EP3512394A1

EP3512394A1 - Suction device suitable for the suction of ashes

Info

Publication number: EP3512394A1
Application number: EP16766915.9A
Authority: EP
Inventors: Christoph HÖRSCH; Roger Knee; Thomas Zerrer
Original assignee: Alfred Kaercher SE and Co KG
Current assignee: Alfred Kaercher SE and Co KG
Priority date: 2016-09-13
Filing date: 2016-09-13
Publication date: 2019-07-24
Anticipated expiration: 2036-09-13
Also published as: EP3512394B1; CN109715019B; WO2018050208A1; CN109715019A

Abstract

The invention relates to a suction device suitable for the suction of ashes, comprising a suctioned material container (12) having a receiving chamber (14) for suctioned material, a suction head (50), a suction fan device (52) located on the suction head (50), the suction head (50) being detachably connected to the suctioned material container (12), a suctioned material container lid (32) covering the receiving chamber (14) on the suction head (50) side, and a filter unit (66) located on a filter holder (76). The filter unit (66) has a clean side (68) facing the suction fan device (52) in the direction of a suction flow, and a dirty side (70) facing the receiving chamber (14). A filter cleaning device (58) for the filter unit (66) is located on the suction head (50), and the filter holder (76) has a filter holder opening (78), which is fluidically connected to the receiving chamber (14) and in which the filter unit (66) is positioned.

Description

Sucker, which is suitable for sucking ash

The invention relates to a sucker, which is suitable for sucking ash, comprising a suction container with a receiving space for suction material, a suction head, a Sauggebläseeinrichtung which is arranged on the suction head, wherein the suction head is detachably connected to the suction material container, a Suction container lid, which covering the receiving space toward the suction head, and a filter unit disposed on a filter holder having a clean side facing a suction flow of the suction blower means and a dirty side facing the receiving space.

From WO 2013/013702 AI a sucker, which is suitable for sucking ash, known, which comprises a uniform suction material container unit, in which a suction chamber is arranged. It is a filter unit provided with a filter holder and at least one filter, which is releasably supported on the suction material container unit. Furthermore, a suction head unit is provided on which a motor device is arranged and which is detachably supported on the filter unit and / or on the suction material container unit, wherein the filter unit is detachable with respect to the suction head unit.

The invention has for its object to provide a sucker of the type mentioned, which has a high suction power over a long period.

This object is achieved according to the invention in the suction device mentioned above in that a filter cleaning device for the filter unit is arranged on the suction head and in that the filter holder has a filter holder opening which is fluid-effectively connected to the receiving space and in which the filter unit is positioned. When ash is sucked, the fundamental problem arises that due to fine ash particles, the filter unit can clog up very quickly. Through the filter cleaning device, the filter unit can be cleaned in order to maintain the filter efficiency can, ie by one

To reverse the adding process.

The fact that the filter unit is positioned in the filter holder opening allows an effective cleaning process to be carried out. It is possible to clean a large and, in particular, substantially the entire area of the filter unit, and cleaned-off suction material particles can be essentially completely fed into the receiving space.

It can thereby be used effectively the volume of the receiving space before the filter unit must be removed and cleaned. It can be ensured over a longer period of high suction power.

It is particularly favorable if the filter unit is or comprises a flat-fold filter. A flat pleated filter comprises filter material sheets which are adjacent to each other and connected to each other, wherein the connection is made by folding. It can thus provide a high filter surface, which in turn can be cleaned off in an effective manner.

This results in a structurally simple construction, when the filter holder is arranged or formed on the suction material container lid. This also makes effective cleaning possible, since it can be ensured that essentially all cleaned-off particles of suction material get into the receiving space (and do not remain attached to the filter unit).

In particular, the filter holder opening is formed on the suction material container lid or communicates with an opening in the suction container in fluidwirksa connection. This results in an effective cleaning process. For the same reason, it is favorable if the filter holder opening is limited by a wall which is part of the suction material container lid or is arranged on the suction material container lid. It can thus achieve an effective cleaning effect.

In one embodiment, the wall is arranged distantly on the suction material container lid and protrudes in particular in the direction of the suction head. This results in a structurally simple construction. It is favorable if the filter holder has an upper side facing the suction head, and the filter unit is held supported on the filter holder via the upper side of the filter holder. It can be as loose hold the filter unit. As a result, an exchange or cleaning with removal of the sucker in a simple manner possible.

For the same reason, it is advantageous if the filter unit is mounted in the filter holder and is supported in particular supported by a suction head facing the top of the filter holder. It is advantageous if the filter holder opening has a cross-sectional area which corresponds to at least one corresponding cross-sectional area of the filter unit, that is to say the filter holder opening is larger than a corresponding projection of the filter unit onto this opening or at most as large as this projection. This can achieve an effective cleaning. Purified suction material particles can be fed substantially completely into the receiving space.

It is particularly advantageous if an intermediate area between the filter holder opening and the filter unit is assigned a sealing device for a fluid-effective sealing towards the suction head. This results in an effective operation and the penetration of suction material particles to the Sauggebläseeinrichtung is minimized. In particular, the sealing device is formed by a frame, via which the filter unit is held on the filter holder, wherein in particular filter material of the filter unit is connected to the frame. This results in a simple structural design while minimizing the required components.

It is particularly advantageous if the filter unit is assigned a grid for ember protection, which is positioned relative to a suction flow between the receiving space and the filter unit. By means of the corresponding grid it can be prevented that glow particles can reach the filter unit or at least the number of possible glow particles which can reach the filter unit is reduced. The grille is permeable to a suction flow for the suction operation. It is further configured such that during the filter cleaning process cleaned-off suction material particles can pass through the grid into the receiving space. Through the grid a protective function for the sucker is achieved.

In particular, the grid is held by the suction material container lid.

This results in a simple structural design.

In one embodiment, the grid is held on a wall which is arranged on the suction material container lid. This results in a simple structural design with an optimized protection of the filter unit. It may be provided that the wall projects projecting from the suction material container lid in the receiving space. This results in a simple space-saving design.

It is also possible that the grid is arranged in an opening of the suction material container lid. This also results in a space-saving design. In one embodiment, the grid is formed as a basket, which sits on the suction material container lid, and covers the filter unit to the receiving space with a permeability to a suction flow. Furthermore, there is a permeability for cleaned suction material particles to the receiving space out. This minimizes the number of required components.

In a further embodiment, it is provided that the grid has a smaller cross-sectional area than the filter holder opening and that the grid is seated on a funnel. It is thus possible to keep an opening area to the filter unit low, whereby the funnel ensures that cleaned-up waste material particles can effectively reach the receiving space.

It is advantageous if the grid between a first element and a second element is fixed in particular by clamping. In principle, the grid can be fixed, for example welded to a wall. Such welding is not necessary if the grid is held clamped between a first element and a second element. As a result, it is also possible, for example, to fix the grid to a region which is made of a plastic material. This results in a simple structural design with ease of manufacture. For example, the first element is a wall of the suction material container lid or a wall which is arranged on the suction material container lid. The second member is a frame or the like held on the first member. The fixation of the second element to the first element takes place for example via a thread, a clamp connection, a snap connection or the like. The grid is in particular clamped between the first element and the second element. In one embodiment, it is provided that the filter unit is at least partially immersed in the receiving space on which the filter holder is seated.

This results in a structurally simple structure. It may alternatively be provided that the filter unit is seated above the receiving space in relation to a direction from the receiving space to the suction head and in particular sits above a covering surface of the suction material container lid. This results in a large receiving volume for the receiving space.

It is advantageous if a hold-down device for the filter unit and / or the suction material container lid is arranged on the suction head. As a result, on the one hand, the suction-material container lid can be securely fixed with respect to the suction-material container. By a hold-down for the filter unit can be held loosely on the filter holder and replace it in a simple manner. However, the hold-down ensures that there is a counter force with respect to the pressure force caused by a suction flow which keeps the filter unit in its position.

It is advantageous if the suction material container lid is detachably arranged with respect to the suction material container and, in particular, is a part which is separate from the suction head. This allows access to the recording room and this can be easily emptied. In principle, however, it is also possible for the suction-material container lid to be arranged on the suction head.

In one embodiment, the suction material container lid is suspended from the suction material container, wherein in particular a fixing of the suction head to the suction material container causes a fixation of the suction material container lid. This makes it easy to empty the receiving space of suction material. The number of steps to "open" the recording room can be kept small.

It is particularly advantageous if the suction material container and the suction container lid are made of a non-flammable or flame-retardant material and in particular are made of a metallic material or a flame-retardant plastic. It is envisaged that the metallic material according to a minimum thickness of 0.35 mm IEC 60335-2-2. In particular, the fire protection class V-0 or Vl is realized. Furthermore, the GWFI (Glow-Wire Flammability Index) should be at least 850 ° (according to IEC 60695-2-12) for the sump container and filter. As a result, the risk of ignition is minimized.

In one embodiment, the filter cleaning device provides a (cleaning) air flow which flows through the filter unit in a direction from the clean side to the dirty side. It can thereby perform a Filterabreinigungsvorgang in a sense by blowing through the filter unit. The sucker can be trained in a structurally simple way.

In one embodiment, at least one channel is arranged in the suction head, which is fluidly connected to the filter unit and via which the filter unit can be acted upon by the air flow. As a result, the corresponding flow guidance on the suction head can be realized in a simple manner. In particular, the at least one channel is connected on the input side to an outer space of the suction head. As a result, an air flow can be generated in a simple manner.

It is advantageous if a closure element is provided, by means of which the receiving space can be closed in a fluid-tight manner with respect to an intake region. As a result, a negative pressure in the receiving space can be generated by a "normal" operation of the suction fan device. This negative pressure can be used to drive a cleaning air stream to effect a filter cleaning. For example, when (fast enough) a flap is opened, with the flap open, establishing a fluid-efficient connection between an outer space around the nipple and the receiving space, then air flows toward the receiving space. This air can flow through the filter unit to clean it. About the closure element, the receiving space can be completed directly or indirectly fluid-tight. (It can, for example, a suction hose, which is arranged on the suction material container with the receiving space, close.) In a Embodiment, the closure element is formed on the suction head. It is designed so that, for example, a manifold, which is arranged on the corresponding suction hose, can close, and thereby an airtight completion of the receiving space (including an interior of the suction hose) is achieved.

It is advantageous if the filter cleaning device comprises a control unit, by means of which a filter cleaning process can be controlled, wherein in particular a filter cleaning process can be initiated manually or automatically. The control unit may be formed by a corresponding actuator, which in particular is manually operable to supply a initiated by an operator Filterabreinigungsvorgang. It is also possible that the control unit comprises an automatism through which filter cleaning operations are performed without operator intervention.

For example, a filter cleaning is carried out at certain time intervals or a filter cleaning process is carried out in dependence on sensor signals which characterize the addition of the filter unit. In particular, a through-air turbine is used for a blower device of the suction blower device. Such a through-air turbine has a high energy efficiency.

The following description of preferred embodiments is used in conjunction with the drawings for further explanation of the invention. Show it :

Figure 1 is a sectional view of an embodiment of a nipple, which is suitable for sucking ash;

Figure 2 is an enlarged view of a portion of the nipple

according to Figure 1; FIG. 3 shows an exploded view of the nipple according to FIG

perspective view;

Figure 4 is an exploded view of the nipple of Figure 1 in one

-Sectional view;

Figure 5 is a partial perspective view of a variant of the teat according to Figure 1; Figure 6 is a partial schematic representation of a first embodiment of a suction material container and a filter holder arranged thereon;

FIG. 7 shows a schematic partial representation of a second exemplary embodiment of a suction material container and a filter holder arranged thereon;

FIG. 8 a schematic partial representation of a third exemplary embodiment of a suction material container and a filter holder arranged thereon;

Figure 9 is a partial schematic representation of a fourth embodiment of a suction material container and a filter holder arranged thereon;

Figure 10 is a schematic partial representation of a fifth embodiment of a suction material container and a filter holder arranged thereon; Figure 11 is a schematic partial representation of a sixth embodiment of a suction material container and a filter holder arranged thereon; Figure 12 is a bottom view of a seventh embodiment of a suction container and a filter holder arranged thereon in a partial view; and FIG. 13 shows a sectional view along the line 13-13 according to FIG. 12.

An embodiment of a nipple according to the invention, which is suitable for sucking ash ("ash cleaner"), which is shown in Figures 1 to 5, and designated 10, comprises a suction container 12. The suction container 12 with a receiving space 14 for suction.

The suction container 12 is barrel-shaped and has, for example, a cylindrical shape with a bottom 16 and a wall arranged on the bottom 16 and in particular cylindrical wall 18th

The suction material container 12 is made of a non-flammable material such as metal or a flame retardant material such as a flame-retardant plastic. The material of the suction container 12 corresponds in particular to the fire protection classification V-0 or V-1. The GWFI (Glow-Wire Flammability Index) for the suction container 12 is at least 850 ° C.

At the suction material container 12, a connection 20 for a suction hose 21 (FIG. 5) is arranged at a distance from the bottom 16. At the port 20 of the suction hose 21 is connected and suction material is inserted through the suction hose 21 into the receiving space 14.

The suction hose 21 is designed in particular as a metal hose.

In one exemplary embodiment, the connection 20 is formed by a separate part 22, which is fixed to the suction material container 12.

The suction container 12 has, for example, a circular opening 24, which is spaced from the bottom 16, on which the connection 20 is seated and via which a fluid-effective connection with the receiving space 14 and an interior of the corresponding suction hose is achieved.

In one embodiment, the suction container 12, a stand 26 is assigned. This stand 26 is, for example, annular and has a receiving space 28 for the suction material container 12. The receiving space 28 is bounded by a shoulder 30 which comprises a support surface for the suction material container 12. On this receiving surface of the suction container 12 can be set up.

The stand 26 is, for example, slidably formed on a hard floor and / or comprises rollers, via which the stand 26 and thus also the suction device 10 can be moved. (It can also be provided that "retractable" rollers are arranged on the stand 26 and, depending on the application, for "driven-in rollers", the vacuum cleaner 10 is slidable on a floor via the stand 26 or, in the case of "extended rollers", over the rollers is mobile on a floor.)

Disposed on the suction material container 12 is a suction material container lid 32, which sits on the suction material container 12 and covers the receiving space 14 at a distance from the bottom 16 towards an upper side (in a direction away from the ground).

The sump tank lid 32 is made of a non-flammable or flame-retardant material. It is made in the same way as the suction material container 12 from a metallic material or, for example, a flame-retardant plastic material. The material of the suction material container lid 32 corresponds in particular to the fire protection classification V-0 or Vl. In particular, the GWFI (Glow Wire Flammability Index) is at least 850 ° according to IEC 60695-2-12. In one exemplary embodiment, the suction-material container lid 32 comprises a covering region 36 with a covering surface for the receiving space 14. The covering region 36 has in particular a circular-disk shape. At the cover region 36, the suction material container lid 32 is surrounded by an edge region 38. In one exemplary embodiment, the edge region 38 has a first region 40 which surrounds the covering region 36 and projects transversely therefrom and, in particular, protrudes perpendicular to it or at a small acute angle. The first region 40 is in particular integrally connected to the cover region 36.

Arranged on the first area 40 is a second area 42, which is oriented transversely to the first area 40 and is oriented at least approximately parallel to the cover area 36. The second region 42 extends outward from the first region 40.

The second region 42 forms a support surface 44, which is annular. About the support surface 44 of the suction material container lid 12 can be placed on an end face 46 of the suction container 12. About the support surface 44 of the suction material container lid 32 is supported on the suction container 12.

When the suction material container lid 32 is arranged correspondingly on the suction material container 12, the first region 40 of the suction material container lid 32 dips into the suction material container 12 (see FIG.

It can be provided that at the second region 42 of the suction material container lid 32 has an annular groove 48 (see, for example, Figure 5), which has arisen, for example, by folding, bending or the like on the second region 42. About this channel 48, in which the

Wall 18 of the suction container 12 can be immersed on the front side 46, the suction material container lid 32 can be suspended in the suction container in the region of the end face 46. At the suction container 12 is detachably and in particular removably a suction head 50. On the suction head 50, a suction fan 52 is arranged, through which the receiving space 14 in a suction operation of the teat 10 is acted upon. The suction fan device 52 includes a motor 54 (in particular, an electric motor), and a fan unit 56 (suction fan) driven by the motor 54.

The blower unit 56 is designed in particular as a through-air turbine.

In the suction head 50, a control device for the vacuum cleaner 10 is arranged, via which a suction operation is controllable.

Furthermore, a filter cleaning device 58 is arranged in the suction head 50, which will be explained in more detail below.

The suction head 50 has a support region 60, via which it can be supported directly or indirectly on the suction material container 12.

In the exemplary embodiment shown, the suction head 50 is supported directly on the second region 42 of the suction material container lid 32, which in turn is supported on the end face 46 of the suction material container 12. By the suction head 50 of the suction material container lid 32 is pressed against the suction material container 12. It may be provided that a portion 62 of the support portion 60 of the suction head 50 is provided for support on the part 22 with the terminal 20.

For fixing the suction head 50 with the suction container 12 is a

Fixing device 64 is provided which comprises, for example, one or more latching elements, via which the suction head 50 can be latched to the suction material container 12. In particular, an axial fixation with respect to the direction 34 between the suction material container via the fixing device 64 12 and the suction head 50 realized. It can also be done a fixation transverse to the direction 34.

By means of the fixing device 64, a fixing and in particular axial fixing of the suction material container lid 32 to the suction material container 12 is achieved.

The vacuum cleaner 10 has a filter unit 66, which prevents suction material from the receiving space 14 can reach the suction fan 52. Based on the suction flow, the filter unit 66 is disposed between the receiving space 14 and the suction fan 52.

The filter unit 66 has a clean side 68, which faces the suction blower 52 relative to the suction flow, and has a dirty side 70, which faces the receiving space 14 in relation to the suction flow.

In one embodiment, the filter unit 66 is a flat-fold filter. It comprises a frame 72 (FIG. 3) which is circumferential and, for example, rectangular with respect to the outer contour. The frame 72 holds a flat-fold unit 74. The flat-fold unit 74 is formed by a plurality of filter material sheets arranged in parallel with adjacent filter sheets joined together and folding accomplished to achieve parallel alignment of adjacent filter sheets.

The clean side 68 is formed on one side of the flat pleat unit 74, and the dirty side 70 is formed on the other side of the flat pleat unit 74. The flat fold unit 74 has, in particular, a cuboid shape with respect to its outer dimensions. A filter holder 76 for the filter unit 66 is formed or arranged on the suction material container lid 32.

The filter holder 76 (see also Figure 6) comprises a filter holder opening 78, in which the filter unit 66 and in particular the flat fold unit 74 is positioned. Correspondingly, a cross-sectional area of the filter holder opening 78 is at least as large as a corresponding cross-sectional area of the filter unit 66 on the flat-fold unit 74 and, in particular, larger. Accordingly, a boundary contour of the filter holder opening 78 is adapted to an outer contour of the flat fold unit 74.

In one embodiment, the filter holder opening 78 is an opening 80 formed in the suction container lid 32 and thereby in the cover area 36. a wall 82 which bounds the filter holder opening 78 (the opening 80) is part of the covering area 36 of the suction container lid 32 (see Figure 6).

In particular, the filter unit 66 is through the filter holder opening 78

at least partially supported on the filter holder 76 and thereby suspended in particular.

In one embodiment, the frame 72 forms a sealing device 84, which covers and seals an intermediate region between the filter holder opening 78 (the opening 80) and the flat fold unit 74 in fluid-effective manner with respect to the suction fan device 52. The frame 72 also forms a seal to the sump container lid 32 and to a

eventual downholder.

In this embodiment (cf., in particular, FIG. 6), a relatively large portion of the flat fold unit 74 is immersed in the receiving space 14. As will be described in more detail below, an effective cleaning of the filter unit 66 by the filter cleaning device 58 can thereby be carried out. In one exemplary embodiment (FIGS. 1 to 6), a wall 86, which is positioned transversely to the covering area 36 and points into the receiving space 14, is arranged on the suction material container lid 32 and in particular on the covering area 36. The wall 86, which in particular surrounds the opening 80, for example rectangular, is oriented, for example, parallel to the direction 34.

The wall 86 holds a grid 88 spaced from the covering area of the suction container lid 32 on the suction container lid 32. This grid 88 completely covers the opening 80 or a flat fold unit 74 arranged at the opening 80, ensuring permeability for a suction flow. The grid 88 forms a glow protection, which is intended to prevent glowing particles from reaching the filter unit 66. A mesh size of the grating 88 is set accordingly to an expected glow particle size. In particular, the mesh size of the grid 88 is set to comply with IEC 61032, according to which a 2.5 mm diameter penetrating pin with an applied force of 3 N must not penetrate the grid 88.

The grid 88 is, for example, a metal grid or made of a flame retardant material such as a flame retardant plastic material.

The wall 86 on the suction hopper lid 32 surrounds a space 90 which is spaced from the cover area 36 and, for example, parallel to it oriented through the grid 88 "closed". (A suction flow may flow through the grid 88.)

The grid 88 is permeable to cleaned suction material, so that it can get into the receiving space 14. The grid 88 is spaced apart from the flat fold unit 74.

The flat fold unit 74 protrudes at least partially into this space 90. The space 90 with its dimensions relative to the wall 86 can be designed so that there is no or only a small distance to the flat fold material 74 (as indicated for example in FIG. 2) or a greater distance is present (as indicated in Figure 6). In one embodiment, the filter unit 66 is associated with a frame 92 (Figure 3), which is a loose part and is placed on the clean side 68.

In particular, the suction head 50 has a hold-down 94, which acts in the manner of a punch on the frame 92 and thereby presses the filter unit 66 down in the direction opposite to the direction 34.

This makes it possible, on the one hand, to keep the filter unit 66 "loose" on the suction material container lid 32 with the filter holder 76, in order to enable easy replacement, and, on the other hand, to prevent lifting in the suction operation due to the suction flow.

The frame 92 is dimensioned so that it can be placed within the frame 72 on the flat fold unit 74. The frame 92 provides for mechanical stabilization.

The filter holder 76 has an upper side 96, which faces the suction head 50 in the direction 34. About this top, which is formed by a corresponding upper side of the wall 82 at the opening 80, the filter unit 66 is supported and held in particular suspended on the filter holder 76.

The filter cleaner 58 is disposed in the suction head 50. In a suction operation, the suction fan 52 generates a suction flow with a main flow direction, which the filter unit 66 of the

Dirt side 70 flows through to the clean side 68 out. The filter cleaning device 58 provides an air flow with a main flow direction, which is opposite, that is, from the clean side 68 extends to the dirty side 70. As a result, the filter unit 66 is blown toward the receiving space 14; Dirt particles (in particular ash particles), which "hang" on the filter unit 66, can be blown off, at least to a large extent, and fall into the receiving space 14. As a result, filter cleaning is possible, which enables more effective suction operation.

The filter cleaning device 58 comprises (at least) one channel 98 (see, for example, FIG. 2), which on the output side is in fluid-effective connection with the clean side 68 of the filter unit 66 and on the input side with an outer space. The channel 98 has, in particular on the input side

Opening on an outer side of the suction head 50 or is on the input side in fluidly effective connection with such an opening. Through this channel 98 can be an air flow of the filter unit 66 to perform their cleaning, said air flow is coupled through the opening in the channel 98.

In one embodiment, an actuatable flap 100 is disposed on the channel 98. The flap 100 is pivoted on a pivot joint 102 about a pivot axis (which is particularly perpendicular to the direction 34).

In one exemplary embodiment, a closure element 200 (see FIG. 5) is arranged on the suction head 10, via which the connection 20 or the opening 24 can be indirectly closed with respect to the fluid in a fluid-effective manner. The suction hose 21 has a connection element 202, via which it can be connected (detachably) to the connection 20 of the suction material container 12. In particular, it can be inserted into the opening 24 at the connection 20. At an opposite region of the suction hose 21 sits another connection element 204, in particular for a suction nozzle. This further connection element 204 has an elbow 206 in one embodiment. At the manifold 206, a suction pipe or a suction nozzle can be connected. The closure element 200 is formed as a depression on the suction head 50 in such a way that the manifold 206 is submersed and thereby the suction hose 21 is closed at least approximately fluid-tight manner on the further connection element 204. FIG. 5 diagrammatically indicates immersion of the manifold 206 in the corresponding depression of the closure element 200. It is provided that the suction hose 21 is connected via the connection element 202 to the suction material container 12. (In FIG. 5, the suction hose 21 is separated from the suction material container 12 for illustrative reasons.)

In a suction operation of the teat 10, when the opening 24 is closed (directly or indirectly), a negative pressure predetermined by the power of the suction fan device 52 is generated in the receiving space 14. In the described embodiment, indirect closure of the opening 24 can be achieved by dipping the manifold 206 of the suction hose 21 into the recess of the closure element 200 (the suction hose 21 being connected to the connection 20 via its connection element 202). About the closure member 200, the indirect fluid-tight closure at the opening 24 can be achieved in a simple manner and in particular achieve such that the suction hose 21 does not have to be decoupled from the suction material container 12. In principle, however, it is also possible to generate the corresponding negative pressure in the suction material container 12 in that the opening 24 is closed fluid-tightly directly via a corresponding closure element, which in particular is a corresponding adjustable closure lid.

The flap 100 is arranged and designed such that in a suction operation (without activation of the filter cleaning device 58) and with the opening 24 closed, a corresponding negative pressure is present on the clean side 68 of the filter unit 66.

The negative pressure prevailing in the receiving space 14 due to direct or indirect closure of the opening 24 (for example by use of the closure element 200) is also present in the channel 98 up to the closed flap 100. The flap 100, when closed, provides a fluid-tight seal of the channel 98 to the exterior of the nipple 10.

In a normal suction operation, the flap 100 is closed. Upon actuation of the filter cleaning device 58, the flap 100 is moved in this embodiment and thereby positioned so that the air flow path through the channel 98 through to the clean side 68 of the filter unit 66 is opened. Due to the (under use of the closure element 200) pending negative pressure air flows from the outside when opening the flap 100 "abruptly" through the channel 98 through to the clean side 68 of the filter unit 66 and this is "blown" and cleaned it. The corresponding cleaning air flow is primarily driven by the previous negative pressure in the receiving space 14, which in turn was made with the flap 100 closed by direct or indirect closure of the opening 24. In the embodiment described above this is Closure effected indirectly by immersion of the manifold 206 in the recess of the closure element 200.

In one embodiment, an actuating device 106, which acts on the flap 100 and with which the flap 100 can be actuated manually, is seated on the suction head.

The actuating device 106 includes, for example, a spindle 108, which is articulated to the flap 100. By pressing on the spindle 108 via a corresponding actuating button 110, the flap 100 can be brought into a position in which a flow through the channel 98 is released.

In particular, the actuator 106 is configured to open the flap 100 sufficiently quickly to provide an effective purge air flow (driven by the negative pressure previously established in the containment space 14).

The filter cleaning device 58 comprises a control unit, by means of which a filter cleaning process can be carried out in a controlled manner.

In the described embodiment, the actuating device 106 forms a control unit, by means of which a defined filter cleaning process can be carried out manually. By actuation of the actuating device 106 and corresponding movement of the flap 100, cleaning current application of the filter unit 66 is released.

It is also possible for the control unit to carry out an automatic filter cleaning, which is triggered, for example, by time intervals or, for example, also triggered by sensors by measuring characteristic values of the filter addition (such as, for example, pressure drop or the like). In the solution according to the invention, a flat fold filter is used which can be cleaned in a simple manner (for example, in comparison to a cartridge filter) by a filter cleaning device 58. Through the filter holder opening 78 and in particular the opening 80 it is ensured that cleaned suction material can fall into the receiving space 14 below the filter unit 66.

In the case of ash vacuum cleaners, the fundamental problem is that the filter unit 66 (as the main filter) often clogs very quickly with fine ash during operation.

By means of the solution according to the invention, an effective filter cleaning takes place with which the filter unit 66 can be cleaned effectively and can be cleaned over a large volume range of the flat fold unit 74. As a result, a large volume of the accommodating space 14 can be effectively utilized. You get over a prolonged period of high suction power.

The filter cleaning has been described above with reference to a filter cleaning device 58 with an airflow coupled in via the outside space.

Other alternative or combinatorial Filterabreinigungsmöglichkeiten such as mechanical shocks of the filter unit 66 are possible.

The teat 10 has been described with reference to a first embodiment of a filter holder 76 (see FIG.

In a second embodiment of a filter holder, which is shown schematically in FIG. 7 and described by 112, a filter holder opening 114 corresponding to the filter holder opening 78 is correspondingly formed in the cover region 36 of the suction container lid 32. In this, the filter unit 66 is positioned and in particular positioned suspended over the corresponding frame 72. At the cover portion 36 sits a wall 116, which faces into the receiving space 14 and tapers towards an opening 118. Through the wall 116, a funnel 120 is formed toward the opening 118. In the opening 118 sits a grate 122 for ember protection.

The opening 118 has a smaller cross-sectional area than the filter holder opening 114. The funnel 120 provides for a filter cleaning for an effective supply of cleaned suction material to the receiving space 14th

In a third exemplary embodiment of a filter holder 124 (FIG. 8), a wall 126 projecting in the direction of the suction head 50 is arranged on the cover region 36. The wall 126 surrounds an opening 128 in the cover region 36. In the opening 128 sits a grid 130 as embers. This grid 130 is seated at least approximately flush with the cover region 36 on the suction material container lid 32.

The wall 126 has a filter holder opening 132 spaced from the opening 128. The filter unit 66 is inserted into this filter holder opening 132, wherein in particular the filter unit 66 is mounted on an end face of the wall 126 via its frame 72.

In a fourth exemplary embodiment of a filter holder 134 (FIG. 9), a filter holder opening 136 in which the filter unit 66 is positioned is formed in the cover region 36 of the suction container lid 32. This positioning is carried out in the same manner as described in connection with the filter holder 76.

At the cover region 36, the filter holder opening 136 is arranged to surround the receiving space 14, enclosing a basket 138, which is correspondingly formed from an ember protection grid. This basket 138 closes off the filter holder opening 136 and thereby the filter unit 66, that is covers it to the receiving space 14, wherein it is permeable to a suction flow and is permeable to a filter cleaning away from the filter unit 66 suction material, so that it can get into the receiving space 14. In the embodiment of the filter holder 134, so to speak, the wall corresponding to the wall 86 in the first exemplary embodiment according to FIG. 6 is also formed from a grid.

In a fifth exemplary embodiment of a filter holder 140 (FIG. 10), an opening 142 is formed in the cover region 36, in which a grid 144 for ember protection is positioned.

At the cover region 36 sits facing the suction head 50, a wall 146 corresponding to the filter holder 124. On this wall 146, a filter holder opening 148 is formed, in which the filter unit 66 is seated.

In the filter holder 124, the wall 126 is formed integrally with the cover portion 36. In the filter holder 140, the wall 146 is a one-piece or multi-part structure, which is subsequently connected to the covering portion 36, for example by gluing, screwing, etc. with this.

In a further exemplary embodiment of a filter holder 150 (FIG. 11), the suction-material container lid 32 is detachably fixed to the suction head 50 via a connection region 152. The suction head 50 (with the suction material container lid fixed thereto) is detachably attached to the suction material container. The connection region 152 may be designed such that it acts on the frame 72 of the filter unit 66 and thereby presses the filter unit 66 held against the suction container cover 32 at the corresponding filter holder opening.

The described embodiments of filter holders 112, 124, 134, 140, 150 basically function the same as described above. The filter unit is positioned in the corresponding filter holder opening, which has at least as large a cross-sectional area as the corresponding filter unit 66, so that an effective filter cleaning is enabled and no

significant barrier with respect to the filter cleaning between the filter unit 66 and the receiving space 14 is located.

In a further embodiment of a filter holder (FIGS. 12, 13), a suction material container lid 160 is provided. This has an upper side 162 towards the suction head 50 and a lower side 164 toward the receiving space 14.

It may be provided that the suction container cover 160 has a recess 166 on its underside 164. This indentation 166 is associated with a counter element on the suction material container 12. When the mating element penetrates into the indentation 166, the sump container lid 160 is correctly positioned on the sump container 12.

The suction container lid 160 has a filter holder opening 168. In this filter holder opening 168, the filter unit 66 is seated on a corresponding filter holder 170. The filter holder 170 in this case comprises a

Wall 172, which is transversely (and in particular vertically) positioned in a direction from the bottom 164 to the top 162 at a portion 174, wherein the areas 174, the filter holder opening 168 is formed. This wall 172 completely surrounds the filter holder opening 168 and has a rectangular shape in plan view.

On the wall 172, a strip 176 is arranged, which serves to support the filter unit 66.

Also disposed on the sump tank lid 160 is a wall 178 which projects transversely from the region 174 in a direction from the top 162 to the bottom 164. In particular, corresponding areas are the Wall 172 and the wall 178 aligned so that associated portions of the wall 172 and the wall 178 can be considered as a uniform wall which limits the opening 160, while a kind of flange both to the top 162 and to the bottom page 164 forms.

On the wall 178, which surrounds the opening 178, in the region of an end face 180, a grid 182 is positioned as ember protection as described above. The grid 182 is supported on an end face of the front end 180 of the wall 178.

On the wall 178, a frame 184 is held. The frame 184 is fixed to the wall 178. The fixation is done for example via a

Threaded connection, a tab connection, a snap connection or the like.

Between the frame 184 and the front end 180 of the wall 178, the grid 182 is clamped. The grid 182 is thereby fixed to the filter holder 170 by clamping between a first element, the wall 178 (and in particular its end face) and a second element, the frame 184, by clamping.

It is thus possible in particular to produce the wall 178 from a plastic material, since the grid 182 does not have to be welded to the wall 178 for fixing to the filter holder 170.

Otherwise, the filter holder 170 functions as described above. Suction cup

Sauggutbehälter

accommodation space

ground

wall

connection

suction

part

opening

stand

accommodation space

paragraph

Sauggutbehälterdeckel

direction

coverage

border area

First area

Second area

supporting

front

gutter

suction head

Sauggebläseeinrichtung

engine

blower unit

Filterabreinigungseinrichtung

support area

subregion

fixing device

filter unit clean side

dirty side

frame

Flat pleated unit

filter holder

Filter holder opening

opening

wall

seal means

wall

grid

room

frame

Stripper plate

top

channel

flap

pivot

actuator

spindle

actuating button

filter holder

Filter holder opening

wall

opening

funnel

grid

filter holder

wall

opening

grid

Filter holder port

filter holder 136 Filter holder opening

138 basket

140 filter holder

142 opening

144 grids

146 wall

148 filter holder opening

150 filter holder

152 connection area

160 sump tank lid

162 top

164 bottom

166 indentation

168 Filter holder opening

170 filter holder

172 wall

174 area

176 bar

178 wall

180 Front end

182 grids

184 frames

200 closure element

202 connecting element

204 Further connecting element

206 manifold

Claims

claims

A sucker suitable for sucking ash, comprising a suction container (12) having a receiving space (14) for suction, a suction head (50), suction fan means (52) disposed on the suction head (50), the suction head (50) releasably connected to the suction material container (12), a suction container cover (32; 160) covering the receiving space (14) towards the suction head (50), and a filter unit (66) attached to a filter holder (76; 112; 124; 134; 140; 150; 170) is disposed with a clean side (68) facing a suction flow of the suction fan means (52) and having a dirty side (70) facing the receiving space (14) therethrough characterized in that a filter cleaning device (58) for the filter unit (66) is arranged on the suction head (50), and in that the filter holder (76; 112; 124; 134; 140; 150; 170) has a filter holder opening (78; 114; 132 ; 136; 148; 168), which fluid-effective with the receptacle meraum (14) is connected and in which the filter unit (66) is positioned.

Sucker according to claim 1, characterized in that the filter unit (66) is or comprises a flat pleated filter.

A teat according to claim 1 or 2, characterized in that the filter holder (76; 112; 124; 134; 140; 150; 170) is arranged or formed on the suction container lid (32; 160).

A teat according to claim 3, characterized in that the filter holder opening (78; 114; 132; 136; 148; 168) is formed on the suction material container lid (32; 160) or in fluid-effective manner with an opening (128; 142) in the suction container container lid (32) Connection stands.

A nipple according to claim 3 or 4, characterized in that the filter holder opening (78; 114; 132; 136; 148; 160) is bounded by a wall (82; 116; 126; 146; 172, 178) which forms part of Suction container lid (32) is or is arranged on the suction material container lid (32).

6. Sucker according to claim 5, characterized in that the wall (126; 146; 172, 178) is arranged at a distance from the suction material container lid (32) and protrudes in particular in the direction of the suction head (50).

Sucker according to one of the preceding claims, characterized in that the filter holder (76; 112; 124; 134; 140; 150; 170) has an upper side (96) facing the suction head (50), and in that the filter unit (66) held over the top (96) of the filter holder (76; 112; 124; 134; 140; 150; 170) supported on the filter holder (76; 112; 124; 134; 140; 150; 170).

8. Vacuum cleaner according to one of the preceding claims, characterized in that the filter unit (66) in the filter holder (76; 112; 124; 134; 140; 150; 170) is mounted and in particular via a suction head (50) facing upper side ( 96) of the filter holder (76; 112; 124; 134; 140; 150; 170) is supported suspended suspended.

Sucker according to one of the preceding claims, characterized in that the filter holder opening (78; 114; 132; 136; 148; 168) has a cross-sectional area corresponding to at least one corresponding cross-sectional area of the filter unit (66).

10. Sucker according to claim 9, characterized in that a

Between the filter holder opening (78; 114; 132; 136; 148; 168) and the filter unit (66), a sealing device (84) for fluid-effective sealing is associated with the suction head (50).

A nipple according to claim 10, characterized in that the sealing means (84) is formed by a frame (72) over which the filter unit (66) is attached to the filter holder (76; 112; 124; 134; 140; 150; 170). in particular, filter material of the filter unit (66) is connected to the frame (72).

12. Sucker according to one of the preceding claims, characterized in that the filter unit (66) is associated with a grid (88; 122; 130; 144; 182) for ember protection, which relative to a suction flow between the receiving space (14) and the filter unit (66) is positioned.

13. A teat according to claim 12, characterized in that the grid (88;

122; 130; 144; 182) is held by the suction container cover (32; 160).

14. A teat according to claim 13, characterized in that the grid (88;

122; 130; 144; 182) is held on a wall (86; 116; 178) which is arranged on the suction material container lid (32).

15. Sucker according to claim 14, characterized in that the wall (86; 116; 178) projecting from the suction material container lid (32) projects into the receiving space (14).

16. Vacuum cleaner according to claim 13 or 14, characterized in that the grid (130) in an opening (128) of the suction material container lid (32) is arranged.

17. A teat according to claim 13, characterized in that the grid is formed as a basket (138) which sits on the suction material container lid (32), and the filter unit (66) to the receiving space (14) out with a permeability for a suction flow ,

Sucker according to one of claims 12 to 17, characterized in that the grid (122) has a smaller cross-sectional area than the filter holder opening (114) and that the grid (122) is seated on a funnel (120).

19. Sucker according to one of claims 12 to 18, characterized in that the grid (182) between a first element (178) and a second element (184) is fixed in particular by clamping.

20. Sucker according to one of the preceding claims, characterized in that the filter unit (66) at least partially in the receiving space (14) immersed in the filter holder (76) sits.

21. Sucker according to one of claims 1 to 19, characterized in that the filter unit (66) relative to a direction (34) from the receiving space (14) to the suction head (50) out above the receiving space (14) sits and in particular above a Cover surface of the suction container lid (32) sits.

22. Sucker according to one of the preceding claims, characterized in that a holding-down device (94) for the filter unit (66) and / or the suction material container lid (32, 160) is arranged on the suction head (50).

23. Sucker according to one of the preceding claims, characterized in that the suction material container lid (32; 160) with respect to the suction material container (12) is detachably arranged and in particular a separate from the suction head (50) part.

24. Sucker according to claim 22, characterized in that the suction material container lid (32; 160) is suspended from the suction material container (12), in particular a fixation of the suction head (50) on the suction material container (12) fixing the Suction container lid (32; 160).

25. Sucker according to one of the preceding claims, characterized in that the suction material container (12) and the suction material container lid (32; 160) are made of a non-flammable or flame-retardant material and in particular made of a metallic material or a flame-retardant plastic.

Vacuum cleaner according to one of the preceding claims, characterized in that the filter cleaning device (58) provides an air flow which flows through the filter unit (66) in a direction from the clean side (68) to the dirty side (70).

27. A teat according to claim 26, characterized in that in the suction head (50) at least one channel (98) is arranged, which is connected in fluid-sam with the filter unit (66) and via which the filter unit (66) acted upon by the air flow is.

28. A teat according to claim 26 or 27, characterized by a

Closing element (200) by means of which the receiving space (14) is fluid-tight with respect to an intake area closed.

29. Sucker according to one of the preceding claims, characterized in that the Fiiterabreinigungseinrichtung (58) comprises a control unit through which a Filterabreinigungsvorgang is controllable, in particular a Filterabreinigungsvorgang is manually or automatically initiated.