WO2019123783A1 - Burner - Google Patents

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Publication number
WO2019123783A1
WO2019123783A1 PCT/JP2018/037536 JP2018037536W WO2019123783A1 WO 2019123783 A1 WO2019123783 A1 WO 2019123783A1 JP 2018037536 W JP2018037536 W JP 2018037536W WO 2019123783 A1 WO2019123783 A1 WO 2019123783A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
nozzle
opening
combustion
furnace
Prior art date
Application number
PCT/JP2018/037536
Other languages
French (fr)
Japanese (ja)
Inventor
健一 友澤
伊藤　貴之
Original Assignee
中外炉工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中外炉工業株式会社 filed Critical 中外炉工業株式会社
Priority to KR1020207012550A priority Critical patent/KR102376677B1/en
Priority to CN201880081569.1A priority patent/CN111492178B/en
Publication of WO2019123783A1 publication Critical patent/WO2019123783A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles

Definitions

  • the present invention relates to a burner provided in a furnace.
  • the flame is formed into a specific shape, for example, a flat shape based on the shape of the furnace and the processing requirement of the processing material. It is practiced that such burners are used.
  • flames of different shapes may be required.
  • this invention aims at providing the burner which can obtain the flame of various shapes.
  • a first aspect of the present invention is a burner, comprising: a fuel nozzle for injecting a fuel; And a support gas nozzle provided as a pair on the outer peripheral side of the fuel nozzle for injecting a support gas;
  • the combustion supporting opening of the fuel gas nozzle into the furnace is provided at a position facing the fuel opening of the fuel nozzle into the furnace,
  • the tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle, The inclined flow path is characterized in that it is inclined to approach the fuel opening toward the support opening.
  • the shape of the flame is flattened by crushing the flame with the support gas from the support gas nozzle. It can be done.
  • a second aspect of the present invention is a burner, comprising: a fuel nozzle for injecting a fuel; And a support gas nozzle provided as a pair on the outer peripheral side of the fuel nozzle for injecting a support gas;
  • the combustion supporting opening of the fuel gas nozzle into the furnace is provided at a position facing the fuel opening of the fuel nozzle into the furnace,
  • the tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle, The inclined flow path may be inclined to be away from the fuel opening toward the combustion supporting opening.
  • the inclined flow path is inclined toward the support opening away from the fuel opening. Therefore, the flame is flattened by spreading the flame by the support gas from the support gas nozzle. It can be done.
  • a third aspect of the present invention is a burner, comprising: a fuel nozzle for injecting a fuel; And a fuel gas nozzle provided in two pairs on the outer peripheral side of the fuel nozzle and injecting the fuel gas.
  • the combustion supporting openings of the two pairs of the combustion gas nozzles into the furnace are provided at positions facing the fuel openings of the fuel nozzle into the furnace, respectively.
  • the tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle,
  • the inclined flow channels of the pair of combustion gas nozzles on one side are inclined toward the fuel opening toward the combustion opening,
  • the inclined flow channels of the other pair of combustion supporting gas nozzles are inclined to be away from the fuel opening toward the combustion opening thereof;
  • the first straight line passing through the centers of the pair of fuel gas nozzles on one side and the second straight line passing through the centers of the pair of fuel gas nozzles on the other side intersect with each other.
  • the inclined flow paths of the pair of combustion supporting gas nozzles on one side are inclined so as to approach the fuel opening toward the combustion supporting opening, and the inclined flow of the pair of combustion supporting gas nozzles on the other side
  • the passage is inclined toward the support opening thereof away from the fuel opening, and a first straight line passing through the centers of the pair of support gas nozzles on one side and the centers of the pair of support gas nozzles on the other side
  • the passing second straight line intersects with the second straight line.
  • a fourth aspect of the present invention is a burner, comprising: a fuel nozzle for injecting a fuel; A plurality of support gas nozzles provided circumferentially in the circumferential direction on the outer peripheral side of the fuel nozzle, for injecting a support gas; The tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle, Each of the inclined flow channels of the fuel gas nozzle is characterized by being inclined in the same circumferential direction toward the combustion opening.
  • the inclined flow channels of the fuel gas nozzle are respectively inclined in the same circumferential direction toward the fuel combustion opening portion, the swirling flow by the fuel gas from the fuel gas nozzle can be obtained.
  • the atmosphere in the furnace can be agitated, and the temperature distribution in the furnace can be made uniform.
  • a fifth aspect of the present invention is a burner, comprising: a fuel nozzle for injecting a fuel; A plurality of support gas nozzles provided circumferentially in the circumferential direction on the outer peripheral side of the fuel nozzle, for injecting a support gas; The tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle, Each of the inclined flow channels of the fuel gas nozzle is characterized by being inclined in the same direction toward the combustion opening.
  • the flame since the inclined flow paths of the combustion supporting gas nozzle are respectively inclined in the same direction toward the combustion supporting opening, the flame has directivity by the combustion supporting gas from the combustion supporting gas nozzle. It is possible to direct the flame to the object or to prevent the flame from striking the object directly.
  • the first to fifth aspects preferably further include the following configuration.
  • the inclined channel is provided rotatably with respect to a furnace body to which the burner is attached.
  • a guide groove for guiding the injection direction of the combustion supporting gas injected from the opening is formed at the opening of the tip portion into the furnace.
  • the injection direction of the combustion supporting gas can be changed by rotating the inclined flow path with respect to the furnace body.
  • the shape of the flame can be flexibly changed according to the shape of the furnace, the shape of the treatment material, and the characteristics.
  • the injection direction of the combustion supporting gas can be further stabilized by the guide groove.
  • FIG. 2 It is the cross-sectional schematic of the burner which concerns on embodiment of this invention. It is II arrow line view of FIG. It is a figure similar to FIG. 2 which shows the modification of arrangement
  • FIG. 1 is a schematic cross-sectional view of a burner 10 according to an embodiment of the present invention.
  • FIG. 2 is a view on arrow II of FIG.
  • the burner 10 is provided on the outer periphery of the fuel nozzle 2 for injecting the fuel and the fuel nozzle 2, and a support gas for mixing with the fuel injected from the fuel nozzle 2
  • a plurality of combustion supporting gas nozzles 3 and 4 for injecting oxygen gas are provided.
  • the combustion supporting gas nozzles 3 and 4 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in the present embodiment, they are provided symmetrically on the concentric circle of the fuel nozzle 2 when viewed from the furnace S. .
  • the combustion gas nozzle 3 is located above the fuel nozzle 2, and the combustion gas nozzle 4 is located below the fuel nozzle 2.
  • the fuel nozzle 2 has a fuel opening 2a that opens to the furnace interior S, and the combustion gas nozzles 3 and 4 each have a combustion opening 3a, 4a that opens to the furnace interior S .
  • the support openings 3a and 4a are provided at positions facing the fuel opening 2a.
  • a fuel pipe 25 is connected to the fuel nozzle 2 on the fuel supply upstream side of the fuel nozzle 2.
  • the fuel pipe 25 is provided with a supply valve 25 a for opening and closing the fuel pipe 25 and a control valve 25 b for adjusting the fuel supply amount.
  • the fuel injection amount of the fuel nozzle 2 can be changed by changing the opening degree of the adjustment valve 25b.
  • the combustion gas nozzles 3 and 4 have the same structure, and the combustion gas nozzle 3 will be described below as an example.
  • a gas pipe 35 is connected to the support gas nozzle 3 on the gas supply upstream side of the support gas nozzle 3.
  • the gas pipe 35 is provided with a supply valve 35 a for opening and closing the gas pipe 35 and a control valve 35 b for adjusting the gas supply amount.
  • the gas injection amount of the combustion supporting gas nozzle 3 can be changed by changing the opening degree of the adjustment valve 35b.
  • the combustion supporting gas nozzle 3 is provided with a tip portion 32 located in the furnace S with respect to the main body portion 31 and the main body portion 31 and attached to the main body portion 31.
  • the main body portion 31 is formed with a gas flow passage 31a through which the combustion support gas passes, and the tip end portion 32 is also formed with an inclined flow passage 32a through which the combustion support gas passes.
  • the gas flow passage 31 a extends in the axial direction of the main body 31.
  • the inclined flow path 32 a is inclined with respect to the axial center direction of the main body portion 31.
  • the inclined flow passage 32a is inclined so as to approach the fuel opening 2a toward the support opening 3a.
  • the inclined flow path of the combustion supporting gas nozzle 4 is also inclined so as to approach the fuel opening 2a toward the combustion supporting opening 4a.
  • the furnace inner end surface 32 b of the tip end portion 32 is located on the inward side of the fuel gas nozzle 3 from the furnace wall surface 91.
  • the furnace inner end face 32b is at a position where the gas injected from the combustion supporting opening 3a does not directly collide with the corner 92c of the furnace wall concave 92 pinched by the furnace wall 91 and the furnace inner end 32b. .
  • FIG. 3 is a view similar to FIG. 2 showing a modification of the arrangement of the combustion supporting gas nozzle.
  • the combustion supporting gas nozzles 5, 6 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in the present modification, they are symmetrical left and right when viewed from the furnace S on concentric circles of the fuel nozzle 2. It is provided to be The combustion gas nozzle 5 is located to the left of the fuel nozzle 2, and the combustion gas nozzle 6 is located to the right of the fuel nozzle 2.
  • the combustion supporting gas nozzles 5 and 6 respectively have combustion supporting openings 5 a and 6 a that open to the furnace interior S, respectively.
  • the support openings 5a, 6a are provided at positions facing the fuel opening 2a.
  • the supporting gas nozzles 5 and 6 have the same structure as the supporting gas nozzle 3, and only the inclination of the inclined flow path is different.
  • the inclined flow path of the combustion supporting gas nozzle 5 is inclined to be away from the fuel opening 2a toward the combustion supporting opening 5a.
  • the inclined flow path of the combustion supporting gas nozzle 6 is also inclined so as to be away from the fuel opening 2a toward the combustion supporting opening 6a.
  • FIG. 4 is a view similar to FIG. 2 showing a modification of the arrangement of the combustion supporting gas nozzle.
  • the supporting gas nozzles 301 and 41 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in the present embodiment, they are vertically symmetrical on the concentric circle of the fuel nozzle 2 as viewed from the furnace S It is provided to be
  • the combustion gas nozzle 301 is located above the fuel nozzle 2, and the combustion gas nozzle 41 is located below the fuel nozzle 2.
  • the combustion supporting gas nozzles 301 and 41 have combustion supporting openings 301 a and 41 a that open to the furnace interior S, respectively.
  • the support openings 301a, 41a are provided at positions facing the fuel opening 2a.
  • the combustion supporting gas nozzles 51, 61 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in the present modification, they are provided symmetrically on the concentric circle of the fuel nozzle 2 as viewed from the furnace S. .
  • the combustion gas nozzle 51 is located to the left of the fuel nozzle 2, and the combustion gas nozzle 61 is located to the right of the fuel nozzle 2.
  • the combustion supporting gas nozzles 51 and 61 respectively have combustion supporting openings 51 a and 61 a that open to the furnace interior S.
  • the support openings 51a, 61a are provided at positions facing the fuel opening 2a.
  • the first straight line L1 and the second straight line L2 are orthogonal to each other.
  • the combustion supporting gas nozzles 301 and 41 have the same structure as the combustion supporting gas nozzle 3, and only the inclination of the inclined flow path is different.
  • the inclined flow path of the combustion supporting gas nozzle 301 is inclined so as to approach the fuel opening 2a toward the combustion supporting opening 301a.
  • the inclined flow path of the combustion supporting gas nozzle 41 is also inclined so as to approach the fuel opening 2a toward the combustion opening 41a.
  • the supporting gas nozzles 51 and 61 have the same structure as the supporting gas nozzle 3 and differ only in the inclination of the inclined flow path.
  • the inclined flow path of the combustion supporting gas nozzle 51 is inclined to be away from the fuel opening 2 a toward the combustion supporting opening 51 a. Further, the inclined flow path of the combustion supporting gas nozzle 61 is also inclined so as to be away from the fuel opening 2a toward the combustion supporting opening 61a.
  • FIG. 5 is a view similar to FIG. 2 showing a modification of the arrangement of the combustion supporting gas nozzle.
  • the combustion supporting gas nozzles 302 and 42 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in the present embodiment, they are vertically symmetrical on the concentric circle of the fuel nozzle 2 as viewed from the furnace S. It is provided to be
  • the combustion gas nozzle 302 is located above the fuel nozzle 2, and the combustion gas nozzle 42 is located below the fuel nozzle 2.
  • the combustion supporting gas nozzles 302 and 42 have combustion supporting openings 302 a and 42 a that open to the furnace interior S, respectively.
  • the support openings 302a, 42a are provided at positions facing the fuel opening 2a.
  • the combustion supporting gas nozzles 52, 62 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in this modification, they are provided on the concentric circle of the fuel nozzle 2 so as to be symmetrical left and right as viewed from the furnace S. .
  • the combustion gas nozzle 52 is located to the left of the fuel nozzle 2, and the combustion gas nozzle 62 is located to the right of the fuel nozzle 2.
  • the combustion gas nozzles 52 and 62 have combustion openings 52 a and 62 a that open to the furnace interior S, respectively.
  • the support openings 52a, 62a are provided at positions facing the fuel opening 2a.
  • the first straight line L3 and the second straight line L4 are orthogonal to each other.
  • the combustion supporting gas nozzles 302, 42 have the same structure as the combustion supporting gas nozzle 3, and only the inclination of the inclined flow path is different.
  • the inclined flow path of the combustion supporting gas nozzle 302 is inclined to the left as viewed from the inside of the furnace S toward the combustion supporting opening 302a. Then, the inclined flow path of the combustion supporting gas nozzle 42 is inclined rightward as viewed from the furnace toward the combustion supporting opening 42 a.
  • the combustion supporting gas nozzles 52, 62 have the same structure as the combustion supporting gas nozzle 3, and only the inclination of the inclined flow path is different.
  • the inclined flow path of the combustion supporting gas nozzle 52 is inclined downward as viewed from the inside of the furnace S toward the combustion supporting opening 52a.
  • the inclined flow path of the fuel gas nozzle 62 is inclined upward as viewed from the inside of the furnace S toward the combustion opening 62a.
  • the inclined flow channels of the combustion gas nozzles 302, 42, 52, 62 have the same circumferential direction (the fuel opening as viewed from the furnace S) toward the combustion openings 302a, 42a, 52a, 62a, respectively. It is inclined counterclockwise) around 2a.
  • FIG. 6 is a view similar to FIG. 2 showing a modification of the arrangement of the combustion supporting gas nozzle.
  • the combustion supporting gas nozzles 303 and 43 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in the present embodiment, they are vertically symmetrical on the concentric circle of the fuel nozzle 2 as viewed from the furnace S. It is provided to be The combustion gas nozzle 303 is located above the fuel nozzle 2, and the combustion gas nozzle 43 is located below the fuel nozzle 2.
  • the combustion supporting gas nozzles 303 and 43 have combustion supporting openings 303 a and 43 a that open to the furnace interior S, respectively.
  • the support openings 303a, 43a are provided at positions facing the fuel opening 2a.
  • the combustion supporting gas nozzles 53, 63 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in the present modification, they are provided on the concentric circle of the fuel nozzle 2 so as to be symmetrical laterally as viewed from the furnace S. .
  • the combustion gas nozzle 53 is located to the left of the fuel nozzle 2, and the combustion gas nozzle 63 is located to the right of the fuel nozzle 2.
  • the combustion supporting gas nozzles 53, 63 respectively have combustion supporting openings 53a, 63a opened to the furnace interior S.
  • the support openings 53a, 63a are provided at positions facing the fuel opening 2a.
  • the first straight line L5 and the second straight line L6 are orthogonal to each other.
  • the supporting gas nozzles 303 and 43 have the same structure as the supporting gas nozzle 3 and differ only in the inclination of the inclined flow path.
  • the inclined flow path of the combustion supporting gas nozzle 303 is inclined leftward as viewed from the inside of the furnace S toward the combustion supporting opening 303a. Then, the inclined flow path of the combustion supporting gas nozzle 43 is inclined leftward as viewed from the furnace toward the combustion supporting opening 43a.
  • the supporting gas nozzles 53, 63 have the same structure as the supporting gas nozzle 3, and only the inclination of the inclined flow path is different.
  • the inclined flow path of the combustion supporting gas nozzle 53 is inclined leftward as viewed from the inside of the furnace S toward the combustion supporting opening 53a.
  • the inclined flow path of the combustion supporting gas nozzle 63 is inclined leftward as viewed from the inside of the furnace S toward the combustion supporting opening 63a.
  • the inclined flow channels of the fuel gas nozzles 303, 43, 53, 63 are inclined in the same direction (leftward as viewed from the furnace S) toward the combustion openings 303a, 43a, 53a, 63a, respectively. doing.
  • FIG. 7 is an enlarged schematic view of the combustion supporting gas nozzle 3 of FIG.
  • the main body 31 of the combustion support gas nozzle 3 is formed with a flange 37 projecting radially outward.
  • the furnace body 1 is provided with a projecting portion 11 projecting to the outside of the furnace T side, and a screw portion 11 a is formed on the outer peripheral surface of the projecting portion 11.
  • the support gas nozzle 3 is provided with a fixing member 38 for fixing the flange 37 and the protrusion 11.
  • the fixing member 38 is screwed with the screw portion 11a.
  • the fixing member 38 fixes the main body portion 31 to the furnace body 1, and rotates the support gas nozzle 3 about the axial center of the main body portion 31 with respect to the furnace body 1 by removing or loosening the fixing member 38.
  • the main body portion 31 and the distal end portion 32 are integrally rotatable about the axial center of the main body portion 31. By rotating, the inclination direction of the inclined flow path 32a formed in the distal end portion 32 is changed It is supposed to be
  • the inclined flow passage 32 a is inclined with respect to the axial center of the main body 31, so the support opening 3 a is formed at a position deviated with respect to the center of the furnace inner end surface 32 b of the tip 32.
  • the combustion supporting opening 3 a rotates with respect to the center of the furnace inner end surface 32 b of the distal end portion 32.
  • the inclination flow path 32a inclines with respect to the axial center of the main-body part 31, when the fuel gas nozzle 3 is rotated with respect to the furnace 1, the injection direction of the fuel gas nozzle 3 changes. Therefore, by changing the fixing state of the main body 31 to the furnace body 1 by the fixing member 38, it is possible to work from the outside of the furnace T to change the injection direction of the combustion supporting gas nozzle 3.
  • FIG. 8 is a schematic perspective view of the tip 32 of the fuel gas nozzle 3.
  • a guide groove 32c for guiding the injection direction of the supporting gas to be injected is formed around the support opening 3a of the inclined flow path 32a. It is done.
  • the guide groove 32c is a groove recessed inward of the tip end portion 32 at the furnace inner end surface 32b, and the outer edge of the furnace inner end surface 32b on the injection direction side is cut out in conformity with the shape of the groove.
  • the combustion supporting openings 3 a and 4 a of the combustion supporting gas nozzles 3 and 4 are provided at positions facing the fuel opening 2 a of the fuel nozzle 2 up and down.
  • the inclined flow channels 4 and 5 are inclined so as to approach the fuel opening 2a toward the support openings 3a and 4a. Therefore, the shape of the flame F can be made flat by crushing the flame from the top and the bottom with the support gas from the support gas nozzles 3 and 4.
  • the combustion supporting openings 5 a and 6 a of the combustion supporting gas nozzles 5 and 6 are provided at positions facing the fuel opening 2 a of the fuel nozzle 2 on the left and right.
  • the inclined flow channels 6 and 6 are inclined away from the fuel opening 2a toward the support openings 5a and 6a. Therefore, the shape of the flame F can be made flat by spreading the flame from side to side by the supporting gas from the supporting gas nozzles 5 and 6.
  • the combustion support openings 301 a and 41 a of the combustion support gas nozzles 301 and 41 are provided at positions facing the fuel opening 2 a of the fuel nozzle 2 up and down.
  • the inclined flow channels 41 are inclined toward the fuel-retaining openings 301a and 41a so as to approach the fuel opening 2a.
  • the support openings 51a, 61a of the support gas nozzles 51, 61 are provided at positions facing the fuel opening 2a of the fuel nozzle 2 on the left and right, and the inclined flow paths of the support gas nozzles 51, 61 are supported It inclines away from the fuel opening 2a toward the fuel opening 51a, 61a.
  • first straight line L1 passing through the centers of the fuel gas nozzles 301 and 41 and the second straight line L2 passing through the centers of the fuel gas nozzles 51 and 61 are orthogonal to each other. Therefore, the flame is squeezed from above and below by the supporting gas from the supporting gas nozzles 301 and 41, and the flame is spread to the left and right by the supporting gas from the supporting gas nozzles 51 and 61, thereby further flattening the shape of the flame F in the vertical direction. It can be done.
  • the combustion supporting openings 302 a and 42 a of the combustion supporting gas nozzles 302 and 42 are provided at positions facing the fuel opening 2 a of the fuel nozzle 2 up and down. , 42 are inclined leftward and rightward, respectively, as viewed from the furnace interior S toward the combustion supporting openings 302a, 42a. Further, the combustion supporting openings 52a and 62a of the combustion supporting gas nozzles 52 and 62 are provided at positions facing the fuel opening 2a of the fuel nozzle 2 on the left and right, and the inclined flow paths of the combustion supporting gas nozzles 52 and 62 As viewed from inside the furnace S toward the fuel openings 52a and 62a, they are respectively inclined downward and upward.
  • the inclined flow channels of the fuel gas nozzles 302, 42, 52, 62 have the same circumferential direction (the fuel opening as viewed from the furnace S) toward the combustion openings 302a, 42a, 52a, 62a, respectively. It is inclined counterclockwise) around 2a. Furthermore, the third straight line L3 passing through the centers of the combustion gas nozzles 302 and 42 and the fourth straight line L4 passing through the centers of the combustion gas nozzles 52 and 62 are orthogonal to each other. Therefore, the flame F becomes a swirling flow counterclockwise around the fuel opening 2a viewed from the furnace S by the combustion gas from the combustion gas nozzles 302, 42, 52, 62, and the atmosphere in the furnace can be agitated.
  • the temperature distribution in the furnace can be made uniform.
  • the direction of the swirl may be clockwise, and the number of fuel gas nozzles is not limited to four, and may be plural.
  • the combustion support openings 303 a and 43 a of the combustion support gas nozzles 303 and 43 are provided at positions facing vertically to the fuel opening 2 a of the fuel nozzle 2.
  • the inclined flow channels 43 are inclined to the left as viewed from the furnace interior S toward the combustion supporting openings 303a and 43a.
  • the combustion support openings 53a, 63a of the combustion gas nozzles 53, 63 are provided at positions facing the fuel opening 2a of the fuel nozzle 2 on the left and right, and the inclined flow paths of the combustion gas nozzles 53, 63 As viewed from the inside of the furnace S toward the fuel openings 53a and 63a, they are respectively inclined to the left.
  • the inclined flow channels of the fuel gas nozzles 303, 43, 53, 63 are inclined in the same direction (leftward as viewed from the furnace S) toward the combustion openings 303a, 43a, 53a, 63a, respectively. doing. Furthermore, the fifth straight line L5 passing through the centers of the combustion gas nozzles 303 and 43 and the sixth straight line L6 passing through the centers of the combustion gas nozzles 53 and 63 are orthogonal to each other. Therefore, it is possible to give directivity to the flame F by the supporting gas from the supporting gas nozzles 303, 43, 53, 63, to direct the flame F to the object or to directly hit the flame F to the object. It can be avoided.
  • the inclined flow channels of the fuel gas nozzles 303, 43, 53, 63 are inclined to the left toward the combustion opening, but the right, upper, lower, or any other direction It may be inclined in the direction of
  • the number of fuel gas nozzles is not limited to four, and it is sufficient if there are a plurality.
  • the support opening of the support gas nozzle is disposed vertically and horizontally relative to the fuel opening 2 a of the fuel nozzle 2, but the arrangement relative to the fuel opening 2 a is
  • the present invention is not limited to the left and right, and may be arranged in any direction with respect to the fuel opening 2a.
  • the fixing member 38 fixes the main body portion 31 to the furnace body 1, and the supporting gas nozzle 3 can be rotated relative to the furnace body 1 by removing or loosening the fixing member 38. That is, the inclined channel 32 a is provided rotatably with respect to the furnace body 1. Therefore, by rotating the inclined flow path 32 a with respect to the furnace body 1, it is possible to change the injection direction of the support gas. As a result, the shape of the flame can be flexibly changed according to the shape of the furnace, the shape of the treatment material, and the characteristics. In addition, since the fixing member 38 is located outside the furnace T, it is possible to easily change the injection direction of the combustion support gas from the outside of the furnace T.
  • a guide groove 32c for guiding the injection direction of the injected supporting gas is formed around the support opening 3a of the inclined flow path 32a. Therefore, the directivity of the fuel gas injection direction can be improved by the guide groove 32c. As a result, for example, when the combustion supporting gas nozzle 3 injects the combustion supporting gas so as to flatten the flame or swirl the flame, the flatness or the swirling property of the flame can be improved by the guide groove 32c.
  • the fuel injection amount of the fuel nozzle 2 can be changed by changing the opening degree of the adjusting valve 25b, and the gas injection amount of the support gas nozzle 3 changes the opening degree of the adjusting valve 35b. It is possible to change by. Therefore, by adjusting the fuel injection amount and the gas injection amount, the flame size and flatness can be easily changed.
  • the furnace inner end surface 32 b of the tip end portion 32 is located on the inward side of the fuel gas nozzle 3 from the furnace wall surface 91. Therefore, the influence of the gas injected from the combustion support opening 3a from the furnace environment can be reduced, and the directivity of the injection direction of the gas injected from the combustion support opening 3a can be improved.
  • the in-furnace end face 32b is recessed from the furnace wall surface 91, so that a portion to be shaded with respect to the in-furnace end face 32b can be formed, thereby protecting the in-furnace end face 32b from radiant heat in the furnace and improving durability It can be done.
  • the furnace inner end surface 32 b of the tip end portion 32 is a position at which the gas injected from the combustion support opening 3 a does not collide with the corner portion 92 c of the furnace wall concave surface 92. Therefore, while changing the injection direction of the gas injected from the support opening 3a, the injected gas collides with the corner 92c of the furnace wall concave 92 to disturb the gas flow, or the injection direction into the furnace Can be suppressed.
  • the support gas nozzle 3 includes the fixing member 38 for fixing the main body 31 to the furnace body 1, the inclined flow path 32a is more reliably fixed to the furnace body 1 in a predetermined injection direction. be able to.
  • FIG. 9 is a schematic perspective view of a combustion supporting gas nozzle whose tip 32 is rotatable relative to the main body 31.
  • a screw portion 31b is formed on the outer peripheral surface of the in-furnace S side end portion of the main body portion 31, and the tip end portion 32 is screwed into the screw portion 31b and attached to the main body portion 31. It is supposed to be Therefore, the distal end portion 32 is rotatably attached to the main body portion 31.
  • the injection direction of the support gas nozzle 3 is set in the same manner as in the case where the support gas nozzle 3 rotates with respect to the furnace body 1. It can be changed.
  • FIG. 10 is a schematic perspective view of the tip 32 of FIG.
  • the furnace inner end face 32b of the tip end portion 32 is formed with a slit groove 32d that can be engaged with a rotating jig that rotates the tip end portion 32 with respect to the main body portion 31.
  • the slit grooves 32d extend from the outer peripheral edge of the furnace inner end face 32b toward the center, and are formed, for example, two so as to be symmetrical with respect to the center.
  • the slit grooves 32d do not interfere with the support opening 3a.
  • the tip end portion 32 By forming the slit groove 32 d in the tip end portion 32, the tip end portion 32 can be easily rotated with respect to the main body portion 31. As a result, the injection direction of the combustion supporting gas nozzle 3 can be easily changed.
  • the fuel injection amount is changed by changing the opening degree of the adjustment valve 25b.
  • the fuel injection amount may be changed by changing the fuel supply pressure.
  • the adjustment valve 25b may not be provided, and the supply valve 25a may have the function of the adjustment valve 25b.

Abstract

A burner (10) is provided with: a fuel nozzle (2) for injecting fuel; and a pair of combustion-assisting gas nozzles (3, 4) provided on the outer peripheral side of the fuel nozzle (2) and injecting a combustion-assisting gas. The burner (10) is characterized in that the combustion-assisting openings (3a, 4a) of the combustion-assisting gas nozzles (3, 4), which are open to a furnace, are provided at positions facing the fuel opening (2a) of the fuel nozzle (2), which is open to the furnace, the front ends (32) of the combustion-assisting gas nozzles (3, 4) have sloped flow passages (32a) sloped relative to the direction of the axes of the bodies (31) of the combustion-assisting gas nozzles (3, 4), and the sloped flow passages (32a) are sloped toward the combustion-assisting openings (3a, 4a) so as to approach the fuel opening (2a).

Description

バーナBurner
　本発明は、炉に設けられるバーナに関するものである。 The present invention relates to a burner provided in a furnace.
　従来、鋼片や丸棒等の処理材を熱処理する炉では、特許文献１に示されるように、炉の形状や処理材の処理要求に基づき、火炎を特定の形状、例えば扁平な形状とするようなバーナが用いられるということが行われている。 Conventionally, in a furnace for heat treating a processing material such as a steel piece or a round bar, as shown in Patent Document 1, the flame is formed into a specific shape, for example, a flat shape based on the shape of the furnace and the processing requirement of the processing material. It is practiced that such burners are used.
特開平１０－１８３２３５号公報Unexamined-Japanese-Patent No. 10-183235 gazette
　しかし、炉の形状や処理材の処理要求によっては、異なる形状の火炎が求められることがある。 However, depending on the shape of the furnace and the processing requirements of the treatment material, flames of different shapes may be required.
　そこで、本発明では、様々な形状の火炎を得ることが可能なバーナを提供することを目的とする。 So, in this invention, it aims at providing the burner which can obtain the flame of various shapes.
　本発明の第１態様は、バーナであって、燃料を噴射する燃料ノズルと、
　前記燃料ノズルの外周側に一対として設けられ、支燃ガスを噴射する支燃ガスノズルと、を備えており、
　前記支燃ガスノズルの炉内への支燃開口部は、前記燃料ノズルの炉内への燃料開口部に対して対向する位置に設けられ、
　前記支燃ガスノズルの先端部は、前記支燃ガスノズルの本体部の軸心方向に対して傾斜する傾斜流路を有し、
　前記傾斜流路は、前記支燃開口部に向かって前記燃料開口部に近づくよう傾斜していることを特徴とする。 A first aspect of the present invention is a burner, comprising: a fuel nozzle for injecting a fuel;
And a support gas nozzle provided as a pair on the outer peripheral side of the fuel nozzle for injecting a support gas;
The combustion supporting opening of the fuel gas nozzle into the furnace is provided at a position facing the fuel opening of the fuel nozzle into the furnace,
The tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle,
The inclined flow path is characterized in that it is inclined to approach the fuel opening toward the support opening.
　前記構成によれば、傾斜流路は、支燃開口部に向かって燃料開口部に近づくよう傾斜しているので、支燃ガスノズルからの支燃ガスによって火炎を押しつぶすことによって、火炎の形状を扁平とすることができる。 According to the above configuration, since the inclined flow path is inclined toward the fuel opening toward the support opening, the shape of the flame is flattened by crushing the flame with the support gas from the support gas nozzle. It can be done.
　本発明の第２態様は、バーナであって、燃料を噴射する燃料ノズルと、
　前記燃料ノズルの外周側に一対として設けられ、支燃ガスを噴射する支燃ガスノズルと、を備えており、
　前記支燃ガスノズルの炉内への支燃開口部は、前記燃料ノズルの炉内への燃料開口部に対して対向する位置に設けられ、
　前記支燃ガスノズルの先端部は、前記支燃ガスノズルの本体部の軸心方向に対して傾斜する傾斜流路を有し、
　前記傾斜流路は、前記支燃開口部に向かって前記燃料開口部から離れるよう傾斜していることを特徴とする。 A second aspect of the present invention is a burner, comprising: a fuel nozzle for injecting a fuel;
And a support gas nozzle provided as a pair on the outer peripheral side of the fuel nozzle for injecting a support gas;
The combustion supporting opening of the fuel gas nozzle into the furnace is provided at a position facing the fuel opening of the fuel nozzle into the furnace,
The tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle,
The inclined flow path may be inclined to be away from the fuel opening toward the combustion supporting opening.
　前記構成によれば、傾斜流路は、支燃開口部に向かって燃料開口部から離れるよう傾斜しているので、支燃ガスノズルからの支燃ガスによって火炎を広げることによって、火炎の形状を扁平とすることができる。 According to the above configuration, the inclined flow path is inclined toward the support opening away from the fuel opening. Therefore, the flame is flattened by spreading the flame by the support gas from the support gas nozzle. It can be done.
　本発明の第３態様は、バーナであって、燃料を噴射する燃料ノズルと、
　前記燃料ノズルの外周側に二対として設けられ、支燃ガスを噴射する支燃ガスノズルと、を備えており、
　二対の前記支燃ガスノズルの炉内への支燃開口部は、前記燃料ノズルの炉内への燃料開口部に対して、それぞれ対向する位置に設けられ、
　前記支燃ガスノズルの先端部は、前記支燃ガスノズルの本体部の軸心方向に対して傾斜する傾斜流路を有し、
　一方側の一対の支燃ガスノズルの傾斜流路は、その支燃開口部に向かって前記燃料開口部に近づくよう傾斜しており、
　他方側の一対の支燃ガスノズルの傾斜流路は、その支燃開口部に向かって前記燃料開口部から離れるよう傾斜しており、
　前記一方側の一対の支燃ガスノズルの中心を通る第１直線と、前記他方側の一対の支燃ガスノズルの中心を通る第２直線とは、交差するようになっていることを特徴とする。 A third aspect of the present invention is a burner, comprising: a fuel nozzle for injecting a fuel;
And a fuel gas nozzle provided in two pairs on the outer peripheral side of the fuel nozzle and injecting the fuel gas.
The combustion supporting openings of the two pairs of the combustion gas nozzles into the furnace are provided at positions facing the fuel openings of the fuel nozzle into the furnace, respectively.
The tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle,
The inclined flow channels of the pair of combustion gas nozzles on one side are inclined toward the fuel opening toward the combustion opening,
The inclined flow channels of the other pair of combustion supporting gas nozzles are inclined to be away from the fuel opening toward the combustion opening thereof;
The first straight line passing through the centers of the pair of fuel gas nozzles on one side and the second straight line passing through the centers of the pair of fuel gas nozzles on the other side intersect with each other.
　前記構成によれば、一方側の一対の支燃ガスノズルの傾斜流路は、その支燃開口部に向かって燃料開口部に近づくよう傾斜しており、他方側の一対の支燃ガスノズルの傾斜流路は、その支燃開口部に向かって燃料開口部から離れるよう傾斜しており、一方側の一対の支燃ガスノズルの中心を通る第１直線と、他方側の一対の支燃ガスノズルの中心を通る第２直線とは、交差するようになっている。その結果、一方側の支燃ガスノズルからの支燃ガスによって火炎を押しつぶし、他方側の支燃ガスからの支燃ガスによって火炎を広げることによって、火炎の形状を第１直線の方向により扁平とすることができる。 According to the above configuration, the inclined flow paths of the pair of combustion supporting gas nozzles on one side are inclined so as to approach the fuel opening toward the combustion supporting opening, and the inclined flow of the pair of combustion supporting gas nozzles on the other side The passage is inclined toward the support opening thereof away from the fuel opening, and a first straight line passing through the centers of the pair of support gas nozzles on one side and the centers of the pair of support gas nozzles on the other side The passing second straight line intersects with the second straight line. As a result, the flame is crushed by the supporting gas from the supporting gas nozzle on one side, and the flame is spread by the supporting gas from the supporting gas on the other side, thereby making the shape of the flame flatter in the direction of the first straight line. be able to.
　本発明の第４態様は、バーナであって、燃料を噴射する燃料ノズルと、
　前記燃料ノズルの外周側に円周方向に複数設けられ、支燃ガスを噴射する支燃ガスノズルと、を備えており、
　前記支燃ガスノズルの先端部は、前記支燃ガスノズルの本体部の軸心方向に対して傾斜する傾斜流路を有し、
　前記支燃ガスノズルの傾斜流路は、それぞれ、その支燃開口部に向かって同一の円周方向に傾斜していることを特徴とする。 A fourth aspect of the present invention is a burner, comprising: a fuel nozzle for injecting a fuel;
A plurality of support gas nozzles provided circumferentially in the circumferential direction on the outer peripheral side of the fuel nozzle, for injecting a support gas;
The tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle,
Each of the inclined flow channels of the fuel gas nozzle is characterized by being inclined in the same circumferential direction toward the combustion opening.
　前記構成によれば、支燃ガスノズルの傾斜流路は、それぞれ、その支燃開口部に向かって同一の円周方向に傾斜しているので、支燃ガスノズルからの支燃ガスによる旋回流によって、炉内雰囲気が撹拌でき、炉内の温度分布を均一にすることができる。 According to the above configuration, since the inclined flow channels of the fuel gas nozzle are respectively inclined in the same circumferential direction toward the fuel combustion opening portion, the swirling flow by the fuel gas from the fuel gas nozzle can be obtained. The atmosphere in the furnace can be agitated, and the temperature distribution in the furnace can be made uniform.
　本発明の第５態様は、バーナであって、燃料を噴射する燃料ノズルと、
　前記燃料ノズルの外周側に円周方向に複数設けられ、支燃ガスを噴射する支燃ガスノズルと、を備えており、
　前記支燃ガスノズルの先端部は、前記支燃ガスノズルの本体部の軸心方向に対して傾斜する傾斜流路を有し、
　前記支燃ガスノズルの傾斜流路は、それぞれ、その支燃開口部に向かって同一方向に傾斜していることを特徴とする。 A fifth aspect of the present invention is a burner, comprising: a fuel nozzle for injecting a fuel;
A plurality of support gas nozzles provided circumferentially in the circumferential direction on the outer peripheral side of the fuel nozzle, for injecting a support gas;
The tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle,
Each of the inclined flow channels of the fuel gas nozzle is characterized by being inclined in the same direction toward the combustion opening.
　前記構成によれば、支燃ガスノズルの傾斜流路は、それぞれ、その支燃開口部に向かって同一方向に傾斜しているので、支燃ガスノズルからの支燃ガスによって火炎に指向性をもたすことができ、対象物に火炎を向けたり、対象物に火炎が直接当たることを避けるようにすることができる。 According to the above configuration, since the inclined flow paths of the combustion supporting gas nozzle are respectively inclined in the same direction toward the combustion supporting opening, the flame has directivity by the combustion supporting gas from the combustion supporting gas nozzle. It is possible to direct the flame to the object or to prevent the flame from striking the object directly.
　第１態様～第５態様は、さらに、次のような構成を備えるのが好ましい。
（１）前記傾斜流路は、前記バーナが取り付けられる炉体に対して回転可能に設けられている。
（２）前記先端部の炉内への開口には、前記開口から噴射される支燃ガスの噴射方向を案内する案内溝が形成されている。 The first to fifth aspects preferably further include the following configuration.
(1) The inclined channel is provided rotatably with respect to a furnace body to which the burner is attached.
(2) A guide groove for guiding the injection direction of the combustion supporting gas injected from the opening is formed at the opening of the tip portion into the furnace.
　前記構成（１）によれば、傾斜流路を炉体に対して回転させることによって、支燃ガスの噴射方向を変更することができる。その結果、炉の形状や処理材の形状、特性に応じ、火炎の形状をフレキシブルに変更することができる。 According to the configuration (1), the injection direction of the combustion supporting gas can be changed by rotating the inclined flow path with respect to the furnace body. As a result, the shape of the flame can be flexibly changed according to the shape of the furnace, the shape of the treatment material, and the characteristics.
　前記構成（２）によれば、案内溝によって、支燃ガスの噴射方向をより安定させることができる。 According to the above configuration (2), the injection direction of the combustion supporting gas can be further stabilized by the guide groove.
　要するに、本発明によると、様々な形状の火炎を得ることが可能なバーナを提供することができる。 In short, according to the present invention, it is possible to provide a burner capable of obtaining flames of various shapes.
本発明の実施形態に係るバーナの断面概略図である。It is the cross-sectional schematic of the burner which concerns on embodiment of this invention. 図１のII矢視図である。It is II arrow line view of FIG. 支燃ガスノズルの配置の変形例を示す、図２と同様の図である。It is a figure similar to FIG. 2 which shows the modification of arrangement | positioning of a combustion supporting gas nozzle. 支燃ガスノズルの配置の変形例を示す、図２と同様の図である。It is a figure similar to FIG. 2 which shows the modification of arrangement | positioning of a combustion supporting gas nozzle. 支燃ガスノズルの配置の変形例を示す、図２と同様の図である。It is a figure similar to FIG. 2 which shows the modification of arrangement | positioning of a combustion supporting gas nozzle. 支燃ガスノズルの配置の変形例を示す、図２と同様の図である。It is a figure similar to FIG. 2 which shows the modification of arrangement | positioning of a combustion supporting gas nozzle. 図１の支燃ガスノズルの拡大概略図である。It is the expansion schematic of the combustion gas nozzle of FIG. 支燃ガスノズルの先端部の概略斜視図である。It is a schematic perspective view of the tip part of a supporting gas nozzle. 先端部が本体部に対して回転可能な支燃ガスノズルの概略斜視図である。It is a schematic perspective view of the supporting gas nozzle whose front-end | tip part can rotate with respect to a main-body part. 図９の先端部の概略斜視図である。It is a schematic perspective view of the front-end | tip part of FIG.
（全体構成）
　図１は、本発明の実施形態に係るバーナ１０の断面概略図である。図２は、図１のII矢視図である。図１及び図２に示されるように、バーナ１０は、燃料を噴射する燃料ノズル２と、燃料ノズル２の外周側に設けられ、燃料ノズル２から噴射される燃料と混合させるための支燃ガス、例えば酸素ガスを噴射する複数の支燃ガスノズル３、４と、を備えている。 (overall structure)
FIG. 1 is a schematic cross-sectional view of a burner 10 according to an embodiment of the present invention. FIG. 2 is a view on arrow II of FIG. As shown in FIG. 1 and FIG. 2, the burner 10 is provided on the outer periphery of the fuel nozzle 2 for injecting the fuel and the fuel nozzle 2, and a support gas for mixing with the fuel injected from the fuel nozzle 2 For example, a plurality of combustion supporting gas nozzles 3 and 4 for injecting oxygen gas are provided.
　支燃ガスノズル３、４は、燃料ノズル２の外周側に一対として設けられ、本実施形態では、燃料ノズル２の同心円上において、炉内Ｓから見て上下に対称となるように設けられている。支燃ガスノズル３は、燃料ノズル２の上方に位置し、支燃ガスノズル４は、燃料ノズル２の下方に位置する。燃料ノズル２は、炉内Ｓに対して開口する燃料開口部２ａを有し、支燃ガスノズル３、４は、それぞれ炉内Ｓに対して開口する支燃開口部３ａ、４ａを有している。支燃開口部３ａ、４ａは、燃料開口部２ａに対して対向するよう位置に設けられている。 The combustion supporting gas nozzles 3 and 4 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in the present embodiment, they are provided symmetrically on the concentric circle of the fuel nozzle 2 when viewed from the furnace S. . The combustion gas nozzle 3 is located above the fuel nozzle 2, and the combustion gas nozzle 4 is located below the fuel nozzle 2. The fuel nozzle 2 has a fuel opening 2a that opens to the furnace interior S, and the combustion gas nozzles 3 and 4 each have a combustion opening 3a, 4a that opens to the furnace interior S . The support openings 3a and 4a are provided at positions facing the fuel opening 2a.
　燃料ノズル２には、燃料ノズル２の燃料供給上流側において、燃料管２５が接続されている。燃料管２５には、燃料管２５を開閉する供給弁２５ａ及び燃料供給量を調整する調整弁２５ｂが設けられている。燃料ノズル２の燃料噴射量は、調整弁２５ｂの開度を変更することによって、変更可能となっている。 A fuel pipe 25 is connected to the fuel nozzle 2 on the fuel supply upstream side of the fuel nozzle 2. The fuel pipe 25 is provided with a supply valve 25 a for opening and closing the fuel pipe 25 and a control valve 25 b for adjusting the fuel supply amount. The fuel injection amount of the fuel nozzle 2 can be changed by changing the opening degree of the adjustment valve 25b.
　支燃ガスノズル３、４は、同様の構造を備えており、支燃ガスノズル３を例として以下説明する。 The combustion gas nozzles 3 and 4 have the same structure, and the combustion gas nozzle 3 will be described below as an example.
（支燃ガスノズル）
　支燃ガスノズル３には、支燃ガスノズル３のガス供給上流側において、ガス管３５が接続されている。ガス管３５には、ガス管３５を開閉する供給弁３５ａ及びガス供給量を調整する調整弁３５ｂが設けられている。支燃ガスノズル３のガス噴射量は、調整弁３５ｂの開度を変更することによって、変更可能となっている。 (Supporting gas nozzle)
A gas pipe 35 is connected to the support gas nozzle 3 on the gas supply upstream side of the support gas nozzle 3. The gas pipe 35 is provided with a supply valve 35 a for opening and closing the gas pipe 35 and a control valve 35 b for adjusting the gas supply amount. The gas injection amount of the combustion supporting gas nozzle 3 can be changed by changing the opening degree of the adjustment valve 35b.
　支燃ガスノズル３は、本体部３１と本体部３１に対して炉内Ｓに位置し、本体部３１に取り付けられる先端部３２と、を備えている。本体部３１には、支燃ガスが通過するガス流路３１ａが形成されており、先端部３２にも、支燃ガスが通過する傾斜流路３２ａが形成されている。ガス流路３１ａは、本体部３１の軸心方向に延びている。傾斜流路３２ａは、本体部３１の軸心方向に対して傾斜している。傾斜流路３２ａは、支燃開口部３ａに向かって燃料開口部２ａに近づくよう傾斜している。そして、支燃ガスノズル４の傾斜流路も、支燃開口部４ａに向かって燃料開口部２ａに近づくよう傾斜している。 The combustion supporting gas nozzle 3 is provided with a tip portion 32 located in the furnace S with respect to the main body portion 31 and the main body portion 31 and attached to the main body portion 31. The main body portion 31 is formed with a gas flow passage 31a through which the combustion support gas passes, and the tip end portion 32 is also formed with an inclined flow passage 32a through which the combustion support gas passes. The gas flow passage 31 a extends in the axial direction of the main body 31. The inclined flow path 32 a is inclined with respect to the axial center direction of the main body portion 31. The inclined flow passage 32a is inclined so as to approach the fuel opening 2a toward the support opening 3a. Then, the inclined flow path of the combustion supporting gas nozzle 4 is also inclined so as to approach the fuel opening 2a toward the combustion supporting opening 4a.
　また、先端部３２の炉内側端面３２ｂは、炉壁面９１から、支燃ガスノズル３の内方側に位置している。ここで、炉内側端面３２ｂは、支燃開口部３ａから噴射されるガスが、炉壁面９１と炉内側端面３２ｂとで挟まれる炉壁凹面９２の角部９２ｃに直接衝突しない位置となっている。 Further, the furnace inner end surface 32 b of the tip end portion 32 is located on the inward side of the fuel gas nozzle 3 from the furnace wall surface 91. Here, the furnace inner end face 32b is at a position where the gas injected from the combustion supporting opening 3a does not directly collide with the corner 92c of the furnace wall concave 92 pinched by the furnace wall 91 and the furnace inner end 32b. .
　図３は、支燃ガスノズルの配置の変形例を示す、図２と同様の図である。図３に示されるように、支燃ガスノズル５、６は、燃料ノズル２の外周側に一対として設けられ、本変形例では、燃料ノズル２の同心円上において、炉内Ｓから見て左右に対称となるように設けられている。支燃ガスノズル５は、燃料ノズル２の左方に位置し、支燃ガスノズル６は、燃料ノズル２の右方に位置する。支燃ガスノズル５、６は、それぞれ炉内Ｓに対して開口する支燃開口部５ａ、６ａを有している。支燃開口部５ａ、６ａは、燃料開口部２ａに対して対向する位置に設けられている。 FIG. 3 is a view similar to FIG. 2 showing a modification of the arrangement of the combustion supporting gas nozzle. As shown in FIG. 3, the combustion supporting gas nozzles 5, 6 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in the present modification, they are symmetrical left and right when viewed from the furnace S on concentric circles of the fuel nozzle 2. It is provided to be The combustion gas nozzle 5 is located to the left of the fuel nozzle 2, and the combustion gas nozzle 6 is located to the right of the fuel nozzle 2. The combustion supporting gas nozzles 5 and 6 respectively have combustion supporting openings 5 a and 6 a that open to the furnace interior S, respectively. The support openings 5a, 6a are provided at positions facing the fuel opening 2a.
　支燃ガスノズル５、６は、支燃ガスノズル３と同様の構造を備えており、傾斜流路の傾斜のみ異なっている。支燃ガスノズル５の傾斜流路は、支燃開口部５ａに向かって燃料開口部２ａから離れるよう傾斜している。そして、支燃ガスノズル６の傾斜流路も、支燃開口部６ａに向かって燃料開口部２ａから離れるよう傾斜している。 The supporting gas nozzles 5 and 6 have the same structure as the supporting gas nozzle 3, and only the inclination of the inclined flow path is different. The inclined flow path of the combustion supporting gas nozzle 5 is inclined to be away from the fuel opening 2a toward the combustion supporting opening 5a. Then, the inclined flow path of the combustion supporting gas nozzle 6 is also inclined so as to be away from the fuel opening 2a toward the combustion supporting opening 6a.
　図４は、支燃ガスノズルの配置の変形例を示す、図２と同様の図である。図４に示されるように、支燃ガスノズル３０１、４１は、燃料ノズル２の外周側に一対として設けられ、本実施形態では、燃料ノズル２の同心円上において、炉内Ｓから見て上下に対称となるように設けられている。支燃ガスノズル３０１は、燃料ノズル２の上方に位置し、支燃ガスノズル４１は、燃料ノズル２の下方に位置する。支燃ガスノズル３０１、４１は、それぞれ炉内Ｓに対して開口する支燃開口部３０１ａ、４１ａを有している。支燃開口部３０１ａ、４１ａは、燃料開口部２ａに対して対向する位置に設けられている。 FIG. 4 is a view similar to FIG. 2 showing a modification of the arrangement of the combustion supporting gas nozzle. As shown in FIG. 4, the supporting gas nozzles 301 and 41 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in the present embodiment, they are vertically symmetrical on the concentric circle of the fuel nozzle 2 as viewed from the furnace S It is provided to be The combustion gas nozzle 301 is located above the fuel nozzle 2, and the combustion gas nozzle 41 is located below the fuel nozzle 2. The combustion supporting gas nozzles 301 and 41 have combustion supporting openings 301 a and 41 a that open to the furnace interior S, respectively. The support openings 301a, 41a are provided at positions facing the fuel opening 2a.
　支燃ガスノズル５１、６１は、燃料ノズル２の外周側に一対として設けられ、本変形例では、燃料ノズル２の同心円上において、炉内Ｓから見て左右に対称となるように設けられている。支燃ガスノズル５１は、燃料ノズル２の左方に位置し、支燃ガスノズル６１は、燃料ノズル２の右方に位置する。支燃ガスノズル５１、６１は、それぞれ炉内Ｓに対して開口する支燃開口部５１ａ、６１ａを有している。支燃開口部５１ａ、６１ａは、燃料開口部２ａに対して対向する位置に設けられている。 The combustion supporting gas nozzles 51, 61 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in the present modification, they are provided symmetrically on the concentric circle of the fuel nozzle 2 as viewed from the furnace S. . The combustion gas nozzle 51 is located to the left of the fuel nozzle 2, and the combustion gas nozzle 61 is located to the right of the fuel nozzle 2. The combustion supporting gas nozzles 51 and 61 respectively have combustion supporting openings 51 a and 61 a that open to the furnace interior S. The support openings 51a, 61a are provided at positions facing the fuel opening 2a.
　そして、支燃ガスノズル３０１、４１の中心を通る第１直線Ｌ１と、支燃ガスノズル５１、６１の中心を通る第２直線Ｌ２とは、交差するようになっている。本実施形態では、第１直線Ｌ１と第２直線Ｌ２とは直交するようになっている。 The first straight line L1 passing through the centers of the combustion supporting gas nozzles 301 and 41 and the second straight line L2 passing through the centers of the combustion supporting gas nozzles 51 and 61 intersect with each other. In the present embodiment, the first straight line L1 and the second straight line L2 are orthogonal to each other.
　支燃ガスノズル３０１、４１は、支燃ガスノズル３と同様の構造を備えており、傾斜流路の傾斜のみ異なっている。支燃ガスノズル３０１の傾斜流路は、支燃開口部３０１ａに向かって燃料開口部２ａに近づくよう傾斜している。そして、支燃ガスノズル４１の傾斜流路も、支燃開口部４１ａに向かって燃料開口部２ａに近づくよう傾斜している。 The combustion supporting gas nozzles 301 and 41 have the same structure as the combustion supporting gas nozzle 3, and only the inclination of the inclined flow path is different. The inclined flow path of the combustion supporting gas nozzle 301 is inclined so as to approach the fuel opening 2a toward the combustion supporting opening 301a. Then, the inclined flow path of the combustion supporting gas nozzle 41 is also inclined so as to approach the fuel opening 2a toward the combustion opening 41a.
　支燃ガスノズル５１、６１は、支燃ガスノズル３と同様の構造を備えており、傾斜流路の傾斜のみ異なっている。支燃ガスノズル５１の傾斜流路は、支燃開口部５１ａに向かって燃料開口部２ａから離れるよう傾斜している。そして、支燃ガスノズル６１の傾斜流路も、支燃開口部６１ａに向かって燃料開口部２ａから離れるよう傾斜している。 The supporting gas nozzles 51 and 61 have the same structure as the supporting gas nozzle 3 and differ only in the inclination of the inclined flow path. The inclined flow path of the combustion supporting gas nozzle 51 is inclined to be away from the fuel opening 2 a toward the combustion supporting opening 51 a. Further, the inclined flow path of the combustion supporting gas nozzle 61 is also inclined so as to be away from the fuel opening 2a toward the combustion supporting opening 61a.
　図５は、支燃ガスノズルの配置の変形例を示す、図２と同様の図である。図５に示されるように、支燃ガスノズル３０２、４２は、燃料ノズル２の外周側に一対として設けられ、本実施形態では、燃料ノズル２の同心円上において、炉内Ｓから見て上下に対称となるように設けられている。支燃ガスノズル３０２は、燃料ノズル２の上方に位置し、支燃ガスノズル４２は、燃料ノズル２の下方に位置する。支燃ガスノズル３０２、４２は、それぞれ炉内Ｓに対して開口する支燃開口部３０２ａ、４２ａを有している。支燃開口部３０２ａ、４２ａは、燃料開口部２ａに対して対向する位置に設けられている。 FIG. 5 is a view similar to FIG. 2 showing a modification of the arrangement of the combustion supporting gas nozzle. As shown in FIG. 5, the combustion supporting gas nozzles 302 and 42 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in the present embodiment, they are vertically symmetrical on the concentric circle of the fuel nozzle 2 as viewed from the furnace S. It is provided to be The combustion gas nozzle 302 is located above the fuel nozzle 2, and the combustion gas nozzle 42 is located below the fuel nozzle 2. The combustion supporting gas nozzles 302 and 42 have combustion supporting openings 302 a and 42 a that open to the furnace interior S, respectively. The support openings 302a, 42a are provided at positions facing the fuel opening 2a.
　支燃ガスノズル５２、６２は、燃料ノズル２の外周側に一対として設けられ、本変形例では、燃料ノズル２の同心円上において、炉内Ｓから見て左右に対称となるように設けられている。支燃ガスノズル５２は、燃料ノズル２の左方に位置し、支燃ガスノズル６２は、燃料ノズル２の右方に位置する。支燃ガスノズル５２、６２は、それぞれ炉内Ｓに対して開口する支燃開口部５２ａ、６２ａを有している。支燃開口部５２ａ、６２ａは、燃料開口部２ａに対して対向する位置に設けられている。 The combustion supporting gas nozzles 52, 62 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in this modification, they are provided on the concentric circle of the fuel nozzle 2 so as to be symmetrical left and right as viewed from the furnace S. . The combustion gas nozzle 52 is located to the left of the fuel nozzle 2, and the combustion gas nozzle 62 is located to the right of the fuel nozzle 2. The combustion gas nozzles 52 and 62 have combustion openings 52 a and 62 a that open to the furnace interior S, respectively. The support openings 52a, 62a are provided at positions facing the fuel opening 2a.
　そして、支燃ガスノズル３０２、４２の中心を通る第１直線Ｌ３と、支燃ガスノズル５２、６２の中心を通る第２直線Ｌ４とは、交差するようになっている。本実施形態では、第１直線Ｌ３と第２直線Ｌ４とは直交するようになっている。 A first straight line L3 passing through the centers of the fuel gas nozzles 302 and 42 intersects with a second straight line L4 passing through the centers of the fuel gas nozzles 52 and 62. In the present embodiment, the first straight line L3 and the second straight line L4 are orthogonal to each other.
　支燃ガスノズル３０２、４２は、支燃ガスノズル３と同様の構造を備えており、傾斜流路の傾斜のみ異なっている。支燃ガスノズル３０２の傾斜流路は、支燃開口部３０２ａに向かって炉内Ｓから見て左方に傾斜している。そして、支燃ガスノズル４２の傾斜流路は、支燃開口部４２ａに向かって炉から見て右方に傾斜している。 The combustion supporting gas nozzles 302, 42 have the same structure as the combustion supporting gas nozzle 3, and only the inclination of the inclined flow path is different. The inclined flow path of the combustion supporting gas nozzle 302 is inclined to the left as viewed from the inside of the furnace S toward the combustion supporting opening 302a. Then, the inclined flow path of the combustion supporting gas nozzle 42 is inclined rightward as viewed from the furnace toward the combustion supporting opening 42 a.
　支燃ガスノズル５２、６２は、支燃ガスノズル３と同様の構造を備えており、傾斜流路の傾斜のみ異なっている。支燃ガスノズル５２の傾斜流路は、支燃開口部５２ａに向かって炉内Ｓから見て下方に傾斜している。そして、支燃ガスノズル６２の傾斜流路は、支燃開口部６２ａに向かって炉内Ｓから見て上方に傾斜している。 The combustion supporting gas nozzles 52, 62 have the same structure as the combustion supporting gas nozzle 3, and only the inclination of the inclined flow path is different. The inclined flow path of the combustion supporting gas nozzle 52 is inclined downward as viewed from the inside of the furnace S toward the combustion supporting opening 52a. The inclined flow path of the fuel gas nozzle 62 is inclined upward as viewed from the inside of the furnace S toward the combustion opening 62a.
　したがって、支燃ガスノズル３０２、４２、５２、６２の傾斜流路は、それぞれ、その支燃開口部３０２ａ、４２ａ、５２ａ、６２ａに向かって同一の円周方向（炉内Ｓから見て燃料開口部２ａを中心として反時計方向）に傾斜している。 Therefore, the inclined flow channels of the combustion gas nozzles 302, 42, 52, 62 have the same circumferential direction (the fuel opening as viewed from the furnace S) toward the combustion openings 302a, 42a, 52a, 62a, respectively. It is inclined counterclockwise) around 2a.
　図６は、支燃ガスノズルの配置の変形例を示す、図２と同様の図である。図６に示されるように、支燃ガスノズル３０３、４３は、燃料ノズル２の外周側に一対として設けられ、本実施形態では、燃料ノズル２の同心円上において、炉内Ｓから見て上下に対称となるように設けられている。支燃ガスノズル３０３は、燃料ノズル２の上方に位置し、支燃ガスノズル４３は、燃料ノズル２の下方に位置する。支燃ガスノズル３０３、４３は、それぞれ炉内Ｓに対して開口する支燃開口部３０３ａ、４３ａを有している。支燃開口部３０３ａ、４３ａは、燃料開口部２ａに対して対向する位置に設けられている。 FIG. 6 is a view similar to FIG. 2 showing a modification of the arrangement of the combustion supporting gas nozzle. As shown in FIG. 6, the combustion supporting gas nozzles 303 and 43 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in the present embodiment, they are vertically symmetrical on the concentric circle of the fuel nozzle 2 as viewed from the furnace S. It is provided to be The combustion gas nozzle 303 is located above the fuel nozzle 2, and the combustion gas nozzle 43 is located below the fuel nozzle 2. The combustion supporting gas nozzles 303 and 43 have combustion supporting openings 303 a and 43 a that open to the furnace interior S, respectively. The support openings 303a, 43a are provided at positions facing the fuel opening 2a.
　支燃ガスノズル５３、６３は、燃料ノズル２の外周側に一対として設けられ、本変形例では、燃料ノズル２の同心円上において、炉内Ｓから見て左右に対称となるように設けられている。支燃ガスノズル５３は、燃料ノズル２の左方に位置し、支燃ガスノズル６３は、燃料ノズル２の右方に位置する。支燃ガスノズル５３、６３は、それぞれ炉内Ｓに対して開口する支燃開口部５３ａ、６３ａを有している。支燃開口部５３ａ、６３ａは、燃料開口部２ａに対して対向する位置に設けられている。 The combustion supporting gas nozzles 53, 63 are provided as a pair on the outer peripheral side of the fuel nozzle 2, and in the present modification, they are provided on the concentric circle of the fuel nozzle 2 so as to be symmetrical laterally as viewed from the furnace S. . The combustion gas nozzle 53 is located to the left of the fuel nozzle 2, and the combustion gas nozzle 63 is located to the right of the fuel nozzle 2. The combustion supporting gas nozzles 53, 63 respectively have combustion supporting openings 53a, 63a opened to the furnace interior S. The support openings 53a, 63a are provided at positions facing the fuel opening 2a.
　そして、支燃ガスノズル３０３、４３の中心を通る第１直線Ｌ５と、支燃ガスノズル５３、６３の中心を通る第２直線Ｌ６とは、交差するようになっている。本実施形態では、第１直線Ｌ５と第２直線Ｌ６とは直交するようになっている。 The first straight line L5 passing through the centers of the combustion gas nozzles 303 and 43 and the second straight line L6 passing through the centers of the combustion gas nozzles 53 and 63 intersect. In the present embodiment, the first straight line L5 and the second straight line L6 are orthogonal to each other.
　支燃ガスノズル３０３、４３は、支燃ガスノズル３と同様の構造を備えており、傾斜流路の傾斜のみ異なっている。支燃ガスノズル３０３の傾斜流路は、支燃開口部３０３ａに向かって炉内Ｓから見て左方に傾斜している。そして、支燃ガスノズル４３の傾斜流路は、支燃開口部４３ａに向かって炉から見て左方に傾斜している。 The supporting gas nozzles 303 and 43 have the same structure as the supporting gas nozzle 3 and differ only in the inclination of the inclined flow path. The inclined flow path of the combustion supporting gas nozzle 303 is inclined leftward as viewed from the inside of the furnace S toward the combustion supporting opening 303a. Then, the inclined flow path of the combustion supporting gas nozzle 43 is inclined leftward as viewed from the furnace toward the combustion supporting opening 43a.
　支燃ガスノズル５３、６３は、支燃ガスノズル３と同様の構造を備えており、傾斜流路の傾斜のみ異なっている。支燃ガスノズル５３の傾斜流路は、支燃開口部５３ａに向かって炉内Ｓから見て左方に傾斜している。そして、支燃ガスノズル６３の傾斜流路は、支燃開口部６３ａに向かって炉内Ｓから見て左方に傾斜している。 The supporting gas nozzles 53, 63 have the same structure as the supporting gas nozzle 3, and only the inclination of the inclined flow path is different. The inclined flow path of the combustion supporting gas nozzle 53 is inclined leftward as viewed from the inside of the furnace S toward the combustion supporting opening 53a. Then, the inclined flow path of the combustion supporting gas nozzle 63 is inclined leftward as viewed from the inside of the furnace S toward the combustion supporting opening 63a.
　したがって、支燃ガスノズル３０３、４３、５３、６３の傾斜流路は、それぞれ、その支燃開口部３０３ａ、４３ａ、５３ａ、６３ａに向かって同一の方向（炉内Ｓから見て左方）に傾斜している。 Therefore, the inclined flow channels of the fuel gas nozzles 303, 43, 53, 63 are inclined in the same direction (leftward as viewed from the furnace S) toward the combustion openings 303a, 43a, 53a, 63a, respectively. doing.
　図７は、図１の支燃ガスノズル３の拡大概略図である。図７に示されるように、炉外Ｔにおいて、支燃ガスノズル３の本体部３１には、径方向外方に突出するツバ３７が形成されている。また、炉体１には、炉外Ｔ側に突出する突出部１１が設けられ、突出部１１の外周面にはネジ部１１ａが形成されている。そして、支燃ガスノズル３には、ツバ３７と突出部１１とを固定する固定部材３８が設けられている。固定部材３８は、ネジ部１１ａと螺合するようになっている。固定部材３８は、本体部３１を炉体１に固定しており、固定部材３８を外す又は緩めることによって、支燃ガスノズル３を炉体１に対して本体部３１の軸心回りに回転させることができる。 FIG. 7 is an enlarged schematic view of the combustion supporting gas nozzle 3 of FIG. As shown in FIG. 7, at the outside of the furnace T, the main body 31 of the combustion support gas nozzle 3 is formed with a flange 37 projecting radially outward. Further, the furnace body 1 is provided with a projecting portion 11 projecting to the outside of the furnace T side, and a screw portion 11 a is formed on the outer peripheral surface of the projecting portion 11. Further, the support gas nozzle 3 is provided with a fixing member 38 for fixing the flange 37 and the protrusion 11. The fixing member 38 is screwed with the screw portion 11a. The fixing member 38 fixes the main body portion 31 to the furnace body 1, and rotates the support gas nozzle 3 about the axial center of the main body portion 31 with respect to the furnace body 1 by removing or loosening the fixing member 38. Can.
　本体部３１と先端部３２とは、一体として本体部３１の軸心回りに回転可能となっており、回転させることによって、先端部３２に形成された傾斜流路３２ａの傾斜の向きは、変更されるようになっている。 The main body portion 31 and the distal end portion 32 are integrally rotatable about the axial center of the main body portion 31. By rotating, the inclination direction of the inclined flow path 32a formed in the distal end portion 32 is changed It is supposed to be
　傾斜流路３２ａは、本体部３１の軸心に対して傾斜しているので、支燃開口部３ａは、先端部３２の炉内側端面３２ｂの中心に対して偏いした位置に形成される。ここで、上記のとおり、支燃ガスノズル３を炉体１に対して回転させると、支燃開口部３ａは、先端部３２の炉内側端面３２ｂの中心に対して回転する。そして、傾斜流路３２ａは、本体部３１の軸心に対して傾斜しているので、支燃ガスノズル３を炉体１に対して回転させると、支燃ガスノズル３の噴射方向が変化する。したがって、固定部材３８によって、炉体１に対する本体部３１の固定状態を変更することによって、支燃ガスノズル３の噴射方向を炉外Ｔから作業して変更することができる。 The inclined flow passage 32 a is inclined with respect to the axial center of the main body 31, so the support opening 3 a is formed at a position deviated with respect to the center of the furnace inner end surface 32 b of the tip 32. Here, as described above, when the combustion supporting gas nozzle 3 is rotated with respect to the furnace body 1, the combustion supporting opening 3 a rotates with respect to the center of the furnace inner end surface 32 b of the distal end portion 32. And since the inclination flow path 32a inclines with respect to the axial center of the main-body part 31, when the fuel gas nozzle 3 is rotated with respect to the furnace 1, the injection direction of the fuel gas nozzle 3 changes. Therefore, by changing the fixing state of the main body 31 to the furnace body 1 by the fixing member 38, it is possible to work from the outside of the furnace T to change the injection direction of the combustion supporting gas nozzle 3.
　図８は、支燃ガスノズル３の先端部３２の概略斜視図である。図８に示されるように、先端部３２の炉内側端面３２ｂには、傾斜流路３２ａの支燃開口部３ａの周囲に、噴射される支燃ガスの噴射方向を案内する案内溝３２ｃが形成されている。案内溝３２ｃは、炉内側端面３２ｂにおいて、先端部３２の内方側に凹む溝であり、噴射方向側の炉内側端面３２ｂの外縁は、溝の形状に合わせて切欠かれている。 FIG. 8 is a schematic perspective view of the tip 32 of the fuel gas nozzle 3. As shown in FIG. 8, in the furnace inner end face 32b of the tip end portion 32, a guide groove 32c for guiding the injection direction of the supporting gas to be injected is formed around the support opening 3a of the inclined flow path 32a. It is done. The guide groove 32c is a groove recessed inward of the tip end portion 32 at the furnace inner end surface 32b, and the outer edge of the furnace inner end surface 32b on the injection direction side is cut out in conformity with the shape of the groove.
　前記構成のバーナ１０によれば、次のような効果を発揮できる。 According to the burner 10 of the said structure, the following effects can be exhibited.
（１）図２に示されるように、支燃ガスノズル３、４の支燃開口部３ａ、４ａが燃料ノズル２の燃料開口部２ａに対して上下に対向する位置に設けられ、支燃ガスノズル３、４の傾斜流路は、支燃開口部３ａ、４ａに向かって燃料開口部２ａに近づくよう傾斜している。したがって、支燃ガスノズル３、４からの支燃ガスによって火炎を上下から押しつぶすことによって、火炎Ｆの形状を扁平とすることができる。 (1) As shown in FIG. 2, the combustion supporting openings 3 a and 4 a of the combustion supporting gas nozzles 3 and 4 are provided at positions facing the fuel opening 2 a of the fuel nozzle 2 up and down. The inclined flow channels 4 and 5 are inclined so as to approach the fuel opening 2a toward the support openings 3a and 4a. Therefore, the shape of the flame F can be made flat by crushing the flame from the top and the bottom with the support gas from the support gas nozzles 3 and 4.
（２）図３に示されるように、支燃ガスノズル５、６の支燃開口部５ａ、６ａが燃料ノズル２の燃料開口部２ａに対して左右に対向する位置に設けられ、支燃ガスノズル５、６の傾斜流路は、支燃開口部５ａ、６ａに向かって燃料開口部２ａから離れるよう傾斜している。したがって、支燃ガスノズル５、６からの支燃ガスによって火炎を左右に広げることによって、火炎Ｆの形状を扁平とすることができる。 (2) As shown in FIG. 3, the combustion supporting openings 5 a and 6 a of the combustion supporting gas nozzles 5 and 6 are provided at positions facing the fuel opening 2 a of the fuel nozzle 2 on the left and right. The inclined flow channels 6 and 6 are inclined away from the fuel opening 2a toward the support openings 5a and 6a. Therefore, the shape of the flame F can be made flat by spreading the flame from side to side by the supporting gas from the supporting gas nozzles 5 and 6.
（３）図４に示されるように、支燃ガスノズル３０１、４１の支燃開口部３０１ａ、４１ａが燃料ノズル２の燃料開口部２ａに対して上下に対向する位置に設けられ、支燃ガスノズル３０１、４１の傾斜流路は、支燃開口部３０１ａ、４１ａに向かって燃料開口部２ａに近づくよう傾斜している。そして、支燃ガスノズル５１、６１の支燃開口部５１ａ、６１ａが燃料ノズル２の燃料開口部２ａに対して左右に対向する位置に設けられ、支燃ガスノズル５１、６１の傾斜流路は、支燃開口部５１ａ、６１ａに向かって燃料開口部２ａから離れるよう傾斜している。さらに、支燃ガスノズル３０１、４１の中心を通る第１直線Ｌ１と、支燃ガスノズル５１、６１の中心を通る第２直線Ｌ２とは、直交するようになっている。したがって、支燃ガスノズル３０１、４１からの支燃ガスによって火炎を上下から押しつぶし、支燃ガスノズル５１、６１からの支燃ガスによって火炎を左右に広げることによって、火炎Ｆの形状を上下方向にさらに扁平とすることができる。 (3) As shown in FIG. 4, the combustion support openings 301 a and 41 a of the combustion support gas nozzles 301 and 41 are provided at positions facing the fuel opening 2 a of the fuel nozzle 2 up and down. The inclined flow channels 41 are inclined toward the fuel-retaining openings 301a and 41a so as to approach the fuel opening 2a. And, the support openings 51a, 61a of the support gas nozzles 51, 61 are provided at positions facing the fuel opening 2a of the fuel nozzle 2 on the left and right, and the inclined flow paths of the support gas nozzles 51, 61 are supported It inclines away from the fuel opening 2a toward the fuel opening 51a, 61a. Furthermore, the first straight line L1 passing through the centers of the fuel gas nozzles 301 and 41 and the second straight line L2 passing through the centers of the fuel gas nozzles 51 and 61 are orthogonal to each other. Therefore, the flame is squeezed from above and below by the supporting gas from the supporting gas nozzles 301 and 41, and the flame is spread to the left and right by the supporting gas from the supporting gas nozzles 51 and 61, thereby further flattening the shape of the flame F in the vertical direction. It can be done.
（４）図５に示されるように、支燃ガスノズル３０２、４２の支燃開口部３０２ａ、４２ａが燃料ノズル２の燃料開口部２ａに対して上下に対向する位置に設けられ、支燃ガスノズル３０２、４２の傾斜流路は、支燃開口部３０２ａ、４２ａに向かって炉内Ｓから見てそれぞれ、左方、右方に傾斜している。そして、支燃ガスノズル５２、６２の支燃開口部５２ａ、６２ａが燃料ノズル２の燃料開口部２ａに対して左右に対向する位置に設けられ、支燃ガスノズル５２、６２の傾斜流路は、支燃開口部５２ａ、６２ａに向かって炉内Ｓから見てそれぞれ、下方、上方に傾斜している。すなわち、支燃ガスノズル３０２、４２、５２、６２の傾斜流路は、それぞれ、その支燃開口部３０２ａ、４２ａ、５２ａ、６２ａに向かって同一の円周方向（炉内Ｓから見て燃料開口部２ａを中心として反時計方向）に傾斜している。さらに、支燃ガスノズル３０２、４２の中心を通る第３直線Ｌ３と、支燃ガスノズル５２、６２の中心を通る第４直線Ｌ４とは、直交するようになっている。したがって、火炎Ｆは、支燃ガスノズル３０２、４２、５２、６２からの支燃ガスによって、炉内Ｓから見て燃料開口部２ａを中心として反時計方向の旋回流となり、炉内雰囲気が撹拌でき、炉内の温度分布を均一にすることができる。なお、旋回の方向は時計方向でもよく、支燃ガスノズルの数は４に限定されず、複数あればよい。 (4) As shown in FIG. 5, the combustion supporting openings 302 a and 42 a of the combustion supporting gas nozzles 302 and 42 are provided at positions facing the fuel opening 2 a of the fuel nozzle 2 up and down. , 42 are inclined leftward and rightward, respectively, as viewed from the furnace interior S toward the combustion supporting openings 302a, 42a. Further, the combustion supporting openings 52a and 62a of the combustion supporting gas nozzles 52 and 62 are provided at positions facing the fuel opening 2a of the fuel nozzle 2 on the left and right, and the inclined flow paths of the combustion supporting gas nozzles 52 and 62 As viewed from inside the furnace S toward the fuel openings 52a and 62a, they are respectively inclined downward and upward. That is, the inclined flow channels of the fuel gas nozzles 302, 42, 52, 62 have the same circumferential direction (the fuel opening as viewed from the furnace S) toward the combustion openings 302a, 42a, 52a, 62a, respectively. It is inclined counterclockwise) around 2a. Furthermore, the third straight line L3 passing through the centers of the combustion gas nozzles 302 and 42 and the fourth straight line L4 passing through the centers of the combustion gas nozzles 52 and 62 are orthogonal to each other. Therefore, the flame F becomes a swirling flow counterclockwise around the fuel opening 2a viewed from the furnace S by the combustion gas from the combustion gas nozzles 302, 42, 52, 62, and the atmosphere in the furnace can be agitated. The temperature distribution in the furnace can be made uniform. The direction of the swirl may be clockwise, and the number of fuel gas nozzles is not limited to four, and may be plural.
（５）図６に示されるように、支燃ガスノズル３０３、４３の支燃開口部３０３ａ、４３ａが燃料ノズル２の燃料開口部２ａに対して上下に対向する位置に設けられ、支燃ガスノズル３０３、４３の傾斜流路は、支燃開口部３０３ａ、４３ａに向かって炉内Ｓから見てそれぞれ、左方に傾斜している。そして、支燃ガスノズル５３、６３の支燃開口部５３ａ、６３ａが燃料ノズル２の燃料開口部２ａに対して左右に対向する位置に設けられ、支燃ガスノズル５３、６３の傾斜流路は、支燃開口部５３ａ、６３ａに向かって炉内Ｓから見てそれぞれ、左方に傾斜している。すなわち、支燃ガスノズル３０３、４３、５３、６３の傾斜流路は、それぞれ、その支燃開口部３０３ａ、４３ａ、５３ａ、６３ａに向かって同一の方向（炉内Ｓから見て左方）に傾斜している。さらに、支燃ガスノズル３０３、４３の中心を通る第５直線Ｌ５と、支燃ガスノズル５３、６３の中心を通る第６直線Ｌ６とは、直交するようになっている。したがって、支燃ガスノズル３０３、４３、５３、６３からの支燃ガスによって火炎Ｆに指向性をもたすことができ、対象物に火炎Ｆを向けたり、対象物に火炎Ｆが直接当たることを避けるようにすることができる。 (5) As shown in FIG. 6, the combustion support openings 303 a and 43 a of the combustion support gas nozzles 303 and 43 are provided at positions facing vertically to the fuel opening 2 a of the fuel nozzle 2. The inclined flow channels 43 are inclined to the left as viewed from the furnace interior S toward the combustion supporting openings 303a and 43a. Further, the combustion support openings 53a, 63a of the combustion gas nozzles 53, 63 are provided at positions facing the fuel opening 2a of the fuel nozzle 2 on the left and right, and the inclined flow paths of the combustion gas nozzles 53, 63 As viewed from the inside of the furnace S toward the fuel openings 53a and 63a, they are respectively inclined to the left. That is, the inclined flow channels of the fuel gas nozzles 303, 43, 53, 63 are inclined in the same direction (leftward as viewed from the furnace S) toward the combustion openings 303a, 43a, 53a, 63a, respectively. doing. Furthermore, the fifth straight line L5 passing through the centers of the combustion gas nozzles 303 and 43 and the sixth straight line L6 passing through the centers of the combustion gas nozzles 53 and 63 are orthogonal to each other. Therefore, it is possible to give directivity to the flame F by the supporting gas from the supporting gas nozzles 303, 43, 53, 63, to direct the flame F to the object or to directly hit the flame F to the object. It can be avoided.
　なお、図６では、支燃ガスノズル３０３、４３、５３、６３の傾斜流路は、それぞれ、その支燃開口部に向かって左方に傾斜していたが、右方、上方、下方、また任意の方向に傾斜させてもよい。また、支燃ガスノズルの数は４に限定されず、複数あればよい。 In FIG. 6, the inclined flow channels of the fuel gas nozzles 303, 43, 53, 63 are inclined to the left toward the combustion opening, but the right, upper, lower, or any other direction It may be inclined in the direction of In addition, the number of fuel gas nozzles is not limited to four, and it is sufficient if there are a plurality.
　また、図２～図６では、支燃ガスノズルの支燃開口部は、燃料ノズル２の燃料開口部２ａに対して、上下、左右に配置されているが、燃料開口部２ａに対する配置は、上下、左右に限定されず、燃料開口部２ａに対してどの方向に配置されてもよい。 In FIGS. 2 to 6, the support opening of the support gas nozzle is disposed vertically and horizontally relative to the fuel opening 2 a of the fuel nozzle 2, but the arrangement relative to the fuel opening 2 a is However, the present invention is not limited to the left and right, and may be arranged in any direction with respect to the fuel opening 2a.
（６）固定部材３８は、本体部３１を炉体１に固定しており、固定部材３８を外す又は緩めることによって、支燃ガスノズル３を炉体１に対して回転させることができる。すなわち、傾斜流路３２ａは、炉体１に対して回転可能に設けられている。したがって、傾斜流路３２ａを炉体１に対して回転させることによって、支燃ガスの噴射方向を変更することができる。その結果、炉の形状や処理材の形状、特性に応じ、火炎の形状をフレキシブルに変更することができる。また、固定部材３８が炉外Ｔにあるため、炉外Ｔから簡単に支燃ガスの噴射方向を変更することができる。 (6) The fixing member 38 fixes the main body portion 31 to the furnace body 1, and the supporting gas nozzle 3 can be rotated relative to the furnace body 1 by removing or loosening the fixing member 38. That is, the inclined channel 32 a is provided rotatably with respect to the furnace body 1. Therefore, by rotating the inclined flow path 32 a with respect to the furnace body 1, it is possible to change the injection direction of the support gas. As a result, the shape of the flame can be flexibly changed according to the shape of the furnace, the shape of the treatment material, and the characteristics. In addition, since the fixing member 38 is located outside the furnace T, it is possible to easily change the injection direction of the combustion support gas from the outside of the furnace T.
（７）先端部３２の炉内側端面３２ｂには、傾斜流路３２ａの支燃開口部３ａの周囲に、噴射される支燃ガスの噴射方向を案内する案内溝３２ｃが形成されている。したがって、案内溝３２ｃによって、支燃ガスの噴射方向の指向性を向上させることができる。その結果、例えば、支燃ガスノズル３が、火炎を扁平させる又は火炎を旋回させるよう支燃ガスを噴射している場合、案内溝３２ｃによって、火炎の扁平性又は旋回性を向上させることができる。 (7) At the furnace inner end face 32b of the tip end portion 32, a guide groove 32c for guiding the injection direction of the injected supporting gas is formed around the support opening 3a of the inclined flow path 32a. Therefore, the directivity of the fuel gas injection direction can be improved by the guide groove 32c. As a result, for example, when the combustion supporting gas nozzle 3 injects the combustion supporting gas so as to flatten the flame or swirl the flame, the flatness or the swirling property of the flame can be improved by the guide groove 32c.
（８）燃料ノズル２の燃料噴射量は、調整弁２５ｂの開度を変更することによって、変更可能となっており、支燃ガスノズル３のガス噴射量は、調整弁３５ｂの開度を変更することによって、変更可能となっている。したがって、燃料噴射量及びガス噴射量を調整することによって、火炎の大きさや扁平率を容易に変更することができる。 (8) The fuel injection amount of the fuel nozzle 2 can be changed by changing the opening degree of the adjusting valve 25b, and the gas injection amount of the support gas nozzle 3 changes the opening degree of the adjusting valve 35b. It is possible to change by. Therefore, by adjusting the fuel injection amount and the gas injection amount, the flame size and flatness can be easily changed.
（９）先端部３２の炉内側端面３２ｂは、炉壁面９１から、支燃ガスノズル３の内方側に位置している。したがって、支燃開口部３ａから噴射されるガスが炉内環境から受ける影響を小さくすることができ、支燃開口部３ａから噴射されるガスの噴射方向の指向性を向上させることができる。また、炉内側端面３２ｂが炉壁面９１から凹むことによって、炉内側端面３２ｂに対して影となる部分を作ることができ、炉内の輻射熱から炉内側端面３２ｂを保護して、耐久性を向上させることができる。ただし、先端部３２の炉内側端面３２ｂは、支燃開口部３ａから噴射されるガスが炉壁凹面９２の角部９２ｃに衝突しない位置となっている。したがって、支燃開口部３ａから噴射されるガスの噴射方向を変更しながらも、噴射されるガスが炉壁凹面９２の角部９２ｃに衝突してガス流れが乱れたり、炉内への噴射方向が変化することを抑制できる。 (9) The furnace inner end surface 32 b of the tip end portion 32 is located on the inward side of the fuel gas nozzle 3 from the furnace wall surface 91. Therefore, the influence of the gas injected from the combustion support opening 3a from the furnace environment can be reduced, and the directivity of the injection direction of the gas injected from the combustion support opening 3a can be improved. In addition, the in-furnace end face 32b is recessed from the furnace wall surface 91, so that a portion to be shaded with respect to the in-furnace end face 32b can be formed, thereby protecting the in-furnace end face 32b from radiant heat in the furnace and improving durability It can be done. However, the furnace inner end surface 32 b of the tip end portion 32 is a position at which the gas injected from the combustion support opening 3 a does not collide with the corner portion 92 c of the furnace wall concave surface 92. Therefore, while changing the injection direction of the gas injected from the support opening 3a, the injected gas collides with the corner 92c of the furnace wall concave 92 to disturb the gas flow, or the injection direction into the furnace Can be suppressed.
（１０）支燃ガスノズル３は、本体部３１を炉体１に固定する固定部材３８を備えているので、炉体１に対して、傾斜流路３２ａを所定の噴射方向でより確実に固定することができる。 (10) Since the support gas nozzle 3 includes the fixing member 38 for fixing the main body 31 to the furnace body 1, the inclined flow path 32a is more reliably fixed to the furnace body 1 in a predetermined injection direction. be able to.
（１１）固定部材３８は、炉外Ｔ側から、本体部３１を炉体１に固定するようになっているので、炉内環境の影響を受けずに簡単に炉外Ｔから本体部３１の固定や噴射方向の調整作業を行うことができる。 (11) Since the fixing member 38 fixes the main body 31 to the furnace body 1 from the outside of the furnace T, the outside of the furnace T from the outside of the furnace T can be easily without being affected by the furnace environment. Fixation and adjustment of the injection direction can be performed.
（別の実施形態）
　上記実施形態では、支燃ガスノズル３が炉体１に対して回転可能となっているが、支燃ガスノズル３において、先端部３２が本体部３１に対して回転可能となっていてもよい。図９は、先端部３２が本体部３１に対して回転可能な支燃ガスノズルの概略斜視図である。図９に示されるように、本体部３１の炉内Ｓ側端部の外周面にはネジ部３１ｂが形成されており、先端部３２は、ネジ部３１ｂに螺合して本体部３１に取り付けられるようになっている。したがって、先端部３２は、本体部３１に対して回転可能に取り付けられるようになっている。そして、先端部３２を本体部３１に対して回転させて傾斜の向きを調整することによって、支燃ガスノズル３が炉体１に対して回転する場合と同様に、支燃ガスノズル３の噴射方向を変更することができる。 (Another embodiment)
In the above embodiment, the fuel gas nozzle 3 is rotatable relative to the furnace body 1. However, in the fuel gas nozzle 3, the tip 32 may be rotatable relative to the main body 31. FIG. 9 is a schematic perspective view of a combustion supporting gas nozzle whose tip 32 is rotatable relative to the main body 31. As shown in FIG. As shown in FIG. 9, a screw portion 31b is formed on the outer peripheral surface of the in-furnace S side end portion of the main body portion 31, and the tip end portion 32 is screwed into the screw portion 31b and attached to the main body portion 31. It is supposed to be Therefore, the distal end portion 32 is rotatably attached to the main body portion 31. Then, by adjusting the direction of inclination by rotating the tip end portion 32 with respect to the main body portion 31, the injection direction of the support gas nozzle 3 is set in the same manner as in the case where the support gas nozzle 3 rotates with respect to the furnace body 1. It can be changed.
　図１０は、図９の先端部３２の概略斜視図である。図１０に示されるように、先端部３２の炉内側端面３２ｂには、先端部３２を本体部３１に対して回転させる回転治具が係合可能なスリット溝３２ｄが形成されている。スリット溝３２ｄは、炉内側端面３２ｂの外周縁から中心に向かうように延びており、中心に対して対称となるよう、例えば２つ形成されている。スリット溝３２ｄは、支燃開口部３ａと干渉しないようになっている。 FIG. 10 is a schematic perspective view of the tip 32 of FIG. As shown in FIG. 10, the furnace inner end face 32b of the tip end portion 32 is formed with a slit groove 32d that can be engaged with a rotating jig that rotates the tip end portion 32 with respect to the main body portion 31. The slit grooves 32d extend from the outer peripheral edge of the furnace inner end face 32b toward the center, and are formed, for example, two so as to be symmetrical with respect to the center. The slit grooves 32d do not interfere with the support opening 3a.
　上記別の実施形態によれば、次のような効果を発揮できる。 According to the above another embodiment, the following effects can be exhibited.
（１）先端部３２が本体部３１に対して回転可能とすることによって、傾斜流路３２ａの向きを調整する機構を小さくし、支燃ガスノズル３の構造を簡素化することができる。 (1) By making the tip end portion 32 rotatable with respect to the main body portion 31, the mechanism for adjusting the direction of the inclined flow path 32a can be reduced, and the structure of the fuel gas nozzle 3 can be simplified.
（２）先端部３２にスリット溝３２ｄが形成されていることによって、先端部３２を本体部３１に対して容易に回転させることができる。その結果、支燃ガスノズル３の噴射方向を容易に変更することができる。 (2) By forming the slit groove 32 d in the tip end portion 32, the tip end portion 32 can be easily rotated with respect to the main body portion 31. As a result, the injection direction of the combustion supporting gas nozzle 3 can be easily changed.
　上記実施形態では、調整弁２５ｂの開度を変更することによって、燃料噴射量を変更するようになっているが、燃料供給圧を変更することによって、燃料噴射量を変更してもよい。また、調整弁２５ｂが設けられず、供給弁２５ａが調整弁２５ｂの機能を備えていてもよい。 In the above embodiment, the fuel injection amount is changed by changing the opening degree of the adjustment valve 25b. However, the fuel injection amount may be changed by changing the fuel supply pressure. Further, the adjustment valve 25b may not be provided, and the supply valve 25a may have the function of the adjustment valve 25b.
　上記実施形態では、調整弁３５ｂ、４５ｂの開度を変更することによって、ガス噴射量を変更するようになっているが、ガス供給圧を変更することによって、ガス噴射量を変更してもよい。また、調整弁３５ｂ、４５ｂが設けられず、供給弁３５ａ、４５ａが調整弁３５ｂ、４５ｂの機能を備えていてもよい。 In the above embodiment, the gas injection amount is changed by changing the opening degree of the adjusting valves 35b and 45b, but the gas injection amount may be changed by changing the gas supply pressure. . Further, the adjustment valves 35b and 45b may not be provided, and the supply valves 35a and 45a may have the function of the adjustment valves 35b and 45b.
　特許請求の範囲に記載された本発明の精神及び範囲から逸脱することなく、各種変形及び変更を行うことも可能である。 Various changes and modifications can be made without departing from the spirit and scope of the present invention as set forth in the claims.
　本発明では、様々な形状の火炎を得ることが可能なバーナを提供することができるので、産業上の利用価値が大である。 In the present invention, since it is possible to provide a burner capable of obtaining flames of various shapes, industrial value is great.
１　炉体　
２　燃料ノズル　
２ａ　燃料開口部　
２５　燃料管　
２５ａ　供給弁　２５ｂ　調整弁　
３　支燃ガスノズル　
３ａ　支燃開口部　
３１　本体部　３１ａ　ガス流路　３１ｂ　ネジ部　
３２　先端部　３２ａ　傾斜流路　
３２ｂ　炉内側端面　３２ｃ　案内溝　３２ｄ　スリット溝　
３５　ガス管　３７　ツバ　
３８　固定部材　
３５ａ　供給弁　３５ｂ　調整弁　
３０１　支燃ガスノズル　３０１ａ　支燃開口部　
３０２　支燃ガスノズル　３０２ａ　支燃開口部　
３０３　支燃ガスノズル　３０３ａ　支燃開口部　
４　支燃ガスノズル　４ａ　支燃開口部　
４１　支燃ガスノズル　４１ａ　支燃開口部　
４２　支燃ガスノズル　４２ａ　支燃開口部　
４３　支燃ガスノズル　４３ａ　支燃開口部　
４５ａ　供給弁　４５ｂ　調整弁　
５　支燃ガスノズル　５ａ　支燃開口部　
５１　支燃ガスノズル　５１ａ　支燃開口部　
５２　支燃ガスノズル　５２ａ　支燃開口部　
５３　支燃ガスノズル　５３ａ　支燃開口部　
６　支燃ガスノズル　６ａ　支燃開口部　
６１　支燃ガスノズル　６１ａ　支燃開口部　
６２　支燃ガスノズル　６２ａ　支燃開口部　
６３　支燃ガスノズル　６３ａ　支燃開口部　
９１　炉壁面　９２　炉壁凹面　９２ｃ　角部　
１０　バーナ　
１１　突出部　１１ａ　ネジ部　
Ｆ　火炎　
Ｓ　炉内　
Ｔ　炉外　
Ｌ１　第１直線　Ｌ２　第２直線　
Ｌ３　第１直線　Ｌ４　第２直線　
Ｌ５　第１直線　Ｌ６　第２直線　 1 furnace body
2 Fuel nozzle
2a Fuel opening
25 fuel pipe
25a supply valve 25b adjustment valve
3 Fuel gas nozzle
3a support opening
31 body 31a gas flow path 31b screw
32 tip 32a inclined channel
32b furnace inner end face 32c guide groove 32d slit groove
35 gas pipe 37 flange
38 Fixed member
35a supply valve 35b adjustment valve
301 support gas nozzle 301a support opening
302 support gas nozzle 302a support opening
303 support gas nozzle 303a support opening
4 Support gas nozzle 4a Support opening
41 Support gas nozzle 41a Support opening
42 support gas nozzle 42a support opening
43 support gas nozzle 43a support opening
45a supply valve 45b adjustment valve
5 Support gas nozzle 5a Support opening
51 Support gas nozzle 51a Support opening
52 Fuel gas nozzle 52a Fueling opening
53 Fuel gas nozzle 53a Fueling opening
6 Support gas nozzle 6a Support opening
61 Support gas nozzle 61a Support opening
62 Support gas nozzle 62a Support opening
63 Support gas nozzle 63a Support opening
91 furnace wall 92 furnace wall concave 92c corner
10 burners
11 Protrusions 11a Screws
F flame
S inside the furnace
T outside the furnace
L1 first straight line L2 second straight line
L3 first straight line L4 second straight line
L5 1st straight line L6 2nd straight line

Claims (7)

  1. 　燃料を噴射する燃料ノズルと、
    　前記燃料ノズルの外周側に一対として設けられ、支燃ガスを噴射する支燃ガスノズルと、を備えており、
    　前記支燃ガスノズルの炉内への支燃開口部は、前記燃料ノズルの炉内への燃料開口部に対して対向する位置に設けられ、
    　前記支燃ガスノズルの先端部は、前記支燃ガスノズルの本体部の軸心方向に対して傾斜する傾斜流路を有し、
    　前記傾斜流路は、前記支燃開口部に向かって前記燃料開口部に近づくよう傾斜していることを特徴とする、バーナ。
    A fuel nozzle that injects fuel;
    And a support gas nozzle provided as a pair on the outer peripheral side of the fuel nozzle for injecting a support gas;
    The combustion supporting opening of the fuel gas nozzle into the furnace is provided at a position facing the fuel opening of the fuel nozzle into the furnace,
    The tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle,
    The burner according to claim 1, wherein the inclined flow path is inclined toward the fuel opening toward the support opening.
  2. 　燃料を噴射する燃料ノズルと、
    　前記燃料ノズルの外周側に一対として設けられ、支燃ガスを噴射する支燃ガスノズルと、を備えており、
    　前記支燃ガスノズルの炉内への支燃開口部は、前記燃料ノズルの炉内への燃料開口部に対して対向する位置に設けられ、
    　前記支燃ガスノズルの先端部は、前記支燃ガスノズルの本体部の軸心方向に対して傾斜する傾斜流路を有し、
    　前記傾斜流路は、前記支燃開口部に向かって前記燃料開口部から離れるよう傾斜していることを特徴とする、バーナ。
    A fuel nozzle that injects fuel;
    And a support gas nozzle provided as a pair on the outer peripheral side of the fuel nozzle for injecting a support gas;
    The combustion supporting opening of the fuel gas nozzle into the furnace is provided at a position facing the fuel opening of the fuel nozzle into the furnace,
    The tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle,
    The burner according to claim 1, wherein the inclined flow path is inclined toward the support opening away from the fuel opening.
  3. 　燃料を噴射する燃料ノズルと、
    　前記燃料ノズルの外周側に二対として設けられ、支燃ガスを噴射する支燃ガスノズルと、を備えており、
    　二対の前記支燃ガスノズルの炉内への支燃開口部は、前記燃料ノズルの炉内への燃料開口部に対して、それぞれ対向する位置に設けられ、
    　前記支燃ガスノズルの先端部は、前記支燃ガスノズルの本体部の軸心方向に対して傾斜する傾斜流路を有し、
    　一方側の一対の支燃ガスノズルの傾斜流路は、その支燃開口部に向かって前記燃料開口部に近づくよう傾斜しており、
    　他方側の一対の支燃ガスノズルの傾斜流路は、その支燃開口部に向かって前記燃料開口部から離れるよう傾斜しており、
    　前記一方側の一対の支燃ガスノズルの中心を通る第１直線と、前記他方側の一対の支燃ガスノズルの中心を通る第２直線とは、交差するようになっていることを特徴とする、バーナ。
    A fuel nozzle that injects fuel;
    And a fuel gas nozzle provided in two pairs on the outer peripheral side of the fuel nozzle and injecting the fuel gas.
    The combustion supporting openings of the two pairs of the combustion gas nozzles into the furnace are provided at positions facing the fuel openings of the fuel nozzle into the furnace, respectively.
    The tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle,
    The inclined flow channels of the pair of combustion gas nozzles on one side are inclined toward the fuel opening toward the combustion opening,
    The inclined flow channels of the other pair of combustion supporting gas nozzles are inclined to be away from the fuel opening toward the combustion opening thereof;
    The first straight line passing through the centers of the pair of fuel gas nozzles on one side and the second straight line passing through the centers of the pair of fuel gas nozzles on the other side intersect with each other. Burner.
  4. 　燃料を噴射する燃料ノズルと、
    　前記燃料ノズルの外周側に円周方向に複数設けられ、支燃ガスを噴射する支燃ガスノズルと、を備えており、
    　前記支燃ガスノズルの先端部は、前記支燃ガスノズルの本体部の軸心方向に対して傾斜する傾斜流路を有し、
    　前記支燃ガスノズルの傾斜流路は、それぞれ、その支燃開口部に向かって同一の円周方向に傾斜していることを特徴とする、バーナ。
    A fuel nozzle that injects fuel;
    A plurality of support gas nozzles provided circumferentially in the circumferential direction on the outer peripheral side of the fuel nozzle, for injecting a support gas;
    The tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle,
    The burner according to claim 1, wherein the inclined flow channels of the combustion gas nozzle are inclined in the same circumferential direction toward the combustion opening of the combustion gas nozzle.
  5. 　燃料を噴射する燃料ノズルと、
    　前記燃料ノズルの外周側に円周方向に複数設けられ、支燃ガスを噴射する支燃ガスノズルと、を備えており、
    　前記支燃ガスノズルの先端部は、前記支燃ガスノズルの本体部の軸心方向に対して傾斜する傾斜流路を有し、
    　前記支燃ガスノズルの傾斜流路は、それぞれ、その支燃開口部に向かって同一方向に傾斜していることを特徴とする、バーナ。
    A fuel nozzle that injects fuel;
    A plurality of support gas nozzles provided circumferentially in the circumferential direction on the outer peripheral side of the fuel nozzle, for injecting a support gas;
    The tip end portion of the support gas nozzle has an inclined flow path which is inclined with respect to the axial direction of the main body portion of the support gas nozzle,
    The burner according to claim 1, wherein the inclined flow channels of the combustion gas nozzle are inclined in the same direction toward the combustion opening.
  6. 　前記傾斜流路は、前記バーナが取り付けられる炉体に対して回転可能に設けられている、請求項１～５のいずれか１つに記載のバーナ。
    The burner according to any one of claims 1 to 5, wherein the inclined flow passage is rotatably provided relative to a furnace body to which the burner is attached.
  7. 　前記先端部の炉内への開口には、前記開口から噴射される支燃ガスの噴射方向を案内する案内溝が形成されている、請求項１～５のいずれか１つに記載のバーナ。 The burner according to any one of claims 1 to 5, wherein a guide groove for guiding an injection direction of the combustion supporting gas injected from the opening is formed at an opening of the tip portion into the furnace.
PCT/JP2018/037536 2017-12-19 2018-10-09 Burner WO2019123783A1 (en)

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