EP2835089A2 - Procédé de fonctionnement d'un aspirateur pour le nettoyage d'un élément de filtre enfermé dans l'aspirateur - Google Patents
Procédé de fonctionnement d'un aspirateur pour le nettoyage d'un élément de filtre enfermé dans l'aspirateur Download PDFInfo
- Publication number
- EP2835089A2 EP2835089A2 EP14180192.8A EP14180192A EP2835089A2 EP 2835089 A2 EP2835089 A2 EP 2835089A2 EP 14180192 A EP14180192 A EP 14180192A EP 2835089 A2 EP2835089 A2 EP 2835089A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas valve
- filter element
- vacuum cleaner
- clean gas
- filter
- 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
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000004140 cleaning Methods 0.000 title claims abstract description 41
- 239000012080 ambient air Substances 0.000 claims abstract description 23
- 230000004044 response Effects 0.000 claims abstract description 8
- 239000003570 air Substances 0.000 claims description 48
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 238000009530 blood pressure measurement Methods 0.000 claims description 5
- 230000004941 influx Effects 0.000 claims description 4
- 239000000428 dust Substances 0.000 description 41
- 238000011001 backwashing Methods 0.000 description 16
- 238000013459 approach Methods 0.000 description 12
- 230000002000 scavenging effect Effects 0.000 description 12
- 238000010926 purge Methods 0.000 description 11
- 230000000875 corresponding effect Effects 0.000 description 9
- 238000012545 processing Methods 0.000 description 8
- 230000001960 triggered effect Effects 0.000 description 7
- 238000011109 contamination Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000009408 flooring Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000012374 filter flush Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Images
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
Definitions
- the invention relates firstly to a method of operating a vacuum cleaner for back-cleaning a filter element comprised by the vacuum cleaner during operation of the vacuum cleaner.
- a method for operating a vacuum cleaner for cleaning back a filter element enclosed by the vacuum cleaner during operation of the suction device is also sometimes referred to below as a method for cleaning the filter element or as a method for filter cleaning.
- the invention further relates to a vacuum cleaner with means for particularly automatic implementation of the method and a vacuum cleaner, in which the cleaning of the filter element can be triggered by a user of the vacuum cleaner.
- Bagless household vacuum cleaners comprise in a dust chamber a filter element, on which accumulates dust collected during operation of the vacuum cleaner.
- Bagless household vacuum cleaners comprise a centrifugal separator and a filter element connected downstream of the centrifugal separator.
- the filter element stores the emission of the centrifugal separator, namely the dust fraction passing through the centrifugal separator.
- Both the centrifugal separator and the filter element are located in front of the vacuum cleaner fan.
- central filter systems a special embodiment of a centrifugal separator, the filter element is located as a so-called central filter within the centrifugal separator.
- the filter element must be freed and cleaned regularly and at relatively short intervals in the course of its use in order to keep the suction power of the vacuum cleaner largely constant.
- a motor-driven scraper which is arranged in the interior of the central filter, is used to knock off the dust from the filter folds, as described, for example, in US Pat WO 2011/12479 A is described.
- a disadvantage of this approach for back-cleaning the filter element encompassed by the vacuum cleaner is the mechanical loading of the filter folds by the scraper as a result of the deformation of the filter folds and the comparatively intensive operating noise of the scraper in the form of a "rattle" during the rotation.
- the invention thus presents the problem, for household vacuum cleaners, in particular for commercially available bagless vacuum cleaners, to provide a solution for the efficient, but at the same time material-saving, cleaning of a filter element encompassed by the respective vacuum cleaner.
- a pressure reading of a pressure sensor associated with a volume in which the filter element is located is detected and compared with a threshold value and that downstream of the filter element arranged clean gas valve is opened in response to exceeding the threshold value to the ambient air.
- the volume in which the filter element is located is either the dust chamber of the respective vacuum cleaner or, in the case of a bagless vacuum cleaner with a central filter, the centrifugal separator comprised by such a vacuum cleaner, which is often referred to as a separator in the following.
- flow direction information refers to the normal direction of air flow in the air flow direction Vacuum cleaner during suction operation due to the negative pressure generated by the blower of the vacuum cleaner. This also applies to the above position specification of the clean gas valve.
- the method for back cleaning of the filter element is therefore based, similar to that in the DE 10 2010 029 518 A described approach, on an at least temporary reversal of the flow of air through the filter element and thus causing "backwashing" of the filter, which causes the dust deposited on the filter element and the filter element thus cleaned (regenerated) is.
- a pressure measured value is detected and compared with a predetermined or predefinable threshold value.
- the pressure reading shows either a sufficient negative pressure in the volume in which the filter element is located, ie in the dust chamber or in the interior of the separator, or a high degree of contamination of the filter element or both.
- volume in which the filter element is located instead of the term "volume in which the filter element is located", reference will only be made to a separator as an example of such a volume. Other volumes in which the filter element may be located, for example the dust chamber of a vacuum cleaner, are to be read along with each mention of a separator.
- the return cleaning of the filter element can take place by reversing the direction of flow through the filter element.
- the clean gas valve arranged downstream of the filter element is opened, specifically as a function of an exceeding of the abovementioned threshold value.
- ambient air is drawn into the separator due to the negative pressure in the separator. This causes the reversal of the air flow through the filter element.
- the filter element is flushed with ambient air quasi. This filter backwashing releases dust deposited on the filter element and the filter element is regenerated.
- the clean gas valve is designed and arranged so that it blocks the air path to the vacuum cleaner fan when opening to the ambient air. This ensures a complete reversal of the air flow and thus leads to a particularly efficient cleaning of the filter element.
- a first variant of a vacuum cleaner according to the invention which comprises a filter element in a volume surrounding the filter element, for example in a separator, as well as a clean gas valve and a raw gas valve, is further characterized in that by means of the raw gas valve during suction operation of the vacuum cleaner an influx of Crude gas is blocked in the volume / the separator, wherein the raw gas valve upstream of the Abscheiders located and that by means of the clean gas valve, an air path in the vacuum cleaner between an air path to a blower of the vacuum cleaner and an air path to the ambient air is switchable, wherein the clean gas valve is downstream of the separator and upstream of the blower.
- a second variant of a vacuum cleaner according to the invention which comprises a filter element in a volume surrounding the filter element, for example in a separator, as well as a clean gas valve and a pressure sensor, further characterized by the fact that by means of the clean gas valve, an airway in the vacuum cleaner between an airway to a blower of the vacuum cleaner and an air path to the ambient air is switchable, wherein the clean gas valve is downstream of the separator and upstream of the fan, and that the clean gas valve in response to a pressure sensor supplied by the pressure sensor is controllable.
- the two variants differ by the raw gas valve and the pressure sensor.
- the two variants can be combined, but also solve the above task individually.
- the vacuum cleaner with a clean gas valve and a raw gas valve can be blocked by the raw gas valve, the flow of raw gas into the separator. This ensures sufficient for a filter backwashing of the type outlined above negative pressure in the separator. A measurement of the actual negative pressure by means of a pressure sensor or the like is not necessary, but optionally possible.
- the clean gas valve can be opened to the ambient air, in particular in such a way that the air path to the fan is blocked.
- the negative pressure in the separator causes the flow reversal and the filter rinse.
- a raw gas valve is not necessary, but nevertheless optionally possible.
- the pressure sensor it is detected whether there is sufficient negative pressure in the separator for a filter rinse. This can result from the fact that a suction nozzle of a floor nozzle of the vacuum cleaner is blocked manually or that an aerodynamically dense floor covering is extracted. The closing of the suction mouth or the dense flooring act like a closed raw gas valve.
- the clean gas valve can be activated such that it opens the air path in the vacuum cleaner to the ambient air, in particular in such a way that the air path to the fan is blocked. The negative pressure in the separator then again causes the flow reversal and the filter rinse.
- the filter rinse can be triggered manually or automatically.
- a manual triggering of the filter rinse closes a user the vacuum cleaner first the raw gas valve to block the raw gas supply and to ensure in this way a sufficient negative pressure in the separator. Then, after a short wait, the user opens the clean gas valve, causing backwashing of the filter element. Then the user returns the two valves to their original position.
- the filter flush can also be triggered automatically. For this purpose, a user actuates, for example, a control element provided for backwashing / regeneration of the filter element.
- This operator action initiates automatic triggering of the filter rinse by first automatically closing the raw gas valve, then - after a certain predetermined or specifiable waiting time - also automatically opening the clean gas valve to the ambient air to trigger the filter rinse and finally the two valves automatically be put back in their original position.
- the filter flushing can be fully automatic, for example, it is automatically triggered after the lapse of a predetermined or predetermined operating time of the vacuum cleaner.
- the filter flush is normally triggered automatically, depending on the pressure reading provided by the pressure sensor.
- the then automatically running process for automatic filter cleaning by reversing the flow direction is the method already described above.
- the approach described here and below is especially suitable for household vacuum cleaners, but is in principle suitable for all vacuum cleaner types, including industrial vacuum cleaners. Furthermore, the approach described here is basically also for use in process plants, for example in systems for air extraction or the like, into consideration to clean filter elements used there.
- the approach described here is especially for equipment or systems, ie in particular for vacuum cleaners and the like, in which the respective filter element acts as a surface filter, because dust and the like does not interfere with such surface filters in depth and thus particularly easy in a flow reversal and can be dropped efficiently. In the case of other filter elements, at least the dust which is also deposited there on the surface can be thrown off.
- the advantage of the solution according to the invention is that when used in a vacuum cleaner this is not turned off for the regeneration of the filter element and thus a possible suction process must not be interrupted, that a mechanical load on the filter folds, as they are in a back cleaning by means of one of the filter folds abutting rotating scraper, is completely avoided and that the re-cleaning process Overall, very quiet, because only the switching of a valve or possibly two valves is acoustically effective. The same applies accordingly to other applications of the approach presented here.
- a raw gas valve arranged upstream of the filter element is closed.
- the exceeding of the threshold value due to a corresponding pressure drop across the filter element indicates a high degree of contamination of the filter element.
- the filter rinse is then initiated by closing the raw gas valve and then opening the clean gas valve to the ambient air for filter rinsing.
- a raw gas valve arranged upstream of the filter element is closed and subsequently the clean gas valve is opened in response to an exceeding of the threshold value to the ambient air.
- the exceeding of the threshold value points to a sufficient negative pressure in the separator due to the blocked by means of the closed raw gas valve influx of raw gas into the separator.
- the filter rinse can be initiated by opening the clean gas valve to the ambient air.
- the clean gas valve is opened several times in succession for a predetermined period of time when the threshold value is exceeded.
- the return cleaning of the filter element by filter rinsing then takes place by means of individual purge air pulses.
- a swinging back and forth of the filter element or its filter medium is triggered. This leads to an even more efficient discharge of dust attached to the filter element.
- the filter cleaning and the resulting regeneration of the filter element are particularly effective and efficient in this way.
- the raw gas valve is closed before the clean gas valve is opened for the first time, and remains closed until the clean gas valve, after this was opened for the last time to the ambient air back into his Starting position is made.
- the crude gas valve can also be opened and closed in a countercyclical manner in the event of a multiple successive opening of the clean gas valve.
- the filter medium of the filter element is not only flowed through in multiple alternating directions, but the respective air pressure also causes a multiply changing deformation of the filter medium and thus a particularly effective discharge of attached dust.
- a control device encompassed by the respective device, that is, for example, a vacuum cleaner, is considered.
- This comprises, for example, a processing unit in the form of or in the manner of a microprocessor and a memory in which a control program executable by the processing unit is loaded, which when executed by the processing unit realizes all steps of the method.
- the invention is preferably implemented in software.
- the invention is thus on the one hand also a control program with by a computer system, namely the control device and its processing unit, executable program code instructions and on the other hand, a storage medium with such a control program, so a computer program product with program code means or other computer-executable instructions that are adapted to in a computer system cause the execution of a method as described here, and finally also a control device in whose memory such a control program is loaded or loadable as means for carrying out the method and its embodiments.
- execution in software and hardware, firmware, software and firmware and so forth is also possible, for example by checking that the threshold value is exceeded by the respective pressure measurement by means of a comparator implemented in hardware ,
- FIG. 1 shows in a simplified schematic representation of a section through a vacuum cleaner 10 in one embodiment as a vacuum cleaner, the following explained new approach for all types of vacuum cleaners 10 comes into consideration and is not limited to vacuum cleaner.
- the vacuum cleaner 10 comprises in a conventional manner in a dust chamber 12 a separator 14 with a turn arranged in the separator 14 filter element 16.
- the filter element 16 is in the illustration in FIG. 1 designed in the form of a filter cartridge and acts in the vacuum cleaner as a central filter.
- raw gas 18 is sucked in a manner known per se and the dust 20 contained in the raw gas 18 is mainly deposited on the filter element 16.
- the necessary flow air is generated in a conventional manner by means of a blower 22 and passes through a suction hose 24, of which only one for connecting the suction hose 24 provided on the vacuum cleaner 10 connecting piece 24 is shown in the vacuum cleaner 10 a.
- the purified by means of the filter element 16 raw gas 18 leaves the vacuum cleaner 10 as a clean gas 26 through an optional engine filter 28th
- FIG. 2A shows the filter element 16 FIG. 1 in a simplified schematic, enlarged and sectioned side view.
- FIG. 2B shows the same filter element 16 in a schematically simplified and sectional view of above.
- the filter element 16 comprises a folded / pleated filter medium 30 which can be cleaned by means of a rotatable scraper 32 functioning as a cleaning mechanism, as described, for example, in US Pat WO 2011/12479 A is described.
- the scraper 32 is usually operated by means of an electric motor (not shown) and set in rotation.
- the scraper 32 is integrally formed on an axle 34 which is rotatably mounted in a filter cover 36 and a filter bottom 38 of the filter element 16.
- this filter folds 40 Due to the folding / pleating of the filter medium 30, this filter folds 40, in which the scraper 32 engages.
- the filter folds 40 are deformed and - in analogy to the plucking of a guitar string - vibrated.
- deposited dust 20 (FIG. FIG. 1 ) dropped from the filter folds 40.
- the deformation of the filter folds 40 represents a mechanical load of the filter medium 30, so that long-term damage to the filter medium 30 are not excluded.
- the vacuum cleaner 10 must be turned off when the cleaning mechanism is activated, so that the discarded dust 20 is not sucked back to the filter element 16, so that the user must perform appropriate operations and, if necessary, interrupt the suction process.
- FIG. 3A and Figure 3B illustrate an alternative and also, namely in industrial vacuum cleaners, (for example from the DE 10 2009 029 518 A
- This approach is based on a supply of scavenging air 44.
- a purge air opening acting clean gas valve 46 which is downstream of the dust chamber 12, so pure side behind the dust chamber 12, arranged scavenging air 44, so ambient air , supplied against the flow direction of the raw and clean gas 18, 26, to free the filter element 16 from the dust 20.
- this is a filter backwash.
- suction operation in the dust chamber 12, in the suction hose 24 and in a respective attachment (not shown) from the blower 22 ( FIG. 1 ) generated negative pressure.
- the clean gas valve 46 By opening the clean gas valve 46, for example, for some 100 milliseconds the dust chamber 12 is pulsed flushing air 44 is supplied and thereby increases the air pressure in the dust chamber 12. This leads to the fact that the flow reverses abruptly through the filter element 16.
- the case of industrial vacuum cleaners usually very large dust chamber 12, for example, about 30 liters acts as an accumulator. The larger the accumulator is and the faster the clean gas valve 46 is opened and closed, the more intense is the cleaning of the filter element 16.
- FIG. 1 a vacuum cleaner 10 in the form of a household vacuum cleaner, so a canister vacuum cleaner, a vacuum cleaner or a hand or table vacuum cleaner, a cleaning of a covered by the vacuum cleaner 10 filter element 16 can achieve by means of filter rinse.
- FIG. 4 shows in a simplified schematic form the air flow in a vacuum cleaner 10.
- the flow path begins in the illustration on the far left with the there through the suction hose 24 (FIG. FIG. 1 ) incoming raw gas 18, which enters the separator 14 (or generally in a dust chamber 12) and exits the filter element 16 as a clean gas 26.
- the vacuum required for this purpose is generated by means of a blower 22 and to that extent is the presentation in FIG. 1 and the explanations made there reference.
- vacuum cleaner 10 are located in the flow path two valves, namely a clean gas valve 46 / clean gas valve 46 and a Rohgas workedes valve 48 / Rohgasventil 48.
- the raw gas valve 48 is located in the flow path upstream of the separator 14 (or in a vacuum cleaner 10 without separator 14 upstream of the dust chamber).
- the clean gas valve 46 is located in the flow path downstream of the separator 14 (or in a vacuum cleaner 10 without separator 14 downstream of the dust chamber 12), in the embodiment shown immediately downstream of the separator 14. Die Both valves 46, 48 are therefore also fluidly in front of and behind the arranged in the separator 14 filter element 16 or generally in front of and behind the arranged in the dust chamber 12 filter element 16th
- the raw gas valve 48 serves to close the flow path leading to the separator 14 / dust chamber 12.
- the crude gas valve 48 can therefore be designed as a one-way valve.
- the clean gas valve 46 is designed as a two-way valve and by means of the clean gas valve 46, either the flow path to the blower 22 or a flow path for introducing scavenging air 44 in the separator 14 / dust chamber 12 is released. By closing the crude gas-side flow path by means of the crude gas valve 48, the maximum negative pressure of the blower 22 is built up in the separator 14 / dust chamber 12.
- the crude gas valve 48 is closed and then briefly or once the clean gas valve 46 is opened, so that due to the negative pressure in the separator 14 purge air 44 flows into the inner volume of the separator 14, namely in the inner volume of the separator 14 is sucked.
- the scavenging air 44 sucked in the way of the pressure compensation taking place in this way flows through the filter element 16 in a direction opposite to the flow direction of the raw and clean gas 18, 26, so that a backwashing of the filter element 16 (filter backwashing) is achieved.
- This filter rinse or filter backwash is also referred to as backwashing the filter element 16.
- the dust 20 deposited on the surface of the filter medium 30 of the filter element 16 is discarded.
- the filter medium 30 is thus regenerated or at least regenerated to a large extent.
- the back cleaning of the filter element 16 can also be triggered automatically.
- an otherwise optional analog pressure sensor 50 or a pressure switch 50 is arranged, which detects the respective pressure loss across the filter element 16 as a measure of its degree of contamination.
- the negative pressure measured by the pressure sensor 50 is monitored. If a pressure measured value (negative pressure measured value) supplied by the pressure sensor 50 exceeds a predetermined or predefinable threshold value, the raw gas 18 is initially separated from the separator 14 automatically by a corresponding control of the raw gas valve 48. As a result, the maximum fan negative pressure is built up in the separator 14. After a predetermined or predefinable period of time, the lapse of which is awaited after the activation of the raw gas valve 48, for example a time interval in the order of about one second, the purging air 44 is switched on via a corresponding activation of the clean gas valve 46.
- connection of the scavenging air 44 by means of a corresponding control of the clean gas valve 46 also takes place for a predetermined or predefinable period of time (backwash time) and optionally several times in succession, wherein between each one control of the clean gas valve 46 for switching on the scavenging air 44 a predetermined or predetermined interval time is awaited.
- backwash time a predetermined or predefinable period of time
- the crude gas valve 48 is automatically opened again by a corresponding control.
- FIG. 5A and FIG. 5B show the schematically simplified representation of a vacuum cleaner 10 in FIG. 4 with symbols of electrical engineering. Accordingly, there are the two valves 48, 46 shown as a switch.
- the method described above ie the monitoring of the pressure measurement value of the pressure sensor 50, the closing of the raw gas valve 48 when the threshold value is exceeded, the subsequent and possibly multiple short-term opening of the clean gas valve 46 and the final closing of the raw gas valve 48 are controlled by a control device 52 provided for this purpose.
- This may be a separate control device 52, but also a device provided for controlling and / or monitoring other functions of the vacuum cleaner 10 or a functionality within such a device.
- the crude gas valve 48 may be permanently closed during the backwashing or each anticyclically with the opening of the clean gas valve 46 for switching on the scavenging air 44 in the meantime each short-term reopened. This is also done automatically by means of a corresponding activation of the valves 48, 46 by means of the control device 52.
- FIG. 5A shows with the valves 48, 46 shown there in the form of switches the situation during normal suction, so if the raw gas 18 via the open Rohgasventil 48 and exiting at the output of the filter element 16 clean gas 26 due to the blower 22 open toward the clean gas valve 46 finally the Stausauger 10 leaves again.
- FIG. 5B shows with the there also shown in the form of switches valves 48, 46, the automatic control of the valves 48, 46 by means of the control device 52 due to an evaluated by means of the control device 52 and previously under control of the control device 52 at the pressure sensor 50 detected pressure reading.
- the control is illustrated by the two block arrows.
- the switching position shown by the solid lines corresponds to the in FIG. 5A shown situation.
- the switching position shown with dotted lines is activated during backwashing of the filter element 16.
- control device 52 comprises a processing unit 54 in the form of or in the manner of a microprocessor and a memory 56.
- a control program 58 executable by the processing unit 54, which, when executed by the processing unit 54, implements all the steps of the respective process for back-cleaning the filter element 16.
- This detailed representation of the control device 52 is not repeated in the following figures for reasons of clarity, but also applies there.
- the memory 56 for example, in a designated memory location is a measure of a predetermined or predetermined waiting time between a control of the raw gas valve 48 and a (first) control of the clean gas valve 46 deposited. The same applies to all other times and parameters that are taken into account in the context of the procedure.
- FIG. 6 shows a specific embodiment of a vacuum cleaner 10 according to the approach proposed here.
- its control by means of the control device 52 is carried out automatically and in dependence on a each with a header, for example a floor nozzle 62, vacuumed floor covering 64, 66 and depending on the degree of contamination of the filter element 16.
- the floor covering 64, 66 and the degree of contamination of the filter element sixteenth are detected by the pressure sensor 50. This is at the in FIG. 6 embodiment shown executed as an absolute value sensor.
- the floor covering 64, 66 may be in the form of smooth floor or carpet.
- the operating point designated by P3 symbolizes the suction on a smooth floor with a new or regenerated filter element 16
- the operating point designated P1 shows the aerodynamic conditions in carpet and new or cleaned filter element 16
- the operating point denoted by P2 shows the state with saturated / dirty filter element 16 and sucking on carpet.
- An aerodynamic tightness of a system comprising the one hand, the vacuum cleaner 10 and the other hand, the flooring 64, 66 depends mainly on the aerodynamic tightness of the floor covering 64, 66 from.
- the dense pile of a carpet thus leads in comparison to a smooth floor to a significantly higher aerodynamic tightness of the entire system.
- a higher aerodynamic tightness also results in a higher negative pressure in the system.
- a higher aerodynamic tightness is accompanied by a correspondingly smaller volume flow q.
- FIGS. 8A and 8B The method according to which the vacuum cleaner 10 in FIG. 6 works to clean the filter element 16, is in FIGS. 8A and 8B shown, with the clean gas valve 46 again (see. FIGS. 5A, 5B ) is shown as a changeover switch to illustrate the switching between the airway to the blower 22 during normal suction operation and the airway for introducing purging air 44 during backwashing of the filter element 16.
- the switching of the clean gas valve 46 by means of the control device 52 is due to the size ⁇ p2. If it is detected by means of a pressure measurement value supplied by pressure sensor 50 that when cleaning a carpet or an aerodynamically very dense floor covering a threshold determined by the size .DELTA.p2 is reached or exceeded, the clean gas valve 46 is opened by appropriate control by means of the control device 52. Then purge air 44 flows into the separator 14 and by the thus effected backwashing of the filter element 16, this is regenerated.
- the representation in Figure 8A shows a situation with raised floor nozzle 62. In this situation, there can not normally be any exceeding of the above threshold.
- the representation in FIG. 8B shows at the same floor covering 66, namely an aerodynamically dense floor covering 66, for example, carpet floor, the situation with lying on the floor covering 66 floor nozzle 62. Due to the aerodynamic tightness of the floor covering 66 acts as a closing of the suction mouth of the floor nozzle 62, so ultimately as a closing a valve (see above: raw gas valve 48; FIG. 4 ) in the air path to the filter element 16 and the volume flow q to the filter element 16 collapses. In the separator 14 so that after a very short time the maximum negative pressure of the blower 22 is established.
- the clean gas valve 46 is controlled so that it opens to the ambient air and allows the influx of purging air 44, the negative pressure in the separator 14 is compensated by the inflowing scavenging air 44 while the filter element 16 as above already described by backwashing.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Vacuum Cleaner (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013108559.8A DE102013108559A1 (de) | 2013-08-08 | 2013-08-08 | Verfahren zum Betrieb eines Staubsaugers zum Rückreinigen eines vom Staubsauger umfassten Filterelements |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2835089A2 true EP2835089A2 (fr) | 2015-02-11 |
EP2835089A3 EP2835089A3 (fr) | 2015-08-19 |
EP2835089B1 EP2835089B1 (fr) | 2018-06-27 |
Family
ID=51266218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14180192.8A Active EP2835089B1 (fr) | 2013-08-08 | 2014-08-07 | Procédé de fonctionnement d'un aspirateur pour le nettoyage d'un élément de filtre enfermé dans l'aspirateur |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2835089B1 (fr) |
DE (1) | DE102013108559A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10729299B2 (en) | 2016-01-19 | 2020-08-04 | Festool Gmbh | Suction device |
CN115209775A (zh) * | 2020-04-01 | 2022-10-18 | 喜利得股份公司 | 根据需要的过滤器清洁 |
US11648500B2 (en) | 2017-05-02 | 2023-05-16 | Husqvarna Ab | Valve, use of such valve, separator comprising such valve and method of cleaning a separator body |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019117920A1 (de) | 2019-07-03 | 2021-01-07 | Alfred Kärcher SE & Co. KG | Saugvorrichtung und Verfahren zur Abreinigung eines Filters |
EP4223199A1 (fr) * | 2022-02-02 | 2023-08-09 | Nilfisk A/S | Procédé d'ajustement de performance sous vide |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011012479A1 (fr) | 2009-07-31 | 2011-02-03 | BSH Bosch und Siemens Hausgeräte GmbH | Aspirateur comportant un filtre |
DE102009029518A1 (de) | 2009-09-16 | 2011-03-24 | Robert Bosch Gmbh | Anordnung und Verfahren zum Betreiben einer Abgasnachbehandlungsvorrichtung |
DE102010029518A1 (de) | 2010-05-31 | 2011-12-01 | Alfred Kärcher Gmbh & Co. Kg | Staubsauger |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1245550B (de) * | 1964-04-10 | 1967-07-27 | Siemens Elektrogeraete Gmbh | Verfahren und Vorrichtung zur Reinigung eines Staubsaugerfilters |
DE29823411U1 (de) * | 1998-05-08 | 1999-05-20 | Kaercher Gmbh & Co Alfred | Sauggerät für Reinigungszwecke |
DE102005017568B4 (de) * | 2005-04-11 | 2024-04-25 | Alfred Kärcher SE & Co. KG | Saugreinigungsgerät |
RU2532017C1 (ru) * | 2011-02-11 | 2014-10-27 | Альфред Кэрхер Гмбх Унд Ко. Кг | Способ очистки фильтра пылесоса, а также пылесос для осуществления способа |
DE102011015574B4 (de) * | 2011-03-30 | 2022-11-24 | Festool Gmbh | Sauggerät mit einem Motorsensor |
-
2013
- 2013-08-08 DE DE102013108559.8A patent/DE102013108559A1/de not_active Withdrawn
-
2014
- 2014-08-07 EP EP14180192.8A patent/EP2835089B1/fr active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011012479A1 (fr) | 2009-07-31 | 2011-02-03 | BSH Bosch und Siemens Hausgeräte GmbH | Aspirateur comportant un filtre |
DE102009029518A1 (de) | 2009-09-16 | 2011-03-24 | Robert Bosch Gmbh | Anordnung und Verfahren zum Betreiben einer Abgasnachbehandlungsvorrichtung |
DE102010029518A1 (de) | 2010-05-31 | 2011-12-01 | Alfred Kärcher Gmbh & Co. Kg | Staubsauger |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10729299B2 (en) | 2016-01-19 | 2020-08-04 | Festool Gmbh | Suction device |
US11648500B2 (en) | 2017-05-02 | 2023-05-16 | Husqvarna Ab | Valve, use of such valve, separator comprising such valve and method of cleaning a separator body |
CN115209775A (zh) * | 2020-04-01 | 2022-10-18 | 喜利得股份公司 | 根据需要的过滤器清洁 |
Also Published As
Publication number | Publication date |
---|---|
EP2835089B1 (fr) | 2018-06-27 |
DE102013108559A1 (de) | 2015-02-12 |
EP2835089A3 (fr) | 2015-08-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2979602B1 (fr) | Filtre a air a retrolavage | |
EP2835089B1 (fr) | Procédé de fonctionnement d'un aspirateur pour le nettoyage d'un élément de filtre enfermé dans l'aspirateur | |
EP2672870B1 (fr) | Méthode pour nettoyer un filtre d'un aspirateur et l'aspirateur pour la mise en pratique de la méthode. | |
EP2421630B1 (fr) | Procédé pour décrasser les deux filtres d'un aspirateur à des fins de nettoyage et aspirateur pour mettre en oeuvre le procédé | |
EP2575587B1 (fr) | Aspirateur avec nettoyage de filtre par contre-courant | |
EP2451332B1 (fr) | Dispositif d'aspiration à des fins de nettoyage | |
EP3644816B1 (fr) | Nettoyage de filtre | |
EP1626647A1 (fr) | Aspirateur comprenant un dispositif de nettoyage a air comprime destine au nettoyage d'un filtre ceramique | |
DE19949095C2 (de) | Filterabreinigung in einem Schmutzsauger | |
EP1629762A2 (fr) | Dispositif d'aspiration comportant plusieurs moteurs d'aspiration | |
EP2612582B1 (fr) | Aspirateur et procédé destiné au fonctionnement d'un aspirateur | |
EP2052660A2 (fr) | Appareil d'aspiration | |
DE102015105059B4 (de) | Filteranordnung, Haushaltsgerät mit einer Filteranordnung und Verfahren zum Wechseln eines Filters | |
EP0873075B1 (fr) | Dispositif d'aspiration a des fins de nettoyage | |
DE102016118807A1 (de) | Rückspülbarer Luftfilter und Staubsauger mit einem rückspülbaren Luftfilter | |
EP2734098B1 (fr) | Balayeuse avec conteneur sous pression pour le nettoyage du filtre | |
DE102016119196A1 (de) | Staubsauger mit einem Filterelement | |
DE102015108558A1 (de) | Luftfilter | |
DE102015108559A1 (de) | Rückspülbarer Luftfilter | |
DE102014111868A1 (de) | Ortsfeste Basisstation für einen Saugroboter | |
DE2254490C3 (de) | Vorrichtung zum Abscheiden von Abfallfasern aus einem Luftstrom | |
DE3905565A1 (de) | Filtersack | |
DE102014108192A1 (de) | Staubsauger mit einem am Staubsauger entnehmbaren Filter sowie ein in einem solchen Staubsauger verwendbares Filter | |
DE602004009782T2 (de) | Haushaltsstaubsauger | |
EP1440651B1 (fr) | Aspirateur |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20140807 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R079 Ref document number: 502014008638 Country of ref document: DE Free format text: PREVIOUS MAIN CLASS: A47L0009190000 Ipc: A47L0009200000 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: A47L 9/20 20060101AFI20150714BHEP |
|
R17P | Request for examination filed (corrected) |
Effective date: 20160219 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
17Q | First examination report despatched |
Effective date: 20160802 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20180222 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R084 Ref document number: 502014008638 Country of ref document: DE |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1011573 Country of ref document: AT Kind code of ref document: T Effective date: 20180715 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 746 Effective date: 20180702 Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502014008638 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180927 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180927 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20180627 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180928 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181027 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502014008638 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180831 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180831 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180807 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20180831 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 |
|
26N | No opposition filed |
Effective date: 20190328 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180807 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180831 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20140807 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180627 Ref country code: MK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180627 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 1011573 Country of ref document: AT Kind code of ref document: T Effective date: 20190807 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190807 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230529 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20230822 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20230824 Year of fee payment: 10 Ref country code: DE Payment date: 20230831 Year of fee payment: 10 |