Device for placement on a fireplace

Abstract

Device for arranging on orInsertion into a chimney (12), comprising a first pipe (1), a second pipe (2), and a housing (3) at least partially enclosing both pipes (1; 2), wherein the housing (3) forms a cavity (11) enclosed by the housing (3), wherein the first pipe (1) runs completely through the housing (3) or the first pipe (1) is positively connected to the housing (3), wherein the first pipe (1) projects beyond the housing (3) on two sides (4, 5) of the housing (3), wherein the first pipe (1) has a first opening (7) in its wall (6), wherein the first opening (7) opens into the cavity (11) inside the housing (3) or the housing (3) rests on or is placed on the first pipe (1), enclosing the first opening (7), the second pipe (2) opens into the housing (3) into its cavity (11), the second pipe at the protrudes from the housing (3) at the opening side (4), and at the second tube (3), at the end (8) of which a pull regulator (9) is arranged.

Description

[0001] The present invention relates to an arrangement for attaching to or inserting into a chimney with the features of claim 1. The device serves to equalize pressure differences in fireplaces. background

[0002] When operating combustion appliances such as gas boilers, oil boilers, condensing boilers, wood-burning boilers, or fireplaces, pressure differences sometimes occur between the outside air pressure and the air pressure in the chimney, due to atmospheric conditions. This can be caused, for example, by fluctuations in air pressure or changes in the weather. If this results in negative chimney pressure, it can be difficult to light the fireplace, and carbon monoxide can also enter the room. State of the art

[0003] This problem has been known for a long time and is solved by using an inspection hatch in the chimney and a draft regulator.

[0004] Fireplaces are designed to ensure a minimum draft, also known as draft pressure, in the chimney where the exhaust gases are introduced. However, the fireplace and its flue system often create a greater negative pressure in the chimney than actually required, resulting in higher energy consumption and inefficient operation. A draft regulator prevents this.

[0005] From DE 1241028 A, it is known to provide a flue pipe between a combustion chamber and a chimney. A branch pipe for secondary air intake is provided, as well as a flue gas damper and a pivotable secondary air damper. The free end of the branch pipe runs parallel to the flue pipe and along a common axis within the flue pipe that penetrates both pipes. The flue gas damper is located in the flue pipe, and the secondary air damper is located in the branch pipe between the draft regulator and the chimney.

[0006] An automatic draft regulator is known from DE 1 290 286 A. The automatic draft regulator consists of a closed housing with an inlet opening connected to a furnace and an opposite outlet opening, as well as a third opening connected to the chimney. A control flap, freely rotatable on an axis, is arranged within the closed housing. This flap can rotate continuously in its own plane and is connected to a part exposed to the negative pressure in the chimney and atmospheric pressure via the third opening. The outlet opening, omitting the third opening, is connected directly to the chimney, and the inlet opening is connected directly to the furnace flue. The part connected to the control flap forms a shut-off element for the closed housing.

[0007] From DE 1884002 U, a connection device for room stoves is known, which serves to adapt an existing connection opening in the chimney to the flue gas connection opening of the stove. The connection device for room stoves consists of a housing and two parallel-axis pipe connections attached to the housing, one of which connects to the stove and the other to the chimney. One of the pipe connections, e.g., the chimney connection, is located on a housing wall that is rotatably or slidably guided within the rest of the housing.

[0008] From DE 10 2016 209 077 A1 a control flap actuation mechanism for a draft regulator and a draft regulator equipped therewith are known.

[0009] The control damper mechanism for a pull regulator consists of a frame that separates a first chamber from a second chamber. A gas passage opening is provided, the gas permeability of which is varied by means of a control damper depending on the pressure difference between the chambers separated by the frame. The control damper mechanism is formed from a single, integrated assembly that can be mounted together and comprises at least the following components: - a bracket to be permanently attached to the frame with a pivot bearing defining a pivot axis, a lever mechanism held on the pivot bearing for rotation about the pivot axis with an adjusting weight lever, - a ballast weight lever and a control flap lever which is prepared for connection with or connected to the control flap, so that the control flap in the intended installation state of the control flap actuating mechanism in the pull regulator can pivot about the pivot axis between a closed position closing the gas passage opening and a position of maximum release of the gas passage opening, - wherein the adjusting weight lever has an adjusting weight that can be set to different adjusting positions and serves to influence the response behavior of the control damper with regard to pressure differences between the space areas separated by the frame, depending on the position of the adjusting weight on the adjusting weight lever, - wherein the ballast weight lever includes or is formed by a ballast weight and is designed to exert a moment on the lever mechanism that tends to load the control flap towards its closed position.

[0010] From EP 1 479 972 A1, a draft regulator with a visible control flap as a pressure-differential-dependent closing element for a secondary air inlet opening of an exhaust pipe is known. The opening width of the secondary air inlet opening is changed depending on the difference prevailing in the area of ​​the secondary air inlet opening between the pressure in the outside and the pressure inside the exhaust pipe. The draft regulator has an external side which, when the draft regulator is installed, faces the outside of the exhaust pipe and has a cover for the control flap arranged on this external side. An air supply line is provided for supplying air into the interior of the cover.

[0011] A disadvantage according to the known state of the art is that, firstly, a large installation space is required to integrate a draft regulator into the chimney, or secondly, two openings must be made in the chimney: one for access to the chimney for the exhaust pipe and one for access to the chimney for the draft regulator. Task

[0012] It is therefore the object of the present invention to avoid the aforementioned disadvantages. Solution

[0013] The problem is solved by the technical features specified in claim 1.

[0014] Advantageous further training opportunities can be found in the sub-requirements.

[0015] The device according to the invention is designed for placement on or insertion into a chimney and comprises a first pipe, a second pipe, and a housing that at least partially encloses both pipes. The housing forms a cavity enclosed by the housing. The first pipe either passes completely through the housing or is positively connected to the housing. The first pipe projects beyond the housing on two sides. The first pipe has a first opening in its wall, wherein the first opening opens into the cavity within the housing, or the housing rests on or is mounted on the first pipe, enclosing the first opening. The second pipe opens into the housing, into its cavity, and the second pipe projects out of the housing on the side of the housing that opens into the housing. A draft regulator is arranged at the end of the second pipe.

[0016] Since both the first and second pipes have an opening into the cavity of the housing, pressure differences between the chimney and the ambient air pressure can be exchanged, allowing ambient air to flow into the cavity via the second pipe. Because the draft regulator is located on the second pipe, the draft pressure in the chimney can thus be adjusted to the ambient air pressure.

[0017] The housing can either completely enclose both tubes, or it can completely enclose the second tube and be placed on the first tube, over its first opening, with one side having an opening to the cavity within the housing. In the first alternative, the device can thus be designed as a single component, while in the second alternative, it is designed as a component that is placed on the first tube, over its first opening, creating a connection between the cavity within the housing and the first tube. In this case, the housing is designed with a radius on the side that rests on the first tube, corresponding to the outer diameter of the first tube, so that the housing can be positively fitted onto the first tube.In this embodiment, a bracket with a radius corresponding to the outer diameter of the first tube is provided on the housing. This bracket can be connected to the housing and fixed to the first tube by means of a screw connection. Alternatively, or additionally, a connection between the housing and the first tube can be achieved by means of a bracket or adhesive bond, or by welding or soldering, creating a force-fit and / or form-fit connection between the housing and the first tube.

[0018] The device, by means of a fully automatic and maintenance-free pendulum cap integrated into the draft device, ensures consistently optimal draft conditions in the chimney and thus a higher efficiency of the fireplace.

[0019] The device is suitable for use with any type of central heating system with wood, coal, pellet, gas, oil, wood gasification or wood chip boilers.

[0020] Retrofitting is always possible without any problems.

[0021] A simple basic principle applies to every heating system with a chimney: Negative pressure in the chimney draws air into the boiler and simultaneously expels exhaust gases to the outside. However, if this negative pressure or draft becomes too high—for example, due to wind—the flue gases flow too quickly through the boiler, resulting in incomplete combustion. The consequences: increased pollutant emissions, decreased efficiency, and the loss of valuable heat from the boiler. This device provides a cost-effective and efficient solution: If the draft becomes too high, the draft regulator's pendulum damper opens, allowing air from the boiler room to flow into the chimney. This keeps the draft in the boiler constant at an optimal level.

[0022] The damper in the draft regulator opens even when the boiler is off, ventilating the chimney and thus retaining heat in the boiler. This continuous ventilation also prevents creosote buildup in the chimney, extending the lifespan of the entire heating system.

[0023] The draft regulator can be equipped with an explosion vent. This opens in the event of deflagrations, which can occasionally occur in the boiler. This prevents a short-term overpressure and thus also prevents damage to the heating system.

[0024] The pendulum damper is controlled by integrated precision ball bearings; internal and external regulating weights allow for a large and easily adjustable control range. A temperature-resistant seal minimizes unwanted flue gas leakage.

[0025] The device is easy to install, as it does not need to be inserted into the flue pipe via an additional opening to the chimney.

[0026] The device can either be placed on an existing flue pipe inserted into the chimney, in which case an opening must be made in the flue pipe through which the device is attached, or the flue pipe can be replaced by the device. The essential point is that only one opening or access to the chimney is required.

[0027] In an advantageous embodiment according to claim 2, the tension regulator is arranged at the end of the second tube that protrudes from the housing. This makes it easy to connect the tension regulator to the device or to position the tension regulator. Furthermore, good operability of the tension regulator is ensured.

[0028] In an advantageous embodiment according to claim 3, the device provides a connection between the first pipe and the second pipe within the housing, thus allowing the draft regulator to equalize the air pressure difference between the air pressure in the chimney, into which the first pipe opens, and the ambient air pressure at or outside the second pipe. To equalize the air pressure between the chimney and the ambient air pressure, a connection between the chimney and the environment is necessary. This is achieved through the cavity in the housing, as both the second and the first pipes provide access to it. The air pressure in the chimney is present in the cavity of the housing via the first pipe, as is the ambient air pressure or the air pressure outside the second pipe via the second pipe.The pressure difference can be equalized by means of the draft regulator, which is made possible by the connection between the chimney and the environment via the first pipe, the second pipe and the cavity in the housing.

[0029] In an advantageous embodiment according to claim 4, the housing, the first pipe, and the second pipe are provided to form a gas-tight seal or gas-tight enclosure at their outer walls. To prevent flue gas from escaping, the housing is provided to be gas-tightly sealed against the first and second pipes. This ensures that the equalization of air pressure between the chimney and the environment can only be regulated via the draft regulator.

[0030] In an advantageous embodiment according to claim 5, the second tube has a second opening in its wall, which opens into the cavity. The second tube has a second opening in its wall to provide even better air pressure equalization.

[0031] In an advantageous embodiment according to claim 6, the first pipe is provided to be part of an inspection hatch of a chimney. This allows the device to be designed in a particularly space-saving manner.

[0032] In an advantageous embodiment according to claim 7, the housing is designed so that its second housing side, which is opposite the housing side where the second pipe opens into the housing, lies almost flush against the chimney. This allows the device to be arranged directly against a chimney, thereby minimizing the required installation space.

[0033] In an advantageous embodiment according to claim 8, the housing and / or the first pipe provides a gas-tight enclosure or seal, and / or gas-tight closure, around the opening in the chimney through which the first pipe can be inserted. This prevents flue gas or exhaust gases from escaping from the chimney into the surrounding area via the opening through which the first pipe is inserted.

[0034] In an advantageous embodiment according to claim 9, the housing and / or the first tube and / or the second tube are made of stainless steel. This protects the device against pollutants contained in the flue gas and makes the device particularly durable.

[0035] In an advantageous embodiment according to claim 10, the first tube and / or the second tube are arranged parallel to each other and / or the diameter of the first tube and the diameter of the second tube are the same. This ensures rapid air pressure equalization. The device is easy to manufacture and has an aesthetically pleasing appearance.

[0036] In an advantageous embodiment according to claim 11, the tension regulator is screwed, clamped, or glued to the end of the second tube. The tension regulator is thus easy to install, can be replaced in case of a defect without having to replace the entire device, and at the same time a secure connection is established between the tension regulator and the second tube.

[0037] Further advantages, features and design possibilities will result from the following description of figures illustrating exemplary embodiments, which are not to be understood as restrictive. Brief description of the drawings

[0038] The drawings show: Fig. 1 a side view of the device; Fig. 2 a perspective view of the device; Fig. 3 another perspective view of the device; Fig. 4. Another perspective view of the device; and Fig. 5 A further perspective view of the device, arranged on a fireplace.

[0039] In the drawings, elements designated with the same reference numerals are essentially equivalent to one another, unless otherwise indicated. Furthermore, components that are not essential for understanding the technical teaching disclosed herein are not shown or described. Additionally, reference numerals are not repeated for all elements already introduced and illustrated, provided that the elements themselves and their function have already been described or are known to a person skilled in the art. Detailed description of exemplary implementations

[0040] In Fig. Figure 1 shows a side view of the device. The housing 3 has an internal cavity, in Fig. 1 not shown. Housing 3 is in Fig. Figure 1 shows an embodiment of the device in which the housing 3 is placed on the first tube 1. The housing 3 is open on the side where it rests on the first tube 1, on the wall 6 of which it is not located, or has an opening into the area not shown in Figure 1. Fig. The cavity in housing 3 is shown in Figure 1. The first tube 1 has a cavity in the area where the housing 3 rests on the wall 6 of the first tube 1 that is not shown in Figure 1. Fig. 1. Opening shown in wall 6.

[0041] The second pipe 2 does not lead into the Fig. 1. Cavity shown in housing 3. At the end 8 of the second tube 2 is the draft regulator, not in Fig. 1 is shown, placed on the second pipe 2 and connects it.

[0042] The first tube 1 and the second tube 2 extend beyond the housing side 4 of the housing 3. The first tube 1 also extends beyond the housing side 5 of the housing 3, which is opposite housing side 4.

[0043] Pipe 1 is inserted into the chimney with its end 13, not into Fig. 1 shown, introduced.

[0044] Both the first pipe 1 and the second pipe 2 have access to the one in Fig. 1. The cavity of the housing 3 (not shown) allows for an exchange of air pressure differences between the chimney and the ambient air pressure, for which purpose ambient air can flow into the cavity in the housing 3 via the second pipe 2. The second pipe 2 is connected to the Fig. One draft regulator (not shown) is arranged, which allows the delivery pressure in the chimney to be adjusted to the ambient air pressure by means of the draft regulator.

[0045] It can either completely enclose both tubes 1 and 2 with housing 3, or housing 3 can enclose as shown in Fig. 1 shown, the second tube is complete and is with a housing side that has an opening to the cavity in the housing 3, on the first tube 1, above whose first opening, which is not in Fig. Figure 1 shows the device, which is inserted into the wall 6 of the pipe 1. A connection exists between the cavity in the housing 3 and the first pipe 1, and thus between the chimney and the surroundings of the device.

[0046] In the design of the device according to Fig. In the design, the housing 3 is provided with a radius on the side that is to be placed onto the first tube 1. This radius corresponds to the outer diameter of the first tube 1, allowing the housing 3 to be fitted onto the first tube 1 in a form-fitting manner. A bracket with a radius corresponding to the outer diameter of the first tube 1 is provided on the housing 3. This bracket can be connected to the housing 3 and fixed to the first tube 1 by means of a screw connection. Alternatively, or additionally, a force-fit and / or form-fit connection between the housing 3 and the first tube 1 can be achieved by means of a bracket, an adhesive bond, or by welding or soldering.

[0047] The device is easy to install, as it does not need to be inserted into the flue pipe via an additional opening to the chimney.

[0048] The device can either be placed on an existing flue pipe inserted into the chimney, whereby an opening must be made in the flue pipe, which then corresponds to the first pipe 1, or it can be placed on the flue pipe via the housing 3, or the flue pipe can be replaced by the device.

[0049] The essential point is that only one opening or access to the chimney is required.

[0050] The first tube 1 and the second tube 2 extend beyond the housing side 4 of the housing 3. The first tube 1 also extends beyond the housing side 5 of the housing 3, which is opposite housing side 4.

[0051] Pipe 1 is inserted into the chimney with its end 13, not into Fig. 1 shown, introduced.

[0052] Fig. Figure 2 shows a perspective view of the device. The housing 3 has an internal cavity, in Fig. 2 not shown. Housing 3 is in Fig. Figure 2 shows an embodiment of the device in which the housing 3 is placed on the first tube 1. The housing 3 is open on the side where it rests on the first tube 1, on the wall 6 of which it is not located, or has an opening into the non-in Fig. The cavity in housing 3 is shown in Figure 2. The first tube 1 has a non-standard surface in the area where the housing 3 rests on the wall 6 of the first tube 1. Fig. 2 shown opening in wall 6.

[0053] The second pipe 2 does not lead into the Fig. The cavity shown in Figure 2 is located in the housing 3. The second pipe is gas-tightly sealed to the housing wall at housing side 4 of housing 4, through which the second pipe 2 penetrates the housing wall at housing side 4 of housing 3. The end 13 of the first pipe 1 opens into the chimney flue, not into Fig. 2 shown.

[0054] The first tube 1 extends beyond the housing 3 and its housing wall 5. At the tube end 8 of the second tube, it is provided that the tension regulator can be pushed onto this end over the wall 10 of the second tube 2 or alternatively pushed into it, neither of which is possible. Fig. 2 is shown, arranged.

[0055] In Fig. 3 and Fig. Figure 4 shows a further perspective view of the device.

[0056] The housing 3 has a cavity 11 inside. The housing 3 is in Fig. Figure 3 shows again an embodiment of the device in which the housing 3 is placed on the first tube 1. The housing 3 is open on the side where it rests on the first tube 1, on the wall 6 of which it has an opening to the cavity 11 in the housing 3.

[0057] The first tube 1, in turn, exhibits a non-standard feature in the area where the housing 3 rests on the wall 6 of the first tube 1. Fig. 3 shown opening in wall 6.

[0058] The second tube 2 opens into the cavity 11 in the housing 3. At the end 8 of the second tube 2 is the draft regulator, not in Fig. 3 shown, placed on the second pipe 2 and closes it off.

[0059] The first tube 1 and the second tube 2 in turn protrude beyond the housing side 4 of the housing 3.

[0060] Pipe 1 is inserted into the chimney with its end 13, not into Fig. 3 shown, to introduce.

[0061] In Fig. Figure 4 shows the opening 7 in the outer wall 6 of the first pipe 1. The first pipe 1 is shown in the diagram according to Fig. 4 is designed as a double-walled pipe. The opening 7 penetrates the double wall.

[0062] In Fig. Figure 5 shows another perspective view of the device, arranged on a fireplace.

[0063] The fireplace 12 is located behind the wall 14.

[0064] The housing 3 encloses the first tube 1 and the second tube 2.

[0065] The second pipe 2 does not lead into the Fig. The cavity in housing 3 is shown in Figure 5. The second pipe is gas-tightly sealed to the housing wall 4 of housing 4, through which the second pipe 2 penetrates the housing wall 4 of housing 3. The first pipe 1 opens into the flue of the chimney 12, which is located behind the wall 14.

[0066] The first pipe 1 therefore extends beyond the housing 3 in the direction of the chimney 12. The draft regulator 9 is arranged on the pipe end 8 of the second pipe 2.

[0067] Although the invention has been further illustrated and described in detail by the advantageous embodiments, the invention is not limited by the disclosed examples. Other variations can be derived by a person skilled in the art without departing from the scope of protection of the invention. In particular, the invention is not limited to the combinations of features specified below, but other combinations and partial combinations of the disclosed features that are obviously executable by a person skilled in the art can also be formed. Reference symbol list 1 first pipe 2 second pipe 3 cases 4. Housing side - both tubes protrude 5. Housing side - first tube protrudes 6 Wall of first pipe 7 Opening of first pipe 8 Pipe end second pipe 9 train regulators 10 Wall of second pipe 11 Cavity in the housing 12 fireplace 13 End of first pipe 14 Wall QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 1241028 A

[0005] DE 1 290 286 A

[0006] DE 1884002 U

[0007] DE 10 2016 209 077 A1

[0008] EP 1 479 972 A1

[0010]

Claims

Device for arranging on orInsertion into a chimney (12), comprising a first pipe (1), a second pipe (2), and a housing (3) at least partially enclosing both pipes (1; 2), wherein the housing (3) forms a cavity (11) enclosed by the housing (3), wherein the first pipe (1) runs completely through the housing (3) or the first pipe (1) is positively connected to the housing (3), wherein the first pipe (1) projects beyond the housing (3) on two sides (4, 5) of the housing (3), wherein the first pipe (1) has a first opening (7) in its wall (6), wherein the first opening (7) opens into the cavity (11) inside the housing (3) or the housing (3) rests on or is placed on the first pipe (1), enclosing the first opening (7), the second pipe (2) opens into the housing (3) into its cavity (11), the second pipe at the protrudes from the housing (3) at the opening side (4), and at the second tube (3), at the end (8) of which a pull regulator (9) is arranged. Device according to claim 1, characterized in that the tension regulator (9) is arranged at the end of the second tube (2) protruding from the housing (3). Device according to claim 1 or 2, characterized in that the device forms a connection between the first pipe (1) and the second pipe (2) inside the housing (3) and thus, via the draft regulator (9), an air pressure difference between the air pressure in the chimney into which the first pipe opens and the ambient air pressure at or outside the second pipe at the draft regulator (9) can be compensated. Device according to one of the preceding claims, characterized in that the housing (3) seals the first tube (1) and the second tube (2) gas-tight at its outer walls (6; 10) or gas-tightly encloses it. Device according to one of the preceding claims, characterized in that the second tube (2) has a second opening in its wall, and this opening opens into the cavity (11). Device according to one of the preceding claims, characterized in that the first tube (1) is part of an inspection hatch of a chimney (12). Device according to one of the preceding claims, characterized in that the housing (3) with its second housing side (5), which is opposite the housing side on which the second pipe opens into the housing (2), lies almost flat against the chimney (12). Device according to one of the preceding claims, characterized in that the housing (3) and / or the first tube (1) gas-tightly surrounds or closes and / or gas-tightly seals the opening in the chimney (12) through which the first tube (1) can be inserted into the chimney (12). Device according to one of the preceding claims, characterized in that the housing (3) and / or the first tube (1) and / or the second tube (2) are made of stainless steel. Device according to one of the preceding claims, characterized in that the first tube (1) and / or the second tube (2) are arranged parallel to each other and / or that the diameter of the first tube (1) and the diameter of the second tube (2) are the same. Device according to one of the preceding claims, characterized in that the pull regulator (9) is screwed, bolted, clamped or glued to the end (8) of the second tube (2).

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