EP4475727A1 - Sauggerät mit drosselventil und verfahren zur abreinigung eines filters in einem solchen sauggerät - Google Patents
Sauggerät mit drosselventil und verfahren zur abreinigung eines filters in einem solchen sauggerätInfo
- Publication number
- EP4475727A1 EP4475727A1 EP23701798.3A EP23701798A EP4475727A1 EP 4475727 A1 EP4475727 A1 EP 4475727A1 EP 23701798 A EP23701798 A EP 23701798A EP 4475727 A1 EP4475727 A1 EP 4475727A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- suction
- suction device
- flow
- throttle valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- A47L9/20—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
- A47L9/0072—Mechanical means for controlling the suction or for effecting pulsating action
-
- 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
- A47L9/106—Dust removal
-
- 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
Definitions
- the present invention relates to a suction device with a dirt collection container, a filter and a suction motor, wherein when the suction device is in suction operation, the suction motor generates a suction flow that flows from the dirt collection container through the filter in the direction of the suction motor.
- the suction device is set up to carry out a cleaning of the filter while the suction device is in continuous suction operation by generating a backwash flow R from a clean side of the filter in the direction of a dirty side of the filter.
- the suction device comprises a throttle valve, the throttle valve being provided on a dirt side of the filter and being set up to throttle the suction flow S, so that the backwash flow R is increased by the throttling of the suction flow S.
- the invention in a second aspect, relates to a method for cleaning a filter in a suction device, the filter being cleaned while the suction device continues to operate by generating a backwash flow from a clean side of the filter in the direction of a dirty side of the filter, with the suction flow being throttled by a Throttle valve to increase the backwash flow leads.
- the throttle valve can advantageously be used to adjust the cross section of a flow channel in the suction device and/or the pressure on a dirt side of a filter of the suction device.
- vacuum cleaners In the field of industrial vacuum cleaners, for example, devices are known with which both liquid and solid substances can be sucked in. Such vacuum cleaners are usually referred to as wet-dry vacuum cleaners.
- the solid substances can be, for example, dust, drilling dust or demolition material.
- the liquid material can be cooling or flushing water, which together with the solid material can form a sludge-like mass.
- a suction device is used in conjunction with a machine tool that generates dust or drill dust.
- the dust-generating work carried out with the machine tool is preferably referred to as “application” within the meaning of the invention.
- such devices are known in the field of industrial vacuum cleaners that can only suck in solid material.
- the suction device expediently has a suction hose, on the front end of which a nozzle or a machine tool can be mounted.
- the dirt collector is used to hold the vacuumed debris until the dirt collector is emptied.
- the dirt collection container can in particular have a suction opening to connect a suction hose.
- the filter is set up to separate or separate the suction material present in the air flow from the air flow.
- This separation of air flow and suction material is preferably referred to as “filtering” or “filtering” within the meaning of the invention.
- the filter is usually located between the dirt collector and the engine.
- the side of the filter facing the dirt collection container is referred to as the first side or the dirty side of the filter for the purposes of the invention, while the side of the filter facing the suction motor is referred to as the second side or the clean side of the filter.
- the air stream usually flows from the dirt collection container in the direction of the suction motor, i.e. from the dirty side of the filter in the direction of the clean side.
- the material sucked in by the vacuum cleaner is either deposited in the dirt collection container or it gets caught in the filter of the vacuum cleaner.
- An accumulation of suction material in the area of the filter can lead to the formation of a solid filter cake, as a result of which the flow resistance caused by the filter can increase significantly.
- the flow resistance brakes or throttles the suction air flow with which the suction material is sucked in, and can thereby disadvantageously reduce the suction power of the suction device.
- the filters of suction devices are cleaned regularly. This cleaning of a suction device filter is referred to as "filter cleaning" within the meaning of the invention.
- this can lead to a permanently reduced suction power of the suction device, so that suction tasks to be carried out take longer and tie up more personnel.
- the change intervals in which the filter of the suction device has to be replaced in order to guarantee or maintain a certain suction power can be shortened.
- DE 690 23 165 T2 discloses a remote control device for suction or ventilation systems with a chamber, a driven suction fan and at least one pipe.
- EP 3 827 724 A1 discloses a suction system comprising a central suction system, a plurality of suction points fluidically connected to the suction system, each with a throttle valve for each suction point and with a means for manually adjusting the throttle valve.
- DE 10 2015 108 559 A1 discloses an air filter that can be backwashed, in particular for a vacuum cleaner, with a filter element separating a clean air space from a suction material space, with the vacuum cleaner being able to be operated in a filter mode or in a backwash mode.
- US 2017 151 524 A1 describes a system and a method for backwashing a vacuum cleaner filter.
- the object on which the present invention is based is to overcome the above-described deficiencies and disadvantages of the prior art and to provide a suction device and a method for filter cleaning with which the efficiency of filter cleaning can be improved and optimized.
- a suction device having a dirt collection container, a filter and a suction motor, wherein when the suction device is in suction operation, the suction motor generates a suction flow that flows from the dirt collection container through the filter in the direction of the suction motor.
- the suction device is set up to carry out a cleaning of the filter while the suction device is in continuous suction operation by generating a backwash flow R from a clean side of the filter in the direction of a dirty side of the filter.
- the suction device comprises a throttle valve, the throttle valve being provided on a dirt side of the filter and being set up to throttle the suction flow S, so that the backwash flow R is increased by the throttling of the suction flow S.
- the throttle valve is arranged in the suction flow.
- the intake flow can be set and regulated, in particular throttled, by the throttle valve.
- the throttle valve is preferably also referred to as “throttle” within the meaning of the invention, with the terms preferably being used synonymously.
- the suction device may include a suction device head in an upper portion of the suction device and a dust collection container in a lower portion of the suction device.
- An inlet opening can be provided in the lower area of the suction device, in particular in the area of the dust collection container.
- a suction hose can be connected to this inlet opening, with the suction flow S being sucked into the suction device through the suction hose.
- a machine tool which generates dust during its operation, can be arranged on a front side of the suction hose. This dust can be extracted through the suction hose with the proposed suction device.
- the rear side of the suction hose can open out through the inlet opening into the dust collection container of the suction device, so that the dust-air mixture sucked in can be sucked into the dust collection container.
- the filter of the suction device preferably faces the dust collection container with its dirty side, while the clean side of the filter preferably faces the upper region of the suction device and can be oriented in the direction of the suction motor.
- the throttle is preferably located on the dirty side of the filter and in the suction flow.
- the provision of the throttle valve on the dirty side of the filter of the suction device enables dynamic control and regulation of a filter cleaning process, with the filter cleaning process being able to be optimized by the throttle valve in particular with regard to its duration, its quality and the time it takes place.
- the use of a throttle valve in the flow path through the suction device enables the filter to be cleaned as required, in the sense that the filter cleaning can be adapted to different ap- plications and connected machine tool can be adjusted. This can be done, for example, by defining design points that can be controlled depending on the application or the connected machine tool.
- the pressure conditions in the suction device can be set by the throttle valve in such a way that a particularly efficient filter cleaning can be provided.
- the cleaning process of the suction device takes place by backwashing the filter of the suction device.
- Ambient air is admitted into the suction device on the clean side of the filter, so that the pressure in the suction device, in particular on the clean side of the filter, preferably rises suddenly.
- the admission of the ambient air on the clean side of the filter can preferably take place through valves that close or release a further inlet opening.
- the pressure on the clean side of the suction device is briefly higher than the pressure in the dust collection container, i.e. on the dirty side of the filter of the suction device, due to the preferably sudden increase - caused by the penetrating ambient air.
- the penetrating ambient air acts indirectly on the filter in the sense that pistons or membranes transfer the penetrating air flow to the filter, so that the filter itself does not come into contact with the penetrating, unfiltered ambient air comes.
- Pistons or membranes can generate an air cushion and push it in front of them, with this air cushion being able to generate a backwash flow which then flows through the filter from the clean side in the direction of the dirty side and thereby cleans the filter.
- This cleaning process can be supported by the provision of the throttle valve, in that the suction flow is throttled through the throttle.
- the throttle valve is preferably arranged in the suction flow before the dust collector and is set up to control, in particular to increase, the negative pressure in the dust collector shortly before the filter is cleaned or during the filter is cleaned.
- the wording “increase in the negative pressure” preferably means that the pressure in the dust collection container falls (further).
- an increase in the negative pressure within the meaning of the invention can preferably also be used as a pressure be called waste.
- the throttle valve is set up to throttle the suction flow.
- the term “throttling” is used in the context of the invention in the sense of “continuous switching”. It is preferred within the meaning of the invention that the throttle valve can be switched essentially continuously.
- this preferably means that the throttle can not only be completely open (100% degree of opening) or completely closed (0% degree of opening), but preferably also any intermediate stage, i.e. preferably continuously variable degrees of opening between 0 and 100%.
- the throttle can preferably not only switch between the "open” and “closed” settings in a binary manner, but can also take on intermediate stages, for example to open degrees of the inlet opening of the suction device from 15%, 20%, 25%, 33.3%, 43.6% , 50%, 67%, 75%, etc.
- the present invention differs from solutions in which the suction flow is completely interrupted by the ability of the throttle valve not only to completely interrupt the suction flow or to allow it to pass unrestrictedly, but also to throttle it in the sense of "continuous switching”.
- the throttle valve or its degree of opening can preferably be controlled by a central control unit of the suction device, with this central control unit of the suction device preferably being set up to control the entire cleaning process.
- the throttle valve can be actuated manually or that the throttle valve can be activated electrically.
- the entire cleaning process can be initiated manually, ie can be started, for example, by an operation by the user of the suction device.
- This manual start of the cleaning process can preferably also be used to actuate the throttle valve, so that there is a brief throttling of the suction flow.
- the throttle can be opened or closed by a central control unit as part of the cleaning process, so that separate actuation of the throttle valve can be omitted.
- the cleaning process can preferably be controlled by the central control unit of the suction device.
- Typical throttle times can range from 10 to 150 ms. Of course, other throttle times are also possible, for example up to 200 or 300 ms, as well as all intermediate values.
- the dirty side of the filter is preferably that side of the filter which becomes clogged with dirt and dust during suction operation of the suction device.
- the dirt side preferably faces the dirt collection container and the inlet opening of the suction device.
- the filter of the suction device is preferably located in a flow channel or flow path which runs from the inlet opening through the dirt collection container through the filter in the direction of the suction motor of the suction device. When the suction motor is in operation, the suction flow that is generated by the suction motor flows through this flow channel or flow path.
- the naturally aspirated engine can include a turbine or a compressor.
- the pressure difference between the dirty side and the clean side of the filter can advantageously be increased and in this way the efficiency of the filter cleaning can be increased. Due to the greater pressure difference between the dirt side and the clean side of the filter, a stronger backwash flow through the filter can advantageously be achieved, so that the filter can be backwashed by a stronger air flow and cleaned better and more efficiently.
- a further advantage associated with the provision of a throttle in the flow channel of a suction device is that the filter can be cleaned while the suction device is in continuous suction operation. As a result, you can work particularly efficiently with the proposed suction device and suction work to be done can be carried out quickly and with little outlay on personnel. In particular, there are no undesirable breaks in work during which the suction operation has to be interrupted due to a possible filter cleaning.
- the cleaning of the filter of the suction device can be further improved if, instead of the manually operable throttle valve, an electrically activatable and in particular controllable and adjustable throttle is used.
- the manually operated throttle can affect the suction power during suction operation if the suction flow is interrupted by the throttle for too long. If the suction flow through the throttle is weakened for too long, the negative pressure prevailing in the dust collection container during suction operation can collapse too much, so that the negative pressure can only be restored slowly and with great effort after the end of the filter cleaning.
- the throttle valve which can be activated electrically, can in particular be regulated and/or controlled in a highly dynamic manner, so that a quantity of inflowing suction flow through the at least one inlet opening into the suction device can be adjusted as required.
- the pressure on the dirty side of the filter of the suction device can be adjusted by means of an electrically operated throttle valve.
- the cross-section of the flow channel between the intake opening and the naturally aspirated engine can be set particularly precisely and as required using an electrically activatable throttle.
- the quality of the filter cleaning advantageously does not depend on the connected machine tool or the dust-generating work carried out with it ("application"), but rather the quality of the filter cleaning can be adjusted with the aid of the throttle valve.
- the pressure drop in the dust collection container of the suction device can be adjusted with the throttle.
- the throttle can enable a particularly finely adjustable regulation and/or control of the suction flow or the pressure drop, so that a pressure or pressure drop can be set on the dirty side of the filter of the suction device in order to ensure optimal cleaning of the filter in the provide suction device.
- the throttle enables particularly good timing of the filter cleaning.
- the filter cleaning can be optimally placed in terms of time in the operation of the suction device, so that on the one hand an optimal cleaning of the filter and on the other hand a particularly low impairment of the suction operation of the suction device is guaranteed.
- the throttle is arranged in the area of the at least one inlet opening in the area of the dirt collection container, with the suction flow being able to flow into the suction device through the inlet opening.
- the inlet opening can be, for example, an opening for the suction hose.
- the throttle valve is preferably in the text of the present invention in the transition area from the suction hose to the suction device.
- the invention is based on the idea that the throttle is arranged in the suction flow and on the dirt side of the filter of the suction device, so that the suction flow can be throttled by the throttle, ie can preferably be continuously adjusted.
- the throttle valve can preferably also be arranged between the at least one inlet opening and the filter, so that it is arranged in particular on the dirty side of the filter of the suction device.
- the throttle valve can be used in particular to set the pressure or the pressure drop on this dirty side of the filter and thus increase the efficiency of the filter cleaning by setting an optimal pressure difference between the dirty and clean side of the filter to optimize filters.
- the setting of the optimum pressure difference can be achieved in particular by the throttle valve being set up to set a cross section of a flow channel in the suction device.
- the throttle valve can preferably be set up to set the cross section of the flow channel in a range between 0 and 100%.
- the throttle valve can not only binary between the positions "open” (essentially 100% opening of the inlet port and essentially 100% opening of the flow channel) and "closed” (essentially 0% opening of the inlet port and essentially 0% Opening of the flow channel) can be changed, but a fine adjustment of intermediate degrees of opening is possible.
- the throttle valve may be opened 17%, 20%, 25%, 33.3%, 46.4%, or any other percentage between 0 and 100%.
- the throttle valve is set up to set a pressure on a dirty side of the filter of the suction device.
- the negative pressure on the dirty side of the filter can be increased by temporarily throttling the suction flow before and/or during filter cleaning.
- this preferably means that the absolute pressure on the dirty side of the filter drops or is reduced for a short time.
- the pressure on a dirty side of the filter of the suction device can advantageously be controlled or regulated.
- the pressure on the dirty side of the filter of the suction device can be influenced by that a flow rate through the at least one inlet opening is varied or changed.
- the invention in a second aspect, relates to a method for cleaning a filter in a proposed suction device.
- the terms, definitions and technical advantages introduced for the suction device preferably apply analogously to the filter cleaning process.
- the filter cleaning process is characterized by the following process steps: a) Operating the suction device in a suction mode, b) Carrying out a filter cleaning during continued suction mode by generating a backwash flow from a clean side of the filter in the direction of a dirty side of the filter, c) Throttling of a suction flow through a throttle valve for Reinforcement of the backwash flow.
- the filter cleaning can be carried out while the suction operation of the suction device is continued.
- a simultaneous cleaning of the at least one filter of the suction device is possible during the continued suction operation of the suction device.
- the proposed suction device can be used particularly quickly and without interruption.
- the throttle valve prefferably be actuated manually or for the throttle valve to be activated electrically.
- a cross section of a flow channel in the suction device can be adjusted by the throttle valve in a range between 0 and 100%. This advantageously also makes it possible to set the pressure on a dirty side of a filter of the suction device using the throttle valve.
- the proposed method dynamic control and regulation of the filter cleaning process can be made possible, with the throttle optimizing the filter cleaning in particular with regard to its duration, its quality and the point in time at which it takes place.
- the invention enables a particularly needs-based cleaning of the filter in the sense that the filter cleaning can be adapted to different applications and connected machine tools.
- FIG. 1 View of a preferred embodiment of a suction device in suction mode
- FIG. 2 View of a preferred embodiment of a suction device during filter cleaning
- FIG. 1 shows a preferred embodiment of a suction device 1 in suction mode.
- the suction device 1 includes a dirt collection container 2, a filter 3 and a suction motor 4.
- the suction motor 4 can include a turbine 5, the turbine 5 being driven by the suction motor 4 so that a suction flow S is generated. From a technical point of view, the turbine 5 works as a compressor, with air being able to be sucked in with the compressor in order to generate the suction flow S.
- the suction flow S is used to suck in dust, dirt or a liquid mixture of water and dirt.
- the suction stream S flows within the suction device 1 in a flow channel or flow path, which is also denoted by the reference symbol S.
- the suction device 1 has an inlet opening 9 , with the suction flow S or the flow path S preferably being formed between the inlet opening 9 and the suction motor 4 or the turbine 5 .
- the inlet opening 9 is preferably arranged in the dirt collection container 2 of the suction device 1 .
- a filter 3 is arranged between the inlet opening 9 and the suction motor 4 and is designed to filter out dirt and dust from the suction flow S in order to prevent the suction motor 4 from being contaminated.
- the filter 3 has a dirty side 7, which preferably faces the dirt collection container 2, and a clean side 8, which faces the suction motor 4 and the suction device head.
- the term "dirty side 7" not only refers to the corresponding side of the filter 3, but preferably also to the area of the flow path S between the filter 3 and the inlet opening 9.
- the phrases “on the dirty side” and “between the filter 3 and the inlet opening 9» are preferably to be understood as synonymous within the meaning of the invention.
- the filter 3 can clog during operation of the suction device 1 or become clogged with a filter cake, as a result of which the suction power of the suction device 1 can be reduced.
- a so-called filter cleaning ie cleaning of the filter 3 of the suction device 1 .
- This filter cleaning is carried out in the context of the present invention with a backwash, ie a brief reversal of direction of the suction flow S.
- a backwash ie a brief reversal of direction of the suction flow S.
- the filter 3 is flowed through or flushed with a backwash flow R, with the backwash flow R from the clean side 8 of the filter 3 in the direction its dirty side 7 flows.
- the backwash flow R is shown in FIG.
- the backwash flow R can be generated by opening a further inlet opening 11 of the suction device 1, wherein this further inlet opening 11 can preferably be arranged in the upper area of the suction device 1 or in the head of the suction device 1 ("suction device head").
- the further inlet opening 11 can be opened or closed with a valve (not shown), for example. When the valve is opened, ambient air 10 can flow through the further inlet opening 11 into the suction device 1 and act directly or indirectly on the filter 3 .
- the suction device 1 has a throttle valve 6 which is preferably arranged in the area of the inlet opening 9 in the dirt collection container 2 of the suction device 1 .
- the throttle valve 6 is arranged in particular in the suction flow S.
- the at least one inlet opening 9 of the suction device 1 can be fully or partially opened or closed.
- the inlet opening 9 of the suction device 1 can be opened or closed steplessly, so that the suction flow S can be set, in particular throttled, preferably steplessly by the throttle valve 6 .
- a negative pressure forms inside the suction device 1.
- This negative pressure is responsible for generating the suction flow S, with which dust, dirt and drilling mud can be sucked in by the suction device 1 .
- the suction device 1 can be connected to a suction hose (not shown), the suction hose preferably opening into the suction device 1 in the region of the inlet opening 9 .
- a pressure difference must be produced between the dirty side 7 and the clean side 8 of the filter 3 in order to generate a backwash flow R.
- the pressure on the clean side 8 of the filter 3 is increased and reduced on the dirty side 7 of the filter 3 so that the backwash flow R can flow from the clean side 8 in the direction of the dirty side 7 of the filter 3 .
- the pressure reduction on the dirt side 7 of the filter 3 is achieved in particular in that the cross section of the suction flow S is reduced through the at least one inlet opening 9 in the dirt collection container 2 of the suction device 1, so that the suction flow S itself is throttled.
- the throttle valve 6 is used to throttle the suction flow S, with the throttle valve 6 preferably being able to be actuated manually or activated electrically.
- an electrically activatable throttle is very particularly preferred, which can be adjusted or controlled in the sense that a flow rate of suction flow S through the inlet opening 9 can be regulated with the throttle valve 6 .
- This allows the pressure drop on the dirty side 7 of the filter 3 of the suction device 1 to be adjusted, as well as the pressure difference between the dirty side 7 and the clean side 8 of the filter 3, and the resulting quality of the filter cleaning.
- the throttle valve 6 is set up in particular to set a cross section Q (see FIG. 1) of the suction channel S.
- the suction device 1 can have a central control unit 12 with which the process of cleaning the at least one filter 3 of the suction device 1 can be controlled.
- the suction device 1 can have a further inlet opening 11 through which the ambient air 10 can flow into the suction device 1 .
- a backwash flow R for cleaning the at least one filter 3 of the suction device 1 can be generated.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22155856.2A EP4226826A1 (de) | 2022-02-09 | 2022-02-09 | Sauggerät mit drosselventil und verfahren zur abreinigung eines filters in einem solchen sauggerät |
| PCT/EP2023/052146 WO2023151974A1 (de) | 2022-02-09 | 2023-01-30 | Sauggerät mit drosselventil und verfahren zur abreinigung eines filters in einem solchen sauggerät |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4475727A1 true EP4475727A1 (de) | 2024-12-18 |
| EP4475727B1 EP4475727B1 (de) | 2026-03-11 |
| EP4475727C0 EP4475727C0 (de) | 2026-03-11 |
Family
ID=80446663
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22155856.2A Withdrawn EP4226826A1 (de) | 2022-02-09 | 2022-02-09 | Sauggerät mit drosselventil und verfahren zur abreinigung eines filters in einem solchen sauggerät |
| EP23701798.3A Active EP4475727B1 (de) | 2022-02-09 | 2023-01-30 | Sauggerät mit drosselventil und verfahren zur abreinigung eines filters in einem solchen sauggerät |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22155856.2A Withdrawn EP4226826A1 (de) | 2022-02-09 | 2022-02-09 | Sauggerät mit drosselventil und verfahren zur abreinigung eines filters in einem solchen sauggerät |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20250134330A1 (de) |
| EP (2) | EP4226826A1 (de) |
| WO (1) | WO2023151974A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240108184A1 (en) * | 2022-10-04 | 2024-04-04 | Makita Corporation | Dust collector |
| EP4681588A1 (de) * | 2024-07-19 | 2026-01-21 | Hilti Aktiengesellschaft | Ventilanordnung für eine saugvorrichtung |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2647510B1 (fr) * | 1989-05-23 | 1994-04-01 | Aldes Aeraulique | Dispositif de commande a distance pour installation d'aspiration centralisee |
| DE102015108559A1 (de) * | 2015-05-29 | 2016-12-01 | Vorwerk & Co. Interholding Gmbh | Rückspülbarer Luftfilter |
| US9981214B2 (en) * | 2016-12-16 | 2018-05-29 | Skitter & Squirt Adventures, Llc | System and method for backflushing a vacuum filter |
| DK3827724T3 (da) * | 2019-11-11 | 2023-03-06 | Klepp Absauganlagen Gmbh | Udsugningssystem og betjeningselement samt fremgangsmåde til styring af et udsugningssystem |
| DE202021001444U1 (de) * | 2021-04-19 | 2021-05-05 | Bernd Rose | Insekten-Fangvorrichtung für Staubsauger |
-
2022
- 2022-02-09 EP EP22155856.2A patent/EP4226826A1/de not_active Withdrawn
-
2023
- 2023-01-30 WO PCT/EP2023/052146 patent/WO2023151974A1/de not_active Ceased
- 2023-01-30 EP EP23701798.3A patent/EP4475727B1/de active Active
- 2023-01-30 US US18/835,819 patent/US20250134330A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4475727B1 (de) | 2026-03-11 |
| US20250134330A1 (en) | 2025-05-01 |
| WO2023151974A1 (de) | 2023-08-17 |
| EP4475727C0 (de) | 2026-03-11 |
| EP4226826A1 (de) | 2023-08-16 |
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