JPS6312225B2 - - Google Patents
Info
- Publication number
- JPS6312225B2 JPS6312225B2 JP1875181A JP1875181A JPS6312225B2 JP S6312225 B2 JPS6312225 B2 JP S6312225B2 JP 1875181 A JP1875181 A JP 1875181A JP 1875181 A JP1875181 A JP 1875181A JP S6312225 B2 JPS6312225 B2 JP S6312225B2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- amount
- air
- water heater
- combustion
- 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
Links
- 239000003054 catalyst Substances 0.000 claims description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000002485 combustion reaction Methods 0.000 claims description 24
- 239000000446 fuel Substances 0.000 claims description 11
- 238000007084 catalytic combustion reaction Methods 0.000 claims description 10
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 10
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 7
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- -1 platinum group metals Chemical class 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052878 cordierite Inorganic materials 0.000 claims description 2
- 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 claims description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 2
- 229910052863 mullite Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- 229910052723 transition metal Inorganic materials 0.000 claims description 2
- 150000003624 transition metals Chemical class 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 229910052741 iridium Inorganic materials 0.000 claims 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 1
- 229910052703 rhodium Inorganic materials 0.000 claims 1
- 239000010948 rhodium Substances 0.000 claims 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims 1
- 229910052707 ruthenium Inorganic materials 0.000 claims 1
- 229910000314 transition metal oxide Inorganic materials 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical compound [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/0027—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using fluid fuel
- F24H1/0045—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using fluid fuel with catalytic combustion
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
- Spray-Type Burners (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Description
【発明の詳細な説明】
本発明はガス燃料または気化させた液体燃料を
燃焼させた排気ガスを熱交換器により熱交換さ
せ、温水として取り出す湯沸器に関し、燃焼は触
媒体表面で無炎燃焼せしめ、燃焼室を極端に小さ
くさせ、かつ触媒体を二分割し、また触媒体から
の熱放散を良くさせることによつて、触媒体自身
の熱が極端に高くならないようにさせ、触媒体の
寿命を長くさせた熱交換効率の良いコンパクトな
湯沸器の開発を目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water heater that exchanges heat with exhaust gas produced by burning gaseous fuel or vaporized liquid fuel using a heat exchanger and extracts hot water, and the combustion is carried out by flameless combustion on the surface of a catalyst body. By making the combustion chamber extremely small, dividing the catalyst into two parts, and improving heat dissipation from the catalyst, the heat of the catalyst itself can be prevented from becoming extremely high. The aim is to develop a compact water heater with long life and good heat exchange efficiency.
従来この種の湯沸器の燃焼法はガス燃料あるい
は石油燃料を問わず、全て炎口板において炎を形
成させ燃焼させる形態を採つていた。従つて炎を
形成させるためにはそれに合致したスペースの燃
焼室を持たなくてはならない。無理してコンパク
トな形とさせ、炎を壁面に触れさせると、炎の急
冷により一酸化炭素が発生してしまう。燃焼法そ
のものを考えても空気中で炎を形成する方法は多
くのNOxが排出され、また燃料に石油等を用い
た場合は消火の際の臭気など完全に防ぎきれない
数々の欠点を有し、商品的に完全な状態であると
は言いにくい。 Conventionally, the combustion method for this type of water heater, regardless of whether the fuel is gas fuel or oil fuel, has been to form a flame in a flame port plate and burn it. Therefore, in order to form a flame, it is necessary to have a combustion chamber of matching space. If you try to force it into a compact shape and let the flame touch the wall, carbon monoxide will be generated due to the rapid cooling of the flame. Even when considering the combustion method itself, methods that form flames in the air emit a lot of NOx, and when petroleum is used as fuel, there are many drawbacks that cannot be completely prevented, such as the odor that occurs when extinguishing a fire. , it is difficult to say that the product is in perfect condition.
本発明による触媒燃焼湯沸器はこれらの欠点の
大部分を取り除くことのできる湯沸器で、定常燃
焼時には炎を形成していないためNOxの排出は
極めて少なく、またCOおよび臭気の排出もない。
さらに従来この種の高温触媒燃焼技術で理論空気
量近くで燃焼させると触媒体の温度が高くなりす
ぎ、触媒担体の破壊及び触媒性能の劣化などをま
ねきやすい。ある程度の過剰空気で燃焼させれば
良いのであるが、湯沸器のような熱交換器を介し
て別のものに熱を移行させるためには燃焼の際不
必要な空気を加熱することは好ましくない。 The catalytic combustion water heater according to the present invention is a water heater that can eliminate most of these drawbacks.Since no flame is formed during steady combustion, NOx emissions are extremely low, and there is no CO or odor emissions. .
Furthermore, if conventional high-temperature catalytic combustion techniques of this type were used to burn at near the stoichiometric air amount, the temperature of the catalyst would become too high, which would easily lead to destruction of the catalyst carrier and deterioration of catalyst performance. It is sufficient to perform combustion with a certain amount of excess air, but in order to transfer heat to another object via a heat exchanger such as a water heater, it is preferable to heat unnecessary air during combustion. do not have.
以上のことについても本発明は解決でき、理論
空気に近い範囲で燃焼することができ、従来に例
を見ない画期的なコンパクトな機器の設計が可能
となつた。 The present invention solves the above problems, allows combustion in a range close to that of stoichiometric air, and enables the design of an unprecedented compact device.
以下本発明の一実施例を添付図面にもとずいて
説明する。 An embodiment of the present invention will be described below with reference to the accompanying drawings.
図面は本発明による触媒燃焼湯沸器の断面図で
ある。図面において耐熱性金属で出来ている円筒
形の燃焼筒１の内部に小孔２を多数穿つた耐熱性
無機質の触媒担体の表面に酸化触媒を担持させた
触媒体Ａ３を設置し、その上流方向（図面では右
手方向）には燃焼筒１を一回り小さくさせた小燃
焼筒４が、その内部に触媒体Ａ３より小さな径の
触媒体Ｂ５を内蔵させて設置されている。触媒体
Ｂ５は触媒体Ａ３と同じく小孔６が穿たれてお
り、その担持組成や触媒組成は触媒体Ａ３と同じ
である。また燃焼筒１と小燃焼筒４との間には触
媒体Ａ３に供給する燃焼空気の通過する空気供給
路７がある。触媒体Ａ３の前方（図面では左手）
には触媒体Ａ３に近接させて多数の細い熱交換管
８を有した熱交換器９が設置してある。触媒体Ａ
３と触媒体Ｂ５の間にはスパイラル状の熱交換パ
イプ１０が設置され、その上流は給水管１１が接
続され、熱交換器９と熱交換パイプ１０の間には
連結管１２で接続されている。さらに熱交換器９
上部には給湯管１３が燃焼筒１を貫通して外部に
出ている。また触媒体Ｂの燃焼ガス排出面１４近
傍には点火プラグ１５が具備されている。 The drawing is a sectional view of a catalytic combustion water heater according to the invention. In the drawing, a catalyst body A3 carrying an oxidation catalyst is installed on the surface of a heat-resistant inorganic catalyst carrier having many small holes 2 inside a cylindrical combustion cylinder 1 made of a heat-resistant metal, and the catalyst body A3 is placed in the upstream direction. A small combustion tube 4, which is slightly smaller than the combustion tube 1 (toward the right in the drawing), is installed with a catalyst body B5 having a smaller diameter than the catalyst body A3 built therein. Catalyst body B5 has small holes 6 like catalyst body A3, and its supporting composition and catalyst composition are the same as catalyst body A3. Further, between the combustion tube 1 and the small combustion tube 4, there is an air supply path 7 through which combustion air to be supplied to the catalyst body A3 passes. In front of catalyst A3 (left hand in the drawing)
A heat exchanger 9 having a large number of thin heat exchange tubes 8 is installed in close proximity to the catalyst body A3. Catalyst body A
A spiral heat exchange pipe 10 is installed between the heat exchanger 9 and the catalyst body B5, a water supply pipe 11 is connected to the upstream side of the spiral heat exchange pipe 10, and a connecting pipe 12 is connected between the heat exchanger 9 and the heat exchange pipe 10. There is. Furthermore, heat exchanger 9
At the top, a hot water supply pipe 13 passes through the combustion cylinder 1 and exits to the outside. Further, an ignition plug 15 is provided near the combustion gas discharge surface 14 of the catalyst body B.
次に上記構成における作用を説明する。 Next, the operation of the above configuration will be explained.
先ずあらかじめ点火プラグ１５をスパークさ
せ、小燃焼筒４上流からガス燃料あるいは気化さ
せた液体燃料を所定量の空気と共に流し、触媒体
Ｂ５の燃焼ガス排出面１４で通常の有炎燃焼をさ
せる。この時の空気過率は通常の炎燃焼と同程度
（1.2〜1.5）で良い。しばらく燃焼させている間
にその熱により触媒体Ａ３、触媒体Ｂ５とも加熱
され触媒活性能力を発揮する温度にまで昇温させ
られる。この時点で燃料ガスの量を増加させ、併
せて空気供給路７から触媒体Ａ３で燃焼消費する
ための空気を供給させる。この時点でそれぞれの
触媒体３，５にかかる空気過剰率は触媒体Ｂ５で
約0.4〜0.5、触媒体Ａ３で約1.2〜1.3程度が望ま
しい。定常燃焼時における両触媒体３，５の温度
はいずれも900℃から1400℃程度である。一方熱
交換される水は給水管１１より熱交換パイプ１
０、連結管１２を通つて熱交換器９に至り、給湯
管１３から湯となつて排出される。この間に水は
熱交換パイプ１０と熱交換器９の双方で熱交換さ
れ、一方触媒体Ｂ５で排出された熱排気ガスは充
分冷却され触媒体Ａ３に至るため、双方の触媒体
３，５はそれほど温度を上げず、かつ不必要な過
剰空気の温度を上げることなく、効率良く触媒燃
焼させることができる。 First, the ignition plug 15 is sparked in advance, and gas fuel or vaporized liquid fuel flows from upstream of the small combustion tube 4 together with a predetermined amount of air to cause normal flaming combustion on the combustion gas discharge surface 14 of the catalyst body B5. The air permeability at this time should be at the same level as normal flame combustion (1.2 to 1.5). During combustion for a while, both the catalyst body A3 and the catalyst body B5 are heated by the heat and are raised to a temperature at which the catalyst exhibits its catalytic activity. At this point, the amount of fuel gas is increased, and at the same time, air is supplied from the air supply path 7 to be burned and consumed by the catalyst body A3. At this point, the air excess ratio applied to each of the catalyst bodies 3 and 5 is desirably about 0.4 to 0.5 for the catalyst body B5, and about 1.2 to 1.3 for the catalyst body A3. The temperatures of both catalyst bodies 3 and 5 during steady combustion are approximately 900°C to 1400°C. On the other hand, the water to be heat exchanged is transferred from the water supply pipe 11 to the heat exchange pipe 1
0, it reaches the heat exchanger 9 through the connecting pipe 12, and is discharged from the hot water supply pipe 13 as hot water. During this time, the water is heat exchanged in both the heat exchange pipe 10 and the heat exchanger 9, and on the other hand, the hot exhaust gas discharged from the catalyst body B5 is sufficiently cooled and reaches the catalyst body A3, so that both catalyst bodies 3 and 5 are heated. Catalytic combustion can be carried out efficiently without raising the temperature too much and without raising the temperature of excess air unnecessarily.
触媒体３，５の材料は各種のものが考えられる
が、担体材料としてはムライト、α−アルミナ、
コーデイエライト、ムライト−ジルコニア、α−
アルミナ−ジルコニア、コーデイエライト−ジル
コニア、ムライト−α−アルミナ炭化硅素及び窒
化硅素などのセラミツクスを使用したものが一般
的である。さらにこの担体上に担持させる酸化触
媒としては白金、パラジウムなどの白金属金属、
コバルト、ニツケルなどの遷移金属の酸化物、あ
るいはこれらを組み合せたものなど各種のものが
使用可能である。 Various materials can be considered for the catalyst bodies 3 and 5, but the carrier materials include mullite, α-alumina,
cordierite, mullite-zirconia, α-
Ceramics such as alumina-zirconia, cordierite-zirconia, mullite-α-alumina silicon carbide, and silicon nitride are generally used. Furthermore, as the oxidation catalyst supported on this carrier, platinum metals such as platinum and palladium,
Various oxides of transition metals such as cobalt and nickel, or combinations thereof can be used.
次に触媒体についての実施例を述べる。 Next, examples regarding catalyst bodies will be described.
担体材料：ムライト−ジルコニア
空隙率：約30％
形状：100φ×20（触媒体Ａ）
80φ×20（触媒体Ｂ）
セル孔1.5mm角、セル厚0.5mm
上記担体に下記の下処理及び触媒担持を行な
う。Support material: Mullite-zirconia Porosity: Approx. 30% Shape: 100φ x 20 (catalyst body A) 80φ x 20 (catalyst body B) Cell hole 1.5mm square, cell thickness 0.5mm The following pretreatment and catalyst support are carried out on the above carrier. Do this.
硝酸ジルコニウム、10％アルミナゾル及びイオ
ン交換水を重量比２：５：10の割合で充分撹拌混
合させ、この中にγ−Al2O3の微粉末を前記混合
液の中に少量ずつ撹拌しながら10重量％程度加え
たものの中に担体を浸し、温風中で乾燥させる工
程を３〜４回繰り返した後、600℃空気中で２時
間焼成する。このものを冷却した後、塩化白金酸
水溶液の中に約30分含浸させ取り出し、温風中で
水分が完全に無くなるように乾燥させる。 Zirconium nitrate, 10% alumina sol, and ion-exchanged water were thoroughly stirred and mixed at a weight ratio of 2:5:10, and fine powder of γ-Al 2 O 3 was added little by little into the mixture while stirring. The process of immersing the carrier in a mixture containing about 10% by weight and drying it in hot air is repeated 3 to 4 times, and then calcined in air at 600°C for 2 hours. After cooling, this material is immersed in an aqueous solution of chloroplatinic acid for about 30 minutes, taken out, and dried in warm air until all moisture is removed.
担持量は白金量で触媒体Ａの場合約0.3ｇ、触
媒体Ｂの場合約0.2ｇとなるよう白金水溶液を調
整する。これを600℃気流中で約２時間焼成して
作成した。 The aqueous platinum solution is adjusted so that the supported amount of platinum is approximately 0.3 g for catalyst A and approximately 0.2 g for catalyst B. This was baked in an air stream at 600°C for about 2 hours.
以上説明したように本発明によれば次のような
効果が期待できる。 As explained above, according to the present invention, the following effects can be expected.
触媒体を２つに分割することにより、触媒体
の過熱による触媒担体の割れ、クラツク、軟化
等の破壊を無くし、低温で燃焼させるため触媒
活性の劣化を遅くすることができる。−触媒体
の長寿命化。 By dividing the catalyst body into two parts, destruction of the catalyst carrier such as cracking, cracking, and softening due to overheating of the catalyst body can be eliminated, and deterioration of the catalyst activity can be slowed down because the catalyst is burned at a low temperature. - Longer life of the catalyst.
触媒体の前後から放射する赤外副射線を効率
的に水に熱変換可能な構造を採つているため、
触媒体から発生する熱を有効に利用することが
出来、熱交換効率の良い湯沸器の開発が可能で
ある。 Because it has a structure that can efficiently convert infrared sub-rays emitted from the front and back of the catalyst into water,
The heat generated from the catalyst can be used effectively, making it possible to develop a water heater with high heat exchange efficiency.
図面は本発明の一実施例である触媒燃焼湯沸器
の断面図である。
２，６……小孔、３……触媒体Ａ、５……燃焼
体Ｂ、９……熱交換器、１０……熱交換パイプ。
The drawing is a sectional view of a catalytic combustion water heater that is an embodiment of the present invention. 2, 6...Small hole, 3...Catalyst body A, 5...Combustion body B, 9...Heat exchanger, 10...Heat exchange pipe.
Claims (1)
化触媒を担持させてなる触媒体上にガス燃料ある
いは気化させた液体燃料を燃焼空気と共に供給し
て、触媒体上で触媒燃焼させる燃焼器を熱源とし
た湯沸器において、二個の触媒体を直列に配置さ
せ、触媒体間と後部に位置する触媒体の直後もし
くは後方に水への熱交換器を設置したことを特徴
とする触媒燃焼湯沸器。 ２ 燃料気流の流れに対して上流に位置している
触媒体に供給される燃焼空気量は理論空気量より
少なくさせ、その後に空気量を増加させ、下流に
位置している触媒体には理論空気量と等しいか、
あるいはそれ以上の空気量を供給したことを特徴
とする特徴請求の範囲第１項記載の触媒燃焼湯沸
器。 ３ 耐熱材料としてはムライト、α−アルミナ、
コーデイエライト、ムライト−ジルコニア、α−
アルミナ−ジルコニア、コーデイエライト−ジル
コニア、ムライト−ω−アルミナ炭化硅素および
窒化硅素などのセラミツクスを使用したことを特
徴とする特許請求の範囲第１項記載の触媒燃焼湯
沸器。 ４ 酸化触媒としては白金、パラジウム、ロジウ
ム、ルテニウムおよびイリジウム等の白金族金属
のうち少なくとも１種類以上組み合せたもの、ま
たはコバルト、ニツケル、鉄、マンガン、銅、ク
ロムおよび亜鉛等の遷移金属の酸化物のうち少な
くとも１種類以上組み合せたもの、あるいは白金
族金属と遷移金属酸化物を組み合せたものを用い
たことを特徴とする特許請求の範囲第１項記載の
触媒燃焼湯沸器。[Claims] 1. Gaseous fuel or vaporized liquid fuel is supplied together with combustion air onto a catalyst body made of a heat-resistant inorganic member having a plurality of small holes and supporting an oxidation catalyst. In a water heater that uses a combustor that performs catalytic combustion as a heat source, two catalyst bodies are arranged in series, and a heat exchanger for water is installed between the catalyst bodies and immediately after or behind the catalyst body located at the rear. A catalytic combustion water heater characterized by: 2 The amount of combustion air supplied to the catalyst body located upstream with respect to the flow of fuel airflow is made smaller than the theoretical air amount, and then the air amount is increased, and the amount of combustion air supplied to the catalyst body located downstream is made to be less than the theoretical air amount. Is it equal to the amount of air?
2. The catalytic combustion water heater according to claim 1, characterized in that an amount of air greater than or equal to that amount is supplied. 3. Mullite, α-alumina,
cordierite, mullite-zirconia, α-
The catalytic combustion water heater according to claim 1, characterized in that ceramics such as alumina-zirconia, cordierite-zirconia, mullite-ω-alumina silicon carbide, and silicon nitride are used. 4. The oxidation catalyst is a combination of at least one of platinum group metals such as platinum, palladium, rhodium, ruthenium, and iridium, or oxides of transition metals such as cobalt, nickel, iron, manganese, copper, chromium, and zinc. The catalytic combustion water heater according to claim 1, characterized in that a combination of at least one of these or a combination of a platinum group metal and a transition metal oxide is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1875181A JPS57131957A (en) | 1981-02-09 | 1981-02-09 | Water heater by catalytic combustion burning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1875181A JPS57131957A (en) | 1981-02-09 | 1981-02-09 | Water heater by catalytic combustion burning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57131957A JPS57131957A (en) | 1982-08-16 |
| JPS6312225B2 true JPS6312225B2 (en) | 1988-03-17 |
Family
ID=11980345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1875181A Granted JPS57131957A (en) | 1981-02-09 | 1981-02-09 | Water heater by catalytic combustion burning |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57131957A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01223528A (en) * | 1988-03-02 | 1989-09-06 | Hitachi Ltd | Method and device for finding trouble of touch panel |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3318003A1 (en) * | 1983-05-18 | 1984-02-02 | Rudolf Dipl.-Ing. 5411 Hilgert Schulte | Low-temperature heating plant with non-toxic, environmentally friendly exhaust gas, consisting of a catalyst as heat producer, a temperature limiter and also a heat exchanger |
| JPS6099954A (en) * | 1983-11-04 | 1985-06-03 | Daido Steel Co Ltd | Hot-water supplier |
| JPS63207911A (en) * | 1987-02-23 | 1988-08-29 | Asahi Glass Co Ltd | fluid heating device |
| JPH05761Y2 (en) * | 1987-03-09 | 1993-01-11 | ||
| GB2260279A (en) * | 1991-10-11 | 1993-04-14 | Ford Motor Co | Catalytic converter |
| GB2274076A (en) * | 1992-12-31 | 1994-07-13 | Ford Motor Co | Engine exhaust system |
| EP0798512B1 (en) * | 1996-03-25 | 2005-02-16 | Matsushita Electric Industrial Co., Ltd. | Combustion apparatus |
| DE69816326T2 (en) * | 1997-10-16 | 2004-04-22 | Toyota Jidosha K.K., Toyota | CATALYTIC COMBUSTION HEATER |
| JP3863979B2 (en) * | 1997-10-20 | 2006-12-27 | 株式会社日本自動車部品総合研究所 | Catalytic combustion heating device |
| JP4747469B2 (en) * | 2001-09-10 | 2011-08-17 | トヨタ自動車株式会社 | Combustion device |
| ITCO20100005A1 (en) * | 2010-01-27 | 2011-07-28 | Giacomini Spa | "COMBUSTOR FOR HYDROGEN COMBUSTION ON A CATALYZER AND BOILER FOR SUCH COMBUSTERS" |
| CN104713082B (en) * | 2013-12-17 | 2018-03-23 | 海尔集团公司 | Staged combustion device of gas water heater |
-
1981
- 1981-02-09 JP JP1875181A patent/JPS57131957A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01223528A (en) * | 1988-03-02 | 1989-09-06 | Hitachi Ltd | Method and device for finding trouble of touch panel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57131957A (en) | 1982-08-16 |
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