EP4006242A1 - Fire prevention insert for a floor drain - Google Patents

Abstract

Fire protection insert (10) for a floor drain (40), comprising an insert element (12) which is designed in such a way that it sits in a fixed position in the floor drain when the fire protection insert is inserted into the floor drain, and a closure element (18 ) with a cover (20) and a plunger (22) extending from the cover into the insert element, the closure element between a release position, in which the cover releases an inlet opening of the floor drain, and a closed position, in which the cover opens the inlet opening of the closes the floor drain, is adjustable, the closure element being prestressed into the closed position, but being held in the release position counter to the prestressing by a securing element (28) arranged on an end (22b) of the plunger pointing away from the cover, the securing element being designed to to give way in case of fire, so that the movement of the Closure element is released into the closed position.

Description

The invention relates to a fire protection insert, in particular without sealing water, for a floor drain and a system made up of a floor drain and such a fire protection insert.

Floor drains are arranged, for example, in storey ceilings, on flat roofs or on a parking deck and are used to drain water. Floor drains form an opening in the ceiling that accommodates them and are therefore a weak point in the event of a fire. According to structural regulations, measures must be taken to prevent fire and smoke from spreading upwards through the floor drain, particularly from a room located below the floor drain.

Intumescents are known for floor drains with odor traps, which foam up due to the heat in the event of a fire and thus close the inlet, described for example in DE 10 2013 109 367 A1 and EP 1 640 518 A1 .

A floor drain without sealing water with a fire protection device is known, for example, from DE 10 2005 046 149 B4 . In this floor drain, a valve disk prestressed into a closed position is held at a distance from an inlet opening by means of spacers located above the inlet opening of the floor drain, with these spacers being shortened in the event of a fire and thus allowing the valve disk to move into a closed position for closing a drain connection.

Proceeding from this prior art, the object of the invention is to provide a fire protection insert for a floor drain that reacts more quickly in the event of a fire.

The invention solves the problem by a fire protection insert according to claim 1 and by a system according to claim 11. Advantageous configurations are the subject matter of the dependent claims, the description and the figures.

The fire protection insert according to the invention is intended and suitable for a floor drain, ie it can be used in a floor drain. The fire protection insert comprises an insert element which is designed in such a way that it sits in a fixed position in the floor drain when the fire protection insert is inserted into the floor drain, as well as a closure element which can be moved relative to the insert element and which has a cover and a closure element which extends from the cover into the insert element Has plunger. The closure element can be moved relative to the insert element in such a way that it can be adjusted between a release position, in which the cover of the closure element opens an inlet opening of the floor drain, and a closed position, in which the cover of the closure element closes the inlet opening of the floor drain. The closure element is biased into the closed position. In a normal state, i. H. without exposure to the high heat caused by a fire, however, a force acts against this pretension, so that the closure element is held in the release position. For this purpose, a securing element arranged on an end of the plunger pointing away from the cover is provided according to the invention. The securing element can in particular be a securing plate. According to the invention, the securing element is designed to yield in the event of a fire, so that the movement of the closure element into the closed position is released.

The system according to the invention of a floor drain and such a fire protection insert therefore provides that the fire protection insert is inserted into the floor drain so that the insert element is between the release position and the locking position is adjustable. The floor drain has an inlet opening for draining off surface water, into which the fire protection insert is inserted. The fire protection insert can be held at the inlet opening and in particular also at an adjoining pipe wall of the floor drain, as will be explained below. A drain pipe can be connected to the floor drain, for draining the surface water into a sewage system, for example. The fire protection insert is in particular a fire protection insert without sealing water.

In the fire protection insert according to the invention, the cover of the closure element closes the inlet opening of the floor drain in the closed position and thus prevents or reduces smoke, fire or heat from a fire taking place below the floor drain rising up through the floor drain into an area above it. The security element according to the invention reacts in particular to the high temperatures occurring as a result of the fire. For example, the fuse element can deform and/or melt. In this way, the securing element can become so soft that it can no longer apply sufficient counterforce to the prestressing of the closure element in the closed position, so that the plunger of the closure element is released. If the securing element is configured as a securing plate, the plunger can then pierce the securing plate. According to the invention, the securing element is arranged on an end of the plunger pointing away from the cover. The plunger can thus have a first end connected to the lid and a second end opposite the first end, the second end being the end pointing away from the lid. While the cover of the closure element is arranged above the inlet opening of the floor drain, at least in the release position, the end of the plunger pointing away from the cover is located relatively deep in the floor drain. The securing element arranged at this end is thus as close as possible to a space located below the floor drain. Because when there's a fire in the If fire, heat and smoke rise up through the pipes in the room below, they come into contact with the safety element at an early stage. The safety element can thus yield early and the fire protection unit can react to a fire early on. This is particular compared to the one mentioned at the outset DE 10 2005 046 149 B4 advantage, which can only react quite late to such a fire due to the spacers arranged above the inlet opening.

According to one embodiment, the security element can be designed in such a way that it softens and/or melts in the event of a fire, as mentioned. The securing element can thus clear the way for a movement of the plunger and thus of the entire closure element in the direction of the preload, ie in the direction of the closed position. The fuse element softens or melts, in particular due to the effect of the heat caused by the fire. The safety element can have a melting temperature that is below the temperatures that usually occur in the floor drain in the event of such a fire. According to one embodiment, the securing element can be made of plastic. As mentioned, the securing element can in particular be a securing plate.

According to one embodiment, the closure element is prestressed into the closed position by means of a spring acting on a counter bearing of the closure element. The spring can be accommodated, for example, in an accommodation space of the insert element. The receiving space can be sealed off from the floor drain in such a way that surface water to be discharged via the floor drain cannot enter the receiving space.

According to one embodiment, the insert element comprises a cylindrical base body and holding arms extending outwards from the base body, the base body being held in the floor drain by the holding arms when the fire protection insert is in the inserted state. The base body is preferably held centrally in the floor drain, and is held at the same distance from a pipe wall of the floor drain on all sides, in particular by the holding arms. The cylindrical base body can have a smaller diameter than the inlet opening and the pipe wall of the floor drain. The plunger of the closure element can in particular be arranged parallel to a longitudinal cylinder axis of the base body and can be mounted in the base body so that it can move along this longitudinal axis. The tappet can in particular be accommodated in the base body in a sealing manner in such a way that surface water entering the floor drain cannot get into the base body. Due to the smaller diameter of the cylindrical base body, the surface water flows outside of the base body through the floor drain. The surface water can pass through the holding arms. The first end of the plunger pointing towards the cover can be located above the base body, at least in the release position. The second end of the key pointing away from the cover of the locking element can be located below the base body, at least in the locking position. When the fire protection insert is in use, ie when it is inserted into the floor drain, the first end can be understood as an upper end and the second end of the plunger as a lower end. At least in the closed position, the lower end of the plunger can protrude downwards from the base body. The securing element can be arranged in the base body or below the base body. According to one embodiment, the securing element can be arranged at a lower end of the base body. If the securing element is designed as a securing plate, this securing plate can in particular have the same diameter as the base body.

According to one embodiment, the insert element has an intumescent layer that foams up in the event of a fire and closes the floor drain. According to one configuration, the intumescent layer-forming agent can be accommodated in an accommodation space of the insert element, in particular of the cylindrical base body. The intumescent layer is preferably arranged at a lower end of the insert element when the fire protection insert is in use. The intumescent layer is therefore closer to the source of the fire. The foaming agent can close the floor drain on the inside wall by foaming. In addition to the closure element that closes the overlying inlet opening, particularly reliable fire protection is achieved. It is particularly advantageous that when the cover is already in the closed position, the heat in the floor drain increases quickly, which leads to a particularly rapid reaction of the intumescent layer.

According to a configuration in this regard, the security element yields when a first temperature is reached and the intumescent layer foams when a second temperature is reached, the first temperature being lower than the second temperature. According to this configuration, the first safety mechanism, namely the closing of the inlet opening by the cover of the closure element according to the invention, reacts more quickly than the second safety mechanism, namely the foaming of the intumescent layer. The fuse element can be designed, for example, to melt or soften at the lower, first temperature. In the event of a fire, the closure element is first moved into the closed position, which closes off the floor drain from the space above. This prevents hot air or fire from getting into the room above, so that the hot air accumulates in the floor drain. This leads to a particularly rapid increase in temperature, which in turn leads to a particularly rapid reaction, ie expansion, of the intumescent layer.

According to a configuration in this regard, the intumescent is accommodated in a receiving space of the insert element, in particular the cylindrical base body, which is designed to fold outwards in a fan-like manner when the intumescent is foamed and to hold the intumescent in the foamed state in the floor drain. The cylindrical base body, which is held in particular in the center of the floor drain, can therefore fold outwards in a fan-like manner in a section having the intumescent layer. An opening of the receiving space is to be understood in particular as the opening of fan-like elements which can form part of the wall delimiting the receiving space to the outside. Separate fan-like opening elements can also be provided within the receiving space. When folded outwards, the elements can in particular come to rest on the pipe wall of the floor drain. The fan-like elements can also be held in the unfolded state in some other way. These fan-like elements are pressed outwards in particular by the foaming of the intumescent layer and, when opened, hold the intumescent layer inside the floor drain. This prevents the intumescent layer from falling down, which ensures particularly reliable fire protection.

Figur 1

eine perspektivische Ansicht eines erfindungsgemäßen Brandschutzeinsatzes in einer längs ausgeschnittenen Darstellung in der Freigabestellung,

Figur 2

den Brandschutzeinsatz aus Figur 1 eingesetzt in einen Bodenablauf,

Figur 3

den Brandschutzeinsatz aus Fig. 1 in einer anderen Schnittdarstellung,

Figur 4

den Brandschutzeinsatz aus Fig. 2 mit dem Verschlusselement in der Verschlussstellung, und

Figur 5

den Brandschutzeinsatz mit aufgeklapptem Fächer.

An embodiment of the invention is explained below with reference to figures. Show it:

figure 1

a perspective view of a fire protection insert according to the invention in a longitudinally cut-out representation in the release position,

figure 2

the fire protection operation figure 1 used in a floor drain,

figure 3

the fire protection operation 1 in a different sectional view,

figure 4

the fire protection operation 2 with the closure element in the closed position, and

figure 5

the fire protection insert with the fan open.

Unless otherwise stated, the same reference symbols designate the same objects in the following.

The figures show a perspective view of a fire protection insert 10 according to the invention, which is shown in section. The fire protection insert 10 comprises an insert element 12 with a cylindrical base body 14 and retaining arms 16 extending outwards from the base body. Due to the sectional views, however, only two holding arms are visible. With upper holding sections 16a, which extend radially outwards from a central holding base 16c, the holding arms 16 each rest on an edge of an inlet opening 42 of the floor drain 40 when the fire protection insert is in a state of use, i.e. inserted in a floor drain, as shown in FIG figure 2 to recognize. Abutment sections 16b of the holding arms 16 extending downward from the holding sections 16a are connected to one another via a central holding base 16d and come into contact with a pipe wall of the floor drain 40 .

The fire protection insert 10 further comprises a closure element 18 which is movable relative to the insert element 12 and has a cover 20 and a cover which is different from that The plunger 22 has a first end 22a facing the cover 20 and an end 22b pointing away from the cover 20. The plunger 22 extends through a correspondingly formed receiving space of the base body 14 , with its first end 22a protruding upwards out of the base body 14 and its second end 22b protruding downwards out of the base body 14 . The plunger 22 thus extends along a longitudinal cylinder axis of the base body 14. The plunger 22 and thus the entire closure element 20 can be moved along this longitudinal axis relative to the insert element 12 and thus the base body 14. The closure element 18 is connected via a spring 24 to an in 4 apparent locking position pretensioned. The spring 24 is accommodated in a receiving space 25 of the base body 14 and acts on a counter bearing 26 connected to the plunger 22. This spring preload exerts a force on the closure element 18 along the longitudinal cylinder axis L downwards. Sealing elements 27 are arranged in the area of the upper end of the base body 14 for sealing against the holding base 16c and in the area of the lower end of the base body 14 for sealing against the holding base 16d. According to the invention, the closure element 18 by a securing element 28 against the bias in the Figures 1 to 3 apparent release position held. In the present case, the securing element 28 is designed as a securing plate and is arranged on the second end 22b of the plunger 22 pointing away from the cover 20 . The securing element 28 counteracts the prestressing of the plunger 22 with a counterforce. The securing element 28 is connected to a lower end of the base body 14 via holding elements 30 .

The fire protection insert according to the invention is in the Figures 1 to 3 in the normal state, i.e. without the presence of a fire, with the locking element in the release position. In this state, the fire protection insert is used in a floor drain, so that the holding sections 16a at an edge of Put on the inlet opening 42 of the floor drain 40 and the contact sections 16b rest against the pipe wall of the floor drain, as mentioned. The base body 14 consequently has a smaller diameter than the pipe wall of the floor drain, so that surface water can enter between the cover 20 and the holding sections 16a, flow down into the floor drain and pass the base body 14 on the outside. In the release position, the inlet opening 42 of the floor drain is released through the cover 20 .

In the event of a fire in a room located below the floor drain, heat passes through the pipes up to the floor drain and thus to the fire protection insert 10. With increasing temperature, the safety element 28 gives way in such a way that there is no longer sufficient counterforce against the spring preload. In particular, the fuse element 28 can partially or completely melt. This means that the plunger 22 is free to move downwards and the closure element 18 is moved into the closed position, which is shown in 4 is evident. As through the comparison between the 3 and 4 As becomes clear, the closure element 18 moves downwards relative to the insert element 12 during the transition from the release position to the closed position along the cylinder longitudinal axis L. The running in a free space of the base body 14 counter bearing 26 is pressed by the spring 24 down. The cover 20 thus moves towards the holding sections 16a and closes the inlet opening 42 of the floor drain 40. This prevents fire, smoke and heat from being able to get up from below through the floor drain and into a space located above.

Due to the arrangement according to the invention of the safety element on the end of the plunger pointing away from the cover and thus the lower end, the fire protection insert according to the invention can react particularly quickly to a fire. The safety element is therefore much closer to the source of the fire than comparable triggering elements in fire protection applications from the prior art.

The fire protection insert 10 also has an intumescent layer 32, which is accommodated in a receiving space 34 of the base body 14 (in figure 4 the intumescent layer is not shown). The receiving space 34 is located in a lower area of the base body 14 and thus also close to the seat of the fire. When the heat rises, the intumescent layer 32 reacts and foams, with fan-like elements 36 arranged in the receiving space 34 opening up outwards and thus holding the intumescent layer 32 in the foamed state in the floor drain. Thus, the intumescent layer 32 is protected from falling down. this is in figure 5 shown, which in turn shows the fire protection insert 10 in the state of use, ie inserted into the floor drain 40 . It can be seen that the foamed intumescent layer 32 fills the entire cross section of the floor drain 10 and thus securely closes it. The expanding intumescent layer 32 has also pushed the wall of the base body 14 outwards, at least in the area surrounding the receiving space 34 . The basic body 14 is in figure 5 not shown, but can still be provided at least in the area of the upper receiving space 25 . In addition, figure 5 It is easy to see that the cover 20 closes the inlet opening of the floor drain 40 in such a way that fire and smoke can be prevented or at least reduced from rising. The floor drain is securely closed, particularly in combination with the foamed intumescent layer.

It can be provided that the fuse element 28 yields at a first temperature and the intumescent layer 32 foams at a second temperature, the first temperature being lower than the second temperature. The fuse element 28 can therefore already at a lower temperature on the Fire react as the intumescent layer 32. As a result, the inlet opening of the floor drain is initially closed by moving the closure element into the closed position. As a result, a great deal of heat accumulates quite quickly underneath the cover 20, which in turn leads to the second temperature being reached quickly and thus to an early foaming of the intumescent layer 32. In this way, particularly effective fire protection is achieved.

Reference List

10

fire protection

12

insert element

14

body

16

holding arms

16a

holding sections

16b

plant sections

16c

holding base

16d

holding base

18

closure element

20

lid

22

pestle

22a

first end (facing the lid).

22b

second end (facing away from the lid).

24

Feather

25

recording room

26

counter bearing

27

sealing elements

28

fuse element

30

holding elements

31

screwing aid

32

intumescent

34

recording room

36

fan-like elements

40

floor drain

L

cylinder longitudinal axis

Claims (11)

Fire protection insert (10) for a floor drain (40), comprising - an insert element (12) which is designed such that it sits in a fixed position in the floor drain (40) when the fire protection insert (10) is in the floor drain (40), and - a closure element (18) movable relative to the insert element (12) with a cover (20) and a plunger (22) extending from the cover (20) into the insert element (12), the closure element (18) between a release position , in which the cover (20) releases an inlet opening of the floor drain (40), and a closed position in which the cover (20) closes the inlet opening of the floor drain (40), can be adjusted, - wherein the closure element (18) is prestressed into the closed position, but is held in the release position counter to the prestressing by a securing element (28) arranged on an end (22b) of the plunger (22) pointing away from the cover (20), - The securing element (28) being designed to yield in the event of a fire, so that the movement of the closure element (18) into the closed position is released. Fire protection insert (10) according to Claim 1, characterized in that the securing element (28) is designed in such a way that it becomes soft and/or melts in the event of a fire. Fire protection insert (10) according to Claim 1 or 2, characterized in that the securing element (28) consists of plastic. Fire protection insert (10) according to one of the preceding claims, characterized in that the closure element (18) is prestressed into the closed position by means of a spring (24) acting on a counter bearing (26) of the closure element (18). Fire protection insert (10) according to Claim 4, characterized in that the spring (24) is accommodated in a receiving space (25) of the insert element (12). Fire protection insert (10) according to one of the preceding claims, characterized in that the insert element (12) has a cylindrical base body (14) and holding arms (16) extending outwards from the base body (14), the base body (14) in the in the fire protection insert (10) is held in the center of the floor drain (40) when the fire protection insert (10) is inserted in the floor drain (40) via the holding arms (16), the plunger (22) of the closure element (18) being movably mounted in the insert element (12). Fire protection insert (10) according to Claim 6, characterized in that the securing element (28) is arranged at a lower end of the base body (14). Fire protection insert (10) according to one of the preceding claims, characterized in that the insert element (12) has an intumescent layer (32) which foams up in the event of fire and closes the floor drain (40). Fire protection insert (10) according to Claim 8, characterized in that the safety element (28) yields when a first temperature is reached and the insulating layer former (32) foams when a second temperature is reached, the first temperature being lower than the second temperature. Fire protection insert (10) according to Claim 8 or 9, characterized in that the intumescent layer (32) is accommodated in a receiving space (34) of the insert element (12), which is designed to fold open outwards in a fan-like manner when the intumescent layer (32) forms and keeping the intumescent (32) in the foamed state in the floor drain (40). System of a floor drain (40) and a fire protection insert (10) according to one of claims 1 to 10, wherein the floor drain (40) has an inlet opening for draining surface water and for transferring the surface water into a drain pipe, the fire protection insert (10) in the floor drain (40) is inserted, so that the insert element (12) can be adjusted between the release position and the closed position.

Images