KR101504451B1 - Gas burner for low NOx - Google Patents

Gas burner for low NOx Download PDF

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Publication number
KR101504451B1
KR101504451B1 KR20140014744A KR20140014744A KR101504451B1 KR 101504451 B1 KR101504451 B1 KR 101504451B1 KR 20140014744 A KR20140014744 A KR 20140014744A KR 20140014744 A KR20140014744 A KR 20140014744A KR 101504451 B1 KR101504451 B1 KR 101504451B1
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KR
South Korea
Prior art keywords
air
gas
burner
injection nozzle
nozzle
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Application number
KR20140014744A
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Korean (ko)
Inventor
최영환
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최영환
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Priority to KR20140014744A priority Critical patent/KR101504451B1/en
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Publication of KR101504451B1 publication Critical patent/KR101504451B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration

Abstract

The present invention relates to a nitrogen oxide reduction type gas burner, and more particularly, to a nitrogen oxide reduction type gas burner in which combustion is completed rapidly before nitrogen oxides are generated using a mixing method in which air and fuel gas collide with each other.
The present invention also relates to a nitrogen oxide-reduced gas burner that is not affected by installation conditions of a combustion chamber or a burner by providing both a nitrogen oxide reduction technique using an excess air region and an excess fuel region in one burner.
The present invention also relates to a nitrogen oxide-reduced gas burner capable of providing a stable flame while reducing nitrogen oxides by providing both primary air supply, secondary air supply and tertiary air supply for different purposes.

Description

[0001] The present invention relates to a gas burner for low NOx,

The present invention relates to a nitrogen oxide reduction type gas burner, and more particularly, to a nitrogen oxide reduction type gas burner in which combustion is completed rapidly before nitrogen oxides are generated using a mixing method in which air and fuel gas collide .

The present invention also relates to a nitrogen oxide-reduced gas burner that is not affected by installation conditions of a combustion chamber or a burner by providing both a nitrogen oxide reduction technique using an excess air region and an excess fuel region in one burner.

The present invention also relates to a nitrogen oxide-reduced gas burner capable of providing a stable flame while reducing nitrogen oxides by providing both primary air supply, secondary air supply and tertiary air supply for different purposes.

Nitrogen oxides generated during the combustion process of boilers are subject to various environmental pollution including photochemical smog, and their emissions are strictly regulated around the world. Therefore, the reduction of nitrogen oxides is becoming an important factor that determines the performance of the burner.

Thus, in order to reduce the 'thermal NOx' generated by the reaction of nitrogen contained in the combustion air with excess oxygen in a high temperature combustion atmosphere, it is necessary to maintain the excess fuel-air shortage state in the high temperature combustion zone, Inhibit the reaction.

Incidentally, the incomplete combustion products generated when the air is deficient for suppressing the generation of nitrogen oxides are mainly used by supplying sufficient combustion air from the downstream side in a relatively low temperature in the furnace, thereby completely burning the combustion products.

That is, in the front portion of the burner, a relatively low-temperature combustion atmosphere is formed to maintain the fuel-excess-air shortage state when the primary combustion air is supplied so as to suppress the generation of nitrogen oxides, Supply combustion air.

For this purpose, as shown in FIG. 1A and FIG. 1B, in Registration Practical Utility Model No. 20-0213935, a fuel nozzle 24 is provided at the center of the burner 22, and an annular primary air nozzle 26, and a plurality of secondary air nozzles 27 are provided on the outer circumference concentric circles of the primary air nozzles 26.

However, although the above-described conventional techniques reduce the generation of nitrogen oxides by forming an excess fuel-air environment, there is a limit to the air shortage, and the reduction of nitrogen oxides also faces the limit.

In addition, even before reaching the air shortage of the limit value, the composition environment changes depending on the combustion chamber pressure and the burner installation conditions, so that it is practically difficult to maximize the nitrogen oxide reduction effect.

In addition, as a countermeasure for efforts to reduce nitrogen oxides, there has been a problem of hindering the stable combustion of the hybridized fuel or lowering the fuel efficiency.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a nitrogen oxide reduction gas burner in which combustion is completed rapidly before nitrogen oxides are generated using a mixing method in which air and fuel gas collide.

It is another object of the present invention to provide a nitrogen oxide reduction type gas burner that is not affected by installation conditions of a combustion chamber or a burner by providing both a nitrogen oxide reduction technique using an excess air region and an excess fuel region in one burner.

It is another object of the present invention to provide a nitrogen oxide-reduced gas burner capable of simultaneously providing a primary air supply, a secondary air supply, and a tertiary air supply for different purposes, thereby reducing nitrogen oxides and providing a stable flame .

To this end, the nitrogen oxide reduction type gas burner according to the present invention includes: a tubular burner body having an air supply path formed therein; A gas injection nozzle installed inside the burner body and injecting a fuel gas toward an inner circumferential surface of the burner body; A booster plate coupled to a rear side of the gas injection nozzle and having a cross sectional area relatively smaller than an air supply passage of the burner body; A first air ejection hole formed by a gap between an inner circumferential surface of the burner body and an outer circumferential surface of the securing plate to cause air to be mixed with the fuel gas injected from the gas injection nozzle while being collided; A fuel supply pipe for supplying a fuel gas to the gas injection nozzle; An ignition device for igniting a mixed fuel in which fuel gas injected from the gas injection nozzle and air injected from the first air injection hole are mixed; And a flame spraying guide coupled to the front end of the burner body for guiding the ejection of the flame ignited by the ignition device.

At this time, it is preferable that the gas injection nozzle has a plurality of injection nozzle portions extending radially with respect to the center portion.

The plurality of spray nozzles are classified into an oxidizing region nozzle unit for supplying air excessively and a reducing region nozzle unit for supplying fuel gas in an excess amount. The portion of the first air discharging hole, As shown in Fig.

In addition, it is preferable that the radially extending oxidation region nozzle portion and the reduction region nozzle portion are alternately arranged.

In addition, it is preferable that a cut-out portion is formed at an end portion of the reduction region nozzle portion so that a gas supply path formed therein is exposed for a predetermined length.

In addition, it is preferable that an ignition plug of the ignition device is provided on the protection plate, and an ignition nozzle portion for spraying the fuel gas toward the ignition plug is formed on one side of the gas injection nozzle.

It is preferable that the air resistance plate is protruded from the outer circumferential surface of the securing plate and a stay coupled to the burner body is protruded from the outside of the air resistance plate.

In addition, it is preferable that a second air jet hole is formed in a portion of the boehmite plate where the radially extending jet nozzles are not coupled.

In addition, it is preferable that a third air ejection hole is formed at the center of the protective plate to eject air through the spaces between the radially extending ejection nozzles.

It is preferable that the flame spraying guide has a combustion gas recirculation portion curved inward toward the front.

The present invention provides a mixed fuel using a mixing method in which air and fuel gas collide with each other. Therefore, even in the case of excess air, the combustion is completed rapidly before the nitrogen oxide is generated.

The present invention also provides both a nitrogen oxide reduction technique using an air excess region and a fuel excess region in one burner. Therefore, nitrogen oxides are reduced without being influenced by the installation conditions of the combustion chamber or the burner.

In addition, the present invention simultaneously provides the primary air for oxidation and reduction, the secondary air for flame stabilization by the generation of the negative pressure, and the tertiary air for cooling the center. Therefore, it provides a stable flame simultaneously with the reduction of nitrogen oxides.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a cross-sectional side view of a conventional low nitrogen oxide burner; FIG.
1B is a front view of a conventional low nitrogen oxide burner.
2 is an assembled state view showing a nitrogen oxide reduction type gas burner according to the present invention.
3 is an exploded state view showing a nitrogen oxide reduction type gas burner according to the present invention.
4 is a front view showing a nitrogen oxide reduction type gas burner according to the present invention.
5 is a side sectional view showing an air and gas supply path of a nitrogen oxide reduction type gas burner according to the present invention.
6 is a conceptual diagram showing a flame generated in a nitrogen oxide reduction gas burner according to the present invention.

Hereinafter, a nitrogen oxide reduction type gas burner according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2, the nitrogen oxide reduction type gas burner according to the present invention includes a burner body 110 for supplying combustion air, a gas injection nozzle 120 for supplying the fuel gas in the lateral direction, and a burner body 110 And a flame stabilizing plate 130 for distributing the supplied air as primary, secondary, and tertiary air.

In addition, a fuel supply pipe 140 for supplying the fuel gas to the gas injection nozzle 120, an ignition device IG for igniting the mixed fuel in which the air and the fuel gas are mixed, And a flame jetting guide 150 for guiding the flame.

At this time, the gas injection nozzle 120 is installed inside the burner body 110, and the protection plate 130 is coupled to the rear of the gas injection nozzle 120. The supply pipe connection 124 protruding from the rear of the gas injection nozzle 120 is assembled through the protection plate 130 and the fuel supply pipe 140 is connected to the supply pipe connection port 124.

Accordingly, the fuel gas supplied through the fuel supply pipe 140 is injected in a lateral direction through the gas injection nozzle 120, and the air supplied through the burner body 110 flows into the first air- (A1), the second air ejection hole (A2), and the third air ejection hole (A3).

Then, the mixed fuel of fuel gas and air is ignited by an ignition device IG such as an igniter or the like to generate a flame, and the generated flame is guided in a specific direction through the flame guide 150.

More specifically, the burner body 110 has an air supply path formed therein, and has a tubular shape with front and rear openings.

The tubular burner body 110 may have a polygonal cross section, but preferably a circular tube is used.

Since the burner body 110 uses a tube shape to house the respective components therein and to provide the air supply path, a similar shape can be used as long as this is possible.

The gas injection nozzle 120 injects the fuel gas and is installed inside the front portion of the burner body 110 from which the flame is ejected.

In particular, the gas injection nozzle 120 of the present invention injects the fuel gas toward the inner circumferential surface of the burner body 110, unlike the prior art. That is, in the prior art, the fuel gas is injected laterally as opposed to injecting the fuel gas forward.

The reason for spraying the fuel gas in the lateral direction is to collide with the air supplied through the burner body 110 (more precisely, primary air to be described later) so that rapid fuel mixing can take place.

Rapid fuel mixing shortens the time it takes for the injected fuel to burn, so combustion is completed before the nitrogen oxides are generated, and this phenomenon continues to be repeated for subsequently supplied fuel.

For example, when the gas injection nozzle 120 is installed in a direction perpendicular to the axial direction of the burner body 110 (that is, the cross-sectional direction of the burner body) as shown in FIG. 2, the injected fuel gas is perpendicular Vertical direction.

Therefore, even when the fuel gas collides with the primary air vertically and is rapidly mixed, and the mixed fuel is excess air, the combustion is completed rapidly before the nitrogen oxide is generated. Therefore, nitrogen oxides are reduced without using the air shortage method.

As can be seen in more detail in FIG. 3, the gas injection nozzle 120 has a plurality of injection nozzle portions 121 and 122 extending radially with respect to a central portion thereof. A gas supply nozzle 124 is provided at the rear of the gas injection nozzle 120.

A gas supply path (G in FIG. 4) is formed in the gas injection nozzle 120, and each of the injection nozzle parts 121 and 122 is connected to the gas supply path G. The injection holes 121a and 122a are formed on the end faces of the injection nozzle portions 121 and 122 and face the inner circumferential face of the burner body 110, respectively.

Therefore, the injection nozzle portions 121 and 122 of the radially extending gas injection nozzle 120 inject fuel gas toward the inner circumferential surface of the burner body 110, respectively. The injected fuel gas collides with the primary air being supplied through the clearance A1 between the burner body 110 and the securing plate 130. [

In FIG. 3, for example, six injection nozzles are arranged at intervals of 60 degrees along the circumferential direction. However, it is possible to have more than six or less than six, if necessary.

In addition, the present invention classifies the plurality of injection nozzle portions 121 and 122 into an oxidation region nozzle portion 121 in which air is excessively supplied and a reduction region nozzle portion 122 in which fuel gas is excessively supplied. This provides both nitrous oxide reduction techniques using overfilled and overfueled areas in a single burner.

At this time, the portion of the first air ejection hole A1 where the reduction region nozzle portion 122 is disposed is blocked by the air resistance plate 133. [ The first air blowing hole A1 is formed by a gap between an inner circumferential surface of the burner body 110 and an outer circumferential surface (OCS) of the securing plate 130 to provide primary air.

The oxidation region nozzle 121 is directly exposed to the first air blowing hole A1, and thus corresponds to an air rich zone. The oxidizing salt generated by the oxidizing region nozzle 121 becomes hot and short-circuited.

On the other hand, the reduction region nozzle unit 122 corresponds to the gas rich zone because the air resistance plate 133 lacks air. The reducing salt generated by the reduction region nozzle unit 122 is a low temperature and long-lasting enteritis.

As described above, since the fuel gas is mixed with the primary air, the combustion is completed rapidly before the nitrogen oxides are generated. In other words, nitrogen oxides are reduced.

Also, the enteric by the reduction zone nozzle unit 122 is in an air-deficient state, which also reduces nitrogen oxides. Nitric oxide (Nox) is a compound of nitrogen and oxygen, which is produced when the nitrogen in the air is oxidized at high temperature during combustion.

Therefore, nitrogen oxides are naturally suppressed in an air shortage state. In addition, the excessive gas is not low enough to reach the temperature at which the nitrogen oxides are produced because of the low burning rate. To this end, the present invention is provided with an air resistance plate 133.

In addition, since the oxidizing region nozzle 121 and the reducing region nozzle 122 are radially separated from each other, the resulting unconjugated salts and enteric salts are also separated from each other and do not affect each other. Therefore, .

Particularly, when the radially extending oxidizing region nozzle portion 121 and the reducing region nozzle portion 122 are arranged alternately with each other, the high temperature monatomic salt (i.e., oxidizing salt) and the low temperature enteric salt (i.e., reduced salt) Thereby forming a uniform temperature distribution throughout.

However, it is preferable that a cut-out portion 122b is formed at the end of the reduction region nozzle portion 122 so that the gas supply path G formed therein is exposed to a certain length. When the gas supply path G is exposed through the cutout 122b, the fuel gas diffuses somewhat widely, so that combustion failure is prevented even when the air resistance plate 133 is clogged and air is insufficient.

When a spark plug of the ignition device IG is installed on the stuck plate 130 as described later, an ignition nozzle part 123 for spraying the fuel gas toward the spark plug is provided on one side of the gas injection nozzle 120 .

The ignition nozzle unit 123 is formed in the form of a spray hole through which fuel gas is injected. For example, if the fuel gas is replenished from the ignition nozzle unit 123 toward the spark plug, ignition failure is prevented.

Next, the protective plate 130 is connected to the rear of the gas injection nozzle 120 by distributing and supplying the air supplied through the burner body 110 to the primary, secondary, and tertiary air. A screw hole BH is formed in the protective plate 130 and is screwed to the gas injection nozzle 120.

An assembly hole 131 is formed in the central portion of the boiling plate 130 to receive the supply pipe connection port 124 of the gas injection nozzle 120. The assembly hole 131 is also used as a third air ejection hole A3 described later.

As shown in FIG. 4, the shield plate 130 has a smaller cross-sectional area than the air supply path of the burner body 110, and is disposed at the center of the burner body 110. Therefore, the first air ejection hole A1 is formed by the gap between the inner circumferential surface of the burner body 110 and the outer circumferential surface OCS of the securing plate 130. That is, the gap is used as the first air ejection hole A1.

A second air ejection hole A2 is formed in a portion of the radiation plate 130 where the radially extending ejection nozzle portions 121 and 122 are not coupled. A plurality of second air ejection holes A2 in each zone may be used.

A third air ejection hole A3 for ejecting air is formed in the center of the radiation plate 130 between the radially extending ejection nozzle portions 121 and 122. [ The diameter of the third air ejection hole A3 is determined so as to extend to the outer side of the branch starting point of each of the ejection nozzle portions 121 and 122 so that air is blown out between the ejection nozzle portions 121 and 122.

5 shows a direction in which air supplied through the burner body 110 is blown out through the first air blowing hole A1, the second air blowing hole A2 and the third air blowing hole A3. As described above, the present invention simultaneously provides the primary air, the secondary air, and the tertiary air through one burner body 110.

The primary air supplied through the first air blowing hole A1 is supplied to the oxidation region nozzle portion 121 and the reduction region nozzle portion 122 of the gas injection nozzle 120 so that nitrogen oxides So that oxidizing salts and reducing salts are reduced.

The size of the second air blowing hole A2 is relatively small, so that the rapidly blown secondary air generates negative pressure around the second air blowing hole A2. Therefore, stable flame resistance is generated in the furnace. Flame is a flame generated at a location separated from the central side of the burner rather than the enteric salt and the salt by the primary air.

In particular, the secondary air by the second air blowing hole A2 generates a negative pressure in the furnace as described above, thereby causing the flame to be distanced to the front of the boiling plate 130 to prevent unstable combustion.

The tertiary air ejected through the third air ejection hole A3 provides a cooling effect. Since the central portion of the burner surrounded by the enteritis, monitis and flame resistance is at a high temperature, the central portion of the gas injection nozzle 120 is prevented from being overheated by using tertiary air. In addition, the temperature inside the flame is lowered to suppress the generation of nitrogen oxides.

However, it is preferable that the above-described air resistance plate 133 is integrally formed on the outer circumferential surface of the protective plate 130. This makes it unnecessary to separately assemble the air resistance plate 133 that blocks the first air ejection hole A1.

It is preferable that a stay 132 coupled to the burner body 110 is formed on the outer side of the air resistance plate 133. The stays 132 are arranged at regular intervals along the circumferential direction of the stuck plate 130 so that the stuck plates 130 are installed in the center of the burner body 110.

It is preferable that an ignition assistance plate 131a for blocking the third air spray hole A3 is provided at the portion of the inner peripheral surface ICS of the protective plate 130 where the spark plug is inserted.

The ignition assistance plate 131a abuts against the supply pipe connection port 124 of the gas injection nozzle 120 to prevent the third air for cooling from being injected through the third air ejection hole A3 during ignition. Therefore, the ignition nozzle unit 123 is further ignited.

The fuel supply pipe 140 is inserted into the center of the burner body 110 by supplying fuel gas to the gas injection nozzle 120. The fuel supply pipe 140 is assembled by being fitted into a supply pipe connection 124 provided at the rear of the gas injection nozzle 120.

For example, as shown in FIG. 3, a screw hole 124a is formed on a side of the supply pipe connecting hole 124, so that the fuel pipe 140 is assembled when the bolt is fastened to the screw hole 124a.

The ignition device IG ignites the mixed fuel in which the fuel gas injected from the gas injection nozzle 120 and the air injected from the first air ejection hole A1 are mixed.

The ignition device (IG) is preferably an electric ignition device (IG), and an ignition plug on the ignition device (IG) is installed through the refill plate (130).

The flame spraying guide 150 is coupled to the front end of the burner body 110 from which the flame is ejected and guides the ejection of the flame ignited by the ignition device IG.

The flame spraying guide 150 can be formed in various shapes and guides the jetted flame in a necessary direction. For example, when the flame is sprayed straight forward, it is formed like a tube like the burner body 110.

However, it is preferable that the flame spraying guide 150 has a combustion gas recirculation portion bent inward as it goes forward, and the combustion gas recycling portion causes the incompletely combusted fuel gas to be recirculated back to the inside to cause complete combustion.

FIG. 6 conceptually represents a flame ejected through the nitrogen oxide reduction type gas burner of the present invention.

As shown in FIG. 6, the flames ejected by the burner of the present invention include an air rich zone, a gas rich zone and an inner flame as described above, and they are ejected without colliding with each other.

The mono-salt is formed by the oxidation region nozzle portion 121, and the enteritis is formed by the reduction region nozzle portion 122, both of which are supplied with the main air by the first air ejection hole A1.

The salt is formed on the inner side of the above-mentioned mono-salt and enteric salt, and the salt is supplied with the main air by the second air blowing hole (A2).

The specific embodiments of the present invention have been described above. It is to be understood, however, that the scope and spirit of the present invention is not limited to these specific embodiments, and that various modifications and changes may be made without departing from the spirit of the present invention. If you have, you will understand.

Therefore, it should be understood that the above-described embodiments are provided so that those skilled in the art can fully understand the scope of the present invention. Therefore, it should be understood that the embodiments are to be considered in all respects as illustrative and not restrictive, The invention is only defined by the scope of the claims.

110: burner body 120: gas injection nozzle
121: oxidation area nozzle part 122: reduction area nozzle part
123: ignition nozzle part 124: supply pipe fitting
130: Boiler plate 131: Assembly hole (third air ejection hole)
132: air resistance plate 133: stay
140: fuel supply pipe 150: flame spout guide
IG: Ignition device A1: First air blower
A2: Second air blowing hole A3: Third air blowing hole (assembling hole)

Claims (9)

A tubular burner body 110 having an air supply path formed therein;
A gas injection nozzle 120 installed inside the burner body 110 for spraying fuel gas toward the inner circumferential surface of the burner body 110;
A flame stabilizing plate 130 coupled to the rear of the gas injection nozzle 120 and having a relatively smaller cross sectional area than the air supply path of the burner body 110;
And a first air blowing hole (120) formed by a gap between an inner circumferential surface of the burner body (110) and an outer circumferential surface of the securing plate (130) so that air is mixed with the fuel gas injected from the gas injection nozzle (A1);
A fuel supply pipe 140 for supplying a fuel gas to the gas injection nozzle 120;
An ignition device (IG) for igniting mixed fuel in which the fuel gas injected from the gas injection nozzle (120) and the air injected from the first air ejection hole (A1) are mixed; And
And a flame spraying guide 150 coupled to the front end of the burner body 110 for guiding the flame ignited by the ignition device IG,
The gas injection nozzle 120 has a plurality of injection nozzle portions 121 and 122 extending radially with respect to a central portion thereof and the plurality of injection nozzle portions 121 and 122 are formed in an oxidation region nozzle portion And a reducing region nozzle unit 122 in which fuel gas is excessively supplied and a portion of the first air blowing hole A1 in which the reduction region nozzle unit 122 is disposed is divided into an air resistance plate 133 Wherein the gas burner is a gas burner of reduced nitrogen oxide. delete delete The method according to claim 1,
Wherein the radially extending oxidizing area nozzle part (121) and the reducing area nozzle part (122) are alternately arranged. The method according to claim 1,
Wherein a cutout portion (122b) is formed at an end of the reduction region nozzle portion (122) to expose a gas supply path (G) formed therein. The method according to claim 1,
A spark plug of the ignition device IG is installed in the protective plate 130 and an ignition nozzle part 123 for spraying a fuel gas toward the ignition plug is installed on one side of the gas injection nozzle 120. [ Is formed on the surface of the gas burner. The method according to claim 1,
The air resistance plate 133 protrudes from the outer circumferential surface of the protection plate 130 and a stay 132 coupled to the burner body 110 is formed on the outer side of the air resistance plate 133 Wherein the gas burner is a nitrogen gas burner. The method according to claim 1,
And a second air blowing hole (A2) is formed in a portion of the boiling plate (130) where the radially extending injection nozzle parts (121, 122) are not joined. 9. The method of claim 8,
And a third air ejection hole (A3) for ejecting air through the gap between the radially extending ejection nozzle parts (121, 122) is formed in the central part of the rib plate (130) Gas burner.
KR20140014744A 2014-02-10 2014-02-10 Gas burner for low NOx KR101504451B1 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107461742A (en) * 2017-08-09 2017-12-12 苏州博墨热能产品有限公司 It is classified nonflame low nitrogen burning head
CN110657433A (en) * 2019-09-11 2020-01-07 向顺华 Gas cladding type low-nitrogen non-oxidation burner
KR200491190Y1 (en) * 2018-08-23 2020-05-15 하용구 Low NOx burner
WO2020105799A1 (en) * 2018-11-20 2020-05-28 김서인 Melting furnace system for reducing fine dust
CN111492179A (en) * 2017-12-21 2020-08-04 Bsh家用电器有限公司 Injector device for a gas burner of a household appliance, gas burner and household appliance
CN112361335A (en) * 2020-11-27 2021-02-12 华侨大学 Combustor based on multizone burning

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200448947Y1 (en) 2009-10-19 2010-06-09 주식회사 수국 Low nitrogen oxide burner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200448947Y1 (en) 2009-10-19 2010-06-09 주식회사 수국 Low nitrogen oxide burner

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107461742A (en) * 2017-08-09 2017-12-12 苏州博墨热能产品有限公司 It is classified nonflame low nitrogen burning head
CN111492179A (en) * 2017-12-21 2020-08-04 Bsh家用电器有限公司 Injector device for a gas burner of a household appliance, gas burner and household appliance
CN111492179B (en) * 2017-12-21 2023-08-29 Bsh家用电器有限公司 Injector device for a gas burner of a household appliance, gas burner and household appliance
KR200491190Y1 (en) * 2018-08-23 2020-05-15 하용구 Low NOx burner
WO2020105799A1 (en) * 2018-11-20 2020-05-28 김서인 Melting furnace system for reducing fine dust
CN110657433A (en) * 2019-09-11 2020-01-07 向顺华 Gas cladding type low-nitrogen non-oxidation burner
CN110657433B (en) * 2019-09-11 2023-12-29 上海炉艺智能科技发展有限公司 Fuel gas cladding type low-nitrogen non-oxidation burner and use method thereof
CN112361335A (en) * 2020-11-27 2021-02-12 华侨大学 Combustor based on multizone burning

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