EP0458057B1 - Verfahren zum Betreiben eines Staubsaugers - Google Patents

Verfahren zum Betreiben eines Staubsaugers Download PDF

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Publication number
EP0458057B1
EP0458057B1 EP91105964A EP91105964A EP0458057B1 EP 0458057 B1 EP0458057 B1 EP 0458057B1 EP 91105964 A EP91105964 A EP 91105964A EP 91105964 A EP91105964 A EP 91105964A EP 0458057 B1 EP0458057 B1 EP 0458057B1
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EP
European Patent Office
Prior art keywords
processing
motor
rotation speed
cleaned
static pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91105964A
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English (en)
French (fr)
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EP0458057A1 (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
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Hitachi Ltd
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Hitachi Ltd
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Filing date
Publication date
Priority claimed from JP2097666A external-priority patent/JP2523930B2/ja
Priority claimed from JP2100320A external-priority patent/JP2539532B2/ja
Priority claimed from JP2100319A external-priority patent/JP2865795B2/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

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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
    • A47L9/2857—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
    • 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 method for operating a vacuum cleaner, in particular being applicable to a vacuum cleaner having a power brush suction nozzle body, so that the vacuum cleaner can be operated at the most optimum condition in response to the kind of the surface to be cleaned and also the kind of the 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 in particular 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 housed in a vacuum cleaner main body.
  • the suction nozzle member comprises a suction nozzle member for general use, a suction nozzle member for use in a shelf and a suction nozzle member for use in a crevice.
  • the power brush suction nozzle body is used in a similar manner as the general use suction nozzle member.
  • the kind of the general use suction nozzle member including the case when the power for the power brush suction nozzle body is being cut-off, the shelf use suction nozzle member and the crevice use suction nozzle member will be 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 the variation of the current which flows into a nozzle motor provided in a power brush suction nozzle body, and on the basis of this result an input to a fan motor is controlled.
  • the rushes of the tatami indicates plural rushes forming the tatami.
  • the rush is a name of a plant and the tatami is made mainly from the many number of rushes.
  • the arranging direction of rushes of the surface of the tatami is called as the tatami normal order, the opposite direction is called the tatami reverse order.
  • a voltage applied to the AC commutator motor is adjusted by the triac, according to the cleaning surface to be cleaned or a value detected by the pressure sensor or the air flow amount sensor, and as a result the power of the vacuum cleaner is controlled.
  • EP-A-0 264 728 discloses a method for operating a vacuum cleaner in response to the kind of surface to be cleaned.
  • the method comprises the steps of starting a fan motor and increasing its rotation speed up to a rotation speed of a standby state, calculating the rotation speed of the fan motor in accordance with the receipt of a detection signal from a magnetic pole detecting circuit and carrying out a detection of the degree of clogging of a filter.
  • Document EP-A-0 136 357 discloses a vacuum cleaner comprising a brushless motor, a rectifying circuit, and inverter circuit comprising transistors, a resistor for detecting a load current, a magnetic pole position detecting circuit, a Hall-element, and a microcomputer consisting of a central processing unit, a read-only memory and a random access memory.
  • An object of the present invention is to provide a vacuum cleaner operating method wherein the most suitable suction force for the vacuum cleaner can be obtained automatically in response to the kind of the surface to be cleaned.
  • Another object of the present invention is to provide a vacuum cleaner operating method wherein the most suitable rotation speed for a rotary brush provided in 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 operating method 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 the kind of the surface to be cleaned and the kind of the suction nozzle member.
  • a further object of the present invention is to provide a vacuum cleaner operating method wherein various factors indicating a load condition of a fan motor of a vacuum cleaner main body such as an air flow amount and a static pressure can be detected without any sensors and wherein 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 operating method wherein the most suitable suction force for the vacuum cleaner can be obtained automatically in response to the kind of the surface to be cleaned even in the case when the surface to be cleaned is a tatami.
  • the various kinds of the suction nozzle including the power brush suction nozzle are used in the operation of the vacuum cleaner.
  • the power brush suction nozzle can be classified in accordance with the current flowing in the fan motor.
  • the power brush suction nozzle and other kinds of suction nozzles can be estimated in accordance with the magnitude of the current flowing in the fan motor.
  • the static pressure variation with the operation air flow amount differs in each kind of suction nozzle such as the suction nozzle for general use, the suction nozzle for shelf use and the suction nozzle for crevice use, for example, as shown in Fig. 12.
  • the suction nozzle in use can be estimated in accordance with the static pressure H as function of the air flow 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 constant air flow amount 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 air flow amount and the static pressure are calculated in accordance with the load current and the rotation speed of the fan motor.
  • the rotation 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.
  • the rotary brush Since the rotary brush contacts directly the 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.
  • the vacuum cleaner Since the inputs to the fan motor and the nozzle motor are controlled, the vacuum cleaner having the most suitable suction force against the surface to be cleaned can be obtained.
  • 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 possibility.
  • 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 capacitor 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 capacitor 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 bus, a data bus and a control bus 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 19D 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 a construction of the interior of the power brush suction nozzle body, respectively.
  • 1 indicates a 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 of the filter 7, respectively.
  • a rotary brush 10 and brushes 11 attached to the rotary brush 10 are accommodated.
  • 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 surface 1 to be cleaned. Since the brushes 11 are attached to the rotary brush 10, the brushes 11 contact to the 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 show 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 increases from rotation speed (1) to 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, said downs progressively increasing in length.
  • Fig. 8 it may be considered whether or not the kind of the surface 1 to be cleaned can be estimated 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 when the nozzle motor 26 initially rotates at a low speed, in accordance with the size of the increasing rate between the fluctuation width V MB of the detected voltage and the increasing rate of rotation from the rotation speed (1) to 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 in the load current I N of the nozzle motor 26 during the suction nozzle operation in response to the surface to be cleaned.
  • the rotation speed of the rotary brush 10 is made less than 1200 rpm, so that destruction of the surface to be cleaned during the tatami and the floor is avoided and a reduction in the noise generated is achieved.
  • 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 rotate at low speed, and when the suction nozzle operation is detected, the initial estimation of the 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 nozzle motor 26 begins to rotate at a higher speed, the estimation of the surface to be cleaned is carried out in accordance with the fluctuation width V MB of the detected voltage.
  • the inputs to the fan motor FM and the nozzle motor 26 are controlled automatically.
  • the 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 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 show the results of 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 plotted against the rotation speed of the fan motor FM.
  • the fluctuation width H MB of the static pressure has the largest value when the surface is a tatami. Accordingly, it is impossible to distinguish the kind of the surface to be cleaned by the size of the fluctuation width H MB of the static pressure, because of the existence of the tatami reverse order.
  • the fluctuation width H MB of the static pressure during the suction nozzle operation at the rotation speed (1) is used for the standardization for estimating the surface to be cleaned.
  • 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 by the following formula and it is proportional to the product of the wind amount Q and the static pressure H.
  • the constant air flow amount Q ensures the necessary minimum air flow 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 air flow amount Q is made constant, inversely the clogging degree rate can be 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 if the static pressure rises above a certain level, it is difficult to remove the foreign matters.
  • the control values of the constant air flow amount Q and the constant static pressure H are varied in response to the cleaning surface to be cleaned.
  • the air flow 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 air flow 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 air flow 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 6 the rotation speed of the fan motor FM is controlled in accordance with the procedures stated in step 6, and the suction nozzle judgment is carried out repeatedly.
  • 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 driving software for the fan motor FM or the driving software for the fan motor FM and the nozzle motor 26 may be installed, and the software for the suction nozzle estimation and the surface to be cleaned estimation may be installed in another microcomputer.
  • the rotation speed and the load current are adopted, however 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) may be adopted.
  • 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 of the filter 7, the suction nozzle in use and the most suitable suction port according to the 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.
  • N F is the rotation speed of the fan and 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).
  • 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 ratio of rotation speed to 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) Accordingly, the following formula is obtained.
  • 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 surface to be cleaned is 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 change-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 23A 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 the use of the pressure sensor and the air flow rate sensor. Further, the air flow 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 the optimum power for the vacuum cleaner can be controlled.
  • the air flow 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 the optimum power for the vacuum cleaner can be controlled.
  • the calculation for the air flow 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 air flow Q and the static pressure H are used for controlling the brushless motor 17, however they may also be used for indicating the load condition of the vacuum cleaner.
  • Fig. 20 - Fig. 26 show another embodiment according to the present invention.
  • Fig. 20 is a block diagram showing a schematic construction of a control circuit including a static pressure H detector
  • 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 air flow 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 air flow 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 an air flow detection of the vacuum cleaner
  • Fig. 23 is a schematic construction of a control circuit using an air flow sensor together.
  • Fig. 23 the following points differ in comparison with Fig. 14.
  • the air flow of the vacuum cleaner 31 is detected.
  • the air flow is detected by an air flow sensor 34 mounted on the vacuum cleaner 31, and in the air flow processing in the processing 10 included in the microcomputer 19 and by receiving a signal 35S from an air flow amplifier 35, the air flow Q of the vacuum cleaner 31 is detected.
  • the speed command N CMD may be outputed 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 in Fig. 19.
  • 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 air flow 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 air flow Q and the rotation speed N, and it can output the speed command N CMD so as to become a predetermined air flow 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 either 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 air flow Q or the static pressure H is calculated, and according to the operation pattern and the air flow constant control (AQR) and the static pressure constant control (AHR) are operated, thereby the optimum power for the vacuum cleaner 31 can be controlled.
  • the air flow Q or the static pressure H is calculated by the calculation, and according to the operation pattern and the air flow constant control (AQR) and the static pressure constant control (AHR) are operated, thereby it can control the optimum power for the vacuum cleaner can be controlled.
  • the various factors for indicating the load condition of the fan motor for use in the vacuum cleaner namely the air flow 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 numerals indicate the same or substantially corresponding elements 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 of 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 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. 32A shows an example for the amplifier 28 comprising an amplifying element 32A, 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 to the peak value of the nozzle motor current I N .
  • Fig. 32B 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. 32A.
  • 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 surface to be cleaned.
  • (1) indicates that the nozzle motor 26 is operated with a whole-wave operation (the voltage rectified the alternating 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 mean value V MD varies in accordance with the operation conditions of the nozzle motor 26 and the fan motor FM, and the mean value V MD is substantially the 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 surface to be cleaned, in which the numbers (1)-(4) are the same conditions shown in Fig. 35.
  • the fluctuation width V MB of the detected voltage is not affected by the operation conditions of the nozzle motor 26 and the fan motor FM. In the case of no load, the fluctuation width V MB of the detected voltage becomes zero.
  • the fluctuation widths V MB of the detected voltage with respect to the surface to be cleaned increase in the sequence floor, tatami and carpet. Further in order that the tatami may be discriminated from the carpet the fluctuation width increases larger in the sequence of 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 surface to be cleaned, only by using the fluctuation width V MB , it is difficult to judge whether the surface is a floor or the tatami.
  • the judgment about whether the surface to be cleaned is a floor or a tatami by using the mean value V MD of the detected voltage shown in Fig. 35, can be obtained in addition to the operation conditions of the nozzle motor 26 and the fan motor FM.
  • the characteristics of the vacuum cleaner are shown in Fig. 37.
  • the horizontal axis shows the flow rate 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 included between two of the dotted chain lines is the actual operation range.
  • the mean value V MD of the detected voltage V DP receives the effect according to the above stated operation condition of the vacuum cleaner and this relates also to the clogging of the filter of the vacuum cleaner. Namely, when the filter is not clogged, since the air flow rate 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 of the filter is determined, and then the standard for judging the 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 (Fig 29) which corresponds to the respective cleaning surface to be cleaned.
  • the horizontal axis shows the clogging degree of the filter and the vertical axis shows the speed command N*.
  • the rotation speed command is increased in the sequence no load, floor, tatami, carpet (a), carpet (b) and carpet (c), and is set to increase the rotation speed in proportion to the clogging degree of the filter. According to the above means, the speed command in response to the clogging degree of the filter and the surface to be cleaned can be obtained, and therefore the optimum control for the vacuum cleaner can be attained.
  • the operation mode of the nozzle motor 26 is set to be the mode (1) (processing 8) of low rotation speed, and when it is the carpet the operation mode of the nozzle motor 26 is set to be the mode (2) (processing 8) of high rotation speed, respectively.
  • the 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 variation of rotation speeds of the nozzle motor 26 and the fan motor FM.
  • the vacuum cleaner control can be obtained at the most suitable point in response to the respective surface to be cleaned.
  • Fig. 40 shows the variation of the load current during the suction nozzle operation in which the nozzle motor 26 rotates at low speed.
  • the nozzle motor 26 rotates at low speed, 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 rotation speed of the rotary brush in order not to damage the wooden floor surface, as concluded by the experiment, should 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 to less than about 3300 rpm. In this case, the noise generated by 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.

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

Claims (2)

  1. Verfahren zum Betreiben eines Staubsaugers nach Maßgabe der Art der zu reinigenden Oberfläche sowie der Art des Saugdüsenbauteils durch Verwendung eines Mikrocomputers (19), mit den folgenden Schritten:
    Schritt 1:   Starten eines Gebläsemotors FM (Vorgang 7) und Erhöhen der Drehzahl bis zu einer Drehzahl 1 im Bereitschaftszustand;
    Schritt 2:   Berechnen der Drehzahl N (Vorgang 1) des Gebläsemotors FM entsprechend einem von einer Magnetpol-Erfassungsschaltung (18) empfangenen Signal (18S),
    Berechnen des Strom-Sollwerts I* (Vorgang 12) für den Gebläsemotor FM und
    Berechnen der Luftflußmenge Q in Übereinstimmung dazu,
    Durchführen einer Verarbeitung zur Erfassung des statischen Drucks (Vorgang 13) mittels einer Erfassungsschaltung (31) für den statischen Druck zur Erfassung eines statischen Drucks H, und
    Starten eines Düsenmotors (26) und Durchführen des Düsenmotor-Stromerfassungsvorgangs (Vorgang 2) und
    Ausführen der Saugdüsenbauteil-Abschätzung (Vorgang 14);
    Schritt 3:   Erfassen des Verstopfungsgrads eines Filters (7) entsprechend der Beziehung zwischen dem statischen Druck H und der Luftflußmenge Q; (Vorgang 5),
    Schritt 4:   Betreiben des Düsenmotors (26) bei niedriger Geschwindigkeit durch eine Nulldurchgangserfassungsschaltung (32), einen Phasensteuerungswinkel-Setzvorgang (Vorgang 8) und einen Gatesignal-Erzeugungsvorgang (Vorgang 9), wenn die Saugdüsenbauteil-Abschätzung (Vorgang 14) ergibt, daß der Saugdüsenkörper mit angetriebener Bürste verwendet wird,
    Erfassen der Fluktuationsbreite des statischen Drucks H und des Verstopfungsgrads des Filters (7) während der Betriebsdauer der Saugdüse;
    Schritt 5:   nach der Beendigung der ersten Abschätzung bezüglich der zu reinigenden Oberfläche Erhöhen der Drehzahl des Gebläsemotors (FM) bis zu einer Drehzahl 2 und Durchführen der Abschätzung bezüglich der zu reinigenden Oberfläche (Vorgang 4) unter Berücksichtigung der Zunahme der Fluktuationsbreite des Spitzenwerts des Stroms des Düsenmotors (26) oder der Zunahme der Fluktuationsbreite des statischen Drucks H und des Verstopfungsgrads des Filters (7);
    Schritt 6:   Setzen (Vorgang 6) der Luftflußmenge (Q₁ - Q₅), des statischen Drucks (H₁ - H₅) und der Drehzahl N unter Berücksichtigung der Ergebnisse aus Schritt 4, und Ausgeben einer Sollgeschwindigkeit N* und Durchführen des Gebläsemotorstromerfassungsvorgangs (Vorgang 3) und Erfassen des Laststroms ID des Gebläsemotors FM und Ausgeben der Drehzahl N (Vorgang 1), der Solldrehzahl N* und des Sollstroms I* jeweils aus einem Geschwindigkeitssteuerungssystem (ASR) und einem Stromsteuerungssystem (ACR) entsprechend dem erfaßten Laststrom ID (Vorgang 11), Steuern des Gebläsemotors FM auf eine gewünschte Drehzahl entsprechend dem empfangenen Sollstrom I* im Gatesignal-Erzeugungsvorgang (Vorgang 9);
    Schritt 7:   beim Empfang eines Signals von der Nulldurchgang-Erfassungsschaltung (32) Bestimmen eines Gatewinkels in einem Gatesignal-Erzeugungsvorgang (Vorgang 9) zur Steuerung des Düsenmotors (26) auf eine gewünschte Drehzahl;
    Schritt 8:   Betreiben des Düsenmotors (26) bei niedriger Geschwindigkeit, wenn die zu reinigende Oberfläche der Boden ist;
    Schritt 9:   Betreiben des Düsenmotors (26) bei hoher Drehzahl, wenn die zu reinigende Oberfläche eine Tatami-Matte oder ein Teppich ist, unter Berücksichtigung der Fluktuationsbreite des Spitzenwerts des Stroms des Düsenmotors (26), der Fluktuationsbreite des statischen Drucks H und des Verstopfungsgrads des Filters (7), Durchführen zweier Arten von Abschätzungen der zu reinigenden Oberfläche (Vorgang 4) und wiederholtes Durchführen dieses Verfahrens für die zu reinigende Oberfläche;
    Schritt 10:   Abschätzen, daß die zu reinigende Oberfläche der Boden und die Art einer Tatami-Matte oder nach Art eines Teppichs ist, wenn beim Vorgang des Beurteilens des Saugdüsenbauteils (Vorgang 14) in Schritt 2 bei der Sauggeschwindigkeit 1 des Gebläsemotors FM unter Berücksichtigung der Zunahme der Fluktuationsbreite des statischen Drucks H bei der tatsächlichen Drehzahl 1 und dem Verstopfungsgrad des Filters (7) eine Saugdüse für allgemeine Verwendung festgestellt wird;
    Schritt 11:   Ausgeben der Solldrehzahl N* entsprechend der Luftflußmenge Q₂, des statischen Drucks H₂ und der Drehzahl N, wenn die zu reinigende Oberfläche als der Boden oder eine Tatami-Matte in Schritt 10 festgelegt wird, dann Steuern der Drehzahl des Gebläsemotors FM entsprechend den in Schritt 6 beschriebenen Verfahren und wiederholtes Ausführen der Abschätzung der zu reinigenden Oberfläche aus Schritt 10,
    Schritt 12:   Ausgeben der Solldrehzahl N* entsprechend der Luftflußmenge Q₂, des statischen Drucks H₂ und der Drehzahl N, wenn die zu reinigende Oberfläche als teppichartig im Schritt 10 festgelegt wird, dann Steuern der Drehzahl des Gebläsemotors FM entsprechend Schritt 6 und wiederholtes Durchführen des Verfahrens zur Abschätzung der zu reinigenden Oberfläche aus Schritt 10; und
    Schritt 13:   Ausgeben der Solldrehzahl N* entsprechend einer einzigen Luftflußmenge Q sowie entsprechend dem statischen Druck H oder entsprechend zweier Luftflußmengen Q und zweier statischer Drücke H, die jeweils an verschiedenen Motordrehzahlen ermittelt wurden, wenn das Saugdüsenbauteil als eine Saugdüse zur Verwendung in Regalen oder als eine Saugdüse zur Verwendung in Spalten erkannt wurde, und Steuern der Drehzahl des Gebläsemotors FM entsprechend den im Schritt 6 beschriebenen Verfahren und wiederholtes Durchführen der Beurteilung des Saugdüsenbauteils.
  2. Verfahren nach Anspruch 1, bei dem im Schritt 2
    der Sollstrom (I*) bezugnehmend auf die Ergebnisse der Geschwindigkeitsberechnung (Vorgang 1) und der Stromerfassung (Vorgang 3) berechnet wird, und
    das Starten des Düsenmotors (26) die Auswahl des Betriebsmodus 1 für den Düsenmotor (26) mit niedriger Drehzahl umfaßt sowie Antreiben desselben durch Ausführen des Gatesignal-Erzeugungvorgangs und Erhöhen der Drehzahl bis zu einer Drehzahl, die notwendig ist, um die zu reinigende Oberfläche abschätzen zu können, die abgeschätzt wird entsprechend einem Mittelwert VMD innerhalb einer vorbestimmten Beobachtungsdauer und der Fluktuationsbreite VMB (VMX - VMN) des Laststroms (ID).
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
JP97666/90 1990-04-16
JP2097666A JP2523930B2 (ja) 1990-04-16 1990-04-16 電気掃除機の製御方法
JP2100320A JP2539532B2 (ja) 1990-04-18 1990-04-18 電気掃除機の制御方法
JP100320/90 1990-04-18
JP2100319A JP2865795B2 (ja) 1990-04-18 1990-04-18 電気掃除機
JP100319/90 1990-04-18

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EP4188176A4 (de) * 2021-04-05 2024-02-28 Karaca Züccaciye Ticaret ve Sanayi Anonim Sirketi Elektrischer staubsauger
DE102021124724A1 (de) 2021-09-24 2023-03-30 Miele & Cie. Kg Haushaltsgerät, vorzugsweise Staubsauger, besonders vorzugsweise Handstaubsauger

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US11369244B2 (en) 2018-05-18 2022-06-28 Samsung Electronics Co., Ltd. Vacuum cleaner and method for controlling vacuum cleaner
US11779181B2 (en) 2018-05-18 2023-10-10 Samsung Electronics Co., Ltd. Vacuum cleaner and method for controlling vacuum cleaner
EP3643215B1 (de) 2018-10-22 2022-06-22 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

Also Published As

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EP0458057A1 (de) 1991-11-27
DE69107119D1 (de) 1995-03-16
KR910017996A (ko) 1991-11-30
KR0161987B1 (ko) 1998-12-01

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