Fire damper comprising a housing for a damper pivotable around a pivot axis therein and a kit surrounded on the outside of the housing

Abstract

The invention relates to a fire damper (1) with a housing (2) for a shut-off damper pivotably mounted therein about a pivot axis and with an installation kit (4) surrounding the housing (2) on the outside, wherein the installation kit (4) comprises at least one plate (5), wherein each plate (5) is designed to form a recess (16) for receiving the housing (2), wherein each plate (5) has two plate surfaces (8) connected to each other by both an outwardly facing circumferential end surface (6) and by a circumferential contact surface (7) forming the recess (16), and wherein each plate (5) can be attached from the outside around the housing (2).To specify a fire damper (1) whose installation kit is easier to manufacture and lighter while ensuring good installation, at least one panel (5), preferably all panels (5), should be made of a material comprising wood and / or a wood-based material, or at least one panel (5), preferably all panels (5), should be made entirely of wood or a wood-based material.

Description

[0001] The invention relates to a fire damper with a housing for a shut-off damper pivotably mounted therein about a pivot axis and with a mounting kit surrounding the housing on the outside, wherein the mounting kit comprises at least one plate, wherein each plate is designed to form a recess for receiving the housing, wherein each plate has two plate surfaces connected to each other by both an outwardly facing circumferential end face and by a circumferential contact surface forming the recess, and wherein each plate can be attached from the outside around the housing.

[0002] Fire dampers with an externally enclosing mounting kit are known from practical experience. The mounting kit(s) are typically made of a non-combustible material, namely calcium silicate. A disadvantage of calcium silicate is its high density. Since the fire dampers can be quite large, they are correspondingly heavy due to the calcium silicate mounting kit. Furthermore, calcium silicate is highly brittle and breaks relatively easily. Therefore, both processing and installing calcium silicate panels are difficult. Another disadvantage is that processing calcium silicate panels, for example by sawing, results in undesirable dust formation. EP 3 047 878 ​​A1 discloses a fire damper with a non-combustible casing.

[0003] The object of the invention is to avoid the aforementioned disadvantages and to provide a fire damper whose installation kit is easier to manufacture and lighter while simultaneously ensuring good installation.

[0004] This problem is solved in a fire damper according to the invention, claim 1, in that at least one panel, preferably all panels, consists of a material comprising wood and / or a wood-based material, or that at least one panel, preferably all panels, consists entirely of wood or a wood-based material. Such fire dampers are, for example, installed in a wall opening in a wall, which preferably consists of wood or a wood-based material.

[0005] The fire damper according to the invention is lighter than a known fire damper and also less expensive to manufacture, since the production costs for calcium silicate boards are higher. Furthermore, boards made of a material comprising wood and / or a wood-based material, or made entirely of wood or a wood-based material, can be processed more easily and, above all, without dust. Moreover, such boards do not break as easily as calcium silicate boards. Wood is also a sustainable material.

[0006] Furthermore, a panel made of a material that includes wood and / or a wood-based material, or that consists entirely of wood or a wood-based material, possesses sufficiently good fire resistance. In the event of a fire, the surface exposed to the flames chars. The resulting charred layer on the exposed surface then serves as a protective layer against the fire for the prescribed fire resistance period of a fire damper. In this respect, the installation kit meets the relevant fire resistance class. This refers to the duration for which the fire damper maintains its function in a standard fire scenario.

[0007] The term "wood" refers to solid wood. If a panel consists entirely of wood, it is made entirely of solid wood. Of course, it is also possible for a panel to consist of several layers of solid wood.

[0008] Solid wood refers to wood that is sawn and processed from a single piece of a log. In this sense, solid wood refers to pieces of wood that are sawn entirely from a single log. Solid wood thus consists of a naturally grown, continuous piece of wood.

[0009] Like solid wood, engineered wood consists entirely of real wood. While solid wood is sawn and processed from a single piece of a tree trunk, engineered wood, on the other hand, does not consist of a continuous, i.e., continuously grown, piece of wood. For engineered wood, pieces of solid wood, preferably of the same size, are glued together, planed, and processed.

[0010] The solid wood may be softwood. Softwood refers to all wood species with an oven-dry density of less than 0.55 g / cm³. The vast majority of coniferous trees and also various deciduous trees, such as poplars or lindens, fall into this category.

[0011] The softwood can be either Paulownia or Kiri. Paulownia is obtained from Paulownia trees. Paulownia trees belong to the Paulowniaceae family. The oven-dry density of Paulownia is approximately 0.15 g / cm³ to 0.35 g / cm³. Paulownia is extremely fast-growing. Therefore, it represents a very sustainable material, especially from a CO₂ perspective, and is also easy to process, for example, by shaving. The residual moisture content of Paulownia wood is low. Paulownia wood is lightweight. Paulownia wood also has a high flash point and is therefore difficult to ignite. Since Paulownia wood does not off-gas, it is particularly suitable for use in cleanrooms, such as operating rooms.

[0012] Kiri, like balsa wood, possesses excellent insulating properties with respect to electricity, heat, and cold. Kiri is exceptionally fire-resistant. Its ignition temperature is around 420°C, significantly higher than that of many other hardwoods.

[0013] The softwood could be balsa. Balsa belongs to the Malvaceae family. Its oven-dry density is approximately between 0.04 g / cm³ and 0.15 g / cm³.

[0014] The term "wood-based material" primarily refers to the materials listed in DIN EN 13986:2015-06. According to Table 8 of DIN EN 13986:2015-06, examples of wood-based materials include hard fiberboard (EN 622-2), medium-hard fiberboard (EN 622-3), particleboard (EN 312), MDF (EN 622-5) (medium-density fiberboard), OSB (oriented strand board) (EN 300) (oriented strand board), plywood (EN 636), solid wood panels (EN 13353), and particleboard (EN 15197). A wood-based material can also contain softwood, such as paulownia, kiri, or balsa, as at least one component.

[0015] Advantageously, at least one panel can have a fire-retardant coating, at least partially. It is sufficient if at least those areas of the panel exposed to a potential fire are coated with the fire-retardant coating. Such a fire-retardant coating can therefore be applied either partially or completely to the panel surfaces, the end face, and / or the contact surface of one or more panels. The fire-retardant coating can, for example, be a flame-retardant paint layer. The fire-retardant coating does not extend the fire resistance duration, but rather reduces the flammability of the building material from the level of "normally flammable (building material class B2)" to the level of "flame-retardant (building material class B1)."A fire-retardant coating can also be a fire-retardant paint, which is usually transparent and, in some systems, may also be covered with an additional protective varnish / topcoat. For larger areas, a fire-retardant coating (fire-retardant paint) can be applied using an airless sprayer. For smaller areas, application with a roller and brush is recommended.

[0016] The mounting kit can comprise at least two, preferably three, adjacent plates. The adjacent plates abut each other at their surfaces. The end faces of adjacent plates can be aligned. In this case, the end faces of each plate are flush with the end face of the adjacent plate(s). However, it is also conceivable that the end faces are not flush. It is advantageous if the contact surfaces of all plates are aligned. Then the contact surfaces of each plate are flush with the contact surface of the adjacent plate. In this case, ideal contact of the contact surfaces is achieved even when using multiple plates on the outside of the housing. The adjacent plates can also be joined together to form a single block. This ensures, in particular, improved stability during installation.

[0017] At least one of the panels can be made of a non-combustible material. For example, such a panel could be made of calcium silicate or sheet metal. Of course, other materials are also conceivable.

[0018] All panels of the installation kit can be made of the same material. In this case, material homogeneity of the installation kit is guaranteed. Furthermore, a modular manufacturing process can be used.

[0019] At least one plate, preferably all plates, can have a thickness between 10 mm and 50 mm, preferably between 15 mm and 30 mm. All plates can have the same dimensions, in particular the same outer dimensions, or different dimensions, in particular different outer dimensions.

[0020] Furthermore, the installation kit can include a stiffening plate, preferably made of sheet metal. The stiffening plate can be positioned against the surface of an adjacent plate or between the surfaces of two plates. If the installation kit comprises multiple plates, the stiffening plate can, for example, be positioned against the free outer surface of the plate that, when installed, is furthest from the wall. Of course, other arrangements of the stiffening plate are also conceivable. For instance, the stiffening plate can also be positioned between two plates. A stiffening plate ensures, in particular, improved stability of the installation kit. The stiffening plate can be made of steel, for example, but other materials are also possible.

[0021] Advantageously, at least one plate, preferably each plate, can be formed from at least two plate segments such that the entirety of all plate segments of the respective plate forms the recess for receiving the housing, wherein each plate segment can be attached laterally from the outside, particularly in a radial direction, around the housing, and wherein the associated plate segments of the at least one plate, preferably each plate, contact each other at two butt edges when attached. Two contacting butt edges of two plate segments of a plate that touch each other when attached each form a pair. If a plate comprises, for example, two plate segments, the plate has a total of two pairs. The formation of a plate from plate segments allows the installation kit to be assembled on-site.For example, the housing can be connected to the existing ductwork system in advance. Then, the required number of panel segments are attached to the outside to form a panel and fixed in place.

[0022] Furthermore, at least two plate segments of at least one plate that are in contact with each other in the installed state can be connected directly or indirectly by means of at least one connecting element. The at least one connecting element extends through the plate segments outside the housing.

[0023] At least one connecting element can be a screw, a nail, a threaded rod, or the like. Of course, other designs for a connecting element are also possible.

[0024] Advantageously, in at least one pair of contacting butt edges of two plate segments of a plate that touch each other in the installed state, each of these butt edges can have two butt surface areas, wherein the two butt surface areas of the butt edge of one plate segment are offset from each other, and wherein the butt edge of the other plate segment is designed such that all butt surface areas of the two butt edges touch in the installed state. Two contacting butt edges of two plate segments of a plate that touch each other in the installed state again form a pair. If a plate comprises, for example, four plate segments, the plate has a total of four pairs. In such a design, a connecting element can also be oriented so that it is parallel to the central axis of the housing and thus parallel to the flow direction.In such a design, a correspondingly aligned connecting element spans the offset areas of a butt joint.

[0025] Furthermore, at least one pair of contacting butt edges of a plate can be offset from the adjacent pair of contacting butt edges of at least one neighboring plate. In such a configuration, the two pairs are not aligned in the direction of flow. The offset of the respective butt edges can improve the stability of adjacent plates and plate segments through increased friction.

[0026] Advantageously, at least two, preferably three, adjacent plate segments from neighboring plates can be joined to form a block before being attached to the housing. A block can, for example, consist of three plate segments from three adjacent plates. If a plate consists of two plate segments, each segment forms one half of the plate. This design simplifies assembly. If, for example, a mounting kit consists of three plates, each plate being formed from two plate segments, two blocks, each consisting of three plate segments, are first produced. The two blocks are then placed around the housing from the outside and fastened accordingly.

[0027] Furthermore, at least two, preferably three, adjacent plate segments of neighboring plates can be connected to form a block by means of at least one connecting element. At least one connecting element can be designed as a screw, a nail, a threaded rod, or the like. Of course, other designs of a connecting element are also possible.

[0028] Advantageously, a sealing element can be arranged at at least one butt joint. This sealing element can be in the form of a paste or a solid. If solid, the sealing element is designed, for example, as a sealing tape. The sealing element can be made of a fiberglass material, for instance. Other materials are, of course, also conceivable. The sealing element seals the adjacent plate segments of a panel against each other.

[0029] At least one panel can be part of a wall or wall element. If the installation kit includes multiple panels, all panels can be part of a wall or wall element.

[0030] At least one panel can be formed by the wall. In that case, the panel or panels constitute the wall itself.

[0031] The installation kit may include a mounting plate, preferably made of sheet metal, for mounting the fire damper to a wall. If the installation kit includes multiple plates, the mounting plate can, for example, be positioned against the free outer surface of the plate that is furthest from the wall when installed. Of course, other mounting plate configurations are also possible. For instance, the mounting plate can also be positioned between two plates.

[0032] The following section explains exemplary embodiments of the invention illustrated in the drawings. The drawings show: Fig. 1 a slanted side view of a fire damper according to the invention with a round housing, Fig. 2 a slanted side view of a first embodiment of a mounting kit comprising a plate consisting of two plate segments, Fig. 3 a detailed view of one of the two plate segments according to Fig. 2 Fig. 4 shows a detailed view of one half of a second embodiment of a mounting kit comprising two plates, each consisting of two plate segments, in the unmounted state; Fig. 5 shows a detailed view of one half of a third embodiment of a mounting kit comprising three plates, each consisting of two plate segments, in the unmounted state; Fig. 6 shows a detailed view of one half of a fourth embodiment of a mounting kit comprising three plates, each consisting of two plate segments, in the unmounted state; Fig. 7 shows an oblique side view of a fifth embodiment of a mounting kit comprising five plates, each consisting of two plate segments (without housing).Fig. 8 shows an oblique side view of a sixth embodiment of an installation kit for a fire damper according to the invention, comprising a rectangular housing and several plates, each consisting of four plate segments, in the uninstalled state, and Fig. 9 shows an oblique side view of a seventh embodiment of an installation kit comprising a plate consisting of two plate segments, wherein the connecting elements are aligned parallel to the flow direction.

[0033] In all figures, identical reference symbols are used for identical or similar components.

[0034] Fig. 1 Figure 1 shows an embodiment of a fire damper 1 according to the invention with a housing 2. Fig. 1 Neither the butterfly valve, which is pivotably mounted around a pivot axis in the housing 2, nor the other components of the fire damper 1, such as the drive mechanism, the return spring, any actuator, or the like, are shown. A gaseous medium flows in the housing in the direction of flow 3. Naturally, the gaseous medium can also flow in the opposite direction. The housing 2 is surrounded on the outside by a mounting kit 4.

[0035] The Fig. 1 bis 9 Figure 1 shows exemplary embodiments of mounting kits 4. Each mounting kit 4 comprises at least one plate 5. Each plate 5 is designed to form a recess 16 for receiving the housing 2. In the installed state, each plate 5 preferably rests against the outside of the housing 2. Each plate 5 has two plate surfaces 8 connected to each other by an outwardly facing circumferential end surface 6 and by a circumferential contact surface 7 forming the recess 16. The plate 5 can be attached from the outside around the housing 2. The installed state is shown in Fig. 1 As shown. At least one plate 5 consists of a material that includes wood and / or a wood-based material, or consists entirely of wood or a wood-based material.

[0036] In the Fig. 2 bis 7 and 9In the illustrated embodiments, each plate 5 is divided into two plate segments 9. The plate segments 9 are each designed such that the entirety of all plate segments 9, i.e., two plate segments 9, of the respective plate 5 form the recess 16 for receiving the housing 2. Thus, each plate segment 9 can be attached laterally from the outside, i.e., in a radial direction, around the housing 2. The two plate segments 9 of a plate 5 touch each other in the area of ​​their two abutting edges 10 when attached. Two contacting abutting edges 10 of the two plate segments 9 that touch each other in the attached state each form a pair. For example, in Fig. 2 Since plate 5 consists of two plate segments 9, plate 5 has a total of two pairs.

[0037] In the Fig. 2 and 3In the illustrated embodiments, the contacting butt edges 10 of the plate segments 9 of a plate 5, which touch each other in the installed state, each have two butt surface surfaces 12. The two butt surface surfaces 12 of each butt edge 10 are offset from each other. The interacting butt edges 10 of a pair are designed such that the two butt surface surfaces 12 of one butt edge 10 and the two butt surface surfaces 12 of the other butt edge 10 of a pair are configured such that all butt surface surfaces 12 of the respective pair of two contacting butt edges 10 touch in the installed state. Thus, in the assembled state, the installation kit 4 completely surrounds the housing 2.

[0038] In Fig. 2 The plate segments 9 of plate 5, which touch each other in the installed state, are directly connected by means of four connecting elements 11. The connecting elements 11 are arranged such that they connect the two plate segments 9 of plate 5 outside the housing 2. The connecting element 11 is designed as a threaded rod. However, other variants are also conceivable, such as a screw, a nail, or the like.

[0039] Fig. 3 shows a detailed view of a plate segment 9 of the installation kit 4 of the item according to Fig. 2 again in the unattached state. The plate segment 9 has a total of two butt edges 10. Each butt edge 10 has two butt surface areas 12. The butt surface areas 12 of each butt edge 10 are offset from each other. The plate segment 9 is manufactured from a single piece.

[0040] The Fig. 4 bis 6 Further embodiments of the arrangement of plate segments 9 to form a mounting kit 4 are shown. During the in Fig. 3 The installation kit 4 shown consists of a plate 5, is in Fig. 4 One variant is shown in which the installation kit 4 comprises two plates 5, each consisting of two plate segments 9. The plates 5 have different thicknesses. Of course, plates 5 of the same thickness are also possible.

[0041] In the Fig. 5 and 6 Variants are shown in which the installation kit 4 comprises three plates 5, each consisting of two plate segments 9. In the illustrated embodiments, the plates 5 have different thicknesses. Both the order of the arrangement of the plates 5 and the choice of their thickness are arbitrary.

[0042] The in Fig. 4 bis 6 The illustrated installation kits 4 comprise several plates 5 arranged adjacent to one another. As the figures show, adjacent plates 5 rest against each other at their surface 8, with the end faces 6 and the contact surfaces 7 running parallel to each other. In the illustrated embodiments, the end face 6 of each plate 5 is flush with the end face 6 of each adjacent plate 5. The contact surface 7 of each plate 5 is flush with the contact surface 7 of the adjacent plate 5.

[0043] For example, in the Fig. 4 bis 6 In the illustrated embodiments, the butt edges 10 of adjacent plate segments 9 are not aligned when viewed in the direction of flow. For example, in Fig. 5 The left butt edge 10 of the rear plate segment 9 extends beyond the adjacent butt edge 10 of the adjacent (middle) plate segment 9 and beyond the butt edge 10 of the front plate segment 9. The butt edges 10 of the middle plate segment 9 and the front plate segment 9 are aligned. In contrast, the opposite side has a reversed arrangement. On the opposite side, the adjacent butt edges 10 of the front plate segment 9 and the adjacent (middle) plate segment 9 are flush, i.e., aligned, and extend beyond the adjacent butt edge 10 of the rear plate segment 9.

[0044] In the Fig. 5 and 6 Three adjacent plate segments 9 of neighboring plates 5 are joined to form a block 13 before the mounting kit 4 is attached to the housing 2. For the connection, in Fig. 5 Four connecting elements 11, which are, for example, screws, are shown. The block 13 consists of three plate segments 9 of three adjacent plates 5, each plate segment 9 forming the corresponding half of a plate 5. The three further plate segments 9 of the other half of the installation kit 4, not shown, are preferably also connected as a block 13, so that the two blocks 13 are then placed against the housing 2 from the outside in such a way that the corresponding butt edges 10 touch. The blocks 13 are then secured by a suitable fixing, for example by the one shown. Fig. 2 The connecting elements 11 shown are connected to each other.

[0045] In Fig. 5 It is also shown that the three adjacent plate segments 9 of neighboring plates 5 are connected to form a block 13 by means of at least one connecting element 11. The connecting element 11 connecting the three adjacent plate segments 9 is aligned parallel to the central axis of the housing 2.

[0046] Fig. 7 Figure 1 shows an embodiment of a mounting kit 4 in a round design comprising five plates 5. The five plates 5 are each divided into two plate segments 9. The butt edges 10 of the five plates 5 are not aligned. Specifically, the two pairs of contacting butt edges 10 of the second plate 5 from the left are offset from the adjacent pairs of contacting butt edges 10 of the adjacent, middle plate 5. Rather, only the butt edges 10 of the two leftmost plates 5 and the butt edges 10 of the three rightmost plates 5 are aligned. The plates 5 are arranged adjacent to each other and their plate surfaces 8 abut each other, with the end faces 6 and the contact surfaces 7 running parallel to each other. A flat stiffening plate 14 is arranged between the second and third plates 5 from the left. The stiffening plate 14 can, for example, be a sheet metal plate.

[0047] The stiffening plate 14 rests against the plate surfaces 8 of the two adjacent plates 5. This improves the stability of the installation kit 4.

[0048] Fig. 8 Figure 4 shows an embodiment of the installation kit 4 in a rectangular design for a fire damper 1 with a rectangular housing 2, wherein the installation kit 4 comprises three plates 5. Each of the three plates 5 is subdivided into four plate segments 9. Each plate segment 9 has a rectangular shape and is strip-shaped. The plates 5 are arranged adjacent to each other and rest against the plate surfaces 8. While the three right-hand plates 5 have the same dimensions and thus not only the contact surfaces 7 but also the end faces 6 are aligned, the left-hand plate 5 has a larger dimension, so that the end faces 6 of the left-hand plate 5 protrude compared to the aligned end faces 6 of the three right-hand plates 5. Fig. 8 As can be seen, the butt edges of 10 adjacent plates 5 are not aligned, but are offset from each other.

[0049] In the exemplary embodiment according to Fig. 7 A sealing element 15 is also arranged at the butt joints 10. The sealing element 15 can, for example, be made of a fiberglass material. The sealing element 15 seals the plate segments 9 against each other.

[0050] By selecting the number of panels (5) or the thickness of a panel (5), the installation kit (4) can be optimally adapted to the specific building conditions. If the installation kit (4) is installed in a wall opening in a wall made of, for example, wood or a wood-based material, or which incorporates wood and / or a wood-based material, the installation kit (4) can be adjusted to the thickness of the wall in this way.

[0051] Fig. 9 Figure 5 shows an oblique side view of a mounting kit 4 comprising a plate 5 consisting of two plate segments 9. Each pair of contacting butt edges 10 of the two plate segments 9 of the plate 5, which touch each other in the installed state, forms a pair. The plate 5 has a total of two pairs. Each butt edge 10 of a pair has two butt surface areas 12, the two butt surface areas 12 of each butt edge 10 being offset from each other. The butt edges 10 of the other plate segment 9 of this pair are designed such that all butt surface areas 12 of the two butt edges 10 touch in the installed state. In contrast to the embodiment according to Figure 5, the two butt edges 10 of the other plate segment 9 of this pair are designed such that all butt surface areas 12 of the two butt edges 10 touch each other in the installed state. Fig. 2 The connecting elements 11 are aligned parallel to the direction of flow and encompass the offset areas of both plate segments 9.

Claims

1. Fire damper (1) with a housing (2) for a damper pivotable around a pivot axis therein and with a kit (4) surrounding the outside of the housing (2), wherein the kit (4) comprises at least one plate (5), wherein each plate (5) is configured in such a way that it forms an opening (16) for receiving the housing (2), wherein each plate (5) has two plate surfaces (8) connected to one another both by an outward-facing circumferential end face (6) and by a circumferential contact surface (7) forming the opening (16), and wherein each plate (5) can be fitted around the housing (2) from the outside, characterised in that at least one plate (5), preferably all plates (5), consist(s) of a material comprising wood and / or a wood-based material, or that at least one plate (5), preferably all plates (5), consist(s) entirely of wood or a wood-based material.

2. Fire damper (1) according to the preceding claim, characterised in that at least one plate (5) has, at least in part, a fire-resistant coating.

3. Fire damper (1) according to one of the preceding claims, characterised in that the kit (4) comprises at least two, preferably three, plates (5) arranged adjacent to one another.

4. Fire damper (1) according to any of the preceding claims, characterised in that at least one of the plates (5) is made of a non-combustible material.

5. Fire damper (1) according to any of claims 1 to 3, characterised in that all plates (5) are made of the same material.

6. Fire damper (1) according to any of the preceding claims, characterised in that at least one plate (5), preferably all plates (5), has (have) a thickness of between 10 mm and 50 mm, preferably between 15 mm and 30 mm.

7. Fire damper (1) according to any of the preceding claims, characterised in that the kit (4) comprises a stiffening plate (14), preferably made of sheet metal.

8. Fire damper (1) according to any of the preceding claims, characterised in that at least one plate (5), preferably each plate (5), is formed from at least two plate segments (9) such that the totality of all plate segments (9) of the respective plate (5) forms the opening (16) for receiving the housing (2), wherein each plate segment (9) can be fitted around the housing (2) from the outside, in particular in a radial direction, and wherein, in the fitted state, the associated plate segments (9) of the at least one plate (5), preferably of each plate (5), touch the other plate segment (9) or the other plate segments (9) at two abutting edges (10).

9. Fire damper (1) according to the preceding claim, characterised in that at least two plate segments (9) of at least one plate (5), which are in contact with one another in the fitted state are connected directly or indirectly by means of at least one connecting element (11).

10. Fire damper (1) according to the preceding claim, characterised in that at least one connecting element (11) is configured as a screw, a nail or a threaded rod.

11. Fire damper (1) according to any of claims 8 to 10, characterised in that, in at least one pair of two contacting abutting edges (10) of two plate segments (9) of a plate (5) which touch one another in the fitted state, each of these abutting edges (10) has two abutting edge surfaces (12), wherein the two abutting edge surfaces (12) of the abutting edge (10) of the one plate segment (9) are offset relative to one another, and wherein the abutting edge (10) of the other plate segment (9) is configured such that all abutting edge surfaces (12) of the two abutting edges (10) touch one another in the fitted state.

12. Fire damper (1) according to any of claims 8 to 11, characterised in that at least one pair of two contacting abutting edges (10) of a plate is arranged offset relative to the adjacent pair of two contacting abutting edges (10) of at least one adjacent plate.

13. Fire damper (1) according to any of claims 8 to 12, characterised in that at least two, preferably three, juxtaposed plate segments (9) of adjacent plates (5) are connected to form a block (13) before being fitted onto the housing (2).

14. Fire damper (1) according to the preceding claim, characterised in that the at least two, preferably three, juxtaposed plate segments (9) of adjacent plates (5) are connected by means of at least one connecting element (11) to form a block (13).

15. Fire damper (1) according to any of claims 8 to 14, characterised in that a sealing element (15) is arranged on at least one abutting edge (10).

16. Fire damper (1) according to any of the preceding claims, characterised in that at least one of the plates (5) forms part of a wall or a wall element.

17. Fire damper (1) according to the preceding claim, characterised in that at least one plate (5) is formed by the wall.

18. Fire damper (1) according to any of the preceding claims, characterised in that the kit (4) comprises a mounting plate, preferably made of sheet metal, for mounting the fire damper (1) on a wall.

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