Channel for flue gas, especially furnace tube

Abstract

In a duct for flue gas, in particular a furnace pipe, designed for the installation of at least one catalyst and / or a dust separator in the duct, it is provided that it has at least one opening in its duct wall, that this opening is assigned at least one closing device closing the opening and that the catalyst and / or the dust separator is connected to the closing device.

Description

[0001] The invention relates to a flue gas duct, in particular a furnace pipe, designed for the installation of at least one catalyst and / or a dust separator in the duct.

[0002] Such ducts are currently used to convey flue gases. This could be, for example, a stovepipe from a fireplace to a chimney. Such ducts can also be used in private or commercial buildings to convey flue gases from boilers to fireplaces and chimneys.

[0003] Since flue gases can contain harmful substances, catalysts have already been proposed for treating the flue gases as they pass through the duct. These catalysts are placed at various locations in the duct.

[0004] Dust collectors are also used in ducts to separate dust from the flue gas that is carried through the duct with the flue gas. Such dust collectors are also installed along the flue gas duct.

[0005] The invention is based on the object of providing a channel of the type mentioned at the outset in which catalysts and / or dust separators are arranged in an easily accessible manner.

[0006] This object is achieved according to the invention in that the channel has at least one opening in its channel wall, that this opening is assigned at least one closing device closing the opening and that the catalyst and / or the dust separator is connected to the closing device.

[0007] In the channel according to the invention, it is proposed that catalysts and dust separators are not arranged freely along the channel, but rather that a special arrangement be provided for them. This arrangement comprises at least one closing device to which the catalyst or dust separator is connected. The closing device is assigned to an opening in the channel. The channel has this opening in its channel wall, which can then be closed with the closing device.

[0008] The closure device can be assigned to the duct and its opening. Similarly, the closure device can be removed from the duct, with any catalysts and / or dust collectors connected to the closure device also being removed from the duct. The catalysts and / or dust collectors can be cleaned or reconditioned while removed from the duct.

[0009] According to a first development of the invention, the opening in the channel wall extends up to the center axis of the channel and encompasses half the channel circumference. The opening for introducing the catalysts and / or dust separators is thus wide. The closing device is then correspondingly designed, since it is provided that the closing device has a wall whose dimensions are larger than the dimensions of the opening in the channel wall. The opening in the channel wall is closed with the wall of the closing device, and catalysts and / or dust separators are introduced into the interior of the channel. The wall can lie flat on the outer walls of the channel.

[0010] A further development of the invention provides that the channel wall has a circular cross-section, and that the wall of the closing device has a circular cross-section with the same radius. The wall of the closing device is thus adapted to the design of the channel wall. If the channel is designed like a circular tube, then the wall of the closing device also provides a section of tube.

[0011] Furthermore, it is possible to provide fastening means for a fixed attachment of the closing device to the duct. The closing device is attached to the duct using the fastening means. The fastening means may comprise at least one hinge, with which the closing device is pivotably connected to the duct. The catalysts and / or dust separators connected to the closing device are thus pivoted into or out of the duct with the closing device. Alternatively, the fastening means may also comprise elongated holes and screws to secure a closing device after insertion into the duct.

[0012] The closure device preferably has grid structures for accommodating the catalyst and / or the dust separator. Several catalysts can be arranged one above the other, or several dust separators can be arranged one above the other, with the flue gas flowing through them in succession.

[0013] According to an alternative embodiment of the invention, the locking device can be designed as a housing that can be inserted into the channel. This housing is adapted in its dimensions to the channel. For example, the housing of the locking device is designed as a cylinder whose outer diameter is smaller than the inner diameter of the channel in the area of the opening. Thus, the housing can be inserted into the channel; with appropriate dimensions, the housing simultaneously closes the opening in the channel. The housing fits into the channel's contours.

[0014] Preferably, all components of the channel according to the invention are made of sheet steel. Alternative materials for the channel and the closing device are aluminum, plastic, or glass, or a combination of plastic and glass.

[0015] Embodiments of the invention are illustrated in the drawings. They show: Figure 1: a perspective view of a flue gas duct according to the invention according to a first embodiment, Figure 1a: a further perspective view of the flue gas duct according to the invention according to Figure 1, Figure 1b: a side view of a duct according to the invention for flue gas according to a second embodiment, Figure 2: a side view of a duct according to the invention according to a third embodiment, Figure 3: a perspective view of a component of a duct according to the invention according to a fourth embodiment, Figure 4: a perspective view of a further component for the duct according to the invention according to Figure 3 and Figure 5: a side view of the component of a channel according to the invention according to the fourth embodiment.

[0016] Canal 1 has an extension 2 of its outer diameter along its length. In the area of extension 2, an opening 3 is located in the canal wall of canal 1; opening 3 encompasses half the canal circumference.

[0017] A closing device 4 is assigned to the opening 3 of the channel 1. This closing device 4 carries catalysts 5. Grid structures 6 for receiving the catalysts 5 are arranged inside the closing device 4.

[0018] Channel 1 also has a circular cross-section in its extension 2. The closing device 4 has a wall 7 that also runs on a circular arc. This circular arc of wall 7 coincides with the circular arc of the cross-section of extension 2, so that the closing device 4 can be brought closer to channel 1 and the wall 7 rests on the extension 2 of channel 1. The connection between the closing device 4 and channel 1 is then established via elongated holes 8 and screws.

[0019] Figure 1ashows that a frame 11 attached to the wall 7 serves to accommodate the catalysts 5 within the wall 7. The frame 11 carries an eyelet through which a rod 12 can be passed. The catalysts 5 each have an opening 13 through which the rod 12 can be passed during their arrangement within the wall 7. The star-shaped lattice structures 6 are placed between the individual catalyst discs. These lattice structures 6 also have an eyelet through which the rod 12 is passed.

[0020] Figure 1b shows an alternative embodiment in which the closing device 4 is pivotally connected to the channel 1. The connection is effected via joints 13. The catalysts 5 are accommodated in a grid structure 6. A closure between the closing device 4 and the channel 1 is effected via clamping fasteners 14. These engage with projections 5 of the closing device 4.

[0021] Figure 2shows, in a second embodiment, how a locking device 4 is applied to a channel 1. The locking device 4 is attached to the channel 1 with fastening means 9 and is integrated flush with the surface of the channel 1.

[0022] Figures 3 and 4 show a different embodiment. Here, the locking device 4 is designed as a housing 10. The housing 10 has the shape of a cylinder and can be inserted into the opening 3 of a similarly cylindrical channel 1.

[0023] Figure 5 shows that the housing 10 can also be inserted into a channel 1 with a closing device 4 hinged to the channel 1. The housing 10 is inserted into the closing device 4 and can be pivoted with it into the interior of the channel 1.

[0024] The flue gas duct 1 according to the invention can be installed vertically or horizontally. The built-in catalysts 5 or dust separators reduce gaseous or dust emissions, or a combination of these emissions.

[0025] The individual components of duct 1 and the closing devices 4 can be made of sheet steel. The components can be equipped with appropriate seals to prevent flue gas from escaping from duct 1.

[0026] The catalysts 5 can be metal catalysts or sponge ceramic catalysts. They can also be attached and held in the closing device 4 using spindles or threaded spindles.

Claims

1. Flue gas duct, in particular a furnace pipe, designed for the installation of at least one catalyst and / or a dust separator in the duct, characterized by that it has at least one opening (3) in its channel wall, that this opening (3) is assigned at least one closing device (4) closing the opening (3) and that the catalyst (5) and / or the dust separator is connected to the closing device (4).

2. Channel according to claim 1, characterized in that the opening (3) is formed in the channel wall up to the central axis of the channel (1) and covers half the channel circumference.

3. Channel according to claim 1 or 2, characterized in that the closing device (4) has a wall (7) whose dimensions are larger than the dimensions of the opening (3) in the channel wall.

4. Channel according to claim 3, characterized in that the wall (7) of the closing device (4) is adapted to the design of the channel wall.

5. Channel according to claim 4, characterized in thatthe channel wall has a circular cross-section and that the wall (7) of the closing device (4) has a circular cross-section with the same radius.

6. Channel according to one of the preceding claims, characterized in that Fastening means are provided for a fixed attachment of the locking device (4) to the channel (1).

7. Channel according to claim 6, characterized in that the fastening means comprise at least one hinge with which the locking device (4) is pivotally connected to the channel (1).

8. Channel according to claim 6, characterized in that the fastening means include elongated holes (8) and screws.

9. Channel according to one of the preceding claims, characterized in that the closing device (4) has grid structures (6) for receiving the catalyst (5) and / or the dust separator.

10. Channel according to one of the preceding claims, characterized in thatthe closing device (4) is designed as a housing (10) which can be inserted into the channel (1).

11. Channel according to claim 10, characterized in that the housing (10) of the locking device (4) is designed as a cylinder whose outer diameter is smaller than the inner diameter of the channel (1) in the region of the opening (3).

12. Channel according to one of the preceding claims, characterized in that its components are made of sheet steel.

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