Outdoor firewood stove

Abstract

The invention belongs to the field of outdoor stoves, and provides an outdoor firewood stove which comprises a stove body, a stove base and a top support, the stove body comprises an outer cylinder and a filter cover, a plurality of detachable connecting pieces used for connecting the stove base and the top support are arranged on the outer side of the outer cylinder, and an inner cylinder comprises an inner container used for containing combustible materials. A grate plate with the middle protruding upwards is arranged in the inner container, a discharging hole is formed in the grate plate, a plurality of second guide holes are formed in the grate plate and the inner container, the furnace base comprises an air inducing table arranged below the inner container and used for guiding airflow to rise, and a shell is arranged on the outer side of the air inducing table. The stove ash falls out in batches through the protruding grate plate of the inner barrel, fuel is revolved to be combusted, air is smooth, the fuel adaptability is high, combustion is efficient, airflow is guided through the design of the air catching wall and the stove body guide hole, air is effectively utilized through the design of the air catching wall, fire sparks are prevented, the stove can be used in a flat-lying mode, watering flameout is achieved, and the emergency capacity is high.

Description

Technical Field

[0001] The present invention belongs to the field of outdoor stoves, and more specifically, it is an outdoor wood stove. Background Art

[0002] An outdoor wood stove is a tool that provides heat energy by burning combustibles such as firewood during outdoor activities and is used to support a pot for cooking.

[0003] However, traditional stoves mostly use a flat grate plate as the fuel-bearing structure. The ash generated during combustion is easily accumulated on the surface and pores of the grate plate, blocking the natural air inlet path. Users need to frequently stir the fuel manually or pour out the ash to dredge the air duct. During a single cooking process, the operation needs to be interrupted 3 - 5 times. Especially in low-temperature or humid environments, the ash caking further exacerbates the blockage, resulting in a significant decrease in combustion efficiency, and even requires re-ignition. To make up for the insufficient natural air inlet, some stoves are equipped with an electric blower, but this solution relies on an external power source (such as a power bank) and is difficult to use continuously in the wild scenes of long-distance hiking without power supply. In addition, forced air supply requires users to monitor the air volume adjustment in real time, increasing the operation complexity, and the fan failure (such as motor overheating, fan blade stuck with ash) may cause the combustion to interrupt, further weakening the reliability. If users fail to intervene in the ventilation state in time, the fuel will undergo incomplete combustion due to lack of oxygen, generating a large amount of harmful gases such as carbon monoxide, and at the same time generating unburned carbonized residues. This not only leads to a decrease in the thermal energy utilization rate, but also may cause an explosion risk due to gas accumulation, or re-ignition due to residue accumulation, increasing the wildfire prevention hazard. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides an outdoor wood stove to solve the problems that most of the existing outdoor wood stoves adopt an integrated iron structure, have a high maintenance cost, and need to rely on a blower to burn, with poor fuel adaptability.

[0005] An outdoor wood stove includes a stove body, a stove base, and a top support.

[0006] The stove body includes an outer cylinder and a filter cover. A plurality of detachable connectors for connecting the stove base and the top support are arranged on the outside of the outer cylinder. The inner cylinder includes an inner tank for placing combustibles. A grate plate with a middle upward bulge is arranged inside the inner tank. The grate plate is provided with material dropping holes, and a plurality of second air guide holes are arranged on the grate plate and the inner tank.

[0007] The stove base includes an air guiding platform arranged below the inner tank for guiding the airflow to rise, and a housing is arranged on the outside of the air guiding platform.

[0008] Preferably, a filter cover is arranged on the outside of the outer cylinder, and a plurality of third air guide holes are arranged on the filter cover.

[0009] Preferably, an extension plate is provided at the top of the outer cylinder, and the extension plate covers the upper side of the filter cover. A wind hood with a notch is provided below the grate plate on the inner liner, and the arc length of the notch is between one - quarter and one - half of the inner liner circumference.

[0010] Preferably, the top support includes a support cylinder with a plurality of fire holes on the side provided on the upper side of the outer cylinder, and a plurality of cushion plates are detachably inserted into the support cylinder.

[0011] Preferably, the outer cylinder includes a plurality of cover plates for overall support. A plurality of first guide holes are provided on the cover plates, and vertical plates are provided between adjacent cover plates. A plurality of the detachable connectors are respectively provided at the joints of the vertical plates and the support cylinder, and the outer shell and the vertical plates. The detachable connectors can be selected from one of bolts, locks, buckles, pins or hooks.

[0012] Preferably, a plurality of air guide openings are provided on the side of the outer shell, and a plurality of feet are also provided on the outer shell.

[0013] Preferably, the air - guiding platform includes a conical cover provided inside the outer shell. A plurality of air - guiding plates are provided on the side of the conical cover, and the air - guiding plates are fixedly connected to the conical cover.

[0014] Preferably, a plurality of through - holes are provided on the conical cover.

[0015] Preferably, an air - guiding cover is provided at the upper end of the conical cover. The through - holes are located inside the air - guiding cover, and a narrow slit is provided at the top of the air - guiding cover for introducing air and accelerating the air flow.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Through the convex design of the grate plate on the inner cylinder in cooperation with the second guide holes and the blanking holes, the present invention enables the ash soft body formed during the combustion of the fuel to fall out of the inner liner in batches successively, and enables the unburned part of the fuel to remain in the liner and continue to burn. The upward - convex grate plate keeps the added and unburned fuel in a reclined state in the liner all the time. The second guide holes will not be completely blocked by the falling ash, so that the air at the bottom can enter the liner more smoothly and mix with the fuel for combustion. It can use a variety of fuels such as wood, branches, bark, coal, solid alcohol, liquid alcohol, etc., and can be equipped with a blower to increase the combustion temperature. It can be externally hung with a thermoelectric power generation device to expand the usage function, and has the advantages of strong fuel adaptability and high combustion efficiency.

[0018] 2. The present invention uses the combination of the furnace body and the furnace base to guide the air flow to rise into the inner cylinder, achieving natural wind oxygen supply. With the design of the wind-catching wall formed by the wind-catching shell and the notch, most of the air entering the furnace body is trapped and pushed upward into the combustion chamber in the furnace liner. In particular, the air sent in by natural wind is effectively trapped and utilized, preventing the splashing of sparks, and it can be used flat and extinguished by watering, with strong emergency response ability.

[0019] 3. The present invention connects the furnace body and the furnace base, as well as the furnace base and the top support, through detachable connectors, and each component adopts a detachable design. If a single component is damaged, it can be replaced separately without the need to discard the whole, reducing the later maintenance cost. It has the advantages of detachable maintenance and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic perspective structure diagram of the first perspective of the present invention;

[0021] Figure 2 is a schematic perspective structure diagram of the second perspective of the present invention;

[0022] Figure 3 is a schematic perspective structure diagram of the third perspective of the present invention;

[0023] Figure 4 is a schematic perspective structure diagram of the inner cylinder of the present invention;

[0024] Figure 5 is an exploded structure diagram of the present invention;

[0025] Figure 6 is a schematic perspective structure diagram of the furnace base of the present invention.

[0026] In the figure:

[0027] 1. Furnace body; 101. Outer cylinder; 1011. Vertical plate; 1012. Cover plate; 102. Filter cover; 103. Inner cylinder; 1031. Inner liner; 1032. Grate plate; 1033. Extension plate; 2. Furnace base; 201. Outer shell; 202. Air guiding platform; 2021. Conical cover; 2022. Air guiding plate; 2023. Air guiding cover; 3. Top support; 301. Support cylinder; 302. Base plate; 4. Detachable connector; 5. First guide hole; 6. Through hole; 7. Second guide hole; 8. Third guide hole; 9. Feeding hole; 10. Support leg; 11. Air outlet; 12. Fire outlet; 13. Narrow slit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following further describes in detail the embodiments of the present invention with reference to the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0029] As shown in the attached Figure 1 to the attachedFigure 6 As shown in:

[0030] The present invention provides an outdoor wood stove, which includes a combined structure of a stove body 1, a stove base 2 and a top support 3, and is connected by a detachable connector 4, facilitating the disassembly, maintenance and replacement of each component.

[0031] As shown in the attached Figure 1 to the attached Figure 3 As shown in: The stove body 1 is composed of an outer cylinder 101, a filter cover 102 and an inner cylinder 103. The outer cylinder 101 is composed of a vertical plate 1011 and a cover plate 1012, and the vertical plate 1011 and the cover plate 1012 are fixed by bolts. A first guide hole 5 with a diameter of 8-12 mm is opened on the outer side of the cover plate 1012 to form a side air inlet channel.

[0032] As shown in the attached Figure 5 As shown in: The filter cover 102 is made of high-temperature resistant stainless steel material and can be disassembled and cleaned. The surface is evenly provided with third guide holes 8 with a pore diameter smaller than that of the second guide holes 7, which can ventilate and filter out sparks, improving the safety of use.

[0033] As shown in the attached Figure 4 As shown in: The inner cylinder 103 includes an inner liner 1031 with a cylindrical accommodation space for placing fuels such as wood and coal. A grate plate 1032 is arranged in the inner liner 1031, with its middle part protruding upward by 3-5 cm and an inclination angle of 30°-45° to form a conical air inlet cavity. A cross-shaped feeding hole 9 is opened in the center. Second guide holes 7 are provided between the grate plate 1032 and the side wall of the inner liner 1031 to achieve "bottom + side" two-way air inlet. This enables the ash soft body formed during the combustion of the fuel to fall out of the inner liner in batches, and at the same time keeps the unburned part of the fuel in the liner for continuous combustion. The upward protruding grate plate 1032 keeps the added and unburned fuel in a reclined state in the liner all the time. The second guide holes 7 will not be completely blocked by the falling ash, allowing the air at the bottom to enter the liner more smoothly to mix with the fuel for combustion. Large pieces of ash can naturally fall through the feeding hole 9 to avoid blocking the air duct. The outer extension plate 1033 at the top of the inner liner 1031 covers the filter cover 102, and a wind-catching shell is arranged at the bottom of the inner liner 1031, with the notch arc length between one-fourth and one-half of the circumference of the inner liner 1031. If a notch design of one-third is adopted, most of the air entering the stove body can be caught and pushed upward into the combustion chamber in the stove liner. Especially the air sent in by natural wind can be effectively caught and utilized.

[0034] As shown in the attached Figure 1 and the attached Figure 5As shown in the figure: The top support 3 is installed at the top of the furnace body 1 and is used for pot support and flame regulation, for supporting the pot and guiding the uniform distribution of the flame. The top support 3 includes a support cylinder 301 and a backing plate 302. The side of the support cylinder 301 is provided with a fire outlet hole 12, and the flame jets upward through the fire outlet hole 12 to uniformly heat the pot. The backing plate 302 is detachably inserted into the support cylinder 301 and is used for supporting the pot and guiding the uniform distribution of the flame. A slot is provided at the top of the support cylinder 301, and the backing plate 302 is slidably inserted into the slot. The material is high-temperature resistant ceramic or cast iron, which can adapt to different sizes of pots and at the same time can adjust the flame distribution.

[0035] As shown in the attached Figure 1 figure: The detachable connecting piece 4 uses stainless steel bolts or quick-release buckles to connect the outer cylinder 101 with the furnace base 2 and the top support 3. If a single component is damaged, it can be replaced independently, and the maintenance cost is reduced by more than 70%.

[0036] As shown in the attached Figure 1 and attached Figure 6 figure: The furnace base 2 is located below the furnace body 1 and includes a housing 201 and an air guiding platform 202. The side of the housing 201 is provided with an air guiding port 11 and a support leg 10. Whether an insect-proof net is built in the interior of the air guiding port 11 can be selected according to needs to prevent sundries from entering. The furnace is lifted off the ground through the support leg 10 to enhance the ventilation and moisture-proof capabilities.

[0037] As shown in the attached Figure 1 and attached Figure 6 figure: The air guiding platform 202 is composed of a conical cover 2021 and an air guiding plate 2022. A number of through holes 6 with a diameter of 15 - 20 cm are opened at the center of the top of the conical cover 2021. The conical cover 2021 adopts a flared air intake structure to increase the air intake volume and stabilize the air flow. An air guiding cover 2023 is arranged at the upper end of the conical cover (2021). The through holes 6 are located inside the air guiding cover 2023. A narrow slit 13 is arranged at the top of the air guiding cover 2023, which is aligned with the bottom of the inner cylinder 103. The conical cover 2021 guides the natural wind to flow upward. When the gas flows through the narrow slit 13, an acceleration will be formed to accelerate the guiding of the air flow upward to the inner cylinder 103 to realize the oxygen supply of the natural wind. The air guiding plate 2022 is inclined around the conical cover 2021 at an angle of 60° and is used for guiding the air flow entering from the air guiding port 11 to rise, further increasing the air intake volume and stabilizing the air flow.

[0038] Working principle: The natural wind enters from the air guiding port 11 of the furnace base 2, and after being accelerated by the through holes 6 and the air guiding plate 2022, it enters the combustion chamber through the gap between the second guiding hole 7 at the bottom of the inner cylinder 103 and the grate plate 1032, forming an air flow cycle from bottom to top. At the same time, the first guiding hole 5 on the side of the outer cylinder 101 supplements the lateral air flow to ensure the full combustion of the fuel.

[0039] The furnace ash generated by combustion falls into the furnace base 2 through the blanking hole 9. Due to the convex design of the grate plate 1032, the furnace ash automatically slides to the surrounding areas, avoiding accumulation and blockage of the air inlet, and realizing the "self-cleaning" function.

[0040] The outer cylinder 101 and the filter cover 102 form a double-layer windproof structure. The aperture of the third guide hole 8 of the filter cover 102 is smaller than the flame diameter, which not only allows the hot air flow to pass through but also can intercept the sparks, reducing the fire risk.

[0041] The embodiments of the present invention are given for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An outdoor wood stove, characterized in that: It includes a furnace body (1), a furnace base (2) and a top support (3); The furnace body (1) includes an outer cylinder (101) and a filter cover (102). A number of detachable connectors (4) for connecting the furnace base (2) and the top support (3) are provided on the outer side of the outer cylinder (101). The inner cylinder (103) includes an inner tank (1031) for placing combustibles. A grate plate (1032) with a middle part protruding upward is arranged inside the inner tank (1031). A blanking hole (9) is provided on the grate plate (1032). A number of second guide holes (7) are provided on the grate plate (1032) and the inner tank (1031); The furnace base (2) includes an air guiding platform (202) arranged below the inner tank (1031) for guiding the airflow to rise. A housing (201) is arranged on the outer side of the air guiding platform (202).

2. The outdoor wood stove according to claim 1, characterized in that: A filter cover (102) is arranged on the outer side of the outer cylinder (101). A number of third guide holes (8) are provided on the filter cover (102).

3. The outdoor wood stove according to claim 2, wherein: An extension plate (1033) is arranged at the top of the outer cylinder (101). The extension plate (1033) covers the upper side of the filter cover (102). A wind-catching shell with a notch is arranged on the lower side of the grate plate (1032) on the inner tank (1031). The arc length of the notch is between one-fourth and one-half of the circumference of the inner tank (1031).

4. The outdoor wood stove according to claim 3, characterized in that: The top support (3) includes a support cylinder (301) with a number of fire holes (12) on the side arranged on the upper side of the outer cylinder (101). A number of cushion plates (302) are detachably inserted on the support cylinder (301).

5. The outdoor wood stove according to claim 4, characterized in that: The outer cylinder (101) includes a number of cover plates (1012) for overall support. A number of first guide holes (5) are provided on the cover plates (1012). A vertical plate (1011) is arranged between adjacent cover plates (1012). A number of the detachable connectors (4) are respectively arranged at the joints of the vertical plate (1011) and the support cylinder (301), and the housing (201) and the vertical plate (1011). The detachable connector (4) can be selected from one of bolts, latches, buckles, pins or hooks.

6. The outdoor wood stove according to claim 1, wherein: A number of air guide openings (11) are arranged on the side of the housing (201). A number of feet (10) are also arranged on the housing (201).

7. The outdoor wood stove according to claim 6, characterized in that: The air guiding platform (202) includes a conical cover (2021) arranged inside the housing (201). A number of air guide plates (2022) are arranged on the side of the conical cover (2021). The air guide plates (2022) are fixedly connected to the conical cover (2021).

8. The outdoor wood stove according to claim 7, characterized in that: A number of through holes (6) are arranged at the top of the conical cover (2021).

9. The outdoor wood stove according to claim 8, characterized in that: An air guiding cover (2023) is arranged at the upper end of the conical cover (2021). The through holes (6) are located inside the air guiding cover (2023). A narrow slit (13) is arranged at the top of the air guiding cover (2023) for introducing air and accelerating the airflow.

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