WO2023093554A1 - Gas-air mixing structure and burner - Google Patents

Gas-air mixing structure and burner Download PDF

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Publication number
WO2023093554A1
WO2023093554A1 PCT/CN2022/131636 CN2022131636W WO2023093554A1 WO 2023093554 A1 WO2023093554 A1 WO 2023093554A1 CN 2022131636 W CN2022131636 W CN 2022131636W WO 2023093554 A1 WO2023093554 A1 WO 2023093554A1
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Prior art keywords
gas
air
pipe
mixing structure
array
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PCT/CN2022/131636
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French (fr)
Chinese (zh)
Inventor
李为臻
张景才
张涛
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中国科学院大连化学物理研究所
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Priority claimed from CN202122880926.2U external-priority patent/CN216346272U/en
Priority claimed from CN202111396849.1A external-priority patent/CN114034043A/en
Application filed by 中国科学院大连化学物理研究所 filed Critical 中国科学院大连化学物理研究所
Priority to CA3238036A priority Critical patent/CA3238036A1/en
Publication of WO2023093554A1 publication Critical patent/WO2023093554A1/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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone

Definitions

  • the invention relates to the technical field of combustion equipment, in particular to a gas mixing structure and a combustion machine.
  • the gas mixing structure of the traditional burner is as follows: the fan inhales fresh air from the air inlet, and enters the air duct of the combustion head after being accelerated by the fan impeller; the gas enters the gas pipe in the combustion head through the gas pipeline, and enters the mixed gas at the front end of the combustion head through the gas pipe Plate hole; fresh air and gas are initially mixed and ignited in the gas mixing plate, and gas and air are further mixed and burned during the combustion process.
  • the gas mixture structure of the traditional burner is simple, but the gas mixture is uneven. It is initially mixed before combustion, and the combustion method is mixed while burning, and a large amount of NO x (>150mg/Nm 3 ) and CO are generated at local high temperatures, polluting environment.
  • the staged combustion burner includes gas classification and air classification. Taking air classification as an example, the primary air and gas are mixed to form a premixed gas, and the excess gas forms a fuel-rich gas; Ignite to form a rich-burning flame in the center; the secondary air is directly mixed into the surroundings of the flame through the secondary air channel, and a lean-burning flame with excess air is formed around the flame.
  • the staged combustion burner can complete the mixing while burning. Solve the pollution problems of NO x (>150mg/Nm 3 ) and CO, but its structure is complex, and the combustion flame is violently turbulent.
  • the air is sucked into the fan through the Venturi inlet of the fan, and the gas is sucked into the fan through the Venturi inlet of the fan.
  • the gas and air are in the fan ( Explosion-proof)
  • the interior is stirred by the impeller at high speed to complete the mixing.
  • the mixed premixed gas enters the inner cylinder of the metal surface combustion head, and the premixed gas reaches the surface of the combustion head through the micro-gap of the metal fiber and is ignited to form a surface combustion flame.
  • the burner It can achieve low emission of CO and NOx , but it needs to match special fan and valve group and Venturi intake structure.
  • the structure is complex and the control system is complex.
  • the burner is a metal surface burner, which is easy to block, temper, or even explode. , there is a large security risk, and frequent maintenance.
  • a gas mixing structure including an external support structure placed in a casing and a gas array tube connected thereto, an air inlet connected to one end of the casing, and a gas mixing tube is provided between the gas array tube and the gas mixture outlet.
  • the gas array pipe is composed of a plurality of gas pipes arranged in an array, and the gas pipe is provided with a gas inlet and an air outlet, and the air outlet is arranged on the leeward side of the gas pipe.
  • the air outlet is arranged on the leeward side of the gas pipe, and the air outlet is a round hole or a slit.
  • cross-sectional area of a single air outlet is 1/20 to 1/2 of the cross-sectional area of the gas pipe.
  • a plurality of round holes with a cross-sectional area of 1/10 of the cross-sectional area of the gas pipe are evenly distributed at the center of the leeward side of the gas pipe at a distance of 5 times the diameter of the hole.
  • gas pipes arranged in an array form at least one row.
  • the upper and lower rows are staggered.
  • the external support structure includes a gas distribution cavity surrounding the gas array tube, the gas distribution cavity is provided with a main intake pipe, one end of each gas tube is connected to the gas distribution cavity or both ends of each gas tube are Connected with the gas distribution chamber.
  • gas distribution cavity includes annular, C-shaped, return-shaped and single-end air intake.
  • the present invention also provides a burner, which includes the gas and air mixing structure.
  • the present invention arranges gas inlet pipes (vertically) on the air channel, and arranges gas outlets at intervals on the leeward side of the pipes, and uses the Coanda effect of air on the round pipes to mix with the gas ejected from the air outlets ,well mixed.
  • this kind of mixing method of air and gas behind the fan does not need to suck the gas into the fan and mix it with the impeller in the fan, avoiding the mechanical friction caused by the rotation of the fan Risk of deflagration of gas and air mixture due to possible electrostatic discharge, increased safety.
  • Fig. 1 is a side sectional view of the present invention.
  • Fig. 2 is a top sectional view of the present invention.
  • Fig. 3 is a sectional view of the present invention facing the air outlet.
  • Fig. 4 is a sectional view of the present invention facing the air inlet.
  • Fig. 5 is a schematic diagram of the gas mixture of the present invention.
  • Fig. 6 is the specific implementation diagram of the gas distribution cavity in the embodiment of the present invention, wherein (a) is a type of back-shaped air intake; (b) is a type of back-shaped air intake; (c) is a type of air intake of C; (d) ) is single-ended air intake; (e) is annular air intake type a; (f) is annular air intake type b.
  • the embodiment of the present invention discloses a gas and air mixing structure, including an external support structure 2 placed in a housing 1 and a gas array tube connected thereto, and an air inlet (i.e. tuyere) is connected to one end of the housing, a gas mixing channel is provided between the gas array tube and the gas mixture outlet (i.e. the gas outlet), the gas array tube is composed of a plurality of gas tubes arranged in an array, and the gas
  • the pipe is provided with a gas inlet and an air outlet, and the air outlet is arranged on the leeward side of the gas pipe, and the gas output from the air outlet is combined with air to form the mixed gas.
  • the air outlet is arranged on the leeward side of the gas pipe, and the air outlet is a round hole or a slit.
  • the specific specification of a single air outlet is that its cross-sectional area is 1/20 to 1/2 of the cross-sectional area of the gas pipe.
  • the arrangement of air outlet holes is as follows: a plurality of circular holes with a cross-sectional area of 1/10 of the cross-sectional area of the gas pipe are evenly distributed at the center of the leeward side of the gas pipe at a distance of 5 times the hole diameter.
  • the gas pipes arranged in an array form at least one row. As shown in Figure 5, when there are multiple rows of gas pipes, two adjacent rows are arranged in a staggered position.
  • the external support structure and the housing form a gas distribution chamber
  • the housing of the gas distribution chamber is provided with an air inlet main pipe
  • one end of each gas pipe is connected to the gas distribution chamber or both ends of each gas pipe are connected to the gas distribution chamber. cavities connected.
  • the gas distribution cavity includes annular, C-shaped, return-type and single-end air intake.
  • each gas pipe is kept parallel to the main intake pipe
  • each gas pipe is kept perpendicular to the main air intake pipe , the gas circulates in a circular shape.
  • the C-shaped air intake shown in Figure 6(c) has a closed end, and each gas pipe is kept parallel to the main intake pipe.
  • the pipe is kept vertical to the main air intake pipe, and the left and right sides are closed, that is, the passing gas circulates in each gas pipe.
  • the general idea of the annular air intake shown in Fig. The circular air intake shown is the same, the difference is that the circulation path is annular.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Abstract

A gas-air mixing structure and a burner, comprising an external supporting structure (2) arranged in a housing (1) and a gas array pipe connected to the external supporting structure (2). An air inlet is connected to one end of the housing (1). A gas mixing channel is provided between the gas array pipe and a mixed gas outlet. The gas array pipe consists of multiple gas pipes (3) arranged in an array, the gas pipes (3) are provided with gas inlets and gas outlets (4), and the gas outlets (4) are arranged on the leeward surfaces of the gas pipes (3). A gas inlet pipe is arranged on the air channel and gas outlet holes (4) are spaced apart on the leeward surfaces of the gas pipes (3) to uniformly mix the gas ejected from the gas outlet holes (4) by utilizing a Coanda effect of air upon a circular pipe.

Description

一种燃气与空气混气结构及燃烧机Gas and air mixture structure and burner 技术领域technical field
本发明涉及燃烧设备技术领域，尤其涉及一种燃气混气结构及燃烧机。The invention relates to the technical field of combustion equipment, in particular to a gas mixing structure and a combustion machine.
背景技术Background technique
传统燃烧机混气结构具体为：风机从进风口吸入新鲜空气，经风机叶轮加速后进入燃烧头风道；燃气经过燃气管路进入燃烧头内燃气管，经燃气管进入燃烧头最前端的混气盘孔道；新鲜空气与燃气在混气盘完成初步混合并被点燃，燃气与空气在燃烧过程中进一步混合并燃尽。传统的燃烧机混气结构简单，但是混气不均匀，其是在燃烧前初步混合，采取边燃烧边混合的燃烧方式，在局部高温生成大量NO x(>150mg/Nm 3)以及CO，污染环境。 The gas mixing structure of the traditional burner is as follows: the fan inhales fresh air from the air inlet, and enters the air duct of the combustion head after being accelerated by the fan impeller; the gas enters the gas pipe in the combustion head through the gas pipeline, and enters the mixed gas at the front end of the combustion head through the gas pipe Plate hole; fresh air and gas are initially mixed and ignited in the gas mixing plate, and gas and air are further mixed and burned during the combustion process. The gas mixture structure of the traditional burner is simple, but the gas mixture is uneven. It is initially mixed before combustion, and the combustion method is mixed while burning, and a large amount of NO x (>150mg/Nm 3 ) and CO are generated at local high temperatures, polluting environment.
分级燃烧燃烧机包括燃气分级和空气分级，以空气分级为例，一次空气和燃气混合成为一次预混气，燃气过量，形成富燃气体；一次预混气经一次预混气通道到达燃烧盘被点燃，形成中心富燃火焰；二次空气经二次空气通道直接混入火焰四周，在火焰四周形成空气过量的贫燃火焰，分级燃烧燃烧机能做到边燃烧边完成混合，其能够在一定程度上解决NO x(>150mg/Nm 3)以及CO的污染问题，但是其结构复杂，同时燃烧火焰激烈湍动。 The staged combustion burner includes gas classification and air classification. Taking air classification as an example, the primary air and gas are mixed to form a premixed gas, and the excess gas forms a fuel-rich gas; Ignite to form a rich-burning flame in the center; the secondary air is directly mixed into the surroundings of the flame through the secondary air channel, and a lean-burning flame with excess air is formed around the flame. The staged combustion burner can complete the mixing while burning. Solve the pollution problems of NO x (>150mg/Nm 3 ) and CO, but its structure is complex, and the combustion flame is violently turbulent.
目前市面上还有一种全/前预混燃烧机，其采用文丘里结构，具体地，空气经风机文丘里进风口吸入风机，燃气经风机文丘里进气口吸入风机，燃气与空气在风机(防爆)内部经叶轮高速搅动完成混合，混合后的预混气进入金属表面燃烧头的内筒，预混气经金属纤维微间隙达到燃烧头表面并被点燃，形成表面燃烧火焰，该燃烧机虽然可以做到CO和NO x的低排放，但是需要匹配特殊的风机和阀组及文丘里进气结构，结构复杂、控制系统复杂，燃烧器为金属表面燃烧器，容易堵塞、回火、甚至爆炸，存在较大安全风险，同时维保频繁。 At present, there is also a full/front premixed burner on the market, which adopts a Venturi structure. Specifically, the air is sucked into the fan through the Venturi inlet of the fan, and the gas is sucked into the fan through the Venturi inlet of the fan. The gas and air are in the fan ( Explosion-proof) The interior is stirred by the impeller at high speed to complete the mixing. The mixed premixed gas enters the inner cylinder of the metal surface combustion head, and the premixed gas reaches the surface of the combustion head through the micro-gap of the metal fiber and is ignited to form a surface combustion flame. Although the burner It can achieve low emission of CO and NOx , but it needs to match special fan and valve group and Venturi intake structure. The structure is complex and the control system is complex. The burner is a metal surface burner, which is easy to block, temper, or even explode. , there is a large security risk, and frequent maintenance.
发明内容Contents of the invention
根据上述提出的技术问题，而提供一种燃气混气结构及燃烧机。本发明采用的技术手段如下：According to the technical problem raised above, a gas mixing structure and a burner are provided. The technical means adopted in the present invention are as follows:
一种燃气混气结构，包括置于壳体中的外部支撑结构和与之相连接的燃气阵列管，空气进口与壳体一端相连，所述燃气阵列管与混合气出口之间设有混气通道，所述燃气阵列管由多个阵列式排布的燃气管组成，所述燃气管设有燃气进气口和出气孔，所述出气孔设置在燃气管背风面上。A gas mixing structure, including an external support structure placed in a casing and a gas array tube connected thereto, an air inlet connected to one end of the casing, and a gas mixing tube is provided between the gas array tube and the gas mixture outlet. The gas array pipe is composed of a plurality of gas pipes arranged in an array, and the gas pipe is provided with a gas inlet and an air outlet, and the air outlet is arranged on the leeward side of the gas pipe.
进一步地，所述出气孔设置在燃气管背风面，出气孔为圆孔或者狭缝。Further, the air outlet is arranged on the leeward side of the gas pipe, and the air outlet is a round hole or a slit.
进一步地，单个出气孔的截面积为燃气管截面积的1/20到1/2。Further, the cross-sectional area of a single air outlet is 1/20 to 1/2 of the cross-sectional area of the gas pipe.
进一步地，多个截面积为燃气管截面积1/10的圆孔以5倍孔直径的间距均布在燃气管背风面的中心处。Further, a plurality of round holes with a cross-sectional area of 1/10 of the cross-sectional area of the gas pipe are evenly distributed at the center of the leeward side of the gas pipe at a distance of 5 times the diameter of the hole.
进一步地，所述阵列式排布的燃气管为至少一排。Further, the gas pipes arranged in an array form at least one row.
进一步地，燃气管为多排时，上下两排错位布置。Further, when there are multiple rows of gas pipes, the upper and lower rows are staggered.
进一步地，所述外部支撑结构包括环绕所述燃气阵列管的燃气分配腔，所述燃气分配腔设有进气总管，各燃气管的一端与燃气分配腔相连或是各燃气管的两端均与燃气分配腔相连。Further, the external support structure includes a gas distribution cavity surrounding the gas array tube, the gas distribution cavity is provided with a main intake pipe, one end of each gas tube is connected to the gas distribution cavity or both ends of each gas tube are Connected with the gas distribution chamber.
进一步地，所述燃气分配腔包括环形、C型、回型和单端进气。Further, the gas distribution cavity includes annular, C-shaped, return-shaped and single-end air intake.
本发明还提供一种燃烧机，其包括所述的燃气与空气混气结构。The present invention also provides a burner, which includes the gas and air mixing structure.
本发明基于康达效应，在空气通道上(垂直)设置燃气进气管，在管的背风面间隔设置出气口，利用空气在圆管上的附壁效应，与从出气口喷出的燃气进行混合，混合均匀。这种风机后空气和燃气的混合方式，与将燃气进口设置于风机进气口的前预混相比，无需将燃气吸入风机并在风机内靠叶轮混合的过程，避免了风机旋转产生的机械摩擦可能导致的静电放电引起燃气和空气混合气爆燃的风险，提高的安全性。Based on the Coanda effect, the present invention arranges gas inlet pipes (vertically) on the air channel, and arranges gas outlets at intervals on the leeward side of the pipes, and uses the Coanda effect of air on the round pipes to mix with the gas ejected from the air outlets ,well mixed. Compared with the pre-mixing method of setting the gas inlet at the fan inlet, this kind of mixing method of air and gas behind the fan does not need to suck the gas into the fan and mix it with the impeller in the fan, avoiding the mechanical friction caused by the rotation of the fan Risk of deflagration of gas and air mixture due to possible electrostatic discharge, increased safety.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实 施例或现有技术描述中所需要使用的附图做以简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.
图1为本发明侧视截面图。Fig. 1 is a side sectional view of the present invention.
图2为本发明俯视截面图。Fig. 2 is a top sectional view of the present invention.
图3为本发明面向出气口截面图。Fig. 3 is a sectional view of the present invention facing the air outlet.
图4为本发明面向进风口截面图。Fig. 4 is a sectional view of the present invention facing the air inlet.
图5为本发明混气示意图。Fig. 5 is a schematic diagram of the gas mixture of the present invention.
图6为本发明实施例中燃气分配腔具体实施方式图，其中(a)为回形进气a型；(b)为回形进气b型；(c)为C型进气；(d)为单端进气；(e)为环形进气a型；(f)为环形进气b型。Fig. 6 is the specific implementation diagram of the gas distribution cavity in the embodiment of the present invention, wherein (a) is a type of back-shaped air intake; (b) is a type of back-shaped air intake; (c) is a type of air intake of C; (d) ) is single-ended air intake; (e) is annular air intake type a; (f) is annular air intake type b.
图中：1.壳体；2.外部支撑结构；3.燃气管；4.出气孔；5.进气总管。In the figure: 1. Shell; 2. External support structure; 3. Gas pipe; 4. Air outlet; 5. Air intake main pipe.
具体实施方式Detailed ways
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
如图1～4所示，本发明实施例公开了一种燃气与空气混气结构，包括置于壳体1中的外部支撑结构2和与之相连接的燃气阵列管，空气进口(即进风口)与壳体一端相连，所述燃气阵列管与混合气出口(即出气口)之间设有混气通道，所述燃气阵列管由多个阵列式排布的燃气管组成，所述燃气管设有燃气进气口和出气孔，所述出气孔设置在燃气管背风面上，出气孔输出的燃气与空气结合形成所述混合气。As shown in Figures 1 to 4, the embodiment of the present invention discloses a gas and air mixing structure, including an external support structure 2 placed in a housing 1 and a gas array tube connected thereto, and an air inlet (i.e. tuyere) is connected to one end of the housing, a gas mixing channel is provided between the gas array tube and the gas mixture outlet (i.e. the gas outlet), the gas array tube is composed of a plurality of gas tubes arranged in an array, and the gas The pipe is provided with a gas inlet and an air outlet, and the air outlet is arranged on the leeward side of the gas pipe, and the gas output from the air outlet is combined with air to form the mixed gas.
所述出气孔设置在燃气管背风面，出气孔为圆孔或者狭缝。单个出气孔 具体规格为，其截面积为燃气管截面积的1/20到1/2。出气孔布置方式为：多个截面积为燃气管截面积1/10的圆孔以5倍孔直径的间距均布在燃气管背风面的中心处。The air outlet is arranged on the leeward side of the gas pipe, and the air outlet is a round hole or a slit. The specific specification of a single air outlet is that its cross-sectional area is 1/20 to 1/2 of the cross-sectional area of the gas pipe. The arrangement of air outlet holes is as follows: a plurality of circular holes with a cross-sectional area of 1/10 of the cross-sectional area of the gas pipe are evenly distributed at the center of the leeward side of the gas pipe at a distance of 5 times the hole diameter.
所述阵列式排布的燃气管为至少一排。如图5所示，燃气管为多排时，相邻两排错位布置。The gas pipes arranged in an array form at least one row. As shown in Figure 5, when there are multiple rows of gas pipes, two adjacent rows are arranged in a staggered position.
所述外部支撑结构与壳体构成燃气分配腔，所述燃气分配腔的壳体上设有进气总管，各燃气管的一端与燃气分配腔相连或是各燃气管的两端均与燃气分配腔相连。具体实施方式如图6(a)～(f)所示，所述燃气分配腔包括环形、C型、回型和单端进气。具体地，图6(a)所示的回形进气，各燃气管均与进气总管保持平行，图6(b)所示的回形进气，各燃气管均与进气总管保持垂直，燃气呈回形循环，图6(c)所示的C型进气，其末端封闭，各燃气管均与进气总管保持平行，图6(d)所示的单端进气，各燃气管与进气总管保持垂直，且左右封闭，即通过的燃气均在各燃气管内流通，图6(e)(f)所示的环形进气总体思路与图6(a)、(b)所示的回形进气相同，不同的是循环通路为环形。The external support structure and the housing form a gas distribution chamber, the housing of the gas distribution chamber is provided with an air inlet main pipe, and one end of each gas pipe is connected to the gas distribution chamber or both ends of each gas pipe are connected to the gas distribution chamber. cavities connected. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in Figure 6(a)-(f), the gas distribution cavity includes annular, C-shaped, return-type and single-end air intake. Specifically, for the back-shaped air intake shown in Figure 6(a), each gas pipe is kept parallel to the main intake pipe, and for the back-shaped air intake shown in Figure 6(b), each gas pipe is kept perpendicular to the main air intake pipe , the gas circulates in a circular shape. The C-shaped air intake shown in Figure 6(c) has a closed end, and each gas pipe is kept parallel to the main intake pipe. The pipe is kept vertical to the main air intake pipe, and the left and right sides are closed, that is, the passing gas circulates in each gas pipe. The general idea of the annular air intake shown in Fig. The circular air intake shown is the same, the difference is that the circulation path is annular.
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (9)

  1. 一种燃气与空气混气结构，其特征在于，包括置于壳体中的外部支撑结构和与之相连接的燃气阵列管，空气进口与壳体一端相连，所述燃气阵列管与混合气出口之间设有混气通道，所述燃气阵列管由多个阵列式排布的燃气管组成，所述燃气管设有燃气进气口和出气孔，所述出气孔设置在燃气管背风面上。A gas and air mixing structure, characterized in that it includes an external support structure placed in the housing and a gas array tube connected thereto, the air inlet is connected to one end of the housing, and the gas array tube is connected to the gas mixture outlet There is a gas mixing channel between them, and the gas array pipe is composed of a plurality of gas pipes arranged in an array, and the gas pipe is provided with a gas inlet and an air outlet hole, and the air outlet hole is arranged on the leeward surface of the gas pipe .
  2. 根据权利要求1所述的燃气与空气混气结构，其特征在于，所述出气孔设置在燃气管背风面，出气孔为圆孔或者狭缝。The gas and air mixing structure according to claim 1, wherein the air outlet is arranged on the leeward side of the gas pipe, and the air outlet is a round hole or a slit.
  3. 根据权利要求1所述的燃气与空气混气结构，其特征在于，单个出气孔的截面积为燃气管截面积的1/20到1/2。The gas and air mixing structure according to claim 1, characterized in that the cross-sectional area of a single air outlet is 1/20 to 1/2 of the cross-sectional area of the gas pipe.
  4. 根据权利要求1所述的燃气与空气混气结构，其特征在于，出气孔布置方式为：多个截面积为燃气管截面积1/10的圆孔以5倍孔直径的间距均布在燃气管背风面的中心处。The gas and air mixing structure according to claim 1, characterized in that the air outlet holes are arranged in such a way that a plurality of round holes with a cross-sectional area of 1/10 of the cross-sectional area of the gas pipe are evenly distributed in the gas pipe at a distance of 5 times the hole diameter. Center of the leeward side of the pipe.
  5. 根据权利要求1所述的燃气与空气混气结构，其特征在于，所述阵列式排布的燃气管为至少一排。The gas and air mixing structure according to claim 1, characterized in that the gas pipes arranged in an array are at least one row.
  6. 根据权利要求5所述的燃气与空气混气结构，其特征在于，燃气管为多排时，相邻两排错位布置。The gas and air mixing structure according to claim 5, wherein when there are multiple rows of gas pipes, two adjacent rows are staggered.
  7. 根据权利要求1所述的燃气与空气混气结构，其特征在于，所述外部支撑结构与壳体构成燃气分配腔，所述燃气分配腔的壳体上设有进气总管，各燃气管的一端与燃气分配腔相连或是各燃气管的两端均与燃气分配腔相连。The gas and air mixing structure according to claim 1, characterized in that, the external support structure and the casing form a gas distribution cavity, and the casing of the gas distribution cavity is provided with a main intake pipe, and each gas pipe One end is connected with the gas distribution chamber or both ends of each gas pipe are connected with the gas distribution chamber.
  8. 根据权利要求7所述的燃气与空气混气结构，其特征在于，所述燃气 分配腔包括环形、C型、回型和单端进气。The gas and air mixing structure according to claim 7, characterized in that, the gas distribution cavity includes annular, C-shaped, return-type and single-end air intake.
  9. 一种燃烧机，其特征在于，具有如权利要求1～8任一项所述的燃气与空气混气结构。A burner, characterized in that it has the gas and air mixing structure according to any one of claims 1-8.
PCT/CN2022/131636 2021-11-23 2022-11-14 Gas-air mixing structure and burner WO2023093554A1 (en)

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JP2863841B1 (en) * 1998-01-08 1999-03-03 科学技術庁航空宇宙技術研究所長 High load swivel burner array
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CN214038414U (en) * 2020-12-16 2021-08-24 四川铭能科技开发有限公司 Air and gas rapid mixer
CN114034043A (en) * 2021-11-23 2022-02-11 中国科学院大连化学物理研究所 Gas and air gas mixing structure and combustor
CN216346272U (en) * 2021-11-23 2022-04-19 中国科学院大连化学物理研究所 Gas and air gas mixing structure and combustor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1223197B (en) * 1963-03-07 1966-08-18 Sulzer Ag Gas burner of a gas turbine combustion chamber
EP0014221A1 (en) * 1979-02-03 1980-08-20 G. Kromschröder Aktiengesellschaft Gas heated tunnel burner for raising the temperature in melting furnaces or crucibles
JP2863841B1 (en) * 1998-01-08 1999-03-03 科学技術庁航空宇宙技術研究所長 High load swivel burner array
US20090241942A1 (en) * 2008-03-27 2009-10-01 Schwank Ltd. Radiant tube heater and burner assembly for use therein
CN207622007U (en) * 2017-11-28 2018-07-17 广西富力永恒厨房设备有限公司 Burner of gas stove
CN108980829A (en) * 2018-04-23 2018-12-11 上海钜荷热力技术有限公司 A kind of star-like gas-air premixed device
CN214038414U (en) * 2020-12-16 2021-08-24 四川铭能科技开发有限公司 Air and gas rapid mixer
CN112963833A (en) * 2021-02-24 2021-06-15 西安交通大学 Multistage cyclone burner of low nitrogen of ammonia
CN114034043A (en) * 2021-11-23 2022-02-11 中国科学院大连化学物理研究所 Gas and air gas mixing structure and combustor
CN216346272U (en) * 2021-11-23 2022-04-19 中国科学院大连化学物理研究所 Gas and air gas mixing structure and combustor

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