JP2577545Y2 - Low NOx combustion device - Google Patents
Low NOx combustion deviceInfo
- Publication number
- JP2577545Y2 JP2577545Y2 JP1992067058U JP6705892U JP2577545Y2 JP 2577545 Y2 JP2577545 Y2 JP 2577545Y2 JP 1992067058 U JP1992067058 U JP 1992067058U JP 6705892 U JP6705892 U JP 6705892U JP 2577545 Y2 JP2577545 Y2 JP 2577545Y2
- Authority
- JP
- Japan
- Prior art keywords
- flame
- holding plate
- burner
- low nox
- combustion device
- 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
Description
【０００１】[0001]
【産業上の利用分野】この考案は、低ＮＯx燃焼装置の
改良に関するものである。BACKGROUND OF THE INVENTION The present invention relates to an improvement in a low NOx combustion device.
【０００２】[0002]
【従来の技術】空気中のＮ2分は、特に概略１３００℃
以上の高温雰囲気にさらされると、容易に酸化してサー
マルＮＯxの生成量が急激に増加する。そのため、古く
からＮＯx発生量を少なくし得る燃焼装置が種々考えら
れており、代表的なものとしては、実開昭６０−１０５
９１２号公報に開示されているように、炎口の片側に保
炎板を立設した構成が知られている。2. Description of the Related Art The N2 content in air is approximately 1300 ° C.
When exposed to the above high temperature atmosphere, it is easily oxidized, and the amount of thermal NOx generated increases rapidly. For this reason, various combustion devices capable of reducing the amount of NOx generated have been considered for a long time.
As disclosed in Japanese Patent Publication No. 912, there is known a configuration in which a flame holding plate is provided upright on one side of a flame opening.
【０００３】[0003]
【考案が解決しようとする課題】ところで、上記のよう
に保炎板を立設すると、保炎板が燃焼熱を吸収して火炎
温度を低くするためにＮＯx発生量が減少するものの、
保炎板が高温となって熱歪する等、耐久性の点で問題を
生じる。さらに、炎口の直上にはフレームロッド等の挿
設物が設けられていることが殆どであるから、該挿設物
の赤熱に伴う輻射熱が特に鉛直下方の炎口周辺部の温度
を高めることにより、ヒビが入り易くなる等の不具合も
ある。この考案は上記した課題に鑑みなされたもので、
その目的とするところは、低ＮＯx化とバーナの耐久性
とを同時に達成できる低ＮＯx燃焼装置を提供すること
にある。When the flame stabilizing plate is erected as described above, the amount of NOx generated is reduced because the flame stabilizing plate absorbs combustion heat and lowers the flame temperature.
A problem arises in terms of durability, such as high temperature of the flame holding plate and thermal distortion. Furthermore, since an insert such as a frame rod is almost always provided immediately above the flame outlet, the radiant heat accompanying the red heat of the insert increases the temperature around the flame outlet particularly vertically below. As a result, there is a problem that cracks are easily formed. This invention was made in view of the above-mentioned problem,
It is an object of the present invention to provide a low-NOx combustion apparatus that can simultaneously achieve low NOx and burner durability.
【０００４】[0004]
【課題を解決するための手段】上記した目的を達成する
ために本考案は、バーナ上面の炎口を囲むように保炎板
が立設し、且つ炎口上にフレームロッド等の挿設物が配
設するものにおいて、保炎板の上端縁を外側に折り返す
と共に、挿設物の下方に位置するバーナ部分を覆うよう
に、保炎板を切り起こして遮熱部を形成した構成からな
る。In order to achieve the above-mentioned object, according to the present invention, a flame holding plate is erected so as to surround a flame port on an upper surface of a burner, and an inserted object such as a frame rod is provided on the flame port. In the arrangement, the upper end edge of the flame holding plate is turned outward, and the heat holding portion is formed by cutting and raising the flame holding plate so as to cover a burner portion located below the inserted object.
【０００５】[0005]
【作用】係る構成とすれば、保炎板が燃焼熱を吸収して
火炎温度を低下させるためＮＯx発生量が減少すること
に加え、保炎板の上端を折り返したことにより熱歪を有
効に防止でき、挿設物からの輻射熱がバーナに伝わるこ
とを遮熱部が阻止する等により、バーナの耐久性が向上
することとなる。According to this structure, the flame holding plate absorbs heat of combustion and lowers the flame temperature, so that the amount of NOx generated is reduced. In addition, the upper end of the flame holding plate is turned up to effectively reduce the heat distortion. This can prevent the radiant heat from the inserted object from being transmitted to the burner.
【０００６】[0006]
【実施例】以下、本考案の一実施例を図面により説明す
る。図１〜図３において、バーナ１は混合管２と噴出部
３とが加締めにて連接している。噴出部３の上面には長
尺な炎口４が設けられ、この炎口４を取り囲むように、
バーナ１の側面より上方に保炎板５が立設している。こ
の保炎板５の上端は、全周に亘って数ｍｍ程度外側に折
り返されている。さらに係る折り返しと共に、バーナ１
上面の一部を覆うように、保炎板５の適所を切り起こし
て遮熱部６が形成され、該遮熱部６の直上にフレームロ
ッド７や点火電極８といった挿設物が配設している。な
お、９は整流板、１０はバーナ１に燃料ガスを噴出する
ノズルである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 3, in a burner 1, a mixing pipe 2 and an ejection part 3 are connected by caulking. A long flame port 4 is provided on the upper surface of the jetting part 3.
A flame holding plate 5 stands upright from the side surface of the burner 1. The upper end of the flame-holding plate 5 is folded outward by several mm over the entire circumference. Burner 1
A heat shield portion 6 is formed by cutting and raising a suitable portion of the flame holding plate 5 so as to cover a part of the upper surface, and an inserted object such as a frame rod 7 or an ignition electrode 8 is disposed immediately above the heat shield portion 6. ing. Reference numeral 9 denotes a current plate, and reference numeral 10 denotes a nozzle for ejecting fuel gas to the burner 1.
【０００７】上記した構成において、ノズル１０から噴
出した燃料ガスは混合管２に流入し、一次空気と混合し
た後炎口４から流出して点火電極８により着火燃焼す
る。火炎はその側面が保炎板５と接することから、保炎
効果により吹き飛び等が抑制され、安定して燃焼する。
さらに、保炎板５は燃焼熱を吸収して火炎温度を低くす
る効果があるから、ＮＯx発生量が少なくなる。このＮ
Ｏxは、保炎板５が無い構造に比して２０％以上も低減
することを実験により確認している。In the above configuration, the fuel gas ejected from the nozzle 10 flows into the mixing pipe 2, mixes with the primary air, flows out from the flame port 4, and is ignited and burned by the ignition electrode 8. Since the side surface of the flame is in contact with the flame holding plate 5, the flame stabilizing effect suppresses blow-off and the like and stably burns.
Furthermore, since the flame holding plate 5 has an effect of lowering the flame temperature by absorbing the combustion heat, the amount of generated NOx is reduced. This N
It has been confirmed by experiments that Ox is reduced by 20% or more as compared with the structure without the flame holding plate 5.
【０００８】保炎板５は火炎と接することにより高温と
なるが、保炎板５からバーナ１に熱が逃げていくと共
に、高温の上端は折り返されているので熱歪しにくく、
長期の使用に十分耐える。さらに、火炎中に直接さらさ
れて赤熱するフレームロッド７や点火電極８は、その周
囲に多量の輻射熱を放出するが、鉛直下方に向かう輻射
熱は遮熱部６により吸収される。よって、バーナ１上面
が局所的に熱くなる事態を有効に防止できるから、ガス
漏れを起こすようなヒビも発生せず、安全性が向上す
る。The flame holding plate 5 becomes hot when it comes into contact with the flame. However, heat escapes from the flame holding plate 5 to the burner 1 and the upper end of the high temperature is folded back so that it is difficult to be thermally distorted.
Withstands long-term use. Furthermore, the flame rod 7 and the ignition electrode 8 which are directly exposed to the flame and glow red emit a large amount of radiant heat to the surroundings thereof, but the radiant heat directed vertically downward is absorbed by the heat shield portion 6. Therefore, it is possible to effectively prevent a situation in which the upper surface of the burner 1 is locally heated, so that cracks that cause gas leakage do not occur and safety is improved.
【０００９】[0009]
【考案の効果】以上に説明した通り本考案の低ＮＯx燃
焼装置は、保炎板の上端縁を外側に折り返すと共に、挿
設物の下方に位置するバーナ部分を覆うように、保炎板
を切り起こして遮熱部を形成しているので、ＮＯxの低
減と同時に保炎板が熱歪することを有効に防止でき、さ
らにバーナ上面の温度を高める挿設物からの輻射熱を遮
熱部が吸収するから、バーナにヒビが入るようなことが
なく、安全性が向上するといった顕著な効果を奏する。As described above, in the low NOx combustion apparatus of the present invention, the upper end edge of the flame holding plate is turned outward, and the flame holding plate is placed so as to cover the burner portion located below the inserted object. Since the heat shield is formed by cutting and raising, it is possible to effectively prevent the flame holding plate from being thermally distorted at the same time as reducing NOx, and furthermore, the heat shield prevents the radiant heat from the insert that raises the temperature of the upper surface of the burner. Because of the absorption, the burner is not cracked and has a remarkable effect of improving safety.
【図１】本考案の低ＮＯx燃焼装置に関する斜視図であ
る。FIG. 1 is a perspective view of the low NOx combustion device of the present invention.
【図２】本考案の低ＮＯx燃焼装置を説明する断面図で
ある。FIG. 2 is a cross-sectional view illustrating the low NOx combustion device of the present invention.
１ バーナ ４ 炎口 ５ 保炎板 ６ 遮熱部 ７ フレームロッド（挿設物） DESCRIPTION OF SYMBOLS 1 Burner 4 Flame opening 5 Flame holding plate 6 Heat shield 7 Frame rod (inserted object)
Claims (1)
設し、且つ炎口上にフレームロッド等の挿設物が配設す
るものにおいて、保炎板の上端縁を外側に折り返すと共
に、挿設物の下方に位置するバーナ部分を覆うように、
保炎板を切り起こして遮熱部を形成したことを特徴とす
る低ＮＯx燃焼装置。A flame stabilizing plate is erected so as to surround a flame hole on an upper surface of a burner, and an insert such as a frame rod is disposed on the flame hole. At the same time, so as to cover the burner part located below the inserted object,
A low NOx combustion device characterized by forming a heat shield by cutting and raising a flame holding plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992067058U JP2577545Y2 (en) | 1992-08-31 | 1992-08-31 | Low NOx combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992067058U JP2577545Y2 (en) | 1992-08-31 | 1992-08-31 | Low NOx combustion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0630610U JPH0630610U (en) | 1994-04-22 |
| JP2577545Y2 true JP2577545Y2 (en) | 1998-07-30 |
Family
ID=13333865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992067058U Expired - Lifetime JP2577545Y2 (en) | 1992-08-31 | 1992-08-31 | Low NOx combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2577545Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0419306U (en) * | 1990-06-11 | 1992-02-18 | ||
| JP3104612U (en) * | 2004-01-29 | 2004-10-07 | 亮 相道 | Simple trash can |
-
1992
- 1992-08-31 JP JP1992067058U patent/JP2577545Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0630610U (en) | 1994-04-22 |
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