A multifunctional double-tank gasifier

Abstract

This utility model relates to the field of stove equipment technology, specifically a multifunctional dual-chamber gasifier, including a base, a rectangular furnace body, a firewood liner, a coal liner, and an air intake mechanism. The air intake mechanism includes a furnace door opening on the furnace body corresponding to the firewood liner and a furnace door hinged to the furnace body. The furnace door opening communicates with a first chamber, and each of the four inner walls of the furnace door opening is provided with an air distribution plate with air holes. An air intake hole located at the bottom of the furnace door is provided on the furnace body, and both the air intake hole and the air holes on the air distribution plate communicate with the first chamber. This utility model adopts a dual-chamber structure with a fixed firewood liner and a detachable coal liner. The firewood liner is fixed to the first chamber, and the coal liner is detachably connected inside the firewood liner. The air intake mechanism is independently set in the furnace body and does not need to be disassembled and adjusted with the furnace core. When burning firewood, fuel can be directly added to the firewood liner; when burning coal, only the coal liner needs to be added, without modifying the air intake structure, simplifying the fuel switching process and reducing the user's operational burden.

Description

Technical Field

[0001] This utility model relates to the field of stove equipment technology, specifically a multi-functional double-tank gasifier. Background Technology

[0002] In rural areas of Northwest China, gasification stoves typically use firewood and coal as primary fuels for winter heating, thus requiring them to be capable of operating both. For example, the "movable core firewood / coal dual-fuel stove" proposed in Chinese patent CN202709182U achieves fuel switching by installing a coal core within a firewood core, but it still has the following shortcomings:

[0003] 1. The air intake mechanism relies on the disassembly and reassembly of the burner core, making operation cumbersome. When burning firewood, the coal burner core needs to be removed, and when burning coal, it needs to be installed. The air intake path is passively changed with the disassembly and reassembly of the burner core, which means that the air intake-related structures need to be adjusted synchronously when switching fuels, increasing the user's operational burden.

[0004] 2. Insufficient targeted oxygen supply. Its air intake holes are concentrated in the movable fan and the lower half of the coal furnace core, failing to form a multi-zone, staged oxygen supply structure. This makes it difficult to adapt to the different needs of wood, which requires sufficient oxygen supply in the upper half, and coal, which requires continuous oxygen supply in the middle and lower parts, easily leading to incomplete combustion problems.

[0005] 3. Poor coordination between air intake and heat circulation. Air intake is only used as an independent combustion aid and is not linked with furnace insulation and flue gas guidance. Combustion heat is easily lost with the flue gas, reducing heating efficiency.

[0006] Therefore, there is an urgent need for a multifunctional dual-tank gasifier to enable flexible switching between firewood and coal and efficient combustion, in order to meet the winter heating needs of rural areas. Utility Model Content

[0007] The purpose of this invention is to provide a multifunctional dual-tank gasifier to solve the problems mentioned in the background section.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional dual-chamber gasifier, comprising a base, a rectangular furnace body, a diesel liner, a coal liner, and an air intake mechanism. The furnace body is mounted on the base via a bottom plate. The internal chamber of the furnace body is divided into a first chamber and a second chamber by a partition plate. The diesel liner is fixedly mounted on the bottom plate and located within the first chamber. The coal liner is detachably mounted on the bottom plate and located within the diesel liner. The air intake mechanism includes a furnace door opening on the furnace body corresponding to the diesel liner and a furnace door hinged to the furnace body. The furnace door opening communicates with the first chamber, and air distribution plates are provided on the four inner walls of the furnace door opening. Air holes are provided on the air distribution plates. An air intake hole is provided on the furnace body at the bottom of the furnace door. The air intake hole and the air holes on the air distribution plates are all connected to the first chamber.

[0009] Furthermore, the firewood liner is provided with combustion-aiding holes, and both the firewood liner and the coal liner are provided with feed inlets facing the furnace door.

[0010] Furthermore, an oven is provided in the second chamber, and an oven opening corresponding to the oven is provided on the oven body. An oven door that matches the oven opening is hinged to the oven body.

[0011] Furthermore, the upper part of the furnace body is provided with a furnace surface, the furnace surface is provided with a furnace opening and a flue opening, and a heat insulation interlayer is provided between the furnace surface and the furnace body, the heat insulation interlayer being adapted to the furnace surface.

[0012] Furthermore, a smoke and wind baffle is hinged to the upper part of the second chamber. The smoke and wind baffle is located below the insulation layer. A pull rod is hinged to the smoke and wind baffle. One end of the pull rod passes through the furnace body and extends to the outside of the furnace body.

[0013] Furthermore, the furnace door is equipped with a silicon crystal glass observation window.

[0014] This utility model addresses the problems of cumbersome operation, insufficient targeted oxygen supply, and low thermal circulation efficiency of existing dual-fuel gasifiers. Through structural optimization and functional integration, it achieves the following beneficial effects:

[0015] 1. This utility model adopts a double-chamber structure with a fixed firewood chamber and a detachable coal chamber. The firewood chamber is fixed in the first chamber, while the coal chamber is flexibly installed and removed using clips or bolts. The air intake mechanism is independently set in the furnace body and does not need to be adjusted with the furnace core. When burning firewood, fuel can be directly added to the firewood chamber; when burning coal, only the coal chamber needs to be installed without modifying the air intake structure, simplifying the fuel switching process and reducing the user's operational burden.

[0016] 2. This utility model adopts a layered and zoned air intake design. When burning firewood, the air distribution plates on the four walls of the furnace door opening introduce air through the air holes, which, together with the combustion-aiding holes on the periphery of the firewood chamber, form a multi-zone secondary oxygen supply. The oxygen directly reaches the core area of ​​wood combustion, promoting full gasification. When burning coal, a gap is reserved between the coal chamber and the firewood chamber. Air passes through the air distribution plate, the gap between the firewood chamber and the vent holes of the coal chamber, which simultaneously meets the continuous oxygen supply needs of the lower part of the coal, effectively reducing black smoke emissions and improving fuel combustion efficiency.

[0017] 3. The fuel combustion heat of this invention directly heats the furnace surface through thermal radiation, meeting the heating needs of cooking utensils; the insulation layer between the furnace surface and the furnace body prevents heat from diffusing to the outside of the furnace body, extending the heat preservation time of the furnace surface; the adjustable smoke and wind baffle controls the flue gas path, guiding some heat into the oven in the second chamber to achieve the waste heat baking function. The air intake and oxygen supply are linked with the heat circulation, reducing heat waste and improving heating and overall thermal efficiency.

[0018] 4. The furnace door of this utility model is equipped with a silicon crystal glass observation window, which can be used to observe the combustion status inside the furnace in real time (flame size, fuel remaining, etc.) for easy and precise control; the oven in the second chamber uses the residual heat of combustion to bake food (such as sweet potatoes, steamed buns, etc.) without additional energy consumption, enriching the practical functions of the stove and making it more suitable for the heating and living needs of rural areas in winter.

[0019] In summary, this utility model achieves flexible switching between firewood and coal fuels, precise oxygen supply, and efficient heat circulation through structural innovation. It also features convenient operation, complete combustion, and diverse functions, and can better meet the winter heating and comprehensive use needs of rural areas in Northwest China. Attached Figure Description

[0020] Figure 1 This is a front view of the present utility model;

[0021] Figure 2 This is a structural diagram of the present invention;

[0022] Figure 3 This is a partial structural diagram of the present utility model;

[0023] Figure 4 This is a diagram of the internal structure of this utility model;

[0024] Figure 5 This is a structural diagram of the fuel tank of this utility model;

[0025] Figure 6 This is a structural diagram of the coal bladder of this utility model.

[0026] In the picture:

[0027] 1. Base; 2. Furnace body; 3. Firewood liner; 4. Coal liner; 5. Divider plate; 6. First chamber; 7. Second chamber; 8. Furnace door opening; 9. Furnace door; 10. Air distribution plate; 11. Air inlet; 12. Combustion aid hole; 13. Feed inlet; 14. Oven; 15. Oven opening; 16. Oven door; 17. Furnace surface; 18. Insulation layer; 19. Smoke and wind baffle plate; 20. Pull rod; 21. Fire observation window; 22. Base plate. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-6 This invention provides a detailed description of the specific implementation methods of this utility model, including its specific technical features. This utility model aims to solve the problems of cumbersome operation of the air intake mechanism in existing dual-fuel (firewood and coal) stoves, insufficient targeted oxygen supply, and poor heat circulation coordination. It also integrates optimized designs such as multi-hole secondary air intake and triple heat circulation to meet the winter heating and comprehensive usage needs of rural areas in Northwest China.

[0029] This multi-functional dual-tank gasifier includes a base 1, a furnace body 2, a diesel tank 3, a coal tank 4, an air intake mechanism, and auxiliary functional components, as detailed below:

[0030] The base 1 provides stable support for the overall structure and is made of thickened steel plate welded together, making it suitable for complex rural ground environments. The furnace body 2 is made of high-temperature resistant alloy material, and its interior is divided into a first chamber 6 (main combustion chamber) and a second chamber 7 (waste heat utilization chamber) by a partition plate 5. The outer side of the furnace body is treated with an anti-rust and high-temperature resistant coating. The firewood chamber 3 (firewood combustion chamber) is welded and fixed inside the first chamber 6. It is made of 5mm thick heat-resistant cast iron, and 24 combustion-supporting holes 12 with a diameter of 8mm are evenly distributed on its peripheral wall to achieve secondary oxygen supply in multiple areas. The coal chamber 4 (coal combustion chamber) is detachably connected to the firewood chamber 3. Specifically, an annular raised chamber ring located inside the firewood chamber 3 is welded to the bottom plate 22, and slots located on both sides of the raised chamber ring and connected to the bottom plate 22 are symmetrically welded to the bottom plate 22 and filled with refractory clay. A hollow locking block that matches the slot is welded to the bottom of the firewood chamber 3. When placing it, the locking block is placed in the slot. The coal chamber 4 is adapted to the internal dimensions of the firewood chamber 3, and ventilation holes that are staggered with the combustion-supporting holes 12 are opened on its peripheral wall to ensure a uniform oxygen supply during coal combustion.

[0031] The air intake mechanism includes a furnace door opening 8, a furnace door 9, an air distribution plate 10, and air intake holes 11. The furnace door opening 8 is located on the front of the furnace body 2, corresponding to the diesel fuel 3. Stainless steel air distribution plates 10 are welded to its four inner walls, and each air distribution plate has 20 air holes with a diameter of 5 mm. The furnace door 9 is hinged to one side of the furnace door opening 8 and is sealed to the furnace body when closed. Three parallel elongated air intake holes 11 are provided on the furnace body 2 at the bottom of the furnace door. The air intake holes 11 and the air holes on the air distribution plate 10 are all connected to the first chamber 6. Through this air intake structure, external air enters the first chamber 6 through the air intake hole 11 and directly acts on the fuel layer at the bottom of the diesel chamber 3 or coal chamber 4. Simultaneously, it passes through the air holes on the air distribution plate 10, providing basic oxygen for initial combustion. When oxygen supply is insufficient, the furnace door 9 is opened, and unburned combustible gases (such as carbon monoxide and methane) rise with the hot airflow to the upper part of the diesel chamber 3. At this time, the combustion-supporting holes 12 on the peripheral wall of the diesel chamber 3 and the airflow entering the air distribution plate 10 form a coordinated secondary air intake, supplementing oxygen to the high-temperature combustion zone and achieving secondary combustion of the gas. This secondary air intake not only fully converts unburned combustible gases into heat energy, reducing energy waste, but also effectively reduces the carbon monoxide and particulate matter content in the flue gas, achieving no significant black smoke emissions from the chimney and improving the environmental friendliness and thermal efficiency of combustion.

[0032] The upper part of the furnace body 2 is equipped with a furnace surface 17 (3mm thick heat-resistant cast iron plate). The furnace surface has a 27.5cm diameter opening (for placing cooking utensils) and an 11.5cm diameter flue opening (for connecting the flue pipe). An insulation layer 18 (6mm thick aluminum silicate needled blanket, temperature resistance ≥1260℃) is installed between the furnace surface and the furnace body. It is fixed with a high-temperature adhesive and the edges are sealed with high-temperature resistant sealant to reduce heat diffusion to the outside of the furnace body. An oven 14 is fixedly welded into the second chamber 7. It has a removable stainless steel mesh tray (load-bearing capacity ≤5kg) and the tray is 10cm away from the bottom of the oven. The furnace body 2 has an oven opening 15 corresponding to the oven position and an oven door 16 is hinged. A bimetallic thermometer (measuring range 50-200℃) is embedded in the inside of the oven door 16. A temperature reference table (marking the oven temperature range when burning different fuels) is affixed to the outer wall of the furnace body. The upper part of the second chamber 7 is hinged to a smoke and wind baffle plate 19 (3mm thick steel plate), located below the insulation layer 18. A pull rod 20 is hinged to the smoke and wind baffle plate 19, with one end of the pull rod extending through the furnace body 2 to the outside (a slot needs to be opened on the furnace body 2 for the pull rod to move). Its adjustment angle range is 0° (horizontal, blocking the flue gas in the second chamber) to 60° (maximum tilt angle, guiding the flue gas to the oven). The hinge method is a damping hinge so that the angle can be locked after adjustment to avoid vibration and displacement. A silicon crystal glass observation window 21 is embedded in the furnace door 9, which uses double-layer 5mm thick silicon crystal glass (resistant to 900℃ high temperature). The glass is sealed to the furnace door frame with a high-temperature resistant ceramic fiber sealing ring (temperature resistance ≥1000℃). The frame is tightened with bolts to ensure no flue gas leakage during combustion and reduce heat loss, facilitating real-time observation of the combustion status inside the furnace.

[0033] When using wood as fuel, this device can be operated directly without disassembling any parts, as follows:

[0034] Open the furnace door 9 and add wood (length adapted to the size of the feed inlet 13) into the firewood chamber 3. The height of the wood stack should not exceed 2 / 3 of the height of the firewood chamber to ensure sufficient combustion space. Then close the furnace door 9, and external air enters the furnace body 2 through the air inlet 11 at the bottom of the furnace door. After the wood is lit, the initial combustion stage relies on the primary air supplied by the air distribution plate 10 for combustion assistance. As combustion progresses, the furnace door 9 can be opened, and then the air is evenly introduced into the firewood chamber 3 and the multiple combustion assistance holes 12 on the periphery of the firewood chamber 3 through the air holes of the air distribution plate 10 on the inner wall of the furnace door opening 8 to form a secondary oxygen supply. The oxygen reaches the core area of ​​wood combustion, promotes the full gasification of wood, and reduces the production of black smoke. The high-temperature flue gas generated by combustion is discharged through the flue outlet of the furnace surface 17. Due to the sufficient secondary oxygen supply, there is no obvious black smoke in the chimney emissions.

[0035] When switching this device to coal fuel, only the coal bladder installation step needs to be added; no adjustment to the air intake mechanism is required.

[0036] Place the coal bladder 4 smoothly into the firewood bladder 3, leaving a certain gap between the bottom of the coal bladder 4 and the bottom of the firewood bladder 3 to ensure airflow; add coal (lump coal or honeycomb briquettes are acceptable) into the coal bladder 4, with the coal height not exceeding 3 / 4 of the coal bladder height; close the furnace door 9, and the air intake path is consistent with the firewood burning mode; some air enters the coal interior through the ventilation holes on the periphery of the coal bladder 4, and some oxygen is supplied from the outside of the coal bladder 4 through the combustion-supporting holes 12 on the firewood bladder 3; during coal combustion, the air gap between the two bladders works in conjunction with the combustion-supporting holes 12 to meet the continuous oxygen supply needs of the lower part of the coal.

[0037] The heat generated by combustion is efficiently utilized through a triple cycle:

[0038] In the first cycle, the heat generated by the combustion of fuel in the inner chamber 3 is directly transferred to the stove surface 17 through thermal radiation to heat the cookware. In the second cycle, the heat that is not directly utilized is blocked by the heat insulation layer 18 between the stove surface 17 and the stove body 2, reducing the heat diffusion to the outside of the stove body and extending the heat preservation time of the stove surface. In the third cycle, some of the heat is conducted to the second chamber 7 through the inner wall of the stove body 2. At the same time, by adjusting the angle of the smoke baffle 19 (pulling the external lever 20), the residence time of the flue gas in the second chamber 7 is controlled, and the heat is absorbed by the oven 14 to achieve the residual heat baking function.

[0039] Users can observe the combustion status inside the furnace (flame size, remaining fuel, etc.) in real time through the silicon crystal glass observation window 21 on the furnace door 9. The angle of the smoke and wind baffle 19 can be adjusted by the pull rod 20; when the oven 14 needs to be heated, the smoke and wind baffle 19 is adjusted to a 45° angle to guide some of the flue gas to flow over the oven, increasing heat transfer; when the oven does not need to be heated, the smoke and wind baffle 19 is adjusted to a horizontal position to block the flow of flue gas to the second chamber 7, and the heat is concentrated on the furnace surface 17, reducing heat waste.

[0040] The oven 14 in the second chamber 7 can use the residual heat of combustion to bake food; open the oven door 16 and put the food to be baked (such as sweet potatoes, steamed buns, etc.) into the tray inside the oven; close the oven door 16 and increase the heat supply to the second chamber by adjusting the smoke and wind baffle 19. The temperature inside the oven can be maintained at 80-150℃, realizing a baking function without additional energy consumption.

[0041] This utility model achieves flexible fuel switching through a detachable dual-tank structure of diesel tank 3 and coal tank 4. Combined with a multi-hole secondary air intake and three-stage heat circulation design, it improves combustion efficiency and heat utilization. The addition of a fire observation window optimizes the user experience and solves the problems of single fuel compatibility and limited functions of traditional gasifiers. It has the advantages of strong fuel compatibility, convenient use, and high combustion efficiency.

Claims

1. A multifunctional dual-chamber gasifier, comprising a base (1), a rectangular furnace body (2), a diesel liner (3), a coal liner (4), and an air intake mechanism, wherein the furnace body (2) is mounted on the base (1) via a bottom plate (22), and the internal chamber of the furnace body (2) is divided into a first chamber (6) and a second chamber (7) by a partition plate (5), wherein the diesel liner (3) is fixedly mounted on the bottom plate (22) and located within the first chamber (6), and the coal liner (4) is detachably mounted on the bottom plate (22) and located within the diesel liner (3), characterized in that, The air intake mechanism includes a furnace door opening (8) on the furnace body (2) and corresponding to the fuel tank (3) and a furnace door (9) hinged to the furnace body (2); the furnace door opening (8) is connected to the first chamber (6) and an air distribution plate (10) is provided on the four inner walls of the furnace door opening (8); the air distribution plate (10) is provided with air holes; the furnace body (2) is provided with an air intake hole (11) located at the bottom of the furnace door (9); the air intake hole (11) and the air holes on the air distribution plate (10) are both connected to the first chamber (6).

2. The gasifier as described in claim 1, characterized in that, The firewood liner (3) is provided with a combustion-aiding hole (12), and both the firewood liner (3) and the coal liner (4) are provided with a feed inlet (13) facing the furnace door (9).

3. The gasifier as described in claim 1, characterized in that, An oven (14) is provided in the second chamber (7). An oven opening (15) corresponding to the oven (14) is provided on the oven body (2). An oven door (16) that matches the oven opening (15) is hinged on the oven body (2).

4. The gasifier as described in claim 3, characterized in that, The upper part of the furnace body (2) is provided with a furnace surface (17), and the furnace surface (17) is provided with a furnace opening and a flue opening. An insulation interlayer (18) is provided between the furnace surface (17) and the furnace body (2), and the insulation interlayer (18) is adapted to the furnace surface (17).

5. The gasifier as described in claim 4, characterized in that, The second chamber (7) is hinged with a smoke and wind baffle plate (19) at the top. The smoke and wind baffle plate (19) is located below the insulation interlayer (18). A pull rod (20) is hinged on the smoke and wind baffle plate (19). One end of the pull rod (20) passes through the furnace body (2) and extends to the outside of the furnace body (2).

6. The gasifier as described in claim 1, characterized in that, The furnace door (9) is equipped with a silicon crystal glass observation window (21).

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