KR100470653B1 - An apparatus for igniting a burner in the radient tube of an annealing furnace - Google Patents

Abstract

A burner igniter of the annealing furnace is provided for igniting a burner mounted inside a radiant tube of the annealing furnace.

The burner ignition apparatus 1 includes: an apparatus body 10 mounted to the annealing furnace protrusion end 4a of the client tube 4 of the annealing furnace 2; And a combustion gas supply pipe 22 sequentially connected to the front of the apparatus body 10, an injection nozzle tube 24, and a combustion tube 26, and a flame passing through the apparatus body 10 inside the apparatus body 10. A sensing member 28 disposed on the pipe member 20 provided on one side of the burner 6; And a casing 46 connected to the rear of the apparatus body 10 and to which gas and air supply pipes 42 and 44 are connected, to smoothly mix gas and air into the casing 46. Combustion gas mixing means (50), air pressure adjusting means (70) provided below the casing (46), and provided on the side of the casing (46) of the combustion gas through the combustion gas mixing means (50) Combustion gas mixing and supply unit 40 having a fuel economy adjusting means 90 to adjust the fuel economy.

Therefore, according to the present invention, while smoothing the mixing of the gas and air supplied from the ignition device used during the initial ignition of the burner for heating the hand-drill furnace, the fuel efficiency adjustment of the gas and air is smoothly mixed It is to provide an effect that is simple and convenient to use.

Description

Burner ignition device of annealing furnace {AN APPARATUS FOR IGNITING A BURNER IN THE RADIENT TUBE OF AN ANNEALING FURNACE}

The present invention relates to a burner ignition device for igniting a combustion burner mounted inside a radiant tube of an annealing furnace, and more particularly, to smoothly mix gas and air supplied to the ignition device. It is to provide a burner ignition device of the annealing furnace so that it is easy to adjust the fuel efficiency of the gas and air that is smoothly mixed.

In general, annealing furnace (ANNEALING FURNACE) is the core equipment to determine the material of the metal by heat-treating the cold-rolled steel sheet using radiant heat, such annealing furnace to recrystallize and grow the rolling structure by heating the steel, the internal stress of the steel And the annealing furnace is heated according to the temperature set according to the carbon and additional elements to keep the internal stress of the steel softened. It is to have the material of the desired metal.

On the other hand, in general, the heat treatment sequence of the steel sheet is a preheating section for removing the rolling oil and foreign substances on the surface of the steel sheet, a direct fire furnace section for rapidly raising the temperature of the steel sheet, a heating zone section for heating the steel sheet, and a heated steel sheet. It consists of a crack zone section for maintaining the temperature of the uniformity, an overaging zone section for preventing the aging of the slow cooling steel sheet to gradually cool the steel sheet, and finally the quench zone section.

In this case, the heating tube and the crack zone in the heat treatment sequence are generally called an annealing section (Radiant Tube Heating Section), the main equipment of the annealing furnace used for such an annealing section is the combustion gas that is supplied, that is, coke oven gas Combustion main burner which burns COG and AIR to supply heat, burner igniter used to ignite such burner, and heat to steel plate by convection and radiation of exhaust gas burned by burner It can be divided into a radiant tube (Radoamt Tube) for the transmission, Figures 1 and 2 shows an auxiliary ignition for igniting a conventional burner.

That is, as shown in FIGS. 1 and 2, the gas and air supply pipes 110 and 120 provided with the flow control valves 112 and 122 are connected to the rear of the body 130 of the ignition device 100, respectively. A flame detection rod 170 and an insulator 170a surrounding the flame 130 are disposed at the center of the body 130, and a gas injection nozzle 140 in which a combustion gas in which gas and air are mixed is injected in front of the body 130. Is provided, and a combustion tube 150 for guiding the flame is assembled in front of the combustion tube 150, and the combustion tube 150 is equipped with an electrode spark rod 160 for combustion of combustion gas.

Therefore, in the conventional burner ignition device 100, when gas and air are supplied into the igniter body 130 through the respective supply pipes 110 and 120, through the passage 130a therein. When supplied to the combustion tube 150 side through the injection hole 140a of the injection nozzle 140, by the spark generated by the operation of the electrode spark rod 160 to the power applied from the connected power supply 162. The combustion gases are ignited.

1 and 2, when the flame detection rod 170 detects a flame, the transformer 172 and the power supply 162 installed at the detection rod 170 and the spark rod 160 are controlled by the controller ( As the power supply of the spark rod 160 is cut off in an electrically connected state, the spark generation is stopped, and the flame which is eventually burned ignites the annealing furnace burner not shown in the drawing, and the annealing furnace burner is ignited. When the ignition device 100 is extinguished.

However, as shown in FIG. 2, in the conventional annealing furnace burner ignition apparatus 100, each supply pipe 110 (in a state in which the supply amount is controlled by the valves 112 and 122, respectively). Since gas and air introduced into the body passageway 130a of the ignition device 100 through 122 are moved to the injection nozzle 140 through the body passageway 130a without being exchanged mixed, The length of flame (F) is considerably unstable as it is lengthened and shortened by the combustion gas injected in a state in which normal combustion conditions are not satisfied, that is, in a state that is not completely mixed.

At this time, the flame (F) flows back through the injection nozzle 140 due to the pressure of the combustion gas generated instantaneously hinders the smooth combustion of the injection gas through the hole 140a of the injection nozzle 140, or detects the flame The flame is not detected by the burnout of the flame sensing rod insulator 170 while the flame is directly in contact with the insulator 170a of the rod 170, and thus the end of the electrode spark rod 160 is continuously operated due to the continuous operation of the electrode spark rod 160. There was a problem in that it is difficult to generate sparks in the sequel.

In addition, the combustion state through the flame generated in a state where such gas and air are completely mixed with each other, so that toxic gases such as carbon monoxide (CO) are released, and especially when there is more gas than air at low power, the combustion tube ( 150) It causes a facility accident in which a micro-explosion is caused by flame backflow, and the annealing operation of the steel sheet through the annealing furnace does not operate normally.

The present invention has been made in order to improve the various problems of the prior art as described above, the object of which is to ensure a smooth mixing of the gas and air supplied to the ignition device flame instability, due to incompletely mixed combustion gas An object of the present invention is to provide a burner ignition apparatus for an annealing furnace that prevents problems such as backflow and burnout of flame detection rods and spark rods.

As a technical configuration for achieving the above object, the present invention, in the burner ignition apparatus of the annealing furnace is installed on one side of the annealing furnace burner disposed in the radiant tube through the furnace wall of the annealing furnace to perform the initial ignition of the burner. An apparatus body is mounted to the annealing path protrusion end of the client tube; Wow,

A pipe member comprising a combustion gas supply pipe, an injection nozzle pipe, and a combustion tube sequentially connected to the front of the device body, and having a flame sensing rod through the device body provided on one side of the burner; And,

A casing connected to the rear of the apparatus body and connected to a gas and an air supply pipe, combustion gas mixing means installed to smoothly mix gas and air into the casing, and air pressure adjusting means provided below the casing; And a burner ignition apparatus of the annealing furnace, comprising: a combustion gas mixing and supplying unit provided on the side of the casing to adjust fuel efficiency of the combustion gas through the combustion gas mixing means.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a schematic perspective view showing an annealing furnace installation state of the burner ignition device excellent gas and air mixing according to the present invention, Figure 4 is an exploded perspective view showing a burner ignition device of the present invention, Figure 5 is a burner of the present invention 6 is a plan view showing the ignition device, and FIG. 6 is a detailed view showing the configuration of the gas and air mixing unit in the burner ignition device of the present invention.

3 shows the installation state of the burner ignition device 1 of the present invention annealing furnace, the burner ignition device 1 of the present invention is largely the apparatus body 10, the pipe member 20 and the combustion gas mixture And it can be divided into the supply unit 40, the components 10, 20, 40 will be described in more detail as follows.

First, looking at the annealing furnace (2) in which the device (1) of the present invention is installed, the U-shaped radiant tube (4) is applied to radiate heat to the material which is annealed through the furnace wall (2a). A burner 6 for heating the radiant tube 4 is actually disposed in the ant tube 4, and a pipe member 20 of the ignition device 1 according to the present invention is disposed on one side of the burner 6. Although not shown in the drawings, a main gas and an air supply pipe for supplying a mixed gas of gas and air as fuel to the burner 6 are provided through the furnace wall protruding portion 4a of the tube 4. It is connected to the burner (6).

3 to 5 show the apparatus body 10 of the burner ignition apparatus 1 of the present invention, the apparatus burner 10 of the present invention is annealed in the annealing furnace radiant tube 4. It is mounted on the protruding end 4a, and the fixed plate portion at the corner thereof is firmly fixed to the fixed plate fixed to the radiant tube protruding end 4a as a bolt.

Next, FIG. 3 and FIG. 4 show the pipe member 20 of the burner ignition device 1 according to the present invention. The pipe member 20 of the present invention is sequentially in front of the apparatus body 10. Composed of the combustion gas supply pipe 22, the injection nozzle tube 24 and the combustion tube 26, which is connected to the inner side of the pipe member 20, the flame detection rod for detecting this when the flame of the ignition device (1) 28 is arrange | positioned.

That is, as shown in Figure 4, the combustion gas supply pipe 22 of the combustion gas pipe member 20 is fixed to the device body 10 in the form of a screw, the combustion gas supply pipe 22, and the injection nozzle Tube 24 is assembled to each other in the form of a screw through the fixing cap 25, and the combustion tube 26 is connected to the front end of the injection nozzle tube 24 in the form of a screw.

4 and 5, in the injection nozzle pipe 24 through which the flame detection rod 28 passes through the center, a plurality of injection nozzles 24a in the circumferential direction are integrally formed at the distal end thereof. The formed injection nozzle plate 24b is provided.

In addition, as shown in Figure 4, the flame detection rod 28 is wrapped around the center of the tube member 20, the insulator 28a is wrapped, the rear end of the flame detection rod 28 is wrapped with the insulator The portion is bent 28c and drawn out through the sidewall of the device body 10, and the transducer 28b is connected to the drawn flame detecting rod 28c.

That is, as shown in Figure 5, when the flame (F) is generated while the combustion gas is burned by the spark generated by the electrode spark rod (not shown),-the injection nozzle plate 24b of the electrode and the + electrode While electrically communicating due to the infection between the sensing rods 28, the transducer 28b outside the device 1 detects this while detecting the flame occurrence.

In addition, since the combustion gas supply pipe 22 and the injection nozzle pipe 24 and the combustion tube 26 constituting the pipe member 20 of the present invention are assembled in the form of a screw, respectively, the assembly and disassembly if necessary can be easily performed. It is a constitution.

Next, FIGS. 4 to 6 show the combustion gas mixing and supplying portion 40 of the burner ignition device 1 according to the present invention, and the combustion gas mixing and supplying portion 40 of the present invention is the casing 46 again. ), The combustion gas mixing means 50, the air pressure adjusting means 70 and the fuel economy adjusting means 90, these components (46) (50) (70) (90) As follows.

First, Figures 4 and 5 show the casing 46 of the device 1 of the present invention, wherein the casing 46 of the present invention is internal as a tube 12 behind the device body 10. The casing 46 of the present invention is connected to each other so that the gas and air supply pipes 42 and 44 are respectively connected to the inside of the apparatus to supply gas and air, which are mixed with each other and become combustion gas. Of course, although not shown in the drawings, each of the pipes 42 and 44 is provided with a flow control valve for adjusting the supply amount of gas and air.

Next, as shown in FIGS. 4 and 5, the combustion gas mixing means 50, which is installed to smoothly mix the gas and the air inside the casing 46, is again a cylindrical guide 52 and a combustion gas mixture. 54 is provided.

That is, the cylindrical guide 52 is formed of a hollow cylindrical body to be seated in the cylindrical opening 46a formed in the casing 46, as shown in Figure 4, the cylindrical guide 52 On both side walls, openings 52a and 52b are formed integrally with the gas and air supply ports 47a and 47b connected to both sides of the casing 46 to allow gas and air to pass therethrough.

4 and 5, the combustion gas mixture 54 is formed into a cylindrical body and inserted into the cylindrical guide 52. Gas and air are provided on the lower wall of the combustion gas mixture 54. As shown in FIG. And respective gases, air, and the combustion gas discharge passages 54a, 54b, 54c in which the mixed combustion gas is introduced and discharged, and the gas and the air are partially cut and integrally formed.

In the center of the combustion gas mixture 54, a support end 58 having a hole into which the support rod 56 is inserted through the spring 56a is integrally connected to the walls of the mixture 54. The support rod 56 is connected and fixed to the expansion and contraction unit 76 to be described below so that the mixture 54 flows in the cylindrical guide 52 integrally with the support rod 56 according to the vertical movement of the expansion and contraction member 76. do.

4 and 6 show the air pressure adjusting means 70 provided below the casing 46 in the combustion gas mixing and supply portion 40 of the apparatus 1 of the present invention. Pneumatic pressure adjusting means 70 is connected to the bottom of the casing 46 in the form of a flange, the bottom member 72 is connected to the branch pipe 44a branched from the air supply pipe 42, and the bottom member ( The supporting rods 56 are fixed between the lower portion of the casing 46 and the upper and lower support disks 74 and pass through the center of the combustion gas mixture 54 of the combustion gas mixing means 50. It is composed of an elastic member 76 is connected to the lower end of the.

That is, as shown in FIG. 6, since the elastic member 76 is composed of a rubber plate having elasticity, and the lower end portion of the supporting rod 56 is connected through the supporting disk 74, the branch pipe When the pressure of the air supplied through the 44a becomes higher than a certain level, the elastic member 76 of the rubber plate expands upward to integrally mix the mixture 54 in which the support rod 56 and the support rod 56 are connected to the cylindrical guide 52. ), And the openings 52a and 52b of the cylindrical guide 52 and the openings 54a and 54b for the gas and air passages of the mixture 54 communicate with each other. It is supplied in).

Therefore, as shown in FIGS. 4 and 5, in the state where gas and air are completely mixed in the combustion gas mixture 54 of the combustion gas mixing means 50, the combustion gas is connected to the casing 46. (12) and when it is injected into the combustion tube 25 through the injection nozzle 24a of the apparatus body 10, the supply pipe 22, and the injection pipe 24, it will ignite as a spark, and eventually the apparatus 1 of this invention (1). ) Is to prevent incomplete combustion as much as gas and air is better than before.

Next, in FIGS. 4 and 5, the combustion gas mixing and supplying portion 40 of the apparatus 1 of the present invention is provided on the side of the casing 46 to adjust fuel efficiency of the combustion gas through the combustion gas mixing means 50. The fuel economy adjustment means 90 shown in the figure is shown. The fuel economy adjustment means 90 of this invention is further provided with the spindle shaft 94, the operation plate 96, and the scale display body 98. As shown in FIG.

That is, the spindle shaft 94 is fastened in a screw form to the fastener 92 integrally formed on one side of the cylindrical guide 52 of the combustion gas mixing means 50, so that the spindle shaft 94 is rotated When driven, the fastener 92 is moved back and forth along this, and when the fastener 92 is moved, the cylindrical guide 52 is rotated forward and backward in the casing 46, which is the Since portions of both side wall openings 52a and 52b formed in the cylindrical guide 52 and in which gas and air communicate with each other rotate integrally, the lower openings 54a and 54b of the combustion gas mixture 54 corresponding thereto are in contact with each other. The portion is variable, and thus, the gas supply amount and the air input amount are variably adjusted according to the rotation amount of the spindle shaft 92.

Next, as shown in FIGS. 4 and 5, the operation plate 96 is connected as the spindle shaft 94 and the universal joint 96a, and the fixing plate 96b provided at one side of the casing 46 and its side portion. ) Is installed on the rotary shaft 96c which is connected to rotate through the unitary body. When the operation plate 96 is rotated, the rotary shaft 96c rotates integrally to rotate the spindle shaft 94 so that the fastener 92 In this case, the spindle shaft and the rotating shaft are connected to the universal joint 96a to move the fastener 92 installed in the cylindrical guide 52 while the spindle shaft 94 is inclined.

5, the scale display panel 98 is provided on the rotation shaft 96c between the fixed plate 96b and the operation plate 96, so that the operator can set the reference plate formed on the operation plate 96. It is comprised so that the rotation amount of the spindle shaft 94 may be grasped integrally with the rotating body through the scale 96d.

Referring to the operation of the present invention made in the above configuration in detail as follows.

As shown in FIGS. 3 to 7, a mixture of gas and air is provided for the initial ignition of the burner 6 which heats in the radiant tube 4 of the annealing furnace used to characterize the properties of the steel sheet. The burner ignition apparatus 1 of the annealing furnace of the present invention which has improved the properties and prevented incomplete combustion is as follows.

First, as shown in FIGS. 4 and 5, the air supply pipe 44 of the gas and air supply pipes 42 and 44 connected to the casing 46 of the combustion gas mixing and supplying portion 40 of the apparatus 1 of the present invention. ), When air is supplied to the air passage 54b and the cylindrical guide 52 in a state where the mixture 54 seated on the cylindrical guide 52 inside the casing 46 to which the air supply pipe 44 is connected is lowered. Since the opening 52b of () does not pass through, air flows in into the bottom member 72 of the air pressure adjusting means 70 below the casing 46 through the branch pipe 44a.

Therefore, when the pressure of the air introduced into the bottom member 72 is increased, since the expansion and contraction member 76 in the bottom member 72 is made of a rubber plate, as shown in FIG. At this time, while the support rod 56 connected to the expansion and contraction member 76 is integrally raised, the combustion gas mixture 54, which is a cylindrical body, rises inside the cylindrical guide 52.

As a result, the gas and air openings 52a and 52b of the cylindrical guide 52 and the gas and air passage openings 54a and 54b of the mixture 54 communicate with each other, and through the air supply pipe 44. The air is introduced into the mixture 54, where the air is continuously supplied through the supply pipe 44 and the branch pipe 44a, so that the expansion and contraction member 76 is kept in an inflated state continuously.

Next, only the air once supplied into the mixture 54 is supplied such that the air is discharged through the casing 46 and the tubular member 20, wherein the air is injected into the spray tube 24 and the tubular member 20. At the same time cooling the combustion tube 26, the attached fine slip, etc. are removed to prolong the service life of the apparatus.

Then, when gas, that is, coke oven gas (COG) is supplied to the mixture 54 inside the casing 46 through the gas supply pipe 42, the air and the mixture 54 are smoothly mixed, and thus mixed The combustion gas is supplied through the casing 46 and the pipe 12 and the supply body 22 of the apparatus body 10 and the pipe member 20 through only the discharge opening 54c of the mixture 54 of the injection nozzle pipe 24. When injected into the combustion tube 26 through the nozzle 24a, the flame is generated by ignition by the spark rod not shown in the drawing, and such a flame ignites the burner 6.

Therefore, in the ignition device 1 of the present invention, compared to the conventional ignition device 100, once the air is above a certain pressure, the gas is supplied into the mixture 54, and the gas supplied at the same time is mixed in the mixture 54. Since it is discharged through only the discharge opening 54c after being mixed, the gas and air must be discharged after being completely mixed in the mixture 54, which improves the gas and air mixability.

Next, as shown in FIG. 5, when a flame is generated in the combustion tube 26 of the pipe member 20, the flame detection rods 28 are different from each other through the center of the injection nozzle plate 24b. When the transformer 28b detects and sends a signal by the ionization current (0 to 5μ) present in the flame (F), the operation of the electrode spark rod is stopped and the ignition operation is completed.

On the other hand, the operator can easily adjust the fuel economy of the gas and air as the apparatus 1 of the present invention, as shown in Figs. 4 and 5, the operation panel 96 of the fuel consumption adjusting means 90 is scaled When the reference axis 96d is turned in the + or-direction of the scale display body 98, the rotary shaft 96c rotates integrally with the operation panel 96, and the spindle shaft is connected as the universal joint 96a. 94 is inclined to move the fastener 92 of the cylindrical guide 52, and when the cylindrical guide 52 is rotated in the seated state of the casing 46, the cylindrical guide 52 While the common portions of the side wall openings 52a and 52b and the lower openings 54a and 54b of the mixture 54 are adjusted, the fuel consumption is adjusted while the supply amount of gas and air is adjusted.

At this time, although schematically shown in the drawing, if the opening width of the openings 52a, 52b, 54a, 54b is adjusted in advance, the fuel efficiency of the gas and the air of the combustion gas can be adjusted while differentially adjusting the supply amounts of the gas and the air. Will be able to adjust.

As a result, according to the burner ignition device 1 of the annealing furnace of the present invention, it is primarily supplied to the combustion tube 26 in a state where gas and air are completely mixed, so that various conventional problems due to incomplete combustion during ignition are eliminated. It is prevented and the tube member 20 as the initial air is cooled to extend its life, while the fuel efficiency of gas and air can be easily manipulated, which is convenient to use.

As described above, according to the burner ignition apparatus of the annealing furnace of the present invention, the instability of the flame and the reverse flow of the flame and the flame detection rod and the spark rod by the incompletely mixed combustion gas are achieved by smoothly mixing the gas and air supplied to the ignition apparatus. It is to provide an excellent effect to prevent the occurrence of problems such as burn out in advance.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to know that those who have knowledge of this can easily know.

1 is a perspective view showing a burner ignition device used in the conventional annealing furnace

Figure 2 is a state diagram showing the operating state of the conventional annealing furnace burner ignition device

Figure 3 is a schematic perspective view showing an annealing furnace installation state of the burner ignition device according to the present invention

4 is an exploded perspective view showing the burner ignition device of the present invention;

Figure 5 is a plan view showing a burner ignition device of the present invention

Figure 6 is a detailed view showing a gas and air mixing configuration in the burner ignition device of the present invention

Explanation of symbols on the main parts of the drawings

1 .... burner igniter 2 .... annealing furnace

4 .... radiant tube 6 .... annealing furnace burner

10 .... Body 20 .. Combustion gas pipe member

22 .... Combustion gas supply pipe 24 .... Injection nozzle pipe

26..combustion tube 28..flame detection rod

40 .... Combustion gas mixing and supply 42 .... gas supply line

44 .... air supply 46 .... casing

50 .... Combustion gas mixing means 52 .... Cylindrical guide

54 .... Combustion gas mixture 56 .... Support rod

70 .... Pneumatic adjustment means 72 .... Casing bottom member

73 .... Casing cover 76 .... telescopic member

90 ... fuel economy 92 .... fasteners

94 .... spindle axis 96 ....

98 .... tick mark F .... flame

Claims (5)

In the burner ignition apparatus 1 of the annealing furnace which is installed on one side of the annealing furnace burner 6 arranged in the radiant tube 4 through the furnace wall 2a of the annealing furnace 2 to perform initial ignition of the burner. , An apparatus body (10) mounted on the annealing path protruding end (4a) of the client tube (4); Wow, Composed of the combustion gas supply pipe 22, the injection nozzle pipe 24 and the combustion tube 26 are sequentially connected to the front of the device body 10, the flame detection rod through the device body 10 inside A pipe member 20 is disposed 28 is provided on one side of the burner (6); And, A casing 46 connected to the rear of the apparatus body 10 and connected to the gas and air supply pipes 42 and 44, and a combustion gas installed to smoothly mix gas and air into the casing 46. Mixing means 50, the air pressure adjusting means 70 provided to the lower side of the casing 46 and the side of the casing 46 is provided to the fuel efficiency of the combustion gas through the combustion gas mixing means 50 Burner ignition apparatus of the annealing furnace, characterized in that consisting of; combustion gas mixing and supply unit 40 having a fuel economy adjusting means 90 to adjust The combustion gas supply pipe (22) of the combustion gas pipe member (20) is fixed to the apparatus body (10) in the form of a screw, and the combustion gas supply pipe (22) and the injection nozzle pipe (24). Is connected in the form of a screw through the fixing cap 25, the combustion tube 26 is connected in the form of a screw to the distal end of the injection nozzle pipe 24, Burner ignition of the annealing furnace, characterized in that the injection nozzle pipe 24 is provided with a spray nozzle plate 24b through which a flame detection rod 28 passes through the center and the injection nozzles 24a are integrally formed in the circumferential direction thereof. Device According to claim 1, wherein the casing 46 of the combustion gas mixing and supply unit 40 is composed of a cylindrical body is connected to the tube (12) integrally to communicate with the inside of the rear of the device body 10, The combustion gas mixing means 50 is seated in a cylindrical opening 46a formed in the casing 46 and communicates with an opening 52a for communicating with the gas and air supply ports 47a and 47b of the casing 46. Cylindrical guide (52) formed at both sides thereof); And, Inserted into the cylindrical guide 52, each of the passage (54a) (54b) (54c) is formed integrally with the inlet and discharge of the gas and air and the mixed combustion gas, the support rod 56 in the center Burner ignition apparatus of the annealing furnace, characterized in that consisting of; combustion gas mixture 54 formed integrally with the support end 58 is inserted and supported According to claim 1 or 3, The air pressure adjusting means 70 of the combustion gas mixing and supply unit 40, A bottom member 72 connected to and fixed to a lower portion of the casing 46 by a flange and connected to a branch pipe 44a of the air supply pipe 42; And, It is fixed between the bottom member 72 and the lower portion of the casing 46, the support disk 74 is attached to the upper, lower side, and passes through the center of the combustion gas mixture 54 of the combustion gas mixing means 50 Burner ignition apparatus of the annealing furnace, characterized in that consisting of; elastic member 76 is connected to the lower end of the support rod 56 According to claim 1 or claim 3, Fuel economy control means 90 of the combustion gas mixing and supply unit 40; Fastening integrally formed on one side of the cylindrical guide 52 of the combustion gas mixing means 50 Spindle shaft 94 is fastened to the sphere 92 in the form of a screw; And, It is connected to the spindle shaft 94 and the universal joint (96a), is installed on the rotating shaft (96c) connected to rotate through the casing 46 and the fixed plate (96b) installed on one side thereof integrally, the reference scale is marked Operation panel 96; and, Burner ignition apparatus of the annealing furnace, characterized in that consisting of; graduation indicator 98 provided on the rotating shaft 96c between the fixed plate (96b) and the operation plate (96)