DE20220498U1 - Method for fire proofing cable duct and ground drain with a cylindrical insert with thermally expanding cladding - Google Patents

Abstract

A method for fire proofing a ground drain or cable duct etc. has a cylindrical insert (5) with an outer cladding (4) which expands under high temperatures, or through burning, e.g. vermicular graphite. The cylinder can be plastic moulded and is held in the cable duct by an outer flange (6). During a fire the plastic cylinder and support flange can melt while the cladding is activated to expand and form a gas tight closure for the duct. The system can be retrofitted to existing ducts.

Description

Description
The invention relates to a floor drain according to claim 1 or 7.

This involves the subsequent installation of a preventive fire protection measure designed to prevent the spread of fire through floor drains. This enables floor drains in ceilings to be equipped or subsequently converted with fire protection requirements in order to meet statutory fire protection requirements without the need for complex dismantling of the floor drain.

According to § 17 MBO, structural systems must be designed in such a way that, among other things, the spread of fire and smoke is prevented. In the case of wall or ceiling openings for building services installation lines, in particular pipe ducts or lines and floor drains, structural measures in the form of fire barriers are provided. These ensure that in the event of a fire, fire cannot spread to neighboring fire compartments. The fire barriers must have the same fire resistance as the affected wall or ceiling. Examples of possible implementations of fire barriers are provided by the use of special fire protection mortar, fire protection cushions or prefabricated fire protection elements. In this case, either the ceiling or wall openings are filled with fire protection mortar or plastic fire protection putty after the pipe and line installation has been completed.

Meissner, BOLTE & Partner M/ACO-269-DE/I/G

closed, or fire protection cushions filled with special fire retardants are placed in the opening in the ceiling or wall, after which the cables are installed.

Fulfilling the relevant provisions of the individual state building regulations regarding structural fire protection requires measures that must be taken into account from the outset when building a new building. Since these measures are already known during the planning stage, they can be implemented relatively easily during the new building phase. However, the situation is different for buildings that must meet fire protection requirements but were not met during the original construction. Retrofitting, for example, already cast-in drains in accordance with the requirements of the basic standard for preventive fire protection is only possible with greater effort, i.e. the floor drains that have already been installed usually have to be completely dismantled.

The retrofitting is therefore a complex and costly structural intervention.

The present invention is based on the problem of developing a fire protection measure known from structural fire protection to prevent the spread of fire through floor drains in such a way that retrofitting fire protection within drains in ceilings is possible without special structural measures. In particular, a complete and labor-intensive dismantling of the already installed floor drains for the subsequent installation of suitable fire compartment separations (firewalls) should be avoided. Retrofitting drains that have already been cast in is not possible to date, but requires a complete replacement of the floor drains. In particular, the present invention is based on the problem that a floor drain can currently only be converted to fire protection class R 120 according to DIN 4102 Part 11 by complete dismantling, i.e. only by means of labor-intensive and costly structural intervention.

On the basis of the problem described, the present invention is based on the output of the above-mentioned

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The aim is to further develop the type of fire protection system in such a way that retrofitting in accordance with the requirements of the state building regulations with regard to structural fire protection can be carried out without any special construction work, at low cost and without any further complications.
5

This object relating to the device is achieved in a fire protection device for a floor drain with a drain pipe socket as a precaution against the transmission of fire in that the fire protection device comprises a flow-through fire protection cartridge which can be plugged into the drain pipe socket or extended on the drain pipe socket and which has at least one fire protection element which seals the floor drain gas-tight in the event of a fire due to the effect of heat. Furthermore, the process-related object underlying the invention is achieved by a method for retrofitting a floor drain with a fire protection device of the type mentioned above in accordance with patent claims 9 to 11.

The solution according to the invention has a whole series of significant advantages over the devices known from structural fire protection and explained above. Firstly, a fire protection cartridge is used to meet structural fire protection requirements with regard to the spread of fire in floor drains. The fire protection cartridge represents a fire compartment separation (firewall) which is designed as a single component in such a way that it can also be used subsequently, i.e. as a retrofit to a floor drain. The advantage of the fire protection cartridge according to the invention is in particular that it can be inserted into the drain pipe socket of the floor drain. This eliminates the need for complete disassembly of already installed floor drains.

A fire protection cartridge according to the present invention can be inserted into the drain pipe socket of a floor drain, the functioning of the floor drain is not affected, as the fire protection cartridge allows flow. The fire protection cartridge is also designed in such a way that fire protection elements are integrated, which seal the floor drain fire- and gas-tight in the event of a fire due to the effect of heat. This allows

Meissner, BOLTE & Partner M/ACO-269-DE/I/G

The fire compartment separation integrated in this way prevents the spread of fire via floor drains without the retrofitting of the floor drains requiring complex structural intervention. The fire protection cartridge according to the invention makes it possible in particular to subsequently convert a floor drain installed in a building ceiling with fire protection overlays to fire protection class R 120 according to DIN 4102 Part 11 without dismantling the floor drain. The retrofitting can be carried out without special tools, i.e. basically by hand. In this way, legally required fire compartments can be implemented through easy, tool-free and cost-effective retrofitting in old buildings or equipment in new buildings.

It is also particularly advantageous that the fire protection cartridge according to the present invention is provided on the drain pipe socket of a floor drain, whereby the fire protection cartridge extends the floor drain. The fire protection cartridge serves as a separate component and is therefore particularly suitable for intermediate installation in a continuous pipe after a floor drain. The outgoing drain pipe socket of the floor drain is connected to one side of the fire protection cartridge and the further waste water pipe is connected to the other side of the fire protection cartridge, just like a normal piece of pipe.

The fire protection cartridge's ability to seal the floor drain gas-tight in the event of a fire due to the effects of heat prevents the spread of fire via duct systems or drain pipes between individual fire compartments in a building. The solution according to the invention therefore represents an effective sealing off of adjacent fire compartments in accordance with the requirements of the state building regulations, and the fire protection measures are easy to produce and inexpensive to implement.

The advantage of the invention lies in particular in the fact that a simple to implement and very effective method for equipping or subsequently converting a floor drain with a fire protection device can be achieved.

Meissner, BOLTE & Partner .:..'..* '.."...' '.."...· M/ACO-269-DE/I/G

Preferred developments of the invention are specified in the subclaims.

In one embodiment of the device, it is preferably provided that the fire protection cartridge is designed as a hollow cylinder. This has the particular advantage that, on the one hand, the manufacture of such a fire protection cartridge is relatively easy to implement, and, on the other hand, the fire protection cartridge can be easily and easily inserted into the drain pipe socket, since the cartridge is axially symmetrical and thus installation or assembly is particularly easy.

One possible implementation of the fire protection cartridge according to the invention is that the integrated fire protection element is made of vermicular graphite or a similar material that expands at elevated temperatures and is temperature-resistant. This has the particular advantage that in the event of a fire, the fire protection element expands due to the effects of heat and thus seals the fire protection cartridge or the drain pipe socket into which the fire protection cartridge is inserted in a gas-tight manner. In particular, the fact that the material of the fire protection element is also temperature-resistant ensures effective fire insulation in drain pipes. In particular, vermicular graphite has the property that expansion only begins when exposed to heat above approx. 150 ^° C. The fire protection element therefore does not react when hot water is poured down the drain. A floor drain equipped with the fire protection device according to the invention is therefore not restricted in terms of the possibility of flushing it through, for example with hot water.

Furthermore, it is to be mentioned as an advantage of the solution according to the invention that the fire protection device according to the invention comprises a particularly elastic locking means for positioning and holding the fire protection cartridge in the drain pipe socket. This constructive measure ensures that the fire protection cartridge is firmly positioned in the drain pipe socket during normal operation after installation and is not carried away by water or objects flowing through the drain pipe. Here- : :&Igr;· ^&ngr; Of-O "· ^: "· :· :":·::· : : ·:

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This ensures reliable and maintenance-free positioning of the fire protection cartridge.

One possible implementation of the locking means is that an elastic flange arrangement or similar clamping arrangement is provided, in particular at one end of the fire protection cartridge, for direct or indirect engagement with the drain pipe socket. Direct engagement is to be understood as a device on the fire protection cartridge that interacts with the drain pipe socket in such a way that the secure positioning of the fire protection cartridge is ensured. Indirect engagement is to be understood as, for example, a protruding element on the drain pipe socket that holds the fire protection cartridge according to the invention in the drain pipe socket. The advantage of this embodiment is that such a flange arrangement or clamping arrangement can be implemented particularly easily and without major manufacturing processes. This also makes it possible for the fire protection cartridge according to the invention to be manufactured particularly inexpensively as a fire protection device against the transmission of fire.

In an advantageous embodiment of the fire protection device according to the invention, the floor drain comprises an odor trap with a bell body and a nozzle, wherein at least one fire protection element is arranged on an inner side of the bell body, in particular opposite an inlet opening of the drain pipe nozzle, which thermally insulates the bell body from the inside against the influence of heat. This has the particular advantage that in the event of a fire, even before the fire protection cartridge seals the drain pipe nozzle gas-tight, the bell body is prevented from melting or burning through. Since the bell body is usually made of polypropylene-like material, which melts, burns or collapses relatively quickly when exposed to heat, an advantageous further development of the fire protection device provides a fire protection element used as insulation, which thermally insulates the bell body from the inside and thus prevents the odor trap from burning through or collapsing prematurely. The fire protection element mounted in the bell body can, for example,

made of vermiculite graphite, depth: sep. Ries, has.the.particular.advantage.that • f· ·.·........ .... ....

Meissner, BOLTE & Partner

on the one hand, the thermal insulation of the bell body is provided, and on the other hand, when exposed to heat, the fire protection element expands and at least partially fills the interior of the bell body and thus already partially seals off the odor trap.
5

It is particularly advantageous that the fire protection cartridge is designed in such a way that it can be inserted into the socket of the fire protection drain bell. This has the advantage, particularly when installing or assembling the fire protection cartridge in a fire protection drain bell, that retrofitting a floor drain with fire protection according to the present invention is particularly simple and user-friendly. All that is required is to remove the odor trap from the floor drain and insert the fire protection cartridge into the socket of the odor trap. After the odor trap has been reinserted into the floor drain, the required structural fire protection is already integrated into the floor drain. The fire protection cartridge can therefore also be used in floor drains that are only accessible from the outside under special circumstances, such as particularly deep floor drains.

In one embodiment of the fire protection device according to the invention, it is provided that the fire protection cartridge is flush with the lower edge of the nozzle of the fire protection drain bell. This has the advantage that the fire protection cartridge can also be installed in positions in the floor drain that are lower or further away from the actual floor drain. Depending on the design of the floor drain, the fire protection cartridge can therefore be installed in the most suitable positions, e.g. from a fire protection point of view.

The solution according to the invention provides in particular a fire protection device which makes it possible to retrofit a floor drain with a fire protection device without any special construction work. To do this, it is only necessary to remove a conventional standard drain bell or odor trap from the floor drain and to insert the fire protection device according to the invention.

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protective cartridge into the drain pipe socket of the floor drain. The advantage of this is that this measure does not require any tools or major construction work. In particular, there is no need to completely dismantle the floor drain.
5

It is also particularly advantageous that a conventional standard drain bell or a conventional odor trap can be replaced by a fire protection drain bell according to the present invention. This process step also does not require the use of tools or any major construction work.

In a special embodiment of the invention, the fire protection cartridge according to the invention is inserted directly into the nozzle of the fire protection drain bell, which further simplifies the subsequent conversion of a floor drain with a fire protection device. Thus, using the fire protection device according to the invention, it is possible to equip a floor drain with structural fire protection in accordance with the relevant provisions of the individual state building regulations, both in the case of new construction and as part of a retrofit, in a particularly easy, tool-free and cost-effective manner.

In the following, preferred embodiments of the fire protection device according to the invention for a floor drain with a drain pipe socket as a precaution against the transmission of fire are explained in more detail with reference to the drawing:

Show it:

Fig. la is a plan view of an embodiment of the inventive

fire protection cartridge;
30

Fig. 1b is a side view of a longitudinal section of the fire protection cartridge according to Fig. la;

Meissner, BOLTE & Partner .:..*..* *·."·.. *..' ..'M/ACO-269-DE/I/G

Fig. 2a is a view of a odor trap according to a first

Example of integrated fire protection element;

Fig. 2b is a side view of a longitudinal section of an odor trap.

ses according to a first embodiment;

Fig. 3 is a side view of a longitudinal section of an odor trap according to a second embodiment with an inserted fire protection cartridge;

Fig. 4a a side view of a longitudinal section of a floor drain with

built-in odour trap and fire protection cartridge according to the embodiment of Fig. 3;

Fig. 4b a side view of a longitudinal section of a floor drain with

side inlet and built-in odour trap and fire protection cartridge according to the embodiment of Fig. 3;

Fig. 5 is a side view of a longitudinal section of an odor trap according to a third embodiment;
20

Fig. 6a a side view of a longitudinal section of a floor drain with

built-in odour trap and fire protection cartridge inserted from below according to the embodiment of Fig. 5;

Fig. 6b is a side view of a longitudinal section of a floor drain with side inlet and built-in odor trap and fire protection cartridge inserted from below according to the embodiment of Fig. 5.

Fig. 7 is a side view of a longitudinal section of an odor trap according to the embodiment of Fig. 3 with a fire protection cartridge inserted as an intermediate assembly in a continuous pipe after a floor drain.

Meissner, BOLTE & Partner ,:..*..* ·..··”· ·,.··..· M/ACO-269-DE/I/G

In the following description, the same reference numbers are used for identical and equivalent parts.

Fig. 1a shows a plan view of an embodiment of the fire protection cartridge 2 according to the invention. Fig. 1b shows a side view of a longitudinal section of the fire protection cartridge 2 in the embodiment according to Fig. 1a. The fire protection cartridge 2 consists of a cartridge body 5, which is designed as a hollow cylinder, e.g. made of polypropylene. The fire protection element 4 is arranged on the outer wall of the cartridge body 5; the fire protection element 4 forms a hollow cylinder, the inner wall of which is directly adjacent to the outer wall of the cartridge body 5. The fire protection element 4 is preferably made of vermicular graphite, which expands irreversibly in the heat occurring in the event of a fire (> 150 ^° C), melting the cartridge body 5 and, in the expanded state, can withstand the extreme temperatures of a fire for a long time. The vermicular graphite layer, or the wall thickness of the fire protection element 4 designed as a hollow cylinder, is dimensioned such that the fire protection element 4, in the expanded state and with the cartridge body 5 melted, seals the interior of the fire protection cartridge 2 and thus the drain nozzle of the floor drain in a gas-tight manner. The fire protection cartridge 2 can be used as a fire compartment divider (firewall) in the embodiment shown in Fig. 1a and Fig. 1b, provided it is inserted, for example, into a drain nozzle of a floor drain. So that the fire protection cartridge 2 can be suitably positioned and held in a channel or in a shaft, elastic locking means 6 are provided at the upper end of the fire protection cartridge 2. In the embodiment shown in Fig. 1b, the locking means 6 are designed as elastic flange arrangements 6 for direct engagement with a drain pipe nozzle or the like.

The following drawings describe further fire protection devices that are integrated into various odor traps for floor drains. The term odor trap refers to both drain bells and odor trap bells.

Meissner, BOLTE & Partner .:!« *·/ ""” ⁵ \.· * %, ^s " ^: M/ACO-269-DE/I/G

Fig. 2a shows a view of a fire protection element integrated in an odor trap 7 according to a first embodiment of the invention. The fire protection element 11 is circular in plan view and slightly curved in cross section, so that the fire protection element 11 can be attached particularly well to the inner wall 10 of an odor trap bell 8. Like the fire protection element 4 from Fig. la or Fig. 1b, the fire protection element 11 is preferably made of vermicular graphite; however, other materials that expand at elevated temperatures and have temperature-resistant or flame-resistant and heat-insulating properties are also conceivable.

Fig. 2b shows a side view of a longitudinal section of an odor trap 7 according to a first embodiment. The fire protection element 11 according to the embodiment shown in Fig. 2a is arranged on the inside of the bell of the bell body 8 in the odor trap 7. The fire protection element 11 has the task of thermally insulating the bell body 8 in the event of a fire so that the heat emerging from the inlet opening 12 does not melt the odor trap 7. The odor trap 7 is usually made of polypropylene and thus does not withstand the effects of heat for long in the event of a fire without special insulation. For this reason, the fire protection element 11 is preferably attached opposite the inlet opening 12 of the nozzle 9 of the odor trap 7. The odor trap 7 further comprises a sealing ring 15 and a flange arrangement 16, which enable the nozzle 9 to interact with a floor drain nozzle, so that the odor trap 7 can be inserted into a floor drain in a gas-tight or watertight manner.

Fig. 3 shows a side view of a longitudinal section of an odor trap 7 according to a second embodiment with an inserted or welded or directly molded fire protection cartridge 2. As already described in Fig. 2b, in the second embodiment there is also a fire protection element 11 on the bell inner side 10 of the bell body 8 in the odor trap 7, which is preferably arranged opposite the drain opening 12 of the odor trap 7 _{# ;>} The fire protection element 11 serves in

Meissner, BoLTE & Partner ·2*-*·-<

primarily for thermal insulation of the bell body from heat that rises from the inlet opening 12 in the event of a fire. A further advantage is that the fire protection element 11, if it comprises vermicular graphite, expands when exposed to heat and thus at least partially fills the volume between the bell body 8 and the nozzle 9 and seals the odor trap almost gas-tight. This already creates a fire barrier or a fire compartment separation.

In order to be able to effectively prevent the passage of fire, a fire protection cartridge 2 is also provided in the lower part of the nozzle 9, which lies flush with the lower edge of the nozzle 9. The fire protection cartridge 2 comprises a cartridge body 5 made of PP, which melts in the event of fire, and a fire protection element 4, which expands in the event of fire, squeezes the melting cartridge body 5 and seals the entire drain opening 12 gas-tight.

Fig. 4a shows a side view of a longitudinal section of a floor drain 1 with built-in odor trap 7 and fire protection cartridge 2 according to the embodiment from Fig. 3. The odor trap 7 is placed in the drain pipe socket 3 of the floor drain 1 and is positioned by means of a flange arrangement 16. The sealing ring 15 serves to ensure that the connection between the drain pipe socket 3 and the socket 9 of the odor trap 7 is gas-tight or watertight.

Fig. 4b shows a side view of a longitudinal section of a floor drain 1 with a side inlet 14 and built-in odor trap 7 and a fire protection cartridge 2 according to the embodiment of Fig. 3. The odor trap 7 is inserted into the drain pipe socket 3 of the floor drain 1 and closes gas-tight or watertight by means of a sealing ring 15 between the outer wall of the socket 9 and the inner wall of the drain pipe socket 3. The fire protection cartridge 2 is - as already described in Fig. 3 - inserted, welded or molded into the socket 9 of the drain opening 12 of the odor trap 7. In the case of the plug-in solution, elastic

MEISSNER, BOLTE & PARTNER

see locking means (not explicitly shown) for positioning and holding the fire protection cartridge 2 in the nozzle 9.

It is also possible for the fire protection cartridge 2 to be integrated into the drain pipe socket 3 of the floor drain 1. Depending on which embodiment is selected, the blocking means 6 of the fire protection cartridge 2 is designed such that it engages directly or indirectly with the drain pipe socket 3 or socket 9 of the odor trap 7.

Fig. 5 shows a side view of a longitudinal section of an odor trap 7 according to a third embodiment. In this embodiment, a fire protection element 11 is attached to the bell inner side 10 of the bell body 8.

Fig. 6a shows a side view of a longitudinal section of a floor drain 1 with built-in odor trap 7 according to the embodiment of Fig. 5 and fire protection cartridge 2 according to the embodiment of Fig. 5. In this embodiment, the fire protection cartridge 2 is inserted directly into the drain pipe socket 3 of the floor drain 1 from below; this can also be done from above as a further embodiment not shown separately with a corresponding design of the drain pipe socket 3. In the embodiment shown in Fig. 6a, elastic locking means 6, which are designed as a flange arrangement, serve to hold and position the fire protection cartridge 2 in the drain pipe socket 3. Depending on the embodiment of the floor drain 1, the drain pipe socket 3 can protrude more or less deeply into a drain pipe 13. Accordingly, the fire protection cartridge 2 can be positioned in different positions, i.e. more or less deeply in the drain pipe 13.

Fig. 6b shows a side view of a longitudinal section of a floor drain 1 with a side inlet 14 and built-in odor trap 7 and fire protection cartridge 2 according to the embodiment of Fig. 5. The integration of the odor trap 7 and the fire protection cartridge 2 corresponds to that of the

MEISSNER, BOLTE & PARTNER

embodiment already discussed in Fig. 6a and will not be explained further here.

Fig. 7 shows a side view of a longitudinal section of an odor trap according to the embodiment from Fig. 3 with a fire protection cartridge 2 inserted as an intermediate assembly in a continuous pipe 17 after a floor drain 1. The fire protection cartridge 2 is provided as a separate component, wherein the fire protection cartridge 2 is installed in a housing 5, which is preferably made of metal. In this embodiment, the housing or the cartridge body 5 is designed such that pipe spigots or sleeves (not explicitly shown) are formed on both sides, so that here on one side the outgoing drain pipe socket 3 of the floor drain 1 and on the other side the continuing pipe 17 can be connected like a normal sewage pipe.

This design can be designed so that the inner diameter of the fire protection cartridge 2 corresponds at least to the inner diameter of the laid pipe 17. The design is made possible by the fact that the fire protection cartridge is not inserted into the outgoing pipe sockets 3 or 17 as in the previously described embodiment, but can be plugged onto the pipe sockets 3 or 17. The fire protection cartridge 2 can thus be mounted in the area between the pipe sockets or sleeves (not explicitly shown) by enlarging the outer cartridge body 5.

At this point, it should be noted that all of the parts described above, viewed individually and in any combination, in particular the details shown in the drawings, are claimed as essential to the invention. Modifications to this are familiar to the person skilled in the art.

List of reference symbols

Floor drain

Fire protection cartridge

Drain pipe supports

·

MEISSNER, BOLTE & PARTNER

15

Fire protection element Cartridge body Elastic locking device/flange arrangement Odour trap Bell body Nozzle

Bell inside Fire protection element Drain opening Drain pipe

side inlet sealing ring

flange

Pipeline 15

Claims (8)

1. Floor drain ( 1 ) with a drain pipe socket ( 3 ) and a fire protection device which expands in the event of a fire due to the effect of heat and thereby seals the floor drain ( 1 ) gas-tight, characterized in that the fire protection device has a fire protection cartridge ( 2 ) with at least one fire protection element ( 4 ) which can be plugged into the drain pipe socket ( 3 ) before or after installation of the floor drain ( 1 ) or which can be arranged on the drain pipe socket ( 3 ), extends it and can be flowed through. 2. Floor drain according to claim 1, characterized in that the fire protection cartridge ( 2 ) is designed as a hollow cylinder. 3. Floor drain according to claim 1 or 2, characterized in that the fire protection element ( 4 ) comprises vermicular graphite or similar material which expands at elevated temperatures. 4. Floor drain according to one of the preceding claims, characterized by a locking means ( 6 ), which is preferably elastic, for positioning and adhering the fire protection cartridge ( 2 ) in the drain pipe socket ( 3 ). 5. Floor drain according to claim 4, characterized in that the blocking means ( 6 ) has an elastic flange arrangement ( 6 ) or similar clamping arrangement, in particular at one end of the fire protection cartridge ( 2 ), for direct or indirect engagement with the drain pipe socket ( 3 ). 6. Floor drain according to one of the preceding claims, wherein an odor trap ( 7 ) is arranged in the floor drain ( 1 ), which has a bell body ( 8 ) and a nozzle ( 9 ), characterized in that on an inner side ( 10 ) of the bell body ( 8 ), opposite an inlet opening ( 12 ) of the drain pipe nozzle ( 3 ), at least one additional fire protection element ( 11 ) is arranged, which thermally insulates the bell body ( 8 ) from the inside against the influence of heat. 7. Floor drain ( 1 ) with a drain pipe socket ( 3 ) and a fire protection device which expands in the event of a fire due to the effect of heat and thereby seals the floor drain ( 1 ) in a gas-tight manner, wherein an odor trap ( 7 ) is arranged in the floor drain ( 1 ), which has a bell body ( 8 ) and a socket ( 9 ), characterized in that the fire protection device has a flow-through fire protection cartridge ( 2 ) with at least one fire protection element ( 4 ) which can be plugged into the socket ( 9 ) of the odor trap ( 7 ) or firmly connected to it. 8. Floor drain according to one of claims 6 or 7, characterized in that the fire protection cartridge ( 2 ) is flush with the lower edge of the nozzle ( 9 ).