Chimney outlet and chimney assembly for a wood-burning stove
Patent Information
- Application Number
- CN202521305228.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-18
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-06-18
Smart Images

Figure CN224932763U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of vertical stability, convenient and quick installation and use of side-exit chimneys for wood-fired stoves. Background Technology
[0002] Wood-burning stoves are a popular fire-making tool, especially for outdoor use, tent camping, heating, cooking, boiling water, and indoor heating. Most wood-burning stoves on the market currently have top-mounted chimneys, which take up valuable stovetop space. Some stoves have been improved to have side-mounted chimneys, but these round pipe chimneys are prone to tilting to the left or right. Some products use a tight-fitting connection between the chimney outlet and a 90-degree bend in the chimney to solve this problem, but after use, the chimney deforms due to high temperatures, making it difficult to disassemble and reassemble. Another solution is to add a support plate between the chimney and the stove body, securing the chimney with two screws. However, this adds several auxiliary installation parts that need to be stored separately, making it cumbersome and inconvenient, and increasing the risk of losing parts.
[0003] This utility model relates to a wood-fired stove chimney outlet and chimney assembly. One end of the chimney outlet pipe inside the stove body is beveled, and a gravity-operated automatic sealing cover plate is installed. A coordinate symmetry pin is installed inside the beveled pipe opening. A matching insertion groove and positioning groove for the coordinate symmetry pin are cut into one end of the 90-degree angled chimney elbow pipe. After the chimney elbow pipe is inserted into the chimney outlet pipe, the elevated external chimney pipe will not tilt left or right, nor will it move or fall off. This allows for quick, convenient, and stable chimney installation, ensuring safe and worry-free use of the wood-fired stove and eliminating the possibility of lost parts due to forgetfulness, thus solving the aforementioned problems. Summary of the Invention
[0004] This utility model provides a smoke outlet and chimney assembly for a wood-fired stove, addressing the problems mentioned in the background art regarding the ease with which side-exit circular pipe chimneys can tilt, shift, or detach, as well as the difficulties in installation and the tendency to lose or misplace auxiliary parts. To achieve the above objectives, this utility model provides the following technical solution:
[0005] A wood-burning stove chimney exhaust port and chimney assembly includes a stove body, a chimney outlet pipe, a cover plate, a cover plate hinge, coordinate symmetry pins, a chimney elbow pipe, a plug groove, a plug positioning groove, and an external chimney pipe. The chimney outlet pipe is welded to a chimney outlet hole on the side plate of the stove body. One end of the chimney outlet pipe inside the stove body is a beveled opening. An elliptical cover plate is provided on the beveled opening pipe. The cover plate is connected to the beveled opening pipe of the chimney outlet pipe via a cover plate hinge. Four coordinate symmetry pin welding holes are equally divided into four sections on the wall of the beveled opening pipe. The coordinate symmetry pins are welded to the mounting holes of the coordinate symmetry pins.
[0006] As a preferred embodiment: the chimney elbow pipe is installed inside the chimney inlet pipe. The chimney elbow pipe has an insertion groove corresponding to the coordinate symmetrical pin and a parallel insertion positioning groove on one end of the pipe opening inside the chimney inlet pipe. Specifically, when the chimney elbow pipe is in a right-angled upright state, four insertion grooves are opened at four equal divisions of the circular pipe opening at a horizontal angle of 15 degrees to the right of the center coordinate of the chimney elbow pipe opening, and four insertion positioning grooves are opened to the right.
[0007] As a preferred embodiment: When installing the chimney elbow pipe, insert it into the chimney inlet pipe at a 15-degree angle to the left. Open the cover plate at the front of the chimney elbow pipe opening, and at the same time, the four corresponding coordinate symmetrical pins enter the inner bottom of the four insertion slots. After rotating the chimney elbow pipe 15 degrees to the right, pull the chimney elbow pipe back, and the four coordinate symmetrical pins enter the four insertion positioning slots for limiting.
[0008] In the above scheme, the chimney outlet pipe is welded and installed on the side plate of the furnace body, and the chimney elbow pipe is inserted and installed on the chimney outlet pipe of the furnace body. The multi-section heightened external chimney pipe inserted and installed on the chimney elbow pipe is stably installed. The round pipe chimney installed on the side of the wood-burning stove will not tilt to the left or right, move, or fall off. The wood-burning stove can be assembled and used quickly, conveniently, and safely.
[0009] Compared with the prior art, the present invention has the following beneficial effects:
[0010] This utility model relates to a side-exit chimney for a wood-fired stove and its components. It proposes a side-exit chimney design for a round tube chimney, which solves the problem of top-exit chimneys occupying valuable stove surface area. It also addresses the issue of side-exit chimneys being prone to tilting to the left or right, and the need for multiple cumbersome auxiliary parts to prevent tilting. Furthermore, it solves the problem of automatic sealing of the chimney outlet in combustion modes such as fire pits or barbecue grills where the chimney function is not used.
[0011] The working principle and process of this utility model of a wood-fired stove chimney outlet and chimney assembly are as follows: During the assembly of the wood-fired stove, the chimney outlet pipe is aligned with the insertion slot of the chimney elbow pipe by the coordinate symmetry pin and inserted to the bottom. The chimney elbow pipe then opens the cover plate, the chimney outlet pipe is opened, the chimney elbow pipe is rotated 15 degrees to the right and pulled back. The coordinate symmetry pin enters the insertion positioning slot to position the verticality of the chimney elbow pipe. Then, an external heightened chimney pipe is inserted into the chimney elbow pipe. The assembly is completed conveniently and quickly, ensuring the stability of the external heightened chimney pipe and preventing it from tilting to the left or right, shifting, or falling off, thus achieving the purpose of safe use of the wood-fired stove. When the chimney elbow pipe is disassembled and pulled out, the cover plate falls back under its own weight to close the chimney outlet pipe. The design of the cover plate automatically closing the chimney outlet pipe by its own weight eliminates the need for excessive auxiliary accessories for closing the chimney outlet pipe in the combustion mode of the wood-fired stove when the chimney function is not used (burner or barbecue grill). Attached Figure Description
[0012] Figure 1 This is a side view of the present invention.
[0013] Figure 2 This is a three-dimensional schematic diagram of the chimney outlet pipe of this utility model.
[0014] Figure 3 This is a top view of the chimney outlet pipe of this utility model.
[0015] Figure 4 This is a three-dimensional schematic diagram of the chimney elbow pipe of this utility model.
[0016] Explanation of reference numerals in the attached drawings: 1-furnace body, 2-chimney inlet pipe, 3-sealing plate, 4-sealing plate hinge, 5-coordinate symmetry pin, 6-chimney elbow pipe, 7-insertion groove, 8-insertion positioning groove, 9-external chimney pipe Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0018] Please see Figure 1-4This utility model embodiment proposes a smoke outlet and chimney assembly for a wood-fired stove, including a stove body 1, a chimney outlet pipe 2, a cover plate 3, a cover plate hinge 4, a coordinate symmetry pin 5, a chimney elbow pipe 6, a plug groove 7, a plug positioning groove 8, and an external chimney pipe 9. The chimney outlet pipe 2 is welded and installed on the chimney outlet hole on the side plate of the stove body 1. One end of the chimney outlet pipe 2 inside the stove body is a slanted bevel pipe, and an elliptical cover plate 3 is provided on the slanted bevel pipe. The cover plate 3 is connected and installed on the slanted bevel pipe of the chimney outlet pipe 2 via the cover plate hinge 4. Four welding and mounting holes for the coordinate symmetry pin 5 are opened at four equal intervals on the pipe wall of the slanted bevel pipe 2. The coordinate symmetry pin 5 is welded and installed on the mounting holes of the coordinate symmetry pin 5.
[0019] Preferably, the chimney elbow pipe 6 is installed inside the chimney inlet pipe 2. The chimney elbow pipe 6 has an insertion groove 7 corresponding to the coordinate symmetrical pin 5 and an insertion positioning groove 8 connected in parallel on one end of the pipe opening inside the chimney inlet pipe 2. Specifically, when the chimney elbow pipe 6 is in a right-angled upright state, four insertion grooves 7 are opened at four equal divisions of the circular pipe opening at a 15-degree angle to the right of the center line of the chimney elbow pipe 6 opening, and four insertion positioning grooves 8 are opened to the right.
[0020] Preferably, when the chimney elbow pipe 6 is inserted, it is inserted into the chimney inlet pipe 2 at a 15-degree angle to the left. The cover plate 3 is opened at the front of the chimney elbow pipe 6, and at the same time, the four corresponding coordinate symmetrical pins 5 enter the inner bottom of the four insertion slots 7. After the chimney elbow pipe 6 is rotated 15 degrees to the right, it is pulled back, and the four coordinate symmetrical pins 5 enter the four insertion positioning slots 8 for limiting.
[0021] In the above scheme, the chimney outlet pipe 2 is welded and installed on the side plate of the furnace body 1, the chimney elbow pipe 6 is inserted and installed on the chimney outlet pipe 2 of the furnace body 1, and the multi-section heightened external chimney pipe 9 inserted and installed on the chimney elbow pipe 6 is stably installed. The round pipe chimney installed on the side of the wood-fired stove will not tilt to the left or right, move, or fall off, and the wood-fired stove can be assembled and used quickly, conveniently and safely.
[0022] This utility model relates to a firewood stove chimney outlet and chimney assembly, proposing a side-exit chimney design for firewood stoves with round pipes. This solves the problem that top-exit chimneys occupy the usable area of the stove surface, and also addresses the issue of side-exit chimneys easily tilting to the left or right, as well as the need for multiple cumbersome auxiliary parts to prevent this. Furthermore, it solves the problem of automatic sealing of the chimney outlet 2 in combustion modes such as fire pits or barbecue grills where the chimney function is not used. During the assembly of the wood-burning stove, the chimney inlet pipe 2 is aligned with the insertion slot 7 of the chimney elbow pipe 6 by the coordinate symmetrical pin 5 and inserted to the bottom. The chimney elbow pipe 6 then opens the cover plate 3, the chimney inlet pipe 2 opens, the chimney elbow pipe 6 rotates 15 degrees to the right and is pulled back. The coordinate symmetrical pin 5 enters the insertion positioning slot 8 to position the chimney elbow pipe 6 vertically. Then, the external chimney pipe 9 is inserted into the chimney elbow pipe 6. The assembly is completed conveniently and quickly, ensuring the stability of the external heightened chimney pipe and preventing it from tilting to the left or right, shifting, or falling off, thus achieving the purpose of safe use of the wood-burning stove. When the chimney elbow pipe 6 is disassembled and pulled out, the cover plate 3 falls back under its own weight to close the chimney inlet pipe 2. The design of the cover plate 3 of the chimney inlet pipe 2 automatically closing the chimney inlet pipe 2 by its own weight means that in the combustion mode of the wood-burning stove without the chimney function, such as the ignition platform or barbecue grill, there is no need to generate or install too many auxiliary accessories for closing the chimney inlet pipe 2.
[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A smoke outlet and chimney assembly for a wood-fired stove, characterized in that: include, The furnace body, chimney inlet pipe, and chimney elbow pipe are included. The chimney inlet pipe is welded to the chimney inlet hole on the side plate of the furnace body. One end of the chimney inlet pipe inside the furnace body is a slanted, beveled inlet pipe. An elliptical cover plate is provided on the beveled inlet pipe, and the cover plate is welded to the beveled inlet pipe via a cover plate hinge. Four equally spaced welding holes for coordinate symmetrical pins are opened on the beveled inlet pipe wall. The coordinate symmetrical pins are welded to the mounting holes for the coordinate symmetrical pins.
2. The smoke outlet and chimney assembly of the wood-fired stove chimney according to claim 1, characterized in that: The chimney elbow pipe is installed inside the chimney inlet pipe. At one end of the chimney elbow pipe inside the chimney inlet pipe, there is an insertion slot corresponding to the coordinate symmetrical pin and a parallel insertion positioning slot. Specifically, when the chimney elbow pipe is in a right-angled upright state, at a 15-degree angle to the right of the center line of the chimney elbow pipe inlet, four insertion slots are opened at the four equal divisions of the circular pipe inlet, and four insertion positioning slots are opened to the right.
3. The smoke outlet and chimney assembly of the wood-fired stove chimney according to claim 1, characterized in that: When installing the chimney elbow pipe, it should be tilted 15 degrees to the left and inserted into the chimney inlet pipe. After that, the cover plate at the front of the chimney elbow pipe opening will be opened, and at the same time, the four corresponding coordinate symmetrical pins will enter the inner bottom of the four insertion slots. After rotating the chimney elbow pipe 15 degrees to the right, the chimney elbow pipe will be pulled back, and the four coordinate symmetrical pins will enter the four insertion positioning slots for limiting.
