EP0563788B1 - Procédé de fonctionnement d'un aspirateur à interruption automatique et aspirateur pour la mise en oeuvre du procédé - Google Patents

Procédé de fonctionnement d'un aspirateur à interruption automatique et aspirateur pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0563788B1
EP0563788B1 EP93104911A EP93104911A EP0563788B1 EP 0563788 B1 EP0563788 B1 EP 0563788B1 EP 93104911 A EP93104911 A EP 93104911A EP 93104911 A EP93104911 A EP 93104911A EP 0563788 B1 EP0563788 B1 EP 0563788B1
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EP
European Patent Office
Prior art keywords
dirt
suction
volume flow
electrical
tool
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.)
Expired - Lifetime
Application number
EP93104911A
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German (de)
English (en)
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EP0563788A1 (fr
Inventor
Rainer Oberdorfer-Bögel
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.)
WAP Reinigungssysteme GmbH and Co
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WAP Reinigungssysteme GmbH and Co
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Publication of EP0563788A1 publication Critical patent/EP0563788A1/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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2857—User input or output elements for control, e.g. buttons, switches or displays
    • 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
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • A47L7/0023—Recovery tanks
    • A47L7/0028—Security means, e.g. float valves or level switches for preventing overflow
    • 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
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • A47L7/0042—Gaskets; Sealing means
    • 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
    • A47L9/19—Means for monitoring filtering operation
    • 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
    • A47L9/2836—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
    • A47L9/2842—Suction motors or blowers

Definitions

  • the invention relates to a method for operating a vacuum cleaner with automatic shutdown and a vacuum cleaner for performing this method according to the preamble of claim 1.
  • Such vacuum cleaners are generally used in conjunction with a power tool or the like, the power tool having suction slots in order to be able to vacuum off contaminants generated by the power tool and be supplied to the vacuum cleaner.
  • the problem with vacuum cleaners in connection with a power tool is that different, dust-generating power tools with different cross-sectional areas and with different suction hoses are connected from the power tool to the vacuum cleaner to a single vacuum cleaner.
  • a certain automatic switch-off is now arranged within the vacuum cleaner in order to be able to switch off the vacuum cleaner and / or the tool in the case of a certain impermissibly high suction resistance in connection with the connected tool, or in the event of filter contamination of the vacuum cleaner.
  • DE-U-8 704 714 shows a vacuum cleaner with air volume control, in which the air volume conveyed or its intake speed is recorded and is kept essentially constant by means of a control system. This regulation only works depending on the fill level of the filter; an adaptation to device-related changes in the suction resistance is not provided.
  • the invention is therefore based on the object of developing a method for operating a vacuum cleaner in such a way that, regardless of the suction hose diameter used and other circumstances influencing the efficiency of the suction on the power tool, care is always taken to ensure that the power tool is not sucked off with a too low volume flow .
  • the technical teaching of claim 1 serves to solve the problem.
  • Circumstances that could lead to an unacceptable drop in the minimum volume flow on the power tool are e.g. a decrease in the operating voltage of the vacuum cleaner, the speed of the turbine decreasing and thereby a lower volume flow being sucked off.
  • Other circumstances include the use of different suction hoses with different diameters, which also influences the volume flow on the power tool.
  • the volume flow prevailing in the vacuum cleaner is measured and included in a calculation formula, on the basis of which a minimum volume flow not to be undercut is calculated, when it is reached the power tool and / or (possibly with a time delay) the vacuum cleaner are switched off.
  • volume flow per unit of time is recorded on the intake side of the turbine fan wheel.
  • the differential pressure is measured in the area of a Venturi orifice, which is arranged in front of the suction side of the fan wheel of the turbine.
  • this minimum volume flow depends on a number of factors, namely, for example, the degree of soiling of the power tool, the degree of soiling of the suction hose, the degree of soiling of the filter bag and the filter, the speed of the turbine (and thus also fluctuations in the network) and from other circumstances more.
  • a switch with several switch positions is arranged on the control panel of the vacuum cleaner, with which different minimum volume flows can be specified on a scale arranged around the switch, at which the vacuum cleaner and / or the power tool are switched off (if one Power tool is switched on).
  • the minimum volume flow assigned to the respective power tool is e.g. determined by the trade association, determined and in future documented on the nameplate and the operating instructions for the power tool.
  • the suction hose diameter is available as a coded number through correspondingly arranged contacts in the connecting sleeve of the suction hose, and that this coding is tapped via a corresponding contact arrangement in the inlet opening of the vacuum cleaner.
  • volume flow measurements directly in the inlet area of the vacuum cleaner, i.e. For example, in the area of the inlet opening, so as not to fall below a minimum volume flow.
  • a vacuum cleaner 1 is shown schematically, which has in its cover 2 a fan wheel 16 which is part of a turbine 28 (see Figure 2) and which is driven by an electric motor, not shown.
  • the vacuum cleaner 1 also has a dirt container 13 in which a filter bag 14 is arranged in a manner known per se.
  • the filter bag 14 is connected in an airtight manner to an inlet opening 33, to which a suction hose 17 attaches, which is connected to an electric tool 18.
  • a filter 15 which is designed, for example, as a pleated filter.
  • the filter 15 covers a ventilation grille 22 on the clean air side, through which the air sucked in through the filter bag 14 and through the filter 15 is sucked in by the turbine and flows out into the cover 2 in the direction of the arrows shown.
  • the turbine 28 has outlet openings 39, the turbine being held in upper and lower seals 30.
  • the lower seal 30 is arranged in the area of a receiving plate 29, while the upper seal 30 is arranged in the area of a clamping plate 31.
  • a wire mesh 38 is arranged on the underside of the turbine in the area of the receiving plate 29, in the area of which a venturi screen 21 is arranged.
  • the venturi cover 21 consists of two tube pieces 41, 42 arranged coaxially to one another, which form two annular chambers 40, 44 between them, the lower annular chamber 40 being separated from the upper annular chamber 44 by a horizontal transverse partition 43.
  • One port 45 for the decrease in pressure P4, for the one vacuum line, is now in the area of the lower annular chamber 40, while the other port 46 for the decrease in pressure P3 is in the area of the upper annular chamber 44.
  • the differential pressure cell 20 is therefore connected to the connections 45, 46.
  • FIG. 3 a volume flow diagram is drawn in FIG. 3, which works with the differential pressure method as it is constructed in FIG. 2.
  • switch-off point 51 is always on this straight line 47 regardless of the voltage, and this switch-off point corresponds, for example, to a differential pressure of 250 Pa at a volume flow of 26 cbm / h.
  • the working range is in the direction of arrow 52, starting from point 49, down until the lower switch-off point 51 is reached.
  • a signal must first be generated, which can be given optically or acoustically. After generating this signal, the power tool can optionally be switched off.
  • an optical or acoustic signal lights up in point 51 and the vacuum turbine may be switched off after a certain delay.
  • a volume flow switch is arranged on the front of the device, e.g. selectable volume flows from 25 cbm / h to 100 cbm / h in several stages and can be selected.
  • each volume flow value is assigned a pressure switch with a fixed switch-off value that can be selected from the switch.
  • the switch-off time i.e. change the switch-off point 51.
  • the selection of the volume flow is based either on the diameter of the suction hose used or on the connecting piece diameter of the power tool used.
  • this suction device according to the invention can be adapted to all power tools on the market and their suction nozzle.
  • the advantage of the differential pressure decrease is that you are independent of the nominal voltage of the turbine and independent of the atmospheric pressure, i.e. it does not matter whether you have the turbine at sea level or on a mountain peak of 2000 m.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Cleaning In General (AREA)

Claims (5)

  1. Procédé pour faire fonctionner un aspirateur de saletés à arrêt automatique de la turbine et éventuellement d'un outil électrique raccordé à l'aspirateur, en cas de dépassement de la charge de saletés du filtre et/ou du sac-filtre, étant précisé que le sac-filtre est disposé dans le réservoir de saletés et qu'on fait déboucher dans celui-ci le manchon de raccordement (3) d'un tuyau d'aspiration (17) éventuellement relié à un outil électrique dont le raccordement électrique est branché à une prise du secteur disposée sur l'aspirateur de saletés, et étant précisé que pour détecter une charge de saletés excessive du filtre (15) et/ou du sac-filtre (14), on enregistre le courant volumétrique par unité de temps, côté aspiration de la roue de ventilateur (16) de la turbine (28), caractérisé en ce que le courant volumétrique par unité de temps est déterminé grâce à un enregistrement de la pression différentielle ( Delta p=p3-p4
    Figure imgb0004
    ) dans la zone d'un venturi (21) qui est disposé avant le côté aspiration de la roue de ventilateur (16) de la turbine (28).
  2. Procédé selon la revendication 1, caractérisé en ce qu'on associe au point d'arrêt pour l'aspirateur de saletés et/ou l'outil électrique raccordé (18) un courant volumétrique minimum auquel correspond une vitesse d'écoulement minimum (v) de 20 m/s mesurée dans la tubulure d'aspiration (4) de l'outil électrique raccordé ou dans le tuyau d'aspiration raccordé.
  3. Dispositif pour la mise en oeuvre du procédé selon la revendication 1 ou 2, caractérisé en ce qu'il est prévu, sur le côté frontal de l'aspirateur de saletés, un commutateur à l'aide duquel on peut prédéfinir différents courants volumétriques minimum en présence desquels l'aspirateur de saletés et/ou l'outil électrique sont arrêtés, et en ce qu'on associe aux positions du commutateur différentes sections transversales de tubulure d'aspiration et les courants volumétriques minimum qui en résultent.
  4. Dispositif selon la revendication 3, caractérisé en ce que le diamètre du tuyau d'aspiration est disposé sous la forme d'un codage électrique dans le manchon de raccordement (3) du tuyau d'aspiration, et en ce que ce codage électrique est enregistré par l'aspirateur de saletés dans la zone de l'orifice d'admission (32), lors du raccordement du tuyau d'aspiration, et le courant volumétrique minimum au-dessous duquel on ne doit pas descendre est apte à être prédéfini à l'aide du codage électrique.
  5. Dispositif selon la revendication 3 ou 4, caractérisé en ce que le courant volumétrique minimum associé à l'outil électrique est associé sous la forme d'un codage électrique dans une fiche multipolaire de raccordement au secteur de l'outil électrique, et en ce que dans une fiche multipolaire de raccordement au secteur, des broches de contact sont reliées d'une manière définie, à l'intérieur, par des ponts, de telle sorte que dans le système électronique d'évaluation, les points d'arrêt associés à l'outil électrique soient enregistrés automatiquement. La fiche multipolaire de raccordement au secteur sert en outre à transmettre la tension de secteur à l'outil électrique.
EP93104911A 1992-04-02 1993-03-25 Procédé de fonctionnement d'un aspirateur à interruption automatique et aspirateur pour la mise en oeuvre du procédé Expired - Lifetime EP0563788B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4210883 1992-04-02
DE4210883A DE4210883A1 (de) 1992-04-02 1992-04-02 Verfahren zum Betrieb eines Schmutzsaugers mit automatischer Abschaltung und Schmutzsauger zur Ausführung des Verfahrens

Publications (2)

Publication Number Publication Date
EP0563788A1 EP0563788A1 (fr) 1993-10-06
EP0563788B1 true EP0563788B1 (fr) 1996-09-18

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EP93104911A Expired - Lifetime EP0563788B1 (fr) 1992-04-02 1993-03-25 Procédé de fonctionnement d'un aspirateur à interruption automatique et aspirateur pour la mise en oeuvre du procédé

Country Status (4)

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EP (1) EP0563788B1 (fr)
AT (1) ATE142866T1 (fr)
DE (2) DE4210883A1 (fr)
DK (1) DK0563788T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027431A1 (fr) * 1994-04-11 1995-10-19 Goyen Controls Co. Pty. Ltd. Elements destines a des systemes de nettoyage a cartouches/filtres a sacs et procedes de fonctionnement de ces derniers
DE19830737C2 (de) * 1998-07-09 2002-03-07 Wap Reinigungssysteme Verfahren und Vorrichtung zur Steuerung eines Sauggerätes mit einer Turbine
FI130712B1 (fi) * 2021-11-23 2024-02-05 Mirka Ltd Pölynimuri

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2748174A1 (de) * 1977-10-27 1979-05-03 Schoettle Kg Electrostar Staubsauger mit ueberwachungseinrichtung fuer die filterdurchlaessigkeit
US4733431A (en) * 1986-12-09 1988-03-29 Whirlpool Corporation Vacuum cleaner with performance monitoring system
DE8704713U1 (de) * 1987-03-31 1987-08-13 Zubler Gerätebau GmbH, 7910 Neu-Ulm Industriesauger mit integriertem Umrichter zur Versorgung von Handwerkzeugen
DE8704714U1 (de) * 1987-03-31 1987-08-20 Zubler Gerätebau GmbH, 7910 Neu-Ulm Staubsauger mit Luftmengenregelung
JPH01285235A (ja) * 1988-05-13 1989-11-16 Tokyo Electric Co Ltd 電気掃除機

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Publication number Publication date
EP0563788A1 (fr) 1993-10-06
DE59303805D1 (de) 1996-10-24
DE4210883A1 (de) 1993-10-28
ATE142866T1 (de) 1996-10-15
DK0563788T3 (fr) 1997-03-10

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