Combustion device of open fire stove

Abstract

The utility model provides a combustion device of an open fire stove, which comprises a stove barrel, a stove ring and a stove box, a pair of partition plates is arranged in the stove box, primary air distribution holes are arranged on the surfaces of the partition plates, the partition plates divide the inner space of the stove box into a primary air distribution chamber and a combustion chamber, and primary air inlet holes and a feeding hole are arranged on the surface of the stove box. The primary air distribution chamber is communicated with the primary air inlet hole, the combustion chamber is communicated with the feeding hole, the furnace barrel is arranged above the combustion chamber, secondary air inlet holes are formed in the surface of the furnace barrel, secondary air distribution holes are formed in the surface of the furnace ring, the furnace ring is arranged at the upper end of the furnace barrel in a sleeving mode, and the periphery of the furnace ring and the inner wall of the furnace barrel form a secondary air distribution chamber in a surrounding mode. And the secondary air inlet hole and the secondary air distribution hole are communicated with the secondary air distribution chamber. By adopting the technical scheme, the solid fuel is combusted for the first time and the second time in sequence under the condition that oxygen is used for supporting combustion, so that the solid fuel is fully combusted, and heat energy of the solid fuel is thoroughly released.

Description

Technical Field

[0001] The utility model relates to the technical field of stoves, in particular to a combustion device of an open flame stove. Background Art

[0002] A stove is a device that generates heat energy by burning fuel. According to the type of fuel, stoves can be divided into kerosene stoves, gas stoves, wood stoves and other types. In recent years, with the demand for new rural construction and energy conservation and environmental protection, the development and utilization of biomass pellet fuel stoves has attracted more and more attention and has been gradually promoted and applied. Existing biomass pellet stoves generally include a stove body, a combustion chamber (7) is provided in the stove body, and the fuel is burned in the combustion chamber (7) to generate heat energy. In order to fully burn the fuel, it is generally necessary to ventilate the combustion chamber (7) so that oxygen in the air can enter the combustion chamber (7) so that the oxygen can have a combustion-supporting effect on the combustion.

[0003] In the prior art, a patent document with a publication number of "CN213841031U" discloses a stove capable of full combustion, comprising a stove, a burner arranged on the stove, an oil spray nozzle arranged on the burner, and an air inlet pipe arranged at the bottom of the burner, the burner comprising a hollow burner shell and a furnace core whose bottom can extend into the burner shell, a ventilation cavity is formed between the inner wall of the burner shell and the outer wall of the furnace core, and both the burner shell and the bottom of the furnace core are provided with a through air inlet, a plurality of through ventilation holes are arranged in an annular manner on the outer wall of the furnace core, wind from the air inlet pipe is blown into the ventilation cavity and the furnace core through the air inlet, and wind in the ventilation cavity is blown into the furnace core through the ventilation holes, by adopting the patented technology, fuel is sprayed into the furnace core through the oil spray nozzle, and the wind direction entering through the inclined ventilation holes can be opposite to the injection direction of the fuel, forming a counter-spray, which can concentrate the fuel in the central combustion area, so that the fuel can be fully burned, and can effectively prevent the fuel from being sprayed onto the inner wall of the furnace core, thereby avoiding the accumulation of oil stains. However, for stoves using biomass pellet solid fuel, the solid fuel is often not completely burned in one combustion, and one combustion process cannot release all the heat energy of the solid fuel. Therefore, the above patented technology is relatively limited in improving the completeness of fuel combustion. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a combustion device for an open flame stove.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides a combustion device of an open flame stove, comprising a furnace barrel, a furnace ring and a furnace box, wherein a pair of partitions are arranged in the furnace box, primary air distribution holes are arranged on the surfaces of the partitions, and the partitions divide the internal space of the furnace box into a primary air distribution chamber and a combustion chamber, primary air inlet holes and feed holes are arranged on the surface of the furnace box, the primary air distribution chamber is communicated with the primary air inlet holes, and the combustion chamber is communicated with the feed holes, the furnace barrel is arranged above the combustion chamber, secondary air inlet holes are arranged on the surface of the furnace barrel, secondary air distribution holes are arranged on the surface of the furnace ring, the furnace ring is sleeved on the upper end of the furnace barrel, a secondary air distribution chamber is formed around the furnace ring and the inner wall of the furnace barrel, and the secondary air inlet holes and the secondary air distribution holes are both communicated with the secondary air distribution chamber.

[0007] The furnace ring is also fixedly connected with the upper furnace ring and the lower furnace ring respectively. The upper furnace ring covers the upper edge of the furnace barrel, and the lower furnace ring abuts against the inner wall surface of the furnace barrel.

[0008] The furnace ring, the upper furnace ring and the lower furnace ring are integrally manufactured.

[0009] The number of the primary air distribution holes is multiple, and the multiple primary air distribution holes are arranged on the surface of the partition in a linear array.

[0010] The number of the secondary air distribution holes is multiple, and the multiple secondary air distribution holes are arranged around the furnace ring in a circular array.

[0011] A material guide plate is also provided in the combustion chamber, and the left and right sides of the material guide plate are respectively fixedly connected to the partition plate, and one end of the material guide plate is also fixedly connected to the lower edge of the inner wall of the furnace box, and an ash unloading hole is formed between the other end of the material guide plate and the inner wall of the furnace box, and the ash unloading hole is close to the upper edge of the inner wall of the furnace box.

[0012] The projection of the guide plate on the surface of the partition plate is S-shaped.

[0013] The surface of the guide plate is also provided with a plurality of ash leakage holes.

[0014] The furnace drum is also fixedly connected to one end of the air supply pipe, and the air supply pipe is communicated with the secondary air inlet hole, and the other end of the air supply pipe extends downward in the vertical direction.

[0015] The furnace box is also fixedly connected to the furnace jacket, and the lower end of the furnace barrel is sleeved in the furnace jacket.

[0016] The beneficial effect of the utility model is that: by adopting the technical scheme of the utility model, biomass particle solid fuel is fed into the combustion chamber through the feed hole, and the solid fuel is first burned for the first time in the combustion chamber. Since the primary air distribution chamber is arranged on the left and right sides of the combustion chamber, the airflows from the primary air distribution chamber blow against each other, which can avoid local accumulation of solid fuel into a mass, and make the solid fuel evenly spread on the surface of the guide plate, and then make the solid fuel burn fully for the first time. After the first combustion, the high-temperature flue gas enters the furnace ring, and the natural airflow from the external environment first enters the secondary air distribution chamber, and then enters the furnace ring along the radial direction of the furnace ring through the secondary air distribution hole. The airflow contains oxygen, and under the combustion-aiding effect of oxygen, the high-temperature flue gas is burned for the second time, so that the solid fuel is burned for the first time and the second time in succession with the combustion-aiding effect of oxygen, so that the solid fuel is fully burned and its heat energy is completely released. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an axonometric drawing of the utility model;

[0018] Figure 2 It is the front view of the utility model;

[0019] Figure 3 The utility model is along Figure 2 Sectional view cut along the AA plane;

[0020] Figure 4 The utility model is along Figure 2 Sectional view of the BB plane;

[0021] Figure 5 The utility model is along Figure 2 Sectional view of the CC plane;

[0022] Figure 6 It is an axonometric diagram of the furnace drum of the utility model;

[0023] Figure 7 It is an axonometric drawing of the furnace ring, the upper furnace ring and the lower furnace ring of the utility model;

[0024] Figure 8 It is an axonometric drawing of the material guide plate of the utility model.

[0025] In the figure: 1-furnace drum, 2-furnace ring, 3-furnace box, 4-partition, 5-primary air distribution hole, 6-primary air distribution chamber, 7-combustion chamber, 8-primary air inlet hole, 9-feed hole, 10-secondary air inlet hole, 11-secondary air distribution hole, 12-secondary air distribution chamber, 13-upper furnace ring, 14-lower furnace ring, 15-guide plate, 16-ash unloading hole, 17-ash leakage hole, 18-air supply pipe, 19-ignition hole, 20-ash unloading frame, 21-ear plate, 22-furnace sleeve. DETAILED DESCRIPTION

[0026] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0027] The utility model provides a burning device for an open flame stove, such as Figures 1 to 8 As shown, it includes a furnace barrel 1, a furnace ring 2 and a furnace box 3. A pair of partitions 4 are provided in the furnace box 3. The surface of the partitions 4 is provided with primary air distribution holes 5, and the partitions 4 divide the internal space of the furnace box 3 into a primary air distribution chamber 6 and a combustion chamber 7. The surface of the furnace box 3 is provided with primary air inlet holes 8 and feed holes 9. The primary air distribution chamber 6 is connected with the primary air inlet holes 8, and the combustion chamber 7 is connected with the feed holes 9. The furnace barrel 1 is arranged above the combustion chamber 7. The surface of the furnace barrel 1 is provided with secondary air inlet holes 10, and the surface of the furnace ring 2 is provided with secondary air distribution holes 11. The furnace ring 2 is mounted on the upper end of the furnace barrel 1, and a secondary air distribution chamber 12 is formed around the furnace ring 2 and the inner wall of the furnace barrel 1. The secondary air inlet holes 10 and the secondary air distribution holes 11 are both connected with the secondary air distribution chamber 12.

[0028] By adopting the technical scheme of the utility model, biomass particle solid fuel is fed into the combustion chamber through the feed hole, and the solid fuel is first burned for the first time in the combustion chamber. Since the primary air distribution chamber is arranged on the left and right sides of the combustion chamber, the airflows from the primary air distribution chamber blow against each other, which can avoid local accumulation of solid fuel into a mass, and make the solid fuel evenly spread on the surface of the guide plate, and then make the solid fuel burn fully for the first time. The high-temperature flue gas after the first combustion enters the furnace ring, and the natural airflow from the external environment first enters the secondary air distribution chamber, and then enters the furnace ring along the radial direction of the furnace ring through the secondary air distribution hole. The airflow contains oxygen, and under the combustion-aiding effect of oxygen, the high-temperature flue gas is burned for the second time, and the solid fuel is burned for the first time and the second time in succession with the combustion-aiding effect of oxygen, so that the solid fuel is fully burned and its heat energy is completely released.

[0029] Specifically, the furnace ring 2 is also fixedly connected to the upper furnace ring 13 and the lower furnace ring 14, respectively. The upper furnace ring 13 covers the upper edge of the furnace barrel 1, and the lower furnace ring 14 abuts against the inner wall of the furnace barrel 1. Preferably, the furnace ring 2, the upper furnace ring 13, and the lower furnace ring 14 are integrally manufactured. Therefore, the airflow from the external environment is evenly distributed in the secondary air distribution chamber, and then enters the furnace ring from all directions, so that the high-temperature flue gas in the furnace barrel is fully burned for the second time everywhere.

[0030] In addition, the inclination angle between the surface of the lower furnace ring 14 and the axial direction of the furnace drum 1 is greater than zero. The lower furnace ring 14 has a guiding effect on the flow direction of the high-temperature flue gas. Since the inclination angle between the surface of the lower furnace ring 14 and the axial direction of the furnace drum 1 is greater than zero, the high-temperature flue gas can be gathered into the furnace ring, and further the high-temperature flue gas is fully burned for the second time.

[0031] In addition, there are multiple primary air distribution holes 5, and the multiple primary air distribution holes 5 are arranged on the surface of the partition 4 in a linear array. There are multiple secondary air distribution holes 11, and the multiple secondary air distribution holes 11 are arranged around the furnace ring 2 in a circular array. A guide plate 15 is also provided in the combustion chamber 7, and the left and right sides of the guide plate 15 are respectively fixedly connected to the partition 4, and one end of the guide plate 15 is also fixedly connected to the lower edge of the inner wall of the furnace box 3. The other end of the guide plate 15 is surrounded by the inner wall of the furnace box 3 to form an ash discharge hole 16, and the ash discharge hole 16 is close to the upper edge of the inner wall of the furnace box 3. Preferably, the projection of the guide plate 15 on the surface of the partition 4 is S-shaped. A plurality of ash leakage holes 17 are also provided on the surface of the guide plate 15. There are two primary air distribution chambers 6, and the two primary air distribution chambers 6 are arranged on the left and right sides of the combustion chamber 7. By adopting the technical solution of the utility model, biomass particle solid fuel is fed into the combustion chamber through the feed hole. Since the primary air distribution chamber is arranged on the left and right sides of the combustion chamber, the airflows from the primary air distribution chamber blow against each other, which can avoid local accumulation of solid fuel into clumps, and make the solid fuel evenly spread on the surface of the guide plate, and then make the solid fuel fully burn and release the maximum heat energy. In addition, the airflow can also be fed into the combustion chamber through the feed hole, which has a direct combustion-supporting effect on the solid fuel in the combustion chamber. As the solid fuel burns, the burned fuel is lighter in weight and is blown to the rear end of the guide plate by the airflow, which also makes the solid fuel evenly spread on the surface of the guide plate, further making the fuel fully burn. When the solid fuel is finally burned into ash, the ash can fall out of the combustion chamber from the ash discharge hole.

[0032] In addition, there are two secondary air inlet holes 10, which are arranged on the left and right sides of the furnace barrel 1. The furnace barrel 1 is also fixedly connected to one end of the supplementary air pipe 18, and the supplementary air pipe 18 is connected to the secondary air inlet hole 10, and the other end of the supplementary air pipe 18 extends downward in the vertical direction. Thus, natural wind is drawn from the bottom of the furnace to provide combustion-supporting oxygen for the second combustion of solid fuel in the furnace ring.

[0033] Specifically, the surface of the furnace box 3 is also provided with an ignition hole 19, and the combustion chamber 7 is also connected to the ignition hole 19. The furnace box 3 is also fixedly connected to the ash unloading frame 20, and the ash unloading frame 20 is arranged below the guide plate 15. The surface of the furnace box 3 is also fixedly connected to the ear plate 21. With the technical solution of the utility model, during the initial ignition, the igniter is extended into the combustion chamber through the ignition hole. Since the airflow can enter the combustion chamber through the feed hole, the flame is blown into the combustion chamber, so that the solid fuel is easily ignited in the combustion chamber. When the solid fuel burns in the combustion chamber, since the airflow enters the combustion chamber through the feed hole, it can prevent the ash from flowing back in the opposite direction and blocking the igniter in the ignition hole 11, thereby ensuring the normal use of the igniter.

[0034] In addition, the furnace box 3 is also fixedly connected to the furnace jacket 22, and the lower end of the furnace barrel 1 is sleeved in the furnace jacket 22. By adopting the technical solution of the utility model, the heat energy generated by the combustion of solid fuel is sent upward through the furnace barrel 12, and the furnace box 1 is also fixedly connected to the ash discharge frame 13, which is arranged below the guide plate 8. The ash generated by the solid fuel falls into the ash discharge frame 13 through the ash discharge hole and the ash leakage hole, and is concentrated under the guidance of the ash discharge frame 13, so as to facilitate the timely removal of ash and avoid affecting the full combustion of solid fuel.

Claims

1. A combustion device for an open flame stove, characterized in that: The invention comprises a furnace barrel (1), a furnace ring (2) and a furnace box (3), wherein a pair of partitions (4) are arranged in the furnace box (3), a primary air distribution hole (5) is arranged on the surface of the partitions (4), and the partitions (4) divide the internal space of the furnace box (3) into a primary air distribution chamber (6) and a combustion chamber (7), a primary air inlet hole (8) and a feed hole (9) are arranged on the surface of the furnace box (3), the primary air distribution chamber (6) is connected to the primary air inlet hole (8), the combustion chamber (7) is connected to the feed hole (9), and the feed hole (9) is used to allow biomass particle solid fuel and airflow to be sent into the combustion chamber (7), and the furnace barrel (1) is arranged at Above the combustion chamber (7), the surface of the furnace barrel (1) is provided with a secondary air inlet hole (10), and the surface of the furnace ring (2) is provided with a secondary air distribution hole (11). The furnace ring (2) is mounted on the upper end of the furnace barrel (1), and a secondary air distribution chamber (12) is formed around the furnace ring (2) and the inner wall of the furnace barrel (1). The secondary air inlet hole (10) and the secondary air distribution hole (11) are both connected to the secondary air distribution chamber (12); the furnace barrel (1) is also fixedly connected to one end of an air supply pipe (18), and the air supply pipe (18) is connected to the secondary air inlet hole (10), and the other end of the air supply pipe (18) extends downward in the vertical direction.

2. A combustion device for an open flame stove as claimed in claim 1, characterized in that: The furnace ring (2) is also fixedly connected to an upper furnace ring (13) and a lower furnace ring (14), respectively. The upper furnace ring (13) covers the upper edge of the furnace barrel (1), and the lower furnace ring (14) abuts against the inner wall surface of the furnace barrel (1).

3. A burning device for an open flame stove as claimed in claim 2, characterized in that: The furnace ring (2), the upper furnace ring (13) and the lower furnace ring (14) are integrally manufactured.

4. The burning device of an open flame stove according to claim 1, characterized in that: The number of the primary air distribution holes (5) is multiple, and the multiple primary air distribution holes (5) are arranged on the surface of the partition plate (4) in a linear array.

5. The burning device of an open flame stove according to claim 1, characterized in that: The number of the secondary air distribution holes (11) is multiple, and the multiple secondary air distribution holes (11) are arranged around the furnace ring (2) in a circular array.

6. The burning device of an open flame stove according to claim 1, characterized in that: A material guide plate (15) is also provided in the combustion chamber (7), and the left and right sides of the material guide plate (15) are respectively fixedly connected to the partition plate (4), and one end of the material guide plate (15) is also fixedly connected to the lower edge of the inner wall of the furnace box (3), and an ash discharge hole (16) is formed between the other end of the material guide plate (15) and the inner wall of the furnace box (3), and the ash discharge hole (16) is close to the upper edge of the inner wall of the furnace box (3).

7. A burning device for an open flame stove as claimed in claim 6, characterized in that: The projection of the guide plate (15) on the surface of the partition plate (4) is S-shaped.

8. A burning device for an open flame stove as claimed in claim 6 or 7, characterized in that: The surface of the material guide plate (15) is also provided with a plurality of ash leakage holes (17).

9. The burning device of an open flame stove according to claim 1, characterized in that: The furnace box (3) is also fixedly connected to the furnace jacket (22), and the lower end of the furnace barrel (1) is sleeved in the furnace jacket (22).

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