KR20120050455A - Extractor hood - Google Patents

Abstract

The present invention relates to an ejector hood comprising a fan box (2), an inner frame (3) and a capture panel (4). The ejector hood 1 is characterized in that the fan box 2 is provided with one or more fixed rails 5 comprising one or more connection areas 521, 522 for removable connection with the capture panel 4. .

Description

Ejector Hood {EXTRACTOR HOOD}

The present invention relates to an ejector hood.

In the case of a so-called chimney-shaped ejector hood, the actual hood is fixed to a fan box, which can also be referred to as a fan housing. In the case of a chimney hood, the hood is confined to the top and the outside by a capture panel, with functional elements such as, for example, electronic elements being received in the hood. Also, inside the hood, filter elements covering the inlet of the ejector hood are retained. At the top of the hood the fan box is covered by the year.

The chimney ejector hood is currently manufactured such that the capture panel is screwed with the fan box. In addition, the reinforcement and connecting members are screwed with the capture panel to give the capture panel the necessary rigidity and to be able to secure the function and filter members to the capture panel. Thus, for example, in the rear region of the capture panel, the vertical rear wall portion is screwed with the capture panel. At the bottom, the connecting rails are screwed into the capture panel along the rear edge of the capture panel. Also provided is a reinforcement rail extending centrally along the width of the capture panel. Furthermore, in order to retain the electronic device or at least prevent interference with the electronic device, a shielding plate which is likewise screwed with the capture panel is provided. In addition, a trough shaped guide plate may be secured to the capture panel or to the reinforcing and connecting members to prevent contaminant ingress and to improve air guidance to the air inlet of the fan box. Therefore, in the case of the ejector hood the capture panel represents the support member of the hood.

The shape of the capture panel can vary based on design aspects and mounting space. In this case, the connecting and reinforcing members, the shield plate and the rear wall part depend on the geometry of the capture panel and must be adjusted accordingly. In addition, the shape and dimensions of the rear wall, the connection and reinforcement members and the shield plate depend on the width of the fan box used. Thus far, it has been necessary to manufacture the reinforcement and functional elements corresponding to each type of ejector hood so that the hood can be correspondingly manufactured and connected to the fan box by a capture panel.

DE 299 03 104 U1 describes the type of fastening of the hood (in the document referred to as the hood member). The hood member is fixed to the support frame, which can be inserted into the fan box from the bottom. Moreover, the hood member is connected to the fan box in the capture panel.

A disadvantage of known flue-type ejector hoods is that a wide variety of components are required in order to be able to implement different forms of ejector hoods (especially capture panels and fan boxes). Moreover, manufacturing is complicated by the large number of connection points and difficult due to the partial weakness of access to the connection points. Finally, there is a disadvantage in that the hood must be completely dismantled from the fan box, usually for repair purposes, or for maintenance work, for example of electronic components arranged in the hood.

It is therefore an object of the present invention to provide a solution capable of minimizing the part diversity required to provide different ejector hoods and nevertheless simply assembling and maintaining the ejector hoods.

The present invention is based on the recognition that the above problem can be solved by providing the possibility of fixing the connection of the capture panel to the fan box detachably (no connection between the inner frame and the capture panel is required for such a connection). Shall be.

The problem is thus solved by an ejector hood comprising a fan box, an inner frame and a capture panel. The ejector hood is characterized in that the fan box is provided with at least one fixed rail comprising at least one connection area for a removable connection with the capture panel.

The ejector hood according to the invention preferably represents a chimney ejector hood, in particular a wall mounted chimney ejector hood. In this regard, the fan box is at least partly surrounded by a hood and the hood comprises a capture panel on the outer surface and in which the filter member as well as functional members, for example electronic controls of the ejector hood, are housed. The ejector hood is referred to as the chimney ejector hood. The fan box represents the blower and, in some cases, the motor, as well as the housing in which the corresponding electronic components for the blower operation are housed. In the sense of the present invention, the parts of the ejector hood which comprise a defined interface on the top for fixing to the fan box and at least one interface on the outside for connection with the capture panel are understood as the inner frame of the ejector hood. do. In addition, additional components of the ejector hood (especially electronic components and filter elements) must also be retained in the inner frame. Preferably the inner frame is further used for the targeted air guidance, from the inlet of the underside of the inner frame towards the air inlet of the fan box. For this purpose the inner frame is preferably formed in the form of a trough, where the trough bottom represents the top surface. According to the invention the facing part of the ejector hood is referred to as a capture panel. In this case the capture panel preferably covers the gap between the outer edge of the ejector hood and the fan box at least towards the top.

According to the invention an elongated part is understood as a fixed rail. The fixed rail is provided with one or more connection areas that can be detachably connected to the fan box by a capture panel. Preferably two fixing rails are provided, which are oriented parallel to each other and provided on the sides of the fan box. The capture panel can thus be fitted by sliding onto the fan box from the front, which is not possible in the frame. According to one embodiment, one or more fixing rails are fixed to the outer surface of the fan box. This provides simple access to the fixed rails and allows for external connection to the capture panel in a simple manner. This has the advantage that no engagement in the fan box (such engagement is not possible in some cases when pre-assembling additional components of the ejector hood) to the fan box for the removable fixing of the capture panel to the fan box. In particular in the above embodiment of the ejector hood according to the invention, the capture panel can be mounted to the fan box even if the inner frame is already connected to the fan box. According to an alternative embodiment, a fixed rail is fixed to the underside of the fan box. In this case the securing rails surround the underside of the fan box and can access parts of the securing rails from the outside for fixing the capture panel.

If more than one anchoring rail, preferably two anchoring rails, are provided, the anchoring rails are oriented such that insertion of a portion of the capture panel into the connection area can be effected by horizontal movement. In particular, the capture panel can be fitted slidingly on the fan box from the front, with the parts of the capture panel being received in the connecting areas of the fixed rail.

By securing the capture panel to the fan box by the fixed rail, different geometries and dimensions of the capture panel can be considered by the geometry and dimensions of the fixed rail.

The fixed rail may be integrally formed with the fan box. However, the fixed rail preferably represents a separate part and is fixed to the fan box. This fixing can be effected by screws or rivets.

The advantage of a fixed rail separate from the fan box is that the same fan box can be used for different device concepts as well as for different capture panels. Thus the number of parts required for the manufacture of different ejector hoods is minimized. Since the fixed rails are fixed to the outer surface or the bottom of the fan box, in particular the height difference between the bottom of the fan box and the top of the capture panel can be compensated by the shape of the fixed rail. In the case of ejector hoods in which the capture panel is fixed directly to the bottom of the fan box, the structural height of the ejector hood consists of the height of the fan box and the height of the capture panel. Unlike these ejector hoods, in the case of the ejector hood according to the invention, the overall height of the ejector hood can remain the same even if the height of the capture panel is different.

In addition, the separate fixed rail may be made of a material suitable for its function. For example, the fixed rail is made of metal while the fan box is made of plastic. Thus, on the one hand the weight of the ejector hood is minimized and on the other hand the stability of the metal is used in connection with the capture panel. In addition, the use of separate fixing rails allows the preassembly of the fixing rail (s) to the capture panel. In this case, the fixed rails are only connected to the fan box after they are fixed to the capture panel. This is desirable in the manufacture of the ejector hood, since the ejector hood can be assembled in an upside-down, ie with the bottom side of the fan box facing upwards. In this case, the inner frame may be connected to the fan box after the fixing rail is fixed to the fan box.

Preferably the stationary rail is provided on a flange or web at the bottom edge of the fan box. The flange of the fan box bottom edge extends outward from the fan box. The flange is used for fixing the fan box to the inner frame. Since the fixed rail is also fixed to the flange, no further modification of the fan box is required and conventional fan boxes can be used in the ejector hood according to the invention.

According to a preferred embodiment, the inner frame is fixed to the flange. This is formed by a fan box and an inner frame in which a fixed base structure can be fixed, as well as additional components of the ejector hood. Since a separate connection is constructed between the inner frame and the fan box, the capture panel can be removed from the basic structure without disconnecting the connection between the fan box and the inner frame.

Preferably at least one connection area of the fixed rail is oriented horizontally. Horizontal orientation here refers to the orientation of the connection area allowing horizontal introduction, in particular insertion, of the capture panel into the connection area.

 In addition, the capture panel can be moved in the vertical direction in the connection area to make a connection between the fixed rail and the capture panel. This makes it possible to seat the capture panel on the stationary rail from the top or to insert the capture panel into the stationary rail from the front. This fastening direction is preferred in the basic structure consisting of the fan box and the inner frame, since the capture panel can be slipped and removed on the fan box even in the basic structure without removing the inner frame from the fan box. .

According to one embodiment, one or more of the connection areas is provided with a clamping bracket for clamping a portion of the capture panel. The connection between the fan box and the capture panel is carried out by the clamping connection, so that the connection can be separated again without tools, thereby simplifying assembly and disassembly of the capture panel. The clamping brackets interact with additional parts of the fastening rails (particularly the connecting walls), so that a clamping force can be applied to a part of the capture panel (particularly the edge of the capture panel).

 In addition or alternatively to the clamping bracket, one or more of the connection areas may be provided with a gripping bracket to engage in the cavity of the capture panel. The cavity of the capture panel preferably extends horizontally. Particularly preferably the gripping bracket comprises a clamping area, after which the clamping area exerts a clamping action on the part of the capture panel in which the cavity is provided. By providing a gripping bracket, vertical movement of the capture panel in the fixed state is prevented. This can reliably prevent separation of the capture panel from the fan box.

In addition or alternatively to the clamping brackets and gripping brackets described, another connecting member can also be used in the fixing rails which facilitates the form coupling between the capture panel and the fixing rails.

According to one embodiment, one clamping bracket is provided in one or more connection areas and one gripping bracket in one or more connection areas and the height of the gripping bracket is lower than the height of the clamping bracket. Thus, the edge of the capture panel inserted into the fixing rail can be held by the clamping bracket over its entire height, and a gripping bracket that engages in the cavity of the area can be provided adjacent to the clamping bracket.

According to a preferred embodiment, the stationary rail comprises a U-shaped profile portion and the connection area is provided on one of the legs of the U-shaped profile portion. The legs are therefore also referred to as connecting walls. In the case of this embodiment, the fixed rail has a particularly simple structure. The clamping bracket and the gripping bracket are formed by forming slots in the legs of the U-shaped profile portion and bending the material located between the slots. The bottom or base of the U-shaped profile portion can be used for fixing to the fan box (especially the flange of the fan box). In the case of the above embodiment, the legs of the U-shaped profile portions that are disposed opposite may alternatively be used for fixing to the fan box. In particular, by the legs arranged in this manner in the U-shaped profile portion, the fixed rail can be supported by the fan box. The legs are therefore also referred to as support walls. In the gap between the two legs of the U-shaped profile portion, the bottom of the year covering the fan box can be inserted.

According to a further embodiment, the fixed rail comprises a U-shaped profile portion and the connecting regions are provided on the legs of the U-shaped profile portion which are disposed opposite. This embodiment can thus be used in two mounting positions. As the fixed rail rotates 180 °, different legs can be used to secure the capture panel.

Preferably one of the legs of the U-shaped profile portion is used as a support wall for supporting the side of the fan box. This is desirable as it improves the overall stability of the ejector hood.

According to one embodiment, the legs of the U-shaped profile portion of the fixed rail have different heights. This embodiment is particularly preferred in the case of a fixed rail in which connecting regions are provided on the legs of the oppositely-shaped U-shaped profile portion. Based on these different heights, a fixed rail can be used for fixing the capture panels of different heights. By 180 ° rotation, it is possible to reverse between two different heights of the capture panel. This further reduces the number of parts required for the production of different ejector hoods.

The capture panel preferably includes a cavity at the edge for connection with the gripping bracket. Particularly preferably, the capture panel comprises at its inner edge a fold edge with at least one locking lug formed therein. The locking lugs can surround the gripping bracket or the clamping bracket further improving the retention of the capture panel for the fan box.

The expressions "front," "rear", "side", "horizontal" and "vertical" as used in the description of the present invention relate to the ejector hood in its assembled state on the wall, unless otherwise indicated.

Hereinafter, the present invention will be described again based on the accompanying drawings.
1 is a schematic exploded view of an embodiment of an ejector hood according to the invention.
2 is a schematic perspective view of an embodiment of a fixing rail of the ejector hood according to the invention.
3 and 4 are schematic cross-sectional views along cut lines AA and BB for the fixed rail according to FIG. 2.
5 is a schematic perspective view of a fixed rail fixed to the capture panel.
6 is a schematic bottom view of a capture panel to which a fixed rail is fixed.
7 is a sketch showing a principle of connection between a capture panel and a fan box by a fixed rail.
8 is a schematic rear view of an ejector hood according to the invention with different capture panels.

In the drawings like parts are designated by like reference numerals and the structure and function of the same parts are described only once in some cases.

An embodiment of the ejector hood 1 according to the invention shown in FIG. 1 comprises a fan box 2, which consists of a box-shaped base body 20 and flanges (at the side of the underside of the fan box). 21 is provided, these flanges extending outwardly from the sides of the base body 20 respectively. In addition, the ejector hood 1 comprises an inner frame 3, the upper side of which is connected to the fan box 2, in particular to the flanges 21. The inner frame 3 comprises a trough type main body 32. At the bottom of the base body 32, a rectangular vent 33 is provided.

The ejector hood 1 also includes a capture panel 4 which is fixed to a basic structure consisting of a fan box 2 and an inner frame 3. The top of the capture panel 4 has a rectangular cavity extending from the back, the size of which corresponds at least to the size of the bottom of the fan box 2. On the inner side of the cavity, the capture panel 4 comprises three inner sides with one inner fold edge 42 oriented in the downward direction. Into the inner frame 3 filter elements 7 representing the filter cartridge are inserted. The ejector hood 1 also comprises a light strip 6 into which the lighting means 61 are inserted, in which the lighting means are connected via a wiring 62. Finally the ejector hood 1 comprises an actuating member 8 which is fixed to the capture panel 4 via fixings 81.

For removable connection of the capture panel 4 to the fan box 2, fixed rails 5 are provided which are fixed to the fan box 2 according to the illustrated embodiment. These fixing rails 5 are in particular fastened to the flange 21 of the fan box 2, which extends from the side toward the outside from the lower edge of the base body 20 of the fan box 2.

2 shows a perspective view of an embodiment of a fixed rail 5. In this embodiment, the fixed rail 5 has a U-shape. At the end of the bottom 50 of the fixing rail 5, there are provided fixing grooves 53 in the form of cavities, respectively. In Fig. 2, the left leg of the U-shaped profile portion becomes the support wall portion 51. The opposite leg is a connecting wall 52 which connects the capture panel 4 with the fixed rail 5 so that it can be connected with the fan box 2. The connecting wall 52 is provided with connecting areas. In the illustrated embodiment these connection regions are formed by the clamping bracket 521 and the gripping bracket 522. The brackets 521 and 522 are formed in the connecting wall 52 by slots, respectively.

In the illustrated embodiment, two clamping brackets 521 are provided, which extend from the bottom 50 of the fixed rail 5 over the entire height of the connecting wall 52 and to the connecting wall 52. Offset inward to the support wall 51. The two gripping brackets 522 provided in the illustrated embodiment extend only from the upper edge of the connecting wall to half of the height of the fixing rail 5. The gripping bracket 522 is likewise offset inward with respect to the connecting wall 52, ie in the direction of the supporting wall 51.

As can be seen from the cross-sectional views of FIGS. 3 and 4, the cross section along cut lines AA and BB in FIG. 2, between the clamping bracket 521 and the gripping bracket 522 and the connecting wall 52. One receptacle is formed by each space | interval. A part of the capture panel 4, in particular a part of the edge of the capture panel 4, is inserted into the receptacle.

Obviously, the present invention is not limited to the embodiment of the fixed rail shown. In particular, for example, the height of the clamping bracket 521 may be lower than the height of the connecting wall portion. In this embodiment the clamping bracket 521 is still provided on the upper side of the connecting wall 52.

The capture panel 4 shown in FIG. 6 comprises a frame 40 on the side and front side at the outer edge of the base, which extends inward from the outer edge. The top of the capture panel 4 is provided with a cavity extending from the back of the capture panel 4, into which the fan box 2 of the ejector hood 1 can be inserted. One inner fold edge 42 is provided along the front and sides of the cavity, respectively, and the fold edge extends from the top of the capture panel 4 to the bottom (and thus to the top in the bottom view shown). The capture panel 4 is fixed to the fan box 2 via the inner fold edge 42. To this end, one fixing rail 5 is attached to the inner folded edge 42 of the side. Thus, these two fixed rails 5 extend parallel to each other.

The perspective view of FIG. 5 shows the removable connection of the fixed rail 5 to the capture panel 4. Here, the fixed rail 5 is fitted while sliding to the side inner folded edge portion 42 of the capture panel 4 from the rear side. At this time, the clamping bracket 521 remains on the inner side of the folded edge portion 42. On the other hand, the area of the connecting wall 52 below the gripping bracket 522 is disposed behind the locking lug 421, and the locking lug is provided in the folded edge 42 of the capture panel. The locking lug 421 is horizontally backwards for this purpose. The locking lug 421 is provided at half the height of the inner fold edge 42 to reach the bottom edge of the inner fold edge 42. The bottom 50 of the fixed rail is oriented in the direction of the cavity in the capture panel 4 in the assembled state. Thus, in the cavity, the support wall 51 projects upward from the bottom 50 of the fixed rail 5.

7 shows the fastening to the fan box 2 of the capture panel 4 connected to the fastening rail 5. The fixing of the capture panel 4 to the fan box 2 can be made in such a way that the capture panel is inserted into the fixing rail 5 only after the fixing rail 5 is connected to the fan box 2. The bottom 50 of the fixed rail 5 is screwed with the flange 21 of the fan box 2. In the embodiment shown, the fixing rail 5 is connected to the flange 21 so that the flange is received in the U-shaped profile part and supported by the bottom 50 of the fixing rail 5. The support wall 51 is supported inward with respect to the fan box 2, while the connection wall 52 is offset outward with respect to the fan box 2 and protrudes upwards. In addition, the flue 9 surrounding the fan box 2 can be inserted into the U-shaped profile part of the fixed rail 5. The fixing rail 5 is fixed to the flange 21 by the fixing groove 53 and the fixing opening 54 of the fixing rail 5. The inner frame 3 is then screwed from the bottom. Thus, the bottom 50 of the fixed rail 5 is located between the bottom of the flange 21 and the top of the inner frame 3.

In this state, the capture panel 4 is fixed to the fan box 2, but can be separated by the horizontal displacement of the fixed rail 5 fixedly connected to the fan box 2 and in some cases vertical rise. The capture panel 4 is maintained by the clamping force and the form engaging force of the bracket structure provided on the connecting wall 52. In addition, the capturing panel 4 can also be maintained by the upper surface of the capturing panel being supported on the upper edge of the connecting wall 52 at the inner fold edge 42.

In figure 8 three different embodiments of the ejector hood 1 according to the invention are shown. In this case the present embodiments are distinguished only by the capture panel 4 used. The capture panel 4a is a so-called box capture panel having a rectangular box shape. The capture panel 4b is distinguished from the capture panel 4a only by height. The capture panel 4c is a so-called ripped-roof panel in which the height of the capture panel 4c rises from the outer edge of the capture panel toward the rear cavity.

As can be seen from FIG. 8, all three embodiments of the ejector hood 1 consist of the same basic structure consisting of a fan box 2 and an inner frame 3. A fixed rail 5 is used for fixing the different capture panels 4. The fixed rail is the same for all three ejector hoods in the embodiment shown. The height difference of the capture panel 4 in the fan box 2 is compensated by the length of each of the folded edge portions 42 of the capture panels 4a, 4b, 4c.

However, it is also possible for other fixed rails 5 to be used for each of the capture panels 4a, 4b, 4c. In particular, a fixed rail 5 having a different height of the connecting wall 52 can be used. In this case, the folding edge portions 42 of the capture panels 4a, 4b and 4c are the same. Also, for example, a fixed rail 5 may be used in which the legs of the U-shaped profile section have different heights and are provided with clamping brackets 521 and / or gripping brackets 522 on the two legs.

In particular, the present invention is used in an ejector hood in which a supported inner frame structure is used which forms a basic structure together with a fan box. This chimney construction ensures that all cables and electrical components are covered by the inner frame, so customer access is not possible. Since the inner frame is an important supporting member, it cannot be disassembled even in the case of customer after-sales service. In this structure, the capture panel can be considered a design cover, so in the case of troubleshooting the capture panel should be as simple as possible so that the repair technician has access to the parts under the panel. This is made possible by the present invention.

In the case of after-sales service, the technician only needs to disconnect the connection formed at the outer edge between the inner frame and the capture panel in some cases, and can continue to move the capture panel forward slightly to release and remove it. The support structure of the fan box and the inner frame remains on the wall with electrical components and is now freely accessible to the technician.

In addition, in the case of the present invention, there is no difference in the height of the device itself in spite of the different capture panels, since the capture panels move substantially high in the fan box. Thus, the overall height of the instrument remains the same for all capture panel shapes.

The present invention has a series of advantages. On the one hand, a single fixed rail can be used for capture panels of different structural heights. This simplifies manufacturing and storage. On the other hand, assembly is simplified. As a result, the after-sales technicians have better access to the main components by the present invention.

1: ejector hood
2: fan box
20: main body
21: flange
3: inner frame
32: Trough type main body
33: vent
4: capture panel
40: bottom of frame
42: internal folding edge
421: locking rug
5: fixed rail
50: bottom
51: support wall
52: connecting wall
521: clamping bracket
522: Gripping Brackets
53: fixed cavity
54: fixed opening
6: light strip
61: lighting means
62: wiring
7: filter member
8: working member
81: fixing part
9: year

Claims (13)

In the ejector hood comprising a fan box 2, an inner frame 3 and a capture panel 4,
The fan box 2 is provided with one or more fixed rails 5, characterized in that the fixed rails comprise one or more connection areas 521, 522 for removable connection with the capture panel 4. Ejector hood. Ejector hood according to claim 1, characterized in that the fixing rail (5) is fixed to the fan box (2). Ejector hood according to claim 1 or 2, characterized in that the fixing rail (5) is provided on the flange (21) at the lower edge of the fan box (2). Ejector hood according to claim 3, characterized in that the inner frame (3) is fixed to the flange (21). 5. The ejector hood of claim 1, wherein the one or more connection regions (521, 522) are oriented horizontally. 6. 6. The clamping bracket 521 according to claim 1, wherein at least one of the connection regions 521, 522 is provided with a clamping bracket 521 for clamping a portion of the capture panel 4. 7. Ejector hood. 7. The gripping bracket 522 according to claim 1, wherein at least one of the connection regions 521, 522 is provided with a gripping bracket 522 to engage in the cavity of the capture panel 4. Ejector hood. 8. The clamping bracket according to claim 1, wherein at least one of the connection regions 521, 522 is provided with one clamping bracket 521, and at least one of the connection regions 521, 522. Ejector hood, characterized in that one gripping bracket (522) is provided in the connection area, the height of the gripping bracket (522) being lower than the height of the clamping bracket (521). 9. The stationary rail (5) according to any one of the preceding claims, characterized in that the fixed rail (5) comprises a U-shaped profile part and the connecting regions (521, 522) are provided on one of the legs of the U-shaped profile part. Ejector hood. 10. The ejector hood according to any one of the preceding claims, wherein the fixed rail comprises a U-shaped profile portion and the connecting regions 521, 522 are provided on oppositely disposed legs of the U-shaped profile portion. . Ejector hood according to claim 9 or 10, characterized in that one of the legs of the U-shaped profile portion is used as the support wall portion (521). 12. The ejector hood of any one of claims 9 to 11, wherein the legs of the U-shaped profile portion have different heights. 13. The ejector according to claim 1, wherein the capture panel 4 comprises at its inner edge a folded edge 42 having one or more locking lugs 421 formed therein. Hood.

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