JPH0733901B2 - Combustion device - Google Patents
Combustion deviceInfo
- Publication number
- JPH0733901B2 JPH0733901B2 JP61304140A JP30414086A JPH0733901B2 JP H0733901 B2 JPH0733901 B2 JP H0733901B2 JP 61304140 A JP61304140 A JP 61304140A JP 30414086 A JP30414086 A JP 30414086A JP H0733901 B2 JPH0733901 B2 JP H0733901B2
- Authority
- JP
- Japan
- Prior art keywords
- secondary air
- plate
- port
- perforated plate
- flame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Gas Burners (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は燃焼機器の低騒音化を図った燃焼装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion device that reduces the noise of combustion equipment.
従来の技術 従来この種の燃焼装置は第４図に示すように、ファン
（図示せず）により燃焼用空気が供給され、一部は混合
室１（流れを一点鎖線矢印で示す）へ残りは二次空気
（以後V2）（流れを実線矢印で示す）として、二次空気
室２を流れ二次空気口３より、前記混合室１下流側へ備
えられた炎口４で形成される火炎へ供給される。又V2を
整流し乱れを制御する目的で、前記二次空気口３の上流
側に多数の小孔からなる多孔板５を配していた。2. Description of the Related Art Conventionally, as shown in FIG. 4, a combustion device of this type is conventionally supplied with combustion air by a fan (not shown), and a part of the mixture is fed to a mixing chamber 1 (the flow is indicated by an alternate long and short dash line arrow). A flame formed as a secondary air (hereinafter V 2 ) (the flow is indicated by a solid arrow) flowing through the secondary air chamber 2 and a flame port 4 provided downstream of the secondary air port 3 to the mixing chamber 1 Is supplied to. Further, for the purpose of rectifying V 2 and controlling turbulence, a porous plate 5 having a large number of small holes is arranged upstream of the secondary air port 3.
発明が解決しようとする問題点 しかしながら上記のような構成では、V2が前記多孔板５
の小孔を通過した後、急拡大によりエッジ部で乱れを発
生すること、又多孔板５の板厚が薄いため、V2の方向が
制御されず多孔板５上流側の流れの方向で二次空気口３
へ入ることで、火炎が乱れ燃焼騒音が大きくなる要因と
なっていた。又整流効果を増すために、多孔板５板厚を
大きくしたり、数段に重ねることもできるが多孔板５の
開孔率が小さいため、逆に圧損が大きくなり小孔を通過
する際生じる流体騒音やファン騒音を大きくするという
問題点を有していた。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above configuration, V 2 is the perforated plate 5
After passing through the small holes, the turbulence is generated at the edge part due to the sudden expansion, and since the plate thickness of the perforated plate 5 is thin, the direction of V 2 is not controlled and the flow direction on the upstream side of the perforated plate 5 is increased. Next air port 3
When it entered the, the flame was disturbed and the combustion noise became a factor. Further, in order to increase the rectifying effect, the plate thickness of the perforated plate 5 may be increased, or the plates may be stacked in several stages, but since the aperture ratio of the perforated plate 5 is small, the pressure loss becomes large, which occurs when passing through the small holes. There is a problem that the fluid noise and the fan noise are increased.
本発明は従来の問題を解消するもので、二次空気口上流
側のV2を整流し、乱れを抑制することによって火炎を安
定させ燃焼騒音を低減し、機器の低騒音化を図ることを
目的とする。The present invention solves the conventional problems, by rectifying V 2 on the upstream side of the secondary air port and suppressing turbulence to stabilize the flame and reduce combustion noise, and to reduce the noise of the device. To aim.
問題点を解決するための手段 上記問題点を解決するために本発明の燃焼装置は、混合
室下流側に炎口を備え、前記混合室の周囲にV2の流路と
なる二次空気室と、前記炎口と二次空気室とを連通し、
V2を噴出させる二次空気口とから成るバーナ本体におい
て、前記二次空気口の上流に多孔板とハニカム格子を重
ね合せた整流板で、ハニカム格子を下流側に位置させた
ものである。Means for Solving the Problems In order to solve the above problems, the combustion apparatus of the present invention includes a flame port on the downstream side of the mixing chamber, and a secondary air chamber that serves as a flow path for V 2 around the mixing chamber. And connecting the flame vent and the secondary air chamber,
In a burner body including a secondary air port for ejecting V 2 , a rectifying plate in which a porous plate and a honeycomb lattice are superposed on the upstream of the secondary air port, and the honeycomb lattice is located on the downstream side.
作用 本発明は上記した構成によって、V2が多孔板の通過後に
出口がハニカム格子により一つの小さな空間で仕切られ
ているため、急拡大が抑えられ、エッジ部での乱れが減
少される。又、開口面積が大きく、流れの方向に適当な
長さを有するハニカム格子が下流側に配されているため
圧損の上昇もなく前記ハニカム格子の壁面で流れがすべ
て同一方向に制御される。Action The present invention has the above-described configuration, and after V 2 passes through the perforated plate, the outlet is partitioned by the honeycomb lattice in one small space, so that the rapid expansion is suppressed and the turbulence at the edge portion is reduced. Further, since the honeycomb lattice having a large opening area and having an appropriate length in the flow direction is arranged on the downstream side, the pressure loss does not increase, and the flow is controlled in the same direction on the wall surface of the honeycomb lattice.
実施例 以下、本発明の実施例を添付図面にもとづいて説明す
る。第１図，第２図において10は燃焼用空気を供給する
ファンで、先端にノズル11を有する燃料管12と共にバー
ナ本体13に接続されている。前記バーナ本体13は、燃料
と空気を混合させる混合室14とその下流側に炎口15を備
え、周囲に外ケース16により囲まれた二次空気室17を配
し、前記炎口15と二次空気室17とを連通する二次空気口
18並びに、二次空気口18上流側二次空気室17に多孔板19
とハニカム格子20を重ね合せた整流板21で構成され、前
記整流板21は上流側に多孔板19、下流側にハニカム格子
20が配設されている。Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, 10 is a fan for supplying combustion air, which is connected to a burner body 13 together with a fuel pipe 12 having a nozzle 11 at its tip. The burner main body 13 is provided with a mixing chamber 14 for mixing fuel and air and a flame port 15 on the downstream side thereof, and a secondary air chamber 17 surrounded by an outer case 16 is arranged around the mixing chamber 14, and the flame port 15 and Secondary air port communicating with secondary air chamber 17
18 and the secondary air port 18 and the perforated plate 19 in the upstream secondary air chamber 17.
And consists of a rectifying plate 21 superposed honeycomb grid 20, the current plate 21 is porous plate 19 on the upstream side, the honeycomb lattice downstream
Twenty are arranged.
上記構成において、二次空気V2は二次空気室17の端面よ
り強制的に供給されるため、流れ方向は各部で異なり、
多孔板19に対しても不均一な角度で入り小孔を通り流出
するが、下流側に取付けられたハニカム格子20によっ
て、二次空気口18上流域ではすべての流れが同一方向に
整流される。又、多孔板19下流がハニカム格子20により
一つの小さな空間で仕切られているため、急拡大が抑え
られ、前記多孔板19エッジ部での乱れが減少される。そ
の結果、整流された乱れの少ないV2が二次空気口18へ供
給されるため安定な火炎が形成され燃料時の騒音が低減
される。又、例えば第３図に示すように、多孔板19の穴
径やピッチを変えたり、メッシュの異なる金網を組み合
わせた均圧手段22を設けることにより、多孔板19下流側
での流速分布を均一化することができ二次空気口18より
噴出されるV2の大きさも同時に均一化することができ、
一つの整流板21で、整流、均圧、乱れ抑制の効果を有す
るものである。In the above configuration, since the secondary air V 2 is forcibly supplied from the end surface of the secondary air chamber 17, the flow direction is different in each part,
The porous plate 19 also enters at a non-uniform angle and flows out through the small holes, but by the honeycomb lattice 20 mounted on the downstream side, all the flows are rectified in the same direction in the upstream region of the secondary air port 18. . Further, since the downstream side of the perforated plate 19 is partitioned by the honeycomb lattice 20 into one small space, rapid expansion is suppressed, and disturbance at the edge portion of the perforated plate 19 is reduced. As a result, the rectified V 2 with little turbulence is supplied to the secondary air port 18, so that a stable flame is formed and noise during fueling is reduced. Further, for example, as shown in FIG. 3, by changing the hole diameter and pitch of the perforated plate 19 or by providing a pressure equalizing means 22 in which wire meshes having different meshes are combined, the flow velocity distribution on the downstream side of the perforated plate 19 is made uniform. magnitude of V 2 ejected from can be secondary air inlet 18 can be of can also be equalized simultaneously,
One rectifying plate 21 has the effects of rectifying, equalizing pressure, and suppressing turbulence.
発明の効果 以上のように本発明の燃焼装置によれば次の効果が得ら
れる。Effects of the Invention As described above, the combustion device of the present invention has the following effects.
(1)二次空気口上流側に多孔板とハニカム格子を重ね合
せた整流板をハニカム格子側が下流側に位置するように
設けることにより、V2は多孔板通過後のエッジ部に生じ
る乱れが抑制され、しかも流れ方向がすべて同一方向に
制御される。その結果、炎口に安定したV2が供給でき、
火炎の安定が図られ燃焼騒音が低下する。(1) By providing a rectifying plate in which a perforated plate and a honeycomb lattice are superposed on the upstream side of the secondary air port so that the honeycomb lattice side is located on the downstream side, V 2 causes turbulence generated at the edge portion after passing through the perforated plate. It is suppressed and the flow directions are all controlled in the same direction. As a result, stable V 2 can be supplied to the flame outlet,
Flame stabilization is achieved and combustion noise is reduced.
(2)整流板の多孔板に均圧手段を設けることにより、V2
の流速分布も均一化され、小さなスペースで整流、均
圧、乱れ抑制作用を行うことができる。(2) By providing a pressure equalizing means on the perforated plate of the straightening plate, V 2
The flow velocity distribution is also made uniform, and rectification, pressure equalization, and turbulence suppression can be performed in a small space.
(3)開口率が大きなハニカム格子を使うことにより、多
孔板を多層に設置することなく整流が行え、その結果圧
損上昇が抑制でき、流体騒音やファン騒音も増大しな
い。(3) By using a honeycomb lattice with a large aperture ratio, rectification can be performed without installing a porous plate in multiple layers, and as a result, pressure loss increase can be suppressed and fluid noise and fan noise do not increase.
第１図は本発明の第１の実施例における燃焼装置の略正
面断面図、第２図は本発明の第１の実施例における側面
断面図、第３図は本発明の第２の実施例における要部正
面断面図、第４図は従来の燃焼装置の側面断面図であ
る。 14……混合室、15……炎口、17……二次空気室、18……
二次空気口、19……多孔板、20……ハニカム格子、21…
…整流板。1 is a schematic front sectional view of a combustion apparatus according to a first embodiment of the present invention, FIG. 2 is a side sectional view of a first embodiment of the present invention, and FIG. 3 is a second embodiment of the present invention. 4 is a side sectional view of a conventional combustion apparatus. FIG. 14 …… Mixing chamber, 15 …… Flame mouth, 17 …… Secondary air chamber, 18 ……
Secondary air port, 19 ... perforated plate, 20 ... honeycomb lattice, 21 ...
…rectifier.
Claims (2)
周囲に二次空気流路となる二次空気室と、前記炎口と二
次空気室とを連通し、二次空気を噴出させる二次空気口
を有するバーナ本体の前記二次空気口を上流に、多孔板
とハニカム格子を重ね合わせた整流板を、ハニカム格子
が下流側に位置するよう設けた燃焼装置。1. A secondary air chamber provided with a flame port on the downstream side of the mixing chamber, the secondary air chamber serving as a secondary air flow path around the mixing chamber, and the flame port and the secondary air chamber being communicated with each other. A combustor in which a flow regulating plate in which a porous plate and a honeycomb lattice are superposed is provided upstream of the secondary air port of the burner body having a secondary air port for ejecting the honeycomb so that the honeycomb lattice is located on the downstream side.
第１項記載の燃焼装置。2. The combustion apparatus according to claim 1, wherein the perforated plate is provided with pressure equalizing means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61304140A JPH0733901B2 (en) | 1986-12-19 | 1986-12-19 | Combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61304140A JPH0733901B2 (en) | 1986-12-19 | 1986-12-19 | Combustion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63156910A JPS63156910A (en) | 1988-06-30 |
| JPH0733901B2 true JPH0733901B2 (en) | 1995-04-12 |
Family
ID=17929523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61304140A Expired - Lifetime JPH0733901B2 (en) | 1986-12-19 | 1986-12-19 | Combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0733901B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02157514A (en) * | 1988-12-09 | 1990-06-18 | Matsushita Electric Ind Co Ltd | Low noise high load combustion device |
| JPH02147623U (en) * | 1989-05-10 | 1990-12-14 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5832248U (en) * | 1981-08-27 | 1983-03-02 | 株式会社ノーリツ | Air supply rectifier |
| JPS5883112A (en) * | 1981-11-12 | 1983-05-18 | Matsushita Electric Ind Co Ltd | Burner |
-
1986
- 1986-12-19 JP JP61304140A patent/JPH0733901B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63156910A (en) | 1988-06-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |