Combustion device

Abstract

The present invention provides a combustion device capable of efficiently performing primary combustion of waste by managing unburned gas via a simple control. A combustion chamber (7) has: a combustion chamber floor part (51), a combustion chamber side wall (53) and a combustion chamber ceiling (55); a gas supply pipe (57) for sending combustion chamber (7) supply gas, which is a gas to be sent into the combustion chamber; a combustion chamber introduction part (61) for introducing a gas including unburned gas into the combustion chamber interior space; and a discharge passage (63) through which combustion gas, which is obtained by mixing and combusting the unburned gas and the combustion chamber supply gas inside the combustion chamber interior space, is discharged. Therein, the gas supply pipe (57) is a cylindrical main body section (65) having a circular or elliptical cross section inside the combustion chamber interior space, and has a hole group comprising a plurality of holes. A combustion device (1) includes said combustion chamber (7).

Description

Combustion equipment

[0001] The present invention relates to a combustion device.

[0002] Combustion devices for burning waste materials are known. The combustion devices include a plurality of combustion chambers and paths connecting the combustion chambers. The combustion devices heat combustion gases to high temperatures while burning the waste materials, thereby preventing harmful gases from being released into the atmosphere (see, for example, Patent Documents 1, 2, and 3).

[0003] Japanese Patent Laid-Open No. 7-229610 Japanese Patent Laid-Open No. 2019-020055 Japanese Patent Laid-Open No. 2021-063600

[0004] What is needed is a combustion chamber that can efficiently burn unburned gases, and a combustion device that can improve combustion efficiency, detoxify waste, and process waste while meeting environmental standards.

[0005] The above problem can be solved, for example, by providing a gas supply pipe having a cylindrical main body with a group of holes, which are multiple holes, and diffusing the gas from the outside while introducing it from the top to the bottom of the combustion chamber.

[0006] One of the inventions described in this specification relates to a combustion chamber 7. The combustion chamber 7 has a combustion chamber bottom 51, a combustion chamber sidewall 53, and a combustion chamber ceiling 55. The combustion chamber bottom 51, the combustion chamber sidewall 53, and the combustion chamber ceiling 55 form an inner combustion chamber space, which is a space enclosed by these. The combustion chamber 7 further has a gas supply pipe 57 for supplying a supply gas to the combustion chamber 7, which is a gas sent to the combustion chamber, a combustion chamber inlet 61 for introducing a gas including unburned gas into the combustion chamber space, and an exhaust path 63 for discharging the combustion gas obtained by mixing the unburned gas and the supply gas to the combustion chamber and then burning it in the combustion chamber space. The gas supply pipe 57 has a cylindrical main body 65 with a circular or elliptical cross section inside the combustion chamber space, which has a group of holes.

[0007] The hole group is preferably one in which the plurality of holes constituting the hole group are arranged at an angle of 10° to 80° relative to the central axis of the cylindrical main body 65. It is preferable that each hole constituting the hole group is arranged so that as the angle formed with the central axis of the cylindrical main body 65 increases by a predetermined angle, the position of the hole is shifted a predetermined distance in the longitudinal direction of the cylindrical main body 65. The combustion chamber 7 preferably has a plurality of hooks 81 on the outer surface of the side wall 53 of the combustion chamber. The cylindrical main body 65 preferably also has a lid with a plurality of holes at its bottom. The cylindrical main body 65 preferably has a plurality of lower protrusions 87 in its lower region, and the combustion chamber supply gas supplied to the cylindrical main body 65 is preferably released into the combustion chamber space from the lower protrusions 87.

[0008] The next invention described in this specification relates to a combustion device 1 including the above-mentioned combustion chamber 7. Such a combustion device 1 is a combustion device 1 including as a tertiary combustion chamber 7, a primary combustion chamber 3 and a secondary combustion chamber 5 connected to the primary combustion chamber 3, and the secondary combustion chamber 5 is preferably connected to the tertiary combustion chamber 7. The bottom 51, side wall 53, ceiling 55, and introduction section 61 of the combustion chamber are the bottom 51 of the tertiary combustion chamber, the side wall 53 of the tertiary combustion chamber, the ceiling 55 of the tertiary combustion chamber, and the introduction section 61 of the tertiary combustion chamber, respectively; the combustion chamber space is the tertiary combustion chamber space; the gas including unburned gas is secondary combustion gas; the combustion gas is tertiary combustion gas; and the group of holes is a third group of holes.

[0009] The primary combustion chamber 3 has a bottom 11, a sidewall 13, and a ceiling 15. The bottom 11, sidewall 13, and ceiling 15 of the primary combustion chamber define a primary combustion chamber space. The primary combustion chamber 3 also has a primary combustion chamber outlet 17 that allows gas to be transported to the secondary combustion chamber, and a blower pipe 19 that is provided in the primary combustion chamber space and has a first group of holes. The primary combustion chamber 3 discharges primary combustion gas obtained by burning the first waste from the outlet of the primary combustion chamber. The secondary combustion chamber 5 includes a central connecting pipe 31 that connects the outlet 17 of the primary combustion chamber with the tertiary combustion chamber 7, and a secondary combustion chamber housing 33 that surrounds the exterior of the central connecting pipe 31. The central connecting pipe 31 is provided with a second group of holes. In the secondary combustion chamber 5, the gas supplied to the secondary combustion chamber housing 33 is sent into the central connecting pipe 31 through the second group of holes, and the secondary combustion gas, which is a mixture of the primary combustion gas and the gas supplied to the secondary combustion chamber, is led from the central connecting pipe 31 to the tertiary combustion chamber 7.

[0010] According to this invention, it is possible to provide a combustion chamber that can efficiently burn unburned gas, and also to provide a combustion device that can improve combustion efficiency, detoxify waste, and process waste while satisfying environmental standards.

[0011] FIG. 1 is a conceptual diagram showing an example of the configuration of a combustion device. FIG. 2 is a conceptual diagram showing an example of a primary combustion chamber. FIG. 3 is a conceptual diagram showing an example of a cross-section of a primary combustion chamber. FIG. 4 is a conceptual diagram showing an example of an air supply pipe. FIG. 4(a) is a conceptual diagram showing an example of the installation of the air supply pipe. FIG. 4(b) is a diagram showing an example of the cross-section of the air supply pipe. FIG. 4(c) is a diagram showing an example of the design of the air supply pipe. FIG. 5 is a conceptual diagram showing an example of the installation of the air supply pipe. FIG. 6 is a conceptual diagram showing an example of a secondary combustion chamber. FIG. 6(a) shows an overall view of the secondary combustion chamber. FIG. 6(b) shows a cross-section of the secondary combustion chamber. FIG. 7 is a conceptual diagram showing an example of the housing of the secondary combustion chamber. FIG. 7(a) shows a top view of the housing of the secondary combustion chamber. FIG. 7(b) is a cross-section taken along line B-B of FIG. 7(a). FIG. 7(c) is a side view of the secondary combustion chamber. FIG. 8 is a conceptual diagram showing the central connecting pipe of the secondary combustion chamber. 8(a) is a longitudinal cross-sectional view of the central connecting pipe of the secondary combustion chamber (cross-sectional view A-A in FIG. 7(a)). FIG. 8(b) is a conceptual diagram of the central connecting pipe of the secondary combustion chamber. FIG. 8(c) is an example of a design drawing of the central connecting pipe of the secondary combustion chamber. FIG. 8(d) is a cross-sectional view of the central connecting pipe of the secondary combustion chamber. FIG. 9 is a conceptual diagram showing an example of the appearance of the tertiary combustion chamber. FIG. 9(a) shows an external view of the tertiary combustion chamber. FIG. 9(b) shows a top view of the tertiary combustion chamber. FIG. 9(c) shows a cross-sectional view of the tertiary combustion chamber (cross-sectional view A-A in FIG. 9(b)). FIG. 9(d) shows a front view of the tertiary combustion chamber. FIG. 9(e) shows a right side view of the tertiary combustion chamber. FIG. 10 is a conceptual diagram for explaining the support section. FIG. 10(a) is a conceptual diagram showing the appearance of the support section. FIG. 10(b) is a view (top view) of the support section seen from above. Figure 10(b) is a cross-sectional view of the support part (cross-sectional view A-A in Figure 10(b)). Figure 10(d) shows a front view of the support part. Figure 11 is a conceptual diagram for explaining the main body part inside the tertiary combustion chamber. Figure 12 is a conceptual diagram for explaining an example of a cylindrical main body part. Figure 12(a) is a diagram showing the appearance of the cylindrical main body part. Figure 12(b) is a diagram showing the cylindrical part of the cylindrical main body part. Figure 12(c) is a diagram showing a cross-section of the cylindrical main body part. Figure 13 is a photograph in place of a drawing showing the combustion device in the example. Figure 13(a) is a front photograph of the combustion device. Figure 13(b) is a photograph of the combustion device taken from a different angle than Figure 13(a).

[0012] The following describes embodiments of the present invention with reference to the drawings. The present invention is not limited to the embodiments described below, but also includes appropriate modifications of the embodiments that are obvious to those skilled in the art.

[0013] Combustion Apparatus 1 FIG. 1 is a conceptual diagram showing an example of the configuration of a combustion apparatus. As shown in FIG. 1, the combustion apparatus 1 includes, for example, a primary combustion chamber 3, a secondary combustion chamber 5 connected to the primary combustion chamber 3, and a tertiary combustion chamber 7 connected to the secondary combustion chamber 5. In this example, the combustion apparatus 1 has three combustion chambers. However, the combustion apparatus 1 may include any one of the combustion chambers, or may include additional combustion chambers. Below, an example of the present invention will be described based on the combustion apparatus 1 including the primary combustion chamber 3, the secondary combustion chamber 5, and the tertiary combustion chamber 7. The combustion apparatus 1 can basically form a closed system, and each element is capable of exchanging gases.

[0014] This combustion device 1 includes a primary combustion chamber 3, a secondary combustion chamber 5 connected to the primary combustion chamber 3, and a tertiary combustion chamber 7 connected to the secondary combustion chamber 5. The primary combustion chamber 3 has a bottom 11, a sidewall 13, and a ceiling 15. The bottom 11, the sidewall 13, and the ceiling 15 of the primary combustion chamber define a primary combustion chamber space, which is a space enclosed by these components. The primary combustion chamber 3 has a primary combustion chamber outlet 17 that allows gas to be transported to the secondary combustion chamber, and a blower pipe 19 that is provided in the primary combustion chamber space and has a first group of holes that are a plurality of holes. The primary combustion chamber 3 outputs primary combustion gas obtained by burning the first waste from the primary combustion chamber outlet 17 to the secondary combustion chamber 5.

[0015] The secondary combustion chamber 5 includes a central connecting pipe 31 connecting the primary combustion chamber outlet 17 and the tertiary combustion chamber 7, and a secondary combustion chamber housing 33 surrounding the exterior of the central connecting pipe 31. The central connecting pipe 31 is provided with a second group of holes. Gas supplied to the secondary combustion chamber housing 33, i.e., gas supplied to the secondary combustion chamber, is supplied into the central connecting pipe 31 through the second group of holes. The primary combustion gas and the secondary combustion chamber supply gas are mixed to form secondary combustion gas. After mixing, the primary combustion gas and the secondary combustion chamber supply gas may be combusted. The secondary combustion gas thus obtained is discharged from the central connecting pipe 31 to the tertiary combustion chamber 7.

[0016] The tertiary combustion chamber 7 has a tertiary combustion chamber bottom 51, a tertiary combustion chamber sidewall 53, and a tertiary combustion chamber ceiling 55. The tertiary combustion chamber bottom 51, the tertiary combustion chamber sidewall 53, and the tertiary combustion chamber ceiling 55 form a tertiary combustion chamber space, which is the space enclosed by these. The tertiary combustion chamber 7 has a gas supply pipe 57 for sending tertiary combustion chamber supply gas, which is gas sent into the tertiary combustion chamber, a tertiary combustion chamber inlet 61 for introducing secondary combustion gas into the tertiary combustion chamber space, and an exhaust path 63. In the tertiary combustion chamber space, the secondary combustion gas and the tertiary combustion chamber supply gas are mixed and then combusted. The exhaust path 63 is an element for discharging the tertiary combustion gas obtained in this manner.

[0017] In the combustion device 1, waste (first waste) is burned in the primary combustion chamber 3. A combustion gas (primary combustion gas) containing unburned components such as carbon monoxide and hydrocarbons and air is generated in the primary combustion chamber 3. The primary combustion gas is introduced into the secondary combustion chamber 5. In the secondary combustion chamber 5, the primary combustion gas is mixed with an oxygen-containing gas, or mixed with an oxygen-containing gas and then subjected to secondary combustion. In this manner, a secondary combustion gas is obtained. The secondary combustion gas is introduced into the tertiary combustion chamber 7. In the tertiary combustion chamber 7, the secondary combustion gas is mixed with an oxygen-containing gas, then combusted and discharged. This allows the combustion device 1 to, for example, detoxify the waste and process it while complying with environmental standards. Examples of waste include waste tires, waste plastics, waste oil, and combustible waste. This combustion device 1 can preferably process waste tires, waste plastics, and waste oil. Each element of the combustion device 1 will be described in detail below.

[0018] Primary combustion chamber 3 The primary combustion chamber 3 is an element for primary combustion of waste. When waste is burned in the primary combustion chamber 3, unburned gas (combustion gas containing unburned gas generated by incomplete combustion) is generated. If the amount (and composition) of this unburned gas is constant, it is easy to control the unburned gas. It is desirable that the primary combustion chamber 3 stabilizes the amount (and composition) of unburned gas contained in the combustion gas by a simple means.

[0019] FIG. 2 is a conceptual diagram showing an example of a primary combustion chamber. FIG. 3 is a conceptual diagram showing an example of a cross-sectional view of a primary combustion chamber. As shown in FIGS. 2 and 3 , the primary combustion chamber 3 has a bottom 11, a sidewall 13, and a ceiling 15. The primary combustion chamber 3 has an internal space surrounded by the bottom 11, the sidewall 13, and the ceiling 15. The primary combustion chamber 3 further has a primary combustion chamber outlet 17 and a blower pipe 19. The primary combustion chamber outlet 17 is an element that enables gas to be discharged from the internal space of the primary combustion chamber to the outside (outside the primary combustion chamber 3). When the combustion device 1 has a secondary combustion chamber 5 connected to the primary combustion chamber 3, the primary combustion chamber outlet 17 is an element that discharges combustion gas in the internal space of the primary combustion chamber to the secondary combustion chamber 5. As shown in Figure 2, the primary combustion chamber 3 may have a first inlet 21. As shown in Figure 3, the lower part of the side wall 13 of the primary combustion chamber preferably has an inclined wall 23. The material and size of the primary combustion chamber may be adjusted appropriately depending on the waste. An example of the volume of the space inside the primary combustion chamber is 1 x 10 m. ３ 1x10 or more ４ m ３ is less than or equal to 1×10 ２ m ３ 5x10 or more ３ m ３ Less than 5 x 10 ２ m ３ 3x10 or more ３ m ３ The primary combustion chamber 3 may have an intake port (not shown). The primary combustion chamber 3 may have a fuel supply unit (not shown) for supplying fuel into the primary combustion chamber.

[0020] First input port 21 The first input port 21 is an element for opening and closing the primary combustion chamber 3. When the first input port 21 is in an open state, waste can be input into the space inside the primary combustion chamber. Normally, waste is combusted in the primary combustion chamber 3 with the first input port 21 closed. An example of the first input port 21 is an openable and closable door. The first input port 21 may be configured so that additional waste can be input into the primary combustion chamber 3 even when the primary combustion chamber 3 is currently combusting waste.

[0021] Primary Combustion Chamber Outlet Portion 17 The primary combustion chamber outlet portion 17 may be, for example, a hole provided in the sidewall 13 of the primary combustion chamber, or a conduit connected to a hole in the sidewall 13 of the primary combustion chamber. The center of the primary combustion chamber outlet portion 17 is preferably located at a position between 15% and 45% (preferably between 20% and 40%, more preferably between 25% and 35%) of the height of the sidewall of the primary combustion chamber (from the bottom to the ceiling of the primary combustion chamber). The position of the primary combustion chamber outlet portion 17 may be movable (adjustable) within the above range. The center of the primary combustion chamber outlet portion 17 refers to the center of gravity of the primary combustion chamber outlet portion 17. For example, if the primary combustion chamber outlet portion 17 is a circular hole, it refers to the center of the circle. Through extensive trial and error, it was found that the primary combustion gas extraction portion is preferably located slightly below the center of the primary combustion chamber. The temperature inside the combustion chamber is highest at the top. For this reason, combustion gas is usually taken out from the top of the combustion chamber, but in this preferred primary combustion chamber 3, the outlet 17 is provided slightly below the center of the side wall 13 of the primary combustion chamber, so that unburned gas can be stably discharged.

[0022] The air blast pipe 19 is an element provided in the primary combustion chamber interior space and has a first group of holes. The air blast pipe 19 guides gas from the first group of holes to the primary combustion chamber interior space. In the example of Figure 3, two pipes with holes function as the air blast pipe 19.

[0023] FIG. 4 is a conceptual diagram showing an example of an air supply pipe. FIG. 4(a) is a conceptual diagram showing an example of an installation of the air supply pipe. FIG. 4(b) is a diagram showing an example of a cross-sectional view of the air supply pipe. FIG. 4(c) is a diagram showing an example of an air supply pipe design. As shown in FIG. 4(a), the air supply pipe 19 is preferably located below the outlet portion 17 of the primary combustion chamber and away from the bottom 11 of the primary combustion chamber. However, since the efficiency of primary combustion is improved when the air supply pipe 19 is not far from the bottom 11 of the primary combustion chamber, the air supply pipe 19 does not have to be far from the bottom 11 of the primary combustion chamber. If the air supply pipe 19 is located away from the bottom 11 of the primary combustion chamber, it becomes easier to remove residue at the bottom and clean the primary combustion chamber 3. In the example of FIG. 4(a), the air supply pipe 19 is cylindrical. However, the shape of the air supply pipe 19 is not limited to a cylindrical shape. The air supply pipe 19 has a first group of holes. In the example shown in FIG. 4(b), holes are provided on the top, bottom, left, and right sides of the air blower pipe 19. However, theoretical calculations of the air blower pipe 19 revealed that providing holes on three sides (top, bottom, left, and right) of the air blower pipe 19 is preferable because it increases combustion efficiency. In this case, the left and right holes may be offset from the upper hole by 90°, 60° to 120°, 60° to 90°, 75° to 105°, or 75° to 90°. The holes are preferably circular or elliptical. The diameter of the holes (the length of the major axis if the holes are elliptical; the same applies below) is, for example, 1 mm to 1 cm, 2 mm to 6 mm, or 3 mm to 5 mm. In the example shown in FIG. 4(c), the holes are provided at 5 cm intervals along the longitudinal direction of the air blower pipe. This distance may be 5 mm to 50 cm, 3 cm to 25 cm, 2 cm to 20 cm, or 3 cm to 10 cm. The diameter of the upper holes of the air supply pipe 19 may be 1.1 to 5 times, 1.2 to 3 times, 1.5 to 3 times, or 1.5 to 2 times the diameter of the lower holes. By reducing the size of the lower holes in this way, gas can be effectively sent into the primary combustion chamber.Furthermore, the left and right holes may be positioned above the center of the pipe, and the diameters of the left and right holes may be 1.1 to 5 times, 1.2 to 3 times, 1.5 to 3 times, or 1.5 to 2 times the diameter of the lower hole.

[0024] FIG. 5 is a conceptual diagram showing an example of the installation of an air supply pipe. FIG. 5( a) is a diagram showing the lower region of the primary combustion chamber 3. FIG. 5( b) is a diagram showing a side view of the primary combustion chamber 3. As shown in FIG. 5, the air supply pipe 19 preferably has a valve 25 (air volume adjustment mechanism) provided outside the primary combustion chamber to adjust the air volume. The piping may be connected by an appropriate flange. In the example shown in FIG. 5, the air supply pipe 19 is connected to a first gas introduction passage 29 (e.g., a pipe) connected to a first gas supply unit 27 (not shown) via the valve 25. Examples of the first gas supply unit 27 include a blower and a compressor. The first gas supply unit 27 preferably has a heating mechanism. If the first gas supply unit 27 has a heating mechanism, heated outside air can be introduced into the air supply pipe 19. The heating mechanism may be provided in the first gas introduction passage 29. The outside air preferably contains oxygen. The first gas supply unit 27 may have an open end. In this case, the first gas supply unit 27 functions as an intake port. The primary combustion chamber 3 may have an appropriate intake port. The amount of gas supplied into the primary combustion chamber 3 can be appropriately adjusted by the valve (gate) 25. This combustion device can control the amount and composition of unburned gas discharged from the primary combustion chamber by adjusting the amount of gas supplied into the primary combustion chamber 3 using the valve 25. One factor that makes this control possible is the different position of the discharge unit 17 of the primary combustion chamber from conventional devices. The first gas supply unit 27 may supply a gas other than outside air (e.g., oxygen) to the primary combustion chamber 3. Note that the amount of air supplied to the primary combustion chamber 3 may be adjusted using a known air amount adjustment mechanism other than the valve 25.

[0025] 3, the lower part of the side wall 13 of the primary combustion chamber preferably has an inclined wall 23. For example, the angle between the bottom 11 of the primary combustion chamber and the inclined wall 23 is preferably 45° to 80°, and may be 55° to 70°. Because the primary combustion chamber 3 has the inclined wall 23, the waste is placed near the blower pipe 19, allowing the waste to be burned efficiently.

[0026] Operation example of the primary combustion chamber 3 The first inlet 21 is opened to an open state. Then, waste is introduced into the space inside the primary combustion chamber through the first inlet 21. The waste is ignited, and the first inlet 21 is closed to a closed state. Note that fuel may be supplied along with the waste, and the fuel may be ignited. The first gas supply unit 27 heats outside air and sends it to the air supply pipe 19 via the first gas introduction path 29. For example, the temperature of the heated outside air may be 30°C or higher and 60°C or lower, or 30°C or higher and 50°C or lower. The amount of air supplied by the first gas supply unit 27 may be adjusted as appropriate, and may be 0.01 m ３ / min or more 10m ３ / min or less, or 0.1m ３ / min or more 1m ３ / min or less, or 0.1m ３ / min or more 0.5m ３ / min or less. The airflow discharged from the air blower pipe 19 is preferably a laminar flow. The waste is burned, and the combustion gas (gas including unburned gas) becomes stable when the temperature reaches, for example, 150°C to 300°C.

[0027] In a preferred example of the primary combustion chamber 3, the outlet 17 is provided slightly below the center of the primary combustion chamber, allowing for stable discharge of unburned gas. For example, when tires are waste, one tire can typically be incinerated in about 15 minutes. The primary combustion chamber 3 burns the tire for, for example, 0.5 to 5 hours (preferably 1 to 3 hours) per tire. This example of the combustion device has the advantage that the amount and composition of unburned gas contained in the combustion gas (primary combustion gas) discharged from the primary combustion chamber can be controlled by adjusting the amount of gas supplied into the primary combustion chamber 3 using the valve 25. The combustion gas is discharged from the primary combustion chamber space to the outside via the outlet 17 of the primary combustion chamber. When the combustion device 1 has a secondary combustion chamber 5 connected to the primary combustion chamber 3, the primary combustion gas in the primary combustion chamber space is discharged to the secondary combustion chamber 5 via the outlet 17 of the primary combustion chamber. A preferred example of the primary combustion chamber 3 is one in which the position of the outlet 17 of the primary combustion chamber is adjusted to have a shape that allows a constant amount of gas to be discharged, thereby stably generating unburned gas (primary combustion gas), and further, the amount of unburned gas can be controlled solely by the amount of air supplied.

[0028] The primary combustion chamber 3 can be used as a heat source or a heating device. By connecting a pipe to the periphery of the primary combustion chamber 3, it can be used for heating. Also, by connecting a pipe containing a liquid to the primary combustion chamber 3, it can be used for heating.

[0029] Secondary Combustion Chamber 5 The secondary combustion chamber 5 is a combustion chamber connected to the primary combustion chamber 3. The secondary combustion chamber 5 is an element for mixing the primary combustion gas (including unreacted gas) discharged from the primary combustion chamber with a gas containing oxygen, or for secondary combustion of the primary combustion gas after mixing with a gas. The secondary combustion chamber 5 is preferably connected to the tertiary combustion chamber 7. The primary combustion gas combusted in the secondary combustion chamber 5 is discharged to the tertiary combustion chamber 7 as secondary combustion gas. Note that the state in which the primary combustion gas is mixed with a gas containing oxygen is also included in the combustion of the primary combustion gas. The primary combustion gas is a highly concentrated unburned gas. Therefore, if the primary combustion gas is directly burned, unburned gas is likely to remain. Therefore, the secondary combustion chamber 5 aims to supply oxygen to the primary combustion gas to convert it into a gas (secondary combustion gas) that is easily combusted.

[0030] Figure 6 is a conceptual diagram showing an example of a secondary combustion chamber. Figure 6(a) shows an overall view of the secondary combustion chamber. Figure 6(b) shows a cross-sectional view of the secondary combustion chamber. As shown in Figure 6, the secondary combustion chamber 5 includes a central connecting pipe 31 and a secondary combustion chamber housing 33 that surrounds the outside of the central connecting pipe 31. In the example shown in Figure 6, the secondary combustion chamber has a double structure of two conduits. In the example shown in Figure 6, the secondary combustion chamber 5 is installed laterally (at the same height) as the primary combustion chamber 3.

[0031] Secondary Combustion Chamber Housing 33 FIG. 7 is a conceptual diagram showing an example of a secondary combustion chamber housing. FIG. 7(a) shows a top view of the secondary combustion chamber housing. FIG. 7(b) is a cross-sectional view taken along line B-B of FIG. 7(a). FIG. 7(c) is a side view of the secondary combustion chamber. The secondary combustion chamber housing 33 is preferably connected to a second gas introduction passage 37 (e.g., a pipe) connected to a second gas supply unit 35. Examples of the second gas supply unit 35 include a blower and a compressor. The gas supplied from the second gas supply unit 35 is introduced into the secondary combustion chamber housing 33 via the second gas introduction passage 37. The second gas supply unit 35 preferably includes a heating mechanism. If the second gas supply unit 35 includes a heating mechanism, heated outside air can be introduced into the secondary combustion chamber housing 33. The heating mechanism may be provided in the second gas introduction passage 37. The second gas supply unit 35 may supply a gas other than outside air (e.g., oxygen). A valve (gate) 39 may be provided between the second gas introduction passage 37 and the second gas supply unit 35. The valve 39 allows the amount of gas supplied into the secondary combustion chamber 5 to be appropriately adjusted. In this combustion device, the amount of gas supplied into the secondary combustion chamber 5 can be adjusted using the valve 39. Note that the amount of air supplied to the secondary combustion chamber 5 may also be adjusted using a known air amount adjustment mechanism other than the valve 39. Both ends of the secondary combustion chamber housing 33 are designed to be located inside the connecting portions located in the end regions of the central connecting pipe 31. This prevents the gas introduced from the second gas supply unit 35 from leaking outside the secondary combustion chamber housing 33. The secondary combustion chamber housing 33 preferably has a cylindrical main body with the second gas introduction passage 37 branching off and connected to a portion of the side surface. The diameter of the secondary combustion chamber housing 33 is, for example, 80 mm to 500 mm, or may be 40 mm to 300 mm, 100 mm to 300 mm, or 80 mm to 200 mm. The longitudinal length of the secondary combustion chamber housing 33 may be 50 mm to 800 mm, or may be 50 mm to 800 mm, or may be 100 mm to 600 mm, or may be 200 mm to 600 mm, or may be 150 mm to 500 mm.

[0032] Central Connecting Pipe 31 FIG. 8 is a conceptual diagram showing the central connecting pipe of the secondary combustion chamber. FIG. 8(a) is a longitudinal cross-sectional view of the central connecting pipe of the secondary combustion chamber (cross-sectional view taken along line A-A in FIG. 7(a)). FIG. 8(b) is a conceptual diagram of the central connecting pipe of the secondary combustion chamber. FIG. 8(c) is an example of a design drawing of the central connecting pipe of the secondary combustion chamber. FIG. 8(d) is a cross-sectional view of the central connecting pipe of the secondary combustion chamber. The central connecting pipe 31 is, for example, an element for connecting the outlet 17 of the primary combustion chamber to the tertiary combustion chamber. The central connecting pipe 31 is provided with a plurality of holes (a second group of holes) for introducing gas from the housing 33 of the secondary combustion chamber into the central connecting pipe 31. In the example shown in FIG. 8(a), a connection portion 41 with the outlet 17 of the primary combustion chamber 3 is located at the left end of the central connecting pipe 31. In the example shown in FIG. 8( a ), the right end of the central connecting pipe 31 has a connecting portion 43 with the tertiary combustion chamber 7 (inlet portion 61 ).

[0033] The second group of holes is preferably arranged so that the airflow into the central connecting pipe 31 forms a spiral (toward the tertiary combustion chamber 7). For example, the direction from the outer wall to the inner wall of each of the holes constituting the second group of holes may be from left to right in the drawing (from the primary combustion chamber 3 side to the tertiary combustion chamber 7 side). The diameter of the holes may be, for example, 1 mm to 1 cm, or 2 mm to 6 mm. Furthermore, as shown in FIGS. 8( b) and 8(c), the second group of holes may be arranged in the upper, lower, left, and right regions of the central connecting pipe 31. In this example, when the angle (θ) between the central axis of the central connecting pipe 31 and the holes increases by a predetermined angle (90°), the position of the holes shifts by a predetermined distance (for example, 3 mm to 3 cm, 5 mm to 2 cm) in the longitudinal direction of the central connecting pipe 31. In other words, each hole constituting the second group of holes is positioned at a predetermined distance in the longitudinal direction of the central connecting pipe 31 when the angle between the hole and the central axis of the central connecting pipe 31 increases by a predetermined angle. The positions of the holes are such that, when adjacent holes are smoothly connected to each other, a spiral shape is formed. In this way, the airflow into the central connecting pipe 31 moves in a spiral pattern.

[0034] As shown in FIG. 8(d), the second group of holes is preferably such that the plurality of holes constituting the second group of holes are arranged at an angle relative to the central axis of the central connecting pipe 31. A perpendicular line is drawn from the center of each hole to the central axis of the central connecting pipe 31. Next, the central axis of each hole (the longitudinal direction of the hole (the direction of travel of the hole)) is drawn. The angle (θ) between this perpendicular line and the central axis is the angle the hole makes with the central axis of the central connecting pipe 31. In the example of FIG. 4(b), this angle was 0° (although the hole shown in FIG. 4(b) may also have an angle as in FIG. 8(d)). It is preferable that the angle between the perpendicular line and the central axis of the second group of holes is an angle (other than 0°) so that the airflow into the central connecting pipe 31 describes a spiral. Specific examples of the angle are 10° to 80°, 20° to 70°, 30° to 60°, or 30° to 50°.

[0035] Operation example of the secondary combustion chamber 5 The primary combustion gas contains unburned gas with a high concentration. For this reason, the secondary combustion chamber 5 mixes gases such as oxygen with the primary combustion gas. The primary combustion gas is introduced into the central connecting pipe 31 from the outlet 17 of the primary combustion chamber. The second gas supply unit 35 heats the outside air and sends it to the housing 33 of the secondary combustion chamber via the second gas introduction path 37. The outside air may be heated. For example, the temperature of the outside air supplied from the second gas supply unit 35 may be 0°C or higher and 60°C or lower, 30°C or higher and 60°C or lower, or 30°C or higher and 50°C or lower. The amount of air supplied by the second gas supply unit 35 can be adjusted as appropriate, and may be 0.01 m ３ / min or more 10m ３ / min or less, or 0.1m ３ / min or more 1m ３ / min or less, or 0.1m ３ / min or more 0.5m ３ / min or less. The heated outside air sent from the second gas supply unit 35 passes through the secondary combustion chamber housing 33 and the second group of holes and is introduced into the central connecting pipe 31. In a preferred example, the airflow into the central connecting pipe 31 forms a spiral flow toward the tertiary combustion chamber 7. In this manner, the supply gas (oxygen or outside air) of the secondary combustion chamber, which is the gas sent to the secondary combustion chamber housing 33, is sent into the central connecting pipe 31 through the second group of holes, and becomes secondary combustion gas, which is a mixture of the primary combustion gas and the supply gas (oxygen or outside air) of the secondary combustion chamber. The secondary combustion gas is then guided from the central connecting pipe 31 to the tertiary combustion chamber. This dramatically improves the combustion efficiency in the tertiary combustion chamber.

[0036] Tertiary Combustion Chamber 7 FIG. 9 is a conceptual diagram showing an example of the appearance of a tertiary combustion chamber. FIG. 9(a) shows an external view of the tertiary combustion chamber. FIG. 9(b) shows a top view of the tertiary combustion chamber. FIG. 9(c) shows a cross-sectional view of the tertiary combustion chamber (cross-sectional view A-A in FIG. 9(b)). FIG. 9(d) shows a front view of the tertiary combustion chamber. FIG. 9(e) shows a right side view of the tertiary combustion chamber. As shown in FIG. 9, the tertiary combustion chamber 7 has a bottom 51 of the tertiary combustion chamber, a side wall 53 of the tertiary combustion chamber, and a ceiling 55 of the tertiary combustion chamber. The space surrounded by the bottom 51 of the tertiary combustion chamber, the side wall 53 of the tertiary combustion chamber, and the ceiling 55 of the tertiary combustion chamber constitutes the tertiary combustion chamber interior space. The tertiary combustion chamber 7 further has a gas supply pipe 57, a tertiary combustion chamber inlet 61, and an exhaust path 63. The gas supply pipe 57 is an element for sending the tertiary combustion chamber supply gas, which is the gas sent into the tertiary combustion chamber. The tertiary combustion chamber inlet 61 is an element for introducing the secondary combustion gas into the tertiary combustion chamber space. The exhaust path 63 is an element for discharging the tertiary combustion gas. The tertiary combustion gas is a combustion gas obtained by mixing the secondary combustion gas and the tertiary combustion chamber supply gas in the tertiary combustion chamber space and then burning them. The tertiary combustion chamber 7 may have a tertiary combustion chamber inner body 71 and a support part 73 that supports the tertiary combustion chamber inner body 71. When these parts are combined, an internal space is formed. This internal space may be the tertiary combustion chamber space. It is desirable for the tertiary combustion chamber to completely combust unburned gas. For this reason, it is desirable to improve the combustion efficiency of the tertiary combustion chamber.

[0037] Support Section 73 FIG. 10 is a conceptual diagram illustrating the support section. FIG. 10(a) is a conceptual diagram showing the appearance of the support section. FIG. 10(b) is a view of the support section from above (top view). FIG. 10(b) is a cross-sectional view of the support section (cross-sectional view A-A in FIG. 10(b)). FIG. 10(d) is a front view of the support section. As shown in FIG. 10, in this example, the inlet 61 of the tertiary combustion chamber is provided on the right side of the support section 73. In the example shown in FIG. 10, the bottom 51 of the tertiary combustion chamber has a curved shape. This is to collect fuel injected into the bottom 51 of the tertiary combustion chamber in the central region of the bottom 51 of the tertiary combustion chamber. In the example shown in FIG. 10, the support section 73 has a fuel supply section 75. In the example shown in FIG. 10, the fuel supply section 75 is located at the center of the bottom of the tertiary combustion chamber. However, the fuel supply section 75 may be provided in another position in the tertiary combustion chamber. The fuel supplied by the fuel supply unit 75 may be liquid fuel or gaseous fuel. A gas introduction unit or an intake port for introducing gas may be provided at the position of the fuel supply unit 75 (the center of the bottom of the bottom 51 of the tertiary combustion chamber).

[0038] In the example of FIG. 10 , a preliminary gas introduction section 77 for introducing gas into the support section 73 is present. The preliminary gas introduction section 77 is an optional element and may not be present. The preliminary gas introduction section 77 may also be present in the tertiary combustion chamber main body section 71. The tertiary combustion chamber main body section 71 may also be present in both the support section 73 and the tertiary combustion chamber main body section 71. The preliminary gas introduction section 77 may be connected to the gas supply pipe 57 via a valve, and gas supplied into the gas supply pipe 57 may be introduced into the tertiary combustion chamber 7 via the preliminary gas introduction section 77. The amount of gas introduced into the tertiary combustion chamber 7 from the preliminary gas introduction section 77 may be adjusted by a valve. In the example of FIG. 10 , a second input port 79 is present. The second input port 79 is an element for opening and closing the tertiary combustion chamber 7. When the second input port 79 is in an open state (open state), an object can be introduced into the third combustion chamber space. Furthermore, when the second inlet 79 is in an open state, residue present in the tertiary combustion chamber 7 can be disposed of. When the tertiary combustion chamber 7 is in a combustion state, the second inlet 79 is usually in a closed state (closed state). An example of the second inlet 79 is an openable door. With the second inlet 79 in an open state, solid fuel or liquid fuel may be introduced into the tertiary combustion chamber 7. Furthermore, with the second inlet 79 in an open state, a second waste material may be introduced into the tertiary combustion chamber 7. An example of the second waste material is waste oil.

[0039] Tertiary Combustion Chamber Main Body 71 FIG. 11 is a conceptual diagram illustrating the tertiary combustion chamber main body. As shown in FIG. 11 , the tertiary combustion chamber main body 71 includes a roughly cylindrical portion and an exhaust channel 63 located at the top of the portion. The tertiary combustion chamber main body 71 is connected to a gas supply pipe 57, so that gas supplied from the gas supply pipe 57 is introduced into the tertiary combustion chamber 7. In the example shown in FIG. 11 , the gas supply pipe 57 is introduced into the tertiary combustion chamber 7 through the top of the tertiary combustion chamber main body 71. In the example shown in FIG. 11 , multiple hooks 81 are provided on the outer surface of the tertiary combustion chamber main body 71. The tertiary combustion chamber 7 has multiple hooks 81, which makes it easier to install piping surrounding the tertiary combustion chamber main body 71. Preferably, the tertiary combustion chamber 7 has piping installed around the tertiary combustion chamber main body 71 so that the tertiary combustion chamber 7 can be cooled. The liquid in the piping heated by the tertiary combustion chamber 7 can be used for heating. The plurality of hooks 81 are preferably provided at predetermined intervals at a predetermined height on the tertiary combustion chamber inner body 71. In the example of Fig. 11, the plurality of hooks 81 are provided at 90° intervals at three different height positions on the outer periphery of the tertiary combustion chamber inner body 71.

[0040] Gas Supply Pipe 57 The gas supply pipe 57 is an element for sending the supply gas of the tertiary combustion chamber, which is the gas sent into the tertiary combustion chamber. The gas supply pipe 57 may be connected to a third gas supply unit (not shown). Examples of the third gas supply unit are a blower and a compressor. The third gas supply unit preferably has a heating mechanism. If the third gas supply unit has a heating mechanism, heated outside air can be introduced into the tertiary combustion chamber. The heating mechanism may be provided in the gas supply pipe 57. The outside air preferably contains oxygen.

[0041] As shown in FIG. 9( c), the gas supply pipe 57 has a portion that exists outside the tertiary combustion chamber 7 and is connected to the third gas supply unit. Also, as shown in FIG. 9( c), the gas supply pipe 57 has a cylindrical main body 65 that is installed vertically inside the tertiary combustion chamber 7. As shown in FIG. 9( c), the gas supply pipe 57 has a connecting portion that connects the portion of the gas supply pipe 57 that exists outside the tertiary combustion chamber 7 with the upper part of the cylindrical main body 65. In this example, the gas supplied from the third gas supply unit is introduced into the tertiary combustion chamber 7 via the gas supply pipe 57. Specifically, the gas supplied from the upper part of the cylindrical main body 65 passes through the cylindrical main body 65 and is discharged from the lower part of the cylindrical main body 65. As will be described later, when the cylindrical main body 65 has a third group of holes, the gas is introduced into the tertiary combustion chamber 7 through the third group of holes as it travels from the top to the bottom of the cylindrical main body 65. The cylindrical main body 65 preferably has a circular or elliptical cross section. The length of the cylindrical main body 65 is, for example, 40 cm to 5 m, or may be 70 cm to 3 m, or 1 m to 2 m. The diameter of the cylindrical main body 65 is, for example, 3 cm to 40 cm, or may be 5 cm to 30 cm, or may be 5 cm to 25 cm. The shape of the cylindrical main body 65 is not limited to a cylindrical shape, but is preferably cylindrical.

[0042] Cylindrical Main Body 65 FIG. 12 is a conceptual diagram illustrating an example of a cylindrical main body. FIG. 12( a) is a diagram illustrating the appearance of the cylindrical main body. FIG. 12( b) is a diagram illustrating the cylindrical portion of the cylindrical main body. FIG. 12( c) is a diagram illustrating a cross section of the cylindrical main body. In the example shown in FIG. 12( a), the cylindrical main body 65 has two handles 85 formed in its upper region. In this example, the cylindrical main body 65 also has two handles 85 formed in its middle region. Because the cylindrical main body 65 has the handles, it is easier to install the cylindrical main body 65 and to fine-tune the cylindrical main body 65 even after installation. A lid having a plurality of holes is preferably provided at the bottom of the cylindrical main body 65. The holes provided in the lid may be similar to the holes in the third group of holes. With such a lid, gas supplied to the cylindrical main body 65 is released into the tertiary combustion chamber from the lower part of the cylindrical main body 65. In the example shown in FIG. 12( a), four lower protrusions 87 are formed at 90° intervals on the lower part of the cylindrical main body 65 to adjust the airflow. The interior of the lower protrusions 87 is preferably hollow, and the side of the lower protrusions 87 is preferably provided with multiple holes. With such lower protrusions 87, gas is also released from the lower protrusions 87, thereby controlling the airflow in the tertiary combustion chamber 7. The lower protrusions 87 may be positioned offset from the handle 85 (e.g., 45° offset). The presence of the lower protrusions 87 and the handle 85 in such positions facilitates circulation of the gas released from the lower protrusions 87. This improves the combustion efficiency of the tertiary combustion chamber 7.

[0043] The third group of holes is preferably arranged so that the gas is discharged from the cylindrical main body 65 into the internal space of the tertiary combustion chamber at an angle. In other words, the gas discharged from the cylindrical main body 65 is preferably discharged into the internal space of the tertiary combustion chamber at an angle relative to the direction away from the center of the cylindrical main body 65, rather than traveling straight away from the center of the cylindrical main body 65. The diameter of the holes may be 1 mm to 1 cm, or 2 mm to 6 mm. Furthermore, as shown in FIG. 12( b), the third group of holes may be arranged in the front, rear, left, and right regions of the cylindrical main body 65. In this example, when the angle between the central axis of the cylindrical main body 65 and the holes increases by a predetermined angle (90°), the position of the holes shifts by a predetermined distance (e.g., 3 mm to 5 cm, 3 mm to 3 cm, 5 mm to 10 cm, or 5 mm to 2 cm) in the longitudinal direction of the cylindrical main body 65. In other words, each of the holes constituting the third group of holes is positioned at a predetermined distance in the longitudinal direction of the cylindrical main body 65 as the angle between the hole and the central axis of the cylindrical main body 65 increases by a predetermined angle. The positions of the holes are such that, when adjacent holes are smoothly connected, they form a spiral. In this way, the airflow of gas released from the cylindrical main body 65 into the internal space of the tertiary combustion chamber 7 swirls. This improves the combustion efficiency of the tertiary combustion chamber 7.

[0044] As shown in FIG. 12( c), the third hole group is preferably such that the plurality of holes constituting the third hole group are arranged at an angle relative to the central axis of the cylindrical main body 65. A perpendicular line is drawn from the center of each hole to the central axis of the cylindrical main body 65. Next, the central axis of each hole (the longitudinal direction of the hole (the direction of travel of the hole)) is drawn. The angle between the perpendicular line and the central axis is the angle the hole makes with the central axis of the cylindrical main body 65. The third hole group preferably has an angle (other than 0°) between the perpendicular line and the central axis so that the gas flow released from the cylindrical main body 65 swirls. Specific examples of the angle are 10° to 80°, 20° to 70°, 30° to 60°, or 30° to 50°. This improves the combustion efficiency of the tertiary combustion chamber 7.

[0045] Operation example of the tertiary combustion chamber 7 Secondary combustion gas is introduced into the tertiary combustion chamber space via the introduction part 61 of the tertiary combustion chamber. The introduction part 61 of the tertiary combustion chamber is provided at the bottom of the tertiary combustion chamber 7. Therefore, the secondary combustion gas is supplied to the bottom of the tertiary combustion chamber 7. The third gas supply part heats the supply gas (oxygen or outside air) and introduces the supply gas into the tertiary combustion chamber via the gas supply pipe 57. For example, the temperature of the supply gas may be 30°C or higher and 60°C or lower, or 30°C or higher and 50°C or lower. The amount of air supplied by the third gas supply part can be adjusted as appropriate, and is set to 0.5 m ３ / min or more 50m ３ / min or less, or 1m ３ / min or more 20m ３ / min or less, or 1m ３ / min or more 15m ３ / min or less, or 2m ３ / min or more 10m ３ / min or less. The supply gas is introduced into the tertiary combustion chamber from the cylindrical main body 65 of the gas supply pipe 57. For example, the supply gas is discharged in a swirling manner through a third group of holes provided on the side of the cylindrical main body 65. The supply gas is also discharged downward from the cylindrical main body 65 through multiple holes in a lid provided on the bottom surface of the cylindrical main body 65. The supply gas is further discharged, for example, in vertical and horizontal directions through the lower protrusion 87. In this manner, the supply gas is introduced into the tertiary combustion chamber, forming a desirable airflow. The fuel supply unit 75 supplies liquid fuel as needed into the tertiary combustion chamber. Furthermore, heated gas may be supplied to the lower part of the tertiary combustion chamber as needed. It is preferable to introduce oxygen-containing gas into the center of the fire source and cause explosive combustion at high temperatures. In this manner, the secondary combustion gas can be burned to produce tertiary combustion gas. Unburned gas can be completely burned, rendering it harmless, and waste can be treated while complying with environmental standards. The detoxified tertiary combustion gas is discharged to the outside via the exhaust path 63. Various filters may be provided in the exhaust path 63. Furthermore, a sensor may be provided in the exhaust path 63. If a sensor is provided in the exhaust path 63, various controls can be automated using machine learning. For example, such automatic control can be achieved by constructing a trained model using the supply amounts and sensing information of various supply gases as training data. The sensing information measured by the sensor is then input into the trained model. The control unit can then automatically control various supply units (e.g., gas supply units and fuel supply units) and valves to appropriately treat waste. Furthermore, the accuracy of machine learning can be improved by feeding back the processed data to the trained model.

[0046] A combustion device having primary to tertiary combustion chambers was actually manufactured. Figure 13 is a photograph in place of a drawing showing the combustion device in the example. Figure 13(a) is a front photograph of the combustion device. Figure 13(b) is a photograph of the combustion device taken from a different angle than Figure 13(a). The primary combustion chamber was shaped to extract a fixed amount of gas. This allowed for stable generation of unburned gas, and furthermore, the amount of unburned gas could be controlled using only the amount of air. The volume of the primary combustion chamber was approximately 900 m３ Two pipes are placed at the bottom of the primary combustion chamber, and holes with a diameter of about 3 mm are provided in the pipes at an appropriate distance of 50 mm, and heated air of about 40°C is introduced into the pipes at a rate of 0.2 m. ３ The fuel was burned at a speed of 100-500°C (or 150°C-350°C) at which point synthesis gas could be extracted, and extracted from the center of the primary combustion chamber where the primary combustion gas components were stable. In this way, the primary combustion gas could be extracted stably. One tire could be burned for approximately two hours.

[0047] The primary combustion gas is a dense unburned gas. Therefore, air (oxygen) was further mixed in the secondary combustion chamber. The primary combustion gas was taken out sideways. The secondary combustion chamber had a double structure, with the outer pipe:inner pipe ratio being approximately 3:2, and air was taken in from the outer pipe to the inner pipe. Heated air at approximately 40°C around the chamber was pumped in at a speed of 0.2 m. ３ The air was blown at a rate of 1 / min and gradually discharged from the holes. To create a combustible gas mixture, small holes with a diameter of about 3 mm were provided in the inner pipe at a 40 mm pitch, spirally arranged at an angle of about 40° from the center, and air at about 40°C was taken in from the outer pipe to create a secondary combustion or a mixed gas with air in the flue. In this way, a secondary combustion gas was obtained.

[0048] A round pipe descends vertically into the center of the tertiary combustion chamber, and holes with a diameter of about 3 mm are arranged in a spiral at a 50 mm pitch at an angle of about 40° to the center, allowing outside air to flow through for 4 m. ３ / min, and secondary combustion gas was taken in from below to create tertiary combustion. Air was introduced into the center of the fire source, causing it to explode and burn at high temperatures. This allowed for the complete combustion of unburned gas, neutralizing odors, smoke, and harmful components. By creating angled holes in the round pipe, resistance in the spiral direction was reduced, improving combustion efficiency.

[0049] The present invention can be used in fields such as waste treatment, boilers, and generators.

[0050] REFERENCE SIGNS LIST 1 Combustion device 3 Primary combustion chamber 5 Secondary combustion chamber 7 Tertiary combustion chamber 11 Bottom of primary combustion chamber 13 Side wall of primary combustion chamber 15 Ceiling of primary combustion chamber 17 Outlet of primary combustion chamber 19 Blow pipe 31 Central connecting pipe 33 Housing of secondary combustion chamber 51 Bottom of tertiary combustion chamber 53 Side wall of tertiary combustion chamber 55 Ceiling of tertiary combustion chamber 57 Gas supply pipe 61 Inlet of tertiary combustion chamber 63 Discharge path

Claims

1. A combustion chamber (7) having a bottom (51), a side wall (53), and a ceiling (55) of the combustion chamber, wherein the bottom (51), the side wall (53), and the ceiling (55) of the combustion chamber form an internal combustion chamber space, which is a space surrounded by these, and the combustion chamber (7) further has: a gas supply pipe (57) for sending a supply gas of the combustion chamber (7), which is a gas sent to the combustion chamber; an inlet (61) of the combustion chamber for introducing a gas containing unburned gas into the combustion chamber space; and an exhaust path (63) for discharging the combustion gas obtained by mixing the unburned gas and the supply gas of the combustion chamber (7) and burning it in the combustion chamber space, and the gas supply pipe (57) has a cylindrical main body (65) with a circular or elliptical cross section inside the combustion chamber space, which is installed vertically and has a group of holes, which are a plurality of holes, The gas supply pipe (57) has a connecting portion that connects a portion of the gas supply pipe (57) that is outside the combustion chamber (7) and an upper portion of the cylindrical main body portion (65), the combustion chamber (7) further has a fuel supply portion (75) for supplying fuel into the combustion chamber (7), and the bottom portion (51) of the combustion chamber has a curved shape so as to collect the fuel supplied from the fuel supply portion (75) in a central region of the bottom portion (51) of the combustion chamber.

2. A combustion chamber (7) as described in claim 1, wherein the group of holes is such that the plurality of holes constituting the group of holes are arranged at an angle of 10° or more and 80° or less with respect to the central axis of the cylindrical main body portion (65).

3. A combustion chamber (7) as described in claim 1, wherein each of the holes constituting the group of holes is positioned at a predetermined distance in the longitudinal direction of the cylindrical main body (65) when the angle between the hole and the central axis of the cylindrical main body (65) increases by a predetermined angle.

4. A combustion chamber (7) according to claim 1, comprising a plurality of hooks (81) on the outer surface of the side wall (53) of the combustion chamber.

5. A combustion chamber (7) according to claim 1, wherein the cylindrical body (65) has a lid with a plurality of holes at the bottom.

6. A combustion chamber (7) according to claim 1, wherein the cylindrical body portion (65) has a plurality of lower protrusions (87) in a lower region, and the combustion chamber supply gas supplied to the cylindrical body portion (65) is released from the lower protrusions (87) into the combustion chamber interior space.

7. A combustion chamber (7) according to claim 1, wherein the supply gas for the combustion chamber (7) is supplied from the top of the cylindrical body (65).

8. A combustion device (1) comprising a combustion chamber (7) according to any one of claims 1 to 7.

9. A combustion device (1) including the combustion chamber (7) according to any one of claims 1 to 7 as a tertiary combustion chamber (7), wherein the combustion device (1) includes a primary combustion chamber (3) and a secondary combustion chamber (5) connected to the primary combustion chamber (3), and the secondary combustion chamber (5) is connected to the tertiary combustion chamber (7), the bottom (51) of the combustion chamber, the side wall (53) of the combustion chamber, the ceiling (55) of the combustion chamber, and the introduction part (61) of the combustion chamber are the bottom (51) of the tertiary combustion chamber, the side wall (53) of the tertiary combustion chamber, the ceiling (55) of the tertiary combustion chamber, and the introduction part (61) of the tertiary combustion chamber, respectively, the combustion chamber space is a tertiary combustion chamber space, the gas containing unburned gas is secondary combustion gas, the combustion gas is tertiary combustion gas, the group of holes is a third group of holes, and the primary combustion chamber (3) is The combustion chamber has a bottom (11) of the primary combustion chamber, a side wall (13) of the primary combustion chamber, and a ceiling (15) of the primary combustion chamber, the bottom, the side wall, and the ceiling of the primary combustion chamber forming a primary combustion chamber inner space which is a space enclosed thereby, and further has an outlet part (17) of the primary combustion chamber which is capable of transporting gas to the secondary combustion chamber, and a blower pipe (19) provided in the primary combustion chamber space and having a first group of holes which are a plurality of holes, and the primary combustion gas obtained by burning the first waste is discharged from the outlet part of the primary combustion chamber, and the secondary combustion chamber (5) includes: a central connecting pipe (31) which connects the outlet part (17) of the primary combustion chamber with the tertiary combustion chamber (7), and a secondary combustion chamber housing (33) which surrounds the outside of the central connecting pipe (31), The central connecting pipe (31) is provided with a second group of holes consisting of a plurality of holes, and the supply gas of the secondary combustion chamber, which is gas sent to the housing (33) of the secondary combustion chamber, is sent into the central connecting pipe (31) through the second group of holes, and secondary combustion gas, which is a gas obtained by mixing the primary combustion gas and the supply gas of the secondary combustion chamber, is led from the central connecting pipe (31) to the tertiary combustion chamber (7).

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