Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
  • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
  • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
  • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
  • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
  • A47L9/1427—Means for mounting or attaching bags or filtering receptacles in suction cleaners; Adapters
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
  • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
  • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
  • A47L9/1427—Means for mounting or attaching bags or filtering receptacles in suction cleaners; Adapters
  • A47L9/1436—Connecting plates, e.g. collars, end closures
  • A47L9/1445—Connecting plates, e.g. collars, end closures with closure means
  • A47L9/1454—Self-sealing closures, e.g. valves

Definitions

• the invention relates to a Staubsaugerfilterbeute! and the use of a vacuum cleaner filter bag in a vacuum cleaner.
• EP 0 960 645 shows a multi-layer vacuum cleaner filter bag structure in which a coarse filter layer is arranged in front of a fine filter layer in the air flow direction.
• the coarse filter layer should have a relatively high thickness and a high pore volume. This can delay a clogging of the bag over a longer period of time.
• EP 1 123 724 shows a multi-layered vacuum cleaner bag, which comprises a base layer of paper, which is covered on the raw gas side by a prefilter of microfibers, which fulfills the function of a separating layer and can be temporarily lifted off the carrier layer.
• This separating layer completely covers the base layer to ensure that the filter bag is sufficiently stable and filter-effective even when the paper layer is completely destroyed.
• a vacuum cleaner filter bag which has on its inside a loose, the entire inside of the bag covering the diffusion layer.
• This diffusion layer serves to protect the filter layer following in the direction of flow from destruction by high-velocity particles.
• a protective layer in the form of a strip is provided inside the vacuum cleaner filter bag, which is also intended to prevent damage to the vacuum cleaner filter bag.
• This protective layer is arranged in such a way that particles entering through an inlet opening into the filter bag bounce directly onto the strip so that the subsequent layer remains protected
• a vacuum cleaner filter bag is provided with an inlet opening, with
• An incoming airflow may thus flow under the at least partially unconnected with the vacuum cleaner filter bag material layer so that it is at least partially spaced from the inside of the vacuum cleaner filter bag
• This air flow can continue to pass through the material layer away from the bag wall in the direction of the bag interior, resulting in a highly advantageous distribution of the filter cake in the interior of the bag, whereby the pedestal
• the special feature is thus that the Mate ⁇ - allage can be undercooled at least in part by an air flow, which then can pass through the Mate ⁇ allage in the interior of the bag again
• connection of the material layer at the at least one point may be provided on the side facing the inlet opening and / or the side of the material layer facing away from the inlet opening.
• the unconnected part is not connected to the vacuum cleaner filter bag either on the side facing the inlet opening or on the side facing away from the inlet opening.
• the edge of the material layer comprises the side edges of the material layer, the material layer, for example, furthermore has a slot, the edge also includes the edges of the material layer on the slot
• the material layer may have a smaller area than the surface of the inner side of the material layer. This advantageously enables an underflow of the material
• the area of the at least one part can make up at least 20% of the surface of the material layer.
• a sufficiently large unconnected part further enhances the effect described above
• a convex amount can be formed on a surface of the material layer
• the term convex has the following meaning.
• a set M c 9i 2 is called convex, if with every two points P and Q from this set also all points of the connection path between P and Q belong to M.
• the term convex is thus used in the conventional meaning, as described, for example, in IN Bronstein, KA Semendjajew, Taschenbuch der Mathematik, 25th edition 1991, BG Teubner Verlagsgesellschaft and Verlag Nauka, chapter 3.1.2. is mentioned.
• the convex sets in the plane include triangles, rectangles, or slices. This meaning is decisive for a flat material layer.
• a set M on a two-dimensional, possibly curved, surface in the three-dimensional space SH 3 is called convex, if with two points P and Q from this set all points of the connection path on the surface between P and Q also belong to M. This meaning is decisive for a curved material layer.
• the vacuum cleaner filter bag may be formed as a flat bag. In this case, it is preferable to judge the convexity in the flat state of the vacuum cleaner filter bag.
• the at least one part may include the projection point resulting from a perpendicular projection of the geometrical center of gravity of the material layer onto the surface on one side of the material layer.
• the at least one part may include a path leading through the projection point on the surface whose end points each form the edge of the material layer.
• the part extends from one part of the edge to another part of the edge. This makes it possible for an air stream to flow through under the material layer.
• the at least one part may include at least 10% of the edge of the sheet of material.
• the at least one part may include at least 30%, in particular at least 50%, in particular at least 70%, in particular at least 90% and / or in particular at most 95%, in particular at most 70%, of the edge of the material layer.
• the at least one part, in particular the convex amount formed thereby, can make up an area of at least 40%, in particular at least 60%, in particular at least 80%, of the surface of the material layer.
• the material layer may have a polygonal, in particular quadrangular, shape, and the at least one part may include a part of at least two, in particular opposite, side edges of the material layer.
• the material layer may be connected to the vacuum cleaner filter bag at a predetermined amount of points, preferably at exactly two points, and / or at two seams of the vacuum cleaner filter bag.
• the material layer may have a rectangular shape and be connected to the vacuum cleaner filter bag only along two, in particular opposite, side edges, in particular the short sides
• the material layer can be glued or welded to the vacuum cleaner filter bag, in particular the inside of the bag, for example
• a nonwoven fabric for example comprising a Femfa- servhes (meltblown), a Spmnvlies (Spunbond), a wet-laid web and / or a dry laid web, a paper or an air-permeable film, for example, a perforated or slotted film
• a nonwoven fabric for example comprising a Femfa- servhes (meltblown), a Spmnvlies (Spunbond), a wet-laid web and / or a dry laid web, a paper or an air-permeable film, for example, a perforated or slotted film
• the material strip may have an air permeability of 100-10000 l / (m 2 s), more preferably 1000-8000 l / (m 2 s), most preferably 1500-5000 l / (m 2 s)
• the material layer may have a surface area of 10 - 80%, preferably 15 - 30%, of the surface of the bag inside
• the material layer of the outlet opening of the vacuum cleaner filter bag may be connected opposite to the vacuum cleaner filter bag of the vacuum cleaner filter bag
• the at least one part may have at least one slot. Through such a slot, an underflow of the material layer is further promoted. If the material layer has at least one slot, in particular with a large length, the material layer can, for example, cover the entire surface of the inside of the vacuum cleaner filter bag. Nevertheless, an underflow is ensured by the at least one slot.
• the material layer may have a plurality of slots. In a flat bag, the material layer, if it has at least one slot, cover a bag wall, in particular the bag wall opposite the inlet opening over the entire surface.
• the vacuum cleaner filter bag can be designed as a flat bag with two rectangular filter material layers connected to one another along the edge.
• the air-permeable material layer may be connected to the filter material layer opposite the inlet opening of the vacuum cleaner filter bag, in particular in the center.
• the material layer may have a rectangular shape with a width of 10-80%, preferably 25-45%, the width of the associated filter material layer and / or a length of 60-100%, preferably 100%, of the length of the associated filter material layer.
• the material layer may comprise at least one laminate, in particular an SMS.
• a laminate several layers of material are bonded together. For example, a spunbond, a meltblown and a spunbond are linked together in an SMS.
• the material layer may comprise a film fiber net.
• Folienfasemetze arise for example in the fibrillation of extruded films and provide a precursor of nonwoven nonwoven fabrics (see eg "Nonwovens", W Albrecht, F Fuchs and W Kittelmann, Wiley VCH, Weinheim, 2000)
• the material layer can comprise a netting.
• a fiber network can be obtained by extrusion and corresponding laying down of the fibers
• the material layer may comprise, in the vacuum cleaner filter bags described above, individual interconnected fibers or consist of individual interconnected fibers.
• the longitudinal axes of the individual non-interconnected fibers may include an angle of less than 45 ° to each other.
• the fibers may be arranged parallel to one another be
• Unconnected and unconnected individual fibers are understood here to mean that the fibers are not connected to one another substantially along their longitudinal direction. However, it should not be ruled out that they can connect locally to one another via the at least one connection point with the vacuum cleaner filter bag
• the fibers cited in this application have relatively large fiber lengths of several centimeters to the length or width of the vacuum cleaner filter bag.
• the non-interconnected fibers may be staple fibers, particularly polypropylene
• the fibers may be substantially parallel to the direction of the air flow at the Emlasso réelle before deflection by the deflector or perpendicular to this direction aligned or substantially parallel to each other at an angle between 0 ° and 90 ° to include this direction in the case of a rectangular Vacuum cleaner filter bag, the fibers can thus be arranged in particular parallel to one of the edges These individual fibers can be arranged side by side with or without spacing from each other or overlapping each other
• Each of the fibers has first and second ends in fiber length and may be bonded to both the first end and the second end with the vacuum cleaner film. ter Vietnamese be connected.
• the connection may be formed by a transverse connection over the ends, such as a transverse welding or adhesive seam.
• all or some of the fibers perpendicular to the fiber longitudinal direction may be connected to the vacuum cleaner filter bag by one or more line or sheet connections.
• the line or area connections may be at an angle of less than 90 ° to the fiber's longitudinal direction.
• Individual fibers are an advantageous embodiment of the air-permeable material layer in that they are easy and inexpensive to manufacture, have high air permeability and easily allow the airflow entering through the inlet opening and deflected by the deflector to flow under them and thus to a spacing of the airflow from the fibers existing or this comprehensive material situation. By aligning the fibers and spacing between them, the air flow can be finely regulated.
• the above-described vacuum cleaner filter bags may comprise an additional air-permeable sheet of material disposed inside the vacuum cleaner filter bag connected at least at one location to the vacuum cleaner filter bag and / or the other air-permeable sheet of material and having at least a portion connected to the vacuum cleaner filter bag and / or the other air-permeable material layer is unconnected and includes part of the edge of the material layer.
• the above-described effect of the other or first material layer can be further enhanced.
• a part of an air flow can also flow between the two material layers.
• the two layers of material can be connected, for example, to two hems of the vacuum cleaner filter bag.
• one of the material layers or the two material layers may have at least one slot.
• both layers of material may have at least one slot at a different position.
• the material layers can be arranged at different positions or one above the other in the vacuum cleaner filter bag.
• the deflecting device can at least partially surround the inlet opening of the vacuum cleaner filter bag and be attached to the inside of the bag. In particular, a stable arrangement of the deflecting device is obtained, which can reliably perform its task even at high flow velocities
• the deflecting device can be designed to split the air flow into at least two partial streams
• the deflection device can be designed to divide the air flow into at least two partial flows with opposite flow directions
• air enters the direction of flow (Eintnttsstromungs ⁇ chtung) through a Eint ⁇ ttso réelle the deflector in this and is then deflected, so that a change in the Stromu ⁇ gs ⁇ chtung in the deflection direction with respect to the direction of flow at the constituso réelle, enters Under the flow direction of the air flow or Air flow direction is the main flow direction of the air, which generally runs parallel to a wall, for example a vacuum cleaner tube or nozzle. During operation of the vacuum cleaner, such a main flow direction results at any point through the vacuum cleaner tube into the bag, even if at some points Turbulences may occur
• Opposite flow directions means that both flow paths have a component in the plane perpendicular to the direction of flow, with which an air flow enters the Able ⁇ kein ⁇ chtung, ie a component perpendicular to Eint ⁇ ttsstromungs ⁇ chtung, wherein the two components enclose an angle of about 180 ° and wherein the components in this plane are in each case larger than the corresponding component parallel to the single-ended current direction.
• the deflection device may comprise at least one, preferably planar, deflection opening opposite the inlet opening.
• a deflecting or baffle surface By means of such a deflecting or baffle surface, in particular the velocity of the particles can be reduced in a suitable manner.
• a deflection surface opposite the inlet opening of the deflection device may in particular have a distance therefrom or a mean distance of between 1 cm and 15 cm, in particular 2 cm to 5 cm.
• the at least one deflection surface may have a larger area than the area of the inlet opening. This largely avoids that an air flow is merely deflected around the deflection surface and then strikes the bag wall opposite the inlet opening with a substantially unchanged flow velocity. Instead, it is achieved by the same or larger area that the air flow is deflected so that it can flow in a suitable manner under the material layer.
• Each deflection surface may have an area of 15 cm 2 to 100 cm 2 , in particular 40 cm 2 to 60 cm 2 .
• the at least one deflection surface may be arranged at a predetermined angle relative to the plane of the inlet opening.
• the deflection of the air flow to different parameters such as vacuum cleaner motor performance, arrangement of the vacuum cleaner filter bag, or its geometry and dimensions, Einströmwinkel, arrangement and dimensioning of the material layer, etc. can be adjusted and optimized.
• deflecting In a parallel to the plane of the inlet opening arranged deflecting a perpendicular to the plane of the inlet opening incoming air flow is deflected or deflected by up to about 90 °, which favors an underflow of the material layer in an advantageous manner.
• the deflection surface can be arranged perpendicular to the inlet flow direction or parallel to the plane of the inlet opening of the deflection device.
• the deflecting device can be designed in such a way that an air flow entering the deflecting device can be deflected in the deflecting device by at least 45 °, preferably at least 60 °, more preferably at least 80 °
• the deflection device may comprise the shape of a cylinder, truncated cone, cuboid or truncated pyramid, which has a Eintnttso réelle in the top surface and in the side wall of at least one Aust ⁇ ttso réelle
• the deflection direction of the previously described vacuum cleaner filter bags may be designed such that, in a first position, they have a reduced extent, compared to a second position, perpendicular to the plane of the inlet opening
• the deflector is collapsible Due to the smaller extent in the second position, the vacuum cleaner filter bag, in particular before use, bring in a very compact form This is particularly advantageous in flat bags, which can be folded in particular for packaging on certain formats By such fauxlegbare Deflectors make it possible to substantially increase the thickness of the folded-up bags.
• the deflecting device may preferably be made substantially flat
• the deflection device described above can be designed such that it can be brought by a suction air flow from the first position to the second position
• the vacuum cleaner filter bag during transport may have a deflector in the second position with a smaller extension, which then in operation of the Filter bag in the vacuum cleaner, for example, passes through the resulting due to the suction of air in the bag negative pressure in its operating position in which it then fulfills its deflection function
• the deflection device may comprise a spring element which exerts a restoring force on a part of the deflection device such that the deflection device can be brought from the second position into the first position as a function of a suction air flow
• Such a spring element allows the deflector on release of the suction air flow, for example, when the vacuum cleaner is switched from the first position back to the second position with reduced expansion perpendicular to the plane of the inlet opening
• the deflection device can have folding teeth, so that the deflection device can be brought from the first or second position into the second or first position.
• folding teeth allow the desired folding or folding in a simple and reliable manner
• the deflecting means may be in the shape of a cuboid having an inlet opening in the cover surface surrounding the inlet opening and an outlet opening in a side surface, the outlet opening occupying the entire side surface and the folding seams being provided at the side edges perpendicular to the side surface of the outlet opening and the deflector are arranged such that one of the folding noses in the flat state of the vacuum cleaner filter bag is provided with a rim remote from the unconnected one Part included, an angle of at least 15 °
• the edge with which the angle is enclosed comprises a side edge of the material layer
• the deflection device can furthermore be designed to close the inlet opening and / or inlet opening
• the deflecting device can also be rigid, so that collapsing is not possible
• the deflector of the previously described vacuum cleaner filter bags may comprise a substantially air-impermeable material, in particular a plastic, a dry or wet-laid nonwoven, a paper, in particular a cardboard, or a film
• the deflecting device may in particular be glued or welded to the filter material of the vacuum cleaner filter bag
• the invention further provides the use of a vacuum cleaner bag with a Mata tenage in a vacuum cleaner with a deflector, which is designed as part of a nozzle for a vacuum cleaner, further comprising a connecting means for connecting the deflector with a connecting piece which in turn the vacuum cleaner filter bag with a suction pipe Vacuum cleaner connects, includes, ready, wherein the connecting device and the deflecting device are designed such that the deflecting device is arranged in the interior of the vacuum cleaner filter bag during operation of the vacuum cleaner, and in that a stream of air entering the connecting device is deflected in the deflecting device, and
• the material layer is disposed inside the vacuum cleaner filter bag, connected to the vacuum cleaner filter bag at at least one location, and having at least a part unconnected to the vacuum cleaner filter bag and enclosing a part of the edge of the material layer
• the material layer can have a smaller area than the area of the inside of the vacuum cleaner filter bag. Furthermore, the area of the at least one part can make up at least 20% of the surface of the material layer
• a convex amount can be formed on a surface of the material layer
• the at least one part may include the projection point resulting from a perpendicular projection of the geometrical center of gravity of the material layer onto the surface on one side of the material layer
• the at least one part may include a path leading through the projection point on the surface, whose end points in each case touch the edge of the material layer
• the at least one part may include at least 10% of the edge of the material layer.
• the at least one part may include at least 30%, in particular at least 50%, in particular at least 70%, in particular at least 90% and / or in particular at most 95%, in particular at most 70%, of the edge of the material layer.
• the convex amount can make up an area of at least 40%, in particular at least 60%, in particular at least 80%, of the surface of the material layer.
• the material layer may have a polygonal, in particular quadrilateral, shape, and the at least one part may include a part of at least two, in particular opposite, side edges of the material layer.
• the sheet of material may be bonded to the vacuum cleaner filter bag at a predetermined amount of points, preferably at exactly two points, and / or at two seams of the vacuum cleaner filter bag.
• the material layer may have a rectangular shape and be connected to the vacuum cleaner filter bag only along two, in particular opposite side edges, in particular the short sides.
• the material layer can be glued or welded to the vacuum cleaner filter bag, in particular the inner side of the bag.
• the material of the material layer may comprise a paper, a nonwoven, in particular comprising a meltblown, a spunbond, a wet-laid nonwoven and / or a dry-laid nonwoven, or an air-permeable film.
• the material layer may have an area of 10% - 80%, preferably 15% - 30%, of the area of the associated inside of the vacuum cleaner filter bag. In the uses described above, the material layer may be connected to the inlet opening of the vacuum cleaner filter bag opposite to the vacuum cleaner filter bag
• the at least part of the material layer may have at least one slot in the uses described above
• the vacuum cleaner filter bag can be formed as a flat bag with two rectangular filter material layers joined together along the edge.
• the air-permeable material layer can be connected to the filter material layer opposite the inlet opening of the vacuum cleaner filter bag, in particular in the center.
• the material layer can have a rectangular shape having a width of 10 - 80%, preferably 25 - 45%, the width of the associated Filtermate ⁇ allage and / or a length of 60 - 100%, preferably 100%, the length of the associated Filtermate ⁇ allage
• the material layer may comprise at least one laminate, in particular an SMS.
• a laminate a plurality of material layers are connected to one another.
• SMS a spunbond, a meltblown and a spunbond are connected to one another
• the vacuum cleaner filter bags in the uses described above may comprise a material layer comprising or consisting of individual interconnected fibers or a fiber-optic network
• the directions of the longitudinal axes of the individual non-interconnected fibers may include an angle of less than 45 ° to each other, and at least a portion of the individual fibers may be juxtaposed with or without overlapping one another or overlapping one another
• At least part of said fibers may in this case be connected at the two ends of the fibers in Faserlangs ⁇ chtung with the vacuum cleaner filter bag, and / or a part of said fibers may be connected by one or more line or flat-like connections with the vacuum cleaner filter bag
• the vacuum cleaner filter bags may comprise an additional air-permeable material layer disposed inside the vacuum cleaner filter bag connected at least at one location to the vacuum cleaner bag and / or the other air-permeable sheet of material and having at least a portion associated with the vacuum cleaner filter bag and / or the other air-permeable material layer is unconnected and includes a part of the edge of the material layer.
• the deflection device can be designed to split the air flow into at least two partial flows.
• the deflecting device for dividing the air flow into at least two partial streams may be formed with opposite directions of flow.
• the deflection device may comprise the shape of a cylinder, truncated cone, cuboid or truncated pyramid, which has an inlet opening in the cover surface and at least one outlet opening in the side wall.
• the deflection device may in particular comprise at least one, preferably plane, deflection surface opposite the inlet opening.
• the at least one deflection surface may have an area that is the same size or larger than the area of the inlet opening.
• the at least one deflection surface may be arranged at a predetermined angle relative to the plane of the inlet opening.
• the deflecting device may comprise a substantially air-impermeable material, in particular a plastic, a dry or wet-laid nonwoven, paper, in particular cardboard, or a film.
• Figure 1 is a cross-sectional view of a vacuum cleaner filter bag with a deflector and a material layer
• Figure 2 is an enlarged view of a deflector in cross-sectional view
• Figure 3 is a perspective view of a deflector
• FIG. 4 is a perspective view of a nozzle for a vacuum cleaner
• Figure 5 is a cross-sectional view of a nozzle in a vacuum cleaner housing
• Figures 6A to 6H are plan views of the inside of a vacuum cleaner filter bag with a layer of material thereon;
• Figure 7 is a plan view of the inside of a vacuum cleaner filter bag with a layer of material with a projection of a deflector
• Vacuum cleaner filter bag
• Figure 1 is a very schematic representation of a vacuum cleaner filter bag 1 with a deflector 2 which is arranged in the interior of the vacuum cleaner filter bag 1 in the region of the inlet opening 3 of the filter bag 1. Furthermore, the vacuum cleaner filter bag comprises an air-permeable material layer 4 in the form of a material strip, which is connected to the inlet opening 3 opposite to the vacuum cleaner filter bag on the inside 5 thereof.
• the vacuum cleaner filter bag 1 is formed in the form of a flat bag.
• a flat bag is obtained if, for example, two rectangular filter material layers 6 are joined together along their side edges, for example glued or welded, so that along each side edge Hem 7 is created.
• Non-woven fabrics and / or conventional filter papers can be used as filter materials, for example.
• it may be a multilayer structure, as described for example in EP 0 960 645.
• the matehaNage 4 is connected to the inlet opening opposite the filter material layer 6 in the middle.
• the deflection device 2 has the shape of a cuboid, in which two side surfaces each have an outlet opening which occupies the entire side surface in each case.
• the outlet openings are arranged parallel to the plane of the drawing, so that an air stream entering the deflection device 2 through the inlet opening is split into two partial streams with opposite flow directions, these partial streams emerging from the drawing plane or into the drawing plane from the deflection device escape. A detailed description of such a deflection device will be made below with reference to FIGS. 2 and 3.
• the material strip 4 can be connected to the vacuum cleaner filter bag in various ways, as long as it is possible for an air flow to flow between the material layer and the inner side of the bag. Examples of different ways of connecting the material layer to the vacuum cleaner filter bag, in particular the inside of the bag, will be explained with reference to FIGS. 6A to 6F.
• the material layer can be, for example, a spunbond or an SMS. However, other materials are also possible, as explained for example with reference to Figures 8 to 10 below.
• Figure 2 shows schematically in cross-sectional view an example of a deflection in cuboid shape.
• Figure 3 is a perspective view of such a deflector, with some details of Figure 2 omitted here.
• the base 8 of the cuboid deflection device 2 is arranged parallel to the plane of the inlet opening 3 or parallel to the plane of the inlet opening 9 of the deflection device and fulfills the function of a deflection surface or baffle plate.
• Two of the side surfaces perpendicular to the baffle plate each have an outflow opening, each occupy the entire side surface of the cuboid.
• the two other side surfaces (left and right in the view shown) are closed.
• the dimensions of the cuboid deflection device may be 8 cm ⁇ 8 cm ⁇ 3 cm (width ⁇ depth ⁇ height).
• the material may be, for example, cardboard
• the deflecting device 2 is designed such that it can be brought from a first to a second position
• the edges between the base 8 and the two side surfaces or between the side and the flat surface Falzlmien 10 are provided make it possible to collapse the deflecting device in order to reduce the expansion of the deflecting device perpendicular to the plane of the opening.
• suitably equipped vacuum cleaner filter bags can be collapsed into this position in a compact manner and transported
• an (optional) spring element 11 is further provided, which is here in the form of a spiral spring If a suction air flow is present, for example by air sucked and thus a negative pressure is generated in Beutelinnem, the deflection device 2 against the restoring force of the spiral spring 11 unfolds and assumes its cuboid shape With weak or vanishing suction air flow, the bending spring 11 acts so that the side surfaces and the base surface 8 to the side (in the view shown to the left) are folded, so that the deflector is folded flat When folded flat then lies the right side surface substantially in a plane with the base 8
• the bending spring 11 may be glued, for example, with the base and the right side surface Alternatively, the bending spring between two Mate- ⁇ allagen (for example, cardboard), through which the base 8 and the side surface e be clamped
• Such a collapsible deflection device can in particular also serve to securely close the inlet opening and the inlet opening.
• a further closure element is unnecessary
• a holding plate 12 is connected, with which the filter bag can be fixed in a vacuum cleaner housing this plate can be glued or welded, for example, with the Filtermate ⁇ al 6
• a permanent magnet in or on the holding plate 4 and a ferromagnetic element in or on one of the side surfaces or the base 8 of the deflector be provided so also a jerking device is formed, which allows collapsing the deflector with decreasing suction air flow
• a sealing element 13 may be provided, which is arranged here between the deflecting device and the inner side of the bag.
• the sealing element can also be arranged within the deflecting device on the upper surface in which the Eint ⁇ ttso réelle 9 is located Sealing element 13 is provided around the entire inlet opening 3.
• This sealing element 13 achieves, in particular, a suitable seal after the introduction of a connecting piece 14 which connects to a vacuum cleaner tube.
• the sealing element can comprise, for example, an elastomer, a rubber or a closed foam
• the deflection device can be connected to the inner side of the bag in a different way.
• the deflection device is adhesively bonded to the inner wall of the bag.
• the upper side of a deflection device which is made of cardboard, for example, can be coated with PP (polypropylene), so that when welding a PP Holding plate by means of ultrasound at the same time the deflector is welded to the bag wall
• the deflecting device can also assume a different shape. Possible shapes are, for example, a truncated cone, truncated pyramid or cylindrical shape
• the deflection device is provided on the bag side, ie, the vacuum cleaner filter bag itself comprises the deflection device.
• FIGS. 4 and 5 An alternative to this is illustrated in FIGS. 4 and 5, in which a connection piece for a NEN vacuum cleaner is schematically illustrated, with which a vacuum cleaner filter bag can be used with a correspondingly arranged material layer.
• Figure 4 shows schematically a cylindrical nozzle 14 for a vacuum cleaner with a deflector 15 and a connecting device 16.
• the nozzle shown can be provided for example as a retrofit element for conventional vacuum cleaners.
• an air flow with a flow direction which is schematically indicated by the arrow 17, enters the connecting device 16.
• the connecting device 16 serves to establish a connection of the nozzle 14 with a (not shown) connecting piece of a vacuum cleaner.
• the deflection device 14 has an inlet opening 18, into which an air flow from the connection device 16 of the connection piece enters the deflection device 15.
• two opposite outlet openings 21 are provided in the side wall 20 of the cylindrical deflector 15.
• the nozzle 14 is integrally formed, for example as an injection molded part.
• the connecting device 16 ends directly above the upper edge of the outlet openings 21.
• the side wall 20 of the deflecting device 15 thus only comprises a narrow edge area above the outlet openings 21.
• FIG. 5 the arrangement of a nozzle 14, as shown in FIG. 4, in a vacuum cleaner housing is shown schematically in cross-sectional view.
• an opening 23 is provided for receiving a connecting piece 24 of a suction pipe or a vacuum cleaner hose can be inserted into the opening 23 and fixed there, for example, with a snap closure
• the connection piece 24 is then also in the vacuum cleaner side provided connecting piece 25 of the vacuum cleaner
• the connecting piece 25 is connected to the wall 22 of the Staubsaugergehauses, for example glued Alternatively, the connecting piece 25 may be formed emstuckig with the wall 22 As a further alternative, the connecting piece 25 may be arranged nondestructively releasably on the wall 22 by, for example screwed to this The connection piece 25 engages in the inlet opening 3 of a vacuum cleaner filter bag 1.
• the connection piece 25 from FIG. 5 corresponds to the connection piece 14 in FIG. 2
• the nozzle 14 may be connected in various ways with the connecting piece 25
• the nozzle 14 may for example be plugged or screwed externally on the connecting piece 25
• the deflector can also be inserted into the connecting piece 25 (as shown in the figure) or be screwed
• glue or weld the connecting piece and the nozzle with each other.
• Another alternative is to emstuckig the connecting piece and the nozzle, for example as an injection-molded part
• the connecting piece 14 comprises a connecting device 16 and a deflecting device 15.
• the connecting device 16 opens in the direction of flow 17 into the inlet opening 18 of the deflecting device 15
• a stream of air is sucked through a vacuum cleaner pipe or vacuum cleaner hose.
• the direction of flow of this air stream runs parallel to the wall, in particular within the vacuum cleaner hose or pipe.
• the direction of flow is also when entering the vacuum cleaner housing and the connecting piece parallel to the wall of both the connection piece 24 and the connecting piece 25, as shown schematically by the arrow 17, even if locally turbulence may occur at individual points of the air flow
• FIGS. 6A to 6F schematically illustrate various possibilities for connecting a material layer to a vacuum cleaner filter bag.
• the top view of an inner side of the bag 5 is shown. It is the side of a rectangular filter material layer facing the inside of the bag for a flat bag, this filter material layer being finished prefabricated vacuum cleaner filter bag opposite the inlet opening of the bag
• This Filtermate ⁇ allage is with the opposite Filtermate ⁇ allage in which the inlet opening, along the side edges welded, for example, so that at each edge a seam 7 is formed
• a material layer 4 in the form of a rectangular strip is arranged centrally on the inside of the bag 5.
• the material layer has a surface area of approximately one third of the area of the associated filter material (bag wall) and thus a surface of approximately one sixth of the inside of the entire vacuum cleaner filter bag
• the material layer is connected only to two seams of the filter bag, in the view shown above and below, with the vacuum cleaner filter bag. This can be achieved, for example, by placing the material layer 4 between the two filter material layers in the manufacture of the vacuum cleaner filter bag and welding the two Filter material layers along the side edges is also welded to these The material layer is thus connected in this way via two continuous weld with the vacuum cleaner filter bag
• the other two side edges are unconnected to the filter material layer, so that an air stream entering the vacuum cleaner filter bag is disposed between the material layer 4 and the inlet opening. Overlying bag inside 5 of the filter material layer can flow. In this way, the material layer is raised during operation of the vacuum cleaner or removed from the filter material layer and set in motion. The air flow can flow from below through the material layer in the direction of the interior of the vacuum cleaner feces. It has surprisingly been found that this leads to a significantly better service life and dust storage capacity of the bag over a longer period of time, as will be explained in more detail below with reference to FIGS 8 to 13.
• the surface of the material layer on the side facing the filter material layer connected therewith has an unconnected part, which is shown by dashed lines.
• This part encloses the left and right side edges of the material layer down to their corners and forms a convex set in the form of a rectangle.
• This convex amount makes up almost the entire area (except for the weld at the top and bottom edges) of the surface of the material layer.
• the material layer 4 is connected to the inner side 5 of the bag at only two points 26. These points may be, for example, Sch performancepu ⁇ kte or adhesive dots.
• the material strip is also arranged centrally, but does not extend in the longitudinal direction up to the hems 7 of the vacuum cleaner filter bag.
• a convex amount which is formed by an unconnected part of the surface of the material layer and lies between the two connection points, is also drawn in a dashed line.
• the unbonded part includes both the perpendicular projection of the center (geometric center of gravity) of the material layer on its surface facing away from the inlet opening and a path leading through this projection point, which extends from the left to the right edge of the material layer , In this way, an air flow can flow under the material layer.
• the strip of material 4 in Figure 6C has rounded corners and is connected at four points 26 with the bag inner side 5 of the vacuum cleaner filter bag.
• the material layer 4 is given in the form of a rectangular strip.
• This strip of material is connected via a single weld 27 with the inside 5 of the vacuum cleaner filter bag.
• This weld 27 runs parallel to the left and right Side edge and through the center of the Mate ⁇ allage
• Two convex sets, which are each formed by an unconnected part are indicated st ⁇ chliert
• the material strip 4 is connected to the vacuum cleaner filter bag at two seams, as shown in FIG. 6A.
• An additional weld seam 27 is provided on the right side edge of the material layer 4.
• FIG. 6F shows a circular Mate ⁇ allage, which is arranged centrally on the Filtermate ⁇ allage the Staubaugerfilter milks
• This Mate ⁇ allage is at a single point 26, which is arranged in the middle of the material layer 4, connected to the bag inner side
• two unconnected parts each form a convex amount in shape a circle segment
• the material layer 4 completely covers the filter material layer opposite the inlet opening and is connected to the seams 7.
• the material layer has three slots 28 through which an air stream can flow under the material layer.
• a convex surface is located between two slots st ⁇ chliert indicated
• the material layer again has a smaller area than the area of the bag wall connected therewith to the hems.
• four slots 28 are provided perpendicular to the open side edges of the material layer in order to further promote an underflow of the material layer
• the material layer can also be otherwise connected, for example via a plurality of spot welds, to the filter material layer on the side of the bag mens
• two or more layers of material for example two rectangular strips arranged one above the other, which are connected to the vacuum cleaner filter bag at the seam as in FIG. 6A
• the material layer shown in FIGS. 6A to 6H can be made up of individual ones substantially (except via connections with the vacuum cleaner filter bag). consist of other unbonded fibers. These can be z. B. parallel or perpendicular to the longitudinal direction of the strip shown in Figures 6a to 6e and be connected at each end of the fibers in the fiber longitudinal direction with the bag inner side 5.
• the fibers may be connected to each other and to the inner side 5 of the bag by a weld or glued seam along or obliquely to the width of the strip shown in FIGS. 6a to 6e. That is, in an example where the strip shown is made up of fibers arranged parallel to the strip direction, the fibers may be attached to the bag inner side 5 after parallel alignment by welding or gluing perpendicular to the fiber longitudinal direction. All the fibers can be fastened to the upper seam 7 of the vacuum cleaner filter bag shown in FIG. 6a at the same time in one working operation and fastened to the lower seam 7 simultaneously in another working process. Except for these attachments to the hems, the fibers are not interconnected.
• FIG. 7 shows the top view of the inside 5 of a vacuum cleaner filter bag with a material layer 4 arranged thereon.
• the contours of a collapsible deflecting device 2 are projected onto the surface of the material layer and the filter material layer.
• the deflection device comprises two outlet openings, each occupy an entire side surface of the cuboid shape, as soon as the vacuum cleaner filter bag is in operation.
• the outflow directions are indicated by two arrows.
• the deflection device shown thus corresponds to the embodiment shown in Figure 2.
• each fold line 10 includes an angle a with a rim (or edge) perpendicular to the sheet of material enclosed in the unillustrated part and thus not connected to the inside of the bag.
• FIGS. 8 to 10 illustrate the surprising improvement of conventional vacuum cleaner filter bags through the use of a deflector and a sheet of material as described above. In particular, dust load tests were performed on various vacuum cleaner flutes in which defined amounts of dust were drawn into the dust filter bag and the remaining volumetric flow was measured
• the vacuum cleaner used was a Miele S 5220, whose performance was set to maximum.
• the size of the flat pouches was 317 x 330 mm.
• the material layer in the form of a rectangular strip connected to the rear side of the filter material layer of a filter bag had a width of 130 mm the shape of a cuboid as shown in Figure 3 and was analogous to Figure 2 connected to the Filterma- te ⁇ al the vacuum cleaner filter bag
• the material of the deflector was cardboard, the dimensions amounted to 80 mm x 80 mm x 30 mm (long x width x height)
• vacuum cleaner filter bag to be tested was installed in the apparatus after the vacuum cleaner had been warmed up for 10 minutes.
• the volume flow without dust loading was read after 1 minute of running time.
• the first 50 g portion of dust was sucked in within 30 seconds the adjusting volumetric flow rate (in m 3 / h) read this step was repeated for the following dust additions until 400 g of dust had been added
• vacuum cleaner filter bags were compared to neither a deflection device nor a material layer which has a deflection device or a material layer, as well as a deflection device and a material layer.
• volumetric flow readings (in l / s) are plotted against the amount of dust sucked in. Furthermore, below each graph is a table with the exact values of the respective measurement results for Og, 50g, 100g, ..., 400g amount of dust.
• the filter media used were purchased from Airflo Europe N.V., Overpelt, Belgium.
• the terms in the graphics have the following meaning.
• the first abbreviation designates the filter material of the vacuum cleaner filter bag, ie the filter material layers from which the flat bag was made.
• SMS refers to a composite nonwoven fabric (composite) in the air flow direction, ie from the inside of the bag to the outside - a spunbond (17 g / m 2 basis weight), a fine fiber fleece (meltblown) (24 g / m 2 ) and a spunbonded nonwoven ( 25 g / m 2 ).
• 75CS is a composite nonwoven fabric comprising - in the air flow direction - a spunbonded nonwoven (17 g / m 2 ), a drained nonwoven fabric of electrostatically charged split fibers (75 g / m 2 ), a fine fiber nonwoven fabric (24 g / m 2 ) 2 ) and a spunbonded fabric (25 g / m 2 ).
• 130CS refers to a nonwoven composite nonwoven fabric (17 g / m 2) ), a drained fleece of electrostatically charged split fibers (130 g / m 2 ), a fine fiber fleece (24 g / m 2 ) and a spunbond (25 g / m 2 ).
• 60SB is a spunbond having a weight per unit area of 60 g / m 2.
• the material layer at the filter bag seams is connected to the inside ( Figure 6A), and for the indication "2 points” there is a connection according to Figure 6B.
• a filter bag of SMS material (as described above) comprising a deflector, whose fold lines are aligned perpendicular to the unconnected side edge of the material layer, and a material layer of 130CS material examined.
• FIG. 10 shows the influence of the arrangement of the deflection device with respect to the loose material strip.
• the specified angle corresponds to the angle a in FIG. 7.

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

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• 2006
  • 2006-11-22 ES ES06818737T patent/ES2306436T5/es active Active
  • 2006-11-22 WO PCT/EP2006/011191 patent/WO2007059939A1/fr not_active Ceased
  • 2006-11-22 DE DE202006020047U patent/DE202006020047U1/de not_active Expired - Lifetime
  • 2006-11-22 EP EP06818737A patent/EP1804635B2/fr active Active
  • 2006-11-22 AT AT06818737T patent/ATE395858T1/de not_active IP Right Cessation
  • 2006-11-22 DE DE502006000799T patent/DE502006000799D1/de active Active
  • 2006-11-22 PL PL06818737T patent/PL1804635T5/pl unknown

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