Wood burning furnace with high burning efficiency

Abstract

The utility model discloses a wood burning furnace with high burning efficiency. Comprising a wood combustion furnace body, a combustion chamber is arranged in the wood combustion furnace body, a combustion cavity is formed in the combustion chamber, a smoke exhaust pipe is arranged at the top of the combustion chamber, and an air inlet module is arranged on the rear side of the combustion chamber and comprises an air inlet box, a first air inlet mechanism and a second air inlet mechanism; the first air inlet mechanism comprises first air guide pipes arranged in a bilateral symmetry mode, the rear ends of the first air guide pipes communicate with the corresponding sides of the top of the air inlet box, openings are formed in the top of the combustion chamber in a bilateral symmetry mode and correspond to the first air guide pipes one to one, and the front ends of the first air guide pipes communicate with the openings in the corresponding sides. An air guide plate is arranged at the position, corresponding to the opening, of the combustion cavity, the air guide plate inclines downwards from back to front, and the second air inlet mechanism is used for conducting secondary air inlet on the combustion cavity. The burner has the advantages of being good in burning effect, sufficient in burning and capable of solving the problem of fuel waste.

Description

Technical Field

[0001] This utility model relates to the field of wood-burning stove technology, and in particular to a wood-burning stove with high combustion efficiency. Background Technology

[0002] With the continuous improvement of people's living standards, the market demand for heating equipment such as wood-burning stoves is increasing. Existing wood-burning stoves generate heat by burning firewood or coal in their combustion chamber. However, the existing wood-burning stoves have a simple structure, and the combustion effect of combustible gases in the stove is not up to standard. The combustible gases from fuel decomposition cannot be completely burned, and the incompletely burned combustible gases will produce pollutants, resulting in excessively high pollutant emission concentrations. At the same time, the incompletely burned combustible gases cannot generate more heat, resulting in fuel waste and failing to achieve ideal combustion efficiency and thermal efficiency. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, this utility model provides a wood-burning stove with high combustion efficiency, which has the advantages of good combustion effect, complete combustion, and optimization of fuel waste problem.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] This utility model discloses a wood-burning stove with high combustion efficiency, comprising a stove body, a combustion chamber within the stove body, a combustion cavity within the combustion chamber, an exhaust pipe communicating with the combustion cavity at the top of the combustion chamber, the upper end of the exhaust pipe extending out of the stove body, an air intake module at the rear of the combustion chamber, the air intake module comprising an air intake box, a first air intake mechanism, and a second air intake mechanism, an air inlet at the rear of the air intake box, and multiple air intake holes at the rear of the stove body, the first air intake mechanism comprising symmetrically arranged first air guide pipes, the rear end of the first air guide pipes communicating with a corresponding side of the top of the air intake box, the top of the combustion chamber symmetrically arranged with openings communicating with the combustion cavity, the openings corresponding one-to-one with the first air guide pipes, the front end of the first air guide pipes communicating with the openings on the corresponding side, a guide plate at the corresponding opening position of the combustion cavity, the guide plate tilting downwards from back to front, and the second air intake mechanism for secondary air intake into the combustion cavity.

[0006] In this scheme, fuel is placed in the combustion chamber. After the fuel is ignited, multiple air inlets on the rear side of the external air vent of the wood-burning stove body enter the air inlet on the rear side of the air inlet box. Part of the air flows through the air inlet to the upper part of the air inlet box, and then flows into the two first air guide pipes. It flows through the first air guide pipes to the opening, is guided by the air guide plate, and moves along the upper surface of the air guide plate to the combustion chamber for combustion. After combustion, the air still contains some combustible gas. Another part of the air flows through the air inlet into the air inlet box, and flows into the combustion chamber through the second air inlet mechanism to fully contact the combustible air for secondary combustion. The fully combustible gas is discharged to the outside through the exhaust pipe.

[0007] Preferably, the combustion chamber has a slope on the rear side of the top, the slope is inclined upward from back to front, the slope has a smoke exhaust port for connecting to the smoke exhaust pipe, the combustion chamber has a smoke exhaust ramp corresponding to the smoke exhaust port, the smoke exhaust ramp is inclined upward from back to front, an internal exhaust channel is formed between the smoke exhaust ramp and the slope, an internal exhaust port is formed between the smoke exhaust ramp and the air guide plate, and the internal exhaust port is connected to the internal exhaust channel.

[0008] Preferably, the bottom front side of the air guide plate is provided with a first guide plate and a second guide plate, the first guide plate is located in front of the second guide plate, the first guide plate is inclined downward from front to back, the second guide plate is inclined downward from back to front, the bottom of the first guide plate is connected to the bottom of the second guide plate, and the second guide plate is located in front of the inner outlet.

[0009] After complete combustion, the combustible gas moves upward along the inclined plane, and after contacting the second guide plate, it is guided to the inner exhaust port, and then moves through the inner exhaust channel to the exhaust pipe for discharge.

[0010] Preferably, the second air intake mechanism includes second air guide pipes symmetrically arranged on the left and right sides of the air intake box, the air intake end of the second air guide pipe is connected to the corresponding side of the air intake box, and the air outlet end of the second air guide pipe is connected to the front side of the bottom of the combustion chamber.

[0011] Preferably, the combustion chamber is provided with a guide plate at the air outlet position corresponding to the second air duct. The guide plate includes a horizontal plate and an inclined plate. The horizontal plate is located above the air outlet of the second air duct, and the inclined plate is fixedly connected to the rear side of the horizontal plate. The inclined plate slopes downward from front to back.

[0012] Preferably, a secondary air intake box is provided at the top rear side of the combustion chamber, and a secondary air intake cavity is provided inside the secondary air intake box. A group of secondary air intake holes communicating with the secondary air intake cavity is provided at the top front side of the air intake box corresponding to the position of the secondary air intake cavity. The group of secondary air intake holes includes a plurality of secondary air intake holes arranged in a straight line from left to right. A first air outlet plate and a second air outlet plate are provided at the front side of the secondary air intake box. The first air outlet plate is vertically arranged, and the second air outlet plate is fixedly connected to the top of the first air outlet plate. The second air outlet plate is inclined upward from back to front. A first air outlet hole group is provided on the first air outlet plate, and the first air outlet hole group includes a plurality of first air outlet holes arranged in a straight line from left to right.

[0013] Preferably, the second air outlet plate is provided with a second air outlet group, which includes a plurality of second air outlets arranged in a straight line from left to right, and the second air outlets are staggered with the first air outlets.

[0014] To further improve combustion efficiency, a portion of the air entering the upper part of the air inlet box enters the secondary air inlet box through the secondary air inlet hole group, and is then ejected through the first air outlet group and the second air outlet group, mixing with the air after secondary combustion and burning again, so that the remaining combustible gas will be fully burned.

[0015] Preferably, the angle between the axis of the second air outlet and the axis of the first air outlet is 110 to 130 degrees.

[0016] Preferably, the air inlet box is provided with an air control module at the rear. The partition divides the space inside the air inlet box into a first air inlet space and a second air inlet space that are independent of each other. The first air inlet space is connected to a first air inlet mechanism, and the second air inlet space is connected to a second air inlet mechanism. The air inlet includes a first opening connected to the first air inlet space and a second opening connected to the second air inlet space. The air control module includes a wind deflector and a driver. The driver is used to drive the wind deflector to move so as to adjust the opening size of the first opening and the second opening.

[0017] In order to control the firepower of combustion in the combustion chamber, the driver drives the baffle to rotate, thereby adjusting the opening size of the first and second openings, and thus controlling the amount of air flowing into the combustion chamber.

[0018] Preferably, the wind deflector has a first notch corresponding to the first opening and a second notch corresponding to the second opening, wherein the size of the first notch is larger than the size of the first opening and the size of the second notch is larger than the size of the second opening.

[0019] The beneficial effects of this utility model are: the first air intake mechanism can improve the combustion efficiency in the combustion chamber; the second air intake mechanism can introduce air into the combustion chamber a second time, further improving the combustion efficiency; and the air control module can control the firepower of the combustion in the combustion chamber. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a rear view of the present invention;

[0022] Figure 3 This is a schematic diagram of the air inlet structure in this utility model;

[0023] Figure 4 This is a cross-sectional view of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the second air outlet and the first air outlet in this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the windshield in this utility model.

[0026] In the diagram: 1. Wood-burning stove body; 11. Exhaust pipe; 12. Air inlet; 2. Combustion chamber; 21. Air guide plate; 211. First guide plate; 212. Second guide plate; 22. Inclined surface; 23. Exhaust inclined plate; 24. Combustion chamber; 3. Air inlet box; 31. First air guide pipe; 32. Second air guide pipe; 4. Horizontal plate; 41. Inclined plate; 5. Secondary air inlet box; 51. First air outlet plate; 511. First air outlet; 52. Second air outlet plate; 521. Second air outlet; 6. First opening; 7. Second opening; 8. Partition; 9. Wind baffle; 91. First notch; 92. Second notch; 93. Driver. Detailed Implementation

[0027] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0028] Example: This example describes a wood-burning stove with high combustion efficiency, such as... Figures 1 to 6As shown, the stove includes a wood-burning stove body 1, a combustion chamber 2 inside the wood-burning stove body 1, a combustion cavity 24 inside the combustion chamber 2, an exhaust pipe 11 connected to the combustion cavity 24 at the top of the combustion chamber 2, the upper end of the exhaust pipe 11 extending out of the wood-burning stove body 1, an air intake module at the rear of the combustion chamber 2, the air intake module including an air intake box 3, a first air intake mechanism and a second air intake mechanism, an air inlet at the rear of the air intake box 3, and multiple air inlets 12 at the rear of the wood-burning stove body 1, the first air intake mechanism including a first air guide pipe 31 symmetrically arranged on the left and right, the rear end of the first air guide pipe 31 connected to the corresponding side of the top of the air intake box 3, the top of the combustion chamber 2 symmetrically arranged on the left and right, the openings corresponding to the first air guide pipe 31, the front end of the first air guide pipe 31 connected to the opening on the corresponding side, a guide plate 21 is arranged at the corresponding opening position in the combustion cavity, the guide plate 21 is inclined downward from back to front, and the second air intake mechanism is used to provide secondary air intake to the combustion cavity 24.

[0029] The combustion chamber has a slope 22 at the rear top, which slopes upward from back to front. The slope has a smoke exhaust port for connecting to the smoke exhaust pipe. Inside the combustion chamber, a smoke exhaust slope 23 is provided at the position corresponding to the smoke exhaust port. The smoke exhaust slope 23 slopes upward from back to front. An internal exhaust channel is formed between the smoke exhaust slope 23 and the slope 22. An internal exhaust port is formed between the smoke exhaust slope 23 and the air guide plate 21. The internal exhaust port is connected to the internal exhaust channel.

[0030] The bottom front side of the air guide plate 21 is provided with a first guide plate 211 and a second guide plate 212. The first guide plate 211 is located in front of the second guide plate 212. The first guide plate 211 is inclined downward from front to back, and the second guide plate 212 is inclined downward from back to front. The bottom of the first guide plate 211 is connected to the bottom of the second guide plate 212. The second guide plate 212 is located in front of the inner outlet.

[0031] The second air intake mechanism includes a second air duct 32 symmetrically arranged on the left and right sides of the air intake box 3. The air intake end of the second air duct 32 is connected to the corresponding side of the air intake box 3, and the air outlet end of the second air duct 32 is connected to the front side of the bottom of the combustion chamber.

[0032] A guide plate is provided in the combustion chamber 24 corresponding to the air outlet of the second air duct 32. The guide plate includes a horizontal plate 4 and an inclined plate 41. The horizontal plate 4 is located above the air outlet of the second air duct 32, and the inclined plate 41 is fixedly connected to the rear side of the horizontal plate 4. The inclined plate 41 is inclined downward from front to back.

[0033] A secondary air intake box 5 is provided at the top rear side of the combustion chamber. A secondary air intake cavity is provided inside the secondary air intake box 5. A secondary air intake hole group is provided at the top front side of the air intake box 3 corresponding to the position of the secondary air intake cavity and communicating with the secondary air intake cavity. The secondary air intake hole group includes multiple secondary air intake holes arranged in a straight line from left to right. A first air outlet plate 51 and a second air outlet plate 52 are provided at the front side of the secondary air intake box 5. The first air outlet plate 51 is set vertically. The second air outlet plate 52 is fixedly connected to the top of the first air outlet plate 51. The second air outlet plate 52 is inclined upward from back to front. A first air outlet hole group is provided on the first air outlet plate 51. The first air outlet hole group includes multiple first air outlet holes 511 arranged in a straight line from left to right.

[0034] The second air outlet plate 52 is provided with a second air outlet group, which includes a plurality of second air outlets 521 arranged in a straight line from left to right. The second air outlets 521 are staggered with the first air outlets 511. The angle between the axis of the second air outlet 521 and the axis of the first air outlet 511 is 110 degrees to 130 degrees.

[0035] An air control module is provided on the rear side of the air inlet box 3. A partition 8 is provided inside the air inlet box 3, which divides the space inside the air inlet box 3 into a first air inlet space and a second air inlet space. The first air inlet space is connected to the first air inlet mechanism, and the second air inlet space is connected to the second air inlet mechanism. The air inlet includes a second opening 7 connected to the second air inlet space and a first opening 6 connected to the two first air inlet spaces. A rotating shaft is provided at the center of the wind baffle 9, and the front side of the rotating shaft is rotatably connected to the rear side of the air inlet box 3. The air control module includes the wind baffle 9 and a driver 93. The driver 93 is used to drive the wind baffle 9 to move so as to adjust the opening size of the first opening 6 and the second opening 7.

[0036] The windshield 9 has a first notch 91 corresponding to the first opening position, and a second notch 92 corresponding to the second opening position. The size of the first notch 91 is larger than the size of the first opening, and the size of the second notch 92 is larger than the size of the second opening.

[0037] In this scheme, fuel is placed in the combustion chamber. After the fuel is ignited, multiple air inlets on the rear side of the external air vent of the wood-burning stove body enter the air inlet on the rear side of the air inlet box. Part of the air flows through the first opening to the upper part of the air inlet box, and then flows into the two first air guide pipes. It flows through the first air guide pipes to the opening, is guided by the air guide plate, moves along the upper surface of the air guide plate, and is then guided by the first guide plate to the combustion chamber for combustion. After combustion, the air still contains some combustible gas. Another part of the air flows into the lower part of the air inlet box through the second opening and flows through the second air guide pipe to the air guide plate below the bottom front side of the combustion chamber. After contacting the horizontal plate, this part of the air moves along the inclined plate into the combustion chamber and undergoes secondary combustion after fully contacting the air after combustion.

[0038] To further improve combustion efficiency, a portion of the air entering the upper part of the air inlet box enters the secondary air inlet box through the secondary air inlet hole group, and is then sprayed out through the first air outlet group and the second air outlet group. It mixes with the air after secondary combustion and burns again. The remaining combustible gas will be fully combusted. The fully combustible gas moves upward along the inclined plane, and after contacting the second guide plate, it is guided to the inner exhaust port, and then moves through the inner exhaust channel to the exhaust pipe for discharge.

[0039] Meanwhile, in order to control the firepower of combustion in the combustion chamber, the driver drives the baffle to rotate around the shaft to adjust the size of the second opening and the two first openings, thereby controlling the amount of air flowing into the combustion chamber.

Claims

1. A wood-burning stove with high combustion efficiency, characterized in that: The wood-burning stove body (1) is provided with a combustion chamber (2), and the combustion chamber (2) is provided with a combustion cavity (24). The top of the combustion chamber (2) is provided with a smoke exhaust pipe (11) communicating with the combustion cavity (24), the upper end of the smoke exhaust pipe (11) extends out of the wood-burning stove body (1), the rear side of the combustion chamber (2) is provided with an air inlet module, the air inlet module comprises an air inlet box (3), a first air inlet mechanism and a second air inlet mechanism, the rear side of the air inlet box (3) is provided with an air inlet, the rear side of the wood-burning stove body (1) is provided with a plurality of air inlet holes (12), the first air inlet mechanism comprises first air guide pipes (31) arranged symmetrically left and right, the rear end of the first air guide pipe (31) is communicated with the corresponding side of the top of the air inlet box (3), the top of the combustion chamber (2) is provided with openings communicating with the combustion cavity (24) symmetrically left and right, the openings correspond one-to-one with the first air guide pipes (31), the front end of the first air guide pipe (31) is communicated with the corresponding opening, the combustion cavity (24) is provided with air guide plates (21) corresponding to the opening positions, the air guide plates (21) are inclined downward from back to front, and the second air inlet mechanism is used for secondary air inlet of the combustion cavity (24).

2. The wood-burning stove with high combustion efficiency according to claim 1, characterized in that: The top rear side of the combustion cavity (24) is provided with an inclined surface (22) inclined upward from back to front, the inclined surface (22) is provided with a smoke exhaust port for communicating with the smoke exhaust pipe, the combustion cavity (24) is provided with a smoke exhaust inclined plate (23) corresponding to the smoke exhaust port position, the smoke exhaust inclined plate (23) is inclined upward from back to front, an internal exhaust passage is formed between the smoke exhaust inclined plate (23) and the inclined surface (22), and an internal exhaust port is formed between the smoke exhaust inclined plate (23) and the air guide plate (21), and the internal exhaust port is communicated with the internal exhaust passage.

3. The wood-burning stove with high combustion efficiency according to claim 2, characterized in that: The bottom front side of the air guide plate (21) is respectively provided with a first guide plate (211) and a second guide plate (212), the first guide plate (211) is located in front of the second guide plate (212), the first guide plate (211) is inclined downward from front to back, the second guide plate (212) is inclined downward from back to front, the bottom of the first guide plate (211) is connected with the bottom of the second guide plate (212), and the second guide plate (212) is located in front of the internal exhaust port.

4. The wood-burning stove with high combustion efficiency according to claim 2 or 3, characterized in that: The second air inlet mechanism comprises second air guide pipes (32) arranged symmetrically on the left and right sides of the air inlet box (3), the air inlet end of the second air guide pipe (32) is communicated with the corresponding side of the air inlet box (3), and the air outlet end of the second air guide pipe (32) is communicated with the front side of the bottom of the combustion cavity (24).

5. The wood-burning stove with high combustion efficiency according to claim 4, characterized in that: The combustion cavity (24) is provided with a flow guide plate corresponding to the air outlet end of the second air guide pipe (32), the flow guide plate comprises a horizontal plate (4) and an inclined plate (41), the horizontal plate (4) is arranged above the air outlet end of the second air guide pipe (32), the inclined plate (41) is fixedly connected to the rear side of the horizontal plate (4), and the inclined plate (41) is inclined downward from front to back.

6. The wood-burning stove with high combustion efficiency according to claim 4, characterized in that: The combustion cavity (24) rear side top is equipped with secondary air inlet box (5), the secondary air inlet box (5) is equipped with secondary air inlet cavity, the air inlet box (3) front side top is equipped with the secondary air inlet hole group that is communicated with secondary air inlet cavity in the corresponding secondary air inlet cavity position, the secondary air inlet hole group includes multiple secondary air inlet holes that are sequentially arranged into a straight line from left to right, the secondary air inlet box (5) front side is equipped with first air outlet plate (51) and second air outlet plate (52), the first air outlet plate (51) is vertically arranged, the second air outlet plate (52) is fixedly connected to the top of first air outlet plate (51), the second air outlet plate (52) is inclined from back to front, the first air outlet plate (51) is equipped with first air outlet hole group, and the first air outlet hole group includes multiple first air outlet holes (511) that are sequentially arranged into a straight line from left to right.

7. The wood-burning stove with high combustion efficiency according to claim 6, characterized in that: The second air outlet plate (52) is equipped with second air outlet hole group, and the second air outlet hole group includes multiple second air outlet holes (521) that are sequentially arranged into a straight line from left to right, and the second air outlet holes (521) are staggered with the first air outlet holes (511).

8. The wood-burning stove with high combustion efficiency according to claim 6, characterized in that: The angle between the axis of the second air outlet hole (521) and the axis of the first air outlet hole (511) is 110 to 130 degrees.

9. The wood-burning stove with high combustion efficiency according to claim 1, characterized in that: The air inlet box (3) rear side is equipped with a wind control module, the air inlet box (3) is equipped with a partition (8), the partition (8) divides the space in the air inlet box (3) into independent first air inlet space and second air inlet space, the first air inlet space is communicated with the first air inlet mechanism, and the second air inlet space is communicated with the second air inlet mechanism, the air inlet includes the first opening (6) communicated with the first air inlet space and the second opening (7) communicated with the second air inlet space, and the wind control module includes a wind baffle (9) and a driver (93), the driver (93) is used to drive the wind baffle (9) to move to adjust the opening size of the first opening (6) and the second opening (7).

10. The wood-burning stove with high combustion efficiency according to claim 9, characterized in that: The wind baffle (9) is equipped with a first notch (91) corresponding to the first opening position, the wind baffle (9) is equipped with a second notch (92) corresponding to the second opening position, the size of the first notch (91) is larger than the size of the first opening, and the size of the second notch (92) is larger than the size of the second opening.

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