EP0458057A1 - Verfahren zum Betreiben eines Staubsaugers - Google Patents

Verfahren zum Betreiben eines Staubsaugers Download PDF

Info

Publication number
EP0458057A1
EP0458057A1 EP91105964A EP91105964A EP0458057A1 EP 0458057 A1 EP0458057 A1 EP 0458057A1 EP 91105964 A EP91105964 A EP 91105964A EP 91105964 A EP91105964 A EP 91105964A EP 0458057 A1 EP0458057 A1 EP 0458057A1
Authority
EP
European Patent Office
Prior art keywords
vacuum cleaner
motor
nozzle
cleaned
fan 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.)
Granted
Application number
EP91105964A
Other languages
English (en)
French (fr)
Other versions
EP0458057B1 (de
Inventor
Haruo Koharagi
Kazuo Tahara
Toshiyuki Ajima
Takeshi Abe
Tsunehiro Endo
Kunio Miyashita
Yoshitaro Ishii
Fumio Jyoraku
Hisao Suka
Atusi Hosokawa
Hisanori Toyoshima
Mitsuhisa Kawamata
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.)
Hitachi Ltd
Original Assignee
Hitachi 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
Priority claimed from JP2097666A external-priority patent/JP2523930B2/ja
Priority claimed from JP2100319A external-priority patent/JP2865795B2/ja
Priority claimed from JP2100320A external-priority patent/JP2539532B2/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of EP0458057A1 publication Critical patent/EP0458057A1/de
Application granted granted Critical
Publication of EP0458057B1 publication Critical patent/EP0458057B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • A47L9/2805—Parameters or conditions being sensed
    • A47L9/2821—Pressure, vacuum level or airflow
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2805—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
    • A47L9/2836—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 present invention relates to a vacuum cleaner and more particularly to a vacuum cleaner having a power brush suction nozzle body in which the vacuum cleaner can be operated at the most optimum condition in response to a kind of a being surface to be cleaned and also a kind of a suction nozzle member.
  • the vacuum cleaner comprises a vacuum cleaner main body and a power brush suction nozzle body having a rotary brush and being attached to the vacuum cleaner main body.
  • the vacuum cleaner main body has a fan motor and the power brush suction nozzle body has a nozzle motor.
  • the present invention relates to a vacuum cleaner having a control apparatus for a driving source of a vacuum cleaner main body and more particularly to a vacuum cleaner having a control apparatus for a fan motor such as a brushless motor being mounted on a vacuum cleaner main body.
  • the suction nozzle member comprises a suction nozzle member for use in a general, a suction nozzle member for use in a shelf and a suction nozzle member for use in a crevice.
  • the power for the power brush suction nozzle body is cut-off, the power brush suction nozzle body is used similar to as the general use suction nozzle member.
  • the kind of the general use suction nozzle member including the case of the power for the power brush suction nozzle body being cut-off, the shelf use suction nozzle member and the crevice use suction nozzle member is judged according to the utilization of a static pressure of the vacuum cleaner.
  • the power brush suction nozzle body is operated by judging the utilization of a fluctuation width of a current in the nozzle motor of the power brush suction nozzle body.
  • the cleaning surface to be cleaned is detected in accordance with a variation a current which flows into a nozzle motor provided in a power brush suction nozzle body, and as a basis of this result an input of a fan motor is controlled.
  • a voltage applied to AC commutator motor is adjusted by the triac, according to the cleaning surface to be cleaned or a detected value through the pressure sensor or the wind amount sensor, a power for the vacuum cleaner is controlled.
  • An object of the present invention is to provide a vacuum cleaner wherein the most suitable suction force for the vacuum cleaner can be obtained automatically in response to a cleaning surface to be cleaned.
  • Another object of the present invention is to provide a vacuum cleaner wherein the most suitable rotation speed for a rotary brush provided on a power brush suction nozzle body of the vacuum cleaner can be obtained automatically in response to a cleaning surface to be cleaned.
  • a further object of the present invention is to provide a vacuum cleaner wherein a kind of a suction nozzle member can be discriminated automatically and thereby the most suitable suction force for the vacuum cleaner can be obtained automatically in response to kind of a cleaning surface to be cleaned and a kind of a suction nozzle member.
  • a further object of the present invention is to provide a vacuum cleaner wherein various factors indicating a load condition of a fan motor of a vacuum cleaner main body such as a wind amount and a static pressure can be detected without any sensor mean and thereby an optimum operation for the vacuum cleaner can be obtained according to the detected factors indicating the load condition of the fan motor.
  • a further object of the present invention is to provide a vacuum cleaner wherein the most suitable suction force for the vacuum cleaner can be obtained automatically in response to a cleaning surface to be cleaned even in a case of the cleaning surface to be cleaned is a tatami.
  • the vacuum cleaner in a vacuum cleaner having a filter for catching dusts, a variable speed fan motor for giving a suction force to a vacuum cleaner, a pressure sensor provided within a vacuum cleaner main body and for detecting a clogging degree rate of the filter, and a circuit provided within the vacuum cleaner main body and for detecting a current of a rotary brush driving nozzle motor received in a power brush suction nozzle body, the vacuum cleaner is characterized in that, during a cleaning operation, using at least one selected from a fluctuation width of a peak value in the current of the nozzle motor and a fluctuation width of an output value of the pressure sensor a kind of a cleaning surface to be cleaned is estimated, using a rotation speed and a load current of the fan motor or an output of the pressure sensor and a rotation information about the fan motor a wind amount being flown into from a suction nozzle member is estimated, using the wind amount, a mean value of the output value of the pressure sensor and the current of the nozzle motor a kind of the
  • the another cleaning surface to be cleaned can be estimated accurately.
  • This cleaning surface to be cleaned estimation is carried out also in accordance with the size of the fluctuation of the static pressure being the output of the pressure sensor.
  • the suction nozzle in use can classify the power brush suction nozzle or the other suction nozzle whether or not the current of the nozzle motor flows. Since the static pressure against the operation wind amount differs in each suction nozzle, the suction nozzle in use can be estimated by the static pressure at the operation wind amount.
  • the rotation speed of the rotary brush is set at the optimum condition and further in response to the cleaning surface to be cleaned and the suction nozzle in use the fan motor is operated with the wind amount constant control, the static pressure constant control and the rotation speed, therefore the vacuum cleaner having the most suitable suction force can be obtained in response to the cleaning surface to be cleaned.
  • the vacuum cleaner in a vacuum cleaner having a filter for catching dusts and a variable-speed fan motor for generating a dust suction force, the vacuum cleaner is characterized of providing a control apparatus in which in accordance with a current command and a speed command of the fan motor a wind amount or a static pressure being one of various factors for indicating a load condition of the vacuum cleaner is calculated, and in accordance with this calculation result of the wind amount or the static pressure the speed command of the fan motor is determined.
  • the wind amount and the static pressure are calculated in accordance with the load current and the rotation speed of the fan motor and under a result of a speed command of the fan motor is determined, thereby without the pressure sensor or the wind amount sensor the most suitable suction force can be obtained in response to the load condition.
  • a vacuum cleaner comprising a vacuum cleaner main body, a fan motor installed in the vacuum cleaner main body, a power brush suction nozzle body communicated to the vacuum cleaner main body and for contacting to a cleaning surface to be cleaned, a rotary brush installed in the power brush suction nozzle body, and a nozzle motor for driving the rotary brush, a filter for catching dusts in accordance with a rotation of the fan motor, the vacuum cleaner characterized an input adjusting means detects at least one of a mean value of a peak value and a fluctuation width of the peak value in a current flowing into the nozzle motor and adjusts automatically an input of the fan motor through the detection.
  • the rotary brush Since the rotary brush contacts directly to the cleaning surface to be cleaned, during the cleaning operation, it causes the variation in the current of the nozzle motor for driving the rotary brush. Further, the fluctuation width of the peak value in the current of the nozzle motor can vary largely in response to the cleaning surface to be cleaned.
  • the suction force suitable for the cleaning surface to be cleaned can be obtained.
  • the cleaning surface to be cleaned can be judged accurately.
  • a variable speed motor is described assuming a fan motor as a driving source of a vacuum cleaner.
  • variable speed fan motor it is conceivable an AC commutator motor in which speed is varied by controlling an input, a phase control motor, an inverter-driven induction motor, a reactance motor, or a brushless motor.
  • a brushless motor employed as the fan motor will be explained, such a brushless motor has a long life because that it has no brush being accompanied with a mechanical slide, and also the brushless motor has a good control responsibility.
  • a nozzle motor for driving a rotary brush being mounted on a a power brush suction nozzle body is described assuming the nozzle motor.
  • the nozzle motor it is conceivable a DC magnet motor or an AC commutator motor.
  • an example of the employment of a rectifying circuit built-in type DC magnet motor for the nozzle motor will be explained.
  • Fig. 1 is a block diagram showing a schematic construction of a control circuit
  • Fig. 2 shows a whole construction of the control circuit.
  • 16 indicates an inverter control apparatus.
  • 29 indicates an AC power source, the current from AC power source 29 is rectified in a rectifying circuit 21, and smoothed in a condenser 22 and further supplied to a DC voltage E d to an inverter circuit 20.
  • the inverter circuit 20 constitutes a 120° conductive type inverter comprising transistors TR1-TR6 and circulating diodes D1-D6 being connected in parallel to a respective transistor TR1-TR6.
  • the transistors TR1-TR3 constitute positive arms.
  • the transistors TR4-TR6 constitute negative arms.
  • Each of period is pulse-width moderated (PWM) with an electric angle of 120°.
  • R1 indicates a resistor having a comparative lower value which is connected to between an emitter side of the transistor TR4-TR6 constituting the negative arms and a minus side of the condenser 22.
  • FM indicates a brushless motor for driving a fan (hereinafter called "fan motor"), and this fan motor FM has a rotor R comprised of a double pole permanent magnet and armature windings U, V and W.
  • a load current I D flowing into the winding U, V or W is detected as a drop in voltage of the above resistor R1.
  • a speed control circuit of the fan motor FM is constituted mainly of a magnet pole position detecting circuit 18 being detected by a Hall element 17 etc., a fan motor current detecting circuit 23 which detects the above load current I D and amplifies it, a base driver 15 for driving the above transistors TR1-TR6, and a microcomputer 19 for driving the base driver 15 in accordance with a detected signal 18S which is obtained from the above detecting circuit 18.
  • 30 indicates an operation switch which is operated by an actual operator.
  • 26 indicates a nozzle motor for driving a rotary brush which is provided in a power brush suction nozzle body side of a vacuum cleaner, and it is supplied an electric power according to a phase-controlling AC power source 29 by a triac (FLS) 25.
  • 24 indicates a gate circuit of the triacs
  • 27 indicates a current detector of a load current I N flowing to the nozzle motor
  • 28 indicates a nozzle motor current detector for detecting and amplifying an output signal of the current detector 27.
  • the magnetic pole position detecting circuit 18 receives from a signal from the Hall element 17 and the rotor R generates the magnetic pole position signal 18S.
  • This magnetic pole position signal 18S is used for the current switching of the armature windings U, V and W also used as a signal for detecting a rotation speed of the fan motor FM.
  • the microcomputer 19 requests the speed by counting a number of the magnetic pole position signal 18S within a predetermined sampling.
  • the detecting circuit 23 for the load current I D of the fan motor FM obtains the load current I D of the fan motor FM by converting and amplifying the drop in voltage of the resistor R1 to a DC component through a peak hold circuit.
  • the detecting circuit 28 for the load current I N of the nozzle motor 26 (in which the rectifying circuit is built-in) obtains the load current I N of the nozzle motor 26 by rectifying it and converting and amplifying an output signal of the current detector 27 to a DC component, because the output signal of the current detector 27 is the alternative current.
  • the microcomputer 19 includes a central processing unit (CPU) 19-1, a read only memory (ROM) 19-2 and a random access memory (RAM) 19-3, and these are connected to each other by an address bass, a data bass and a control bass which are not shown.
  • CPU central processing unit
  • ROM read only memory
  • RAM random access memory
  • ROM 19-2 programmings necessary for driving the fan motor FM are stored, for example, which are an calculation processing of a speed, a take-in processing of an operation command, a speed control processing (ASR), a current control processing (ACR), a current detecting processing of the nozzle motor 26, a current detecting processing of the fan motor FM and a static pressure detecting processing etc..
  • RAM 19-3 is used for reading and writing various outside data for practising the various programmings stored in the above ROM 19-2.
  • the transistors TR1-TR6 are driven respectively by the base driver 15 in response to the gate signal 19S which is processed and generated in the microcomputer 19.
  • the triac 25 is driven by the switching circuit 24 responding to the gate signal 19S which is processed and generated in the microcomputer 19 in accordance with a zero-cross detecting circuit 32 of AC power source 29.
  • a static pressure detecting circuit 31 converts the output of a pressure sensor 8 provided in the vacuum cleaner main body to a static pressure.
  • the output torque can be made variable by varying the supply current. Namely, by adjusting the supply current, the output torque of the fan motor FM can vary continuously and voluntarily. Further, according to changing a driving frequency of the inverter, the rotation speed of the fan motor FM can be varied freely.
  • the above stated brushless type fan motor FM is used.
  • Fig. 3 shows a whole construction of the vacuum cleaner and Fig. 4 shows an interior construction of the power brush suction nozzle body, respectively.
  • 1 indicates a cleaning surface to be cleaned
  • 2 a vacuum cleaner main body
  • 3 a hose
  • 4 a handy switching portion
  • 5 an extension pipe
  • 6 a rotary brush built-in type power brush suction nozzle body
  • 7 a filter
  • 8 the pressure sensor (a semiconductor pressure sensor) for detecting a clogging degree rate of the filter 7, respectively.
  • a rotary brush 10 and brushes 11 attached to the rotary brush 10. 12 indicates a timing belt for transmitting a drive force of the nozzle motor 26 to the rotary brush 10. 13 indicates a suction extension pipe and 14 indicates rollers.
  • a power source lead line 9 of the nozzle motor 26 is connected to a power source line 5A provided on the extension pipe 5.
  • the rotary brush 10 rotates through the timing belt 12.
  • the power brush suction nozzle body 6 contacts to the cleaning surface 1 to be cleaned. Since the brushes 11 are attached to the rotary brush 10, the brushes 11 contact to the cleaning surface 1 to be cleaned, thereby the load current I N of the nozzle motor 26 becomes large.
  • Fig. 5 is a zero-cross detecting circuitry for phase-controlling of the nozzle motor 26 and Fig. 6 shows an electric power waveform and a current waveform applied to the nozzle motor 26, respectively.
  • a zero-cross signal 32S shown in Fig. 6B is obtained through the zero-cross detecting circuit 32 which comprises a resistor R2, a diode D7, a photo-coupler PS and a resistor R3.
  • the microcomputer 19 works to operates a count timer shown in Fig. 6C which is synchronized with the first transition and the last transition of the zero-cross signal 32S. When the count timer becomes zero, a gate signal 19D is outputted from the microcomputer 19 to FLS 25.
  • the load current I N shown in Fig. 6A flows into the nozzle motor 26, by the phase control the rotation speed of the nozzle motor 26, in other words, the input is controlled.
  • Figs. 7A - 7C shows a detecting circuit construction of the nozzle motor 26 and an example of the output thereof.
  • a DC voltage signal V DP is obtained through a full wave rectification amplifying circuit 28, a diode D10 and a peak hold circuit 28B. During the suction nozzle operation this output signal V DP varies between V MX and V MN as shown in Fig. 7A.
  • a voltage (V MX - V MN ) is made as a fluctuation width V MB of the detected voltage.
  • Fig. 8 is a measurement result of a low speed rotation state of the nozzle motor 26 showing the fluctuation width V MB of the detected voltage corresponding to the variation of the load current I N of the nozzle motor 26 during the suction nozzle operation in response to the cleaning surface 1 to be cleaned.
  • the rotation speed of the fan motor FM becomes large from the rotation speed (1) to the rotation speed (3) in turn, in other words, the suction force becomes large in turn.
  • carpets from a carpet (1) to a carpet (6) indicate lengths of the carpet downs and are made longer in turn.
  • Fig. 8 it may be considered whether or not the kind of the cleaning surface 1 to be cleaned can estimate in accordance with the fluctuation width V MB of the detected voltage.
  • the fluctuation width V MB is zero in case of the floor and becomes large the tatami normal order, the tatami reverse order and the carpet in turn.
  • the fluctuation width of the tatami reverse order is large that of the carpet (2).
  • the fluctuation widths of the carpet (2) and the carpet (3) become similar to. Therefore, it is impossible to estimate the kind of the cleaning surface to be cleaned in accordance with merely the size of the fluctuation width V MB .
  • the increasing rate A of the tatami reserve order is smaller than the increasing rate B of the carpet (2).
  • the nozzle motor 26 rotates at a low speed at the start, in accordance with the size of the increasing rate between the fluctuation width V MB of the detected voltage and the increasing rate between of the rotation speed (1) and the rotation speed (2), it can distinguish or estimate the floor, the tatami, the carpet (1), the carpet (2) or the carpet (3) of the cleaning surface to be cleaned.
  • Fig. 9 is a measurement result of a high speed rotation state of the nozzle motor 26 showing the fluctuation width V MB of the detected voltage corresponding to the variation of the load current I N of the nozzle motor 26 during the suction nozzle operation in response to the cleaning surface to be cleaned.
  • the rotation speed of the rotary brush 10 is made less than 1200 rpm, so that it has the aims for no injury about the cleaning surface to be cleaned during the tatami and the floor and reduction in the noise.
  • the rotation speed of the rotary brush 10 is made more than 2400 rpm, so that it can cope with the case of the carpet (the case may include the tatami).
  • both the nozzle motor 26 and the fan motor FM are made low speed rotation, and when the suction nozzle operation is detected, the initial estimation of the cleaning surface to be cleaned is performed in accordance with the fluctuation width V MB of the detected voltage between the rotation speed (1) and the rotation speed (2) of the fan motor FM.
  • the cleaning surface to be cleaned estimation makes the nozzle motor 26 at high speed rotation, the estimation of the cleaning surface to be cleaned is performed in accordance with the fluctuation width V MB of the detected voltage.
  • the inputs of the fan motor FM and the nozzle motor 26 are controlled automatically.
  • the cleaning surface to be cleaned estimation in accordance with the fluctuation width of the detected voltage which is a peak current value of the nozzle motor 26 is described in the above, next a method for the cleaning surface to be cleaned estimation (judgment) in accordance with the output of the pressure sensor provided in the vacuum cleaner main body will be explained.
  • Fig. 10 is a measurement result showing the fluctuation width H MB of the static pressure (the fluctuation width of the detected voltage corresponding to the static pressure) in response to the cleaning surface to be cleaned against the rotation speed of the fan motor FM.
  • the fluctuation width H MB of the static pressure has the largest value in comparison with that of the tatami. Accordingly, it is impossible to distinct the kind of the cleaning surface to be cleaned by the size of the fluctuation width H MB of the static pressure, because of the exsitence of the tatami reverse order.
  • the cleaning surface to be cleaned is estimated in accordance with the fluctuation width H MB of the static pressure, it make to standardize the fluctuation width H MB of the static pressure during the suction nozzle operation at the rotation speed (1). And further, at the rotation speeds (2) and (3) more than the rotation speed (1), the fluctuation width H MB at of the tatami normal order is made as the threshold value.
  • Fig. 11 shows an operation mode of the fan motor FM.
  • the suction force p o of the vacuum cleaner is shown in the following formula and it is proportion to the product of the wind amount Q and the static pressure H. P o ⁇ Q ⁇ H (W)
  • the constant wind amount Q makes always sure of the necessary minimum wind amount and static pressure of the suction nozzle portion.
  • the static pressure becomes large in response to the clogging degree rate of the filter 7 (the rotation speed is made large in response to the clogging degree rate of the filter 7 and the constant wind amount Q is made constant, inversely the clogging degree rate can estimate according to the size of the static pressure).
  • the constant static pressure H can mitigate the adhesion between the cleaning surface to be cleaned and the suction nozzle portion. For example, even the foreign matters attach to the suction nozzle, since the static pressure can rise as far as some degree, it is difficult to remove the foreign matters.
  • the control values of the constant wind amount Q and the constant static pressure H are varied in response to the cleaning surface to be cleaned.
  • the wind amounts Q1-Q5 and the static pressures H1-H5 correspond respectively to the cleaning surface to be cleaned, the carpet (1), the carpets (2) and (3) and the carpet (4) of the above stated cleaning surface to be cleaned estimation measurement results in accordance with the fluctuation widths of the peak values in the current of the nozzle motor 26 and the suction force is made large in order.
  • the constant wind amount Q and the constant static pressure H can set to be Q2, H2 and Q4, H4 in Fig. 11 respectively.
  • the static pressure H it can employ the output of the pressure sensor 8, however with respect to the wind amount Q it is requested in accordance with the calculation.
  • it is suitable to adopt methods that use of the current and the rotation speed of the fan motor FM or use of the static pressure and the rotation speed of the fan motor FM, it is not limited to the rotation speed itself but it may adopt an information corresponding to the rotation speed.
  • Fig. 12 is a measurement result showing a relation between the wind amount and the static pressure about the suction nozzle for crevice use, the suction nozzle for shelf use and the suction nozzle for general use, each of suction nozzle members is a representative one.
  • the power brush suction nozzle body is included.
  • the distinction between the power brush suction nozzle body and other suction nozzles is performed as following.
  • step 1 When the operation switch 30 becomes "on" condition, an operation command take-in processing and a starting processing (processing 7) are carried out, and the rotation speed of the fan motor FM is risen up to the rotation speed (1) of a standby state.
  • step 2 The rotation speed N is calculated in accordance with the receipt of the signal 18S from the magnetic pole position detecting circuit 18 (processing 1), the wind amount Q is calculated in accordance with the calculation of the current command I* (correspond to the load current) of the fan motor FM (processing 12).
  • a static pressure detecting processing (processing 13) is carried out and thereby the static pressure H is detected.
  • the nozzle motor 26 receives the signal from the zero-cross detecting circuit 32 and to which the instantaneous current is applied, and in accordance with the receipt of the signal 24S from the nozzle motor current detecting circuit 24, thereby the nozzle motor current detecting processing (processing 2) is carried out.
  • suction nozzle judgment processing when the nozzle motor current is detected it is judged as the power brush suction nozzle body, and when the current is not detected it is judged as other suction nozzle.
  • step 3 A clogging degree rate detecting processing of the filter 7 (processing 5) is carried out in accordance with the relation between the static pressure H against the wind amount Q, and thereby the clogging degree rate of the filter 7 is detected.
  • step 4 In the suction nozzle judgment (processing 4), when it is the power brush suction nozzle body, the nozzle motor 26 is driven (at low rotation speed) through the zero-cross detecting circuit 32, a phase control angle setting processing (processing 8) and a gate signal processing (processing 9), and thereby at the time of the suction nozzle operation period the fluctuation width of the peak value in the current of the nozzle motor 26, the fluctuation width of the static pressure H and the clogging degree rate of the filter 7 are detected.
  • step 5 At the stage in which the first time cleaning surface to be cleaned estimation is finished, the fan motor 26 is risen up to the rotation speed (2), and the cleaning surface to be cleaned estimation (processing 4) is carried out under the consideration of the increasing rate between the fluctuation width of the peak value in the current of the nozzle motor 26 and the rotation speed (1), the increasing rate between the fluctuation width of the static pressure H and the rotation speed (1), and the clogging degree rate of the filter 7.
  • step 6 In accordance with the result of the cleaning surface to be cleaned estimation (processing 4) in the step 4, in an adaptive control model 19A, the wind amount (Q1-Q5), the static pressure (H1-H5) and the rotation speed N are set respectively and by changing-over these values a speed command N* is outputted.
  • the fan motor current detecting processing (processing 3) is carried out and the load current I D of the fan motor FM is detected.
  • a current command I* are outputted from the processing 11 of the speed control processing (ASR) and the current control processing (ACR).
  • a base driver signal 19S is outputted and thereby the fan motor FM is controlled at a desired rotation speed.
  • step 7 Simultaneously, in accordance with the result of the cleaning surface to be cleaned estimation (processing 4), by receiving the signal from the zero-cross detecting circuit 32 the gate angle is determined in the gate signal generating processing (processing 9).
  • the gate signal 19A of FLS 25 for the nozzle motor 26 is outputted through the gate signal generating processing (processing 9) and the nozzle motor 26 is controlled at a desired rotation speed.
  • step 8 When the result of the cleaning surface to be cleaned estimation (processing 4) is the floor, the nozzle motor 26 is rotated at a slow rotation speed. And utilizing the data of two rotation speeds comprising of the rotation speed (1) of the fan motor FM and the actual rotation speed, this method for the cleaning surface to be cleaned estimation of the step 5 is carried out repeatedly.
  • step 9 When the result of the cleaning surface to be cleaned estimation (processing 4) is the tatami or the carpet, the nozzle motor 26 is rotated at a high rotation speed.
  • step 10 In the suction nozzle judging processing (processing 4) in the step 2, when it is judged as the general use suction nozzle, as under the standard of the rotation speed (1) of the fan motor FM, and taking into the consideration of the increasing rate between the fluctuation width of the static pressure H under the actual rotation speed and the fluctuation width of the static pressure H under the rotation speed (1) and the clogging degree rate of the filter 7, the cleaning surface cleaned is distinguished or estimated as the kind comprising of the floor and the tatami or as the kind of comprising the carpet.
  • step 11 When the cleaning surface to be cleaned is estimated as the kind comprising of the floor and the tatami in the step 10, in the adaptive control model 19A, for example, the speed command N* is outputted corresponding to the wind amount Q2, the static pressure H2 and the rotation speed N.
  • step 12 When the cleaning surface to be cleaned is estimated as the kind comprising of the carpet in the step 10, in the adaptive control model 19A, for example, the speed command N* is outputted corresponding to the wind amount Q2, the static pressure H2 and the rotation speed N.
  • step 13 In the suction nozzle judging processing (processing 14) in the step 2, when it is judged as the shelf use suction nozzle or the crevice use suction nozzle, in the adaptive control model 19A, the speed command N* is outputted corresponding to one wind amount Q and one static pressure H or the speed command N* is outputted corresponding to two wind amounts Q and two static pressures H.
  • the rotary brush 10 rotates at the low rotation speed, however it may step the rotation of the rotary brush 10 and may rotate again according to the size of the fluctuation width of the static pressure H.
  • the microcomputer 19 may install the driving soft for the fan motor FM or the driving soft for the fan motor FM and the nozzle motor 26, and it may install the soft for the suction nozzle estimation and the cleaning surface to be cleaned estimation in another microcomputer.
  • the rotation speed and the load current are adopted, however it may adopt the static pressure and the rotation information (for example, the phase control angle in a case that employment of AC commutator motor as the fan motor FM).
  • the clogging degree rate of the filter 7, the kind of the suction nozzle in use and the kind of the cleaning surface to be cleaned are detected automatically and in accordance with this detection the fan motor FM and the nozzle motor 26, thereby the vacuum cleaner having a good clogging degree rate of the filter 7, the suction nozzle in use and the most suitable suction port according to the cleaning surface to be cleaned can be obtained automatically.
  • FIG. 13 is a schematic construction showing a fan motor for use in the vacuum cleaner according to one embodiment of the present invention.
  • a fan motor comprises a variable speed motor 38 and a fan 39, by receiving a signal 41S from a speed detector 41 and a signal 42S from a current detector 42, a rotation speed and a load current are detected in a control apparatus 40.
  • a control apparatus for controlling the variable speed motor 38 calculates various factor indicating a load condition from the rotation speed and the load current, for example a wind amount Q and a static pressure H, and under the calculation result the fan motor 38 is operated.
  • the fan motor 38 there are considered the uses for an electric fan, a blower for cooling or a vacuum cleaner etc.. In this embodiment, it will be explained as an example about the fan motor for use in the vacuum cleaner in which an operation condition is varied according to the load condition.
  • Fig. 14 is a block diagram showing a schematic construction of the control circuit
  • Fig. 15 is a whole construction of the control circuit.
  • 16 indicates an inverter control apparatus for variable speed operation of a brushless motor 17.
  • 29 indicates an AC power source, this power source 29 is rectified by a rectifying circuit 21 and smoothed in a condenser 22 and a DC voltage E d is supplied to an inverter circuit 20.
  • this kind brushless motor 17 since the current flowing into the armature windings U, V and W corresponds to an output torque of the motor 17, inversely the output torque can be varied according to varying the applied current. Namely, by adjusting the applied current the output torque of the motor 17 can be varied continuously and voluntarily, and by varying the drive frequency of the inverter the rotation speed of the motor 17 can be varied voluntarily. In the vacuum cleaner of the present invention, this kind brushless motor 17 can adopt.
  • Fig. 16 shows a Q-H characteristic of the vacuum cleaner using the brushless motor 17, the wind amount Q is shown in the horizontal axis and the static pressure H and the load torque T of the fan (the fan of the blower motor in the vacuum cleaner) are shown in the vertical axis.
  • L is a shaft input (W) of the fan
  • Q is the wind amount (m3/min)
  • H is the static pressure (mmAq)
  • N F is the rotation speed of the fan
  • D is the diameter (mm) of the runner of the fan. Since the fan and the brushless motor 17 are coupled directly, it is considered that the shaft input L and the rotation speed N F of the fan are equal to the output P and the rotation speed N of the brushless motor 17, respectively.
  • the above formula (4) is transformed to the next formula according to the above formula (5) and the above stated formula (6).
  • P is the output (W) of the brushless motor 17 and N is the motor rotation speed (rpm).
  • E0 is the induced voltage (V)
  • K ⁇ is the coefficient of the induced voltage
  • I is the load current (A).
  • the wind amount Q is expressed as following by the above formula (7), the above formula (8) and the above formula (9).
  • K is the proportional coefficient.
  • This proportional coefficient K includes many error factors such as the blower efficiency, the motor efficiency, the air leakage from the vacuum cleaner main body and the unit volume weight variety of air due to temperature, however in this case it takes constant.
  • Fig. 17 shows the wind amount Q at the horizontal axis and the ratio (rotation speed / load current) of the rotation speed N and the load current I of the brushless motor 17 at the vertical axis.
  • the wind amount Q is calculated from the value of the rotation speed / the load current.
  • Fig. 18 is a H-N characteristic for each of the wind amounts Q1-Q4 in a case that the static pressure H is shown at the horizontal axis and the rotation speed N is shown at the vertical axis. From this figure, the static pressure H is requested in accordance with the relation of the following formula. N ⁇ Q ⁇ (aH + b) (11)
  • a is constant and b is constant.
  • the wind amount Q and the static pressure H for the vacuum cleaner can be calculated in accordance with the load current I and the rotation speed N of the brushless motor 17.
  • Fig. 19 shows the representative operation patterns ( A pattern and B pattern) of the vacuum cleaner.
  • a pattern shows that the wind amount Q A1 constant control is practised at the large wind amount side and, at less than the wind amount Q A1 side the static pressure H A1 constant control, the wind amount Q AB constant control and the static pressure H AB constant control are practised.
  • a pattern assumes the cleaning surface to be cleaned in a case of the tatami, in which the rotation speed is reduced at more than the large wind amount Q A1 and the motor input is squeezed to be the constant wind amount Q A1 and, similar to under less than the small wind amount Q AB the rotation speed is reduced and the motor input is squeezed to be the constant wind amount Q AB .
  • the static pressure H A1 constant control is practised, and under less than the wind amount Q AB and less than the static pressure H AB , the static pressure H AB constant control is practised.
  • the microcomputer 19 When the actual operator operates the operation switch, first of all the microcomputer 19 carries out the operation command take-in processing and the starting processing in the processing 1 and drives the brushless motor 17 to the prescribed rotation speed N1.
  • the changing-over switch S1 selects the speed command N1 during the starting and when the starting is completed the output N CMD of AQR (wind amount regulator) and AHR (static pressure regulator) in the processing is selected.
  • the microcomputer 19 receives the magnetic pole position signal 18S from the magnetic pole position detecting circuit 18 and carries out the gate signal generation processing in the processing 6 and the gate element of the transistors TR1-TR6 is determined.
  • the actual speed of the brushless motor 17 is calculated and in the current detecting processing of the processing 3 by receiving the signal from the current amplifier 23 the load current I L of the brushless motor 17 is detected.
  • the current command I CMD is requested from the deviation ⁇ N between the speed command N* and the actual rotation speed N.
  • the voltage command V* is calculated from the deviation ⁇ I between the current command I CMD and the load current I L .
  • the gate signal generating processing in the processing 6 by receiving the voltage command V* and the magnetic pole position signal 18S the element for gating the transistors TR1-TR6 is determined and a PWM signal 19S for varying the applied voltage is outputted.
  • AQR wind amount regulator
  • AHR static pressure regulator
  • the brushless motor 17 determines the voltage V* and controls through ASR and ACR in the processings 4 and 5.
  • the brushless motor 17 is used as the drive source of the vacuum cleaner, without use of the pressure sensor and the wind amount sensor. Further, the wind amount Q and the static pressure H are calculated in accordance with the load current I L and the rotation speed N of the brushless motor 17, and the wind amount constant control (AQR) and the static pressure constant control (AHR) are operated according to the respective operation pattern, thereby it can control the optimum power for the vacuum cleaner.
  • the wind amount constant control (AQR) and the static pressure constant control (AHR) are operated according to the respective operation pattern, thereby it can control the optimum power for the vacuum cleaner.
  • the calculation for the wind amount Q and the static pressure H is calculated in accordance with the rotation speed and the load current of the brushless motor 17, it may be calculated in accordance with the ratio between the rotation speed and the current command.
  • the calculation values of the wind amount Q and the static pressure H are used for controlling the brushless motor 17, however it may use for indicating the load condition of the vacuum cleaner.
  • the example in the use of the brushless motor 17 as the fan motor for use in the vacuum cleaner is explained, however it may adopt an AC commutator motor.
  • Fig. 20 - Fig. 26 are another embodiment according to the present invention.
  • Fig. 20 is a block diagram showing a schematic construction of a control circuit using a static pressure H together
  • Fig. 21 is a schematic construction of a static pressure detection of the vacuum cleaner.
  • the static pressure H of the vacuum cleaner 31 is detected by a static pressure sensor 32.
  • the static pressure is detected by the static pressure sensor 32 mounted on the vacuum cleaner 31, in the static pressure processing in the processing 8 included in the microcomputer 19 and by receiving a signal 33S from a static pressure amplifier 33, the static pressure H of the vacuum cleaner 31 is detected.
  • the wind amount Q is calculated in accordance with the rotation speed N and the load current I L , and in AHR (static pressure regulator) using the detected static pressure H it may output the speed command N CMD so as to be become a predetermined wind amount Q and a predetermined static pressure H, respectively, for example to be become A pattern and B pattern in Fig. 19.
  • Fig. 22 is a schematic construction of a wind amount detection of the vacuum cleaner
  • Fig. 23 is a schematic construction of a control circuit using a wind amount sensor together.
  • Fig. 23 the following points differ in comparison with Fig. 14.
  • the wind amount of the vacuum cleaner 31 is detected.
  • the wind amount is detected by a wind amount sensor 34 mounted on the vacuum cleaner 31, and in the wind amount processing in the processing 10 included in the microcomputer 19 and by receiving a signal 35S from an wind amount amplifier 35, the wind amount Q of the vacuum cleaner 31 is detected.
  • Fig. 24 is a block diagram showing a schematic construction of a control circuit using a rotation speed N and a DC voltage E d of the brushless motor 17
  • Fig. 25 is a whole construction of the control circuit
  • Fig. 26 is a plotting curve showing a drooping characteristic of DC voltage E d of the brushless motor 17 according to the load current I L in which the load current I L is shown at the horizontal axis and DC voltage E d is shown at the vertical axis.
  • the wind amount Q is calculated in accordance with the load current calculation value calculated from the rotation speed N.
  • AHR static pressure regulator
  • the static pressure H is calculated in accordance with the calculated wind amount Q and the rotation speed N, and it can output the speed command N CMD so as to become a predetermined wind amount Q and a predetermined static pressure H, respectively, for example to be become A pattern and B pattern shown in Fig. 19.
  • the brushless motor 17 as the driving source of the vacuum cleaner 31, and in accordance with use of one of the sensor of the pressure sensor or the static pressure sensor and further the load current I L and the rotation speed N of the brushless motor 17, the wind amount Q or the static pressure H is calculated, and according to the operation pattern and the wind amount constant control (AQR) and the static pressure constant control (AHR) are operated, thereby it can control the optimum power for the vacuum cleaner 31.
  • the wind amount Q or the static pressure H is calculated by the calculation, and according to the operation pattern and the wind amount constant control (AQR) and the static pressure constant control (AHR) are operated, thereby it can control the optimum power for the vacuum cleaner.
  • the various factors for indicating the load condition of the fan motor for use in the vacuum cleaner namely the wind amount Q and the static pressure H are calculated in accordance with the relation between the rotation speed N and the load current I L of the brushless motor 17, under the calculation result since the rotation speed of the fan motor is adjusted, thereby the control apparatus of the fan motor being operable at the optimum power for use in the vacuum cleaner can be obtained.
  • Fig. 29 and Fig. 30 of this embodiment same numeral indicates the same or the substantial corresponding element shown in Fig. 1 and Fig. 2.
  • a function table is used in the processing 6.
  • the pressure sensor 8 and the static pressure detecting circuit 31 shown in Fig. 1 are not mounted on respectively.
  • Figs. 31A and 31B show voltages applied to the nozzle motor 26 and a current waveform.
  • a peak value in the current of the nozzle motor 26 varies largely.
  • the deviation ⁇ I N (I N2 - I N1 ) causes in the nozzle motor current in a case whether or not the suction nozzle contacts against the cleaning surface to be cleaned.
  • Figs. 31A and 31B show a circuit construction of the amplifier and Figs. 32A and 32B show an example of an output of the amplifier.
  • Fig. 31A as an example for the amplifier 28, it comprises an amplifying element 32, a rectifying circuit 31 and a peak hold circuit 33.
  • the operation of this amplifier 28 is as follows. When the nozzle motor current I N flows into the nozzle motor 26, a voltage waveform appears at both ends of the resistor R2, which is connected to a current detector 27, corresponding to the nozzle motor current I N .
  • This voltage waveform is amplified through the amplifying element 32, the peak value of the nozzle motor current I N is converted to the direct current part through the rectifying circuit 31 and the peak hold circuit 33 and is inputted into the microcomputer 19.
  • the output of the peak hold circuit 33 as shown in Figs. 32A and 32B, becomes a direct current voltage V DP corresponding the peak value of the nozzle motor current I N .
  • Fig. 31B shows another embodiment of the amplifier 28, it comprises a whole wave amplifying circuit having two operable amplifiers.
  • the output V DP of this becomes a result similar to that of Fig. 31A.
  • Fig. 34 shows a detected voltage V DP in response to the variation in a load current of the nozzle motor 26 during the power brush suction nozzle body operation.
  • the detected voltage V DP in response to the peak value in the load current I N is varied between V MN and V MX .
  • V MD is mean value between the detected voltages V MN and V MX .
  • Fig. 35 shows a measurement result of the variation in the mean value of the detected voltage V MD in response to the cleaning surface to be cleaned.
  • (1) indicates that the nozzle motor 26 is operated with a whole-wave operation (the voltage rectified the alternative power source 29 with the whole-wave is applied to the nozzle motor 26 and the vacuum cleaner operated with the full power) and the fan motor FM such as a brushless motor is operated with the weak operation
  • (2) indicates that the nozzle motor 26 is operated with the whole-wave operation and the fan motor FM is operated with the strong operation
  • (3) indicates that the nozzle motor 26 is operated with a half-wave operation (the voltage rectified the alternative power source 29 with the half-wave is applied to the nozzle motor 26 and the vacuum cleaner operated with the half power) and the fan motor FM is operated with the weak operation
  • (4) indicates that the nozzle motor 26 is operated with the half-wave operation and the fan motor FM is operated with the strong operation.
  • the mean value V MD of the detected value is made to larger in sequence the floor, the tatami and the carpet.
  • the tatami shows that the suction nozzle is operated in parallel with the rush arranging direction (the tatami normal order) and the tatami shows that the power brush suction nozzle body is operated in orthogonal with the rush arranging direction (the tatami reverse order).
  • Each of the numbers (a)-(c) indicates the length of the downs and it is formed to be longer in sequence from (a) to (c) in the carpet.
  • the cleaning surface to be cleaned is judged only in accordance with the mean value V MD of the detected voltage
  • the mean value V MD varies in accordance with the operation conditions of the nozzle motor 26 and the fan motor FM
  • the mean value V MD is substantially same in the case of the tatami of the tatami reverse order surface and in the case of the carpet, and further the mean value V MD does not vary corresponding to the length of the downs of the carpet.
  • Fig. 36 shows a measurement result of the variation of the fluctuation width V MB (V MX - V MN ) of the detected voltage in response to the cleaning surface to be cleaned, in which the numbers (1)-(4) are same conditions shown in Fig. 35.
  • the fluctuation width V MB of the detected voltage is not affected the operation conditions of the nozzle motor 26 and the fan motor FM. In the case of the no load, the fluctuation width V MB of the detected voltage becomes zero.
  • the normal order or the reverse order of the tatami surface, the fluctuation widths V MB of the detected voltage with respect to the cleaning surface to be cleaned are made larger in sequence the floor, the tatami and the carpet. Further it can discriminate the tatami and the carpet and the fluctuation width is made larger in sequence the lengths of the downs (a)-(c) in the carpet.
  • the fluctuation widths V MB of the detected voltage is substantially same between the floor and the tatami of the cleaning surface to be cleaned, only by using the fluctuation width V MB , it is difficult to judge the cleaning surface to be cleaned whether the floor or the tatami.
  • the judgment about the cleaning surface to be cleaned whether the floor or the tatami by using the mean value V MD of the detected voltage shown in Fig. 35, can be judged under in addition to the operation conditions of the nozzle motor 26 and the fan motor FM.
  • Fig. 37 shows the characteristic of the vacuum cleaner.
  • the horizontal axis shows the wind amount Q (m3/min) and the vertical axis shows the suction power P OUT indicating the suction performance, the rotation speed N of the fan motor FM and the load current I D .
  • An area sandwitched between two of two-dots chain lines is the actual operation range.
  • the wind amount exists in the maximum operation point, in proportional to the proceeding of the clogging of the filter, the operation point transfers gradually toward the left side, and when it becomes completely the filter clogging condition the wind amount reaches to the minimum operation point.
  • the mean value V MD of the detected voltage V DP receives the affect according to the above stated operation condition of the vacuum cleaner and this relates also the clogging of the filter of the vacuum cleaner. Namely, when the filter is not clogged, since the wind amount is large the suction force becomes strong.
  • the load current I D of the fan motor FM has the close relation to the wind amount. Accordingly, by detecting the load current I D of the fan motor FM the clogging degree rate of the filter is judged, and then the standard for judging the cleaning surface to be cleaned according to the variation of the load current of the nozzle motor 26 can be corrected.
  • Fig. 38 shows a control pattern stored in ROM 19-2 of the microcomputer 19, concretely it is indicated as the function table 8 which corresponds to the respective cleaning surface to be cleaned.
  • the horizontal axis shows the clogging degree rate of the filter and the vertical axis shows the speed command N*.
  • the rotation speed command is made large in sequence the no load, the floor, the tatami, the carpet (a), the carpet (b) and the carpet (c), and it is set to increase the rotation speed in proportional to the proceeding degree of the clogging degree rate of the filter. According to the above means, the speed command in response to the clogging degree rate of the filter and the cleaning surface to be cleaned can be obtained, and therefore the optimum control for the vacuum cleaner can be attained.
  • step 1 When the operation switch 30 enters to "on" condition, the operation command take-in processing and the starting processing (processing 7) are carried out and thereby the operation is prepared.
  • step 2 From the function table 8 the speed command N o on the no load is outputted, under the results of the speed calculation (processing 1) and the current detection (processing 3), the current command I* is calculated by carrying out the speed control and the current control processing (processing 9).
  • the transistor necessary to gate within the transistors TR1-TR6 and the current factor thereof are determined according to the gate signal generating processing (processing 10) and the fan motor FM is risen up to the rotation speed N o .
  • This series of the processings is called as for short, hereinafter, a motor control processing.
  • step 3 The nozzle motor 26 selects the operation mode (1) of the weak rotation and is rotated by carrying out the gate signal generating processing (processing 9). The nozzle motor 26 is risen up to the rotation speed necessary to judge the cleaning surface to be cleaned.
  • step 4 The current detecting processing (processing 2) of the nozzle motor 26 is carried out. And according to the mean value V MD within the predetermined sampling period and the fluctuation width V MB (V MX - V MN ) of the load current the judging processing (processing 4) of the cleaning surface to be cleaned is carried out and thereby the cleaning surface to be cleaned is estimated.
  • step 5 Under the above estimation result of the cleaning surface to be cleaned the speed command N1-N5 in response to the respective cleaning surface to be cleaned is selected, thereby the motor control processing is carried out.
  • step 6 The load current I D of the fan motor FM which motions under the rotation speed suitable for the respective cleaning surface to be cleaned is detected by the current detecting processing (processing 4). Under the detected value the filter clogging degree rate judging processing (processing 5) is carried out, and thereby the rotation speed command of the fan motor FM is corrected in response to the filter clogging degree rate.
  • step 7 by adding the clogging degree rate of the filter, the judging processing (processing 4) of the cleaning surface to be cleaned is carried out again. Under the estimation result about the cleaning surface to be cleaned the speed command N1-N5 is selected.
  • the operation mode of the nozzle motor 26 is set to be the mode (1) (processing 8) of the weak rotation speed, and when it is carpet the operation mode of the nozzle motor 26 is set to be the mode (2) (processing 8) of the strong rotation speed, respectively.
  • the cleaning surface to be cleaned is estimated or judged in accordance with the variation of the load current I N of the nozzle motor 26, under the result the motion rotation speeds of the nozzle motor 26 and the fan motor FM can be set.
  • the vacuum cleaner being controlled at the most suitable in response to the respective cleaning surface to be cleaned can be obtained.
  • Fig. 40 shows the variation of the load current during the suction nozzle operation in which the nozzle motor 26 rotates at the low speed rotation.
  • the nozzle motor 26 rotates at the low speed rotation, there does not make much difference the mean value and the fluctuation width of the load current against the respective cleaning surface to be cleaned.
  • the kind of the cleaning surface to be cleaned is estimated in accordance with the mean value of the fluctuation width of the peak value in the current of the nozzle motor 26, even when the cleaning surface to be cleaned is the woody floor, it is necessary to rotate the rotary brush. By the above reason, when the rotary brush rotates at the high speed it may cause a problem about the injury of the woody floor surface.
  • the rotation speed of the rotary brush for not injuring the woody floor surface is requested by the experiment, it can conform that the rotation speed makes to be less than about 1300 rpm. Namely, by taking into consideration the reduction ratio between the rotary brush and the nozzle motor 26, it is preferable to set the rotation speed of the nozzle motor 26 less than about 3300 rpm. In this case, the noise surrounding the suction nozzle can be reduced.
  • the peak value employ the nozzle motor current has been rectified to the whole-wave, however it may employ the peak value employ the nozzle motor current has been rectified to the half-wave.
  • the vacuum cleaner since the variation of the peak value of the load current in the nozzle motor 26 is detected, and by this detection both inputs of the fan motor FM and the nozzle motor 26 are adjusted automatically, the vacuum cleaner being capable to obtain automatically the most suitable suction force can be obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
EP91105964A 1990-04-16 1991-04-15 Verfahren zum Betreiben eines Staubsaugers Expired - Lifetime EP0458057B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2097666A JP2523930B2 (ja) 1990-04-16 1990-04-16 電気掃除機の製御方法
JP97666/90 1990-04-16
JP100319/90 1990-04-18
JP100320/90 1990-04-18
JP2100319A JP2865795B2 (ja) 1990-04-18 1990-04-18 電気掃除機
JP2100320A JP2539532B2 (ja) 1990-04-18 1990-04-18 電気掃除機の制御方法

Publications (2)

Publication Number Publication Date
EP0458057A1 true EP0458057A1 (de) 1991-11-27
EP0458057B1 EP0458057B1 (de) 1995-02-01

Family

ID=27308466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91105964A Expired - Lifetime EP0458057B1 (de) 1990-04-16 1991-04-15 Verfahren zum Betreiben eines Staubsaugers

Country Status (3)

Country Link
EP (1) EP0458057B1 (de)
KR (1) KR0161987B1 (de)
DE (1) DE69107119D1 (de)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2720258A1 (fr) * 1994-05-26 1995-12-01 Moulinex Sa Aspirateur de poussières comportant une unité de commande à logique floue.
WO1996002179A1 (fr) * 1994-07-13 1996-02-01 Moulinex S.A. Aspirateur de poussieres comportant une unite de commande a logique floue
SG94830A1 (en) * 2000-07-10 2003-03-18 Te Hsi Liu A dust collect device for an eraser
WO2006018599A1 (en) * 2004-08-19 2006-02-23 Kenwood Limited Reducing ripples by a filter comprising a capacitor and an inductive reactance of an induction motor
WO2008128751A1 (de) * 2007-04-24 2008-10-30 Miele & Cie. Kg Verfahren zur betreiben einer rotationsbürstenanordnung und rotationsbürstenanordnung zur durchführung eines solchen verfahrens
DE102007025388A1 (de) * 2007-05-30 2008-12-04 Miele & Cie. Kg Verfahren zum Betreiben eines Staubsaugers
WO2009068299A1 (de) * 2007-11-28 2009-06-04 Kurz, Gerhard Luft-volumenstrom- und schiebekraft-regelungsvorrichtung
WO2012013483A3 (de) * 2010-07-28 2012-03-29 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung und verfahren zum betreiben eines staubsaugers
US9301665B2 (en) 2013-06-13 2016-04-05 Dyson Technology Limited Vacuum cleaner
EP3120744A1 (de) * 2015-07-24 2017-01-25 BSH Hausgeräte GmbH Vorrichtung zur steuerung einer reinigung einer filtereinheit für staubsauger
CN109106286A (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
EP2875767B1 (de) 2013-11-21 2019-10-09 BSH Hausgeräte GmbH Verfahren zum Betreiben eines Staubsaugers und Staubsauger
DE102018128838A1 (de) * 2018-11-16 2020-05-20 Miele & Cie. Kg Verfahren zum Betrieb eines Staubsaugersystems sowie Staubsaugersystem
EP3632282A4 (de) * 2018-05-18 2020-08-05 Samsung Electronics Co., Ltd. Staubsauger und verfahren zur steuerung eines staubsaugers
CN111938508A (zh) * 2019-05-15 2020-11-17 添可智能科技有限公司 地刷类型识别方法、吸尘设备及存储介质
EP3970584A1 (de) * 2020-09-16 2022-03-23 Miele & Cie. KG Staubsauger, vorzugsweise handstaubsauger
US20220273150A1 (en) * 2019-07-19 2022-09-01 Lg Electronics Inc. Method for controlling cleaner
KR20220123353A (ko) * 2020-06-30 2022-09-06 삼성전자주식회사 진공 청소기 및 진공 청소기의 제어방법
WO2022216257A1 (en) * 2021-04-05 2022-10-13 Karaca Züccaci̇ye Ti̇caret Ve Sanayi̇ Anoni̇m Şi̇rketi̇ Electric vacuum cleaner
DE102021124724A1 (de) 2021-09-24 2023-03-30 Miele & Cie. Kg Haushaltsgerät, vorzugsweise Staubsauger, besonders vorzugsweise Handstaubsauger
EP4218524A1 (de) * 2015-09-17 2023-08-02 Samsung Electronics Co., Ltd. Reinigungsroboter und verfahren zur steuerung davon
US11896176B2 (en) 2017-12-18 2024-02-13 Techtronic Floor Care Technology Limited Surface cleaning device with triggerless fluid distribution mechanism
US11944248B2 (en) 2017-12-18 2024-04-02 Techtronic Floor Care Technology Limited Surface cleaning device with automated control

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100751934B1 (ko) * 2001-10-05 2007-08-24 엘지전자 주식회사 중앙집진식 진공청소기
DE102018126138A1 (de) 2018-10-22 2020-04-23 Miele & Cie. Kg Verfahren und Vorrichtung zum Erkennen eines Typs einer motorbetriebenen Bürste für einen Staubsauger, Verfahren und Vorrichtung zum Betreiben eines Staubsaugers, motorbetriebene Bürste für einen Staubsauger und Staubsauger
KR102290760B1 (ko) * 2019-07-19 2021-08-18 엘지전자 주식회사 청소기의 제어 방법
KR20220107749A (ko) * 2021-01-26 2022-08-02 엘지전자 주식회사 상향식 전력선 통신을 수행하는 전자 장치 및 그 동작 방법

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2063659A (en) * 1979-11-28 1981-06-10 Duepro Ag Brushing appliance for vacuum cleaners
EP0136357A1 (de) * 1983-02-12 1985-04-10 Matsushita Electric Industrial Co., Ltd. Elektrischer staubsauger
US4654924A (en) * 1985-12-31 1987-04-07 Whirlpool Corporation Microcomputer control system for a canister vacuum cleaner
DE8901003U1 (de) * 1989-01-21 1989-04-06 Interlava AG, Lugano Vorrichtung zur automatischen Saugleistungssteuerung eines Staubsaugers
EP0320878A2 (de) * 1987-12-15 1989-06-21 Hitachi, Ltd. Verfahren für den Betrieb eines Staubsaugers
EP0362894A2 (de) * 1988-10-07 1990-04-11 Hitachi, Ltd. Staubsauger und Verfahren zu dessen Betrieb
EP0264728B1 (de) * 1986-10-08 1992-01-15 Hitachi, Ltd. Verfahren und Vorrichtung zum Betrieb eines Staubsaugers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2606842B2 (ja) * 1987-05-30 1997-05-07 株式会社東芝 電気掃除機

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2063659A (en) * 1979-11-28 1981-06-10 Duepro Ag Brushing appliance for vacuum cleaners
EP0136357A1 (de) * 1983-02-12 1985-04-10 Matsushita Electric Industrial Co., Ltd. Elektrischer staubsauger
US4654924A (en) * 1985-12-31 1987-04-07 Whirlpool Corporation Microcomputer control system for a canister vacuum cleaner
EP0264728B1 (de) * 1986-10-08 1992-01-15 Hitachi, Ltd. Verfahren und Vorrichtung zum Betrieb eines Staubsaugers
EP0320878A2 (de) * 1987-12-15 1989-06-21 Hitachi, Ltd. Verfahren für den Betrieb eines Staubsaugers
EP0362894A2 (de) * 1988-10-07 1990-04-11 Hitachi, Ltd. Staubsauger und Verfahren zu dessen Betrieb
DE8901003U1 (de) * 1989-01-21 1989-04-06 Interlava AG, Lugano Vorrichtung zur automatischen Saugleistungssteuerung eines Staubsaugers

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2720258A1 (fr) * 1994-05-26 1995-12-01 Moulinex Sa Aspirateur de poussières comportant une unité de commande à logique floue.
WO1996002179A1 (fr) * 1994-07-13 1996-02-01 Moulinex S.A. Aspirateur de poussieres comportant une unite de commande a logique floue
SG94830A1 (en) * 2000-07-10 2003-03-18 Te Hsi Liu A dust collect device for an eraser
WO2006018599A1 (en) * 2004-08-19 2006-02-23 Kenwood Limited Reducing ripples by a filter comprising a capacitor and an inductive reactance of an induction motor
WO2008128751A1 (de) * 2007-04-24 2008-10-30 Miele & Cie. Kg Verfahren zur betreiben einer rotationsbürstenanordnung und rotationsbürstenanordnung zur durchführung eines solchen verfahrens
DE102007025388A1 (de) * 2007-05-30 2008-12-04 Miele & Cie. Kg Verfahren zum Betreiben eines Staubsaugers
EP1997417A3 (de) * 2007-05-30 2009-08-26 Miele & Cie. KG Verfahren zum Betreiben eines Staubsaugers
WO2009068299A1 (de) * 2007-11-28 2009-06-04 Kurz, Gerhard Luft-volumenstrom- und schiebekraft-regelungsvorrichtung
US20100300489A1 (en) * 2007-11-28 2010-12-02 Detlef Schulz Air volume flow and pushing force control device
US8776307B2 (en) 2007-11-28 2014-07-15 Gerhard Kurz Air volume flow and pushing force control device
WO2012013483A3 (de) * 2010-07-28 2012-03-29 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung und verfahren zum betreiben eines staubsaugers
CN105491932B (zh) * 2013-06-13 2017-09-19 戴森技术有限公司 真空吸尘器
CN105491932A (zh) * 2013-06-13 2016-04-13 戴森技术有限公司 真空吸尘器
US9301665B2 (en) 2013-06-13 2016-04-05 Dyson Technology Limited Vacuum cleaner
EP2875767B1 (de) 2013-11-21 2019-10-09 BSH Hausgeräte GmbH Verfahren zum Betreiben eines Staubsaugers und Staubsauger
EP3120744A1 (de) * 2015-07-24 2017-01-25 BSH Hausgeräte GmbH Vorrichtung zur steuerung einer reinigung einer filtereinheit für staubsauger
EP4218524A1 (de) * 2015-09-17 2023-08-02 Samsung Electronics Co., Ltd. Reinigungsroboter und verfahren zur steuerung davon
US11896176B2 (en) 2017-12-18 2024-02-13 Techtronic Floor Care Technology Limited Surface cleaning device with triggerless fluid distribution mechanism
US11944248B2 (en) 2017-12-18 2024-04-02 Techtronic Floor Care Technology Limited Surface cleaning device with automated control
EP3632282A4 (de) * 2018-05-18 2020-08-05 Samsung Electronics Co., Ltd. Staubsauger und verfahren zur steuerung eines staubsaugers
CN109106286A (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
DE102018128838A1 (de) * 2018-11-16 2020-05-20 Miele & Cie. Kg Verfahren zum Betrieb eines Staubsaugersystems sowie Staubsaugersystem
CN111938508A (zh) * 2019-05-15 2020-11-17 添可智能科技有限公司 地刷类型识别方法、吸尘设备及存储介质
CN111938508B (zh) * 2019-05-15 2024-03-08 添可智能科技有限公司 地刷类型识别方法、吸尘设备及存储介质
US20220273150A1 (en) * 2019-07-19 2022-09-01 Lg Electronics Inc. Method for controlling cleaner
US12029380B2 (en) * 2019-07-19 2024-07-09 Lg Electronics Inc. Method for controlling cleaner
KR20220123353A (ko) * 2020-06-30 2022-09-06 삼성전자주식회사 진공 청소기 및 진공 청소기의 제어방법
EP3970584A1 (de) * 2020-09-16 2022-03-23 Miele & Cie. KG Staubsauger, vorzugsweise handstaubsauger
WO2022216257A1 (en) * 2021-04-05 2022-10-13 Karaca Züccaci̇ye Ti̇caret Ve Sanayi̇ Anoni̇m Şi̇rketi̇ Electric vacuum cleaner
DE102021124724A1 (de) 2021-09-24 2023-03-30 Miele & Cie. Kg Haushaltsgerät, vorzugsweise Staubsauger, besonders vorzugsweise Handstaubsauger

Also Published As

Publication number Publication date
DE69107119D1 (de) 1995-03-16
KR910017996A (ko) 1991-11-30
EP0458057B1 (de) 1995-02-01
KR0161987B1 (ko) 1998-12-01

Similar Documents

Publication Publication Date Title
EP0458057A1 (de) Verfahren zum Betreiben eines Staubsaugers
USRE34286E (en) Method and apparatus for operating vacuum cleaner
US5243732A (en) Vacuum cleaner with fuzzy logic control
US5075607A (en) Method and apparatus for operating vacuum cleaner
USRE40250E1 (en) Pulse width modulation circuit controlling output current of an inverter circuit for motor-driven blower or electric vacuum cleaner
US6624606B2 (en) Drive control circuit for three-phase brushless motor, motor-driven blower and electric vacuum cleaner
KR101284492B1 (ko) 전기 진공 청소기
US4983895A (en) Method and apparatus for operating vacuum cleaner
JP2539532B2 (ja) 電気掃除機の制御方法
JP2523930B2 (ja) 電気掃除機の製御方法
JP3334585B2 (ja) 電気掃除機
JP2865795B2 (ja) 電気掃除機
JP2773433B2 (ja) 電気掃除機
JP2855853B2 (ja) 電気掃除機
JP3146944B2 (ja) 電気掃除機の制御回路
JPS63249487A (ja) 電気掃除機
JP2531779B2 (ja) 電動送風機
JPH0584163B2 (de)
JPH0994194A (ja) 電気掃除機
JPH10192208A (ja) 電気掃除機

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB

17P Request for examination filed

Effective date: 19911203

17Q First examination report despatched

Effective date: 19930324

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950201

REF Corresponds to:

Ref document number: 69107119

Country of ref document: DE

Date of ref document: 19950316

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19950501

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950501

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed