EP2543302B1 - Procédé d'utilisation d'un aspirateur doté d'un séparateur à cyclone et aspirateur doté d'un séparateur à cyclone - Google Patents

Procédé d'utilisation d'un aspirateur doté d'un séparateur à cyclone et aspirateur doté d'un séparateur à cyclone Download PDF

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Publication number
EP2543302B1
EP2543302B1 EP12401141.2A EP12401141A EP2543302B1 EP 2543302 B1 EP2543302 B1 EP 2543302B1 EP 12401141 A EP12401141 A EP 12401141A EP 2543302 B1 EP2543302 B1 EP 2543302B1
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EP
European Patent Office
Prior art keywords
fan
valve apparatus
vacuum cleaner
cyclone separator
receiving 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.)
Active
Application number
EP12401141.2A
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German (de)
English (en)
Other versions
EP2543302A3 (fr
EP2543302A2 (fr
Inventor
Andre Bertram
Stefan Tiekötter
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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.)
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Publication date
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Publication of EP2543302A2 publication Critical patent/EP2543302A2/fr
Publication of EP2543302A3 publication Critical patent/EP2543302A3/fr
Application granted granted Critical
Publication of EP2543302B1 publication Critical patent/EP2543302B1/fr
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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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • 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
    • A47L9/0072—Mechanical means for controlling the suction or for effecting pulsating action
    • 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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2805—Parameters or conditions being sensed
    • A47L9/2821—Pressure, vacuum level or airflow
    • 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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2805—Parameters or conditions being sensed
    • A47L9/2831—Motor parameters, e.g. motor load or speed
    • 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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled

Definitions

  • the invention relates to a method for operating a vacuum cleaner with a motor-driven fan and with a device arranged on the suction side of the fan for picking up an air-dust mixture, a dust separator in the form of at least one cyclone separator and optionally a post-filter being arranged between the pick-up device and the fan .
  • the invention also relates to a vacuum cleaner with a motor-driven fan and with a device arranged on the suction side of the fan for picking up an air-dust mixture, a dust separator in the form of at least one cyclone separator and optionally a post-filter being arranged between the pick-up device and the fan.
  • Vacuum cleaners of the type mentioned are generally known, for example from EP 1 674 020 B1 .
  • dust is separated by vortex formation in the air mixed with dust and dirt.
  • the centrifugal forces necessary for dust separation are therefore not immediately available, consequently a large part of the sucked up dust and dirt particles pass the cyclone in the switch-on phase and get into the secondary filter, which then clogs, and possibly even into the fan or into the exhaust air filter that flows through the fan are downstream.
  • the pamphlet DE 10 2009 041 728 A1 discloses a vacuum cleaner with a motor-driven fan and a device for collecting an air-dust mixture.
  • a cyclone separator is arranged between the fan and the receiving device, a valve device being arranged between the receiving device and the cyclone separator. With the valve device, the flow path from the receiving device via the cyclone separator to the fan can be switched if the degree of filling of the cyclone separator exceeds a limit value.
  • the vacuum cleaner disclosed has the disadvantage that when the vacuum cleaner is switched on there is no or only a reduced separation efficiency of the cyclone separator.
  • the pamphlet EP 2 153 768 B1 discloses a vacuum cleaner with a fan, a pick-up device and a cyclone separator. Between the fan and the A valve device is arranged in the cyclone separator with which the flow path from the fan to the cyclone separator can be switched.
  • the vacuum cleaner disclosed also has the disadvantage that when the vacuum cleaner is switched on, there is no or only a reduced separation efficiency of the cyclone separator.
  • the invention thus presents the problem of improving a method for operating a cyclone vacuum cleaner or the vacuum cleaner itself with regard to its mode of operation.
  • the advantages that can be achieved with the invention result on the process side in that at least one valve device is arranged between the receiving device and the fan, with which the flow path from the receiving device via the cyclone separator to the fan is only available when a predetermined minimum value for the volume flow generated by the fan or a is switchable with the volume flow correlating variable.
  • the vacuum cleaner is operated with an ineffective pick-up device in the switch-on and blower run-up phase, so that dirt and dust particles are not sucked in.
  • the same advantages result from the device side through a vacuum cleaner in which at least one valve device is arranged between the receiving device and the fan, with which the flow path from the receiving device via the cyclone separator to the fan can be switched.
  • the achievement of the minimum value can be determined by a pressure sensor arranged in the flow path between the valve device and the fan.
  • a pressure sensor is already present in higher-quality vacuum cleaners with a pressure-dependent control or regulation of the blower output, so that no additional components are required in addition to the valve device to implement the method according to the invention. It is then expedient if a control device switches the valve device as a function of a negative pressure value determined by the pressure sensor.
  • the minimum negative pressure at which the cyclone separator works as required can be determined in tests and stored as a switching criterion in the device control.
  • control device the valve device
  • the control device can be switched on after a predetermined fan or fan motor speed has been reached.
  • the required speed can also be determined experimentally and then stored in the device control as a switching criterion.
  • a predetermined fan running time can also be specified by the controller, after which it can be assumed that the predetermined minimum value is present. This must also be determined experimentally.
  • valve device automatically switches the flow path when a predetermined minimum negative pressure or minimum volume flow is present, for example as a spring-controlled valve device.
  • the valve device can expediently be designed as a two-way valve.
  • it is arranged between the receiving device and the cyclone separator. This advantageously ensures that a vortex is already building up in the cyclone before the receiving device is operated.
  • the post-filter can be designed as a washable foam filter. In this installation variant of the valve device, a return air line should be laid from the pressure side of the blower to the valve device.
  • valve device is arranged between the cyclone and the fan.
  • This has the advantage, on the one hand, that the air does not flow through the cyclone during the switch-on and blower start-up phase and, in this respect, no dirt is whirled up from the collecting container.
  • a return air line is not absolutely necessary; the valve device can then also be connected to the ambient air of the vacuum cleaner via a bypass, whereby relatively clean outside air is then sucked in.
  • the cyclone is only acted upon with suction air after the valve device has been switched over. However, it can be assumed that when the fan is running, the air vortices necessary for centrifugal separation are suddenly formed and the proportion of dust and dirt particles that pass through the cyclone is very low.
  • FIG. 1 to 3 various alternatives of cyclone vacuum cleaners according to the invention are shown.
  • the components required for air routing are shown as a block diagram.
  • the vacuum cleaner itself is indicated by 1 here. It has a motor-driven fan in a known manner.
  • the fan stage and the drive motor are represented here as a unit by the circle 2 and are referred to below as fan 2.
  • the fan 2 blows air 22 on the pressure side 21 through an exhaust air filter 3 from the vacuum cleaner housing, not shown.
  • a negative pressure is generated on the suction side 23 of the fan 2, which ensures that a suction air flow is created. This enters the flow path of the vacuum cleaner 1 at a receiving device 4 and thereby entrains dust and dirt particles (not shown).
  • the receiving device 4 is generally adapted to the surface to be processed and can be a suction nozzle, a turbo or electric brush, a furniture brush, a crevice nozzle or another suction attachment, but also a suction pipe or a suction hose, with which one of the aforementioned suction attachments can be the device housing can be connected. There it is connected to a cyclone separator 5 via a corresponding flow path. In the further flow path between the cyclone separator 5 and the fan, an after-filter 6 is optionally arranged. According to the invention, a valve arrangement, here in the form of a two-way valve 7, is also arranged at a suitable point between the receiving device 4 and the fan.
  • valve 7 is placed between the receiving device 4 and the cyclone separator 5.
  • the air duct between the suction hose coupling (not shown) and the cyclone separator 5 is a suitable installation location.
  • the outlet side 71 of the valve 7 is connected to the further flow path to the blower 2, in this case the flow path to the cyclone separator 5.
  • An input side 72 is fluidly connected to the receiving device 4, and a further input side 73 is connected to the pressure side 21 of the fan 2 via a return air line 74. Due to the design as a two-way valve, the flow path can optionally be switched from one of the inlet sides 72 or 73 to the outlet side 71.
  • the vacuum cleaner 1 also has a device control 8, preferably in the form of a microprocessor control. From there a control line 81 leads to the blower 2 and a control line 82 to the valve 7, as well as a data line 83 to a pressure sensor 9 between valve 7 and cyclone separator 5.
  • a volume flow sensor (not shown) can also be installed in front of the blower 5 or on the blower motor speed sensor not shown may be present.
  • a spring-controlled two-way valve 7 can be used. In this case, the control line 82 is not necessary.
  • the two-way valve 7 is arranged between the secondary filter 6 and the fan 2.
  • the output side 71 of the valve 7 is directly connected to the fan 2, the input side 72 to the flow path behind the post-filter 6, the input side 73 is again connected to the pressure side 21 of the fan 2 via a return air line 74.
  • the variant according to Figure 3 has a two-way valve 7 which is arranged between the cyclone separator 5 and the secondary filter 6.
  • the output side 71 of the valve 7 is connected to the flow path behind the post-filter 6, the input side 72 to the output of the cyclone separator 5, the input side 73 is not connected to a return air line 74, but to a bypass 75 that passes through an opening in the vacuum cleaner housing (not shown) sucks in ambient air.
  • a bypass 75 instead of a return air line 74 would also be in the variant according to Figure 2 conceivable.
  • Figure 4 shows a diagram in which the course of the fan or motor speed n and the volume flow q when the fan 2 is switched on as a function of time Figure 1 to 3 is shown. It can be seen that both the speed n and the volume flow q increase after the fan 2 has been switched on at time to and asymptotically approach a value n max or q max .
  • the course of the negative pressure which arises on the suction side 23 of the blower 2 is dependent on the opening cross-sections in the flow path, such as those generated by various receiving devices 4, for example.
  • a time t1, a volume flow q1, a speed n1 or a negative pressure p1 can be assigned to this event. It is sufficient to determine one of these parameters and to switch the valve 7 only after this parameter has been reached in such a way that the input 72 is now open and the input 73 is blocked. Then the pick-up of dust by the pick-up device 4 becomes possible.
  • the parameters mentioned can be determined using suitable sensors, for example the pressure sensor 9 shown, and the valve 7 can then be switched by the control device 8. Alternatively, it is possible to detect the pressure p 1 or the volume flow q 1 by a spring mechanism integrated in the valve 7 and to switch the valve 7 automatically and independently of the device control 8.
  • the secondary filter 6 can optionally be dispensed with.
  • the use of an exhaust air filter 3 is then advantageous.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Cyclones (AREA)

Claims (13)

  1. Procédé permettant de faire fonctionner un aspirateur (1) doté d'un ventilateur (2) entraîné par un moteur et d'un dispositif (4) destiné à recevoir un mélange air-poussière disposé sur le côté aspiration (23) du ventilateur (2), dans lequel un séparateur de poussière sous la forme d'au moins un séparateur à cyclone (5) et éventuellement un filtre secondaire (6) est disposé entre le dispositif de réception (4) et le ventilateur (2), dans lequel au moins un dispositif de soupape (7) est disposé entre le dispositif de réception (4) et le ventilateur (2), caractérisé en ce que le chemin d'écoulement du dispositif de réception (4) au ventilateur (2) en passant par le séparateur à cyclone (5) ne peut être commuté par le dispositif de soupape que lorsqu'une valeur minimale (q1, n1, t1, p1) prédéfinie du débit volumique (q) produit par le ventilateur (2) ou une grandeur (n, t, p) en corrélation avec le débit volumique est présente.
  2. Procédé selon la revendication 1, caractérisé en ce que l'atteinte de la valeur minimale (p1) est déterminée par un capteur de pression (9) disposé dans le chemin d'écoulement entre le dispositif de soupape (7) et le ventilateur (2).
  3. Procédé selon la revendication 2, caractérisé en ce qu'une commande d'appareil (8) commute le dispositif de soupape (7) en fonction d'une valeur de pression négative (p) déterminée par le capteur de pression (9).
  4. Procédé selon la revendication 1, caractérisé en ce qu'une commande d'appareil (8) met en marche le dispositif de soupape (7) après avoir atteint une vitesse de rotation (n1) prédéfinie du ventilateur ou du moteur de ventilateur.
  5. Procédé selon la revendication 1, caractérisé en ce qu'un dispositif de commande met en marche le dispositif de soupape après une durée de fonctionnement (t1) prédéfinie du ventilateur, dans lequel la durée de fonctionnement (t1) est dimensionnée de telle manière que, après son écoulement, on peut supposer que la valeur minimale (q1, n1, t1, p1) prédéfinie est présente.
  6. Procédé selon la revendication 1, caractérisé en ce que le dispositif de soupape (7) commute automatiquement le chemin d'écoulement en présence d'une dépression minimale (p1) prédéfinie ou d'un débit volumique minimal (q1).
  7. Procédé selon la revendication 6, caractérisé en ce que le dispositif de soupape (7) commute le chemin d'écoulement de manière commandée par un ressort.
  8. Aspirateur (1) doté d'un ventilateur (2) entraîné par un moteur et d'un dispositif (4) destiné à recevoir un mélange air-poussière disposé sur le côté aspiration (23) du ventilateur (2), dans lequel un séparateur de poussière sous la forme d'au moins un séparateur à cyclone (5) et éventuellement un filtre secondaire (6) est disposé entre le dispositif de réception (4) et le ventilateur (2), dans lequel au moins un dispositif de soupape (7) est disposé entre le dispositif de réception (4) et le ventilateur (2), par lequel le chemin d'écoulement du dispositif de réception au ventilateur en passant par le séparateur à cyclone peut être commuté, caractérisé en ce qu'un dispositif de commande commute le dispositif de soupape (7) en fonction d'une valeur de dépression déterminée par un capteur de pression.
  9. Aspirateur (1) selon la revendication 8, caractérisé en ce que le dispositif de soupape (7) est réalisé sous la forme d'une soupape à deux voies.
  10. Aspirateur selon la revendication 8 ou 9, caractérisé en ce que le dispositif de soupape (7) est disposé entre le dispositif de réception (4) et le séparateur à cyclone (5).
  11. Aspirateur (1) selon la revendication 8 ou 9, caractérisé en ce que le dispositif de soupape est disposé entre le séparateur à cyclone (5) et le ventilateur (2).
  12. Aspirateur (1) selon la revendication 10 ou 11, caractérisé en ce qu'une conduite de retour d'air (74) est posée du côté pression du ventilateur (2) vers le dispositif de soupape (7).
  13. Aspirateur (1) selon la revendication 11, caractérisé en ce que le dispositif de soupape (7) peut être relié à l'air ambiant de l'aspirateur (1) par une dérivation (75).
EP12401141.2A 2011-07-08 2012-07-06 Procédé d'utilisation d'un aspirateur doté d'un séparateur à cyclone et aspirateur doté d'un séparateur à cyclone Active EP2543302B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011051683A DE102011051683A1 (de) 2011-07-08 2011-07-08 Verfahren zum Betreiben eines Staubsaugers mit einem Zyklonabscheider und Staubsauger mit einem Zyklonabscheider

Publications (3)

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EP2543302A2 EP2543302A2 (fr) 2013-01-09
EP2543302A3 EP2543302A3 (fr) 2017-01-04
EP2543302B1 true EP2543302B1 (fr) 2020-09-09

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EP12401141.2A Active EP2543302B1 (fr) 2011-07-08 2012-07-06 Procédé d'utilisation d'un aspirateur doté d'un séparateur à cyclone et aspirateur doté d'un séparateur à cyclone

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US (1) US10076218B2 (fr)
EP (1) EP2543302B1 (fr)
DE (1) DE102011051683A1 (fr)

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US9756999B2 (en) * 2014-12-22 2017-09-12 Aktiebolaget Electrolux Vacuum cleaner filtration system with filter cleaning mode
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JP2021166595A (ja) * 2020-04-09 2021-10-21 株式会社マキタ クリーナ
DE102020127421A1 (de) * 2020-10-19 2022-04-21 Miele & Cie. Kg Staubsauger und Verfahren zum Betrieb eines Staubsaugers

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Also Published As

Publication number Publication date
DE102011051683A1 (de) 2013-01-10
EP2543302A3 (fr) 2017-01-04
US10076218B2 (en) 2018-09-18
US20130008468A1 (en) 2013-01-10
EP2543302A2 (fr) 2013-01-09

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