A wood-burning stove

Abstract

This invention belongs to the field of heating technology, specifically disclosing a wood-burning stove. The wood-burning stove includes a lower basin, an upper basin, and a lifting assembly. The lower basin has a lower annular cavity, and the upper basin has an upper annular cavity. The lifting assembly includes a guide bracket and a guide member, one of which is installed in the upper annular cavity and the other in the lower annular cavity. The guide bracket has a guide groove extending from top to bottom, and the guide member is slidably disposed in the guide groove, allowing the upper basin to switch between a stowed position and an unfolded position. When the upper basin is in the unfolded position, the guide member is limited to the first end of the guide groove, and the lower end of the upper basin is close to the upper end of the lower basin. When the upper basin is in the unfolded position, the guide member is located at the second end of the guide groove, and the lower end of the upper basin is close to the lower end of the lower basin. The wood-burning stove disclosed in this invention improves the convenience of use and storage, and also enhances the performance of the wood-burning stove.

Description

Technical Field

[0001] This invention relates to the field of heating technology, and more particularly to a wood-burning stove. Background Technology

[0002] In daily life, braziers are a common heating tool, especially in southern regions or other areas where there is no winter heating.

[0003] To achieve heating while improving the storage capacity of the fire basin, existing technology provides a folding fire basin, which includes an upper basin body, a lower basin body, a base, and folding support legs. The upper basin body includes an upper inner shell and an upper outer shell fixedly fitted outside the upper inner shell. The lower basin body includes a lower inner shell and a lower outer shell spaced outside the lower inner shell. The lower end of the lower outer shell is fixedly installed on the base, and a second air guide cavity is formed between the lower outer shell and the lower inner shell. In use, charcoal is placed inside the lower basin body, and the upper basin body is installed on the lower basin body. When not in use, the upper end of the upper basin body is inserted into the second air guide cavity, realizing the folding of the fire basin and reducing its overall size.

[0004] The existing technology for folding fire basins can fold them when not in use, but when folding the fire basin, the upper basin needs to be removed, flipped over and inserted into the second air guide cavity of the lower basin. When it is needed again, the upper basin needs to be removed from the second air guide cavity and then reassembled with the lower basin. This makes the operation of storing and unfolding the folding fire basin cumbersome and inefficient. Summary of the Invention

[0005] The technical problem solved by this invention is to provide a wood-burning stove that can effectively solve the problem of cumbersome folding and unfolding operations in existing fire pits.

[0006] The above-mentioned technical problems are solved by the following technical solutions:

[0007] A wood-burning stove, comprising:

[0008] The lower basin has a lower combustion chamber and a lower annular cavity spaced around the outside of the lower combustion chamber;

[0009] The upper basin has a vertically penetrating upper combustion chamber and an upper annular cavity spaced around the outside of the upper combustion chamber. The lower end of the upper annular cavity is open and the upper end is closed. An upper ventilation hole communicating with the upper combustion chamber is provided at the upper end of the inner wall of the upper annular cavity. An air inlet communicating with the external environment is provided on the wall of the upper annular cavity or the lower annular cavity.

[0010] The lifting assembly includes a guide bracket and a guide member. One of the guide bracket and the guide member is installed in the upper ring cavity, and the other is installed in the lower ring cavity. The guide bracket has a guide groove extending from top to bottom, and the guide member is slidably disposed in the guide groove so that the upper basin body can be raised and lowered between a storage position and an unfolded position.

[0011] When the upper basin is in the unfolded position, the guide is located at the first end of the guide groove, and the lower end of the upper basin is close to the upper end of the lower basin; when the upper basin is in the stored position, the guide is located at the second end of the guide groove, and the lower end of the upper basin is close to the lower end of the lower basin.

[0012] Compared with the prior art, the wood-burning stove of the present invention has the following advantages: by setting a guide bracket with a guide groove in one of the upper and lower annular cavities, and setting a guide component that cooperates with the guide groove in the other, the upper basin can be raised and lowered relative to the lower basin under the combined action of the guide groove and the guide component. This allows the upper basin to descend relative to the lower basin to a storage position where the two are basically nested, and to rise relative to the lower basin to an unfolded position where the two are relatively spread out in the vertical direction. Thus, when the wood-burning stove is needed, the upper basin can move to the unfolded position to meet the normal use of the wood-burning stove; when the wood-burning stove is not needed, the upper basin can be lowered to the storage position to reduce the overall vertical size of the wood-burning stove and facilitate its storage. Meanwhile, since the guide groove is set on the guide bracket, which is set in the upper or lower ring cavity, the setting of the guide groove will not affect the air intake of the upper ring cavity. This makes it easier to control the setting position, number and ventilation area of ​​the upper ventilation hole of the wood stove, thereby better meeting the needs of smokeless combustion. At the same time, the guide groove will not be exposed, ensuring the overall structural aesthetics and ease of cleaning of the wood stove.

[0013] In one embodiment, the guide bracket includes a guide rail plate, which is spaced apart from the inner and outer walls of the corresponding upper or lower annular cavity, and the guide rail plate is provided with the guide groove.

[0014] In one embodiment, the guide bracket further includes a first fixing component and a second fixing component. At the upper and lower ends of the guide rail plate, one end near the first end of the guide groove is detachably connected to the cavity wall of the corresponding upper ring cavity or lower ring cavity through the first fixing component, and the other end is detachably connected to the cavity wall of the corresponding lower ring cavity or lower ring cavity through the second fixing component.

[0015] In one embodiment, the first fixing component is detachably connected to the guide rail plate, and the first fixing component is welded or bonded to the outer sidewall of the corresponding upper ring cavity or lower ring cavity.

[0016] And / or, the second fixing member is formed by folding the end of the guide plate portion, and the second fixing member is connected to the bottom of the corresponding upper ring cavity or lower ring cavity.

[0017] In one embodiment, the guide groove includes a lifting groove portion and a first groove portion connected to a first end of the lifting groove portion. The lifting groove portion extends from top to bottom, and the first groove portion extends circumferentially along the upper annular cavity in a direction away from the lifting groove portion. The end of the first groove portion away from the lifting groove portion forms the first end of the guide groove.

[0018] In one embodiment, a limiting groove is formed on one side of the upper and lower side walls of the first groove, near the second end of the lifting groove. When the upper basin is in the unfolded position, the guide is accommodated in the limiting groove.

[0019] And / or, the lifting groove extends circumferentially spirally from top to bottom along the corresponding upper or lower annular cavity;

[0020] And / or, the second end of the lifting groove is connected to a second groove, which extends circumferentially along the upper annular cavity in a direction away from the lifting groove.

[0021] In one embodiment, the lower basin body includes a chassis, a lower inner shell, and a lower outer shell. The lower outer shell is spaced outside the lower inner shell and its lower end is connected to the chassis. The lower end of the lower inner shell is supported by the chassis. The chassis, the lower inner shell, and the lower outer shell together form the lower annular cavity. The chassis and the lower inner shell together form the lower combustion chamber.

[0022] The upper basin body includes an upper inner shell and an upper outer shell sleeved on the outside of the upper inner shell. The upper annular cavity is formed between the upper inner shell and the upper outer shell, and the upper combustion chamber is formed on the inner side of the upper inner shell.

[0023] The lower end of the upper inner shell is inserted into the lower annular cavity, and the lower end of the upper outer shell is sleeved on the outside of the lower outer shell.

[0024] In one embodiment, the guide bracket is mounted on the lower outer shell and located outside the upper inner shell;

[0025] And / or, the lower end of the upper inner shell is rolled inward to form a limiting rolled edge portion, and the upper end of the lower inner shell is folded outward to form an upper rolled edge portion, wherein the projection of the upper rolled edge portion and the limiting rolled edge portion on the horizontal projection plane at least partially overlaps.

[0026] In one embodiment, the wood-burning stove includes a support frame and an ash tray. The center of the base is recessed to form a receiving groove. The ash tray is placed in the receiving groove. The support frame is mounted on the opening of the receiving groove. The support frame has multiple ventilation holes. The groove wall of the receiving groove has multiple air inlets. The air inlets, the receiving groove, the ventilation holes, and the lower combustion chamber are connected in sequence.

[0027] The lower inner housing is located outside the support frame; or, the lower end of the lower inner housing can be vertically and movably supported on the support frame.

[0028] In one embodiment, the chassis is recessed downward to form a positioning ring groove, the positioning ring groove is arranged around the opening of the receiving groove, and the edge of the support frame is received in the positioning ring groove;

[0029] And / or, the chassis has a receiving recess forming the receiving groove and a mounting ring connected to the outside of the receiving groove, the lower end of the lower outer shell is connected to the mounting ring, the wood stove also includes a support retaining ring, the support retaining ring is sleeved on the outside of the receiving recess and its upper end abuts against the mounting ring, the lower end of the support retaining ring is lower than the receiving recess, and the support retaining ring is provided with a plurality of air holes spaced apart along the circumference.

[0030] In one embodiment, the wood-burning stove further includes a fire baffle ring, which is detachably installed on the upper end of the upper basin body, and the fire baffle ring includes a conical ring portion that is smaller at the top and larger at the bottom, wherein the small port diameter of the conical ring portion is smaller than the upper port diameter of the upper combustion chamber.

[0031] And / or, the wood-burning stove includes a top cover that is movably disposed on the upper basin and closes the opening of the upper combustion chamber.

[0032] In one embodiment, the upper end of the upper basin is recessed downward to form a positioning groove, and the lower end of the fire baffle ring is accommodated in the positioning groove.

[0033] And / or, the fire baffle ring further includes an outer support ring connected to the outer side of the large end of the cone ring portion, the outer support ring portion being supported on the upper end of the upper basin body;

[0034] And / or, the fire shield ring further includes an inner support ring connected to the inner side of the small end of the cone ring portion, and the upper cover is supported by the inner support ring portion.

[0035] In one embodiment, the upper cover includes a cover plate portion, a first ring portion and a second ring portion connected sequentially from the inside to the outside. The first ring portion is lower than the cover plate portion. The first ring portion is sleeved on the outside of the conical ring portion and its shape is adapted to the conical ring portion. The second ring portion covers the upper side of the outer support ring portion. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the wood-burning stove in the storage state according to an embodiment of the present invention;

[0037] Figure 2 This is a cross-sectional view of the wood-burning stove in its stored state, as provided in an embodiment of the present invention.

[0038] Figure 3 This is a schematic diagram of the structure of a wood-burning stove in its unfolded state, as provided in an embodiment of the present invention.

[0039] Figure 4 This is a partial structural schematic diagram of a wood-burning stove provided in an embodiment of the present invention;

[0040] Figure 5 for Figure 4 A magnified view of a section at point I;

[0041] Figure 6 This is a schematic diagram of the structure of the guide bracket provided in an embodiment of the present invention;

[0042] Figure 7 This is a cross-sectional view of a wood-burning stove in an unfolded state, as provided in an embodiment of the present invention.

[0043] Figure 8 for Figure 7 A magnified view of a section at point J;

[0044] Figure 9 for Figure 7 A magnified view of a section at point K;

[0045] Figure 10 for Figure 7 A magnified view of the area at point L.

[0046] Label Explanation:

[0047] 1. Lower basin; 11. Base plate; 111. Receiving recess; 1111. Receiving groove; 1112. Air inlet; 1113. Positioning protrusion; 112. Mounting ring; 1121. Air supplement inlet; 113. Lower baffle ring; 114. Positioning ring; 1141. Positioning ring groove; 12. Lower inner shell; 121. Lower inner cylinder; 122. Lower inner rolled edge; 123. Upper flange; 13. Lower outer shell; 14. Lower combustion chamber; 15. Lower annular cavity;

[0048] 2. Upper basin body; 21. Upper inner shell; 211. Upper inner cylinder; 2111. Upper ventilation hole; 212. Top plate; 2121. Positioning groove; 213. Upper baffle; 214. Limiting rolled edge; 22. Upper outer shell; 23. Upper annular cavity; 24. Upper combustion chamber;

[0049] 3. Lifting assembly; 31. Guide bracket; 311. Guide rail plate; 312. Second fixing component; 313. End flange; 314. Side flange; 315. Guide groove; 3151. Lifting groove; 3152. First groove; 3153. Second groove; 3154. Limiting groove; 32. Guide component; 321. Mounting shaft; 322. Rotating component; 323. Anti-detachment component; 33. First fixing component; 331. First fixing plate; 332. Second fixing plate; 333. Connecting plate;

[0050] 4. Support frame; 41. Ventilation holes; 42. Reinforced rolled edges;

[0051] 5. Fire shield ring; 51. Conical ring section; 52. Outer support ring section; 53. Inner support ring section; 54. Reinforced edge section;

[0052] 6. Top cover; 61. Cover plate portion; 62. First ring portion; 63. Second ring portion; 64. Transition ring portion; 65. Outer ring portion; 66. Cover rolled edge portion;

[0053] 7. Gray tray; 71. Positioning slot;

[0054] 8. Support ring; 81. Curled edge of the support ring; 82. Air hole. Detailed Implementation

[0055] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0056] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0057] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0058] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0059] like Figures 1 to 4 and Figure 7 As shown, this embodiment provides a wood-burning stove that can improve the convenience of use and storage while satisfying users' need for heating through the combustion of combustible materials.

[0060] In this embodiment, the wood-burning stove includes an upper basin 2, a lower basin 1, and a lifting assembly 3. The lower basin 1 has an open lower combustion chamber 14 and a lower annular cavity 15 spaced around the outside of the lower combustion chamber 14. The upper basin 2 has an open upper combustion chamber 24 at both ends and an upper annular cavity 23 spaced around the upper combustion chamber 24. The upper annular cavity 23 is open at the lower end and closed at the upper end. The upper end of the inner wall of the upper annular cavity 23 is provided with an upper ventilation hole 2111 that communicates with the upper combustion chamber 24. The wall of the upper annular cavity 23 or the lower annular cavity 15 is provided with a supplementary air inlet 1121 that communicates with the external environment. The lifting assembly 3 includes a guide bracket 31 and a guide member 32. One of the guide bracket 31 and the guide member 32 is installed in the upper annular cavity 23 and the other is installed in the lower annular cavity 15. The guide bracket 31 is provided with a guide groove 315 that extends from top to bottom. The guide member 32 is slidably disposed in the guide groove 315 so that the upper basin 2 can be raised and lowered between the storage position and the unfolded position.

[0061] When the upper basin 2 is in the unfolded position, the guide 32 is located at the first end of the guide groove 315, and the lower end of the upper basin 2 is close to the upper end of the lower basin 1; when the upper basin 2 is in the retracted position, the guide 32 is located at the second end of the guide groove 315, and the lower end of the upper basin 2 is close to the lower end of the lower basin 1.

[0062] The wood-burning stove provided in this embodiment features a guide bracket 31 with a guide groove 315 in one of the upper annular cavity 23 and the lower annular cavity 15, and a guide member 32 that cooperates with the guide groove 315 in the other. This allows the upper basin 2 to rise and fall relative to the lower basin 1 under the combined action of the guide groove 315 and the guide member 32. This allows the upper basin 2 to descend to a storage position where the two are basically nested together, and to rise to an unfolded position where the two are vertically unfolded relative to each other. Thus, when the wood-burning stove is needed, the upper basin 2 can move to the unfolded position to meet the normal use of the wood-burning stove; when the wood-burning stove is not needed, the upper basin 2 can be lowered to the storage position to reduce the overall vertical size of the wood-burning stove and facilitate its storage. Meanwhile, since the guide groove 315 is set on the guide bracket 31, and the guide bracket 31 is set on the upper annular cavity 23 or the lower annular cavity 15, the setting of the guide groove 315 will not affect the air intake of the upper annular cavity 23. This facilitates the control of the setting position, number and ventilation area of ​​the upper ventilation hole 2111 of the wood stove, thereby better meeting the needs of smokeless combustion. At the same time, the guide groove 315 will not be exposed, ensuring the overall structural aesthetics and ease of cleaning of the wood stove.

[0063] When the wood-burning stove is in the extended state, the lower combustion chamber 14 and the upper combustion chamber 24 are directly connected to each other to supply fuel for combustion, and the upper annular chamber 23 and the lower annular chamber 15 are directly connected to each other. When the upper basin 2 is in the extended position, the wood-burning stove is in the extended state; when the upper basin 2 is in the retracted position, the wood-burning stove is in the retracted state.

[0064] In other embodiments, the guide bracket 31 may be disposed in the upper annular cavity 23 and the guide member 32 may be disposed in the lower annular cavity 15. In this configuration, the first end of the guide groove 315 is the lower end of the guide groove 315 and the second end of the guide groove 315 is the upper end of the guide groove 315.

[0065] like Figures 5 to 8As shown, in one embodiment, the guide groove 315 includes a lifting groove portion 3151 and a first groove portion 3152 connected to a first end of the lifting groove portion 3151. The lifting groove portion 3151 extends from top to bottom, and the first groove portion 3152 extends circumferentially along the upper annular cavity 23 in a direction away from the lifting groove portion 3151. The end of the first groove portion 3152 away from the lifting groove portion 3151 forms the first end of the guide groove 315. By setting up the lifting groove 3151, the upper basin 2 can be raised and lowered by the movement of the guide 32 in the lifting groove 3151. By setting up the first groove 3152, when it is necessary to switch the upper basin 2 from the unfolded position to the stored position, the upper basin 2 needs to be rotated first so that the guide 32 moves along the first groove 3152 to the intersection of the first groove 3152 and the lifting groove 3151, and then the upper basin 2 is pushed downward. This ensures that the upper basin 2 can be stably maintained in the unfolded position when there is no rotational force, thus improving the reliability of the wood stove.

[0066] In one embodiment, the second end of the lifting groove 3151 is connected to a second groove 3153, which extends circumferentially along the upper annular cavity 23 in a direction away from the lifting groove 3151. This allows the upper basin 2 to be more stably held in the storage position, ensuring storage reliability.

[0067] To further improve the reliability of the upper basin 2 in the unfolded position, in one embodiment, a limiting groove 3154 is formed on the upper and lower side walls of the first groove 3152, near the second end of the lifting groove 3151. When the upper basin 2 is in the unfolded position, the guide member 32 is accommodated in the limiting groove 3154. That is, when the guide member 32 slides along the first groove 3152 away from the lifting groove 3151, it will slide into the limiting groove 3154 and be stuck there, thus restricting the guide member 32 from continuing to slide. This prevents the upper basin 2 from continuing to rotate relative to the lower basin 1, ensuring that the upper basin 2 remains stably in the unfolded position. When the upper basin 2 needs to rotate, it is first lifted upwards, causing the guide member 32 to disengage from the limiting groove 3154. This allows the guide member 32 to slide along the first groove 3152 to the lifting groove 3151 under the rotation of the upper basin 2.

[0068] Specifically, when the guide bracket 31 is disposed in the lower annular cavity 15, the first groove 3152 is located at the upper end of the lifting slide, the second groove 3153 is located at the lower end of the lifting slide, and a limiting groove 3154 is formed on the lower side wall of the first groove 3152. When the guide bracket 31 is disposed in the upper annular cavity 23, the first groove 3152 is located at the lower end of the lifting slide, and a limiting groove 3154 is formed on the upper side wall of the first groove 3152.

[0069] In one embodiment, the lifting groove 3151 extends circumferentially spirally from top to bottom along the corresponding upper annular cavity 23 or lower annular cavity 15. This arrangement allows the upper basin 2 to be switched from the unfolded position to the retracted position by first rotating the upper basin 2 to move the guide member 32 from the first groove 3152 to the intersection of the lifting groove 3151 and the first groove 3152. Then, while pushing the upper basin 2 downwards, the upper basin 2 is rotated, causing the guide member 32 to slide along the lifting groove 3151 to the intersection of the lifting groove 3151 and the second groove 3153. Then, the upper basin 2 is rotated again, causing the guide member 32 to move along the first groove 3152 to the second end, thus achieving the switching of the upper basin 2 from the unfolded position to the retracted position.

[0070] That is, the lifting groove 3151 is spirally arranged, so that when the upper basin 2 is switched between the unfolded position and the storage position, the upper basin 2 needs to be lifted and rotated at the same time. This can ensure the stability of the lifting process of the upper basin 2, and prevent the upper basin 2 from falling directly downwards due to user misoperation or other reasons, or the upper basin 2 being subjected to excessive upward force, which would cause the lower basin 1 to lift off the ground, thus improving the stability and safety of the wood stove.

[0071] It is worth noting that the switching of the upper basin 2 from the storage position to the unfolded position is the reverse of the above process, which will not be described in detail here.

[0072] In one embodiment, the first groove 3152 and the second groove 3153 extend in opposite directions relative to the lifting groove 3151 in the circumferential direction. That is, the guide groove 315 extends clockwise or counterclockwise from the first end to the second end. This means that when switching between the storage position and the unfolded position, the upper basin 2 can always be rotated in one direction, ensuring the smoothness and convenience of unfolding and storing the stove. In other embodiments, the first groove 3152 and the second groove 3153 may be located on the same side of the lifting groove 3151.

[0073] The lower basin 1 includes a chassis 11, a lower inner shell 12, and a lower outer shell 13. The lower outer shell 13 is spaced out on the outside of the lower inner shell 12 and its lower end is connected to the chassis 11. The lower end of the lower inner shell 12 is supported on the chassis 11. The chassis 11, the lower inner shell 12, and the lower outer shell 13 together form a lower annular cavity 15. The chassis 11 and the lower inner shell 12 together form a lower combustion chamber 14. The upper basin 2 includes an upper inner shell 21 and an upper outer shell 22 that is sleeved on the outside of the upper inner shell 21. An upper annular cavity 23 is formed between the upper inner shell 21 and the upper outer shell 22. An upper combustion chamber 24 is formed on the inner side of the upper inner shell 21.

[0074] In one embodiment, the lower end of the upper inner shell 21 is inserted into the lower annular cavity 15, and / or, the lower end of the upper outer shell 22 is sleeved on the outside of the lower outer shell 13. By sleeved on the outside of the lower outer shell 13, the upper edge of the lower outer shell 13 can be prevented from being exposed, thereby preventing the upper end of the lower outer shell 13 from scraping against the user during the operation of the upper basin 2. At the same time, this arrangement makes the gap between the upper outer shell 22 and the lower outer shell 13 face downward, reducing the probability of ash or other impurities falling between the upper outer shell 22 and the lower outer shell 13, improving the reliability and ease of cleaning of the wood-burning stove. By inserting the upper inner shell 21 into the lower annular cavity 15, it is convenient to remove and clean the internal structure of the lower inner shell 12, improving the user experience of the wood-burning stove.

[0075] In one embodiment, the guide bracket 31 is disposed in the lower annular cavity 15, and the guide member 32 is installed in the upper annular cavity 23, thereby reducing the overall weight of the sliding part and improving the convenience of sliding, unfolding, and storing the upper basin 2. That is, the first end of the guide groove 315 is the upper end of the guide groove 315, and the second end of the guide groove 315 is the lower end of the guide groove 315.

[0076] To improve the ease of use of the wood-burning stove, in one embodiment, the guide bracket 31 is connected to the inner side of the lower outer shell 13 and / or to the chassis 11, and the lower inner shell 12 is movably supported on the chassis 11. This arrangement allows the lower inner shell 12 to be pulled out or inserted through the internal space and upper opening of the upper inner shell 21, facilitating cleaning of the lower inner shell 12 and thus improving the long-term performance of the wood-burning stove. Simultaneously, since the guide bracket 31 is fixed to the lower outer shell 13, the removal and insertion of the lower inner shell 12 will not interfere with the guide bracket 31, improving the reliability of the wood-burning stove's assembly, disassembly, and use. Furthermore, the guide bracket 31 can be disassembled and maintained by removing the lower inner shell 12, improving the reliability of the wood-burning stove's assembly and disassembly, and enhancing its overall performance.

[0077] In one embodiment, the guide bracket 31 includes a guide rail plate portion 311, on which the aforementioned guide groove 315 is provided. The guide rail plate portion 311 is spaced apart from the inner and outer walls of the corresponding upper annular cavity 23 or lower annular cavity 15, which helps to reduce interference between the guide rail plate portion 311 and the lower inner housing 12 and the lower outer housing 13, facilitates the setting of the guide groove 315, and facilitates the cooperation between the guide bracket 31 and the guide member 32.

[0078] Specifically, the upper inner shell 21 and the lower inner shell 12 are coaxial cylindrical structures, and the guide plate portion 311 is an arc plate structure coaxial with the lower inner shell 12 to avoid interference between the guide plate portion 311 and the corresponding upper annular cavity 23 or lower annular cavity 15 on both sides.

[0079] To improve the installation stability of the guide bracket 31, the guide bracket 31 further includes a first fixing component 33 and a second fixing component 312. At the upper and lower ends of the guide rail plate portion 311, one end near the first end of the guide groove 315 is detachably connected to the cavity wall of the corresponding upper annular cavity 23 or lower annular cavity 15 via the first fixing component 33, and the other end is detachably connected to the cavity wall of the corresponding upper annular cavity 23 or lower annular cavity 15 via the second fixing component 312. This fixes both the upper and lower ends of the guide bracket 31, reducing the probability of relative wobbling between the upper and lower ends of the guide bracket 31 and improving the installation stability and reliability of the guide bracket 31.

[0080] In one embodiment, the first fixing component 33 is connected to the upper end of the guide rail plate 311 and is detachably connected to the lower outer shell 13, and the second fixing component 312 is connected to the lower end of the guide rail plate 311 and is detachably connected to the lower outer shell 13 or the chassis 11. At least two of each of the first fixing component 33 and the second fixing component 312 are spaced apart along the circumference of the lower inner shell 12 to ensure that both ends of the guide bracket 31 are stably connected in the circumferential direction of the lower inner shell 12, preventing the guide bracket 31 from shaking during the up-and-down movement of the upper basin 2, and improving the reliability of the wood-burning stove.

[0081] In one embodiment, the first fixing component 33 is detachably connected to the guide rail plate portion 311, and the first fixing component 33 is welded or bonded to the outer sidewall of the corresponding upper annular cavity 23 or lower annular cavity 15. This avoids the need for holes or grooves on the outer wall of the upper annular cavity 23 or lower annular cavity 15 to fasten the first fixing component 33, ensuring the appearance integrity of the upper outer shell 22 or lower outer shell 13, and also avoiding the impact of holes or grooves on air intake.

[0082] For example, the first fixing component 33 includes a first fixing plate portion 331 and connecting plate portions 333 connected to both ends of the first fixing plate portion 331. The two connecting plate portions 333 are arranged opposite to each other and spaced apart. Each connecting plate portion 333 extends a second fixing plate portion 332 in a direction away from each other. The second fixing plate portion 332 is connected to the lower outer casing 13, and the first fixing plate portion 331 is connected to the guide rail plate portion 311. This type of first fixing component 33 has a simple structure and high connection stability. The first fixing plate portion 331 is preferably connected to the guide rail plate portion 311 with fasteners to improve connection stability and ease of assembly and disassembly.

[0083] It is understandable that other structural forms of the first fixing component 33 can also be used to connect the guide rail plate portion 311 and the lower outer shell 13. For example, only one connecting plate portion 333 is provided and connected between the first fixing plate portion 331 and the second fixing plate portion 332, so that the first fixing component 33 has a U-shaped structure or a Z-shaped structure.

[0084] In one embodiment, the guide rail plate 311 has mounting holes, and the first fixing component 33 has fastening holes. The mounting holes are vertically extending elongated holes, and the fastening holes and mounting holes are arranged in a one-to-one correspondence. The first fixing component 33 and the guide rail plate 311 are fastened together by fasteners passing through the fastening holes and mounting holes. By setting the mounting holes as elongated holes, the connection position between the first fixing component 33 and the guide rail plate 311 can be adjusted in the vertical direction, avoiding assembly problems caused by errors in the installation of the first fixing component 33 on the lower outer shell 13 or errors in the processing of the guide rail plate 311, ensuring that the guide rail plate 311 is accurately and reliably assembled into the lower annular cavity 15.

[0085] In one embodiment, the second fixing member 312 is formed by folding down the end of the guide rail plate portion 311, and the second fixing member 312 is connected to the bottom of the corresponding upper annular cavity 23 or lower annular cavity 15. This simplifies the structural arrangement of the guide bracket 31 and reduces the difficulty of setting up the guide bracket 31. In other embodiments, the second fixing member 312 is detachably connected to the lower outer shell 13, and the second fixing member 312 can adopt the same structure as the first fixing member 33, or it can be formed by bending the lower end of the guide rail plate portion 311.

[0086] In one embodiment, at least one first fixing component 33 is disposed vertically opposite to the first end of the guide slide 315, and a second fixing component 312 is disposed vertically opposite to the second end of the guide slide 315. This ensures the positional stability of the guide bracket 31 at the first and second ends and reduces the probability of the guide bracket 31 shaking.

[0087] The upper end of the guide rail plate 311 is folded to form an end flange 313. The end flange 313 is used to prevent the sharp edges of the guide rail plate 311 from scratching the upper basin 2, and at the same time, it can increase the structural strength and rigidity of the upper end of the guide bracket 31. The end flange 313 is preferably folded outward relative to the guide rail plate 311 to avoid the end flange 313 affecting the sliding of the upper inner housing 21.

[0088] The guide rail plate 311 is folded up on both sides of the lower inner shell 12 to form side flanges 314. The side flanges 314 can enhance the overall structural strength and rigidity of the guide rail plate 311, reduce the probability of deformation of the guide rail plate 311, and thus ensure the reliability of the cooperation between the guide bracket 31 and the guide member 32.

[0089] In one embodiment, multiple guide brackets 31 are spaced apart circumferentially along the lower annular cavity 15, with each guide bracket 31 corresponding to a guide member 32. This ensures the stability of the upper basin 2 under circumferential force and the reliability of its sliding. The number of guide brackets 31 is preferably 2 to 5 to reduce costs while ensuring sliding stability. Each guide member 32 corresponds to one guide bracket 31.

[0090] In other embodiments, the guide bracket 31 may also be a cylindrical structure and sleeved on the outside of the lower inner shell 12, and the guide bracket 31 may be provided with a plurality of guide grooves 315 spaced apart along the circumferential direction.

[0091] like Figure 8 As shown, in one embodiment, the guide member 32 is detachably installed at the lower end of the upper inner housing 21 to facilitate the replacement of the guide member 32 and improve the long-term performance of the wood-burning stove. In one embodiment, the guide member 32 includes a mounting shaft 321 and a rotating member 322 rotatably sleeved on the mounting shaft 321. This allows the sliding friction between the guide member 32 and the guide groove 315 to be at least partially converted into rolling friction by the rotation of the rotating member 322 relative to the mounting shaft 321 during the sliding of the guide member 32 along the guide groove 315. This reduces the wear on the groove walls of the guide member 32 and the guide groove 315, improves the performance of the lifting assembly 3, and also reduces jamming during the lifting of the upper basin 2, improving the smoothness of the lifting of the upper basin 2.

[0092] The rotating component 322 preferably adopts a bushing structure to reduce costs and improve installation convenience. In other embodiments, the rotating component 322 may also adopt a roller structure with a V-shaped annular groove on the outer side, and the groove edge of the guide groove 315 is inserted into the V-shaped annular groove.

[0093] Furthermore, the guide member 32 includes an anti-detachment member 323, which protrudes radially from the rotating member 322 along the mounting shaft 321, and the anti-detachment member 323 is restricted from passing through the guide groove 315 so that the guide member 32 can disengage from the guide groove 315 during use. The anti-detachment member 323 is detachably connected to the mounting shaft 321, so that the guide member 32 can be disengaged from the guide groove 315 by removing the anti-detachment member 323 relative to the mounting shaft 321.

[0094] The mounting shaft 321 preferably adopts a bolt structure, and the anti-detachment component 323 preferably adopts a nut structure. That is, the anti-detachment component 323 is threaded onto the mounting shaft 321, and the anti-detachment component 323 is located on the side of the guide rail plate 311 away from the upper inner housing 21. Furthermore, a locking nut is also threaded onto the bolt, and the locking nut is mounted on the bolt head and the side of the upper inner housing 21 away from the guide bracket 31.

[0095] like Figures 7 to 9As shown, in one embodiment, the upper inner shell 21 includes a cylindrical upper inner cylinder portion 211, the lower end of which is wound to form a limiting rolled edge portion 214; the lower inner shell 12 includes a lower inner cylinder portion 121, which is coaxially arranged with the upper inner cylinder portion 211. The lower end of the lower inner cylinder portion 121 is supported on the chassis 11 and the upper end is folded outward to form an upper rolled edge portion 123. The limiting rolled edge portion 214 is located below the upper rolled edge portion 123, and on the horizontal projection plane, the orthographic projection of the limiting rolled edge portion 214 and the upper rolled edge portion 123 at least partially overlap. The setting of the limiting rolled edge portion 214 can enhance the overall structural strength and rigidity of the lower end of the upper inner shell 21 and reduce the probability of deformation of the upper inner shell 21. At the same time, the setting of the limiting rolled edge portion 214 and the upper flange portion 123 can reduce the gap between the upper end of the lower inner shell 12 and the lower inner shell 12, thereby reducing the probability of air entering the combustion chamber and the upper combustion chamber 24 through the gap and improving the combustion effect.

[0096] In one embodiment, a ventilation gap is formed between the lower end of the upper outer shell 22 and the lower outer shell 13, allowing some air to enter the upper annular cavity 23 through the ventilation gap and then enter the upper combustion chamber 24 through the upper vent 41.

[0097] In one embodiment, a supplementary air inlet 1121 is provided at the bottom of the lower annular cavity 15. Multiple supplementary air inlets 1121 are spaced apart along the circumference of the lower annular cavity 15. External air can enter the lower annular cavity 15 through the supplementary air inlets 1121, and then enter the upper combustion chamber 24 through the lower annular cavity 15, the upper annular cavity 23, and the upper vent 41 in sequence, providing secondary air supply for flame combustion, ensuring complete combustion, and facilitating smokeless combustion. At the same time, the supplementary air inlet 1121 at the bottom of the lower annular cavity 15 allows the airflow to absorb heat from the combustion chamber through the lower annular cavity 15 and its inner wall as it flows from bottom to top, preheating the air flowing inside and further improving combustion performance. Furthermore, placing the supplementary air inlet 1121 on the wall of the lower annular cavity 15 avoids exposing the supplementary air inlet 1121 to the user's view, improving the user experience of the wood-burning stove.

[0098] In other embodiments, an air intake 1121 communicating with the lower annular cavity 15 may be provided at the lower end of the lower outer casing 13. The shape of the air intake 1121 may be triangular, circular, elliptical, rectangular or other shapes, and this embodiment does not limit it.

[0099] like Figure 7 and Figure 9As shown, the wood-burning stove includes a support frame 4 and an ash tray 7. The bottom plate 11 is recessed in the middle to form a receiving groove 1111. The ash tray 7 is placed in the receiving groove 1111. The support frame 4 is mounted on the opening of the receiving groove 1111. The support frame 4 has multiple ventilation holes 41. The groove wall of the receiving groove 1111 has multiple air inlets 1112. The air inlets 1112, the receiving groove 1111, the ventilation holes 41 and the lower combustion chamber 14 are connected in sequence to introduce air into the lower combustion chamber 14, ensuring the oxygen required for the combustion of the burning material and ensuring the combustion effect and completeness.

[0100] Specifically, the vent 41 is located on the side wall of the receiving groove 1111 to prevent the ash tray 7 from obstructing the bottom vent 41 and ensure smooth ventilation. Furthermore, the angle between the bottom of the receiving groove 1111 and the side wall is greater than 90°, so that the side wall of the receiving groove 1111 is inclined, which facilitates the upward flow of air from the vent 41 to the support frame 4.

[0101] In one embodiment, the lower end of the lower inner shell 12 can be vertically and movably supported on the upper side of the support frame 4. This reduces the probability of the support frame 4 shifting upwards via the upper inner shell 21. Furthermore, this arrangement improves the overall structural compactness of the wood-burning stove. Further, the lower end of the lower inner shell 12 is wound to form a lower inwardly rolled edge 122 to reduce the scraping of the support frame 4 when the lower inner shell 12 is removed or placed. In other embodiments, the lower inner shell 12 is located outside the support frame 4, meaning that the lower inner shell 12 does not need to be removed or placed when the support frame 4 is being taken out.

[0102] To improve the ease of setting up the support frame 4, the chassis 11 is recessed downward to form a positioning ring groove 1141. The positioning ring groove 1141 surrounds the outside of the groove opening of the receiving groove 1111. The periphery of the support frame 4 is received in the positioning ring groove 1141. Thus, by placing the support frame 4 in the positioning ring groove 1141, the support frame 4 can be stably set up inside the lower basin 1, avoiding the support frame 4 from shaking during use. It also eliminates the need for other fixing structures, making it easier to remove the support frame 4, thereby facilitating the removal of the ash tray 7 from the receiving groove 1111.

[0103] In one embodiment, the support frame 4 is a plate-shaped structure, and the edge of the support frame 4 is rolled to form a reinforcing rolled edge 42. The reinforcing rolled edge 42 is mounted on the bottom of the positioning recess, thereby preventing the edge of the support frame 4 from having sharp edges that could scratch the user when taking the support frame 4 out.

[0104] Furthermore, the chassis 11 has a receiving recess 111 forming a receiving groove 1111 and a mounting ring 112 connected to the outside of the receiving recess 111. The lower end of the lower outer casing 13 is connected to the mounting ring 112. The mounting ring 112 and the outer end of the receiving recess 111 are connected by a bent positioning ring 114, which is bent to form a positioning ring groove 1141.

[0105] In one embodiment, the outer periphery of the chassis 11 is folded to form a lower retaining ring 113, which surrounds the outer side of the lower outer shell 13 to cover the connection between the lower outer shell 13 and the chassis 11, thereby improving the aesthetic appearance.

[0106] To improve the stability of the ash tray 7, in one embodiment, a positioning protrusion 1113 is provided on one side of the groove wall of the receiving groove 1111 and the bottom of the ash tray 7, while a positioning groove 71 is provided in the other side. The positioning protrusion 1113 is accommodated in the positioning groove 71 to achieve the installation and positioning of the ash tray 7 within the positioning groove 71, preventing the ash tray 7 from shaking radially. In another embodiment, the positioning protrusion 1113 is provided on the bottom of the receiving groove 1111, and the positioning groove 71 is formed by pressing upward on the bottom of the ash tray 7 to enhance the structural strength and rigidity of the ash tray 7 and the base 11.

[0107] In one embodiment, the wood-burning stove further includes a support ring 8, which is sleeved on the outside of the receiving recess 111 and its upper end abuts against the mounting ring 112. The lower end of the support ring 8 is lower than the receiving recess 111, and the support ring 8 is provided with a plurality of air holes 82 spaced apart along the circumference. That is, the lower end of the support ring 8 is supported on the ground to raise the overall height of the wood-burning stove when in use. At the same time, this arrangement increases the distance between the air intake hole 1112 and the vent hole 41 on the chassis 11 and the ground, which can enhance the smoothness of air intake.

[0108] The outer diameter of the support ring 8 gradually increases from top to bottom, thereby increasing the support stability of the support ring 8. Furthermore, both the upper and lower ends of the support ring 8 are wound to form retaining ring flanges 81, to enhance the overall structural strength and rigidity of the support ring 8, further ensuring support stability. The retaining ring flanges 81 are located on the side of the support ring 8 facing the ash pan 7 to prevent the retaining ring flanges 81 from causing scratches to the user.

[0109] like Figure 7 and Figure 10As shown, in one embodiment, the upper end of the upper inner cylinder portion 211 is folded outward to form a top plate portion 212, which abuts against the upper end of the upper outer shell 22. Further, the outer end of the top plate portion 212 is folded downward to form an upper retaining edge portion 213, which covers the connection gap between the top plate portion 212 and the upper outer shell 22. In other embodiments, the upper end of the upper outer shell 22 may be folded inward to form the top plate portion 212.

[0110] The upper outer shell 22 has a fixing lug folded inward at its upper end. Multiple fixing lugs are spaced apart along the circumference of the upper inner shell 21. The fixing lugs fit against the top plate 212 and are fastened to the top plate 212 with fasteners. This improves the disassembly and assembly performance of the upper basin 2 and the structural stability after assembly.

[0111] To improve the combustion performance of the wood-burning stove, a fire baffle ring 5 is also included. The fire baffle ring 5 is detachably installed on the upper end of the upper basin 2. The fire baffle ring 5 includes a conical ring portion 51 that is smaller at the top and larger at the bottom. The diameter of the smaller end of the conical ring portion 51 is smaller than the diameter of the upper end of the upper combustion chamber 24. By setting the fire baffle ring 5, the flame at the upper end can be concentrated, thereby improving the combustion effect.

[0112] In one embodiment, the top plate portion 212 is recessed downward to form a positioning groove 2121, which surrounds the opening of the upper combustion chamber 24. The lower end of the flame deflector ring 5 is accommodated in the positioning groove 2121. By providing the positioning groove 2121, placing the flame deflector ring 5 in the positioning groove 2121 can prevent the flame deflector ring 5 from shaking randomly, eliminating the need for additional structures for fixation and improving the convenience of placing and removing the flame deflector ring 5.

[0113] To improve the stability of the fire baffle ring 5 on the upper basin 2, the fire baffle ring 5 also includes an outer support ring 52 connected to the outer side of the large end of the cone ring portion 51, and the outer support ring 52 is supported on the upper end of the upper basin 2. Specifically, the outer support ring 52 is accommodated in the positioning groove 2121.

[0114] The fire shield 5 also includes an inner support ring 53 connected to the inner side of the small end of the cone ring 51 to prevent sharp edges from scratching the user and improve the convenience of the user in taking out and putting away the fire shield 5. Furthermore, the outer end of the outer support ring 52 is bent to form a reinforcing edge 54 to improve the overall structural strength and rigidity of the fire shield 5. The reinforcing edge 54 can be a coiled structure or a flap structure.

[0115] In one embodiment, the wood-burning stove also includes an upper cover 6, which covers the upper end of the upper basin 2 and conceals the upper opening of the upper combustion chamber 24. This allows the upper combustion chamber 24 to be sealed when not in use.

[0116] In one embodiment, the upper cover 6 includes a cover plate portion 61, a first ring portion 62, and a second ring portion 63 connected sequentially from the inside to the outside. The first ring portion 62 is lower than the cover plate portion 61 and is fitted onto the outside of the conical ring portion 51 with a shape adapted to the conical ring portion 51. The second ring portion 63 covers the upper side of the outer support ring portion 52. This makes the shape of the upper cover 6 adapt to the shape of the fire baffle ring 5, improving the stability and reliability of the upper cover 6 on the upper side of the fire baffle ring 5.

[0117] On the horizontal projection plane, the upper cover 6 covers the upper basin 2. Further, the upper cover 6 also includes a transition ring 64 connected to the outside of the second ring 63, the transition ring 64 being raised radially outward. An outer ring 65 is connected to the outer end of the transition ring 64, the outer ring 65 being parallel to and lower than the cover plate 61. A cover roll edge 66 is formed by winding around the lower inner side of the outer end of the outer ring 65.

[0118] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0119] The specific embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A firewood stove, characterized in that include: The lower basin (1) has a lower combustion chamber (14) and a lower annular cavity (15) spaced around the outside of the lower combustion chamber (14); The upper basin (2) has a vertically penetrating upper combustion chamber (24) and an upper annular cavity (23) spaced around the outside of the upper combustion chamber (24). The lower end of the upper annular cavity (23) is open and the upper end is closed. The upper end of the inner wall of the upper annular cavity (23) is provided with an upper ventilation hole (2111) communicating with the upper combustion chamber (24). The wall of the upper annular cavity (23) or the lower annular cavity (15) is provided with a supplementary air inlet (1121) communicating with the external environment. The lifting assembly (3) includes a guide bracket (31) and a guide member (32). One of the guide bracket (31) and the guide member (32) is installed in the upper ring cavity (23), and the other is installed in the lower ring cavity (15). The guide bracket (31) has a guide groove (315) extending from top to bottom. The guide member (32) is slidably disposed in the guide groove (315) so that the upper basin (2) can switch between the storage position and the unfolded position. When the upper basin (2) is in the unfolded position, the guide (32) is located at the first end of the guide groove (315), and the lower end of the upper basin (2) is close to the upper end of the lower basin (1); when the upper basin (2) is in the stored position, the guide (32) is located at the second end of the guide groove (315), and the lower end of the upper basin (2) is close to the lower end of the lower basin (1).

2. The firewood stove according to claim 1, characterized in that The guide bracket (31) includes a guide rail plate (311), which is spaced apart from the inner and outer walls of the corresponding upper annular cavity (23) or lower annular cavity (15), and the guide rail plate (311) is provided with the guide groove (315).

3. The fire pit of claim 2, wherein, The guide bracket (31) further includes a first fixing component (33) and a second fixing component (312). At the upper and lower ends of the guide rail plate (311), one end near the first end of the guide groove (315) is detachably connected to the cavity wall of the corresponding upper ring cavity (23) or the lower ring cavity (15) through the first fixing component (33), and the other end is detachably connected to the cavity wall of the corresponding lower ring cavity (15) through the second fixing component (312).

4. The fire-pit of claim 3, wherein, The first fixing component (33) is detachably connected to the guide rail plate (311), and the first fixing component (33) is welded or bonded to the outer sidewall of the corresponding upper annular cavity (23) or lower annular cavity (15); And / or, the second fixing member (312) is formed by folding the end of the guide plate portion (311), and the second fixing member (312) is connected to the bottom of the corresponding upper ring cavity (23) or lower ring cavity (15).

5. The fire pit of claim 1, wherein, The guide groove (315) includes a lifting groove (3151) and a first groove (3152) connected to the first end of the lifting groove (3151). The lifting groove (3151) extends from top to bottom, and the first groove (3152) extends circumferentially along the upper annular cavity (23) in a direction away from the lifting groove (3151). The end of the first groove (3152) away from the lifting groove (3151) forms the first end of the guide groove (315).

6. The fire place of claim 5, wherein In the upper and lower side walls of the first groove (3152), a limiting groove (3154) is provided on the side wall near the second end of the lifting groove (3151). When the upper basin (2) is in the unfolded position, the guide (32) is accommodated in the limiting groove (3154). And / or, the lifting groove (3151) extends circumferentially from top to bottom along the corresponding upper annular cavity (23) or lower annular cavity (15); And / or, the second end of the lifting groove (3151) is connected to a second groove (3153), which extends circumferentially along the upper annular cavity (23) in a direction away from the lifting groove (3151).

7. Firewood stove according to any of claims 1 - 6, characterized in that The lower basin (1) includes a chassis (11), a lower inner shell (12) and a lower outer shell (13). The lower outer shell (13) is spaced out on the outside of the lower inner shell (12) and its lower end is connected to the chassis (11). The lower end of the lower inner shell (12) is supported on the chassis (11). The chassis (11), the lower inner shell (12) and the lower outer shell (13) together form the lower annular cavity (15). The chassis (11) and the lower inner shell (12) together form the lower combustion chamber (14). The upper basin (2) includes an upper inner shell (21) and an upper outer shell (22) sleeved on the outside of the upper inner shell (21). The upper annular cavity (23) is formed between the upper inner shell (21) and the upper outer shell (22). The upper combustion chamber (24) is formed on the inner side of the upper inner shell (21). The lower end of the upper inner shell (21) is inserted into the lower annular cavity (15), and / or the lower end of the upper outer shell (22) is sleeved on the outside of the lower outer shell (13).

8. The fire-pit of claim 7, wherein, The guide bracket (31) is installed on the lower outer shell (13) and located on the outside of the upper inner shell (21); And / or, the lower end of the upper inner shell (21) is rolled inward to form a limiting rolled edge portion (214), and the upper end of the lower inner shell (12) is folded outward to form an upper rolled edge portion (123). The projections of the upper rolled edge portion (123) and the limiting rolled edge portion (214) on the horizontal projection plane at least partially overlap.

9. The fire-pit of claim 8, wherein, The wood-burning stove includes a support frame (4) and an ash tray (7). The bottom plate (11) is recessed in the middle to form a receiving groove (1111). The ash tray (7) is placed in the receiving groove (1111). The support frame (4) is mounted on the opening of the receiving groove (1111). The support frame (4) has multiple ventilation holes (41). The groove wall of the receiving groove (1111) has multiple air inlets (1112). The air inlets (1112), the receiving groove (1111), the ventilation holes (41) and the lower combustion chamber (14) are connected in sequence. The lower inner shell (12) is located outside the support frame (4); or, the lower end of the lower inner shell (12) can be vertically and movably supported on the support frame (4).

10. The fire pit of claim 9, wherein, The chassis (11) is recessed downward to form a positioning ring groove (1141), the positioning ring groove (1141) is arranged around the opening of the receiving groove (1111), and the edge of the support frame (4) is received in the positioning ring groove (1141). And / or, the chassis (11) has a receiving recess (111) forming the receiving groove (1111) and a mounting ring (112) connected to the outside of the receiving recess (111), the lower end of the lower outer shell (13) is connected to the mounting ring (112), the wood stove also includes a support retaining ring (8), the support retaining ring (8) is sleeved on the outside of the receiving recess (111) and its upper end abuts against the mounting ring (112), the lower end of the support retaining ring (8) is lower than the receiving recess (111), and the support retaining ring (8) is provided with a plurality of air holes (82) spaced apart along the circumference.

11. The fire pit of claim 7, wherein, The wood-burning stove also includes a fire baffle ring (5), which is detachably installed on the upper end of the upper basin (2). The fire baffle ring (5) includes a conical ring portion (51) that is smaller at the top and larger at the bottom. The small port diameter of the conical ring portion (51) is smaller than the upper port diameter of the upper combustion chamber (24). And / or, the wood-burning stove includes a top cover (6) that is movably disposed on the upper basin (2) and closes the opening of the upper combustion chamber (24).

12. The fire-pit of claim 11, wherein, The upper end of the upper basin (2) is recessed downward to form a positioning groove (2121), and the lower end of the fire baffle (5) is accommodated in the positioning groove (2121). And / or, the fire shield (5) further includes an outer support ring (52) connected to the outer side of the large end of the cone ring (51), the outer support ring (52) being supported on the upper end of the upper basin (2); And / or, the fire shield (5) further includes an inner support ring (53) connected to the inner side of the small end of the cone ring (51), and the upper cover (6) is supported by the inner support ring (53).

13. The wood-burning stove according to claim 12, characterized in that, The upper cover (6) includes a cover plate portion (61), a first ring portion (62), and a second ring portion (63) connected sequentially from the inside to the outside. The first ring portion (62) is lower than the cover plate portion (61). The first ring portion (62) is sleeved on the outside of the conical ring portion (51) and its shape is adapted to the conical ring portion (51). The second ring portion (63) covers the upper side of the outer support ring portion (52).

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