JPH03164617A - Catalyst combustion device - Google Patents
Catalyst combustion deviceInfo
- Publication number
- JPH03164617A JPH03164617A JP30450289A JP30450289A JPH03164617A JP H03164617 A JPH03164617 A JP H03164617A JP 30450289 A JP30450289 A JP 30450289A JP 30450289 A JP30450289 A JP 30450289A JP H03164617 A JPH03164617 A JP H03164617A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst layer
- combustion
- temperature
- auxiliary
- abnormality
- 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
- 239000003054 catalyst Substances 0.000 title claims abstract description 71
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 69
- 239000000446 fuel Substances 0.000 claims abstract description 10
- 238000007084 catalytic combustion reaction Methods 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 abstract description 30
- 230000005856 abnormality Effects 0.000 abstract description 14
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 230000004913 activation Effects 0.000 abstract description 3
- 230000007704 transition Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract 1
- 239000002912 waste gas Substances 0.000 abstract 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 239000006200 vaporizer Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Regulation And Control Of Combustion (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は気体もしくは液体の燃料を燃焼触媒層で無炎燃
焼させて暖房に用いる触媒燃焼装置に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a catalytic combustion device used for heating by flamelessly burning gaseous or liquid fuel in a combustion catalyst layer.
〈従来技術〉
触媒燃焼方式は一般に、従来の火炎燃焼方式て比較して
放射エネルギー効率が高く、遠赤外線に富んだ加熱方式
であり、COやNOxをほとんど排出しない利点を有す
る。しかし、触媒燃焼層に担持された白金、パラジウム
等の白金族金属触媒は、触媒燃焼を長期に渡って継続す
るうちに活性が次第に低下し、初期特性が劣化して不完
全燃焼成分や未燃焼成分等から成る有害可燃性ガスを排
出するようになる。<Prior Art> The catalytic combustion method generally has higher radiant energy efficiency than the conventional flame combustion method, is a heating method rich in far infrared rays, and has the advantage of emitting almost no CO or NOx. However, as platinum group metal catalysts such as platinum and palladium supported in the catalytic combustion layer continue catalytic combustion over a long period of time, their activity gradually decreases and their initial characteristics deteriorate, resulting in incompletely burned components and unburned components. Harmful flammable gas consisting of components, etc. will be emitted.
また、触媒燃焼装置に何らかの異常が生じ、安定して燃
焼できない場合にも有害可燃性ガスを排出することがあ
り、人体に悪い影響を及ぼしている。Further, even if some abnormality occurs in the catalytic combustion device and stable combustion is not possible, harmful combustible gases may be emitted, which has a negative effect on the human body.
上記触媒燃焼装置の燃焼触媒層の寿命や有害可燃性ガス
の排出を検知する従来の手段として、例えば特公昭61
−53601号公報に記載されているように燃焼触媒層
の上流側に温度検知素子を設け、安定燃焼時と比較して
検知温度が高くなれば逆火とし、低くなれば吹飛びとし
てこれらの異常を検知して燃料供給を遮断するものが知
られている。As a conventional means for detecting the life of the combustion catalyst layer of the above-mentioned catalytic combustion device and the emission of harmful combustible gases, for example,
As described in Publication No. 53601, a temperature detection element is provided on the upstream side of the combustion catalyst layer, and if the detected temperature becomes higher than that during stable combustion, it is considered a backfire, and if it becomes lower, it is considered as a blowout and these abnormalities are detected. There are known devices that detect this and cut off the fuel supply.
〈発明が解決しようとする課題〉
上記特公昭61−53601号公報に示されるような従
来の方法では、燃焼触媒層の開口面積が比較的大きいと
きには、温度検知素子−個で燃焼触媒層全域の温度を検
知することが困難であり、特に温度検知素子と燃焼触媒
層とが離れているために1吹飛び(スリップエイジ)が
局部的に発生した場合精度良く検知することができず、
有害可燃性ガスの排出を防止することが難かしい。<Problems to be Solved by the Invention> In the conventional method as shown in the above-mentioned Japanese Patent Publication No. 61-53601, when the opening area of the combustion catalyst layer is relatively large, one temperature sensing element can cover the entire area of the combustion catalyst layer. It is difficult to detect temperature, and in particular, if slip age occurs locally due to the distance between the temperature detection element and the combustion catalyst layer, it cannot be detected accurately.
It is difficult to prevent the emission of harmful flammable gases.
く課題を解決するための手段〉
本発明は、気体もしくは液体燃料を無炎燃焼させ、その
燃焼熱を例えば遠赤外線を主とする幅対熱に変換して暖
房に利用するための触媒燃焼装置において、燃焼触媒層
の排気ガスが通過する経路に、不完全燃焼ガスや未燃焼
ガス等の有害可燃性ガスを燃焼して排気ガスを浄化する
ための補助触媒層を備え、その補助触媒層の温度を検知
するための温度検知素子を設けて、検知温度に変化が生
ずるかあるいは初期値に対して偏差が生じたときに、異
常燃焼として判定できるようにしたものである。Means for Solving the Problems> The present invention provides a catalytic combustion device for flameless combustion of gaseous or liquid fuel, converting the combustion heat into width-to-air heat mainly consisting of far infrared rays, and using it for space heating. , an auxiliary catalyst layer is provided in the path through which the exhaust gas passes through the combustion catalyst layer to purify the exhaust gas by burning harmful combustible gases such as incompletely combusted gas and unburned gas. A temperature detection element for detecting temperature is provided so that abnormal combustion can be determined when the detected temperature changes or deviates from the initial value.
く作 用〉
予熱後、定常燃焼状態にあって触媒燃焼装置に何らかの
異常が発生して燃焼触媒層に有害可燃性ガスが生じたと
き、有害可燃性ガスは補助触媒層で燃焼されるために補
助触媒層の入口の温度が急速に上昇する。これを温度検
知素子で検出して動作異常と認め、触媒燃焼装置の燃焼
を停止する。Function> After preheating, when some abnormality occurs in the catalytic combustion device during steady combustion and harmful flammable gas is generated in the combustion catalyst layer, the harmful flammable gas is burned in the auxiliary catalyst layer. The temperature at the inlet of the auxiliary catalyst layer rises rapidly. This is detected by the temperature detection element, recognized as an abnormal operation, and the combustion of the catalytic combustion device is stopped.
あるいは、燃焼触媒層の劣化によって有害可燃性ガスが
生じたときにも、補助触媒層の入口の温度は、初期の正
常のときに比較して高い値をとる。Alternatively, even when harmful combustible gas is generated due to deterioration of the combustion catalyst layer, the temperature at the inlet of the auxiliary catalyst layer takes a higher value compared to the initial normal state.
これを温度検知素子で検出して動作異常と認め、同様て
触媒燃焼装置の燃焼を停止する。This is detected by the temperature detection element, recognized as an operational abnormality, and combustion in the catalytic combustion device is similarly stopped.
〈実施例〉 本発明の一実施例を以下に述べる。<Example> An embodiment of the present invention will be described below.
第1図は本発明の触媒燃焼装置の前面の概略断面図であ
り、第2図は第1図のL−L’を横からみた概略断面図
である。1は遠赤外線の放射効率に優れた、ハニカム状
の耐熱無機材料からなる担体に、白金、パラジウム等の
白金族金属触媒を担持した燃焼触媒層であり、箱形の混
合室5の前面の開口部に取付けられている。混合室5の
底部にはエジェクタ一方式のバーナー6と気化器7が設
けられ、混合室5の下部の一部に配置された減圧室12
の一方の側面にバーナー6のスロート孔6Aがあり、相
対する側面には気化器7の燃料噴出ノズル7Aがある。FIG. 1 is a schematic cross-sectional view of the front surface of the catalytic combustion apparatus of the present invention, and FIG. 2 is a schematic cross-sectional view taken along line LL' in FIG. 1 from the side. Reference numeral 1 denotes a combustion catalyst layer in which a platinum group metal catalyst such as platinum or palladium is supported on a honeycomb-shaped carrier made of a heat-resistant inorganic material that has excellent far-infrared radiation efficiency. It is attached to the section. A one-side ejector burner 6 and a vaporizer 7 are provided at the bottom of the mixing chamber 5, and a decompression chamber 12 is provided at a part of the lower part of the mixing chamber 5.
There is a throat hole 6A of the burner 6 on one side, and a fuel injection nozzle 7A of the carburetor 7 is on the opposite side.
減圧室12の前面には一次空気口17が設けられている
。混合室5の底面には適切な大きさの複数の二次空気口
18が開口し、後壁の上方には燃焼用空気と気化した燃
料の混合と拡散を促進させ、燃焼触媒層lに均等に供給
するための拡散板8と、燃焼触媒層温度検知素子13が
取付けられている。また混合室5の前面を除く外周には
送風機16から送られる燃焼用空気を予熱するための加
圧室9と遮へい板11と熱交換ダク)10が備わってい
る。燃焼触媒層Iの出口側の前方空間の排気ガスの流路
は熱透過ガラス板3によって外部から仕切られており、
排気ガスの流路の上方には、ハニカム状の耐熱無機材料
からなる担体に、1〜2 g/lの量の白金族金属触媒
を担持した補助触媒層2と、補助触媒層2の入口側の表
面温度を検知するための補助触媒層温度検知素子4が設
けられている。なお、熱透過ガラス板3は、自然対流に
よって、燃焼触媒層1から排出される排気ガスが全て補
助触媒層2を通過するならば、金網状のガードにしても
よい。A primary air port 17 is provided at the front of the decompression chamber 12 . A plurality of appropriately sized secondary air ports 18 are opened at the bottom of the mixing chamber 5, and the upper part of the rear wall promotes the mixing and diffusion of combustion air and vaporized fuel, and spreads them evenly over the combustion catalyst layer l. A diffusion plate 8 and a combustion catalyst layer temperature detection element 13 are attached. Further, the outer periphery of the mixing chamber 5 except for the front side is provided with a pressurizing chamber 9, a shielding plate 11, and a heat exchange duct 10 for preheating combustion air sent from a blower 16. The exhaust gas flow path in the front space on the exit side of the combustion catalyst layer I is partitioned off from the outside by a heat-transmitting glass plate 3.
Above the exhaust gas flow path, there is an auxiliary catalyst layer 2 in which a honeycomb-shaped carrier made of a heat-resistant inorganic material supports a platinum group metal catalyst in an amount of 1 to 2 g/l, and an inlet side of the auxiliary catalyst layer 2. An auxiliary catalyst layer temperature detection element 4 is provided to detect the surface temperature of the catalyst layer. Note that the heat-transmitting glass plate 3 may be a wire mesh guard as long as all the exhaust gas discharged from the combustion catalyst layer 1 passes through the auxiliary catalyst layer 2 due to natural convection.
次に本発明の実施例の動作について述べる。Next, the operation of the embodiment of the present invention will be described.
まず、前記気化器7に内蔵されたヒーター(図示されな
い)と点火用ヒーター14に通電し、気化器7の温度が
250〜300℃に到達すると、送油ポンプ(図示され
ない)が作動して気化器7に液体燃料が送り込まれ、気
化して噴出ノズル7Aより噴出する。同時に送風機16
が作動し、燃焼用空気は加圧室9から熱交換ダク)IO
を通り、一部は1次空気口17を通過してバーナー6へ
、残りは二次空気口+8を通過して混合室5へと、以後
消火に至るまで一定量送り込まれる。バーナー6へ送り
込まれる空気量は、液体燃料が噴出ノズル7Aから噴出
するときのエジェクター効果(吸引効果)と送風機16
から圧送される空気量と一次空気口17の開口面積によ
って決まる。圧送される空気量は一定であるため、−大
空気口17の開口面積をあらかじめ調節して空気比を予
熱のためのバーナでの火炎燃焼に適した1、0〜1.5
の範囲としておく。バーナー6より送出される予混合ガ
スは、点火ヒーター14で点火されてバーナー6の上面
で火炎燃焼する。このときの燃焼量は、気化器6への送
油量により調節することができる。First, the heater (not shown) built into the vaporizer 7 and the ignition heater 14 are energized, and when the temperature of the vaporizer 7 reaches 250 to 300°C, the oil feed pump (not shown) is activated to vaporize the vapor. Liquid fuel is fed into the vessel 7, vaporized, and ejected from the ejection nozzle 7A. Air blower 16 at the same time
operates, and the combustion air is transferred from the pressurized chamber 9 to the heat exchange duct) IO.
A part passes through the primary air port 17 to the burner 6, and the rest passes through the secondary air port +8 to the mixing chamber 5. Thereafter, a constant amount is sent until the fire is extinguished. The amount of air sent to the burner 6 is determined by the ejector effect (suction effect) when liquid fuel is ejected from the ejection nozzle 7A and the blower 16.
It is determined by the amount of air pumped from the primary air port 17 and the opening area of the primary air port 17. Since the amount of air to be pumped is constant, - The opening area of the large air port 17 is adjusted in advance to adjust the air ratio to 1.0 to 1.5, which is suitable for flame combustion in a burner for preheating.
Let the range be . The premixed gas sent out from the burner 6 is ignited by the ignition heater 14 and burns with flame on the upper surface of the burner 6. The amount of combustion at this time can be adjusted by the amount of oil fed to the carburetor 6.
一定時間後に点火ヒーター14の通電を遮断しても、バ
ーナー6の上面での火炎燃焼は継続し、その火炎燃焼に
よって発生する高温の燃焼ガスは二次空気と混合して燃
焼触媒層1を予熱する。燃焼触媒層温度検知素子13に
よって燃焼触媒層lの温度が活性温度以上に到達したこ
とが検知されたとき、送油ポンプを停止して火炎燃焼を
停止する。火炎燃焼の停止後に再び送油ポンプを作動す
れば、点火ヒーター14への通電は遮断されたままであ
るので、予混合ガスは点火することなくバーナー6を経
て混合室5へ送り込まれ、二次空気口18から送り込ま
れる二次空気と混合して触媒燃焼に適したおよそ2〜4
の空気比に高められて燃焼触媒層1へ送り込まれ、触媒
燃焼を開始する。Even if the power supply to the ignition heater 14 is cut off after a certain period of time, flame combustion continues on the upper surface of the burner 6, and the high-temperature combustion gas generated by the flame combustion mixes with secondary air to preheat the combustion catalyst layer 1. do. When the combustion catalyst layer temperature detection element 13 detects that the temperature of the combustion catalyst layer l has reached the activation temperature or higher, the oil feed pump is stopped to stop flame combustion. If the oil feed pump is operated again after the flame combustion has stopped, the power to the ignition heater 14 remains cut off, so the premixed gas is sent to the mixing chamber 5 via the burner 6 without being ignited, and the secondary air is Approximately 2 to 4 particles suitable for catalytic combustion by mixing with the secondary air sent in from the port 18
The air ratio is increased to , and the air is fed into the combustion catalyst layer 1 to start catalytic combustion.
燃焼触媒層lは、予混合ガスが完全燃焼するのに十分な
空間速度を有するような厚みに作られており、有害可燃
性ガスを排出することなく着火して昇温し、定常燃焼状
態となる。第3図は補助触媒層温度検知素子4による補
助触媒層2の入口温度の検知例であって、実線は正常に
燃焼しているときを示し、−点鎖線は異常燃焼となった
ときの温度の上昇の様子と、異常燃焼と判定した後の動
作停止したときの温度の変化を示す。触媒燃焼装置を運
転開始すると、燃焼触媒層1が予熱されて定常燃焼状態
に移行する間に、燃焼触媒層Iから排出される高温の排
気ガスによって補助触媒層2も加熱されて温度が上昇し
、触媒活性温度である約210℃以上の温度に達して安
定する。この補助触媒層2の入口の温度は、燃焼触媒層
1における燃焼量によって決まる。いま、触媒燃焼装置
に何らかの異常が発生し、燃焼触媒層■からそのまま燃
焼を継続すれば有害な量の有害可燃性ガスが排出された
とき、第4図の補助触媒層2の断面温度分布図に示され
るように、有害可燃性ガスは主に補助触媒層2の入口部
分で酸化燃焼されるために、入口部分の温度は出口の温
度よりも急激に上昇する。従って、それぞれの燃焼量に
対応する補助触媒層2の入口側で検出される安定温度よ
りも少くとも10〜20℃高い値に変化したときに異常
と判定して、すみやかに液体燃料の供給を遮断し、送風
機16の運転を継続して消火と冷却を行うと同時に異常
ランプを点灯する。なお、運転開始後2〜3分間の予熱
時と、例えば弱燃焼から強燃焼へと燃焼量を切換えたと
き等の過渡状態では、この異常の判定は行なわない。さ
らに1燃焼触媒層1が劣化したときにも、有害可燃性ガ
スが排出されるため、補助触媒層2の入口の温度は、正
常値として初期に記憶された値または設定された値に比
較すると高くなり、燃焼量に対応する正常値よりも約2
0℃高い値が検出されたときに異常と判定して、同様に
してすみやかに消火と冷却を行い、異常ランプを点灯す
る。The combustion catalyst layer l is made to have a thickness that has a space velocity sufficient for complete combustion of the premixed gas, ignites and raises the temperature without emitting harmful combustible gas, and maintains a steady combustion state. Become. FIG. 3 shows an example of detection of the inlet temperature of the auxiliary catalyst layer 2 by the auxiliary catalyst layer temperature detection element 4, where the solid line indicates the temperature when combustion is normal, and the dashed-dotted line indicates the temperature when abnormal combustion occurs. The figure shows the rise in temperature and the change in temperature when the operation is stopped after abnormal combustion has been determined. When the catalytic combustion device starts operating, while the combustion catalyst layer 1 is preheated and transitions to a steady combustion state, the auxiliary catalyst layer 2 is also heated by the high temperature exhaust gas discharged from the combustion catalyst layer I, and its temperature rises. , it reaches a temperature of about 210° C. or higher, which is the catalyst activation temperature, and becomes stable. The temperature at the inlet of this auxiliary catalyst layer 2 is determined by the amount of combustion in the combustion catalyst layer 1. Now, when some kind of abnormality occurs in the catalytic combustion device and a harmful amount of combustible gas is discharged from the combustion catalyst layer 2 which would be harmful if combustion continues as it is, the cross-sectional temperature distribution diagram of the auxiliary catalyst layer 2 shown in Fig. 4 As shown in , since the harmful combustible gas is mainly oxidized and burned at the inlet of the auxiliary catalyst layer 2, the temperature at the inlet increases more rapidly than the temperature at the outlet. Therefore, when the temperature changes to a value that is at least 10 to 20 degrees Celsius higher than the stable temperature detected at the inlet side of the auxiliary catalyst layer 2 corresponding to each combustion amount, it is determined that there is an abnormality and the supply of liquid fuel is immediately stopped. The blower 16 is shut off, and the blower 16 continues to operate to extinguish the fire and cool the air, and at the same time, turns on the abnormality lamp. Note that this abnormality determination is not performed during preheating for 2 to 3 minutes after the start of operation and in a transient state such as when the combustion amount is switched from weak combustion to strong combustion. Furthermore, even when combustion catalyst layer 1 deteriorates, harmful combustible gases are emitted, so the temperature at the inlet of auxiliary catalyst layer 2 is lower than the value initially stored as a normal value or the set value. approximately 2 times higher than the normal value corresponding to the amount of combustion.
When a value 0°C higher is detected, it is determined that there is an abnormality, and the fire is promptly extinguished and cooled in the same way, and the abnormality lamp is turned on.
〈発明の効果〉
本発明のように、燃焼触媒層による排気ガスが通過する
経路に補助触媒層を設けた触媒燃焼装置において、補助
触媒層温度検知素子を設けて、その検知温度の変化もし
くは初期設定値との偏差を見ることにより、排気ガス中
の有害可燃性ガスの存在を知ることができ、触媒燃焼装
置の動作異常かもしくは燃焼触媒層の劣化による事故の
防止が可能となる。<Effects of the Invention> As in the present invention, in a catalytic combustion device in which an auxiliary catalyst layer is provided in a path through which exhaust gas passes through the combustion catalyst layer, an auxiliary catalyst layer temperature detection element is provided to detect changes in the detected temperature or the initial state. By looking at the deviation from the set value, it is possible to know the presence of harmful combustible gas in the exhaust gas, and it is possible to prevent accidents due to abnormal operation of the catalytic combustion device or deterioration of the combustion catalyst layer.
第1図は本発明の触媒燃焼装置の前面の概略断面図であ
る。第2図は第1図のL−L’を横からみた概略断面図
である。第3図は補助触媒層検知素子によって検知され
た、正常燃焼と異常燃焼のときの補助触媒層の入口の温
度を示す状態図である。
第4図は補助触媒層の断面の温度分布図である。
1・・・燃焼触媒層、2・・・補助触媒層、4・・・補
助触媒層温度検知素子、6・・・バーナー 7・・・気
化器、9・・・熱交換ダクト、15・・・温風吹出し口
、16・・・送風機。FIG. 1 is a schematic sectional view of the front side of the catalytic combustion apparatus of the present invention. FIG. 2 is a schematic sectional view taken along line LL' in FIG. 1 from the side. FIG. 3 is a state diagram showing the temperature at the inlet of the auxiliary catalyst layer during normal combustion and abnormal combustion, as detected by the auxiliary catalyst layer detection element. FIG. 4 is a temperature distribution diagram of a cross section of the auxiliary catalyst layer. DESCRIPTION OF SYMBOLS 1... Combustion catalyst layer, 2... Auxiliary catalyst layer, 4... Auxiliary catalyst layer temperature detection element, 6... Burner 7... Vaporizer, 9... Heat exchange duct, 15...・Warm air outlet, 16...Blower.
Claims (1)
触媒層と、排出される排気ガスが通過する経路に未燃焼
ガスあるいは不完全燃焼ガスを浄化するための補助触媒
層を設けた触媒燃焼装置において、 補助触媒層の温度を検知するための温度検知素子と、こ
の温度検知素子の出力に基づいて燃焼状態の判定信号を
出力する判定手段とを設けたことを特徴とする触媒燃焼
装置。[Claims] 1. A combustion catalyst layer for flameless combustion of gaseous or liquid fuel, and an auxiliary catalyst for purifying unburned or incompletely burned gas in a path through which exhaust gas passes. A catalytic combustion device provided with layers, characterized by being provided with a temperature detection element for detecting the temperature of the auxiliary catalyst layer, and a determination means for outputting a combustion state determination signal based on the output of the temperature detection element. Catalytic combustion equipment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30450289A JPH03164617A (en) | 1989-11-21 | 1989-11-21 | Catalyst combustion device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30450289A JPH03164617A (en) | 1989-11-21 | 1989-11-21 | Catalyst combustion device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03164617A true JPH03164617A (en) | 1991-07-16 |
Family
ID=17933806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30450289A Pending JPH03164617A (en) | 1989-11-21 | 1989-11-21 | Catalyst combustion device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03164617A (en) |
-
1989
- 1989-11-21 JP JP30450289A patent/JPH03164617A/en active Pending
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