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
  • 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
  • A47L9/2805—Parameters or conditions being sensed
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
  • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
  • A47L9/2805—Parameters or conditions being sensed
  • A47L9/2821—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
  • A47L9/2894—Details related to signal transmission in suction cleaners
• • 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
  • A47L9/30—Arrangement of illuminating devices
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

• the present invention relates to a configuration of a vacuum cleaner.
• phase control means controls the power consumption of the motor with the phase value of the phase control set by the output of the signal processing means. Since the power consumption is configured to change according to the air volume, when the amount of dust increases and the air volume drops sharply, the power consumption can be reduced by the pressure switch. Therefore, thermal restrictions can be eliminated. -However, in the conventional configuration, it is necessary to use a microcomputer for control using various analog sensors, and there is a problem that it is not possible to perform a down control in accordance with an operation switch.
• an object of the present invention is to provide a low-cost vacuum cleaner capable of performing power-down control without using a microcomputer.
• Another object of the present invention is to provide a small-sized vacuum cleaner capable of performing power-down control without using a microcomputer.
• Still another object of the present invention is to provide a safe vacuum cleaner capable of performing power-down control as the temperature rises above a set value without using a microcomputer.
• Still another object of the present invention is to provide an easy-to-use vacuum cleaner that can operate normally as soon as the cause is removed after the sensor operates. Disclosure of the invention
• An electric vacuum cleaner includes a blower that generates a suction force, and a drive circuit that supplies AC power to the blower.
• the vacuum cleaner transmits a control signal for controlling the supply of AC power from the drive circuit to the blower, and detects whether at least one of the temperature and the pressure is a set value.
• a detection unit a phase control circuit comprising: a resistor having a resistance value; a power storage circuit for having a capacitance value; a phase information change circuit for changing at least one of the resistance value and the capacitance value in response to detection by the detection unit; A circuit for generating a control signal based on a time constant corresponding to the resistance value and the capacitance value.
• the phase control circuit includes: a conduction detection unit configured to detect whether a path including the resistor and the power storage circuit is conductive; and a control unit configured to determine whether the conduction detection unit detects conduction.
• a circuit for stopping the phase information changing circuit may be further included.
• the phase control circuit includes: a conduction detection unit that detects whether a path including the resistor and the power storage circuit is conductive; and a second predetermined time after the conduction detection unit detects conduction.
• a circuit that operates the phase information changing circuit irrespective of detection by the detection unit may be further included.
• the phase control circuit stores the voltage as the voltage becomes equal to or higher than the first predetermined voltage.
• a charge / discharge circuit for charging / discharging the electric circuit a voltage detecting unit for detecting a charging voltage of the power storage circuit, and a driving circuit in response to the charging voltage detected by the voltage detecting unit being equal to or higher than a second predetermined voltage
• the phase information changing circuit may include a switch for electrically connecting one end and the other end of the resistor, and a switch control circuit for switching on / off of the switch according to detection by the detection unit. Good.
• the switch includes a first photo power plug.
• the first photo power blur includes a first light emitting circuit that emits light according to conduction, and a first conduction path that is either conductive or interrupted according to light from the first light emitting circuit. .
• the first conduction path is provided on a path between one end and the other end of the resistor for conduction.
• the switch control circuit controls the first light emitting circuit.
• the switch control circuit may include a circuit for stopping light emission by the first light emitting circuit in response to detection by the detection unit.
• the phase control circuit further includes a second photo power plug for detecting whether or not a path including the resistor and the power storage circuit is conductive.
• the second photocoupler includes a second light emitting circuit provided on a path including a resistor and a power storage circuit, and a second light emitting circuit that is either conductive or interrupted according to light from the second light emitting circuit. And 2 conduction paths.
• the switch control circuit detects conduction of the second conduction path.
• the switch control circuit may include a circuit for stopping light emission by the first light emitting circuit for a first predetermined time according to conduction of the second conduction path.
• the vacuum cleaner has an operation unit for conducting a path including the resistor and the power storage circuit, an alarm display circuit for performing an alarm display in response to detection by the detection unit, and an alarm display stopped.
• the first light emitting circuit emits light regardless of the detection by the detecting unit until the second predetermined time elapses after the conduction is detected. May be further included.
• the switch control circuit may further include a circuit for stopping light emission by the first light emitting circuit in response to detection by the detection unit after a second predetermined time has elapsed. More preferably, the switch control circuit may further include a circuit for stopping the alarm display for a second predetermined time.
• the switch control circuit when the switch control circuit stops the light emission by the first light emitting circuit in response to the detection by the detection unit, the switch control circuit performs the light emission by the first light emitting circuit while the conduction of the second conduction path is detected. May be further included.
• FIG. 1 is a diagram schematically showing a vacuum cleaner 100 according to an embodiment of the present invention.
• FIG. 2 is a diagram schematically showing the cleaner main body 200 shown in FIG.
• FIG. 3 shows a control circuit 3 included in the cleaner main body 200 in the embodiment of the present invention.
• FIGS. 4A and 4B are diagrams for explaining the voltage supplied to the electric blower 18 by the phase control among the alternating voltages supplied to the drive unit 20 in the embodiment of the present invention. It is.
• FIG. 5 is a flowchart showing an operation when performing power down control of the electric vacuum cleaner 100 in the embodiment of the present invention.
• FIG. 1 is a diagram schematically illustrating a vacuum cleaner 100 according to an embodiment of the present invention.
• a vacuum cleaner 100 according to an embodiment of the present invention includes a head 2 having a suction port, and a hand operation unit 8 for operating the vacuum cleaner 100.
• a grip 6, a pipe 4 for connecting the head 2 to the grip 6, a hose 10 for allowing the vacuum cleaner 100 to pass the suctioned substance sucked from the head 2, and a vacuum cleaner body 200.
• It includes a power plug 14 for plugging into a household power outlet and a power cord 12 for transmitting power from the outlet.
• FIG. 2 is a diagram schematically showing the cleaner main body 200 shown in FIG.
• the main body 200 of the vacuum cleaner includes a dust collecting chamber 16 for collecting the suctioned inside the main body 200 of the cleaner, an electric blower 18 for generating a suction force, and an electric motor. And a control circuit 300 for controlling the drive of the blower 18.
• the electric blower 18 is controlled on-off (or strong, weak, stop, etc.) by the operation unit 8 via the control circuit 300.
• FIG. 3 is a functional block diagram of a control circuit 300 included in the cleaner main body 200 in the embodiment of the present invention.
• control circuit 300 includes a drive unit 20 for supplying a voltage to electric blower 18 in response to a control signal, and a power storage unit (not shown) having a predetermined capacity value.
• the charging and discharging circuit section 22 for outputting a control signal to the driving section 20 as the voltage charged in the power storage section becomes a predetermined voltage, and the temperature is equal to or higher than the set value.
• a continuity detection unit 42 to detect whether the switch of the hand operation unit 8 is turned on, and an alarm in response to the detection by the sensor 36.
• a control unit 24 for controlling the resistance value variable unit 40 and the continuity detection unit 42, and a control unit.
• a power supply section for supplying power to the power supply.
• the electric blower 18 receives power control such as on / off or strong / weak via the drive unit 20 by operation of the hand operation unit 8.
• the strength of the electric blower 18 is controlled by the phase information generated by the time constant corresponding to the resistance value of the resistor and the capacitance value of the power storage unit included in the path from the power supply unit 32 to the charge / discharge circuit unit 22.
• the so-called “phase control” of controlling the voltage supplied to the electric blower 18 out of the AC voltage supplied to the drive unit 20 is performed.
• the power storage unit includes a capacitor.
• the phase information includes information related to the phase of the voltage of the AC power supply.
• the charge / discharge circuit unit 22 starts charging / discharging according to the phase at which the voltage value of the AC power supply becomes 0 based on the phase information.
• the output timing of the ON signal from the capacitor included in the charge / discharge circuit unit 22 to the drive unit 20 is It is determined by a time constant corresponding to the resistance value and the capacitance value of the path from the source section 32 to the charge / discharge circuit section 22. That is, by making at least one of the resistance value and the capacitance value variable, the AC voltage supplied to the electric blower 18 by the drive unit 20 can be controlled.
• the hand operation unit 8 includes a resistor 8a, a resistor 8b, and a switch 8c.
• the resistor 8a and the resistor 8b are connected in series.
• One end of the resistor 8b is connected to the charge / discharge circuit
• Switch 8c connected to one end of the path from 32 is selectively connected to each node of resistor 8a and resistor 8b connected in series.
• FIGS. 4A and 4B are diagrams for explaining the voltage supplied to the electric blower 18 by the phase control among the alternating voltages supplied to the drive unit 20 in the embodiment of the present invention.
• FIG. FIG. 4A is a diagram showing charging / discharging timings in the charging / discharging circuit section 22.
• FIG. 4B is a diagram for explaining a voltage supplied from the drive unit 20 to the electric blower 18 in response to a control signal.
• charge / discharge circuit section 22 starts charging the internal capacitor by conduction of hand operation section 8.
• a path from the power supply section 32 to the charging / discharging circuit section 22 includes a photo-power blur having a diode. Therefore, when the AC voltage exceeds the voltage at which the diode can conduct, current starts flowing in the path. Therefore, charging starts at the time when the AC voltage deviates from the zero crossing of the AC voltage.
• the charge / discharge circuit section 22 detects a charging voltage charged in the capacitor. When the detected charging voltage reaches a set voltage set so that the ON signal is output to the predetermined driving unit 20, the charging / discharging circuit unit 22 sends a control signal to the driving unit 20. Is output.
• the control of the output timing of the ON signal to the drive unit 20 controls the time from the zero crossing of the AC power supply to when the drive unit 20 is turned on. By controlling the time until the drive unit 20 turns on, The conductivity of the power supply changes. As a result, the drive of the electric blower 18 is controlled.
• the drive unit 20 supplies the voltage of the AC power supply to the electric blower 18 according to the control signal. Then, the drive unit 20 supplies the voltage to the electric blower 18 until the voltage of the AC power supply reaches the next zero cross. The above control is repeated every half cycle. The output of the electric blower 18 increases as the control signal approaches the zero cross.
• the sensor 36 detects whether the temperature inside the vacuum cleaner 100 is equal to or higher than a set value. What is detected by the sensor 36 is not limited to temperature. For example, pressure may be used. Alternatively, both temperature and pressure detection may be performed.
• the control section 24 changes the resistance value of the resistor 30 included therein by the resistance variable section 40 in response to the detection by the sensor 36.
• the resistance variable section 40 that changes the resistance under the control of the control section 24 includes a switch for electrically connecting one end and the other end of the resistor 30. As a switch, it is preferable to use a photo-coupler. For example, in the variable resistance value section 40, a resistance antibody 30 having a resistance value and a photocoupler 26 having a light emitting section 26a and a light receiving section 26b therein are connected in parallel.
• the photo power blur 26 is an isolation circuit in which the light emitting part 26a and the light receiving part 26b are electrically insulated using a space or an optical fiber.
• the photocoupler 26 has a light emitting unit 26a that emits light in accordance with conduction, and a light receiving unit 26b that conducts in response to light emitted by the light emitting unit 26a.
• the light receiving section 26 b is provided for conduction on a path between one end and the other end of the resistor 30.
• the light emitting section 26a is, for example, but not limited to, a photodiode.
• the light receiving section 26b is not particularly limited, but is, for example, a phototransistor.
• the control section 24 controls light emission by the light emitting section 26a.
• the control unit 24 normally energizes the light-emitting unit 26 a of the photo power blur 26 after the operation unit 8 is turned on. At this time, the charging current for charging the capacitor in the charging / discharging circuit section 22 flows through the light receiving section 26 b of the photocoupler 26.
• the control unit 24 stops the light emission by the light emitting unit 26a as the input detected by the sensor 36 becomes equal to or more than the set value. That is, the current flowing through the light receiving section 26b is cut off. Charge current Flows through the resistor 30, so that the time required for the charging voltage to reach the set voltage becomes longer. As a result, the conductivity of the AC power supply decreases, so that the output of the electric blower 18 becomes smaller than when the current flows through the light receiving unit 26b.
• control unit 24 causes the alarm display device 38 to display an alarm display as the input detected by the sensor 36 becomes equal to or more than the set value.
• the control section 24 can detect whether or not the path from the power supply section 32 to the charging / discharging circuit section 22 is conducting by the conduction detecting section 42. That is, the control unit 24 can detect whether or not the hand operation unit 8 is off.
• the continuity detecting section 42 is a photocoupler 28 having a light emitting section 28a and a light receiving section 28b inside.
• the photocoupler 28 is an isolation circuit in which the light emitting unit 26a and the light receiving unit 26b are electrically insulated using a space or an optical fiber.
• the photocoupler 28 includes a light emitting unit 28 a provided on a path from the resistor 30 and the power supply unit 32 to the charging / discharging circuit unit 22, and a light receiving unit that becomes conductive in response to light from the light emitting unit 28 a.
• Part 28b the light emitting section 28a is, for example, but not limited to, a photodiode.
• the light receiving section 28b is not particularly limited, but is, for example, a phototransistor.
• the control unit 24 determines that the hand operation unit 8 is off when the light receiving unit 28b is in the cutoff state.
• the power supply unit 34 is a power supply that supplies power to the control unit 24.
• FIG. 5 is a flowchart showing an operation when performing power down control of the electric vacuum cleaner 100 in the embodiment of the present invention.
• step S01 the user performs an operation on hand operation unit 8 (step S01).
• the user turns on the switch included in the hand operation unit 8 or selects strong or weak.
• the phase control operation is started in the charge / discharge circuit section 22 (step S02).
• a capacitor included in the charge / discharge circuit unit 22 is charged.
• the control unit 24 determines whether the charging voltage of the capacitor is equal to or higher than the set value.
• the charging / discharging circuit section 22 continues charging.
• the charging / discharging circuit unit 22 outputs a control signal to the driving unit 20.
• the drive unit 20 supplies the voltage of the AC power supply to the electric blower 18 according to the control signal, and operates the electric blower 18. Then, the above-described phase control is repeated every half cycle of the AC voltage.
• control unit 24 determines whether or not the input of the temperature detected by the sensor 36 is the setting: or more (step S O 3).
• step S03 When it is determined in step S03 that the input detected by the sensor 36 is equal to or smaller than the set value, the control unit 24 continues the normal operation.
• step SO3 If it is determined in step SO3 that the input detected by the sensor 36 is equal to or greater than the set value, the control unit 24 cuts off the current of the light emitting unit 26a of the photocoupler 26 (step SO 4).
• the photo power blur 26 as the current of the light emitting unit 26a is cut off, the current of the light receiving unit 26b is cut off. Then, since the current flows through the resistor 30, the charge / discharge cycle in the charge / discharge circuit unit 22 becomes longer. As a result, the conductivity of the AC power source is reduced, and the output of the electric blower 18 is power-down controlled.
• the control unit 24 allows the current to flow to the light emitting unit 26a.
• the light receiving section 26b is also turned on according to the conduction of the light emitting section 26a, so that the charging current does not decrease. Therefore, charging and discharging can be performed based on the charging and discharging cycle determined by the nodes of the resistor 8a and the resistor 8b which are selectively connected to the hand operation unit 8.
• the control unit 24 cuts off the current to the light emitting unit 26a of the photo power blur 26.
• the light receiving section 26b In response to the interruption of the current of the light emitting section 26a, the light receiving section 26b is shut off. Therefore, the charging current flows through the resistor 30. As a result, the charge / discharge cycle becomes longer. Therefore, the conductivity of the AC voltage supplied from the drive unit 20 to the electric blower 18 decreases. As a result, power down control is performed.
• the electric vacuum cleaner 100 is capable of performing power-down control for the first predetermined time by turning on the switch of the hand operation unit 8.
• the photo power blur 28 detects that the switch of the hand operation unit 8 is turned on.
• the control unit 24 detects conduction of the light receiving unit 28 b of the photocoupler 28.
• the control unit 24 stops the light emission by the light emitting unit 26a of the photo power blur 26 until the first predetermined time elapses after the switch of the hand operation unit 8 is turned on. That is, in response to the interruption of the current to the light-emitting unit 26a, the light-receiving unit 26b is also cut off. Therefore, in the vacuum cleaner 100, current flows through the resistor 30. As a result, power down control can be performed. As a result, it becomes possible to control the rotational torque of the electric blower 18 to be small and to suppress the inrush current.
• the vacuum cleaner 100 is turned off by the hand operation unit 8 in order to eliminate the cause after the input detected by the sensor 36 becomes equal to or more than the set value.
• the operation unit 8 is turned on again after removing the cause, the input detected by the sensor 36 may not be lower than the set value.
• the sensor 36 is a temperature sensor, the temperature will not drop immediately even if the cause is removed.
• the vacuum cleaner 100 can also cancel the power-down control for the second predetermined time after starting.
• the control unit 24 displays an alarm display by the alarm display device 38 when the input detected by the sensor 36 is set ⁇ (directly or more. After the alarm display, the user operates the local operation unit 8 When the current is cut off, the alarm display indicates, for example, If not done, it will not be canceled. After removing the cause, the user resets the alarm display. Then, the user turns on the hand operation unit 8 again. At this time, if the hand operation unit 8 is turned on after the alarm display is released until the preset standby time elapses, the control unit 24 performs the normal operation for the second predetermined time.
• the control unit 24 detects the continuity of the light receiving unit 28b during the standby time set in advance and detects the detection by the sensor 36. Even if the input is more than the set value, the light is emitted by the light emitting unit 26a. Further, after canceling the power-down control until the second predetermined time has elapsed since the hand operation unit 8 was turned on, the control unit 24 determines that the input detected by the sensor 36 is smaller than the set value. In some cases, control of normal operation is performed as it is. However, when the input detected by the sensor 36 is equal to or more than the set value, the control unit 24 stops the light emission by the light emitting unit 26a. That is, the control unit 24 performs power down control again.
• the control unit 24 determines that the input from the sensor 36 is equal to or greater than the set value.
• the warning display device 38 such as an LED (Light Emitting Diode) or a buzzer is not displayed.
• the control unit 24 When the control unit 24 once stops the light emission by the light emitting unit 26a, the current flows through the light receiving unit 28b regardless of the input detected by the sensor 36 thereafter. During this time, the light emission by the light emitting unit 26a is stopped. That is, once the power down control is started, the control unit 24 continues the power down control until the hand operation unit 8 is turned off. This is near the set value of the input from the sensor 36, and when the input of the sensor 36 fluctuates, the electric blower 18 repeats the normal operation and the power down control operation. As a result, the user may feel uneasy. As described above, according to the present invention, the power down control of the electric blower 18 is performed as the temperature becomes equal to or higher than the set value without using a microcomputer. As a result, it is possible to suppress the occurrence of an unsafe phenomenon or the like of the vacuum cleaner 100 due to a rise in temperature or pressure.
• the inrush current can be suppressed to a small value. As a result, safety can be ensured without affecting other electric devices and without causing user anxiety.
• the power-down control is released for the second predetermined time by turning on the hand operation unit 8 from off to on even if the input from the sensor 36 is equal to or more than the set value.
• control according to the input from the sensor 36 is performed. That is, if the input from the sensor 36 is equal to or more than the set value even after the second predetermined time has elapsed, the power down control is performed, so that safe control is possible.
• the alarm by the LED or the buzzer is also canceled or stopped, so that the user is not discomforted.
• the power down control is controlled so that the normal operation and the power down control operation are repeated to give anxiety to the user. Control is possible without.

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• Engineering & Computer Science (AREA)
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• Electric Vacuum Cleaner (AREA)

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Citations (7)

• 2003
  • 2003-02-25 JP JP2003047087A patent/JP2004261239A/ja active Pending
• 2004
  • 2004-02-20 WO PCT/JP2004/002044 patent/WO2004075711A1/ja not_active Ceased
  • 2004-02-20 CN CNA2004800051883A patent/CN1753638A/zh active Pending
  • 2004-02-20 KR KR1020057015841A patent/KR100708366B1/ko not_active Expired - Fee Related

Patent Citations (7)

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