EP3334319A1 - Aspirateur - Google Patents

Aspirateur

Info

Publication number
EP3334319A1
EP3334319A1 EP16750648.4A EP16750648A EP3334319A1 EP 3334319 A1 EP3334319 A1 EP 3334319A1 EP 16750648 A EP16750648 A EP 16750648A EP 3334319 A1 EP3334319 A1 EP 3334319A1
Authority
EP
European Patent Office
Prior art keywords
external air
air valve
valve body
suction
actuating
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
Application number
EP16750648.4A
Other languages
German (de)
English (en)
Other versions
EP3334319B1 (fr
Inventor
Markus Barabeisch
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.)
Festool GmbH
Original Assignee
Festool GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Festool GmbH filed Critical Festool GmbH
Publication of EP3334319A1 publication Critical patent/EP3334319A1/fr
Application granted granted Critical
Publication of EP3334319B1 publication Critical patent/EP3334319B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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

Definitions

  • the invention relates to a suction device with a suction unit for generating a suction flow and with a suction housing, in which a dirt collection chamber is arranged, which has a suction inlet and via at least one filter and a suction channel assembly with the suction unit is fluidly connected to the suction channel arrangement between the filter and the suction unit is arranged at least one foreign air inlet closable by an external air valve, wherein the external air valve comprises an external air valve body for closing the forced air inlet, which is adjustable between a closed the outside air inlet closing position and the outside air inlet releasing passage position in which infiltrated by the external air inlet external air the at least one Filter for cleaning in the direction of Schmutzsammeiraums flows through.
  • a suction device of this type is described for example in EP 1 340 446 A1.
  • a so-called countercurrent cleaning is performed.
  • the external air valve body is abruptly acted upon by negative pressure provided by the suction unit in the passage position, so that external air can flow through the outside air inlet and the filter can flow in the direction of Schmutzsammeiraums, whereby particles adhering to the filter are repelled in the direction of the Schmutzsammeiraums.
  • the closing body is designed as a flap which has to be acted upon with a relatively high force, which is provided by an electromagnet, in the direction of the closed position.
  • the construction is expensive. It is therefore the object of the present invention to provide a suction device with an improved cleaning concept.
  • a suction device of the type mentioned there is a pressure control device for acting on a connected to the external air valve body actuating surface with negative pressure for adjusting the external air valve body in the direction of the closed position or to hold the external air valve body in the closed position, advantageously against in the direction of the passage position acting on the external air valve body, for example, generated by the suction unit, force having.
  • the pressure control device is advantageous for adjusting the external air valve body in the direction of the closed position or to hold it in the closed position, provided by applying the actuating surface with negative pressure against acting in the direction of the passage position on the external air valve body, for example generated by the suction unit, force or configured.
  • the force is or includes, for example, a vacuum force and / or a force which acts on the outside air valve body in the direction of the passage position due to the negative pressure generated by the suction unit.
  • negative pressure is applied to a front side or front side facing away from the actuating surface.
  • a spring force in the direction of the passage position on the external air valve body attack.
  • the spring force acts directly on the air valve body or indirectly to, for example, the later-explained actuator body which is connected to the external air valve body or coupled to.
  • the force can also include or be a weight force of the external air valve body and / or the body having the actuating surface, which engages in the direction of the passage position on the external air valve body.
  • the force can furthermore include or be a spring force, for example an opening spring arrangement or opening spring, which acts on the external air valve body in the direction of the passage position.
  • the direction of the passage position acting force is advantageously a force which exceeds a pure inertia force of the external air valve body or in addition to the inertial force is present.
  • the filter could also be referred to as at least one filter or a filter arrangement.
  • the filter may be part of a filter assembly.
  • the force for holding the external air valve body in the closed position is thus at least partially provided by negative pressure.
  • the pressure control device influences the vacuum conditions on the actuating surface.
  • the operation is particularly simple, since a direct mechanical or non-fluidic force by, for example, an actuating lever or the like in the direction of the closed position is not necessary - but is still possible.
  • the pressure control device is expediently designed for switching the negative pressure to the actuating surface or switching of negative pressure to the actuating surface. Furthermore, the pressure control device is expediently designed for switching from atmospheric pressure to the actuating surface. Preferably, the pressure control means may switch between atmospheric pressure and negative pressure acting on the actuating surface. If the provided by the pressure control device or connected negative pressure drops, for example, the vacuum provided by the suction unit can act on the front side of the external air valve body and thus thus, expediently abruptly, actuate by this negative pressure in the direction of the passage position.
  • the negative pressure holding the external air valve body is degraded very quickly or is degradable, so that the external air valve can reach at high speed in the direction of the passage position.
  • the cleaning or flow through the at least one filter against the usual flow direction during suction operation can thus proceed very quickly and effectively.
  • a negative pressure volume actuating the external air valve body in the direction of the passage position greater, for example at least 1, 5-2 times larger, preferably three times or four times or five times greater than one on the actuating surface for actuation in the direction of the closed position of the external air valve Body acting vacuum volume.
  • the larger vacuum volume can also be only slightly larger than the smaller vacuum volume, for example, only 5-10% larger, or preferably 20-30% larger.
  • the external air valve body associated with the actuation in the passage position associated vacuum volume of the suction device for example comprising the Schmutzsammeiraum, greater than one of the actuating surface for actuating the external air valve body toward the closed position or for holding the external air valve body in the closed position Vacuum volume is.
  • the negative pressure volume, the body actuates the external air valve body, for example, by acting on the front side to the dust collection chamber or towards Absaugkanalan extract in the direction of the passage position, that is significantly greater than the outside air valve body, so to speak in the closed position holding or adjusting in the closed position negative pressure volume.
  • the negative pressure volume that acts on the external air valve body includes the entire dust collection space or at least a large part of the dust collection space, which is large volume.
  • an underpressure volume which is enclosed between the actuating surface and the pressure control device, acts on the actuating surface.
  • only channel sections and / or the later-explained vacuum chamber or actuation chamber may be provided.
  • the suction device is expediently a portable suction device, for example a household suction device and / or a workshop vacuum cleaner.
  • the suction device may for example have wheels for rolling on a substrate.
  • the suction device may have one or more carrying handles, so that it is easy to grasp and transport.
  • the suction device may have a box-shaped or box-shaped shape.
  • the nipple housing may be designed in the manner of a system component or a transport container, so that it can be placed in a stack with at least one further transport container.
  • the nipple housing can for example be stacked on the other transport container o- be stacked under the other transport container.
  • the transport containers or the sucker housing may be stacked on each other in a stacking direction or a row direction.
  • the suction device in particular the nipple housing, form-fitting contours, for example hooks and / or hook receptacles, form-fitting projections or form-locking receptacles, latches, in particular pivot bolt or rotary latch, or the like other connecting means for positive connection with a transport container transversely to the stacking direction and / or along the stacking direction.
  • the nipple housing shear strength or tensile strength can be connected to the at least one further transport container.
  • the suction device according to the invention may not only have one, but at least two or more external air inlets.
  • the external air inlet can also be referred to as "at least one external air inlet.”
  • a separate external air valve can be assigned to each external air inlet. be ordered. But it is also possible that a plurality of forced air inlets, for example, two or three forced air inlets, are closed by a single external air valve.
  • the suction device can therefore not only have an external air valve, but "at least one external air valve”.
  • the closed position of the external air valve body is, for example, tight-fitting to a valve seat of the external air valve or an environment of the external air valve.
  • a distance between the valve seat and the external air valve body is present.
  • the external air valve body is, for example with respect to a valve seat pivotally movable, linearly movable or both stored between the passage position and the closed position. In particular, it is advantageous if the external air valve body is linearly movable.
  • the external air valve body may have a plurality of sections. For example, it is possible for the external air valve body to close or open a first outside air inlet with a first section and a second outside air inlet with a second section. Furthermore, the geometric configurations of the external air valve body depending on the structural requirement, according to the geometric conditions of the suction device or the like varied. It is conceivable, for example, that the external air valve body in the simple case has an annular or rectangular, in particular square closing surface. But even more complicated geometric contours are body in the closing surface of the external air valve body or the external air valve body as a whole readily possible, such as an embodiment as a trifoliate or structuriblättriges clover.
  • the filters may for example be arranged side by side or in the flow direction to the suction unit in a row.
  • the at least one filter expediently comprises a plate filter or a filter plate.
  • the at least one filter expediently closes an opening between the dust collecting space and the suction channel arrangement and / or is arranged in the opening.
  • the negative pressure for holding the external air valve body in the closed position can be provided in many ways, for example by a separate from the suction generator pressure generator. It is preferably provided that the suction unit of the pressure control device provides the negative pressure for acting on the actuating surface.
  • the pressure control device is advantageous for applying the actuating surface with the negative pressure with the suction unit or the separate pressure generator, which can also be described as a vacuum generator, flow connected.
  • a front side of the external air valve body is expediently actuated by negative pressure in the direction of the passage position of the external air valve.
  • the front side and the actuating surface which can be acted upon by the pressure control device with negative pressure, expediently act in opposite directions.
  • the front side of the external air valve body of the external air valve is expediently facing the suction channel arrangement.
  • the front side can also face the at least one filter and / or the dust collecting chamber.
  • the external air valve body of the external air valve can be actuated by negative pressure on its front side by the suction unit in the direction of the passage position.
  • the suction unit acts on the external air valve in the direction of the passage position and thus in the sense of cleaning the at least one filter, while in the opposite direction, ie in the direction of the closed position, the pressure control device acts on the external air valve body via the actuating surface with negative pressure and thus actuated ,
  • the area ratios of the front side of the external air valve body and the actuating surface, which can be acted upon by negative pressure, are preferably designed such that an effective surface in the direction of the closed position or surface which can be pressurized by negative pressure is larger than a surface effective in the direction of the passage position.
  • An effective pressurization surface of the suction duct assembly or the suction unit facing the front side of the external air valve body of the external air valve is preferably smaller than the influenceable by the pressure control device actuating surface. So if the same pressure acts on the one hand on the actuating surface and on the other hand on the front side of the external air valve body, this is actuated or driven in the direction of the closed position. The external air valve remains closed
  • the actuatable by the pressure control device actuating surface is advantageously greater than an effective pressurization surface of a negative pressure actuated by the suction unit in the direction of the passage position operable front side of the external air valve body.
  • the actuatable by the pressure control device actuating surface is advantageously greater than the cross-sectional area or passage area of the forced air inlet.
  • the surface of the actuating body about 1, 2-1, 5 times larger than the surface of the outside air inlet or the aforementioned front of the external air valve body.
  • an area difference of 20-30% is enough.
  • larger areas are differences of, for example, 30% to 40%, 40% to 50%, 50-60%, or the like.
  • the actuating surface is arranged on a side remote from the suction channel and / or the filter side of the external air valve body.
  • the external air valve body is in the closed position on a valve seat.
  • the foreign-air valve body is displaced in the passage position away from the valve seat to the suction channel arrangement and / or to the filter and / or the dirt collecting space or is thus driven for adjustment into the passage position.
  • the suction device has an opening spring arrangement and / or a motorized opening drive, for example an electromagnet or an arrangement of electromagnetic drives, for actuating or driving the external air valve body in the direction of the passage position.
  • the opening spring arrangement comprises, for example, an opening spring, in particular a helical spring.
  • the opening spring is expediently supported, on the one hand, on a component which is firmly connected to the nipple housing or provided by the latter and, on the other hand, on the external air valve body.
  • the suction device is a closing spring arrangement and / or a motor-driven closing drive for actuating or driving the external air valve body in the direction of the closed position.
  • the closing spring or closing spring arrangement thus supports, for example, the negative pressure hold, which is effective via the actuating surface.
  • the external air valve body or an actuating surface exhibiting actuator body is acted upon by the closing spring in the direction of the closed position.
  • the closing spring is supported for example on the actuator body or external air valve body and on a component connected to the nipple housing or on the nipple body directly from.
  • a spring force of the closing spring or closing spring arrangement is expediently greater than a spring force of the described opening spring or opening spring arrangement.
  • a closing drive is preferably an electromagnet or an arrangement of a plurality of electromagnets. If the at least one solenoid is turned off, for example, the body acting on the already explained front side of the external air valve vacuum of the suction unit operate the external air valve in the direction of the passage position.
  • the at least one external air valve body of the external air valve can be actuated by a motor drive on the one hand in the closed position and on the other hand in the passage position.
  • a single motor drive can drive the external air valve body in both directions of movement.
  • the pressure control device for relieving the actuating surface of which the external air valve in the direction of the closed position loading or driving negative pressure at least one connecting channel, which leads to the atmospheric pressure surrounding the suction device, or at least one inlet opening for atmospheric pressure.
  • the pressure control device for example, open this connection channel, so that atmospheric pressure acts on the actuating surface, so this is no longer actuated by negative pressure in the direction of the closed position, so that the foreign air valve body is adjustable in the direction of the passage position or released in the direction of the passage position. Then he can, for example, be actuated by the vacuum provided by the suction unit, which acts on the external air valve body, in the direction of the open position.
  • the pressure control device expediently has at least one control valve for opening or closing one or the connection channel to one or the atmospheric pressure surrounding the suction device.
  • at least one control valve so, for example, atmospheric pressure can be switched to the actuating surface, so that the external air valve is adjustable in the direction of the passage position or is.
  • the pressure control device has at least one control valve for opening or closing a flow connection to a negative pressure for the actuating surface providing pressure generator, for example, the suction unit or a suction unit separate from the pressure generator or vacuum generator.
  • a negative pressure for the actuating surface providing pressure generator, for example, the suction unit or a suction unit separate from the pressure generator or vacuum generator.
  • the control valve With the control valve, the negative pressure can be switched to the actuating surface or release the actuating surface of the negative pressure so to speak, which then allows an adjustability of the external air valve in the direction of the passage position.
  • the at least one control valve or at least one of the control valves is a manually operable control valve. It is also possible that the at least one control valve or at least one of the control valves has a control valve drive, by which it is adjustable between its positions.
  • the at least one control valve is acted upon by a spring in a position in which the actuating surface is acted upon by vacuum for adjusting the external air valve body in the direction of the closed position or for holding the external air valve body in the closed position.
  • the control valve is adjusted so to speak into an operating position in which the suction device is usually operable for the suction operation, namely without cleaning or external air impingement of the at least one filter.
  • the two aforementioned control valves may be separate from each other control valves or by a single control valve, for example, the switching valve explained below, be formed.
  • the pressure control device expediently comprises a switching valve or is formed by a switching valve which switches between a suction operating position, in which there is a flow connection between a pressure generator for the actuating surface providing pressure generator, eg the suction unit, and a flow connection between the actuating surface and the atmospheric pressure surrounding the suction device interrupts, and a Abcuriswolf is switchable, in which it interrupts the flow connection between the actuating surface and the pressure generator and the flow connection between See the actuating surface and the atmospheric pressure produces. With a single switching valve can then be switched, for example, between the Abthesesbetneb and the suction.
  • the actuating surface can be arranged for example on a rear side of the external air valve body.
  • the external air valve body may therefore in other words have the actuating surface integrally.
  • the actuating surface forms part of an actuating body, which is connected to the external air valve body or motion coupled.
  • the actuator body can be firmly connected to the external air valve body.
  • the actuating body with the external air valve body is motion coupled, i. that he entrains the external air valve body via a deflection gear, a sliding bearing or the like when it is actuated.
  • a movement game in particular a longitudinal game, between the actuator body and the external air valve body is present. The movement is, for example, in the respective end positions or at least one end position of the external air valve body, for example, the passage position and / or the closed position or both canceled.
  • a preferred embodiment of the invention provides that the actuating surface is arranged in an interior of an actuating chamber and a body having the actuating surface, for example, the external air valve body or the already explained with the external air valve body or motion-coupled actuator body, in particular based on a seal, movable a control chamber housing having the actuating chamber is mounted.
  • the seal is for example a folding seal and / or bending elastic.
  • the actuating body is movably mounted with reference to a labyrinth seal or gap seal with sufficient tightness with respect to the actuating chamber housing.
  • the actuating surface having body may for example form an actuator or have or be plate-shaped.
  • the actuating body may have different geometric contours, for example, have a round, in particular circular or even a polygonal, in particular square surface.
  • the seal extends between an outer circumference of the actuating surface-comprising body, in particular of the actuating plate, and an inner circumference of an opening on the actuating chamber housing.
  • the sucker housing can of course be multi-part lig, for example, have a main body and a lid. So if a sucker housing above and below the speech is to be understood including a base body or a lid or both of the sucker housing.
  • the cleaning device ie in particular the outside air inlet and the associated pressure control device, is arranged on the cover of the teat housing.
  • the cover On the cover is preferably also the suction unit.
  • the actuation chamber housing may form an integral part of the sucker housing. But it is also possible that the actuating chamber is arranged adjacent to the sucker housing. Preferably, the actuation chamber housing is arranged on a cover of the sucker housing.
  • the actuation chamber housing is supported on a wall surface of the sucker housing, for example a cover.
  • the outside air inlet is preferably located on a wall of the sucker housing, for example on a cover of the sucker housing, next to the actuation chamber housing.
  • the outside air inlet may for example be arranged between an upper side of a cover of the sucker housing or a wall side of the sucker housing and the actuation chamber housing.
  • the actuation chamber is expediently flow-connected to the pressure control device, for example one or more control valves which have already been explained, for example the switching valve.
  • the pressure control device in turn is in turn connected to the pressure generator, for example the suction unit or the separate pressure generator / vacuum generator.
  • the cleaning device or the pressure control device can be actuated manually. It is of course also an electrical or electronic control possible, for example, depending on contamination of the at least one filter.
  • a control device for controlling the pressure control device may be provided to control this for switching the external air valve between the passage position and the closed position.
  • the control device if, for example, the filter has reached a certain degree of soiling, this is preferably sensed by the control device, whereupon the control device activates the pressure control device for opening or closing the external air valve as a function of the degree of contamination.
  • a time-controlled, for example cyclical control of the external air valve is readily possible. For example, at predetermined intervals, for example every minute, every 5 minutes or the like, cleaning cycles can be run.
  • such a control opens the external air valve several times, for example at least twice, in quick succession, for example in bumps within a few seconds, and then again a longer break between such cleaning of the at least one filter.
  • FIG. 1 shows a perspective, longitudinally cut oblique view of a suction device with an external air valve located in the closed position
  • FIG. 2 shows the view according to FIG. 1 with the external air valve in passage position
  • FIG. 3 shows a detail enlargement D from FIG. 2
  • Figure 4 is the sectional view of Figure 1 frontally from the side and
  • Figure 5 is the sectional view of Figure 2 frontally from the side.
  • a suction device 10 is configured, for example, as a household vacuum cleaner or workshop vacuum cleaner. However, a stationary embodiment of the suction device 10 for a central extraction system is possible in principle.
  • the suction device 10 is shown in the drawing partially highly schematic. For example, it may have on its suction cup 12 rolls 1 1, with which it is rollable or turned off on a surface.
  • the sucker housing 12 has, for example, a lower part 20 and a cover 24.
  • the lower part 20 may be provided with the rollers 1 1.
  • On the lower part 20 is a suction inlet 18 for flowing a suction flow, so with dirt, dust or the like loaded air flow, provided in a dirt collecting space 21.
  • a connecting piece 19 for connecting, in particular for attaching or plugging, a hose 16 is provided.
  • the hose may for example be connected or connectable at its other end region with a suction nozzle, a hand-held machine tool or the like.
  • the dirt collecting space 21 is provided, in which the suction inlet 18 leads into it.
  • a filter 29 is arranged, which filters out in the suction flow T contained particles P, so that they are retained in the dirt collecting space 21.
  • an accumulation of dust or dirt S which is indicated in FIG. 5, is formed on a bottom wall 22 of the sucker housing 12, in particular of the lower part 20.
  • the particles P fall down, ie to the bottom wall 22, but at least partially adhere to a side surface 29A facing the dirt collecting space 21, for example a lower side, of the filter 29.
  • the filter 29 is thus gradually contaminated with particles P in the suction operation of the suction device 10 or added.
  • the suction flow T Downstream, however, the suction flow T is purified by the filter 29, so that it forms a clean suction T2, so to speak, when it flows over a side surface 29B of the filter 29 in the direction of an air outlet 17.
  • the suction unit 15 is connected to the air outlet 17.
  • the air outlet 17 is provided on a suction channel arrangement 25, which is arranged downstream of the filter 29 with respect to the suction flow T.
  • the suction unit 15 is, for example, a conventional suction turbine and an associated drive motor, which is not explained in detail.
  • a suction turbine and drive motor suitable as a suction unit.
  • the Schmutzsammeiraum 21 is bounded by the bottom wall 22 and side walls 23.
  • the lower part 20 is covered by a cover 24, which is suitably detachable from the lower part 20, so that in the dirt collection chamber 21 accumulated dirt can be easily removed.
  • a collecting container for example a filter bag, is arranged in the dirt collection chamber 21.
  • such a filter bag is not necessary because the filter 29 is effectively cleaned.
  • the suction channel arrangement 25 is provided on the sucker housing 12, in particular on the cover 24.
  • a holder for the filter 29 is attached to a top wall 24A of the lid 24.
  • the filter 29 is inserted into and closes an opening 24B of the top wall 24A so that the dirt is retained in the dust collecting space or dirt collecting space 21.
  • the peripheral wall 26 and the top wall 28 may define a suction channel of the suction channel assembly 25 leading to the air outlet 17.
  • a forced air inlet 30 for scavenging air or external air F which, contrary to the flow direction of the suction flow T, can flow through the filter 29 and thus repel particles P adhering to the filter 29 in the direction of the dirt collecting space 21.
  • a forced air inlet 30 for scavenging air or external air F which, contrary to the flow direction of the suction flow T, can flow through the filter 29 and thus repel particles P adhering to the filter 29 in the direction of the dirt collecting space 21.
  • the particles P fall off the side surface 29A and collect on the bottom wall 29 of the dirt collecting space 21.
  • the external air inlet 30 can be closed by an external air valve 35, so that this occupies its closed position L and in the normal suction operation of the suction device 10 according to Figures 1 and 4, the suction flow T from the suction inlet 18 through the dirt collection chamber 21 and the filter 29 passes in the direction of the air outlet 17 ,
  • the outside air inlet 30 is opened by the external air valve 35 in its passage position O, i.
  • the external air F can flow through the outside air inlet 30 and is sucked by the existing in the dust collection space 21 negative pressure volume or the pressure prevailing there, so to speak, whereby the filter 29 is cleaned of particles P.
  • the external air valve 35 comprises an external air valve body 37, which is designed in the manner of a plate 38 or has a plate 38.
  • the at least partially plate-shaped external air valve body 37 is in the closed position L at a Valve seat 36, which extends around the outside air inlet 30.
  • the forced air inlet 30 is closed.
  • a seal 39 is provided on the plate 38 or on the valve seat 36 or both for the tight closing of the outside air inlet 30.
  • the external air valve body 37 is displaceable on a guide 33 between the closed position L and the passage position O, in particular linearly displaceable guided.
  • a support body 32 in particular in the manner of a dome, is arranged on the top wall 24A, in the interior of which the guide 33 is provided.
  • In the guide 33 engages a guide projection 34 of the external air valve body 37 a.
  • the guide projection 34 projects, for example, in front of the plate 38.
  • An expedient embodiment of the invention proposes that a guide housing of the at least one external air valve is arranged in an interior space of the outside air inlet. This is also the case in the embodiment, i. the outside air inlets 30 extend around the support body 32.
  • the support body 32 is supported with one or more supports above the outside air inlet 30.
  • the external air inlet 30 has a non-circular peripheral contour, so that the largest possible flow cross-section is possible.
  • the outside air inlet has an approximately cloverleaf shape.
  • the peripheral wall 26 and the top wall 28 define a chamber 25A of the suction channel assembly 25.
  • the chamber 25A is located downstream of the filter 29.
  • the forced air inlet 30 is provided, for example, on a wall of the chamber 25A.
  • An actuating chamber housing 40 arranged next to the chamber 25A comprises, for example, a cover wall 41 and a peripheral wall 42 which delimit the housing 40.
  • the top wall 41 opposite the actuating chamber housing 40 is closed by an actuator body 43, the body 37 is coupled or connected to the external air valve.
  • the actuating body 43 comprises an actuating plate 44, from which a connecting portion 45 protrudes.
  • the connecting portion 45 is connected to the guide projection 34 of the external air valve body 37, for example by a connector.
  • the connecting portion 45 is inserted, for example, in the guide projection 34.
  • a bolt-like connecting element 46 for example a screw, connects the guide projection 34 with the connecting section 45.
  • the actuating body 43 is pressure-tightly connected to the actuating chamber housing 40, namely by means of an elastic wall or seal 47.
  • the actuating body 43 is connected in the seal 47, for example, with its outer edge region, in particular knotted.
  • For connection between the actuating body 43 and the seal 47 may be provided, for example, a bond.
  • a receptacle 48 is expediently provided, in particular a fork-shaped receptacle 48 into which engages the outer edge of the actuating body 43, in particular of the actuating plate 44.
  • An outer edge region 49 of the seal 47 for example a wall, is tightly connected to the peripheral wall 42, for example adhered thereto.
  • the peripheral wall of the edge region 49 may also be an elastic wall, so that the seal 47 bears elastically on the peripheral wall 42, for example, from the outside or the inside of the circumference.
  • the seal 47 preferably has one or more folds 50, the body 37 a movement of the operating body 43 for adjusting the external air valve body in the closing position L or the passage position O allow.
  • these folds 50 represent an option, ie that the suitably provided elastic configuration of the seal 47 could also allow such a movement play.
  • the elastic quality of the seal 47 facilitates the play of movement.
  • an actuating surface 51 is provided, which is actuated by negative pressure to an adjustment of the external air valve 35 in the direction of the closed position L.
  • the actuating surface 51 includes, for example, the actuation chamber 31 facing side of the actuator 44 or the actuator body 43. It is also expediently provided that the actuation chamber 31 facing side 52 of the seal 47 forms a part of the actuating surface 51 so that they also under negative pressure for a Adjustment of the external air valve 35 in the direction of the closed position L ensures.
  • a closing spring 53 which is supported on the one hand on the support body 32 and thus a structurally fixed component of the suction device 10 or the sucker housing 12 and on the other hand on the side facing away from the actuating surface 51 bottom or back of the actuator body 43.
  • An external air valve body or actuator body of a foreign air valve may be associated with a suction device according to the invention at least one stop damper, which serves for striking in the closed position or the passage position of the external air valve.
  • a damper 55 is provided for the external air valve body 37.
  • the damper 55 comprises, for example, a rubber element, in particular of elastic or flexible rubber, expediently sponge rubber.
  • the damper 55 is arranged, for example, on the outside air valve body 37 associated or facing the top of the support body 32.
  • An effective with negative pressure U loadable surface of the actuating surface 51 is greater than an effective loadable with negative pressure surface of a front side 54 of the external air valve body 37. This has the consequence that acts at the same negative pressure on the one hand to the actuating surface 51 and on the other hand on the front 54 , the external air valve 35 is moved to the closed position L or held in the closed position L.
  • a negative pressure which is provided by the suction unit 15, if not only as usual in the suction between the front 54 and the suction unit 15, but also between the suction unit 15 and the actuating surface 51st
  • the pressure control device 60 comprises, for example, a control valve 61 whose control valve member 62 can open or close a flow channel 63 between the actuation chamber 31 and the air outlet 17 and thus the suction unit 15. From the actuating chamber 31, a channel 64 leads into a valve chamber 65 of the control valve 61st The valve chamber 65 communicates on the one hand with the flow channel 63, on the other hand with atmospheric pressure of the environment of the suction device 10th
  • the control valve member 62 of the control valve 61 is guided in a guide channel 66, which opens on the one hand in the valve chamber 65, on the other hand, is open to the environment of the suction unit 10 on the upper side, where atmospheric pressure A prevails.
  • the guide channel 66 forms at least one connecting channel 66A to the atmospheric pressure A surrounding the suction device 10.
  • an inflow opening 69 is provided between a peripheral wall 67 delimiting the guide channel 66 and an actuating section 68, for example a rod-shaped actuating section.
  • the control valve member 62 is linearly adjustable in the guide channel 66 between a Saug plantesdian ( Figures 1, 4) in which the control valve member 62 closes the inflow opening 69, and a Abcuriswolf ( Figures 3, 4, 5) in which the inflow opening 69 is released.
  • the flow channel 63 is further connected to the channel 64 and thus to the actuation chamber 31, so that negative pressure U generated by the suction unit 15 acts on the actuation surface 51.
  • the control valve member 62 is moved out of fluid communication between the channel 64 and the flow channel 63.
  • the external air valve 35 is held by negative pressure of the actuating surface 51 in the closed position L or adjusted in this.
  • the control valve member 62 is in the Saug planteswolf, for example, with its outer periphery on the inner circumference of the peripheral wall 67 at. This is the upper position in the drawing.
  • the atmospheric pressure A from the environment of the suction device 10 can not act on the actuating surface 51.
  • the flow conditions during the suction operation or the suction flow T are shown in FIGS. 1 and 4 by arrows.
  • the drawn in Figure 1 transparent arrows symbolize the negative pressure U, which acts on the actuating surface 51.
  • the control valve 61 is adjustable in the cleaning position.
  • the control valve member 62 is moved out of the guide channel 66 (shown in phantom in Figure 4), whereby on the one hand the inflow opening 69 is released to the atmosphere, i. atmospheric pressure A can flow into the actuating chamber 31, on the other hand, the flow connection between the actuating chamber 31 and the suction unit 15 is interrupted.
  • the control valve member 62 then closes, for example, an inflow opening 73 of the flow channel 63.
  • the suction unit 15 can no longer act on the actuating surface 51 with negative pressure U, so that the force acting on the front side 54 of the external air valve body 37 negative pressure of the suction unit 15, the external air valve body 37 in the direction of Passage O operated.
  • the closing spring 53 is tensioned so that it can actuate the external air valve 35 in the direction of the suction operating position.
  • FIGS. 2 and 5 The flow conditions during the cleaning are indicated in FIGS. 2 and 5 by black arrows which are intended to indicate the repulsion of the particles P from the filter 29.
  • the control valve 61 is loaded by a spring 71 in the direction of the suction operating position.
  • the spring 71 is supported on the one hand on a housing of the control valve 61, for example on an upper end face 71 of the peripheral wall 61, from.
  • the spring 71 could also be supported on another structure-fixed component of the sucker housing 12.
  • the spring 71 is supported on an actuating head 72, which is arranged on the actuating portion 68.
  • the actuating head 72 is mushroom-shaped, for example.
  • the spring 71 is penetrated by the actuating portion 68, but could of course also be provided elsewhere, ie, for example, in addition to the operating portion 68th
  • a negative pressure volume 79 between the suction unit 15 and the actuating surface 51 is relatively small compared to a vacuum volume 78 that is associated with the front side 54.
  • the vacuum volume 78 includes, for example, the entire dirt collecting space 21.
  • control valve 61 is very quickly adjustable from the Saug congressswolf in the cleaning position when the atmospheric pressure A acts on the actuating surface 51. Also in the opposite direction, i. in the direction of the suction operating position, the suction unit 15 only the relatively small space of the actuating chamber 31 and the channels 63, 64 evacuate until the upcoming vacuum U the actuating surface 51 so heavily loaded that the external air valve 35 is actuated in the direction of the closed position L and there is held.
  • an opening spring 80 to load the actuating body 43 in the direction of the passage position O.
  • the opening spring 80 has a smaller spring force than the closing spring 53.
  • the opening spring 80 is shown schematically in FIG.
  • a motor drive 81 is provided for actuating the external air valve body 37.
  • the drive 81 may be a closing drive and / or an opening drive.
  • the drive 81 only to be provided to actuate the control valve member or the external air valve body 37 in the direction of the closed position L or only in the direction of the passage position O or in both directions.
  • the drive 81 may, for example, comprise an electromagnet 82 which acts in the direction of the closed position L and / or an electromagnet 83 which acts in the direction of the passage position O.
  • the drive 81 is shown schematically in FIG.
  • control valve 61 or more generally the pressure control device 60 may be driven by a motor, for example by a motor control valve drive 74.
  • the control valve drive 74 includes, for example, a linear electric motor, in particular an arrangement of one or more electromagnets.
  • the control valve drive 74 may operate only in the direction of the cleaning position or only in the direction of the suction operating position or in both directions.
  • the control valve drive 74 may be controllable, for example, by a controller 75, in particular a microprocessor control or an analog or digital electronic circuit.
  • the controller 75 controls the control valve drive 74, for example, to a cyclic actuation of the external air valve 35.
  • the controller 75 can also detect, based on sensors 76, 77, for example pressure sensors, a degree of soiling of the filter 29 and, depending thereon, a cleaning, i. a flushing of the filter 29 by opening the external air valve 35, cause.
  • the sensor 76 is arranged, for example, in the dirt collecting space 21.
  • the sensor 77 is arranged, for example, in the suction channel 25.
  • the sensors 76, 77 detect the pressure prevailing on site, better said negative pressure conditions, in particular a pressure difference at the filter 29. If the filter 29 is dirty, the pressure difference is large, smaller with a clean filter.
  • a pressure generator 87 may be provided, which is designed for evacuation or at least for generating negative pressure in the region of the actuating chamber 31.
  • the controller 75 or a separate controller 86 associated with the pressure generator 87 may be provided, which is designed for evacuation or at least for generating negative pressure in the region of the actuating chamber 31.
  • Pressure generator 87 for generating negative pressure U in the actuation chamber 31 and thus to actuate the external air valve 35 in the direction of the closed position L drive.
  • the controller 86 can also switch off the pressure generator 87, so that the external air valve 35 is no longer loaded in the direction of the closed position L and is thus adjustable in the direction of the passage position O.
  • the controller 86 may open, for example, a control valve in the manner of the control valve 61, so that atmospheric pressure can flow into the actuating chamber 31 and / or act on the actuating surface 51.
  • controllers 86 or 75 can be provided. Further, it is advantageous if such a controller or the controller 75 or the controller 86 is configured for driving a motor drive for an external air valve, for example for driving the drive 81st
  • one or more forces FO in the direction of the passage position O for example a weight G of the external air valve body 37 and / or of the actuating body 43, act on the external air valve body 37.
  • the negative pressure U2 generated by the suction unit 15 and acting on the front side 54 acts on the external air valve body 37.
  • the foreign air valve body 37 is expediently by acting on the actuating surface 51 with negative pressure U in the closed position L based on the pressure control device 60th and / or the actuation of the actuating surface 51 actuated with negative pressure U.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Abstract

L'invention concerne un aspirateur (10) comprenant une unité d'aspiration (15) destinée à générer un courant d'aspiration et comprenant un boîtier d'aspirateur (12) dans lequel est disposée une chambre collectrice de poussière (21) qui comporte une entrée d'aspiration (18) et est en liaison fluidique avec l'unité d'aspiration (15) par le biais d'au moins un filtre (29) et d'un ensemble conduit d'aspiration (25). Au moins une entrée d'air extérieur (30) pouvant être fermée au moyen d'une soupape d'air extérieur (35) est disposée sur l'ensemble conduit d'aspiration (25) entre le filtre (29) et l'unité d'aspiration (15). La soupape d'air extérieur (35) comprend un corps (37) de soupape d'air extérieur pour la fermeture de l'entrée d'air extérieur (30), lequel corps de soupape d'air extérieur peut être déplacé entre une position de fermeture (L) fermant l'entrée d'air extérieur (30) et une position de passage (O) dégageant l'entrée d'air extérieur (30). Dans la position de passage, l'air extérieur affluant à travers l'entrée d'air extérieur (30) traverse l'au moins un filtre (29) en direction de la chambre collectrice de poussière (21) pour le nettoyage. Selon l'invention, l'unité d'aspiration (10) comprend un dispositif de commande de pression (60) pour soumettre une surface d'actionnement (51) reliée au corps (37) de soupape d'air extérieur à une dépression (U) pour le déplacement du corps (37) de soupape d'air extérieur en direction de la position de fermeture (L) ou pour maintenir le corps (37) de soupape d'air extérieur (37) dans la position de fermeture (L).
EP16750648.4A 2015-08-11 2016-07-25 Appareil d'aspiration Active EP3334319B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015113189.7A DE102015113189A1 (de) 2015-08-11 2015-08-11 Sauggerät
PCT/EP2016/067637 WO2017025305A1 (fr) 2015-08-11 2016-07-25 Aspirateur

Publications (2)

Publication Number Publication Date
EP3334319A1 true EP3334319A1 (fr) 2018-06-20
EP3334319B1 EP3334319B1 (fr) 2020-09-16

Family

ID=56683900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16750648.4A Active EP3334319B1 (fr) 2015-08-11 2016-07-25 Appareil d'aspiration

Country Status (4)

Country Link
EP (1) EP3334319B1 (fr)
CN (1) CN107920706B (fr)
DE (2) DE102015113189A1 (fr)
WO (1) WO2017025305A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016100780A1 (de) * 2016-01-19 2017-07-20 Festool Gmbh Sauggerät
SE541827C2 (en) * 2017-05-02 2019-12-27 Husqvarna Ab Valve, use of such valve, separator comprising such valve and method of operating a separator
CN110549157B (zh) * 2019-09-10 2020-04-14 深圳市精雕数控设备有限公司 一种使用稳定且精度高的数控机床
DE102019217304A1 (de) * 2019-11-08 2021-05-27 Robert Bosch Gmbh Sauggerät mit einer Filterreinigungsvorrichtung
SE544324C2 (en) * 2020-07-09 2022-04-05 Husqvarna Ab A valve arrangement for an industrial dust extractor
CN115867371A (zh) * 2020-06-11 2023-03-28 胡斯华纳有限公司 用于工业除尘器的阀设备
WO2024010509A1 (fr) 2022-07-07 2024-01-11 Husqvarna Ab Agencements de pré-filtre et vannes pour un extracteur de poussière industriel

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29823411U1 (de) * 1998-05-08 1999-05-20 Kaercher Gmbh & Co Alfred Sauggerät für Reinigungszwecke
DE19820627A1 (de) * 1998-05-08 1999-11-18 Kaercher Gmbh & Co Alfred Sauggerät für Reinigungszwecke
DE10101219C9 (de) * 2001-01-12 2018-05-17 Nilfisk-Advance A/S Schmutzsauger
FR2836056B1 (fr) 2002-02-18 2005-02-04 Aldes Aeraulique Procede de decolmatage automatique du filtre d'un systeme d'aspiration centralise, dispositif pour ce procede et systeme d'aspiration centralise equipe d'un tel dispositif
DE102005017568B4 (de) * 2005-04-11 2024-04-25 Alfred Kärcher SE & Co. KG Saugreinigungsgerät
PL2046184T3 (pl) * 2006-07-29 2014-06-30 Kaercher Gmbh & Co Kg Alfred Sposób czyszczenia filtrów odkurzacza oraz odkurzacz do realizacji tego sposobu
WO2010121656A1 (fr) * 2009-04-22 2010-10-28 Alfred Kärcher Gmbh & Co. Kg Procédé pour décrasser les deux filtres d'un aspirateur à des fins de nettoyage et aspirateur pour mettre en oeuvre le procédé
ES2709904T3 (es) * 2009-07-07 2019-04-22 Kaercher Alfred Se & Co Kg Aparato de aspiración para fines de limpieza
DE102010029524A1 (de) * 2010-05-31 2011-12-01 Alfred Kärcher Gmbh & Co. Kg Staubsauger
DE102011006361A1 (de) * 2011-03-29 2012-10-04 Alfred Kärcher Gmbh & Co. Kg Staubsauger

Also Published As

Publication number Publication date
EP3334319B1 (fr) 2020-09-16
DE102015113189A1 (de) 2017-02-16
WO2017025305A1 (fr) 2017-02-16
CN107920706A (zh) 2018-04-17
CN107920706B (zh) 2021-03-09
DE112016003133A5 (de) 2018-03-22

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