EP1764020B1 - Suction device - Google Patents

Suction device Download PDF

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Publication number
EP1764020B1
EP1764020B1 EP06015219A EP06015219A EP1764020B1 EP 1764020 B1 EP1764020 B1 EP 1764020B1 EP 06015219 A EP06015219 A EP 06015219A EP 06015219 A EP06015219 A EP 06015219A EP 1764020 B1 EP1764020 B1 EP 1764020B1
Authority
EP
European Patent Office
Prior art keywords
suction
suction device
unit
mains
battery
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.)
Not-in-force
Application number
EP06015219A
Other languages
German (de)
French (fr)
Other versions
EP1764020A1 (en
Inventor
Gottfried Benzler
Maic Hensel
Helmut Meiser
Ulrich Rauleder
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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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Publication date
Application filed by Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP1764020A1 publication Critical patent/EP1764020A1/en
Application granted granted Critical
Publication of EP1764020B1 publication Critical patent/EP1764020B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0405—Driving means for the brushes or agitators
    • A47L9/0411—Driving means for the brushes or agitators driven by electric motor
    • 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
    • A47L9/2836—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
    • A47L9/2836—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
    • A47L9/2847—Surface treating elements
    • 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
    • A47L9/2868—Arrangements for power supply of vacuum cleaners or the accessories thereof
    • A47L9/2878—Dual-powered vacuum cleaners, i.e. devices which can be operated with mains power supply or by batteries
    • 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
    • A47L9/2868—Arrangements for power supply of vacuum cleaners or the accessories thereof
    • A47L9/2884—Details of arrangements of batteries or their installation

Definitions

  • the invention relates to a suction device with the features of the preamble of claim 1
  • suction devices are used in particular for floor cleaning.
  • the dirt collecting container can be acted upon by the suction unit with negative pressure, so that starting from the suction brush dirt can be transferred via the suction line in the dirt collecting.
  • the brush roller of the suction brush can additionally be rotated.
  • the suction brush comprises a drive motor coupled to the brush roller.
  • the power supply of the suction device can be done by means of the rechargeable battery to operate the suction device regardless of the accessibility of a mains voltage can.
  • the rechargeable battery is replaceably held in a battery compartment of the suction device.
  • the battery gradually discharges, so it must be recharged after a certain discharge time by means of a charger.
  • WO 2004/032696 A2 is a suction device of the aforementioned type, in which by means of a control device, a total electrical power can be specified, which can be distributed to the suction unit and the drive of the brush roller to achieve the longest possible discharge time of the battery.
  • Object of the present invention is to develop a suction device of the type mentioned in such a way that the discharge of the battery can be extended.
  • the invention includes the idea that the discharge time of the battery can be extended, that is, the time interval can be extended within which the battery discharges when operating the suction device, by the electric power of the suction unit is reduced when the brush roller is turned on.
  • the dirt receptacle is supported by the rotating brush roller, it can therefore be achieved despite reduced electrical power of the suction unit reliable floor cleaning when the brush roller rotates. If the brush roller is turned off, the suction unit is operated at its rated power, the brush roller is set in motion, the electric power of the suction unit is lowered automatically.
  • the suction device has a mains connection for connecting the suction device to a mains voltage, the suction unit optionally being connectable to the rechargeable battery and to the mains connection.
  • a mains connection for connecting the suction device to a mains voltage
  • the suction unit optionally being connectable to the rechargeable battery and to the mains connection.
  • Such a configuration makes it possible to connect the suction device, for example by means of a connecting cable to a mains voltage, in which case the power supply the suction unit is done by means of the mains voltage and not by means of the rechargeable battery.
  • the power supply can be done by means of at least one rechargeable battery.
  • the suction device has a switching unit which connects the suction unit to the mains connection in dependence on the presence of a mains voltage at the mains connection.
  • the switching unit may, for example, comprise a relay which, depending on the presence of a mains voltage at the mains connection, establishes an electrical connection between the suction unit and optionally the rechargeable battery and the mains connection.
  • the suction device may have a control unit, in particular a microcontroller.
  • the electrical power of the suction unit is according to the invention only during battery operation of the suction device is lowered. If the suction device is connected to a mains voltage, the electric power of the suction unit is not lowered when switching on the drive motor of the brush roller, since sufficient power is made available via the mains connection can. The electric power of the suction unit is lowered only in response to the operating condition of the brush roller when the power supply of the suction device by means of the rechargeable battery, because this makes it possible to extend the discharge of the battery.
  • the electrical power of the suction unit can be lowered by the nominal electrical power of the drive motor of the brush roller.
  • the total electric power to be supplied by the battery remains approximately the same regardless of the operating condition of the brush roller. If the drive motor of the brush roller is turned off, the suction unit is operated at its rated electrical power. If the drive motor of the brush roller is turned on, the electric power of the suction unit is reduced by the amount of the rated electric power of the drive motor of the brush roller, so that the overall performance of suction and drive motor of the brush roller remains approximately the same.
  • the electrical power of the suction unit can be lowered by at least 20%, preferably the electrical power can be lowered by 20 to 35%.
  • a manually operable switching member may be provided which can be actuated by the user. The user can then choose by means of the switching device between a battery operation and a network operation of the suction device.
  • the energy supply of the suction unit is done either by means of the rechargeable battery and the mains voltage.
  • the drive motor of the brush roller can be connected to the battery independently of the presence of a mains voltage at the mains connection.
  • the power supply of the drive motor of the brush roller is carried out in such an embodiment only by means of the battery, but not alternatively via the mains connection. This allows a simplification of the control device of the suction device.
  • the lowering of the electrical power of the suction unit in battery operation of the suction device can be effected in that the suction device has a switched between the battery and the suction unit controllable voltage converter and a control unit which controls the voltage converter in response to the presence of a mains voltage at the mains connection.
  • a voltage converter for example, a DC / DC converter can be used, which is on the input side with the rechargeable battery and the output side with the suction unit in electrical connection. It is advantageous if, with the aid of the DC / DC converter, a battery voltage of, for example, 24 volts can be converted to an output voltage of, for example, 100 volts.
  • the DC / DC converter has a control input, which is connected via at least one control line to the output of a control unit which controls the DC / DC converter in response to the presence of a mains voltage at the mains connection.
  • the suction device has a mains voltage detection unit, which the control unit in dependence from the presence of a mains voltage at the mains connection provides a control signal. If a mains voltage is connected to the mains connection, then this is detected by the mains voltage detection unit, which then provides the control unit with an electrical control signal which signals the presence of a mains voltage. The control of the electrical power of the suction unit is then carried out regardless of whether the brush roller is on or off. If, however, provided by the mains voltage detection unit, a control signal indicating the absence of a mains voltage at the mains connection, the electrical power of the suction unit is lowered when the drive motor of the brush roller is set in motion to extend the discharge time of the battery.
  • the suction device has an operating state detection unit which provides the control unit with a control signal as a function of the operating state of the drive motor of the brush roller.
  • the operating state detection unit By means of the operating state detection unit, the operating state of the drive motor of the brush roller can be monitored. If the drive motor is set in motion, for example, by means of a manually operable switching element, this is detected by the operating state detection unit, which then provides the control unit with a control signal corresponding to the operating state of the drive motor of the brush roller. In response to this control signal, the electric power of the suction unit can then be lowered during battery operation of the suction device.
  • the mains voltage detection unit can be designed, for example, in the form of an AC / DC converter, with the aid of which an AC voltage applied to the mains connection is converted into a DC voltage can, which can be provided via a control line of a control unit of the suction device.
  • FIG. 1 schematically, a suction device according to the invention in the form of a vacuum cleaner 10 is shown with a housing 11 which comprises a designed as a dirt collecting container 13 housing base and an attachable to the dirt collecting container 13 housing upper part 15.
  • the upper housing part 15 takes in the usual way a suction unit 17 with a suction turbine 18 and a drive motor 19.
  • the suction unit 17 dips into the top of the dirt collecting 13, which can be sucked by means of the suction unit 17 as usual.
  • the dirt collecting container 13 has a suction inlet 21, to which a suction line 23 is connected.
  • a suction brush 25 is arranged with a floor nozzle 26, in which a brush roller 28 is rotatably mounted.
  • the brush roller 28 is above usual and therefore in the drawing not shown gear means with a drive motor 29 in conjunction, which is arranged in the floor nozzle 26.
  • the power supply of the vacuum cleaner 10 is optionally carried out by means of a rechargeable battery 31, which is held interchangeably in a battery compartment 32 of the housing upper part 15, and by means of a mains connection 34 which is connected via a connecting cable 35 to the housing 11. Both the battery 31 and the connection cable 35 are connected to a control device 37 arranged in the upper housing part 15, which in turn is in electrical connection with the suction unit 17 and the drive motor 29 of the brush roller 28.
  • a user-operable main switch 39 is arranged on the upper housing part 15, by means of which the suction unit 17 can be switched on and off.
  • an electromechanical switch 43 is arranged for switching on and off of the drive motor 29 of the brush roller 28th
  • the control device 37 is in FIG. 2 shown schematically. It is connected on the one hand to the battery 31 and the power connection 34 and on the other hand to the suction unit 17 and the drive motor 29 of the brush roller 28.
  • the control device 37 comprises a voltage converter in the form of a DC / DC converter 45 which is connected on the input side to the battery 31 and on the output side to a switching unit in the form of a relay 47, to which the suction unit 17 is connected.
  • the control device 37 also has a central control unit in the form of a microcontroller 51, which is connected via control lines 53 and 54 to the controllable DC / DC converter 45, which activates the relay 47 and is connected to the current monitoring element 49 via a first connection line 56 , Via further connecting lines 58, 59, a mains voltage recognition unit in the form of an AC / DC converter 61 is connected to the microcontroller 51 and is connected to the mains connection 34 on the input side.
  • a central control unit in the form of a microcontroller 51, which is connected via control lines 53 and 54 to the controllable DC / DC converter 45, which activates the relay 47 and is connected to the current monitoring element 49 via a first connection line 56 , Via further connecting lines 58, 59, a mains voltage recognition unit in the form of an AC / DC converter 61 is connected to the microcontroller 51 and is connected to the mains connection 34 on the input side.
  • the drive motor 29 of the brush roller 28 is powered by the battery 31 regardless of whether the power supply 34 is connected to a mains voltage or not.
  • the energy supply of the suction unit 17 is optionally via the mains connection 34 or from the battery 31. If mains voltage is applied to the mains connection 34, a supply voltage is provided to the microcontroller 51 with the aid of the AC / DC converter 61 via the connecting lines 58 and 59 which simultaneously serves as a control signal, and the microcontroller 51 controls the relay 47 in such a way that it ensures an electrical connection between the mains connection 34 and the suction unit 17.
  • the relay 47 is controlled by the microcontroller 51, whose power supply then takes place via the battery 31, in such a way that the suction unit 17 is connected to the battery 31 via the DC / DC converter 45.
  • the provided by the battery 31 input voltage in the amount of 24 volts is converted by the DC / DC converter in an output voltage of 100 volts, which is provided to the suction unit 17 during battery operation of the vacuum cleaner 10.
  • the control of the DC / DC converter 45 by means of the microcontroller 51.
  • the current monitoring element 49 then provides the microcontroller 51 with a control signal on the basis of which the microcontroller 51 causes the DC / DC converter 45 to lower the electrical power which is supplied to the suction unit 17.
  • This power reduction takes place only during battery operation of the vacuum cleaner 10, but not when mains voltage is applied to the mains connection 34 and the power supply of the suction unit 17 via the mains connection 34 takes place. In mains operation, the suction unit 17 is rather operated independently of the operating state of the drive motor 29 with its rated electrical power.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Branching, Merging, And Special Transfer Between Conveyors (AREA)
  • Massaging Devices (AREA)
  • Manipulator (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Abstract

The electrical power of a vacuum unit (17) can be reduced depending on the operating state of the roller brush (28). The power may be reduced by the electrical power rating of the drive motor (29) of the roller brush. The power reduction may be at least 20 per cent. The vacuum cleaner may have a mains connection (34), and be selectively operated by the mains connection or the rechargeable battery (31).

Description

Die Erfindung betrifft ein Sauggerät mit den Merkmalen des Oberbegriffes von Patentanspruch 1The invention relates to a suction device with the features of the preamble of claim 1

Derartige Sauggeräte kommen insbesondere zur Bodenreinigung zum Einsatz. Der Schmutzsammelbehälter kann vom Saugaggregat mit Unterdruck beaufschlagt werden, so dass ausgehend von der Saugbürste Schmutz über die Saugleitung in den Schmutzsammelbehälter überführt werden kann. Zur Reinigung insbesondere von Teppichböden kann zusätzlich die Bürstenwalze der Saugbürste in Drehung versetzt werden. Die Saugbürste umfasst hierzu einen mit der Bürstenwalze gekoppelten Antriebsmotor.Such suction devices are used in particular for floor cleaning. The dirt collecting container can be acted upon by the suction unit with negative pressure, so that starting from the suction brush dirt can be transferred via the suction line in the dirt collecting. For cleaning in particular of carpets, the brush roller of the suction brush can additionally be rotated. For this purpose, the suction brush comprises a drive motor coupled to the brush roller.

Die Energieversorgung des Sauggerätes kann mittels der wiederaufladbaren Batterie erfolgen, um das Sauggerät unabhängig von der Zugänglichkeit einer Netzspannung betreiben zu können. Vorzugsweise ist die wiederaufladbare Batterie austauschbar in einem Batteriefach des Sauggerätes gehalten. Während des batteriebetriebenen Einsatzes des Sauggerätes entlädt sich die Batterie allmählich, sie muss deshalb nach einer gewissen Entladezeit mittels eines Ladegerätes wieder aufgeladen werden.The power supply of the suction device can be done by means of the rechargeable battery to operate the suction device regardless of the accessibility of a mains voltage can. Preferably, the rechargeable battery is replaceably held in a battery compartment of the suction device. During the battery-powered use of the suction device, the battery gradually discharges, so it must be recharged after a certain discharge time by means of a charger.

Aus der Offenlegungsschrift WO 2004/032696 A2 ist ein Sauggerät der eingangs genannten Art bekannt, bei dem mittels einer Steuereinrichtung eine elektrische Gesamtleistung vorgegeben werden kann, die auf das Saugaggregat und den Antrieb der Bürstenwalze verteilt werden kann, um eine möglichst lange Entladezeit der Batterie zu erzielen.From the publication WO 2004/032696 A2 is a suction device of the aforementioned type, in which by means of a control device, a total electrical power can be specified, which can be distributed to the suction unit and the drive of the brush roller to achieve the longest possible discharge time of the battery.

Aus den Patentschriften US-A-4,835,409 und US-A-6,448,732 sind Saugaggregate bekannt, die wahlweise von einer mitgeführten Batterie oder von einem Netzanschluss mit Energie versorgt werden können.From the Patents US-A-4,835,409 and US-A-6,448,732 suction units are known, which can be supplied with power either by a battery or by a power supply.

Aufgabe der vorliegenden Erfindung ist es, ein Sauggerät der eingangs genannten Art derart weiterzubilden, dass die Entladezeit der Batterie verlängert werden kann.Object of the present invention is to develop a suction device of the type mentioned in such a way that the discharge of the battery can be extended.

Diese Aufgabe wird durch ein Sauggerät mit den Merkmalen von Patentanspruch 1 gelöst.This object is achieved by a suction device with the features of claim 1.

In die Erfindung fließt der Gedanke mit ein, dass die Entladezeit der Batterie verlängert werden kann, das heißt es kann das Zeitintervall verlängert werden, innerhalb dessen sich die Batterie bei Betreiben des Sauggerätes entlädt, indem die elektrische Leistung des Saugaggregates verringert wird, wenn die Bürstenwalze eingeschaltet ist. Die Schmutzaufnahme wird durch die sich drehende Bürstenwalze unterstützt, es kann deshalb trotz verringerter elektrischer Leistung des Saugaggregates eine zuverlässige Bodenreinigung erzielt werden, wenn sich die Bürstenwalze dreht. Ist die Bürstenwalze ausgeschaltet, so wird das Saugaggregat mit seiner Nennleistung betrieben, wird die Bürstenwalze in Gang gesetzt, so wird die elektrische Leistung des Saugaggregates selbsttätig abgesenkt.The invention includes the idea that the discharge time of the battery can be extended, that is, the time interval can be extended within which the battery discharges when operating the suction device, by the electric power of the suction unit is reduced when the brush roller is turned on. The dirt receptacle is supported by the rotating brush roller, it can therefore be achieved despite reduced electrical power of the suction unit reliable floor cleaning when the brush roller rotates. If the brush roller is turned off, the suction unit is operated at its rated power, the brush roller is set in motion, the electric power of the suction unit is lowered automatically.

Das Sauggerät weist einen Netzanschluss auf zum Verbinden des Sauggerätes mit einer Netzspannung, wobei das Saugaggregat wahlweise mit der wiederaufladbaren Batterie und mit dem Netzanschluss verbindbar ist. Eine derartige Ausgestaltung ermöglicht es, das Sauggerät beispielsweise mittels eines Anschlusskabels an eine Netzspannung anzuschließen, wobei dann die Energieversorgung des Saugaggregates mittels der Netzspannung erfolgt und nicht mittels der wiederaufladbaren Batterie. Um das Sauggerät jedoch auch betreiben zu können, wenn keine Netzspannung zur Verfügung steht, kann die Energieversorgung mittels der mindestens einen wiederaufladbaren Batterie erfolgen.The suction device has a mains connection for connecting the suction device to a mains voltage, the suction unit optionally being connectable to the rechargeable battery and to the mains connection. Such a configuration makes it possible to connect the suction device, for example by means of a connecting cable to a mains voltage, in which case the power supply the suction unit is done by means of the mains voltage and not by means of the rechargeable battery. However, in order to operate the suction device when no mains voltage is available, the power supply can be done by means of at least one rechargeable battery.

Erfindungsgemäß weist das Sauggerät eine Schalteinheit auf, die das Saugaggregat in Abhängigkeit vom Vorliegen einer Netzspannung am Netzanschluss mit dem Netzanschluss verbindet. Dies hat den Vorteil, dass vom Benutzer keine manuelle Umschaltung des Sauggerätes erfolgen muss, mittels der Schalteinheit erfolgt vielmehr eine selbsttätige Umschaltung von einem Batteriebetrieb auf einen Netzbetrieb, sobald am Netzanschluss des Sauggerätes Netzspannung anliegt.According to the invention, the suction device has a switching unit which connects the suction unit to the mains connection in dependence on the presence of a mains voltage at the mains connection. This has the advantage that the user does not have to manually switch the suction device, by means of the switching unit is rather an automatic switching from a battery operation to a network operation, as soon as the grid connection of the suction mains voltage is applied.

Die Schalteinheit kann beispielsweise ein Relais umfassen, das in Abhängigkeit vom Vorliegen einer Netzspannung am Netzanschluss eine elektrische Verbindung herstellt zwischen dem Saugaggregat und wahlweise der wiederaufladbaren Batterie und dem Netzanschluss.The switching unit may, for example, comprise a relay which, depending on the presence of a mains voltage at the mains connection, establishes an electrical connection between the suction unit and optionally the rechargeable battery and the mains connection.

Zur Ansteuerung der Schalteinheit kann das Sauggerät eine Steuereinheit aufweisen, insbesondere einen Mikrocontroller.For controlling the switching unit, the suction device may have a control unit, in particular a microcontroller.

Die elektrische Leistung des Saugaggregates ist gemäß der Erfindung nur bei Batteriebetrieb des Sauggerätes ist absenkbar. Ist das Sauggerät an eine Netzspannung angeschlossen, wird die elektrische Leistung des Saugaggregates beim Einschalten des Antriebsmotors der Bürstenwalze nicht abgesenkt, da über den Netzanschluss ausreichend Energie zur Verfügung gestellt werden kann. Die elektrische Leistung des Saugaggregates wird nur dann in Abhängigkeit vom Betriebszustand der Bürstenwalze abgesenkt, wenn die Energieversorgung des Sauggerätes mittels der wiederaufladbaren Batterie erfolgt, denn dies ermöglicht es, die Entladezeit der Batterie zu verlängern.The electrical power of the suction unit is according to the invention only during battery operation of the suction device is lowered. If the suction device is connected to a mains voltage, the electric power of the suction unit is not lowered when switching on the drive motor of the brush roller, since sufficient power is made available via the mains connection can. The electric power of the suction unit is lowered only in response to the operating condition of the brush roller when the power supply of the suction device by means of the rechargeable battery, because this makes it possible to extend the discharge of the battery.

Günstig ist es, wenn die elektrische Leistung des Saugaggregates um die elektrische Nennleistung des Antriebsmotors der Bürstenwalze absenkbar ist. Dies hat zur Folge, dass die insgesamt von der Batterie bereitzustellende elektrische Leistung unabhängig vom Betriebszustand der Bürstenwalze ungefähr gleich bleibt. Ist der Antriebsmotor der Bürstenwalze ausgeschaltet, so wird das Saugaggregat mit seiner elektrischen Nennleistung betrieben. Wird der Antriebsmotor der Bürstenwalze eingeschaltet, so wird die elektrische Leistung des Saugaggregates reduziert, und zwar um den Betrag der elektrischen Nennleistung des Antriebsmotors der Bürstenwalze, so dass die Gesamtleistung von Saugaggregat und Antriebsmotor der Bürstenwalze ungefähr gleich bleibt.It is advantageous if the electrical power of the suction unit can be lowered by the nominal electrical power of the drive motor of the brush roller. As a result, the total electric power to be supplied by the battery remains approximately the same regardless of the operating condition of the brush roller. If the drive motor of the brush roller is turned off, the suction unit is operated at its rated electrical power. If the drive motor of the brush roller is turned on, the electric power of the suction unit is reduced by the amount of the rated electric power of the drive motor of the brush roller, so that the overall performance of suction and drive motor of the brush roller remains approximately the same.

Es kann beispielsweise vorgesehen sein, dass die elektrische Leistung des Saugaggregates um mindestens 20% absenkbar ist, vorzugsweise ist die elektrische Leistung um 20 bis 35% absenkbar.It can be provided, for example, that the electrical power of the suction unit can be lowered by at least 20%, preferably the electrical power can be lowered by 20 to 35%.

Zur Verbindung des Saugaggregates wahlweise mit dem Netzanschluss und mit der Batterie kann ein manuell betätigbares Schaltorgan vorgesehen sein, das vom Benutzer betätigt werden kann. Der Benutzer kann dann mittels des Schaltorgans zwischen einem Batteriebetrieb und einem Netzbetrieb des Sauggerätes wählen.For connection of the suction unit optionally with the mains connection and with the battery, a manually operable switching member may be provided which can be actuated by the user. The user can then choose by means of the switching device between a battery operation and a network operation of the suction device.

Wie dargelegt, ist es von Vorteil, wenn die Energleversorgung des Saugaggregates wahlweise mittels der wiederaufladbaren Batterie und der Netzspannung erfolgt. Um den konstruktiven Aufbau des Sauggerätes zu vereinfachen, ist bei einer besonders bevorzugten Ausführungsform der Antriebsmotor der Bürstenwalze unabhängig vom Vorliegen einer Netzspannung am Netzanschluss mit der Batterie verbindbar. Die Energieversorgung des Antriebsmotors der Bürstenwalze erfolgt bei einer derartigen Ausgestaltung lediglich mittels der Batterie, nicht jedoch alternativ über den Netzanschluss. Dies ermöglicht eine Vereinfachung der Steuereinrichtung des Sauggerätes.As stated, it is advantageous if the energy supply of the suction unit is done either by means of the rechargeable battery and the mains voltage. In order to simplify the structural design of the suction device, in a particularly preferred embodiment, the drive motor of the brush roller can be connected to the battery independently of the presence of a mains voltage at the mains connection. The power supply of the drive motor of the brush roller is carried out in such an embodiment only by means of the battery, but not alternatively via the mains connection. This allows a simplification of the control device of the suction device.

Die Absenkung der elektrischen Leistung des Saugaggregates im Batteriebetrieb des Sauggerätes kann dadurch erfolgen, dass das Sauggerät einen zwischen die Batterie und das Saugaggregat geschalteten steuerbaren Spannungswandler aufweist sowie eine Steuereinheit, die den Spannungswandler in Abhängigkeit vom Vorliegen einer Netzspannung am Netzanschluss ansteuert. Als Spannungswandler kann beispielsweise ein DC/DC-Wandler zum Einsatz kommen, der eingangsseitig mit der wiederaufladbaren Batterie und ausgangsseitig mit dem Saugaggregat in elektrischer Verbindung steht. Günstig ist es, wenn mit Hilfe des DC/DC-Wandlers eine Batteriespannung von beispielsweise 24 Volt auf eine Ausgangsspannung von beispielsweise 100 Volt umgesetzt werden kann. Der DC/DC-Wandler weist einen Steuereingang auf, der über mindestens eine Steuerleitung mit dem Ausgang einer Steuereinheit verbunden ist, die den DC/DC-Wandler in Abhängigkeit vom Vorliegen einer Netzspannung am Netzanschluss ansteuert.The lowering of the electrical power of the suction unit in battery operation of the suction device can be effected in that the suction device has a switched between the battery and the suction unit controllable voltage converter and a control unit which controls the voltage converter in response to the presence of a mains voltage at the mains connection. As a voltage converter, for example, a DC / DC converter can be used, which is on the input side with the rechargeable battery and the output side with the suction unit in electrical connection. It is advantageous if, with the aid of the DC / DC converter, a battery voltage of, for example, 24 volts can be converted to an output voltage of, for example, 100 volts. The DC / DC converter has a control input, which is connected via at least one control line to the output of a control unit which controls the DC / DC converter in response to the presence of a mains voltage at the mains connection.

Bei einer bevorzugten Ausführungsform weist das erfindungsgemäße Sauggerät eine Netzspannungserkennungseinheit auf, die der Steuereinheit in Abhängigkeit vom Vorliegen einer Netzspannung am Netzanschluss ein Steuersignal bereitstellt. Wird an den Netzanschluss eine Netzspannung angeschlossen, so wird dies von der Netzspannungserkennungseinheit erkannt, die daraufhin der Steuereinheit ein elektrisches Steuersignal bereitstellt, das das Vorliegen einer Netzspannung signalisiert. Die Steuerung der elektrischen Leistung des Saugaggregates erfolgt dann unabhängig davon, ob die Bürstenwalze ein- oder ausgeschaltet ist. Wird jedoch von der Netzspannungserkennungseinheit ein Steuersignal bereitgestellt, das das Fehlen einer Netzspannung am Netzanschluss signalisiert, so wird die elektrische Leistung des Saugaggregates abgesenkt, wenn der Antriebsmotor der Bürstenwalze in Gang gesetzt wird, um die Entladezeit der Batterie zu verlängern.In a preferred embodiment, the suction device according to the invention has a mains voltage detection unit, which the control unit in dependence from the presence of a mains voltage at the mains connection provides a control signal. If a mains voltage is connected to the mains connection, then this is detected by the mains voltage detection unit, which then provides the control unit with an electrical control signal which signals the presence of a mains voltage. The control of the electrical power of the suction unit is then carried out regardless of whether the brush roller is on or off. If, however, provided by the mains voltage detection unit, a control signal indicating the absence of a mains voltage at the mains connection, the electrical power of the suction unit is lowered when the drive motor of the brush roller is set in motion to extend the discharge time of the battery.

Günstig ist es, wenn das Sauggerät eine Betriebszustandserkennungseinheit aufweist, die der Steuereinheit in Abhängigkeit vom Betriebszustand des Antriebsmotors der Bürstenwalze ein Steuersignal bereitstellt. Mittels der Betriebszustandserkennungseinheit kann der Betriebszustand des Antriebsmotors der Bürstenwalze überwacht werden. Wird der Antriebsmotor beispielsweise mittels eines manuell betätigbaren Schaltorgans in Gang gesetzt, so wird dies von der Betriebszustandserkennungseinheit erkannt, die daraufhin der Steuereinheit ein dem Betriebszustand des Antriebsmotors der Bürstenwalze entsprechendes Steuersignal bereitstellt. In Abhängigkeit von diesem Steuersignal kann dann bei Batteriebetrieb des Sauggerätes die elektrische Leistung des Saugaggregates abgesenkt werden.It is advantageous if the suction device has an operating state detection unit which provides the control unit with a control signal as a function of the operating state of the drive motor of the brush roller. By means of the operating state detection unit, the operating state of the drive motor of the brush roller can be monitored. If the drive motor is set in motion, for example, by means of a manually operable switching element, this is detected by the operating state detection unit, which then provides the control unit with a control signal corresponding to the operating state of the drive motor of the brush roller. In response to this control signal, the electric power of the suction unit can then be lowered during battery operation of the suction device.

Die Netzspannungserkennungseinheit kann beispielsweise in Form eines AC/DC-Wandlers ausgestaltet sein, mit dessen Hilfe eine am Netzanschluss anliegende Wechselspannung in eine Gleichspannung umgewandelt werden kann, die über eine Steuerleitung einer Steuereinheit des Sauggerätes bereitgestellt werden kann.The mains voltage detection unit can be designed, for example, in the form of an AC / DC converter, with the aid of which an AC voltage applied to the mains connection is converted into a DC voltage can, which can be provided via a control line of a control unit of the suction device.

Die nachfolgende Beschreibung einer bevorzugten Ausführungsform der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Es zeigen:

Figur 1:
eine schematische Darstellung eines erfindungsgemäßen Sauggerätes und
Figur 2:
ein Blockschaltbild einer Steuereinrichtung des Sauggerätes aus Figur 1.
The following description of a preferred embodiment of the invention serves in conjunction with the drawings for further explanation. Show it:
FIG. 1:
a schematic representation of a suction device according to the invention and
FIG. 2:
a block diagram of a control device of the suction device off FIG. 1 ,

In Figur 1 ist schematisch ein erfindungsgemäßes Sauggerät in Form eines Staubsaugers 10 dargestellt mit einem Gehäuse 11, das ein als Schmutzsammelbehälter 13 ausgebildetes Gehäuseunterteil sowie ein auf den Schmutzsammelbehälter 13 aufsetzbares Gehäuseoberteil 15 umfasst. Das Gehäuseoberteil 15 nimmt in üblicher Weise ein Saugaggregat 17 auf mit einer Saugturbine 18 und einem Antriebsmotor 19. Das Saugaggregat 17 taucht oberseitig in den Schmutzsammelbehälter 13 ein, der mittels des Saugaggregates 17 wie üblich abgesaugt werden kann.In FIG. 1 schematically, a suction device according to the invention in the form of a vacuum cleaner 10 is shown with a housing 11 which comprises a designed as a dirt collecting container 13 housing base and an attachable to the dirt collecting container 13 housing upper part 15. The upper housing part 15 takes in the usual way a suction unit 17 with a suction turbine 18 and a drive motor 19. The suction unit 17 dips into the top of the dirt collecting 13, which can be sucked by means of the suction unit 17 as usual.

Der Schmutzsammelbehälter 13 weist einen Saugeinlass 21 auf, an den eine Saugleitung 23 angeschlossen ist. Am freien Ende der Saugleitung 23 ist eine Saugbürste 25 angeordnet mit einer Bodendüse 26, in der eine Bürstenwalze 28 drehbar gelagert ist. Die Bürstenwalze 28 steht über übliche und deshalb in der Zeichnung nicht dargestellte Getriebemittel mit einem Antriebsmotor 29 in Verbindung, der in der Bodendüse 26 angeordnet ist.The dirt collecting container 13 has a suction inlet 21, to which a suction line 23 is connected. At the free end of the suction line 23, a suction brush 25 is arranged with a floor nozzle 26, in which a brush roller 28 is rotatably mounted. The brush roller 28 is above usual and therefore in the drawing not shown gear means with a drive motor 29 in conjunction, which is arranged in the floor nozzle 26.

Die Energieversorgung des Staubsaugers 10 erfolgt wahlweise mittels einer wiederaufladbaren Batterie 31, die in einem Batteriefach 32 des Gehäuseoberteils 15 austauschbar gehalten ist, und mittels eines Netzanschlusses 34, der über ein Anschlusskabel 35 mit dem Gehäuse 11 verbunden ist. Sowohl die Batterie 31 als auch das Anschlusskabel 35 sind mit einer im Gehäuseoberteil 15 angeordneten Steuereinrichtung 37 verbunden, die wiederum mit dem Saugaggregat 17 sowie dem Antriebsmotor 29 der Bürstenwalze 28 in elektrischer Verbindung steht.The power supply of the vacuum cleaner 10 is optionally carried out by means of a rechargeable battery 31, which is held interchangeably in a battery compartment 32 of the housing upper part 15, and by means of a mains connection 34 which is connected via a connecting cable 35 to the housing 11. Both the battery 31 and the connection cable 35 are connected to a control device 37 arranged in the upper housing part 15, which in turn is in electrical connection with the suction unit 17 and the drive motor 29 of the brush roller 28.

Oberseitig ist am Gehäuseoberteil 15 ein vom Benutzer betätigbarer Hauptschalter 39 angeordnet, mit dessen Hilfe das Saugaggregat 17 ein- und ausgeschaltet werden kann.On the upper side, a user-operable main switch 39 is arranged on the upper housing part 15, by means of which the suction unit 17 can be switched on and off.

An einem Handgriff 41 der Saugleitung 23 ist ein elektromechanischer Schalter 43 angeordnet zum Ein- und Ausschalten des Antriebsmotors 29 der Bürstenwalze 28.On a handle 41 of the suction line 23, an electromechanical switch 43 is arranged for switching on and off of the drive motor 29 of the brush roller 28th

Die Steuereinrichtung 37 ist in Figur 2 schematisch dargestellt. Sie ist einerseits an die Batterie 31 sowie den Netzanschluss 34 und andererseits an das Saugaggregat 17 und den Antriebsmotor 29 der Bürstenwalze 28 angeschlossen. Die Steuereinrichtung 37 umfasst einen Spannungswandler in Form eines DC/DC-Wandlers 45, der eingangsseitig mit der Batterie 31 und ausgangsseitig mit einer Schalteinheit in Form eines Relais 47 in Verbindung steht, an das das Saugaggregat 17 angeschlossen ist.The control device 37 is in FIG. 2 shown schematically. It is connected on the one hand to the battery 31 and the power connection 34 and on the other hand to the suction unit 17 and the drive motor 29 of the brush roller 28. The control device 37 comprises a voltage converter in the form of a DC / DC converter 45 which is connected on the input side to the battery 31 and on the output side to a switching unit in the form of a relay 47, to which the suction unit 17 is connected.

Die elektrische Verbindung zwischen dem Antriebsmotor 29 der Bürstenwalze 28 und der Batterie 31 erfolgt über eine Betriebszustandserkennungseinheit in Form eines Stromüberwachungsgliedes 49, das den von der Batterie 31 zum Antriebsmotor 29 fließenden Strom überwacht.The electrical connection between the drive motor 29 of the brush roller 28 and the battery 31 via an operating state detection unit in the form of a current monitoring member 49 which monitors the current flowing from the battery 31 to the drive motor 29 current.

Die Steuereinrichtung 37 weist außerdem eine zentrale Steuereinheit in Form eines Mikrocontrollers 51 auf, der über Steuerleitungen 53 und 54 mit dem steuerbaren DC/DC-Wandler 45 in Verbindung steht, das Relais 47 ansteuert und über eine erste Verbindungsleitung 56 mit dem Stromüberwachungsglied 49 verbunden ist. Über weitere Verbindungsleitungen 58, 59 ist an den Mikrocontroller 51 eine Netzspannungserkennungseinheit in Form eines AC/DC-Wandlers 61 angeschlossen, der eingangsseitig mit dem Netzanschluss 34 in Verbindung steht.The control device 37 also has a central control unit in the form of a microcontroller 51, which is connected via control lines 53 and 54 to the controllable DC / DC converter 45, which activates the relay 47 and is connected to the current monitoring element 49 via a first connection line 56 , Via further connecting lines 58, 59, a mains voltage recognition unit in the form of an AC / DC converter 61 is connected to the microcontroller 51 and is connected to the mains connection 34 on the input side.

Der Antriebsmotor 29 der Bürstenwalze 28 wird unabhängig davon, ob der Netzanschluss 34 an eine Netzspannung angeschlossen ist oder nicht, von der Batterie 31 mit Energie versorgt. Im Gegensatz hierzu erfolgt die Energieversorgung des Saugaggregates 17 wahlweise über den Netzanschluss 34 oder von der Batterie 31. Liegt am Netzanschluss 34 Netzspannung an, so wird dem Mikrocontroller 51 mit Hilfe des AC/DC-Wandlers 61 über die Verbindungsleitungen 58 und 59 eine Versorgungsspannung bereitgestellt, die gleichzeitig als Steuersignal dient, und der Mikrocontroller 51 steuert das Relais 47 derart an, dass dieses eine elektrische Verbindung sicherstellt zwischen dem Netzanschluss 34 und dem Saugaggregat 17.The drive motor 29 of the brush roller 28 is powered by the battery 31 regardless of whether the power supply 34 is connected to a mains voltage or not. In contrast to this, the energy supply of the suction unit 17 is optionally via the mains connection 34 or from the battery 31. If mains voltage is applied to the mains connection 34, a supply voltage is provided to the microcontroller 51 with the aid of the AC / DC converter 61 via the connecting lines 58 and 59 which simultaneously serves as a control signal, and the microcontroller 51 controls the relay 47 in such a way that it ensures an electrical connection between the mains connection 34 and the suction unit 17.

Liegt am Netzanschluss 34 keine Netzspannung an, so wird das Relais 47 vom Mikrocontroller 51, dessen Stromversorgung dann über die Batterie 31 erfolgt, derart angesteuert, dass das Saugaggregat 17 über den DC/DC-Wandler 45 mit der Batterie 31 verbunden ist. Die von der Batterie 31 zur Verfügung gestellte Eingangsspannung in Höhe von 24 Volt wird vom DC/DC-Wandler in eine Ausgangsspannung von 100 Volt umgewandelt, die im Batteriebetrieb des Staubsaugers 10 dem Saugaggregat 17 zur Verfügung gestellt wird.If there is no mains voltage at the mains connection 34, the relay 47 is controlled by the microcontroller 51, whose power supply then takes place via the battery 31, in such a way that the suction unit 17 is connected to the battery 31 via the DC / DC converter 45. The provided by the battery 31 input voltage in the amount of 24 volts is converted by the DC / DC converter in an output voltage of 100 volts, which is provided to the suction unit 17 during battery operation of the vacuum cleaner 10.

Die Steuerung des DC/DC-Wandlers 45 erfolgt mittels des Mikrocontrollers 51. Dieser steuert den DC/DC-Wandler 45 derart, dass bei ausgeschaltetem Antriebsmotor 29, das heißt bei geöffnetem Schalter 43, dem Saugaggregat 17 eine vorgebbare elektrische Nennleistung zur Verfügung gestellt wird. Wird jedoch der Schalter 43 geschlossen, so fließt von der Batterie 31 zum Antriebsmotor 29 der Bürstenwalze 28 ein elektrischer Strom, der vom Stromüberwachungsglied 49 erfasst wird. Das Stromüberwachungsglied 49 stellt daraufhin dem Mikrocontroller 51 ein Steuersignal bereit, aufgrund dessen der Mikrocontroller 51 den DC/DC-Wandler 45 zu einer Absenkung der elektrischen Leistung veranlasst, die dem Saugaggregat 17 zur Verfügung gestellt wird. Diese Leistungsabsenkung erfolgt nur während des Batteriebetriebes des Staubsaugers 10, nicht jedoch dann, wenn am Netzanschluss 34 Netzspannung anliegt und die Energieversorgung des Saugaggregates 17 über den Netzanschluss 34 erfolgt. Bei Netzbetrieb wird das Saugaggregat 17 vielmehr unabhängig vom Betriebszustand des Antriebsmotor 29 mit seiner elektrischen Nennleistung betrieben.The control of the DC / DC converter 45 by means of the microcontroller 51. This controls the DC / DC converter 45 such that when the drive motor 29, that is, when the switch 43, the suction unit 17 a predetermined electrical rated power is provided , However, when the switch 43 is closed, an electric current flowing from the battery 31 to the drive motor 29 of the brush roller 28 is detected by the current monitoring member 49. The current monitoring element 49 then provides the microcontroller 51 with a control signal on the basis of which the microcontroller 51 causes the DC / DC converter 45 to lower the electrical power which is supplied to the suction unit 17. This power reduction takes place only during battery operation of the vacuum cleaner 10, but not when mains voltage is applied to the mains connection 34 and the power supply of the suction unit 17 via the mains connection 34 takes place. In mains operation, the suction unit 17 is rather operated independently of the operating state of the drive motor 29 with its rated electrical power.

Claims (7)

  1. Suction device (10) with a dirt collecting container (13) which is in flow connection with a suction unit (17) and comprises a suction inlet (21) to which a suction hose (23) is connected, there being disposed at the free end of the suction hose (23) a suction brush (25) with a floor nozzle (26), in which there is rotatably mounted a brush roller (28) which is drivable by an electric motor, and the suction device (10) comprising at least one rechargeable battery (31), and the electric power of the suction unit (17) being automatically lowerable in dependence upon the operating state of the brush roller (28), characterized in that the suction device (10) comprises a mains connection (34) for connection of the suction device (10) to a mains voltage, and in that the suction unit (17) is selectively connectable to the rechargeable battery (31) and to the mains connection (34), the suction device (10) comprising a switching unit (47) which automatically connects the suction unit (17) to the mains connection (34) in dependence upon the presence of a mains voltage at the mains connection (34), and the electric power of the suction unit (17) only being lowerable when the suction device (10) is operated by battery.
  2. Suction device in accordance with claim 1, characterized in that the electric power of the suction unit (17) is lowerable by the electric power rating of the drive motor (29) of the brush roller (28).
  3. Suction device in accordance with claim 1, characterized in that the electric power of the suction unit (17) is lowerable by at least 20%.
  4. Suction device in accordance with any one of the preceding claims, characterized in that a drive motor (29) of the brush roller (28) is connectable to the battery (31) independently of the presence of a mains voltage at the mains connection (34).
  5. Suction device in accordance with any one of the preceding claims, characterized in that the suction device (10) comprises a controllable voltage converter (45) connected between the battery (31) and the suction unit (17), and a control unit (51) which controls the voltage converter (45) in dependence upon the presence of a mains voltage at the mains connection (34).
  6. Suction device in accordance with claim 5, characterized in that the suction device (10) comprises a mains voltage recognition unit (49) which provides the control unit (51) with a control signal in dependence upon the presence of a mains voltage at the mains connection (34).
  7. Suction device in accordance with any one of the preceding claims, characterized in that the suction device (10) comprises an operating state recognition unit (49) which provides a control unit (51) of the suction device (10) with a control signal in dependence upon the operating state of the brush roller (28).
EP06015219A 2005-09-16 2006-07-21 Suction device Not-in-force EP1764020B1 (en)

Applications Claiming Priority (1)

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DE102005045309A DE102005045309A1 (en) 2005-09-16 2005-09-16 suction device

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EP1764020A1 EP1764020A1 (en) 2007-03-21
EP1764020B1 true EP1764020B1 (en) 2010-08-25

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ATE478596T1 (en) 2010-09-15
DE502006007717D1 (en) 2010-10-07
DK1764020T3 (en) 2010-11-29
EP1764020A1 (en) 2007-03-21
DE102005045309A1 (en) 2007-03-22

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