EP0893963A1

EP0893963A1 - Odour and/or particle filter

Info

Publication number: EP0893963A1
Application number: EP97906810A
Authority: EP
Inventors: Jan Thomas Krapp
Original assignee: Vorwerk and Co Interholding GmbH
Current assignee: Vorwerk and Co Interholding GmbH
Priority date: 1996-04-01
Filing date: 1997-03-01
Publication date: 1999-02-03
Anticipated expiration: 2017-03-01
Also published as: ES2174222T3; EP0893963B1; ATE217774T1; WO1997036534A1

Abstract

The invention relates primarily to a vacuum cleaner with an aspirator in a vacuum cleaner housing and an odour and/or particle filter (4) placed in front of the aspirator, said aspirator having a substantially rectangular cavity (6) for the filter (4). The invention secondarily relates to an odour and/or particle filter for a vacuum cleaner in question. In order to achieve a suction flow with minimum filter bypassing when correctly using a suction cross section with regard to a filter to be inserted, even if the aspirating hole is arranged offset to the centre of the cavity, it is proposed that an aspirating hole (10) in the cavity (6) is arranged offset to the plan in the direction of a longitudinal edge (B) and a corner of the rectangle, that the longitudinal edge (B) has a slightly concave profile, that the filter (4) is designed to be flexible like a cushion and, particularly as regards the concave edge (B), to have a slight oversize, preferably for its geometrical adaptation to the profile of the edge (B), and also that the filter (4) has, in an overall substantially rectangular plan, one of the long sides (B') and/or one of the narrow sides (C') which is (are) concave.

Description

00001 Odor and / or particle filter

00002

The invention relates to a vacuum cleaner with a

00004 a vacuum cleaner housing arranged suction fan and

00005 an odor arranged in front of the suction fan

00006 and / or particle filter, one in the suction fan

00007 essentially rectangular receptacle for the filter

00008 is formed.

00009

In vacuum cleaners, it is known to use them for absorption

00011 treatment of fine dust and odors with smell

To provide 00012 and / or particle filters. Olfactory and

Particle filters can be present as individual elements. It

However, training is also known in which the

00015 filters are surrounded together by an overall covering

00016 to form a filter pack. Further it is

00017 knows such a package or individual filter layers

00018 in the direction of flow between a dust filter bag

To arrange 00019 and the suction fan.

00020

With regard to the above-described prior art

00022 becomes a technical problem of the invention therein

Seen 00023, with good use of a suction cross-section

00024 a possible with regard to a filter to be inserted

To achieve as short as possible short-circuit-free suction flow, too

00026 with an arrangement of the sucking opening off-center

00027 a center of gravity of the recording.

00028

00029 This problem is first and foremost

Subject matter of claim 1 solved, being abge¬

Is that a suction port in the recording in

00032 Relative to the floor plan towards one

00033 longitudinal edge and a corner of the rectangle arranged

00034 is that the longitudinal edge has a slightly concave ver

00035 barrel has that the filter cushion-like flexible 00036 is formed and in particular with regard to the concave

00037 ve edge with a slight oversize, preferably in

00038 geometric adaptation to the course of the edge,

00039 is formed. Only then can a filter be effective

00040 when the loaded with the goods to be separated

00041 air actually through the filter and not on

00042 this flows through so-called leaks. The

00043 filter must therefore lie sealingly in the receptacle.

Known filters either have an inadequate one

00045 sealing effect or lose through another, sealing

00046 tendes housing part of their freely flowable

00047 inflow surface. Due to the inventive

00048 configuration is also with an arrangement of the suction opening

00049 eccentric to the area center of gravity of the recording

00050 reached a short-circuit-free suction flow. Through the

00051 displacement of the suction opening in the recording in the direction

00052 on a longitudinal edge, for example due to

00053 structural specifications, is due to the slightly concave

00054 course of this longitudinal marginal edge against one in

00055 plan rectangular recording an enlargement of the

00056 contact surface achieved in the area of this longitudinal edge,

00057 which contact surface forms a sealing surface. The kis

00058 sen-like flexible filter, which both

00059 an odor or particle filter as well as a combination

Can represent 00060 tion from both filters, has one

Contour adapted to this concave longitudinal edge.

00062 Accordingly, one of the longitudinal edge of the receptacle must be

00063 arranging edge of the filter also concave

00064 forms this with a slight overlap, so that after

00065 inserting the filter into the holder the filter

00066 edge sealing against the longitudinal edge of the receptacle

00067 is pressed. There are therefore no short circuits

00068 for the passage of unfiltered suction air. It is also

00069 conceivable, with a slightly concave course

00070 recording longitudinal edge with a with respect to the 00071 overall dimensions of the floor plan the relatively large radius

00072 corresponding longitudinal edge of the filter straight

00073 nig, d. H. not concave to train, being straight

00074 running line of the filter edge the root points

00075 cuts the concave longitudinal edge of the receptacle. Here-

00076 is the desired excess. Through the

00077 flexible design of the filter takes place in the area

00078 of the concave longitudinal edge a deformation of the filter

00079 edge, creating the desired seal in this

00080 area continues to exist. During an apprenticeship

00081 of the filter with a concave, the longitudinal

00082 edge of the recording adapted edge results

The surprising advantage that when using a

00084 combination filter (odor and particle filter), at

00085 which has a preferred flow direction

00086 ben, inserting the fil-

00087 ters is avoided by the user. The user

00088 is due to the concave design of the filter edge

00089 te given a guide. Another one

00090 arrangement of the suction opening in the receptacle with respect to

00091 the floor plan is offset towards the concave longitudinal

00092 edge and a corner of the rectangle to achieve

00093 a short-circuit-free suction flow proposed that

00094 the recording following the concave

00095 edge with respect to the corner to which the suction opening

00096 is arranged offset, in a convex rounded

00097 corner training passes, which with regard to a

00098 narrow side into another concave

00099 edge continues, with the corner formation a

00100 has a greater distance from the center of the suction opening

00101 as the concave edges and that the filter is adaptable

00102 solution to the course of the marginal edge in this area

00103 likewise from a convex corner formation into a

00104 concave edge formation merges. Is the suction opening

00105 with respect to the floor plan offset in the direction of 00106 a corner area, there is a risk of a

00107 suction flow short circuit. This is through the previous one

00108 counteracted inventive embodiment.

00109 The two concave edges of the corner area

00110 ches together with the convex shape of the

00111 corner formation an enlargement of the sealing surface, in particular

00112 especially when the filter, as preferred,

00113 the course of the two marginal edges and the corner extension

00114 education is adapted, this is further preferred with a

00115 slight oversize. When the filter is inserted in

00116 the recording will be the corresponding edge areas

00117 of the filter, due to the flexibility

00118 displaced inwards that between the filter marginal

00119 ten or the filter corner design and the receiving

00120 longitudinal edge edges or its corner formation a full

00121 ch sealing is achieved. It is therefore particularly

00122 re the critical area around the suction opening in one

00123 improved shape to prevent suction flow

00124 short-circuit sealed. 00125

The invention further relates to an odor and / or

00127 Particle filter for a vacuum cleaner, in particular for

00128 a vacuum cleaner of the type described above. Here

00129 is used to achieve a short-circuit-free as possible

00130 suction flow with an arrangement of the suction opening

00131 in the middle of a center of gravity of the recording

00132 suggest that the filter at essentially essentially

00133 rectangular plan on one of the long sides and / or

00134 one of the narrow sides of a kr rücav running shape

00135 device. This makes - ~ n compared to one

00136 in the plan strictly rectangular filter

00137 side faces, which seal when installed

00138 longitudinal edge edges of a receptacle, enlarged,

00139 which provides an improved seal. The

00140 concave design can be on one long side 00141 of the filter can be provided. Furthermore, a narrow

00142 side of the filter with a concave course

00143. An embodiment, however, is preferred

00144 of both a long side and a narrow side

00145 run concave, at least in the area of through

00146 these two sides formed corner area. Will that

00147 filter designed as a combination filter, in which

00148 the filter has both an odor and a particle

00149 filtration takes over, and with this filter combination

00150 nation a flow direction of the suction flow

00151 ben, results from the inventive geometric

00152 see design of the filter in a geometric

00153 adaptation to the course of the longitudinal edge edges of the receptacle

00154 me a guide function. The user becomes visual

00155 given a help, the filter layer or flow

00156 correctly. It is also proposed that

00157 a corner area of the filter with a convex curvature overall

00158 ter design excellent with respect to a second narrow

00159 side corner area is formed.

00160 This convexly curved corner area is preferably between

00161 see the two concave longitudinal or narrow

00162 pages arranged, making a peninsula-like

00163 configuration of the corner area results. This protrudes

00164 compared to the other corner

00165 is prominent in the floor plan. The convex so formed

00166 corner area supports the previously mentioned orientation

00167 aid. This configuration makes it work

00168 corner area like a protruding from the floor plan

00169 tion nose, which automatically by the user

00170 a correspondingly shaped corner area of the recording

00171 is assigned. For improved removal of the filter

00172 from the holder, e.g. to replace the filter,

00173 it is proposed that the filter handle a handling

00174 see has. This is preferably arranged so that

00175 this in the inserted state of the filter in the holder 00176 me is easily accessible. It is proposed that

00177 that the handling tab cantilevered on a corner

00178 richly arranged of the filter, this is preferably

00179 facing the concave narrow side

00180 and the convex corner area

00181 corner. To ensure that the film is removed safely

To ensure 00182 ters, it is provided that the hand

00183 exercise tab in length about a height of the filter

00184 corresponds. It may be a floor plan

00185 act almost triangular shaped tab, which

00186 triangular shape preferably a right triangle

00187 is modeled. The corner area in which the

00188 handling tab is cantilevered, has

00189 prefers a contour which allows the

00190 Handling strap around the edge of the corner area

00191 folded and placed on the surface of the filter

00192 can be. The filter can also be designed in this way

00193 be that this in terms of odor filtering

00194 has an odor filter layer. Odorants

00195 are known in a known manner by attachment to solid

00196 deposited per surface. An effective odor filter

00197 ter therefore preferably has the largest possible inner

00198 surface on. For this purpose,

00199 sorbing substances highly porous materials, such as

00200 zeolite or activated carbon. The inner upper

00201 area of these materials is through pores and channels

00202 connected to the filter outer space. In the direction

00203 smaller diameter one speaks of macro,

00204 meso and micro pores, the latter for the separation

00205 fertilizer are most important. The larger pores, however

00206 serve more to transport the substances to be separated

00207 inside the filter. For the transportation of air

00208 even larger channels are required within the filter

00209 as it moves from the macropores of the porous material

00210 can be provided. This task is known in 00211 solved by individual body of the porous

00212 materials are fixed in the room by a scaffold,

00213 which by a simple pouring, but also by

00214 sticking together or other type of fixation such. B.

00215 sintering, or also by application to a spatial

00216 structure (open-cell foam, pleated fleece,

00217 spatially textured fleece or other type of spatial structure

00218 doors) can be provided. According to the invention

00219 preferred an embodiment in which the olfactory

00220 filter layer made of a foam frame with embedded

00221 activated carbon exists. It is further preferred in

00222 to store active foam in the foam structure.

00223 As an alternative to the foam structure,

00224 speed, the carrier material from a fiber material

00225 digits. It proves to filter fine dust

00226 as advantageous that the filter with regard to a

00227 particle filtering has a particle filter layer.

00228 An embodiment is preferred in which

00229 the particle filter layer consists of a fleece.

00230 Alternatively, the particle filter layer can also be made of

00231 consist of a glass paper filter fabric. To the olfactory

00232 filter layer, for example, to protect against fine dust

00233 proposed that the particle filter layer in continuous

00234 flow direction arranged in front of the odor filter layer

00235 is. An upstream particle filter protects

00236 after, for example, the activated carbon or another alternative

00237 used adsorbent before fine dust. That dust

00238 could, if it is not in the upstream particle filter

00239 would be intercepted, depending on the size, the macropores that

00240 mesopores or the micropores of the adsorbent blocked

00241 fen and so the adsorption performance of the odor filter

00242 reduce. In particular, relatively coarse fine

00243 dust with a diameter of 10 to 100 μm critical,

00244 since this can clog the macro or mesopores.

00245 This would inevitably mean access to all 00246 subsequent pores, in particular the micropores,

00247 blocks and most of the effective

00248 outgoing area inactivated. This effect is

00249 according to the invention in the flow direction

00250 odor filter upstream particle filter

00251 works. Furthermore, the arrangement can be made

00252 that the odor filter layer in the flow direction

00253 the particle filter layer is arranged. A follow-up

00254 switched particle filter protects this module

00255, in turn, downstream assemblies, such as blowers,

00256 engine, muffler or exhaust filter, not just in front

00257 parts of the still through the dust filter bag

00258 fine dust, but also before any coal

00259 dust caused by vibration and wear within the

00260 odor filter can be released, in particular

00261 fragments of coal and those when breaking

00262 of these fragments released fine dust. Another

00263 re, essential task of such a particle filter

00264 lies in the loss of porous material and thus

00265 prevent loss of effective filter performance

00266 the. Another possibility to confound the two

00267 filter layers consists in that the particle filter

00268 layer arranged between two odor filter layers

00269 is. An arrangement is preferred in which the

00270 odor filter layer between two particle filter layer

00271 ten is arranged. Here is a - in flow

00272 viewed in the direction - the first particle filter layer

00273 Odor filter layer before through the dust filter bag

00274 protected from fine dust passing through. The follow-up

00275 switched .wide particle filter layer protects the

00276 downstream assemblies of the vacuum cleaner, so that

00277 this is not the one released in the odor filter

00278 dust, especially coal dust, what

00279 may reduce a tool life

00280 blow-out filter would result. Regardless of the 00281 previously mentioned possible combinations

00282 further proposed that the filter of a skin

00283 gene foam is surrounded. This to form a

00284 compact, coherent filter package. The skin

00285 term foam is permeable to air and spans the

00286 one or more filter layers entirely. Here will

00287 preferred a training in which the foam

00288 consists of two layers welded together

00289 a weld seam arranged eccentrically in height.

00290 This runs around the entire circumference of the filter

00291 weld seam is preferably the height of the

00292 exposed surface of the filter pack

00293 turns. This results in an over the entire

00294 circumference of the filter package extending collar,

00295 which in the installed state, for example of

00296 term fixing webs can be overlapped. By

00297 the welding is from the air-permeable

00298 material (filter foam) an airtight sealing

00299 lip formed by the spring force of the compression

00300 filter system on the wall of the filter holder

00301 me is pressed. This ensures that

00302 no air can flow past the filter and thus

00303 is not cleaned. This feature also

00304 from the consequence that due to the space-saving construction

00305 tion of the seal more space for adsorptive material

00306 is available. This is a clear one

00307 Increase in filter performance and thus an increase

00308 given the service life of the filter. Further is guaranteed

00309 ensures that any leakage air that reaches the level

00310 of the sealing lip flows past the filter on the side,

00311 through the major part of the height of the fil-

00312 ters must flow through this. Next can

00313 can be seen that the skin-like foam

00314 an ester-based polyurethane foam with a pore

00315 number from 50 to 150 PPI, typically 90 PPI, exists at 00316 a thickness of 0.5 to 3 mm, preferably 1.5 mm. For this purpose 00317 is proposed in an alternative embodiment, 00318 that the decisive filter stages (pore protection filter, 00319 odor filter and possibly retention filter) are welded into the filter 00320. Furthermore, it is conceivable that the enveloping filter foam supports the function of the pore protection filter on the upstream side and the function of the retention filter for adsorptive material 00324 on the downstream side or even fulfills it on its own. Finally 00325 it proves to be advantageous that the handling plate 00326 is arranged in the area of the weld seam. In a preferred embodiment, the 00327 handling tab is formed from the two layers 00329 welded to one another, with which the handling tab forms an enlargement 00330 of the collar already formed by the weld seam in a corner region of the filter. 00332 Thus, the removal aid is arranged on the side of the filter, so that it does not reduce the free flow area. At the same time, it is very flexible, so that it cannot lead to wedging of the vacuum cleaner parts located next to the filter. Another advantage of 00337 is that equipping the filter with a handle of this type 00338 is almost cost-neutral 00339. 00340 00341 The invention is explained below with reference to the drawings, 00342, which only shows exemplary embodiments. 00344 00345 FIG. 1 shows a hand-held vacuum cleaner in a perspective view with a position of a filter and a 00348 suction fan shown in hidden line style 00347; 00349 00350 Fig. 2 is a plan view of the filter after insertion

00351 in a receptacle of the suction fan,

00352

00353 Figure 3 shows the section along the line III-III in Fig. 2.

00354

00355 Fig. 4 is a plan view of the filter in a single

00356 illustration;

00357

5 shows a side view of the filter according to FIG. 4;

00359

00360 Fig. 6 is an enlarged sectional view through the

00361 filter according to line VT-VI in Fig. 5;

00362

00363 FIG. 7 shows an enlarged detail from FIG. 3;

00364

00365 FIG. 8 shows a sectional representation corresponding to FIG. 6

00366 treatment, however, a second embodiment

Meeting 00367;

00368

00369 FIG. 9 shows a further representation corresponding to FIG. 6

00370 lung, regarding a third embodiment;

00371

00372 FIG. 10 shows another sectional view corresponding to FIG.

00373 illustration, a fourth embodiment

00374 meeting;

00375

00376 FIG. 11 shows another sectional view corresponding to FIG.

00377 illustration, a fifth embodiment

00378 meeting.

00379

00380 Shown and described is initially with reference to

00381 Fig. 1 a handheld vacuum cleaner 1 with one in a dust

00382 suction housing 2 arranged suction fan 3 and one in

00383 flow direction r arranged in front of the suction fan 3

00384 Filter 4, which is designed as an odor and particle filter 00385 forms. In addition, in the flow direction r this 00386 filter 4 is a dust filter bag, not shown, which is held in a filter bag cassette 5 and is not shown. 00389 00390 An essentially rectangular receptacle 6 for the filter 4 is formed in the suction fan 3. In this 00392 receptacle 6 the filter 4 is in the operating state. 00393 For the removal of the filter 4, the receptacle 6 is exposed 00394 bar by the dust bag cassette 5 being pivoted away from the suction housing 00395 se 2. Thereafter, the view of 00396 is clear, the filter lying in the receptacle 6 according to the detail illustration shown in 00397 FIG. 00398 00399 The receptacle 6 is essentially bowl-shaped with a base 7 and a circumferential wall 8 oriented perpendicularly to this 00401. On the base 7 00402, webs 9 are formed to support the 00403 filter 4 to be inserted, as a result of which a spacing between the bottom 00404 of the filter 4 and the bottom 7 is given. 00405 00406 Furthermore, a suction opening 10 is provided in the bottom 7 for connection to the suction blower 3, which suction opening 1040 is of circular design in plan view. In the exemplary embodiment shown 00409, the suction opening 10 00410 has a diameter of approximately 18 mm. 00411 00412 The arrangement of the suction opening 10 in the floor 7 00413 is selected such that the center point M is spaced from 00414 a center of area FS of the receptacle 6, namely 00415 such that the suction opening 10 is offset approximately from a corner formation 00416 A of the receiving floor plan. 00417 In the embodiment shown, this is so selected 00418 that the center M is approximately in the middle of a 00419 imaginary connecting line between the heavy area

00420 point FS and the corner formation A is positioned.

00421

00422 This offset of the suction opening 10 is a longitudinal

00423 edge B, a narrow edge C and the corner Ausbil¬

00424 dung A assigned to the area of the suction opening 10, with what

00425 these areas are of particular importance. Around

00426 in this area a short-circuit-free suction flow

To achieve 00427 inserted filter 4, the two

00428 edge edges B and C and also the corner formation A see above

00429 be designed that a sufficiently high seal

00430 between the filter 4 and the wall 8 of the receptacle 6

00431 is achieved.

00432

00433 For this purpose, the longitudinal edge B has a slightly concave

00434 course, the vertex of the so formed

00435 Krüπroungslinie close to the edge of the suction opening 10th

00436 is arranged. The on this longitudinal edge B

00437 subsequent corner formation A, however, is convex

00438 det, from where the wall 8 is also in one

00439 continues concave narrow edge C. The

00440 arrangement is made so that the transition

00441 rich from the corner formation A to the narrow edge C

00442 is approximately at the level of the suction opening center M.

00443

00444 It can also be seen that the corner formation A a

00445 larger distance to the suction opening center M on

00446 points as the concave edges B and C. In the ge

00447 showed embodiment is the corner training A with

00448 a dimension a of about 50 mm from the center M,

00449 where the longitudinal edge B a distance b of about 20mm

00450 and the narrow edge C a distance c of about 45mm

00451 to the center M.

00452 00453 The stringing together of longitudinal edge B, corner formation A and narrow edge C runs with reference to 00455 a plan view of the receptacle 6 according to FIG. 2 in the counterclockwise direction. 00457 00458 At the narrow edge C there is another 00459 diagonally inward over an angle of approx. 45 ° 00460 the corner area D, which connects the connection between 00461 the narrow edge C and a second longitudinal edge E opposite the longitudinal edge 00462 edge B. forms. The 00463 contour of the receiving wall 8 is closed by 00464 a uniformly rounded corner area F, a straight narrow edge 00465 adjoining it 00466 edge G and a edge connecting this edge and the concave 00467 de longitudinal edge B, obliquely over a 00468 angle of approx. 15 ° edge H. 00469 00470 The various dimensions, in particular the radii of the 00471 concave edge edges are described with the help of the filter layout 00472, which filter 4 is geometrically 00473 in the layout of the edge edges or the wall 8, 00474 det, however with a slight oversize of 00475 all around 1 to 2mm. 00476 00477 The filter 4, as already mentioned, is designed as an odor and 00478 particle filter. 4-6 show a 00479 first embodiment of the filter 4. 00480 00481 As can be seen in particular from the sectional illustration in FIG. 6 00482, a layered arrangement of various filter layers 00483 is provided. To absorb odors, an odor filter layer 11 is provided, which is arranged in the flow direction r between two particle filter layers 12 and 12 '. The odor filter layer 11 preferably consists of a foam material 00488 equipped with activated carbon. In addition 00489 active crushed coal is preferably used here. 00490 00491 For filtering very fine dust, which can still escape from the dust bag, the particle filter layer 12, which forms a pore protection filter, is made of a 00494 nonwoven fabric. However, a glass filter paper fabric can also be used. 00496 00497 A three-layer filter 4 is thus created, 00498 which consists of a skin-like foam 13, preferably 00499, polyurethane foam based on esters with approx. 60 to 00500 100 pores per inch, typically 80 pores per inch, for 00501 to form a shell is surrounded. The thickness of this skin-like 00502 foam 13 is 1 to 2 mm, preferably 00503 1.5 mm. This skin-like foam 13 consists of 00504 two layers 13 ', 13''which are welded to one another and which are 00505 welded to one another along the entire circumference on the narrow sides, 00507 being welded by the weld seam 14 00507 from the air-permeable material to an air-impermeable material is formed. The weld seam 14 therefore has the function of a sealing lip 16 00509. 00510 00511 The height of the weld seam 14 formed in this way, based on 00512 based on the thickness of the filter 4, is 00513, namely in such a way that the weld seam was more in the position of 00514 The filter 4 faces the upper, ie exposed top side of the filter 4 according to FIG. 3. 00516 00517 The upstream particle filter layer 12 00518 protects the odor filter layer 11 or another alternatively used adsorbent 00519 from fine dust. This 00520 fine dust, if it were not caught in the upstream 00521 particle filter layer 12, could, depending on the size of the 00522, the macropores, the mesopores or the micropores Block 00523 of the adsorbent and reduce the adsorption capacity 00524 of the odor filter. The downstream 00525 particle filter layer 12 'in turn protects the downstream components of the vacuum cleaner 1, such as 00527, the suction fan 3, the motor, etc., not only from 00528 parts of the fine dust that still passes through the dust filter bag, but also from any coal 00530 dust that can be released by vibration and wear within the 00531 odor filter. This measure also prevents 00532 from the loss of released, 00533 porous material and thus the loss of effective 00534 filter performance. In this respect, the embodiment shown in particular in FIG. 6 is the preferred embodiment in FIG. 6. 00537 00538 The outer 00539 contour of the filter 4 is described in more detail below with reference to FIGS. 4 and 5. 00540 00541 The filter 4 has an essentially rectangular 00542 layout with a length x of approx. 150 mm, a 00543 width y of approx. 75 mm and a thickness z of approx. 20 mm. 00544 00545 Corresponding to the holder 6 described above, the 00546 outline contour of the filter 4 is correspondingly modified from a 00547 rectangular shape. 00548 00549 The filter 4 is designed to be cushion-like compressible 00550 and has a concave configuration on a longitudinal side B '00551 de design. In the exemplary embodiment shown, the radius e of the circular 00552 section-shaped line thus formed is approximately 300 mm. 00554 00555 FIG. 4 shows a rectangle representing the basic outline 00557 to explain the contour in 00556 dash-dotted line type. The concave 00558 design of the long side B ¹ is chosen so that the 00559 this circular section line intersects the long side of the 00560 auxiliary rectangle so that there is a distance i 00561 between the intersection points of about 90mm. This results in a depression g of the long side B 'caused by the concave configuration 00563 of approximately 00564 3 mm from the original long side of the rectangle. The arrangement of the concave long side B 'has also been such that it is not assigned to a convex 00568 curved corner area A' rather than in the center of the entire length 00567 of the filter 4. 00569 00570 This convexly curved corner region A ¹ directly adjoins 00571 on the concavely curved longitudinal side B ', 00572 in the exemplary embodiment shown with a 00573 radius d of approximately 12 mm. 00574 00575 This convexly curved corner region A 'runs out into a 00576 narrow side of the auxiliary rectangle, from which a further concavely curved region of a 00578 narrow side C extends directly. 00579 00580 The radius f describing this line of curvature is dimensioned in 00581 the exemplary embodiment shown with approx. 50mm, 00582 sen, the curvature line being further arranged in such a way 00583 that it has a clear width j of approx. 30mm. 00584 start and end point of this narrow side C, refer to 00585 to the longitudinal extent of the filter 4, not to 00586 on one plane, but are offset by a dimension h of approx. 5 mm 00587 such that the corner area A ¹ End point 00588 facing away from the inside, ie in the direction of 00589 a center of the area of the filter 4 is offset. 00590 00591 The configurations and dimensions 00592 of the long side B ¹ and the narrow side C described above result in 00593 a protruding, nose-like design of the corner area

00594 ches A '. This nose-like corner area A 'gives that

00595 users a good visual orientation to the correct

00596 insert filter 4 into holder 6. Next

00597 are characterized by the concave or by the convex configuration.

00598 the areas the side faces opposite the straight

00599 a few, right-angled course over the same

00600 stretch increases, which leads to an improved sealing

00601 device with filter 4 inserted in the receptacle 6

00602 leads these areas. As already mentioned, that is

00603 filter 4 with reference to the receptacle 6 with a light

00604 oversize approx. L-2mm, so that - conditionally

00605 due to the pillow-like flexibility - the side surfaces

00606 sealing against the longitudinal and narrow edges of the

00607 nestle me 6. 00608

00609 Following the end point of the concave curve

00610 narrow side C is another sloping inward

00611 corner area D 'running at an angle of approximately 45 °

00612 arranged. This merges into a straightforward

00613 fende, the long side opposite B ¹ long side

00614 E '. The contour of the filter floor plan is closed

00615 from another, a radius k of approx. 25 mm

00616 send corner area F ', a straight

00617 linear narrow side G 'and one between

00618 this narrow side G ¹ and the corner area A '

00619 turned end of the concave long side B ¹ extending,

00620 at an angle alpha of approx. 15 °

00621 H '. The transition from narrow side G 'to side H' is

00622 rounded, with a radius 1 of about 20mm. 00623

00624 In the free from the inclined corner area D '

00625 cut area is a flexible handling tab

00626 15 provided, which is a rectangular in plan

00627 triangle is approximately formed. This handling position 00628 see 15 is arranged in height in the area of the weld seam 14 00629 and is formed by the two miteinan 00630 of the welded layers 13 'and 13' * of the skin-like 00631 foam 13. Thus, the cathets of the 00632 handling tab 15 result from an extension of the 00633 Welding seams on the long side E 'and the narrow side C. 00634 The hypotenuse, which forms a kink line for the handling strap 15, is described by the corner region D '00636. 00637 00638 The cantilevered handling tab 15 corresponds in 00639 its length m approximately to the height z of the entire filter 4. 00640 00641 The configuration described above and the dimensions chosen 00642 result in a floor plan area of 00643 approx. 100 cm ² and a volume of approximately 230 cm ³ with a 00644 circumference of approx. 40cm. 00645 00646 The installation state is shown in FIGS. 2 and 3, 00647 wherein the filter 4 is supported on the underside on the bottom-side webs 9 of the receptacle 6. Along its 00649 side edges, the filter 4, due to 00650, clings to the above-mentioned oversize in a sealing manner on the edge edges 00651 of the receptacle 6, this seal being supported by the sealing lip 16 00653 formed from the weld seam 14, as mentioned above. The handling flap 15 is bent upwards according to 00654, ie in the direction of the removal opening 00655, for secure gripping thereof. Hier¬ 00656 due to an easy removal of the filter 4 00657 from the receptacle 6 is guaranteed. 00658 00659 Furthermore, due to the shape of the filter 4 and receptacle 6 having the same shape, a sufficiently high 00662 seal has been created, particularly in the 00661 areas A to C and A 'to C, so that especially in the area of 00663 suction opening 10 no short circuit 00664 in terms of suction flow arises. 00665 00666 As shown in FIG. 7 in an enlarged detail 00667, the formation of the weld seam 14 00668 as a sealing lip 16 has a positive effect to the extent that any areas that are not 00670 completely sealed by the compressible filter 4 on the outside wall 00670 through this sealing lip 00671 pe 16 can be closed. So-called leakage air (symbolized in 00672 in FIG. 7 by arrow 17) cannot therefore 00673 flow past filter 4, but is deflected into 00675 filter 4 in the 00674 area of air-impermeable sealing lip 16. The 00676 arrangement of the sealing lip 16 or weld seam 14 offset in terms of height 00676 off-center in the direction of the suction side, 00678 this leakage air 17 must still flow through the major part of the 00679 height of the filter 4. 00680 00681 FIGS. 8-11 show alternative configurations of the 00682 multilayer structure of the filter 4. 00683 00684 In FIG. 8, a particle filter layer 12 is arranged between 00685 two odor filter layers 11. 00686 00687 In FIG. 9, in the direction of flow r the odor filter layer 00688 only one particle layer 12 serving as a pore protection filter is upstream. Filters 4 such as those shown in 00690 FIGS. 8 and 9 can be used, for example, in vacuum cleaners which have an additional particle filter layer connected downstream in 00692 flow direction r for the absorption of, for example, coal dust escaping from 00694 the odor filter layer point. 00696 00697 FIG. 10 shows an alternative embodiment in which only a 00699 odor filter layer 11 is upstream of a particle filter layer 12 '. This configuration of the filter 4 is used, for example, in the case of vacuum cleaners 00701 which have an additional particle filter 00703 layer connected upstream of the filter 4 in the flow direction 00702 r, for the absorption of fine dust which is still emerging from the 00704 dust filter bag and which 00705 Odor filter could clog. 00706 00707 In the two alternative embodiments according to 00708, FIGS. 9 and 10, the described layout of the filter 4 proves to be further advantageous as 00710 in that, due to the fact that the filters 4 are used in the correct position in terms of flow must have the concave 00712 ven and convex areas a briefing function. The user is immediately conveyed in 00714 the position in which the filter 4 must be used. In this way, 00715 counteracts swapping the top and bottom of the filter 00716 4. 00717 00718 Finally, FIG. 11 shows a further alternative 00719 embodiment in which the foam layer 13 '00720 on the inflow side fulfills the function of a pore protection filter 12 00721 and on the outflow side the foam layer 13''fulfills the function 00722 of a retention filter 12' for adsorptive material 00723 alone. This can be achieved by corresponding 00724 typing of the envelope-like foam 00725 bar. 00726 00727 All disclosed features are essential to the invention. In 00728 the disclosure of the application, the 00729 disclosure content of the associated / attached priority documents 00731 (copy of the prior application) is hereby fully included, also for the purpose of features of these 00732 documents in claims of the present application with

00733 to record. 00734

Claims

00735 CLAIMS 00736 00737 1. Vacuum cleaner (1) with a suction fan (3) arranged in a vacuum cleaner housing (00738 se (2)) and an odor and / or particle 00740 filter (4) arranged in front of the 00739 suction fan (3), whereby A substantially rectangular receptacle (6) for the filter (4) 00742 is formed in the suction blower (3), characterized in that a suction 00743 opening (10) in the receptacle (6) with respect to the bottom 00744 is offset in the direction of a longitudinal edge (B) 00745 and a corner of the rectangle is arranged in such a way that the 00746 longitudinal edge (B) has a slightly concave course. 00747 that the filter (4) is designed to be flexible like a pillow and in particular in relation to the concave edge 00749 edge (B) with a slight oversize, preferably in 00750 geometrical adaptation to the shape of the edge edge 00751 (B). 00752 00753 2. Vacuum cleaner according to claim 1 or in particular da¬ 00754 according to, characterized in that the receptacle (6) in 00755 connection to the concave edge (B) 00756 visibly the corner to which the suction opening (10) 00757 is arranged offset, into a convex rounded corner 00758 formation (A), which continues with respect to a 00759 narrow side in a further concave 00760 edge (C), the corner formation (A) 00761 a greater distance (a) to the suction opening -Middle point 00762 (M) has as the concave edge edges (B, C) and that 00763 the filter (4) in adaptation to the course of the edge edge 00764 te (C) in this area also of a convex 00765 corner formation (A ') merges into a concave edge formation (C) 00766. 00767 00768 3. Odor and / or particle filter (4) for a vacuum cleaner 00769 (1), in particular for a vacuum cleaner (1) 00770 claims 1 or 2, characterized in that

00771 the filter (4) for a total of essentially rectangular

00772 according to the floor plan on one of the long sides (B ¹ ) and / or

00773 one of the narrow sides (C) a concave

00774 design. 00775

00776 4. Odor and / or particle filter according to claim 3

00777 or in particular according thereto, characterized in that

00778 a corner area (A ') of the filter (4) with a total of

00779 vex curved design excellent with respect to one

00780 second corner area (D ') allocated on the narrow side

00781 is formed. 00782

00783 5. Odor and / or particle filter after one or

00784 several of claims 3 to 4 or in particular

00785 according to, characterized in that the filter (4) a

00786 has handling tab (15). 00787

00788 6. Odor and / or particle filter after one or

00789 several of claims 3-5 or in particular according thereto,

00790 characterized in that the handling tab (15)

00791 cantilevered at a corner area (D ¹ ) of the filter (4)

00792 is arranged. 00793

00794 7. Odor and / or particle filter after one or

00795 several of claims 3-6 or in particular according thereto,

00796 characterized in that the handling tab (15)

00797 in its length (m) approximately a height (z) of the filter (4)

00798 corresponds. 00799

00800 8. Odor and / or particle filter after one or

00801 several of claims 3-7 or in particular according thereto,

00802 characterized in that the filter (4) with regard

00803 on an odor filter an odor filter layer

00804 (11). 00805 9. Odor and / or particle filter after one or

00806 several of claims 3-8 or in particular according thereto,

00807 characterized in that the odor filter layer

00808 (11) from a foam frame with embedded

00809 activated carbon.

00810

00811 10. Odor and / or particle filter after one or

00812 several of claims 3-9 or in particular according thereto,

00813 characterized in that the filter (4) in view

00814 on a particle filter a particle filter layer

00815 (12).

00816

00817 11. Odor and / or particle filter after one or

00818 several of claims 3-10 or in particular according thereto,

00819 characterized in that the particle filter layer

00820 (12) consists of a fleece.

00821

00822 12. Odor and / or particle filter after one or

00823 several of claims 3-11 or in particular according thereto,

00824 characterized in that the particle filter layer

00825 (12) in the flow direction (r) in front of the odor filter

00826 layer (11) is arranged.

00827

00828 13. Odor and / or particle filter after one or

00829 several of claims 3-12 or in particular according thereto,

00830 characterized in that the odor filter layer

00831 (11) in the flow direction (r) in front of the particle filter

00832 layer (12) is arranged.

00833

00834 14. Odor and / or particle filter after one or

00835 several of claims 3-13 or in particular according thereto,

00836 characterized in that the particle filter layer

00837 (12) between two odor filter layers (11)

00838 is net.

00839 00840 15. Odor and / or particle filter according to one or 00841 several of claims 3-14 or in particular according to it, 00842 characterized in that the odor filter layer 00843 (11) is arranged between two particle filter layers (12) 00844 net. 00845 00846 16. Odor and / or particle filter according to one or 00847 several of claims 3-15 or in particular according thereto, 00848 characterized in that the filter (4) is surrounded by a 00849 skin-like foam (13). 00850 00851 17. Odor and / or particle filter according to one or 00852 several of claims 3-16 or in particular according to it, 00853 characterized in that the foam (13) from 00854 two layers (13 ', 13'') welded together 00855 has a 00856 weld seam (14) that is arranged off-center in height. 00857 00858 18. Odor and / or particle filter according to one or 00859 several of claims 3-17 or in particular according thereto, 00860 characterized in that the weld seam (14) forms a 00861 air-impermeable sealing lip (16). 00862 00863 19. Odor and / or particle filter according to one or 00864 several of claims 3-18 or in particular according to it, 00865 characterized in that the handling tab (15) 00866 is arranged in the region of the weld seam (14).