DE29720074U1 - Chimney element - Google Patents

Description

"Chimney element"

The invention relates to a chimney element with an outer casing and an inner pipe arranged therein that can be displaced vertically to the outer casing.

It is known to pre-assemble chimney systems with storey-high chimney elements that already have all the components, transport them to the construction site and connect them together there. The chimney elements consist of an outer casing made of bricks, an inner pipe inside it, which is centered with spacers in relation to the outer casing and possibly an additional insulation layer between the outer casing and the inner pipe. The inner pipe can be moved in relation to the outer casing in the longitudinal direction of the chimney (vertical direction after assembly).

When transporting to the construction site, the sensitive inner pipe is secured against displacement by means of a so-called safety packing tape that extends lengthways around the chimney element. However, when placing a chimney element on existing chimney elements, the safety packing tape must be loosened, which means that the inner pipe is no longer fixed to the outer casing and can therefore slide out vertically downwards. This is particularly problematic for chimneys that do not have an insulating layer, which causes friction between the outer casing and the inner pipe.

The invention is therefore based on the object of creating chimney elements in which the inner pipe can be prevented from slipping out during the assembly process.

The task is solved by a chimney element with a deflection element connected to the inner pipe, a pair of bushings formed on opposite sides of the outer casing and a locking cable guided through the bushings and around the deflection element for the controllable locking of the vertical position of the inner pipe with respect to the outer casing. The locking tension element, which can be designed as a cable or, for example, as a metal wire, holds the inner pipe firmly to the deflection element and thus prevents it from sliding out downwards. Since the underside of the chimney element is accessible, the chimney element can be placed on top of one below it and the inner pipe can be secured using the locking cable.

·» · · I« ftf«

·

be lowered downwards from the outer casing in a controlled manner and raised again if necessary, so that a precise and tight installation of the inner pipe is easily possible.

The deflection element is preferably attached to one of the spacers on the inner tube. A guide plate or a pipe socket or the like is preferably arranged at the end of the deflection element in order to prevent the locking cable from unraveling. Alternatively, there can also be two deflection elements for deflecting the locking cable.

The locking cable, which is guided through the openings in the casing, can be locked against the outer casing by means of a knot or by means of a suitable locking plate. This enables a controlled lowering and a controlled raising of the inner pipe against the outer casing.

To reduce the frictional forces of the locking cable on the bushing, the latter can have a tubular sleeve made of plastic or metal.

An embodiment of a chimney element according to the invention is described below with reference to the drawing, in which

Figure 1 is a longitudinal sectional view of a

chimney element;

Figure 2 a cross-sectional view of the chimney element

of Figure 1;

Figure 3 an enlarged view of the deflection element

of Figure 2;
30

Figures 4A to 4C Longitudinal sectional views of the chimney element of

Figure 1 to explain the process of placing a
are already existing chimney elements;

Figure 5 shows a detailed view of the cable feedthrough and a

first embodiment of the locking plate;

Figure 6 shows a detailed view of the cable feedthrough and a

second embodiment of the locking plate;

Figure 7 shows a detailed view of the cable feedthrough and a

third embodiment of a locking plate.

Figure 1 shows an exemplary embodiment of a chimney element according to the invention. This has an outer casing 1 made of casing bricks and an inner pipe 2 located therein, which is centered in the outer casing 1 by means of spacers 3. A deflection element 4 is attached to one of the spacers 3. In a position above the deflection element 4, cable passages 5 are formed in the outer casing on opposite sides. These can preferably be made at the casing brick joints. A locking cable 7 is guided through the passages 5 and around the deflection element 4, which allows the inner pipe to be locked in relation to the outer casing in a vertical direction. In addition, the inner pipe 2 can be lowered or raised by giving way or tightening the cable on one side. Due to the pulley effect, the amount of force required for this is reduced. In order to further reduce the frictional force between the locking rope and the rope duct 5, a tubular sleeve made of a suitable friction-reducing material can be inserted into the rope duct.

As can best be seen in Figure 2, the locking cable engages the deflection element 4 arranged eccentrically on the inner tube. This causes a jamming between the spacer 3 and the inner tube 2, whereby the force that can be transmitted from the deflection element 4 to the inner tube via the spacer sleeve becomes greater.

Figure 3 shows the deflection element 4 with the locking cable 7 inserted in a side view. A guide plate 6 attached to the end of the deflection element 4 prevents the locking cable 7 from coming loose from the deflection element 4.

In Figures 4A to 4C, the process of placing a chimney element according to the invention on an existing chimney element underneath is shown schematically. In Figure 4A, the inner pipe 2 is still held by the safety packaging tape 9, which serves as transport security, and additionally by the locking rope 7. The locking system according to the invention thus also increases the transport security of the chimney element, in particular of the sensitive inner pipe. In phase 2 shown in Figure 4B, the safety packaging tape 9 has already been cut through and the chimney element is

M * t (t tttf

for example, by means of a crane placed on the existing element. The locking cable 7 fixes the inner pipe 2 and prevents it from slipping out. In phase 3 (Figure 4C), the inner pipe 2 is lowered by loosening the locking cable 7 so that it can be connected to the pipe socket of the lower chimney element with a precise and tight fit. The outer casing 1 is then also lowered and connected to the lower chimney element. The chimney element according to the invention thus enables the inner pipe element to be raised and lowered in a controlled manner from the outside of the chimney.

The locking cable 7 can be locked by knotting the end of the cable on the outside of the duct 5. Alternatively, however, a locking plate 8 can be used. Figure 5 shows a first embodiment of such a locking plate with two holes for the cable 7 to pass through and nails for fixing the locking plate 8 to the casing stone. The locking plate 8 can also be angled, as shown in Figures 6 and 7. It is important that the weight of the inner pipe is absorbed by the frictional engagement of the locking cable 7 with the locking plate 8. After the assembly of the chimney element has been completed, the locking cable 7 can be cut and removed together with the locking plates.

The chimney element according to the invention enables the inner pipe to be lowered from the outside and thus simplifies the assembly of the chimney element, in particular the alignment and sealing of the inner pipe.

LIST OF REFERENCE SYMBOLS

1 outer jacket

2 inner tube

3 spacers

4 Deflection element

5 Cable guides 6 Guide plate

7 Locking rope

8 Locking plate

9 Securing packaging tape

Claims (12)

» »t · ♦ ft »♦·» PROTECTION CLAIMS 1. Chimney element with an outer casing (1) and an inner pipe (2) arranged therein and displaceable vertically to the outer casing (1), characterized by
a deflection element (4) connected to the inner tube (2), a pair of passages (5) formed on opposite sides of the outer casing (1), and a locking tension element (7) acting through the passages (5) and on the deflection element (4) for the controllable locking of the vertical position of the inner tube (2) with respect to the outer casing (1). 2. Chimney element according to claim 1, characterized in that the passages (5) are arranged above the deflection element (4). 3. Chimney element according to claim 1 or 2, characterized in that the deflection element (4) is attached to a spacer (3) connected to the inner pipe (2). 4. Chimney element according to one of claims 1 to 3, characterized by a guide plate (6) attached to the deflection element (4) to prevent the locking tension element (7) from unraveling. 5. Chimney element according to one of claims 1 to 4, characterized in that a total of two deflection elements (4) for deflecting the locking tension element (7) are attached to the inner pipe (2). 6. Chimney element according to one of claims 1 to 5, characterized in that the locking pull element (7) can be locked by means of knotting with respect to the outer casing (1). 7. Chimney element according to one of claims 1 to 6, characterized by a locking plate (8) for locking the locking pull element (7) with respect to the outer casing (1). •f t t ·· r««t 8. Chimney element according to one of claims 1 to 7, characterized in that the inner pipe (2) is arranged horizontally movable relative to the outer casing (1) 9. Chimney element according to one of claims 1 to 8, characterized by a securing packing band (9) guided longitudinally around the chimney element for securing during transport. 10. Chimney element according to one of claims 1 to 9, characterized in that the bushing (5) is provided with a pipe sleeve for reducing the friction between the locking element (7) and the outer casing (1). 11. Chimney element according to one of claims 1 to 10, characterized in that the passages (5) are arranged on a casing stone joint of the outer casing (1). 12. Chimney element according to one of claims 1 to 11, characterized in that the deflection element (4) is arranged eccentrically to the center of the inner pipe (2).