JPS6313083B2 - - Google Patents
Info
- Publication number
- JPS6313083B2 JPS6313083B2 JP56081769A JP8176981A JPS6313083B2 JP S6313083 B2 JPS6313083 B2 JP S6313083B2 JP 56081769 A JP56081769 A JP 56081769A JP 8176981 A JP8176981 A JP 8176981A JP S6313083 B2 JPS6313083 B2 JP S6313083B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- burner
- combustion chamber
- hot air
- wire mesh
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 50
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 8
- 229910052723 transition metal Inorganic materials 0.000 claims description 4
- 150000003624 transition metals Chemical class 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 14
- 239000000203 mixture Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 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
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0488—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using fluid fuel
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Direct Air Heating By Heater Or Combustion Gas (AREA)
- Gas Burners (AREA)
Description
【発明の詳細な説明】
本発明は温風暖房器具、特に室内開放型温風暖
房装置の改良に関するもので、燃焼排気ガスのク
リーン化を図るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a hot air heating device, particularly an indoor open type hot air heating device, and is intended to make combustion exhaust gas cleaner.
従来の家庭用燃焼器具のバーナはブンゼンバー
ナが用いられていたのでNOx値が高いといつた
欠点を有していた。従つて、暖房器具等の長時間
使用する器具では、シユバンクバーナ等の予混合
バーナを用い低NOx化を図つていた。 Conventional burners for household combustion appliances used Bunsen burners, which had the disadvantage of high NO x values. Therefore, in appliances that are used for long periods of time, such as heating appliances, a premix burner such as a sybank burner has been used to reduce NOx .
しかし、シユバンクバーナは、炎口部を形成す
るセラミツクプレートの熱容量が大きいので、点
着火時の安定燃焼に達する時間が長い、気流が燃
焼に悪影響するという欠点を有しているので、室
内開放型温風暖房器具ではブンゼンバーナを用い
るものが多い。 However, because the heat capacity of the ceramic plate that forms the flame opening is large, shubank burners have the disadvantage that it takes a long time to reach stable combustion upon ignition, and that the airflow has a negative effect on combustion, so they cannot be opened indoors. Many hot air heaters use Bunsen burners.
前記シユバンクバーナの欠点を補い、さらに低
NOx化を図るものとして、第２図に示す金網バ
ーナが考えられる。金網バーナ１０１はガスノズ
ル１０２から噴出した燃料とそのエゼクター効果
で吸引された１次空気が混合し、予混合気とし
て、混合気室１０３を経て金網炎口部１０４で表
面燃焼を行う。金網炎口部１０４の温度を高温で
一定に保ち安定燃焼を保つために、金網炎口部１
０４の内側にアルミナ棒１０５が設けられてお
り、かつ、赤熱した金網炎口部１０４から外周に
輻射熱を効果的にとるために、金網バーナ１０１
の外周はガラス筒１０６で構成されている。この
金網バーナ１０１はシユバンクバーナに比較して
炎口部の熱容量が小さいので負荷を小さく出来る
点と熱輻射が効果的に行なえるので火炎温度が低
く低NOx化が図れるものである。尚、１０７は
燃焼室、１０８は１次空気口が詰つた時１次空気
不足を補う補助空気口で、１０９は点火プラグで
ある。 It compensates for the shortcomings of the above-mentioned Shubank burner and has an even lower
A wire mesh burner shown in Figure 2 can be considered as a device for reducing NO x . In the wire mesh burner 101, the fuel ejected from the gas nozzle 102 and the primary air sucked in by its ejector effect are mixed, and as a premixture, the mixture passes through the mixture chamber 103 and performs surface combustion at the wire mesh flame port 104. In order to maintain stable combustion by keeping the temperature of the wire mesh flame port 104 constant at a high temperature, the wire mesh flame port 104 is
An alumina rod 105 is provided inside the wire mesh burner 101 to effectively capture radiant heat from the red-hot wire mesh burner port 104 to the outer periphery.
The outer periphery of the glass tube 106 is made up of a glass tube 106. This wire mesh burner 101 has a small heat capacity at the burner opening compared to a schwanbunk burner, so the load can be reduced, and heat radiation can be carried out effectively, so the flame temperature is low and NO x can be reduced. Note that 107 is a combustion chamber, 108 is an auxiliary air port that compensates for the lack of primary air when the primary air port is clogged, and 109 is a spark plug.
しかしながら、この表面燃焼を行う金網バーナ
もシユバンクバーナと同様に外気流の影響を受け
燃焼性が悪化しやすい、排気ガス中のNOxに占
める人体への影響が明らかなNO2の割合が大き
いといつた欠点を有するものである。 However, like the bank burner, wire mesh burners that perform surface combustion tend to have poor combustibility due to the influence of outside airflow, and NO2 , which has a clear effect on the human body, accounts for a large proportion of NOx in the exhaust gas. It has the following drawbacks.
本発明は、前記欠点を改良した温風暖房器具を
提供するものである。 The present invention provides a hot air heater that improves the above-mentioned drawbacks.
以下、本発明の一実施例について第１図に基づ
いて説明する。 Hereinafter, one embodiment of the present invention will be described based on FIG. 1.
第１図は本発明の温風暖房器具の原理を示す側
断面図である。 FIG. 1 is a side sectional view showing the principle of the hot air heating device of the present invention.
図中、１は温風暖房器具のケーシング、２はバ
ーナであり、ガスノズル３と対向して設けられた
１次空気口４、混合管５、混合気室６、燃焼筒７
の内側に金網で構成された炎口部８、金属板で形
成された燃焼筒７の外筒９、２次空気の流入を防
止する密閉構造とした燃焼室１０で構成されてい
る。燃焼室１０の後流の排気ガス通路中にラス
網、金網等からなる遷移金属系の金属体１１が設
けられている。 In the figure, 1 is a casing of a hot air heater, 2 is a burner, and is provided with a primary air port 4 facing a gas nozzle 3, a mixing pipe 5, a mixture chamber 6, and a combustion tube 7.
The combustion chamber 10 is comprised of a flame port 8 made of a wire mesh inside, an outer cylinder 9 of the combustion tube 7 made of a metal plate, and a combustion chamber 10 having a sealed structure to prevent the inflow of secondary air. A transition metal-based metal body 11 made of a lath mesh, wire mesh, etc. is provided in the exhaust gas passage downstream of the combustion chamber 10.
送風機１２によつて、吸込口１３から吸引され
た空気は、ガイド板１４によつて燃焼ガスを吸引
し燃焼筒７の外周の温風通路１５を経て、吹出し
口１６から送風される。 The air sucked in from the suction port 13 by the blower 12 sucks combustion gas through the guide plate 14, passes through the hot air passage 15 on the outer periphery of the combustion tube 7, and is blown from the blowout port 16.
１７は第１ガス弁、１８はガバナー、１９は第
２ガス弁で、制御回路２０によつて点火プラグ２
１から放電・着火し、燃焼検知素子２２の出力を
検知し、燃焼を制御するものである。 17 is a first gas valve, 18 is a governor, 19 is a second gas valve, and the control circuit 20 controls the spark plug 2.
1, discharge and ignite, detect the output of the combustion detection element 22, and control combustion.
上記構成において、ガスノズル３から噴出した
ガスは、燃焼に必要な空気を１次空気口４から１
次空気として吸引し、混合管５で混合しながら混
合気室６に導かれる。混合気は金網で構成された
炎口部８から燃焼室１０内へ噴出されると同時に
点火プラグ２１で放電、着火し、炎口部８で表面
燃焼を行う。炎口部８は金網で形成されているの
でその熱容量は小さく、さらに、燃焼筒７の外筒
９は金属板で構成されているので輻射熱は少な
く、低負荷燃焼時にも燃焼を良好に維持する炎口
温度が保たれる。高負荷燃焼時には、燃焼筒７の
外筒１０の外周が温風通路１５になつているの
で、輻射熱をとらなくても冷却され炎口部８が異
常に高温になり、バツクフアイヤーを起こすこと
はない。 In the above configuration, the gas ejected from the gas nozzle 3 supplies air necessary for combustion to the primary air port 4.
The air is then sucked in as air, and mixed in the mixing tube 5 while being introduced into the air mixture chamber 6. The air-fuel mixture is ejected into the combustion chamber 10 from the flame port 8 made of wire mesh, and at the same time is discharged and ignited by the spark plug 21, and surface combustion occurs in the flame port 8. Since the flame port 8 is formed of a wire mesh, its heat capacity is small.Furthermore, since the outer cylinder 9 of the combustion tube 7 is formed of a metal plate, radiant heat is small, and combustion is maintained well even during low-load combustion. Flame temperature is maintained. During high-load combustion, the outer periphery of the outer cylinder 10 of the combustion tube 7 serves as a hot air passage 15, so it is cooled without taking radiant heat, and the flame opening 8 does not become abnormally high temperature and cause a backfire. .
さらに、燃焼室１０の後流の排ガス通路中にス
テンレス鋼、モリブデン鋼、鉄―クロム鋼等の遷
移金属系の金網、ラス網等の金属体１１がおよそ
500℃〜700℃の高温雰囲気中に設けられているの
で、金属体１１が還元触媒となり、排気ガス中の
NO2がNOに還元される。 Further, in the exhaust gas passage downstream of the combustion chamber 10, a metal body 11 such as a wire mesh or lath mesh made of a transition metal such as stainless steel, molybdenum steel, or iron-chromium steel is approximately installed.
Since it is installed in a high temperature atmosphere of 500°C to 700°C, the metal body 11 acts as a reduction catalyst and reduces the amount of exhaust gas.
NO 2 is reduced to NO.
尚、金属体１１は、送風機１２の送風による燃
焼室１０内での気流の乱れを防ぐことができ、特
に低負荷燃焼時に問題となるCOガスの発生増大
を防止できる。 Note that the metal body 11 can prevent the air flow in the combustion chamber 10 from being disturbed by the air blown by the blower 12, and can particularly prevent an increase in the generation of CO gas, which is a problem during low-load combustion.
さらに、表面燃焼バーナの燃焼筒外筒を金属板
で形成することによつて、従来のガラス筒に比較
してコスト的に低減できるとともに、温風暖房器
具として燃焼量の可変にも対応できる。 Furthermore, by forming the combustion cylinder outer cylinder of the surface combustion burner with a metal plate, the cost can be reduced compared to a conventional glass cylinder, and the combustion amount can be varied as a hot air heating device.
燃焼室１０は空気の流入のできない密閉構造に
したので、送風機１２による燃焼室１０内の気流
の影響を防止し、燃焼性の悪化を防止していると
共に、バイパス空気として補助空気が入らないの
で、前記金属体１１と接触する排気ガス中のO2
濃度が低下するので、NO→NO2への酸化が少な
く、かつ、還元効率も向上し低NO2化が達成さ
れる。 Since the combustion chamber 10 has a sealed structure that prevents air from entering, it prevents the influence of the airflow in the combustion chamber 10 by the blower 12 and prevents deterioration of combustibility, and also prevents auxiliary air from entering as bypass air. , O 2 in the exhaust gas that comes into contact with the metal body 11
Since the concentration decreases, there is less oxidation from NO to NO 2 , and reduction efficiency also improves, achieving low NO 2 .
このように本発明は金網等で炎口部を形成し、
燃焼室の後流に金属体を設け均圧化を図り低負荷
の予混合表面燃焼を可能としたので、予混合低温
燃焼を達成し低NOx燃焼にできる。 In this way, the present invention forms the flame opening with a wire mesh or the like,
A metal body is installed downstream of the combustion chamber to equalize the pressure and enable low-load premixed surface combustion, achieving premixed low-temperature combustion and low NO x combustion.
また上記金属体は遷移金属系なので、燃焼排ガ
ス中のNO2をNOに還元し、かつ燃焼室は２次空
気が流入しないので、燃焼時に発生するNOが
NO2に酸化される率を少なくでき、かつ前記金
属体による還元率を向上させ、人体へ悪影響を及
ぼすNO2の低いものにできる。 In addition, since the metal body is transition metal-based, it reduces NO 2 in the combustion exhaust gas to NO, and since no secondary air flows into the combustion chamber, the NO generated during combustion is reduced.
The rate of oxidation to NO 2 can be reduced, the reduction rate by the metal body can be improved, and NO 2, which has a negative effect on the human body, can be reduced.
さらにバーナの炎口部は熱容量が小さく、かつ
温風通路との区画をなすバーナの仕切は金属板で
あるから、輻射熱は少なくて炎口温度が適切に保
たれ低負荷燃焼時にも燃焼を良好に維持できると
ともに高負荷燃焼時には温風通路により冷却され
炎口部が異常に高温になり、バツクフアイヤーを
起こすことなく安定した燃焼ができる。 Furthermore, the burner's flame opening has a small heat capacity, and the burner partition that separates it from the hot air passage is a metal plate, so there is little radiant heat and the flame mouth temperature is maintained at an appropriate level, resulting in good combustion even during low-load combustion. At the same time, during high-load combustion, the hot air passage cools the flame opening to an abnormally high temperature, allowing stable combustion without causing backfire.
なお、本発明の一実施例として筒状のバーナに
ついて説明したが、バーナの形状、燃焼室の構造
についてはこれらにとらわれるものでないことは
いうまでもない。 Although a cylindrical burner has been described as an embodiment of the present invention, it goes without saying that the shape of the burner and the structure of the combustion chamber are not limited thereto.
第１図は本発明の温風暖房装置の一実施例を示
す側断面図、第２図は従来例のバーナを示す断面
図である。
２……バーナ、７……燃焼筒、８……炎口部、
９……外筒、１０……燃焼室、１１……金属体、
１２……送風機、１５……温風通路。
FIG. 1 is a side sectional view showing an embodiment of the hot air heating device of the present invention, and FIG. 2 is a sectional view showing a conventional burner. 2... Burner, 7... Combustion tube, 8... Burner port,
9...Outer cylinder, 10...Combustion chamber, 11...Metal body,
12...Blower, 15...Hot air passage.
Claims (1)
部で形成され、２次空気の流入しない燃焼室とこ
の燃焼室とは反対側に位置して予混合ガスの通る
間隔を形成して前記炎口部に相対向させた金属板
とを有するバーナと、このバーナの金属板に相対
向して形成し、かつ吹出し口へ通じる温風通路
と、前記燃焼室の後流に設けた金網等の遷移金属
系の金属体とからなる温風暖房装置。 ２ 炎口部を筒状の網で形成し、かつ金属板を外
筒にした特許請求の範囲第１項記載の温風暖房装
置。[Claims] 1. A combustion chamber formed by a flame port such as a wire mesh that burns the premixed gas on the surface and into which secondary air does not flow; and a combustion chamber located on the opposite side of the combustion chamber through which the premixed gas passes. a burner having a metal plate opposed to the flame opening with a gap therebetween; a hot air passage formed opposite to the metal plate of the burner and leading to the outlet; and a rear part of the combustion chamber. A hot air heating device consisting of a transition metal metal body such as a wire mesh installed in a stream. 2. The hot air heating device according to claim 1, wherein the flame opening is formed of a cylindrical mesh and a metal plate is used as the outer cylinder.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56081769A JPS57198947A (en) | 1981-05-27 | 1981-05-27 | Hot air type room heater |
| PCT/JP1982/000202 WO1982004303A1 (en) | 1981-05-27 | 1982-05-27 | Combustion device for suppressing exhaust of nitrogen oxide and preventing incomplete combustion |
| GB08301979A GB2111181B (en) | 1981-05-27 | 1982-05-27 | Combustion device for suppressing exhaust of nitrogen oxide and preventing incomplete combustion |
| AU84597/82A AU550281B2 (en) | 1981-05-27 | 1982-05-27 | Combustion device for suppressing exhaust of nitrogen oxide and preventing incomplete combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56081769A JPS57198947A (en) | 1981-05-27 | 1981-05-27 | Hot air type room heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57198947A JPS57198947A (en) | 1982-12-06 |
| JPS6313083B2 true JPS6313083B2 (en) | 1988-03-24 |
Family
ID=13755664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56081769A Granted JPS57198947A (en) | 1981-05-27 | 1981-05-27 | Hot air type room heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57198947A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6074314B2 (en) * | 2013-04-22 | 2017-02-01 | 細山熱器株式会社 | Hot air generator for melting snow |
-
1981
- 1981-05-27 JP JP56081769A patent/JPS57198947A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57198947A (en) | 1982-12-06 |
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