JP7076657B1 - Combustion furnace - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an incinerator capable of high-temperature incineration of a combustion-processed product and suppressing the generation of harmful substances. SOLUTION: A combustion furnace 1 is arranged in a housing 2 having a combustion chamber 20 inside, a blower 3 for sending combustion air A to a combustion chamber 20 through an air passage 8, and a first air passage 8. It has a magnetic passage 5 and a second magnetic passage 6, and a blowing portion 21 installed in the combustion chamber 20 to supply combustion air A. The blowing portion 21 has a support shaft 22 and a rotating portion 23 rotatably provided on the support shaft 22 to blow out the combustion air A. The combustion air A passes through the first magnetic passage and the second magnetic passage, and is supplied from the rotating portion 23 to the combustion chamber 20. The rotating portion 23 rotates with respect to the support shaft 22 due to the thrust blown out by the combustion air A. [Selection diagram] Fig. 2

Description

The present invention relates to a combustion furnace.

In a combustion furnace for incinerating combusted products, a high temperature incinerator is used, which is set to a high temperature of 800 ° C or higher in order to thermally decompose harmful substances such as dioxin. A lot of fuel is required to keep it, and the running cost is high. In addition, when a combusted product containing water is burned, the combustion temperature may drop and harmful substances may be generated.

In the incinerator of Patent Document 1, harmful substances are detoxified by a catalyst even at a low temperature of 800 ° C. or lower. Since the catalyst is deteriorated by high-temperature exhaust gas, the life of the catalyst can be extended by cooling the exhaust gas before passing through the catalyst. Low-temperature incinerator can reduce the amount of fuel used, so running costs are expected to be reduced.

In the incinerator of Patent Document 2, smoke, odor, or both can be removed by ceramic by sending the combustion gas after combustion to the combustion gas treatment device to remove water and passing through the passage portion. A plurality of ceramics, which are plate-shaped members having a plurality of holes formed therein, are laminated in the passage portion, and the combustion gas after combustion passes through the holes of the plate-shaped member.

Japanese Unexamined Patent Publication No. 2016-200352 Japanese Unexamined Patent Publication No. 2010-281486

However, in the combustion furnace described in Patent Document 1 or Patent Document 2, a large amount of smoke is generated depending on the type of the incinerator, so it is necessary to perform high temperature incineration. High-temperature incinerator requires a large amount of fuel for combustion, which increases running costs. When low-temperature incinerator is performed, the incinerator remains as an incinerator residue with incomplete combustion, and an afterburner, a filter device, etc. for removing harmful substances from the combustion gas are required, which increases the introduction cost.

In order to thermally decompose dioxin contained in the combustion gas, it is desirable that the temperature in the furnace is 800 ° C. or higher and the residence time is 2 seconds or longer. In order to keep the temperature in the combustion chamber at 800 ° C or higher, fuel is supplied and a burner is used to maintain a high temperature state, but there is a demand for an incinerator that can maintain a high temperature state at low cost. rice field.

Therefore, an object of the present invention is to provide an incinerator capable of high-temperature incineration of a combustion-processed product and suppressing the generation of harmful substances.

In order to solve the above problems, in the first invention, a housing having a combustion chamber inside, a blower that sends combustion air to the combustion chamber through an air passage, and a magnet arranged in the air passage are provided. It has an installed magnetic passage and an outlet portion installed in the combustion chamber to supply the combustion air, and the outlet portion is rotatably provided on a support shaft and the support shaft for the combustion. It has a rotating portion through which air is blown out, and the combustion air passes through the magnetic passage in which the magnet is installed, is supplied from the rotating portion to the combustion chamber, and is supplied by the thrust force blown out by the combustion air. The rotating portion rotates with respect to the support shaft, the combustion chamber is provided with an exhaust port from which the air after combustion is discharged, and the outlet portion is provided with the combustion air outward in the radial direction of the support shaft. The first holding portion further has a first holding portion that is blown out, and the first holding portion is installed at a position closer to the exhaust port than the rotating portion on the support shaft, and is located on the rotating portion side in a plane orthogonal to the support shaft. Provided is a combustion furnace characterized in that the combustion air is blown out in an inclined direction .

In the second invention , in the combustion furnace of the first invention , the blowing portion further has a second holding portion for blowing out the combustion air outward in the radial direction of the support shaft, and the second holding portion is further provided. The portion is installed at a position closer to the exhaust port than the first holding portion on the support shaft, and is characterized in that the combustion air is blown out in a direction inclined toward the rotating portion on a plane orthogonal to the support shaft. It is supposed to be.

The third invention is the combustion furnace of the first invention or the second invention , in which the magnetic passage holds the magnet at a predetermined distance from the first base that holds the magnet and the first base. The second base is installed in the air passage, and the combustion air passes through the passage between the first base and the second base.

The fourth invention is the combustion furnace of the first invention or the second invention , in which the magnetic passage has a double pipe structure and has an outer pipe and an inner pipe, and the inner pipe has an outer pipe and an inner pipe. Is characterized in that a wall is provided in a spiral shape, the outer pipe is provided with the magnet, and the combustion air passes through a groove between the inner pipe and the outer pipe.

Fifth invention has a housing provided with a combustion chamber inside, a blower for sending combustion air to the combustion chamber through an air passage, a magnetic passage arranged in the air passage and provided with a magnet, and the combustion chamber. The outlet is provided with a support shaft and a rotating portion rotatably provided on the support shaft to blow out the combustion air. The combustion air passes through the magnetic passage in which the magnet is installed, is supplied from the rotating portion to the combustion chamber, and the rotating portion rotates with respect to the support shaft by the thrust force blown out by the combustion air. An ion portion containing a ceramic material is provided on either the intake side or the exhaust side of the blower, and the combustion air passes through the ion portion and is supplied to the combustion chamber by the blower. We provide a combustion furnace.

According to the first invention, the combustion air is supplied while rotating by the rotating portion, so that a rotating air flow centered on the support shaft is generated in the housing. This rotating airflow can improve the combustion efficiency of the combustion chamber and completely burn the combusted product at a high temperature, and can suppress the generation of harmful substances and the combustion residue. Further, since the combustion processed product itself burns at a high temperature, it is not necessary to drop additional fuel to maintain the temperature, and the running cost can be reduced. Further, since the rotating portion is rotated by the thrust generated by the combustion air, a device for rotating the rotating portion becomes unnecessary, and the cost can be reduced. Further, since the combustion air passes through the magnetic passage and is supplied to the housing, the flow of air when passing through the magnetic passage is curved by the magnet when passing through the magnetic passage. As a result, the flow of combustion air is supplied into the housing in an unstable state, so that the combustion efficiency of the combustion chamber can be improved and the combustion processed product can be completely burned at a high temperature, and harmful substances are generated and burned. The residue can be suppressed.

According to the second invention, since the first holding portion blows out combustion air in a direction inclined toward the rotating portion in a plane orthogonal to the support axis, it suppresses the outflow of the rotating air flow generated by the rotating portion to the exhaust port. And let the combustion air stay in the combustion chamber for a long time. As a result, the combustion efficiency of the combustion chamber can be improved, and the combusted product can be completely burned at a high temperature, and the generation of harmful substances and the combustion residue can be suppressed.

According to the third invention, since the second holding portion blows out combustion air in a direction inclined toward the rotating portion in a plane orthogonal to the support axis, the second holding portion is generated by the rotating portion by the first holding portion and the second holding portion. It suppresses the outflow of the rotating airflow to the exhaust port and keeps the combustion air in the combustion chamber for a long time. As a result, the combustion efficiency of the combustion chamber can be improved, and the combusted product can be completely burned at a high temperature, and the generation of harmful substances and the combustion residue can be suppressed.

According to the fourth invention, the combustion air passes through the passage between the first base and the second base holding the magnet, so that the magnet causes the air flow to bend when passing through the passage. As a result, the flow of combustion air is supplied into the housing in an unstable state, so that the combustion efficiency of the combustion chamber can be improved and the combustion processed product can be completely burned at a high temperature, and harmful substances are generated and burned. The residue can be suppressed.

According to the fifth invention, the combustion air passes through the groove between the outer tube holding the magnet and the inner tube provided with the spiral wall, so that the air flow is curved by the magnet when passing through the groove. do. As a result, the flow of combustion air is supplied into the housing in an unstable state, so that the combustion efficiency of the combustion chamber can be improved and the combustion processed product can be completely burned at a high temperature, and harmful substances are generated and burned. The residue can be suppressed.

According to the sixth invention, since an ion portion containing a ceramic material is provided on either the intake side or the exhaust side of the blower, the housing contains various ions in the combustion air. Can be supplied. As a result, the combustion efficiency of the combustion chamber can be improved, and the combusted product can be completely burned at a high temperature, and the generation of harmful substances and the combustion residue can be suppressed.

According to the present invention, it is possible to provide an incinerator capable of high-temperature incineration of a combustion-processed product and suppressing the generation of harmful substances.

The external view of the combustion furnace of this invention. The figure which shows the structure of the combustion furnace of this invention. Sectional drawing of the housing of the combustion furnace of this invention. Sectional drawing of the housing of the combustion furnace of this invention. An exploded perspective view of the ceramic part of the combustion furnace of the present invention. The perspective view of the 1st magnetic passage of the combustion furnace of this invention. The side view of the 1st magnetic passage of the combustion furnace of this invention. Sectional drawing of the 2nd magnetic passage of the combustion furnace of this invention. The operation flowchart of the combustion furnace of this invention.

The combustion furnace 1 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 9. As shown in the figure, the vertical and horizontal directions are defined. The combustion furnace 1 has a housing 2, a blower 3, an ion unit 4, a first magnetic passage 5, a second magnetic passage 6, a control panel 7, and an air passage 8. In the combustion furnace 1, the combustion air A taken in by the blower 3 via the ion unit 4 is supplied to the housing 2 through the first magnetic passage 5 and the first magnetic passage 5 installed in the air passage 8. To. The combustion furnace 1 can process the combusted product at a high temperature of 1000 ° C. or higher with almost no fuel for combustion. In the combustion furnace 1 of the present embodiment, wood tar F containing a large amount of impurities generated as a by-product by biomass power generation is used as a combustion treated product, but the combustion treated product is not limited to this, and any waste or treated product is used to generate harmful substances. Can be suppressed and burned.

The housing 2 is made of a substantially cylindrical heat-resistant ceramic cement having a predetermined wall thickness, an exhaust port 2a is formed on the housing 2, and a combustion chamber 20 is defined inside as shown in FIG. A discharge unit 20A for discharging the combustion residue burned in the combustion chamber 20 is provided in the lower part of the housing 2, and the inside of the combustion chamber 20 can be accessed by opening the door of the discharge part 20A. Although the upper part of the housing 2 is open, power may be generated by recovering the heat generated by combustion and operating the steam turbine by a boiler.

In the center of the combustion chamber 20, a blowout portion 21 extending in the vertical direction and ejecting the combustion air A from the blower 3 is provided. The outlet portion 21 includes a support shaft 22, a rotating portion 23, a first outlet 24, and a second outlet 25. Each member of the blowout portion 21 is made of a nickel-based or cobalt-based heat-resistant alloy, but since it is cooled by the flow of combustion air A inside each member, deterioration due to incinerator heat can be suppressed. can. The first outlet 24 is an example of the first holding portion of the present invention, and the second outlet 25 is an example of the second holding portion of the present invention.

The support shaft 22 is a substantially cylindrical shaft extending in the vertical direction, and the combustion air A that has passed through the ion portion 4, the first magnetic passage 5, and the second magnetic passage 6 is supplied by the blower 3. As shown in FIG. 3, a shaft passage 22A is defined inside the support shaft 22.

The rotating portion 23 is arranged below the support shaft 22 and is rotatable in the circumferential direction of the support shaft 22. The rotating portion 23 is provided substantially symmetrically with the first ejection port 23A for discharging the combustion air A in the substantially tangential direction of the cylindrical support shaft 22 and the first ejection port 23A with respect to the center of the support shaft 22. It also has a second spout 23B. When the combustion air A from the blower 3 is supplied to the rotating portion 23, the rotating portion 23 rotates counterclockwise when viewed from above due to thrust. As the rotating portion 23 rotates about the support shaft 22 while ejecting the combustion air A, a counterclockwise rotary updraft U is generated above the rotating portion 23 in the combustion chamber 20 as shown in FIG. do. The rotation direction of the rotating portion 23 may be clockwise. Considering the influence of the rotation of the earth in order to burn the combustion processed material efficiently, it is desirable that it is counterclockwise in the northern hemisphere and clockwise in the southern hemisphere.

The first outlet 24 is provided above the rotating portion 23, and as shown in FIG. 4, combustion air A is blown out from both ends of the substantially pipe shape toward the radial outward side of the support shaft 22. .. At this time, as shown in FIG. 2, the combustion air A is ejected from the first outlet 24 so as to be oblique downward at 45 °. In other words, the combustion air A blown out from the first outlet 24 is inclined toward the rotating portion 23, not the exhaust port 2a side, with respect to the plane 24P orthogonal to the support shaft 22 shown by the alternate long and short dash line in FIG. It is blown out in the direction. The injection angle of the first outlet 24 is not limited to an oblique downward angle of 45 °, and may be a direction inclined downward from the horizontal direction, that is, a direction away from the exhaust port 2a.

The second outlet 25 has substantially the same shape as the first outlet 24, and is provided above the first outlet 24. The second outlet 25 has a substantially pipe shape extending in a direction orthogonal to the first outlet 24, and combustion air A is ejected from both ends toward the radial outward side of the support shaft 22. At this time, as shown in FIG. 2, the combustion air A is ejected from the second outlet 25 so as to have a downward oblique angle of 45 °. In other words, the combustion air A blown out from the second outlet 25 is inclined toward the rotating portion 23, not the exhaust port 2a side, with respect to the plane 25P orthogonal to the support shaft 22 shown by the alternate long and short dash line in FIG. It is blown out in the direction. The injection angle of the second outlet 25 is not limited to a downward oblique angle of 45 °, and may be a direction inclined downward from the horizontal direction, that is, a direction away from the exhaust port 2a.

A burner 26 is provided on the bottom surface of the housing 2 in the vicinity of the rotating portion 23. The burner 26 is provided for ignition at the start of operation of the combustion furnace 1, and may be stopped after a predetermined time has elapsed from the start of operation depending on the type of the combustion processed product. This reduces the fuel used by the burner 26 and enables the operation of the combustion furnace 1 at low cost.

On the lower side wall of the housing 2, a nozzle 27 for supplying the wood tar F, which is a combustion processed product, to the combustion chamber 20 is provided. The nozzle 27 is connected to a fuel tank (not shown), and wood tar F is sprayed into the combustion chamber 20 at regular intervals by a pressure pump and a solenoid valve 28. A heater is installed in the fuel tank, and the supplied wood tar F is heated to 60 ° C. In the present embodiment, since the combustion-processed material is a viscous liquid, the combustion-processed material is supplied to the combustion chamber 20 by spraying with the nozzle 27, but when the combustion-processed material is a solid material, it is exhausted by a conveyor or the like. It may be supplied from 2a.

A temperature sensor 29 electrically connected to the control panel 7 is provided on the side wall of the housing 2 to display the combustion temperature in the combustion chamber 20. The solenoid valve 28 may be controlled to adjust the supply amount of the wood tar F based on the temperature detected by the temperature sensor 29.

The blower 3 is a vacuum blower and is used to supply the combustion air A to the housing 2. The vacuum pressure of the vacuum blower of the present embodiment is set to 20 kPa, but any value can be set according to the scale of the combustion furnace 1, the input amount of the wood tar F, the shape of the housing 2, and the like. ..

As shown in FIG. 5, the ion portion 4 is composed of an outer cylinder 41, an inner cylinder 42, and a ceramic ball 43. In the ion portion 4, a large number of ceramic balls 43 are enclosed in the inner cylinder 42 and fixed to the outer cylinder 41. The ion portion 4 is arranged at the intake port of the blower 3, and the air sucked by the blower 3 passes through the gap between the outer cylinder 41 and the inner cylinder 42 and the gap between the ceramic balls 43. The material enclosed in the inner cylinder 42 is not limited to the ceramic ball 43, and the shape is not limited as long as it is a ceramic material. The ceramic ball 43 is an example of the ceramic material of the present invention. Although the ion portion 4 is arranged on the intake side of the blower 3, it may be arranged on the exhaust side or may be arranged on both sides.

The components of the ceramic ball 43 are not particularly limited, and examples thereof include various oxides, nitrides, carbides, borides, and other compounds. For example, ceramic components such as aluminum oxide, calcium oxide, magnesium oxide, zirconium oxide, titanium oxide, molten silica, unmelted silica, spinel, cordierite, forsterite, zircon and murite, aluminum nitride, zirconium nitride, titanium nitride, boron nitride. , Aluminum Carbide, Calcium Carbide, Silicon Carbide, Zirconium Carbide, Titanium Carbide, Tungsten Carbide, Zirconium Bolt, Titanium Bolt, Tungsten Bode, Aluminum Titanium and Aluminum Tirconate Titanium. These may be contained alone or may contain two or more kinds. When two or more kinds are contained, for example, clay containing at least one of various clay minerals such as kaolinite, halloysite, smectite, pyrophyllite, sericite and talc as a main component, and these. Examples thereof include fire-resistant ceramics obtained by firing a chamotte made of clay as a raw material.

The term "main component" as used herein means that, when the ceramic ball 43 is 100% by mass, the above-mentioned predetermined ceramic component is used alone in the case of one type, and the total is 50% by mass in the case of two or more types. It means that it contains the above. That is, in the case of one type, the predetermined ceramic component is 100% by mass. This content is the content of this ceramic component when only one kind of predetermined ceramic component is contained, and when two or more kinds of predetermined ceramic components are contained, the total of these ceramic components. The content.

As the ceramic ball 43, those subjected to various treatments in order to improve the erosion property may be used. Examples of the various treatments include various treatments for improving corrosion resistance. That is, a corrosion-resistant layer formed by coating (zirconia coat layer, calcia coat layer, etc.), a corrosion-resistant layer formed by impregnation (a layer in which zirconia, calcia, etc. are fixed on the surface of the base material) and the like can be mentioned. The impregnated corrosion-resistant layer is obtained by immersing a base material in an aqueous solution of a water-soluble organometallic compound (calcium acetate, etc.) containing a metal element such as Ca (Zr, Mg, etc.) and impregnating the base material with the aqueous solution. After that, a layer in which the metal oxide is fixed on the surface of the base material by heating, or similarly immersed in an alumina sol to impregnate the base material with the alumina sol, and then heated to fix the alumina on the surface of the base material. It is a layer that has been made to. The ceramic ball 43 may be either a castable material or a natural material. Further, when it is a castable material, it may be made of only cement, or may contain ceramic fibers and / or ceramic fillers. The porosity of the ceramic ball 43 can be arbitrarily set according to the resistance at the suction port of the blower 3.

The value of the ceramic balls 43 as measured by the ion measuring instrument of one ceramic ball 43 may be 500 [pieces / cc] or more, and more preferably 1000 [pieces / cc] or more. Since the ion portion 4 is installed at the suction port of the blower 3, the combustion air A contains various ions such as negative ions as the air passes through the gaps of the ceramic balls 43.

As shown in FIG. 2, the first magnetic passage 5 is installed in the passage between the blower 3 and the housing 2. As shown in FIG. 6, the first magnetic passage 5 has a first base 51, a second base 52, and a magnet 53. The first base 51 and the second base 52 are made of stainless steel. The first base 51 is separated from the second base 52 by a passage H, and contains a plurality of magnets 53. The total magnetic flux density of the magnet 53 of the first base 51 and the second base 52 is 140,000 gauss, but an arbitrary magnetic flux density can be set according to the capacity of the blower 3 and the scale of the combustion furnace 1. As the magnet 53, a neodymium magnet using a rare earth element or a permanent magnet such as a samarium-cobalt magnet may be used. In the present embodiment, the width of the passage H is 6 mm and the width of the first base 51 is 70 mm, but the present invention is not limited to this. Since the combustion air A discharged from the blower 3 is throttled in the passage H of the first magnetic passage 5, the pressure and temperature rise.

As shown in FIG. 7, the magnet 53 is provided at a position corresponding to the first base 51 and the second base 52 with the passage H interposed therebetween, and the S pole and the N pole are arranged in a predetermined order. The air flowing through the aisle H is curved in a certain direction by utilizing the repulsive action caused by sandwiching the passage H with the SS or NN and the suction action caused by facing the passage H with the SN. Due to the strong magnetic field of the magnet 53, the air behaves like a kind of magnetic fluid and is therefore attracted to the magnet 53. This is because oxygen contained in air has an exceptionally large magnetic susceptibility (paramagnetism). The combustion air A has a zigzag shape that is close to the first base 51 in the passage H, then close to the second base 52, close to the first base 51 again, and close to the second base 52. It passes through the magnetic passage 5. The arrangement of the poles of the magnet 53 is set so that the combustion state of the combustion chamber 20 is optimized.

As shown in FIG. 2, the second magnetic passage 6 is installed in the air passage 8 between the first magnetic passage 5 and the housing 2. As shown in FIG. 8, the second magnetic passage 6 includes an outer shell 61, a screw 62, and a magnet 63. The outer shell 61 has a predetermined wall thickness, and a plurality of magnets 63 are arranged inside. The combustion air A flows in the second magnetic passage 6 along the groove 62a of the screw 62. The outer shell 61 is an example of the outer tube of the present invention, and the screw 62 is an example of the inner tube of the present invention.

The magnets 63 are installed at two positions 180 ° apart in the circumferential direction of the screw 62, and have a magnetic flux density of 80,000 gauss in the entire second magnetic passage 6. Similar to the magnet 53, the magnet 63 utilizes the repulsive action of facing the passage H across the SS or NN and the suction action of facing the passage H of the SN to face the air flowing through the groove 62a. Is curved in a certain direction. Specifically, the combustion air A swirls in the groove 62a. In the present embodiment, by arranging the poles of the magnet 63 in a preset arrangement, the air flowing through the groove 62a can be efficiently agitated.

The control panel 7 is provided with a control unit (not shown), which controls the supply of the wood tar F to the housing 2 and the ignition and extinguishing of the burner 26, and the detection result of the temperature sensor 29 is displayed on the panel 71. Is displayed. The control panel 7 is provided with a lever 72 for starting / stopping the blower 3 and a pilot lamp 73 that lights up when the blower 3 is operated.

Next, the operation flow of the combustion furnace 1 will be described with reference to FIG. When operating the combustion furnace 1, the operator turns on the power of the control panel 7 and operates the lever 72 to start the blower 3 (S1). As a result, the rotating portion 23 rotates counterclockwise around the support shaft 22, and the combustion air A is ejected diagonally downward from the first outlet 24 and the second outlet 25. The burner 26 automatically ignites after a predetermined time has elapsed since the blower 3 was started (S2).

After a predetermined time has elapsed from the ignition of the burner 26, the pressure pump for supplying the wood tar F operates, the solenoid valve 28 opens, and fuel is supplied to the housing 2 (S3). Since the wood tar F is sprayed from the nozzle 27, it is ignited and burned by the flame of the burner 26. At this time, the wood tar F thrown into the housing 2 rises upward due to the counterclockwise rotational updraft U generated by the rotating portion 23 while burning, and is oblique from the first outlet 24 and the second outlet 25. Since the combustion air A ejected downward pushes the combustion air downward, the combustion air A stays in the housing 2 for a long time and a turbulent airflow is partially generated in the housing 2 detected by the temperature sensor 29. The temperature of the above reaches 1500 ° C or higher, and the maximum is 1800 ° C.

The control panel 7 includes a timer, and after a certain period of time has elapsed since the solenoid valve 28 was opened, the solenoid valve 28 is opened again to supply the wood tar F to the housing 2 (S4: YES). If a certain time has not passed since the solenoid valve 28 was opened (S4: NO), it is determined whether or not the lever 72 has operated the stop of the blower 3. When the blower 3 is stopped by the lever 72 (S5: YES), the pressure pump is stopped and the supply of the wood tar F is stopped (S6). When a predetermined time has elapsed from the stop of the pressure pump and the wood tar F in the housing 2 is completely burned, the burner 26 and the blower 3 are stopped (S7, S8).

According to such a configuration, the combustion air A is supplied while being rotated by the rotating portion 23, so that a rotating updraft U centered on the support shaft 22 is generated in the housing 2. The rotating updraft U can improve the combustion efficiency of the combustion chamber 20 and completely burn the wood tar F at a high temperature, and can suppress the generation of harmful substances and the combustion residue. Further, since the wood tar F itself burns at a high temperature, it is not necessary to drop additional fuel to maintain the temperature, and the running cost can be reduced. Further, since the combustion air A passes through the first magnetic passage 5 and the second magnetic passage 6 and is supplied to the housing 2, the air flow is curved by the magnet 53 and the magnet 63 at the time of passing. As a result, the flow of the combustion air A is supplied into the housing 2 in an unstable state, so that the combustion efficiency of the combustion chamber 20 can be improved and the wood tar F can be completely burned at a high temperature, which is a harmful substance. And combustion residue can be suppressed.

According to such a configuration, the first outlet 24 blows out the combustion air A in the direction inclined toward the rotating portion 23 on the plane 24P orthogonal to the support shaft 22, so that the rotating updraft U generated by the rotating portion 23 is generated. The outflow to the exhaust port 2a is suppressed, and the combustion air A stays in the combustion chamber 20 for a long time. As a result, the combustion efficiency of the combustion chamber 20 can be improved, and the wood tar F can be completely burned at a high temperature, and the generation of harmful substances and the combustion residue can be suppressed.

According to such a configuration, since the second outlet 25 blows out the combustion air A in the direction inclined toward the rotating portion 23 on the plane 25P orthogonal to the support shaft 22, the first outlet 24 and the second outlet 25 are blown out. As a result, the rotating updraft U generated by the rotating portion 23 is suppressed from flowing out to the exhaust port 2a, and the combustion air A stays in the combustion chamber 20 for a long time. As a result, the combustion efficiency of the combustion chamber 20 can be improved, and the wood tar F can be completely burned at a high temperature, and the generation of harmful substances and the combustion residue can be suppressed.

According to such a configuration, the combustion air A passes through the passage H between the first base 51 and the second base 52 holding the magnet 53, and therefore, when passing through the passage H, the magnet 53 passes through the first magnetic passage. 5 The air flow at the time of passing is curved. As a result, the flow of the combustion air A is supplied into the housing 2 in an unstable state, so that the combustion efficiency of the combustion chamber 20 can be improved and the wood tar F can be completely burned at a high temperature, which is a harmful substance. And combustion residue can be suppressed.

According to such a configuration, the combustion air A passes through the groove 62a between the outer shell 61 holding the magnet 63 and the screw 62 provided with the spiral wall, and therefore, when passing through the second magnetic passage 6. The magnet 63 bends the air flow. As a result, the flow of the combustion air A is supplied into the housing 2 in an unstable state, so that the combustion efficiency of the combustion chamber 20 can be improved and the wood tar F can be completely burned at a high temperature, which is a harmful substance. And combustion residue can be suppressed.

According to such a configuration, since the ion portion 4 in which the ceramic balls 43 are housed is provided on the intake side of the blower 3, the combustion air A is supplied to the combustion chamber 20 in a state where various ions are contained. be able to. As a result, the combustion efficiency of the combustion chamber 20 can be improved, and the wood tar F can be completely burned at a high temperature, and the generation of harmful substances and the combustion residue can be suppressed.

The combustion furnace according to the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the gist of the invention described in the claims.

The combustion furnace of the present invention can be used as a combustion furnace for completely burning a combusted product and suppressing emission of harmful substances.

1 Combustion furnace 2 Housing 3 Blower 4 Ion section 5 1st magnetic passage 6 2nd magnetic passage 7 Control panel 8 Air passage 20 Combustion chamber 21 Blowout section 22 Support shaft 23 Rotating section 24 1st outlet 25 2nd outlet 41 Outer cylinder 42 Inner cylinder 43 Ceramic ball 51 First base 52 Second base 53 Magnet 61 Outer shell 62 Screw 63 Magnet

Claims (5)

A housing with a combustion chamber inside and
A blower that sends combustion air to the combustion chamber through an air passage,
A magnetic passage arranged in the air passage and equipped with a magnet,
It has an outlet that is installed in the combustion chamber and supplies the combustion air.
The blowing portion has a support shaft and a rotating portion rotatably provided on the support shaft to blow out the combustion air.
The combustion air passes through the magnetic passage in which the magnet is installed, and is supplied from the rotating portion to the combustion chamber.
The thrust of the combustion air causes the rotating portion to rotate with respect to the support shaft.
The combustion chamber is provided with an exhaust port through which air after combustion is discharged.
The blowout portion further has a first holding portion for blowing out the combustion air outward in the radial direction of the support shaft.
The first holding portion is installed at a position closer to the exhaust port than the rotating portion on the support shaft, and blows out the combustion air in a direction inclined toward the rotating portion on a plane orthogonal to the support shaft. Combustion furnace featuring . The blowout portion further has a second holding portion for blowing out the combustion air outward in the radial direction of the support shaft.
The second holding portion is installed at a position closer to the exhaust port than the first holding portion on the support shaft, and the combustion air is introduced in a direction inclined toward the rotating portion on a plane orthogonal to the support shaft. The combustion furnace according to claim 1 , wherein the combustion furnace is blown out. In the magnetic passage, a first base for holding the magnet and a second base for holding the magnet at a predetermined distance from the first base are installed in the air passage, and the combustion air is the first. The combustion furnace according to claim 1 or 2 , wherein the combustion furnace passes through a passage between the base and the second base. The magnetic passage has a double tube structure and has an outer tube and an inner tube.
A claim characterized in that the inner pipe is provided with a spiral wall, the outer pipe is provided with the magnet, and the combustion air passes through a groove between the inner pipe and the outer pipe. Item 2. The combustion furnace according to Item 1 or 2 . A housing with a combustion chamber inside and
A blower that sends combustion air to the combustion chamber through an air passage,
A magnetic passage arranged in the air passage and equipped with a magnet,
It has an outlet that is installed in the combustion chamber and supplies the combustion air.
The blowing portion has a support shaft and a rotating portion rotatably provided on the support shaft to blow out the combustion air.
The combustion air passes through the magnetic passage in which the magnet is installed, and is supplied from the rotating portion to the combustion chamber.
The thrust of the combustion air causes the rotating portion to rotate with respect to the support shaft.
An ion portion containing a ceramic material is provided on either the intake side or the exhaust side of the blower.
A combustion furnace characterized in that the combustion air passes through the ion portion and is supplied to the combustion chamber by the blower.

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