DE202013002916U1 - Fire protection device for fireproof sealing of a pipe joint - Google Patents

Abstract

Fire protection device (1) for fireproof sealing of a connection between a refractory tube (2) and a combustible tube (4), comprising a housing (6) having a first receiving portion (8) for receiving the refractory tube (2) and a second receiving portion (10) for receiving the combustible tube (4), and at least one fire protection element (14), which is at least partially formed from intumeszentem material (16), characterized in that the fire protection element (14) at least partially on the inside (18) and at least partially on the outer side (20) of the housing (6) is surrounded.

Description

The invention relates to a fire protection device for fireproof sealing of a connection between a refractory tube and a combustible tube, comprising a housing having a first receiving portion for receiving the refractory tube and a second receiving portion for receiving the combustible tube and at least one fire protection element which at least partially made of intumescent material.

In multi-storey houses run between the individual floors refractory cast iron pipes, z. B. SML pipes, which have branches on the respective floors, which are connected to non-fire-safe or flammable plastic pipes. In particular, such pipe combinations of refractory and combustible pipes are found in the sewer pipe systems of multi-storey residential buildings, which have a plurality of residential units on each floor.

In order to prevent the fire spreading and igniting a fire in the fireproof pipe in case of fire or extreme heat, it is necessary to provide a so-called partition at the junctions between the refractory pipes and the combustible pipes, which closes the refractory pipe in such a way that that propagation of a fire or extreme heat in the direction of the combustible tube is prevented.

Known systems for the partitioning of a connection between a refractory tube and a combustible tube require on the one hand a tube connecting device, which mechanically couple the two tubes to each other and on the other hand a fire protection accessory, which is installed in addition to or around the tube connecting device. Such additional fire protection devices can be designed, for example, as fire protection sleeves. Out DE 20 2010 007 623 U1 is such a fire sleeve of the present applicant known.

Due to the necessity of the combination of a pipe connection device and a fire protection sleeve, a high installation effort is required during installation. For the installation of such foreclosures also a large space is needed, which is often not available, especially with regard to subsequent installations of fire-proof foreclosures, for example in old buildings.

The object underlying the invention is to provide a fire protection device which optimizes the fire-safe partitioning of a connection between a refractory pipe and a combustible pipe component, simplified and / or cost-reduced.

The object is achieved by a fire protection device of the type mentioned, wherein the fire protection element is at least partially surrounded on the inside and at least partially on the outside of the housing.

By integrating the fire protection element into the housing and the attachment of the fire protection element surrounding the fire protection element housing surfaces connecting the two pipes and fireproof sealing this connection is achieved by means of a device, whereby the number of parts reduced, reduces costs, simplifies installation and the required space is reduced. The two-sided surrounding the fire protection element according to the invention by the housing does not exclude that further components or components are arranged between the fire protection element and the surrounding housing.

The housing of the fire protection device has a passage which extends over the entire first receiving portion and the entire second receiving portion. Under the inside of the fire protection element is the side facing the implementation. Accordingly, the outside of the fire protection element is to be understood as the side which is oriented in the opposite direction, that is to say into the peripheral environment of the housing.

In a first preferred embodiment, the fire protection element is substantially completely surrounded by the housing. Such a complete sheathing of the fire protection element through the housing is preferably only possible by arranging the fire protection element within the housing during the manufacturing process. The substantially complete enclosure of the housing does not exclude that parts or surfaces of the fire protection element, which are to be assessed as small compared to the entire fire protection element, are not surrounded by the housing.

In a second preferred embodiment of the fire protection device according to the invention, the housing has at least one axial slot in which the fire protection element can be arranged. Such axial insertion ensures on the one hand a secure positioning of the fire protection element relative to the housing and on the other hand allows the subsequent installation or insertion of the fire protection element before, during or after installation of the housing. Due to the subsequent insertion of the fire protection element, the fire protection elements used can be exchanged without expensive disassembly work.

In a further preferred embodiment, the fire protection element is arranged to a first portion in the first receiving portion and a second portion in the second receiving portion. Particularly preferred is an embodiment in which the second portion is greater than the first portion. Information which refers to the proportions of the fire protection element are always proportions by volume.

The fire protection device according to the invention is advantageously further developed in that the fire protection element is arranged completely in the second receiving portion.

In a further preferred embodiment of the fire protection device according to the invention, the fire protection element is designed as a flat ring. Such an annular configuration of the fire protection element causes a particularly homogeneous swelling of the intumescent material, whereby a particularly effective partitioning is achieved.

The fire protection device is further developed by a plurality of fire protection elements, which are preferably arranged uniformly over the circumference of the housing. By being able to equip the fire protection device with multiple fire protection elements, fire protection elements can be used with inexpensive, easy and fast to be produced or produced basic shapes.

The object is also achieved by a fire protection device for fireproof sealing of a connection between a refractory tube and a combustible tube, comprising a housing having a first receiving portion for receiving the refractory tube and a second receiving portion for receiving the combustible tube, wherein that the housing at least partially made of intumescent material, preferably of a material mixture of plastic and an intumescent material. The at least partially formed housing of intumeszentem material further reduces the number of parts, since a separate fire protection element is no longer necessary. Furthermore, such a housing simplifies and accelerates the manufacture and assembly of the fire protection device. In addition, this can further reduce costs.

The fire protection device according to the invention is further developed by at least one clamping element for clamping the refractory tube and / or the combustible tube into the housing. The gripping element improves the fit of the tube in the housing and supports the tubes against the housing such that the stability between the clamped tube and the housing is increased.

In a further preferred embodiment, the clamping element is designed as a circumferential elastically deformable lip and arranged in the first receiving portion and / or in the second receiving portion. Such a lip seals the tube relative to the housing and, due to the elasticity, generates sufficiently high clamping forces in a simple manner.

The fire protection device according to the invention is advantageously further developed in that the outer diameter of the housing in the first receiving portion is smaller than the outer diameter of the housing in the second receiving portion. Owing to the different outside diameters, on the one hand the fire protection element can be easily arranged in the section with the larger outside diameter and, on the other hand, superfluous material can be saved at the section which has a smaller outside diameter, so that the costs of the fire protection device according to the invention are further reduced.

Particularly preferably, the fire protection device according to the invention is further developed in that it has a circumferential web, which is arranged between the refractory tube and the combustible tube. The two tubes are therefore not directly adjacent to each other in the axial direction. A concern of the pipe ends of both pipes together is prevented by the circumferential ridge. Preferably, the circumferential ridge has an inner diameter which is smaller than the outer diameter of the refractory tube and the combustible tube.

Furthermore, the fire protection device according to the invention is further developed by a bracing device, which is used for bracing the refractory tube and the combustible tube with the housing application. The stability of the pipe connection is increased by the bracing device. The bracing device generates forces which extend in the radial direction and point in the direction of the passage, which forces the housing against the tubes.

The fire protection device according to the invention is particularly preferably characterized in that the bracing device is formed at least in two parts, wherein a first part is arranged on the first receiving portion and at least partially on the outside of the housing and a second part is arranged on the fire protection element. The second part of the bracing device, which is arranged on the fire protection element, is at least partially surrounded on the inside or at least partially on the outside of the housing. A two-part bracing device lowers the manufacturing complexity and thus the manufacturing costs and leads to a simplified assembly.

Further features and advantages of the invention will become apparent from the appended claims and the following description, are explained in the embodiments of the fire protection device according to the invention with reference to schematic drawings in detail. Showing:

1 an embodiment of a fire protection device in combination with a refractory tube and a combustible tube in a perspective view;

2 an embodiment of the fire protection device in a sectional view;

3 Parts of an embodiment of the fire protection device in a sectional view;

4 Parts of an embodiment of the fire protection device in a sectional view;

5 Parts of an embodiment of the fire protection device in a sectional view;

6 Parts of an embodiment of the fire protection device in conjunction with a refractory tube and a combustible tube in a sectional view;

7 Parts of an embodiment of the fire protection device in a sectional view;

8th Parts of an embodiment of the fire protection device in a sectional view;

9 an embodiment of the fire protection device in a sectional view;

10 an embodiment of the fire protection device in conjunction with a refractory tube and a combustible tube in a sectional view;

11 Parts of an embodiment of the fire protection device in conjunction with a refractory tube and a combustible tube in a perspective view; and

12 Parts of an embodiment of the fire protection device in conjunction with a refractory tube and a combustible tube in a sectional view.

As shown in 1 is the refractory pipe 2 which is in the first receiving section 8th of the housing 6 the fire protection device 1 is arranged, designed as a tee. The flammable pipe 4 is in the second receiving section 10 of the housing 6 arranged. The housing has a passage 12 which extends over the entire width of the first receiving section 8th and the second receiving portion 10 extends. The outer diameter of the refractory tube 2 corresponds essentially to the inner diameter of the housing 6 in the region of the first receiving section 8th , The outer diameter of the combustible tube 4 corresponds essentially to the inner diameter of the housing 6 in the region of the second receiving section 10 ,

In the case 6 is a fire protection element 14 arranged. The fire protection element 14 is at least partially formed of intumescent material. The ability of the intumescent material under heat or heat to increase its volume many times, the connection between the refractory tube 2 and the combustible tube 4 be sealed off fireproof. By the volume expansion of the intumescent material 16 of the fire protection element 14 will carry out 12 essentially closed. Thus, further spread of a fire can be avoided. The mutually aligned end faces of the refractory tube 2 and the combustible pipe 4 are spaced in the axial direction. Between their front ends is a footbridge 32 arranged. The web is in this embodiment as part of the housing 6 educated. The inner diameter of the bridge 32 is smaller than the outer diameter of the refractory tube 2 and the combustible pipe 4 , An in-coming of the end faces of the two tubes is thus through the web 32 prevented. The housing 6 also has a clamping element 28 on, which is designed as elastically deformable circumferential lip. The clamping element 28 clamps the combustible pipe 4 on the one hand stable in the housing 6 on the other hand seals the connection between the housing 6 and the combustible tube 4 from.

The sectional view of the fire protection device 1 in 2 and 3 dispenses in contrast to the representation in 1 on the representation of the refractory tube 2 and the combustible pipe 4 , The housing shown 6 of the Fire protection device 1 has a fire protection element 14 on. The fire protection element 14 is annular and extends coaxially with the bushing 12 and the cylindrical recesses in the first receiving portion 8th and in the second receiving section 10 , Furthermore, the fire protection element 14 completely in the second receiving section 10 of the housing 6 arranged. It's both on the inside 18 and on the outside 20 from the case 6 surround. The designed as a circumferential elastically deformable lip clamping element is also completely in the second receiving portion 10 of the housing 6 arranged. The fire protection element 14 , which is intumescent material 16 includes extends in the axial direction substantially over the entire width of the second receiving portion 10 ,

In the embodiment 4 the fire protection element does not extend over the substantially entire width of the second receiving portion 10 , Rather, the fire protection element 14 mainly on the end face of the second receiving portion 10 arranged facing side. The clamping element 28 is minimal in the axial direction of the fire protection element 14 spaced apart. Due to the axially spaced arrangement of the clamping element 28 and the fire protection element 14 become the functional areas for clamping the combustible pipe 4 in the second receiving section 10 and for the volume expansion of the intumescent material 16 of the fire protection element 14 at least partially decoupled.

In the 5 illustrated embodiment of the fire protection device 1 has a further inventive arrangement of the fire protection element 14 in the case 6 on. The fire protection element 14 which is the intumescent material 16 includes extends in the axial direction approximately from the transition of the first receiving portion 8th to the second receiving section 10 to over half of the second receiving section 10 , The clamping element 28 is in the direction of the combustible pipe 4 (not shown) axially to the fire protection element 14 spaced. Also in this embodiment, there is an at least partial spatial decoupling between the clamping region of the combustible tube 4 in the case 6 and the scope of the fire protection element 14 ,

In 6 is in the first receiving section 8th of the housing 6 a fireproof pipe 2 arranged. In the second receiving section 10 of the housing 6 is a combustible pipe 4 arranged. The clamping element 28 is due to the inserted combustible tube 4 elastically deformed and lies on the outside of the combustible tube 4 at. This will be the flammable tube 4 opposite the housing 6 supported and sealed. The fire protection element 14 is in to a first part in the first receiving section 8th and to a second part in the second receiving section 10 arranged. The fire protection element 14 extends in the axial direction over the clamping element 28 and the jetty 32 time. The jetty 32 is between the mutually aligned end faces of the refractory tube 2 and the combustible pipe 4 arranged. Through the jetty 32 , whose inner diameter is smaller than the outer diameter of the two tubes 2 . 4 becomes an axial spacing of the two tubes 2 . 4 achieved in the assembled state.

In the 7 illustrated embodiment of the fire protection device has an axial slot 22 on. The axial slot 22 is as part of the housing 6 formed and in the second receiving portion 10 arranged. The axial slot 22 allows the insertion of the fire protection element 14 for example, after mounting the housing 6 on the refractory tube 2 and the combustible tube 4 , The simplified representation in the figure does not show the annular flat configuration of the fire protection element 14 , In further embodiments, the housing 6 the fire protection device 1 also over several bays 22 have, in which several fire protection elements can be inserted. After the axial insertion of a fire protection element 14 in the case 6 the fire protection device 1 is the fire protection element 14 on the inside 18 and the outside 20 from the case 6 surround. A slot 22 is an interior, in which a fire protection element can be introduced, in particular inserted.

8th shows an embodiment of the fire protection device with an axial slot 22 , wherein the fire protection element 14 already inserted into the slot.

9 shows a fire protection device 1 whose case 6 at least partially made of intumescent material 16 is trained. The housing 6 includes a material mixture of plastic and one or more intumescent materials 16 , Such a design of the housing 6 simplifies the fire protection device 1 further, because no separate fire protection element 14 , which is intumescent material 16 includes, is needed. The housing 6 In this embodiment, it may have different regions or sections in which different material mixtures are arranged. For example, near-tubular sections may have a higher proportion of intumescent material than tube-remote sections of the housing 6 ,

This in 10 illustrated embodiment of the fire protection device 1 includes a bracing device 30 , The bracing device 30 is made in one piece, but has two functional areas. The bracing device 30 includes two coupled clamping rings. A first clamping ring of the bracing device 30 is in the first receiving section 8th of the housing 6 arranged. The first clamping ring runs around the housing 6 around and lies on the outside surface of the case 6 on. A second clamping ring is circumferentially on the fire protection element 14 arranged. By means of the bracing device 30 Can make a stable connection between the refractory pipe 2 and the combustible tube 4 will be realized.

The detailed representations in 11 and 12 show that the second clamping ring of the bracing 30 on one side with the fire protection element 14 and on the other side with the case 6 is in contact. The bracing device 30 extends over both parts of the first receiving portion 8th as well as over parts of the second receiving section 10 , In a two-part embodiment of the bracing device, a first part is preferably in the first receiving section 8th and a second part in the second receiving section 10 arranged.

LIST OF REFERENCE NUMBERS

1

Fire protection device

2

fireproof pipe

4

flammable pipe

6

casing

8th

first receiving section

10

second receiving section

12

execution

14

Fire protection element

16

intumescent material

18

inside

20

outside

22

insertion

24

first portion of the fire protection element

26

second part of the fire protection element

28

clamping

30

bracing

32

web

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202010007623 U1 [0004]

Claims (15)

Fire protection device ( 1 ) for fireproof sealing of a connection between a refractory tube ( 2 ) and a combustible tube ( 4 ), with a housing ( 6 ), which has a first receiving section ( 8th ) for receiving the refractory tube ( 2 ) and a second receiving section ( 10 ) for receiving the combustible tube ( 4 ), and at least one fire protection element ( 14 ), which consists at least partly of intumescent material ( 16 ), characterized in that the fire protection element ( 14 ) at least partially on the inside ( 18 ) and at least partially on the outside ( 20 ) of the housing ( 6 ) is surrounded. Fire protection device according to claim 1, characterized in that the fire protection element ( 14 ) substantially completely from the housing ( 6 ) is surrounded. Fire protection device according to claim 1 or the preamble of claim 1, characterized in that housing at least one axial slot ( 22 ), in which the at least one fire protection element ( 14 ) can be arranged. Fire protection device according to one of the preceding claims, characterized in that the fire protection element ( 14 ) to a first share ( 24 ) in the first receiving section ( 8th ) and a second share ( 26 ) in the second receiving section ( 10 ), wherein preferably the second portion ( 26 ) is greater than the first fraction ( 24 ). Fire protection device according to one of the preceding claims, characterized in that the fire protection element ( 14 ) completely in the second receiving section ( 10 ) is arranged. Fire protection device according to one of the preceding claims, characterized in that the fire protection element ( 14 ) has a ring shape. Fire protection device according to one of the preceding claims, characterized by a plurality of fire protection elements, which preferably uniformly over the circumference of the housing ( 6 ) are arranged. Fire protection device ( 1 ) for fireproof sealing of a connection between a refractory tube ( 2 ) and a combustible tube ( 4 ), with a housing ( 6 ), which has a first receiving section ( 8th ) for receiving the refractory tube ( 2 ) and a second receiving section ( 10 ) for receiving the combustible tube ( 4 ), characterized in that the housing is at least partially made of intumescent material, preferably of a material mixture of plastic and an intumescent material. Fire protection device according to one of the preceding claims, characterized by at least one clamping element ( 28 ) for clamping the refractory tube ( 2 ) and / or the combustible tube ( 4 ) in the housing ( 6 ). Fire protection device according to claim 9, characterized in that the clamping element ( 28 ) is formed as a circumferential elastically deformable lip and in the first receiving portion ( 8th ) and / or in the second receiving section ( 10 ) is arranged. Fire protection device according to one of the preceding claims, characterized in that the outer diameter of the housing ( 6 ) in the first receiving section ( 8th ) is smaller than the outer diameter of the housing ( 6 ) in the second receiving section ( 10 ). Fire protection device according to one of the preceding claims, characterized by a circumferential web ( 32 ), which between the refractory tube ( 2 ) and the combustible tube ( 4 ) is arranged and preferably has an inner diameter which is smaller than the outer diameter of the refractory tube ( 2 ) and the combustible tube ( 4 ). Fire protection device according to one of the preceding claims, characterized by a bracing device ( 30 ) for bracing the refractory tube ( 2 ) and the combustible tube ( 4 ) with the housing ( 6 ). Fire protection device according to claim 11, characterized in that the bracing device ( 30 ) has at least one elastically deformable clamp, which extends over the first receiving portion ( 8th ) and the second receiving section ( 10 ) and at least partially on the outside of the housing ( 6 ) and / or partially on the fire protection element ( 14 ) is arranged. Fire protection device according to claim 11 or claim 12, characterized in that the bracing device ( 30 ) is formed at least in two parts, wherein a first part at the first receiving portion ( 8th ) and at least partially on the outside of the housing ( 6 ) is arranged and a second part of the fire protection element ( 14 ) is arranged.

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