WO2011074364A1 - 固形燃料の燃焼装置 - Google Patents
固形燃料の燃焼装置 Download PDFInfo
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- WO2011074364A1 WO2011074364A1 PCT/JP2010/070358 JP2010070358W WO2011074364A1 WO 2011074364 A1 WO2011074364 A1 WO 2011074364A1 JP 2010070358 W JP2010070358 W JP 2010070358W WO 2011074364 A1 WO2011074364 A1 WO 2011074364A1
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- combustion
- cylinder
- solid fuel
- air
- peripheral surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B40/00—Combustion apparatus with driven means for feeding fuel into the combustion chamber
- F23B40/06—Combustion apparatus with driven means for feeding fuel into the combustion chamber the fuel being fed along the fuel-supporting surface
- F23B40/08—Combustion apparatus with driven means for feeding fuel into the combustion chamber the fuel being fed along the fuel-supporting surface into pot- or trough-shaped grates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B90/00—Combustion methods not related to a particular type of apparatus
- F23B90/04—Combustion methods not related to a particular type of apparatus including secondary combustion
- F23B90/06—Combustion methods not related to a particular type of apparatus including secondary combustion the primary combustion being a gasification or pyrolysis in a reductive atmosphere
Definitions
- the present invention relates to a combustion apparatus that generates a high-temperature combustion gas by burning solid fuel such as wood chips, wood chips, twigs, or RPF.
- the combustion apparatus disclosed in Patent Document 1 includes a combustion chamber 51 having the same diameter as that of the fuel tank 50 extending above the fuel tank 50 in which the solid fuel F is accommodated.
- An air supply passage 53 formed of an annular space is formed between the outer casing 52 and the combustion chamber 51 which are arranged with a gap with respect to the outer peripheral surface, and there is a gap with respect to the outer peripheral surface of the fuel tank 50.
- An air suction passage 57 formed of an annular space is formed between the lower outer casing 54 and the fuel tank 50 arranged in this manner.
- the blower 58 provided in an arrangement that connects the air suction flow channel 57 and the air supply flow channel 53 has the air A sucked from the air suction flow channel 57 to the air supply flow channel 53 from the lower end thereof to the combustion chamber 51.
- the supplied air A rises while swirling in the annular air supply passage 53, and this swirling airflow is guided by the air direction adjusting plate 59 and flows into the combustion chamber 51 from the upper end opening thereof. After that, the gas descends while flowing along the inner peripheral surface of the combustion chamber 51 and is supplied to the combustion region in the combustion chamber 51 as combustion air.
- This combustion apparatus improves combustion efficiency by mixing incompletely combustible combustible material with the swirling flow of air flowing along the inner wall of the combustion chamber by the centrifugal force of the swirling airflow of its weight and air A. I am trying.
- the residue that has not been completely combusted in the combustion chamber 51 is supplied to the auxiliary combustion chamber 60 above the combustion chamber 51 by the ascending air current so as to be completely combusted, and then the combustion gas G Is discharged to the outside from the exhaust rod 61 above the auxiliary combustion chamber 60, and no consideration is given to processing the ash contained in the combustion gas G in the combustion chamber 51.
- the soot is mainly discharged from the exhaust soot 61, and a particularly heavy substance or an inorganic substance among the ash that is generated in a relatively large amount when the solid fuel F is combusted.
- Ash generated by incomplete combustion does not scatter even when blown up by a flame from the combustion region in the combustion chamber 51, and strikes the inner peripheral surface of the combustion chamber 51 under the centrifugal force of the swirling flow of the air A. As a result, the kinetic energy is reduced and falls downward, and accumulates on the surface of the unburned solid fuel F inside the fuel tank 50 below the combustion chamber 51.
- the ash deposited on the surface of the unburned solid fuel F described above significantly reduces the combustion efficiency in the combustion chamber 51. Therefore, in this combustion apparatus, it is difficult to continue combustion continuously over a long period while maintaining high combustion efficiency.
- the combustion apparatus if the high combustion efficiency is always maintained, for example, the combustion operation is stopped, and the fuel tank 50 pressed against the flange 51 a at the lower end of the combustion chamber 51 by the hydraulic jack 62 is connected to the hydraulic jack 62. After being lowered by operation, it is necessary to frequently perform a complicated operation of removing ash deposited on the surface of the solid fuel F in the fuel tank 50.
- the combustion apparatus is configured so that the fuel tank 50 is pressed against and separated from the flange 51a of the combustion chamber 51 by the vertical movement of the hydraulic jack 62. As shown in FIG. Each time the combustion of the solid fuel F is completed, the fuel tank 50 is lowered, the ash deposited in the fuel tank 50 is taken out, and then the process of supplying new solid fuel F into the fuel tank 50 is repeated. It seems to be. Accordingly, since this combustion apparatus needs to periodically remove ash and supply the solid fuel F, it is difficult to continuously operate for a long time or for a long period of time. The thermal energy of high-temperature combustion gas cannot be used effectively. In other words, it seems that this combustion apparatus can only be applied to uses such as waste vinyl, waste plastic, and waste tires that are efficiently incinerated by centrifugal combustion.
- the combustion chamber 51 having the same diameter as the fuel tank 50 is integrally extended above the fuel tank 50, the solid fuel F is generated by burning in the fuel tank 50. Since the combustion gas G rises while diffusing almost entirely inside the combustion chamber 51, the swirling air flowing in from the upper end opening of the combustion chamber 51 moves downward by the combustion gas G diffusing throughout the inside of the combustion chamber 51. The flow toward is obstructed. That is, a part of the combustion air A that flows while swirling into the combustion chamber 51 is sucked into the rising combustion gas G at an upper portion in the combustion chamber 51, and all of it is in the fuel tank 50.
- the air A supplied from the blower 58 to the air supply passage 53 flows in a long passage from the lower end portion to the upper end portion of the air supply passage 53 while turning, and thus burns in a state where the flow velocity is lowered. It flows into the combustion chamber 51 from the upper end opening of the chamber 51. This also makes it more difficult to smoothly supply the combustion air A to the combustion region in the fuel tank 50 while swirling along the inner peripheral surface of the combustion chamber 51. Accordingly, in order to prevent the flow velocity of the swirling air A from decreasing in the air supply flow path 53, it is conceivable to narrow the flow width of the air supply flow path 53. The flow pressure of the swirling air A flowing into the chamber 51 becomes weak, and it is difficult to smoothly supply the swirling air A to the combustion region in the fuel tank 50.
- the combustion apparatus passes through the air supply passage 53, it is preheated by receiving heat conduction from the combustion gas G from the combustion chamber 51, and the heated air A flows into the combustion chamber 51. Since the air instantaneously becomes high temperature, it is supplied as combustion air A to the combustion region or combustion gas G of the combustion tank 50, so that the combustion temperature partially becomes higher than necessary, and the life of the combustion chamber 51 is increased. There is also a risk of shortening. Furthermore, since the combustion apparatus has a complicated structure, there is a problem that the cost is increased.
- An object of the present invention is to provide a combustion apparatus capable of stably generating high-temperature combustion gas by burning continuously for a long time or a long time.
- a solid fuel combustion apparatus includes a cylindrical combustion cylinder having a smaller diameter and height than the outer cylinder inside the cylindrical outer cylinder.
- the body is disposed concentrically, an annular ash collection space is provided between the lower inner peripheral surface of the outer cylinder and the outer peripheral surface of the combustion cylinder, and the outer
- a blower is mounted in an arrangement that feeds air toward the inscribed direction of the cylinder, and the supplied air is prevented from flowing upward and flows along the inner peripheral surface of the exterior cylinder.
- a flow guide portion having an inner flange shape is provided, and a discharge port for a combustion gas is formed at a central portion of the flow guide portion, so that solid fuel is burned inside the combustion cylinder.
- a solid fuel combustion apparatus is the solid fuel combustion apparatus according to the first aspect, wherein at least the outer cylindrical body of at least the outer cylindrical body and the combustion cylindrical body has a bottomed cylindrical shape.
- a receiving member that supports the container is provided at a location around the discharge port on the upper surface of the flow guide portion, and the combustion cylinder is within a range of 20% to 60% of the height of the exterior cylinder. Is set to the height of
- a solid fuel combustion apparatus in which a cylindrical combustion cylinder having a smaller diameter and height than the outer cylinder is concentrically disposed inside the cylindrical outer cylinder.
- An annular ash discharge path is provided between the lower inner peripheral surface of the outer cylinder and the outer peripheral surface of the combustion cylinder, and the upper end portion of the outer cylinder is directed toward the inscribed direction of the outer cylinder.
- An air blower is mounted in an arrangement for supplying air, and an inner flange-shaped flow guide portion is provided that prevents the supplied air from flowing upward and flows along the inner peripheral surface of the outer cylinder.
- a combustion gas discharge port is formed at the center of the flow guide portion, a solid fuel fuel supply pipe is connected to the lower end portion of the combustion cylinder, and the exterior cylinder is mounted and fixed.
- An ash collection box for collecting ash is provided in the support pedestal below the ash discharge path. It is characterized by being freely arranged and from the platform.
- a solid fuel combustion apparatus is the solid fuel combustion apparatus according to the third aspect, wherein the fuel supply pipe penetrates through the side walls of the exterior cylinder body and the combustion cylinder body, respectively.
- the combustion cylinder is placed in an arrangement in which solid fuel is supplied toward the inscribed direction of the combustion cylinder.
- a solid fuel combustion apparatus comprising: a cylindrical base cylinder portion having a straight cylindrical center; and a cylinder extending while curving continuously from an upper end opening of the base cylinder portion toward one side. And a cylindrical combustion cylinder having a diameter smaller than that of the base cylinder part is formed concentrically on the inner side of the base cylinder part.
- An annular ash discharge path is provided between the inner peripheral surface of the base tube portion and the outer peripheral surface of the combustion tube body, and an inscribed direction of the guide tube portion is provided at a tip portion of the guide tube portion.
- An internal fan-like flow in which an air blower is attached in an arrangement for supplying air toward the air and the supplied air is guided to flow along the inner peripheral surface of the guide tube portion to generate a swirling air flow.
- a guide portion is provided, and the combustion gas rising from the combustion cylinder is placed in the center of the flow guide portion.
- a discharge port for discharging to the side is formed, and a fuel supply pipe of solid fuel is connected to and connected to a lower end portion of the combustion cylinder, and the inside of the support base on which the exterior cylinder is mounted and fixed
- An ash collection box for collecting ash is disposed in a lower part of the ash discharge path so as to be freely accessible to the support table.
- a solid fuel combustion apparatus is the solid fuel combustion apparatus according to the fifth aspect, wherein the guide cylinder is directed to one side while maintaining the same diameter from the upper end opening of the base cylinder.
- the combustion cylinders having both smaller diameters and heights than the outer cylinders are provided in the outer cylinders in a concentric arrangement.
- the combustion gas generated by burning the solid fuel in the cylinder rises in a spiral shape and a reverse tornado shape without diffusing throughout the interior of the exterior cylinder.
- the swirling air flow generated in the vicinity of the upper end of the outer cylinder by the air supplied from the blower is greatly separated from the swirling gas flow with the swirling diameter of the combustion gas being reduced, so that the suction force of the combustion gas The gas flows smoothly downward while swirling along the inner peripheral surface of the outer cylinder, and receives the suction force of the combustion gas when it moves down to the vicinity of the upper end opening of the combustion cylinder.
- almost all of the air is supplied as a combustion air flow to the combustion region in the combustion cylinder while maintaining the swirling, and as a result, complete combustion of the solid fuel in the combustion region is effectively promoted.
- the air sent from the blower is directly supplied to the vicinity of the upper end portion of the outer cylinder so that it becomes a swirling air flow having a high flow velocity and is quickly supplied to the combustion area in the combustion cylinder.
- the complete combustion of the solid fuel is promoted more effectively. That is, the solid fuel is burned with high efficiency by the centrifugal combustion method, and efficiently generates high-temperature combustion gas.
- the swirling air flow generated in the vicinity of the upper end of the outer cylinder is quickly supplied to the combustion region in the combustion cylinder without lowering the flow velocity and flow pressure along the inner peripheral surface of the outer cylinder. Since the swirling air flow is supplied to the combustion region of the combustion cylinder as combustion air while maintaining a low temperature that is hardly preheated by the combustion gas, the temperature of the combustion region or the combustion gas may become partially higher than necessary. In addition, the expected life of the combustion cylinder can be ensured. Furthermore, since it has a very simplified structure, it can be manufactured at low cost.
- the ash from the combustion of heavy or inorganic substances blown up above the combustion cylinder by the flame caused by the combustion of the solid fuel in the combustion cylinder is a spiral and reverse tornado-like combustion gas.
- a part of the self-weight and swirling airflow is blown away from the upper part of the opening of the combustion cylinder in the radial direction by the centrifugal force of the rising airflow and hits the inner peripheral surface of the outer cylinder to reduce the kinetic energy. Falls into the annular ash collection space. Therefore, ash is collected in the ash collection space and does not accumulate on the surface of the unburned solid fuel in the combustion cylinder, so that high combustion efficiency is always obtained until all of the solid fuel contained in the combustion cylinder has been burned. Combustion can be continued continuously while maintaining.
- the receiving member for supporting the container is provided at the peripheral portion of the discharge port on the upper surface of the flow guide portion, for example, outdoors such as a campsite
- the twigs and wood chips collected can be burned with high efficiency as solid fuel, and can be suitably used for heating foods in containers.
- the combustion cylinder is set to a height within the range of 20% to 60% of the height of the outer cylinder, sufficient combustion calories can be secured and ash can be efficiently recovered. it can. In other words, if the height of the combustion cylinder is less than 20% of the outer cylinder, a sufficient amount of solid fuel cannot be put into the combustion cylinder, so that the required combustion calories cannot be obtained.
- the upper end opening of the combustion cylinder is positioned close to the upper end of the outer cylinder, and thus the combustion cylinder is blown up from the upper end opening of the combustion cylinder. It becomes difficult for all of the ash to abut against the inner peripheral surface of the outer cylinder by the centrifugal force of the ascending air current, and the ash cannot be collected sufficiently effectively.
- the solid fuel in the combustion cylinder burns by the centrifugal combustion method by the supply of the swirling air, so that the combustion gas swirls in a spiral shape and forms a reverse tornado shape. Because the ash that rolls up and blows away radially outward by the centrifugal force of the combustion gas at this time hits the inner peripheral wall of the outer cylinder, the kinetic energy is reduced and recovered from the ash discharge path to the ash collection box, The inside of the combustion cylinder is always maintained in a state in which ash is excluded, and the solid fuel is continuously burned with high efficiency over a long period of time, so that high-temperature combustion gas continues to be stably generated over a long period of time.
- the ash is collected in the ash collection box, it is not necessary to stop the combustion operation and remove the ash, and the ash collected and collected in the ash collection box is collected from the support stand. Can be taken out and discarded easily, so that it is possible to continuously or intermittently supply the solid fuel into the combustion cylinder through the fuel supply pipe and continue the combustion operation for a long period of time. .
- As a result of being able to generate high-temperature combustion gas stably and continuously in this way it is easy to use in various industrial plants that generate steam, hot water, hot air, etc. by heat exchange of the thermal energy of the combustion gas. It can be used.
- the combustion cylinder whose diameter and height are both smaller than the outer cylinder is provided in the outer cylinder in a concentric arrangement, the combustion gas generated by burning the solid fuel in the combustion cylinder Rises in a spiral and inverted tornado shape without diffusing throughout the interior of the exterior cylinder. Therefore, the swirling air flow generated in the vicinity of the upper end of the outer cylinder is largely separated from the swirling gas flow whose combustion gas swirl diameter is reduced, so that the outer cylinder does not receive the suction force of the combustion gas.
- the swirling air flow generated in the vicinity of the upper end of the outer cylinder is quickly supplied to the combustion region in the combustion cylinder without lowering the flow velocity and flow pressure along the inner peripheral surface of the outer cylinder. Since the swirling air flow is supplied to the combustion region of the combustion cylinder as combustion air while maintaining a low temperature that is hardly preheated by the combustion gas, the temperature of the combustion region or the combustion gas may become partially higher than necessary. In addition, the expected life of the combustion cylinder can be ensured.
- the solid fuel extruded from the fuel supply pipe into the combustion cylinder is continuously or so as to move along the inner peripheral surface inside the combustion cylinder. While being intermittently supplied, it is also supplied to the center of the combustion cylinder as the combustion of the solid fuel in the combustion cylinder progresses, so the solid fuel can be supplied smoothly without requiring a large conveying force, And it can supply substantially uniformly over the whole inside of a combustion cylinder.
- the exterior cylinder has a shape in which the curved guide cylinder is continuously provided above the base cylinder, but the guide cylinder from the blower.
- the air supplied toward the inscribed direction of the gas flows along the inner surface of the flow guide portion and the inner peripheral surface of the guide tube portion to form a swirl air flow, and this swirl air flow is converted into a curved inner periphery of the guide tube portion.
- As it flows along the surface it descends smoothly while swirling, and almost all of it is supplied as a combustion air flow to the combustion area in the combustion cylinder.
- complete combustion of solid fuel in the combustion area is effective. Promoted.
- the air supplied from the blower is directly supplied to the vicinity of the tip of the guide cylinder portion of the outer cylinder and becomes a swirling air flow with a high flow velocity, it is quickly supplied to the combustion region in the combustion cylinder. Therefore, the complete combustion of the solid fuel in the combustion region is promoted more effectively, and the solid fuel is burned with high efficiency by the centrifugal combustion method.
- ash from combustion of heavy or inorganic substances blown up in the combustion gas flow is blown away from the combustion cylinder radially outward by the centrifugal force of the rising air flow rising up the combustion gas flow.
- the outer cylindrical body hits the inner peripheral surface of the guide cylinder part to reduce kinetic energy, fall into the annular ash discharge path, and be collected in the ash collection box. Can be held.
- the combustion cylinder since the curved guide cylinder (for example, 35A) is disposed in the outer cylinder, unlike the outer cylinder having a shape having a straight cylindrical core as a whole, the combustion cylinder has a minute portion such as a soot. After the dust-like ash is blown up directly from the combustion cylinder, it is prevented from rising by the curved portion in the guide cylinder, and falls into the ash discharge path without being guided to the discharge port. . Therefore, in this combustion apparatus, since the collection efficiency of ash becomes extremely high, clean combustion gas can be discharged from the discharge port.
- the combustion gas flow is discharged to one side from the discharge port of the outer cylinder, so that when applied to the construction of an industrial plant device, the combustion is performed from the discharge port without interposing a connecting duct.
- the gas flow can be directly supplied to a heat exchanger or the like.
- the configuration can be simplified and the cost can be reduced to the extent that the connection duct is not required, and the loss of heat energy when the combustion gas flow passes through the connection duct is avoided. Can be used.
- the guide cylinder portion of the exterior cylinder body is continuously curved toward one side while gradually decreasing in diameter from the upper end opening of the base cylinder portion.
- the combustion cylinder can be set to a large volume as the diameter of the base cylinder portion of the exterior cylinder can be increased.
- high burning calories can be obtained.
- air is supplied to the vicinity of the tip portion having the smallest diameter of the guide tube portion that gradually decreases in diameter in the exterior tube body, this air flows along the inner peripheral surface of the portion having the smallest diameter of the guide tube portion.
- the swirling air flow having a high swirl speed is lowered at high speed in the guide cylinder by the high swirl speed, and almost all of the swirl air flow is quickly supplied to the combustion cylinder as combustion air. Therefore, the combustion efficiency of the combustion region in the combustion cylinder is further improved.
- FIG. 1 is a longitudinal sectional view showing a solid fuel combustion apparatus according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view taken along line II-II in FIG.
- FIG. 3 is a cross-sectional view taken along line III-III in FIG. It is a longitudinal cross-sectional view which shows the combustion apparatus of the solid fuel which concerns on 2nd Embodiment of this invention.
- FIG. 5 is a sectional view taken along line VV in FIG. 4.
- FIG. 5 is a sectional view taken along line VI-VI in FIG. 4. It is a figure for demonstrating the structure of the industrial plant apparatus constructed
- (A) is a longitudinal sectional view of an essential part showing a solid fuel combustion apparatus according to a fourth embodiment of the present invention, and (b) is a sectional view taken along line BB of (a).
- (A) is a longitudinal sectional view showing a solid fuel combustion apparatus according to a fifth embodiment of the present invention, and (b) is a sectional view taken along line IX-IX in (a). It is a longitudinal cross-sectional view of the principal part which shows the solid fuel combustion apparatus which concerns on 6th Embodiment of this invention. It is a longitudinal cross-sectional view which shows the conventional combustion apparatus of solid fuel.
- FIG. 1 is a longitudinal sectional view showing a solid fuel combustion apparatus according to a first embodiment of the present invention.
- this combustion apparatus can be suitably used as a miniature burner outdoors in a campsite or the like.
- a simple type combustion apparatus is illustrated.
- this combustion apparatus has a bottomed cylindrical combustion cylinder 2 that is concentric on the bottom surface inside a bottomed cylindrical exterior cylinder 1 that is smaller in both diameter and height than the exterior cylinder 1.
- An annular ash collection space 3 is formed between the outer cylinder 1 and the combustion cylinder 2 in a plan view.
- a ring-shaped protrusion 4 having an inner diameter slightly larger than the outer diameter of the combustion cylinder 2 is integrally formed at the center of the bottom surface of the exterior cylinder 1, and the combustion cylinder 2 is connected to the protrusion 4.
- the combustion cylinder 2 is fixed in the outer cylinder 1 in a surely concentric positioning state by being detachably fitted therein.
- the outer cylinder 1 is preferably made of iron, and the combustion cylinder 2 is preferably made of stainless steel or casting.
- the combustion cylinder 2 has a bottomed cylindrical shape. However, since the outer cylinder 1 has a bottomed cylindrical shape, the combustion cylinder 2 may have a simple cylindrical shape.
- a lid 7 is detachably fitted to the upper end opening of the outer cylinder 1, and a combustion gas G discharge port 7 a, which will be described later, is opened in the center of the cover 7.
- a portion from the edge portion to the outer peripheral edge of 7a serves as a flow guide portion 7b that generates a swirling air flow A1 to be described later and guides the swirling air flow A1 downward.
- a plurality of (for example, four) receiving members 11 are fixed to the upper surface of the flow guide portion 7b so as to support the heating container 10 such as a pan from below.
- a lid made of a flat plate is simply placed on the upper end opening of the outer cylinder 1. Also good.
- a single receiving member having a ring shape that can support the heating container 10 may be provided.
- a blower tube 8 is fixed to a location near the upper end opening of the outer cylinder 2, and a blower 9 that supplies air A at a high pressure is connected to the blower tube 8.
- a power source that can be used outdoors, for example, a sirocco fan that can be driven by using a storage battery as a power source can be suitably used.
- the blower 9 may be connected to a socket of a car cigarette lighter with a connection line to supply power.
- FIG. 2 which is a cross-sectional view taken along the line II-II in FIG. 1, the air duct 8 is fixed to the exterior cylinder 1 in an arrangement for supplying air A toward the inscribed direction of the exterior cylinder 3. ing.
- the high-pressure air A fed from the blower 9 into the exterior cylinder 1 through the blow pipe 8 is applied to the inner surface of the flow guide portion 7b and the inner peripheral surface of the exterior cylinder 1 as clearly shown in FIG.
- the combustion cylinder 2 When used for cooking food at campsites, etc., after removing the lid 7 from the outer cylinder 1, the combustion cylinder 2 is taken out from the outer cylinder 1, and the twigs and wood chips, etc. that have been collected and made small are solid.
- the fuel is packed in the combustion cylinder 2 as fuel F, and the combustion cylinder 2 is fitted into the protruding portion 4 and attached to the exterior cylinder 1 in an accurate concentric positioning state.
- the lid body 7 is attached to the exterior cylinder body 1 and each receiving member of the lid body 7
- the heating container 10 is placed on 1 and the blower 9 is driven.
- the swirling air flow A1 that swirls at high speed along the inner peripheral surface of the outer casing 1 and the inner surface of the flow guide portion 7b is generated. Since the swirling air flow A1 is prevented from rising by the flow guide portion 7b, the swirling air flow A1 flows downward while swirling along the inner peripheral surface of the outer cylindrical body 1, and III-III in FIG. As shown in FIG.
- the combustion air is received in the combustion region in the combustion cylinder 2 by receiving the suction force of the high-temperature combustion gas G when lowered to the vicinity of the opening end of the combustion cylinder 2.
- the flow A2 is supplied while maintaining swirling, and details of this point will be described later.
- this combustion apparatus has a combustion cylinder 2 having a diameter and height smaller than that of the outer cylinder 2 provided on the bottom surface of the outer cylinder 1 in a concentric relative arrangement.
- the solid fuel F is burned in the body 2. That is, the solid fuel F is burned in response to the supply of the swirling flow of the combustion air A2 at the central portion of the bottom where an annular space exists with respect to the inner peripheral surface of the exterior cylinder 1. For this reason, the combustion gas G generated by combustion does not diffuse throughout the interior of the combustion chamber 51 as in the conventional device of FIG. 11, but is spiral and reverse tornado as shown in FIG. Rise up. Therefore, as shown in FIG.
- the swirling air flow A1 smoothly flows downward while swirling along the inner peripheral surface of the exterior cylinder 1 without being affected by the suction force of the combustion gas G, and the upper end of the combustion cylinder 2 As shown in FIG. 3, when it moves down to the vicinity of the opening, it receives the suction force of the combustion gas G in the vicinity of the swirl gas flow G1, and burns as the combustion air flow A2 while maintaining the swirl. It is supplied to the combustion region in the cylinder 2. As described above, almost all of the swirling air flow A1 generated by the air A supplied from the blower 9 is smoothly supplied to the combustion region in the combustion cylinder 2 as the combustion air flow A2. Thus, the complete combustion of the solid fuel F is effectively promoted. Moreover, unlike the conventional device of FIG.
- the swirling air flow A is sent from the blower 9 unlike the one in which the swirling air flow A is supplied into the combustion chamber 51 from the upper end opening of the combustion chamber 51 after passing through the long air supply passage 53.
- the generated air A is supplied directly to the vicinity of the upper end opening of the outer cylindrical body 1 and generates a swirling air flow A1 having a high flow velocity, and is not affected by the suction force of the combustion gas G.
- Almost all of the swirling air flow A1 is smoothly supplied to the combustion region in the combustion cylinder 2 without greatly reducing the flow velocity and the flow pressure. From this point also, the solid fuel F in the combustion region Is more effectively promoted. That is, the solid fuel F is burned with high efficiency by the centrifugal combustion method, and efficiently generates the high-temperature combustion gas G.
- the swirling air flow A1 generated by the air A sent from the blower 9 does not decrease the flow velocity and the flow pressure along the inner peripheral surface of the outer cylinder 1 away from the combustion gas G. Since the swirl air flow A1 is supplied to the combustion region of the combustion cylinder 2 as the combustion air A2 while maintaining a low temperature that is hardly preheated by the combustion gas G, since it is quickly supplied to the combustion region in the combustion cylinder 2. In addition, the temperature of the combustion region or the combustion gas G does not partially become higher than necessary, and the expected life of the combustion cylinder 2 can be ensured. Furthermore, since the combustion apparatus has a very simplified structure compared to the conventional apparatus of FIG. 11, it can be manufactured at low cost, and twigs and wood chips collected outdoors are used as solid fuel. It becomes suitable for the use which burns with high efficiency and heats food easily and efficiently.
- the combustion apparatus has a great feature other than the effects described above. That is, as shown in FIG. 1, the ash B generated by combustion of a heavy substance or inorganic substance blown up above the combustion cylinder 2 by the flame due to the combustion of the solid fuel F in the combustion cylinder 2 is It is blown away radially outward from the upper part of the opening of the combustion cylinder 2 by the centrifugal force of the airflow that rises the combustion gas G in a spiral shape and in a reverse tornado shape, and on the inner peripheral surface of the outer cylinder 1 At the same time, the kinetic energy is reduced and falls into the annular ash collection space 3 due to its own weight and part of the swirling air flow A1.
- the combustion apparatus of this embodiment is a portable small size that can be easily carried, it can be suitably used for applications such as heating food outdoors such as a campsite.
- FIG. 4 is a longitudinal sectional view showing a solid fuel combustion apparatus according to a second embodiment of the present invention.
- an apparatus having a structure that can be effectively used for an industrial plant apparatus is illustrated.
- a base plate 13 is placed and fixed on the upper end surface of a support base 12, and a cylindrical outer cylindrical body 14 is fixed on the base plate 13 by a plurality of bolts 17.
- a bottomed cylindrical combustion cylinder 18 that is smaller in diameter and height than the outer cylinder 14 is disposed concentrically with the outer cylinder 14, so that a plurality of stays are provided. 20 is supported by the exterior cylinder 14 from the side.
- the outer cylinder 14 is preferably made of iron, and the combustion cylinder 18 is preferably made of stainless steel or casting.
- a blower 23 that supplies air A at a high pressure into the exterior cylinder body 14 is attached to the vicinity of the upper end portion of the exterior cylinder body 14 via a blower pipe 24.
- the upper end portion of the outer cylinder 14 is provided with an inner flange-shaped flow guide portion 14a extending inwardly from the upper end portion, and a discharge port 14b opened at the center of the flow guide portion 14a.
- An exhaust pipe portion 27 extending upward from the peripheral edge portion of the discharge port 14b is integrally formed.
- the flow guide portion 14a guides the air A supplied from the blower 24 through the blow pipe 24 so as to flow along the inner peripheral surface of the exterior cylindrical body 14, and generates the swirling air flow A1.
- the base plate 2 has an annular shape in a plan view in which a portion excluding a peripheral end portion on which the flange portion 14c at the lower end of the outer cylindrical body 14 is placed and fixed is formed in an opening 13a.
- the ash collection port 28 of the ash B falling through the ash discharge passage 19 is opened in a circular shape between the hole edge of the opening portion 13a of the opening 2 and the outer peripheral surface of the lower end of the combustion cylinder 18.
- a large ash blocking plate 29 having a mesh shape or a lattice shape is attached to the ash collection port 28.
- An ash collection box 30 is arranged at a position below the opening 13 a of the base plate 13 in the support base 12.
- An outlet 12a of the ash collection box 30 is opened on one side wall of the support stand 12, and an opening / closing lid 31 is attached to the outlet 12a so as to be freely opened and closed.
- the ash collection box 30 is provided with a handle 30a for easily performing the take-out operation, and the opening / closing lid 31 is provided with a handle 31a for easily performing the opening / closing operation.
- FIG. 5 which is a cross-sectional view taken along the line VV in FIG. 4, a pair of blower tubes 24 that supply high-pressure air A from the blower 23 shown in FIG.
- the pipes 24 and 24 are fixed in an arrangement in which air A is supplied toward the inscribed direction of the exterior cylinder 14 at two locations facing each other in the radial direction in the exterior cylinder 14. Therefore, the air A respectively supplied from the air ducts 24 into the outer cylinder 14 is prevented from moving upward by the flow guide part 14a of the outer cylinder 14, and the air guide 14a and the outer cylinder 14 By flowing along the circumferential surface, a swirling air flow A1 swirling at a high speed is formed, and the swirling air flow A1 descends along the inner circumferential surface of the outer cylindrical body 14.
- the combustion cylinder 18 having both a diameter and a height smaller than that of the outer cylinder 14 is provided in a concentric arrangement at the lower end inside the outer cylinder 14.
- the solid fuel F inside the combustion cylinder 18 is supplied with the swirling flow of the combustion air A2 and burns at a location isolated from the inner peripheral surface of the outer cylinder 14 with an annular space. .
- the combustion gas G generated by the combustion does not diffuse throughout the interior of the exterior cylinder 14 as in the conventional device of FIG. 11, but is spiral and reverse tornado as shown in FIG. Rise to.
- the swirling air flow A1 is separated from the swirling gas flow G1 in which the swirling diameter of the combustion gas G is reduced. Therefore, it is not affected by the suction of the combustion gas G. Therefore, the swirling airflow A1 smoothly flows downward while swirling along the inner peripheral surface of the outer cylinder 1, and when the swirling airflow A1 moves down to a position near the upper end opening of the combustion cylinder 18, By receiving the suction force of the combustion gas G in the vicinity of the swirl gas flow G1, as a result of being supplied to the combustion region in the combustion cylinder 18 as the combustion air flow A2 while maintaining the swirl, solids in the combustion region are obtained. The complete combustion of the fuel F is effectively promoted.
- the air A delivered from the blower 24 is directly supplied to the vicinity of the upper end opening of the outer cylinder 14 and immediately generates a swirling air flow A1 having a high flow velocity, and then the influence of the suction force of the combustion gas G.
- almost all of the swirling air flow A1 is smoothly supplied to the combustion region in the combustion cylinder 2 without greatly reducing the flow velocity and the flow pressure.
- Complete combustion of the solid fuel F is promoted more effectively. That is, the solid fuel F is burned with high efficiency by the centrifugal combustion method, and efficiently generates the high-temperature combustion gas G.
- the swirling air flow A1 is rapidly supplied to the combustion region in the combustion cylinder 2 without decreasing the flow velocity and the flow pressure along the inner peripheral surface of the outer casing 1 away from the combustion gas G. Since the combustion gas A is supplied to the combustion region of the combustion cylinder 2 as the combustion air A2 while being kept at a low temperature without being preheated almost by the combustion gas G, the temperature of the combustion region or the combustion gas G is partially higher than necessary. Therefore, the expected life of the combustion cylinder 18 can be ensured. Furthermore, since this combustion apparatus has a very simplified structure compared to the conventional apparatus of FIG. 11, it can be manufactured at low cost.
- the ash B which is blown up by the flame of the solid fuel F in the combustion cylinder 18 and is blown up above the combustion cylinder 18 by the combustion of a heavy substance or an inorganic substance, has a spiral shape and a reverse tornado shape.
- the ash discharge passage 19 and the large ash blocking plate 29 of the ash collection port 28 are dropped by the partial weight of the dead weight and the swirling air flow A1 and fall into the ash collection box 30.
- the large ash B that is not completely burned is blocked from passing by the large ash blocking plate 29, and once accumulated on the large ash blocking plate 29, the combustion gas G in the combustion cylinder 18 is then accumulated. It burns completely in the ash discharge passage 19 which is in a high temperature atmosphere due to heat transfer from the ash. Therefore, unburned large ash B is reliably prevented from falling into the ash collection box 30 and burning in the ash collection box 30.
- the opening / closing lid 31 is opened, the ash collection box 30 is taken out from the outlet 12 a of the support 12, and the ash B in the ash collection box 30 is removed. be able to. Since the operation of removing the ash B in the ash collection box 30 can be easily performed in a very short time in a state where the combustion operation of the solid fuel F is continued, the combustion operation is continuously performed while maintaining a high combustion efficiency for a long period of time. As a result, the combustion apparatus exchanges heat energy of the combustion gas G generated by the combustion of the solid fuel F and discharged from the exhaust pipe portion 17, for example, hot air, hot water or steam. It is possible to construct an industrial plant apparatus that generates
- the fuel supply pipe 22 is provided so as to supply the solid fuel F conveyed by the rotation of the screw 21 toward the inscribed direction of the combustion cylinder 18. It has been. Therefore, the solid fuel F pushed out from the fuel supply pipe 22 into the combustion cylinder 18 continuously or while moving along the inner peripheral surface inside the combustion cylinder 18 as clearly indicated by an arrow in FIG. Since it is supplied intermittently and is fed to the center of the combustion cylinder 18 as the combustion of the solid fuel F in the combustion cylinder 18 progresses, the solid fuel F does not require a large conveying force. It can be supplied smoothly and can be supplied almost uniformly throughout the entire combustion cylinder 18. On the other hand, the fuel supply pipe 18 is provided so as to pass through the central portion of the bottom wall of the combustion cylinder 18 and face the inside, and the solid fuel F is supplied while being pushed into the central portion of the combustion cylinder 18 from below. You can also
- a water cooling jacket having a structure in which water is circulated by a pump may be embedded in the cylindrical wall of each of the outer cylinder 14 and the combustion cylinder 18.
- the outer cylinder 14 and the combustion cylinder 18 are effectively cooled by a water cooling method using circulating water to ensure the expected life of the outer cylinder 14 and the combustion cylinder 18.
- the water circulating in the water-cooled jacket receives far infrared rays from the combustion gas G and is heated to, for example, about 60 ° C. By collecting the heat of the hot water and generating hot air or hot water, It can also be used effectively for purposes such as promoting the growth of plants in house cultivation.
- FIG. 7 is a view for explaining the configuration of an industrial plant apparatus constructed by applying the solid fuel combustion apparatus according to the third embodiment of the present invention.
- the same as or corresponding to FIG. The same code
- two exterior cylinders 14 to which two blowers 23 similar to those shown in the second embodiment are respectively connected are connected to each other, and the combustion cylinder 18 is only inside the lower exterior cylinder 14.
- the draft effect is promoted by connecting the two exterior cylinders 14, and the inside of the upper exterior cylinder 14 passes through the discharge port 14 b of the connecting portion of both the exterior cylinders 14, 14.
- the non-combustible gas portion contained in the combustion gas that has risen in the air is further completely burned by the combustion air supplied from the two blowers 23 into the upper outer cylindrical body 14 to become a higher-temperature combustion gas. It is discharged from the discharge port 14 b at the upper end of the upper exterior cylinder body 14.
- the ash B by combustion of a heavy substance or an inorganic substance is not blown up to the upper exterior cylinder 14, it is not necessary to provide the ash collection function in the upper exterior cylinder 14.
- the high-temperature combustion gas discharged from the discharge port 14b of the upper exterior cylinder 14 is sent to the heat exchanger 33 through the connecting duct 32, and gives its own thermal energy to the fluid flowing in the heat exchanger 33. Heat exchange is performed to produce exhaust gas.
- the exhaust gas is fed to the cyclone dust collector 34 and separated into clean gas and dust by centrifugal force. The dust falls and is discharged from the take-out portion 37, and the clean gas is sucked into the attracting blower 38. After that, it is discharged from the exhaust pipe 39 to the atmosphere.
- the supply side end portion (left end portion in the figure) of the fuel supply pipe 22 is connected in communication with the fuel supply section 40 a at the lower end portion of the fuel hopper 40, and is near one end of the screw 21 built in the fuel supply pipe 22.
- the portion (the portion in the vicinity of the left end in the figure) is rotatably supported by two bearings 41 and 41 while penetrating the fuel supply unit 40a, and one end of the screw 21 is connected to the drive motor 42.
- the drive motor 42 is rotationally driven according to the required supply amount of the solid fuel F experimentally obtained in advance. That is, the necessary supply amount per unit time for each type of solid fuel F is experimentally determined in advance based on the capacity of the combustion cylinder 18 and the combustion efficiency for each type of solid fuel F to be supplied.
- the drive motor 42 is rotationally controlled so that only the supply amount of the solid fuel F can be supplied by rotating the screw 21. At this time, the rotation of the drive motor 42 is controlled based on operating conditions set to rotate either continuously at a required rotational speed or intermittently at predetermined time intervals.
- the industrial plant apparatus to which the combustion apparatus of the third embodiment is applied can stably and continuously generate the high-temperature combustion gas G as follows, and the thermal energy of the combustion gas is It is intended to be used for various industrial applications by heat exchange. That is, as described in the second embodiment, the solid fuel F in the combustion cylinder 18 is burned by the centrifugal combustion method by supplying the swirl flow of the combustion air A2, so that the combustion gas is swirled in a spiral shape and reversed. The ash that is rolled up in a tornado shape and blown away radially outward by the centrifugal force of the combustion gas at this time hits the inner peripheral surface of the lower outer cylindrical body 14, thereby reducing the kinetic energy, and the ash discharge path of FIG.
- the ash B is always kept in the combustion cylinder 14 so that the solid fuel F is continuously highly efficient over a long period of time. It is burned and the high-temperature combustion gas G continues to be generated stably. Moreover, when the combustion gas released upward from the discharge port 14b at the upper end of the lower exterior cylinder 14 passes through the upper exterior cylinder 14, the incombustible material or the noncombustible gas contained in the combustion gas is completely burned. Thus, the combustion gas having a required high temperature can be generated stably and continuously.
- the above-mentioned high-temperature combustion gas is supplied to the heat exchanger 33 and performs heat exchange so as to give its own thermal energy to the fluid passed through the heat exchanger 33.
- heat exchanger 33 for example, high-temperature water or steam is generated by heating the supplied water with the heat energy transfer of the combustion gas, or the supplied air is heated with the heat energy transfer of the combustion gas. It is possible to generate hot air by heating with.
- the high-temperature water, steam, or hot air generated by the heat exchanger 33 can be suitably used for various industrial applications such as air conditioning.
- the air pressure is exhausted by the pushing direction of the air supplied from the blower 23 provided in each of the two-stage exterior cylinders 14 and 14 into the apparatus and the suction direction of the exhaust gas by the induction blower 38. Since the positive pressure is directed toward the pipe 39, back smoke from the combustion cylinder 18 to the fuel supply pipe 22 is effectively prevented.
- FIG. 8A is a longitudinal sectional view of a main part showing a solid fuel combustion apparatus according to a fourth embodiment of the present invention
- FIG. 8B is a sectional view taken along line BB in FIG. .
- This combustion apparatus is different from the combustion apparatus of the second embodiment shown in FIG. 4 in that an inclined wall portion 43 having a diameter continuously decreasing upward is formed at a location near the upper end of the outer cylinder 14.
- a bulging portion 44 bulging from the upper end of the inclined wall portion 43 into a cylindrical shape having substantially the same diameter as the main body portion of the outer cylinder 14 is formed, and a single blower pipe to which a single blower 23 is connected. 24 is only the structure fixed to the bulging part 44 by arrangement
- This combustion device can obtain the following effects in addition to the same effects as described in the second embodiment. That is, the air A fed from the blower 23 through the blower pipe 24 to the bulging portion 44 is prevented from moving upward by the flow guide portion 14 a and flows along the inner peripheral surface of the bulging portion 44. Then, the swirling air flow A1 is generated, and the swirling air flow A1 flows from the lower end opening of the bulging portion 44 to the inner peripheral surface having the smallest diameter of the inclined wall portion 43 and is accelerated. Thereby, while supplying the air A from the single air blower 23, it is possible to generate the swirling air flow A1 having a high flow velocity substantially equal to that when the air blow is supplied by the two air blowers 23 and 23 of the second embodiment.
- the swirling air flow A1 can smoothly flow to the combustion region of the combustion cylinder 18. Further, the region diameter of the combustion gas G is reduced at the upper end portion in the outer cylindrical body 14, and the portion having the smaller region diameter of the combustion gas G flows along the upper end inner peripheral surface having the smallest diameter of the inclined wall portion 43. Since the surroundings are covered with the swirling air flow A1 whose swirl radius is reduced, the flame rising together with the combustion gas G is confined in the central portion of the outer cylindrical body 14 by the swirling air flow A1, and the flame Is suppressed in the radial direction of the outer cylindrical body 14.
- FIG. 9A is a longitudinal sectional view showing a solid fuel combustion apparatus according to a fifth embodiment of the present invention, in which the same or corresponding parts as those in FIG. Description to be omitted is omitted.
- the outer cylinder 25A of the combustion apparatus of this embodiment includes a cylindrical base cylinder portion 26 having a straight cylindrical center and a height substantially the same as the large diameter with respect to the combustion cylinder 18, and the base cylinder portion.
- a cylindrical guide tube portion 35 ⁇ / b> A extending integrally while continuously curving toward one side while maintaining the same diameter from the upper end of 26.
- the base cylinder part 26 is disposed concentrically with the combustion cylinder 18, and an annular ash discharge path 19 is formed between the base cylinder part 26 and the combustion cylinder 18 in plan view.
- An inner flange-shaped flow guide portion 15a is formed at the tip opening of the guide cylinder portion 35A, and a discharge port 15b is opened at the center of the flow guide portion 15a.
- the air duct 24 is fixed so as to penetrate the guide tube portion 35A in an arrangement in which air A is supplied toward the inscribed direction of the guide tube portion 35A.
- a blower 23 is connected and attached to the blower tube 24.
- the guide tube portion 35A is divided into four curved tube portions 35Aa to 33Ad, and these curved tube portions 35Aa to 35Ad are connected by, for example, welding. Accordingly, the guide cylinder portion 35A can be easily manufactured in a cylindrical shape that is continuously smoothly curved toward one side while maintaining the same diameter.
- a cylindrical fuel conveyance pipe 36 in which a screw 21 that conveys the solid fuel F is housed is fixedly supported in an arrangement penetrating one side wall of the support base 12, and supply of the fuel conveyance pipe 36 is supported. From the downstream end (the left end in the figure), a cylindrical fuel supply pipe 45 is integrally formed so as to extend upward toward the center of the combustion cylinder 18. Inside the combustion supply pipe 45, a screw 46 for supplying the solid fuel F to the inside of the combustion cylinder 18 is rotatably supported by the fuel transport pipe 36 via a bearing 47. A rotational drive motor 48 is connected.
- the ash collection box 30 is formed with a horizontal cross-sectionally elongated U-shaped cutout 30b corresponding to the horizontal cross-sectional outlines of the fuel transfer pipe 36 and the fuel supply pipe 45. Yes.
- the ash collection box 30 is accommodated inside the support base 12 without any trouble in a state in which the fuel transport pipe 36 and the fuel supply pipe 45 are inserted into the cutout portion 30b so as to be freely inserted and removed, and is placed in the upper ash discharge path 19. Can be opposed.
- a guide plate 49 is provided to guide the light.
- a lid plate 49 that opens and closes the outlet of the ash collection box 30 is rotatably attached to the support base 12 by a trillion (not shown), and the ash collection box 30 is slidably supported from below.
- a slide plate 16 is provided.
- the outer cylinder 25A has a shape in which a curved guide cylinder 35A is continuously provided above the base cylinder 26.
- the high-pressure air A ejected from the blower 23 through the blow pipe 24 in the inscribed direction of the guide cylinder portion 35A flows along the inner surface of the flow guide portion 15a and the inner peripheral surface of the curved tube portion 35Ad at the tip.
- a swirling air flow A1 is generated, and the swirling air flow A1 flows along the curved inner peripheral surface of the guide cylinder portion 35A so that the swirling air flow A1 descends smoothly while turning and reaches a location near the upper end opening of the combustion cylinder 18.
- the combustion gas flow G1 blown upwards of the combustion cylinder 18 by the combustion of the solid fuel F in the combustion cylinder 18 is surrounded by the swirling air flow A1 flowing along the inner peripheral surface of the guide cylinder portion 35A.
- the gas flows in a direction along the curved internal space of the guide cylinder portion 35A while being a spiral and reverse tornado-shaped rising airflow, and is guided to the discharge port 15b. From the discharge port 15b, a high-temperature flame is generated. Released as.
- the ash B generated by the combustion of the heavy substance or the inorganic substance blown up in the combustion gas flow G1 is generated in the opening of the combustion cylinder 18 by the centrifugal force of the rising air flow rising up the combustion gas flow A1. It is blown away from the upper side in the radial direction, hits the inner peripheral surface of the guide cylinder portion 35A in the outer cylinder 25A, reduces the kinetic energy, and falls into the annular ash discharge path 19.
- this combustion apparatus has a configuration in which the combustion gas flow G1 is ejected in the horizontal direction from the discharge port 15b of the outer cylinder 25A, when applied to the construction of an industrial plant apparatus, the connecting duct shown in FIG. It is possible to adopt a configuration in which the combustion gas flow G1 is directly fed into the heat exchanger 33 from the discharge port 15b without interposing 32. As a result, the configuration can be simplified and the cost can be reduced as much as the connection duct 32 becomes unnecessary, and the loss of heat energy when the combustion gas flow G1 passes through the connection duct 32 is avoided. Thermal energy can be used efficiently.
- FIG. 10 is a longitudinal sectional view of an essential part showing a solid fuel combustion apparatus according to a sixth embodiment of the present invention which is a modification of the fifth embodiment.
- the same or corresponding parts as those in FIG. 9A are denoted by the same reference numerals, and redundant description is omitted.
- illustration of the combustion gas G, the combustion gas flow A1, and the solid fuel F is omitted because it is the same as FIG.
- the outer cylinder 25B in the combustion apparatus of this embodiment includes a cylindrical base cylinder portion 26 having a straight cylindrical center and a height substantially the same as the large diameter with respect to the combustion cylinder 18, and the base cylinder portion.
- a cylindrical guide tube portion 35B that is continuously curved toward one side while being gradually reduced in diameter from the upper end of 26 is integrally provided.
- the guide tube portion 35B is divided into five curved tube portions 35Ba to 33Be, and these curved tube portions 35Ba to 35Be are connected by, for example, welding.
- the guide cylinder part 35B can be easily manufactured into a cylindrical shape that curves smoothly and smoothly toward one side while gradually decreasing in diameter.
- the combustion apparatus of this embodiment can obtain the same effect as described in the fifth embodiment of FIG. 9, and in addition, the diameter of the base cylinder portion 26 of the exterior cylinder 25B can be increased. Since the combustion cylinder 18 can be set to a large volume, a high combustion calorie can be obtained by putting more solid fuel F into the combustion cylinder 18 having a large volume. On the other hand, since the air A is supplied to the vicinity of the tip portion having the smallest diameter of the guide tube portion 35B having a gradually decreasing diameter in the exterior tube body 25B, the air A is a curved tube having the smallest diameter of the guide tube portion 35B. By flowing along the inner peripheral surface of the portion 35Be, the swirl air flow A1 having a fast swirl speed is obtained.
- the swirling air flow A1 descends at a high speed in the guide cylinder portion 35B due to a fast swirling speed, and almost all of the swirling air flow A1 is rapidly supplied as combustion air A2 to the combustion cylinder 18.
- the combustion efficiency in the combustion region is further improved.
- the present invention is not limited to the contents shown in the above embodiment, and various additions, modifications, or deletions are possible within the scope not departing from the gist of the present invention. It is included within the scope of the present invention.
- the solid fuel combustion apparatus of the present invention can always produce a high-temperature combustion gas by burning a solid fuel such as cheap wood chips, wood chips or RPF with high efficiency over a long period of time, such as petroleum or heavy oil. Without using gaseous fuel such as liquid fuel or natural gas, it is possible to supply high-temperature combustion gas required for various industrial applications such as air conditioning.
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Abstract
Description
繁に行う必要がある。
2,18 燃焼筒体
3 灰収集空間
7b,14a,15a 流動ガイド部
7a,14b,15b 放出口
9,23 送風機
10 加熱用容器(容器)
11 受け部材
12 支持台
19 灰排出路
22,45 燃料供給管
26 基体筒部
30 灰収集箱
35A,35B ガイド筒部
F 固形燃料
A 空気
A1 旋回空気流
A2 燃焼用空気流
Claims (6)
- 円筒状の外装筒体の内部に、当該外装筒体よりも径および高さが共に小さい円筒状の燃焼筒体が同心状に配置されて、当該外装筒体の下部内周面と当該燃焼筒体の外周面との間に環状の灰収集空間が設けられ、
前記外装筒体の上端部に、当該外装筒体の内接方向に向け空気を送給する配置で送風機が取り付けられているとともに、送給された前記空気を上方への流動を阻止して前記外装筒体の内周面に沿って流動させる内鍔形状の流動ガイド部が設けられ、且つ当該流動ガイド部の中央部に燃焼ガスの放出口が形成され、
固形燃料を前記燃焼筒体の内部で燃焼させることを特徴とする固形燃料の燃焼装置。 - 少なくとも前記外装筒体および前記燃焼筒体のうちの少なくとも当該外装筒体が有底円筒状に形成され、前記流動ガイド部の上面における前記放出口の周囲箇所に、容器を支持する受け部材が設けられ、
前記燃焼筒体が、前記外装筒体の高さの20%~60%の範囲内の高さに設定されている請求項1記載の固形燃料の燃焼装置。 - 円筒状の外装筒体の内部に、当該外装筒体よりも径および高さが共に小さい円筒状の燃焼筒体が同心状に配置されて、当該外装筒体の下部内周面と当該燃焼筒体の外周面との間に環状の灰排出路が設けられ、
前記外装筒体の上端部に、当該外装筒体の内接方向に向け空気を送給する配置で送風機が取り付けられ、且つ送給された前記空気を上方への流動を阻止して前記外装筒体の内周面に沿って流動させる内鍔状の流動ガイド部が設けられ、当該流動ガイド部の中央部に燃焼ガスの放出口が形成され、
前記燃焼筒体の下端部に、固形燃料の燃料供給管が連通して連結され、
前記外装筒体が載置固定された支持台の内部における前記灰排出路の下方箇所に、灰を回収するための灰収集箱が前記支持台に出入自在に配置されていることを特徴とする固形燃料の燃焼装置。 - 前記燃料供給管が、前記外装筒体および前記燃焼筒体の各々の側壁をそれぞれ貫通して、当該燃焼筒体の内接方向に向け固形燃料を供給する配置で当該燃焼筒体に臨入されている請求項3記載の固形燃料の燃焼装置。
- 直線の筒心を有する円筒状の基体筒部と、当該基体筒部の上端開口から一側方へ向けて連続的に湾曲しながら延びる円筒状のガイド筒部とが一体に連設されてなる外装筒体を有し、
前記基体筒部の内方側に、当該基体筒部よりも径の小さい円筒状の燃焼筒体が同心状に配置されて、当該基体筒部の内周面と当該燃焼筒体の外周面との間に環状の灰排出路が設けられ、
前記ガイド筒部の先端部に、当該ガイド筒部の内接方向に向け空気を送給する配置で送風機が取り付けられ、且つ送給された前記空気を前記ガイド筒部の内周面に沿って流動するようガイドして旋回空気流を発生させる内鍔状の流動ガイド部が設けられ、当該流動ガイド部の中央部に、前記燃焼筒体から上昇してきた燃焼ガスを一側方へ向け放出する放出口が形成され、
前記燃焼筒体の下端部に、固形燃料の燃料供給管が連通して連結され、
前記外装筒体が載置固定された支持台の内部における前記灰排出路の下方箇所に、灰を回収するための灰収集箱が前記支持台に出入自在に配置されていることを特徴とする固形燃料の燃焼装置。 - 前記ガイド筒部は、前記基体筒部の上端開口から同一径を保ちながら一側方へ向けて連続的に湾曲しながら延びる円筒状または前記基体筒部の上端開口から徐々に径が小さくなりながら一側方へ向けて連続的に湾曲しながら延びる円筒状の何れかの形状を有している請求項5に記載の固形燃料の燃焼装置。
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JPS5794030U (ja) * | 1980-11-21 | 1982-06-09 | ||
JPS57150337U (ja) * | 1981-03-16 | 1982-09-21 | ||
JPS6086308A (ja) * | 1983-10-17 | 1985-05-15 | Japan Steel Works Ltd:The | 固形燃料の燃焼装置 |
JP2004518932A (ja) * | 2000-11-22 | 2004-06-24 | シーディーエス グローバルカンパニーリミテッド | 炉内の気流を用いる遠心燃焼方法 |
JP2005512005A (ja) * | 2001-12-05 | 2005-04-28 | グォン ギュ ソン | 高温改質強旋回焼却炉 |
JP2009085523A (ja) * | 2007-09-29 | 2009-04-23 | Miike Iron Works Co Ltd | バーナ |
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JP2011127843A (ja) | 2011-06-30 |
JP4794018B2 (ja) | 2011-10-12 |
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