JPS6373005A - Low nox fan heater - Google Patents
Low nox fan heaterInfo
- Publication number
- JPS6373005A JPS6373005A JP21536486A JP21536486A JPS6373005A JP S6373005 A JPS6373005 A JP S6373005A JP 21536486 A JP21536486 A JP 21536486A JP 21536486 A JP21536486 A JP 21536486A JP S6373005 A JPS6373005 A JP S6373005A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- flame
- main
- combustion chamber
- temperature
- 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 claims abstract description 38
- 239000000446 fuel Substances 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 5
- 238000005192 partition Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 6
- 239000000567 combustion gas Substances 0.000 abstract description 3
- 239000003381 stabilizer Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は家庭用暖房器等の低ＮＯｘファンヒータに関す
るものである。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a low NOx fan heater for home heaters and the like.
従来の技術
従来、家庭用暖房器として用いられるファンヒータ等の
燃焼器の多くはブンゼン火炎を形成するバーナを用いる
ものであった。BACKGROUND OF THE INVENTION Conventionally, many combustors such as fan heaters used as household heaters have used burners that form Bunsen flames.
発明が解決しようとする問題点
しかるに従来のものにあっては燃焼室に形成されるブン
ゼン火炎の温度が高温となり、燃焼ガス中に発生するＮ
Ｏｘの址が多いという問題があった。Problems to be Solved by the Invention However, in the conventional method, the temperature of the Bunsen flame formed in the combustion chamber becomes high, and the N generated in the combustion gas increases.
There was a problem that there was a lot of Ox residue.
問題点を解決するための手段
本発明は上記問題点を解決するためになされたものであ
り、定常燃焼を行なう主燃焼室をセラミックよりなるハ
ニカム形状の多孔質部材Ａ、Ｂにより形成し、本体内部
の一次通路の出口部に備えたものである。Means for Solving the Problems The present invention has been made to solve the above problems, and the main combustion chamber for performing steady combustion is formed by honeycomb-shaped porous members A and B made of ceramic. This is provided at the outlet of the internal primary passage.
作用
このようにすることにより、多孔質部材Ａ、 Ｂを十分
予熱した後に一旦燃料の供給を停止させ。By doing this, the fuel supply is temporarily stopped after the porous members A and B have been sufficiently preheated.
そののち−次空気を増加させた通常の可燃限界以下の燃
料濃度の予混合気を一次通路に供給しても、この予混合
気は多孔質部材Ａの通過時に着火されて主燃焼室内に低
温の火炎を形成する。After that, even if a premixture with a fuel concentration below the normal flammability limit is supplied to the primary passage by increasing the amount of secondary air, this premixture will be ignited when passing through the porous member A, and the temperature will be low inside the main combustion chamber. form a flame.
実施例 以下、本発明の一実施例を図面に従って説明する。Example An embodiment of the present invention will be described below with reference to the drawings.
実施例の構成を示す第１図において、１は装置の本体で
内部に一次通路１４、二次通路１５、二型８、点火栓１
８を位置させるとともに、中心部位に燃料供給用のノズ
ル１９を臨ませ、また二次通路１５内に燃焼用ファン５
を位置させている。In FIG. 1 showing the configuration of the embodiment, 1 is the main body of the device, which includes a primary passage 14, a secondary passage 15, a type 2 8, and a spark plug 1.
8, a fuel supply nozzle 19 is placed in the center, and a combustion fan 5 is placed in the secondary passage 15.
is located.
６は室内空気循環用のファンで本体１内の下方に設けて
あり、室内空気２１ａ、２１ｂを吸引して後記燃焼排気
ガス２０ｃと合流させ、二次通路１５内を通すようにし
ている。１３は三次通路で、一次通路１４からの排気ガ
ス２０ｃと二次通路１５からの室内空気２１ｂとが混合
するところである。１２は温風吹出口で三次通路１３の
下流に位置してファン６近傍の本体外壁１７下部に設け
てあり、前記暖かい空気２２ａ、２２ｂが温風２２Ｃと
なって室内に吐出されるところである。２３は一次通路
１４の出口部で、任意の間隔を置いてセラミックよりな
るハニカム形状の多孔質部材Ａ９、ＢＩＯを設けてあり
、この両部材Ａ９、Ｂ１０と出口部２３の側壁によって
定常燃焼時の主燃焼室１１が形成されている。Reference numeral 6 denotes a fan for indoor air circulation, which is provided at the lower part of the main body 1, sucks indoor air 21a, 21b, merges it with combustion exhaust gas 20c (described later), and passes it through the secondary passage 15. 13 is a tertiary passage where exhaust gas 20c from the primary passage 14 and indoor air 21b from the secondary passage 15 are mixed. Reference numeral 12 denotes a hot air outlet, which is located downstream of the tertiary passage 13 and is provided at the lower part of the main body outer wall 17 near the fan 6, where the warm air 22a, 22b is turned into hot air 22C and is discharged into the room. 23 is the outlet of the primary passage 14, and honeycomb-shaped porous members A9 and BIO made of ceramic are provided at arbitrary intervals, and these members A9, B10 and the side wall of the outlet 23 provide a A main combustion chamber 11 is formed.
次に、本実施例の動作について述べる。Next, the operation of this embodiment will be described.
まず、本装置を起動する場合には燃焼器本体７の保炎器
８に通常のブンゼン火炎２４が形成出来るような燃料濃
度の予混合気２０ａを供給し点火栓１８により着火する
。保炎器８に形成された火炎２４は一次通路１４、前記
両壁４．１６及び前記両部材Ａ９、ＢＩＯ等を加熱する
。この燃焼状態をある時間保持すると両部材Ａ９．８Ｉ
Ｏは十分に予熱される。ここで、一旦燃料の供給を止め
、火炎２４を消化後燃焼用′ファン５により燃焼用空気
を増加させて燃料濃度を通常の可燃限界以下に下げた予
混合気２０ａを燃焼器本体７に供給する。First, when starting this device, a premixture 20a having a fuel concentration such that a normal Bunsen flame 24 can be formed is supplied to the flame stabilizer 8 of the combustor main body 7, and ignited by the ignition plug 18. The flame 24 formed in the flame stabilizer 8 heats the primary passage 14, the walls 4.16, the members A9, BIO, etc. If this combustion state is maintained for a certain period of time, both parts A9.8I
O is sufficiently preheated. Here, the fuel supply is temporarily stopped, and after extinguishing the flame 24, the combustion air is increased by the combustion fan 5, and the premixture 20a whose fuel concentration is lowered to below the normal flammability limit is supplied to the combustor main body 7. do.
この時、部材Ａ９の表面温度が高いため点火栓１８の点
火操作なしに部材Ａ９近傍の予混合気２゜ｂは部材Ａ９
通過時に加熱されて着火し、主燃焼室１１内に主火炎２
５を形成し、定常燃焼に移行する。この主火炎２５は通
常の可燃限界以下の燃料濃度によるＮＯｘを発生する温
度（１７００’Ｋ）以下の火炎温度の燃焼を持続する。At this time, since the surface temperature of member A9 is high, the premixture 2°b in the vicinity of member A9 does not ignite the spark plug 18.
When it passes, it is heated and ignited, and a main flame 2 is created in the main combustion chamber 11.
5 is formed and transitions to steady combustion. This main flame 25 maintains combustion at a flame temperature below the temperature at which NOx is generated (1700'K) due to a fuel concentration below the normal flammability limit.
Ｉす
第２ツリの実施例で・保炎器を取除き・か０・点火栓１
８を前記部材Ａ９、ＢＩＯの間に設けたものである。こ
の場合、装置の始動当初は可燃限界より少し上の燃料濃
度を持つ予混合気２０ａを燃焼器本体７に供給し、更に
この下流の予混合気２０ｂを部材Ａ９を介した主燃焼室
１１内で点火栓１８により着火するようにしている。し
かも、部材Ａ９の温度が一定温度になったところで前実
施例同様燃料濃度を可燃限界以下に切換えてＮ。In the example of the second tree, the flame holder is removed, or 0, and the spark plug 1
8 is provided between the member A9 and BIO. In this case, at the beginning of the startup of the device, a premixture 20a having a fuel concentration slightly above the flammability limit is supplied to the combustor main body 7, and this downstream premixture 20b is fed into the main combustion chamber 11 via the member A9. The ignition plug 18 is used to ignite the fire. Moreover, when the temperature of member A9 reaches a constant temperature, the fuel concentration is switched to below the flammable limit as in the previous embodiment.
Ｘ発生温度以下の火炎温度の燃焼を行なう。Carry out combustion with a flame temperature below the X generation temperature.
第３図は第２図の実施例に比し一次通路１４内から燃焼
器本体も取除き、複数の主燃焼室１１．１１ａを形成し
てあり、前例に比し各部材Ａ９、ＢＩＯｌＣｌｏａの配
列を９０″方向転換し、かつ１点火栓１８を部材Ａ９．
８１０間及び部材Ｂ１０、Ｃｌ０ａ間、またはどちらか
一方のみに設けだものである。In FIG. 3, compared to the embodiment shown in FIG. 2, the combustor main body is also removed from the primary passage 14 to form a plurality of main combustion chambers 11.11a. 90'' and insert one spark plug 18 into member A9.
810, and between members B10 and Cl0a, or only one of them.
かかる構成によると燃焼量の変化（燃焼負荷の変化）、
空気孔５からの室内空気２１ａの流入変化に対しても一
次通路１４内の混合気２０ａは速やかに予熱され、その
流速に応じての定常時の火炎は各部材Ａ９、ＢＩＯｌＣ
１０ａの予熱の程度が変化し燃焼に最適の主燃焼室１１
または主燃焼室１１ａの何れかでＮ Ｏｘ発生温度以下
の火炎温度の燃焼を行なう。With such a configuration, changes in combustion amount (changes in combustion load),
The air-fuel mixture 20a in the primary passage 14 is quickly preheated even when the indoor air 21a inflows from the air hole 5 changes, and the flame in the steady state according to the flow velocity of each member A9, BIOlC
The main combustion chamber 11 is optimized for combustion by changing the degree of preheating of 10a.
Alternatively, combustion is performed at a flame temperature below the NOx generation temperature in either the main combustion chamber 11a.
発明の効果
以上本発明によると、希薄気体燃料による低温燃焼が可
能となったので、燃焼ガス中に発生するＮＯｘの低減が
可能のみならず、一次通路内に流入した燃料、空気が速
やかに予熱され、灯油等の霧化燃料の凝縮も回避出来る
低ＮＯｘファンヒータを提供出来る。Effects of the Invention According to the present invention, low-temperature combustion using diluted gas fuel is possible, which not only makes it possible to reduce NOx generated in the combustion gas, but also quickly preheats the fuel and air flowing into the primary passage. Therefore, it is possible to provide a low NOx fan heater that can avoid condensation of atomized fuel such as kerosene.
第１図は本発明の一実施例による低Ｎ Ｏｘファンヒー
タの概略縦断面図、第２図及び第３図は同地の実施例に
よる概略縦断面図である。
１・・・本体、 ４・・・隔壁、 ６・・・ファン、
７・・・燃焼器本体、 ９・・・多孔質部材Ａ、１０・
・・多孔質部材Ｂ、 １１・・・主燃焼室、１３・・
・三次通路、 １４・・・一次通路。
１５・・・二次通路、 １６・・・内壁、１９・・
・ノズル、 ２０ｃ・・・燃焼排気ガス、２１ｂ・・
・室内空気。
２２ａ、２２ｂ・・・暖かい空気、 ２３・・・出口部
。FIG. 1 is a schematic longitudinal sectional view of a low NOx fan heater according to an embodiment of the present invention, and FIGS. 2 and 3 are schematic longitudinal sectional views of the same embodiment. 1... Main body, 4... Partition wall, 6... Fan,
7... Combustor main body, 9... Porous member A, 10.
... Porous member B, 11... Main combustion chamber, 13...
・Tertiary passage, 14...primary passage. 15...Secondary passage, 16...Inner wall, 19...
・Nozzle, 20c... Combustion exhaust gas, 21b...
・Indoor air. 22a, 22b...warm air, 23...exit section.
Claims (1)
て一次通路（１４）を形成し、この一次通路（１４）の
内部に燃料供給用のノズル（１９）を設けるとともに、
その出口部（２３）側に一次通路（１４）からの燃焼排
気ガス（２０ｃ）と室内空気（２１ｂ）が合流する二次
通路（１５）と、二次通路（１５）から得られた暖かい
空気（２２ａ）、（２２ｂ）が通過する三次通路（１３
）を形成したものにおいて、前記一次通路（１４）の出
口部（２３）にセラミックよりなる多孔質部材Ａ（９）
、Ｂ （１０）によって定常燃焼時の主燃焼室（１１）を形成
したことを特徴とする低ＮＯｘファンヒータ。[Claims] A primary passage (14) is formed inside the main body (1) by a partition wall (4), an inner wall (16), etc., and a fuel supply nozzle (19) is formed inside this primary passage (14). In addition to establishing
On the outlet (23) side thereof, there is a secondary passage (15) where combustion exhaust gas (20c) from the primary passage (14) and indoor air (21b) merge, and warm air obtained from the secondary passage (15). (22a), (22b) pass through the tertiary passage (13
), a porous member A (9) made of ceramic is provided at the outlet portion (23) of the primary passageway (14).
, B (10) to form a main combustion chamber (11) during steady combustion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21536486A JPS6373005A (en) | 1986-09-12 | 1986-09-12 | Low nox fan heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21536486A JPS6373005A (en) | 1986-09-12 | 1986-09-12 | Low nox fan heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6373005A true JPS6373005A (en) | 1988-04-02 |
Family
ID=16671067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21536486A Pending JPS6373005A (en) | 1986-09-12 | 1986-09-12 | Low nox fan heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6373005A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0350032A2 (en) * | 1988-07-08 | 1990-01-10 | Nippon Chemical Plant Consultant Co., Ltd. | Combustion apparatus |
| US5203690A (en) * | 1988-07-08 | 1993-04-20 | Nippon Chemical Plant Consultant Co., Ltd. | Combustion apparatus |
-
1986
- 1986-09-12 JP JP21536486A patent/JPS6373005A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0350032A2 (en) * | 1988-07-08 | 1990-01-10 | Nippon Chemical Plant Consultant Co., Ltd. | Combustion apparatus |
| US5203690A (en) * | 1988-07-08 | 1993-04-20 | Nippon Chemical Plant Consultant Co., Ltd. | Combustion apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH10501056A (en) | Ultra low NOx burner | |
| TWI661157B (en) | Radiant burner and method of treating an effluent gas stream from a manufacturing process tool | |
| EP0643267B1 (en) | Premixed gas burning method and combustor | |
| JP2002332870A (en) | Method for igniting thermal turbo machinery | |
| JPS6373005A (en) | Low nox fan heater | |
| JPH0633754B2 (en) | Engine warm-up device | |
| JP3873119B2 (en) | In-cylinder swirl combustor | |
| JPH05157211A (en) | Catalyst combustion device | |
| JPS62297615A (en) | Burning device | |
| RU2227247C2 (en) | Device for fuel combustion | |
| JP2561911Y2 (en) | Premixed gas burner | |
| JPH02254210A (en) | Heat accumulating type radiant tube burner | |
| JPH0828821A (en) | Radiant tube burner equipment producing little nitrogen oxide, and burning method thereof | |
| JPS63279010A (en) | Burning equipment | |
| JPS602425Y2 (en) | liquid fuel combustion equipment | |
| JPS6335227Y2 (en) | ||
| JPS63210507A (en) | Burner | |
| JPS59145443A (en) | Gas space heater | |
| JPH0615255Y2 (en) | Water heater | |
| JP2655939B2 (en) | Catalytic combustion device | |
| JPH03263503A (en) | Low nitrogen oxide burner | |
| JPH0464809A (en) | Gas fuel combustion device | |
| JPS6326808B2 (en) | ||
| JPH03158610A (en) | Burner | |
| JPH01114606A (en) | Burner |