DK2910282T3

DK2910282T3 - fire dampers

Info

Publication number: DK2910282T3
Application number: DK14155828.8T
Authority: DK
Inventors: Martin Fels; Martin Mosters; Andreas Strauss; Rüdiger Gurny
Original assignee: Trox Gmbh Geb
Priority date: 2014-02-19
Filing date: 2014-02-19
Publication date: 2018-09-03
Also published as: EP2910282A1; EP2910283A1; ES2685818T3; ES2686646T3; EP2910283B1; PL2910283T3; EP2910282B1; DK2910283T3; PL2910282T3

Description

Description [0001] The invention relates to a fire protection flap, with a housing, and a blocking flap located therein, mounted in particular centrally in relation to the housing cross-section and such as to be capable of pivoting about a pivot axis between an open position and a closed position, wherein for the pivoting, i.e. for the tensioning of the blocking flap out of its closed position against the resetting force into its open position, an actuation handle is provided, interacting directly or indirectly with the blocking flap and arranged on the outside of the housing, capable of being rotated about an rotation axle assigned to it, wherein at least one stop is provided, at which the blocking flap is in contact, directly or indirectly, in its open position, and wherein the fire protection flap comprises an actuation device, which can be brought into a fixing position and which can be actuated by heat or the like, for example in the event of fire, and can therefore be relocated automatically into a release position, and wherein the actuation handle, and therefore the blocking flap connected to it, in the open position, can be fixed into a position which corresponds to the open position of the blocking flap, against a resetting force, by means of the actuation device which is located in its fixing position, and can be pivoted out of this fixed position, for example in the event of a fire, after the actuation of the actuation device and the consequent change of the actuation device into its release position, due to the resetting force, into a second position corresponding to the closed position of the blocking flap. From DE 20 2012 104 995 U1, a fire protection flap is known, with a housing and with a blocking flap mounted therein mounted such as to pivot about a pivot axis. From DE 42 34 800 A1 (basis for the preamble of claim 1), a similar fire protection flap is known. In order to keep pressure losses and undesirable noise development as low as possible, the blocking flap in the open position is to be aligned as far as possible parallel to the direction of flow. In this respect, the stop arranged in the blocking flap is adjustable, in order to be able to compensate for tolerance fluctuations, such as may occur inside the transfer mechanism. Locally, the blocking flap is moved into its open position, and following this the stop is fixed correspondingly in this position. Disadvantageous in this situation is the fact that it is not guaranteed in this way that the blocking flap is also in fact aligned parallel to the direction of flow.

[0002] The object of the invention is to avoid the aforesaid disadvantages, and to provide a fire protection flap with which, in the open state, the blocking flap is aligned as far as possible parallel to the direction of flow.

[0003] This object is solved by the actuation handle being configured in such a way, by its material or by an additional element or by an intermediate element arranged between the actuation handle and the rotation axle, that a further displacement is allowed, in particular rotation, of the part of the actuation handle which interacts with the actuation device in the same direction of rotation, by overcoming an additional force, in particular resetting force, wherein the additional force is greater than the resetting force to be applied in order to displace the blocking flap out of its closed position into its open position.

[0004] The arrangement according to the invention allows for the stop to be mounted, which can already be carried out by the manufacturers, at the required point on the inner side of the housing in such a way that the blocking flap in the contact state is in every case aligned parallel to the direction of flow. This is made possible by the material of the actuation handle, or by an additional element, or by an intermediate element arranged between the actuation handle and the rotation axle.

[0005] If it is intended that the blocking flap should be displaced by means of the actuation handle out of its closed position into its open position, the resetting force must first be overcome by rotating the actuation handle, until the blocking flap comes in contact with the stop.

[0006] In the event that, in this position, the actuation handle cannot yet be brought into engagement with the actuation device, the actuation handle is now displaced further in the same direction of rotation, wherein, during the further displacement, an addition force must be overcome, until the actuation handle has reached the desired position, i.e. until it can be brought into engagement with the actuation device. This additional force must be applied on the basis of the material of the actuation handle, or on the basis of the additional element, or on the basis of the additional element arranged between the actuation handle and the rotation axle. The overcoming of the additional force first takes place when the blocking flap comes in contact with the stop.

[0007] By way of the arrangement according to the invention, it is ensured that the blocking flap, even in the event of manufacturing tolerances such as may occur, for example, with transfer mechanisms consisting of a plurality of components, in the opening position is, on the one hand, aligned parallel to the direction of flow, and, on the other, is in contact with the stop.

[0008] The actuation device can be, for example, a bolt, guided in a tube, one end of which projects into the housing, and the other end of which ends in a cutout recess in the region of the housing wall. The bolt is tensioned against a resetting force produced by a spring, and fixed in the tensioned state by means of a fusible link located in the housing. In the open position of the blocking flap, it is possible, for example, for a projection piece to engage into the cut-out recess in the region of the housing wall, arranged on the rear side at the actuation handle. In the event of a fire, the fusible link melts, and, as a result of this, the bolt is automatically displaced by the spring to a certain extent outwards. This causes the projection part of the actuation handle to be pushed out of the cut-out recess, and the blocking flap, and therefore also the actuation handle, to be pivoted into the closed position.

[0009] The pivot axis of the blocking flap and the rotation axle of the actuation handle can be configured as concentric or flush with one another, in particular as one piece.

[0010] The actuation handle can be connected in positive fit with the rotation axle, wherein the positive fit has a degree of play, and the use of this play is not yet allowed by the additional force. The rotation axle can, for example, exhibit a quadrilateral cross-section. With such a configuration, the actuation handle preferably has a cut-out recess with four corners, wherein each edge section of the recess is broadened between the middle and a corner, such that the actuation handle has a degree of play in relation to rotation axle.

[0011] As intermediate element, a slip clutch can be provided, for example.

[0012] As an alternative, the intermediate element can comprise at least one spring, of which one end takes effect indirectly or directly on the rotation axle, and of which the other end takes effect indirectly or directly on the actuation handle.

[0013] It is advantageous if the intermediate element comprises at least one bearing surface, a corresponding counter-bearing, and at least one spring, wherein the rotation axle comprises at least one bearing surface, projecting laterally in relation to the rotation axle and facing towards the rotation axle, on which the one end of the spring is supported, the spring being configured as a pressure spring and aligned tangentially in relation to the rotation axle, and the actuation handle comprises the corresponding counter-bearing for the other end of the spring. The bearing surface can be arranged torsionally resistant on the rotation axle, while the actuation handle has a degree of play in relation to the rotation axle. The counter-bearing can also be a part of a recess which is provided at the actuation handle, and in which the respective spring is mounted.

[0014] In this situation an element can be provided, preferably covering the actuation handle from the outside in the region of the rotation axle and connected torsionally resistant to the rotation axle, which comprises at least one side part, forming at least one bearing surface. The bearing surface serves as a bearing for a spring.

[0015] The intermediate element can comprise at least one region configured as spring-loaded, wherein the intermediate element is arranged torsionally resistant on the rotation axle, and the region configured as spring loaded takes effect, indirectly or directly, in particular laterally, on the actuation handle. With this exemplary embodiment, the actuation handle has a degree of play in relation to the rotation axle. An inverse arrangement is of course also possible, with which the actuation handle is arranged torsionally resistant on the rotation axle and the intermediate element has a degree of play in relation to the rotation axle.

[0016] It is also possible for the intermediate element to be configured as an element which allows for torsion, which on the one hand is connected torsionally resistant to the rotation axle and, on the other, is connected torsionally resistant to the actuation handle. Such an intermediate element is configured as twisting under spring force.

[0017] With a preferred embodiment of the invention, the blocking flap, which in the open position is in contact with at least one stop, is aligned parallel to the direction of flow.

[0018] To release or fix the actuation handle in relation to the actuation device, the actuation handle can be raised slightly against a resetting force in relation to the housing, at least in the region of its free end in relation to the housing.

[0019] In this situation, at least one stop can be arranged on the inner side of the housing. As a stop, for example, an angle element can be located on the inner side of the housing.

[0020] It is also possible for a transfer mechanism to be provided in the housing, engaging at the blocking flap, and that at least one stop is arranged at the blocking flap and/or at the transfer mechanism, preferably on the side of the transfer element facing towards the blocking flap.

[0021] The exemplary embodiments of the invention represented in the figures are explained in greater detail hereinafter. The figures show:

Fig. 1a-g A first exemplary embodiment of a fire protection flap according to the invention,

Fig. 2a-g a second exemplary embodiment of a fire protection flap according to the invention,

Fig. 3a-g a third exemplary embodiment of a fire protection flap according to the invention, and

Fig. 4a-h a fourth exemplary embodiment of a fire protection flap according to the invention.

[0022] In all the figures, concordant reference numbers are used for components which are the same or of the same type.

[0023] In Figs. 1 to 4, a total of four embodiments of a fire protection flap according to the invention are represented.

[0024] Each fire protection flap comprises a housing 1, with a blocking flap 2 mounted therein, in the middle in relation to the housing cross-section and able to pivot around a pivot axle 23 between an open position and a closed position.

[0025] In order to pivot the blocking flap 2 out of its closed position, against the resetting force produced by a helical spring 3, into its open position, an actuation handle 4 is provided on the outside of the housing 1, mounted such as to rotate about a rotation axle 5. The actuation handle 4 has at the rear side, in the region of its free end, a projection piece 6, projecting on the rear side. In the exemplary embodiment shown, the helical spring 3 is guided around the rotation axle 5.

[0026] In the exemplary embodiments represented, the pivot axle 23 of the blocking flap 2 and the rotation axle 5 of the actuation handle 4 represent separate components. In this situation, the blocking flap 2 is connected to the rotation axle 5 by means of a transfer mechanism 24, arranged in the interior of the hous- ing 1, not represented in any greater detail. In the exemplary embodiments represented, the transfer mechanism 24 comprises a rotary bearing 25, provided at the blocking flap 2, as well as a coupling rod 26, connected indirectly or directly to the rotation axle 5.

[0027] Provided in the housing 1 is a stop 7, at which the blocking flap 2 is in direct contact when in its open position. In the exemplary embodiments represented, the stop 7 is arranged in each case on the inner side of the housing 1. It is, however, also entirely possible for the stop 7 to be arranged at the blocking flap 2 or at the transfer mechanism 24, for example on the side of the coupling rod 26 facing towards the blocking flap 2. In the open position of the blocking flap 2, the blocking flap 2 and the coupling rod 26 are aligned approximately parallel, wherein the stop 7 prevents a further pivoting of the blocking flap 2 beyond the open position.

[0028] In addition, an actuation device 8 is provided, not represented in greater detail. The actuation device 8 comprises a cut-out recess 9, arranged in the region of the housing wall, in which a bolt is guided, not represented in greater detail. In the open position, i.e. in the fixing position of the actuation handle 4, the projection piece 6 is located in the recess 9. In the event of a fire, the bolt is displaced to a certain extent outwards, out of the recess 9, as a result of which the projection piece 6 of the actuation handle 4 is pushed out of the recess 9, and the blocking flap 2, and therefore also the actuation handle 4, are pivoted by the resetting force produced by the helical spring 3 into the closed position, i.e. into the release position of the actuation handle 4.

[0029] In addition, a blocking element 10, in the form of a plate screwed in position, is provided on the outside of the housing 1. The free end is arranged at a distance interval in relation to the housing 1. The blocking element 10, according to Fig. 1 e, also comprises a longitudinal hole 11. With the exemplary embodiment according to Fig. 1, in the closed position of the blocking flap 2, the projection piece 6 of the actuation handle 4 projects into the longitudinal hole 11.

[0030] If it is now intended that the blocking flap 2 should be displaced out of its closed position into its open position, against the resetting force created by the helical spring, the actuation handle 4 must be raised, in the region of its free end, initially slightly in relation to the housing 1, against the direction of the arrow 12. As a result, the actuation handle 4 is displaced out of the longitudinal hole 11, and, on rotation in the direction of the arrow 13, can be moved over the blocking element 10, such that the actuation handle can be rotated in the direction of the arrow 13.

[0031] Represented in Figs. 1a to 1g is a first exemplary embodiment, in which an intermediate element 14 is arranged between the actuation handle 4 and the rotation axle 5. The intermediate element 14, which is arranged torsionally resistant in relation to the rotation axle 5, comprises in the exemplary embodiment represented, a total of two springs 15, wherein one end of each spring 15 takes effect indirectly on the rotation axis 5, and the other end takes effect directly on the actuation handle 4.

[0032] For this purpose, an element 16 is provided, covering the actuation handle 4 from the outside in the region of the rotation axle 5, connected torsionally resistant to the rotation axle 5, and which comprises two side parts 17 arranged at a distance from one another. Each side part 17 forms two bearing surfaces 18. The other end of each spring 15 takes effect laterally on the corresponding counter-bearing 19 of the actuation handle 4. As can be seen in particular from Fig. 1c, for the fixing of the corresponding spring 15, each counter-bearing 19 is provided in a recess 20 of the actuation handle 4.

[0033] In the position represented in Figs. 1b to 1 g, the blocking flap 2 is already in its open position, since it already has contact with the stop 7. However, the projection piece 6 of the actuation handle 4 still cannot yet interact with the recess 9 of the actuation device 8. In order to be able to cover the remaining distance, the actuation handle 4 is rotated further in the same direction of rotation (arrow 13), overcoming the additional force exerted by the two springs 15. This additional force is greater than the force which is to be applied for a displacement of the blocking flap 2 out of its closed position until the blocking flap 2 comes in contact with the stop 7.

[0034] The further displacement of the actuation handle 4 in relation to the rotation axle 5 is therefore possible, since the actuation handle 4 is connected in positive fit to the rotation axle 5, wherein, however, the positive fit connection has a degree of play, and the use of this play by the additional force is not yet released until the blocking flap 2 reaches the stop 7.

[0035] For this purpose, the rotation axle 5 exhibits a quadrilateral cross-section. Provided in the actuation handle 4 itself is a recess, likewise with four corners. Each edge section 21 of the recess, however, is widened between the middle and a corner by the angle a, such that the actuation handle 4 has a degree of play in relation to the rotation axle 5.

[0036] In Fig. 1 f, the projection piece 6 of the actuation handle 4 is fixed in the recess 9 of the actuation device 8. It can clearly be seen that the alignment of the intermediate element 14 in relation to the actuation handle 4 according to Fig. 1c has changed in relation to the alignment according to Fig. 1f. Fig. 1c represents an enlargement of the corresponding region from Fig. 1 d, wherein the element 16 is represented sectionally.

[0037] Represented in Figs. 2a to 2g is a second exemplary embodiment of an intermediate element 14. The intermediate element 14 is arranged torsionally resistant on the rotation axle 5, and comprises two regions 22, configured as spring loaded and spaced at a distance from one another, wherein each region 22, configured as spring loaded, takes effect laterally on the actuation handle 4 arranged between them. The function mode is identical to that of the exemplary embodiment according to Fig. 1.

[0038] In Fig. 2d, the blocking flap 2 is already in contact with the stop 7, but the projection piece 6 still cannot yet interact with the recess 9 of the actuation device 8. The alignment of the intermediate element 14 in relation to the actuation handle 4 in this position is represented in Figs. 2c and 2d.

[0039] In order for the projection piece 6 to be able to interact with the actuation device 8, as represented in Fig. 2f, the actuation handle 4, overcoming the additional force which is exerted by the two regions 22 configured as spring loaded, must be rotated further. The alignment represented in Fig. 2f then comes into being between the intermediate element 14 in relation to the actuation handle 4.

[0040] Represented in Figs. 3a to 3g is a third exemplary embodiment, which exhibits the same function mode. In this case, as the intermediate element 14, an element is provided which allows for torsion, consisting, for example, of plastic, one end of which is connected torsionally resistant to the rotation axle 5, and the other end of which is connected torisionally resistant to the actuation handle 4. The remaining structural configuration, for example with regard to the realisation of the play between the actuation handle 4 and rotation axle 5, is essentially the same as that of the exemplary embodiments described heretofore.

[0041] Represented in Figs. 4a to 4h is a fourth exemplary embodiment. Here, the intermediate element 14 is again arranged torsionally resistant in relation to the rotation axle 5. The intermediate element 14 is made of plastic, for example. It comprises a region 22, configured as spring loaded, which takes effect laterally on the actuation handle 4. The actuation handle 4 is in turn connected in a positive fit in relation to the rotation axle 5 in such a way that the positive fit has a degree of play, and the use of this play by the additional force exerted by the spring loaded region 22 is released.

[0042] It can easily be seen that many variations are possible within the framework of the invention, such as it is defined by the appended claims, all of which are intended to be included within the scope of protection.

Claims

1. Brandspjæld med et hus (1) og en spærreklap (2), som er svingbart lejret om en svingaksel (23) i huset, især i midten i forhold til husets tværsnit, til svinging mellem en åben stilling og en lukket stilling, hvori der til svingning, dvs. til spænding, af spærreklappen (2) findes et betjeningsgreb (4), som kan roteres om en dertil knyttet drejeaksel (5) og er arrangeret på husets (1) yderside og samvirker direkte eller indirekte med spærreklappen (2) for at bevæge den ud af den lukkede stilling mod en tilbageføringskraft til dens åbne stilling, hvori der er tilvejebragt mindst et anslag (7), med hvilket spærreklappen (2) er i indirekte eller direkte kontakt i sin åbne stilling, og hvori brandspjældet omfatter en udløserindretning (8), der kan bringes i en fikseringsposition og udløses af varme og derfor kan tilbagestilles automatisk i en frigivelsesposition, og hvori betjeningsgrebet (4) og den dermed forbundne spærreklap (2) i den åbne stilling kan fikseres mod en tilbageføringskraft ved hjælp af udløserindretningen (8), som befinder sig i sin fikserede position i en stilling, som svarer til spærreklappens (2) åbne stilling, og som kan svinges ud af denne fikserede position efter udløsning af udløserindretningen (8) og den deraf følgende ændring af udløserindretningen (8) til dens frigivelsesposition via tilbageføringskraften til en anden position svarende til spærreklappens (2) lukkede stilling, kendetegnet ved, at betjeningsgrebet (4) ved sit materiale eller ved et supplerende element eller med et mellemelement (14) arrangeret mellem betjeningsgrebet (4) og drejeakslen (5) er udformet på sådan måde, at en yderligere bevægelse, især drejning, tillades af den del af betjeningsgrebet (4), der samvirker med udløserindretningen (8), i samme retning (pil 13), idet den overvinder en yderligere kraft, især en tilbageføringskraft, hvori den yderligere kraft er større end tilbageføringskraften, som skal påtrykkes for at bevæge spærreklappen (2) ud af dens lukkede stilling til dens åbne stilling.A fire damper having a housing (1) and a locking flap (2) pivotally mounted about a pivot shaft (23) in the housing, especially in the center relative to the cross-section of the housing, for pivoting between an open position and a closed position, wherein there for oscillation, i.e. for tensioning, of the locking flap (2) there is an operating handle (4) which can be rotated about an associated pivot shaft (5) and is arranged on the outside of the housing (1) and cooperates directly or indirectly with the locking flap (2) to move it out of the closed position against a return force to its open position, wherein at least one stop (7) is provided, with which the shut-off valve (2) is in indirect or direct contact in its open position, and wherein the fire damper comprises a trigger device (8), which can be brought into a fixing position and triggered by heat and therefore can be automatically reset to a release position and wherein the control handle (4) and the associated locking flap (2) in the open position can be fixed against a return force by the triggering device (8), which is in its fixed position in a position corresponding to the open position of the locking tab (2) and which can be swung out of this fixed position upon release of the trigger the device (8) and the consequent change of the trigger device (8) to its release position via the return force to another position corresponding to the closed position of the locking flap (2), characterized in that the control handle (4) by its material or by a supplementary element or with an intermediate element (14) arranged between the control handle (4) and the pivot shaft (5) is designed such that a further movement, in particular rotation, is allowed by the part of the control handle (4) cooperating with the trigger device (8) in the same direction (arrow 13), overcoming an additional force, especially a return force, in which the additional force is greater than the return force to be applied to move the locking flap (2) out of its closed position to its open position.

2. Brandspjæld ifølge det foregående krav, kendetegnet ved, at spærreklappens (2) svingaksel (23) og betjeningsgrebets (4) drejeaksel (5) er udformet koncentriske eller flugtende med hinanden, især i ét stykke.Fire damper according to the preceding claim, characterized in that the pivot shaft (23) of the locking flap (2) and the pivot shaft (5) of the locking lever (4) are designed concentric or flush with each other, especially in one piece.

3. Brandspjæld ifølge et af de foregående krav, kendetegnet ved, at betjeningsgrebet (4) er forbundet med drejeakslen (5) med formsluttende pasning, hvor den formsluttende pasning har et vist spillerum, og udnyttelsen af dette spillerum endnu ikke frigives af den yderligere kraft.Fire damper according to one of the preceding claims, characterized in that the operating handle (4) is connected to the rotary shaft (5) with a molding fit, wherein the molding fit has a certain clearance and the utilization of this clearance is not yet released by the additional force. .

4. Brandspjæld ifølge et af de foregående krav, kendetegnet ved, at en skrid-kobling (14) er tilvejebragt som mellemelementet.Fire damper according to one of the preceding claims, characterized in that a skid coupling (14) is provided as the intermediate element.

5. Brandspjæld ifølge et af de foregående krav 1 til 3, kendetegnet ved, at mellemelementet (14) omfatter mindst en fjeder (15), af hvilken en ende virker direkte eller indirekte på drejakslen (5), og den anden ende virker direkte eller indirekte på betjeningsgrebet (4).Fire damper according to one of the preceding claims 1 to 3, characterized in that the intermediate element (14) comprises at least one spring (15), one end of which acts directly or indirectly on the pivot shaft (5) and the other end acts directly or indirectly. indirectly on the control handle (4).

6. Brandspjæld ifølge et af de foregående krav, kendetegnet ved, at mellemelementet (14) omfatter mindst en lejeflade (18), et tilsvarende modleje (19) såvel mindst en fjeder (15), hvori drejeakslen (5) omfatter mindst en lejeflade (18), der udrager til siden overfor drejeakslen (5) og vender mod drejeakslen (5), og på hvilken støttes en ende af fjederen (15), fortrinsvis udformet som en trykfjeder og rettet tangentielt i forhold til drejeakslen (5), og betjeningsgrebet (4) omfatter det tilsvarende modleje (19) for fjederens (15) anden ende.Fire damper according to one of the preceding claims, characterized in that the intermediate element (14) comprises at least one bearing surface (18), a corresponding counter bearing (19) as well as at least one spring (15), wherein the turning shaft (5) comprises at least one bearing surface ( 18) extending sideways opposite the pivot shaft (5) and facing the pivot shaft (5) and on which is supported an end of the spring (15), preferably configured as a compression spring and directed tangentially to the pivot shaft (5), and the operating handle (4) comprises the corresponding counter bearing (19) for the other end of the spring (15).

7. Brandspjæld ifølge et af de foregående krav, kendetegnet ved, at der findes et element (16), som fortrinsvis dækker betjeningsgrebet (4) udvendigt i dreje-akslens (5) område og forbundet med drejeakslen (5) på rotationsfast måde, og som omfatter mindst en sidedel (17), som danner mindst en lejeflade (18).Fire damper according to one of the preceding claims, characterized in that there is an element (16) which preferably covers the operating handle (4) externally in the region of the shaft (5) and connected to the pivot shaft (5) in a rotationally fixed manner, and which comprises at least one side portion (17) forming at least one bearing surface (18).

8. Brandspjæld ifølge et af de foregående krav 1-3, kendetegnet ved, at mellemelementet (14) har mindst et fjedrende område (22), hvor mellemelementet (14) er arrangeret rotationsfast på drejeakslen (5) og hvori det fjedrende område (22) direkte eller indirekte, især siderettet, virker på betjeningsgrebet (4).Fire damper according to one of the preceding claims 1-3, characterized in that the intermediate element (14) has at least one resilient region (22), wherein the intermediate element (14) is arranged rotationally fixed on the pivot shaft (5) and wherein the resilient region (22) ) directly or indirectly, especially the lateral direction, acts on the control handle (4).

9. Brandspjæld ifølge et af de foregående krav 1 til 3, kendetegnet ved, at mellemelementet (14) er udformet som et torsionselement, som på den ene side er forbundet rotationsfast til drejeakslen (5) og på den anden side rotationsfast til betjeningsgrebet (4).Fire damper according to one of the preceding claims 1 to 3, characterized in that the intermediate element (14) is formed as a torsion element which is connected rotationally to the pivot shaft (5) on the other hand and rotationally fixed to the operating handle (4). ).

10. Brandspjæld ifølge et af de foregående krav, kendetegnet ved, at spærreklappen (2), når den i den åbne stilling ligger an mod mindst et anslag (7), er rettet parallel med strømningsretningen.Fire damper according to one of the preceding claims, characterized in that, when in the open position, it engages at least one stop (7) in the open position, parallel to the direction of flow.

11. Brandspjæld ifølge et af de foregående krav, kendetegnet ved, at mindst et anslag (7) er arrangeret på husets (1) inderside.Fire damper according to one of the preceding claims, characterized in that at least one stop (7) is arranged on the inside of the housing (1).

12. Brandspjæld ifølge et af de foregående krav, kendetegnet ved, at der i huset (1) er tilvejebragt en overføringsmekanisme (24) til at gå i indgreb med spærreklappen (2), og at mindst et anslag (7) er arrangeret ved spærreklappen (2) og/eller ved overføringsmekanismen (24), fortrinsvis på den side af overføringsmekanismen (24), der vender mod spærreklappen (2).Fire damper according to one of the preceding claims, characterized in that in the housing (1) a transfer mechanism (24) is provided for engaging the locking flap (2) and at least one stop (7) is arranged at the locking flap. (2) and / or by the transfer mechanism (24), preferably on the side of the transfer mechanism (24) facing the locking flap (2).