EP0678271B1 - Circuit pour régler la puissance d'aspiration d'un aspirateur de poussière - Google Patents

Circuit pour régler la puissance d'aspiration d'un aspirateur de poussière Download PDF

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Publication number
EP0678271B1
EP0678271B1 EP95105303A EP95105303A EP0678271B1 EP 0678271 B1 EP0678271 B1 EP 0678271B1 EP 95105303 A EP95105303 A EP 95105303A EP 95105303 A EP95105303 A EP 95105303A EP 0678271 B1 EP0678271 B1 EP 0678271B1
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EP
European Patent Office
Prior art keywords
control
control signal
circuit arrangement
circuit
arrangement according
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
EP95105303A
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German (de)
English (en)
Other versions
EP0678271A2 (fr
EP0678271A3 (fr
Inventor
Ehrenhardt Dipl.-Ing. Kaupa (Fh)
Elmar Dipl.-Ing. Freund (Fh)
Herbert Seufert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP0678271A2 publication Critical patent/EP0678271A2/fr
Publication of EP0678271A3 publication Critical patent/EP0678271A3/fr
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Publication of EP0678271B1 publication Critical patent/EP0678271B1/fr
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    • 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

Definitions

  • the invention relates to a circuit arrangement for suction power control a vacuum cleaner
  • DE-C-39 02 647 is an automatic device Suction power control of a vacuum cleaner known. At this device are two at different pressures responsive pressure switches provided, the switching pulses in corresponding to a connected control circuit Trigger functions. Because of the two pressure switches there is a "directional dependence" of the device, i.e. around to ensure proper functioning of the device, it must be at a lower and that at a higher pressure responsive pressure switches at a specific point the control circuit can be connected. It comes with the Assembly of the device to confuse this Connection options, then the device is inoperable. The use of two pressure switches also means an increased cost of materials.
  • the invention has for its object a circuit arrangement to control the suction power of a vacuum cleaner train that only one pressure switch is required and thus achieved an easier assembly and also a Inoperability of the circuit arrangement by Incorrect assembly is avoided.
  • This task is in a circuit arrangement according to the Claim 1 solved.
  • the control signal can be adjusted by hand of a potentiometer can be changed, whereby one constant power corresponding to the potentiometer setting of the blower motor is specified.
  • automatic Control can be changed by the pressure switch. Through the corresponding to the respective pressure conditions Opening and closing the pressure switch is between two for the control signal predetermined voltage values back and forth switched here, so that in the manner of a two-point control Blower motor is controlled in its output so that a constant or at least approximately constant vacuum is produced.
  • the comparator consists of one There is operational amplifier, at one input an sawtooth voltage synchronized with the mains voltage of the blower motor lies and at the other input the control signal is fed.
  • the network synchronous Sawtooth voltage with the control signal can be controlled by a Change the control signal in a simple way flawless, the performance of the blower motor accordingly changing control of the semiconductor switching element to reach.
  • Low-noise ignition pulses for the controllable semiconductor switching elements can be generated by the output of the operational amplifier via a differentiator with the an input of a comparator is connected to the other input has a fixed reference voltage.
  • the control signal can be operated manually Potentiometer or on the other hand using one to one Resistance of pressure switch connected in parallel changed become. In the latter case, there is an automatic Regulation of the negative pressure. Because of the respective negative pressure dependent opening or closing of the pressure switch the parallel resistor either on or off, so that the control signal between two voltage values commutes. Accordingly, the performance of the Blower motor increased or decreased, so that on average a constant or at least approximately constant negative pressure sets.
  • a switch can advantageously be provided with between manual adjustment using the potentiometer and automatic vacuum control can be switched can.
  • the power control of the blower motor is expedient due to additional resistances in the control signal circuit minimum and a maximum value limited.
  • the blower motor starts gently after switching on achieved in a simple manner in that by means of a series RC element an additional signal in the feed connector of the Control signal is fed to the comparator.
  • This member controlling the semiconductor switching element 2 is like can be seen from FIG 2, a control transistor 9, the Base 10 via a first control line 11 with the Ignition pulse part 8 is connected.
  • the power section 4 contains also a circuit part 12 for generating a DC supply voltage.
  • the circuit part 12 points to this a series RC element 13 to which two diodes 14 lie antiparallel in row.
  • the two diodes 14 are with their other connection side to one pole each Smoothing capacitor 15 connected.
  • To that Smoothing capacitor 15 is also a Zener diode 16 for Voltage stabilization connected in parallel.
  • the most Smoothing capacitor 15 applied voltage represents the DC supply voltage for the circuit arrangement.
  • the power section 4 also contains one at the supply voltage of the blower motor 1 lying first voltage divider 17, at the tap of a filter capacitor 18 with its a connection pole is connected. Through this filter capacitor 18 may be in the divided AC voltage contained DC voltage components suppressed. On the other connection pole 19 of the filter capacitor 18 is the Synchronous part 5 connected.
  • the synchronizing part 5 has one of a first and a second Operational amplifier 20 and 21 existing window comparator on.
  • the AC voltage supplied by the filter capacitor 18 is to the inverting input of the first Operational amplifier 20 and on the non-inverting Input of the second operational amplifier 21 placed.
  • With the two operational amplifiers are located at their other inputs 20 and 21 via divider resistors 22 on the DC supply voltage.
  • switched Window comparators occur at every zero crossing AC voltage present at its output 23 narrow Rectangular pulses. Through these impulses one becomes with his Collector-emitter path to a via a series resistor 24 connected to the DC supply voltage Capacitor 25 charging transistor 26 connected in parallel controlled.
  • controlled discharge transistor 26 becomes the capacitor 25 periodically over a lying in the collector-emitter circuit Discharge resistor 27 discharge. During the blocking period of the Discharge transistor 26 is charged again in each case Capacitor 25. This creates a sawtooth voltage educated. This sawtooth-shaped voltage is on the inverting input of a comparator Operational amplifier 28 placed. The non-inverting Input of this operational amplifier 28 is via a second Control line 29 is supplied with a control signal.
  • a differentiator 31 is connected, whose output 32 with the inverting input one Comparator 33 is connected to its non-inverting Input by means of a second voltage divider 34 a Reference voltage is set.
  • the output 35 of the comparator 33 is connected via the first control line 11 to the base 10 of the Control transistor 9 connected.
  • the control section 7 (FIG 4) contains a third voltage divider 36, at the tap 37 a potentiometer 38 and the Parallel connection of a control resistor 39 with a Pressure switch 40 is connected.
  • the one from the control resistor 39 and the pressure switch 40 existing parallel connection is also connected to ground via a control RC element 41.
  • Via a switch 42 the tap of the Potentiometer 38 or the common connection point 43 of the Control resistor 39 and the pressure switch 40 with the Control RC element 41 via a connection resistor 44 to the Control line 29 are switched.
  • a limiting resistor 45 connected with its one connection pole, whose other terminal is connected to ground. With the control line 29 an additional control part 46 is connected.
  • This additional control part 46 contains a series RC element 47 and one of a fixed resistor 48 and a PTC resistor 51 existing voltage dividers.
  • the tap of the series RC link 47 and the voltage divider is in each case one Decoupling diode 49 or 50 with the control line 29 connected.
  • the circuit arrangement works as follows: If the vacuum cleaner is switched to the mains voltage by means of a switch (not shown), then the required DC supply voltage is provided via the circuit part 12. Via the first voltage divider 17 and the filter capacitor 18, an AC voltage which is lower than the mains voltage but is synchronous with it is available. As already described, a sawtooth voltage which is synchronous with the AC voltage is generated by means of the window comparators 20 and 21 and the discharge transistor 26 controlled by them by correspondingly charging and discharging the capacitor 25. A "high" signal is generated at the output 30 of this operational amplifier 28 by this sawtooth voltage at the inverting input of the operational amplifier 28 acting as a comparator.
  • This "high” signal remains until the sawtooth voltage reaches the value of the control signal present at the non-inverting input of this operational amplifier 28. At this moment, the output signal of the operational amplifier 28 changes to "low". As a result of this signal change, the differentiator 31 generates a narrow needle pulse.
  • the needle pulses emanating from the differentiating element 31 are converted by the comparator 33 into corresponding narrow rectangular pulses, which represent the control pulses for the control transistor 9 and are supplied to the base 10 of the control transistor 9 via the first control line 11.
  • the control transistor 9 is turned on for the duration of such a rectangular pulse and thus fires the semiconductor switching element 2 each time.
  • That of the operational amplifier 28 acting as a comparator supplied control signal can be adjusted in different ways or be specified.
  • the setting of this control signal can be done by hand using the potentiometer 38 become.
  • the blower motor 1 is defined Power controlled as a result of being fixed by the potentiometer 38 predetermined control signals on the acting as a comparator Operational amplifier 28 always at the same phase the sawtooth voltage the signal switching at its output 30 takes place.
  • the semiconductor switching element 2 always with the same potentiometer setting corresponding phase angle ignited.
  • the switch 42 in its other switching position and switched to the common connection point 43, so the control signal is now specified by the Pressure switch 40 and the control resistor 39.
  • the response pressure of the pressure switch 40 is reached, this closes.
  • the Control resistor 39 bridges and the voltage of the control signal elevated. This leads to a later ignition of the Semiconductor switching element 2, so that the motor power drops.
  • the pressure switch 40 opens again and thus switches the control resistor 39 a.
  • control part 7 is due to the resistance part connected to ground of the third voltage divider 36 is a minimum value the voltage on the blower motor.
  • the limit on a maximum value of the motor voltage is given by the Limiting resistance 45.
  • the additional control part 46 still a starting current limitation and causes overtemperature protection.
  • For starting current limitation serves the series RC element 47 of the control part 46.
  • About the capacitor of this series RC element 47 is in Switch-on instant of the vacuum cleaner the voltage of the control signal raised so that the firing angle of the semiconductor switching element increases and thus the starting current is reduced.
  • the voltage of the Control signal With progressive charging of the capacitor of the series RC element 47, the voltage of the Control signal, which is a reduction in the ignition angle of the Semiconductor switching element 2 and thus an increase in Engine performance.
  • Overload protection is provided by a fixed resistor 48 and a PTC resistor 51 existing voltage divider of the Control part 46 reached. With appropriate heating of the Blower motor 1, the resistance of the PTC resistor 51 rises on. Reaches the voltage at the tap of this voltage divider 48; 51 a higher value than the voltage of the second Control line 29 pending control signal is via the Decoupling diode 50 this higher voltage in the second Control line 29 effective. This leads over to the comparator acting operational amplifier 28 and this downstream controls to enlarge the Firing angle of the semiconductor switching element 2 and thus too a reduction in the power of the blower motor 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Control Of Ac Motors In General (AREA)

Claims (9)

  1. Circuit pour régler la puissance d'aspiration d'un aspirateur de poussière, dont le moteur du ventilateur (1) est associé à un élément de circuit semi-conducteur (2) pouvant être commandé à l'aide d'un circuit d'amorçage, dans ce circuit le circuit d'amorçage comprend un comparateur (28), auquel est amené un signal se modifiant périodiquement et un signal de commande réglable et à partir de son signal de sortie les impulsions de commande pour l'élément de circuit semi-conducteur (2) sont formées et le signal de commande pour le circuit d'amorçage peut être réglé facultativement à la main à chaque fois à une certaine valeur ou peut être commuté à l'aide d'un interrupteur à poussoir (40) entre deux valeurs différentes prédéfinies.
  2. Circuit selon la revendication 1, dans lequel le comparateur se compose d'un amplificateur opérationnel (28), à une entrée duquel est appliquée une tension en dents de scie synchronisée avec la tension de réseau du moteur de ventilateur (1) et à l'autre entrée duquel est amené le signal de commande.
  3. Circuit selon la revendication 2, dans lequel la sortie de l'amplificateur opérationnel (28) est reliée par un élément différenciateur (31) à une entrée d'un comparateur (33), à l'autre entrée de celui-ci se trouve une tension de référence fixe.
  4. Circuit selon la revendication 1, 2 ou 3, dans lequel le signal de commande peut être réglé à l'aide d'un potentiomètre (38).
  5. Circuit selon la revendication 1, 2 ou 3, dans lequel le signal de commande peut être réglé à l'aide d'un interrupteur à poussoir (40) situé en parallèle à une résistance de commande (39).
  6. Circuit selon la revendication 4 et 5, dans lequel le raccord d'amenée pour le signal de commande peut être relié à l'aide d'un commutateur (42) facultativement au potentiométre (38) ou au circuit parallèle de la résistance de commande (39) et de l'interrupteur à poussoir (40).
  7. Circuit selon la revendication 4, 5 ou 6, dans lequel des résistances supplémentaires (36 ; 45) sont disposées dans le circuit du signal de commande, par lesquelles le signal de commande est limité à une valeur minimale et une valeur maximale.
  8. Circuit selon l'une ou plusieurs des revendications précédentes, dans lequel, à l'aide d'un élément RC en série (47), un signal supplémentaire est amené au comparateur (28) dans le raccord d'amenée du signal de commande.
  9. Circuit selon l'une ou plusieurs des revendications précédentes, dans lequel un autre signal supplémentaire est amené dans le raccord d'amenée du signal de commande à l'aide d'un diviseur de tension formé d'une résistance fixe (48) et d'une résistance à coefficient positif de température (51).
EP95105303A 1994-04-21 1995-04-07 Circuit pour régler la puissance d'aspiration d'un aspirateur de poussière Expired - Lifetime EP0678271B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4413976 1994-04-21
DE4413976 1994-04-21

Publications (3)

Publication Number Publication Date
EP0678271A2 EP0678271A2 (fr) 1995-10-25
EP0678271A3 EP0678271A3 (fr) 1998-07-08
EP0678271B1 true EP0678271B1 (fr) 2000-10-18

Family

ID=6516098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95105303A Expired - Lifetime EP0678271B1 (fr) 1994-04-21 1995-04-07 Circuit pour régler la puissance d'aspiration d'un aspirateur de poussière

Country Status (3)

Country Link
EP (1) EP0678271B1 (fr)
DE (1) DE59508787D1 (fr)
ES (1) ES2152997T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006009233A1 (de) * 2006-02-28 2007-09-06 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur Saugleistungsregelung eines Staubsaugers
DE202008002310U1 (de) 2008-02-20 2009-06-25 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur automatischen Saugleistungsregelung eines Staubsaugers
WO2009103585A1 (fr) 2008-02-20 2009-08-27 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de régulation automatique de la puissance d’aspiration d’un aspirateur
DE102008010068A1 (de) 2008-02-20 2009-08-27 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur automatischen Saugleistungsregelung eines Staubsaugers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19937626A1 (de) 1999-08-10 2001-02-15 Bsh Bosch Siemens Hausgeraete Schaltungsanordnung zur Leistungssteuerung eines elektrischen Verbrauchers
DE102011006539B4 (de) * 2011-03-31 2019-11-14 BSH Hausgeräte GmbH Staubsauger und Verfahren zum betriebsdauerabhängigen Betreiben eines Staubsaugers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030059C2 (de) * 1980-08-08 1984-06-07 Progress-Elektrogeräte Mauz & Pfeiffer GmbH & Co, 7000 Stuttgart Staubsauger
DE3112376A1 (de) * 1981-03-28 1982-11-18 Miele & Cie GmbH & Co, 4830 Gütersloh Staubsauger, insbesondere bodenstaubsauger
JPS59153490A (ja) * 1983-02-16 1984-09-01 Sanyo Electric Co Ltd 電気掃除機
DE3313700C2 (de) * 1983-04-15 1985-04-25 Gerhard 7262 Althengstett Kurz Vorrichtung zur manuellen, pneumatischen Betätigung eines einen elektrischen Motor aufweisenden Staubsaugers
SE449947B (sv) * 1985-10-04 1987-06-01 Electrolux Ab Anordning vid dammsugare
DE3914306A1 (de) * 1988-12-16 1990-06-28 Interlava Ag Vorrichtung zur regelung und/oder anzeige des betriebs von staubsaugern

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006009233A1 (de) * 2006-02-28 2007-09-06 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur Saugleistungsregelung eines Staubsaugers
WO2007098979A1 (fr) 2006-02-28 2007-09-07 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de regulation de la PUISSANCE d'aspiration d'un aspirateur
DE102006009233B4 (de) * 2006-02-28 2008-01-10 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur Saugleistungsregelung eines Staubsaugers
DE202008002310U1 (de) 2008-02-20 2009-06-25 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur automatischen Saugleistungsregelung eines Staubsaugers
WO2009103585A1 (fr) 2008-02-20 2009-08-27 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de régulation automatique de la puissance d’aspiration d’un aspirateur
DE102008010068A1 (de) 2008-02-20 2009-08-27 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur automatischen Saugleistungsregelung eines Staubsaugers
DE102008010068B4 (de) * 2008-02-20 2013-02-28 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur automatischen Saugleistungsregelung eines Staubsaugers

Also Published As

Publication number Publication date
EP0678271A2 (fr) 1995-10-25
ES2152997T3 (es) 2001-02-16
DE59508787D1 (de) 2000-11-23
EP0678271A3 (fr) 1998-07-08

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