WO2013159267A1

WO2013159267A1 - Biomass fuel stove

Info

Publication number: WO2013159267A1
Application number: PCT/CN2012/074494
Authority: WO
Inventors: 朱宏锋; 陈前喜
Original assignee: Zhu Hongfeng; Chen Qianxi
Priority date: 2012-04-23
Filing date: 2012-04-23
Publication date: 2013-10-31
Also published as: CN104067050A; US20150159879A1

Abstract

A biomass fuel (70) stove uses biomass fuel (70) particles, and comprises a body (1) capable of being placed on the ground. The body (1) comprises a top surface (11) and a side surface (12) extending from the periphery of the top surface (11) downwards to the ground, and is provided with a combustion portion (10) and an auxiliary equipment portion (20). The combustion portion (10) comprises a combustor (30). The combustor (30) has a fuel frame (31), a combustion area (32) is formed above the fuel frame (31), and a blast area (33) is formed below the fuel frame (31). A plurality of vent holes (311) is provided on the fuel frame (31). An air supplement device (40) is provided above the combustion area (32), and the air supplement device (40) comprises a cylindrical inner wall (41) and an air feed chamber (42) encircling the cylindrical inner wall (41). The blast area (33) is in communication with the air feed chamber (42), and is supplied with supplementary oxygen uniformly by a blower (51) through an air feed pipe (34). The auxiliary equipment portion (20) is provided with electrical equipment (50), and the electrical equipment (50) comprises the blower (51), a power supply (52), and a power supply switch (53). The cylindrical inner wall (41) of the air supplement device (40) is provided with at least one row of positive air shift devices (43) and at least one row of negative air shift devices (44).

Description

Biomass fuel stove

Technical field

The invention relates to a stove using biomass fuel, in particular to a small particle which is crushed, dried and pressed by straw, wood chips, bamboo, crop straw, etc., and uses turbulent flow in the flame zone. The wind form thus greatly improves the energy utilization efficiency of the stove.

Background technique

Biomass fuel is small particles made from straw, wood chips, bamboo, crop straw, etc., which are crushed, dried and pressed. As a new type of energy, biomass fuel has begun to gain wider application due to its advantages of hygiene, environmental protection, high efficiency and economy.

The inventor of the international patent application PCT/CN2012/01746 A biomass fuel stove is disclosed in 'A High Efficiency Stove'. As shown in Figs. 14 and 15, the stove has a body 9 including a combustion chamber 91 and an auxiliary equipment box 92. The combustion chamber 91 houses a burner 93 having a fuel rack 931. A combustion zone 932 is formed above the fuel rack 931, and an blast zone 933 is formed below. Burning area Above the 932 is the flame zone 934 with a supplemental device 94. The air supply device 94 includes a cylindrical inner wall 941, a blowing chamber 942, and a communication air chamber 942 and an air blowing area. 933 air duct 943. The cylindrical inner wall 941 of the air supply device 94 is longitudinally provided with a plurality of wind deflectors 95 on the outer side surface. Each deflector 95 includes a long slit 951 On the outer surface of the cylindrical inner wall 941, a baffle 952 is formed along the long slit 951 on the left side of each of the long slits 951 or on the right side of each of the long slits 951, each of the baffles 952 extends in the direction of the corresponding slit 951 and is at an angle to the outer surface of the cylindrical inner wall 941, which is greater than 0 degrees and less than 90 degrees.

Although the air supply method of the stove solves the interference between the airflows, there are still technical problems. Wind deflector 95 in air supply device 94 Cylindrical inner wall 941 A unidirectionally rotating upward air flow similar to a tornado is formed in the inner flame zone. This swirling air flow both solves the interference problem between the supplemental airflows and supplements the gas with the oxygen required for combustion. At the same time, due to the unidirectional nature of the flow of the rotating air, the oxygen in the air is not sufficiently mixed with the gas, resulting in insufficient combustion. Secondly, due to the unidirectionality of the airflow, the unseen spiral airflow will rise faster, and quickly take away some of the gas and heat that have not been fully burned, which will further waste energy. Third, the insufficient combustion caused by the above two reasons will make the concentration of unburned carbon-containing particles contained in the exhausted combustion exhaust gas higher, and the external phenomenon is more black smoke. Fourth, the air supply device 94 The heat in the internal flame zone is always carried away quickly and does not form a higher temperature.

technical problem

The technical problem to be solved by the present invention is to provide a biomass fuel stove which can not interfere with the mutual interference between the supplemental airflows and the oxygen in the supplemental airflow compared with the conventional stoves. The gas is thoroughly mixed to make the gas burn more fully.

Another technical problem to be solved by the present invention is to provide a biomass fuel stove which can slow down the rate at which high temperature gas leaves in the flame zone, thereby obtaining a higher heating temperature.

Technical solution

In order to solve this technical problem, the present invention provides a biomass fuel stove that uses biomass fuel particles and includes a body that can be placed on the ground, the body including a top surface and a top surface The side that extends downward from the ground. The body houses a combustion section and an auxiliary device section. The combustion part comprises a burner, the burner has a fuel frame, a combustion zone is formed above the fuel frame, a blast zone is formed below, and a plurality of ventilation holes are formed in the fuel frame. There is a supplemental air device above the combustion zone. The air supply device includes a cylindrical inner wall and a blower chamber surrounding the outer side of the cylindrical inner wall. The blast zone is connected to the air supply room, and a blower is used to provide oxygen supplementation through a blower. The auxiliary equipment department houses electrical equipment. Electrical equipment including blowers, power supplies with A power switch. The cylindrical inner wall of the air supply device is provided with at least one row of positive wind deflecting means and at least one row of reverse wind deflecting means. Each row of forward wind deflecting means includes a plurality of first openings, and on the outer surface of the cylindrical inner wall, a first one is formed on the left side of each of the first openings or on the right side of each of the first openings a baffle, each of the first baffles extending in a direction of the corresponding first opening and having a larger than an outer surface of the cylindrical inner wall An angle of 0 degrees less than 90 degrees a . Each row of reverse wind deflecting means includes a plurality of second openings, and on the outer surface of the cylindrical inner wall, a second deflector is formed on the opposite side of each of the second openings from the first deflector. Each second baffle extends in a direction of the corresponding second opening and is larger than an outer surface of the cylindrical inner wall An angle of 0 degrees less than 90 degrees b .

Beneficial effect

The invention has the beneficial effects that the airflow entering the flame zone from the forward and reverse deflecting devices respectively can fully mix the oxygen and the gas in the supplemental airflow, thereby making the combustion more fully and improving the energy utilization rate. . At the same time, the interaction of the two gas streams slows the rate at which the high temperature gas leaves the flame zone compared to the one-way spiral gas flow, thereby enabling the furnace to achieve a higher combustion temperature. Experiments have shown that the furnace of this embodiment can increase the temperature compared with the conventional biomass stove. 20-30%. Third, due to sufficient combustion, the concentration of unburned carbonaceous particulates contained in the exhaust gas is greatly reduced, and the flame no longer generates black smoke.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a preferred embodiment of the present invention.

Figure 2 is a perspective exploded view of the embodiment of Figure 1.

Figure 3a is a top plan view of the embodiment of Figure 1.

Figure 3b is a cross-sectional view of the A-A direction of Figure 3a.

Figure 4 is a partial perspective view showing the cylindrical inner wall portion of the burner and the air supply device in the preferred embodiment of the present invention.

Figure 5 is a partial plan view showing a portion of a cylindrical inner wall portion of a burner and a supplemental air device in accordance with a preferred embodiment of the present invention.

Figure 6 is a circuit diagram of a portion of an electrical device in accordance with a preferred embodiment of the present invention.

Figure 7 is a perspective view of another embodiment of the present invention.

Figure 8 is a perspective exploded view of the embodiment of Figure 7.

Figure 9 is a cross-sectional plan view showing the embodiment of Figure 7.

Figure 10 is an enlarged perspective view showing an enlarged portion of the air supplementing device of the embodiment shown in Figure 7.

Figure 11 is a plan enlarged view of the cylindrical inner wall of the air supplement device shown in Figure 10.

Figure 12 is a circuit diagram of the electrical equipment portion of the embodiment shown in Figure 7.

Figures 13a, 13b and 13c are enlarged perspective views of three other turbulent air supplement devices of the present invention.

Figure 14 is a plan cross-sectional view of a conventional biomass fuel stove with a supplemental device. as well as,

Fig. 15 is a plan enlarged view showing a cylindrical inner wall portion of the air supply device of the cooker shown in Fig. 14.

BEST MODE FOR CARRYING OUT THE INVENTION

Figure 1 and Figure 2 Shown is a perspective view of a preferred embodiment of a biomass fuel stove of the present invention. The stove includes a body 1 that can be placed on the ground, the body 1 including a top surface 11 and a top surface 11 A side 12 extending downward toward the ground, the body 1 houses a combustion portion 10 and an auxiliary device portion 20.

Referring also to Figures 3a and 3b, the combustion section 10 includes a burner 30 and a burner 30. Upper air supply unit 40. The burner 30 has a fuel rack 31, a combustion zone 32 is formed above the fuel rack 31, and a blast zone 33 is formed below. There are several ventilation holes on the fuel rack 31. 311. The air supply unit 40 includes a cylindrical inner wall 41 and a blower chamber 42 that surrounds the outer side of the cylindrical inner wall 41. In the preferred embodiment, the blast zone 33 and the blower chamber 42 Connected to each other and supplied with oxygen through a blower 51 through a supply duct 34. The cylindrical inner wall 41 itself encloses a flame region at its intermediate portion.

Referring also to Figures 4 and 5, the cylindrical inner wall 41 is provided with at least one row of forward biasing means 43 and at least one row of reverse biasing means. 44. Each row of forward biasing means 43 includes a plurality of first openings 431 on the outer surface of each of the first openings 431 or on each of the first openings 431 on the outer surface of the cylindrical inner wall 41. A first baffle 432 is formed on the right side of the first baffle 432, and each of the first baffles 432 extends in a direction of the corresponding first opening 431 and is at an angle to the outer surface of the cylindrical inner wall 41. It is greater than 0 degrees and less than 90 degrees, preferably 45 degrees. In the illustrated embodiment, all of the first baffles 432 are on the left side corresponding to the first opening 431 and are directed to the corresponding first opening 431. The direction extends to the right. Each row of reverse wind deflecting means 44 includes a plurality of second openings 441 on the outer surface of the cylindrical inner wall 41 at each of the second openings 441 and the first deflector 432 On the opposite side, a second baffle 442 is formed, each of the second baffles 442 extending in the direction of the corresponding second opening 441 and at an angle to the outer surface of the cylindrical inner wall 41, angle b It is greater than 0 degrees and less than 90 degrees, preferably 45 degrees. In the illustrated embodiment, all of the second baffles 442 are on the right side of the corresponding second opening 441 and toward the corresponding second opening 441. The direction extends to the left.

In the present embodiment, the auxiliary device unit 20 houses the electric device 50. The circuit diagram of electrical equipment 50 is shown in Figure 6. Included is a blower 51 that supplies air to the blast zone 33 and the plenum 42 of the combustor 30, a power source 52, a power switch 53 and a power indicator light 54. Power supply 52 It can be either an AC/DC power supply 521 or a parallel battery 522 as an auxiliary power supply on the AC/DC power supply 521. Both AC and DC power supply 521 and battery 522 can be powered separately. switch 53 Mounted on the side 12 to control the power supply to the entire circuit, the switch indicator 54 is also mounted near the power switch 53 on the side 12 to indicate the power switch 53 Opening and closing status.

Fuel 70 is a biomass fuel, which is a small particle that is crushed, dried, and pressed by straw, wood chips, bamboo, and crop straw.

In use, the user can first place the body 1 of the present invention on the ground at the desired position, and the air supply device 40 through the combustion portion 10 In the flame zone enclosed by the cylindrical inner wall 41, fuel 70 particles are placed on the fuel rack 31 of the burner 30. When the user presses the power switch 53, the switch indicator 54 Lights up, indicating that the power is on and the stove is working. At this point, the user can put the ignited alcohol cotton ball onto the fuel 70 particles on the fuel rack 31 to ignite the fuel 70 above. At the same time, the blower 51 Air is supplied to the blast zone 33 and the plenum chamber 42, and the air entering the blast zone 33 passes through the venting aperture 311 formed in the fuel rack 31 as the fuel in the combustion zone 32. The combustion provides the required oxygen. The wind entering the blower chamber 42 passes through the forward biasing device 43 and the reverse biasing device 44 and enters the flame zone enclosed by the cylindrical inner wall 41. When fuel 70 When burned to a certain extent, a low concentration of methane gas is generated, which forms a flame under the action of the air flow generated by the blower 51. Different from the traditional way of filling the wind zone, from each positive wind deflector 43 The air entering the flame zone passes through the first baffle 432 and becomes a one-way flow from each of the first openings 431 in a clockwise or counterclockwise direction, so that the positive wind deflecting device 43 The air entering the flame zone is in the form of a unidirectional spiral. At the same time, the air entering the flame zone from each of the reverse biasing devices 44 passes through the second deflector 442 and becomes the positive and negative wind deflecting device 43. The airflow entering the flame zone flows in one direction from each of the second openings 441, so that the air entering the flame zone from the reverse deflector 44 is a positive and negative wind deflector 43 A unidirectional spiral in the opposite direction of the gas flow into the flame zone. From the forward and reverse

wind deflectors

43 , 44 The airflow entering the flame zone can fully mix the oxygen and gas in the supplemental airflow, making the combustion more complete and improving energy utilization. At the same time, the interaction of the two gas streams slows the rate at which the high temperature gas leaves the flame zone compared to the one-way spiral gas flow, thereby enabling the furnace to achieve a higher combustion temperature. Experiments have shown that the furnace of this embodiment can increase the temperature compared with the conventional biomass stove. 20-30%. During use, the user can manually inject fuel 70 particles into the burner 30 from time to time to ensure continuous combustion.

A plurality of spoiler air supply means 45 may also be provided on the cylindrical inner wall 41. Disturbing air supply device 45 It may be any device capable of filling the flame zone in the cylindrical inner wall 41. As shown in Fig. 4, in this embodiment, the turbulence air supply unit 45 includes a plurality of spoilers 451 formed on the cylindrical inner wall 41. . After the blower 51 is actuated, the supply air flow enters the flame zone enclosed by the cylindrical inner wall 41 through the forward and

reverse biasing devices

43, 44, and also passes through the spoiler 451 of the turbulent air supply device 45. Enter into the area. The airflow entering the flame zone by the turbulent air supply device 45 can further fully mix the oxygen and the gas in the airflow to further improve the energy utilization rate. At the same time, the turbulent air supply device 45 The flow entering the flame zone can further slow the rate at which the hot gas exits the flame zone, thereby further increasing the combustion temperature of the oven. Figures 13a, 13b and 13c Three other forms of spoiler air supply devices are shown. In the embodiment shown in Fig. 13a, the turbulence air supply unit 45 is a thin tube 452 that is connected to the air supply chamber 42 and a thin tube 452. A plurality of spoilers 451' are provided in the upper opening. In the embodiment shown in Fig. 13b, the turbulence air supply means 45 is a plurality of thin tubes 453 which are connected to the air supply chamber 42, and the thin tubes 453 extend toward the cylindrical inner wall. The inside of the 41 and the spoiler 451'' are formed at the free end. In the embodiment shown in Fig. 13c, the turbulence air supply unit 45 is two thin tubes 454 connected to the air supply chamber 42, the thin tube 454 Extending into the interior of the cylindrical inner wall 41 and communicating with an annular capillary 455 at the free end, the annular capillary 455 is provided with a plurality of spoilers 451'''.

Figures 7, 8, and 9 show another embodiment of the present invention. The first difference between this embodiment and the preferred embodiment is the burner 30. The blast zone 33 is not in direct communication with the blower chamber 42 of the air supply unit 40, but is connected to the blower 51, respectively. The second difference is that the auxiliary equipment unit 20 contains electrical equipment 50 There is also a fuel delivery mechanism 60. The fuel delivery mechanism 60 includes a hopper 61 having a lower discharge port 611, one end and a discharge port 611 below the hopper 61. A feed cylinder 62 that extends into the combustion zone 32 at the other end and a rotatable fuel auger rod 63 that is rotatably received in the feed cylinder 62. The circuit diagram of electrical equipment 50 is shown in Figure 12. Included is a blower 51 that can supply air to the blast zone 33 and the plenum chamber 42 of the burner 30, a power source 52, a power switch 53 and a power indicator light 54. And a feed motor 55 that drives the fuel auger rod 63 to rotate. The power switch 53 is mounted on the side 12 to control the power supply to the entire circuit. The switch indicator 54 is also mounted on the side. Near the power switch 53 to indicate the opening and closing state of the power switch 53. A switchable door 121 is opened on the side 12.

Cylindrical inner wall 41 The shape does not have to be a single diameter cylindrical shape as shown in the preferred embodiment, but may be any shape that is generally cylindrical, such as a wave shape, or a complex cylindrical structure like a washing machine drum. Specifically as shown in Figure 10 and Figure 11 As shown, the cylindrical inner wall 41 used in the embodiment shown in Fig. 7 is in the shape of a truncated cone whose one end is slightly larger in diameter than the other end. In addition, in this embodiment, the forward and reverse

wind deflectors

43 , 44 Each of the first opening 431 and the second opening 441 is a slit, and each slit is at an angle c to the bus bar g of the cylindrical inner wall 41, and the angle c is greater than 0 degrees and less than 45 degrees. Degree, preferably 15 degrees.

When it is necessary to stop the combustion, the user can disconnect the power switch 64, the switch indicator light 65 is off, and the feed motor 61 The rotation stops and the blower 62 stops. Without the new fuel 70 being supplied to the combustion, the fuel in the combustion zone 32 will burn out quickly, and the user can open the door 121 to clean the ash in the blast zone 33. Fuel rack The edge portion of 31 can be deflected upward at an angle to form a low ground in the middle. The low ground can gather the fuel 70 to avoid excessive combustion of the edge fuel and heat generation.

Claims

A biomass fuel stove that uses biomass fuel (70) particles and includes a body (1) that can be placed on the ground, the body (1) ) comprising a top surface (11) and a side surface (12) extending downward from the periphery of the top surface (11) toward the ground, the body (1) containing a combustion portion (10) and an auxiliary device portion ( 20); the combustion part (10) comprises a burner (30), the burner (30) has a fuel frame (31), and a combustion zone is formed above the fuel frame (31) (32) a blast zone (33) is formed below, and a plurality of ventilation holes (311) are opened in the fuel rack (31); a supplemental device (40) is arranged above the combustion zone (32); and a supplemental device (40) ) comprising a cylindrical inner wall ( 41 ) and a blower chamber ( 42 ) surrounding the outer wall of the cylindrical inner wall ( 41 ), the blast zone ( 33 ) is connected to the blower chamber ( 42 ) and passes through a supply duct ( 34) Unified supply of oxygen by a blower (51); auxiliary equipment (20) containing electrical equipment (50); electrical equipment (50) including blower (51) And a power source (52) and a power switch (53), characterized in that the cylindrical inner wall (41) of the air supplement device (40) is provided with at least one row of forward wind deflectors (43) And at least one row of reverse wind deflectors (44).

2. The biomass fuel stove according to claim 1, wherein each row of forward wind deflecting means (43) comprises a plurality of first openings (431) a first baffle is formed on the outer surface of the cylindrical inner wall (41) on the left side of each of the first openings (431) or on the right side of each of the first openings (431) ( 432 ) Each of the first baffles (432) extends in a direction of the corresponding first opening (431) and forms an angle greater than 0 degrees and less than 90 degrees with the outer surface of the cylindrical inner wall (41). Each row of reverse wind deflecting means (44) includes a plurality of second openings (441) on the outer surface of the cylindrical inner wall (41), each of the second opening (441) and the first deflector ( 432) a second baffle ( 442 ) is formed on the opposite side, and each second baffle ( 442 ) extends in the direction of the corresponding second opening ( 441 ) and is opposite to the cylindrical inner wall ( 41 ) The outer surface has an angle b greater than 0 degrees and less than 90 degrees.

3. The biomass fuel stove according to claim 1, wherein a plurality of spoiler air supply means (45) are provided on the cylindrical inner wall (41). .

4. The biomass fuel stove according to claim 2, wherein a plurality of spoiler air supply means (45) are provided on the cylindrical inner wall (41). .

5. The biomass fuel stove according to claim 3, wherein the turbulence air supply device (45) comprises a plurality of inner walls formed on the cylindrical shape (41) The spoiler hole (451).

6. The biomass fuel stove according to claim 4, wherein the turbulence air supplement device (45) comprises a plurality of inner walls formed on the cylindrical shape (41) The spoiler hole (451).

7. The biomass fuel stove according to claim 3, wherein the turbulence air supply means (45) is a thin tube connected to the air supply chamber (42) ( 452), a plurality of spoilers (451') are arranged on the thin tube (452).

8. The biomass fuel stove according to claim 4, wherein the turbulence air supply means (45) is a thin tube connected to the air supply chamber (42) ( 452), a plurality of spoilers (451') are arranged on the thin tube (452).

9. The biomass fuel stove according to claim 3, wherein the turbulence air supply means (45) is a plurality of thin tubes connected to the air supply chamber (42) ( 453), the thin tube (453) extends to the inside of the cylindrical inner wall (41) and forms a spoiler hole (451'') at the free end.

10. The biomass fuel stove according to claim 4, wherein the turbulence air supply device (45) is connected to the air supply chamber (42) The thin tube (453), the thin tube (453) extends to the inside of the cylindrical inner wall (41) and forms a spoiler (451'') at the free end.

11. The biomass fuel stove according to claim 3, wherein the turbulence air supply means (45) are two thin tubes connected to the air supply chamber (42) ( 454), the thin tube (454) extends to the inside of the cylindrical inner wall (41) and communicates with a ring-shaped thin tube (455) on the free end, and the annular thin tube (455) is provided with a plurality of spoilers ( 451''' ).

12. The biomass fuel stove according to claim 4, wherein the turbulence air supply means (45) are two thin tubes connected to the air supply chamber (42) ( 454), the thin tube (454) extends to the inside of the cylindrical inner wall (41) and communicates with a ring-shaped thin tube (455) on the free end, and the annular thin tube (455) is provided with a plurality of spoilers ( 451''' ).

13. A biomass fuel stove using biomass fuel (70) particles and comprising a body (1) that can be placed on the ground, the body (1) ) comprising a top surface (11) and a side surface (12) extending downward from the periphery of the top surface (11) toward the ground, the body (1) containing a combustion portion (10) and an auxiliary device portion ( 20); the combustion part (10) comprises a burner (30), the burner (30) has a fuel frame (31), and a combustion zone is formed above the fuel frame (31) (32) a blast zone (33) is formed below, and a plurality of ventilation holes (311) are opened in the fuel rack (31); a supplemental device (40) is arranged above the combustion zone (32); and a supplemental device (40) Included is a cylindrical inner wall (41) and a blower chamber (42) surrounding the outer wall (41) of the cylinder, the blast zone (33) and the blower chamber (42) are both connected to a blower providing oxygen supply ( 51); the auxiliary equipment part (20) houses the electrical equipment (50) and the fuel delivery mechanism (60); the fuel delivery mechanism (60) includes a lower discharge opening (611) a hopper (61), a feed cylinder (62) having one end connected to the discharge port (611) of the hopper (61) and the other end extending into the combustion zone (32), and a rotatably contained in the feed cylinder ( 62) a fuel auger rod (63); the electrical device (50) includes a blower (51), a power source (52), a power switch (53), and A feeding motor (55) for driving the fuel auger rod (63) to rotate, wherein the cylindrical inner wall (41) of the air supplementing device (40) is provided with at least one row of positive wind deflecting means (43) And at least one row of reverse wind deflectors (44).

14. The biomass fuel stove according to claim 13, wherein each row of forward wind deflecting means (43) comprises a plurality of first openings (431) a first baffle is formed on the outer surface of the cylindrical inner wall (41) on the left side of each of the first openings (431) or on the right side of each of the first openings (431) ( 432 ) Each of the first baffles (432) extends in a direction of the corresponding first opening (431) and forms an angle greater than 0 degrees and less than 90 degrees with the outer surface of the cylindrical inner wall (41). Each row of reverse wind deflecting means (44) includes a plurality of second openings (441) on the outer surface of the cylindrical inner wall (41), each of the second opening (441) and the first deflector ( 432) a second baffle ( 442 ) is formed on the opposite side, and each second baffle ( 442 ) extends in the direction of the corresponding second opening ( 441 ) and is opposite to the cylindrical inner wall ( 41 ) The outer surface has an angle b greater than 0 degrees and less than 90 degrees.

15. The biomass fuel stove according to claim 13, wherein a plurality of spoiler air supply means (45) are provided on the cylindrical inner wall (41). .

16. The biomass fuel stove according to claim 14, wherein a plurality of spoiler air supply means (45) are provided on the cylindrical inner wall (41). .

17. The biomass fuel stove according to claim 15, wherein the turbulence air supply device (45) comprises a plurality of inner walls formed on the cylindrical shape (41) Through hole (451).

18. The biomass fuel stove according to claim 16, wherein the turbulence air supplement device (45) comprises a plurality of inner walls formed on the cylindrical shape (41) Through hole (451).

19. The biomass fuel stove according to claim 15, wherein the turbulence air supply device (45) is a communication to the air supply chamber (42) The thin tube (452) and the thin tube (452) are provided with a plurality of spoilers (451').

20. The biomass fuel stove according to claim 16, wherein the turbulence air supply device (45) is a communication to the air supply chamber (42). The thin tube (452) and the thin tube (452) are provided with a plurality of spoilers (451').

The biomass fuel stove according to claim 15, wherein the turbulence air supply device (45) is connected to the air supply chamber (42). The thin tube (453), the thin tube (453) extends to the inside of the cylindrical inner wall (41) and forms a spoiler (451'') at the free end.

22. The biomass fuel stove according to claim 16, wherein the turbulence air supply device (45) is connected to the air supply chamber (42). The thin tube (453), the thin tube (453) extends to the inside of the cylindrical inner wall (41) and forms a spoiler (451'') at the free end.

23. The biomass fuel stove according to claim 15, wherein the turbulence air supply device (45) is connected to the air supply chamber (42). a thin tube (454), a thin tube (454) extending toward the inside of the cylindrical inner wall (41) and communicating with a ring-shaped narrow tube (455) at the free end, the annular thin tube (455) There are a plurality of spoilers (451''') on the upper opening.

24. The biomass fuel stove according to claim 16, wherein the turbulence air supply device (45) is connected to the air supply chamber (42). a thin tube (454), a thin tube (454) extending toward the inside of the cylindrical inner wall (41) and communicating with a ring-shaped narrow tube (455) at the free end, the annular thin tube (455) There are a plurality of spoilers (451''') on the upper opening.