Firewood stove with step supporting net
By adopting a stepped support network design and separate settings in the wood stove, the problems of low combustion efficiency and short service life of traditional wood stoves are solved, achieving more efficient combustion and longer service life.
Patent Information
- Application Number
- CN202420200743.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-26
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-01-26
AI Technical Summary
The grille plate design of traditional wood stoves leads to low combustion efficiency, insufficient air intake, and the support net is prone to fuse or collapse, affecting service life.
It adopts a stepped support net design. The middle boss forms a concave cavity to increase the volume of the air inlet cavity. Ventilation holes are set on the boss and the shelf to improve the air inlet volume and combustion adequacy, and separate the support net from the furnace body. Easy to replace.
The air intake volume per unit time is increased, the combustion materials are burned more fully, and the service life of the wood stove is extended.
Smart Images
Figure CN222378152U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of stoves, in particular to a wood-burning stove with a step support net. Background Art
[0002] Nowadays, outdoor camping is becoming more and more popular among the public. Since firewood is widely available, many people bring a wood stove when they go camping. The traditional wood stove is a straight-tube design with a grille plate (support net) inside the furnace body. The grille plate is basically flat, and the combustibles are spread on the grille plate. The gaps between the combustibles become narrow, the air intake is small, and the combustion efficiency is slow. In addition, the grille plate is close to the bottom air inlet channel, so that the air intake volume per unit time of the air inlet cavity below the grille plate is relatively average, which makes the combustibles not burn fully. In addition, since the grille plate is welded inside the furnace body, if the grille plate melts or collapses after long-term use, the grille plate is not easy to replace, and the furnace body may not be used again, reducing the service life of the furnace body. Summary of the invention
[0003] In order to solve the above problems, the purpose of the utility model is to provide a wood burning stove with a stepped support net, which increases the amount of air entering the combustion chamber per unit time, makes the combustion of the combustibles more complete, and can stagger the combustibles at a certain position, increase the air inlet gap, and increase the air intake volume. In addition, the support net is arranged separately from the furnace body, which is convenient for replacement and increases the service life of the furnace body.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:
[0005] A wood-fired stove with a stepped support net comprises a stove body with an opening at the upper end, a stove cavity formed in the stove body, a support net is arranged at the bottom of the stove cavity, an air inlet cavity is formed between the support net and the bottom of the stove body, and air vents are arranged on the support net to connect the stove cavity with the air inlet cavity; the characteristic is that the middle part of the support net is recessed toward the opening direction of the stove body to form a boss, a concave cavity is formed on the inner side of the boss and is connected with the air inlet cavity; the air vents are formed on the boss and / or on the support net outside the boss.
[0006] In the above technical solution, the support net is in the shape of steps (ladders). Specifically, a boss is formed in the middle of the support net, which relatively forms a cavity in the boss, thereby increasing the volume of the air inlet cavity between the support net and the bottom of the furnace body, and increasing the amount of air flowing into the furnace cavity through the air vents per unit time, so that the combustibles placed on the support net can be burned more fully. In addition, the setting of the boss can make the combustibles placed on the middle of the support net staggered by a certain position, increase the gap between the combustibles, increase the air intake, and make the combustion more complete.
[0007] Preferably, the support net further comprises a shelf formed on the periphery of the boss, a retaining ring is constructed on the inner side of the furnace body, and the shelf is overlapped on the retaining ring. In this technical solution, the support net comprises an integrally formed shelf and boss, and the shelf is overlapped on the retaining ring of the furnace body to support the support net, and also enables the support net to be directly taken out from the opening along the furnace cavity of the furnace body, which makes it very convenient to replace the support net and improves the utilization rate of the furnace body.
[0008] Preferably, the outer edge of the shelf extends upward to form a reinforcement edge. In this technical solution, the provision of the reinforcement edge improves the structural strength of the support net and can play a certain guiding role when taking and placing the support net, preventing the edge of the shelf from scraping the inner wall of the furnace body.
[0009] Preferably, the vent holes include a plurality of vent holes arranged radially and regularly on the upper end face of the boss and a plurality of vent holes arranged circumferentially and regularly on the shelf, and the vent holes and the inner end of the retaining ring form a spacing. In this technical solution, the vent holes include vent holes arranged on the upper end face of the boss and vent holes arranged on the shelf, and the side wall of the boss is not provided with vent holes to improve the connection strength between the boss and the shelf; the opening area of the vent holes is larger than the vent holes, and the air enters the furnace body from the bottom side, so the vent holes on the outside are arranged larger, so that the wind entering the furnace body can quickly enter the combustion chamber from the vent holes, increase the air intake, and handle the ashes after burning, and it is convenient to drop. The vent holes arranged on the boss are distributed in the shape of circular holes and are arranged relatively densely, so that the contact area between the combustion object placed on the boss and the wind is guaranteed, and the combustion is sufficient. The vent strip hole and the inner end of the retaining ring form a gap to ensure that the ashes after burning fall from the vent hole into the ash receiving pan below.
[0010] Preferably, the diameter of the circular ventilation hole is equal to the width of the ventilation strip hole and can prevent the burning particles from falling. In this technical solution, the support net arrangement of the wood stove can be used for firewood combustion or for particle combustion; and the diameter of the circular ventilation hole is equal to the width of the ventilation strip hole and can prevent the burning particles from falling, in order to ensure that the air intake is suitable for particle combustion at the same time, to prevent the air holes from being too large and particles from falling, or to prevent the air holes from being too small and affecting the air intake.
[0011] Preferably, the furnace body comprises an outer furnace wall and an inner furnace wall, an air inlet channel A is provided at the lower end of the side wall of the outer furnace wall, and an air inlet hole is provided at the bottom of the inner furnace wall; gaps are provided between the side wall and the bottom of the outer furnace wall and the side wall and the bottom of the inner furnace wall respectively; the air inlet hole and the air inlet channel A are communicated through the gap. In this technical solution, air enters the furnace body from the air inlet channel A, and part of the air enters the interior of the inner furnace wall from the air inlet hole at the bottom of the inner furnace wall, which is the basic setting for furnace combustion.
[0012] Preferably, an air inlet channel B is provided on the side wall at the upper end of the inner furnace wall, and the air inlet channel B is connected to the air inlet channel A through a gap. In this technical solution, air enters the furnace body from the air inlet channel A, partially passes between the side wall of the outer furnace wall and the side wall of the inner furnace wall, and enters the furnace cavity through the air inlet channel B, pressing the emitting sparks and hot air downward to prevent the sparks from running around, and also allowing the combustion in the furnace to be more complete.
[0013] Preferably, the inner furnace wall includes a lower chamber and a combustion chamber; the furnace chamber is formed in the combustion chamber, and the retaining ring is arranged at the inner bottom of the combustion chamber; the air inlet chamber is formed in the lower chamber, and a plurality of connecting plates are arranged circumferentially upward from the upper edge of the lower chamber, and the upper part of the inner wall of the connecting plate is fixed to the lower part of the outer wall of the combustion chamber, and an air inlet channel C is formed between the upper end of the lower chamber, the lower end of the combustion chamber, and the plurality of connecting plates, and the air inlet channel C and the air inlet channel A are connected through a gap. In this technical solution, air enters the furnace body from the air inlet channel A, and part of it passes between the side wall of the outer furnace wall and the side wall of the inner furnace wall. Part of this part of air directly flows into the air inlet chamber from the air inlet channel C and enters the combustion chamber, further increasing the air intake per unit time in the combustion chamber, making the combustion more complete.
[0014] Preferably, the air inlet is arranged at the bottom center of the lower chamber, and an ash receiving pan is arranged in the lower chamber just above the air inlet, and a gap is formed between the side wall and the bottom of the ash receiving pan and the side wall and the bottom of the lower chamber respectively;
[0015] A plurality of brackets are fixedly provided on the circumference of the side wall of the ash receiving tray, the upper and lower ends of the brackets extend out of the upper and lower ends of the ash receiving tray respectively, the inner end of the retaining ring extends downward to form a retaining edge, the inner diameter of the ash receiving tray is larger than the inner diameter of the retaining ring, and the upper end of the bracket extends out of the lower end of the retaining edge.
[0016] In the above technical solution, the ash receiving tray is used to receive the ashes after burning in the combustion chamber. The air enters the lower chamber through the air inlet hole, passes through the gap between the ash receiving tray and the lower chamber, enters the air inlet chamber and reaches the combustion chamber. The multiple brackets on the ash receiving tray are used to support the ash receiving tray to stand in the lower chamber. At the same time, the upper ends of the multiple brackets are arranged around the retaining edge to prevent the ash receiving tray from shaking and shifting in a large range and misaligning with the ash lowering opening at the lower end of the inner furnace wall, so that all the ashes can fall into the ash receiving tray.
[0017] Preferably, the bottom of the inner side of the outer furnace wall is sealed with a chassis, the upper opening of the inner furnace wall is provided with an end edge, the outer edge of the end edge extends upward to form a flange, and the flange is closed and connected to the upper end of the outer furnace wall; a fire gathering ring is mounted on the end edge, and a circle of fire gathering wall is constructed at the upper end of the fire gathering ring, and a plurality of fire outlet holes communicating with the furnace cavity are opened on the fire gathering wall. In this technical solution, the chassis plays the role of sealing and supporting the furnace body; the fire gathering ring is used to block the wind and prevent sparks from running around within a certain range, and the setting of the fire outlet holes increases the amount of fire output around the furnace mouth, while playing a certain safety role, it maximizes the flame utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the first type of wood-burning stove.
[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the first type of wood-burning stove along the AA direction.
[0020] Figure 3 This is a schematic diagram of the structural breakdown of the first type of wood-burning stove.
[0021] Figure 4 Schematic diagram of the support network layout.
[0022] Figure 5 Schematic diagram of the arrangement of the retaining ring.
[0023] Figure 6 Schematic diagram of the three-dimensional structure of the support network.
[0024] Figure 7 Schematic diagram of the three-dimensional structure of the inner furnace wall.
[0025] Figure 8 This is a schematic diagram of the coordinated installation of the ash tray and the combustion chamber.
[0026] Fig. 9 Schematic diagram of the fire circle of the first type of wood-burning stove.
[0027] Fig.10 This is a schematic diagram of the three-dimensional structure of the second type of wood-burning stove.
[0028] Fig.11 This is a schematic diagram of the cross-sectional structure of the second type of wood-burning stove in the FF direction. DETAILED DESCRIPTION
[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.
[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0034] like Figures 1 to 11A wood-fired stove with a stepped support net is shown, comprising a furnace body 1 with an opening at the upper end, a furnace cavity 2 formed in the furnace body 1, a support net 3 is provided at the bottom of the furnace cavity 2, an air inlet cavity 4 is formed between the support net 3 and the bottom of the furnace body 1, and air vents are provided on the support net 3 to enable the furnace cavity 2 to communicate with the air inlet cavity 4; the middle part of the support net 3 is recessed toward the opening direction of the furnace body 1 to form a boss 5, and a concave cavity 6 is formed on the inner side of the boss 5 to communicate with the air inlet cavity 4; the air vents are formed on the boss 5 and / or on the support net 3 outside the boss 5.
[0035] In the above technical solution, the support net is in a step shape (staircase shape). Specifically, a boss is formed in the middle of the support net, which relatively forms a cavity in the boss, thereby increasing the volume of the air inlet cavity between the support net and the bottom of the furnace body, and increasing the amount of air flowing into the furnace cavity through the vents per unit time, so that the combustion objects placed on the support net can be burned more fully. In addition, the setting of the boss can make the combustion objects placed on the middle of the support net staggered by a certain position, increase the gap between the combustion objects, increase the air intake, and make the combustion more complete. In addition, the support net is integrally formed and has a stable structure.
[0036] Furthermore, the support net 3 also includes a shelf 7 formed on the side of the boss 5, and a retaining ring 8 is constructed on the inner side of the furnace body 1, and the shelf 7 is overlapped on the retaining ring 8. In this technical solution, the support net includes an integrally formed shelf and boss, and the shelf is overlapped on the retaining ring of the furnace body to support the support net, and also enables the support net to be directly taken out from the opening along the furnace cavity of the furnace body, which is very convenient to replace the support net, thereby improving the utilization rate of the furnace body.
[0037] Furthermore, the outer edge of the shelf 7 extends upward to form a reinforcement edge 9. In this technical solution, the provision of the reinforcement edge improves the structural strength of the support net and can play a certain guiding role when taking and placing the support net, preventing the edge of the shelf from scraping the inner wall of the furnace body.
[0038] Furthermore, the vent holes include a plurality of vent holes 10 regularly arranged on the upper end face of the boss 5 in a radial direction and a plurality of vent strip holes 11 regularly arranged on the shelf 7 along the circumference of the boss 5, and the vent strip holes 11 form a spacing with the inner end of the retaining ring 8. In this technical solution, the vent holes include vent holes arranged on the upper end face of the boss and vent strip holes arranged on the shelf, and the side wall of the boss is not provided with vent holes to improve the connection strength between the boss and the shelf; the opening area of the vent strip holes is larger than the vent holes, and the air in the furnace body enters from the bottom side, so the vent strip holes on the outside are arranged larger, so that the wind entering the furnace body can quickly enter the combustion chamber from the vent strip holes, increase the air intake, and handle the ashes after burning, and it is convenient to drop. The vent holes arranged on the boss are distributed in the shape of round holes and are arranged relatively densely, so that the contact area between the combustion object placed on the boss and the wind is guaranteed, and the combustion is sufficient. The vent strip hole and the inner end of the retaining ring form a gap to ensure that the ashes after burning fall from the vent hole into the ash receiving pan below.
[0039] Furthermore, the diameter of the circular ventilation hole 10 is equal to the width of the ventilation strip hole 11 and can prevent the burning particles from falling. In this technical solution, the support net arrangement of the wood stove can be used for firewood combustion or for particle combustion; and the diameter of the circular ventilation hole is equal to the width of the ventilation strip hole and can prevent the burning particles from falling, in order to ensure that the air intake is suitable for particle combustion at the same time, to prevent the air hole from being too large and particles from falling, or to prevent the air hole from being too small and affecting the air intake.
[0040] Furthermore, the furnace body 1 includes an outer furnace wall 12 and an inner furnace wall 13, an air inlet channel A14 is provided at the lower end of the side wall of the outer furnace wall 12, and an air inlet hole 15 is provided at the bottom of the inner furnace wall 13; gaps are provided between the side wall and the bottom of the outer furnace wall 12 and the side wall and the bottom of the inner furnace wall 13 respectively; the air inlet hole 15 and the air inlet channel A14 are connected through the gap. In this technical solution, air enters the furnace body from the air inlet channel A, and part of the air enters the interior of the inner furnace wall from the air inlet hole at the bottom of the inner furnace wall, which is the basic setting for furnace combustion.
[0041] It should be noted here that Figure 1 In the first wood-fired stove, the air inlet channel A14 is composed of two circles of multiple strip holes arranged at intervals, while in Fig.10 In the figure, the air inlet passage A14 of the second wood-fired stove is composed of two circles of multiple oblique quadrilateral holes arranged at intervals.
[0042] Furthermore, an air inlet channel B16 is provided on the side wall of the upper end of the inner furnace wall 13, and the air inlet channel B16 and the air inlet channel A14 are connected through a gap. In this technical solution, air enters the furnace body from the air inlet channel A, partially passes between the side wall of the outer furnace wall and the side wall of the inner furnace wall, and enters the furnace cavity through the air inlet channel B, pressing the emitting sparks and hot air downward to prevent the sparks from running around, and also allowing the combustion in the furnace to be more complete.
[0043] It should be noted here that Figure 1 In the first type of wood-fired stove, the air inlet passage B16 is a circle of strip holes arranged at intervals, while in Fig.10 In the figure, the air inlet passage B16 of the second wood-burning stove is a circle of circular holes arranged at intervals.
[0044] Furthermore, the inner furnace wall 13 includes a lower chamber 17 and a combustion chamber 18; the furnace chamber 2 is formed in the combustion chamber 18, and the retaining ring 8 is arranged at the inner bottom of the combustion chamber 18; the air inlet chamber 4 is formed in the lower chamber 17, and a plurality of connecting plates 19 are arranged circumferentially upward from the upper edge of the lower chamber 17, and the upper part of the inner wall of the connecting plate 19 is fixed to the lower part of the outer wall of the combustion chamber 18, and an air inlet channel C20 is formed between the upper end of the lower chamber 17, the lower end of the combustion chamber 18 and the plurality of connecting plates 19, and the air inlet channel C20 and the air inlet channel A14 are connected through a gap. In this technical solution, air enters the furnace body from the air inlet channel A, and part of it passes between the side wall of the outer furnace wall and the side wall of the inner furnace wall. Part of this part of air directly flows into the air inlet chamber from the air inlet channel C and enters the combustion chamber, further increasing the air intake per unit time in the combustion chamber, so that the combustion is more complete.
[0045] Further, the air inlet 15 is arranged at the bottom center of the lower chamber 17, and an ash receiving pan 21 is arranged in the lower chamber 17 just above the air inlet 15, and a gap is formed between the side wall and the bottom of the ash receiving pan 21 and the side wall and the bottom of the lower chamber 17 respectively;
[0046] A plurality of brackets 22 are fixedly provided circumferentially on the side wall of the ash receiving tray 21, and the upper and lower ends of the brackets 22 extend out of the upper and lower ends of the ash receiving tray 21 respectively. The inner end of the retaining ring 8 extends downward to form a retaining edge 23. The inner diameter of the ash receiving tray 21 is larger than the inner diameter of the retaining ring 8, and the upper end of the bracket 22 extends out of the lower end of the retaining edge 23.
[0047] In the above technical solution, the ash receiving tray is used to receive the ashes after burning in the combustion chamber. The air enters the lower chamber through the air inlet hole, passes through the gap between the ash receiving tray and the lower chamber, enters the air inlet chamber and reaches the combustion chamber. The multiple brackets on the ash receiving tray are used to support the ash receiving tray to stand in the lower chamber. At the same time, the upper ends of the multiple brackets are arranged around the retaining edge to prevent the ash receiving tray from shaking and shifting in a large range and misaligning with the ash lowering opening at the lower end of the inner furnace wall, so that all the ashes can fall into the ash receiving tray.
[0048] Furthermore, a bottom plate 24 is provided at the inner bottom of the outer furnace wall 12, and an end edge 25 is provided at the upper opening of the inner furnace wall 13. The outer edge of the end edge 25 extends upward to form a flange 26, and the flange 26 is closed and connected to the upper end of the outer furnace wall 12; a fire gathering ring 27 is mounted on the end edge 25, and a circle of fire gathering wall 28 is constructed at the upper end of the fire gathering ring 27, and a plurality of fire outlet holes 29 communicating with the furnace cavity 2 are opened on the fire gathering wall 28. In this technical solution, the bottom plate plays the role of sealing and supporting the furnace body; the fire gathering ring is used to block the wind and prevent sparks from running around within a certain range, and the setting of the fire outlet holes increases the amount of fire output around the furnace mouth, while playing a certain safety role, it maximizes the flame utilization rate.
[0049] It should be noted here that Figure 1 In the first type of wood-fired stove, the fire-gathering wall of the fire-gathering ring is arranged horizontally, and a fire outlet is arranged on it. The fire-gathering ring plays a role of wind protection and a certain fire gathering effect, and the fire output is relatively large; Fig.10 Among them, the fire gathering wall of the fire gathering ring of the first type of wood-burning stove is set in a cone shape, and no fire outlet is set. The fire gathering ring plays a windproof and good fire gathering role, and the flame is more concentrated.
[0050] In this specific embodiment, in order to address the problems that the support net in the existing wood-fired stove is relatively horizontally arranged, the combustion of the combustibles placed thereon is relatively incomplete, and the support net is welded in the furnace body, affecting the service life of the furnace body, the above-mentioned scheme arranges the support net in a stepped shape, thereby increasing the amount of air entering the combustion chamber from the air inlet cavity per unit time, making the combustion in the combustion chamber more complete. In addition, the combustibles placed on the support net are staggered at a certain relative position under the influence of the boss, making the combustion in the combustion chamber more complete, and the support net can be detachably arranged in the furnace body, which is convenient for the replacement of the support net, thereby improving the utilization rate of the furnace body and reducing costs.
[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0052] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.
Claims
1. A wood-fired stove with a stepped support net, comprising a stove body (1) with an opening at the top, a stove cavity (2) formed in the stove body (1), a support net (3) provided at the bottom of the stove cavity (2), an air inlet cavity (4) formed between the support net (3) and the bottom of the stove body (1), and air holes provided on the support net (3) to allow the stove cavity (2) to communicate with the air inlet cavity (4); characterized in that: The middle of the support net (3) is recessed towards the opening of the furnace body (1) to form a boss (5), and a cavity (6) is formed inside the boss (5) and communicates with the air inlet cavity (4); the vent holes are formed on the boss (5) and / or on the support net (3) outside the boss (5).
2. A wood-burning stove with a step support net according to claim 1, characterized in that: The support net (3) further comprises a shelf (7) formed on the peripheral side of the boss (5), a retaining ring (8) is constructed on the inner side of the furnace body (1), and the shelf (7) is overlapped on the retaining ring (8).
3. A wood-burning stove with a step support net according to claim 2, characterized in that: The outer end edge of the shelf (7) extends upward to form a reinforcement edge (9).
4. A wood-burning stove with a step support net according to claim 3, characterized in that: The vent holes include a plurality of vent circular holes (10) regularly arranged radially on the upper end surface of the boss (5) and a plurality of vent strip holes (11) regularly arranged circumferentially on the shelf (7) of the boss (5), wherein the vent strip holes (11) form a spacing with the inner end of the retaining ring (8).
5. A wood-burning stove with a step support net according to claim 4, characterized in that: The diameter of the circular ventilation hole (10) is equal to the width of the strip ventilation hole (11) and can prevent combustion particles from falling.
6. A wood-burning stove with a step support net according to claim 2, characterized in that: The furnace body (1) comprises an outer furnace wall (12) and an inner furnace wall (13); an air inlet channel A (14) is provided at the lower end of the side wall of the outer furnace wall (12); and an air inlet hole (15) is provided at the bottom of the inner furnace wall (13); gaps are provided between the side wall and the bottom of the outer furnace wall (12) and the side wall and the bottom of the inner furnace wall (13); and the air inlet hole (15) and the air inlet channel A (14) are communicated through the gap.
7. A wood-burning stove with a step support net according to claim 6, characterized in that: An air intake channel B (16) is provided on the upper side wall of the inner furnace wall (13), and the air intake channel B (16) and the air intake channel A (14) are connected through a gap.
8. A wood-burning stove with a step support net according to claim 7, characterized in that: The inner furnace wall (13) comprises a lower chamber (17) and a combustion chamber (18); the furnace chamber (2) is formed in the combustion chamber (18), and the retaining ring (8) is arranged at the inner bottom of the combustion chamber (18); the air inlet chamber (4) is formed in the lower chamber (17), and a plurality of connecting plates (19) are arranged circumferentially spaced upward from the upper edge of the lower chamber (17), and the upper part of the inner wall of the connecting plate (19) is fixed to the lower part of the outer wall of the combustion chamber (18); an air inlet channel C (20) is formed between the upper end of the lower chamber (17), the lower end of the combustion chamber (18) and the plurality of connecting plates (19), and the air inlet channel C (20) and the air inlet channel A (14) are connected through a gap.
9. A wood-burning stove with a step support net according to claim 8, characterized in that: The air inlet hole (15) is arranged at the bottom center of the lower chamber (17); an ash receiving tray (21) is arranged in the lower chamber (17) directly above the air inlet hole (15); and gaps are formed between the side walls and the bottom of the ash receiving tray (21) and the side walls and the bottom of the lower chamber (17); A plurality of brackets (22) are fixedly provided on the circumference of the side wall of the ash receiving tray (21); upper and lower ends of the brackets (22) extend out of the upper and lower ends of the ash receiving tray (21) respectively; the inner end of the retaining ring (8) extends downward to form a retaining edge (23); the inner diameter of the ash receiving tray (21) is greater than the inner diameter of the retaining ring (8); and the upper end of the brackets (22) extends out of the lower end of the retaining edge (23).
10. A wood-burning stove with a step support net according to claim 6, characterized in that: The inner bottom of the outer furnace wall (12) is sealed with a bottom plate (24), and the upper opening of the inner furnace wall (13) is provided with an end edge (25), the outer edge of the end edge (25) extends upward to form a flange (26), and the flange (26) is closed and connected to the upper end of the outer furnace wall (12); a fire gathering ring (27) is mounted on the end edge (25), and a circle of fire gathering wall (28) is constructed at the upper end of the fire gathering ring (27), and a plurality of fire outlet holes (29) are opened on the fire gathering wall (28) and communicate with the furnace cavity (2).