JPH04198618A - Catalytic combustion apparatus - Google Patents
Catalytic combustion apparatusInfo
- Publication number
- JPH04198618A JPH04198618A JP33541190A JP33541190A JPH04198618A JP H04198618 A JPH04198618 A JP H04198618A JP 33541190 A JP33541190 A JP 33541190A JP 33541190 A JP33541190 A JP 33541190A JP H04198618 A JPH04198618 A JP H04198618A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst body
- combustion
- air
- fuel
- 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
- 238000007084 catalytic combustion reaction Methods 0.000 title claims description 14
- 239000003054 catalyst Substances 0.000 claims abstract description 65
- 239000000446 fuel Substances 0.000 claims abstract description 57
- 238000002485 combustion reaction Methods 0.000 claims abstract description 52
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 abstract description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 abstract description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 229910000510 noble metal Inorganic materials 0.000 abstract description 2
- 229910052763 palladium Inorganic materials 0.000 abstract description 2
- 229910052697 platinum Inorganic materials 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 19
- 238000009834 vaporization Methods 0.000 description 10
- 230000008016 vaporization Effects 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
Landscapes
- Control Of Combustion (AREA)
- Spray-Type Burners (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、触媒燃焼装置に関し、特にガス燃料あるい
は気化させた液体燃料を燃焼用空気と共に触媒体に供給
し、その触媒体上において触媒燃焼を行わせ、発生する
熱量を暖房等に応用するものに関する。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a catalytic combustion device, and in particular, gas fuel or vaporized liquid fuel is supplied to a catalyst body together with combustion air, and catalytic combustion is performed on the catalyst body. This invention relates to a device that uses the generated heat for heating, etc.
［従来の技術〕
第４図は、例えば特開昭６０−１７５９１９号公報に示
された従来の触媒燃焼装置を示す断面図である。[Prior Art] FIG. 4 is a sectional view showing a conventional catalytic combustion device disclosed in, for example, Japanese Patent Application Laid-Open No. 175919/1982.
図において、触媒体Ａ ＋１１及び触媒体Ｂ（２）は円
筒形をした燃焼筒（３）の内部にその周囲を断熱材（４
）に覆われ間隙（５）を設けて設置されている。In the figure, catalyst A +11 and catalyst B (2) are placed inside a cylindrical combustion cylinder (3) and surrounded by a heat insulating material (4).
) and installed with a gap (5).
その間隙（５）には熱電対Ａ（６）と点大ヒータ（７）
が設置されている。触媒体Ｂ（２）の下方には整流板（
８）が置かれ、その中央部に熱電対Ｂ（９）がその先端
を覗かせている。燃焼筒（３）の下部は燃料通気孔（１
０）を中央部に開けた底板（！１）を構成し、液体燃料
気化室（１２）がこれに接続している。液体燃料気化室
（１２）の中央には、皿型をしており内部に抵抗線を入
れたセラミック蒸発皿（１３）が置かれており、このセ
ラミック蒸発皿（１３）に液体燃料を供給するための液
体燃料供給管（１４）が取り付けられている。この液体
燃料気化室（１２）の下部には、燃焼空気を供給する空
気供給管（１５）が接続されている。In the gap (5) is a thermocouple A (6) and a large point heater (7).
is installed. Below the catalyst B (2) is a rectifier plate (
8) is placed, and a thermocouple B (9) has its tip peeking out at its center. At the bottom of the combustion tube (3) is a fuel vent (1).
0) constitutes a bottom plate (!1) with an opening in the center, and a liquid fuel vaporization chamber (12) is connected to this. In the center of the liquid fuel vaporization chamber (12), there is placed a ceramic evaporation dish (13) which is shaped like a saucer and has a resistance wire inside, and liquid fuel is supplied to this ceramic evaporation dish (13). A liquid fuel supply pipe (14) is attached for the purpose. An air supply pipe (15) for supplying combustion air is connected to the lower part of the liquid fuel vaporization chamber (12).
次に動作について説明する。まず液体燃料気化室（１２
）内のセラミック蒸発１１１］ ｆ１３）に１を流が流
れ、その表面温度が所定の温度に達すると送風ファン（
図示せず）が回転し、同時に、点大ヒータ（７）に通電
される。数秒遅れて液体燃料を送り込むためのｔＭｉポ
ンプ（図示せず）が動き、液体燃料供給管（１４）を通
り、セラミック蒸発皿（１３）に燃料が供給され、その
面上において蒸発する。蒸発した液体燃料は空気供給管
（１５）から供給された燃焼空気と共に混合気となり、
燃料通気孔００）を通り抜け、整流板（８）により均一
に整流され、触媒体Ａ（１）、触媒体Ｂ（２）に供給さ
れる。点大ヒータ（７）により混合気に着火されると触
媒体Ｂ（２）の後流側表面に炎が形成される。この時の
空気比（＝供給空気量／理論空気りはｌＯ〜１．５の着
火しやすい条件にしておく。しばらくすると炎により触
媒体Ｂ（２）が徐々に加熱されて、触媒燃焼へ移行し始
める。従って、触媒体Ｂ（２）表面上の炎はなくなり、
定常燃焼に移行する。Next, the operation will be explained. First, the liquid fuel vaporization chamber (12
) Ceramic evaporation 111] f13) flows through 1, and when its surface temperature reaches a predetermined temperature, the blower fan (
(not shown) rotates, and at the same time, the large point heater (7) is energized. After a delay of several seconds, a tMi pump (not shown) for feeding liquid fuel is activated, and the fuel is supplied to the ceramic evaporation dish (13) through the liquid fuel supply pipe (14) and evaporated on its surface. The evaporated liquid fuel becomes a mixture with the combustion air supplied from the air supply pipe (15),
The fuel passes through the fuel vent 00), is uniformly rectified by the rectifying plate (8), and is supplied to the catalyst body A (1) and the catalyst body B (2). When the air-fuel mixture is ignited by the large-spot heater (7), a flame is formed on the downstream surface of the catalyst body B (2). At this time, the air ratio (=supplied air amount/theoretical air ratio) is set to conditions that facilitate ignition, such as lO~1.5. After a while, the catalyst body B (2) is gradually heated by the flame, and the transition to catalytic combustion begins. Therefore, the flame on the surface of catalyst B (2) disappears,
Transition to steady combustion.
点火時に、熱電対Ａ（６）が温度上昇を感知すれば、触
媒体Ｂ（２）の表面に炎が形成されたと判断する。定常
燃焼時においては、熱電対Ｂ（９）によって燃焼状態の
変化を検知する。つまり、Ａ／Ｆ（＝空気／燃料比）が
大きくなると、触媒体Ｂ［２）が冷やされ上流面からの
放射熱量が減り熱電対Ｂ（９）の温度が下がり、また逆
にＡ／Ｆが小さくなると上流面の温度が上がるために逆
火して整流板（８）上に炎を形成するようになり熱電対
Ｂ（９）の温度が上昇するというものである。If thermocouple A (6) senses a temperature rise at the time of ignition, it is determined that a flame has been formed on the surface of catalyst body B (2). During steady combustion, changes in the combustion state are detected by thermocouple B (9). In other words, when A/F (=air/fuel ratio) increases, catalyst B [2] is cooled, the amount of heat radiated from the upstream surface is reduced, and the temperature of thermocouple B (9) decreases, and conversely, the A/F As the temperature decreases, the temperature on the upstream side increases, causing backfire and forming a flame on the current plate (8), causing the temperature of thermocouple B (9) to rise.
［発明が解決しようとする課ＩＩ］
従来の触媒燃焼装置は上記のように構成されており、触
媒体の上流側に設置した熱電対でＡ／Ｆの変化は検知で
きるが、その場合に空気の供給量が変化したのか燃料の
供給量が変化したのかはわからないという問題点があっ
た。即ち、触媒体の上流面の温度は空気量によっても変
化するし、燃焼量によっても変化するので５熱電対の温
度が下がった原因が空気量の増加か燃焼量の低下か判断
することができず、適切な調節をすることができないと
いう問題点があった。[Problem II to be solved by the invention] A conventional catalytic combustion device is configured as described above, and changes in A/F can be detected with a thermocouple installed upstream of the catalyst, but in that case, There was a problem in that it was unclear whether the amount of fuel supplied had changed or the amount of fuel supplied had changed. In other words, the temperature on the upstream surface of the catalyst varies depending on the amount of air and the amount of combustion, so it is possible to determine whether the reason for the temperature drop in thermocouple 5 is an increase in the amount of air or a decrease in the amount of combustion. However, there was a problem in that it was not possible to make appropriate adjustments.
この発明は上記のような問題点を解消するためになされ
たもので、空気量と燃焼量の両方を各々分離して１１１
ｉｉｌｌできる触媒燃焼装置を得ることを目的とする。This invention was made to solve the above-mentioned problems, and it separates both the air amount and the combustion amount, and
The purpose of the present invention is to obtain a catalytic combustion device that can
［課題を解決するための手段］
この発明に係る触媒燃焼装置は、ハニカム形状の触媒体
、この触媒体に燃焼用空気を供給する送風機、触媒体に
燃料を供給する燃料供給装置、触媒体に達した燃焼用空
気と燃料との混合気に点火する点火材、触媒体の内部の
混合気の流れ方向に間隔をあけて設けた複数の感熱部、
感熱部の温度を検出する温度検出装置、及び温度検出装
置からの出力信号を演算して送風機と燃料供給装置を制
御する制御装置を備え、空気量と燃焼量が所定値になる
ように構成したものである。[Means for Solving the Problems] A catalytic combustion device according to the present invention includes a honeycomb-shaped catalyst body, a blower that supplies combustion air to the catalyst body, a fuel supply device that supplies fuel to the catalyst body, and a catalyst body that supplies combustion air to the catalyst body. An ignition material that ignites the mixture of combustion air and fuel that has arrived, a plurality of heat-sensitive parts provided at intervals in the flow direction of the mixture inside the catalyst body,
It is equipped with a temperature detection device that detects the temperature of the heat-sensitive part, and a control device that calculates the output signal from the temperature detection device to control the blower and fuel supply device, and is configured so that the amount of air and combustion amount are set to predetermined values. It is something.
［作用］
この発明においては、触媒体内に設置した複数個の温度
検出装置により触媒体の流れ方向の温度分布を検知し、
この温度分布に応じて燃料供給装置と送風機を制御して
、供給する燃料と空気を調節し、空気量と燃焼量が所定
値になるように制御している。[Operation] In this invention, the temperature distribution in the flow direction of the catalyst body is detected by a plurality of temperature detection devices installed inside the catalyst body,
The fuel supply device and the blower are controlled according to this temperature distribution to adjust the amount of fuel and air to be supplied so that the amount of air and the amount of combustion become predetermined values.
［実施例］
以下、この発明の一実施例による触媒燃焼装置を第１図
を用いて説明する。第１図において、従来装置と同一符
号は同一、または相当する部分を示している。ここで、
触媒体（２）はハニカム形状のセラミック（例えばコー
ジェライトやアルミナなど）に白金やパラジウムなどの
貴金属を担持させたものが代表的である。また、点火材
（７）は点火用置換であり、さらに、（５１）〜（５３
）は触媒体（２）の内部に設置された熱電対Ａ−Ｃであ
り、触媒体（２）の内部を流れる混合気の流れ方向に間
隔をあけて設けられており、それぞれ触媒の人口部、中
部、出口部の温度を検知する。 ［５４１は熱電対Ａ（
５１１，８（５２１，Ｃｆ５３１の出力を処理する温度
検出装置、（５５）は温度検出装ｆｆｔ １５４１から
の出力信号により燃料供給用の電磁ポンプ（５６）と燃
焼空気供給用の送風ＩＩ（５７１を制御する制御装置で
ある。 （５１１１は燃料タンク、（５９）は液体燃料
気化室（１２）を加熱するヒータ、（６０）は噴霧ノズ
ルで、送風機（５７）から供給される燃焼用空気を高速
で噴出する。[Example] A catalytic combustion apparatus according to an example of the present invention will be described below with reference to FIG. In FIG. 1, the same reference numerals as in the conventional device indicate the same or corresponding parts. here,
The catalyst body (2) is typically a honeycomb-shaped ceramic (for example, cordierite, alumina, etc.) on which a noble metal such as platinum or palladium is supported. In addition, the ignition material (7) is a substitute for ignition, and furthermore, (51) to (53)
) are thermocouples A-C installed inside the catalyst body (2), and are spaced apart from each other in the flow direction of the air-fuel mixture flowing inside the catalyst body (2). , detects the temperature of the middle and outlet parts. [541 is thermocouple A (
Temperature detection device (55) processes the output of temperature detection device fft 1541, which processes the output of 511, 8 (521, Cf531). (5111 is a fuel tank, (59) is a heater that heats the liquid fuel vaporization chamber (12), and (60) is a spray nozzle that blows the combustion air supplied from the blower (57) at high speed. It erupts.
上記のように構成された触媒燃焼装置においては、ヒー
タ（５９）に通電されて液体燃料気化室（１２）が所定
の温度（通常的２５０〜３００℃）まで加熱されると送
風機（５７）が回転し、数秒後に電磁ポンプ（５６）が
作動する。！磁ポンプ（５６）が作動することで燃料は
燃料タンク（５８）から液体燃料供給管（１４）を介し
て液体燃料気化室（１２）に供給され、送風＊ （５７
）により送られる燃焼用空気は空気供給管（！５）を介
して噴霧ノズル（６０）から液体燃料気化室（１２）に
供給される。送出された液体燃料は、加熱された液体燃
料気化室（１２）の内壁で気化し、燃焼用空気と混合し
て混合気となる。この混合気は燃料通気孔（１０）に集
められることにより濃度の均一化が図られ、整流板（８
）により速度分布も均一になる。触媒体（２）に達した
混合気は点火用電極（７）により点火され、触媒体（２
）の後流側表面に火炎が形成される。この際、正常な着
火が行われて火炎が形成された場合には６熱電対Ｃｆ５
３１が触媒体（２）の後流側の温度上昇を検知し、点火
用Ｓ極（７）の放電を終了する６また、燃料供給後しば
らく経通しても熱電対ＣＦ５３）で温度の上昇を検出で
きず、触媒体（２）の温度が上がらない場合には、着火
不良と判断して燃焼器の作動を中止する８着火後、触媒
体（２）は火炎より受熱して次第に温度が上昇し、燃焼
は順次触媒体（２）内で進行するようになり、触媒体（
２）の表面上の火炎はなくなり定常燃焼に移行する・。In the catalytic combustion device configured as described above, when the heater (59) is energized and the liquid fuel vaporization chamber (12) is heated to a predetermined temperature (typically 250 to 300°C), the blower (57) is turned on. The electromagnetic pump (56) is activated after a few seconds of rotation. ! When the magnetic pump (56) operates, fuel is supplied from the fuel tank (58) to the liquid fuel vaporization chamber (12) via the liquid fuel supply pipe (14), and air is blown* (57
) is supplied to the liquid fuel vaporization chamber (12) from the spray nozzle (60) via the air supply pipe (!5). The delivered liquid fuel is vaporized on the inner wall of the heated liquid fuel vaporization chamber (12) and mixed with combustion air to form an air-fuel mixture. This air-fuel mixture is collected in the fuel vent (10) to make the concentration uniform, and the current plate (8)
) makes the velocity distribution uniform. The air-fuel mixture that has reached the catalyst body (2) is ignited by the ignition electrode (7), and the mixture reaches the catalyst body (2).
) a flame is formed on the downstream surface of the At this time, if normal ignition occurs and a flame is formed, 6 thermocouples Cf5
31 detects the temperature rise on the downstream side of the catalyst body (2) and terminates the discharge of the ignition S pole (7). If it cannot be detected and the temperature of the catalyst body (2) does not rise, it is determined that ignition is defective and the combustor operation is stopped.8 After ignition, the catalyst body (2) receives heat from the flame and the temperature gradually rises. However, combustion begins to progress in the catalyst body (2) in sequence, and the catalyst body (
2) The flame on the surface disappears and the combustion shifts to steady state.
第２図は定常燃焼時の触媒体（２）の流れ方向温度分布
の例である。横軸に触媒体（２）の内部を流れる混合気
の流れ方向の距離を示し、縦軸に触媒体（２）の温度（
相対値）を示している。空気比が小さな場合（１゜０〜
３０程度）は第２図の曲線■のように上流側（入口部）
の温度が高くなり、この場合は安定した燃焼が継続して
、未燃の炭化水素（Ｈ，Ｃ，）や−酸化炭素（Ｃｏ）は
排出されない、空気比が大きく曲線■の温度分布になる
場合は吹き消え（触媒温度が低下して燃焼が継続されな
くなること）が起きやすく、Ｈ，ＣやＣＯの排出もある
０曲線■の温度分布ではＨ，ＣやＣＯの排出はないもの
の、空気量の少しの増加で曲線■の分布になりやすい、
従って定常燃焼中は曲線■の温度分布になることが望ま
しい。FIG. 2 is an example of the flow direction temperature distribution of the catalyst body (2) during steady combustion. The horizontal axis shows the distance in the flow direction of the air-fuel mixture flowing inside the catalyst (2), and the vertical axis shows the temperature (2) of the catalyst (2).
relative value). When the air ratio is small (1°0~
30) is on the upstream side (inlet) as shown by curve ■ in Figure 2.
In this case, stable combustion continues, unburned hydrocarbons (H, C,) and -carbon oxide (Co) are not emitted, and the air ratio is large, resulting in a temperature distribution as shown by curve ■. In this case, blowout (catalyst temperature drops and combustion is no longer continued) is likely to occur, and H, C, and CO are also emitted.In the temperature distribution of 0 curve ■, there is no H, C, and CO emitted, but the air A small increase in the amount tends to result in a curve ■ distribution,
Therefore, it is desirable that the temperature distribution be as shown by curve (2) during steady combustion.
第２図の曲線■の時の熱電対Ａ （５１１〜Ｃ（５３１
の出力はＡ＞Ｂ＞Ｃであり、曲線■、曲線■ではそれぞ
れＢ＞Ａ＞Ｃ，Ｃ＞Ｂ＞Ａとなる。そこで、温度検出装
置（５４）で熱電対Ａ ＋５１１〜Ｃ（５３１の出力を
比較して、常時Ａ＞Ｂ＞Ｃとなるようにする。Thermocouple A (511 to C (531
The output is A>B>C, and for curves ■ and ■, B>A>C and C>B>A, respectively. Therefore, the temperature detection device (54) compares the outputs of thermocouples A+511 to C (531) so that A>B>C always holds.
触媒体（２）は熱容量が大きいために、空気置を減少さ
せてから温度分布が元に戻るまでには時間がかかるので
、温度分布が変化した時には早めに対策を講じる必要が
ある。すなわち、何かの原因で空気量が増加した場合、
曲線■の温度分布になった時に空気置を変えるのではな
く、■の温度分布になった時点で送風機（５７）の回転
数を変えて空気量を減少させる制御をする。さらに送風
機（５７）の回転数を減らしても曲線■にならず、曲線
■のままであるか曲線■の温度分布になるような場合に
は、触媒の酸化性能が劣化していると判断して燃焼器の
作動を中止する。Since the catalyst body (2) has a large heat capacity, it takes time for the temperature distribution to return to its original state after reducing the air supply, so it is necessary to take measures as soon as possible when the temperature distribution changes. In other words, if the amount of air increases for some reason,
Instead of changing the air position when the temperature distribution reaches the curve (■), control is performed to reduce the amount of air by changing the rotational speed of the blower (57) when the temperature distribution reaches the curve (2). Furthermore, if the temperature distribution does not change to the curve ■ even if the rotation speed of the blower (57) is reduced, but the temperature distribution remains as the curve ■ or becomes the temperature distribution as shown in the curve ■, it is determined that the oxidation performance of the catalyst has deteriorated. combustor operation.
一方、燃焼量が変化した場合には、第３図にように触媒
体（２）の全体の温度レベルが変化する。On the other hand, when the combustion amount changes, the overall temperature level of the catalyst body (2) changes as shown in FIG.
第３図も横軸に触媒体（２）の内部を流れる混合気の流
れ方向の距離を示し、縦軸に触媒体（２）の温度（相対
値）を示している。触媒燃焼装置においては、燃焼量が
増加しすぎて触媒体（２）の入口部の温度が耐熱温度以
上になると触媒の酸化性能が劣化する。一方、燃焼量が
減少しすぎると触媒体（２）が酸化性能を発揮できなく
なるまで温度が低下して、未燃Ｈ，ＣやＣＯを排出した
り、吹き消えたりする。従って、この実施例では触媒体
（２）の温度をある範囲に保つように、例えば熱電対Ａ
（５１１の出力をモニターして、制御装置（５５）で
電磁ポンプ（５６）を制御する。In FIG. 3, the horizontal axis also shows the distance in the flow direction of the air-fuel mixture flowing inside the catalyst body (2), and the vertical axis shows the temperature (relative value) of the catalyst body (2). In a catalytic combustion device, if the amount of combustion increases too much and the temperature at the inlet of the catalyst body (2) exceeds the allowable temperature, the oxidation performance of the catalyst will deteriorate. On the other hand, if the combustion amount decreases too much, the temperature will drop until the catalyst body (2) can no longer exhibit its oxidizing performance, and unburned H, C, and CO will be discharged or blown out. Therefore, in this embodiment, in order to maintain the temperature of the catalyst body (2) within a certain range, for example, a thermocouple A
(The output of 511 is monitored and the electromagnetic pump (56) is controlled by the control device (55).
このように、この実施例では、触媒体（２）内の混合気
の流れ方向の温度分布を検出し、この温度と空気比の関
係、及び温度と燃焼蓋の関係に基いて、空気比と燃焼蓋
が所定値になるように１１１１６１゜ているので、空気
量と燃焼量の両方を各々分離して調節でき、定常燃焼時
及び着火時の燃焼検知も行える。In this way, in this embodiment, the temperature distribution in the flow direction of the air-fuel mixture in the catalyst body (2) is detected, and the air ratio and the combustion lid are determined based on the relationship between this temperature and the air ratio, and the relationship between the temperature and the combustion lid. Since the combustion lid is set at a predetermined angle of 111161°, both the amount of air and the amount of combustion can be adjusted separately, and combustion can also be detected during steady combustion and during ignition.
なお、上記実施例では熱電対を３本設置したものを示し
たが、その数を４本以上にしてもよい。In the above embodiment, three thermocouples were installed, but the number may be four or more.
また、熱電対が２本でも燃焼状態の検知は可能であるが
、その場合は第２図に示した触媒体の温度分布を詳細に
知ることができないため、熱電対を３本使用する時より
燃焼状態の制御が遅れる場合もある。Also, although it is possible to detect the combustion state with two thermocouples, in that case it is not possible to know the temperature distribution of the catalyst body in detail as shown in Figure 2, so it is more difficult to detect the combustion state than with three thermocouples. Control of the combustion state may be delayed.
上記実施例では液体燃料を用いた場合について示したが
、ガス燃料を用いても同様であることはいうまでもない
。Although the above embodiments have been described using liquid fuel, it goes without saying that the same applies to gas fuel.
［発明の効果］
以上のように、この発明によれば、ハニカム形状の触媒
体、この触媒体に燃焼用空気を供給する送風機、触媒体
に燃料を供給する燃料供給装置、触媒体に達した燃焼用
空気と燃料との混合気に点火する点火材、触媒体の内部
の混合気の流れ方向に間隔をあけて設けた複数の感熱部
５この感熱部の温度を検出する温度検出装置、及びこの
温度検出装置からの出力信号を演算して送風機と燃料供
給装置を制御する制御装置を備え、空気量と燃焼量が所
定値になるようにしたので、定常燃焼時の空気比及び燃
焼量の制御ができ、さらに着火時の燃焼検知も行える効
果がある。[Effects of the Invention] As described above, according to the present invention, a honeycomb-shaped catalyst body, a blower for supplying combustion air to the catalyst body, a fuel supply device for supplying fuel to the catalyst body, and a catalyst body are provided. An ignition material for igniting a mixture of combustion air and fuel, a plurality of heat sensitive parts 5 provided at intervals in the flow direction of the mixture inside the catalyst body, a temperature detection device for detecting the temperature of the heat sensitive parts, and Equipped with a control device that calculates the output signal from this temperature detection device to control the blower and fuel supply device, so that the air amount and combustion amount become predetermined values, so that the air ratio and combustion amount during steady combustion can be adjusted. It has the advantage of being able to be controlled and also detect combustion when ignited.
第１図はこの発明の一実施例による触媒燃焼装置を示す
断面図、第２図は空気比による触媒体の温度分布の違い
を示すグラフ、第３図は燃焼量による触媒体の温度分布
の違いを示すグラフ、第４図は従来の触媒燃焼装置を示
す断面図である。
（２）・・・触媒体、（＋２）・・・液体燃料気化室、
（５１）〜（５３）・・・熱雷対、（５４１・・・温度
検出装置、（５５）・・・制御装置、（５６）・・・電
磁ポンプ、（５７）・・・送風機。
なお、図中、同一符号は同一、又は相当部分を示す。Fig. 1 is a cross-sectional view showing a catalytic combustion device according to an embodiment of the present invention, Fig. 2 is a graph showing the difference in temperature distribution of the catalyst body depending on the air ratio, and Fig. 3 is a graph showing the temperature distribution of the catalyst body depending on the combustion amount. A graph showing the difference, FIG. 4 is a sectional view showing a conventional catalytic combustion device. (2)...catalyst body, (+2)...liquid fuel vaporization chamber,
(51) to (53)... thermal lightning pair, (541... temperature detection device, (55)... control device, (56)... electromagnetic pump, (57)... blower. , in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
する送風機、上記触媒体に燃料を供給する燃料供給装置
、上記触媒体に達した上記燃焼用空気と上記燃料との混
合気に点火する点火材、上記触媒体の内部の上記混合気
の流れ方向に間隔をあけて設けた複数の感熱部、この感
熱部の温度を検出する温度検出装置、及びこの温度検出
装置からの出力信号を演算して上記送風機と上記燃料供
給装置を制御する制御装置を備え、空気量と燃焼量が所
定値になるようにしたことを特徴とする触媒燃焼装置。A honeycomb-shaped catalyst body, a blower that supplies combustion air to the catalyst body, a fuel supply device that supplies fuel to the catalyst body, and igniting the mixture of the combustion air and the fuel that has reached the catalyst body. An ignition material, a plurality of heat sensitive parts provided at intervals in the flow direction of the air-fuel mixture inside the catalyst body, a temperature detection device that detects the temperature of the heat sensitive parts, and an output signal from the temperature detection device is calculated. A catalytic combustion device comprising: a control device for controlling the blower and the fuel supply device so that the amount of air and the amount of combustion become predetermined values.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33541190A JPH04198618A (en) | 1990-11-28 | 1990-11-28 | Catalytic combustion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33541190A JPH04198618A (en) | 1990-11-28 | 1990-11-28 | Catalytic combustion apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04198618A true JPH04198618A (en) | 1992-07-20 |
Family
ID=18288249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33541190A Pending JPH04198618A (en) | 1990-11-28 | 1990-11-28 | Catalytic combustion apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04198618A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001014793A1 (en) * | 1999-08-19 | 2001-03-01 | Matsushita Electric Industrial Co., Ltd. | Catalyst combustion device and fuel vaporizing device |
| US6270336B1 (en) * | 1998-06-05 | 2001-08-07 | Matsushita Electric Industrial Co., Ltd. | Catalytic combustion system and combustion control method |
| WO2003073000A1 (en) * | 2002-02-26 | 2003-09-04 | General Motors Corporation | Catalytic combustion of storage tank off gases |
-
1990
- 1990-11-28 JP JP33541190A patent/JPH04198618A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6270336B1 (en) * | 1998-06-05 | 2001-08-07 | Matsushita Electric Industrial Co., Ltd. | Catalytic combustion system and combustion control method |
| WO2001014793A1 (en) * | 1999-08-19 | 2001-03-01 | Matsushita Electric Industrial Co., Ltd. | Catalyst combustion device and fuel vaporizing device |
| US6632085B1 (en) | 1999-08-19 | 2003-10-14 | Matsushita Electric Industrial Co., Ltd. | Catalyst combustion device and fuel vaporizing device |
| WO2003073000A1 (en) * | 2002-02-26 | 2003-09-04 | General Motors Corporation | Catalytic combustion of storage tank off gases |
| US6699032B2 (en) * | 2002-02-26 | 2004-03-02 | General Motors Corporation | Catalytic combustion of storage tank off-gases |
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