1 (de) 2015-12-21 2017-06-22 Vorwerk & Co. Interholding Gmbh Rückspülbarer Luftfilter und Staubsauger mit einem rückspülbaren Luftfilter
DE102016119196A1 (de) 2016-10-10 2018-04-12 Vorwerk & Co. Interholding Gmbh Staubsauger mit einem Filterelement
DE102016119194A1 (de) 2016-10-10 2018-04-12 Vorwerk & Co. Interholding Gmbh Staubsauger mit einem Filterelement
DE102016119195A1 (de) 2016-10-10 2018-04-12 Vorwerk & Co. Interholding Gmbh Staubsauger mit einem Filterelement
JP2021151483A (ja) * 2014-12-10 2021-09-30 アイロボット・コーポレーション 清掃ロボット用デブリ排出

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DE102015108558A1 (de) * 2015-05-29 2016-12-01 Vorwerk & Co. Interholding Gmbh Luftfilter
CN108125620B (zh) * 2016-12-01 2024-05-24 天佑电器（苏州）有限公司 吸尘器及其过滤器自清洁方法
SE542082C2 (en) 2017-05-02 2020-02-18 Husqvarna Ab Valve, use of such valve, separator comprising such valve and method of cleaning a separator body
DE112018006379T5 (de) 2017-12-14 2020-09-03 Koki Holdings Co., Ltd. Entstauber
DE102017223172A1 (de) * 2017-12-19 2019-06-19 Vorwerk & Co. Interholding Gmbh Steuerung einer Luftreinigungsvorrichtung
CN108309141A (zh) * 2018-02-08 2018-07-24 南通航运职业技术学院 一种应用于港口的除尘装置
WO2019210853A1 (fr) * 2018-05-04 2019-11-07 添可电器有限公司 Procédé de nettoyage de filtre et appareil de nettoyage de filtre
JP7492318B2 (ja) * 2019-06-05 2024-05-29 東芝ライフスタイル株式会社 電気掃除機
EP3772310A1 (fr) * 2019-08-05 2021-02-10 Hilti Aktiengesellschaft Dispositif de compensation des variations de pression
CN110665300A (zh) * 2019-11-06 2020-01-10 上海蓝科石化环保科技股份有限公司 一种连续气固过滤装置和工艺
CN113540551B (zh) * 2021-06-22 2022-09-06 万向一二三股份公司 一种叠片机极片吸附夹手
CN113566343A (zh) * 2021-09-07 2021-10-29 韦氏（苏州）医疗科技有限公司 医用空气净化型空调系统
JP2023056894A (ja) * 2021-10-08 2023-04-20 パナソニックＩｐマネジメント株式会社 回収装置に接続可能な掃除機
CN114631753B (zh) * 2022-02-25 2023-06-06 深圳银星智能集团股份有限公司 清洁设备
GB2618379A (en) * 2022-05-06 2023-11-08 Dyson Technology Ltd Vacuum cleaning system

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DE19517197A1 (de) 1995-05-11 1996-11-14 Manfred Butsch Selbstreinigender Staubsauger
EP1092382A2 (fr) * 1999-10-12 2001-04-18 WAP Reinigungssysteme GmbH & Co. Dépoussièrage du filtre dans un aspirateur
WO2009031961A1 (fr) * 2007-09-07 2009-03-12 Aktiebolaget Electrolux Aspirateur
WO2010028787A1 (fr) * 2008-09-13 2010-03-18 Nilfisk-Advance A/S Nettoyage de filtre dans un aspirateur de saletés avec élément à clapet

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Publication number Priority date Publication date Assignee Title
DE19517197A1 (de) 1995-05-11 1996-11-14 Manfred Butsch Selbstreinigender Staubsauger
EP1092382A2 (fr) * 1999-10-12 2001-04-18 WAP Reinigungssysteme GmbH & Co. Dépoussièrage du filtre dans un aspirateur
WO2009031961A1 (fr) * 2007-09-07 2009-03-12 Aktiebolaget Electrolux Aspirateur
WO2010028787A1 (fr) * 2008-09-13 2010-03-18 Nilfisk-Advance A/S Nettoyage de filtre dans un aspirateur de saletés avec élément à clapet

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021151483A (ja) * 2014-12-10 2021-09-30 アイロボット・コーポレーション 清掃ロボット用デブリ排出
JP7342061B2 (ja) 2014-12-10 2023-09-11 アイロボット・コーポレーション 清掃ロボット用デブリ排出
US12004704B2 (en) 2014-12-10 2024-06-11 Irobot Corporation Debris evacuation for cleaning robots
DE102016118807A1 (de) 2015-12-21 2017-06-22 Vorwerk & Co. Interholding Gmbh Rückspülbarer Luftfilter und Staubsauger mit einem rückspülbaren Luftfilter
DE102016119196A1 (de) 2016-10-10 2018-04-12 Vorwerk & Co. Interholding Gmbh Staubsauger mit einem Filterelement
DE102016119194A1 (de) 2016-10-10 2018-04-12 Vorwerk & Co. Interholding Gmbh Staubsauger mit einem Filterelement
DE102016119195A1 (de) 2016-10-10 2018-04-12 Vorwerk & Co. Interholding Gmbh Staubsauger mit einem Filterelement

Also Published As

Publication number Publication date
EP2979602B1 (fr) 2020-02-12
JP2016034484A (ja) 2016-03-17
CN105311890A (zh) 2016-02-10
CN105311890B (zh) 2020-06-16
DE102014110940A1 (de) 2016-02-04
ES2774338T3 (es) 2020-07-20
JP6655902B2 (ja) 2020-03-04

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