KR102365634B1 - Metal fiber burner for boiler - Google Patents

Abstract

The present invention relates to a metal fiber burner for a boiler, comprising a housing in which water pipes for passing water through are formed on both sides of the inside, and heat pipes for heating by receiving water supplied from the water pipes in the lower part of the housing are formed, the inner upper surface of the housing By fixing and installing a metal fiber burner that protrudes in an upper and lower narrow structure toward the inner side of the housing and has a combustion groove having a width of less than 1/3 of the total width on the bottom surface, the flames ignited from the outside of the metal fiber burner are separated from each other. Stability is improved due to the flame retardant effect between flames ejected in different directions, the amount of flame ignited in the combustion groove is reduced, and the combustion load is reduced due to the increase in the area of the nit. The vortex generation rate is reduced.
According to the present invention, the metal fiber burner protrudes toward the inside of the housing in an upper and lower narrow structure, so that the flame ejection area from which the flame is ejected increases in proportion to the protrusion length, and the flame ignited and ejected from the metal fiber burner avoids the water pipe There is no fear of lowering the flame temperature (for example, heat) because the flame is ejected to the center while As it is reduced, the area of the nit is increased to reduce the combustion load, and the amount of collision between the ignited flames is significantly reduced, thereby preventing the vortex from occurring in the combustion groove.

Description

Metal fiber burner for boiler

The present invention relates to a metal fiber burner for a boiler, and more particularly, the flame ignited by the ignition part is ejected inclined downward toward the wall surface between the water pipes of the housing, the width of less than 1/3 of the total width of the ignition part It relates to a metal fiber burner for a boiler that reduces the amount of flame ignited in a combustion groove having

In general, boilers are installed in various buildings such as homes, offices, or other factories to supply hot water and heating water through heat exchange with a heat source generated by burning a mixed fuel of air and gas.

To this end, the boiler receives and mixes air and gas from the outside, and then a fuel supply that supplies the mixed fuel to the burner, and a fuel supply that receives the mixed fuel from the fuel supply and burns it by an ignition device to generate a flame. It includes a heat exchanger that heats the heating return to the heating water by allowing the burner and the heating return water to exchange heat with the heat source supplied from the burner.

In particular, in recent years, there are many condensing heat exchangers equipped with a sensible heat exchanger in which heating return water exchanges primary heat with sensible heat generated by the burner, and a latent heat exchanger in which heating return water exchanges secondary heat with combustion gas that has completed heat exchange in the sensible heat exchanger. A boiler having such a condensing heat exchanger is called a condensing boiler.

In addition, heating and hot water boilers used at home can be divided into oil boilers and gas boilers according to the fuel used.

Patent Literature 1 shows a conventional heat exchanger. Referring to this, a water pipe installed opposite to each other on both sides of the inside to circulate water, and a water pipe connected to the water pipe at the inner lower part to pass water through the water pipe, heat exchange It consists of a sensible heat exchanger that forms a tube that heats water by action, and a burner that is installed inside the sensible heat exchanger and sprays a flame in the direction of the water pipe.

Here, the burner is supplied with the mixed gas through the blower, and is ignited to ignite the flame in the burner, thereby heating the tube.

At this time, this burner is a flat burner, and the flame is ejected evenly over the entire bottom surface, and the flame proportional to the total area is ejected directly below.

And, the tube heated by the flame heats the water by heat exchange action while circulating water therein, and then discharges it to the outside.

However, in Patent Document 1 as described above, there is a change in the amount of flame ejected in proportion to the area of the burner, and the area of the burner is widened to increase the amount of ejection, thereby increasing the volume of the sensible heat exchanger. there is.

Thus, in order to solve this problem, the burner was improved as in Patent Document 2, and referring to this, a burner housing in which an accommodating part is formed inside, and an open part is formed on the bottom surface of the accommodating part, and the accommodating part of the burner housing It is seated and is composed of a metal fiber exposed to the lower part of the opening, and a slit plate in close contact with the upper part of the metal fiber to fix the metal fiber in close contact with the accommodating part.

Here, the metal fiber and the slit plate are curved in an arcuate shape, and accordingly, the mixed gas passed through the slit groove of the slit plate and discharged to the metal fiber is burned and generated as a flame.

That is, the flame ignited on the surface of the metal fiber stays on the surface of the metal fiber and is ejected to the outside through the opening.

At this time, while the flame ejected from the surface of the metal fiber is ejected radially toward the combustion chamber space of the boiler to correspond to the shape of the surface of the metal fiber, the pipe through which the heating water passes is heated.

However, in Patent Document 2 as described above, as the flame is ejected radially from the surface of the metal fiber, the metal fiber is formed in a curved plate shape to increase the amount of ejection of the flame. By forming the combustion chamber in proportion to the area of heat) is rapidly reduced, and the combustion performance of the mixed gas in the combustion chamber is lowered due to the lowering of the flame temperature, causing incomplete combustion and increasing the amount of carbon monoxide (CO) generated.

In addition, when only the amount of flame is increased without increasing the area, the stability of the flame is reduced as the combustion load is increased, and a lift phenomenon occurs at the same time as this stability is lowered, so that the flame is easily blown or incomplete combustion proceeds, and the surface shape is affected. In a three-dimensional shape that gives resistance, if stability is achieved by contact between flames, the flames will contact excessively, resulting in incomplete combustion.

In addition, there is a problem in that the heating time of the heating water pipe is delayed, so that the heating performance is deteriorated, and the water flowing into the tube is discharged without being heated to a predetermined temperature, so that the heating and hot water performance is deteriorated.

KR 10-2018-0007933 A KR 10-0528242 B1

The present invention is to solve the above-described problems, and an object of the present invention is to protrude from the inner upper surface of the housing in the upper and lower narrow structure toward the inner direction of the housing, and combustion having a width of less than 1/3 of the total width on the bottom surface By fixing and installing the ignition part having the groove, the stability is improved by the flame retardant effect between flames in different directions, but the vortex generation rate due to the collision between the flames in the combustion groove is reduced, and the flame is proportional to the protrusion length of the metal fiber burner. To provide a metal fiber burner for boilers in which the area of the ejected flame is increased and the combustion part is reduced, but the flame ejected from the ignition part is ejected in the direction of the inner wall surface between the water pipes of the housing to prevent the flame from contacting the water pipes will be.

In order to achieve the object of the present invention as described above, the metal fiber burner for a boiler according to the present invention is fixedly installed on the inner upper surface of the housing and extends to correspond to the longitudinal direction of the water pipe installed in the housing, the inner direction of the housing It is characterized in that it includes an ignition unit in which a combustion groove is formed to protrude toward the upper and lower narrow structure, and to have a width of less than 1/3 of the total width from one end to the other end in the center of the bottom surface.

In the metal fiber burner for a boiler according to the present invention, the ignition unit includes: a frame having a plate-like rim fixed to the inner upper surface of the housing, and having a through hole formed in the longitudinal direction along the longitudinal direction of the central portion; a mesh network fixed in close contact with the periphery of the through-hole of the frame and formed to protrude in an upper-gwang-lower narrow structure so that the central portion thereof is depressed; It is characterized in that it is composed of; a knit that is laminated and closely adhered to the bottom surface of the mesh network to form the combustion groove in the center of the bottom surface.

In the metal fiber burner for a boiler according to the present invention, the knit includes: a bent surface portion formed to be bent in the direction of the edge of the through hole and laminated to the mesh network; It characterized in that it is composed of; is formed to be inclined at a predetermined angle to connect between the bent surface portion and the combustion groove to eject a flame into the housing; characterized in that it is composed of.

In the metal fiber burner for a boiler according to the present invention, the inclined surface portion ejects the flame inclined downward toward the inner wall surface between the water pipes of the housing.

In the metal fiber burner for a boiler according to the present invention, the knitted portion forms a knit boundary line at a midpoint of the height between the bent surface portion and the upper end of the inclined surface portion, and the lower inclined surface portion through which the flame is discharged based on the knit boundary line. It is characterized in that the area is formed to be relatively wider than the area of the upper inclined surface through which the flame is discharged.

In the metal fiber burner for a boiler according to the present invention, the knit is characterized in that the bottom surface height of the combustion groove is formed at a position relatively lower than the knit boundary line.

In a metal fiber burner for a boiler according to the present invention, there is provided a metal fiber burner comprising: a frame having a plate shape and having a through hole formed in a longitudinal direction along the longitudinal direction of the central portion thereof; a mesh network fixed in close contact with the periphery of the through-hole of the frame and formed to protrude downward in an upper-gwang-lower narrow structure so that the central portion thereof is depressed; A knit boundary line is formed at the midpoint of the height between the upper end of the bent surface part stacked and closely adhered to the bottom edge of the mesh and the inclined surface part extending downward in a downwardly inclined structure in the upper-gwang-low gorge structure from the bent surface part, and from one end to the other end in the center of the bottom surface. A nit formed to have a width of less than 1/3 of the total width of the nit, in which the height of the depression groove is relatively lower than the height of the knit boundary line; do.

In the metal fiber burner for a boiler according to the present invention, in the knit, the area of the lower inclined surface through which the flame is discharged based on the knit boundary line is relatively wider than the area of the upper inclined surface through which the flame is discharged. do.

In the metal fiber burner for a boiler according to the present invention, the combustion groove comprises: a flat portion formed on an inner upper surface in a longitudinal direction to eject a flame in a direct downward direction; It is characterized in that it further forms; an inner inclined surface extending downwardly from the edge of the flat part to the upper and lower light structure and ejecting a flame in a direction inclined toward the central part of the combustion groove.

According to the present invention, the ignition part protrudes in the upper and lower narrow structure toward the inner direction of the housing, the flame ejection area from which the flame is ejected is increased in proportion to the protrusion length, and the flame ejected from the ignition part is reduced as the combustion load is reduced. It is ejected in the direction of the inner wall between the water pipes to prevent the flame from coming into contact with the water pipe. In particular, the area of the combustion groove is formed to be less than 1/3 of the total area of the ignition section, so the amount of flame ignited in the combustion groove is reduced. The stability is improved by the flame retardant effect between the flames in different directions, the amount of collision between the ignited flames is significantly reduced, and the vortex is prevented from being generated in the combustion groove. The amount of flames that are sprayed directly downward in the assembled state to reach the heat transfer tube increases, and accordingly, the reliability of the product is improved.

In addition, by guiding the flame in the direction of the combustion groove, the thermal efficiency is increased, and by preventing the heating of the surrounding attachments, it is possible to prevent incomplete combustion due to the temperature difference with the flame. By continuously bending it, it increases the surface area and at the same time reduces the width and width of the ignition part, so that the combustion performance is improved.

1 is a perspective view showing a metal fiber burner for a boiler according to the present invention;
Fig. 2 is a perspective view of coupling a metal fiber burner according to the present invention to an upper portion of a housing;
3 is an exploded perspective view of a metal fiber burner according to the present invention;
4 is a side cross-sectional view of a metal fiber burner according to the present invention.
5 is a side cross-sectional view showing a state in which the metal fiber according to the present invention is coupled to the housing.

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

1 to 5 , the metal fiber burner according to the present invention includes an ignition unit 200 .

The ignition unit 200 is fixedly installed on the inner upper surface of the housing 100 , and extends to correspond to the longitudinal direction of the water pipe 101 installed in the housing 100 , and has an upper and lower narrow structure toward the inner direction of the housing 100 . The combustion groove 203a is formed to protrude, and the combustion groove 203a recessed to have a width L1 less than 1/3 of the total width L from one end to the other end is formed in the center of the bottom surface.

The ignition unit 200 uniformly disperses the mixed gas flowing into the housing 100 through the open upper part of the housing 100 .

The ignition unit 200 disperses the mixed gas to spread out radially.

The combustion groove 203a has improved stability due to the flame retardant effect between the flames ejected in different directions, and the flames ejected from the inner space collide with each other to prevent the generation of a vortex. It is formed with an area less than 1/3 of its width.

The combustion groove (203a) is formed along the longitudinal direction on the inner upper surface of the flat portion (203a-1) for ejecting a flame directly downward, and extends from the edge of the flat portion (203a-1) to the downwardly inclined downward light structure. It is formed to further form an inner inclined surface (203a-2) for ejecting a flame in a direction inclined toward the central portion of the combustion groove (203a).

The flat portion 203a - 1 ejects a flame directly downward so that the flame is transmitted to the heat transfer tube 102 of the housing 100 .

The flat portion 203a - 1 is mixed with the flame ejected from the inner inclined surface 203a - 2 and ejected toward the heat transfer tube 102 .

The inner inclined surface 203a - 2 ejects a flame in a direction perpendicular to the surface, and is mixed with the flame ejected directly downward from the flat portion 203a - 1 .

The inner inclined surface 203a - 2 is mixed with the flame ejected directly downward from the flat portion 203a - 1 to increase the amount of flame ejected from the combustion groove 203a toward the heat transfer tube 102 . .

The ignition unit 200 includes a frame 201 having a plate shape, an edge fixed to the inner upper surface of the housing 100, and having a through hole 201a formed in a longitudinal direction along the longitudinal direction of the central portion thereof; The mesh network 202 and the mesh network 202 formed to protrude in the upper and lower narrow structure and to be recessed in the central part of the frame 201 and the mesh network 202 are stacked and closely adhered to the lower surface of the frame 201 in close contact with the periphery of the through hole 201a It is composed of the knit 203 in which the combustion groove 203a is formed.

The frame 201 covers and covers the upper edge of the opened upper surface of the housing 100 .

The through hole 201a of the frame 201 communicates with the opened upper part of the housing 100 to allow the mixed gas to flow into the housing 100 .

The mesh network 202 is formed to be proportional to the diameter of the through-hole 201a of the frame 201 or relatively larger than the diameter of the through-hole 201a to cover the through-hole 201a.

The mesh network 202 uniformly disperses the mixed gas into the inner space of the housing 100 .

The knit 203 is formed to be proportional to the diameter of the mesh network 202 , and covers the mesh network 202 .

The knit 203 is preferably a metal fiber that induces a mixed gas to be ignited on its surface to generate a flame.

The knit 203 is formed to correspond to the shape of the mesh network 202 so that the flame stays on the surface while ejecting the flame.

The knit 203 is formed by bending in the direction of the edge of the through hole 201a to be laminated and closely adhered to the mesh network 202, and between the bent surface portion 203b and the bent surface portion 203b and the combustion groove 203a. It is formed to be inclined at a predetermined angle to connect, and is composed of an inclined surface portion 203c that ejects a flame into the housing 100 .

The bent surface portion 203b is closely fixed to the mesh network 202 to keep the knit 203 stacked and fixed to the mesh network 202 .

The bent surface portion 203b is bent at least twice or more and is fixedly attached to the edge of the mesh network 202 .

The angle of the inclined surface portion 203c is preferably formed within 30 to 60 degrees to eject the flame.

The inclined surface portion 203c ejects a flame inclined downward toward the inner wall surface between the water pipes 101 of the housing 100 to prevent the flame from directly contacting the water pipe 101 .

The flame ejection area of the ignition unit 200 from which the flame is ejected is increased in proportion to the length of the inclined surface portion 203c.

The knit 203 forms a knit boundary line (H) at the midpoint of the height between the bent surface portion 203b and the upper end of the inclined surface portion 203c, and the lower portion where the flame is ejected based on the knit boundary line (H). The area of the inclined surface portion 203c is relatively larger than the area of the upper inclined surface portion 203c through which the flame is discharged.

The sum of the area of the lower inclined surface portion 203c from which the flame is ejected and the area of the combustion groove 203a based on the knit boundary line H is relatively larger than the sum of the area of the lower inclined surface portion 203c from which the flame is ejected. formed large.

The bent surface portion 203b is fixed in close contact with the edge of the mesh network 202 to block the flame from being ejected.

The knit 203 is formed at a position where the height of the bottom surface of the combustion groove 203a is relatively lower than the knit boundary line H, and the frame 201 or the housing ( 100) Heat transfer to the upper surface is prevented.

The housing 100, in which the ignition unit 200 is installed, has a hollow shape with an open top, and is formed symmetrically on both sides of the inside to form a water pipe 101 through which water passes from one end to the other end. , to form a heat transfer tube 102 that communicates with the water pipe 101 at the lower inner side to receive water, and heats the water passing through the inside through a heat exchange action.

Hereinafter, when the housing 100 in which the ignition unit 200 is installed will be described in detail, the housing 100 is installed inside a boiler (not shown), and the water pipe 101 and the heat transfer pipe 102 . By heating the water circulated through it, heating and hot water are supplied.

The housing 100 receives the mixed gas into the inner space through the open upper part.

The water pipe 101 is formed in plurality from the upper part to the lower part spaced apart from each other at a predetermined interval to circulate water and prevent the housing 100 from being heated to a predetermined temperature or more.

The water pipe 101 is cooled while changing the water to a medium temperature by heat exchange with water, and the water changed to the medium temperature is supplied to the heat transfer pipe 102 .

The heat transfer tube 102 is directly heated by a flame that is ejected from the ignition unit 200 and comes in contact with the outer surface to rise to a predetermined temperature.

The heat transfer tube 102 heats water through a heat exchange action while circulating water therein, and discharges hot water.

The heat transfer tube 102 is preferably formed in an elliptical shape from top to bottom.

The heat transfer tube 102 is formed in plurality to be spaced apart from each other by a predetermined interval in the series direction.

One end of the housing 100 is exposed to the outside, and the other end is located below the ignition unit 200 to form a spark plug S for igniting the mixed gas dispersed in the ignition unit 200 .

The spark plug (S) receives power through one end, and ignites the mixed gas by causing a spark to occur at the other end.

The other end of the spark plug S is formed to be spaced apart from the ignition unit 200 by a predetermined distance.

The metal fiber burner for a boiler according to the present invention configured as described above is used as follows.

First, the mesh network 202 is closely fixed along the edge of the frame 201 in which the through hole 201a is formed, and the through hole 201a is covered with the mesh network 202 .

At this time, the mesh network 202 is formed to protrude in an upper and lower narrow structure toward the inner direction of the housing 100, and its bottom surface is depressed upwardly and is positioned in the inner direction of the housing 100, and its rim is the frame. It is closely fixed to the edge of 201 by welding (eg, spot welding).

Then, by laminating and adhering the knit 203 to the bottom surface of the mesh network 202 , and covering the mesh network 202 with the knit 203 , the knit 203 corresponds to the shape of the mesh network 202 . It is formed in a narrow structure, and a combustion groove 203a is formed along the longitudinal direction of the central portion of the bottom thereof.

Here, the combustion groove 203a forms a flat portion 203a-1 formed to have a predetermined length to correspond to the longitudinal direction of the water pipe 101 of the housing 100 on the inner upper surface thereof, and the flat portion 203a -1) An inner inclined surface 203a-2 extending from the edge to a downwardly inclined light structure is formed.

That is, by closely fixing the mesh network 202 to the frame 201 as described above, and laminating and fixing the knit 203 to the mesh network 202 , the ignition unit 200 is formed.

At this time, the width L1 of the combustion groove 203a of the knit 203 is formed to be less than 1/3 of the width L1 from one end to the other end of the knit 203. , The stability is improved due to the flame retardant effect between the flames ejected in different directions, and the flames ejected from the combustion grooves 203a collide with each other to prevent the vortex from occurring in the combustion grooves 203a.

In addition, the combustion groove 203a of the knit 203 is located below the knit boundary line H, and is spaced apart from the frame by a predetermined distance, so that the heat of the flame ignited in the combustion groove 203a is generated in the frame ( 201) is prevented.

Thereafter, the ignition unit 200 formed as described above is closely attached to the open upper edge of the housing 100 and fixed by welding, so that the metal fiber fiber 200 is positioned in the inner space of the housing 100 . make it possible

Then, when water is circulated through the water pipe 101 of the housing 100 and the mixed gas is supplied into the housing 100 through the open upper part of the housing 100, the mixed gas is generated in the ignition unit It is ejected into the housing 100 through 200 , and at this time, a spark is generated by the spark plug S installed in the housing 100 so that the flame is ignited in the ignition unit 200 .

At this time, the mixed gas ejected through the nit 203 of the ignition unit 200 ignites by the spark generated from the spark plug S to generate a flame, and this flame is burned on the nit 203 surface and At the same time, it is ejected into the housing 100 .

Here, the flame burned on the surface of the nit 203 continuously burns the mixed gas so that the mixed gas flowing into the housing 100 is ignited as a flame and then ejected into the inner space of the housing 100 .

Then, the mixed gas introduced through the open upper part of the housing 100 moves to the mesh network 202 through the through hole 201a of the frame 201, and then in the mesh network 202 By evenly dispersing the mixed gas and moving it to the nit 203 , the flame is evenly burned over the entire area of the nit 203 .

In addition, based on the knit boundary line (H) formed at the mid-point of the height between the bent surface portion 203b of the knit 203 and the upper end of the inclined surface portion 203c, the area of the lower inclined surface portion 203c where the flame is ejected and combustion The sum of the areas of the grooves 203a is formed to be relatively larger than the sum of the areas of the lower inclined surface portion 203c from which the flame is ejected, so that the combustion load is reduced as the area of the knit 203 is increased, and the inclined surface portion The amount of flame ejected in the direction of the inner wall of the housing 100 through 203c is relatively lower than that of the flame ejected in the direction of the heat transfer tube 102 of the housing 100, and accordingly, the housing 100 The inner wall surface of the unit is prevented from being heated by the flame.

In particular, the flame ejected in the direction of the inner wall surface of the housing 100 through the inclined surface portion 203c avoids the water pipe 101 of the housing 100 and is ejected between the water pipes 101, so that the ignition The flame ejected from the unit 200 is prevented from coming into contact with the water pipe 101 to reduce the temperature, so that the temperature of the flame ejected in the direction of the heat transfer tube 102 can be increased, and at the same time, the water pipe 101 By reducing the amount of the flame in contact with, the local heating of the water pipe 101 is prevented, and incomplete combustion generated while the flame comes into contact with the water pipe 101 at a relatively low temperature is prevented.

In addition, the combustion groove 203a of the knit 203 is formed at a position relatively lower than the knit boundary line H, and the frame 201 or the housing 100 is ignited by the flame ignited in the combustion groove 203a. By preventing the transfer of heat to the upper surface portion, the temperature in the housing 100 is prevented from rapidly increasing.

Here, in the flame ejected directly downward from the flat portion 203a-1 of the combustion groove 203a in the direction of the heat transfer tube 102, the central portion of the combustion groove 203a from the inner inclined surface 203a-2 Flames ejected obliquely toward are mixed, and the amount of flame ejected from the combustion grooves 203a is increased.

At this time, the flame collected in the central portion of the combustion groove 203a is ejected directly downward toward the heat pipe 102 to heat the heat pipe 102 .

Thereafter, the flame ejected from the ignition unit 200 heats the heat pipe 102 while in direct contact with the heat pipe 102 installed in the housing 100, and accordingly, the water flowing into the heat pipe 102 flows through the It is heated to a predetermined temperature by a heat exchange action with the heat transfer tube 102 .

And, the hot water heated in the heat transfer tube 102 is discharged to the outside to proceed with heating or to be supplied as hot water.

A combustion groove 203a having a width L1 of less than 1/3 of the total width L of the ignition unit 200 on the bottom surface of the ignition unit 200 is formed to protrude in the upper and lower narrow structure as described above. In the structure in which is formed, the width of the combustion groove 203a is formed to be less than 1/3 of the total width (L) of the ignition unit 200, and stability due to the flame retardant effect between flames ejected in different directions is formed. , as the ejection amount of the flame ignited in the combustion groove 203a is reduced, the amount of collision between the ignited flames is significantly reduced to prevent the vortex from being generated in the combustion groove 203a, and the ignition unit toward the inner direction of the housing 100 (200) protrudes in the upper and lower narrow structure, the flame ejection area from which the flame is ejected is increased in proportion to the protrusion length, and the thermal efficiency is increased by intensively guiding the flame in the direction of the combustion groove (203a), and peripheral attachments (for example, , by preventing the heating of the water pipe 101 and the housing 100), incomplete combustion due to the temperature difference with the flame can be prevented, and accordingly, the combustion load is reduced due to the increase of the surface area of the ignition unit 200 It is possible to improve combustion performance.

The metal fiber burner for a boiler according to the present invention described above is not limited to the above-described embodiment, and those of ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the following claims It has the technical spirit to the extent that anyone can change and implement it in various ways.

100: housing 101: water pipe
102: heat pipe 200: metal fiber burner
201: frame 201a: through hole
202: mesh network 203: knit
203a: combustion groove 203a-1: flat part
203a-2: inner inclined surface 203b: bent surface part
203c: slope part H: knit boundary line
L: overall width L1: wide
S : spark plug

Claims (9)

It is fixedly installed on the inner upper surface of the housing 100, and extends to correspond to the longitudinal direction of the water pipe 101 installed in the housing 100, and is formed to protrude in an upper and lower narrow structure toward the inner direction of the housing 100, and the bottom center part Including an ignition unit 200 having a combustion groove 203a that is recessed to have a width L1 of less than 1/3 of the total width L from one end to the other end, and formed a combustion groove 203a for concentrating the flame in the center. Metal fiber burner for boilers, characterized in that The method of claim 1,
The ignition unit 200,
a frame 201 having a plate-like edge fixed to the inner upper surface of the housing 100 and having a through hole 201a formed in the longitudinal direction along the longitudinal direction of the central portion;
a mesh network 202 fixed in close contact with the periphery of the through-hole 201a of the frame 201 and formed to protrude in an upper-gwang-lower narrow structure so that the central portion thereof is depressed;
a knit 203 stacked on the bottom of the mesh network 202 to form the combustion groove 203a in the center of the bottom;
A metal fiber burner for a boiler, characterized in that it consists of. 3. The method of claim 2,
The knit 203 is
a bent surface portion 203b formed to be bent in the direction of the edge of the through hole 201a and laminated to the mesh network 202;
an inclined surface portion (203c) formed to be inclined at a predetermined angle to connect the bent surface portion (203b) and the combustion groove (203a) to eject a flame into the housing (100);
A metal fiber burner for a boiler, characterized in that it consists of. 4. The method of claim 3,
The inclined surface portion 203c,
A metal fiber burner for a boiler, characterized in that the flame is ejected inclined downward toward the inner wall surface between the water pipes (101) of the housing (100). 4. The method of claim 3,
The knit 203 is
A knit boundary line (H) is formed at the mid-point of the height between the bent surface portion (203b) and the upper end of the inclined surface portion (203c), and the area of the lower inclined surface portion (203c) through which the flame is discharged based on the knit boundary line (H) A metal fiber burner for a boiler, characterized in that it is formed relatively wider than the area of the upper inclined surface portion (203c) through which the flame is discharged. 6. The method of claim 5,
The knit 203 is
A metal fiber burner for a boiler, characterized in that the bottom surface of the combustion groove (203a) is formed at a position relatively lower than the knit boundary line (H). a frame 201 in which a through hole 201a is formed in the longitudinal direction of the central portion in a plate shape in the longitudinal direction;
a mesh network 202 fixed in close contact with the periphery of the through hole 201a of the frame 201 and formed to protrude downward in an upper-gwang-low-narrow structure so that the central portion thereof is depressed;
Knit at the midpoint of the height between the top of the bent surface portion 203b stacked and closely adhered to the bottom edge of the mesh network 202 and the inclined surface portion 203c that extends downward in an upper-gwang-lower narrow structure from the bent surface portion 203b to the bottom. The boundary line (H) is formed, and is recessed to have a width (L1) of less than 1/3 of the total width (L) from one end to the other end in the center of the bottom surface, but relatively higher than the height of the knit boundary line (H) It is formed in a lower position, the nit 203 to form a combustion groove (203a) for concentrating the flame to the center;
A metal fiber burner for a boiler, characterized in that it includes an ignition unit 200 composed of 8. The method of claim 7,
The knit 203 is
A metal fiber burner for a boiler, characterized in that, based on the knit boundary line (H), the area of the lower inclined surface portion (203c) from which the flame is discharged is relatively wider than the area of the upper inclined surface portion (203c) from which the flame is discharged. 8. The method of claim 1 or 7,
The combustion groove (203a) is,
a flat portion (203a-1) formed along the longitudinal direction on the inner upper surface to eject a flame in a direct downward direction;
an inner inclined surface (203a-2) extending downward from the edge of the flat part (203a-1) in a downward light structure to eject a flame in a direction inclined toward the center of the combustion groove (203a);
A metal fiber burner for a boiler, characterized in that it further forms.

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