FILTER DEVICE AND FUME EXTRACTION DEVICE COMPRISING FILTER DEVICE

Abstract

A filter device for a fume extraction device includes at least two filter elements arranged at an angle relative to one another, and a holding frame for holding the at least two filter elements. An edge of one of the at least two filter elements lies adjacent to an edge of the other one of the at least two filter element. Each of the at least two filter elements has a surface with a variable distance between opposite outer faces of the filter element.

Claims

1-14. (canceled)

15. A filter device for a fume extraction device, said filter device comprising: at least two filter elements arranged at an angle relative to one another, with an edge of one of the at least two filter elements lying adjacent to an edge of the other one of the at least two filter element, each of the at least two filter elements having a surface with a variable distance between opposite outer faces of the filter element; and a holding frame for holding the at least two filter elements.

16. The filter device of claim 15, wherein the adjacent edges of the at least two filter elements abut one another.

17. The filter device of claim 15, wherein the at least two filter elements are at an angle of less than 90 and preferably less than 40 relative to one another.

18. The filter device of claim 15, wherein the distance between the opposite outer faces of each of the at least two filter elements from one edge of the filter element in a direction of an opposite edge increases from a minimum to a maximum and from the maximum to the opposite edge decreases to the minimum, with the filter element preferably having a diamond-shaped cross-section.

19. The filter device of claim 15, wherein the holding frame includes two end walls which abut end faces of the at least two filter elements, and rails running between the end walls.

20. The filter device of claim 19, wherein each of the end walls has a side which faces the rails, said holding frame including a handle formed on the side and extending in a longitudinal direction of the rails.

21. The filter device of claim 19, wherein a first one of the rails is configured to hold the adjacent edges of the at least two filter elements, with a second one of the rails configured to hold opposite spaced-apart edges of the at least two filter elements.

22. The filter device of claim 21, wherein the first one of the rails includes a web running in a longitudinal direction, said adjacent edges of the at least two filter elements abutting opposite sides of the web.

23. The filter device of claim 15, wherein the holding frame is formed in one piece.

24. The filter device of claim 15, wherein at least one the at least two filter elements includes a support element which extends in a longitudinal direction of the filter element in its interior.

25. A fume extraction device, comprising: a fume extraction housing having an upper face with a suction opening; a fan arranged offset downward relative to the suction opening; and a filter device comprising at least two filter elements arranged at an angle relative to one another, with an edge of one of the at least two filter elements lying adjacent to an edge of the other one of the at least two filter element, each of the at least two filter elements having a surface with a variable distance between opposite outer faces of the filter element, and a holding frame for holding the at least two filter elements.

26. The fume extraction device of claim 25, wherein the adjacent edges of the at least two filter elements abut one another.

27. The fume extraction device of claim 25, wherein the at least two filter elements are at an angle of less than 90 and preferably less than 40 relative to one another.

28. The fume extraction device of claim 25, wherein the distance between the opposite outer faces of each of the at least two filter elements from one edge of the filter element in a direction of an opposite edge increases from a minimum to a maximum and from the maximum to the opposite edge decreases to the minimum, with the filter element preferably having a diamond-shaped cross-section.

29. The fume extraction device of claim 25, wherein the holding frame includes two end walls which abut end faces of the at least two filter elements, and rails running between the end walls.

30. The fume extraction device of claim 29, wherein each of the end walls has a side which faces the rails, said holding frame including a handle formed on the side and extending in a longitudinal direction of the rails.

31. The fume extraction device of claim 29, wherein a first one of the rails is configured to hold the adjacent edges of the at least two filter elements, with a second one of the rails configured to hold opposite spaced-apart edges of the at least two filter elements.

32. The fume extraction device of claim 31, wherein the first one of the rails includes a web running in a longitudinal direction, said adjacent edges of the at least two filter elements abutting opposite sides of the web.

33. The fume extraction device of claim 25, wherein the holding frame is formed in one piece.

34. The fume extraction device of claim 25, wherein at least one the at least two filter elements includes a support element which extends in a longitudinal direction of the filter element in its interior.

35. The fume extraction device of claim 25, wherein the filter device is arranged in the fume extraction housing such that the adjacent edges of the at least two filter elements face away from the suction opening.

36. The fume extraction device of claim 25, wherein the fume extraction housing has at least one area configured to enlarge downward from the suction opening, said filter device having at least one area located in the enlarged area.

37. The fume extraction device of claim 25, wherein the suction opening has a rectangular, elongated cross-section and preferably has a width of 150 mm.

Description

[0038] The invention is explained again below with reference to the accompanying figures, in which:

[0039] FIG. 1: shows a schematic, perspective sectional view of an embodiment of the inventive fume extraction device with a first embodiment of the inventive filter device;

[0040] FIG. 2: shows a further schematic, perspective sectional view of the embodiment of the inventive fume extraction device according to FIG. 1;

[0041] FIG. 3: shows a schematic perspective view of the first embodiment of the filter device according to FIG. 1;

[0042] FIG. 4: shows a schematic perspective view of a second embodiment of the inventive filter device; and

[0043] FIG. 5: shows a schematic sectional view of the second embodiment of the filter device according to FIG. 4.

[0044] FIG. 1 shows a schematic, perspective sectional view of an embodiment of the inventive fume extraction device 1 with a first embodiment of the inventive filter device 2. The fume extraction device 1 comprises a fume extraction housing 10 and a filter device 2. In addition, the fume extraction device 1 comprises a fan, which is not shown in FIG. 1, but is preferably offset downward relative to the fume extraction housing 10.

[0045] The fume extraction housing 10 has an elongated shape. In the assembled state, the fume extraction housing 10 lies parallel to an edge of a hob (not shown). The fume extraction housing 10 is particularly preferably arranged between two hobs (not shown) and extends in the depth direction of the hobs. Alternatively, the fume extraction housing 10 can also be introduced into a recess made in the depth direction of the hob.

[0046] The fume extraction housing 10 has a suction opening 100 in the upper face. The suction opening 100 has a rectangular cross-section. A first duct section 103 is contiguous with the suction opening 100 at the bottom, and has a rectangular cross-section corresponding to the cross-section of the suction opening 100 and whose cross-section is constant over the height of the first duct section 103. At the bottom, an enlargement 101 of the fume extraction housing 10 is contiguous with the first duct section 103. The width of the fume extraction housing 10 increases over the height of said enlargement 101. A second duct section 104 is contiguous with the enlargement 101. The second duct section 104 has a cross-section which is constant over its height and is closed below by a bottom 105. A duct 106 is contiguous with the rear wall of the fume extraction housing 10, air being able to reach the fan of the fume extraction device 1 via said duct 106. The duct 106 is curved and hence directs the air downward.

[0047] In the assembled state of the fume extraction device 1, the suction opening 100 lies in the plane of the hob(s) (not shown). In the embodiment shown, the suction opening 100 is covered by a grille 3. It is however also possible to close the suction opening 100, in the state in which the fume extraction device 1 is not in operation, by another cover element, for example a plate or flap.

[0048] A filter device 2 is introduced into the fume extraction housing 10.

[0049] The filter device 2, which is also shown in more detail in FIGS. 2 and 3, consists of two filter elements 20 and a holding frame 21.

[0050] The two filter elements 20 are held in the holding frame 21. Each of the filter elements 20 has a variable distance A between the opposite outer faces 200, 201 of the filter element 20 over its surface. In particular, the filter elements 20 in the embodiment shown have a diamond-shaped cross-section. The two filter elements 20 are arranged at an angle relative to one another and an edge 203, which can also be referred to as the lower longitudinal edge, of one of the filter elements 20 lies adjacent to a further edge 203 of the other filter element 20. The two filter elements 20 thus form a V-shape. In the embodiment shown, a support element 202 is provided in each filter element 20, which extends in the center of the filter elements 20 in their longitudinal direction. The support elements 202 can be rods or tubes.

[0051] The holding frame 21 consists of a first rail 210 and two second rails 211, 212. In the embodiment shown, the lower longitudinal edges 203 of the two filter elements 20 are held in a first rail 210. The rail 210 moreover has a web 2100 which extends in the longitudinal direction of the rail 210 and lies in the center thereof. The two filter elements 20 thus rest with their lower edges 203 on opposite sides of the web 2100 in the first rail 210. The second rails 211, 212 run on the upper longitudinal edges 204 of the filter elements 20, i.e. the upper edges 204 are each accommodated in one of the second rails 211, 212 of the holding frame 21. At the longitudinal ends, the holding frame has end walls 213, 214, each of which has a trapezoidal shape. The rails 210, 211, 212 rest with their longitudinal ends on the end walls 213, 214 and are preferably fastened thereto or configured therewith in one piece.

[0052] As can be seen from FIGS. 2 and 3, a handle 216 is provided on the inner face of the end wall 213, which in the embodiment shown has a partial circular shape. A handle, which is not visible in the figures, is also preferably provided on the inner face of the end wall 214. Moreover, in the embodiment shown, the filter device 2 has support walls 217 which extend inward from the end walls 213, 214 and at the end-face ends of the filter elements 20 over the width of the filter elements 20 abut the outer faces 200, 201 of the filter elements 20. The support walls thus run perpendicular to the rails 210, 211, 212.

[0053] Moreover, the holding frame 21 has struts 215 running between the second rails 211, 212 and the first rail 210. These extend perpendicular to the rails 211, 212, 210 and have a small width. The struts 215 serve to additionally hold the filter elements 20 and in particular the filter material.

[0054] The filter device 2 is introduced into the fume extraction housing 10 such that the tip of the V-shape is directed downward. In particular, the second rails 211, 212 of the holding frame 21 lie in the vicinity of the suction opening 100 in the first duct section 103 of the fume extraction housing 10. The first rail 210 is offset downward relative to the second rails 211, 212. In the embodiment shown, the first rail 210 and thus the lower face of the filter device 2 lies in the region of the second duct section 104 of the fume extraction housing 10.

[0055] As can be seen from FIG. 2, in the embodiment shown a holding geometry 102 is formed on the end walls of the fume extraction housing 10, which extends inward from the end wall of the fume extraction housing 10 and supports the filter device 2 at its longitudinal ends from below. In particular, the holding geometry 102 therefore represents a V-shaped strip of material.

[0056] FIGS. 4 and 5 show a second embodiment of the inventive filter device 2. This embodiment differs from the embodiment shown in FIGS. 1 to 3 only in that the rails 210, 211 and 212 to the end walls 213, 214 represent separate components. In this embodiment, the rails 210, 211, 212 are configured such that inwardly directed folded edges are provided on their open side which engage in the filter material of the filter elements 20 and are thus fastened to the filter material. Moreover, in contrast to the first embodiment, no web is provided in the case of the first rail 210. The folded edges of the lower rail 210, which are provided on the upper edges thereof, each engage onto an outer face 200, which forms the clean air side of the filter elements 20. In the second embodiment of the filter device 2, the end walls 213, 214 are connected to the filter elements 20 by screws (see FIG. 4). The screw protrudes through the end wall 213 or 214 and engages in the longitudinal end of the support element 202 of the filter element 20, which represents a tube. As a result, the filter device 2 forms a structural unit and can be introduced and removed as a whole into the fume extraction housing 10 of a fume extraction device 1.

[0057] The present invention has a number of advantages. In particular, by combining a V-shaped arrangement of filter elements and the three-dimensional configuration of the filter elements, in particular a diamond shape, the filter area through which fumes and vapors can be filtered can be maximized.

REFERENCE CHARACTERS

[0058] 1 Fume extraction device

[0059] 10 Fume extraction housing

[0060] 100 Suction opening

[0061] 101 Enlargement

[0062] 102 Holding geometry

[0063] 103 First duct section

[0064] 104 Second duct section

[0065] 105 Bottom

[0066] 106 Duct

[0067] 2 Filter device

[0068] 20 Filter element

[0069] 200 Outer face

[0070] 201 Outer face

[0071] 202 Support element

[0072] 203 Edge

[0073] 204 Edge

[0074] 21 Holding frame

[0075] 210 First rail

[0076] 2100 Web

[0077] 211 Second rail

[0078] 212 Second rail

[0079] 213 End wall

[0080] 214 End wall

[0081] 215 Strut

[0082] 216 Handle

[0083] 217 Support wall

[0084] 3 Grille

[0085] A Distance

[0086] Angle of inclination