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EP0564817A1 - Wet-dry cleaner with deduster and additional electric tool - Google Patents

Wet-dry cleaner with deduster and additional electric tool Download PDF

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Publication number
EP0564817A1
EP0564817A1 EP93103380A EP93103380A EP0564817A1 EP 0564817 A1 EP0564817 A1 EP 0564817A1 EP 93103380 A EP93103380 A EP 93103380A EP 93103380 A EP93103380 A EP 93103380A EP 0564817 A1 EP0564817 A1 EP 0564817A1
Authority
EP
European Patent Office
Prior art keywords
vacuum cleaner
cleaning
tool
switched
turbine
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
EP93103380A
Other languages
German (de)
French (fr)
Other versions
EP0564817B1 (en
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
Original Assignee
WAP Reinigungssysteme GmbH and Co
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 WAP Reinigungssysteme GmbH and Co filed Critical WAP Reinigungssysteme GmbH and Co
Publication of EP0564817A1 publication Critical patent/EP0564817A1/en
Application granted granted Critical
Publication of EP0564817B1 publication Critical patent/EP0564817B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A47L9/2889—Safety or protection devices or systems, e.g. for prevention of motor over-heating or for protection of the user
    • 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
    • A47L9/20—Means for cleaning filters
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a vacuum cleaner with a cleaning motor and with an optionally connected power tool with suction via the filter arrangement of the vacuum cleaner according to the preamble of claim 1.
  • a differential pressure cell is already provided, but its arrangement below the turbine does not work adequately, especially if too much moisture occurs in the filter elements, as a result of which the measuring element of the differential pressure cell easily fogs up in the flow area below the turbine could.
  • the object of the present application is to create an area of the invention in such a way that the disadvantages indicated above are avoided and that cleaning takes place taking into account the moisture values in the air stream.
  • differential pressure cans are either relatively expensive or it is not readily possible to carry out the readjustment precisely in the case of less expensive differential pressure cans. After such differential pressure cans work partly mechanically, it is very difficult to deal with moisture in a small pressure range from 1 to max. 5 mbar to ensure a reproducible setting of the differential pressure cell.
  • the advantage of the flow sensors is, moreover, that temperature compensation is integrated, i.e. the flow measurement works relatively independently of the ambient temperature.
  • a temperature compensation circuit is attached to the measuring element itself, in order to be able to carry out the measurements independently of the ambient temperature.
  • the object of the invention is achieved in that the filter contamination influencing the air volume flow is measured in connection with a flow sensor in the flow area below the turbine.
  • the flow sensor is arranged in an air duct below the turbine, the turbine, in a manner known per se, entraining the air flow in the region of the flow sensor via an inlet opening.
  • a humidity sensor 40 is provided, which measures the relative air humidity at the filter, and if the degree of humidity is too high, the cleaning is put out of operation.
  • Such a cut-off air humidity would be e.g. given a value between 90 and 100% relative humidity.
  • FIG. 1 a dirt vacuum cleaner according to the invention with a connected tool 1 is shown schematically in FIG.
  • This tool is arranged via a suction hose 2 at the connection opening 3 of the vacuum cleaner.
  • the vacuum cleaner carries a suction head 4, in which a turbine 5 is installed.
  • the turbine 5 is driven by an electric motor, not shown.
  • an insertion filter 7 is installed in the dirt container 6, which is designed, for example, as a dirt-receiving bag (filter bag).
  • a filter element 8 is arranged in the dirt container with an internal float 9 (see FIG. 2).
  • a control panel 10 is also arranged on the suction head 4, with which the various functions of the vacuum cleaner can be controlled.
  • FIG. 2 shows further details of the vacuum cleaner according to FIG. 1, where it can be seen that a float 9 is guided in a vertically adjustable manner in a support basket 11.
  • the support basket 11 of the filter element 8 is arranged in the filter element 8.
  • the filter element is held in a mounting plate 12 for the turbine.
  • the turbine 5 has outlet openings 13 and is embedded in upper and lower seals 14, the upper seal 14 being arranged in the area of a clamping plate 15, while the lower seal 14 is provided in the area of the receiving plate 12.
  • the receiving plate 12 has an upper opening 16 which lies on the clean air side of the filter element 8.
  • An air duct 17 is arranged below the opening 16, which essentially consists of a tube piece 18 which is reinforced by an annular flange 19.
  • An annular chamber 20 is hereby formed within the annular flange 19.
  • the opening 16 is closed by a wire mesh 21. It is now important that a flow sensor 22 projects radially through the wall of the pipe section 18 into the air duct 17 and is acted upon by the volume flow coming from below in the direction of the arrow 23.
  • the cable feed to the flow sensor 22 takes place through the annular chamber 20.
  • the clean air is thus guided via the sensor 22 in the direction of arrow 23, sucked into the underside of the turbine 5 and introduced through the outlet openings 13 via an annular chamber 24 in the direction of arrow 25 into a sound absorbing arrangement which is in the hood (suction head 4) according to FIG. 1 of the vacuum cleaner is arranged.
  • the curve is provided with the reference number 27.
  • an operating point 28 which corresponds for example to a volume flow of 80 cbm / h and an output voltage of approximately 3.7 V at the flow sensor 22.
  • the working point 28 moves downward in the direction of the arrow 29 until a minimal working point 30 is reached.
  • This minimum working point is specified by the trade association regulations and corresponds to a minimum volume flow of z. B. 26 cbm / h.
  • the volume flow value of 26 m3 / h results, for example, if a power tool with a suction nozzle cross section of approx. 360 mm2 at a z. At present the required minimum air speed of 20 m / s is operated.
  • the working point 31 corresponding to a suction hose diameter of 36 mm and a nominal voltage of 200 V
  • the working point 32 corresponds to a suction hose diameter of 36 mm at a nominal voltage of 230 V
  • the Working point 33 corresponds to a suction hose diameter of 36 mm and an overvoltage of 240 V.
  • a selector switch is now attached to the front of the device, with which certain volume flows can be set in several stages.
  • a volume flow of 70 cbm / h results for a suction hose of 32 mm diameter and a nominal voltage of 230 V on the drive motor of the turbine.
  • the threshold value with respect to the lower, minimally permitted working point 30 can now be set continuously.
  • only one unit is always considered, consisting of a dirt suction device 37, a suction hose 2 and an associated tool 1.
  • a minimally permitted amount of air (volume flow) is now prescribed by the manufacturer, which in turn is determined by the connection diameter of this tool to the suction hose 2.
  • a limit is reached when e.g. B. contain no more than 2 mg of dust per cubic meter of air.
  • This minimum permissible volume flow assigned to the power tool is now set at the selector switch 38 of the vacuum cleaner 37.
  • a warning signal is first generated, which can consist of an optical signal and / or an acoustic signal.
  • the infinitely variable setting is carried out by a potentiometer or, in the case of several stages, by a step switch with assigned fixed resistors on the switch panel, whereby a threshold value of a comparator is set, which compares the output voltage of the flow sensor with this set threshold value and generates an output signal when the setpoint value falls below the threshold value.
  • the upper operating points 31, 32, ... 35 can also be continuously adjusted, specifically by regulating the speed of the drive motor for the turbine. This has the advantage that you can first drive in the initial operation with throttled power, which means great energy savings, because the working point selected is z. B. 10% above the switch-off point 30 as a safety reserve.
  • the speed can be electronically and automatically linked to both the actual volume flow value and the setting value (setpoint), which results in a fully automatic suction power adjustment that is independent of the operator (see FIG. 4).
  • the speed of the turbine is increased continuously until the maximum permissible speed has been reached. If the set minimum operating point 30 is now reached with the suction motor controlled to a maximum, an acoustic and / or optical warning signal is emitted and after a certain delay the power tool is then switched off, provided this is approved by the professional association.
  • This automatic suction power adjustment is therefore a very energy-saving operation, which increases the service life of the turbine of the vacuum cleaner and results in a significant reduction in noise.
  • a further process claim would be the moisture measurement in the filter area in order to avoid inadmissible cleaning of a wet filter, which could be damaged thereby, and a third process claim would be a level measurement in the dirt container.

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

Abstract

A description is given of a wet-dry cleaner (37) with an electric tool (1) connected to it, vacuuming of the area to be cleaned being carried out by means of the wet-dry cleaner and there being provided at the same time an automatic mode of the wet-dry cleaner, in particular whenever excessive moistness occurs in the connection region of the electric tool. The object of the present invention is to provide a satisfactory dedusting mode of the wet-dry cleaner in combination with an electric tool connected to it and the vacuuming region of the latter. For this purpose, it is proposed that the soiling of the filter is measured by means of a flow sensor (22) and at the same time the flow sensor is arranged in an air duct underneath the turbine, an upwardly acting air stream being generated, which constantly surrounds the flow sensor and the filter material at the same time being measured for its degree of moistness by means of a moistness sensor (40), the degree of moistness being used as a control signal for switching the electromechanically operated dedusting. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Schmutzsauger mit Abreinigungsmotor und mit einem wahlweise angeschlossenen Elektrowerkzeug mit Absaugung über die Filteranordnung des Schmutzsaugers nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a vacuum cleaner with a cleaning motor and with an optionally connected power tool with suction via the filter arrangement of the vacuum cleaner according to the preamble of claim 1.

Bei einer bekannten Ausführung eines Schmutzsaugers ist bereits eine Differenzdruckdose vorgesehen, die jedoch in ihrer Anordnung unterhalb der Turbine nicht ausreichend arbeitet, insbesondere, wenn zu große Feuchtigkeit in den Filterelementen auftritt, wodurch sich das Meßelement der Differenzdruckdose im Strömungsbereich unterhalb der Turbine leicht mit Feuchtigkeit beschlagen könnte.In a known version of a vacuum cleaner, a differential pressure cell is already provided, but its arrangement below the turbine does not work adequately, especially if too much moisture occurs in the filter elements, as a result of which the measuring element of the differential pressure cell easily fogs up in the flow area below the turbine could.

Aufgabe der vorliegenden Anmeldung ist es, einen Erfindungsbereich so zu schaffen, daß die oben angegebenen Nachteile vermieden werden und daß eine Abreinigung bei Berücksichtigung der Feuchtigkeitswerte im Luftstrom erfolgt.The object of the present application is to create an area of the invention in such a way that the disadvantages indicated above are avoided and that cleaning takes place taking into account the moisture values in the air stream.

Nachteil der bisher bekannten Differenzdruckdosen ist, daß sie entweder relativ teuer sind oder bei kostengünstigeren Differenzdruckdosen ist es nicht ohne weiteres möglich, die Nachjustierung genau durchzuführen. Nachdem derartige Differenzdruckdosen zum Teil mechanisch arbeiten, ist es sehr schwierig, bei Feuchtigkeit in einem kleinen Druckbereich von 1 bis max. 5 mbar eine reproduzierbare Einstellung der Differenzdruckdose zu gewährleisten.The disadvantage of the previously known differential pressure cans is that they are either relatively expensive or it is not readily possible to carry out the readjustment precisely in the case of less expensive differential pressure cans. After such differential pressure cans work partly mechanically, it is very difficult to deal with moisture in a small pressure range from 1 to max. 5 mbar to ensure a reproducible setting of the differential pressure cell.

Hier setzen die Vorteile der Strömungsmesser ein, die leicht reproduzierbare Meßwerte ergeben. Der Vorteil der Flow-Sensoren ist im übrigen, daß eine Temperaturkompensation integriert ist, d.h. die Durchflußmessung arbeitet relativ unabhängig von der Umgebungstemperatur. Hierzu ist eine Temperaturkompensationsschaltung auf dem Meßelement selbst angebracht, um somit die Messungen unabhängig von der Umgebungstemperatur ausführen zu können.This is where the advantages of the flow meter come in, which result in easily reproducible measured values. The advantage of the flow sensors is, moreover, that temperature compensation is integrated, i.e. the flow measurement works relatively independently of the ambient temperature. For this purpose, a temperature compensation circuit is attached to the measuring element itself, in order to be able to carry out the measurements independently of the ambient temperature.

Die Aufgabe nach der Erfindung wird dadurch gelöst, daß die den Luftvolumenstrom beeinflussende Filterverschmutzung in Verbindung mit einem Strömungssensor im Strömungsbereich unterhalb der Turbine gemessen wird. Hierbei ist der Strömungssensor in einem Luftkanal unterhalb der Turbine angeordnet, wobei in ansich bekannter Weise die Turbine über eine Einlaßöffnungen den Luftstrom im Bereich des Strömungssensors mitreisst.
In Verbindung mit der Messung über einen Strömungssensor ist ein Abreinigungsmotor vorhanden und demzuufolge eine elektromechanische Abreinigung des Filters.The object of the invention is achieved in that the filter contamination influencing the air volume flow is measured in connection with a flow sensor in the flow area below the turbine. Here, the flow sensor is arranged in an air duct below the turbine, the turbine, in a manner known per se, entraining the air flow in the region of the flow sensor via an inlet opening.
In connection with the measurement via a flow sensor, there is a cleaning motor and consequently an electromechanical cleaning of the filter.

Wenn eine zu große Feuchtigkeit am Filter gemessen wird, besteht die Gefahr, daß der feuchte Filter durch die elektromechanische Abreinigung zerstört würde. Aus diesem Grunde ist ein Feuchtesensor 40 vorgesehen, der die relative Luftfeuchte am Filter mißt, und ist der Feuchtegrad zu hoch, dann wird die Abreinigung außer Betrieb genommen.If too much moisture is measured on the filter, there is a risk that the wet filter would be destroyed by the electromechanical cleaning. For this reason, a humidity sensor 40 is provided, which measures the relative air humidity at the filter, and if the degree of humidity is too high, the cleaning is put out of operation.

Eine derartige Abschaltluftfeuchte wäre z.B. bei einem Wert zwischen 90 und 100% relative Feuchte gegeben.Such a cut-off air humidity would be e.g. given a value between 90 and 100% relative humidity.

Es zeigen:

Figur 1
eine schematische Darstellung von Schmutzsauger mit angeschlossenem Elektrowerkzeug,
Figur 2
die Anordnung eines Flow-Sensors,
Figur 3
ein Volumenstrom-/ Ausgangsspannungs-Diagramm,
Figur 4
eine Regelkreis-Darstellung für automatische Saugleistungsanpassung.
Show it:
Figure 1
1 shows a schematic illustration of a vacuum cleaner with a connected power tool,
Figure 2
the arrangement of a flow sensor,
Figure 3
a volume flow / output voltage diagram,
Figure 4
a control loop representation for automatic suction power adjustment.

Bezüglich der Zeichnungen wird ausgeführt, daß in Figur 1 schematisiert ein Schmutzsauger nach der Erfindung mit einem angeschlossenen Werkzeug 1 dargestellt ist. Dieses Werkzeug ist über einen Saugschlauch 2 an der Anschlußöffnung 3 des Schmutzsaugers angeordnet. Der Schmutzsauger trägt einen Saugkopf 4, in dem eine Turbine 5 eingebaut ist. Die Turbine 5 ist über einen nicht näher dargestellten Elektromotor angetrieben. Im Schmutzbehälter 6 ist hierbei ein Einlegefilter 7 eingebaut, der beispielsweise als Schmutzaufnahmesack (Filtersack) ausgebildet ist. Ferner ist im Schmutzbehälter ein Filterelement 8 angeordnet mit einem innenliegenden Schwimmer 9 (vergleiche Figur 2).With regard to the drawings, it is stated that a dirt vacuum cleaner according to the invention with a connected tool 1 is shown schematically in FIG. This tool is arranged via a suction hose 2 at the connection opening 3 of the vacuum cleaner. The vacuum cleaner carries a suction head 4, in which a turbine 5 is installed. The turbine 5 is driven by an electric motor, not shown. In this case, an insertion filter 7 is installed in the dirt container 6, which is designed, for example, as a dirt-receiving bag (filter bag). Furthermore, a filter element 8 is arranged in the dirt container with an internal float 9 (see FIG. 2).

Am Saugkopf 4 ist ferner ein Bedientableau 10 angeordnet, mit dem die verschiedenen Funktionen des Schmutzsaugers gesteuert werden können.A control panel 10 is also arranged on the suction head 4, with which the various functions of the vacuum cleaner can be controlled.

Die Figur 2 zeigt weitere Einzelheiten des Schmutzsaugers nach Figur 1, wo erkennbar ist, daß ein Schwimmer 9 in einem Stützkorb 11 vertikal verstellbar geführt ist. Der Stützkorb 11 des Filterelements 8 ist im Filterelement 8 angeordnet.FIG. 2 shows further details of the vacuum cleaner according to FIG. 1, where it can be seen that a float 9 is guided in a vertically adjustable manner in a support basket 11. The support basket 11 of the filter element 8 is arranged in the filter element 8.

Das Filterelement ist hierbei in einer Aufnahmeplatte 12 für die Turbine gehalten.The filter element is held in a mounting plate 12 for the turbine.

Die Turbine 5 weist Auslaßöffnungen 13 auf und ist in oberen und unteren Abdichtungen 14 eingebettet, wobei die obere Abdichtung 14 im Bereich einer Spannplatte 15 angeordnet ist, während die untere Abdichtung 14 im Bereich der Aufnahmeplatte 12 vorgesehen ist.The turbine 5 has outlet openings 13 and is embedded in upper and lower seals 14, the upper seal 14 being arranged in the area of a clamping plate 15, while the lower seal 14 is provided in the area of the receiving plate 12.

Die Aufnahmeplatte 12 weist eine obere Öffnung 16 auf, die auf der Reinluftseite des Filterelementes 8 liegt.The receiving plate 12 has an upper opening 16 which lies on the clean air side of the filter element 8.

Unterhalb der Öffnung 16 ist hierbei ein Luftkanal 17 angeordnet, der im wesentlichen aus einem Rohrstück 18 besteht, welcher über einen Ringflansch 19 verstärkt ist. Innerhalb des Ringflansches 19 ist hierbei eine Ringkammer 20 ausgebildet.An air duct 17 is arranged below the opening 16, which essentially consists of a tube piece 18 which is reinforced by an annular flange 19. An annular chamber 20 is hereby formed within the annular flange 19.

Die Öffnung 16 ist von einem Drahtgitter 21 abgeschlossen. Wichtig ist nun, daß ein Strömungssensor 22 durch die Wandung des Rohrstückes 18 radial in den Luftkanal 17 hineinragt und hierbei von den von unten in Pfeilrichtung 23 kommenden Volumenstrom beaufschlagt wird.The opening 16 is closed by a wire mesh 21. It is now important that a flow sensor 22 projects radially through the wall of the pipe section 18 into the air duct 17 and is acted upon by the volume flow coming from below in the direction of the arrow 23.

Die Kabelzuführung zum Strömungssensor 22 erfolgt durch die Ringkammer 20 hindurch.The cable feed to the flow sensor 22 takes place through the annular chamber 20.

Die Reinluft wird also über den Sensor 22 in Pfeilrichtung 23 geführt, an der Unterseite der Turbine 5 angesaugt und durch die Auslaßöffnungen 13 über eine Ringkammer 24 in Pfeilrichtung 25 in eine Schallschluckanordnung eingeleitet, die in der Haube (Saugkopf 4) nach Figur 1 des Schmutzsaugers angeordnet ist.The clean air is thus guided via the sensor 22 in the direction of arrow 23, sucked into the underside of the turbine 5 and introduced through the outlet openings 13 via an annular chamber 24 in the direction of arrow 25 into a sound absorbing arrangement which is in the hood (suction head 4) according to FIG. 1 of the vacuum cleaner is arranged.

Die auf diese Weise schallgedämmte Luft wird über die Ausblasöffnungen 26 (Figur 1) herausgepreßt.The sound-insulated air in this way is pressed out through the blow-out openings 26 (FIG. 1).

In Figur 3 ist auf der Abzisse der Volumenstrom aufgezeichnet, während auf der Ordinate die Ausgangsspannung des Strömungssensors 22 aufgezeichnet ist.In Figure 3, the volume flow is recorded on the abscissa, while the output voltage of the flow sensor 22 is recorded on the ordinate.

Es handelt sich hierbei um eine nicht-lineare Kurve, wobei wichtig ist, daß sich bei kleineren Volumenströmen eine höhere Auflösung (Delta UA) ergibt.This is a non-linear curve, whereby it is important that a higher resolution (delta UA) results with smaller volume flows.

Die Kurve ist mit dem Bezugszeichen 27 versehen. Bei einem sauberen, unbenutzten Gerät, an dem ein unbenutztes Elektrowerkzeug angeschlossen wird, wird z. B. ein Arbeitspunkt 28 erreicht, dem beispielsweise ein Volumenstrom von 80 cbm/h und eine Ausgangsspannung von ca. 3,7 V am Strömungssensor 22 entspricht.The curve is provided with the reference number 27. With a clean, unused device to which an unused power tool is connected, e.g. B. reaches an operating point 28, which corresponds for example to a volume flow of 80 cbm / h and an output voltage of approximately 3.7 V at the flow sensor 22.

Mit zunehmender Beaufschlagung des Filters oder mit zunehmender Zusetzung des Elektrowerkzeuges wandert der Arbeitspunkt 28 in Pfeilrichtung 29 nach unten, bis ein minimaler Arbeitspunkt 30 erreicht ist. Dieser minimale Arbeitspunkt wird durch die Berufgenossenschafts-Vorschriften vorgegeben und entspricht einem noch zugelassenen minimalen Volumenstrom von z. B. 26 cbm/h.With increasing exposure to the filter or with increasing clogging of the power tool, the working point 28 moves downward in the direction of the arrow 29 until a minimal working point 30 is reached. This minimum working point is specified by the trade association regulations and corresponds to a minimum volume flow of z. B. 26 cbm / h.

Der Volumenstromwert von 26 m³/h ergibt sich beispielsweise, wenn ein Elektrowerkzeug mit einem Absaugstutzenquerschnitt von ca. 360 mm² bei einer z. Zt. geforderten Mindest-Luftgeschwindigkeit in demselben von 20 m/s, betrieben wird.The volume flow value of 26 m³ / h results, for example, if a power tool with a suction nozzle cross section of approx. 360 mm² at a z. At present the required minimum air speed of 20 m / s is operated.

Auf der Kurve 27 ergeben sich weitere Arbeitspunkte 31,32,33, wobei beispielsweise der Arbeitspunkt 31 einem Saugschlauchdurchmesser von 36 mm und einer Nennspannung von 200 V entspricht, während der Arbeitspunkt 32 einem Saugschlauchdurchmesser von 36 mm bei einer Nennspannung von 230 V entspricht und der Arbeitspunkt 33 einem Saugschlauchdurchmesser von 36 mm und einer Überspannung von 240 V entspricht.On the curve 27 there are further working points 31, 32, 33, for example the working point 31 corresponding to a suction hose diameter of 36 mm and a nominal voltage of 200 V, while the working point 32 corresponds to a suction hose diameter of 36 mm at a nominal voltage of 230 V and the Working point 33 corresponds to a suction hose diameter of 36 mm and an overvoltage of 240 V.

Es ergeben sich weitere Arbeitspunkte 34,35 auf der Kurve 27, wobei beispielsweise der Arbeitspunkt 34 einem Saugschlauchdurchmesser von 32 mm bei einer Nennspannung von 230 V entspricht und der Arbeitspunkt 35 einem Saugschlauchdurchmesser 27 mm bei ebenfalls einer Nennspannung von 230 V entspricht.There are further operating points 34, 35 on the curve 27, for example the working point 34 corresponding to a suction hose diameter of 32 mm at a nominal voltage of 230 V and the operating point 35 corresponding to a suction hose diameter 27 mm at a nominal voltage of 230 V.

Bei einem festgelegten und gegebenen Saugschlauchdurchmesser kommt es daher bei einer Änderung der Nennspannung im Antriebsmotor der Turbine nur zu einer Verschiebung in Pfeilrichtung 29 oder in Gegenrichtung hierzu auf der Kurve 27 für den betreffenden Arbeitspunkt.With a fixed and given suction hose diameter, there is therefore only a shift in the arrow direction 29 or in the opposite direction when the nominal voltage changes in the drive motor of the turbine for this purpose on curve 27 for the working point concerned.

An der Frontseite des Gerätes ist nun ein Wahlschalter angebracht, mit dem bestimmte Volumenströme in mehreren Stufen eingestellt werden können.A selector switch is now attached to the front of the device, with which certain volume flows can be set in several stages.

Im Arbeitspunkt 34 beispielsweise ergibt sich für einen Saugschlauch von 32 mm Durchmesser und einer Nennspannung von 230 V am Antriebsmotor der Turbine ein Volumenstrom von 70 cbm/h.
Diesem Arbeitspunkt entspricht ein Ausgangsspannungswert von z. B. 3,6 V am Strömungssensor.At operating point 34, for example, a volume flow of 70 cbm / h results for a suction hose of 32 mm diameter and a nominal voltage of 230 V on the drive motor of the turbine.
An output voltage value of z. B. 3.6 V on the flow sensor.

Mit dem Wahlschalter kann stufenlos nun der Schwellwert bezüglich des unteren minimal zugelassenen Arbeitspunktes 30 eingestellt werden.With the selector switch, the threshold value with respect to the lower, minimally permitted working point 30 can now be set continuously.

Gemäß Figur 1 wird also lediglich immer eine Einheit betrachtet, bestehend aus einem Schmutzsauger 37, einem Saugschlauch 2 und einem dazugehörenden Werkzeug 1.According to FIG. 1, only one unit is always considered, consisting of a dirt suction device 37, a suction hose 2 and an associated tool 1.

Für das verwendete Elektrowerkzeug 1 wird nun von der Herstellerseite her eine minimal zugelassene Luftmenge (Volumenstrom) vorgeschrieben, die wiederum vorgegeben wird durch den Anschlußdurchmesser dieses Werkzeuges am Saugschlauch 2.For the power tool 1 used, a minimally permitted amount of air (volume flow) is now prescribed by the manufacturer, which in turn is determined by the connection diameter of this tool to the suction hose 2.

Ein derartiger Grenzwert ist dann erreicht, wenn z. B. nicht mehr als 2 mg Staub pro cbm Luft enthalten sind. Dieser dem Elektrowerkzeug zugeordnete minimal zulässige Volumenstrom wird nun am Wahlschalter 38 des Schmutzsaugers 37 eingestellt. Bei Erreichen dieses Wertes wird zunächst ein Warnsignal erzeugt, welches aus einem optischen Signal und/oder einem akustischen Signal bestehen kann.Such a limit is reached when e.g. B. contain no more than 2 mg of dust per cubic meter of air. This minimum permissible volume flow assigned to the power tool is now set at the selector switch 38 of the vacuum cleaner 37. When this value is reached, a warning signal is first generated, which can consist of an optical signal and / or an acoustic signal.

Zusätzlich oder alternativ besteht auch die Möglichkeit bei Erreichen dieses minimalen Schwellwertes das Werkzeug und optional den Saugermotor abzuschalten.Additionally or alternatively, it is also possible to switch off the tool and optionally the vacuum motor when this minimum threshold value is reached.

Damit besteht der Vorteil, daß man mit allen herkömmlichen, am Markt befindlichen Elektrowerkzeugen, deren minimal zulässiger Volumenstrom bekannt ist, dieser Volumenstrom stufenlos oder in mehreren Stufen am Bedienungstableau des Schmutzsaugers 37 einstellen kann und hierdurch stets der minimale Arbeitspunkt 30 auf der Kurve 27 verschiebbar, eingehalten wird.This has the advantage that with all conventional power tools on the market, the minimum permissible volume flow of which is known, this volume flow can be adjusted continuously or in several stages on the control panel of the vacuum cleaner 37 and as a result the minimum operating point 30 can always be shifted on the curve 27, is observed.

Diese Arbeitspunkte sind in der Figur 3 mit den Punkten 30a,30b,30c usw. bezeichnet.These working points are designated in FIG. 3 with the points 30a, 30b, 30c etc.

Die stufenlose Einstellung erfolgt also durch einen Potentiometer oder bei mehreren Stufen durch einen Stufenschalter mit zugeordneten Festwiderständen am Schalttableau, wodurch ein Schwellwert eines Komparators eingestellt wird, welcher die Ausgangsspannung des Strömungssensors mit diesem eingestellten Schwellwert vergleicht und bei Unterschreitung des Schwellwert-Sollwertes ein Ausgangssignal erzeugt.The infinitely variable setting is carried out by a potentiometer or, in the case of several stages, by a step switch with assigned fixed resistors on the switch panel, whereby a threshold value of a comparator is set, which compares the output voltage of the flow sensor with this set threshold value and generates an output signal when the setpoint value falls below the threshold value.

In einer Weiterbildung der vorliegenden Erfindung ist es vorgesehen, daß auch die oberen Arbeitspunkte 31,32.... 35 stufenlos verstellt werden können, und zwar über eine Drehzahlregelung des Antriebsmotors für die Turbine. Damit besteht der Vorteil, daß man zunächst im Anfangsbetrieb mit gedrosselter Leistung fahren kann, was eine große Energieeinsparung bedeutet, denn der so gewählte Arbeitspunkt liegt z. B. 10 % über dem Abschaltpunkt 30 als Sicherheitsreserve.In a further development of the present invention, it is provided that the upper operating points 31, 32, ... 35 can also be continuously adjusted, specifically by regulating the speed of the drive motor for the turbine. This has the advantage that you can first drive in the initial operation with throttled power, which means great energy savings, because the working point selected is z. B. 10% above the switch-off point 30 as a safety reserve.

Setzen sich nun mit fortschreitendem Betrieb des Schmutzsaugers und des Elektrowerkzeuges diese Geräte voll und sinkt somit der Volumenstrom in die Nähe des unteren Arbeitspunktes 30, kann die Drehzahl der Turbine erhöht werden, bis wiederum die Sicherheitsreserve von 10 % über dem unteren Arbeitspunkt 30 erreicht wird.If these devices become full with the progressive operation of the vacuum cleaner and the power tool and the volume flow thus drops near the lower working point 30, the speed of the turbine can be increased until the safety reserve of 10% above the lower working point 30 is reached again.

Es wird also weiterhin mit relativ wenig Energie gearbeitet.
Das heißt, dem Betreiber steht eine manuell zu bedienende Saugleistungsanpassung zur Energiekostenreduzierung zur Verfügung.So you continue to work with relatively little energy.
This means that the operator has a manually operated one Suction power adjustment available to reduce energy costs.

In einer weiteren Ausstattungsvariante kann die Drehzahl elektronisch automatisch sowohl mit dem Ist-Volumenstromwert wie auch mit dem Einstellwert (Sollwert) verknüpft werden, wodurch sich eine vom Betreiber unabhängige, vollautomatische Saugleistungsanpassung ergibt (s. Figur 4).In a further equipment variant, the speed can be electronically and automatically linked to both the actual volume flow value and the setting value (setpoint), which results in a fully automatic suction power adjustment that is independent of the operator (see FIG. 4).

Mit zunehmender Verschmutzung des Schmutzsaugers und des Elektrowerkzeuges wird also stufenlos die Drehzahl der Turbine erhöht bis die maximal zulässige Drehzahl erreicht wurde. Wird nun bei maximal angesteuertem Saugermotor der eingestellte, minimale Arbeitspunkt 30 erreicht, wird ein akustisches und/oder optisches Warnsignal abgegeben und nach einer gewissen Verzögerungszeit erfolgt dann die Abschaltung des Elektrowerkzeuges, sofern dies von der Berufsgenossenschaft zugelassen ist.With increasing contamination of the vacuum cleaner and the power tool, the speed of the turbine is increased continuously until the maximum permissible speed has been reached. If the set minimum operating point 30 is now reached with the suction motor controlled to a maximum, an acoustic and / or optical warning signal is emitted and after a certain delay the power tool is then switched off, provided this is approved by the professional association.

Danach erfolgt nach einer weiteren Verzögerungszeit die Abschaltung des Schmutzsaugers selbst.After a further delay, the vacuum cleaner itself is switched off.

Bei dieser automatischen Saugleistungsanpassung handelt es sich also um einen sehr energiesparenden Betrieb, welcher die Standzeit von der Turbine des Schmutzsaugers erhöht und eine wesentliche Lärmreduktion zur Folge hat.This automatic suction power adjustment is therefore a very energy-saving operation, which increases the service life of the turbine of the vacuum cleaner and results in a significant reduction in noise.

Ein weiterer Verfahrensanspruch wäre die Feuchtigkeitsmessung im Filterbereich, um eine unzulässige Abreinigung eines feuchten Filters zu vermeiden, der damit beschädigt werden könnte und ein dritter Verfahrensanspruch wäre eine Füllstandsmessung im Schmutzbehälter.A further process claim would be the moisture measurement in the filter area in order to avoid inadmissible cleaning of a wet filter, which could be damaged thereby, and a third process claim would be a level measurement in the dirt container.

Die Verfahrensabläufe, die im Expose vom 22.10.1991 beschrieben werden, sind in Verfahrensansprüche zu fassen. Hierbei ist z. B. vorgesehen, daß mit der Schaltung des Saugers in Bereitschaftsstellung gleichzeitig eine Bereitschaftsstellung für die elektromechanische Abreinigung eingeschaltet wird, die durch Drücken einer eigenen, am Bedienungstableau angebrachten, Abreinigungstaste aktiviert wird und die Abreinigung dadurch abläuft.The procedures described in the Expose dated October 22, 1991 are to be summarized in claims. Here is z. B. provided that with the circuit of the vacuum cleaner in the standby position a standby position for electromechanical cleaning is switched on, which is activated by pressing a dedicated cleaning button on the control panel, and the cleaning process runs as a result.

Es gibt weitere Schalterstellungen, "manuell", und "auto", wobei in allen beiden Stellungen die Abreinigung aktiviert ist und durch Drücken der Abreinigungstaste anläuft und abläuft. ZEICHNUNGS-LEGENDE 1 Werkzeug 27 Kurve 2 Saugschlauch 28 Arbeitspunkt 3 Anschlußöffnung 29 Pfeilrichtung 4 Saugkopf 30 Arbeitspunkt 5 Turbine 31 " 6 Schmutzbehälter 32 " 7 Einlegefilter 33 " 8 Filterelement 34 " 9 Schwimmer 35 " 10 Bedientableau 36 11 Stützkorb 37 Schmutzsauger 12 Aufnahmeplatte 38 Hauptschalter 13 Auslaßöffnung 39 Abreinigungstaste 14 Abdichtung 40 Feuchtesensor 15 Spannplatte 41 Drehzahl-Regelknopf 16 Öffnung 17 Venturidüse 18 Rohstück 19 Ringflansch 20 Ringkammer 21 Drahtgitter 22 Strömungssensor 23 Pfeilrichtung 24 Ringkammer 25 Pfeilrichtung 26 Auslaßöffnung There are further switch positions, "manual" and "auto", whereby cleaning is activated in both positions and starts and runs by pressing the cleaning button. DRAWING LEGEND 1 tool 27 curve 2 suction hose 28 working point 3 connection opening 29 arrow direction 4 suction head 30 working point 5 turbine 31 " 6 dirt containers 32 " 7 insert filters 33 " 8 filter element 34 " 9 swimmers 35 " 10 control panel 36 11 support basket 37 vacuum cleaner 12 mounting plate 38 main switch 13 outlet opening 39 cleaning button 14 sealing 40 humidity sensor 15 clamping plate 41 Speed control knob 16 opening 17 Venturi nozzle 18 blank 19 ring flange 20 ring chamber 21 wire mesh 22 flow sensor 23 direction of arrow 24 ring chamber 25 direction of arrow 26 outlet opening

Claims (13)

Schmutzsauger mit Abreinigungsmotor und mit einem wahlweise angeschlossenen Elektrowerkzeug mit Absaugung über die Filteranordnung des Schmutzsaugers über einen Saugschlauch, wobei das Elektrowerkzeug eingeschaltet ist und automatisch abgeschaltet wird oder das Elektrowerkzeug weiterläuft und statt der Abschaltung ein akustisches und/oder optisches Signal erfolgt, sobald die Filterverschmutzung einen bestimmten Richtwert übersteigt, dadurch gekennzeichnet, daß die Filterverschmutzung über einen Flow-(Strömungs)Sensor (22) gemessen wird, wobei der Strömungssensor (22) in Verbindung mit Thermoelementen und einer integrierten Heizwendel in einem Luftkanal unterhalb der Turbine (5) angeordnet ist und hierbei die Turbine (5) die Saugluft durch die Filteranordnung und den Luftkanal unterhalb der Turbine ansaugt, wobei die Turbine Auslaßöffnungen (13) für den Luftaustritt aufweist, aus denen die Saugluft ausströmt, in der koaxial angeordneten Ringkammer (24) gesammelt wird und über zwei Austrittsöffnungen aus dem Staubsauger austritt, wobei der Hauptschalter (38) des Staubsaugers in Stellung "MAN" oder "AUTO" geschaltet ist.Vacuum cleaner with cleaning motor and with an optionally connected power tool with suction via the filter arrangement of the vacuum cleaner via a suction hose, whereby the power tool is switched on and automatically switched off or the power tool continues to run and instead of the shutdown an acoustic and / or visual signal occurs as soon as the filter becomes dirty exceeds a certain guide value, characterized in that the filter contamination is measured via a flow (flow) sensor (22), the flow sensor (22) being arranged in connection with thermocouples and an integrated heating coil in an air duct below the turbine (5) and Here, the turbine (5) sucks the suction air through the filter arrangement and the air duct below the turbine, the turbine having outlet openings (13) for the air outlet, from which the suction air flows out, is collected in the coaxially arranged annular chamber (24) and over he exits the vacuum cleaner through two outlet openings, the main switch (38) of the vacuum cleaner being set to the "MAN" or "AUTO" position. Schmutzsauger nach Anspruch 1, dadurch gekennzeichnet, daß bei Stellung ''MAN und "AUTO" in Verbindung mit einer Taste "Abreinigung" eine kleine grüne LED aufleuchtet und gleichzeitig der Abreinigungszuklus abläuft.Vacuum cleaner according to claim 1, characterized in that in the '' MAN and "AUTO" position, in conjunction with a "cleaning" button, a small green LED lights up and the cleaning cycle runs simultaneously. Schmutzsauger nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß ausgehend vom Aufleuchten der grünen LED der Saugermotor abgeschaltet wird, und eine Zeit von 4 - 5 Sekunden verstreicht, ehe ein Abreinigungsmotor anläuft, wobei der Abreinigungsmotor bei zu hohem Stromfluß, verursacht durch zu schwergängige Drehung der Abreinigungsmechanik oder gar Blockierung derselben, durch eine elektronische Stromüberwachung gestoppt wird, wobei gleichzeitig die grüne LED auf Rot umwechselt.Vacuum cleaner according to claims 1 and 2, characterized in that, starting from the lighting up of the green LED, the vacuum motor is switched off, and a time of 4-5 seconds elapses before a cleaning motor starts, the cleaning motor when the current flow is too high, caused by too stiff Rotation of the cleaning mechanism or even blocking it, is stopped by an electronic current monitoring, while the green LED changes to red. Schmutzsauger nach Anspruch 1 und Anspruch 3, dadurch gekennzeichnet,daß beim Zurückschalten von Stellung "MAN" des Hauptschalters nach Stellung "Stop" der Abreinigungszyklus beginnt anzulaufen.Vacuum cleaner according to claim 1 and claim 3, characterized in that when the main switch is switched back from the "MAN" position to the "Stop" position, the cleaning cycle begins. Schmutzsauger nach Anspruch 1, dadurch gekennzeichnet, daß in der Stellung "Auto" die Einschaltautomatik mit Werkzeugverriegelung (alternativ auch ohne) in Betrieb ist, wobei - sobald ein Elektrowerkzeug (z.B. Schwingschleifer) eingeschaltet ist und der Hauptschalter (38) von Stellung "Null" nach "Auto" bewegt wird, das Werkzeug sehr kurz (max. 10 msec.) anläuft und dann wieder stehen bleibt, danach blinkt eine große, rote LED (Werkzeugverriegelung), wobei die Verriegelung aufgehoben wird, wenn das Werkzeug ausgeschaltet und der Hauptschalter in Stellung "Null" gebracht wird.Vacuum cleaner according to claim 1, characterized in that in the "Auto" position the automatic switch-on with tool locking (alternatively also without) is in operation, whereby - as soon as an electric tool (eg orbital sander) is switched on and the main switch (38) is in the "zero" position after "Auto" is moved, the tool starts very briefly (max. 10 msec.) and then stops again, then a large, red LED (tool lock) flashes, the lock being released when the tool is switched off and the main switch is in Position "zero" is brought. Schmutzsauger nach Anspruch 1, dadurch gekennzeichnet, daß ein Feuchte-Sensor vorgesehen ist, der bei einer zu hohen Luftfeuchte, verursacht durch eine zu hohe Feuchtigkeitsbeladung des Hauptfilters, die Abreinigung mit dem Abreinigungsmotor ausschaltet, wobei beim Abschalten der Abreinigung am Anzeigefeld bzw. Bedientableau (10) die gleiche kleine, rote LED - wie bei überstrom in Verbindung mit einer überlast der Mechanik der Abreinigungsvorrichtung aufleuchtet.Vacuum cleaner according to claim 1, characterized in that a moisture sensor is provided which, when the air humidity is too high, caused by an excessive moisture load on the main filter, switches off the cleaning with the cleaning motor, when the cleaning is switched off on the display panel or control panel ( 10) the same small, red LED - lights up when there is an overcurrent in connection with an overload of the cleaning device mechanics. Schmutzsauger nach Anspruch 1, dadurch gekennzeichnet, daß in Stellung "MAN" des Hauptschalters der Schmutzsauger sofort im Normal betrieb anläuft und daß bei Betätigung der Abreinigungstaste (39) der Motor bzw. die Turbine (5) des Schmutzsaugers gestoppt wird, wobei die sogenannte Abreinigung anläuft und die Turbine des Schmutzsaugers nach Beendigung der Abreinigung wieder eingeschaltet wird.Vacuum cleaner according to claim 1, characterized in that in the "MAN" position of the main switch, the vacuum cleaner starts operating normally and that when the cleaning button (39) is actuated, the motor or turbine (5) of the vacuum cleaner is stopped, the so-called cleaning starts up and the turbine of the vacuum cleaner is switched on again after cleaning is complete. Schmutzsauger nach Anspruch 1 , dadurch gekennzeichnet, daß bei der Betätigung des Hauptschalters von "Null" nach "AUTO" die Werkzeugverriegelung (Blinken einer großen, roten LED) in Betrieb ist, wobei für einen automatischen Betrieb das Werkzeug in Ausschaltstellung zu bringen ist und der Hauptschalter (38) von Stellung "AUTO" in Stellung "NULL" und wieder zurück zu Stellung "AUTO" geschaltet werden muß.Vacuum cleaner according to claim 1, characterized in that when the main switch is actuated from "zero" to "AUTO", the tool lock (flashing a large, red LED) is in operation, the tool having to be brought into the switched-off position for automatic operation and the Main switch (38) must be switched from the "AUTO" position to the "ZERO" position and back to the "AUTO" position. Schmutzsauger nach Anspruch 1 und Anspruch 5 sowie Anspruch 7, dadurch gekennzeichnet, daß bei einer Stellung des Hauptschalters von "Null" nach ''Auto'' das Werkzeug in Betriebnahme geschaltet ist, wobei nach dem Start des Werkzeuges der Saugermotor verzögert zu laufen beginnt, wobei durch eine zeitliche Verschiebung der beiden Anlaufströme gewährleistet wird, daß die netzseitige Stromabsicherung selbst bei großer Belastung nicht auslösen kann und hierbei eine Staubabsaugung des erzeugten Staubes gewährleistet wird.Vacuum cleaner according to claim 1 and claim 5 as well as claim 7, characterized in that when the main switch is in the "zero" to "auto" position, the tool is switched on, the vacuum motor starting to run after the tool starts, with a delay, whereby a time shift of the two starting currents ensures that the grid-side current protection cannot trigger even under high loads and that dust extraction of the generated dust is ensured. Schmutzsauger nach Anspruch 8, dadurch gekennzeichnet, daß der Saugermotor des Schmutzsaugers nach Beendigung der Einschaltdauer des Elektrowerkzeuges und nach der dortigen Schmutzabsaugung noch kurze Zeit nachläuft, wodurch der Saugschlauch (2) einer Reinigung unterworfen wird und hierbei der Schmutzsauger nach kurzer Zeit selbständig abschaltet.Vacuum cleaner according to claim 8, characterized in that the vacuum motor of the vacuum cleaner continues to run for a short time after the end of the operating time of the power tool and after the vacuum extraction there, whereby the suction hose (2) is subjected to cleaning and the vacuum cleaner switches off automatically after a short time. Schmutzsauger nach Anspruch 8, dadurch gekennzeichnet,daß bei einer Betätigung der Abreinigung während der Arbeit mit dem Werkzeug (1) über die Abreinigungstaste (39) zunächst die Werkzeugverriegelung mit Abschaltung des Werkzeuges (1) in Kraft tritt, wodurch das Werkzeug (1) freigeschaltet wird und ebenfalls der Saugermotor des Schmutzsaugers zeitverzögert abschaltet.Vacuum cleaner according to claim 8, characterized in that when the cleaning is actuated while working with the tool (1) via the cleaning button (39), the tool locking initially comes into force when the tool (1) is switched off, as a result of which the tool (1) is released and the vacuum motor of the vacuum cleaner switches off with a time delay. Schmutzsauger nach einem der Ansprüche 1 - 11, dadurch gekennzeichnet,daß die Saugleistung der Turbine automatisch angepasst ist an einen einstellbaren Mindest-Volumenstromwert (Sollwert), so daß der Luftstrom der Turbine um einen Betrag von z.B. 10° über dem Mindestvolumenstrom liegt.Vacuum cleaner according to one of claims 1-11, characterized in that the suction power of the The turbine is automatically adjusted to an adjustable minimum volume flow value (setpoint) so that the air flow of the turbine is above the minimum volume flow by an amount of, for example, 10 °. Schmutzsauger nach Anspruch 12, dadurch gekennzeichnet, daß nach Erreichung der maximal zulässigen Lastdrehzahl der Turbine und nach Unterschreitung des Mindest-Volumenstromwertes ein Warnsignal erzeugt wird.Vacuum cleaner according to claim 12, characterized in that a warning signal is generated after reaching the maximum permissible load speed of the turbine and after falling below the minimum volume flow value.
EP93103380A 1992-03-27 1993-03-04 Wet-dry cleaner with deduster and additional electric tool Expired - Lifetime EP0564817B1 (en)

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EP1157652A1 (en) * 2000-05-23 2001-11-28 POLTI S.p.A. Machine for cleaning
EP1410750A3 (en) * 2002-10-15 2007-10-31 Matsushita Electric Industrial Co., Ltd. Vacuum cleaner
US7309365B2 (en) 2002-10-15 2007-12-18 Matsushita Electric Industrial Co., Ltd. Vacuum cleaner
EP1419723A3 (en) * 2002-11-12 2004-06-16 Black & Decker Inc. AC/DC hand portable wet/dry vacuum having improved portability and convenience
US7653963B2 (en) 2002-11-12 2010-02-02 Black & Decker Inc. AC/DC hand portable wet/dry vacuum having improved portability and convenience
US8365350B2 (en) 2002-11-12 2013-02-05 Black & Decker Inc. AC/DC hand portable wet/dry vacuum having improved portability and convenience
US7287301B2 (en) 2003-07-10 2007-10-30 Black & Decker Inc. Utility vacuum
US7712182B2 (en) 2003-07-25 2010-05-11 Milwaukee Electric Tool Corporation Air flow-producing device, such as a vacuum cleaner or a blower
WO2023094725A1 (en) * 2021-11-23 2023-06-01 Mirka Ltd Dust exctractor

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ATE156683T1 (en) 1997-08-15
EP0564817B1 (en) 1997-08-13
DE59307103D1 (en) 1997-09-18

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