EP3623702A1 - Solid fuel furnace flue duct - Google Patents

Abstract

Solid hearth furnace pipe (10) comprising a first connection section (12), an intermediate region (13), a second connection section (14), an exhaust pipe (20) and a cooling pipe (30), the intermediate region (13) being between the first and the second The connection section (12, 14) extends, the first connection section (12) being designed to be connected directly / indirectly to a solid fuel fireplace (2), the second connection section (14) being designed to be connected to a chimney (4) medium / to be connected directly, the exhaust pipe (20) in the first connection section (12) having an exhaust gas opening (22) which is designed to be indirectly / directly connected to an exhaust gas outlet of a solid fuel fire station (2), the exhaust pipe (20 ) in the second connection section (14) has an exhaust gas outlet opening (24) which is designed to be connected directly / indirectly to a chimney exhaust pipe, the cooling pipe (30 ) has a first cooling opening (32) in the first connection section (12) and a second cooling opening (34) in the second connection section (14), the interior (36) enclosed by the cooling pipe (30) being fluidly connected to the surroundings through the first cooling opening (32 ) and through the second cooling opening (34), the cooling pipe (30) surrounding the exhaust pipe (20), at least in the intermediate region (13), in particular concentrically.

Description

The invention relates to a solid hearth furnace tube, a solid hearth adapter piece, a cover plate and a solid hearth system.

Solid-state fire connection systems are already known from the prior art; these serve to connect a solid-state fire place, e.g. a wood-fired stove to be connected to a fireplace in such a way that the combustion gases can get into the fireplace from the fireplace. To achieve this connection to the fireplace and / or the fireplace, connection systems have at least one stovepipe. In addition, such systems can also comprise adapter pieces in order to achieve the connection of the stovepipe to the chimney or the connection of the stovepipe to the fireplace. The problem with the solid-state fire connection systems already known is that they can become very hot on the outside, so that there is a high risk of injury to people, among other things.

It is therefore an object of the present invention to provide a connection possibility for a solid fuel fireplace to a chimney, which has only a low risk of injury.

This object is achieved with a solid hearth furnace tube according to claim 1, with a solid hearth adapter piece according to claim 13, with a cover plate according to claim 14 and with a solid hearth system according to claim 15.

According to the invention, a solid-fuel fireplace stove pipe comprises a first connection section, an intermediate region, a second connection section, an exhaust pipe and a cooling pipe, the intermediate region extending between the first and the second connection section, the first connection section being designed to be central and / or at a solid-state fire station to be directly connected, the second connection section being designed to be connected to a chimney directly and / or directly, the exhaust pipe in the first connection section having an exhaust gas intake opening which is designed to connect a solid and / or or to be connected directly, the exhaust pipe in the second connection section having an exhaust gas outlet opening which is designed to be connected to a chimney exhaust pipe directly and / or indirectly, the cooling pipe in the first connection section having a first K having hlöffnung and second terminal section having a second cooling hole, wherein the space enclosed by the cooling tube interior is fluidically connected to the environment through the first cooling hole and through the second cooling hole, the cooling pipe, the exhaust pipe, at least in the intermediate region, surrounds, in particular concentrically. The solid hearth furnace pipe generally serves to connect a solid burning point to a chimney in such a way that exhaust gases from the solid burning point can get into the chimney. A solid fuel fireplace is a fireplace that is operated with solid fuels, such as coal, wood or pellets. The solid fuel fireplace can in particular be an oven, which can be found in the living rooms of detached houses. The chimney, with which the solid-fuel furnace pipe is connected indirectly and / or directly, can be the part of the building which serves to discharge the exhaust gas from the solid-fuel fireplace into the surroundings around the building. In other words, the solid hearth furnace pipe serves to guide the exhaust gases from a solid hearth into the chimney. For this purpose, the solid hearth furnace tube can be arranged horizontally, at least in regions, in an installed state. The solid hearth furnace pipe has a first connection section and a second connection section, between these two connection sections the intermediate area extends. The first connection section serves, in particular in an installed state, to be fixed and / or to be fixed at the solid-state fireplace and the second connection section serves, in particular in an installed state, to be connected to the chimney directly and / or indirectly. The solid hearth furnace pipe has an exhaust pipe which has an exhaust gas opening in the first connection section and an exhaust gas outlet opening in the second connection section. The exhaust pipe therefore serves to fluidly conduct the exhaust gases produced by the solid-state fireplace from the first connection section to the second connection section. For this purpose, the exhaust gas outlet opening is fluidly connected to a chimney exhaust pipe and the exhaust gas intake opening to an exhaust gas outlet of the fireplace. In other words, this means that the exhaust pipe fluidly connects the exhaust gas intake opening to the exhaust gas outlet opening. Fluidly connecting / conducting can mean, inter alia, that a fluid, in particular a channel, can flow from the receiving opening to the outlet opening. In particular, the exhaust pipe is designed such that its interior is fluidly connected only via an exhaust gas intake opening and an exhaust gas outlet opening, so that no exhaust gas can leave the exhaust pipe at other openings. In addition to the exhaust gas pipe, the solid-state fire-place furnace pipe also has a cooling pipe, which has a first cooling opening in the first connection section and a second cooling opening in the second connection section, and these cooling openings are designed to allow a fluid into or out of the interior space enclosed by the cooling pipe into the Environment can flow. In other words, this can mean that the interior enclosed by the cooling pipe is fluidly connected to the surroundings via the first cooling opening and the second cooling opening. In particular, the cooling tube is designed such that the interior of the cooling tube is fluidly connected to the surroundings only via the cooling openings. In particular, the cooling tube is not used to guide combustion air to the solid-fuel fireplace and / or to guide exhaust gases away from the solid-fuel fireplace. In this context, the environment is, in particular, the ambient air, in particular an interior, which surrounds the solid hearth furnace pipe. Advantageously, the cooling openings of the Cooling tube therefore in a single interior of a room. Appropriately, the cooling openings of the solid hearth furnace tube are a maximum of 1.2m, preferably a maximum of 1m, particularly preferably a maximum of 0.7m and particularly preferably a maximum of 0.6m, because the cooling openings of the cooling tube serve in particular exclusively to clean the interior of the cooling tube with the room air to connect the surrounding interior of a building. The cooling pipe and the exhaust pipe are arranged in such a way in the solid hearth furnace pipe that the cooling pipe surrounds the exhaust pipe at least in the intermediate area. In particular, the cooling pipe surrounds the exhaust pipe in such a way that these two pipes are arranged concentrically to one another at least in the intermediate region. The cooling pipe advantageously surrounds the exhaust pipe not only in the intermediate area, but also for the most part in the first connection section and / or in the second connection section. Surrounded in this context generally means that one tube completely or completely surrounds the other tube in the circumferential direction and / or in the longitudinal direction at least in regions, preferably for the most part, particularly preferably. For example, there is a surrounding if the interior of the cooling tube is a gap, in particular an annular gap, the volume / cross-section of which is limited on the outside by the cooling tube and on the inside by the exhaust pipe. Alternatively or additionally, surrounded can also mean that no fluid flow from the interior of the one tube into the other tube is possible, and that, moreover, the one tube is also covered by the other tube, at least in regions, preferably for the most part. Due to the surrounding of the exhaust pipe by the cooling pipe and the fluid flow taking place in the cooling pipe due to the heating, the cooling pipe on its outer skin is significantly cooler than the exhaust pipe. It is therefore not possible or difficult for a person, at least in the intermediate area, to touch the hot exhaust pipe, but only the significantly cooler cooling pipe, so that the risk of injury can be significantly reduced by using the cooling pipe.

Advantageously, the exhaust pipe extends in the first connection section along a first connection direction and / or the exhaust pipe extends in the second connection section along a second connection direction. This straightforward configuration of the first connection section along a first connection direction and / or of the second connection section along a second connection direction can significantly simplify the assembly of the solid-state fire stove pipe. In addition, this measure not only simplifies assembly, it can also simplify its manufacture, so that costs can be saved.

The intermediate region is expediently curved and / or straight. This can simplify the assembly of the solid hearth furnace tube. The intermediate region is advantageously designed in such a way that it is curved by an angle of 80 ° to 100 °. In this way it can be achieved that the solid hearth furnace pipe is already factory-adapted to most existing installation situations, so that costs can be saved during the final installation.

The exhaust pipe in the first connection section preferably projects above the cooling pipe in the direction of the first connection direction and / or the exhaust pipe projects in the second connection section in the direction of the second connection direction. This protrusion of the exhaust pipe relative to the cooling pipe makes assembly easier because the protruding part of the cooling pipe can be used as a type of guide unit. In this context, protruding means that the exhaust pipe extends further in the respective connection direction in the respective connection section than the cooling pipe. The ratio of the protruding length in the first and / or in the second connection direction to the average outside diameter of the exhaust pipe is preferably in a range from 0.55 to 0.75, because the applicant has surprisingly found that such a ratio is particularly intuitive Assembly for the fitter results, so that installation costs can be saved. The exhaust pipe preferably has an inspection opening. This inspection opening enables the stovepipe to be easily cleaned and / or inspected. In order to create a particularly high degree of accessibility, it is preferred if the inspection opening is arranged in the intermediate area, in particular in the curved part of the intermediate area. The inspection opening is advantageously designed such that it enables access to the interior of the exhaust pipe. However, the inspection opening particularly preferably does not allow access to the interior of the cooling tube. In other words, this can mean that the interior of the exhaust pipe can be fluidly temporarily connected to the surroundings through the inspection opening, but not the interior of the cooling tube. The inspection opening can expediently be closed by means of a closure element.

The exhaust pipe is expediently conical in the first connection section and / or the exhaust pipe is conical in the second connection section. This enables a particularly high sealing effect to be achieved in a simple manner. In addition, this measure can also achieve that expensive sealing elements can be saved, so that a particularly cost-effective solid-fuel furnace pipe is achieved. The conical section of the exhaust pipe is in particular designed such that it tapers or widens in the direction of the distal end of the first and / or the second connection section. In other words, this can mean that the cone - similar to an arrow - points away from or towards the intermediate region or from the respective connection section. The slope of the cone is advantageously in a range from 0.05 ° to 5 °, particularly in the range from 0.1 to 3 ° and particularly preferably in the range from 0.5 ° to 2.5 °. With a slope of the cone in the range of 0.05 ° to 5 °, a particularly high sealing effect can be achieved. In order to achieve a particularly easy assembly of the solid hearth furnace tube, the slope of the cone should be in a range from 0.1 ° to 3 °. Surprisingly, the applicant has found that the cone is particularly easy to manufacture if its slope is in the range between 0.5 ° to 3 °, so that a particularly cost-effective solid-fuel furnace pipe results.

The cooling pipe expediently surrounds the exhaust pipe in the first connection section and / or in the second connection section at least in regions, preferably for the most part, in particular concentrically. This can further reduce the risk of injury. In particular, there is at least one cross section in which the cooling pipe completely surrounds the exhaust pipe in the first and / or in the second connection section, in particular concentrically.

The cooling pipe and / or the exhaust pipe preferably consists at least for the most part, in particular completely, of stainless steel or black plate. In this way, a particularly high temperature-resistant solid hearth furnace pipe can be achieved.

At least one support element, preferably a plurality of support elements, in particular in the interior of the cooling tube, is advantageously arranged between the exhaust pipe and the cooling pipe. In this way, a particularly space-saving and mechanically resilient support of the cooling pipe with respect to the exhaust pipe can be achieved. Advantageously, the support elements are integrally connected, in particular by means of a weld seam, to the exhaust pipe and / or to the cooling pipe. It is particularly expedient to achieve simple and inexpensive manufacture if the support elements are arranged in the first connection section and / or in the second connection section. Additionally or alternatively, the support elements are arranged uniformly in the circumferential direction and / or in the longitudinal direction. The circumferential direction is the circumferential direction around the longitudinal direction. In this context, the longitudinal direction is to be understood in particular as the direction of connection from the first connection section to the second connection section, this connection direction not necessarily always having to be straight. In other words, the longitudinal direction can be the direction which corresponds to the mean flow direction in the cross section, in particular within the exhaust pipe, for a flow from the first connection section to the second connection section.

The ratio of the diameter of the exhaust pipe to the diameter of the cooling pipe is advantageously in a range from 0.5 to 0.95, preferably in a range from 0.6 to 0.85 and particularly preferably in a range from 0.7 to 0 ,8th. The relevant diameter is the inside diameter or the outside diameter of the respective pipe. In the case of a non-circular cross section, the diameter is the diameter of the smallest possible circle, which just surrounds the inside / outside contour of the relevant pipe cross section. With a ratio of the diameter of the exhaust pipe to the diameter of the cooling pipe in the range from 0.5 to 0.9, a particularly good cooling effect can be achieved. In order to achieve a simple manufacture of the solid-state fire hearth furnace pipe, the ratio of the diameter of the exhaust pipe to the diameter of the cooling pipe is in the range from 0.6 to 0.85. In order to achieve a particularly compact solid hearth furnace pipe, the ratio of the diameter of the exhaust pipe to the diameter of the cooling pipe should be in a range from 0.7 to 0.8.

The exhaust pipe and / or the cooling pipe expediently has a round, in particular circular, cross section, in particular in the first connection section and / or in the second connection section. A round cross section is given, among other things, if the inner and / or the outer contour of the cross section is round, at least in some areas. For example, a round cross-section is given, among other things, if this cross-section has an elliptical or circular inner and / or outer contour. In other words, this can mean that the exhaust pipe and / or the cooling pipe can be round pipes at least in the first connection section and / or in the second connection section. Due to the at least regionally round cross section of the exhaust pipe and / or the cooling pipe, a particularly advantageous ratio between Shell surface and enclosed volume or enclosed area can be achieved, so that material can be saved.

Advantageously, the solid hearth furnace pipe comprises a third pipe, the third pipe having a supply air receiving opening and a supply air outlet opening, the supply air receiving opening being arranged in the second connection section, the third pipe surrounding the cooling pipe, at least in the second connection section, in particular concentrically. The supply air intake opening is designed so that supply air can flow into the third pipe and there is fluidly conducted through the inner area enclosed by the third pipe to the supply air outlet opening. This inner area enclosed by the third tube is at least partially limited or enclosed by the third tube, in particular to the outside, and by the cooling tube, in particular to the inside.

In other words, the solid hearth furnace pipe can not only be designed to fluidly guide exhaust gases or combustion exhaust gases from the solid hearth furnace to the chimney, but in addition, the solid hearth furnace pipe can also serve to guide supply air or combustion air to the solid hearth furnace, in particular from the fireplace. This means that the solid-fuel fire stove pipe can also be used for solid-fuel fireplaces that are independent of room air. By surrounding the cooling tube with the third tube, not only can the risk of burns be further reduced, but it is also additionally achieved that the supply air is particularly cool, so that it has a particularly high density. It is particularly preferred if the third tube not only surrounds the cooling tube in the second connection section, but additionally also surrounds the cooling tube in the intermediate area and / or in the first connection section.

The third tube is expediently formed by cohesively joined components. This results in a particularly simple and inexpensive manufacture of the third tube or the solid-state furnace tube, so that costs can be saved. Alternatively or additionally, the cooling pipe and / or the exhaust pipe can also be formed from integrally joined components. Through the integral, especially by welding, joined Components results in a particularly inexpensive exhaust pipe and / or cooling pipe.

The third tube preferably surrounds the cooling tube in the first connection section and / or in the intermediate region. This can further increase the safety of the solid hearth furnace pipe.

The third tube preferably consists at least for the most part, in particular completely, of stainless steel or black plate. In this way, a particularly high temperature-resistant third tube can be achieved. In addition, the use of stainless steel or black plate also has the advantage that the third tube can withstand high mechanical loads.

The third tube preferably has at least one connection opening, a connection line fluidly connecting the first cooling opening or the second cooling opening to the connection opening. In other words, this can mean that at least one connecting line, in particular a plurality of connecting lines, extends through the interior enclosed by the third tube, which fluidically connects the first cooling opening or the second cooling opening to a connecting opening of the third tube. This ensures that a fluid can flow from the environment into the cooling tube. For example, a fluid can therefore flow from the surroundings through the connection opening, the connection line and then through the first or the second cooling opening in order to get into the interior of the cooling tube. This allows air to flow in or out of the interior of the cooling tube into the environment in a simple manner. In addition, these connecting lines can also serve to fix or store the third pipe relative to the cooling pipe. It is particularly preferred if there are a large number of connecting lines. As a result, the cooling capacity of the solid-fuel furnace tube can be increased further.

In a preferred embodiment, the ratio of the diameter of the exhaust pipe to the diameter of the third pipe is in a range from 0.3 to 0.8, preferably in a range from 0.4 to 0.7 and particularly preferably in a range from 0 , 5 to 0.65. In order to achieve a particularly high cooling effect, the ratio should be in a range from 0.3 to 0.8. With a ratio in the range from 0.4 to 0.7, a particularly advantageous ratio between the material used results in relation to the cooling effect, so that a relatively inexpensive solid-fuel furnace tube results. With a ratio of the diameter of the exhaust pipe to the diameter of the third pipe in the range from 0.5 to 0.65, a particularly space-saving solid hearth furnace pipe results.

Another aspect of the invention relates to a solid hearth adapter, comprising a first connecting section and a second connecting section, the first connecting section being designed to be fixed to a fireplace and / or to a solid hearth, the second connecting section being designed to be connected to a solid hearth furnace pipe , in particular a solid hearth furnace pipe according to the invention. In other words, the solid-state fire adapter piece therefore serves in particular to be arranged between the solid-hearth furnace pipe and a chimney or a solid-state fire station and the solid-hearth furnace pipe. The solid hearth adapter piece can simplify the connection of the solid hearth furnace pipe to the fireplace and / or to the fireplace, since the interface available for the solid hearth furnace pipe is clearly defined by the solid hearth furnace adapter piece, so that the solid hearth furnace pipe can be used in many - possibly fundamentally different - installation situations . The first connecting section of the solid-state fireplace adapter piece serves to achieve a mechanical and / or fluidic connection to the chimney and / or to the solid-oxide fireplace. The second connecting section of the solid-state fireplace adapter piece, on the other hand, serves to establish a mechanical and / or a fluidic connection between the Solid hearth adapter and the solid hearth furnace pipe.

In an advantageous embodiment, an exhaust gas cross section and an air supply cross section are present in the first connection section and / or in the second connection section, the supply air cross section surrounding the exhaust gas cross section, in particular concentrically. The supply air cross section, in particular the supply air ring cross section, is the cross section of the solid-state fireplace adapter piece through which the supply air flows during operation. The exhaust gas cross section is in particular the cross section through which the exhaust gases from the fireplace flow in the first connecting section and / or in the second connecting section. In other words, the solid-state fireplace adapter piece in the first connecting section and / or in the second connecting section is designed in such a way that - like the solid-hearth furnace pipe - the cross section through which the supply air flows to the fireplace surrounds the flow cross section which fluidically (away) guides the exhaust gases. This type of design of the solid-state fireplace adapter piece can increase the cooling capacity of the solid-fire fireplace adapter piece and also its safety.

In an advantageous embodiment, the solid-state fire adapter piece has a third connecting section, the third connecting section being spaced apart from the first and second connecting sections, the third connecting section having a flow opening, the flow opening being fluid with the supply air cross section or with the exhaust gas cross section in the first connecting section or in the second Connection section is connected. In other words, this can mean that the solid-state fireplace adapter piece has, in addition to the connection options in the first connecting section and in the second connecting section, a third connecting section, the third connecting section being used to guide supply air into the solid-fire fireplace adapter piece and / or to discharge exhaust gases therefrom. The provision of a third connecting section results in a solid-state fireplace adapter piece, which has a high variability with regard to the possible installation situations. In particular, it can thereby be achieved that already existing systems can be retrofitted with a solid fire adapter piece according to the invention and / or a solid fire stove pipe according to the invention, so that the risk of burns can also be reduced in existing systems.

A further aspect of the invention relates to a cover plate, the cover plate comprising a collar area and a fixing section, the collar area having and / or forming a, in particular circular, opening, the collar area having a conical outer contour projecting away from the fixing section, the conical collar area is designed to be connected to a solid hearth furnace tube, in particular to a third tube of a solid hearth furnace tube, or to a solid hearth adapter piece. The collar area of the cover plate protrudes in particular away from the fixing section and is also conical. The opening, which is arranged in the collar area, serves to be able to lead exhaust gases and / or supply air through the cover plate. The fixing section of the cover plate, however, serves to arrange it on a chimney and / or a building wall. Through the use of this cover plate, it is particularly easy to install, in particular, a solid-state fire oven pipe according to the invention or, in particular, a solid-fire fireplace adapter piece. In order to simplify production, the fixing section of the cover plate is preferably rectangular or square. In order to simplify the assembly of the cover plate, holes are advantageously provided in the fixing section in order to easily place or receive fixing means.

A further aspect of the invention relates to a solid-fuel fire system comprising a solid-fuel fire place and a solid-fire stove pipe, in particular according to the invention. This makes it possible for the solid fuel fire system has the advantages that can be brought about by the solid hearth furnace tube. The solid fuel fireplace can be, for example, an oven fired with wood, coal and / or pellets.

In an advantageous embodiment, the solid-state fire-set system also comprises a solid-state fire-place adapter piece and / or a cover plate.

In a preferred embodiment, the solid fuel fireplace has a base and a cover, the cover having an exhaust gas outlet. The floor of the solid-fuel fireplace is in particular the area by means of which the solid-fuel fireplace is set up on a surface. The lid of the solid fuel fireplace, on the other hand, delimits the solid fuel fireplace distally opposite the floor. The exhaust gas outlet serves, in particular, to ensure that exhaust gases can escape from the interior or from the combustion chamber of the solid-state fireplace. The arrangement of the exhaust gas outlet in the lid and the use of a solid-state fire oven tube according to the invention make it possible to arrange the solid-state fire-place variably, without complex adjustments, in particular by rotating about the vertical axis of the solid-state fire place.

In a preferred development, the cover has a combustion air supply opening, the combustion air supply opening surrounding the exhaust gas outlet, in particular concentrically. The combustion air supply opening serves, in particular, to allow supply air to get into the interior or into the combustion chamber of the solid-state fireplace. As a result, a high degree of installation variability can be achieved even with a solid-fuel fireplace that is independent of ambient air.

In an advantageous embodiment, the solid-state fireplace has a body which comprises the base and the lid, the body being predominantly made of concrete. This results in a particularly inexpensive and mechanically resilient solid fuel fireplace.

Further advantages and features of the present invention result from the following description with reference to the figures. Individual features of the illustrated embodiments can also be used in other embodiments, unless this has been expressly excluded.

Fig. 1

eine perspektivische Ansicht eines erfindungsgemäßen Feststofffeuerstellenofenrohrs;

Fig. 2

eine Seitenansicht einer weiteren erfindungsgemäßen Ausführungsform eines Feststofffeuerstellenofenrohrs;

Fig. 3

eine Schnittansicht eines erfindungsgemäßen Feststofffeuerstellenofenrohrs;

Fig. 4

ein erfindungsgemäßes Feststofffeuerstellensystem;

Fig. 5

eine erfindungsgemäße Abdeckplatte;

Fig. 6

eine perspektivische Ansicht einer erfindungsgemäßen Abdeckplatte und

Fig. 7

ein erfindungsgemäßes Feststofffeuerstellenadapterstück.

Show it

Fig. 1

a perspective view of a solid hearth furnace tube according to the invention;

Fig. 2

a side view of another embodiment of a solid hearth furnace tube according to the invention;

Fig. 3

a sectional view of a solid hearth furnace tube according to the invention;

Fig. 4

a solid fuel fire system according to the invention;

Fig. 5

a cover plate according to the invention;

Fig. 6

a perspective view of a cover plate according to the invention and

Fig. 7

a solid fireplace adapter according to the invention.

In the Figure 1 A solid hearth furnace tube 10 according to the invention is shown. The solid hearth furnace pipe 10 has a first connection section 12, an intermediate region 13 and a second connection section 14. The third pipe 40 forms an outer jacket of the solid hearth furnace pipe 10. This third pipe 40 has a supply air intake opening 42 in the second connection section 14. Through the supply air intake opening 42, supply air can enter the interior 41 of the third pipe 40, which is formed between the third pipe 40 and the cooling pipe 30. The third tube 40 is composed of three integral components. The third pipe 40 surrounds or jackets the cooling pipe 30, which in turn surrounds or jackets the exhaust pipe 20. In the second connection section 14, the exhaust pipe 20 projects beyond both the cooling pipe 30 and the third pipe 40.

In the Figure 2 A further embodiment according to the invention of a solid hearth furnace tube 10 is shown, which in principle corresponds to that in FIG Figure 1 illustrated embodiment can fit. The solid hearth furnace pipe 10 has an exhaust pipe 20, which is surrounded concentrically by the cooling pipe 30. The cooling tube 30 is also surrounded concentrically by the third tube 40. A connecting line 48 penetrates the interior 41 of the third pipe 40, which therefore creates a fluidically conductive connection between the surroundings and the second cooling opening 34, so that air from the surroundings enters the interior 36 of the cooling pipe 30 enclosed by the cooling pipe 30 and the exhaust pipe 20 can reach. In order to allow air to flow into the connecting line 48, the third tube 40 has a large number of connecting openings 46.

In the Figure 3 is a section of AA from the in the Figure 2 shown embodiment shown.

The solid hearth furnace tube 10 has an intermediate region 13 which is arranged between the first connection section 12 and the second connection section 14 and is curved by 90 °. In addition, the solid hearth furnace pipe 10 has an internally arranged exhaust pipe 20, a cooling pipe 30 surrounding it and an outer third pipe 40 which surrounds the cooling pipe 30.

The exhaust pipe 20 has an exhaust gas opening 22 in the first connection section 12 and an exhaust gas opening 24 in the second connection section 14. The exhaust gas opening 22 and the exhaust gas opening 24 are fluidly connected to one another by the interior 28 of the exhaust pipe 20, so that an exhaust gas flow AB from the exhaust gas opening 22 can flow to the exhaust outlet opening 24. In the second connection section 14, the exhaust pipe 20 has a diameter D20.

The exhaust pipe 20 is supported by the support element 26 with respect to the cooling pipe 30, the cooling pipe 30 concentrically surrounding the exhaust pipe 20 both in the intermediate section 13, in the first connection section 12 and in the second connection section 14. The cooling tube 30 has a first cooling opening 32 in the first connection section 12 and a second cooling opening 34 in the second connection section 14. The first cooling opening 32 and the second cooling opening 34 are each fluidically connected to the environment via a connecting line 48 and connecting openings 46. It is thus possible that a convective cooling flow can form between the first and second cooling openings 32, 34 as a result of the heat generated during operation, so that the cooling pipe 30 is significantly cooler on its outside than the exhaust pipe 20.

The third pipe 40 is supported with respect to the cooling pipe 30 by the connecting lines 48. Air can flow through the connection opening 46 in the first connection section 12 from the surroundings through the connection lines 48 and through the first cooling opening 32 into the interior 36 of the cooling pipe 30 formed between the cooling pipe 30 and the exhaust pipe 20 and form a cooling air flow KU there. The air or the cooling air flow KU can then flow through this interior space 36 of the cooling pipe 30 to the second cooling opening 34 and flow through the connecting line 48 and the slot-like connecting openings 46 into the surroundings.

In an operating state, in the interior 41 of the third pipe 40 formed between the third pipe 40 and the cooling pipe 30, supply air ZU flows through the supply air receiving opening 42 to the supply air outlet opening 44.

In the first connection section 12, both the exhaust pipe 20, the cooling pipe 30 and the third pipe 40 extend in the first connection direction A1. In the second connection section 14, however, the exhaust pipe 20, the cooling pipe 30 and the third pipe 40, however, extend in the second connection direction A2. The first connection direction A1 is perpendicular to the second connection direction A2. In the second connection section 14, the exhaust pipe 20 has a diameter D20, the cooling pipe 30 has a diameter D30 and the third pipe 40 has a diameter D40.

In the Figure 4 A solid fuel fire system 1 is shown. This includes, on the one hand, a solid-fuel fireplace 2 and a solid-hearth furnace tube 10. The solid-fuel fireplace 2 is connected to the chimney 4 via the solid-hearth furnace tube 10. The solid hearth furnace tube 10 is connected to the cover 6 of the solid hearth 2.

In the Figure 5 A connection situation of a solid hearth furnace pipe 10 to a chimney 4 is shown. For this purpose, in the installation situation shown, a cover plate 70 is arranged between the chimney 4 and the third pipe 40 of the solid hearth furnace pipe 10. The cover plate 70 has a fixing section 78 for fixing to the chimney 4.

In the Figure 6 A cover plate 70 according to the invention is shown. The cover plate 70 has a collar area 72 and a fixing section 78. The fixing section 78 serves to fix the cover plate relative to a chimney. The cantilever area 72 of the cover plate 70 has an opening 74 or forms an opening 74.

In the Figure 7 A solid fireplace adapter 50 according to the invention is shown. The solid fire adapter piece 50 here comprises a first connecting section 51 and a second connecting section 52, the first connecting section 51 being designed to be fixed to a chimney 4 and / or to a solid burning fireplace 2. The second connecting section 52, on the other hand, is designed to be fixed to a solid hearth furnace tube 10. In the first connection section 51 and in the second connection section 52, the solid-state fire adapter piece 50 has an exhaust gas cross section 54 and an air supply cross section 56. An exhaust gas flow can be passed through the exhaust gas cross section 54 and a supply air flow through the supply air cross section 56 Flux solid hearth adapter 50. In the embodiment shown, the exhaust gas cross section 54 is surrounded concentrically by the supply air cross section 56 over the entire length of the solid-state fireplace adapter piece 50.

Reference list

1

- Solid fuel fire system

2nd

- Solid fuel fireplace

4th

- Stack

5

- Ground

6

- lid

10th

- Solid hearth furnace pipe

12th

- first connection section

13

- intermediate area

14

- second connection section

20th

- exhaust pipe

22

- Exhaust gas intake opening

24th

- Exhaust outlet

26

- support element

28

- Interior of the exhaust pipe

30th

- cooling pipe

32

- first cooling opening

34

- second cooling opening

36

- Interior of the cooling tube (30)

40

- third tube

41

- Interior of the third tube

42

- Air intake opening

44

- Supply air outlet opening

46

- Connection opening

48

- connecting line

50

- Solid-state fire adapter piece

51

- first connecting section

52

- second connecting section

54

- Exhaust cross section

56

- Supply air cross section

70

- cover plate

72

- cantilever area

74

- Breakthrough

78

- fixing section

A1

- first connection direction

A2

- second connection direction

FROM

- exhaust gas flow

D20

- diameter of the exhaust pipe

D30

- diameter of the cooling pipe

D40

- diameter of the third tube

KU

- cooling air flow

TO

- supply air

Claims (15)

Solid hearth furnace pipe (10) comprising a first connection section (12), an intermediate region (13), a second connection section (14), an exhaust pipe (20) and a cooling pipe (30),
the intermediate region (13) extending between the first and the second connection section (12, 14),
wherein the first connection section (12) is designed to be connected directly / indirectly to a solid-state fireplace (2),
the second connection section (14) being designed to be connected directly / indirectly to a chimney (4),
wherein the exhaust pipe (20) has an exhaust gas opening (22) in the first connection section (12), which is designed to be indirectly / directly connected to an exhaust gas outlet of a solid fuel fireplace (2), the exhaust pipe (20) in the second connection section (14 ) has an exhaust gas outlet opening (24) which is designed to be connected directly / indirectly to a chimney exhaust pipe,
wherein the cooling tube (30) has a first cooling opening (32) in the first connection section (12) and a second cooling opening (34) in the second connection section (14),
the interior space (36) enclosed by the cooling pipe (30) being fluidly connected to the surroundings through the first cooling opening (32) and through the second cooling opening (34),
wherein the cooling pipe (30) surrounds the exhaust pipe (20), at least in the intermediate region (13), in particular concentrically. Solid hearth furnace tube (10) according to claim 1,
wherein the exhaust pipe (20) extends in the first connection section (12) along a first connection direction (A1),
wherein the exhaust pipe (20) extends in the second connection section (14) along a second connection direction (A2). Solid hearth furnace tube (10) according to one of the preceding claims,
the intermediate region (13) being curved and / or straight. Solid hearth furnace tube (10) according to one of the preceding claims,
wherein the exhaust pipe (20) in the first connection section (12) projects beyond the cooling pipe (30) in the direction of the first connection direction (A1) and / or the exhaust pipe (20) in the second connection section (14) extends over the cooling pipe (30) in the direction of the second Connection direction (A1) protrudes. Solid hearth furnace tube (10) according to claim 4,
the ratio of the outstanding length in the first and / or in the second connection direction (A1, A2) to the mean outer diameter (D20) of the exhaust pipe (20) being in a range from 0.55 to 0.75. Solid hearth furnace tube (10) according to one of the preceding claims,
wherein the exhaust pipe (20) is conical in the first connection section (12) and / or
wherein the exhaust pipe (20) is conical in the second connection section (14). Solid hearth furnace tube (10) according to one of the preceding claims,
wherein the cooling pipe (30) surrounds the exhaust pipe (20) in the first connection section (12) and / or in the second connection section (14) at least in regions, preferably for the most part, in particular concentrically. Solid hearth furnace tube (10) according to one of the preceding claims,
the ratio of the diameter (D20) of the exhaust pipe (20) to the diameter (D30) of the cooling pipe (30) in a range from 0.5 to 0.95, is preferably in a range from 0.6 to 0.85 and particularly preferably in a range from 0.7 to 0.8. Solid hearth furnace tube (10) according to one of the preceding claims,
wherein the exhaust pipe (20) and / or the cooling pipe (30), in particular in the first connection section (12) and / or in the second connection section (14), have a round, in particular circular, cross section. Solid hearth furnace tube (10) according to one of the preceding claims,
wherein the solid hearth furnace tube (10) comprises a third tube (40), the third tube (40) having an inlet air receiving opening (42) and an inlet air outlet opening (44),
the supply air intake opening (42) being arranged in the second connection section (14),
wherein the third tube (40) surrounds the cooling tube (30), at least in the second connection section (14), in particular concentrically. Solid hearth furnace tube (10) claim 10,
wherein the third tube (40) surrounds the cooling tube (30) in the first connection section (12) and / or in the intermediate area (13). Solid hearth furnace tube (10) according to one of claims 10 to 11,
the ratio of the diameter (D20) of the exhaust pipe (20) to the diameter (D40) of the third pipe (40) in a range from 0.3 to 0.8, preferably in a range from 0.4 to 0.7 and is particularly preferably in a range from 0.5 to 0.65. Solid fireplace adapter piece (50) comprising a first connecting section (51) and a second connecting section (52),
wherein the first connecting section (51) is designed to be fixed to a chimney (4) and / or to a solid fuel fireplace (2),
wherein the second connecting section (52) is designed to be fixed to a solid-fuel furnace tube (10), in particular a solid-fuel furnace tube (10) according to one of the preceding claims. Cover plate (70) comprising a cantilever area (72) and a fixing section (78),
wherein the cantilever area (72) has an, in particular circular, opening (74),
wherein the cantilever region (72) has a conical outer contour projecting away from the fixing section (78),
wherein the conical cantilevered area (72) is designed to be connected to a solid-hearth furnace tube (10), in particular to a third tube (40) of the solid-hearth furnace tube (10), or to a solid-hearth adapter piece (50) according to claim 13. Solid fuel fire system (1) comprising a solid fire pit (2) and a solid fire pit tube (10) according to any one of claims 1 to 12.

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