EP1656874A2 - Aspirateur avec sécurité thermique du moteur - Google Patents

Aspirateur avec sécurité thermique du moteur Download PDF

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Publication number
EP1656874A2
EP1656874A2 EP05024573A EP05024573A EP1656874A2 EP 1656874 A2 EP1656874 A2 EP 1656874A2 EP 05024573 A EP05024573 A EP 05024573A EP 05024573 A EP05024573 A EP 05024573A EP 1656874 A2 EP1656874 A2 EP 1656874A2
Authority
EP
European Patent Office
Prior art keywords
electric motor
temperature
motor
detector
vacuum cleaner
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
EP05024573A
Other languages
German (de)
English (en)
Other versions
EP1656874B1 (fr
EP1656874A3 (fr
Inventor
Toshiaki Fujiwara
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.)
Panasonic Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP1656874A2 publication Critical patent/EP1656874A2/fr
Publication of EP1656874A3 publication Critical patent/EP1656874A3/fr
Application granted granted Critical
Publication of EP1656874B1 publication Critical patent/EP1656874B1/fr
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
    • 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
    • A47L9/2805—Parameters or conditions being sensed
    • A47L9/2831—Motor parameters, e.g. motor load or speed
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • 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
    • 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
    • A47L9/2863—Control elements activated by pivoting movement of the upright vacuum cleaner handle

Definitions

  • the present invention relates to a vacuum cleaner; and, more particularly, to a control mechanism for an electric motor for driving a rotational brush which brushes dust particles.
  • vacuum cleaner main body 50 includes electric blower 51 for generating a suction air stream for sucking in dust particles and dust chamber 52 for collecting dust particles therein, wherein dust chamber 52 is provided at a suction side of electric blower 51, i.e., above electric blower 51.
  • Hose 60 communicated at one end thereof with dust chamber 52 is installed at a frontal portion of vacuum cleaner main body 50, and the other end of hose 60 is connected to suction head 80 including rotational brush 53, electric motor 81 for driving the rotational brush 53, and so forth.
  • Suction head 80, hose 60 and dust chamber 52 form an air suction passage.
  • a user controls operations of electric blower 51 and electric motor 81 for rotating rotational brush 53 depending on the state of a floor to be cleaned by manipulating switch 82 installed on handle 54.
  • electric motor 81 is cooled down by the air stream that is made to flow in the air suction passage by the operation of electric blower 51 (see, for example, specification of US Patent No. 6533611).
  • a temperature sensor in general especially the one with the self-hold function is of a high price.
  • an object of the present invention to provide a low-cost vacuum cleaner having a high safety and an increased user convenience.
  • a vacuum cleaner including: an electric motor for driving a rotational brush for brushing dust particles from a surface to be cleaned; an electric blower for generating a suction air stream for sucking in the dust particles; a dust chamber for collecting the dust particles therein; a motor controller for controlling the electric motor; an input controller for controlling the electric blower; a current detector for detecting a current flowing through the motor controller; and a temperature detector for detecting a temperature of the electric motor, wherein if the temperature of the electric motor increases over a predetermined temperature value, the electric motor is stopped and the stoppage of the electric motor is detected by the current detector.
  • a vacuum cleaner including: an electric motor for driving a rotational brush for brushing dust particles from a surface to be cleaned; an electric blower for generating a suction air stream for sucking in the dust particles; a dust chamber for storing the dust particles therein; a motor controller for controlling the electric motor; an input controller for controlling the electric blower; a motor detector for detecting whether the electric motor is being driven or not; and a temperature detector for detecting a temperature of the electric motor, wherein the electric motor is stopped unless outputs from the motor detector and the temperature detector are in.
  • Fig. 1 is a side view of a vacuum cleaner in accordance with a first preferred embodiment of the present invention and Fig. 2 sets forth a circuit block diagram thereof.
  • the vacuum cleaner includes electric motor 1 for driving rotational brush 2 for brushing dust particles on a floor to be cleaned; electric blower 3 for generating suction air stream for sucking in dust particles; dust chamber 4 for collecting dust particles therein; motor controller 5 for controlling the rotational speed of electric motor 1; input control unit 6 for controlling electric blower 3; and current detector 7 for detecting an electric current flowing through motor controller 5.
  • temperature detector 8 detects the temperature of electric motor 1.
  • temperature detector 8 includes cheap thermostat 9 (of a self-reset type) and is connected to electric motor 1 in series. As for thermostat 9, if the temperature of electric motor 1 increases up to a first predetermined value (e.g., 120 °C), a closed contact point of thermostat 9 is opened, whereas the opened contact point is closed again if electric motor 1 is cooled down such that its temperature decreases to a second predetermined value (e.g., 70 °C). Further, switch 10 installed on a handle of the vacuum cleaner is used for a user to turn on or off the operation of the vacuum cleaner.
  • a first predetermined value e.g. 120 °C
  • rotational brush 2 is operated at a low rotational speed for a long period of time or if rotational brush 2 is locked due to a heavy load of the surface to be cleaned, such as a thick, heavy carpet or electric motor 1 itself is locked, the temperature of electric motor 1 increases. In this case, if the temperature of electric motor 1 is detected to reach the first predetermined temperature value by temperature detector 8, the contact point of thermostat 9 of temperature detector 8 is opened, and at the same time current detector 7 will detect there is no current flowing through motor controller 5.
  • motor controller 5 controls to have switch 10 to be turned off or outputs a stop signal of electric motor 1 continuously until switch 10 is turned off or power supply is cut off. For example, if it is determined that electric motor 1 is stopped, the power is not supplied to electric motor 1 until switch 10 is turned off or power supply is cut off.
  • switch 10 which is a power switch for starting or cutting off a power supply
  • switch 10 is exemplified as an "off" switch for use in stopping the load on electric motor 1 or electric blower 3 in the above-described first preferred embodiment
  • a signal switch (not shown) instead of the power switch to generate an "off" signal.
  • the load can be stopped. That is, the "off" switch can be implemented by an element other than the power switch.
  • Figs. 3A and 3B present partial cross sectional views of major components of a vacuum cleaner in accordance with a second preferred embodiment of the present invention.
  • Fig. 4 is a circuit block diagram thereof.
  • parts identical to those described in the first preferred embodiment will be assigned same reference numerals, and description thereof will be omitted.
  • electric motor detector 11 detects whether electric motor 1 is being driven or not.
  • micro switch 12 for distinguishing a state where rotational brush 2 is not driven, i.e., a main body standing state (as shown in Fig. 3A) in which main body 15 stands upright from a state where main body 15 is inclined to drive rotational brush 2, i.e., a cleaning state (as shown in Fig. 3B).
  • Reference numeral 12a is a lever of micro switch 12.
  • lever 12a of micro switch 12 When main body 15 is in the standing state, lever 12a of micro switch 12 is opened, as illustrated in Fig. 3A, so that a contact point of micro switch 12 is also in an open state.
  • lever 12a of micro switch 12 is closed, as shown in Fig. 3B.
  • temperature detector 8 includes thermostat 9 and first fixed resistor 13 (e.g., 1 k ⁇ ) connected to thermostat 9 in parallel. Also, electric motor detector 11 is connected to temperature detector 8 in series, which is also connected to second fixed resistor 14 (which is set to have a value of 1 k ⁇ identical to that of first fixed resistor 13) in series. In this configuration, a voltage divided by first and second resistor 13 and 14 can be inputted to motor controller 5.
  • first fixed resistor 13 e.g., 1 k ⁇
  • electric motor detector 11 is connected to temperature detector 8 in series, which is also connected to second fixed resistor 14 (which is set to have a value of 1 k ⁇ identical to that of first fixed resistor 13) in series.
  • second fixed resistor 14 which is set to have a value of 1 k ⁇ identical to that of first fixed resistor 13
  • detection of a current state of the vacuum cleaner and control operation are performed as follows based on an input voltage to motor controller 5. If an input of 0.0V is detected, main body 15 is determined to be in the standing state, so that electric motor 1 is stopped; if an input of 2.5V is detected, main body 15 is determined to be in the cleaning state, but since the temperature of electric motor 1 is high, electric motor 1 is maintained stopped; and if an input of 5.0V is detected, main body 15 is determined to be in the cleaning state and the temperature of electric motor 1 is low, so that electric motor 1 is operated.
  • a stop signal indicating the stoppage of electric motor 1 is continuously outputted until an "off-operation" is inputted by switch 10 or power supply is cut off.
  • the temperature of electric motor 1 is reduced to, e.g., the second predetermined value, electric motor 1 is maintained stopped without being driven to rotate unprepared.
  • thermostat 9 and first fixed resistor 13 connected thereto in parallel are used as temperature detector 8
  • a thermistor or the like is employed as temperature detector 8
  • installation of the fixed resistor becomes unnecessary and it is still possible to perform a delicate control of the temperature of electric motor 1 (for example, with regard to a determination value for use in stopping a driving signal of electric motor 1 when the temperature of electric motor 1 increases and a determination value for allowing an output of the driving signal of electric motor 1 when the temperature of electric motor 1 decreases, the two values can be changed properly.
  • driving switch 20 for use in resuming the driving operation of electric motor 1 manually is provided as shown in Fig. 4. If the temperature of electric motor 1 is reduced down to or below the second predetermined temperature value after electric motor 1 is stopped because its temperature increases up to or over the first predetermined value, it is possible to resume an output of a driving signal of electric motor 1 from motor controller 5 by manipulating driving switch 20. Thus, by using driving switch 20, unprepared rotation of electric motor 1 can be prevented when the temperature of electric motor 1 is reduced, and, also, a normal cleaning operation can be resumed by operating driving switch 20 at a point in time when the temperature of electric motor 1 falls below the second predetermined temperature value.
  • the vacuum cleaner in accordance with the present invention has merits in that it can be fabricated at a low cost and there is little limit in the number of wirings therein. Furthermore, it can detect the stoppage of the electric motor accurately, thus providing improved safety and user convenience. Therefore, the present invention has advantages when it is applied to various vacuum cleaners or dust collectors for use in household and commercial environments.
  • the rotational state of the electric motor can be detected at a low cost to secure a high level of safety readiness and it is possible to securely control the rotation of the electric motor when, e.g., the electric motor is abnormally overheated or the vacuum cleaner is not in a cleaning state. Moreover, it is possible to properly setting the stop temperature and the drive temperature of the electric motor to prevent the electric motor from being overloaded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)
  • Control Of Electric Motors In General (AREA)
EP05024573A 2004-11-12 2005-11-10 Aspirateur avec sécurité thermique du moteur Expired - Lifetime EP1656874B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004328752A JP2006136512A (ja) 2004-11-12 2004-11-12 電気掃除機

Publications (3)

Publication Number Publication Date
EP1656874A2 true EP1656874A2 (fr) 2006-05-17
EP1656874A3 EP1656874A3 (fr) 2007-04-18
EP1656874B1 EP1656874B1 (fr) 2009-04-01

Family

ID=35717663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05024573A Expired - Lifetime EP1656874B1 (fr) 2004-11-12 2005-11-10 Aspirateur avec sécurité thermique du moteur

Country Status (7)

Country Link
US (1) US20060101605A1 (fr)
EP (1) EP1656874B1 (fr)
JP (1) JP2006136512A (fr)
CN (1) CN100344254C (fr)
AT (1) ATE427064T1 (fr)
DE (1) DE602005013628D1 (fr)
ES (1) ES2321731T3 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014177171A1 (fr) * 2013-04-29 2014-11-06 Aktiebolaget Electrolux Buse destinée à un aspirateur et aspirateur
EP3241476A1 (fr) * 2016-05-03 2017-11-08 Koninklijke Philips N.V. Aspirateur
CN109106287A (zh) * 2018-09-17 2019-01-01 珠海格力电器股份有限公司 吸尘设备及其控制装置及方法
EP2062517B1 (fr) * 2006-09-11 2019-12-11 Panasonic Corporation Appareil de nettoyage électrique
WO2020163336A1 (fr) * 2019-02-06 2020-08-13 Techtronic Cordless Gp Système de nettoyage comprenant un système pour empêcher le moteur de surchauffer et un procédé associé
EP4252606A1 (fr) * 2022-03-30 2023-10-04 Miele & Cie. KG Aspirateur, de préférence aspirateur à main

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7321213B2 (en) * 2005-07-20 2008-01-22 Asmo Co., Ltd. Motor controller
JP4818847B2 (ja) * 2005-11-07 2011-11-16 アスモ株式会社 モータ制御装置
JP5677064B2 (ja) * 2010-12-10 2015-02-25 株式会社東芝 電気掃除機
WO2018099543A1 (fr) * 2016-11-30 2018-06-07 Alfred Kärcher Gmbh & Co. Kg Brosse de balayage
CN109276184B (zh) * 2017-07-21 2022-03-29 添可电器有限公司 手持式吸尘器及其控制方法
JP7123690B2 (ja) * 2018-08-08 2022-08-23 東芝ライフスタイル株式会社 電気掃除機
US11672390B2 (en) 2019-11-13 2023-06-13 Emerson Electric Co. Vacuum cleaner motor assemblies and methods of operating same
CA3233854A1 (fr) 2021-04-23 2022-10-27 Fariha AHMED Appareil de nettoyage a la vapeur

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6351872B1 (en) 1999-07-16 2002-03-05 Matsushita Electric Corporation Of America Agitator motor projection system for vacuum cleaner

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US2323554A (en) * 1941-04-19 1943-07-06 Richard D Mason Vacuum cleaning apparatus
US5530987A (en) * 1992-07-24 1996-07-02 The Babcock & Wilcox Company Condensate drain controller
US6085382A (en) * 1997-01-10 2000-07-11 White Consolidated Industries, Inc. Air filtrating self-propelled upright vacuum cleaner
JPH10276947A (ja) * 1997-04-10 1998-10-20 Matsushita Electric Ind Co Ltd 電気掃除機
KR100384980B1 (ko) * 1998-04-03 2003-06-02 마츠시타 덴끼 산교 가부시키가이샤 회전 브러시 장치 및 이를 이용한 전기 기구
JP2000316768A (ja) * 1999-05-10 2000-11-21 Matsushita Electric Ind Co Ltd 電気掃除機
US6533611B2 (en) * 2000-10-03 2003-03-18 Delphi Technologies, Inc. Electrical connector assembly with secondary terminal lock
US20020152576A1 (en) * 2001-04-20 2002-10-24 Pro-Team, Inc. An Idaho Corporation Method and apparatus for improved use, maintenance and management of floor maintenance equipment
JP2003164399A (ja) * 2001-11-30 2003-06-10 Matsushita Electric Ind Co Ltd 電気掃除機
CN1299423C (zh) * 2001-12-25 2007-02-07 乐金电子(天津)电器有限公司 带有预防过热装置安装结构的真空吸尘器用电机
US7640621B2 (en) * 2004-04-26 2010-01-05 Panasonic Corporation Of North America Thermal protection system for electrical appliance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6351872B1 (en) 1999-07-16 2002-03-05 Matsushita Electric Corporation Of America Agitator motor projection system for vacuum cleaner

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2062517B1 (fr) * 2006-09-11 2019-12-11 Panasonic Corporation Appareil de nettoyage électrique
WO2014177171A1 (fr) * 2013-04-29 2014-11-06 Aktiebolaget Electrolux Buse destinée à un aspirateur et aspirateur
EP3241476A1 (fr) * 2016-05-03 2017-11-08 Koninklijke Philips N.V. Aspirateur
CN109106287A (zh) * 2018-09-17 2019-01-01 珠海格力电器股份有限公司 吸尘设备及其控制装置及方法
WO2020163336A1 (fr) * 2019-02-06 2020-08-13 Techtronic Cordless Gp Système de nettoyage comprenant un système pour empêcher le moteur de surchauffer et un procédé associé
CN113613537A (zh) * 2019-02-06 2021-11-05 创科无线普通合伙 包括用于防止马达过热的系统的清洁系统及其方法
EP4252606A1 (fr) * 2022-03-30 2023-10-04 Miele & Cie. KG Aspirateur, de préférence aspirateur à main

Also Published As

Publication number Publication date
DE602005013628D1 (de) 2009-05-14
ATE427064T1 (de) 2009-04-15
CN100344254C (zh) 2007-10-24
ES2321731T3 (es) 2009-06-10
CN1771878A (zh) 2006-05-17
EP1656874B1 (fr) 2009-04-01
JP2006136512A (ja) 2006-06-01
US20060101605A1 (en) 2006-05-18
EP1656874A3 (fr) 2007-04-18

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