KR20020036353A - premixed burner of having multi-flame - Google Patents

Abstract

By combining and arranging square and circular flame holes in the burner plate at an optimum ratio, it is possible to easily control the load during the design of the burner and to improve the combustion stability. The present invention provides a plurality of rows of Square flame holes are repeatedly drilled in the longitudinal or transverse direction, and a plurality of rows of circular flame holes maintain a predetermined cross-sectional area and mutual gap with respect to the square flame holes in order to increase the stability of the flame. The array is repeatedly drilled.

This prevents flame from rising during high load combustion to ensure high combustion stability, prevents backfire when the amount of combustion changes suddenly, increases the flame safety zone, and reduces the emissions of nitrogen oxides and carbon monoxide to prevent air pollution. As the combustion conditions are changed, the blue and red salts of poly- sulphate are formed on the burner surface or the surface thereof to obtain convective heat or radiant energy selectively. I can alleviate it.

Description

Premixed burner of having multi-flame}

The present invention relates to a multi-flame premixed burner which mixes gas and air in advance in a mixing ratio of a combustion optimum state, and then supplies it to the salt hole surface for combustion.

More specifically, the combination of the rectangular flame hole or the main flame hole and the circular flame hole or the retention flame hole in the burner plate at an optimum ratio facilitates the load in the design of the burner. The present invention relates to a polyflame premixed burner that can be adjusted to improve the combustion stability.

As shown in FIG. 1, the multi-flame premixed burner to which the salt hole according to the present invention is applied includes a mixer inlet 1 through which a mixer in which air and fuel are contacted and mixed is introduced, and a mixer inlet 1. Distributor 2 for imparting a uniform flow rate to the mixer passing through the mixer, a premixing chamber 3 for completely mixing fuel and air so that the mixer can be combusted, and a mixer chamber 3 Spark plug (5) for igniting the mixer flowing out of the flat burner plate (4) via), and square flame hole (or main flame hole) (6) or circular flame hole formed in the flat burner plate (4) to form a flame (Or auxiliary flame hole) 7 is provided.

In this case, the above-described plane burner plate 4 may be deformed into a cylindrical burner plate 4a, and the position where the flame is present is changed by the conditions under which the burner is used, and the flashback is prevented. Of course, a separate mechanism for preventing can be arranged between the burner plate 4 and the mixer chamber 3 described above.

On the other hand, the partial premixed flame or diffusion flame of the prior art has a problem that the length of the flame is long, so that a large amount of nitrogen oxides (NOx) is discharged to more than 100 ppm and the apparatus using such a burner is enlarged.

In addition, in the conventional multi-flame premixed burner, the above-described square or circular flame holes are arranged and drilled on a flat or cylindrical burner plate at regular intervals, so that the injection speed increases and the flame rises during combustion, and the flame stability There is a problem in that the maximum amount of combustion must be limited, and in the case where the flame load area is increased, backfire occurs when the combustion load decreases.

Accordingly, it is an object of the present invention to provide a multi-flame premix burner in which the load per unit area is large and the length of the flame is shortened to make it compact.

Another object of the present invention is to prevent the flame from floating or blowing during high load combustion to ensure high combustion stability, and to prevent the backfire that occurs when the combustion load is reduced or the air fuel ratio is increased to increase the flame safety zone It is to provide a poly flame premixed burner.

It is still another object of the present invention to provide a multi-flame premixed burner in which blue flame and red salt of poly-chloride are formed on the burner surface or its surface to selectively obtain convective heat and radiant energy, respectively, by varying combustion conditions. will be.

It is still another object of the present invention to provide a multi-flame premixed burner that can reduce emissions of nitrogen oxides (NOx) and carbon monoxide (CO) to prevent pollution of the atmospheric environment.

Still another object of the present invention is to provide a multi-flame premixed burner that is easy to follow-up due to the simplified structure and can reduce the cost of the product.

1 is a state of use of the multi-flame premixed burner to which the salt hole according to the present invention is applied,

Figure 2 (a, b) is a view for explaining the shape of the salt hole applied to the burner plate of the multi-flame premix burner according to the present invention,

Figure 3 (a to g) is a partial excerpt of the salt holes are repeatedly punctured in the burner plate of the multi-flame premix burner according to an embodiment of the present invention,

Figure 4 (a to h) is a partial excerpt of the salt holes are repeatedly punctured in the burner plate of the multi-flame premix burner according to another embodiment of the present invention,

Figure 5 (a to i) is a partial excerpt of the salt holes repeatedly arranged in the burner plate of the poly-chloride pre-mix burner according to another embodiment of the present invention,

Figure 6 is an excerpt excerpt of the burner plate of the multi-flame premix burner according to the present invention.

<Description of the code used for the main part of the drawing>

One; Mixer inlet

2; Distribution

3; Mixer room

4; Flat Burner Plate

4a; Cylindrical burner plate

6; Square flame

7; Circular flame

An object of the present invention described above is a multi-flame premixed burner, characterized in that the plurality of rows of square flame holes are repeatedly arranged in a staggered staggered longitudinal or transverse direction to maintain a predetermined cross-sectional area and mutual spacing on the burner plate. By providing.

According to a preferred embodiment, the above-described square salt hole is a pair of opposing first square salt holes repeatedly arranged in the transverse direction, the plurality of rows of second square salt holes are perpendicular to the first square salt holes in the first square salt work. Arranged in the direction.

The object of the present invention described above, a plurality of rows of square flame holes are repeatedly drilled in the longitudinal or transverse direction to maintain a predetermined cross-sectional area and mutual spacing on the burner plate, a plurality of rows between the square flame holes to increase the stability of the flame It is achieved by providing a multi-flame premixed burner, characterized in that the circular flame holes of the rows are repeatedly drilled in the longitudinal or transverse direction while maintaining a predetermined cross-sectional area with respect to the square flame holes.

According to a preferred embodiment, the aforementioned square salt holes are repeatedly drilled in a staggered zigzag shape in the longitudinal direction or the transverse direction, and the circular salt holes are arranged in the square salt holes in the left and right directions and the square salt holes in the vertical direction.

According to a preferred embodiment, the above-described square salt holes are repeatedly drilled in a staggered zigzag shape in the longitudinal or transverse direction, and the circular salt holes are repeatedly drilled in the longitudinal or transverse direction alternately with respect to the square salt holes.

According to a preferred embodiment, the length of the above-mentioned square salt hole is 6 to 19 mm, more preferably 6, 8, 10, 12, 15, 19 mm, and the height of the square salt hole is more preferably 0.5 to 2.0 mm. Is formed of any one of 0.5, 0.8, 1.2, 1.5, 2.0mm, the vertical spacing of the square salt hole is 0.5 to 2.0mm more preferably formed of any one of 0.5, 1.0, 1.2, 1.5, 2.0mm, The horizontal gap is formed by 1/2 of the length of the square flame hole.

In this case, the reason for using 6 to 19 mm square flame holes instead of 0.8 to 2.0 mm diameter round flame holes as the main flame holes in the multi-flame premixed burner is the resonance phenomenon that may occur due to the change in the air and fuel mixture volume. This is because it is possible to perform stable combustion because the effect to prevent the excellent excellent compared to the circular flame hole, thereby to smooth the control of the fan.

In addition, the experimental results show that by using a square flame hole having a height of 0.5 to 2.0 mm, it is possible to obtain a function of expanding a stable combustion range by causing the flame to be backed away by passing heat through the flame hole and extinguishing it. .

In addition, it was confirmed that the vertical spacing of the rectangular salt space described above is 0.5 to 2.0 mm is most preferable, which prevents heat dissipation of the flame caused by excessively large salt space spacing and to avoid excessively high heat generation per unit area caused by the narrow space. For sake.

On the other hand, the length of the square flame hole is determined after determining the load per unit salt by the determination of the square flame hole height, and the distance of the salt space is changed within the range in consideration of the load per unit area and the processing limit in the burner plate determined by the burner design. You can.

According to a preferred embodiment, the diameter of the circular salt holes described above is 0.8 to 2.0 mm, more preferably 0.8, 1.0, 1.2, 1.5, or 2.0 mm, and the interval between the circular salt holes is 0.5 to 2.0 mm. It is formed of any one of 0.5, 1.0, 1.2, 1.5 and 2.0 mm.

According to a preferred embodiment, the distance between the above-described square salt hole and the circular salt hole is 0.5 to 2.0 mm More preferably, it is formed of any one of 0.5, 1.0, 1.2, 1.5, 2.0 mm, the above-described one square salt hole and two rows The mutual spacing between units consisting of circular flame holes is formed in the range of 0.5-25 mm.

The circular flame hole functions as an auxiliary flame hole. If there is no secondary flame hole, if the flow rate of the mixer or the ratio of air and fuel is too high, the flame edge where the flame and the burner plate meet rises from the plate, and stable combustion is impossible. For this reason, if the circular salt holes with a diameter of 0.8 to 2.0 mm smaller than the cross-sectional area of the square salt holes are maintained at 0.5 to 2.0 mm intervals, the velocity of the jets from the circular salt holes is relatively small compared to the speed of the mixer sprayed from the main salt balls. The effect of attaching the flame of the main hole to the burner plate is obtained.

In addition, by the effect of supplying OH radicals from the auxiliary flame holes and heat to the edges of the flames, the effect of rising of flames can be reduced. The diameter of the circular salt hole should be adjusted according to the size of the square salt hole. As a result of the experiment, when using too small or large circular salt hole, the function as the auxiliary salt hole could not be obtained, and 0.8-2.0 mm was found to be most preferable.

In addition, the experimental results showed that the closer the distance between the square and circular flame holes, the wider the stable combustion range (TDR 4: 1), but 0.5mm to 2.0mm was considered to be the most preferable in consideration of workability.

According to a preferred embodiment, the above-described square salt hole and the circular salt hole is a metal plate material, stainless steel material, metal fiber sintered mat, NCA plate material, iron-chromium alloy material plate, iron-chromium alloy metal fiber sintered mat, It is formed on a burner plate formed of any one of the iron-chromium-containing alloy material, wherein the burner plate may be formed of any one of a cylindrical, flat plate, conical and double tube (inward flame) type.

According to a preferred embodiment, the burner described above is burned by any one of household bunsen, industrial bunsen, semi bunsen and premix combustion, and the fuel is selected from LPG, LNG, city gas, hydrogen gas and oil as the fuel of the burner. Whichever is used is used, the burner is formed so that it can be burned while changing the flame into a blue or red salt form.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are intended to be described in detail to be easily carried out by those skilled in the art to which the present invention pertains, and thus the present invention It does not mean that the technical scope of the is limited.

As shown in Figures 1 to 6, the burner according to the present invention is applied to a premixed burner that mixes and combusts gas and air at a mixing ratio of a combustion optimum state in advance, wherein the burner plate is cylindrical, flat, conical , Double tube type, metal plate material, stainless steel material, metal fiber sintered mat, NCA plate material, plate material made of iron-chromium alloy, metal fiber sintered mat made of iron-chromium alloy, iron-chromium The burner plate is formed of any one of the alloying materials contained in the burner design to easily control the load, and to arrange and puncture the combination of square salt holes and circular salt holes in the optimum ratio to improve the combustion stability.

In addition, any one selected from LPG, LNG, city gas, hydrogen gas, and oil is used as the fuel of the above-described burner, and the burner is burned by any one of household bunsen, industrial bunsen, semi bunsen, and premix combustion. Can be.

In addition, when the flame is suitably used in the form of a red flame or a blue flame, convection heat and radiation heat can be used to control operations appropriate to the process.

The salt holes formed in the burner plate shown in FIG. 3 show various modification examples in which the auxiliary salt holes do not function or are relatively weak.

As shown in Fig. 2 (a) and 3 (a), a plurality of square salt holes having a rectangular cross-sectional shape are repeatedly arranged side by side in parallel with the burner plate in a perforated manner. This arrangement of salt holes is the simplest type of repetition and can be used for the purpose of not requiring a high maximum load / lowest load ratio (TDR) because the load can be easily adjusted during processing and design.

At this time, the length (L1) of the square flame hole formed in the burner plate described above may be 6 to 19mm, more preferably 6, 10, 12, 15, 19mm and the like.

The height (L2) of the square flame hole formed in the burner plate described above may be formed in 0.5 to 2mm, more preferably 0.5, 0.8, 1.2, 1.5, 2.0mm and the like.

The vertical spacing h0 between the square flame holes formed in the burner plate described above is 0.5 to 2 mm, and more preferably 0.5, 1.0, 1.2, 1.5, 2.0 mm, or the like.

As shown in Fig. 2 (a) and 3 (b), a plurality of rows of square flame holes are repeatedly arranged in a zigzag shape staggered in the burner plate and punctured.

At this time, the horizontal spacing (l3) of the adjacent square salt holes are formed as (1) x (1/2), and other design conditions are applied along those of the square salt holes shown in FIG.

Such salt hole arrangement is easy to process and can be easily designed to the desired load by adjusting the spacing of the salt space.

As shown in Figure 2 (a) and Figure 3 (c), the arrangement of the salt holes shown in Figure 3 (a, b) is formed by deformation, the design conditions of the salt holes shown in Figure 3 (a) Apply accordingly.

Such salt hole arrangement is similar to that shown in FIG. 3 (b), but the arrangement of salt holes is repeated regularly so that the burner plate can be mass-produced to cut a burner plate having a desired size.

As shown in Fig. 2 (a) and 3 (d), three rows of square salt holes are repeatedly formed in two rows of square salt holes, and the spacing of the salt space is appropriately adjusted according to the load of the burner. The design conditions are applied along that of the salt hole shown in FIG. 3 (a).

As described in 3 (d), the salt hole arrangement can be used by cutting a plate of a desired size by mass-producing burner plates by repeating the arrangement of salt holes regularly.

As shown in Fig. 2 (b) and 3 (e), in order to adjust the load in the design of the burner, the square and holes are arranged side by side alternately, as an example, the cross-sectional shape on the left and right sides of the square flame hole Three rows of circular circular holes are repeatedly arranged and drilled.

At this time, the diameter (d0) of the circular flame hole formed in the burner plate is formed in 0.8 ~ 2mm, more preferably may be formed in 0.8, 1.0, 1.2, 1.5, 2mm and the like.

The distance between the circular salt holes formed in the burner plate described above (l4) is formed in 0.5 ~ 2mm, more preferably may be formed in 0.5, 1.0, 1.2, 1.5, 2.0mm and the like.

The vertical spacing h1 between the circular salt holes and the square salt holes is 0.5 to 2 mm, and more preferably 0.5, 1.0, 1.2, 1.5, 2.0 mm, or the like.

Such salt arrangements can be designed to have a desired load by adjusting the column or row number of the round salt holes, respectively, because the round salt holes are located at both ends of the square salt holes.

2 (b) and 3 (f), one row of circular salt holes are repeatedly arranged on the left and right sides of the square salt holes formed in four rows in parallel to improve the combustion stability of the square salt holes. do.

At this time, the mutual spacing between the units consisting of one row of square dye holes and two rows of circular dye holes is preferably 0.5 to 25 mm, for example, 0.5 to 2.0 mm, and other design conditions are shown in FIG. It is applied according to that of salt balls shown in.

As shown in FIG. 3 (f), the circular salt holes are positioned at both ends of the square salt holes, so that the TDR can be slightly increased, and the load can be changed at the time of designing by adjusting the intervals for each unit. In general, the space between each unit is suitable for use with low load burner and can also be used as a plate for partial premixed burners.

As shown in Fig. 2 (b) and 3 (g), by reducing the distance between the rows of the circular salt space to form a large number of salt holes per unit area, the circular salt holes on the left and right sides of the square flame holes to be increased to increase the combustion load of the burner To form.

At this time, the distance between the circular flame holes (4) are arranged in the same manner so that the combustion stability is constant over the entire surface of the burner plate, and the other design conditions are applied according to those of the salt holes shown in FIG.

Such a salt hole arrangement is similar to that shown in FIG. 3 (e), and circular salt holes are located at both ends of the square salt holes, respectively, so that the TDR can be slightly increased, and it is easy to design a desired load by adjusting the number of rows of the circular salt holes. . However, the difference is that the mutual effect of the salt space is the same by keeping the interval of the circular salt space constant, and thus combustion stability may be somewhat improved.

The salt holes formed in the burner plate shown in FIG. 4 function as part or all of the circular salt holes, and the flame stability is improved by appropriately adjusting the size and mutual spacing of the square salt holes and the circular salt holes at high load. Wider proportional operation is possible up to low loads.

Such salt hole arrangement maintains a constant interval around the square flame hole, and the circular flame hole is located, so that the flame rises by the effect of supplying OH radicals and heat from the auxiliary flame hole to the flame edge at the square flame hole. Reduce the This increases the TDR up to about 3: 1 by maintaining a stable combustion state, and it is easy to control the desired load during design by varying the number of circular salt holes and the arrangement of square salt holes and circular salt holes.

As shown in Fig. 2 (b) and 4 (a), two to five circular salt holes are inserted into two rows of square salt holes and are repeatedly arranged and drilled.

The positions of the circular flame holes drilled in the burner plate are arranged to be located at both ends of the square flame holes or evenly distributed (2-4 equal parts), and other design conditions are applied according to those of the salt holes shown in FIG.

As shown in Figs. 2 (b) and 4 (b), two rows of square salt holes and circular salt holes are repeatedly arranged and drilled in a staggered zigzag shape on the burner plate, and the combustion load on the burner plate is shown in Fig. 4 (a). It becomes more uniform than the salt holes shown in Fig. 4, and other design conditions are applied along those of the salt holes shown in Fig. 4 (a).

As shown in Figs. 2 (b) and 4 (c), two to five circular salt holes are repeatedly arranged in two rows of square salt holes. Other design conditions apply according to those of the salt hole shown in Fig. 4 (a). At this time, the distance between the circular salt holes arranged around the square hole is reduced than that of the salt holes shown in Figure 4 (a).

As shown in FIGS. 2 (b) and 4 (d), the combustion load is more uniform on the burner plate as the square salt holes and the circular salt holes shown in FIG. 4 (c) are repeatedly arranged in a staggered zigzag shape. Done. Other design conditions apply according to those of the salt hole shown in Fig. 4 (c).

As shown in FIGS. 2 (b) and 4 (e), the rectangular and circular salt holes are repeatedly arrayed in two rows and stacked, and other design conditions are according to those of the salt holes shown in FIG. 4 (c). Apply.

As shown in FIGS. 2 (b) and 4 (f), the square and circular salt holes shown in FIG. 4 (e) are repeatedly arranged in a staggered staggered staggered shape, and other design conditions are shown in FIG. 4 (e). Applied according to those of the salt holes shown in).

As shown in Fig. 2 (b) and 4 (g), it is perforated to improve the combustion stability by modifying the salt hole arrangement shown in Fig. 3 (b), 2 to 5 above and below the square salt hole Circular salt holes are formed, and the design conditions of the square salt holes in the same row are applied according to those of the salt holes shown in Fig. 3 (b), and the design criteria between the square salt holes and the circular salt holes are shown in Fig. 4 (c). Apply according to the prepared salt.

As shown in Figure 2 (b) and Figure 4 (h), it is perforated to improve the combustion stability by modifying the salt hole arrangement shown in Figure 3 (c), 2 to 5 on the upper and lower sides of the square salt hole Circular salt holes are formed by repeatedly arranged, the design conditions of the square salt holes in the same row (row) is applied according to those of the salt holes shown in Figure 3 (c), the design criteria between the square salt holes and the circular salt holes is shown in Figure 4 ( Application is made following that of the salt hole shown in c).

The salt holes formed in the burner plate shown in FIG. 5 may add or modify a circular salt hole to enhance the function of the auxiliary salt hole or to easily adjust the load.

Such salt hole arrangement maintains a constant interval around the square flame hole, and the circular flame hole is located, so that the flame rises by the effect of supplying OH radicals and heat from the auxiliary flame hole to the flame edge at the square flame hole. Reduce the However, the difference in comparison with the case in Figure 4 is to have an arrangement for placing the circular flame holes at both ends of the square salt holes or the arrangement of the circular salt holes in the circular salt works.

Accordingly, the function of the auxiliary salt hole is maintained to maintain a stable combustion state, and the TDR is improved to about 4: 1. The number of circular salt holes and the arrangement of the square salt holes and the circular salt holes are varied to facilitate the desired load control during design.

As shown in FIG. 5 (a), the salt hole arrangement shown in FIG. 4 (c) is modified, and two to five circular salt holes are repeatedly arranged between the square salt holes, and the circular salt holes are repeatedly arranged at the left and right sides of the square salt holes. Arrangement in order to improve the combustion stability, it is possible to increase the combustion load per unit area.

The spacing ℓ3 between each unit is maintained at 0.5 to 25 mm, the spacing between the square salt holes and the circular salt holes arranged at the left and right sides thereof is maintained at 0.5 to 1.5 mm, and other design conditions are shown in FIG. It is applied according to the dyeing.

As shown in FIG. 5 (b), the arrangement of the salt holes shown in FIG. 4 (c) is modified, and the square salt holes are arranged by repeatedly inserting two rows of circular salt holes, wherein one row of circular salt holes is the upper and lower square salt holes. And other design conditions are applied according to those of the salt hole shown in Fig. 4 (c).

As shown in FIG. 5 (c), the salt hole arrangement shown in FIG. 5 (b) is modified, and the square salt line is repeatedly arranged by repeatedly inserting three rows of circular salt holes at a predetermined interval (L4). One row is arranged to improve combustion stability of both the upper and lower rectangular flame holes. Other design conditions apply according to those of the salt hole shown in FIG. 5 (b).

As shown in Fig. 5 (d), the arrangement of the salt holes shown in Fig. 4 (c) is modified, and the square salt yarn is repeatedly arranged with two to five circular salt holes in order to improve combustion stability of the circular salt holes. Circular salt constructions are arranged by adding circular salt holes to them. Other design conditions apply according to those of the salt hole shown in Fig. 4 (c).

As shown in Fig. 5 (e), the arrangement of the salt holes shown in Fig. 5 (d) is repeated, and the square salt holes are repeatedly made with two to five circular salt holes to improve the combustion stability of the square salt holes and the circular salt holes. Arrange one row of circular flames between units. Other design conditions are applied according to those of the salt hole shown in Fig. 5 (d).

As shown in FIG. 5 (f), the salt hole arrangement shown in FIG. 5 (e) is modified, and the square salt holes and the circular salt holes shown in FIG. 5 (e) can be secured to ensure a more uniform combustion load. It is arranged repeatedly in staggered zigzag shapes, and other design conditions are applied along those of the salt hole shown in Fig. 5 (e).

As shown in Fig. 5 (g), the arrangement of the salt holes shown in Fig. 5 (a) is modified, in which two to five circular salt holes are arranged in the square salt yarn and one row of circular salt holes on the left and right sides of the square salt holes. It is possible to increase the load per unit area of the burner and to improve the combustion stability of the circular flame holes by arranging the additional circular flame holes in the neighboring circular salt works. Other design conditions apply according to those of the salt hole shown in Fig. 5 (a).

As shown in Fig. 5 (h), the arrangement of the salt holes shown in Fig. 3 (d) is modified, and two to five circular salt holes are arranged in the horizontal salt holes in the transverse direction, and the combustion stability of the square salt holes is improved. The square salted fabric is arranged in one circular salted hole to make it possible. Other design conditions apply according to those of the salt hole shown in Fig. 5 (a).

As shown in FIG. 5 (i), the salt hole arrangement shown in FIG. 4 (c) is modified, and 2 to 5 circular salt holes are arranged in the square salt fiber, and the load of the burner is reduced because the load per unit salt is small. Three rows of circular flames are arranged between the units for easy adjustment. Other design conditions apply according to those of the salt hole shown in Fig. 4 (c).

On the other hand, as shown in Figure 6, when designing the burner plate to prevent a blow-off or blow-off phenomenon of high load flames to arrange a circular auxiliary flame hole for preventing the blow to the burner plate Can be.

That is, the square flame holes are repeatedly arranged in the transverse direction to prevent the flame from rising or extinction of the flame at the high load at the edge of the burner plate, and the distance of the circular flame space is the same so that the combustion stability can be maintained uniformly. Three rows of circular salt holes are arranged in the square salt hole, and two or more rows of circular salt holes are arranged at equal intervals under the square salt holes.

As mentioned above, according to a preferable embodiment, it has the following advantages.

The load per unit area is large and the flame length is shortened, making it compact.

In addition, the flame is prevented from being lifted or blown off during high load combustion to achieve high combustion stability, and high load combustion is realized. You can increase it.

In addition, as the combustion conditions are changed, the blue and red salts of the polychloride salt are formed on the burner surface or the surface thereof, and thus, convective heat and radiant energy can be selectively obtained.

In addition, emissions of nitrogen oxides and carbon monoxide are reduced to prevent pollution of the atmospheric environment.

In addition, it is easy to follow-up management due to the simplified structure and can reduce the cost of the product.

Claims (13)

For polyflame premix burners: A multi-flame premixed burner, characterized in that a plurality of rows of square flame holes are repeatedly arranged in a staggered zigzag shape in the longitudinal or transverse direction to maintain a predetermined cross-sectional area and mutual spacing on the burner plate. The method of claim 1, wherein the square salt holes are a pair of opposing first square salt holes are repeatedly drilled in the transverse direction, a plurality of rows of second square salt holes between the first square salt holes with respect to the first square salt holes. A multi-flame premixed burner characterized in that it is perforated in a perpendicular direction. For polyflame premix burners: A plurality of square salt holes which are repeatedly drilled in the longitudinal direction or the transverse direction to maintain a predetermined cross-sectional area and mutual spacing on the burner plate; And It characterized in that it comprises a plurality of rows of circular flame holes repeatedly arranged in the longitudinal or transverse direction by maintaining a predetermined cross-sectional area and mutual intervals for the square flame holes between the rows of the square flame holes to increase the stability of the flame Flame premixed burners. The method of claim 3, wherein the square salt holes are repeatedly arranged in a staggered zigzag shape in the longitudinal or transverse direction, and the circular salt holes are repeatedly drilled alternately in the longitudinal or transverse direction with respect to the square salt holes. Flame premixed burners. The method of claim 3, wherein the square salt holes are arranged in a zigzag pattern staggered in the longitudinal or transverse direction repeatedly, the circular salt holes are arranged in the square salt holes in the left and right directions and the square salt holes in the vertical direction A polyflame premixed burner characterized by the above-mentioned. The multi-flame premix burner according to claim 1 or 3, wherein the square flame hole has a length of 6 to 19 mm and the square flame hole has a height of 0.5 to 2.0 mm. The multi-flame premix burner according to claim 1 or 2, wherein the vertical spacing of the square flame holes is in a range of 0.5 to 2.0 mm. The multi-flame premix burner according to claim 1 or 3, wherein the horizontal spacing of the square flame holes is formed by 1/2 of the length of the square flame holes. The multi-flame premix burner according to claim 3, wherein the circular flame hole has a diameter ranging from 0.8 mm to 2.0 mm. The multi-flame premix burner according to claim 3, wherein the interval between the circular flame holes is formed in a range of 0.5 to 2.0 mm. 4. The multi-flame premix burner according to claim 3, wherein the spacing between the square flame holes and the circular flame holes is in a range of 0.5 to 2.0 mm. 4. The multi-flame premix burner according to claim 3, wherein the mutual spacing between the units consisting of one row of square flame holes and two rows of circular flame holes is in a range of 0.5 to 25 mm. The multi-flame premix burner according to claim 1 or 3, wherein the burner plate is formed of any one of a cylindrical, flat, conical, and double tube type.