EP0285801A1 - Dispositif de commande à distance du moteur d'un aspirateur situé dans la poignée du tube suceur - Google Patents
Dispositif de commande à distance du moteur d'un aspirateur situé dans la poignée du tube suceur Download PDFInfo
- Publication number
- EP0285801A1 EP0285801A1 EP88103022A EP88103022A EP0285801A1 EP 0285801 A1 EP0285801 A1 EP 0285801A1 EP 88103022 A EP88103022 A EP 88103022A EP 88103022 A EP88103022 A EP 88103022A EP 0285801 A1 EP0285801 A1 EP 0285801A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control
- input
- rectifier
- voltage
- comparator
- 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
Links
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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
- A47L9/2894—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
- A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
- A47L9/2842—Suction motors or blowers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2857—User input or output elements for control, e.g. buttons, switches or displays
Definitions
- the invention relates to a device for remote control of the blower motor of a vacuum cleaner from the handle of the suction hose according to the preamble of claim 1.
- Such a device is known from DE-OS 32 22 458.
- this known remote control device only the power of the blower motor can be controlled via the adjustable resistor arranged on the handle and connected to the speed control circuit of the blower motor via a two-wire line.
- the invention has for its object to provide a display for a necessary filter change in addition to the power control of the blower motor while maintaining the two-wire control line.
- a periodic control of the semiconductor switches is achieved in that they are connected together to the control output of an operational amplifier, one control input of which is connected directly to one pole of the control rectifier designed as a single-phase bridge rectifier and the other control input of which is connected to a via a voltage divider via a decoupling diode from the Control rectifier fed, connected with smoothing DC voltage circuit.
- a pulsating DC voltage is thus present at one control input of the operational amplifier and a continuous DC voltage is present at the other control input.
- a blocking signal for the semiconductor switch is present at the control output of the operational amplifier.
- This periodic control signal can also be used for the speed control of the blower motor, in that the input of the other comparator is connected to the output of the operational amplifier and to this input of the comparator a zener diode, an ohmic resistor and a capacitor are connected in parallel, the resistor and the capacitor connected to the input of the comparator and are decoupled from the Zener diode by a diode.
- the capacitor is charged by the control signal of the operational amplifier, charging by the zener diode being always predetermined to the same voltage level.
- the capacitor and the resistor are decoupled from the rest of the circuit by the diode, so that the capacitor can only discharge through the resistor. This creates a ramp-like voltage.
- the comparator sends a control signal to the speed control device. Because the control pulses emitted by the operational amplifier are obtained from the course of the rectified mains voltage, the control signal supplied by the comparator is synchronized with the mains voltage when the comparator is controlled by these control pulses.
- suction hose 2 with a handle connected to a suction hose 2 is designated.
- the suction hose 2 is connected to the suction nozzle of a vacuum cleaner housing 3, which contains a blower 4 with a blower motor 5.
- a vacuum cleaner housing 3 which contains a blower 4 with a blower motor 5.
- a two-wire control line 7 embedded in the suction hose leads from the board 6 to the handle 1.
- On this handle 1 there is a controllable resistance element 8 and a light-emitting diode 9 as a display element arranged and connected in series to the two-wire control line 7.
- the remote control device is supplied with voltage via a transformer 10 fed by the mains voltage U.
- the secondary winding of this transformer 10 feeds a single-phase bridge rectifier 11 serving as a control rectifier, to the positive pole of which a decoupling diode 12 is connected with its anode.
- a smoothing capacitor 13 and a Zener diode 14 connected in parallel with it are connected to the cathode side of the decoupling diode 12.
- a constant current source 15 is also connected with its input to the cathode side of the decoupling diode 12, that is to say to the smoothed DC voltage circuit.
- One wire of the constant current source 15 is connected and the other wire of the control line 7 is connected to the negative pole of the bridge rectifier 11.
- a peak value rectifier 17 with its input 18 is also connected to the output of the constant current source 15 via an input resistor 16.
- a first semiconductor switch 19 with its load path is connected between the input 18 of the peak value rectifier 17 and the negative pole of the bridge rectifier 11. With its control input, this first semiconductor switch 19 is connected via a control resistor 20 to the output of an operational amplifier 21.
- the operational amplifier 21 controls the first semiconductor switch 19 periodically on and off. In order to be able to generate periodic control pulses, the operational amplifier 21 is connected with its one control input to the positive pole of the bridge rectifier 11, this connection possibly also being able to take place via a voltage divider.
- the other control input of the operational amplifier 21 is connected to the smoothed direct voltage circuit (cathode side of the decoupling diode 12) via a voltage divider 22.
- the output of the operational amplifier 21 is also also led to the one input of a comparator 23.
- a zener diode 24, an ohmic resistor 25 and a capacitor 26 are connected in parallel between this input and the negative pole of the bridge rectifier 11, the resistor 25 and the capacitor 26 being decoupled from the zener diode 24 by a diode 27.
- the other input of the comparator 23 is connected to the output of the peak value rectifier 17.
- the output of the comparator 23 is connected to the base of a control transistor 29 arranged in the circuit of an optocoupler 28.
- a power stage 30, which is connected in series with the blower motor 5, is controlled by the optocoupler 28, which is used for electrical isolation between the mains voltage and the voltage circuit of the circuit board 6.
- the visual display of a necessary filter change can be controlled in two ways, depending on whether a pressure switch with an opener or a closer is provided. If a pressure switch with a break contact 31 is used, the switching path of this break contact 31 becomes the input resistor 16 of the peak value rectifier 17 connected in parallel. If, on the other hand, a pressure switch with a make contact 32 is available, then, as indicated by the broken line in FIG.
- the light-emitting diode 9 is connected to the direct voltage diagonal of a full-wave rectifier 34.
- the remote control device works as follows: By adjusting the resistance element 8 arranged on the handle 1, the level of the voltage drop across the series connection of this resistance element 8 and the light-emitting diode 9 is changed. Via the input resistor 16, this voltage is present at the input 18 of the peak value rectifier 17 when the first semiconductor switch 19 is blocked. As already mentioned, the first semiconductor switch 19 is periodically opened and closed by the operational amplifier 21.
- the periodic sequence of the control pulses of the operational amplifier 21 arises from the fact that the DC voltage of the bridge rectifier 11 pulsating in the form of sine half-waves is applied to one input of the operational amplifier 21 and the continuous DC voltage prevailing on the cathode side of the decoupling diode 12 is applied to the other input of the operational amplifier 21 .
- a corresponding response value for the operational amplifier 21 can be predetermined by the voltage divider 22.
- At the output of the operational amplifier 21 there is a blocking signal for the first semiconductor switch 19 when the one control input sinusoidal voltage is lower than the continuous DC voltage applied to the other control input. If the sinusoidal voltage rises above the value of the continuous DC voltage present at the other input, then a control signal for the first semiconductor switch 19 appears at the output of the operational amplifier 21.
- the semiconductor switch 19 is thus turned on and off in synchronism with the mains voltage U.
- the voltage pulse present at the input 18 of the peak value rectifier 17 during the blocking of the first semiconductor switch 19 causes a continuous DC voltage at the output of the peak value rectifier 17, the level of which depends on the level of the voltage pulse.
- the DC voltage appearing at the output of the peak value rectifier 17 is thus proportional to the voltage drop set by the resistance element 8.
- first semiconductor switch 19 Since the sinusoidal voltage present at one input of operational amplifier 21 is only smaller than the continuous DC voltage present at the other input of operational amplifier 21 for a short period of time, first semiconductor switch 19 is only blocked for a correspondingly short time. During the rest of the sine half-wave, the first semiconductor switch 19 is turned on and thus short-circuits the series connection of the resistance element 8 and the light-emitting diode 9 via the break contact 31 of the pressure switch. The light-emitting diode thus remains dark, since the short voltage pulse during the blocking time of the first semiconductor switch 19 is not sufficient to make the light-emitting diode 9 perceptibly light up.
- the pressure switch responds at a certain filling level of the filter bag, then the short-circuit circuit for the series connection of the resistance element 8 is opened by the opener 31 and the LED 9 interrupted.
- the light-emitting diode 9 now receives a current sufficient to light up and thereby signals a necessary filter change.
- the power control of the blower motor is possible.
- the voltage pulses generated by the opening and closing of the first semiconductor switch 19 at the input 18 of the peak value rectifier 17 are converted into a continuous DC voltage with a proportional amplitude.
- This DC voltage which is proportional to the voltage drop set by the resistance element 8, is fed to one input of the comparator 23.
- this comparator 23 there is a comparison of the continuous DC voltage, the level of which can be changed by resetting the resistance element 8, with the ramp-shaped voltage present at the other input.
- This ramp-shaped voltage arises from the fact that the capacitor 26 is charged by a positive control pulse from the operational amplifier 21.
- the upstream diode 24 limits the charging of the capacitor 26 to a constant voltage level.
- the capacitor 26 begins to discharge via the ohmic resistor 25, the discharge circuit being decoupled from the rest of the circuit by the diode 27. Due to the discharge of the capacitor 26, the voltage present at the relevant control input of the comparator 23 drops. As soon as this voltage drops below the level of the voltage present at the other control input, the comparator 23 emits a control signal by which the control transistor 29 is turned on and thereby activates the optocoupler 28, which in turn controls the power stage 30 of the blower motor 5 accordingly.
- a pressure switch with a closer 32 is used instead of a pressure switch with an opener 31, then a modification of the circuit is necessary.
- a second semiconductor switch 33 is provided in this case, which is connected in parallel with the series circuit with its load path (collector-emitter path).
- the control path (base-emitter path) of the second semiconductor switching element 33 is short-circuited by the make contact 32 of the pressure switch, and the second semiconductor switch 33 is thereby permanently blocked.
- the light-emitting diode 9 thus has a current duration sufficient for it to light up.
- the second semiconductor switch 33 is periodically opened and closed by the operational amplifier 21 via the base resistor 35 connected upstream of its base.
- the correspondingly short blocking phase of the second semiconductor switch 33 is not sufficient to cause the light emitting diode 9 to light up.
- the first semiconductor switch 19 is driven in parallel with the second semiconductor switch 33 by the operational amplifier 21, and the voltage pulses necessary for the peak value rectifier 17 are thus generated. Even after the pressure switch has responded and as a result caused blocking of the second semiconductor switch 33, the periodic control of the first semiconductor switch 19 is maintained, so that the performance of the blower motor 5 can still be controlled by adjusting the resistance element 8.
- the remote control device described thus comes from the handle 1 for the power control of the blower motor 5 and the simultaneous display of a necessary filter change on the handle 1 with a two-wire control line 7.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Vacuum Cleaner (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Catching Or Destruction (AREA)
- Control Of Ac Motors In General (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88103022T ATE61921T1 (de) | 1987-03-11 | 1988-02-29 | Einrichtung zur fernsteuerung des geblaesemotors eines staubsaugers vom handgriff des saugschlauches aus. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3707834 | 1987-03-11 | ||
DE3707834 | 1987-03-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0285801A1 true EP0285801A1 (fr) | 1988-10-12 |
EP0285801B1 EP0285801B1 (fr) | 1991-03-27 |
Family
ID=6322792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88103022A Expired - Lifetime EP0285801B1 (fr) | 1987-03-11 | 1988-02-29 | Dispositif de commande à distance du moteur d'un aspirateur situé dans la poignée du tube suceur |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0285801B1 (fr) |
AT (1) | ATE61921T1 (fr) |
DE (1) | DE3862137D1 (fr) |
DK (1) | DK125288A (fr) |
FI (1) | FI84877C (fr) |
NO (1) | NO881097L (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0375327A1 (fr) * | 1988-12-19 | 1990-06-27 | Sanyo Electric Co., Ltd. | Aspirateur de poussière |
WO1990009139A1 (fr) * | 1989-02-14 | 1990-08-23 | Aktiebolaget Electrolux | Agencement pour aspirateur |
FR2686721A1 (fr) * | 1992-01-28 | 1993-07-30 | Hoover | Dispositif de telecommande a ultrasons pour aspirateur. |
US5507067A (en) * | 1994-05-12 | 1996-04-16 | Newtronics Pty Ltd. | Electronic vacuum cleaner control system |
WO1996025788A1 (fr) * | 1995-02-16 | 1996-08-22 | Philips Electronics N.V. | Dispositif de conversion d'une valeur de resistance en un signal de commande en fonction de la valeur de resistance, et appareil electrique integrant ledit dispositif |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3313700A1 (de) * | 1983-04-15 | 1984-10-25 | Gerhard 7262 Althengstett Kurz | Verfahren und vorrichtung zur manuellen saugleistungssteuerung eines staubsaugers |
EP0136357A1 (fr) * | 1983-02-12 | 1985-04-10 | Matsushita Electric Industrial Co., Ltd. | Aspirateur electrique |
US4514874A (en) * | 1981-03-12 | 1985-05-07 | Gerhard Kurz | Device for automatically controlling the suction power of a vacuum cleaner |
DE3431164A1 (de) * | 1984-02-08 | 1985-08-14 | Gerhard 7262 Althengstett Kurz | Staubsauger |
-
1987
- 1987-11-09 FI FI874941A patent/FI84877C/fi not_active IP Right Cessation
-
1988
- 1988-02-29 DE DE8888103022T patent/DE3862137D1/de not_active Expired - Fee Related
- 1988-02-29 EP EP88103022A patent/EP0285801B1/fr not_active Expired - Lifetime
- 1988-02-29 AT AT88103022T patent/ATE61921T1/de not_active IP Right Cessation
- 1988-03-09 DK DK125288A patent/DK125288A/da not_active Application Discontinuation
- 1988-03-11 NO NO881097A patent/NO881097L/no unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4514874A (en) * | 1981-03-12 | 1985-05-07 | Gerhard Kurz | Device for automatically controlling the suction power of a vacuum cleaner |
EP0136357A1 (fr) * | 1983-02-12 | 1985-04-10 | Matsushita Electric Industrial Co., Ltd. | Aspirateur electrique |
DE3313700A1 (de) * | 1983-04-15 | 1984-10-25 | Gerhard 7262 Althengstett Kurz | Verfahren und vorrichtung zur manuellen saugleistungssteuerung eines staubsaugers |
DE3431164A1 (de) * | 1984-02-08 | 1985-08-14 | Gerhard 7262 Althengstett Kurz | Staubsauger |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0375327A1 (fr) * | 1988-12-19 | 1990-06-27 | Sanyo Electric Co., Ltd. | Aspirateur de poussière |
US5023973A (en) * | 1988-12-19 | 1991-06-18 | Sanyo Electric Co., Ltd. | Vacuum cleaner |
WO1990009139A1 (fr) * | 1989-02-14 | 1990-08-23 | Aktiebolaget Electrolux | Agencement pour aspirateur |
FR2686721A1 (fr) * | 1992-01-28 | 1993-07-30 | Hoover | Dispositif de telecommande a ultrasons pour aspirateur. |
US5507067A (en) * | 1994-05-12 | 1996-04-16 | Newtronics Pty Ltd. | Electronic vacuum cleaner control system |
US5515572A (en) * | 1994-05-12 | 1996-05-14 | Electrolux Corporation | Electronic vacuum cleaner control system |
US5542146A (en) * | 1994-05-12 | 1996-08-06 | Electrolux Corporation | Electronic vacuum cleaner control system |
WO1996025788A1 (fr) * | 1995-02-16 | 1996-08-22 | Philips Electronics N.V. | Dispositif de conversion d'une valeur de resistance en un signal de commande en fonction de la valeur de resistance, et appareil electrique integrant ledit dispositif |
CN1050472C (zh) * | 1995-02-16 | 2000-03-15 | 皇家菲利浦电子有限公司 | 把阻值转换为基于该阻值的控制信号的装置及包括该装置的电气设备 |
Also Published As
Publication number | Publication date |
---|---|
DE3862137D1 (de) | 1991-05-02 |
NO881097L (no) | 1988-09-12 |
DK125288A (da) | 1988-09-12 |
FI84877B (fi) | 1991-10-31 |
ATE61921T1 (de) | 1991-04-15 |
DK125288D0 (da) | 1988-03-09 |
EP0285801B1 (fr) | 1991-03-27 |
FI874941A (fi) | 1988-09-12 |
NO881097D0 (no) | 1988-03-11 |
FI84877C (fi) | 1992-02-10 |
FI874941A0 (fi) | 1987-11-09 |
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