EP0022224B1 - Suction cleaner with a variable rotation-speed blower motor and plug-in unit for an auxiliary brush appliance - Google Patents

Suction cleaner with a variable rotation-speed blower motor and plug-in unit for an auxiliary brush appliance Download PDF

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Publication number
EP0022224B1
EP0022224B1 EP80103631A EP80103631A EP0022224B1 EP 0022224 B1 EP0022224 B1 EP 0022224B1 EP 80103631 A EP80103631 A EP 80103631A EP 80103631 A EP80103631 A EP 80103631A EP 0022224 B1 EP0022224 B1 EP 0022224B1
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EP
European Patent Office
Prior art keywords
brush attachment
socket
vacuum cleaner
control circuit
blower motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80103631A
Other languages
German (de)
French (fr)
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EP0022224A1 (en
Inventor
Helmut Dr. Schetelig
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.)
Siemens AG
Original Assignee
Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT80103631T priority Critical patent/ATE3502T1/en
Publication of EP0022224A1 publication Critical patent/EP0022224A1/en
Application granted granted Critical
Publication of EP0022224B1 publication Critical patent/EP0022224B1/en
Expired legal-status Critical Current

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    • 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
    • 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

Definitions

  • the invention relates to a vacuum cleaner with a speed-controllable fan motor and a socket arranged on the housing of the vacuum cleaner for connecting an electrically driven brush attachment.
  • the suction power can be adapted to the respective circumstances by corresponding speed control of the blower motor. If a brush attachment is connected to the vacuum cleaner socket, it will run at a constant high speed. So you can reduce the suction power in the known vacuum cleaner to protect a sensitive carpet, but not the speed of the brush attachment.
  • the invention has for its object to design a vacuum cleaner so that in addition to reducing the suction power, a reduction in the speed of the brush attachment device is possible, whereby blocking of the brush attachment device should be excluded.
  • the motor of the brush attachment is connected via the socket to the speed control circuit of the blower motor in parallel with it and via a switching device actuated as a function of the connection of the brush attachment, the setting range of the common speed control circuit for safe operation the value of the brush attachment device can be limited. It is thus ensured in such a vacuum cleaner that the speed of the brush attachment device is correspondingly reduced when the suction power is reduced. Depending on the connection of a brush attachment, a minimum suction power and thus also a minimum speed of the brushes of the attachment is fixed. If the brush attachment is not connected, however, the suction power of the vacuum cleaner can be reduced further for special applications (suction of curtains).
  • the suction power and the brush speed are limited to a certain value in that the switching device consists of a contact which can be actuated by the plug which can be plugged into the socket, via which part of a variable resistor forming the control range is bridged or also thereby, that the switching device consists of a current relay, the winding of which is located in one line of the socket and via the contact of which part of a variable resistor forming the control range is bridged.
  • 1 and 2, 1 denotes a blower motor of a vacuum cleaner designed as a universal motor.
  • This blower motor can be switched with its one connection via a switch 2 to phase R of an AC voltage network.
  • a speed control circuit 3 is connected between the other connection of the blower motor 1 and the center conductor Mp of the AC voltage network.
  • This speed control circuit 3 has a triac 4, to which an RC element consisting of an ohmic resistor 5 and a capacitor 6 is connected in parallel.
  • a control circuit 7 is connected in parallel with the triac 4 between the relevant connection of the blower motor 1 and the center conductor Mp of the AC voltage network.
  • the control circuit 7 consists of the series connection of a first and second ohmic resistor 8 and 9 with a control capacitor 10 and a variable resistor 11 connected in parallel with the first ohmic resistor 8. Between the second ohmic resistor 9 and the control capacitor 10, the triac 4 with its control circuit is over a control resistor 12 and a trigger diode 13 connected. In parallel to the connections of the blower motor 1, the plug contacts 14 and 15 of a socket arranged on the vacuum cleaner housing and serving for the connection of a brush attachment are connected.
  • variable resistor 11 is provided with a fixed tap 16. This tap 16 is connected to a contact 17 which is actuated when a plug is inserted into the socket (indicated by line 18) and thus bridges part of the variable resistor 11.
  • Fig. The fixed tap 16 of the variable resistor 11 is connected to a contact 19 of a current relay 20 connected into a line of the socket. If a brush attachment is connected to the plug contacts 14 and 15 of the socket, the current relay 20 is energized and closes its contact 19, which also bridges part of the variable resistor 11.
  • the speed control circuit 3 By bridging a part of the variable resistor 11, the speed control circuit 3 is given a minimum value for the speed of the blower motor 1. Since the plug contacts 14 and 15 parallel to the blower motor 1 this minimum value also applies to the brush attachment. Since the contacts 17 and 19 can only be actuated depending on the connection of a brush attachment, the specification of the minimum value for the speed control circuit 3 is only effective when a brush attachment is connected. If the vacuum cleaner is operated without a brush attachment, the full speed control range can be used. The specification of a minimum value when connecting a brush attachment device ensures that the brush attachment device receives sufficient voltage to prevent blocking.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

1. A vacuum cleaner comprising a speed-controlled fan motor in a housing having a socket provided to connect an electrically driven brush attachment, characterized in that the motor of the brush attachment device is connected via the socket in parallel to the speed control circuit (3) of the fan motor (1), and the regulating range of this common speed control circuit (3) can be set to a limited value, ensuring reliable operation of the brush attachment by means of a switching device that is actuated upon connection of the brush attachment.

Description

Die Erfindung bezieht sich auf einen Staubsauger mit einem drehzahlsteuerbaren Gebläsemotor und einer am Gehäuse des Staubsaugers angenordneten Steckdose zum Anschluß eines elektrisch angetriebenen Bürstvorsatzgerätes.The invention relates to a vacuum cleaner with a speed-controllable fan motor and a socket arranged on the housing of the vacuum cleaner for connecting an electrically driven brush attachment.

Bei einem solchen handelsüblichen Staubsauger kann die Saugleistung durch entsprechende Drehzahlsteuerung des Gebläsemotors den jeweiligen Gegebenheiten angepaßt werden. Wird ein Bürstvorsatzgerät an der Steckdose des Staubsaugers angeschlossen, dann läuft dieses mit konstant hoher Drehzahl. Man kann also bei dem bekannten Staubsauger zur Schonung eines empfindlichen Teppichs zwar die Saugleistung, jedoch nicht die Drehzahl des Bürstvorsatzgerätes reduzieren.In such a commercially available vacuum cleaner, the suction power can be adapted to the respective circumstances by corresponding speed control of the blower motor. If a brush attachment is connected to the vacuum cleaner socket, it will run at a constant high speed. So you can reduce the suction power in the known vacuum cleaner to protect a sensitive carpet, but not the speed of the brush attachment.

Der Erfindung liegt die Aufgabe zugrunde, einen Staubsauger so auszubilden, daß neben der Reduzierung der Saugleistung auch eine Reduzierung der Drehzahl des Bürstvorsatzgerätes möglich ist, wobei ein Blockieren des Bürstvorsatzgerätes ausgeschlossen werden soll.The invention has for its object to design a vacuum cleaner so that in addition to reducing the suction power, a reduction in the speed of the brush attachment device is possible, whereby blocking of the brush attachment device should be excluded.

Die Lösung der gestellten Aufgabe gelingt nach der Erfindung dadurch, daß der Motor des Bürstvorsatzgerätes über die Steckdose an den Drehzahlsteuerkreis des Gebläsemotors parallel zu diesem angeschlossen ist und über eine in Abhängigkeit vom Anschluß des Bürstvorsatzgerätes betätigte Schaltvorrichtung der Stellbereich des gemeinsamen Drehzahlsteuerkreises auf einen den sicheren Betrieb des Bürstvorsatzgerätes ermöglichenden Wert begrenzbar ist. Somit ist bei einem solchen Staubsauger sichergestellt, daß bei einer Verminderung der Saugleistung auch die Drehzahl des Bürstvorsatzgerätes entsprechend herabgesetzt wird. In Abhängigkeit vom Anschluß eines Bürstvorsatzgerätes wird eine Mindestsaugleistung und damit auch eine Mindestdrehzahl der Bürsten des Vorsatzgerätes fest vorgegeben. Bei nicht angeschlossenem Bürstvorsatzgerät kann hingegen die Saugleistung des Staubsaugers für spezielle Anwendungsfälle (Absaugen von Gardinen) weiter vermindert werden.The solution of the problem is achieved according to the invention in that the motor of the brush attachment is connected via the socket to the speed control circuit of the blower motor in parallel with it and via a switching device actuated as a function of the connection of the brush attachment, the setting range of the common speed control circuit for safe operation the value of the brush attachment device can be limited. It is thus ensured in such a vacuum cleaner that the speed of the brush attachment device is correspondingly reduced when the suction power is reduced. Depending on the connection of a brush attachment, a minimum suction power and thus also a minimum speed of the brushes of the attachment is fixed. If the brush attachment is not connected, however, the suction power of the vacuum cleaner can be reduced further for special applications (suction of curtains).

Nach einer Ausgestaltung der Erfindung gelingt die Begrenzung der Saugleistung und der Bürstendrehzahl auf einen bestimmten Wert dadurch, daß die Schaltvorrichtung aus einem durch den in die Steckdose einsteckbaren Stecker betätigbaren Kontakt besteht, über den ein Teil eines den Stellbereich bildenden Stellwiderstandes überbrückt ist oder auch dadurch, daß die Schaltvorrichtung aus einem Stromrelais besteht, dessen Wicklung in der einen Leitung der Steckdose liegt und über dessen Kontakt ein Teil eines den Stellbereich bildenden Stellwiderstandes überbrückt ist.According to one embodiment of the invention, the suction power and the brush speed are limited to a certain value in that the switching device consists of a contact which can be actuated by the plug which can be plugged into the socket, via which part of a variable resistor forming the control range is bridged or also thereby, that the switching device consists of a current relay, the winding of which is located in one line of the socket and via the contact of which part of a variable resistor forming the control range is bridged.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles wird der Anmeldungsgegenstand nachfolgend näher beschrieben. Es zeigt

  • Fig. 1 einen Drehzahlsteuerkreis für den Gebläsemotor eines Staubsaugers, bei dem der Stellbereich durch einen in die Steckdose einführbaren Stecker betätigten Kontakt begrenzt ist,
  • Fig. 2 einen Drehzahlsteuerkreis für den Gebläsemotor eines Staubsaugers, bei dem der Stellbereich durch den Kontakt eines im Steckdosenkreis angeordneten Stromrelais begrenzt ist.
The subject of the application is described in more detail below using an exemplary embodiment shown in the drawing. It shows
  • 1 shows a speed control circuit for the blower motor of a vacuum cleaner, in which the adjustment range is limited by a contact which can be inserted into the socket,
  • Fig. 2 shows a speed control circuit for the blower motor of a vacuum cleaner, in which the adjustment range is limited by the contact of a current relay arranged in the socket circuit.

In Fig. 1 und 2 ist mit 1 jeweils ein als Universalmotor ausgebildeter Gebläsemotor eines Staubsaugers bezeichnet. Dieser Gebläsemotor ist mit seinem einen Anschluß über einen Schalter 2 an die Phase R eines Wechselspannungsnetzes schaltbar. Zwischen dem anderen Anschluß des Gebläsemotors 1 und dem Mittelpunktsleiter Mp des Wechselspannungsnetzes ist ein Drehzahlsteuerkreis 3 angeschlossen. Dieser Drehzahlsteuerkreis 3 weist einen Triac 4 auf, zu dem ein aus einem ohmschen Widerstand 5 und einem Kondensator 6 bestehendes RC-Glied parallel geschaltet ist. Ferner ist parallel zu dem Triac 4 ein Steuerkreis 7 zwischen dem betreffenden Anschluß des Gebläsemotors 1 und dem Mittelpunktsleiter Mp des Wechselspannungsnetzes angeschlossen. Der Steuerkreis 7 besteht aus der Reihenschaltung eines ersten und zweiten ohmschen Widerstandes 8 und 9 mit einem Steuerkondensator 10 und einem zu dem ersten ohmschen Widerstand 8 parallelgeschalteten Stellwiderstand 11. Zwischen dem zweiten ohmschen Widerstand 9 und dem Steuerkondensator 10 ist der Triac 4 mit seinem Steuerkreis über einen Steuerwiderstand 12 und eine Triggerdiode 13 angeschlossen. Parallel zu den Anschlüssen des Gebläsemotors 1 sind die Steckkontakte 14 und 15 einer am Staubsaugergehäuse angeordneten und für den Anschluß eines Bürstvorsatzgerätes dienenden Steckdose angeschlossen.1 and 2, 1 denotes a blower motor of a vacuum cleaner designed as a universal motor. This blower motor can be switched with its one connection via a switch 2 to phase R of an AC voltage network. A speed control circuit 3 is connected between the other connection of the blower motor 1 and the center conductor Mp of the AC voltage network. This speed control circuit 3 has a triac 4, to which an RC element consisting of an ohmic resistor 5 and a capacitor 6 is connected in parallel. Furthermore, a control circuit 7 is connected in parallel with the triac 4 between the relevant connection of the blower motor 1 and the center conductor Mp of the AC voltage network. The control circuit 7 consists of the series connection of a first and second ohmic resistor 8 and 9 with a control capacitor 10 and a variable resistor 11 connected in parallel with the first ohmic resistor 8. Between the second ohmic resistor 9 and the control capacitor 10, the triac 4 with its control circuit is over a control resistor 12 and a trigger diode 13 connected. In parallel to the connections of the blower motor 1, the plug contacts 14 and 15 of a socket arranged on the vacuum cleaner housing and serving for the connection of a brush attachment are connected.

Der Stellwiderstand 11 ist mit einer festen Anzapfung 16 versehen. Diese Anzapfung 16 ist mit einem Kontakt 17 verbunden, der beim Einstecken eines Steckers in die Steckdose betätigt wird (durch Linie 18 angedeutet) und somit einen Teil des Stellwiderstandes 11 überbrückt.The variable resistor 11 is provided with a fixed tap 16. This tap 16 is connected to a contact 17 which is actuated when a plug is inserted into the socket (indicated by line 18) and thus bridges part of the variable resistor 11.

In Fig. ist die feste Anzapfung 16 des Stellwiderstandes 11 mit einem Kontakt 19 eines in die eine Leitung der Steckdose geschalteten Stromrelais 20 verbunden. Ist ein Bürstvorsatzgerät an die Steckkontakte 14 und 15 der Steckdose angeschlossen, so wird das Stromrelais 20 erregt und schließt seinen Kontakt 19, wodurch ebenfalls ein Teil des Stellwiderstandes 11 überbrückt wird.In Fig. The fixed tap 16 of the variable resistor 11 is connected to a contact 19 of a current relay 20 connected into a line of the socket. If a brush attachment is connected to the plug contacts 14 and 15 of the socket, the current relay 20 is energized and closes its contact 19, which also bridges part of the variable resistor 11.

Durch das Überbrücken eines Teiles des Stellwiderstandes 11 wird dem Drehzahlsteuerkreis 3 ein Mindestwert für die Drehzahl des Gebläsemotors 1 vorgegeben. Da die Steckkontakte 14 und 15 zu dem Gebläsemotor 1 parallel geschaltet sind, gilt dieser Mindestwert auch für das Bürstvorsatzgerät. Da der Kontakt 17 bzw. 19 jeweils nur in Abhängigkeit vom Anschluß eines Bürstvorsatzgerätes betätigt werden kann, ist die Vorgabe des Mindestwertes für den Drehzahlsteuerkreis 3 nur bei einem angeschlossenen Bürstvorsatzgerät wirksam. Wird der Staubsauger ohne Bürstvorsatzgerät betrieben, so kann der volle Drehzahlsteuerbereich genutzt werden. Durch die Vorgabe eines Mindestwertes beim Anschluß eines Bürstvorsatzgerätes wird sichergestellt, daß das Bürstvorsatzgerät eine ausreichende Spannung erhält, um ein Blockieren zu verhindern.By bridging a part of the variable resistor 11, the speed control circuit 3 is given a minimum value for the speed of the blower motor 1. Since the plug contacts 14 and 15 parallel to the blower motor 1 this minimum value also applies to the brush attachment. Since the contacts 17 and 19 can only be actuated depending on the connection of a brush attachment, the specification of the minimum value for the speed control circuit 3 is only effective when a brush attachment is connected. If the vacuum cleaner is operated without a brush attachment, the full speed control range can be used. The specification of a minimum value when connecting a brush attachment device ensures that the brush attachment device receives sufficient voltage to prevent blocking.

Claims (3)

1. A vacuum cleaner comprising a speed-controlled fan motor in a housing having a socket provided to connect an elekctrically driven brush attachment, characterised in that the motor of the brush attachment device is connected via the socket in parallel to the speed control circuit (3) of the fan motor (1), and the regulating range of this common speed control circuit (3) can be set to a limited value, ensuring reliable operation of the brush attachment by means of a switching device that is actuated upon connection of the brush attachment.
2. A vacuum cleaner as claimed in Claim 1, characterised in that the switching device consists of a contact (17) which is operated by a plug insertable into the socket, an which bridges a section of a regulating resistor (11) to adjust the regulating range.
3. A vacuum cleaner as claimed in Claim 1, characterised in that the switching device consists of a current relay (20) whose winding lies in the path of one line to the socket, and operates a contact (19), when energised, to bridge a section of a regulating esistor (11), which sets the regulating range.
EP80103631A 1979-07-06 1980-06-26 Suction cleaner with a variable rotation-speed blower motor and plug-in unit for an auxiliary brush appliance Expired EP0022224B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80103631T ATE3502T1 (en) 1979-07-06 1980-06-26 VACUUM CLEANER WITH AN ADJUSTABLE SPEED BLOWER MOTOR AND SOCKET FOR A BRUSH HEAD.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2927433 1979-07-06
DE2927433A DE2927433A1 (en) 1979-07-06 1979-07-06 VACUUM CLEANER WITH A SPEED-CONTROLLED BLOWER MOTOR AND A SOCKET FOR AN EXTENSION HEADER

Publications (2)

Publication Number Publication Date
EP0022224A1 EP0022224A1 (en) 1981-01-14
EP0022224B1 true EP0022224B1 (en) 1983-05-25

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ID=6075129

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103631A Expired EP0022224B1 (en) 1979-07-06 1980-06-26 Suction cleaner with a variable rotation-speed blower motor and plug-in unit for an auxiliary brush appliance

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EP (1) EP0022224B1 (en)
AT (1) ATE3502T1 (en)
DE (1) DE2927433A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3112376A1 (en) * 1981-03-28 1982-11-18 Miele & Cie GmbH & Co, 4830 Gütersloh Vacuum cleaner, especially a floor vacuum cleaner
DE8816200U1 (en) * 1988-12-30 1989-02-16 C. & E. Fein Gmbh & Co, 7000 Stuttgart Dust collector and dust-free work equipment
JP2983658B2 (en) * 1991-02-14 1999-11-29 三洋電機株式会社 Electric vacuum cleaner
DE19813434A1 (en) * 1998-03-27 1999-09-30 Proair Geraetebau Gmbh Wet suction vacuum cleaning apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7304135U (en) * 1973-05-30 Fakir Werk Kicherer W Maschinen Und Metallwarenfabrik Control and switching device for burst and knock vacuum cleaners
US3588943A (en) * 1968-11-12 1971-06-29 Whirlpool Co Vacuum cleaner suction and brush control
US3579706A (en) * 1968-11-12 1971-05-25 Whirlpool Co Vacuum cleaner motor control
DE2814729A1 (en) * 1978-04-05 1979-10-11 Siemens Ag Vacuum cleaner with interchangeable fittings controlling motor speed - uses contacts in fitting connected to resistance in motor supply
DE2819193A1 (en) * 1978-05-02 1979-11-08 Siemens Ag VACUUM CLEANER WITH A SPEED CONTROL DEVICE FOR THE FAN UNIT

Also Published As

Publication number Publication date
DE2927433A1 (en) 1981-01-22
EP0022224A1 (en) 1981-01-14
ATE3502T1 (en) 1983-06-15

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