Spark and dust collecting device for chimney of firewood stove
By installing a spark dust separation net and an ignition guide plate inside the chimney of a wood-fired stove, and utilizing a large tilt angle and negative pressure area to collect spark dust, the safety hazards caused by direct spark discharge are solved, achieving safe and efficient collection and storage of spark dust.
Patent Information
- Application Number
- CN202310259550.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-03-09
- Publication Date
- 2026-03-06
AI Technical Summary
When existing wood-burning stoves are in use, sparks and dust are directly emitted through the chimney, which can easily cause outdoor fires, burn people, burn holes in tents, or ignite tents, threatening personal safety and causing property damage.
Inside the chimney, a spark and dust separation net and an ignition and ash guiding plate are installed. The sparks and dust are collected by a metal net installed at a large angle and a negative pressure area. Large sparks are guided to the storage chamber by suction and inertia and fall into the storage chamber by their own weight. Fine dust turns into fly ash at high temperature, ensuring that the chimney is unobstructed.
It effectively collects and stores sparks and dust, preventing sparks from causing fires and burns, ensuring the proper combustion of the wood-burning stove, and improving safety and efficiency.
Smart Images
Figure CN121611909A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of a wood-fired stove chimney spark and dust collection device, which separates, collects and stores sparks and dust emitted with the chimney during the combustion of a wood-fired stove. Background Technology
[0002] Existing wood-burning stoves vent smoke directly from the chimney, and sparks and ash are discharged directly with the chimney. The higher the chimney, the greater the suction, resulting in larger sparks and more ash being discharged. This not only easily causes outdoor fires but can also burn people. The biggest problem is that when used in tents, sparks can burn countless small holes in the tent, and in severe cases, they can ignite the tent, causing a fire that threatens personal safety and causes property damage. Summary of the Invention
[0003] To address the aforementioned problems, this invention provides a spark and dust collection device for wood-fired stove chimneys. This device achieves the separation, collection, and storage of sparks and dust by installing a spark and dust separation mesh, an ignition and ash guiding plate, and a spark and dust storage bin inside the chimney, thus resolving the pain points described in the background art. The spark and dust separation mesh is a rectangular metal mesh with an area two to three times larger than the chimney opening area and a width just large enough to fit inside the chimney's square tube. It is installed at a large angle inside the main square tube of the spark and dust separation chimney. The upper part of the main square tube has an ash outlet, and the lower plate of the ash outlet is bent at an angle towards the inside of the tube, forming an ignition and ash guiding plate. The large angle installation of the spark and dust separation mesh facilitates the separation of sparks and dust under the chimney's suction force and inertia. The negative pressure area of the storage chamber at the top of the off-grid converges, and the negative pressure area of the storage chamber is generated under the action of the installation angle of the ignition and ash guiding plate. After the suction force decreases, the spark dust falls into the spark dust storage chamber by its own weight for collection and storage. The spark dust storage chamber is a rectangular hollow sealed cavity formed by welding a long box-shaped body onto the square tube of the main body of the spark dust separation chimney. The upper end of the long box-shaped spark dust storage chamber is welded to the upper pipe plate of the ash outlet of the main body of the spark dust separation chimney, and the lower end is welded to the inclined extended chimney tube surface of the main body of the spark dust separation chimney. When the wood-burning stove is lit, the heated chimney generates suction, drawing sparks and ash into the chimney along with the flames. At the steep angle of the spark-ash separation mesh, the hot flue gas from the flames passes through the mesh and exits the chimney. Larger sparks and ash particles are blocked within the mesh and guided by suction and inertia to the negative pressure area of the storage bin at the top of the mesh. The sparks and ash in the negative pressure area of the storage bin on the ignition guide plate fall into the storage bin by gravity. When slightly larger sparks and ash particles are trapped on the separation mesh, they quickly dissipate as fly ash under the high temperature of the flame, preventing obstruction of the chimney and ensuring normal combustion of the wood-burning stove. Considering that most wood-burning stoves on the market currently have round pipe chimneys, a square-to-round pipe adapter is available for energy conservation, emission reduction, and user convenience.
[0004] To achieve the above objectives, the present invention adopts the following technical solution.
[0005] As a preferred embodiment, a wood-fired stove chimney spark and dust collection device comprises a spark and dust separation chimney body and a spark and dust separation mesh. The spark and dust separation mesh is a rectangular mesh plate, the width of which fits perfectly inside the square tube of the spark and dust separation chimney body, and the length is two to three times the diameter of the chimney body tube. The upper part of the spark and dust separation chimney body has an ash outlet and a fire-guiding ash plate. The upper end of the spark and dust separation mesh is welded to an upper tube plate inside the square tube of the chimney body, and the lower end of the spark and dust separation mesh is welded to an opposite tube plate welded to the upper end.
[0006] As a preferred embodiment, the ignition and ash guiding plate is formed by bending the upper end of the lower plate of the ash outlet of the main body of the spark dust separation chimney at a certain angle. It has the function of guiding the flow of the hot airflow of the flame and guiding the spark dust into the negative pressure area of the storage chamber and falling into the spark dust storage chamber.
[0007] As a preferred embodiment, the Martian dust storage chamber is a long box-shaped body welded and installed on the main body of the Martian dust separation chimney. The upper end of the long box-shaped body of the Martian dust storage chamber covers the ash outlet of the main body of the Martian dust separation chimney, and the lower end is welded and installed on the inclined extended chimney pipe of the main body of the Martian dust separation chimney.
[0008] In the above scheme, a wood-fired stove chimney spark and dust collection device includes a spark and dust separation chimney body, a spark and dust separation chimney body ash outlet, an obliquely extended chimney pipe, a spark and dust separation net, an ignition and ash guiding plate, a spark and dust storage bin, and a negative pressure area in the storage bin. The key feature is that the spark and dust separation chimney body is the first section of the wood-fired stove chimney, but it could also be the second, third, or last section. As a preferred embodiment, it is described in detail as the first section of the chimney. The spark and dust separation chimney body has an ash outlet at a suitable position on the upper part of its main pipe surface. The lower end of the ash outlet plate has an inwardly bent angle to form the ignition and ash guiding plate. The main body of the spark ash separating chimney has an angled cut at the lower end of its square tube. An extended chimney tube with the same angled cut is welded and installed. A chimney mounting socket is welded to the lower end of the extended chimney tube and inserted into the chimney mounting opening of the wood-fired stove. The purpose of the extended chimney tube is to keep the main chimney tube away from the stove surface, allowing for larger and more cookware to be placed on the stove surface, thus improving the stove's efficiency. The spark ash storage chamber is a long box-shaped body. Its upper end is covered and welded to the upper plate of the ash outlet of the spark ash separating chimney body, and its lower end is welded to the upper surface of the extended chimney tube. The spark ash storage chamber and the spark ash separating chimney body form a closed system. The cavity serves as a storage chamber for Martian dust. The Martian dust separation mesh is a rectangular, fine-perforated square mesh plate with an area two to three times larger than the area of the main pipe opening of the Martian dust separation chimney. Its length is two to three times the diameter of the main pipe opening, and its width fits perfectly inside the main pipe. The Martian dust separation mesh is installed at a large angle inside the main pipe. The top of the mesh plate is welded to the pipe surface above the ash outlet of the main pipe, and the bottom is welded to the opposite pipe plate below the top mounting position. When the wood-burning stove is ignited, the chimney heats up and generates suction, drawing Martian dust into the chimney along with the flames. At the inclined angle of the spark dust separation net, the hot flue gas from the flame passes through the spark dust separation net and is discharged from the chimney. Large spark dust particles are blocked within the spark dust separation net at a large inclined angle and guided by suction and inertia to the negative pressure area of the storage bin at the top of the spark dust separation net. The spark dust in the negative pressure area of the storage bin on the ignition and ash guiding plate falls into the spark dust storage bin by gravity for collection and storage. When slightly larger spark dust particles are blocked and remain on the spark dust separation net, they are quickly turned into fly ash and dispersed under the high temperature of the flame, without obstructing the chimney and ensuring normal combustion of the wood-burning stove. Considering that all wood-burning stoves on the market currently have round pipe chimneys, in order to save energy and reduce emissions and for the convenience of users, a square pipe to round pipe adapter can be used. Attached Figure Description
[0009] Figure 1 This is a side view schematic diagram of the assembly of the firewood stove chimney spark and dust collection device of the present invention.
[0010] Figure 2 This is a schematic diagram of the firewood stove chimney spark and dust collection device of the present invention.
[0011] Figure 3 This is a schematic diagram of the main body of the firewood stove chimney spark and dust collection device and spark and dust separation chimney of the present invention. Detailed Implementation
[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0013] As a preferred embodiment, a wood-fired stove chimney spark and dust collection device comprises a spark and dust separation chimney body 1 and a spark and dust separation mesh 4. The spark and dust separation mesh 4 is a rectangular mesh plate, its width fitting perfectly inside the square tube of the spark and dust separation chimney body 1, and its length being two to three times the diameter of the tube opening of the spark and dust separation chimney body 1. The upper part of the spark and dust separation chimney body 1 has a spark and dust separation chimney body ash outlet 2 and a fire-guiding ash plate 5. The upper end of the spark and dust separation mesh 4 is welded and installed on an upper tube plate inside the square tube of the spark and dust separation chimney body ash outlet 2, and the lower end of the spark and dust separation mesh 4 is welded and installed on an opposite tube plate welded and installed at the upper end.
[0014] As a preferred embodiment, the ignition and ash guiding plate 5 is formed by bending the lower end of the ash outlet 2 of the main body of the spark dust separation chimney at a certain angle, and has the function of guiding the flow of the flame hot airflow and guiding the spark dust into the negative pressure area 8 of the storage chamber and falling into the spark dust storage chamber 6.
[0015] As a preferred embodiment, the Martian dust storage chamber 6 is a long box-shaped body welded and installed on the main body 1 of the Martian dust separation chimney. The upper end of the long box-shaped body of the Martian dust storage chamber 6 covers the ash outlet 2 of the main body of the Martian dust separation chimney, and the lower end is welded and installed on the obliquely extended chimney pipe 3 of the main body 1 of the Martian dust separation chimney.
[0016] In the above scheme, a spark and dust collection device for a wood-fired stove chimney includes a spark and dust separating chimney body 1, a spark and dust separating chimney body ash outlet 2, an obliquely extended chimney pipe 3, a spark and dust separating net 4, an ignition and ash guiding plate 5, a spark and dust storage bin 6, and a negative pressure area 8 in the storage bin. The spark and dust separating chimney body 1 is characterized by being the first chimney section of a wood-fired stove 9, but it could also be the second, third, or last chimney section. As a preferred embodiment, it is described in detail as the first chimney section. The spark and dust separating chimney body 1 has an ash outlet 2 at a suitable position on its upper part of the main pipe surface. The lower end of the ash outlet 2 has an inwardly bent angle at an angle to form the ignition and ash guiding plate. 5. The lower end of the square tube of the main body 1 of the spark dust separation chimney has an angled cut, and an obliquely extended chimney tube 3 with the same angled cut is welded and installed. A chimney installation socket tube 7 is welded and installed at the lower end of the obliquely extended chimney tube 3. The chimney installation socket tube 7 is inserted into the chimney installation port 10 of the wood-fired stove. The purpose of the obliquely extended chimney tube is to keep the main chimney tube away from the surface of the wood-fired stove 9, so that the surface of the wood-fired stove 9 can hold larger and more pots and pans, thereby improving the utilization efficiency of the wood-fired stove 9. The spark dust storage chamber 6 is a long box-shaped body. The upper end is covered and welded to the upper plate of the ash outlet 2 of the main body of the spark dust separation chimney, and the lower end is welded to the upper pipe surface of the obliquely extended chimney tube 3. The spark dust storage chamber 6 and the main body 1 of the spark dust separation chimney form a The enclosed cavity serves as the Martian dust storage chamber 6. The Martian dust separation mesh 4 is a rectangular, fine-perforated square plate mesh with an area two to three times larger than the opening area of the Martian dust separation chimney body 1. Its length is two to three times the diameter of the Martian dust separation chimney body 1, and its width is just enough to fit inside the square tube of the Martian dust separation chimney body 1. The Martian dust separation mesh 4 is installed at a large angle inside the square tube of the Martian dust separation chimney body 1. The top of the Martian dust separation mesh 4 is welded to the pipe surface above the ash outlet 2 of the Martian dust separation chimney body, and the bottom of the Martian dust separation mesh 4 is welded to the opposite pipe plate below the upper installation position of the Martian dust separation mesh 4. When the wood stove 9 is ignited, the chimney is heated and generates suction force, and the Martian dust enters the chimney with the flame, at a large angle. At the tilt angle of the spark dust separation net 4, the hot flue gas from the flame passes through the spark dust separation net 4 and is discharged from the chimney. Large spark dust particles are blocked in the spark dust separation net 4 at a large tilt angle and guided by suction and inertia to the negative pressure area 8 of the storage bin at the top of the spark dust separation net 4. The spark dust in the negative pressure area 8 of the storage bin on the ignition and ash guiding plate 5 falls into the spark dust storage bin 6 by its own weight for collection and storage. When slightly larger spark dust particles are blocked on the spark dust separation net 4, they are quickly turned into fly ash and dispersed under the high temperature of the flame, without obstructing the chimney and ensuring the normal combustion of the wood stove 9. Considering that all wood stoves on the market currently have round pipe chimneys, in order to save energy and reduce emissions and for the convenience of users, a square pipe to round pipe conversion connector can be used.
[0017] Finally, it should be noted that the above embodiments are only used to illustrate the preferred specific implementation of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the present invention.
Claims
1. A device for collecting sparks and dust from a wood-fired stove chimney, comprising a main body for separating sparks and dust from the chimney and a spark and dust separation mesh, characterized in that, The spark dust separation net is a rectangular net plate, the width dimension is just put into the square pipe of the spark dust separation chimney body, the length is two to three times of the caliber of the chimney body, the upper part of the chimney body is provided with a spark dust separation chimney body ash outlet and a spark guiding plate, the upper end of the spark dust separation net is welded and installed on the upper pipe plate in the square pipe chimney pipe of the spark dust separation chimney body ash outlet, and the lower end of the spark dust separation net is welded and installed on the opposite pipe plate which is welded and installed on the upper end.
2. A wood-burning stove chimney spark and dust collection device according to claim 1, characterized in that: The spark guiding plate is bent at a certain angle on the lower end of the spark dust separation chimney body ash outlet, and has the functions of guiding the flame hot air flow and guiding the spark dust into the storage bin.
3. The wood-burning stove chimney spark and dust collection device of claim 1, wherein: The spark dust storage bin is a long box type body which is welded and installed on the spark dust separation chimney body, the upper end of the long box type body covers the spark dust separation chimney body ash outlet, and the lower end is welded and installed on the inclined lengthened chimney pipe of the spark dust separation chimney body.