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WO2019129559A1 - Appareil d'aspiration pour batterie - Google Patents

Appareil d'aspiration pour batterie Download PDF

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Publication number
WO2019129559A1
WO2019129559A1 PCT/EP2018/085768 EP2018085768W WO2019129559A1 WO 2019129559 A1 WO2019129559 A1 WO 2019129559A1 EP 2018085768 W EP2018085768 W EP 2018085768W WO 2019129559 A1 WO2019129559 A1 WO 2019129559A1
Authority
WO
WIPO (PCT)
Prior art keywords
suction
battery
flow
unit
suction device
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.)
Ceased
Application number
PCT/EP2018/085768
Other languages
German (de)
English (en)
Inventor
Dietmar Saur
Tim Hartmann
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2019129559A1 publication Critical patent/WO2019129559A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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

Definitions

  • cordless suction device which is used as a wet andplig réelle in the industrial sector for use and receives its power from a handheld power tool battery pack.
  • the invention is based on a cordless suction device for collecting and separating particles and / or liquids from a suction flow.
  • the cordless vacuum cleaner has a housing in which a motor and a fan unit are accommodated for generating a suction flow.
  • the motor is used to drive the fan unit.
  • the fan unit in particular comprises a fan, e.g. a radial or axial fan.
  • the accumulator suction device further comprises a filter unit and a collecting container for collecting separated from the suction flow of particles and / or liquids.
  • the battery suction device has a battery interface for mecha nically and electrically detachable recording of a handheld power tool battery pack.
  • the battery suction device has a monitoring unit for monitoring a flow characteristic, in particular the suction speed, has.
  • a flow parameter is to be understood with the speed of wick korrelie-generating physical size, such. B. pressure, flow.
  • the suction speed that occurs in the real operation of a suction device is influenced by several factors. Factors include the degree of Verunreini tion of the filter unit and the Sauggerteilrabe culinary used, eg. B. suction hose, suction pipes and suction nozzle.
  • the voltage of the handheld power tool battery pack which depends in operation during the unloading of the state of charge of the power tool battery packs. In particular, the voltage during unloading deviates from the nominal voltage of the power tool battery pack and continues to decrease during the discharge.
  • the monitoring unit comprises a measuring device for measuring the flow characteristic or a fluidic quantity correlating with the flow characteristic, such as
  • the monitoring unit is also designed to determine the suction velocity from the measured data of the fluidic rule's size.
  • a "hand tool machine battery pack” in particular a battery pack is to be ver, who trained generating machines for the power supply of commercial craft.
  • the battery pack has a battery pack housing and one or more battery cells, which are interconnected. For exchangeable electrical and mechanical attachment to a hand tool or to the battery suction device, the battery pack has an electrical interface with electrical
  • the battery cell can be designed as a Li-cell battery cell with a rated voltage of 3.6 V.
  • geous includes the handheld power tool battery pack at least five battery cells and a total nominal voltage of 18 V to a performance-friendly operation of the battery
  • a “battery interface” of the cordless suction device should in particular be understood to mean a unit which is designed for exchangeable electrical and mechanical attachment of a handheld power tool battery pack.
  • the battery interface has an electrical interface with electrical contacts and a mechanical interface with at least one Verriegelungsele element and possibly guide elements.
  • the mechanical and electrical interface of the battery suction device is designed to correspond to the mechanical and electrical interface of the power tool battery pack.
  • Filter units for a cordless suction device are well known from the prior art. The filter unit is particularly adapted to the expected particle size by the pore size is adapted to the application, so that particles are effectively separated from the suction flow and at the same time a maximum suction flow can happen.
  • the filter unit is in particular detachably connected to the housing of the cordless suction device, so that the filter unit z. B. for cleaning purposes or in the case of damage can be replaced.
  • the filter unit can be connected by means of a bayonet connection to the housing, which allows a comfortable operation when loosening and attaching the filter unit.
  • Collecting container for a cordless suction device are well known from the prior art.
  • the collecting tank is used to collect Toon from the suction particles and / or liquids.
  • the collecting container is in particular releasably connected to the housing of the cordless suction device. By loosening the housing of the battery suction device, the sump z. B. exchanged or emptied.
  • the monitoring unit comprises a Druckmesseinrich device for measuring a pressure during operation of the battery suction device.
  • the pressure measuring device can measure a static pressure.
  • the pressure measuring device comprises in particular one or more sensor elements for measuring the pressure, for.
  • the pressure measuring device can, for. B. may be located directly at the measuring point for measuring the pressure. Alternatively, only the sensor element for measuring the pressure at the measuring point can be provided. The processing of the measured data of the sensor element can be done in the measuring device, the z. B. is located on a circuit board of a control unit of the battery suction device. In a further alternative, the pressure measuring device, in particular the sensor element, be provided on the circuit board of the control unit, wherein from the measuring point a line, for. B. a hose leads to the sensor element.
  • the pressure measuring device is technically downstream of the fan unit.
  • the measuring point for the measurement of the pressure is fluidly downstream of the fan unit.
  • the pressure measuring device can be arranged at the measuring point itself.
  • only one line can be provided at the measuring point, which leads to the sensor element of the pressure measuring device leads.
  • the sensor element can, for. B. be arranged on a Lei terplatte on which electronic components of a control unit of the battery suction device are present.
  • the pressure measuring device is fluidically inter mediate the filter unit and the fan unit arranged.
  • the measuring point for measuring the pressure is fluidically arranged between the filter unit and the fan unit.
  • the pressure measuring device can be arranged at the measuring point itself.
  • only one line can be provided at the measuring point, which leads to the sensor element of the pressure measuring device.
  • the sensor element can, for. B. may be arranged on a printed circuit board on which electronic components of a control unit of the battery suction device are present.
  • the monitoring unit comprises a flow measuring device for measuring a flow or a volume flow.
  • a flow measuring device for measuring a flow or a volume flow.
  • Various Ausrete ments for a flow measuring device are possible, such. B. according to the measuring principle of an impeller, by means of an air mass sensor or an ultrasonic flow sensor.
  • the flow measuring device comprises one or more sensor elements for measuring the flow. Different Ausgestal lines and arrangements of the flow measuring device are possible. So z. B. the flow measuring device can be arranged directly at a measuring point. Alternatively, only the sensor element may be provided at the measuring point, wherein the processing of the measurement data Verat takes place in the measuring device, which at a suitable location in the battery suction device, for. B. in the control unit, is arranged.
  • the sensor element is connected at the measuring point with the rest of the measuring device by a line.
  • the measuring device may alternatively include a line which connects the measuring point in the battery suction device with the sensor element, which is z. B. is located on a circuit board of the control unit of the battery suction device.
  • the flow measuring device is advantageously arranged in terms of flow in the region of an outlet opening for the suction flow.
  • the measuring point for the measurement of the flow Mes is fluidly arranged in the region of an outlet opening for the suction flow.
  • the pressure measuring device can be arranged for example at the measuring point itself. Alternatively, only one line can be provided at the measuring point, which takes a sample and leads to the sensor element of the flow measuring device.
  • the sensor element in turn can be z. B. on a printed circuit board may be arranged on the electronic components of a control unit of the battery suction device are present.
  • the measuring point can be arranged in a further alternative, the sensor element, the measurement data in the measuring device are processed, the measuring device may be present at another point in the battery suction device.
  • the monitoring unit is also designed to determine from the measured data of the measuring device, the suction rate or a speed correlating with the Sauggeschwin flow characteristic.
  • the skilled person is in principle Lich known how a suction velocity can be determined from measured data of the pressure and / or measured data of the flow.
  • a dynamic pressure can be derived from the static pressure measurement data.
  • the suction speed can be calculated from the dynamic pressure.
  • it can be concluded on the basis of the measured data of the static pressure with the help of characteristic data of the cordless vacuum on the Saugge.
  • the monitoring unit is designed to be below an at least one threshold value for the suction speed to be.
  • the monitoring unit may also be configured to suppress the undershooting of more than one threshold, e.g. B. two or three limits, to determine the Saugge speed.
  • the limit or limits depend on the characteristic sizes of the cordless suction device and can, for. B. be determined experimentally.
  • the limit value (s) are stored in particular in a storage unit of the cordless suction device.
  • the battery suction device comprises an information output unit which outputs information, provided that at least one threshold for the suction speed is undershot.
  • the information output unit is in particular a unit for the acoustic and / or optical output of information.
  • the acoustic output can be a beep or a sequence of beeps.
  • the optical output can be detected by a display unit, e.g. As a display, or by one or more Leuchtmitel, z. B. LED, done.
  • the battery suction device may have a filter cleaning unit for cleaning the filter unit, which performs a cleaning of the filter unit, if the at least one limit value for the suction speed is exceeded.
  • the filter cleaning unit can in particular be designed as an automatic filter cleaning unit.
  • An automatic filter cleaning unit is basically known from the prior art. It is used to clean the filter unit in predefined time intervals, z. B. every 15 seconds, triggered a blast of compressed air.
  • the battery suction device can also be configured such that when the first limit value is undershot, the information output unit outputs information and, if the second limit value is not reached, the filter cleaning unit clears the filter unit performs.
  • the battery suction device may also include a control unit for controlling and / or regulating the motor, in particular a rotational speed of the motor.
  • the control unit is in particular designed to change the speed of the motor, in particular to reduce or to increase depending on the suction speed determined during operation or the speed correlating with the suction speed
  • the change in the engine speed can z. B. via pulse width modulation.
  • the control unit can also be designed to control and / or regulate the engine, in particular the engine speed, so that the suction speed or the flow characteristic correlating with the suction speed assumes a substantially constant value at least partially during unloading, independently of a voltage of the power tool battery pack ,
  • the substantially constant suction speed may have a value that z. B. in the range of 85% to 95% or in the range of at least 70% of the value of the maximum suction speed.
  • the maximum suction speed should be considered that suction speed, which is at an operating point of the cordless vacuum cleaner with maximum battery voltage and thus maximum motor voltage (ie without control by the control unit, in particular control electronics) results.
  • the engine in particular the engine speed, may be controlled and / or regulated by the control unit such that the suction speed or the flow characteristic correlating with the suction speed is substantially constant, essentially during the entire unloading process.
  • the control unit controls and / or regulates the engine speed so that the suction speed is essentially constant throughout the unloading process, regardless of the tension of the power tool battery pack. This is advantageous because the suction speed during the entire discharge process is independent of the decreasing voltage of the power tool battery packs.
  • the engine in particular the engine speed, may be controlled and / or regulated by the control unit such that the suction speed or the flow characteristic correlating with the suction speed is substantially constant only partially during the unloading process.
  • the substantially constant suction speed can be achieved by reducing the engine speed, as long as the voltage of the power tool battery pack at the beginning of the discharge process is comparatively high. This reduction of the engine speed during a comparatively high voltage of the hand tool machine battery pack leads to a longer duration of the power tool battery pack compared to an operation in which the engine speed is not reduced, as long as the voltage is relatively high.
  • the control and / or regulation of the engine speed stops regardless of the voltage, so that the engine speed, and thus the suction speed, gradually decreases as a function of the voltage ,
  • the engine speed may be reduced in a range from 100% to 90%, in particular from 100% to 80%, very particularly from 100% to 70% of the maximum voltage of the power tool battery pack.
  • the engine speed during this initial part of the unloading process can be reduced so that a substantially constant suction speed is achieved is, the z. B. 87% of the maximum suction speed, at one of the
  • Handheld power tool battery pack is.
  • Fig. 1 is a longitudinal section through a cordless suction device with a Messeinrich device
  • Fig. 2 is a schematic representation of a cordless suction device with a age-native measuring device
  • Fig. 3 is a diagram showing the suction speed in speed depending on the duration of a handheld power tool battery pack.
  • a cordless suction device 10 in a simplified Dar position is shown in a longitudinal section.
  • the battery suction device 10 is designed as a centrifugal separator.
  • the battery suction device 10 has a housing 12 which is detachably connected to a collecting container 14.
  • the cordless vacuum cleaner 10 also has a filter unit 16 and a centrifugal chamber 14 of the collecting container limited.
  • the collecting container 14 has a stand element 15.
  • the housing 12 of the cordless suction device 10 has an air inlet opening 17, through which a suction flow can enter into the housing 12, and an outlet opening 19, through which a suction flow can exit the housing 12.
  • the direction of the suction flow is shown in Fig. 1 by arrows. From the air inlet opening 17 to the outlet opening 19 is not closer illustrated flow channel formed.
  • the battery suction device 10 has a motor 24 which drives a fan unit 26.
  • the fan unit 26 may be exemplified as a radial compressor.
  • the battery suction device 10 also has a control unit 25 which is arranged in the electrical circuit between the power tool battery pack 27 and motor 24.
  • the control unit 25 is used, inter alia, the control and / or regulation of the motor 24.
  • an information output unit 13 is provided on the battery suction device, which outputs information.
  • the infor mationsausgabetician 13 is shown schematically in Fig. 1 and z. B. be designed as a display element in the form of a display.
  • the battery suction device 10 is also equipped with a monitoring unit 32 for monitoring the suction speed.
  • the monitoring unit 32 comprises a pressure measuring device 33 for measuring a pressure during operation of the cordless suction device 10.
  • the pressure measuring device 33 can measure a static pressure.
  • the pressure measuring device 33 has a sensor element in the form of a pressure sensor for measuring the pressure.
  • the sensor element of the pressure measuring device 33 is arranged here by way of example on a printed circuit board, not shown, of the monitoring unit 32.
  • the pressure measuring device 33 also comprises at least one line 34a, 34b, which connects a measuring point along the suction flow in the flow channel of the cordless suction device 10 with the sensor element. For the arrangement of the measuring point along the flow channel, two variants are shown schematically in FIG.
  • the pressure measuring device 33 is fluidly downstream of the fan unit 26.
  • a measuring point for the measurement of the pressure is flow-technically downstream of the fan unit 26 in that one end of the line 34a is mounted in a region of the flow channel which, viewed in the flow direction, is behind the fan unit 26.
  • the other end of the conduit 34 a is connected to the sensor element of the pressure measuring device 33.
  • the pressure measuring device 33 is arranged fluidically between the filter unit 16 and the fan unit 26.
  • the measuring point for measuring the pressure is fluidically disposed between the filter unit 16 and the fan unit 26 by one end of the conduit 34 b is mounted in a region of the flow channel, which seen in the flow direction between the filter unit 16 and the Lüf terillon 26 is located.
  • the other end of the line 34b is in turn connected to the sensor element of the pressure measuring device 33.
  • the monitoring unit 32 comprises a flow measuring device 43 for measuring a flow.
  • the flow measuring device 43 includes in the illustrated embodiment, an ultrasonic flow sensor as a sensor element 45 for measuring the flow.
  • the operation of an ultrasonic flow sensor is generally known to those skilled in the art. From the measuring point at which the sensor element 45 is arranged, leads one or two lines 44 to the monitoring unit 32.
  • the sensor element 45 of the flow measuring device 43 is fluidically arranged in the region of the outlet opening 19 for the suction flow. Lines 44 connect the sensor element 45 with the remaining parts of the flow measuring device 43, which are arranged on a printed circuit board of the control unit 25.
  • the monitoring unit 32 is designed to determine the Saugge speed from the measured data of the pressure measuring device 33 and / or the flow measuring device 35. Furthermore, the monitoring unit 32 is designed to determine a falling below a threshold value for the suction speed.
  • the limit depends on the characteristic data of the battery suction device 10 and z. B. be determined experimentally. The limit is in particular in a memory unit of the accumulator suction device 10 deposited.
  • the information output unit 13 outputs information to the user if the suction speed limit value is fallen below.
  • the battery-suction device 10 is equipped with a filter cleaning unit not shown for cleaning the filter unit 16.
  • the filter cleaning unit is designed as an automatic filter cleaning unit, which in predefined Zeitin tervallen, z. B. every 15 seconds, a compressed air blast triggers.
  • the filter cleaning unit performs a cleaning of the filter unit 16, if the limit for the Saugge speed is exceeded.
  • the control unit 25 of the cordless suction device 10 is designed to control and / or regulate the motor speed of the motor 24 via pulse width modulation.
  • the control unit 25 is adapted to control and / or regulate the motor 24 so that the suction speed assumes a substantially constant value independent of a voltage of the power tool battery pack 27 during unloading. This is shown in FIG. The graph of FIG.
  • FIG. 3 illustrates the relative Sauggeschwindig speed in dependence on the relative maturity of the handheld power tool battery bag 27.
  • the curve 52 is the relative suction speed without controlling the engine speed again. It can be seen that the suction speed over the entire discharge cycle of the hand tool machine battery pack 27 varies. The Saugge speed decreases during the unloading process.
  • the curve 54 gives the relative suction speed with a control and / or regulation of the engine speed again. The control and / or regulation takes place at the beginning of the unloading process, as long as the voltage of the portable power tool battery pack 27 is comparatively high. As long as the voltage is high, the engine speed is reduced compared to an engine speed that would be possible due to the voltage. By way of example, it is shown in FIG.
  • the suction speed is reduced to a constant value of 88% of the maximum suction speed in a range up to approximately 50% of the relative running time of the handheld power tool battery bag 27.
  • the control and / or regulation of the engine speed ends at a defined value of the suction speed and the engine speed decreases gradually in dependence on the voltage.
  • the curve 56 also gives the relative suction speed with a control and / or regulation of the engine speed again. The control and / or regulation takes place here during the entire unloading process, so that the relative suction speed during unloading inde pendent of the actual voltage of the handheld power tool battery pack assumes a substantially constant value. In the case of game shown in Fig. 3, the relative suction velocity is 88%.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne un appareil d'aspiration pour batterie destiné à collecter et à séparer des particules et/ou des liquides à partir d'un courant d'aspiration, comprenant un boîtier (12), un moteur (24), une unité de ventilation (26) pour produire un courant d'aspiration, une unité de filtrage (16), un récipient de collecte (14) pour collecter des particules et/ou liquides séparés du courant d'aspiration, et une interface de batterie (23) pour la réception amovible d'un ensemble de batterie pour machines-outils portatives (27), une unité de surveillance (32) étant destinée à surveiller une grandeur caractéristique de circulation.
PCT/EP2018/085768 2017-12-27 2018-12-19 Appareil d'aspiration pour batterie Ceased WO2019129559A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102017223792 2017-12-27
DE102017223792.9 2017-12-27
DE102018204172.5A DE102018204172A1 (de) 2017-12-27 2018-03-19 Akku-Sauggerät
DE102018204172.5 2018-03-19

Publications (1)

Publication Number Publication Date
WO2019129559A1 true WO2019129559A1 (fr) 2019-07-04

Family

ID=66768046

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/085768 Ceased WO2019129559A1 (fr) 2017-12-27 2018-12-19 Appareil d'aspiration pour batterie

Country Status (2)

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DE (1) DE102018204172A1 (fr)
WO (1) WO2019129559A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2622365A (en) * 2022-09-13 2024-03-20 Dyson Technology Ltd A method of determining an airflow rate through a motor assembly of an air-moving device

Citations (3)

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Publication number Priority date Publication date Assignee Title
CA2420497A1 (fr) * 2000-04-20 2001-04-15 Polar Light Limited Aspirateur comprenant plusieurs modes d'alimentations
US20070240275A1 (en) * 2006-04-13 2007-10-18 Electrolux Home Care Products Ltd. Lighting apparatus for a vacuum cleaner
US20160183752A1 (en) * 2014-12-24 2016-06-30 Irobot Corporation Evacuation Station

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Publication number Priority date Publication date Assignee Title
DE602006012794D1 (de) * 2006-01-27 2010-04-22 Black & Decker Inc Filterreinigungsmechanismus von Staubsauger
US8607405B2 (en) * 2008-03-14 2013-12-17 Techtronic Floor Care Technology Limited Battery powered cordless cleaning system
DE102010043582A1 (de) * 2010-11-08 2012-05-10 Hilti Aktiengesellschaft Mobiles Elektrogerät mit Ladezustandsanzeige und Akkumulator hierfür
DE102011052023A1 (de) * 2011-07-21 2013-01-24 Miele & Cie. Kg Verfahren zur Füllstandsüberwachung bei einem Staubsauger
DK177913B1 (da) * 2013-07-03 2014-12-15 Bröndum As V Støvsuger med tømningsindikator og luftgennemstrømningsregulator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2420497A1 (fr) * 2000-04-20 2001-04-15 Polar Light Limited Aspirateur comprenant plusieurs modes d'alimentations
US20070240275A1 (en) * 2006-04-13 2007-10-18 Electrolux Home Care Products Ltd. Lighting apparatus for a vacuum cleaner
US20160183752A1 (en) * 2014-12-24 2016-06-30 Irobot Corporation Evacuation Station

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