EP2644073B1 - Sucker - Google Patents

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Publication number
EP2644073B1
EP2644073B1 EP13001510.0A EP13001510A EP2644073B1 EP 2644073 B1 EP2644073 B1 EP 2644073B1 EP 13001510 A EP13001510 A EP 13001510A EP 2644073 B1 EP2644073 B1 EP 2644073B1
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EP
European Patent Office
Prior art keywords
filter
current
pressure
processor
sucker
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.)
Active
Application number
EP13001510.0A
Other languages
German (de)
French (fr)
Other versions
EP2644073A1 (en
Inventor
Michael Seeling
Pablo Villalva Hernández-Franch
Eugen Bruntner
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.)
Electrostar GmbH
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Electrostar GmbH
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Publication date
Application filed by Electrostar GmbH filed Critical Electrostar GmbH
Priority to PL13001510T priority Critical patent/PL2644073T3/en
Publication of EP2644073A1 publication Critical patent/EP2644073A1/en
Application granted granted Critical
Publication of EP2644073B1 publication Critical patent/EP2644073B1/en
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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
    • A47L9/2805—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
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0095—Suction cleaners or attachments adapted to collect dust or waste from power tools
    • 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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/19—Means for monitoring filtering operation
    • 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
    • A47L9/20—Means for cleaning filters
    • 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
    • A47L9/2836—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
    • 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
    • A47L9/2868—Arrangements for power supply of vacuum cleaners or the accessories thereof

Definitions

  • the invention relates to a sucker according to the preamble of claim 1.
  • suckers serve to suck off the suction material occurring when working with the device connected to the vacuum cleaner instantaneously.
  • the device is connected via a suction hose to the suction port of the nipple.
  • the device is connected via a cable to the device socket of the vacuum cleaner.
  • the connected device may be, for example, a drill or a grinder.
  • the suction material that accumulates when working with such devices is immediately sucked off at the work area and reaches the container of the vacuum cleaner via the suction connection.
  • the sump remains hanging on the outside of the filter as the air passes through the filter and returns to the outside via the engine.
  • the filter is added so that filter cleaning is required. Frequently, the filter cleaning takes place at a time when the filter still has sufficient permeability.
  • the vacuum cleaner does not take into account the current / power consumption of the connected device. This results in the vacuum cleaner working with too high a suction power, even though the connected device itself only generates a small amount of suction material.
  • suckers EP 1 972 248 A2 .
  • EP 2 047 784 A2 It is known in suckers ( EP 1 972 248 A2 .
  • EP 2 047 784 A2 to use a current sensor that detects the current through the device socket.
  • the current value is evaluated by a processor to detect whether the connected tool is in operation or not.
  • the invention is based on the object, the generic vacuum cleaner in such a way that the filter cleaning can be adapted to the power / power consumption of the connected device.
  • the current / power consumption of the device connected to the device socket is measured by means of the current / power sensor. Based on the current / power consumption value, the processor outputs the signal for filter cleaning, which takes into account the current / power consumption of the connected device.
  • a filter cleaning in much larger time intervals is necessary than in a device with a high current / power consumption. In this way, the filter cleaning is initiated depending on the current / power consumption of the connected device only when this cleaning is actually required.
  • the signal provided by the current / power sensor to the processor may also be used to control and / or regulate the speed of the motor in accordance with the current / power consumption of the connected device.
  • a lower suction power is required as in a powerful device in which a much larger amount of suction material, such as drilling dust, grinding dust and the like is obtained.
  • the user of the vacuum cleaner therefore does not need to know the power of the connected device; Rather, the sucker according to the invention automatically adjusts to the current / power consumption of the connected device.
  • a table is advantageously stored in the different current / power consumption values of devices to be connected and the associated Speed values of the motor of the vacuum cleaner and / or the period of time are specified when the signal for filter cleaning is to be delivered.
  • the pressure in the flow direction behind the filter of Sucker detected with the help of at least one pressure sensor. It provides a corresponding pressure signal to the processor which, in conjunction with the current / power consumption value, is used to cause the processor to generate the filter cleaning signal.
  • the nipple according to the invention has two pressure sensors which detect the pressure in front of and behind the filter and deliver the corresponding pressure values to the processor.
  • the pressure absolute values can be recorded in these two air-tight sealed rooms. Due to the knowledge of the absolute values of the two pressures, the time of the beginning of the filter cleaning can be adapted very precisely to the degree of contamination of the filter.
  • the sensors and the processor are advantageously located on a common board, which is also advantageously housed in a sealed against the suction flow container space.
  • the invention will be explained in more detail with reference to an embodiment schematically illustrated in the drawing.
  • the drawing shows a schematic representation of a sucker according to the invention.
  • the nipple has a container 1, in which at least one filter 2 is housed.
  • the suction flow is generated by a motor 4. With the suction flow, the suction material produced by a device 6 connected to a suction connection 5 is sucked into the container 1.
  • the air flow with the suction material flows through the filter 2, on which the suction material is retained.
  • the air flow flows through the filter 2 and flows through the motor 4 in a known manner to the outside.
  • the sucker is provided in the embodiment with a vibrator 7, with which the filter 2 is shaken to shake off the suction material adhering to it. It then falls down into a collecting space within the container 1.
  • the vibrating device 7 is known in such suckers and is therefore not explained in detail.
  • the filter cleaning can also be achieved in that by switching corresponding (not shown) valves, an air flow opposite to the suction flow is generated. This air flow flows through the filter 2 from the inside to the outside, whereby the suction material adhering to the outside of the filter 2 is blown off and falls down into the collecting space.
  • the device 6 which is for example a tool such as a drill or grinder, is connected to a socket 8 of the nipple.
  • a suction hose (not shown) connects the device 6 to the suction connection 5, via which the suction material arising when working with the device is sucked into the container 1 of the suction device.
  • a board 9 is housed, on which a power / power sensor 10, two pressure sensors 11, 14 and a processor 12 sit.
  • a table 13 is stored with various parameters, with the filter in a manner to be described in response to the current / power consumption of the device 6 is initiated.
  • the current / power decrease of the device 6 connected to the socket 8 is detected as the value X.
  • a high power / current consumption of the device 6 leads to a correspondingly high amount of suction material per unit of time. This in turn means that the filter 2 is added relatively quickly because the suction material deposits on passing through the filter 2 on the outside.
  • a device 6 with a low power / power consumption then falls less suction material when working with the device 6 at. Accordingly, less suction material is sucked in the time unit, so that a cleaning of the filter 2 is required only at longer intervals.
  • the current / power consumption values detected by the current / power sensor 10 are supplied to the processor 12, which compares these values with the values stored in the table 13. For example, this table states that with a power / power consumption of, for example, up to 500 watts, a filter cleaning after ten minutes, with a power / power consumption of, for example, up to 1000 watts after five minutes and at a power / power consumption of, for example, more than 2000 watts after Minute must be performed.
  • the microprocessor 12 sends after the appropriate time a shutdown signal to the motor 4 and a switch-on to the vibrator 7. It puts the filter 2 in shaking movements, whereby the appended to the outside of the filter suction material is shaken off and down into a plenum of the container falls. The filter cleaning will automatically after a predetermined Time is over. Via the processor 12, the motor 4 can be turned on again.
  • the filter cleaning depending on the current / power consumption of the device 6 can be optimally performed.
  • the filter cleaning takes place only when it is actually required.
  • the speed of the motor 4 can be adapted to the connected device 6. Is the current / power consumption of the device 6 low, then falls when working with the device 6 less suction material. Then, a lower power of the nipple is sufficient to suck the suction material from the working area of the device 6.
  • Table 13 therefore also specifies the speed of the motor 4 to be set as a function of the current / power consumption of the connected device 6 as a parameter.
  • the processor 12 adjusts the rotational speed of the motor by means of the control in accordance with the value supplied by the current / power sensor 10.
  • the filter cleaning is initiated taking into account the current / power consumption of the device 6 and the pressure value determined by the pressure sensor 11.
  • the pressure sensor 11 is provided in the sucker so that it measures the pressure in the flow direction behind the filter 2.
  • the pressure value is supplied to the processor 12. Based on the values supplied by the current / power sensor 10 and the pressure sensor 11, he controls the filter cleaning.
  • the time of filter cleaning can be determined even more accurately. So not only the current / power consumption of the device 6 is detected, but also the pressure behind the filter 2.
  • the pressure behind the filter 2 is a measure of how much the filter 2 is added. As soon as the pressure value reaches a predetermined value, the motor 4 is switched off via the processor 12 and the vibrator 7 is switched on.
  • the pressure value is also stored as a parameter as a function of the current / power value, so that a filter cleaning is not started until it is actually required.
  • the filter cleaning is initiated when the value measured by the pressure sensor 11 exceeds a limit of, for example, 180 mbar.
  • the filter cleaning is started when reaching, for example, a pressure of 130 mbar.
  • the cleaning of the filter 2 is initiated only when the corresponding pressure value is measured by the pressure sensor 11 at the respective power / power consumption.
  • the drawing shows a further embodiment of how the pressure sensor 11 can be used.
  • the pressure sensor 11 is connected to two measuring points 15 and 16, which lie in the flow direction of the air flow in front of and behind the filter 2 and are formed by openings in the walls of these spaces.
  • the pressure sensor 11 is in this case a differential pressure sensor, which detects the pressure difference between the spaces in front of and behind the filter 2 via the two measuring points 15, 16.
  • the space lying in front of the filter 2 is the collecting space which is located in the container 1 and into which the suction material adhering to the filter 2 falls during the cleaning process.
  • the pressure difference is a measure of the degree of contamination of the filter 2.
  • the pressure difference is relatively low. However, the more the filter 2 is added, the greater the pressure difference.
  • the processor 12 to which the pressure difference value is supplied leads in conjunction with the current / power value supplied by the sensor 10 taking into account the stored value Parameters in Table 13 indicate the beginning of filter cleaning.
  • both pressure sensors 11 and 14 are used, of which the pressure sensor 11 is connected to the measuring point 16 in the flow direction behind the filter 2 and the pressure sensor 14 to a measuring point 17 in the flow direction of the suction air before the filter 2.
  • the pressure values of the two pressure sensors 11, 14 are supplied to the processor 12, which in turn initiates, in conjunction with the current / power value supplied by the sensor 10 taking into account the stored parameters in the table 13, the beginning of the filter cleaning.
  • the described embodiments of the nipple are characterized in that a filter cleaning can be carried out very quickly with respect to the degree of clogging of the filter.

Description

Die Erfindung betrifft einen Sauger nach dem Oberbegriff des Anspruches 1.The invention relates to a sucker according to the preamble of claim 1.

Solche Sauger dienen dazu, das beim Arbeiten mit dem an den Sauger angeschlossenen Gerät anfallende Sauggut augenblicklich abzusaugen. Hierzu ist das Gerät über einen Saugschlauch mit dem Sauganschluss des Saugers verbunden. Außerdem ist das Gerät über ein Kabel an die Gerätesteckdose des Saugers angeschlossen. Das angeschlossene Gerät kann beispielsweise ein Bohrer oder ein Schleifgerät sein. Das beim Arbeiten mit solchen Geräten anfallende Sauggut wird sofort am Arbeitsbereich abgesaugt und gelangt über den Sauganschluss in den Behälter des Saugers. Das Sauggut bleibt an der Außenseite des Filters hängen, während die Luft durch den Filter hindurch strömt und über den Motor wieder ins Freie tritt. Mit zunehmender Zeit wird das Filter zugesetzt, so dass eine Filterreinigung erforderlich ist. Häufig erfolgt die Filterreinigung zu einem Zeitpunkt, zu dem das Filter noch eine ausreichende Durchlässigkeit hat.Such suckers serve to suck off the suction material occurring when working with the device connected to the vacuum cleaner instantaneously. For this purpose, the device is connected via a suction hose to the suction port of the nipple. In addition, the device is connected via a cable to the device socket of the vacuum cleaner. The connected device may be, for example, a drill or a grinder. The suction material that accumulates when working with such devices is immediately sucked off at the work area and reaches the container of the vacuum cleaner via the suction connection. The sump remains hanging on the outside of the filter as the air passes through the filter and returns to the outside via the engine. As time goes on, the filter is added so that filter cleaning is required. Frequently, the filter cleaning takes place at a time when the filter still has sufficient permeability.

Insbesondere berücksichtigt der Sauger nicht die Strom/Leistungsaufnahme des angeschlossenen Gerätes. Dies führt dazu, dass der Sauger mit einer zu hohen Saugleistung arbeitet, obwohl das angeschlossene Gerät selbst nur wenig Sauggut erzeugt.In particular, the vacuum cleaner does not take into account the current / power consumption of the connected device. This results in the vacuum cleaner working with too high a suction power, even though the connected device itself only generates a small amount of suction material.

Es ist bei Saugern bekannt ( EP 1 972 248 A2 , EP 2 047 784 A2 ), einen Stromsensor einzusetzen, der den Strom durch die Gerätesteckdose erfasst. Der Stromwert wird durch einen Prozessor ausgewertet, um zu erkennen, ob das angeschlossene Werkzeug in Betrieb ist oder nicht.It is known in suckers ( EP 1 972 248 A2 . EP 2 047 784 A2 ), to use a current sensor that detects the current through the device socket. The current value is evaluated by a processor to detect whether the connected tool is in operation or not.

Der Erfindung liegt die Aufgabe zugrunde, den gattungsgemäßen Sauger so auszubilden, dass die Filterreinigung an die Strom/Leistungsaufnahme des angeschlossenen Gerätes angepasst werden kann.The invention is based on the object, the generic vacuum cleaner in such a way that the filter cleaning can be adapted to the power / power consumption of the connected device.

Diese Aufgabe wird beim gattungsgemäßen Sauger erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruches 1 gelöst.This object is achieved according to the invention with the characterizing features of claim 1 in the generic vacuum cleaner.

Beim erfindungsgemäßen Sauger wird die Strom/Leistungsaufnahme des an die Gerätesteckdose angeschlossenen Gerätes mit Hilfe des Strom/Leistungssensors gemessen. Anhand des Strom/Leistungsaufnahmewertes gibt der Prozessor das Signal zur Filterreinigung aus, das die Strom/Leistungsaufnahme des angeschlossenen Gerätes berücksichtigt. So ist bei einem Gerät mit einer geringen Strom/Leistungsaufnahme eine Filterreinigung in wesentlich größeren Zeitabständen notwendig als bei einem Gerät mit einer hohen Strom/Leistungsaufnahme. Auf diese Weise wird die Filterreinigung in Abhängigkeit von der Strom/Leistungsaufnahme des angeschlossenen Gerätes erst dann eingeleitet, wenn diese Reinigung tatsächlich erforderlich ist.With the vacuum cleaner according to the invention, the current / power consumption of the device connected to the device socket is measured by means of the current / power sensor. Based on the current / power consumption value, the processor outputs the signal for filter cleaning, which takes into account the current / power consumption of the connected device. Thus, in a device with a low power / power consumption, a filter cleaning in much larger time intervals is necessary than in a device with a high current / power consumption. In this way, the filter cleaning is initiated depending on the current / power consumption of the connected device only when this cleaning is actually required.

Darüber hinaus kann das vom Strom/Leistungssensor an den Prozessor gelieferte Signal auch dazu herangezogen werden, die Drehzahl des Motors entsprechend der Strom/Leistungsaufnahme des angeschlossenen Gerätes zu steuern und/oder zu regeln. Bei einem leistungsschwachen Gerät ist eine geringere Saugleistung erforderlich als bei einem leistungsstarken Gerät, bei dem eine wesentlich größere Menge an Sauggut, beispielsweise Bohrstaub, Schleifstaub und dergleichen anfällt. Der Anwender des Saugers muss somit die Leistung des angeschlossenen Gerätes nicht kennen; vielmehr stellt sich der erfindungsgemäße Sauger selbsttätig auf die Strom/ Leistungsaufnahme des angeschlossenen Gerätes ein.In addition, the signal provided by the current / power sensor to the processor may also be used to control and / or regulate the speed of the motor in accordance with the current / power consumption of the connected device. In a low-power device, a lower suction power is required as in a powerful device in which a much larger amount of suction material, such as drilling dust, grinding dust and the like is obtained. The user of the vacuum cleaner therefore does not need to know the power of the connected device; Rather, the sucker according to the invention automatically adjusts to the current / power consumption of the connected device.

Im Prozessor ist vorteilhaft eine Tabelle gespeichert, in der unterschiedliche Strom/Leistungsaufnahmewerte anzuschließender Geräte sowie die zugehörigen Drehzahlwerte des Motors des Saugers und/oder die Zeitdauer angegeben sind, wann das Signal zur Filterreinigung abgegeben werden soll. Vorteilhaft wird zusätzlich zur Strom/Leistungsaufnahme des angeschlossenen Gerätes auch der Druck in Strömungsrichtung hinter dem Filter des Saugers mit Hilfe wenigstens eines Drucksensors erfasst. Er liefert ein entsprechendes Drucksignal an den Prozessor, das in Verbindung mit dem Strom/Leistungsaufnahmewert dazu herangezogen wird, dass der Prozessor das Signal zur Filterreinigung erzeugt. Dadurch kann der Zeitpunkt der Filterreinigung noch besser an den tatsächlichen Grad der Verschmutzung des Filters angepasst werden, da nicht nur der Strom/Leistungsaufnahmewert, sondern auch der Druckwert zur Signalerzeugung herangezogen wird.In the processor, a table is advantageously stored in the different current / power consumption values of devices to be connected and the associated Speed values of the motor of the vacuum cleaner and / or the period of time are specified when the signal for filter cleaning is to be delivered. Advantageously, in addition to the current / power consumption of the connected device, the pressure in the flow direction behind the filter of Sucker detected with the help of at least one pressure sensor. It provides a corresponding pressure signal to the processor which, in conjunction with the current / power consumption value, is used to cause the processor to generate the filter cleaning signal. As a result, the time of the filter cleaning can be better adapted to the actual degree of contamination of the filter, since not only the current / power consumption value, but also the pressure value for signal generation is used.

Bei einer besonders vorteilhaften Ausführungsform hat der erfindungsgemäße Sauger zwei Drucksensoren, die den Druck vor sowie hinter dem Filter erfassen und die entsprechenden Druckwerte dem Prozessor überliefern. Für den Einsatz der beiden Drucksensoren können die Druckabsolutwerte in diesen beiden, luftdicht gegeneinander abgeschlossenen Räumen erfasst werden. Aufgrund der Kenntnis der Absolutwerte der beiden Drücke kann der Zeitpunkt des Beginns der Filterreinigung sehr genau an den Verschmutzungsgrad des Filters angepasst werden.In a particularly advantageous embodiment, the nipple according to the invention has two pressure sensors which detect the pressure in front of and behind the filter and deliver the corresponding pressure values to the processor. For the use of the two pressure sensors, the pressure absolute values can be recorded in these two air-tight sealed rooms. Due to the knowledge of the absolute values of the two pressures, the time of the beginning of the filter cleaning can be adapted very precisely to the degree of contamination of the filter.

Eine vorteilhafte Filterreinigung ist dann möglich, wenn das Filter mit einer Rütteleinrichtung versehen ist. Das vom Prozessor gelieferte Signal schaltet die Rütteleinrichtung ein, wodurch das Filter in so starke Rüttelbewegungen versetzt wird, dass das an der Außenseite des Filters anhaftende Sauggut abfällt.An advantageous filter cleaning is possible if the filter is provided with a vibrator. The signal provided by the processor turns on the vibrator, causing the filter to vibrate so strongly that the suction material adhering to the outside of the filter drops.

Die Sensoren und der Prozessor sitzen vorteilhaft auf einer gemeinsamen Platine, die darüber hinaus vorteilhaft in einem gegen den Saugstrom abgedichteten Behälterraum untergebracht ist.The sensors and the processor are advantageously located on a common board, which is also advantageously housed in a sealed against the suction flow container space.

Weitere Merkmale der Erfindung ergeben sich aus den weiteren Ansprüchen, der Beschreibung und der Zeichnung.Further features of the invention will become apparent from the other claims, the description and the drawings.

Die Erfindung wird anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispieles näher erläutert. Die Zeichnung zeigt in schematischer Darstellung einen erfindungsgemäßen Sauger.The invention will be explained in more detail with reference to an embodiment schematically illustrated in the drawing. The drawing shows a schematic representation of a sucker according to the invention.

Der Sauger hat einen Behälter 1, in dem wenigstens ein Filter 2 untergebracht ist. Der Saugstrom wird durch einen Motor 4 erzeugt. Mit dem Saugstrom wird das von einem an einen Sauganschluss 5 angeschlossenen Gerät 6 erzeugte Sauggut in den Behälter 1 gesaugt. Der Luftstrom mit dem Sauggut durchströmt das Filter 2, an dem das Sauggut zurückgehalten wird. Der Luftstrom durchströmt das Filter 2 und strömt über den Motor 4 in bekannter Weise nach außen.The nipple has a container 1, in which at least one filter 2 is housed. The suction flow is generated by a motor 4. With the suction flow, the suction material produced by a device 6 connected to a suction connection 5 is sucked into the container 1. The air flow with the suction material flows through the filter 2, on which the suction material is retained. The air flow flows through the filter 2 and flows through the motor 4 in a known manner to the outside.

Sobald das Filter 2 mit Sauggut zugesetzt sind, muss es gereinigt werden. Hierzu ist der Sauger im Ausführungsbeispiel mit einer Rütteleinrichtung 7 versehen, mit der das Filter 2 gerüttelt wird, um das an ihm anhaftende Sauggut abzuschütteln. Es fällt dann nach unten in einen Sammelraum innerhalb des Behälters 1. Die Rütteleinrichtung 7 ist bei solchen Saugern bekannt und wird darum nicht im Einzelnen erläutert.Once the filter 2 is added with suction material, it must be cleaned. For this purpose, the sucker is provided in the embodiment with a vibrator 7, with which the filter 2 is shaken to shake off the suction material adhering to it. It then falls down into a collecting space within the container 1. The vibrating device 7 is known in such suckers and is therefore not explained in detail.

Anstelle der Rütteleinrichtung 7 kann die Filterreinigung auch dadurch erreicht werden, dass durch Umschalten entsprechender (nicht dargestellter) Ventile ein Luftstrom entgegengesetzt zum Saugstrom erzeugt wird. Dieser Luftstrom strömt durch das Filter 2 von innen nach außen, wodurch das an der Außenseite des Filters 2 anhaftende Sauggut abgeblasen wird und nach unten in den Sammelraum fällt.Instead of the vibrating device 7, the filter cleaning can also be achieved in that by switching corresponding (not shown) valves, an air flow opposite to the suction flow is generated. This air flow flows through the filter 2 from the inside to the outside, whereby the suction material adhering to the outside of the filter 2 is blown off and falls down into the collecting space.

Das Gerät 6, das beispielsweise ein Werkzeug, wie ein Bohrer oder Schleifgerät ist, wird an eine Steckdose 8 des Saugers angeschlossen. Ein (nicht dargestellter) Saugschlauch verbindet das Gerät 6 mit dem Sauganschluss 5, über den das beim Arbeiten mit dem Gerät anfallende Sauggut in den Behälter 1 des Saugers gesaugt wird. Im Sauger ist eine Platine 9 untergebracht, auf der ein Strom/Leistungssensor 10, zwei Drucksensoren 11, 14 und ein Prozessor 12 sitzen.The device 6, which is for example a tool such as a drill or grinder, is connected to a socket 8 of the nipple. A suction hose (not shown) connects the device 6 to the suction connection 5, via which the suction material arising when working with the device is sucked into the container 1 of the suction device. In the sucker, a board 9 is housed, on which a power / power sensor 10, two pressure sensors 11, 14 and a processor 12 sit.

Im Prozessor 12 ist eine Tabelle 13 mit verschiedenen Parametern hinterlegt, mit der in noch zu beschreibender Weise in Abhängigkeit von der Strom/Leistungsaufnahme des Gerätes 6 eine Filterreinigung eingeleitet wird.In the processor 12, a table 13 is stored with various parameters, with the filter in a manner to be described in response to the current / power consumption of the device 6 is initiated.

Mit dem Strom/Leistungssensor 10 wird die Strom/Leistungsabnahme des an die Steckdose 8 angeschlossenen Gerätes 6 als Wert X erfasst. Eine hohe Leistungs/Stromaufnahme des Gerätes 6 führt zu einem entsprechend hohen Anfall an Sauggut pro Zeiteinheit. Dies wiederum führt dazu, dass das Filter 2 verhältnismäßig rasch zugesetzt wird, weil sich das Sauggut beim Durchtritt durch das Filter 2 an dessen Außenseite ablagert.With the current / power sensor 10, the current / power decrease of the device 6 connected to the socket 8 is detected as the value X. A high power / current consumption of the device 6 leads to a correspondingly high amount of suction material per unit of time. This in turn means that the filter 2 is added relatively quickly because the suction material deposits on passing through the filter 2 on the outside.

Ist an die Steckdose 8 ein Gerät 6 mit einer geringen Leistungs/Stromaufnahme angeschlossen, dann fällt weniger Sauggut beim Arbeiten mit dem Gerät 6 an. Dementsprechend wird in der Zeiteinheit auch weniger Sauggut angesaugt, so dass eine Abreinigung des Filters 2 nur in größeren Zeitabständen erforderlich ist.Is connected to the socket 8, a device 6 with a low power / power consumption, then falls less suction material when working with the device 6 at. Accordingly, less suction material is sucked in the time unit, so that a cleaning of the filter 2 is required only at longer intervals.

Die vom Strom/Leistungssensor 10 erfassten Strom/Leistungsaufnahmewerte werden dem Prozessor 12 zugeführt, der diese Werte mit den in der Tabelle 13 abgelegten Werten vergleicht. Beispielsweise ist in dieser Tabelle abgelegt, dass bei einer Strom/Leistungsaufnahme von beispielsweise bis 500 Watt eine Filterreinigung nach zehn Minuten, bei einer Strom/Leistungsaufnahme von beispielsweise bis 1000 Watt nach fünf Minuten und bei einer Strom/Leistungsaufnahme von beispielsweise über 2000 Watt nach einer Minute durchgeführt werden muss. Der Mikroprozessor 12 sendet nach Ablauf der entsprechenden Zeit ein Abschaltsignal an den Motor 4 sowie ein Einschaltsignal an die Rütteleinrichtung 7. Sie versetzt das Filter 2 in Rüttelbewegungen, wodurch das an der Außenseite des Filters anhängende Sauggut abgeschüttelt wird und nach unten in einen Sammelraum des Behälters fällt. Die Filterabreinigung wird automatisch nach einer vorgegebenen Zeit beendet. Über den Prozessor 12 kann der Motor 4 wieder eingeschaltet werden.The current / power consumption values detected by the current / power sensor 10 are supplied to the processor 12, which compares these values with the values stored in the table 13. For example, this table states that with a power / power consumption of, for example, up to 500 watts, a filter cleaning after ten minutes, with a power / power consumption of, for example, up to 1000 watts after five minutes and at a power / power consumption of, for example, more than 2000 watts after Minute must be performed. The microprocessor 12 sends after the appropriate time a shutdown signal to the motor 4 and a switch-on to the vibrator 7. It puts the filter 2 in shaking movements, whereby the appended to the outside of the filter suction material is shaken off and down into a plenum of the container falls. The filter cleaning will automatically after a predetermined Time is over. Via the processor 12, the motor 4 can be turned on again.

Denkbar ist auch eine Kombination mit Filterreinigungseinrichtungen, die es ermöglichen, während des Saugbetriebes zu reinigen. Das grundsätzliche Verfahren bleibt wie oben beschrieben; lediglich die Abschaltung des Motors 4 ist nicht notwendig.Also conceivable is a combination with filter cleaning devices, which make it possible to clean during the suction operation. The basic procedure remains as described above; only the shutdown of the motor 4 is not necessary.

Auf diese Weise kann die Filterreinigung in Abhängigkeit von der Strom/ Leistungsaufnahme des Gerätes 6 optimal durchgeführt werden. Die Filterreinigung erfolgt erst dann, wenn sie tatsächlich erforderlich ist.In this way, the filter cleaning depending on the current / power consumption of the device 6 can be optimally performed. The filter cleaning takes place only when it is actually required.

Darüber hinaus kann die Drehzahl des Motors 4 an das angeschlossene Gerät 6 angepasst werden. Ist die Strom/Leistungsaufnahme des Gerätes 6 gering, dann fällt beim Arbeiten mit dem Gerät 6 weniger Sauggut an. Dann reicht eine geringere Leistung des Saugers aus, um das Sauggut vom Arbeitsbereich des Gerätes 6 abzusaugen. In der Tabelle 13 ist darum auch die einzustellende Drehzahl des Motors 4 in Abhängigkeit von der Strom/ Leistungsaufnahme des angeschlossenen Gerätes 6 als Parameter angegeben. Der Prozessor 12 stellt die Drehzahl des Motors mit Hilfe der Steuerung entsprechend dem vom Strom/ Leistungssensor 10 gelieferten Wert ein.In addition, the speed of the motor 4 can be adapted to the connected device 6. Is the current / power consumption of the device 6 low, then falls when working with the device 6 less suction material. Then, a lower power of the nipple is sufficient to suck the suction material from the working area of the device 6. Table 13 therefore also specifies the speed of the motor 4 to be set as a function of the current / power consumption of the connected device 6 as a parameter. The processor 12 adjusts the rotational speed of the motor by means of the control in accordance with the value supplied by the current / power sensor 10.

Bei einer weiteren Ausführungsform wird die Filterreinigung unter Berücksichtigung der Strom/Leistungsaufnahme des Gerätes 6 sowie des vom Drucksensor 11 ermittelten Druckwertes eingeleitet. Der Drucksensor 11 ist so im Sauger vorgesehen, dass er den Druck in Strömungsrichtung hinter dem Filter 2 misst. Der Druckwert wird dem Prozessor 12 zugeführt. Anhand der vom Strom/Leistungssensor 10 und dem Drucksensor 11 gelieferten Werte steuert er die Filterreinigung. Bei der Erfassung des Druckwertes kann der Zeitpunkt der Filterreinigung noch genauer bestimmt werden. So wird nicht nur die Strom/Leistungsaufnahme des Gerätes 6 erfasst, sondern zusätzlich auch der Druck hinter dem Filter 2. Der Druck hinter dem Filter 2 ist ein Maß dafür, wie stark das Filter 2 zugesetzt ist. Sobald der Druckwert einen vorgegebenen Wert erreicht, wird über den Prozessor 12 der Motor 4 abgeschaltet und die Rütteleinrichtung 7 eingeschaltet. In der im Prozessor 12 abgelegten Tabelle 13 ist auch der Druckwert in Abhängigkeit vom Strom/Leistungswert als Parameter abgelegt, so dass eine Filterreinigung erst dann gestartet wird, wenn sie tatsächlich erforderlich ist. So wird beispielhaft bei einem Gerät mit einer Strom/Leistungsaufnahme von beispielsweise bis 500 Watt die Filterreinigung dann eingeleitet, wenn der vom Drucksensor 11 gemessene Wert einen Grenzwert von beispielsweise 180 mbar überschreitet. Bei einem Gerät 6 mit einer beispielhaften Strom/Leistungsaufnahme von bis zu 1000 Watt wird bei Erreichen beispielsweise eines Druckes von 130 mbar die Filterreinigung gestartet. Somit wird die Abreinigung des Filters 2 erst dann eingeleitet, wenn bei der jeweiligen Strom/Leistungsaufnahme der entsprechende Druckwert vom Drucksensor 11 gemessen wird.In a further embodiment, the filter cleaning is initiated taking into account the current / power consumption of the device 6 and the pressure value determined by the pressure sensor 11. The pressure sensor 11 is provided in the sucker so that it measures the pressure in the flow direction behind the filter 2. The pressure value is supplied to the processor 12. Based on the values supplied by the current / power sensor 10 and the pressure sensor 11, he controls the filter cleaning. When detecting the pressure value, the time of filter cleaning can be determined even more accurately. So not only the current / power consumption of the device 6 is detected, but also the pressure behind the filter 2. The pressure behind the filter 2 is a measure of how much the filter 2 is added. As soon as the pressure value reaches a predetermined value, the motor 4 is switched off via the processor 12 and the vibrator 7 is switched on. In the table 13 stored in the processor 12, the pressure value is also stored as a parameter as a function of the current / power value, so that a filter cleaning is not started until it is actually required. For example, in a device with a current / power consumption of, for example, up to 500 watts, the filter cleaning is initiated when the value measured by the pressure sensor 11 exceeds a limit of, for example, 180 mbar. In a device 6 with an exemplary current / power consumption of up to 1000 watts, the filter cleaning is started when reaching, for example, a pressure of 130 mbar. Thus, the cleaning of the filter 2 is initiated only when the corresponding pressure value is measured by the pressure sensor 11 at the respective power / power consumption.

Die Zeichnung zeigt ein weiteres Ausführungsbeispiel, wie der Drucksensor 11 eingesetzt werden kann. Bei diesem Ausführungsbeispiel ist der Drucksensor 11 mit zwei Messstellen 15 und 16 verbunden, die in Strömungsrichtung des Luftstromes vor und hinter dem Filter 2 liegen und durch Öffnungen in den Wandungen dieser Räume gebildet sind. Der Drucksensor 11 ist in diesem Falle ein Differenzdrucksensor, der über die beiden Messstellen 15, 16 die Druckdifferenz zwischen den Räumen vor und hinter dem Filter 2 erfasst. Der vor dem Filter 2 liegende Raum ist der Sammelraum, der sich im Behälter 1 befindet und in den das am Filter 2 anhaftende Sauggut beim Reinigungsvorgang fällt. Die Druckdifferenz ist ein Maß für den Verschmutzungsgrad des Filters 2. Ist er nur wenig verschmutzt, d. h. sind nur wenige abzuscheidende Teilchen an der Außenseite des Filters hängen geblieben, ist die Druckdifferenz verhältnismäßig gering. Je mehr sich jedoch das Filter 2 zusetzt, desto größer wird die Druckdifferenz. Sobald ein vorgegebener Grenzwert des Differenzdruckes erreicht wird, leitet der Prozessor 12, dem der Druckdifferenzwert zugeführt wird, in Verbindung mit dem vom Sensor 10 gelieferten Strom/Leistungswert unter Berücksichtigung der abgelegten Parameter in der Tabelle 13 den Beginn der Filterreinigung ein.The drawing shows a further embodiment of how the pressure sensor 11 can be used. In this embodiment, the pressure sensor 11 is connected to two measuring points 15 and 16, which lie in the flow direction of the air flow in front of and behind the filter 2 and are formed by openings in the walls of these spaces. The pressure sensor 11 is in this case a differential pressure sensor, which detects the pressure difference between the spaces in front of and behind the filter 2 via the two measuring points 15, 16. The space lying in front of the filter 2 is the collecting space which is located in the container 1 and into which the suction material adhering to the filter 2 falls during the cleaning process. The pressure difference is a measure of the degree of contamination of the filter 2. If it is only slightly dirty, ie only a few particles to be deposited on the outside of the filter stuck, the pressure difference is relatively low. However, the more the filter 2 is added, the greater the pressure difference. As soon as a predetermined limit value of the differential pressure is reached, the processor 12, to which the pressure difference value is supplied, leads in conjunction with the current / power value supplied by the sensor 10 taking into account the stored value Parameters in Table 13 indicate the beginning of filter cleaning.

Bei einer weiteren Ausführungsform werden beide Drucksensoren 11 und 14 eingesetzt, von denen der Drucksensor 11 an die Messstelle 16 in Strömungsrichtung hinter dem Filter 2 und der Drucksensor 14 an eine Messstelle 17 in Strömungsrichtung der Saugluft vor dem Filter 2 angeschlossen sind. Mit den beiden Drucksensoren 11, 14 ist es möglich, in den beiden Räumen vor und hinter dem Filter 2 jeweils den absoluten Druckwert zu ermitteln. Dadurch lässt sich sehr genau feststellen, wie stark das Filter 2 zugesetzt ist. Die Druckwerte der beiden Drucksensoren 11, 14 werden dem Prozessor 12 zugeführt, der wiederum in Verbindung mit dem vom Sensor 10 gelieferten Strom/Leistungswert unter Berücksichtigung der abgelegten Parameter in der Tabelle 13 den Beginn der Filterreinigung einleitet.In a further embodiment, both pressure sensors 11 and 14 are used, of which the pressure sensor 11 is connected to the measuring point 16 in the flow direction behind the filter 2 and the pressure sensor 14 to a measuring point 17 in the flow direction of the suction air before the filter 2. With the two pressure sensors 11, 14, it is possible to determine the absolute pressure value in each of the two spaces in front of and behind the filter 2. This makes it possible to determine very accurately how much the filter 2 is added. The pressure values of the two pressure sensors 11, 14 are supplied to the processor 12, which in turn initiates, in conjunction with the current / power value supplied by the sensor 10 taking into account the stored parameters in the table 13, the beginning of the filter cleaning.

Die beschriebenen Ausführungsformen des Saugers zeichnen sich dadurch aus, dass eine Filterreinigung sehr zeitnah bezüglich des Zusetzungsgrades des Filters durchgeführt werden kann.The described embodiments of the nipple are characterized in that a filter cleaning can be carried out very quickly with respect to the degree of clogging of the filter.

Claims (10)

  1. A sucker with at least one motor (4), with a suction connection (5) for a device (6) such as a tool which is to be connected to the sucker, with at least one filter (2) and a device socket (8) to which the device (6) can be electrically connected, wherein the sucker has at least one current/power sensor (10) which detects the current/power consumption of the device (6) connected to the device socket (8) and which is connected to a processor (12) which generates a signal to start cleaning the filter (2) on the basis of the current/power consumption value supplied by the current/power sensor (10), characterised in that for a device with low current/power consumption, filter cleaning is initiated at significantly larger time spans than for a device with high current/power consumption.
  2. The sucker according to claim 1,
    characterised in that the processor (12) generates the signal for filter cleaning based on a stored table (13) of different parameters.
  3. The sucker according to claim 1 or 2,
    characterised in that the signal is used to adjust the motor power.
  4. The sucker according to one of claims 1 to 3,
    characterised in that the processor (12) has at least one pressure sensor (11) connected to it, which detects the pressure in the direction of flow downstream of the filter (2), and supplies a corresponding pressure signal to the processor (12).
  5. The sucker according to claim 4,
    characterised in that the processor (12) generates the filter-cleaning signal on the basis of the current/power consumption and the pressure level, when the pressure for the current/power value reaches or exceeds a threshold value.
  6. The sucker according to one of claims 1 to 5,
    characterised in that the sucker is provided with two pressure sensors (11, 14), of which one pressure sensor (14) measures the pressure before, and the other pressure sensor (11) measures the pressure after, the filter (2).
  7. The sucker according to claim 6,
    characterised in that the two pressure sensors (11, 14) supply the pressure values to the processor (12), which supplies the filter-cleaning signal on the basis of the current/power value.
  8. The sucker according to claims 1 to 7,
    characterised in that the filter (2) is connected to a device (7) for cleaning the filter (2).
  9. The sucker according to claims 1 to 8,
    characterised in that the sensors (10, 11, 14) and the processor (12) are fitted to a circuit board (9).
  10. The sucker according to claim 9,
    characterised in that the circuit board (9) is housed in a chamber of the housing (1) sealed against the suction current.
EP13001510.0A 2012-03-27 2013-03-25 Sucker Active EP2644073B1 (en)

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DE102014005384A1 (en) * 2013-04-12 2014-10-16 Festool Group Gmbh & Co. Kg Suction device and method for operating a suction device
RU2654420C2 (en) 2014-03-20 2018-05-17 Альфред Кэрхер Гмбх Унд Ко. Кг Method of cleaning filter of vacuum cleaner and vacuum cleaner
DE102015214036A1 (en) * 2015-07-24 2017-01-26 BSH Hausgeräte GmbH Device for controlling a cleaning of a filter unit for vacuum cleaners
DE102016100780A1 (en) 2016-01-19 2017-07-20 Festool Gmbh suction device
EP3320822B1 (en) * 2016-11-07 2019-04-03 Festool GmbH Suction device with a connection device
EP3498142A1 (en) 2017-12-18 2019-06-19 HILTI Aktiengesellschaft Efficient filter cleaning

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2047784A2 (en) * 2007-10-11 2009-04-15 BLACK & DECKER INC. Vacuum electronic switch detection system

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Publication number Priority date Publication date Assignee Title
JP4747850B2 (en) * 2006-01-20 2011-08-17 日立工機株式会社 Dust collector
JP5185551B2 (en) * 2007-03-19 2013-04-17 日立工機株式会社 Dust collector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2047784A2 (en) * 2007-10-11 2009-04-15 BLACK & DECKER INC. Vacuum electronic switch detection system

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ES2565309T3 (en) 2016-04-01
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DK2644073T3 (en) 2016-05-30
DE202012003282U1 (en) 2012-04-18

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