Chimney

Abstract

A chimney is described comprising: - a lower first chimney stage (1) which has a fireplace, - a second chimney stage (2) arranged above the first chimney stage (1) with a first section (4.1) of an exhaust pipe connected to the fireplace, - a third chimney stage (3) arranged above the second chimney stage (2), which is designed as an upper chimney and has a second section (4.2) of the exhaust pipe. It is provided that the first chimney stage (1) and the second chimney stage (2) form a common structural unit which has a common body (100), and that the supporting outer shell (300) of the third chimney stage (3) is directly supported on the head end (100k) of the body (100) and is connected to the head end (100k) of the body (100) via a fastening device, the fastening device having a screw anchor device (320, 340).

Description

[0001] The invention relates to a chimney with a fireplace arranged in the lower part of the chimney. The invention is based on a chimney with the features of the preamble of main claim 1.

[0002] DE 10 2008 043 263 B4 describes such a chimney in which the fireplace is arranged in the chimney base, i.e. in the lower part of the chimney. The chimney base of this chimney is formed by a body which has a vertically extending cavity inside, in the lower part of which the fireplace is accommodated and the upper part of which is designed as a free space through which the exhaust pipe of the fireplace is led. The cavity is covered at the top by an adapter plate placed on the body, through which the exhaust pipe extends. The adapter plate is connected to the body by fastening elements. The upper part of the chimney with an exhaust gas outlet pipe is arranged above the adapter plate. The fireplace is designed as a convection fireplace. The cavity in which the fireplace is arranged forms a convection chamber for the convection air flow flowing through the cavity.

[0003] DE 10 2017 112 874 A1 describes a chimney constructed similarly to that in DE 10 2008 043 263 B4.

[0004] EP 1 437 550 B1 also describes a chimney with a body forming the chimney base, which has a vertical cavity, in the lower part of which the fireplace is arranged and through which the exhaust pipe extends. A key difference from the previously mentioned prior art is that there is no adapter plate attached to the body that is connected to the body via fastening elements. The body of EP 1 437 550 B1 has an upper section that is designed as a vertically extending solid wall. This solid wall extends approximately over a quarter of the vertical extent of the body. The exhaust pipe and an air supply pipe pass through the solid vertical wall. The body, with its base, side walls, and upper wall, is designed as a single-piece body. The upper chimney is arranged on top of the vertical upper wall.The vertical upper wall of the body forms a solid partition wall of the chimney.

[0005] Furthermore, the following prior art is known: DE 195 11 586 A1 describes a chimney consisting of storey-high chimney elements. Each chimney element consists of an outer shell made of lightweight concrete with an inserted inner pipe and surrounding insulating inserts. The insulating inserts are storey-high, one-piece molded parts, each with a ventilation duct. The chimney elements are connected via anchor bolts. The lightweight concrete outer shells are each tubular, open at the top and bottom. They do not form a body with a head end extending beyond the interior.

[0006] DE 10 2015 111 294 A1 describes a modular chimney. The modules consist of casing blocks, each with a continuous cavity and a vertically offset pipe within it. The pipe can be moved within the continuous cavity of the casing block during assembly and locked in place by a stop device. The modules are connected via a fastening device with screw eyes. The modules have complementary interlocking elevations and depressions on their abutting surfaces, which are formed at the ends of the casing blocks by the vertically offset pipes. The fireplace is located in the floor module. The structural design of the floor module is not described in DE 10 2015 111 294 A1.

[0007] DE 296 18 107 U1 describes a domestic fireplace with prefabricated chimney components connected to each other via tie rods. Each prefabricated chimney component consists of a casing with a continuous cavity containing a flue pipe. The flue pipes are each designed as socket pipes and are each held by a separate support ring on the top of the associated casing. A chimney base with a fireplace located therein is not described in DE 296 18 107 U1.

[0008] DE 100 10 692 C1 describes a chimney consisting of interconnected chimney elements. The chimney elements are socket-shaped and each consist of a socket-shaped inner pipe and a socket-shaped outer pipe. A chimney base with a fireplace located therein is not described in DE 100 10 692 C1.

[0009] The invention is based on the object of further developing a chimney of the type mentioned at the outset which is advantageous with regard to production and / or assembly.

[0010] This object is achieved by the invention with the subject matter of the main claim 1. It is a chimney which comprises the following three chimney stages: a lower first chimney stage having a fireplace, a second chimney stage arranged above the first chimney stage with a first section of an exhaust pipe connected to the fireplace, a third chimney stage arranged above the second chimney stage, which is designed as an upper chimney and has a second section of the exhaust pipe connected to the first section of the exhaust pipe in order to guide the exhaust gas vertically upwards out of the chimney into the open air,

[0011] As far as the structure is concerned, it is essential that the first chimney stage and the second chimney stage form a common structural unit which has a common body, that the third chimney stage has a supporting outer shell which surrounds a vertically extending interior space into which the second section of the exhaust pipe extends, that the body is designed as a concrete body which has a lateral wall which completely or partially surrounds a vertically extending interior space and has a head end which extends over the interior space, wherein it is preferably provided that the vertical extension of the head end is smaller than the horizontal extension of the head end and / or than the horizontal extension of the body.

[0012] According to the invention, it is provided that the head end of the body is formed in one piece with the side wall of the body, and that the supporting outer shell of the third chimney stage is supported on the head end of the body and is connected to the head end of the body via a fastening device, i) in that the fastening device has a screw anchor device, comprising tensioning elements which are guided and supported on or in the outer shell in the longitudinal direction of the outer shell and are anchored in the head end of the body via screw anchors embedded in the head end, and / or ii) in that the fastening device has an angle device, comprising a first angle leg which is fixed to the outer shell via a separate fastening element, such as a screw, and a second angle leg which is fixed to the head end of the body via a separate fastening element, e.g. a screw; and / or iii) in that the fastening device is formed by a shape of the upper side of the head end of the body which has an elevation and / or depression and which interacts in a form-fitting manner with the lower end of the outer shell.

[0013] It is essential that the head end of the body is formed integrally with the side wall. The side wall can surround the vertically extending interior space on all sides or at least on several sides. The head end of the body is preferably plate-shaped.

[0014] In preferred embodiments, the vertical extension of the head end of the body can be of the same order of magnitude as the horizontal wall thickness of the side wall of the body or greater than the horizontal wall thickness of the side wall of the body, preferably 2 to 3 times as large.

[0015] Regarding the design of the body, it can be provided that the body is formed as a cylindrical or cuboid hollow body. In a preferred development, it can be provided that the cylindrical or cuboid hollow body is formed from concrete masonry blocks and / or concrete casing blocks and / or one-piece pipe sections and / or from storey-high pipe sections or as a one-piece concrete body, preferably a one-piece pipe body or a one-piece U-profile body.

[0016] In preferred embodiments, the second section of the exhaust line accommodated in the third chimney stage is designed as an exhaust pipe, preferably a ceramic pipe, which is supported on the head end of the body. In a preferred development, the exhaust pipe can interact at its lower end with a socket device which has a socket pipe which, with its spigot end, passes through the head end of the body and, with its socket end, receives the lower end of the exhaust pipe. Furthermore, the socket pipe can be supported on the head end of the body via a support ring, preferably a conical support ring, in that the upper end of the support ring engages the outside of the socket of the socket pipe and the lower end of the support ring is supported on the upper side of the head end of the body.

[0017] As far as the design of the exhaust pipe is concerned, it can be provided that the exhaust pipe of the third chimney stage is composed of several socket pipes.

[0018] In preferred embodiments, it can be provided that the supporting outer shell of the third chimney stage is supported directly on the head end of the body or indirectly via a base plate on the head end of the body.

[0019] With regard to the design of the outer shell, it can advantageously be provided that the outer shell of the third chimney stage is formed from several casing stones arranged one above the other, preferably lightweight concrete casing stones, wherein the lowest casing stone has an adjacent base plate on its underside, and the base plate is connected to the casing stones via a tensioning device. In a preferred development, it can be provided that the tensioning device has tensioning elements that are guided and supported in the longitudinal direction of the casing stones on or in the wall of the casing stones and are anchored in the base plate via screw anchors, or the tensioning elements pass through the base plate and are anchored in the head end of the body via screw anchors.

[0020] Preferred embodiments can provide that the fastening device, which has an angle device according to ii) of claim 1, is designed such that the first angle leg is fixed to the outside of the base plate via a separate fastening element, e.g. screw, and the second leg is fixed to the head end of the body via a separate fastening element, e.g. screw.

[0021] It can also be provided that the fastening device, which is formed according to iii) of claim 1 by a shape of the upper side of the head end of the body having a raised or recessed portion, interacts in a form-fitting manner with the lower end of the base plate.

[0022] According to the invention, a subdivision of the body is provided in that a horizontal partition wall is arranged in the body, which divides the cavity in the interior of the body into a lower space and an upper space, wherein the fireplace is arranged in the lower space and the first section of the exhaust pipe extending through the partition wall extends in the upper space.

[0023] Alternatively, it can also be provided that the cavity in the interior of the body forms a common cavity to accommodate the fireplace and the first section of the exhaust pipe.

[0024] Preferred embodiments provide that the third chimney stage has an air supply line which extends parallel and / or concentrically to the second section of the exhaust pipe and passes through the second chimney stage and opens into the first chimney stage, supplying air to the fireplace.

[0025] Preferred embodiments provide for the supply air duct to extend into the vertically extending interior space surrounded by the outer shell of the third chimney stage and to penetrate the head end of the body. It may be provided that the supply air duct extends laterally outward at the lower end of the outer shell of the third chimney stage and further penetrates through an opening in the head end of the body.

[0026] It is preferably provided that the second chimney stage has an exhaust gas purification device.

[0027] In preferred embodiments, it is provided that the first chimney stage and the second chimney stage are designed as a common structural unit which forms the chimney base or the chimney plinth.

[0028] In particularly preferred embodiments, it can be provided that the first chimney stage and the second chimney stage have a common body or a common supporting structure.

[0029] Particularly preferred embodiments provide that one or more of the chimney stages are designed as a prefabricated part or are formed from one or more prefabricated parts.

[0030] It can be provided that the first chimney stage is formed from a prefabricated part and / or is designed as a prefabricated part, preferably comprising a factory-supplied first chimney section with a factory-assembled fireplace and / or with a fireplace that can be retrofitted on site.

[0031] It can be provided that the second chimney stage is formed from a prefabricated part and / or is designed as a prefabricated part, preferably comprising a factory-supplied second chimney section with a factory-mounted exhaust gas cleaning device and / or with an exhaust gas cleaning device that can be retrofitted on site.

[0032] It can be provided that the third chimney stage is formed from a prefabricated part and / or is designed as a prefabricated part, preferably comprising a factory-supplied third chimney section or a third chimney section that can be assembled on site from several factory-supplied storey-high chimney sections.

[0033] Particularly advantageous are designs in which the first and second chimney stages form a single prefabricated component. In these designs, the chimney base or chimney plinth is designed as a single prefabricated component.

[0034] Particularly advantageous implementations are obtained if it is provided that the common prefabricated part formed by the first chimney stage and the second chimney stage has a common body and / or a common supporting structure, wherein it is provided that that the fireplace is factory-installed in the common body and / or the common supporting structure or that the fireplace can be retrofitted on-site in the common body and / or the common supporting structure, and / or that the exhaust gas cleaning device is factory-installed in the common body and / or the common supporting structure or that the exhaust gas cleaning device can be retrofitted on-site in the common body and / or the common supporting structure.

[0035] The body is preferably a hollow body. The combined body may be formed from several casing blocks, preferably made of concrete, or as a single body, preferably made of concrete.

[0036] Further features and advantages of the invention will become apparent from the accompanying drawings. Figure 1: a first embodiment of a chimney according to the invention, in a schematic sectional view along a vertical longitudinal section plane; Figure 2: a second embodiment of a chimney according to the invention, in a schematic sectional view along a vertical longitudinal section plane; Figure 3a: a third embodiment of a chimney in a schematic sectional view along a vertical longitudinal section plane; Figure 3b: a front view of the embodiment of the Fig. 3a , View in Fig. 3a from the left; Figure 4: an enlarged section of Figure 3a in the area 1x; Figure 5: a Figure 4 corresponding section, in a first modified version; Figure 6: a Figure 4 corresponding section, in a second modified version; Figure 7: a Figure 4 corresponding section of a third modified version; Figure 8: a Figure 4corresponding section of a fourth modified version; Figure 9: an enlarged section of Figure 3a in the range of 2x.

[0037] In the Figure 1 The first embodiment shown is a chimney S with a fireplace 1x designed as a storage fireplace. The fireplace 1x is integrated into the base of the chimney S.

[0038] Chimney S has an outer shell made of concrete. The structure and exact design of the outer shell are described in more detail below. Chimney S is divided into three axial sections, hereinafter referred to as chimney stages 1, 2, and 3.

[0039] The lower first chimney stage 1 contains the fireplace 1x.

[0040] The second chimney stage 2 is located directly above the first chimney stage 1. It contains a flue gas cleaning system 20. The flue gas cleaning system 20 is located in the flue gas line 4.2, which is connected to the fireplace 1x at the head end and extends vertically through the second chimney stage as flue gas pipe 4.2. The flue gas cleaning system 20 is designed as a module and forms a single structural unit with the flue gas pipe 4.2 of the second chimney stage. This structural unit, consisting of flue gas pipe 4.2 and flue gas cleaning system 20, can be factory-installed in the second chimney stage 2. However, it can also be retrofitted on-site. This applies to the structural unit consisting of flue gas pipe 4.2 and flue gas cleaning system 20, but also to the flue gas cleaning system 20. This can also be installed on-site as an optional retrofit or replaced on-site as part of a repair or replacement.

[0041] The exhaust pipe 4.2 has a side connection piece with an inspection opening 4.2ö. The inspection opening 4.2ö is closed with a removable cover 4.2öv. The exhaust gas purification system 20 is accessible via the inspection opening 4.2ö.

[0042] In the illustrated embodiment in Figure 1 The first chimney stage 1 and the second chimney stage 2 are designed as a structural unit with a common body 100. The body 100 is a hollow body, which can be made of concrete masonry units, preferably casing blocks, or as a one-piece concrete body. In the embodiment in Figure 1The interior of the body 100 is separated by a horizontal partition wall 100z. The partition wall 100z separates the first chimney stage 1 from the second chimney stage 2. In the lower part, i.e. below the partition wall 100z, the fireplace 1x is arranged, in such a way that the partition wall 100z rests on the upper end of the housing of the storage fireplace 1x and forms the head of the fireplace 1x. The partition wall 100z is directly connected to the body 100. In the embodiment in Figure 1 the intermediate wall 100z is designed as a separate horizontal plate which is axially supported on a collar formed on the inner wall of the body 100.

[0043] In modified versions, it is possible that the horizontal partition wall 100z only rests on the fireplace, ie on the head of the fireplace and is only supported there, or that the horizontal partition wall 100z is only supported on the body 100, e.g. on a collar of the inner wall of the body or engaging in the inner wall.

[0044] The exhaust pipe 4.2 of the second chimney stage extends through a connection opening in the intermediate wall 100z and engages with a head-end connection piece (not shown) of the fireplace 1x. The upper end of the exhaust pipe 4.2 of the second chimney stage, which contains the exhaust gas cleaning system 20, extends through an opening in the head of the body 100 for connection to an exhaust line 4.3, which, in the upper part of the chimney of the third chimney stage, conducts the exhaust gas vertically upward through the upper part of the chimney to the outside. The exhaust line 4.3 is designed as an exhaust pipe and engages with a connection socket 4.3a supported on the head of the body 100. This connection socket 4.3a is designed as a load-bearing connection socket that supports the inserted exhaust pipe 4.3.

[0045] The third chimney stage 3 forms the upper part of the chimney S. This contains the exhaust pipe 4.3, which is connected to the exhaust pipe 4.2 of the second chimney stage via the connection socket 4.3a in order to guide the exhaust gas through the third chimney stage and finally to the outside at the chimney head.

[0046] The third chimney stage (3) can be composed of storey-high chimney sections. The storey-high chimney sections can be designed as prefabricated components that are assembled on site. Alternatively, the third chimney stage (3) can also be constructed as a factory-prefabricated component across its entire height. The outer casing of the third chimney stage, like the outer casing of the first and second chimney stages, is made of concrete material, preferably of casing bricks. However, it can also be composed of one-piece pipe sections, preferably each storey-high, or alternatively, depending on the chimney height, of a single-piece pipe section.

[0047] In the two lower stages, ie in the first chimney stage and in the second chimney stage, in the embodiment in Figure 1in the outer casing, i.e. in the common body 100, two inspection openings 100ö, 100ö are formed laterally. The inspection opening 100ö in the first chimney stage forms an access opening to the furnace door 1xv of the storage fireplace 1x. The inspection opening 100ö in the second chimney stage 2 has a closure, e.g. a door 100öv, and forms access to the inspection opening 4.2ö formed in the exhaust pipe 4.2 or its closure flap 4.2öv. The exhaust gas cleaning device 20, which is arranged inside the exhaust pipe 4.2, can be accessed via the inspection opening 4.2ö. In addition, a mechanical soot removal device is also accessible via this inspection opening 100ö in the second chimney section, which in the embodiment in Figure 1by a bullet trap 2k with a locking slide 2s. The locking slide 2s forms a soot trap during sweeping. The bullet trap 2k provides mechanical protection for the fireplace during sweeping.

[0048] Both in the third chimney stage 3 and in the second chimney stage 2, vertical supply air ducts (not shown) are arranged, which supply the supply air to the fireplace in counterflow to the exhaust pipes 4.3 and 4.2.

[0049] In the Figure 2The second embodiment shown is a chimney S which, in contrast to the first embodiment, has a convection fireplace 1x with a convection chamber as the fireplace 1x. The remaining structure of the chimney is the same as in the first embodiment, in particular the exhaust pipe 4.2 of the second chimney stage with the exhaust gas purification device 20 integrated therein is of the same design. Also in the second embodiment in Figure 2 The body 100 with the first chimney stage 1 and the second chimney stage 2 forms a prefabricated component ex works. The prefabricated component 120 is in the second embodiment in Figure 2 designed differently than in the first embodiment in Figure 1 The differences are explained in detail below. The third chimney stage 3 is identical in the first and second embodiments.

[0050] In the following, the differences of the prefabricated component which forms the first and second chimney stage are described, ie the differences of this prefabricated component forming the chimney base in the second embodiment compared to the first embodiment.

[0051] In the second embodiment in Figure 2 The body 100 has a cavity 100h, which forms a common cavity as a receiving space for the fireplace 1x and the exhaust pipe 4.2 with the exhaust gas purification device 20 arranged therein. In contrast to the first exemplary embodiment, the second exemplary embodiment does not have an intermediate wall 100z that divides the cavity 100h into two separate receiving spaces, namely a lower receiving space and an upper receiving space. Such a division is provided in the first exemplary embodiment in Figure 1the case, there, a lower receiving space is formed in the body 100 for receiving the fireplace 1x and, separated by the intermediate wall 100z, an upper receiving space for receiving the exhaust pipe 4.2 with the exhaust gas cleaning device 20 integrated therein. In the second exemplary embodiment, as mentioned, a common cavity 100h is formed for the first and second chimney stages. In this common cavity 100h, a convection air flow K is guided, which is formed by an air flow that flows in at the lower inspection opening 100ö, is heated as it passes the outer wall of the fireplace 1x on the outside of the exhaust pipe 4.2 and finally flows out at the upper inspection opening 100ö. An inspection grille 100kg is inserted in each of the inspection openings 100ö, 100ö.

[0052] In the second embodiment in Figure 2The heat exchange between the chimney and the environment thus takes place via the convection air flow, which is generated as a warm air flow on the outer wall of the fireplace 1x and on the outside of the exhaust pipe 4.2 as it flows through the first and second chimney stages and heats the environment after flowing out via the convection openings. In contrast, in the first exemplary embodiment, in which the fireplace 1x is designed as a storage fireplace, the heat generated in the fireplace is stored primarily in the fireplace's storage and, if necessary, also in other storage devices in the chimney, e.g., in the chimney wall. The heat is then transferred to the environment via heat radiation from the body 100 to the environment.

[0053] Modified embodiments that have a mixed form of the fireplace 1x as a storage fireplace and simultaneously as a convection fireplace are also provided. These have the same as the embodiment in Figure 1 a storage fireplace, but in contrast to the embodiment in Figure 1 They additionally have a convection chamber formed in the body 100, which enables a convection air flow K through the interior of the first chimney stage 1 and the second chimney stage 2. In this embodiment, similar to the embodiment in Figure 2Convection openings 100ö are provided, namely one convection opening 100ö in the first chimney stage and one convection opening 100ö in the second chimney stage. To enable the vertical convection flow K inside the first and second chimney stages, corresponding passage openings are formed in the partition wall 100z in these embodiments.

[0054] In the Figures 3a and 3bThe illustrated embodiment, like embodiments 1 and 2, is a three-stage chimney with a fireplace 1x arranged in the first stage. The fireplace 1x is preferably designed as a storage fireplace. The first chimney stage and the second chimney stage have a common body 100. The interior of this body is divided by a horizontal partition wall 100z into a lower cavity and an upper cavity. The fireplace 1x is arranged in the lower cavity. The exhaust pipe 4.2 passes through the upper cavity. The lower end of the exhaust pipe 4.2 is connected to the fireplace 1x and passes through the horizontal partition wall 100z. With its upper end, the exhaust pipe 4.2 passes through the head end of the body 100 and is connected to the exhaust pipe 4.3 of the upper chimney, which forms the third chimney stage.

[0055] In the exhaust pipe 4.2 in the second chimney stage, an exhaust gas cleaning device 20 is arranged, which is operated by a Figure 3 not shown inspection door in the body 100 is accessible. In this area, in which the exhaust gas purification device 20 is arranged, the exhaust pipe 4.2 has a lateral nozzle (not shown) which has a removable closure cover for the purpose of accessibility to the exhaust gas purification device 20 via the inspection door in the body.

[0056] The third chimney stage is, as in the examples of the Figure 1 and 2, formed by the upper chimney, which has a load-bearing outer shell 300 formed from one or more one-piece concrete bodies, preferably casing stones arranged one above the other. The exhaust pipe 4.3 is guided in the outer shell 300 in the vertical longitudinal center line. The space between the inner wall of the outer shell 300 and the outer wall of the exhaust pipe 4.3 is designed as an air supply duct 5.3, to the lower end of which an air supply pipe 5.3a is connected, which leads out laterally at the lower end of the outer shell 300 and through an opening in the upper head end of the body 100 as air supply pipe 5.2, passing through the second chimney stage in the upper cavity of the body 100, through an opening in the horizontal partition wall 100z and finally is connected to the fireplace 1x as air supply duct 5.1.

[0057] Figure 4 shows the embodiment of the Figure 3the support of the upper chimney on the body 100. The body 100 is designed as a cylindrical hollow concrete body, which is closed at its upper end by a head end 100k.

[0058] The outer shell 300 of the third chimney stage 3 rests with its lower end on the upper side of the head end 100k of the body 100. It is anchored in the head end 100k via a screw anchor device 320. For this purpose, a screw anchor 320a is embedded in the head end 100k. A screw end of a tensioning element 320s is screwed to the screw anchor 320a. The tensioning element 320s is guided in the outer shell along the vertical extension of the outer shell and is axially supported.

[0059] The exhaust pipe 4.3 arranged within the outer shell is preferably designed as a ceramic pipe, preferably made of ceramic socket pipes, each having an insulating outer shell 4.3i. At the lower end of the exhaust pipe 4.3, a lower socket pipe 4.3m is formed, the spigot end of which, with its insulating jacket, extends through a through-hole in the head end 100k of the body 100. The end of the ceramic exhaust pipe 4.3 is inserted into the upwardly open socket of the socket pipe 4.3m. The exhaust pipe 4.3 is supported on the upper side of the head end 100k of the body via a ceramic support ring 4.3t. This support ring is conically flared downwards in a socket-like manner. The upper end of the support ring is supported on the outside of the socket of the socket pipe 4.3m. The lower, extended end is supported on the top of the head end 100k of the body 100.

[0060] At the Fig. 5The modified version shown is in contrast to Fig. 4 for fixing the outer shell 300 on the head end 100k of the body 100 instead of the screw anchor device 320 of the Fig. 4 A fastening device with a fastening bracket 330 is provided. The fastening bracket 330 has a horizontal angle leg and a vertical angle leg. The horizontal angle leg rests on the upper side of the head end 100k of the body 100 and is fixed in the body end 100k via a safety dowel 330a. The safety dowel 330a is inserted into the head end 100k. The vertical angle leg rests on the outside of the outer shell 300 and is fixed to the outside of the outer shell via a fastening element (not shown), such as a screw.

[0061] At the Fig. 6 The modified version shown is in contrast to Fig. 5 instead of the fastening device with mounting bracket 330, as in Fig. 6 As shown schematically, a recess 100ka is formed in the top side of the head end 100k of the body 100, into which the outer shell 300 engages with the exhaust pipe 4.3. The lower end face of the outer shell 300 and the lower end face of the support ring 4.3t rest on the bottom of the recess 100ka. The outer side of the lower section of the outer shell 300 engaging in the recess 100ka rests against the inner wall of the recess 100ka, thus forming a positive engagement.

[0062] At the Fig. 7 The modified version shown is in contrast to Fig. 5At the lower end of the outer shell 300, a base plate 300s, preferably made of glass fiber reinforced concrete, is arranged. The base plate 300s is fixed to the lower end of the outer shell 300 via a screw anchor device 340 with a tensioning element 340s. For this purpose, a screw anchor 340a is embedded in the base plate. The tensioning element 340s is arranged in the outer shell extending in the vertical longitudinal direction and is supported in or on the outer shell and is screwed with its lower screw end into the screw anchor 340a inserted in the base plate 100s. For fastening the outer shell 300 with the base plate 300s attached at the lower end on the top side of the head end 100k of the body 100, a fastening device with a fastening angle 330 is arranged, which is the same as the fastening device with fastening angle 330 in the embodiment in Fig. 5 is trained.

[0063] At the Fig. 8The modified version shown is in contrast to Fig. 7 Instead of the fastening device with fastening bracket 330, a recess 100ka is formed in the top of the head end 100k of the body. The outer shell 300 with the base plate 300s attached to its lower end in the same design as in Fig. 7 intervenes in the execution of Fig. 8 into the recess 100ka form-fitting as in the version in Fig. 6 so that a similar form-fitting connection as in Fig. 6 is formed.

[0064] When presented in Fig. 9 This is a modified version in section X2 in Fig. 3a In contrast to the execution in Fig. 3a the horizontal partition wall is 100z in Fig. 9resting on a collar formed on the inner wall of the body 100. The horizontal partition wall 100z is arranged at a distance from the top of the fireplace 1x. The horizontal partition wall 100z has the same as in Fig. 3 a through hole for the exhaust pipe 4.2 and a through hole for the supply air pipe 5.2. The horizontal partition wall 100z is in Figure 9 same as in Fig. 3a as a plate. It can preferably be made of a different material than the body, preferably as a heat-insulating plate, e.g., a composite plate. However, it can also be made of metal or ceramic material. It can also be made of the same material as the body, e.g., concrete.

[0065] The design of Figures 3ff can be used in the embodiments of the Figure 1 and / or Figure 2 be realized.

[0066] In a preferred embodiment, all embodiments can include an exhaust gas purification system in the second chimney stage. However, this is not mandatory. The embodiments can be delivered with or without an exhaust gas purification system. List of reference symbols

[0067] SChimney 1 first chimney stage 1xFireplace 1xvClosing element of the fireplace, door 1xaOpening in the body 100 in the first chimney stage 1 1xbOpening in the body 100 in the first chimney stage 1 1xcAccess opening in the body in the first chimney stage 1 to the door of the fireplace 1x 2Second chimney stage 2sShut-off valve 2kBullet trap 3Third chimney stage 300Outer shell made of concrete body or casing stone 300sBase plate 320Screw anchor device 320sTensioning element 320aScrew anchor 330Fastening bracket 330aSafety dowel 340Screw anchor device 340aScrew anchor 340sTensioning element 4.2 Exhaust pipe in the second chimney stage, exhaust pipe 4.2öOpening in the exhaust pipe 4.2 4.3 Exhaust pipe in the third chimney stage, exhaust pipe 4.3i Insulation jacket 4.3 4.3a Connection socket 4.3ö Opening in 4.3 4.3m Socket pipe 4.3t Support ring 5.1Inlet air pipe (in chimney stage 1) 5.2Inlet air pipe (in chimney stage 2) 5.3Inlet air duct, inlet air duct (in chimney stage 3) 5.3aInlet air duct 20 Exhaust gas cleaning device, exhaust gas cleaning module 100 Concrete construction element, body 100k Head end of the body 100ka Recess 100h Cavity in 100 100ö Inspection opening in 100 100kg Convection grille 100öv Closure of the opening, door, flap 100z Partition wall in 100 120Prefabricated building element KConvection air flow RHeat radiation

Claims

1. A chimney, comprising: - a lower first chimney stage (1) with a fireplace, - a second chimney stage (2) arranged above the first chimney stage (1) with a first section (4.2) of an exhaust gas duct (4.2, 4.3) connected to the fireplace, - a third chimney stage (3) arranged above the second chimney stage (2) chimney stage (3) which is designed as an upper chimney and has a second section (4.3) of the exhaust gas duct (4.2, 4.3) connected to the first section (4.2) of the exhaust gas duct (4.2, 4.3) in order to conduct the exhaust gas vertically upwards out of the chimney into the open air, wherein it is provided - that the first chimney stage (1) and the second chimney stage (2) form a common structural unit which has a common body (100), - that the third chimney section (3) has a load-bearing outer shell (300) which surrounds a vertically extending interior space in which the second section (4.3) of the exhaust gas duct (4.2, 4.3) extends, - that the body (100) is designed as a concrete body which has a side wall which completely or partially surrounds a vertically extending interior space and has a head end (100k) which extends over the interior space. wherein it is provided a) that the head end (100k) of the body (100) is formed integrally with the side wall of the body and that the load-bearing outer shell (300) of the third chimney stage (3) is supported on the head end (100k) of the body (100) and connected to the head end (100k) of the body (100) by means of a fastening device, i) by the fastening device havaing a screw anchor device (320, 340) comprising tensioning elements (320s, 340s) which are guided and supported in the longitudinal direction of the outer shell (300) on or in the outer shell (300) and are anchored in the head end (100k) of the body (100) via screw anchors (320a, 340a) embedded in the head end (100k) 340a), and / or ii) by the fastening device having an angle device (330) comprising a first angle leg which is fixed to the outer shell (300) by means of a separate fastening element, such as a screw, and a second angle leg which is fixed to the head end (100k) of the body by means of separate fastening element, e.g. a screw; and / or iii) by the fastening device is formed by a protrusion and / or recess (100ka) on the upper side of the head end (100k) of the body (100), which cooperates in a form-fitting manner with the lower end of the outer shell (300), and b) that a horizontal partition wall (100z) is arranged in the body (100) which divides the cavity in the interior of the body (100) into a lower space and an upper space, the fireplace (IX) being arranged in the lower space and the first section (4.1) of the exhaust gas duct extending through the partition wall (100z) is arranged in the upper space.

2. The chimney according to claim 1, characterized in that the second section (4.3) of the exhaust gas duct (4.2, 4.3) accommodated in the third chimney stage (3) is designed as an exhaust gas pipe (4.3), preferably a ceramic pipe, which is supported on the head end (100k) of the body (100).

3. The chimney according to claim 2, characterized in that the exhaust pipe (4.3) cooperates at its lower end with a sleeve device which has a sleeve pipe (4.3m) which passes through the head end of the body (100) with its pointed end and receives the lower end of the exhaust pipe (4.3) with its sleeve end.

4. The chimney according to claim 3, characterized in that the sleeve pipe (4.3m) is supported on the head end (100k) of the body (100) by means of a support ring (4.3t), preferably a conical support ring, by the upper end of the support ring (4.3t) being attached to the outer side of the sleeve of the sleeve pipe (4.3m) and the lower end of the support ring (4.3t) being supported on the upper side of the head end (100k) of the body (100).

5. The chimney according to one of claims 2 to 4, characterized in that the exhaust pipe (4.3) of the third chimney stage (3) is composed of several sleeve pipes.

6. The chimney according to one of the preceding claims, characterized in that the supporting outer shell (300) of the third chimney stage (3) is supported directly on the head end (100k) of the body (100) or indirectly via a base plate (300s) on the head end (100k) of the body (100).

7. The chimney according to one of the preceding claims, characterized in that the outer shell (300) of the third chimney stage (3) is formed from several shell stones, preferably lightweight concrete shell stones, arranged one above the other, wherein the lowest shell stone has an adjacent base plate (300s) on its underside, and the base plate (300s) is connected to the shell stones via a tensioning device (340).

8. The chimney according to claim 7, characterized in that the clamping device has clamping elements (340s) which are guided and supported in the longitudinal direction of the shell stones on or in the wall of the shell stones and are anchored in the base plate (300s) via screw anchors (340a), or the tensioning elements (340s) pass through the base plate (300s) and are anchored in the head end (100k) of the body (100) via screw anchors (340a).

9. The chimney according to any of claims 6 to 8, characterized in that the fastening device, which according to ii) of claim 1 has an angle device (330), is designed such that the first angle leg is fixed to the outside of the base plate (300s) by means of a separate fastening element, e.g. a screw, and the second leg is fixed to the head end (100k) of the body (100) via a separate fastening element, e.g. a screw.

10. The chimney according to any of claims 6 to 9, characterized in that the fastening device, which according to iii) of claim 1 is formed by a protrusion or recess (100ka) on the upper side of the head end (100k) of the body (100), cooperates in a form-fitting manner with the lower end of the base plate (300s).

11. The chimney according to one of the preceding claims, characterized in that the third chimney stage (3) has a supply air duct (5.3) which extends parallel and / or concentrically to the second section (4.2) of the exhaust gas duct and passes through the second chimney stage (2) and opens into the first chimney stage (1), supplying supply air to the fireplace.

12. The chimney according to claim 11, characterized in that the supply air duct (5.3) extends in the vertically extending interior space surrounded by the outer shell (300) of the third chimney stage and passes through the head end (100k) of the body (100).

13. The chimney according to claim 12, characterized in that the supply air duct (5.3) is led out laterally at the lower end of the outer shell (300) of the third chimney stage and further extends through an opening in the head end (100k) of the body (100).

14. The chimney according to one of the preceding claims, characterized in that the second chimney stage has an exhaust gas cleaning device.

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