Foldable portable firewood stove

Abstract

The embodiment of the invention provides a foldable portable firewood stove, which belongs to the technical field of burners and comprises a base, a stove body and a stove head. According to the combustion structure, an air blower is adopted to pressurize and intake air, the air is preheated and then fed into the lower portion, the middle portion and the upper portion of the inner container through the first air inlet hole, the second air inlet hole and the third air inlet hole for combustion supporting, and fuel is subjected to incomplete combustion, dry distillation and gasification in the lower portion of the inner container in an oxygen-deficient state; the incompletely combusted flue gas is mixed with preheated high-temperature combustion-supporting gas at the upper part of the inner container for secondary combustion, the area of a fire outlet at the upper part of the inner container is reduced, the pressure of the fire outlet is increased, so that flames are jetted out, and the flame energy is converged. Particularly, after being stored, the whole appearance is regular to be a cylinder, outdoor packaging and carrying are convenient, the device can be used for outdoor cooking of 5-10 people, a cylindrical battery box with a replaceable battery is further designed, the battery is convenient to replace, the service time is prolonged, the whole device is designed to be light, and the total weight is smaller than 1300 g.

Description

Technical Field

[0001] The invention belongs to the technical field of burners, and in particular relates to a foldable portable wood stove. Background Art

[0002] With economic development, people's living standards are getting higher and higher, but at the same time, the pressure of work and life is getting greater. After busy work, getting out of the hustle and bustle of the city and into nature, hiking, camping, and picnicking in the wild with a family or with friends and family has become a way for people to relieve stress. According to the "TouBao Research Institute-TouBao Research Institute 2024 China Outdoor Sports Products Industry Term Report (2024-02-28)", the scale of China's outdoor sports products market in 2022 will be 190.042 billion yuan, a year-on-year increase of 21%, and the CAGR from 2018 to 2022 will be 27.1%. It is expected that the market size will reach 280.05 billion yuan by 2027. According to statistics from the China Mountaineering Association, in 2018, the number of people participating in outdoor sports in my country was 150 million, with a participation rate of 10%. According to data from the "Plan", by 2021, the number of people participating in outdoor sports in my country has exceeded 400 million, and the participation rate has rapidly risen to more than 28%. According to QYResearch's "Global Eco-Friendly Camping Equipment Market Report 2023-2029," the global eco-friendly camping equipment market is expected to reach $8.03 billion in 2029, with a compound annual growth rate (CAGR) of 5.5% over the next few years. According to Huafu Securities' "Outdoor Industry In-Depth: Health and Emotional Value, Opening a New Chapter for Domestic Demand" (by Xie Liyuan), my country's core camping market reached 74.75 billion yuan in 2021, a year-on-year increase of 63%. It is expected to reach 248.3 billion yuan by 2025, with a CAGR of 35%. Outdoor stoves account for approximately 5% of the market share.

[0003] Outdoor picnics are a great pleasure in outdoor life. If you can have a delicious picnic outdoors, it will definitely increase the fun of outdoor activities. However, to carry out a picnic, you cannot do without stoves. Especially for heavy-duty long-distance hiking enthusiasts, lightweight and multifunctional outdoor equipment is a rigid demand.

[0004] In the existing related technologies, outdoor picnics usually adopt the following methods:

[0005] 1. Electrical appliances:

[0006] Electricity is a safe and clean energy source. While it would be great if you could use an electric rice cooker or induction cooker outdoors, cooking requires high-power appliances, typically between 1,000 and 3,000 watts. This requires large batteries, which are bulky and heavy (typically over 10 kilograms), making them suitable only for use in areas accessible by vehicle.

[0007] Generally, most of these places are scenic spots with many people and high fees. In addition, the price of such car power supplies is often tens of thousands of yuan, which is not suitable for most people.

[0008] 2. Gas furnace:

[0009] There are two main forms of outdoor gas;

[0010] One is the traditional liquefied gas tank, which requires little investment and is low cost. However, due to its heavy weight (usually over 5 kg), it is only suitable for vehicle use. If you want to go to a place closer to nature, you cannot carry it with you. At the same time, this type of gas tank is not safe and is prohibited in many places.

[0011] There is also an outdoor gas tank, which is generally propane gas. There are three main specifications on the market: 110 grams, 220 grams and 450 grams. The prices are about 10 yuan, 18 yuan and 30 yuan respectively. Depending on the selected burner and the firepower, it can burn for about 40 minutes to 180 minutes. It requires a special outdoor burner that is easy to carry. Generally, those who choose heavy-duty outdoor camping will carry such cooking utensils. This stove is small and is generally suitable for 1 to 5 people. The pots cannot be too large, and the burner generally bears a weight of 1 to 5 kilograms. However, when there are more people (more than 5 people) or the outdoor living time is a little longer (more than 1 day), it is necessary to carry a lot of gas tanks, which also increases the weight of travel and cannot meet the needs. Similarly, this type of gas tank cannot be taken on public transportation facilities, and it is not convenient to carry outside;

[0012] 3. Wood stove:

[0013] When you go outdoors, you generally have access to fuel such as branches, so a wood stove has become an option for outdoor living. If you are using a car, you can choose a larger wood stove, while if you are carrying it on your back, you should choose a small and lightweight wood stove. The fuel for a wood stove is taken from natural waste and is an environmentally friendly and energy-saving cooker.

[0014] Existing portable wood stoves suitable for outdoor use either lack their own power supply and require an external power bank. In actual use, the power bank connection cable is easily stepped on, soaked in water, or broken, making it inconvenient to use. Alternatively, batteries and blowers are installed on the side of the stove body, making the stove body very irregular and inconvenient to carry. In addition, existing portable wood stoves with pressurized blowers are not foldable, are generally more than 25 cm or even more than 38 cm in height, and generally exceed 16 cm in diameter, generally around 20 cm. They generally weigh more than 1.7 kg or even up to 3 kg, making them very unsuitable for hiking. Without a pressurized blower, there are problems such as incomplete combustion, large amounts of smoke, and insufficient firepower.

[0015] The present invention provides a foldable portable wood stove with a diameter of 15.9 cm, a height of 22.5 cm when unfolded, a height of 10.8 cm when folded, and a weight of approximately 1290 grams (all parts are integrated, and when folded, it becomes a cylinder with a diameter of 16 cm and a height of 10.8 cm, which can be stored and packed into aluminum alloy and / or titanium alloy cookware of the same specifications). The stove is easy to load and carry, and is suitable for outdoor picnics for 3 to 10 people.

[0016] This invention features a compact, foldable structure, making it lightweight and portable. When folded, it's compact and easy to carry, and can utilize plant fuels such as tree branches, making it economical and affordable. A blower-driven air supply and a unique air duct structure ensure more complete combustion, resulting in a powerful firepower equivalent to 3000W. The measured flame temperature at the burner can reach over 950°C, and stable operation can reach between 750°C and 950°C depending on the fuel. The use of secondary combustion technology results in virtually smokeless combustion, which protects the cookware from blackening and is environmentally friendly and hygienic, making it particularly suitable for extended outdoor cookouts with multiple people. Summary of the Invention

[0017] The main purpose of the present invention is to provide a foldable portable wood stove to solve the problem of cooking stoves during outdoor activities, especially heavy hiking outdoor activities.

[0018] To achieve the above objectives, the present invention provides a foldable portable wood stove, which includes a base, a stove body, and a burner. The stove body screws are installed on the upper part of the base, and the burner screws are installed on the upper part of the stove body.

[0019] Preferably, the base is arranged at the lower part of the wood stove, and the base includes a base base, a control box, a control box liner, a control panel, a furnace bottom bracket bearing base, a furnace bottom bracket, and a furnace bottom bracket bearing, wherein the base base is screwed upward to the furnace body, the upper part of the control box is screwed to the base base, the control box liner is installed inside the control box, the control panel is located on one side of the control box, the furnace bottom bracket bearing base is screwed to the base base, and the furnace bottom bracket is fixed to the furnace bottom bracket bearing base through the furnace bottom bracket bearing.

[0020] Preferably, the furnace body is arranged on the upper part of the base, and the furnace body includes an inner container, a sealing layer, a protective layer, an inner container bracket, an air guide pipe, a first fixing screw, a second fixing screw, a quick release screw, and a quick buckle;

[0021] Wherein, the inner pot, the sealing layer and the protective layer all include three parts: upper, middle and lower parts (respectively, the lower part of the inner pot, the middle part of the inner pot, the upper part of the inner pot, the lower part of the sealing layer, the middle part of the sealing layer, the upper part of the sealing layer, the lower part of the protective layer, the middle part of the protective layer and the upper part of the protective layer), wherein the upper, middle and lower parts of the inner pot and the sealing layer are all large and small mouth structures and are interference-connected from bottom to top, the upper end of the upper part of the protective layer and the burner are connected by a second fixing screw, the lower end of the lower part of the protective layer and the base are connected by a first fixing screw, the outer curling edge of the upper end of the middle part of the protective layer and the inner curling edge of the lower end of the upper part of the protective layer form the quick buckle clamping connection, and the lower end of the middle part of the protective layer and the upper end of the lower part of the protective layer are connected by a hand-tightened quick-release screw;

[0022] The protective layer is porous, and the outer wall of the inner liner is provided with a first air inlet hole distributed in an annular manner at the bottom end of the lower portion of the inner liner, a second air inlet hole is vertically distributed on the outer wall of the lower portion and the middle portion of the inner liner and is inclined at a certain angle to the outer wall, and a third air inlet hole is distributed in an annular manner on the upper portion of the inner liner;

[0023] The lower part of the inner pot is placed on two inner pot brackets that are clamped together in a cross-fingered manner. The inner pot bracket is placed on the bottom of the lower part of the closed layer. The lower part of the closed layer is connected to the base of the base by screws. The upper end of the upper part of the closed layer and the bottom of the burner are pressed and sealed, and the upper port of the inner pot and the burner are connected by interference fit.

[0024] Preferably, the burner is arranged on the upper part of the wood-fired stove, and the burner includes a burner base, a burner bracket bearing base, a vertical bracket bearing, a vertical bracket, a horizontal bracket, and a horizontal bracket bearing. The burner base is provided with a trumpet-shaped structure with a small opening at the lower end of the burner and a large opening at the upper end of the burner. The small opening at the lower end and the small opening at the upper end of the inner tank are interference-connected. The burner bracket bearing base is installed on the inclined surface of the large opening at the upper end of the burner. The vertical bracket is fixed to the burner bracket bearing base by the vertical bracket bearing and can rotate around the vertical bracket bearing. The horizontal bracket is connected to the vertical bracket through the horizontal bracket bearing. The lower part of the large opening at the upper end of the burner base is also pressed and sealed against the upper part of the sealing layer.

[0025] Preferably, the foldable portable wood stove has an unfolded state and a folded state;

[0026] Wherein, in the expanded state, the furnace bottom bracket is in a pulled-out expanded state, the inner liner and the sealing layer of the furnace body are interference-connected from bottom to top in sequence, with the large opening at the lower end and the small opening at the upper end, the lower part of the protective layer and the base of the base are connected with a first fixing screw, the upper part of the protective layer and the burner base of the burner are connected with a second fixing screw, the upper end of the middle part of the protective layer and the upper part of the protective layer are connected by an inner flange and an outer flange to form a quick buckle connection, the lower end of the middle part of the protective layer and the upper end of the lower part of the protective layer are connected by a hand-tightened quick-release screw, and the burner vertical bracket is in an expanded state perpendicular to the outer plane of the burner base or perpendicular to the inclined surface of the burner;

[0027] In which, in the folded state, the furnace bottom bracket is slid and stored into the gap between the closing layer and the protective layer in the furnace body through the furnace bottom bracket storage hole, and the furnace body is disassembled by opening the hand-twisted quick-release screws. The inner pot and the upper and middle parts of the closing layer are turned upside down and inserted into the lower part of the inner pot and the lower part of the closing layer. The lower part and the middle part of the protective layer are inserted into the upper part of the protective layer for storage. The lower part of the protective layer and the burner head are connected with the hand-twisted quick-release screws, and the vertical bracket rotates and drives the horizontal bracket to rotate and be stored inside the upper part of the inner pot.

[0028] The top end of the first vent is connected to the bottom end of the frame by a screw thread on the top of the frame, and the bottom end of the frame is connected to the bottom end of the frame by a screw thread on the top of the frame.

[0029] Preferably, the control box inner shell includes a circuit structure and an air duct structure;

[0030] The circuit structure includes a battery compartment, a control mainboard, a magnetic connector, a control panel, and a cylindrical battery box. The cylindrical battery box is placed in the battery compartment. The cylindrical battery box is connected to the control mainboard through the magnetic connector at the top of the battery compartment to provide power to the control mainboard. The control panel is located on one side of the circuit structure and includes a TYPEC charge and discharge port, a blower speed control switch potentiometer, a battery circuit, and a charge and discharge status indicator digital tube.

[0031] Among them, the air duct structure includes a blower air inlet, an inner liner air outlet, and a blower. The air outlet of the blower is plugged into the blower air inlet. The inner liner air outlet is connected to the first ventilation hole and then connected to the lower part of the closed layer. The air duct structure, inner liner bracket, inner liner, the middle gap of the closed layer, the first air inlet, the second air inlet, and the third air inlet form an air preheating and air distribution channel.

[0032] Preferably, the vertical bracket can rotate around the vertical bracket bearing, and the horizontal bracket can rotate around the horizontal bracket bearing and slide along the vertical bracket notch;

[0033] Wherein, the vertical bracket and the horizontal bracket have an unfolded state and a folded state;

[0034] In the unfolded state, the vertical bracket has two installation states. The vertical bracket can be perpendicular to the horizontal portion of the outer periphery of the burner base. At this time, the horizontal bracket slides to the top of the notch on the vertical bracket. The horizontal bracket has serrations on it for placing cookware. The vertical bracket can also be arranged perpendicular to the inclined portion of the burner base. At this time, the top of the vertical bracket is horizontal and has serrations on it for placing cookware. At this time, the horizontal bracket slides to the bottom of the notch on the vertical bracket. The other end of the horizontal bracket is provided with a cylindrical snap-fit ​​that is inserted into the circular positioning hole provided on the horizontal portion of the outer periphery of the burner base for snap connection.

[0035] In the folded state, the vertical bracket rotates to the inner side of the burner base, and drives the horizontal bracket to rotate and be stored in the upper part of the inner pot.

[0036] Preferably, the cylindrical battery box includes a battery box shell, a battery box liner, a battery, a battery box control board, a control board connecting copper column, a TYPEC charging and discharging port, a magnetic connector, and a battery box hook;

[0037] The battery box housing includes a twistable battery box cover, a battery box hook, a battery box main compartment, and a battery compartment, and the battery box cover and the battery box main compartment are threadedly connected;

[0038] Among them, the battery box liner is placed in the main compartment of the battery box, and the battery is placed in the battery compartment on one side of the battery box liner. The battery is a single-cell cylindrical lithium battery. The battery box control board is composed of two circular circuit boards, which are connected and supported by the copper column connecting the control board in the middle. The battery box control board is provided with the TPPEC charging and discharging port, and the TYPEC charging and discharging port is located at the other end of the battery box. The battery control board is also provided with a magnetic connector, which includes positive and negative terminals that are connected to the positive and negative poles of the battery after passing through the lithium battery protection chip of the battery box control board. The battery box control board uses the Yingjixin IP5356 series chip that supports lithium battery charging and discharging functions and supports fast charging protocols such as PD3.0 as the main control chip.

[0039] Preferably, the inner liner bracket is characterized in that it also includes an inner liner upper bracket and an inner liner lower bracket, and the inner liner bracket is also provided with an inner liner bracket first leg, an inner liner bracket second leg, an inner liner positioning arc of the inner liner bracket, an inner liner bracket clamping slot, and an inner liner bracket sealing layer clamping terminal. The inner liner upper bracket and the inner liner lower bracket are clamped by slots located in opposite directions of the middle openings of the upper and lower brackets of the inner liner, the first leg of the inner liner bracket is slightly shorter than the second leg of the inner liner bracket, the curvature of the inner liner positioning arc of the inner liner bracket is consistent with the curvature of the bottom of the lower part of the inner liner, the diameter of the inner liner bracket sealing layer clamping terminal is consistent with the inner diameter of the lower part of the sealing layer, and the inner liner bracket is arranged between the lower part of the inner liner and the lower part of the sealing layer to form a cavity between the inner liner and the lower part of the sealing layer.

[0040] Compared with the prior art, the innovation of this new method is:

[0041] 1. The present invention uses a blower to boost oxygen supply, preheats the combustion-supporting gas through the closed cavity formed between the inner liner bracket, the inner liner, and the sealing layer, provides high-temperature combustion-supporting gas for the inner liner, and improves the combustion effect. The number of the first air inlet holes is small and the aperture is small. The lower part of the inner liner is in an oxygen-deficient combustion state, and the fuel is mainly in a dry distillation state for gasification. The second air inlet hole and the outer wall are at a certain angle, so that the combustion-supporting gas enters the inner liner obliquely, and promotes the gasified gas to spiral up quickly, reducing the time it takes for combustion to occur in the middle of the inner liner. The third air inlet hole is located at the upper part of the inner liner. The large number of the third air inlet holes is conducive to the full combustion of the fuel. According to the characteristics of fluid mechanics, the diameter of the inner tank is reduced and the gas flow rate is large here, and the combustion-supporting gas is sprayed into the inner tank to participate in the secondary combustion of the fuel, visually forming the effect of flame ejecting from the third air inlet. Therefore, the combustion here mainly occurs from the vaporized gas and the preheated high-temperature combustion-supporting gas, so a high-temperature flame is formed. The measured temperature can reach above 950 degrees. Depending on the fuel, the measured stable operating temperature is between 750 and 950 degrees. The upper part of the inner tank and the lower part of the burner base are connected to form a fire outlet. The diameter of the fire outlet is about half of the diameter of the inner tank, so the flame flow rate is increased, forming a jet effect and a fire gathering effect.

[0042] 2. The present invention adopts a layered design of the inner tank, the sealing layer and the protective layer, with the diameter continuously reduced from bottom to top, and interference-connected in sequence. On the one hand, under the premise of ensuring that the combustion space inside the inner tank is large enough, the upper diameter is reduced to form a supercharging effect, and at the same time, the size of related parts is reduced, which is conducive to reducing the overall weight (the measured weight is less than 1300 grams). At the same time, a structure with a large bottom and a small top is adopted. In the inverted state, the upper parts can be stored in the lower parts for storage. The whole can be opened by the hand-twisted quick-release screws in the middle of the outer protective layer, and the internal parts can be inverted for storage or unfolded for installation. The upper and lower parts of the protective layer are fixed to the base and the burner head respectively by the first fixing screw and the second fixing screw. Only the middle part of the protective layer can be slid for storage. Because the height of the inner tank and the sealing layer is slightly higher than the unfolded height of the protective layer during design, the main load-bearing components of this wood stove are the inner tank and the sealing layer. The protective layer mainly plays a tightening role. When in the unfolded state, the outer curling edge at the upper middle end of the protective layer and the inner curling edge at the upper part of the protective layer are clamped with each other, and the hand-twisted quick-release screws in the middle of the protective layer are screwed to the lower part of the protective layer. The present invention also designs a foldable and storable stove head bracket and stove bottom bracket to further reduce the height in the folded state. At the same time, the product of the present invention is completely a smooth cylinder after being stored, which is convenient for packing and carrying during hiking. The entire unfolding and folding process can be completed by only three hand-twisted quick-release screws. The layered design is also beneficial to the subsequent maintenance and repair of the product. Due to the harsh conditions of outdoor activities, collisions and other problems often occur. The layered design is conducive to the replacement and repair of parts, especially the upper part of the inner liner has many holes and is in the high-temperature combustion zone. It is generally most susceptible to aging and damage. The layered quick-release structure is beneficial to the quick and low-cost replacement of the inner liner after the inner liner is burned during later use.

[0043] 3. The present invention has designed a dedicated cylindrical battery box, which has complete lithium battery charging and discharging functions. The outer shell can be opened to replace the battery. According to actual measurements, one 21700 battery can work continuously for 6 hours at maximum power and 8.5 hours at 70% power (actual working state). Hikers can carry several 21700 batteries to ensure dozens of hours of use. Generally, a hiker needs to work for 3 hours a day (it takes about 9 minutes to boil a 28 cm wok of water). Three batteries can support 6 to 10 days of use, greatly reducing the weight of the backpack. If you carry traditional gas cylinders, without considering the gas stove head, the weight of the gas cylinders for the same burning time is at least 4000 grams (calculated based on a 450-gram gas cylinder weighing 650 grams, which can generally burn for 160 minutes, and the burning time in winter is less than 70%), which is much heavier than the total weight of the wood stove of 1300 grams. Even considering the total weight of the two extra batteries, it is less than 1500 grams. Therefore, the wood stove has greater advantages for long-distance hikers. In addition to tightening and fixing the inner liner and the sealing layer, the protective layer also has an anti-scalding effect. The large amount of hollowing increases the dispersion. On the other hand, the thermal area reduces the weight of the product. The cylindrical battery box is connected to the control motherboard via a magnetic connector, which is convenient for quick disassembly and replacement of batteries. At the same time, this cylindrical battery has great scalability. In the future, more expansion components such as flashlight heads, air pumps, shaver heads, etc. are planned to be designed. As long as the cylindrical battery box is connected via magnetic attraction, it can be used for lighting, inflating outdoor air cushions, etc. The cylindrical battery box control board consists of two parallel circular motherboards. The two motherboards are supported, connected and transmitted by copper pillars, realizing the support of 22.5W multi-protocol fast charging function in a limited space. This solves the problem that similar products on the market only support the charging mode with a USBA port on one end and a TYPEC port on the other end, but do not support the fast charging protocol with TYPEC charging heads on both ends. In recent years, chargers or power banks have been transitioning to TYPEC ports, and USBA ports are on the verge of being eliminated. Because it supports full-protocol charging, this battery box can be used as an emergency power bank to charge most devices with TYPEC ports on the market, further increasing the versatility of the present invention and conforming to the development trend of lightweight / multifunctional outdoor products.

[0044] 4. The present invention designs a special burner bracket and a bottom bracket, wherein the burner bracket can work in two states. When the vertical bracket is perpendicular to the plane position of the burner base, the horizontal bracket slides to the top end and unfolds, and large pots can be placed. When the vertical bracket is perpendicular to the inclined position of the burner base, the horizontal bracket slides to the bottom end and snaps into the positioning hole, which tightens and positions the vertical bracket. At this time, the top end of the vertical bracket is in a horizontal position, and small cookware can be placed. When the vertical bracket continues to rotate to the inside of the burner, it drives the horizontal bracket into the upper part of the inner tank to achieve the purpose of folding and storage, and the bottom bracket can be completely stored into the interior of the furnace body by sliding into the gap between the sealing layer and the protective layer. At this time, the bottom end of the bottom bracket is slightly higher than the control box. If the ground is flat, the bottom bracket can be placed directly on the horizontal ground without unfolding.

[0045] 5. The present invention designs a special control box inner tank air duct structure. During the actual measurement process, when the traditional side air inlet design on the market was used, due to the inconsistent wind speed and wind pressure at the center and edge of the blower outlet, and the air inlet being at the bottom side of the closed layer, the problem of uneven distribution of combustion-supporting gas was tested. Specifically, it manifested in uneven combustion, uneven flame at the fire outlet, and then led to a series of problems such as uneven heating of the outer shell. Through the optimization of the air duct structure, the blower outlet air is guided through the spiral rising air duct structure, and the wind speed and wind direction are adjusted. Finally, it enters the furnace body from the first ventilation hole in the center of the closed layer, ensuring the uniform distribution of combustion-supporting gas around the inner tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other embodiment drawings can be obtained based on the structures disclosed in these drawings without paying any creative work.

[0047] Figure 1 A schematic diagram of the overall front view provided by the present invention;

[0048] Figure 2 A schematic front view of the base provided by the present invention;

[0049] Figure 3 A schematic front view of the furnace structure in the unfolded state provided by the present invention;

[0050] Figure 4 A schematic front view of the overall structure of the present invention in a folded state;

[0051] Figure 5 This is a schematic structural diagram of the front view of the burner in the unfolded state provided by the present invention;

[0052] Figure 6 A schematic top view of the base provided by the present invention;

[0053] Figure 7 A schematic diagram of the furnace bottom support provided by the present invention and its unfolded and folded states;

[0054] Figure 8 A schematic diagram of the inner shell of the control box provided by the present invention;

[0055] Figure 9 Schematic diagram of the burner bracket provided by the present invention in two unfolded states and one folded state;

[0056] Figure 10 A schematic diagram of the cylindrical battery box structure provided by the present invention;

[0057] Figure 11 A circuit schematic diagram of the battery box control board provided by the present invention;

[0058] Figure 12 and Figure 13 A schematic diagram of the control box circuit board PCB layout provided by the present invention;

[0059] Figure 14 This is a schematic diagram of the control mainboard PCB layout provided by the present invention;

[0060] Figure 15 A schematic diagram of the control panel layout provided by the present invention;

[0061] Figure 16 A schematic diagram of the inner liner support provided by the present invention;

[0062] Figure 17 A schematic diagram of the control mainboard and cylindrical battery box provided by the present invention;

[0063] Figure 18 A schematic diagram of an actual combustion flame provided by the present invention;

[0064] Figure 19 A schematic diagram of the combustion flame temperature test provided by the present invention;

[0065] Figure 20 A schematic diagram of the control box provided by the present invention and the control box liner installed;

[0066] Description of main figures:

[0067] 1. Base; 11. Base base; 111. Protective layer mounting leg; 113. Second fixing hole of furnace bottom bracket bearing base;

[0068] 116, first vent; 117, furnace bottom bracket storage hole; 12, control box; 13, control box liner; 131, circuit structure; 1311, battery compartment; 1312, control mainboard; 1313, magnetic connector; 1314, cylindrical battery box;

[0069] 132. Air duct structure; 1321. Blower air inlet; 1322. Inner liner air outlet; 1323. Blower; 14. Control panel; 15. Furnace bottom bracket bearing base; 151. First fixing hole; 16. Furnace bottom bracket; 161. Furnace bottom bracket guide slot; 162. Furnace bottom bracket fixing hole; 17. Furnace bottom bracket bearing; 2. Furnace body; 21. Inner liner; 211. Lower portion of inner liner; 212. Middle portion of inner liner; 213. Upper portion of inner liner; 214. First air inlet; 215. Second air inlet; 216. Third air inlet; 217. Upper port of inner liner; 22. Sealing layer; 221. Lower portion of sealing layer; 222. Middle portion of sealing layer;

[0070] 223. Upper portion of the sealing layer; 23. Protective layer; 231. Lower portion of the protective layer; 232. Middle portion of the protective layer; 233. Upper portion of the protective layer; 24. Inner container bracket; 25. Air duct; 26. First fixing screw; 27. Second fixing screw; 28. Hand-tightened quick-release screw; 29. ​​Quick-release buckle; 3. Burner; 31. Burner base; 311. Large opening at the upper end of the burner; 312. Small opening at the lower end of the burner; 313. First fixing hole; 314. Second fixing hole; 315. Circular positioning hole; 32. Burner bracket bearing base; 33. Vertical bracket bearing; 34. Vertical bracket; 341. Vertical bracket notch; 35. Horizontal bracket; 353. Cylindrical buckle; 36. Horizontal bracket bearing; DETAILED DESCRIPTION

[0071] The technical solutions in the embodiments of the present invention will be further described in detail below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0072] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship between the various parts in a certain specific state. If the specific state changes, the directional indications will also change accordingly.

[0073] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly including at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes Scheme A, Scheme B, or a scheme in which Scheme A and Scheme B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection of the present invention.

[0074] The present invention provides a foldable portable wood stove:

[0075] As attached Figure 1 As shown: The present invention provides a foldable portable wood stove, which comprises a base 1, a stove body 2, and a burner 3 from bottom to top. It is connected by interference fit and / or snap fit and / or screws, and can be quickly disassembled for easy folding, storage and / or replacement of parts.

[0076] As attached Figure 2 and attached Figure 6 As shown: the base is mainly composed of a base base 11, a control box 12, a control box liner 13, a control panel 14, a furnace bottom bracket bearing base 15, a furnace bottom bracket 16, a protective layer mounting leg 111, and a first vent 116. The base is the main load-bearing component and structural main body of the entire wood stove. The wood stove body 1 is connected and mounted on the protective layer mounting leg 111 by a first fixing screw 26. The control box 12 and the furnace bottom bracket bearing base 15 are screwed to the lower part of the base. The base is also provided with a plurality of small holes and internal threads for installing or positioning other components. In order to ensure structural strength, the base base 11, the furnace bottom bracket bearing base 15, the furnace bottom bracket The bottom bracket 16 is made of 304 or 316L stainless steel with a thickness of 1.5 to 2 mm, and can also be made of titanium alloy material of the same thickness. The first vent 116 is connected to the control box inner tank air outlet 1322 downwardly, and is connected to the lower part 221 of the closed layer upwardly through the air duct 25. The lower part of the first vent 116 is a low-temperature area, and the upper part of the first vent is a high-temperature area. The interval between the first vent 116 and the lower part 221 of the closed layer is 8 to 10 mm for heat insulation. In the actual implementation process, heat insulation material can be further added here. On the one hand, the working temperature of the low-temperature area is further reduced, and on the other hand, the heat loss in the high-temperature area is reduced, thereby improving the preheating effect of the combustion-supporting gas. Figure 2 and attached Figure 6 As shown, the base of the base has been hollowed out in large quantities, the main function of which is to reduce the overall weight of the product (the actual product preparation shows a weight reduction of about 40%) and reduce heat conduction.

[0077] As attached Figure 3 and attached Figure 4 As shown: the furnace body 2 is composed of an inner liner 21, a sealing layer 22, a protective layer 23, an inner liner bracket 24, an air duct 25, a first fixing screw 26, a second fixing screw 27, a hand-tightened quick-release screw 28, and a quick buckle 29. The inner liner 21, the sealing layer 22, and the protective layer 23 are divided into three parts: upper, middle, and lower. The inner liner 31 can be made of high-temperature and corrosion-resistant 316L or 310S stainless steel with a thickness of 0.8 to 1.2 mm. The sealing layer can be made of 201 stainless steel with a thickness of 0.3 to reduce costs. The protective layer can be made of 304 stainless steel with a thickness of 0.4 to facilitate surface treatment and enhance the appearance of the product. The three parts of the inner liner 21 and the sealing layer 22 have gradually smaller diameters from bottom to top, and the upper and lower parts are interlocked by the structure formed by expanding and / or reducing the diameter to ensure mutual airtightness. At the same time, if the middle and upper parts are turned upside down, the lower part of the corresponding part (such as Figure 4 As shown), the height of each component is adjusted during design to ensure that each component can be tightly pressed against the lower part of the burner head 3 in both the expanded and folded states. The protective layer is designed to gradually expand in diameter from bottom to top. In specific implementation, the total height of the inner tank 21 and the closed layer 22 in the expanded state is slightly higher than the total height of the protective layer in the expanded state. Therefore, the protective layer is mainly subjected to tension. In the stored state, the upper end hole 231 of the protective layer and the second fixing hole 314 of the burner head 3 are connected by hand-tightening the quick-release screw 28, so that the furnace body 2 is in a tightly connected state regardless of whether it is in the expanded state or the folded state, ensuring that no abnormal noise, loose accessories, or loss of accessories will occur. In addition, the protective layer also mainly plays a role in preventing scalding, preventing the high temperature of the closed layer from directly contacting the user. A large amount of hollowing out of the protective layer increases air convection and improves the heat dissipation effect on the one hand, and reduces the weight of the product by about 40% on the other hand. The first air inlet 214 is located at the lower end of the inner liner lower part 211. The aperture is small and the number is small. When the combustion-supporting gas is insufficient, the inner liner lower part 211 is in an oxygen-deficient state, and the fuel cannot be completely burned. It is mainly in a dry distillation gasification state. The unburned mixed gas after vaporization rises rapidly under the drive of the airflow from the second air inlet 215. After reaching the inner liner upper part 213, it mixes with the high-temperature combustion-supporting gas from the third air inlet 216 to cause secondary combustion.

[0078] As attached Figure 5 and attached Figure 4As shown: the burner 3 is mainly composed of a burner base 31, a burner bracket bearing base 32, a vertical bracket bearing 33, a vertical bracket 34, a horizontal bracket 35, and a horizontal bracket bearing 36. Among them, the burner base 31 is the main body of the burner 3, and the other components are all installed and fixed on the burner base 31. The burner bracket bearing base 32 is installed in the middle position of the inclined surface of the burner base 31, and the vertical bracket bearing 33 is installed thereon. The vertical bracket 34 is connected to the burner bracket bearing base 32 by the vertical bracket bearing 33 and can be rotated to different angles around the vertical bracket bearing 33. The horizontal bracket 35 is connected to the vertical bracket 34 by the horizontal bracket bearing 36 and can slide along the slot 341 on the vertical bracket 34. The outer periphery of the burner base 31 is designed with a bent connecting leg with two rows of small holes, of which the upper small hole is the first fixing hole 313 It is used to be connected to the upper part 233 of the protective layer by a second fixing screw. The small hole below is the second fixing hole 314, which is vacant in the unfolded state and is connected to the lower part 231 of the protective layer by a hand-tightened quick-release screw 28 in the folded state. The small opening 312 at the lower end of the burner 3 is inserted into the upper part 233 of the inner tank to form a fire outlet. The inner diameter of the fire outlet is designed to be slightly larger than half of the radius of the lower and middle parts of the inner tank. Secondary combustion occurs at the connection between the upper part 233 of the inner tank and the burner 3. The diameter here is rapidly reduced. According to fluid mechanics, it can be seen that the gas flow rate and pressure here increase to form a flame jet effect. The burner 3 is made of the same material as the inner tank to ensure that it has the same thermal expansion coefficient and high temperature resistance.

[0079] As attached Figure 7 and attached Figure 4 As shown: the bottom of the furnace bottom bracket bearing base 15 is provided with two mounting holes 151, which are connected to the base 1 through screws. The furnace bottom bracket 16 is installed on the furnace bottom bracket bearing base 15 and is fixed by the furnace bottom bracket bearing 152. The furnace bottom bracket 16 can rotate around the furnace bottom bracket bearing 152. When the furnace bottom bracket 16 is pulled out and rotated outward, the furnace bottom bracket 16 will open outward to support the furnace bottom base 11. The three furnace bottom brackets 16 are distributed at an angle of 120 degrees. The triangular support ensures the stability of the entire furnace body 2. When the furnace bottom bracket is pushed back to the other end, the furnace bottom bracket will be received into the space between the lower part 221 of the closed layer and the lower part 231 of the protective layer through the furnace bottom bracket storage hole 117 located on the base 11. After the storage is completed, the top of the furnace bottom bracket 16 is slightly higher than the control box 12. When the ground is level, the furnace bottom bracket 16 can be placed directly on the ground for use without opening it.

[0080] As attached Figure 8 , Attachment Figure 20 , Attachment Figure 10 and attached Figure 14As shown: the control box liner 13 is installed inside the control box 12, and the control box liner 13 includes a circuit structure 131 and an air duct structure 132, wherein the circuit structure 131 mainly includes a battery compartment 1311, a control mainboard 1312, and a magnetic connector 1313, and the air duct structure 132 mainly includes a blower air inlet 1321, an inner liner air outlet 1322, and a blower 1323. The cylindrical battery box 1314 is installed in the battery compartment 1311, and the magnetic connector 13147 on the top of the cylindrical battery box 1314 is connected to the magnetic connector 1313 on the control box liner 13 to provide power for the control mainboard 1312, and the control mainboard 1312 outputs a voltage and current matching the blower 1323 to drive the blower 1323, and provides speed regulation and battery charging and discharging and status indication functions. The control motherboard 13 purchased a motherboard with these functions from Taobao Mall. The control motherboard can also be optimized and customized during the specific implementation process. The blower 1323 uses a 6015 or 6025 turbo blower. The pressurized air enters from the blower air inlet 1321, and is discharged from the inner tank air outlet 1322 after being turned. After passing through the air guide duct 25, it enters the gap between the inner tank 21 and the sealing layer 22 for preheating and enters different positions of the inner tank through the first air inlet 214, the second air inlet 215, and the third air inlet 216 to participate in combustion. The combustion-supporting gas after turning and guidance enters from the center of the lower part 221 of the sealing layer, ensuring the uniform distribution of the combustion-supporting gas. The control box is made of 0.3 mm thick 304 stainless steel material, and the inner tank of the control box is a plastic part for injection molding and / or 3D printing.

[0081] As attached Figure 9 As shown: the burner bracket bearing base 32 is installed on the inclined surface of the burner base 31, and the burner vertical bracket 34 and the burner horizontal bracket 35 have three different unfolding and / or folding storage states. Figure 9 The vertical bracket 34 can be perpendicular to the outer plane of the burner base 31. At this time, the protrusion at the lower end of the vertical bracket 34 is inserted into the positioning hole 315 on the outer horizontal surface of the burner base 34 to form a support structure for the horizontal bracket 35. At this time, the horizontal bracket 35 slides to the upper part of the vertical bracket 34. The arc-shaped upper part has a serrated structure to support large pots. The serrated structure also has the function of preventing the pot from sliding. In the second case (see Figure 2), the vertical bracket 34 can be perpendicular to the outer plane of the burner base 31. At this time, ... horizontal bracket 35 slides to the upper part of the vertical bracket 34. The arc-shaped upper part has a serrated structure to support large pots. The serrated structure also has the function of preventing the pot from sliding. Figure 9 The lower vertical bracket 34 can be perpendicular to the inclined portion of the burner base 31. At this time, the side of the vertical bracket 34 faces upward, and there are serrations on it to support small pots. At this time, the horizontal bracket 35 needs to slide to the bottom of the vertical bracket guide groove 341. The cylindrical buckle 353 at the end of the horizontal bracket is inserted into the positioning hole 315 to provide a tightening and fixing effect on the vertical bracket 34. The third case (see Figure 3) Figure 9As shown in the figure below, the lower vertical bracket 34 continues to rotate to the inside of the burner base 31, driving the horizontal bracket 35 to be stored into the upper part 213 of the inner tank. At this time, the upper end of the vertical bracket 34 is consistent with the plane of the burner base 31 for easy storage.

[0082] As attached Figure 10 As shown: the cylindrical battery box 1314 includes a battery box shell 13141, a battery box liner 13142, a battery 13143, a battery box control board 13144, a control board connecting copper column 13145, a TYPEC charging and discharging port 13146, a magnetic connector 13147 and a battery box hook 13148. The battery box shell 13141 adopts an aluminum alloy tube with an outer diameter of 25 and a wall thickness of 1 mm. The battery box shell is divided into two sections: a battery box cover 131411 and a battery box main compartment 131412. They are connected by threads and can be easily opened to replace the battery 13143. The battery is a cylindrical lithium-ion battery. According to the diameter specification of the embodiment, lithium-ion batteries of different specifications such as 18650, 21700, and 26650 can be selected to provide power for the control motherboard 1312. The cylindrical battery box contains a plastic liner inside, which mainly plays the role of insulation and positioning support. The battery box control board 13144 is selected The Yingjixin IP5356 series chip has complete lithium battery charging and discharging management functions and provides multi-protocol support. Through a TYPEC port, it can be used as an emergency power bank to provide fast charging of up to 22.5W for most devices that support protocol charging, such as mobile phones, PADs and other mobile devices, in line with the trend of multifunctional outdoor products. Due to space limitations, the battery box control board 13144 uses two circular circuit boards. The two circuit boards are connected by a 1.5 mm diameter control board connecting copper column (13145). The connecting copper column provides support and signal transmission. During specific implementation, technicians can optimize and customize the circuit function according to their own needs. A high-current magnetic connector with a diameter of 8 mm is set on the top of the battery box. The positive pole of the magnetic connection line has a diameter of 1.5 mm and supports a current of up to 10A, which makes this cylindrical battery box have a strong expansion prospect and can be used as an independent power supply for other compact devices.

[0083] As attached Figure 11 , Attachment Figure 12 , Attachment Figure 13 As shown: This is a schematic diagram of the circuit principle of the cylindrical battery box control board 13144. This circuit diagram uses the circuit officially recommended by Yingjixin. The main innovation of this invention is that through careful layout and component selection, the circuit diagram is laid out on two circular circuit boards, realizing the circuit principle diagram function. In the specific implementation process, technicians can choose different circuits to implement according to their needs. Figure 12 and attached Figure 13 This is a schematic diagram of the PCB layout of the battery box control board 13144.

[0084] The above is a description of a foldable portable wood stove provided by the present invention, and does not limit the patent scope of the present invention. For those skilled in the art, according to the ideas of the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention, and these changes or replacements should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A foldable portable wood stove, characterized in that: The furnace body (2) comprises a base (1), a furnace body (2), and a furnace head (3); the furnace body (2) is mounted on the upper part of the base (1) by screws, and the furnace head (3) is mounted on the upper part of the furnace body (2) by screws.

2. A foldable portable wood stove according to claim 1, characterized in that: The base (1) is arranged at the lower part of the wood-fired stove, and the base (1) includes a base base (11), a control box (12), a control box liner (13), a control panel (14), a furnace bottom bracket bearing base (15), a furnace bottom bracket (16), and a furnace bottom bracket bearing (17), wherein the base base (11) is screwed upwardly to the furnace body (2), the upper part of the control box (12) is screwed to the base base (11), the control box liner (13) is installed inside the control box (12), the control panel (14) is located on one side of the control box (12), the furnace bottom bracket bearing base (15) is screwed to the base base (11), and the furnace bottom bracket (16) is fixed to the furnace bottom bracket bearing base (15) through the furnace bottom bracket bearing (17).

3. The foldable portable wood stove according to claim 1, characterized in that: The furnace body (2) is arranged on the upper part of the base (1), and the furnace body (2) comprises an inner liner (21), a sealing layer (22), a protective layer (23), an inner liner bracket (24), an air guide pipe (25), a first fixing screw (26), a second fixing screw (27), a hand-twisted quick-release screw (28), and a quick buckle (29); The inner liner (21), the sealing layer (22), and the protective layer (23) all include an upper, middle, and lower portion (respectively, the lower portion of the inner liner (211), the middle portion of the inner liner (212), the upper portion of the inner liner (213), the lower portion of the sealing layer (221), the middle portion of the sealing layer (222), the upper portion of the sealing layer (223), the lower portion of the protective layer (231), the middle portion of the protective layer (232), and the upper portion of the protective layer (233)). The upper, middle, and lower portions of the inner liner (21) and the sealing layer (22) are all large and small opening structures and are sequentially inserted from bottom to top. The upper end of the upper part (233) of the protective layer and the burner head (3) are connected by a second fixing screw (27), the lower end of the lower part (231) of the protective layer and the base (11) are screwed by a first fixing screw (26), the outer curling edge of the upper end of the middle part (232) of the protective layer and the inner curling edge of the lower end of the upper part (233) of the protective layer form the quick buckle (29) snap connection, and the lower end of the middle part (232) of the protective layer and the upper end of the lower part (231) of the protective layer are screwed by a hand-tightened quick-release screw (28); The protective layer (23) is porous, and the outer wall of the inner liner is provided with a first air inlet (214) distributed in an annular manner at the bottom end of the lower portion (211) of the inner liner, a second air inlet (215) distributed vertically on the outer wall of the lower portion (211) and the middle portion (212) of the inner liner and inclined at a certain angle to the outer wall, and a third air inlet (216) distributed in an annular manner at the upper portion (213) of the inner liner. The lower portion of the inner pot (2) is placed on two inner pot brackets (24) that are interlocked and connected together, and the inner pot bracket (24) is placed on the bottom of the lower portion (221) of the sealing layer. The lower portion (221) of the sealing layer is connected to the base (11) by screws. The upper end of the upper portion (223) of the sealing layer is press-fitted and sealed to the bottom of the burner (3). The upper port (217) of the inner pot and the burner (3) are connected by interference fit.

4. The foldable portable wood stove according to claim 1, characterized in that: The burner (3) is arranged on the upper part of the wood-fired stove. The burner (3) comprises a burner base (31), a burner bracket bearing base (32), a vertical bracket bearing (33), a vertical bracket (34), a horizontal bracket (35), and a horizontal bracket bearing (36). The burner base (31) is provided with a trumpet-shaped structure with a small opening (312) at the lower end of the burner and a large opening (311) at the upper end of the burner. The small opening (312) at the lower end is connected to the small opening at the upper end of the inner tank (213) by interference fitting. The burner bracket bearing base (32) is installed on the inclined surface of the upper large opening (311), the vertical bracket (34) is fixed to the burner bracket bearing base (32) by the vertical bracket bearing (33) and can rotate around the vertical bracket bearing (33), the horizontal bracket (35) is connected to the vertical bracket (34) through the horizontal bracket bearing (36), and the lower part of the upper large opening (311) of the burner base (31) is also pressed and sealed against the upper part (233) of the sealing layer.

5. The foldable portable wood stove according to claim 1, characterized in that: The wood stove has an unfolded state and a folded state; Wherein, in the unfolded state, the furnace bottom bracket (16) is in a pulled-out unfolded state, the inner liner (21) and the sealing layer (22) of the furnace body (2) are interference-connected from bottom to top, with the large opening at the lower end and the small opening at the upper end, the lower part (231) of the protective layer and the base (11) are connected by a first fixing screw (26), the upper part (233) of the protective layer and the burner base (31) of the burner (3) are connected by a second fixing screw (27), the upper end of the middle part (232) of the protective layer and the upper part (233) of the protective layer are connected by a quick buckle (29) formed by an inner fold and an outer fold, the lower end of the middle part (232) of the protective layer and the upper end of the lower part (231) of the protective layer are connected by a hand-twisted quick-release screw (28), and the burner vertical bracket (33) is in an unfolded state perpendicular to the outer plane of the burner base or perpendicular to the burner inclined surface (311); Wherein, in the folded state, the furnace bottom bracket (16) slides and is received in the gap between the sealing layer (22) and the protective layer (23) in the furnace body (2) through the furnace bottom bracket receiving hole (117), and the furnace body (2) is disassembled by opening the hand-twisted quick-release screw (28). The liner (21) and the upper and middle parts of the sealing layer (22) are turned upside down and inserted into the lower part of the liner (211) and the lower part of the sealing layer (221). The lower part (231) and the middle part (232) of the protective layer are inserted into the upper part (233) of the protective layer for reception. The lower part (232) of the protective layer and the furnace head (3) are connected by the hand-twisted quick-release screw (28). The vertical bracket (34) rotates and drives the horizontal bracket (35) to rotate and be received inside the upper part (213) of the liner.

6. The foldable portable wood stove according to claim 1, characterized in that: The base (11) is also provided with a first vent (116) and a protective layer mounting leg (111). The protective layer mounting leg (111) is bent upward and provided with a fixing hole and the lower end of the protective layer lower portion (231) is screwed together by a first fixing screw (26). The furnace bottom bracket bearing base (15) is bent in a U-shape, and the intermediate gap of the bend is directly opposite to the furnace bottom bracket receiving hole (117). The furnace bottom bracket bearing base (15) is screwed together by two furnace bottom bracket bearing base first fixing holes (151) and the furnace bottom bracket bearing base second fixing hole (113) located on the base. The furnace bottom bracket (1 6), a furnace bottom bracket guide rail slot (161) and a furnace bottom bracket fixing hole (162) are provided on the furnace bottom bracket guide rail slot (161), the furnace bottom bracket guide rail slot (161) is installed on the furnace bottom bracket bearing (17) and can slide along the furnace bottom bracket guide rail slot (161), and is received into the gap between the lower part (221) of the closed layer and the lower part (231) of the protective layer of the furnace body (2) through the furnace bottom bracket receiving hole (117), the furnace bottom bracket fixing hole (162) is used to fix the furnace bottom bracket (16) to the ground, the upper end of the first vent (116) is connected to the lower part (221) of the closed layer, and the lower end is connected to the control box liner (13).

7. The foldable portable wood stove according to claim 2, characterized in that: The control box liner (13) includes a circuit structure (131) and an air duct structure (132); The circuit structure (131) comprises a battery compartment (1311), a control mainboard (1312), a magnetic connector (1313), a control panel (14), and a cylindrical battery box (1314). The cylindrical battery box (1314) is placed in the battery compartment (1311). The cylindrical battery box (1314) is connected to the magnetic connector (1313) at the top of the battery compartment (1311) and the control mainboard (1312) to provide power to the control mainboard (1312). The control panel (14) is located on one side of the circuit structure and comprises a TYPEC charge and discharge port (141), a blower speed control switch potentiometer (142), a battery circuit, and a charge and discharge status indication digital tube (143). The air duct structure (132) comprises a blower air inlet (1321), an inner liner air outlet (1322), and a blower (1323); the air outlet of the blower (1323) is plugged into the blower air inlet (1321); the inner liner air outlet (1322) is connected to the first ventilation hole (116) and then connected to the lower part (221) of the closed layer; the air duct structure (132), the inner liner bracket (24), the inner liner (21), the intermediate space of the closed layer (22), the first air inlet (214), the second air inlet (215), and the third air inlet (216) form an air preheating and air distribution channel.

8. The foldable portable wood stove according to claim 4, characterized in that: The vertical support (34) can rotate around the vertical support bearing (33), and the horizontal support (35) can rotate around the horizontal support bearing (36) and slide along the vertical support notch (341); Wherein, the vertical bracket (34) and the horizontal bracket (35) have an unfolded state and a folded state; In the unfolded state, the vertical bracket (34) has two installation states. The vertical bracket (34) can be perpendicular to the horizontal portion of the outer periphery of the burner base (31). At this time, the horizontal bracket (35) slides to the top of the notch (341) on the vertical bracket (34). The horizontal bracket (35) is provided with serrations (352) for placing cookware. The vertical bracket (34) can also be arranged perpendicular to the inclined portion of the burner base (31). At this time, the top of the vertical bracket (34) is in a horizontal state and is provided with serrations for placing cookware. At this time, the horizontal bracket (35) slides to the bottom of the notch (341) on the vertical bracket (34). The other end of the horizontal bracket is provided with a cylindrical buckle (353) which is inserted into the circular positioning hole (315) provided on the horizontal portion of the outer periphery of the burner base (31) for snap connection. In the folded state, the vertical bracket (34) rotates to the inside of the burner base (31) and drives the horizontal bracket (35) to rotate and be stored inside the upper part (213) of the inner container.

9. The cylindrical battery box (1314) according to claim 7, comprising a battery box shell (13141), a battery box liner (13142), batteries (13143), a battery box control board (13144), a control board connecting copper column (13145), a TYPEC charging and discharging port (13146), a magnetic connector (13147), and a battery box hook (13148); in, The battery box housing (13141) includes a twistable battery box cover (131411), a battery box main compartment (131412), and a battery compartment (131413), wherein the battery box cover (131411) and the battery box main compartment (131412) are threadedly connected; The battery box liner (13142) is placed in the battery box main compartment (131412), and the battery (13143) is placed in the battery compartment (131413) on one side of the battery box liner (13142). The battery is a single cylindrical lithium battery. The battery box control board (13144) is composed of two circular circuit boards, which are connected and supported by the control board connecting copper column (13145) in the middle. The battery box control board (13144) is provided with the TPPEC charging and discharging port (13146), and the TYPEC charging and discharging The electrical port (13146) is located at the other end of the battery box (1314). The battery control board (13144) is also provided with a magnetic connector (13147). The magnetic connector (13147) includes positive and negative terminals that are connected to the positive and negative terminals of the battery (13143) after passing through the lithium battery protection chip of the battery box control board (13144). The battery box control board (13144) uses the Ingenic IP5356 series chip that supports lithium battery charging and discharging functions and supports fast charging protocols such as PD3.0 as the main control chip.

10. The liner support (24) according to claim 3, characterized in that The inner liner bracket further comprises an inner liner upper bracket (241) and an inner liner lower bracket (242), wherein the inner liner bracket is further provided with an inner liner bracket first leg (243), an inner liner bracket second leg (244), an inner liner bracket inner liner positioning arc (245), an inner liner bracket clamping notch (246), and an inner liner bracket sealing layer clamping terminal (247). The inner liner upper bracket (241) and the inner liner lower bracket (242) are clamped together through the notches (246) located in the middle of the inner liner upper and lower brackets in opposite directions. One leg (243) is slightly shorter than the second leg (244) of the inner liner support, the curvature of the inner liner positioning arc (245) of the inner liner support is consistent with the curvature of the bottom of the inner liner lower part (211), the diameter of the inner liner support sealing layer clamping terminal (247) is consistent with the inner diameter of the sealing layer lower part (221), and the inner liner support (24) is arranged between the inner liner lower part (211) and the sealing layer lower part (221), forming a cavity between the inner liner (21) and the lower part of the sealing layer (22).

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