KR100631109B1 - Combustion air splitting device for recuperative/regenerative single tube burner - Google Patents

Abstract

A combustion air divisional supply apparatus of a regenerative single tube burner is provided to use a single body apparatus in a small space to reduce system installation cost. A combustion air divisional supply apparatus of a regenerative single tube burner includes a burner body, a gas inlet pipe(50), an ignition rod, a combustion air supply pipe(70), and an air suction/discharge conversion device. The burner body is flange-coupled with the air suction/discharge conversion device. The gas inlet pipe is formed at a center of the burner body. The ignition rod is installed at the gas inlet pipe in its longitudinal direction. The combustion air supply pipe surrounds the gas inlet pipe and the ignition rod. The air suction/discharge conversion device adjusts flow pattern of the combustion air. The combustion air divisional supply apparatus includes a combustion air supply pipe, a combustion air introduction hole, a pair of guide rails, an opening/closing pipe, and a moving handle for adjusting movement of the opening/closing pipe.

Description

Combustion air splitting device for recuperative / regenerative single tube burner

1 is a system diagram showing a twin regenerative burner system of a conventional regenerative combustion system.

Figure 2 is a perspective view of a conventional honeycomb regenerative combustion burner system.

Figure 3 is a perspective view of a conventional radiant tubular heat storage burner system.

Figure 4 is a side cross-sectional view showing a heat exchanger built-in compact heat storage burner system according to the present invention.

FIG. 5 is a partial cross-sectional view of the heat exchanger built-in compact heat storage burner of FIG.

Figure 6 is an enlarged cross-sectional view of the burner body portion of the heat storage built-in compact heat storage burner of FIG.

Figure 7 is an exploded perspective view showing a state in which the combustion air supply pipe is installed inside the burner body of the present invention.

8 is an exploded perspective view showing a coupling structure of the opening and closing plate coupled to the combustion inlet hole of the combustion air supply pipe of the present invention.

Figure 9 is a schematic cross-sectional view showing a burner body coupling structure of the moving handle for moving the opening and closing plate of the present invention.

10 is a conceptual perspective view showing a structure for driving the opening and closing plate and the moving handle of the present invention using a rack and pinion.

Figure 11 is a perspective view of the main portion showing an organic coupling relationship between the communication tube and the pivot valve portion, which is the main portion of the present invention.

12 is a conceptual view showing the inflow and exhaust of exhaust gas and air through the through-hole formed in the low temperature side damper portion, which is the main part of the present invention.

Figure 13 is a conceptual diagram showing the inflow and outflow of exhaust gas and air through the through-hole formed in the high temperature side damper portion that is the main portion of the present invention.

<Brief description of the major symbols in the drawings>

10; Heat storage chamber 11; Heat storage

12; Case 21; Low Temperature Side Damper

22; Low temperature side air supply pipe 23; Low temperature side exhaust gas discharge pipe

24; Low temperature side communication tube 25; Low Temperature Side Damper Pipe

29; Through hole 31; High Temperature Side Damper

32; Hot air supply pipe 33; High-temperature side exhaust gas discharge pipe

35; High temperature side lower damper tube 39; Through hole

40; Burner body 41; Air supply-exhaust blocker

50; Gas inlet pipe 51; Gas Nozzle Ball

60; Ignition rod 70; Combustion Air Supply Pipe

71; Inner nozzle pipe 80; Heat exchanger

81; Outer nozzle pipe 82; Heat exchanger fin inside

83; Outer heat exchanger fin 90; tube

100; Burner 112; Support shaft

113; Wings 114; Stopper

400: combustion air split supply device 410: combustion air inlet

430: guide rail 440: opening and closing plate

450: moving handle 451: sealing member

453: scale 460: drive means

461: rack 463: pinion

The present invention relates to a self-regenerative burner that mixes and combusts air and fuel at an appropriate level, and accumulates thermal energy of the combusted high-temperature exhaust gas. Particularly, the combustion air introduced through the intake and exhaust switching device is outside the combustion air supply pipe. Flame-free by dropping the peak temperature emitted by the burner by controlling the supply ratio of the combustion air supplied through the flow path between the inside of the heat exchange engine or by opening and closing the combustion air splitter and supplying the combustion air into the combustion air supply pipe. The present invention relates to a combustion air split supply device for a heat exchanger fin-type self-regenerative single tube burner that minimizes generation of nitrogen oxides and provides a combustion air supply ratio with excellent combustion efficiency.

In general, combustors such as burners are used to inject fuel and air at an appropriate mixing ratio to combust them, and transfer thermal energy generated during the combustion to other media to melt or change temperature, and to convert electricity or kinetic energy. Device.

Such a combustor or burner should realize optimization of combustion reaction and heat transfer characteristics in an industrial furnace, and achieve optimal temperature in the furnace.

In addition, the combustor or burner should be easy and safe to handle, the working environment should not be harmful to humans, and the ideal burner should be able to maintain high efficiency while minimizing heat, gas, fluid and pollutants emitted.

In other words, the combustor or burner is to pursue high efficiency, while minimizing the amount of NOx (nitrogen oxide) emitted during combustion, while obtaining flame stability is the main purpose of the burner development is a task to be pursued in the future.

This is an ideal task, but it is not yet fully solved.

That is, conventionally, the amount of NOx (nitrogen oxides) emitted during combustion of the combustor was excessive, which was a dangerous level harmful to the environment or the human body.

Therefore, many studies on the development of a combustor or burner for producing low NOx have been carried out at home and abroad for a long time. The main research areas were non-equilibrium combustion methods such as multi-stage combustion and lean / rich combustion. .

In addition, there is an exhaust gas recirculation combustion method that reduces NOx by lowering the maximum flame temperature by recirculating the combustion exhaust gas into an internal circulation method or an external circulation method. Selective Catalytic Reduction (SCR) and non-selective catalyst are used as post-treatment methods. There is a technique using a selective non-catalytic reduction (SNCR) device.

In addition, there have been many attempts such as the technology of using the reburning effect by the stepwise supply of fuel injection, and the uniformity of temperature by the surface / catalyst combustion, which is still being developed.

However, it is not easy to develop an energy-saving low NOx (nitrogen oxide) combustor that has little flame stability and no smoke, and has high thermal efficiency in an industrial furnace system.

This is because lowering the flame temperature in order to reduce NOx inevitably results in a decrease in energy efficiency.

Hereinafter, 1) non-equilibrium combustion method and 2) exhaust gas recycle combustion method related to the present invention among the NOx (nitrogen oxide) suppression methods previously researched and developed will be described sequentially.

1) Unbalanced Combustion Method

This non-equilibrium combustion method is again divided into two stages of air combustion and Bias combustion, which are the same in that they control the supply ratio of air for combustion to suppress the generation of NOx.

That is, when looking at the generation ratio of NOx (nitrogen oxide) due to combustion, the portion which is the highest generation point is generated at the mixing ratio excellent in combustion efficiency by the constant mixing between fuel and air.

In other words, although the thermal efficiency is the highest in this blending ratio, NOx (nitrogen oxide) production reaches the highest point, and it is said to be double rate.

Therefore, this unbalanced combustion method is to supply air beyond the blending ratio between fuel and air for the maximum production of NOx.

More specifically, the two-stage air supply combustion method is a combustion method in which air is divided and supplied into first and second stages.

In the first stage, the amount of NOx (nitrogen oxide) is supplied in a smaller amount than the amount of air that reaches the highest point, and in the second stage, the excess amount of air is supplied to avoid the peak point of NOx (nitrogen oxide) as a whole. .

Of course, the same purpose can be achieved by supplying excess air in the first step and supplying a small amount of air in the second step.

On the other hand, the Bias combustion method is a method of implementing the two areas of the low air ratio region and the high air ratio region to be adjacent to each other.

In other words, one burner burns at low air ratio, the other burns at high air ratio, and operates at an appropriate air ratio as a whole, and a burner nozzle that divides one burner large and the other smaller is an example. to be.

After all, this method also unevenly distributes the air and avoids the peak value of NOx production.

      2) Exhaust gas recirculation method

The exhaust gas recirculation method is a method of suppressing NOx generated by increasing the volume of the combustion gas and lowering the temperature of the flame by recirculating and combusting the combustion gas once burned.

At this time, when the exhaust gas is recycled, the exhaust gas may be circulated in the combustion air, but may be recycled in the supplied fuel.

In any case, the exhaust gas recirculation method again includes external and internal corrosion, and the external type, the former, is a method in which a part of the exhaust gas emitted by combustion is mixed with input fuel or combustion air pipe and fed back to the combustor.

The latter, on the other hand, is a method of recycling exhaust gases in the furnace.

Thus both reduce the inflow of air for combustion as both exhaust gases are recycled back to the air for combustion.

This, of course, would lower the flame temperature and thus reduce the production of NOx.

As a result, 1) non-equilibrium combustion and 2) exhaust gas recirculation control the amount of air required for combustion to avoid the compounding ratio where NOx (nitrogen oxide) production is at its maximum.

It can be seen that the solution to suppress the generation of NOx (nitrogen oxide) described above to some extent, but when applied to a combustor or burner, it is still a problem how to improve the thermal efficiency.

Accordingly, the exhaust gas recirculation method is applied to a burner or the like to seek a method of simultaneously obtaining an inhibitory effect of nitrogen oxides.

That is, in order to prevent the high temperature exhaust gas generated by the flame from being discharged to the air, it is recycled, but the heat energy of the exhaust gas is collected in the regenerator and reused again.

In the burner that maintains a high temperature due to the accumulation of thermal energy in the heat storage device, combustion can be performed even in an atmosphere of low oxygen concentration, and thus it is possible to suppress the generation of NOx (nitrogen oxide) by avoiding the peak point naturally.

In addition, in industrial furnaces that do not have existing heat storage, when the flame is emitted from the burner, the internal temperature is high and the low part is partitioned.

In other words, high temperature and clear fire zones are present locally in some areas.

On the contrary, in the burner that is thermally stored and always maintains a high temperature, when the flame is emitted, the temperature is generally not high and the lower portion is not partitioned, and the flame is formed long, and the combustion temperature is combusted to some degree.

This extends to the extent of being flameless and suppresses the generation of NOx (nitrogen oxides), and has the effect of efficiently managing the thermal energy to be discarded.

Then, as described above, by looking at the conventional embodiment (burner) in the form of regenerated and reused in the burner by applying the exhaust gas recirculation method, and looks at the problem.

First, as shown in FIG. 1, there is a twin regenerative burner system 200 in which combustors A and B, such as a burner for combustion, are installed to face left and right.

That is, the two opposed combustors A and B are provided with separate heat accumulators C and D, respectively.

Therefore, when one combustor (A) emits thermal power and emits high-temperature exhaust gas, waste heat energy is accumulated in the heat accumulator (D) attached to the opposed combustor (B).

While maintaining this state for about 20 to 80 seconds, the next combustor (B) generates fire power and the heat accumulator (C) attached to the other combustor (A) facing accumulates heat.

That is, it works alternately, and when one side fires, the other side is used to accumulate thermal energy.

Second, Figure 2 is for the same purpose as the above-described twin regenerative burner system, the combustor (E, F) is installed side by side side by side to generate heat, and the exhaust heat of the exhaust gas accumulates in the regenerator (G, H) It shows a honeycomb-type regenerative combustion system 300 in the form.

Third, Figure 3 is for the same purpose as the burner system described above, a radiator having a burner (A, B), such as a burner for combustion to be opposite to both ends of the radiant tube, the radiator having a built-in heat storage body therein Unheated tubular regenerative burner system.

In this system, when one combustor (A) fires and emits high-temperature exhaust gas, the high-temperature exhaust gas pushed through the radiant tube is connected to the regenerator (D) built in the opposing combustor (B). Accumulate thermal energy.

While maintaining this state for a certain time, when the next combustor B generates fire power, the other combustor A which opposes accumulates thermal energy.

That is, it works alternately, and when one side fires, the other side is used to accumulate thermal energy.

By the way, in the case of such a regenerative combustor, two combustors are necessarily required, and the production cost is high.

In particular, in the case of a combustor of less than 1000KW of combustion amount, the application cost of the system is too high compared to the combustion amount, so that practical application is difficult.

In addition, it is difficult to install a burner in a combustion furnace with a small installation space.

In addition, twin regenerative burner systems, honeycomb regenerative combustion systems and radiant tubular systems, which must be installed in two units, are space-constrained due to their large volume.

That is, it is difficult to apply to a heat treatment furnace or a chemical reaction furnace, such as a carburizing furnace which limits the maximum burner size and the number of burners.

An object of the present invention for solving the above problems is supplied through the flow path between the outside of the combustion air supply pipe and the inside of the heat exchange engine, the combustion air introduced through the intake and exhaust switching device, or open and close the combustion air split supply device By appropriately controlling the supply ratio of the combustion air injected into the combustion air supply pipe, the peak temperature from the burner is reduced to minimize the generation of nitrogen oxides by flameless combustion and at the same time, the combustion air supply ratio is excellent in combustion efficiency. The present invention provides a combustion air split supply device for a self-regenerative single tube burner having a heat exchanger fin.

Another object of the present invention for solving the above problems is made of a single gas can be used in a small space, economical because a small system installation cost is generated, can be applied to a heat treatment furnace or a chemical reactor such as carburizing furnace The present invention provides a split air supply of a self-heating single tube burner with a built-in heat exchanger fin.

In order to achieve the above object, according to the present invention, a combustion air splitting and supplying apparatus of a heat exchanger-coated self-regenerative single-tube burner includes an intake / exhaust switching device having a heat storage chamber and a burner body flanged to each other, and the center of the burner body The gas inlet pipe is formed in the ignition rod is installed along the longitudinal direction of the gas inlet pipe, the combustion air supply pipe is coupled to one side of the burner body to surround the gas inlet pipe and the ignition rod, one end of the combustion air supply pipe In the heat exchanger fin built-in self-regulatory single-tube burner composed of a combustion air split-supply device coupled to the slide movable state to control the flow pattern of the combustion air supplied into the combustion air supply pipe through the intake and exhaust switching device, the combustion The split air supply unit has one end connected to the burner body so that the gas inlet pipe is wrapped therein. Combustion air supply pipe to be combined, combustion air inlet hole formed to cut the upper end of the combustion air supply pipe so as to introduce external air, and the combustion air inlet hole is parallel to the combustion air supply pipe in the longitudinal direction. A pair of guide rails are formed so as to be coupled between the pair of guide rails and the left and right slide plates are coupled to one side of the opening and closing plates to open and close the combustion air inlet hole while the left and right slides are moved. It extends to the outside of the burner body, characterized in that consisting of a configuration including a moving handle to adjust the movement amount of the opening and closing plate.

Here, it is preferable to provide a separate drive means on the outer side of the burner body, and to move the movement handle to the drive means to the left and right linear movement by the forward and reverse operation of the drive means.

Here, the drive means is preferably composed of a pinion gear and a rack gear operated by a drive motor.

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

According to the present invention, as shown in Fig. 4 showing the burner viewed from the front and FIG. 5 showing the viewed from the side, the intake / exhaust switch 30 having the heat accumulator body 10 having two heat accumulators is provided. It is formed and integrated with the burner.

At this time, the burner 100 has an outermost portion of the burner body 40 flanged to the intake / exhaust switch 30 and constitutes the outermost part, and at the center of the burner body 40, a plurality of gas nozzles at the ends thereof. The gas inlet pipe 50 in which the ball 51 was formed is provided.

In addition, the ignition rod 60 downward in an oblique line from the inlet side of the gas inlet pipe 50 is located in the longitudinal direction is an ignition device.

The gas nozzle hole 51 is provided in the radiant tube side end part of the said gas inflow pipe 50, and the gas which flowed in is blown out.

In addition, the outer side of the gas inlet pipe 50 is surrounded by a combustion air supply pipe 70 coupled to the burner body portion 40, the inner nozzle tube 71 at the radiant tube side end of the combustion air supply pipe 70 Is installed.

As shown in FIG. 6, the combustion air introduced through the air supply passage is supplied through a flow path formed between the outside of the combustion air supply pipe 70 and the inside of the heat exchange engine 80, or is operated on the combustion air split supply device 400. As a result, a part of air is introduced into the combustion air supply pipe 70.

7 to 8 is an exploded perspective view showing a combustion air split supply apparatus according to the present invention Figure 7 is a combustion air supply pipe is installed inside the burner body of the present invention, Figure 8 is a combustion inlet of the combustion air supply pipe of the present invention An exploded perspective view showing the coupling structure of the opening and closing plate coupled to the ball.

Combustion air divided supply device 400 of the present invention as shown in the Figure, the combustion air supply pipe 70, one end is coupled to the burner body portion 40 so that the gas inlet pipe 50 is wrapped therein, Combustion air inlet hole 410 formed to cut the upper end of the combustion air supply pipe 70 in an appropriate range to introduce external air therebetween, and the combustion air supply pipe 70 having the combustion air inlet hole 410 interposed therebetween. A pair of guide rails 430 formed in parallel in the longitudinal direction of the opening and closing plate is coupled between the pair of guide rails 430 to open and close the combustion air inlet hole 410 while sliding left and right 440 and one end is coupled to one side of the opening and closing plate 440, the other end is composed of a moving handle 450 to extend the outside of the burner body 40 to adjust the movement amount of the opening and closing plate 440. do.

According to the present invention, the opening and closing plate 440 slides on the guide rail 430 with the left and right movements of the movable handle 450 connected thereto, thereby adjusting the size of the combustion air inlet hole 410 to supply the combustion air supply pipe ( 70) By arbitrarily controlling the supply ratio of the combustion air injected into the furnace, the peak temperature emitted from the burner is reduced to minimize the generation of nitrogen oxides by the flameless combustion and provide the combustion air supply ratio with excellent combustion efficiency. To do it.

At this time, the moving handle 450 may be manually operated outside the burner body 40, but more preferably so that the drive means 460 is operated by a separate power outside the burner body 40 is provided. In addition, the moving handle 450 is interlocked with the driving means 460 so as to move left and right linearly by forward / reverse motion of the driving means 460.

Figure 9 is a schematic cross-sectional view showing a burner body coupling structure of the moving handle for moving the opening and closing plate of the present invention, as shown in the figure the sealing member (b) on the coupling end of the burner body 40 and the moving handle 450 ( 451 may be inserted, and the sealing member 451 serves to maintain airtightness.

In addition, during the manual operation of the moving handle 450, the appropriate friction force is applied, so that the moving handle 450 is gradually moved to easily adjust the opening and closing amount of the opening and closing plate 440, the moved handle 450 ) Is fixed to the movement by the friction force.

At this time, the scale portion 453 may be formed on the outer surface of the moving handle 450 to determine the moving amount of the moving handle 450, that is, the opening / closing amount of the combustion air inlet hole 410.

10 is a conceptual perspective view showing a structure for driving the opening and closing plate and the moving handle using the rack and pinion of the present invention, and forms a rack gear 461 at one end of the moving handle 450 as shown in the figure. The pinion gear 463 may be driven by meshing with the rack gear 461, and the pinion gear 463 may be driven by a motor (not shown). At this time, the motor is capable of electronic control, thereby enabling the automatic control of the inflow amount of the combustion air by the opening and closing plate 440.

6, the air supply-exhaust shutoff tube 41 is joined to the burner main body again on the outside of the combustion air supply pipe 70, and the heat exchange engine is disposed on the right side of the air supply-exhaust shutoff tube 41. 80 is joined, and an outer nozzle pipe 81 is provided at the radiant tube side end of the heat exchange engine 80.

An inner heat exchanger fin 82 is located between the heat exchange engine 80 and the combustion air supply pipe 70, and an outer heat exchanger fin 83 is located between the heat exchanger engine 80 and the burner body outer tube.

The gas ejected from the gas nozzle hole 51 is mixed with the air ejected from the inner nozzle pipe 71 and the outer nozzle pipe 81 to be burned to form a flame. As shown in FIG. 4, the outer nozzle pipe 81 ) Is to be enclosed in part to be combusted in the tube (90) disposed forward.

The exhaust gas after combustion is pushed out to the right end of the tube 90 and again hits the right side wall of the outer tube of the burner body 40 and is rotated 180 degrees so that the outer surface of the tube 90 and the inner tube of the burner body 40 are rotated. The inner heat exchanger fins 82 positioned between the heat exchange engine 80 and the burner body 40 outer tube are pushed out between the side surfaces.

The heated inner heat exchanger fin 82 transfers high temperature heat energy to the outer heat exchanger fin 83 and, as a result, preheats the air introduced between the outside of the combustion air supply pipe 70 and the inside of the heat exchanger tube 80. To do it.

The heat exchanger fins 82 and 83 are rotated in the direction of the arrow shown at the end of the tube when the exhaust gas generated inside the tube 90 as shown in FIG. When passing through the fin 83, the heat energy of the exhaust gas is transmitted by conduction to preheat the combustion air flowing along the inner heat exchanger fin 82.

Therefore, the burner of the present invention is to increase the utilization of the waste heat to prevent the waste heat is unnecessarily escape to the outside of the burner, to maximize the thermal efficiency.

In the present invention, the heat energy of the exhaust gas is primarily transmitted from the burner to the supply air for combustion by the heat exchanger fins 83 and 82, and the heat accumulator 11 of the heat accumulator chamber 10 mounted outside is further provided. ) To increase the utilization of waste heat.

Next, a configuration of a heat storage body 10 for accumulating waste heat energy and a switching device for supplying heat energy of exhaust gas stored in the heat storage body to the burner 100 will be described.

4 and 5, the intake and exhaust switching device 30 having the heat storage body 10 is located in the upper end of the burner, and the flange has a horizontal side and the low-temperature side air supply pipe 22 for combustion and the low temperature The side exhaust gas discharge pipe 23 is installed.

Here, the low temperature side air supply pipe 22 for combustion is a supply port through which air is always supplied, and the low temperature side exhaust gas discharge pipe 23 is a pipe through which exhaust gas exiting the burner is always discharged.

In addition, as shown in Figures 4 to 5, a cylindrical low-temperature side communication tube 24 located in the middle of the middle, a pair of low-temperature side lower damper pipe 25 disposed vertically on the lower end of the low-temperature side communication tube 24 and The low temperature side damper portion 21, which is positioned at the center of the low temperature side communication tube 24 and controls the entry and exit of combustion air and exhaust gas, is disposed in a region indicated by a thick one-dot chain line. .

Meanwhile, as illustrated in FIGS. 4 and 5, the heat storage body 10 is integrated at the lower end of the low temperature side damper part 21.

That is, it is formed of the heat accumulator 11 and the casing 12 wrapped therein in communication with the low temperature side lower damper tube 25 and divided into pairs.

In addition, the lower end of the heat storage body 10 is provided with a high temperature side damper portion 31 indicated by a thick dashed line, the configuration is the same as the configuration of the low temperature side damper portion 21.

That is, the high temperature side air supply pipe 32 for combustion and the high temperature side exhaust gas discharge pipe 33 and the cylindrical second communication pipe 34 positioned in the middle are disposed at the lowermost end and have a flange portion. A pair of second damper pipes 35 arranged vertically on the upper end of the second communication pipe 34 are integrated.

In addition, the high temperature side damper portion 31 composed of a rotation valve unit 110 which flows in and out of the exhaust gas and is located at the center of the second communication pipe 34 is organically combined with each other to control the inflow and outflow of air and exhaust gas. will be.

At this time, the configuration of directly controlling the inflow and outflow of the air and the exhaust gas is the rotation valve unit 110 shown in Figs.

11 is a perspective view illustrating main parts of an organic coupling relationship between a communication pipe and a rotation valve part, which are main parts of the present invention.

As shown in the figure, the pivot valve 110 located at the center of the first and second communication pipes 24 and 34 is a valve operated by an air cylinder or a motor (not shown), and is supported by the support shaft 112. It is formed by the wings 113 extending in the direction.

Therefore, the wing 113 operated by the air cylinder in the communication tube (24, 34) is rotated at intervals of 90 degrees to the left and right in accordance with the rotation of the support shaft 112 and the high, low temperature side damper portion (31, 21) It will open and close.

Of course, at this time, the stopper 114 for controlling the linkage is arranged at intervals of 90 degrees as in FIGS. 8, 9, and 10 to assist the operation.

Now, the operation of the heat exchanger built-in compact heat storage burner of the present invention having the above-described configuration will be described in detail.

First, as shown in FIGS. 4 and 5, gas is supplied through the gas inlet pipe 50 of the burner 100, and the burner 100 forms a flame by the ignition spark of the ignition rod 60. .

The flame burns and exhausts the hot exhaust gas, which travels through the tube 90 shown.

Therefore, in the direction of the arrow shown in progress along the outer peripheral surface of the body 40 and the tube 90 of the burner, passing through the heat exchanger fin 82 and the heat exchanger tube 80, which is a heat exchanger, conducts high temperature heat to the combustion air. I will let you.

However, not all of the heat energy of the exhaust gas can be utilized as the heat exchanger.

Therefore, the exhaust gas passing through the heat exchanger and part of the thermal energy released as air preheat passes the high temperature side damper unit 31.

That is, it passes through the high temperature side exhaust gas discharge pipe 33 of the high temperature side damper part 31, passes through the second damper pipe 35, and moves to the pair of heat storage bodies 11 to conduct thermal energy once again.

Of course, as shown in Figure 5, the heat storage member 11 of the present invention is provided in pairs alternately by the operation of the high temperature side damper portion 31, the low temperature side damper portion 21 and the rotation valve unit 110. By accumulating heat, the high temperature heat is transferred to the combustion air supplied into the burner 100.

Next, the high and low temperature side damper parts 31 and 21 and the rotational valve part 110 of the present invention supply combustion air to the burner 100 and use waste heat of exhaust gas as illustrated in FIG. 5. A process of accumulating heat inside the pair of heat storage bodies 11 will be described.

4 and 5, when the combustion air is introduced through the low-temperature side air supply pipe 22 of the present invention passes through the communication tube 24 shown in FIGS.

At this time, the lower plate of the communication tube 24 has a through hole 29 crossed at right angles with the through hole 29 of the upper plate as shown in FIG.

Here, Figure 12 has been given a separate reference to explain these through holes 29 in more detail.

That is, the through-holes 29 shown by solid lines are divided by ⓐ and ⓑ, and the through-holes 29 shown by dotted lines are shown by dividing by ⓒ and ⓓ.

12 is a hole drilled in the upper portion of the communication tube 24 in contact with the low temperature side air supply pipe 22 and ⓑ is a hole drilled in the upper portion of the communication tube 24 in contact with the low temperature side exhaust gas discharge pipe 23.

Therefore, the combustion supply air passing through ⓐ of FIG. 12 is pushed into only ⓒ of FIG. 12 along the section of both blades 113 of the rotation valve unit 110.

Combustion supply air entering into the through hole of ⓒ passes through the right heat storage body 11 of FIG.

Like the low temperature side damper portion 21 described above, the high temperature side damper portion 31 is also provided with intersecting through holes 39 formed of ⓔ, ⓕ, ⓖ, ⓗ.

The ⓔ, ⓕ is a through-hole 39 in contact with the second damper pipe 35 shown in Figs. 4 and 5, ⓖ is a hot side air supply pipe 32, ⓗ is a high temperature side exhaust gas discharge pipe 33 It is a through hole 39.

Therefore, the air passing through the heat accumulator 11 on the right side shown in FIG. 5 is pushed into the communication tube 34 passing through the second damper tube 35 and the through hole ⓔ.

Of course, the air preheated by the regenerated heat is passed through the through hole (39) ⓖ shown by the solid line of Figure 13 through the high temperature side air supply pipe 32 and burned into the burner 100.

Of course, when the flame is emitted inside the burner 100, and the burned exhaust gas is exhausted through the tube 90 as described above, the order of ⓗ, ⓕ, ⓓ, ⓑ is not a through hole to which the above-described air is supplied. To be discharged.

That is, the air supplied into the burner passes through the through-holes ⓐ → ⓒ → ⓔ → ⓖ in sequence and is introduced into the burner 100 to emit a flame, and the high-temperature exhaust gas generated by the flame is ⓗ → Through ⓕ, high temperature heat energy is accumulated in the left heat storage body 11 of FIG. 5 and discharged through the through hole ⓓ → ⓑ.

Subsequently, after a certain time, the rotation valve unit 110 constituted by the high temperature side damper unit 31 and the low temperature side damper unit 21 of the present invention is operated by an air cylinder to form a thin dashed line in FIGS. 12 and 10. It will rotate 90 degrees in the direction shown.

At this time, the four stoppers 114 formed in the communication tube (24, 34) are formed at positions perpendicular to each other for the 90-degree rotation of the wing.

On the other hand, the rotation is to reverse the flow path of the high-temperature exhaust gas emitted from the flame from the burner 100 and the flow path of the air supplied to the burner (100).

Therefore, this time, the air passes through the heat accumulator 11 on the right side and becomes high temperature and is introduced into the burner 100, and the combustion exhaust gas having high temperature passes through the heat accumulator 11 on the left side and accumulates thermal energy.

That is, the heat storage burner 100 of the present invention alternately uses the heat storage body 11 according to the configuration of the high and low temperature side damper parts 31 and 21 and the operation of the rotation valve part 110.

In the present invention as described above, the combustion air introduced through the intake and exhaust switching device is supplied through a flow path between the outside of the combustion air supply pipe and the inside of the heat exchange engine, or the combustion air is injected into the combustion air supply pipe by opening and closing the combustion air splitting supply device. By allowing the air supply ratio to be properly adjusted, it is possible to reduce the peak temperature emitted from the burner to minimize the generation of nitrogen oxides by flameless combustion and to provide a combustion air supply ratio with excellent combustion efficiency. Finned self-regenerative burners have the effect of reducing the NOx while increasing energy efficiency, which contributes to both high efficiency and environmental issues.

In addition, it is made of a single gas can be used in a small space, it is economical because a small system installation cost is generated, there is an effect that can be applied to a heat treatment furnace or a chemical reaction furnace, such as a carburizing furnace.

Claims (3)

An intake / exhaust switch having a heat storage body chamber and a burner body are flange-coupled, and a gas inlet pipe is formed at the center of the burner body, an ignition rod is installed along the longitudinal direction of the gas inlet pipe, and the gas inlet pipe and the ignition rod Combustion air supply pipe is coupled to one side of the burner body so as to surround the combustion, the combustion air supply pipe is coupled to one end of the combustion air supply pipe in a state that can be moved so that the flow pattern of the combustion air supplied into the combustion air supply pipe through the intake and exhaust switching device is adjusted In the self-regenerative single tube burner with built-in heat exchanger fin composed of air split feeder, The combustion air split-supply device is a combustion air supply pipe whose one end is coupled to a burner body so that the gas inlet pipe is wrapped therein, and the combustion air formed to allow the inflow of external air by cutting the upper end of the combustion air supply pipe in an appropriate range. A pair of guide rails formed in parallel in the longitudinal direction of the combustion air supply pipe with an inlet hole, the combustion air inlet hole interposed therebetween, and the left and right sliding movements of the combustion air inlet hole are coupled between the pair of guide rails. Heat exchanger characterized in that it comprises an opening and closing plate to be opened and closed and one end is coupled to one side of the opening and closing, the other end is extended to the outside of the burner body to adjust the movement amount of the opening and closing plate. Combustion air split supply for self-regenerative single tube burners with built-in pins. The method of claim 1, A separate driving means is provided outside the burner body, and the moving handle is interlocked with the driving means so as to move left and right linearly by forward / reverse action of the driving means. Combustion air split supply of burner. The method of claim 2, The driving means is a split air supply of combustion air of a heat exchanger fin built-in self-heating single-tube burner, characterized in that the pinion gear and the rack gear operated by the drive motor.

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