JP2023112603A - combustion furnace - Google Patents

Abstract

To provide a combustion furnace capable of combusting a combustion processing object at a high combustion temperature, and of suppressing generation of a harmful substance.SOLUTION: A combustion furnace 1 comprises a housing 2 comprising a combustion chamber 20 therein, a blower 3 sending combustion air A to the combustion chamber 20 via an air passage 8, a first magnetic passage 5 and a second magnetic passage 6 disposed in the air passage 8, and an air blowing unit 21 disposed in the combustion chamber 20 to feed combustion air A thereinto. The air blowing unit 21 comprises a support shaft 22, and a rotor 23 rotatably attached to the support shaft 22 to blow the combustion air A. The combustion air A passes through the first magnetic passage and the second magnetic passage and is fed to the combustion chamber 20 from the rotor 23. The rotor 23 is rotated relative to the support shaft 22 by the propulsion of blowing the combustion air A.SELECTED DRAWING: Figure 2

Description

The present invention relates to combustion furnaces.

In combustion furnaces for incinerating materials to be incinerated, high-temperature incinerators set at a high temperature of 800°C or higher are used in order to thermally decompose harmful substances such as dioxins. A large amount of fuel is required to maintain it, and the running cost is high. In addition, there is a risk that the combustion temperature will drop and harmful substances will be generated if the combustion material containing moisture is burned.

In the incinerator of Patent Document 1, even at a low temperature of 800° C. or less, the catalyst renders harmful substances harmless. Since the catalyst is degraded by the high-temperature exhaust, the life of the catalyst can be extended by cooling the exhaust before passing through the catalyst. Low-temperature incineration can reduce the amount of fuel used, which is expected to reduce running costs.

In the incinerator of Patent Document 2, the combustion gas after combustion is sent to the combustion gas treatment device to remove moisture and pass through the passage, so that the ceramic can remove smoke, odor, or both. The passage portion is formed by laminating a plurality of ceramics, which are plate-like members having a plurality of holes, and combustion gas after combustion passes through the holes of the plate-like member.

JP 2016-200352 A JP 2010-281486 A

However, in the combustion furnace described in Patent Document 1 or Patent Document 2, high-temperature incineration is necessary because a large amount of smoke is generated depending on the type of incineration target. High-temperature incineration requires a large amount of fuel for combustion, increasing running costs. When low-temperature incineration is performed, incomplete combustion of the incineration target remains as incineration residue, and an afterburner, filter device, etc. are required to remove harmful substances from the combustion gas, resulting in high introduction costs.

In order to thermally decompose the 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 the high temperature state, but there is a demand for an incinerator that can maintain the high temperature state at low cost. Ta.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an incinerator capable of incinerating materials to be incinerated at a high temperature and capable of suppressing the generation of harmful substances.

In order to solve the above problems, the first aspect of the present invention is a housing having a combustion chamber inside, a blower for sending combustion air to the combustion chamber through an air passage, and a magnet disposed in the air passage. and a blow-out portion installed in the combustion chamber for supplying the combustion air, the blow-out portion being rotatably provided on the support shaft and the combustion chamber. a rotating part that blows out air, the combustion air passes through the air passage in which the magnet is installed, is supplied from the rotating part to the combustion chamber, and the thrust of the combustion air blows out, A combustion furnace is provided, wherein the rotating portion rotates with respect to the support shaft.

A second invention is the combustion furnace according to the first invention, wherein the combustion chamber is provided with an exhaust port through which air after combustion is discharged, and the blow-out portion extends radially outward of the support shaft. A first pressing portion for blowing out the combustion air is further provided, and the first pressing portion is installed on the support shaft at a position closer to the exhaust port than the rotating portion, and the first pressing portion is installed on the support shaft at a position perpendicular to the support shaft. It is characterized in that the combustion air is blown out in a direction inclined toward the rotating part.

In a third aspect of the invention, in the combustion furnace of the second aspect, the blow-out portion further includes a second pressing portion for blowing the combustion air radially outward of the support shaft, and the second pressing portion The unit is installed at a position closer to the exhaust port than the first pressing unit on the support shaft, and blows out the combustion air in a direction inclined toward the rotating unit on a plane orthogonal to the support shaft. and

A fourth invention is the combustion furnace according to any one of the first invention to the third invention, wherein the magnetic passage comprises a first base that holds the magnet, and a first base that is spaced apart from the first base by a predetermined distance. A second base for holding a magnet is mounted in the air passage, and the combustion air passes through the passage between the first base and the second base.

A fifth invention is the combustion furnace according to any one of the first invention to the third invention, wherein the magnetic passage has a double-tube structure, has an outer tube and an inner tube, and The inner tube is provided with a spiral wall, the outer tube is provided with the magnet, and the combustion air passes through a groove between the inner tube and the outer tube.

A sixth invention is the combustion furnace according to any one of the first invention to the fifth invention, wherein an ion section 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 section and is supplied to the combustion chamber by the blower.

According to the first invention, the combustion air is supplied while being rotated by the rotating portion, thereby generating a rotating airflow around the support shaft in the housing. This rotating airflow can improve the combustion efficiency of the combustion chamber and can completely burn the combusted material at a high temperature, thereby suppressing the generation of harmful substances and combustion residue. In addition, since the combusted material itself burns at a high temperature, there is no need to supply additional fuel to maintain the temperature, and running costs can be reduced. Furthermore, since the rotating part is rotated by the thrust of the combustion air, a device for rotating the rotating part is not required, and cost can be reduced. Further, since the combustion air passes through the magnetic passage and is supplied to the housing, the flow of the 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 combusted material can be completely burned at a high temperature, resulting in the generation and combustion of harmful substances. Residue can be suppressed.

According to the second aspect of the invention, since the first pressing portion blows out the combustion air in a direction inclined toward the rotating portion on the plane perpendicular to the support shaft, the rotating airflow generated by the rotating portion is suppressed from flowing out to the exhaust port. and keep 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 material to be burned can be completely burned at a high temperature, and the generation of harmful substances and combustion residue can be suppressed.

According to the third invention, since the second pressing portion blows out the combustion air in a direction inclined toward the rotating portion on the plane orthogonal to the support shaft, the pressure generated by the rotating portion is generated by the first pressing portion and the second pressing portion. To keep combustion air in a combustion chamber for a long time by suppressing rotation airflow from flowing out to an exhaust port. As a result, the combustion efficiency of the combustion chamber can be improved, and the material to be burned can be completely burned at a high temperature, and the generation of harmful substances and combustion residue can be suppressed.

According to the fourth invention, since the combustion air passes through the passage between the first base and the second base holding the magnet, the flow of air is curved by the magnet 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 combusted material can be completely burned at a high temperature, resulting in the generation and combustion of harmful substances. Residue can be suppressed.

According to the fifth invention, since the combustion air passes through the groove between the outer tube holding the magnet and the inner tube provided with the spiral wall, 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 combusted material can be completely burned at a high temperature, resulting in the generation and combustion of harmful substances. Residue can be suppressed.

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

Advantageous Effects of Invention According to the present invention, it is possible to provide an incinerator capable of high-temperature incineration of materials to be incinerated and capable of suppressing the generation of harmful substances.

1 is an external view of a combustion furnace of the present invention; FIG. The figure showing the structure of the combustion furnace of this invention. Sectional drawing of the housing|casing of the combustion furnace of this invention. Sectional drawing of the housing|casing of the combustion furnace of this invention. FIG. 2 is an exploded perspective view of the ceramic portion of the combustion furnace of the present invention; 1 is a perspective view of the first magnetic passage of the combustion furnace of the present invention; FIG. 1 is a side view of the first magnetic passage of the combustion furnace of the present invention; FIG. FIG. 4 is a cross-sectional view of the second magnetic passage of the combustion furnace of the present invention; 4 is an operation flowchart of the combustion furnace of the present invention;

A combustion furnace 1 according to an embodiment of the present invention will be described based on FIGS. 1 to 9. FIG. 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 section 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 through the ion section 4 passes through the first magnetic passage 5 and the first magnetic passage 5 installed in the air passage 8, and is supplied to the housing 2. be. The combustion furnace 1 can treat the combustion material at a high temperature of 1000° C. or higher without using almost any 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 of biomass power generation is used as the combustion treated matter, but not limited to this, any waste or treated matter may be used to generate hazardous substances. can be reduced and burned.

The housing 2 is made of a substantially cylindrical heat-resistant ceramic cement having a predetermined thickness, has an exhaust port 2a formed thereon, and defines a combustion chamber 20 therein, as shown in FIG. A discharge section 20A for discharging 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 section 20A. Although the upper part of the housing 2 is open, electricity may be generated by recovering heat generated by combustion and operating a steam turbine with a boiler.

At the center of the combustion chamber 20, a blowing part 21 is provided that extends vertically and blows out the combustion air A from the blower 3. As shown in FIG. The blowout portion 21 includes a support shaft 22 , a rotating portion 23 , a first blowout port 24 and a second blowout port 25 . Each member of the blowout part 21 is made of a nickel-based or cobalt-based heat-resistant alloy, and since the inside of each member is cooled by the flow of the combustion air A, deterioration due to incineration heat can be suppressed. can. The first outlet 24 is an example of the first pressing portion of the present invention, and the second outlet 25 is an example of the second pressing portion of the present invention.

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

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 part 23 is provided with a first jet port 23A that discharges the combustion air A in a substantially tangential direction of the cylindrical support shaft 22, and is provided substantially symmetrically with the first jet port 23A with respect to the center of the support shaft 22. and a second ejection port 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 the thrust. As the rotating part 23 rotates around the support shaft 22 while blowing out the combustion air A, a counterclockwise rotating updraft U is generated above the rotating part 23 in the combustion chamber 20 as shown in FIG. do. Note that the rotation direction of the rotating portion 23 may be clockwise. Considering the influence of the earth's rotation in order to efficiently burn the material to be incinerated, it is desirable that the rotation be counterclockwise in the northern hemisphere and clockwise in the southern hemisphere.

The first blowout port 24 is provided above the rotating part 23, and as shown in FIG. . At this time, as shown in FIG. 2, the combustion air A is jetted from the first outlet 24 so as to be inclined downward at an angle of 45°. In other words, the combustion air A blown out from the first blowout port 24 is inclined toward the rotating portion 23 rather than toward the exhaust port 2a with respect to a plane 24P perpendicular to the support shaft 22 indicated by the dashed line in FIG. blown out in the direction The injection angle of the first outlet 24 is not limited to the downward oblique angle of 45°, and may be any direction inclined downward from the horizontal direction, that is, the 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 the combustion air A is jetted outward in the radial direction of the support shaft 22 from both ends. At this time, as shown in FIG. 2, the combustion air A is jetted from the second outlet 25 so as to be inclined downward at an angle of 45 degrees. In other words, the combustion air A blown out from the second outlet 25 is inclined toward the rotating part 23 rather than toward the exhaust port 2a with respect to a plane 25P orthogonal to the support shaft 22 indicated by the dashed line in FIG. blown out in the direction The injection angle of the second outlet 25 is not limited to the downward oblique angle of 45°, and may be any direction inclined downward from the horizontal direction, that is, the direction away from the exhaust port 2a.

A burner 26 is provided on the bottom surface of the housing 2 and near 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 period of time has elapsed from the start of operation depending on the type of material to be burned. This reduces the fuel used by the burners 26 and enables the operation of the combustion furnace 1 at low cost.

A lower side wall of the housing 2 is provided with a nozzle 27 for supplying wood tar F, which is a material to be burned, to the combustion chamber 20 . 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 an electromagnetic 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 combusted substance is a viscous liquid, it is supplied to the combustion chamber 20 by spraying with the nozzle 27. 2a may be supplied.

A temperature sensor 29 electrically connected to the control panel 7 is provided on the side wall of the housing 2 to indicate the combustion temperature in the combustion chamber 20 . Based on the temperature detected by the temperature sensor 29, the electromagnetic valve 28 may be controlled to adjust the amount of wood tar F supplied.

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

The ion section 4 is composed of an outer cylinder 41, an inner cylinder 42, and ceramic balls 43, as shown in FIG. In the ion section 4 , a large number of ceramic balls 43 are enclosed in the inner cylinder 42 and fixed to the outer cylinder 41 . The ion part 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. Ceramic ball 43 is an example of the ceramic material of the present invention. The ion section 4 is arranged on the intake side of the blower 3, but may be arranged on the exhaust side or both sides.

A component of the ceramic ball 43 is not particularly limited, and various oxides, nitrides, carbides, borides, and other compounds can be used. Ceramic components such as aluminum oxide, calcium oxide, magnesium oxide, zirconium oxide, titanium oxide, fused silica, non-fused silica, spinel, cordierite, forsterite, zircon and mullite, aluminum nitride, zirconium nitride, titanium nitride, boron nitride , aluminum carbide, calcium carbide, silicon carbide, zirconium carbide, titanium carbide, tungsten carbide, zirconium boride, titanium boride, tungsten boride, aluminum titanate and aluminum zirconate titanate. These may be contained singly or in combination of two or more. The case where two or more kinds are contained means, 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 Refractory ceramics obtained by sintering chamotte made from clay, and the like.

Here, "mainly composed" means that the above-mentioned predetermined ceramic component is singular in the case of one kind, and the total is 50% by mass in the case of two or more kinds, when the ceramic ball 43 is 100% by mass. It means that it contains more than That is, in the case of one type, the predetermined ceramic component is 100% by mass. This content is the content of the ceramic component when only one of the predetermined ceramic components is contained, and the total of these ceramic components when two or more of the predetermined ceramic components are contained. content.

The ceramic balls 43 may be subjected to various treatments to improve corrosion resistance. Various treatments include, for example, various treatments for improving corrosion resistance. That is, corrosion-resistant layers formed by coating (zirconia coating layers, calcia coating layers, etc.), impregnated corrosion-resistant layers (layers in which zirconia, calcia, etc. are fixed to the base material surface), and the like can be mentioned. The corrosion-resistant layer formed by impregnation is obtained by immersing the substrate in an aqueous solution of a water-soluble organometallic compound (calcium acetate, etc.) containing a metal element such as Ca (Zr, Mg, etc.) to impregnate the substrate with the aqueous solution. After that, a layer in which the metal oxide is fixed to the surface of the substrate by heating, or a layer in which the substrate is impregnated with alumina sol by similarly immersing in alumina sol, and then heated to fix the alumina to the surface of the substrate. layer, etc. The ceramic balls 43 may be either castable material or natural material. Moreover, in the case of a castable material, it may consist of only cement, or may contain ceramic fibers and/or ceramic fillers. The porosity of the ceramic balls 43 can be arbitrarily set according to the resistance at the suction port of the blower 3 .

The ceramic balls 43 may have a value of 500 [pieces/cc] or more, more preferably 1000 [pieces/cc] or more, as measured by an ion meter for one ceramic ball 43 . Since the ion section 4 is installed at the suction port of the blower 3, the air passes through the gaps between the ceramic balls 43, and the combustion air A contains many types of ions such as negative ions.

The first magnetic path 5 is installed in the flow path between the blower 3 and the housing 2, as shown in FIG. The first magnetic path 5 has a first base 51, a second base 52, and a magnet 53, as shown in FIG. 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 across 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 gausses, but any magnetic flux density can be set according to the capacity of the blower 3 and the scale of the combustion furnace 1 . A permanent magnet such as a neodymium magnet using a rare earth element or a samarium-cobalt magnet may be used for the magnet 53 . Although the width of the passage H is 6 mm and the width of the first base 51 is 70 mm in the present embodiment, the width is not limited to this. Combustion air A discharged from the blower 3 is throttled by the passage H of the first magnetic passage 5, so that its pressure and temperature rise.

As shown in FIG. 7, the magnets 53 are provided at corresponding positions across the passage H between the first base 51 and the second base 52, and the S poles and N poles are arranged in a predetermined order. The air flowing through the passage H is curved in a certain direction by utilizing the repulsive action of facing the passage H with SS or NN and the suction action of facing with the passage H sandwiched by SN. Due to the strong magnetic field of the magnet 53, the air is attracted to the magnet 53 as it behaves like a kind of ferrofluid. This is because oxygen contained in the air has an exceptionally large magnetic susceptibility (paramagnetism). Combustion air A moves in a zigzag shape such that it approaches the first base 51 in the passage H, then approaches the second base 52 , approaches the first base 51 again, and approaches 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.

A second magnetic path 6 is installed in an air path 8 between the first magnetic path 5 and the housing 2, as shown in FIG. The second magnetic path 6 includes an outer shell 61, a screw 62, and a magnet 63, as shown in FIG. The outer shell 61 has a predetermined thickness, and a plurality of magnets 63 are arranged inside. Combustion air A flows through the second magnetic path 6 along the groove 62 a 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 separated by 180° in the circumferential direction of the screw 62 and have a magnetic flux density of 80,000 gauss over the entire second magnetic path 6 . As with the magnet 53, the magnet 63 utilizes a repelling action by opposing the passage H between SS or NN and an attraction effect by opposing the passage H between the SS or NN to force the air flowing through the groove 62a. bend in a certain direction. Specifically, the combustion air A swirls in the grooves 62a. In the present embodiment, the arrangement of the poles of the magnet 63 is set in advance so that the air flowing through the grooves 62a can be efficiently stirred.

The control panel 7 is provided with a control unit (not shown) that controls the supply of 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 sent to the panel 71. Is displayed. The control panel 7 is provided with a lever 72 for starting and stopping the blower 3 and a pilot lamp 73 that lights up when the blower 3 is in operation.

Next, the operational 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 about the support shaft 22, and the combustion air A is jetted obliquely downward from the first outlet 24 and the second outlet 25. As shown in FIG. The burner 26 is automatically ignited after a predetermined time has elapsed since the blower 3 was activated (S2).

After a predetermined time has passed since the burner 26 was ignited, the pressure pump for supplying the wood tar F is activated, the solenoid valve 28 is opened, and fuel is supplied to the housing 2 (S3). Since the wood tar F is sprayed from the nozzle 27, it is ignited by the flame of the burner 26 and burned. At this time, the wood tar F thrown into the housing 2 rises upward by the counterclockwise rotating rising airflow U generated by the rotating part 23 while burning, and is obliquely discharged from the first outlet 24 and the second outlet 25 . Since it is pushed downward by the combustion air A that is ejected downward, the combustion air A stays in the housing 2 for a long time, and turbulence is generated partially inside the housing 2, which is detected by the temperature sensor 29. temperature reaches 1500°C or more and reaches 1800°C at maximum.

The control panel 7 has a timer, and after a certain period of time has passed 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 period of time has not passed since the solenoid valve 28 was opened (S4: NO), it is determined whether or not the lever 72 has been operated to stop the blower 3. When the blower 3 is stopped by the lever 72 (S5: YES), the pumping pump is stopped to stop the supply of wood tar F (S6). After a predetermined time has elapsed since the pressure pump was stopped, 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 , thereby generating a rotating ascending airflow U around the support shaft 22 in the housing 2 . The rotating ascending airflow U can improve the combustion efficiency of the combustion chamber 20 and completely burn the wood tar F at a high temperature, thereby suppressing the generation of harmful substances and combustion residue. In addition, since the wood tar F itself burns at a high temperature, there is no need to supply additional fuel to maintain the temperature, and running costs can be reduced. Furthermore, 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 magnets 53 and 63 bend the flow of the air during passage. 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. generation and combustion residue can be suppressed.

According to such a configuration, since the first blowout port 24 blows out the combustion air A in a direction inclined toward the rotating part 23 on the plane 24P perpendicular to the support shaft 22, the rotating updraft U generated by the rotating part 23 is The combustion air A is kept in the combustion chamber 20 for a long time by suppressing the outflow to the exhaust port 2a. 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, thereby suppressing the generation of harmful substances and combustion residue.

According to such a configuration, since the second blowout port 25 blows out the combustion air A in a direction inclined toward the rotating part 23 on the plane 25P orthogonal to the support shaft 22, the first blowout port 24 and the second blowout port 25 As a result, the rotational ascending airflow U generated by the rotating portion 23 is suppressed from flowing out to the exhaust port 2a, and the combustion air A is kept 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, thereby suppressing the generation of harmful substances and combustion residue.

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, so that the magnet 53 causes the combustion air A to pass through the first magnetic passage when passing through the passage H. 5 The flow of air when 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. generation 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. In addition, 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. generation and combustion residue can be suppressed.

According to such a configuration, since the ion section 4 containing the ceramic balls 43 is provided on the intake side of the blower 3, the combustion air A containing various ions is supplied to the combustion chamber 20. 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, thereby suppressing the generation of harmful substances and combustion residue.

The combustion furnace according to the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the invention described in the claims.

INDUSTRIAL APPLICABILITY The combustion furnace of the present invention can be used as a combustion furnace for completely burning materials to be burned and suppressing emission of harmful substances.

1 Combustion Furnace 2 Housing 3 Air Blower 4 Ion Section 5 First Magnetic Passage 6 Second Magnetic Passage 7 Control Panel 8 Air Passage 20 Combustion Chamber 21 Blow Out Part 22 Support Shaft 23 Rotating Part 24 First Outlet 25 Second 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

In order to solve the above problems, the first aspect of the present invention is a housing having a combustion chamber inside, a blower for sending combustion air to the combustion chamber through an air passage, and a magnet disposed in the air passage. and a blow-out portion installed in the combustion chamber for supplying the combustion air, the blow-out portion being rotatably provided on the support shaft and the combustion chamber. a rotating part that blows out air, the combustion air passes through the magnetic passage in which the magnet is installed, is supplied from the rotating part to the combustion chamber, and the thrust of the combustion air blows out, The rotating portion rotates with respect to the support shaft, and the combustion chamber is provided with an exhaust port for discharging air after combustion. further includes a first pressing portion that blows out, wherein the first pressing portion is installed at a position closer to the exhaust port than the rotating portion on the support shaft, and is on the rotating portion side in a plane orthogonal to the support shaft The combustion furnace is characterized in that the combustion air is blown in an inclined direction .

In a second aspect of the invention , in the combustion furnace of the first aspect , the blow-out portion further includes a second pressing portion for blowing the combustion air radially outward of the support shaft, and the second pressing portion The unit is installed at a position closer to the exhaust port than the first pressing unit on the support shaft, and blows out the combustion air in a direction inclined toward the rotating unit on a plane orthogonal to the support shaft. and

A third invention is the combustion furnace according to the first invention or the second invention , wherein the magnetic path includes a first base that holds the magnet, and a first base that is separated from the first base by a predetermined distance to hold the magnet. and a second base are installed in the air passage, and the combustion air passes through the passage between the first base and the second base.

A fourth invention is the combustion furnace according to the first invention or the second invention , wherein the magnetic passage has a double-tube structure and has an outer tube and an inner tube, and the inner tube has is provided with a spiral wall, the outer tube is provided with the magnet, and the combustion air passes through a groove between the inner tube and the outer tube.

A fifth aspect of the present invention is a housing having a combustion chamber inside, a blower for sending combustion air to the combustion chamber through an air passage, a magnetic passage provided in the air passage and having a magnet, and the combustion chamber. a blowout portion installed in the air outlet for supplying the combustion air; the blowout portion includes a support shaft; Combustion air passes through the magnetic passage in which the magnet is installed, is supplied from the rotating part to the combustion chamber, and the rotating part rotates with respect to the support shaft by the thrust of the combustion air. An ion section 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 section and is supplied to the combustion chamber by the blower . We provide a combustion furnace that

Claims (6)

a housing having a combustion chamber inside;
a blower for sending combustion air to the combustion chamber through an air passage;
a magnetic passage disposed in the air passage and comprising a magnet;
a blowout portion installed in the combustion chamber for supplying the combustion air;
The blowout part has a support shaft and a rotating part rotatably provided on the support shaft from which the combustion air is blown out,
The combustion air passes through the air passage in which the magnet is installed and is supplied from the rotating part to the combustion chamber,
A combustion furnace, wherein the rotating portion is rotated with respect to the support shaft by the thrust of the combustion air. The combustion chamber is provided with an exhaust port through which air after combustion is discharged,
The blowout portion further includes a first holding portion for blowing the combustion air radially outward of the support shaft,
The first pressing portion is installed on the support shaft at a position closer to the exhaust port than the rotating portion, and blows out the combustion air in a direction inclined toward the rotating portion on a plane perpendicular to the support shaft. 2. The combustion furnace of claim 1, characterized by: The blowout portion further includes a second holding portion for blowing out the combustion air radially outward of the support shaft,
The second pressing portion is installed on the support shaft at a position closer to the exhaust port than the first pressing portion, and directs the combustion air in a direction inclined toward the rotating portion on a plane orthogonal to the support shaft. 3. A combustion furnace according to claim 2, characterized in that it blows out. The magnetic passage includes a first base that holds the magnet and a second base that is spaced apart from the first base by a predetermined distance and holds the magnet. 4. A combustion furnace according to any one of claims 1 to 3, passing through a passage between a base and said second base. the magnetic path has a double-tube structure and has an outer tube and an inner tube;
The inner tube is provided with a spiral wall, the outer tube is provided with the magnet, and the combustion air passes through a groove between the inner tube and the outer tube. 4. The combustion furnace according to any one of Items 1 to 3. An ion section containing a ceramic material is provided on either the intake side or the exhaust side of the blower,
6. The combustion furnace according to any one of claims 1 to 5, wherein the combustion air passes through the ion section and is supplied to the combustion chamber by the blower.

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