EP3730024B1 - Procédé de commande d'un procédé de nettoyage dans un dispositif d'aspiration des poussières et dispositif d'aspiration des poussières - Google Patents

Procédé de commande d'un procédé de nettoyage dans un dispositif d'aspiration des poussières et dispositif d'aspiration des poussières Download PDF

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Publication number
EP3730024B1
EP3730024B1 EP19170577.1A EP19170577A EP3730024B1 EP 3730024 B1 EP3730024 B1 EP 3730024B1 EP 19170577 A EP19170577 A EP 19170577A EP 3730024 B1 EP3730024 B1 EP 3730024B1
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EP
European Patent Office
Prior art keywords
filter
reference value
cleaning
cleaning device
value
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
EP19170577.1A
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German (de)
English (en)
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EP3730024A1 (fr
Inventor
Xaver HANSLMEIER
Svenja Müller
Rainer Stahl
Dominik Wenning
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to EP19170577.1A priority Critical patent/EP3730024B1/fr
Priority to DK19170577.1T priority patent/DK3730024T3/da
Priority to US17/442,851 priority patent/US20220183523A1/en
Priority to PCT/EP2020/060122 priority patent/WO2020216628A1/fr
Priority to JP2021561894A priority patent/JP7331133B2/ja
Priority to CN202080020621.XA priority patent/CN113556967B/zh
Publication of EP3730024A1 publication Critical patent/EP3730024A1/fr
Application granted granted Critical
Publication of EP3730024B1 publication Critical patent/EP3730024B1/fr
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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
    • A47L9/10—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
    • A47L9/2805—Parameters or conditions being sensed
    • A47L9/2821—Pressure, vacuum level or airflow

Definitions

  • the present invention relates to a method for controlling a cleaning process in a vacuum cleaning device, the vacuum cleaning device comprising at least one filter which is cleaned regularly.
  • the proposed method enables in particular a needs-based, differential pressure-dependent filter cleaning, in which the filter aging or the filter wear can also be taken into account.
  • the invention relates to a vacuum cleaner device with which the proposed control method can be carried out.
  • the vacuum cleaner device can in particular comprise a filter cleaning unit.
  • vacuum cleaning devices are known, which are used in particular on construction sites in order to suck off dust that occurs in connection with the use of machine tools, such as for example drilling or grinding devices.
  • construction site vacuums usually comprise a suction head in an upper area and a collecting container for the vacuumed up dust in a lower area of the vacuum cleaning device.
  • vacuum cleaners are preferably also referred to as industrial vacuums, construction site vacuums or construction vacuums in the context of the invention.
  • the dust is sucked in with a turbine that is driven by a motor.
  • the turbine generates a suction flow by providing a negative pressure in the dust accumulation device.
  • the turbine can preferably also be designed as a fan.
  • the turbine or the fan are sensitive components of the vacuum cleaning device, which in particular have to be protected from dust. For this reason, filters or filter elements are usually connected upstream of the fan or the turbine in order to filter any dust that has remained in the suction flow out of the suction flow before the dust reaches the area of the turbine or the blower. These filters or filter elements can become clogged with dust over time, which can impair their functionality.
  • filter cleaning is in the sense of Invention preferably referred to as "filter cleaning".
  • filter cleaning In most cases, the vacuum in the vacuum cleaner is reduced when cleaning the filter, whereby the suction of the dust is briefly interrupted and the filter is cleaned.
  • the filter cleaning process is usually controlled on a time basis. For example, regularly recurring time intervals in which the filter cleaning is carried out automatically can be stored or defined in the vacuum cleaner or a control unit of the vacuum cleaner. With such time-based filter cleaning processes, cleaning cycles are carried out at regular time intervals. The quality of the cleaning can be described or documented with a cleaning quality.
  • the disadvantage of the filter cleaning method known from the prior art is that the filter wear or filter aging is not taken into account when controlling or initiating the filter cleaning process, so that an essential factor for achieving a high cleaning quality is not taken into account when controlling the cleaning is included. As a result, it can happen that cleaning takes place at unsuitable times or that it is either carried out too early and therefore too often or too seldom and therefore after a maximum quality has been exceeded. Too frequent cleaning is disadvantageous insofar as the negative pressure in the vacuum cleaning device has to be reduced during cleaning, which causes a short-term, undesired interruption of dust suction.
  • the document EP 2 644 076 A1 describes a method for controlling a cleaning process in a vacuum cleaning device according to the preamble of method claim 1.
  • the object of the present invention is to solve the problems described above and to provide a method for controlling a cleaning process in a vacuum cleaning device, with which a needs-based filter cleaning with an efficiency check is made possible and with which the control and initiation of a cleaning process taking into account the filter wear or the Filter aging occurs.
  • filter cleaning can be provided, which enables an efficiency check and, surprisingly, a consideration of filter wear or filter aging.
  • the consideration of the filter wear or the filter aging is made possible in particular by adapting the reference value, which can be maintained or changed as a function of a current pressure value that is determined in the vacuum cleaner.
  • a particular advantage of the invention is that the filter cleaning is controlled, i.e. initiated, dependent on the differential pressure. This advantageously enables filter wear and / or filter aging to be taken into account when controlling the filter cleaning.
  • a first reference value is first established.
  • This reference value preferably describes the state of the filter or of the filter elements forming the filter.
  • the first reference value describes a state of the filter or the filter elements with regard to aging or wear.
  • This state of the filters or the filter elements can advantageously correspond to the quality of the filter cleaning, so that statements about the quality of the filter cleaning can preferably be derived from the first reference value.
  • the first reference value is preferably determined before or when the vacuum cleaner is started up, so that it preferably represents the state of the filter or the filter elements at the start of the vacuum cleaner's suction operation.
  • the first reference value is determined after a predetermined operating time or after performing a certain number of cleaning cycles, so that the first reference value preferably describes the state of the filter or the filter elements after a short operating time of the vacuum cleaner device. According to the invention, it can also be preferred that the first reference value is established or checked by determining a differential pressure or a flow resistance value and subtracting this differential pressure or flow resistance value from a maximum differential pressure or a flow resistance value.
  • the reference value describes a state which is determined when the vacuum cleaner is switched on and which is provided as a target value for further cleaning.
  • this target value can be corrected upwards or downwards as required and depending on the condition of the filter, so that in the context of the present invention, the target value for filter cleaning or the filter cleaning quality is adjusted in particular by using the method steps mentioned.
  • the first reference value can be established as a function of operating parameters that can be determined with regard to the vacuum cleaner and its operation. In other embodiments of the invention, the first reference value can also be specified as a theoretical value.
  • the first reference value is used as a starting point for the proposed method.
  • the first reference value can preferably correspond to a pressure difference in the air flow or suction volume flow, the pressure difference preferably being measured in the air flow in front of and behind the filter.
  • a pressure difference is determined in the air flow upstream and downstream of the filter.
  • the pressure difference can be larger or smaller, with low degrees of pollution being associated with a small pressure difference and heavy pollution being associated with a large pressure difference.
  • the determined pressure or pressure difference values are further processed using information technology.
  • characteristic values, parameters or comparison data can be calculated and / or derived from the determined pressure or pressure difference values.
  • the determined pressure or pressure difference values are used in order to calculate a flow resistance from them.
  • a c w value can be determined for this purpose, which preferably describes the flow resistance that the filter has in the air or suction flow. It has been shown that the flow resistance value of the filter can be determined particularly well on the basis of the determined pressure or pressure difference values.
  • the c w value of the filter has a particularly high technical informative value with regard to the degree of contamination of the filter or the quality of the filter cleaning.
  • the flow resistance value is determined using the motor characteristic of the vacuum cleaner device.
  • the pressure range which is placed around the first reference value in the context of the present invention, can be established, for example, such that the first reference value lies centrally or essentially centrally in the pressure range. It can also be preferred that the first reference value represents an upper or a lower limit of the pressure range and that the pressure range is in each case limited by a second threshold value.
  • the pressure range that is defined by the reference value can include a differential pressure or a flow resistance value that is considered to be sufficient for a qualitatively acceptable filter cleaning. This differential pressure value or a flow resistance value can, for example, represent a limit of the pressure range
  • a differential pressure value can be determined which describes a current state of the filter.
  • this differential pressure value it is preferably the difference between the pressure conditions in the air or suction flow upstream and downstream of the filter, which is determined in particular by comparing pressure values that are determined in front of and behind the filter in the suction flow.
  • the difference between the pressure ratios in the context of the invention is also referred to as the pressure difference.
  • the determined pressure difference value is used for comparison for subsequent cleaning.
  • the invention advantageously enables the aging process or the clogging of the filter to be taken into account.
  • the determined differential pressure value is compared with the first reference value.
  • the proposed method comprises the following method step: comparison of the previously determined differential pressure value with the first reference value.
  • the differential pressure value It is then determined whether the differential pressure value lies in the previously defined pressure range. Depending on whether the previously determined differential pressure value lies in the initially defined pressure range, a second reference value is established, the following case distinction being made here. If the determined differential pressure value lies in the previously defined pressure range, the first reference value is retained. If the determined differential pressure value does not lie in the previously defined pressure range, the first reference value is replaced by the currently determined differential pressure value, whereby the second reference value is obtained.
  • This second reference value is preferably used as a starting point for the following cleaning processes, so that the second reference value is preferably used as the “first reference value” when the method is repeated.
  • the determination of the second reference value is made dependent on how the currently determined differential pressure relates to the first reference value.
  • the differential pressure value is determined by forming the difference between pressure values that can be detected in a suction stream of the vacuum cleaner in front of and behind the filter.
  • the definition of the second reference value preferably corresponds to an adaptation of the reference value, which is carried out in order to advantageously take account of the filter aging. If, during this adaptation, the first reference value is replaced by the pressure value determined and the pressure value determined is replaced by a more heavily aged one If the filter corresponds, this greater aging can be taken into account when carrying out or controlling the subsequent filter cleaning processes. In this exemplary embodiment, the proposed vacuum cleaning device will therefore no longer attempt to achieve the original quality of filter cleaning. Up to now, this could lead to problems if an automatic filter cleaning control system had always tried to achieve a filter cleaning quality that is to be expected from an unused filter, because filter cleaning processes may have been initiated too often as a result.
  • the filter cleaning processes are rather initiated as a function of a current requirement and as a function of the filter with regard to its aging and / or its wear.
  • the number of filter cleaning processes per unit of time can advantageously be optimized, so that on the one hand the dust extraction process does not have to be interrupted too frequently and on the other hand an efficient suction power of the vacuum cleaner and an efficient filtering of the air flow in the vacuum cleaner is achieved.
  • the second reference value is greater than the first reference value. In other embodiments of the method, it can also be preferred that the second reference value is smaller than the first reference value. This is particularly the case if an above-average cleaning is found. In other words, in the case of above-average cleaning, the new, second reference value can also be set below the original first reference value by recalibration. This can be the case, for example, if the cleanings carried out have led to such good cleaning results that the filter has a lower level of contamination after the cleaning has been carried out than, for example, when the vacuum cleaner was started. In this respect, it can be preferred in the context of the invention that the method steps are not only run through once, but that they are carried out repeatedly.
  • the invention offers a needs-based, differential pressure-dependent filter cleaning with efficiency check, the efficiency check being achieved in particular by comparing the currently determined differential pressure value with the first reference value, as well as the subsequent determination of the second reference value depending on how the current differential pressure value relates to the first Reference value behaves.
  • the second reference value can preferably correspond to the first reference value or the first reference value can be replaced by the current differential pressure value, whereby a new or changed reference value is obtained, which is preferably referred to as the second reference value.
  • the reference value can be recalibrated if the original, ie the first reference value is not reached.
  • the invention in a second aspect, relates to a filter cleaning of the vacuum cleaning device, which can be controlled, ie controlled, with the proposed method.
  • the vacuum cleaner device preferably comprises sensors for determining pressure values, the sensors being arranged in front of and behind the filter in particular in a suction stream of the vacuum cleaner device.
  • the at least two pressure values can be determined, from which the differential pressure value can be formed by forming the difference, that is to say in particular by performing a subtraction.
  • the vacuum cleaner device preferably also comprises a control device for initiating and performing the method steps of the control method.
  • Figure 1 shows a preferred embodiment of the method for controlling a cleaning process in a vacuum cleaner.
  • the in Figure 1 The method, which is shown schematically in a flowchart, is a needs-based, differential pressure-dependent filter cleaning, in which the filter aging or filter wear is also taken into account, in that a reference value, which preferably describes a condition of the filter of the vacuum cleaning device, corresponds to any filter aging in the course of time or any filter wear can be adjusted.
  • the reference value which in the sense of the invention is preferably also referred to as the first reference value, is preferably used as a control parameter for the proposed control method. It can provide information about a filter status of the vacuum cleaner device, so that the reference value preferably indicates which filter cleaning quality is to be aimed for with the filter cleaning.
  • the reference value can be adapted to a current filter status, the current filter status advantageously being described by a differential pressure value that is determined in the suction flow upstream and downstream of the filter.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Cleaning In General (AREA)

Claims (8)

  1. Procédé de commande d'un processus de dépoussiérage dans un dispositif d'aspiration de poussière, le dispositif d'aspiration de poussière comprenant au moins un filtre qui est dépoussiéré régulièrement, comprenant les étapes de procédé suivantes consistant à :
    a) spécifier une première valeur de référence qui définit une plage de pression,
    b) établir une valeur de pression différentielle qui décrit un état actuel du filtre,
    c) déterminer si la valeur de pression différentielle se situe dans la plage de pression définie au point a),
    caractérisé par l'étape de procédé supplémentaire consistant à :
    d) spécifier une deuxième valeur de référence soit en maintenant la première valeur de référence, soit en remplaçant la première valeur de référence par la pression différentielle établie au point b), la spécification de la deuxième valeur de référence étant effectuée en fonction du fait que la valeur de pression différentielle établie au point b) est située ou non dans la plage de pression définie au point a).
  2. Procédé selon la revendication 1, caractérisé en ce que la deuxième valeur de référence est supérieure à la première valeur de référence.
  3. Procédé selon la revendication 1, caractérisé en ce que la deuxième valeur de référence est inférieure à la première valeur de référence.
  4. Procédé selon une ou plusieurs des revendications précédentes, caractérisé en ce que la première valeur de référence décrit un état du filtre du dispositif d'aspiration de poussière ou une qualité de dépoussiérage.
  5. Procédé selon une ou plusieurs des revendications précédentes, caractérisé en ce que la valeur de pression différentielle est établie par la soustraction de valeurs de pression qui peuvent être détectées dans un courant d'aspiration du dispositif d'aspiration de poussière devant et derrière le filtre.
  6. Dispositif d'aspiration de poussière, caractérisé en ce qu'un dépoussiérage de filtre du dispositif d'aspiration de poussière peut être commandé par le procédé selon une ou plusieurs des revendications précédentes.
  7. Dispositif d'aspiration de poussière selon la revendication 6, caractérisé en ce que le dispositif d'aspiration de poussière comprend des capteurs pour établir des valeurs de pression, les capteurs étant disposés dans un courant d'aspiration du dispositif d'aspiration de poussière devant et derrière le filtre.
  8. Dispositif d'aspiration de poussière selon la revendication 6 ou 7, caractérisé en ce que le dispositif d'aspiration de poussière comprend un dispositif de commande pour initier et exécuter les étapes de procédé du procédé de commande.
EP19170577.1A 2019-04-23 2019-04-23 Procédé de commande d'un procédé de nettoyage dans un dispositif d'aspiration des poussières et dispositif d'aspiration des poussières Active EP3730024B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP19170577.1A EP3730024B1 (fr) 2019-04-23 2019-04-23 Procédé de commande d'un procédé de nettoyage dans un dispositif d'aspiration des poussières et dispositif d'aspiration des poussières
DK19170577.1T DK3730024T3 (da) 2019-04-23 2019-04-23 Fremgangsmåde til styring af en rengøringsproces i en støvsugeindretning og støvsugeindretning
US17/442,851 US20220183523A1 (en) 2019-04-23 2020-04-09 Method for controlling a clearing process in a vacuum cleaning device, and vacuum cleaning device
PCT/EP2020/060122 WO2020216628A1 (fr) 2019-04-23 2020-04-09 Procédé de commande d'un processus de nettoyage dans un aspirateur et aspirateur
JP2021561894A JP7331133B2 (ja) 2019-04-23 2020-04-09 真空清掃機器における清掃プロセスを制御するための方法、及び真空清掃機器
CN202080020621.XA CN113556967B (zh) 2019-04-23 2020-04-09 用于控制真空清洁装置中的清理过程的方法、以及真空清洁装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19170577.1A EP3730024B1 (fr) 2019-04-23 2019-04-23 Procédé de commande d'un procédé de nettoyage dans un dispositif d'aspiration des poussières et dispositif d'aspiration des poussières

Publications (2)

Publication Number Publication Date
EP3730024A1 EP3730024A1 (fr) 2020-10-28
EP3730024B1 true EP3730024B1 (fr) 2021-12-29

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EP19170577.1A Active EP3730024B1 (fr) 2019-04-23 2019-04-23 Procédé de commande d'un procédé de nettoyage dans un dispositif d'aspiration des poussières et dispositif d'aspiration des poussières

Country Status (6)

Country Link
US (1) US20220183523A1 (fr)
EP (1) EP3730024B1 (fr)
JP (1) JP7331133B2 (fr)
CN (1) CN113556967B (fr)
DK (1) DK3730024T3 (fr)
WO (1) WO2020216628A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2622366A (en) * 2022-09-13 2024-03-20 Dyson Technology Ltd A method of determining a value of a filter loading of a filter of an air-moving device
CN115541443B (zh) * 2022-11-30 2023-03-03 苏州浪潮智能科技有限公司 印刷电路板的检测方法、其检测装置及电路板的印刷设备
GB2625103A (en) * 2022-12-06 2024-06-12 Dyson Technology Ltd A method for determining an initial filter-loading value of an air-moving device

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP2644076B1 (fr) * 2012-03-27 2015-12-16 ELECTROSTAR GmbH Aspirateur

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US7237298B2 (en) * 2003-09-19 2007-07-03 Royal Appliance Mfg. Co. Sensors and associated methods for controlling a vacuum cleaner
DE102005017702A1 (de) * 2005-04-11 2006-10-12 Alfred Kärcher Gmbh & Co. Kg Verfahren zum Abreinigen der Filter eines Staubsaugers sowie Staubsauger zur Durchführung des Verfahrens
JP2007245019A (ja) * 2006-03-16 2007-09-27 Hitachi Koki Co Ltd 集塵機
SE0702005L (sv) * 2007-09-07 2008-12-16 Electrolux Ab Dammsugare
DE102008038893A1 (de) * 2008-08-13 2010-02-18 Miele & Cie. Kg Verfahren und Vorrichtung zur Bestimmung des Füllgrades eines in einem Staubsauger angeordneten Sammelorgans
DE102009035717A1 (de) * 2009-07-31 2011-02-10 Miele & Cie. Kg Verfahren zur Anzeige eines Füllgrads eines Staubbeutels und Steuerungsvorrichtung zur Ausführung des Verfahrens
DK3119260T3 (en) * 2014-03-20 2018-07-23 Kaercher Gmbh & Co Kg Alfred Method of cleaning a filter of a vacuum cleaner and vacuum cleaner
US20150343348A1 (en) * 2014-06-03 2015-12-03 Caterpillar Inc. System for detecting pressure differential between inlet and outlet of filter element

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EP2644076B1 (fr) * 2012-03-27 2015-12-16 ELECTROSTAR GmbH Aspirateur

Also Published As

Publication number Publication date
JP7331133B2 (ja) 2023-08-22
WO2020216628A1 (fr) 2020-10-29
DK3730024T3 (da) 2022-02-07
CN113556967B (zh) 2022-11-29
EP3730024A1 (fr) 2020-10-28
US20220183523A1 (en) 2022-06-16
CN113556967A (zh) 2021-10-26
JP2022529172A (ja) 2022-06-17

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