JPS62238910A - Combustion device - Google Patents
Combustion deviceInfo
- Publication number
- JPS62238910A JPS62238910A JP61081332A JP8133286A JPS62238910A JP S62238910 A JPS62238910 A JP S62238910A JP 61081332 A JP61081332 A JP 61081332A JP 8133286 A JP8133286 A JP 8133286A JP S62238910 A JPS62238910 A JP S62238910A
- Authority
- JP
- Japan
- Prior art keywords
- primary
- combustion
- flame
- combustion chamber
- secondary air
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 77
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 36
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 abstract description 17
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 abstract description 17
- 239000000446 fuel Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000567 combustion gas Substances 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- 229910002089 NOx Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- RVRCFVVLDHTFFA-UHFFFAOYSA-N heptasodium;tungsten;nonatriacontahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[W].[W].[W].[W].[W].[W].[W].[W].[W].[W].[W] RVRCFVVLDHTFFA-UHFFFAOYSA-N 0.000 description 1
- 230000004202 respiratory function Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Gas Burners (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は室内の暖房等に供する燃焼装置の、燃焼性能の
向上に関するものである。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to improving the combustion performance of a combustion device used for room heating or the like.
従来の技術
従来のこの種の燃焼装置は第３図に示す。すなわち、複
数の一次炎口１を有する一次炎口部２と、この一次炎口
部２を覆う一次燃焼室３の上部に°二次炎口部４を設け
、−火燃焼室３内での一次燃焼は、燃料ノズル５より供
給される燃料と、一次空気供給口６より供給される一次
空気より燃焼が形成される。また二次燃焼は一次燃焼室
３内にて完全燃焼せずに残った未燃焼成分が、二次炎口
部４にて二次空気の供給をうけて燃焼を形成する。BACKGROUND OF THE INVENTION A conventional combustion apparatus of this type is shown in FIG. That is, a primary flame port part 2 having a plurality of primary flame ports 1 and a secondary flame port part 4 are provided in the upper part of the primary combustion chamber 3 that covers the primary flame port part 2. The primary combustion is caused by fuel supplied from the fuel nozzle 5 and primary air supplied from the primary air supply port 6. In the secondary combustion, unburned components remaining without being completely combusted in the primary combustion chamber 3 are supplied with secondary air at the secondary flame port 4 to form combustion.
（例えば、特開昭５０−１３８４４８号公報、特開昭５
２−１２０４２３号公報）
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従来の構成においては、燃焼
を一次、二次と二段に分割することによって、燃焼火炎
の温度が低下するとともに、一次燃焼により発生した活
性基による還元作用が生ずるため、窒素酸化物（ｒ’ｒ
ｏｘ）の発生量が減少する傾向にあったが、家庭暖房器
用燃焼装置としてはその量は依然として多く、実使用上
その有害性においては問題があった。また一次燃焼にて
発生する活性基は窒素酸化物（ＮＯｘ）総量を減少させ
る傾向にあるが、その作用によって一方では一酸化窒素
（Ｎｏ ）を、より有害とされる二酸化窒素（ＮＯ２）
に変換してしまうため、逆に二酸化窒素（ＮＯ２）の発
生量は増加する傾向にあり、二酸化窒素（ＮＯ２）によ
る呼吸機能への影響が問題視されていた。(For example, JP-A-50-138448, JP-A-5
2-120423) Problems to be Solved by the Invention However, in the conventional configuration as described above, by dividing combustion into two stages, primary and secondary, the temperature of the combustion flame decreases, and the primary Due to the reduction effect caused by the active groups generated by combustion, nitrogen oxides (r'r
Although the amount of ox) generated has tended to decrease, the amount is still large for combustion devices for home heaters, and there is a problem with its harmfulness in practical use. In addition, the active groups generated during primary combustion tend to reduce the total amount of nitrogen oxides (NOx);
On the contrary, the amount of nitrogen dioxide (NO2) generated tends to increase, and the influence of nitrogen dioxide (NO2) on respiratory function has been viewed as a problem.
本発明はかかる従来の問題点を解消するもので、窒素酸
化物（ＮＯｘ）、特に二酸化窒素（ＮＯ２）の発生量の
少なく安定した燃焼装置を提供することを目的とする。The present invention has been made to solve these conventional problems, and an object of the present invention is to provide a stable combustion device that generates a small amount of nitrogen oxides (NOx), particularly nitrogen dioxide (NO2).
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、複数
の小孔を有する一次炎口部と、この一次炎口部を覆う一
次燃焼室の上部に二次炎口部を設け、前記一次燃焼室内
に二次空気供給路を形成したものである。Means for Solving the Problems In order to solve the above-mentioned problems, the combustion apparatus of the present invention includes a primary flame port having a plurality of small holes, and a secondary combustion chamber in the upper part of the primary combustion chamber that covers the primary flame port. A flame port is provided, and a secondary air supply path is formed within the primary combustion chamber.
作 用 本発明は上記した構成によって、燃焼を一次。For production The present invention uses the above-described configuration to perform primary combustion.
二次と二段に分割するため、燃焼負荷が低下し燃焼火炎
温度が低くなる。またこのとき、一次燃焼室内に二次空
気供給路が形成しであるため、この二次空気供給路を介
して二次空気と一次燃焼室内の燃焼ガスが熱交換をおこ
なうため、二次空気の温度は著しく上昇し、一方、一次
燃焼室雰囲気温度ならびに燃焼火炎温度も著しく低下す
る。このことにより、一般に燃焼で発生する窒素酸化物
（ＮＯｘ）、そのほとんどは−酸化窒素（ＮＯ）である
が、そのＮｏの発生機構は、Ｚｅｌｄｏｕｉｃｈ機構と
呼ばれ（１）式によって表わされ、Ｎｏの発生機は温度
の因子Ｔに大きく作用される。Since it is divided into secondary and two-stage, the combustion load is reduced and the combustion flame temperature is lowered. Also, at this time, since a secondary air supply path is formed in the primary combustion chamber, heat exchange occurs between the secondary air and the combustion gas in the primary combustion chamber through this secondary air supply path, so that the secondary air The temperature increases significantly, while the primary combustion chamber ambient temperature and combustion flame temperature also decrease significantly. As a result, nitrogen oxides (NOx) generally generated during combustion, most of which are -nitrogen oxides (NO), the generation mechanism of No is called the Zeldouich mechanism and is expressed by equation (1), The generator of No is strongly influenced by the temperature factor T.
このため、−火燃焼における火炎温度低下により一次燃
焼におけるＮＯｘの発生量は著しく抑制される。また、
−火燃焼にて残った未燃焼成分の温度も抑制されるため
、二次燃焼における燃焼速度が低下し、二次火炎の温度
上昇が抑制され、二次燃焼にて生成するＮＯｘ量も著し
く減少する。Therefore, the amount of NOx generated during primary combustion is significantly suppressed due to the decrease in flame temperature during negative combustion. Also,
-The temperature of the unburned components remaining in the flame combustion is also suppressed, so the combustion speed in the secondary combustion is reduced, the temperature rise of the secondary flame is suppressed, and the amount of NOx generated in the secondary combustion is also significantly reduced. do.
一方、二酸化窒素（ＮＯ２）の生成速度は（２）式によ
って表わされ、
ｄ（ＮＯ２） ２
−− ｋ （Ｎｏ ） （０２） ・・・・・
・（２）ｔ
高温状態ではＮｏ生成方向へ、低温状態ではＮＯ２生成
方向となる。このため燃焼によって生じたＮＯがＮＯ２
へ変換するのを抑制するため（こは、高温状態で希釈し
て、低温化するのが最も良い方法である。ところで本構
成によると二次空気の温度は著しく上昇しており、二次
燃焼における火炎を急激に冷却することもなく、また高
温状態にて排気ガスを二次空気で希釈するためＮｏのＮ
Ｏ２への変換が著しく抑制でき、ＮＯ２生成量が著しく
減少する。On the other hand, the production rate of nitrogen dioxide (NO2) is expressed by equation (2), d(NO2) 2 -- k (No) (02)...
- (2) t In a high temperature state, the direction is to produce NO, and in a low temperature state, it is in the direction to produce NO2. Therefore, the NO produced by combustion becomes NO2
In order to suppress the conversion to No. 2 N is used to avoid rapid cooling of the flame and to dilute the exhaust gas with secondary air in high temperature conditions.
The conversion to O2 can be significantly suppressed, and the amount of NO2 produced is significantly reduced.
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図において、１１は複数の小孔１２を有した一次
炎口部で、その周囲は一次燃焼室１３に覆われている。Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In FIG. 1, reference numeral 11 denotes a primary flame nozzle having a plurality of small holes 12, the periphery of which is covered with a primary combustion chamber 13.
また一次炎口部１１の下部は予混合室１４となっており
、一次空気供給口１５より供給される一次空気と、燃料
ノズル１６より供給される燃料がこの予混合室１４にて
混合され、一次炎口部１１に供給される。一方、−火燃
焼室１３の上部には二次炎口部１７が設けてあり、この
−火燃焼室１３の内部にはパイプ状の二次空気供給路１
８が複数形成されている。Further, the lower part of the primary flame port 11 is a premixing chamber 14, and the primary air supplied from the primary air supply port 15 and the fuel supplied from the fuel nozzle 16 are mixed in this premixing chamber 14. It is supplied to the primary flame port 11. On the other hand, a secondary flame port 17 is provided in the upper part of the flame combustion chamber 13, and a pipe-shaped secondary air supply passage 1 is provided inside the flame combustion chamber 13.
A plurality of numbers 8 are formed.
上記構成において、一次空気供給ロ１５．燃料ノズル１
６より噴出した一次空気と燃料は、予混合室１４内にて
混合され、一次炎口部１１へと供給され、−火燃焼火炎
１９を形成する。この−火燃焼室１３内にて形成される
一次燃焼は主として一次空気による可燃限界以上、理論
空気量以下で燃焼する。さらに−火燃焼室１３内にて完
全に燃焼せず残った未燃焼成分は二次炎口部１７にて二
次空気の供給を受けて二次燃焼火炎２０を形成する。こ
の際二次空気の一部は二次空気供給路１８を通って供給
されるため、非常に高温となっている。このように二次
空気供給路１８が一次燃焼室１３内部に形成されている
ため、この二次空気供給路１８にて二次空気と一次燃焼
室１３内の燃焼ガスが熱交換し易くなり、二次空気の温
度は著しくと昇し、−火燃焼室１３内雰囲気温度や一次
火炎１９温度は著しく低下する。このことにより一次燃
焼にて発生するＮｏｘ（Ｎｏ）は火炎温度に大きく左右
されるためＮｏｘ（Ｎｏ）発生量は著しく低下する。ま
た−火燃焼にて残った未燃焼成分の温度上昇も抑制され
るため、二次燃焼における燃焼速度が低下し二次火炎２
０の温度上昇が抑制され、二次燃焼にて生成するＮ０ｘ
（Ｎｏｔも著しく減少する。In the above configuration, the primary air supply chamber 15. fuel nozzle 1
The primary air and fuel ejected from 6 are mixed in the premixing chamber 14 and supplied to the primary flame port 11 to form a -flame combustion flame 19. The primary combustion formed in this -fire combustion chamber 13 is mainly caused by primary air above the flammability limit and below the theoretical air amount. Further, the unburned components remaining without being completely combusted in the combustion chamber 13 are supplied with secondary air at the secondary flame port 17 to form a secondary combustion flame 20. At this time, a part of the secondary air is supplied through the secondary air supply path 18, and therefore has a very high temperature. Since the secondary air supply path 18 is formed inside the primary combustion chamber 13 in this way, the secondary air and the combustion gas in the primary combustion chamber 13 can easily exchange heat in this secondary air supply path 18. The temperature of the secondary air rises markedly, and the atmospheric temperature within the combustion chamber 13 and the temperature of the primary flame 19 drop markedly. As a result, the amount of Nox (No) generated during primary combustion is greatly affected by the flame temperature, so the amount of Nox (No) generated is significantly reduced. In addition, since the temperature rise of the unburned components remaining in the flame combustion is also suppressed, the combustion speed in the secondary combustion is reduced and the secondary flame 2
0x temperature rise is suppressed and NOx generated in secondary combustion
(Nots also decrease significantly.
一方、二次空気の温度は二次空気供給路１８にて著しく
上昇しているため、二次燃焼における火炎２０を急激に
、しかも部分的に冷却することがないため燃焼によって
発生したＮｏをＮＯ２へと変換することがほとんどなく
なり、Ｎｏ２生成量が著しく減少するとともに、−酸化
炭素（Ｃｏ）、、。On the other hand, since the temperature of the secondary air has risen significantly in the secondary air supply path 18, the flame 20 in the secondary combustion is not rapidly or partially cooled, so the NO generated by combustion is converted into NO2. There is almost no conversion to carbon oxide (Co), and the amount of No2 produced is significantly reduced.
等の有害排気ガスの発生も抑制でき、安定な燃焼となる
。It also suppresses the generation of harmful exhaust gases such as, resulting in stable combustion.
発明の効果
上記のように、本発明の燃焼装置によれば以下の効果が
得られる。Effects of the Invention As described above, the combustion apparatus of the present invention provides the following effects.
（１） 一次燃焼火炎、二次燃焼火炎、およびその雰
囲気の温度が低下することにより、−酸化窒素（Ｎｏ）
の発生量が著しく減少し、窒素酸化物（Ｎ Ｏ！ ）の
生成が著しく低下する。(1) By decreasing the temperature of the primary combustion flame, secondary combustion flame, and the atmosphere, -nitrogen oxide (No.
The production of nitrogen oxides (N O!) is significantly reduced.
（２）二次空気の温度が上昇するため、燃焼によって発
生した一酸化窒素（Ｎｏ）が、二次空気の影響を受けて
二酸化窒素（ＮＯ２）へと酸化されることがほとんどな
くなり、二酸化窒素（Ｎｏ２）の生成が著しく低下する
。(2) As the temperature of the secondary air increases, nitrogen monoxide (No) generated by combustion is hardly oxidized to nitrogen dioxide (NO2) under the influence of the secondary air, and nitrogen dioxide (No. 2) production is significantly reduced.
（３）燃焼が緩慢なため急激な燃焼反応を伴わないため
、燃焼騒音が著しく低下する。(3) Since combustion is slow and does not involve a sudden combustion reaction, combustion noise is significantly reduced.
（４）二次空気の温度が上昇するため、火炎の急激な冷
却を受けにくくなり、燃焼が安定し、−酸化炭素等の有
毒排出物の発生が抑制できる。(4) Since the temperature of the secondary air rises, the flame becomes less susceptible to rapid cooling, stabilizing combustion, and suppressing the generation of toxic emissions such as carbon oxide.
第１図は本発明の一実施例における燃焼装置の要部断面
図、第２図は同斜視図、第３図は従来の燃焼装置を示す
斜視図である。
１１・・・・・・一次炎口部、１３・・・・・・−火燃
焼室、１７・・・・・・二次炎口部、１８・・・・・・
二次空気供給路、１９・・・・・・一次火炎、２０・・
・・・・二次火炎。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名１１
−−−一氷炎口郁
ｔＳ−一−一次９！１焼皇
Ｉ７− 二次支ロ祁
１８− 二次空気供給路
第２図FIG. 1 is a sectional view of a main part of a combustion device according to an embodiment of the present invention, FIG. 2 is a perspective view of the same, and FIG. 3 is a perspective view of a conventional combustion device. 11...Primary flame port, 13...-fire combustion chamber, 17...Secondary flame port, 18...
Secondary air supply path, 19...Primary flame, 20...
...Secondary flame. Name of agent: Patent attorney Toshio Nakao and 1 other person11
---Ikyou Enokuchi tS-1-1st 9! 1 Shokuo I7- 2nd branch 18- Secondary air supply path Diagram 2
Claims (1)
う一次燃焼室の上部に二次炎口部を設け、前記−次燃焼
室内に二次空気供給路を形成し、一次燃焼室内での一次
燃焼は主として一次空気による可燃限界以上、理論空気
量以下で燃焼させる燃焼装置。A primary flame port has a plurality of small holes, and a secondary flame port is provided in the upper part of the primary combustion chamber that covers the primary flame port, and a secondary air supply path is formed in the secondary combustion chamber, and the primary combustion Indoor primary combustion is a combustion device that primarily uses primary air to burn the air above the flammability limit and below the theoretical air amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61081332A JPS62238910A (en) | 1986-04-09 | 1986-04-09 | Combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61081332A JPS62238910A (en) | 1986-04-09 | 1986-04-09 | Combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62238910A true JPS62238910A (en) | 1987-10-19 |
Family
ID=13743425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61081332A Pending JPS62238910A (en) | 1986-04-09 | 1986-04-09 | Combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62238910A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993019327A1 (en) * | 1992-03-26 | 1993-09-30 | Control Automation Limited | Secondary air addition to enhance combustion in semi-enclosed heating apparatus |
| CN102252327A (en) * | 2011-05-12 | 2011-11-23 | 王晶华 | Pressurization spraying premix burner core for roller kiln |
-
1986
- 1986-04-09 JP JP61081332A patent/JPS62238910A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993019327A1 (en) * | 1992-03-26 | 1993-09-30 | Control Automation Limited | Secondary air addition to enhance combustion in semi-enclosed heating apparatus |
| CN102252327A (en) * | 2011-05-12 | 2011-11-23 | 王晶华 | Pressurization spraying premix burner core for roller kiln |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2678529B2 (en) | Gas burner | |
| US5209066A (en) | Counter flow combustion chamber for a gas turbine engine | |
| JPS62238910A (en) | Combustion device | |
| JPS62255711A (en) | Combustion device | |
| JPS62238909A (en) | Combustion device | |
| JPH05126323A (en) | Low nox gas burner | |
| JP2667607B2 (en) | Structure of low NOx boiler | |
| JPH0116885Y2 (en) | ||
| JPS62255710A (en) | Combustion device | |
| JPH0777302A (en) | Low nitrogen oxide generating boiler | |
| JPS62255709A (en) | Combustion device | |
| JP3121151B2 (en) | Combustion burner and combustion method | |
| JPS59134403A (en) | Burner apparatus | |
| JPS6021606Y2 (en) | Low NO↓x heat sintering equipment | |
| JPH07110113A (en) | Combustion apparatus | |
| JPS58182005A (en) | Combustion method for low nox | |
| JPS62258909A (en) | Burner | |
| JPS6222725Y2 (en) | ||
| JPS58138906A (en) | Low nox combustion device | |
| JPS59134402A (en) | Burner apparatus | |
| JPS5912222A (en) | Burner device | |
| JPH05231620A (en) | Low-nox bunsen burner | |
| JPS62258907A (en) | Burner | |
| JPS6036522B2 (en) | boiler equipment | |
| JPS5912221A (en) | Burner device |