Gasification and positive and negative combustion integrated firewood stove

Abstract

The gasification forward and reverse combustion integrated firewood stove comprises a stove body, a left cavity and a right cavity are formed in the stove body, the left cavity is divided into a stove head cavity, a hearth cavity and a stove bottom cavity from top to bottom, a firewood adding opening is formed in a hearth, a stove door is arranged on the firewood adding opening, and a first transparent fire observation window is arranged on the stove door; a positive combustion smoke pipe communicated with the furnace end cavity is arranged on the side surface of the furnace end cavity, and is communicated with a chimney through a switching valve; the right cavity is divided into an oven cavity and a reverse combustion chamber from top to bottom, the reverse combustion chamber is divided into a left side combustion chamber and a right side heat dissipation chamber, and an oven door is arranged on the oven cavity; and a second transparent fire observation window is arranged on the furnace body in a position corresponding to the left combustion chamber. The system is compatible with a positive combustion mode and a negative combustion mode, is simple to operate, is efficient and clean, and is free of smoke in a room; the oven can be used as an oven and a warm air box, power is not needed, and warm air can flow naturally; and multiple fire observation is achieved, and the attractiveness is improved.

Description

Technical Field

[0001] This utility model relates to the field of wood-fired stoves, specifically a gasification and reversible combustion integrated wood-fired stove. Background Technology

[0002] Common wood-burning stoves on the market include upright-burning stoves and reverse-burning stoves. Upright-burning stoves have the flame above the firewood, making them suitable for boiling water or cooking over a high flame. They have strong heat and high flame temperature, but because most of the heat is directly discharged through the flue, heat is wasted. Reverse-burning stoves allow the flame to burn and linger inside the stove, retaining as much heat as possible within the stove and dissipating it into the room for heating, thus improving heat utilization.

[0003] In real-life scenarios in rural areas of northern China, there is a need for both direct heating for boiling water and cooking, as well as indirect heating for warmth, and also for baking food and using clean heating air. How to combine direct and indirect heating into one system to achieve multi-scenario application has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to propose a wood-burning stove that combines forward and reverse burning into one unit, enabling applications in multiple scenarios.

[0005] The purpose of this utility model is achieved as follows: a gasification and reversible combustion integrated wood-fired stove, comprising:

[0006] Furnace body,

[0007] The furnace body has a left chamber and a right chamber inside.

[0008] The left chamber is divided into the furnace head chamber, furnace chamber, and furnace bottom chamber from top to bottom.

[0009] The furnace chamber contains a furnace chamber.

[0010] A grate is installed between the furnace chamber and the furnace bottom chamber.

[0011] A cleaning plate is provided in the furnace bottom cavity below the grate, and ash leakage holes are provided on the cleaning plate. An ash hopper is provided below the cleaning plate.

[0012] A fire-adding opening is provided on the furnace chamber above the grate, and a furnace door is provided on the fire-adding opening. The furnace door is provided with a first transparent observation window.

[0013] The furnace wall is equipped with furnace air inlet holes;

[0014] The top of the furnace chamber is equipped with a flame port that communicates with the bottom of the furnace head chamber;

[0015] A stove platform is located at the top of the burner cavity;

[0016] The side of the furnace head cavity is provided with a positive combustion flue pipe that is connected to the furnace head cavity. The positive combustion flue pipe is connected to the chimney through a switching valve.

[0017] A baffle plate is installed between the flame outlet and the flue pipe.

[0018] An air inlet chamber is provided on the left side of the furnace bottom cavity inside the furnace body, and a first air inlet pipe is provided on the furnace body that communicates with the inside of the air inlet chamber.

[0019] A second air inlet pipe, which communicates with the air inlet chamber, is installed inside the furnace cavity outside the furnace.

[0020] A first set of vent holes is provided between the air inlet chamber and the furnace bottom chamber;

[0021] The right chamber is divided into the oven cavity and the reverse combustion chamber from top to bottom.

[0022] The reverse combustion chamber is equipped with a middle partition plate, which divides the reverse combustion chamber into a left combustion chamber and a right heat dissipation chamber connected by the upper part. The right heat dissipation chamber is equipped with a reverse flue pipe, which is connected to the chimney through a switching valve.

[0023] A reverse-burning flue is provided on the right side of the furnace bottom cavity. The reverse-burning flue is connected to the left combustion chamber. An ash baffle is provided between the reverse-burning flue and the left combustion chamber.

[0024] A second set of ventilation holes is provided between the furnace cavity outside the furnace and the combustion chamber on the left side;

[0025] A warm air duct is provided in the left combustion chamber. The lower air inlet of the warm air duct is located at the back of the left combustion chamber and is connected to the outside. The upper end of the warm air duct is connected to the oven cavity. A warm air outlet connected to the outside is provided on the side wall of the oven cavity. A cover plate is provided at the warm air outlet.

[0026] Both the forward-firing and reverse-firing smoke pipes pass through the oven cavity;

[0027] The oven cavity is equipped with an oven door;

[0028] When the switching valve is in the first position, the reverse-burning flue is blocked and closed from the chimney, while the forward-burning flue is connected to the chimney for exhaust; when the switching valve is in the second position, the forward-burning flue is blocked and closed from the chimney, while the reverse-burning flue is connected to the chimney for exhaust.

[0029] A second transparent observation window is installed on the furnace body at a position corresponding to the left combustion chamber.

[0030] Furthermore, the cross-section of the forward-burning flue is rectangular, and the cross-section of the reverse-burning flue is rectangular. The switching valve includes a handle, and the left end of the handle is provided with an L-shaped structure composed of a horizontal plate and a vertical plate. When the switching valve is in the first position, the horizontal plate in the L-shaped structure blocks and closes the reverse-burning flue from the chimney, while the forward-burning flue is connected to the chimney for smoke exhaust. When the switching valve is in the second position, the horizontal plate in the L-shaped structure enters the forward-burning flue, and the vertical plate blocks and closes the forward-burning flue from the chimney, while the reverse-burning flue is connected to the chimney for smoke exhaust.

[0031] Furthermore, a transparent observation window is provided on the oven door.

[0032] Furthermore, a stove ring is installed on the stovetop.

[0033] Furthermore, an inspection door is provided on the side wall of the right-side heat dissipation chamber.

[0034] Furthermore, the inspection door is equipped with a transparent observation window.

[0035] Furthermore, an air volume regulating valve is provided on the side wall of the air intake chamber.

[0036] This utility model has the following advantages:

[0037] 1. Solves the incompatibility issue between forward and reverse burning in existing wood-burning stoves on the market;

[0038] 2. Simple to operate, no training required, easy to switch between forward and reverse burning. When burning forward, pull the switching valve to the far right; when burning in reverse, push the switching valve to the far left.

[0039] 3. Highly efficient cleaning, no smoke or dust indoors;

[0040] 4. Equipped with multiple combustion modes to handle various application scenarios:

[0041] a. High-pressure fire mode, easy to start, intense fire, can extinguish fire;

[0042] b. Positive combustion gasification mode, secondary air intake, secondary combustion, saving fuel and providing strong firepower;

[0043] c. Reverse combustion mode, three air intakes and three combustions, saving fuel and high thermal efficiency;

[0044] 5. Multiple uses: It can be used as an oven or a warm air box, requiring no power and allowing warm air to circulate naturally;

[0045] 6. Multiple viewing angles enhance aesthetics; compact structure saves space.

[0046] 7. In reverse heating mode, the fire sinks downwards, which accelerates air convection in the room and makes it easier to warm the room. In addition, the temperature of the top surface of the furnace is not too high in heating mode, so it is not hot to the touch and it is convenient to work on the top surface of the furnace.

[0047] 8. A dust baffle was designed to automatically intercept cigarette ash. Attached Figure Description

[0048] The specific structure of this utility model is given in the following figures and embodiments:

[0049] Figure 1 This is a structural schematic diagram of the furnace body without the front wall of the first embodiment;

[0050] Figure 2 This is a structural schematic diagram from a second perspective of Embodiment 1 with the front wall of the furnace removed;

[0051] Figure 3 This is a schematic diagram of the flue gas flow during combustion in Example 1;

[0052] Figure 4 This is a schematic diagram of the flue gas flow during the reverse combustion process in Example 1;

[0053] Figure 5 This is a schematic diagram showing the flow of flue gas in the flue and chimney during combustion in Example 1;

[0054] Figure 6 This is a schematic diagram showing the flow of flue gas in the flue and chimney during reverse combustion in Example 1;

[0055] Figure 7 This is a schematic diagram of the main structure of the switching valve in Embodiment 1;

[0056] Figure 8 This is a structural schematic diagram from a first stereoscopic perspective of Embodiment 2;

[0057] Figure 9 This is a schematic diagram of the main view structure of Embodiment 2;

[0058] Figure 10 This is a structural schematic diagram from a second stereoscopic perspective of Embodiment 2;

[0059] Figure 11 This is a top view of the structure of Embodiment 2;

[0060] Figure 12 This is a structural schematic diagram of the third perspective of Embodiment 2 with the front wall of the furnace removed.

[0061] Legend: 1. Furnace body, 2. Inspection door, 3. Air volume regulating valve, 4. Furnace head cavity, 5. Furnace chamber, 6. Furnace bottom cavity, 7. Furnace, 8. Grate, 9. Ash cleaning tray, 10. Ash hopper, 11. Furnace feeding port, 12. Furnace door, 13. First transparent observation window, 14. Furnace air inlet, 15. Flame opening, 16. Stove platform, 17. Front-burning flue, 18. Switching valve, 19. Chimney, 20. Fire baffle, 21. Air inlet cavity, 22. First air inlet pipe, 23. Second air inlet. 24. Pipe, first set of vents, 25. Oven cavity, 26. Reverse combustion chamber, 27. Middle partition, 28. Left combustion chamber, 29. Right heat dissipation chamber, 30. Reverse flue pipe, 31. Reverse flue outlet, 32. Ash baffle, 33. Second set of vents, 34. Warm air pipe, 35. Lower air inlet, 36. Cover plate, 37. Oven door, 38. Second transparent observation window, 39. Handle, 40. Horizontal plate, 41. Vertical plate, 42. Warm air outlet, 43. Oven ring. Detailed Implementation

[0062] This utility model is not limited to the following embodiments, and the specific implementation method can be determined according to the technical solution of this utility model and the actual situation.

[0063] Example 1: As Figures 1 to 7 As shown, a gasification and reversible combustion integrated wood-fired stove includes:

[0064] Furnace body 1,

[0065] The furnace body 1 has a left chamber and a right chamber inside.

[0066] The left chamber is divided into three parts from top to bottom: the furnace head chamber (4), the furnace chamber (5), and the furnace bottom chamber (6).

[0067] The furnace chamber 5 contains the furnace chamber 7.

[0068] A grate 8 is provided between the furnace chamber 5 and the furnace bottom chamber 6.

[0069] A cleaning plate 9 is provided in the furnace bottom cavity 6 below the grate 8. The cleaning plate 9 has ash leakage holes, and an ash hopper 10 is provided below the cleaning plate 9.

[0070] A fire-adding opening 11 is provided on the furnace chamber 7 above the grate 8, and a furnace door 12 is provided on the fire-adding opening 11. A first transparent observation window 13 is provided on the furnace door 12.

[0071] The furnace wall is provided with a furnace air inlet 14;

[0072] The top of the furnace chamber 7 is provided with a flame port 15 that communicates with the bottom of the furnace head chamber 4;

[0073] The stove 16 is located at the top of the burner cavity 4;

[0074] The side of the furnace head cavity 4 is provided with a positive combustion flue pipe 17 that is connected to the furnace head cavity 4. The positive combustion flue pipe 17 is connected to the chimney 19 through a switching valve 18.

[0075] A fire baffle 20 is provided between the flame opening 15 and the combustion flue 17;

[0076] An air inlet chamber 21 is provided on the left side of the furnace bottom cavity 6 inside the furnace body 1, and a first air inlet pipe 22 is provided on the furnace body 1 that communicates with the inside of the air inlet chamber 21.

[0077] A second air inlet pipe 23, which communicates with the air inlet chamber 21, is provided inside the furnace cavity 5 outside the furnace 7.

[0078] A first set of ventilation holes 24 is provided between the air inlet chamber 21 and the furnace bottom chamber 6; the first set of ventilation holes is a primary air inlet in the positive firing mode and a secondary air inlet in the reverse firing mode.

[0079] The right chamber is divided into an oven cavity 25 and a reverse combustion chamber 26 from top to bottom.

[0080] The reverse combustion chamber 26 is provided with a middle partition 27, which divides the reverse combustion chamber 26 into a left combustion chamber 28 and a right heat dissipation chamber 29 connected by an upper part. The right heat dissipation chamber 29 is provided with a reverse flue pipe 30, which is connected to the chimney 19 through a switching valve 18.

[0081] A reverse combustion flue 31 is provided on the right side of the furnace bottom cavity 6. The reverse combustion flue 31 is connected to the left combustion chamber 28. An ash baffle 32 is provided between the reverse combustion flue 31 and the left combustion chamber 28.

[0082] A second set of ventilation holes 33 is provided between the furnace chamber 5 outside the furnace 7 and the left combustion chamber 28; the second set of ventilation holes is a three-stage air intake hole in the reverse combustion mode;

[0083] A warm air pipe 34 is provided in the left combustion chamber 28. The lower air inlet 35 of the warm air pipe 34 is located on the back of the left combustion chamber 28 and is connected to the outside. The upper end of the warm air pipe 34 is connected to the oven cavity 25. A warm air outlet 42 connected to the outside is provided on the side wall of the oven cavity 25. A cover plate 36 is provided at the warm air outlet 42.

[0084] Both the forward-firing smoke pipe 17 and the reverse-firing smoke pipe 30 pass through the oven cavity 25;

[0085] The oven cavity 25 is equipped with an oven door 37;

[0086] When the switching valve 18 is in the first position, the reverse-burning flue and the chimney 19 are blocked and closed, while the forward-burning flue and the chimney 19 are connected for exhaust; when the switching valve 18 is in the second position, the forward-burning flue and the chimney 19 are blocked and closed, while the reverse-burning flue and the chimney 19 are connected for exhaust.

[0087] A second transparent observation window 38 is provided on the furnace body 1 at a position corresponding to the left combustion chamber 28.

[0088] Furthermore, the cross-section of the forward-burning flue is rectangular, and the cross-section of the reverse-burning flue is rectangular. The switching valve 18 includes a handle 39. The left end of the handle 39 is provided with an L-shaped structure composed of a horizontal plate 40 and a vertical plate 41. When the switching valve 18 is in the first position, the horizontal plate 40 in the L-shaped structure blocks and closes the reverse-burning flue and the chimney 19, while the forward-burning flue and the chimney 19 are connected for smoke exhaust. When the switching valve 18 is in the second position, the horizontal plate 40 in the L-shaped structure enters the forward-burning flue, and the vertical plate 41 blocks and closes the forward-burning flue and the chimney 19, while the reverse-burning flue and the chimney 19 are connected for smoke exhaust.

[0089] Furthermore, a transparent observation window is provided on the oven door 37. The transparent observation window is not shown in the attached drawings, and its structure is a well-known and commonly used technology.

[0090] Furthermore, a stove ring 43 is provided on the stove platform 16. When the stove is in reverse firing mode, the stove ring 43 covers the stove platform to prevent backflow of smoke.

[0091] Furthermore, an inspection door 2 is provided on the side wall of the right-side heat dissipation chamber 29. The inspection door 2 facilitates dust cleaning and maintenance.

[0092] Furthermore, the inspection door 2 is equipped with a transparent observation window. The transparent observation window is not shown in the attached drawings, and its structure is a well-known and commonly used technology. The transparent observation window is beneficial for observing the degree of soot accumulation, and facilitates timely opening of the inspection door 2 for cleaning and maintenance.

[0093] Example 2, as Figure 8-12 As shown, this embodiment is basically the same as the previous embodiment, except that an air volume regulating valve 3 is provided on the side wall of the air intake chamber 21.

[0094] The working principle of this utility model is as follows:

[0095] When it is burning, if Figure 1 , 2 As shown in Figures 3 and 5, pull the switching valve to the far right. At this time, the switching valve is in the first position. The horizontal plate 40 in the L-shaped structure blocks and closes the reverse-burning flue and the chimney 19, while the forward-burning flue and the chimney 19 are connected for smoke exhaust. Open the fuel inlet 11, put in firewood, ignite the firewood, and close the furnace door. The chimney 19 begins to draw smoke. The air intake chamber 21 draws air from outside the furnace body 1 through the first air intake pipe 22. The air in the air intake chamber 21 enters the furnace bottom chamber 6 through the first set of vent holes 24. The air in the furnace bottom chamber 6 participates in the combustion of the firewood through the grate 8, as shown by arrow b. This is one intake and one combustion. At this time, some combustible gases, such as carbon monoxide, will be produced. The air in the air intake chamber 21 enters the furnace chamber 5 through the second air intake pipe 23, as shown by arrow a. The air in the furnace chamber 5 enters the furnace chamber through the furnace intake. The gas enters the furnace 7 through hole 14 and participates in combustion, as shown by arrows c and d. This is secondary air intake and secondary combustion. The carbon monoxide produced by the firewood participates in combustion during the secondary combustion. The furnace body 1 of this utility model makes the fire in the furnace 7 more intense through primary and secondary combustion, saving fuel and improving combustion efficiency. The flame in the furnace 7 passes upward through the flame port 15. Pots can be placed on the stove for cooking or boiling water. The baffle plate 20 can block the flame from entering the main combustion flue 17 and reduce heat loss. After the high-temperature flue gas enters the main combustion flue 17, it enters the chimney 19 through the switching valve 18 and is discharged outdoors.

[0096] After the high-temperature flue gas enters the positive combustion flue pipe 17, it carries the heat into the positive combustion flue pipe 17. Since a large part of the positive combustion flue pipe 17 is located inside the oven cavity 25, it can provide a lot of heat to the oven cavity 25. Users can open the oven door 37 and put in the food to be baked, so that this utility model can also be used as an oven.

[0097] When not baking food, the cover plate 36 on the side wall of the oven cavity 25 can be opened, and the warm air outlet 42 can be opened. The low-temperature air in the lower part of the room enters the warm air pipe 34 through the air inlet 35 at the lower end of the warm air pipe 34, and enters the oven cavity 25 through the warm air pipe 34 for heating. The heated high-temperature air is discharged through the warm air outlet 42, thereby heating the air in the room, accelerating the convection of indoor air, and making it easier to warm the room.

[0098] When burning inside the furnace 7, the fire can be observed through the first transparent viewing window 13 on the furnace door, which increases the aesthetics of this utility model and allows it to also be used as a fireplace. It has a compact structure and does not take up much space.

[0099] When burning backwards, such as Figure 1 , 2 As shown in 4 and 6, push the switching valve 18 to the leftmost position. At this time, the switching valve 18 is in the second position. The horizontal plate 40 in the L-shaped structure enters the positive combustion flue, and the vertical plate 41 blocks and closes the positive combustion flue and the chimney 19. The reverse combustion flue is connected to the chimney 19 for smoke exhaust. Open the firewood inlet 11, put in firewood, ignite the firewood, close the furnace door, and the chimney 19 starts to draw smoke. The air in the room enters the furnace 7 through the stove and the flame port 15, as shown by arrows G and H. The air intake chamber 21 draws in air from outside the furnace body 1 through the first air intake pipe 22. The air in the air intake chamber 21 enters the furnace cavity 5 through the second air intake pipe 23, as shown by arrow I. The air in the furnace cavity 5 enters the furnace 7 through the furnace air intake hole 14 to participate in combustion, as shown by arrows J and H. This is one intake and one combustion. At this time, some combustible gases, such as carbon monoxide, will be produced.

[0100] Air in the intake chamber 21 enters the furnace bottom chamber 6 through the first set of vent holes 24 to participate in combustion, as shown by arrow K. This is secondary air intake and secondary combustion. The carbon monoxide produced by the firewood participates in combustion during secondary combustion, resulting in more complete combustion, fuel saving, and high thermal efficiency.

[0101] After secondary combustion, the flame and high-temperature flue gas cross the baffle plate 32 and enter the left combustion chamber 28, as shown by arrow LM. The air in the furnace cavity 5 enters the left combustion chamber 28 through the second set of vent holes 33 and participates in combustion together with the high-temperature flue gas in the left combustion chamber 28, as shown by arrow N. This is three-stage air intake and three-stage combustion, which saves fuel and has high thermal efficiency.

[0102] After three combustion cycles, the high-temperature flue gas passes through the middle partition 27 and enters the right heat dissipation chamber 29, as shown by arrow OP. The high-temperature flue gas in the right heat dissipation chamber 29 enters the reverse combustion flue 30 and is discharged outdoors through the switching valve 18 into the chimney 19, as shown by arrow PQ.

[0103] After the high-temperature flue gas enters the reverse-burning flue 30, it carries the heat into the reverse-burning flue 30. Since a large part of the reverse-burning flue 30 is located inside the oven cavity 25, it can provide a lot of heat to the oven cavity 25. Users can open the oven door 37 and put in the food to be baked, so that this utility model can also be used as an oven.

[0104] When not baking food, the cover plate 36 on the side wall of the oven cavity 25 can be opened, and the warm air outlet 42 can be opened. The low-temperature air in the lower part of the room enters the warm air pipe 34 through the air inlet 35 at the lower end of the warm air pipe 34. Since the warm air pipe 34 is located in the left combustion chamber 28, the flame and high-temperature flue gas in the left combustion chamber 28 heat the air in the warm air pipe 34. The air in the warm air pipe 34 enters the oven cavity 25 for reheating. The heated high-temperature air is discharged through the warm air outlet 42, thereby heating the air in the room, accelerating the convection of indoor air, and making it easier to warm the room.

[0105] During secondary combustion in the furnace chamber 7, the fire can be observed through the first transparent observation window 13 on the furnace door; during tertiary combustion in the left combustion chamber 28, the fire can be observed through the second transparent observation window 38, which increases the aesthetics of this utility model and allows it to also be used as a fireplace. It has a compact structure and does not take up much space.

[0106] This utility model has the following advantages:

[0107] 1. Solves the incompatibility issue between forward and reverse burning in existing wood-burning stoves on the market;

[0108] 2. Simple to operate, no training required, easy to switch between forward and reverse burning. When burning forward, pull the switching valve to the far right; when burning in reverse, push the switching valve to the far left.

[0109] 3. Highly efficient cleaning, no smoke or dust indoors;

[0110] 4. Equipped with multiple combustion modes to handle various application scenarios:

[0111] a. High-pressure fire mode, easy to start, intense fire, can extinguish fire;

[0112] b. Positive combustion gasification mode, secondary air intake, secondary combustion, saving fuel and providing strong firepower;

[0113] c. Reverse combustion mode, three air intakes and three combustions, saving fuel and high thermal efficiency;

[0114] 5. Multiple uses: It can be used as an oven or a warm air box, requiring no power and allowing warm air to circulate naturally;

[0115] 6. Multiple viewing angles enhance aesthetics; compact structure saves space.

[0116] 7. In reverse heating mode, the fire sinks downwards, which accelerates the air convection in the room and makes it easier to warm the room. In addition, the temperature of the top surface of the furnace body 1 is not too high and is not hot to the touch, making it convenient to work on the top surface of the furnace body 1.

[0117] 8. A dust baffle was designed to automatically intercept cigarette ash.

[0118] The above description is merely an example for clearly illustrating the present invention, and is not intended to limit the implementation of the present invention. Any obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A gasification and reversible combustion integrated wood-fired stove, characterized in that, include: Furnace body, The furnace body has a left chamber and a right chamber inside. The left chamber is divided into the furnace head chamber, furnace chamber, and furnace bottom chamber from top to bottom. The furnace chamber contains a furnace chamber. A grate is installed between the furnace chamber and the furnace bottom chamber. A cleaning plate is provided in the furnace bottom cavity below the grate, and ash leakage holes are provided on the cleaning plate. An ash hopper is provided below the cleaning plate. A fire-adding opening is provided on the furnace chamber above the grate, and a furnace door is provided on the fire-adding opening. The furnace door is provided with a first transparent observation window. The furnace wall is equipped with furnace air inlet holes; The top of the furnace chamber is equipped with a flame port that communicates with the bottom of the furnace head chamber; A stove platform is located at the top of the burner cavity; The side of the furnace head cavity is provided with a positive combustion flue pipe that is connected to the furnace head cavity. The positive combustion flue pipe is connected to the chimney through a switching valve. A baffle plate is installed between the flame outlet and the flue pipe. An air inlet chamber is provided on the left side of the furnace bottom cavity inside the furnace body, and a first air inlet pipe is provided on the furnace body that communicates with the inside of the air inlet chamber. A second air inlet pipe, which communicates with the air inlet chamber, is installed inside the furnace cavity outside the furnace. A first set of vent holes is provided between the air inlet chamber and the furnace bottom chamber; The right chamber is divided into the oven cavity and the reverse combustion chamber from top to bottom. The reverse combustion chamber is equipped with a middle partition plate, which divides the reverse combustion chamber into a left combustion chamber and a right heat dissipation chamber connected by the upper part. The right heat dissipation chamber is equipped with a reverse flue pipe, which is connected to the chimney through a switching valve. A reverse-burning flue is provided on the right side of the furnace bottom cavity. The reverse-burning flue is connected to the left combustion chamber. An ash baffle is provided between the reverse-burning flue and the left combustion chamber. A second set of ventilation holes is provided between the furnace cavity outside the furnace and the combustion chamber on the left side; A warm air duct is provided in the left combustion chamber. The lower air inlet of the warm air duct is located at the back of the left combustion chamber and is connected to the outside. The upper end of the warm air duct is connected to the oven cavity. A warm air outlet connected to the outside is provided on the side wall of the oven cavity. A cover plate is provided at the warm air outlet. Both the forward-firing and reverse-firing smoke pipes pass through the oven cavity; The oven cavity is equipped with an oven door; When the switching valve is in the first position, the reverse-burning flue is blocked and closed from the chimney, while the forward-burning flue is connected to the chimney for exhaust; when the switching valve is in the second position, the forward-burning flue is blocked and closed from the chimney, while the reverse-burning flue is connected to the chimney for exhaust. A second transparent observation window is installed on the furnace body at a position corresponding to the left combustion chamber.

2. The integrated gasification and reversible combustion wood-fired stove according to claim 1, characterized in that: The cross-section of the forward-burning flue is rectangular, and the cross-section of the reverse-burning flue is rectangular. The switching valve includes a handle, and the left end of the handle has an L-shaped structure composed of a horizontal plate and a vertical plate. When the switching valve is in the first position, the horizontal plate in the L-shaped structure blocks and closes the reverse-burning flue from the chimney, while the forward-burning flue is connected to the chimney for smoke exhaust. When the switching valve is in the second position, the horizontal plate in the L-shaped structure enters the forward-burning flue, and the vertical plate blocks and closes the forward-burning flue from the chimney, while the reverse-burning flue is connected to the chimney for smoke exhaust.

3. The integrated gasification and reversible combustion wood-fired stove according to claim 1, characterized in that: The oven door is equipped with a transparent observation window.

4. The integrated gasification and reversible combustion wood-fired stove according to claim 1, characterized in that: The stove is equipped with a stove ring.

5. A gasification-fired integrated firewood stove according to claim 1, characterized in that: An inspection door is provided on the side wall of the right-side heat dissipation chamber.

6. A gasification-fired integrated firewood stove according to claim 5, characterized in that: The inspection door is equipped with a transparent observation window.

7. A gasification-fired integrated firewood stove according to claim 1, characterized in that: An air volume regulating valve is installed on the side wall of the air intake chamber.

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