JP3345307B2 - Hot air heater - Google Patents
Hot air heaterInfo
- Publication number
- JP3345307B2 JP3345307B2 JP19953597A JP19953597A JP3345307B2 JP 3345307 B2 JP3345307 B2 JP 3345307B2 JP 19953597 A JP19953597 A JP 19953597A JP 19953597 A JP19953597 A JP 19953597A JP 3345307 B2 JP3345307 B2 JP 3345307B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- combustion gas
- burner
- air heater
- cover
- 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 - Fee Related
Links
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 90
- 239000000567 combustion gas Substances 0.000 claims description 44
- 238000002485 combustion reaction Methods 0.000 claims description 42
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000002737 fuel gas Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 239000000758 substrate Substances 0.000 description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 4
- 229910017604 nitric acid Inorganic materials 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 102220579497 Macrophage scavenger receptor types I and II_F23C_mutation Human genes 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- VEUKJXRCHYAIAW-UHFFFAOYSA-N [Nb].[K] Chemical compound [Nb].[K] VEUKJXRCHYAIAW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- UKDIAJWKFXFVFG-UHFFFAOYSA-N potassium;oxido(dioxo)niobium Chemical compound [K+].[O-][Nb](=O)=O UKDIAJWKFXFVFG-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- 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
- Direct Air Heating By Heater Or Combustion Gas (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】本発明は温風暖房器、特に器
外に排出される燃焼ガス中の窒素酸化物の濃度を低減さ
せる手段を備えた温風暖房器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warm air heater, and more particularly to a warm air heater provided with a means for reducing the concentration of nitrogen oxides in combustion gas discharged outside the device.
【０００２】[0002]
【従来の技術】従来、ガス供給路から供給される燃料ガ
スを燃焼させるバーナと、該バーナの炎を囲う燃焼カバ
ーと、該燃焼カバーを囲う燃焼筐と、器外空気が吸入さ
れる吸入孔と、該バーナの燃焼により生じる燃焼ガスが
排出される燃焼ガス排出経路と、空気吸入及び燃焼ガス
排出を行う送風ファンとを有する温風暖房器が知られて
いる。前記燃焼ガス中には酸性雨や光化学スモッグ等の
原因物質である窒素酸化物が含有されており、かかる温
風暖房器において窒素酸化物濃度低減のための処理がさ
れないまま燃焼ガスが器外に排出されると環境保全の観
点から好ましくない。2. Description of the Related Art Conventionally, a burner for burning fuel gas supplied from a gas supply passage, a combustion cover surrounding a flame of the burner, a combustion case surrounding the combustion cover, and a suction hole through which outside air is sucked. A hot air heater having a combustion gas discharge path through which a combustion gas generated by combustion of the burner is discharged, and a blower fan that performs air suction and discharge of the combustion gas is known. The combustion gas contains nitrogen oxide which is a causative substance such as acid rain and photochemical smog, and the combustion gas is discharged to the outside without treatment for reducing the nitrogen oxide concentration in the hot air heater. If discharged, it is not preferable from the viewpoint of environmental conservation.
【０００３】[0003]
【発明が解決しようとする課題】前述のような不都合を
解消するために、本発明は器外に排出される燃焼ガス中
の窒素酸化物の濃度を低減させる手段を備えた温風暖房
器を提供することを目的とする。SUMMARY OF THE INVENTION In order to solve the above-mentioned inconveniences, the present invention relates to a hot air heater provided with a means for reducing the concentration of nitrogen oxides in the combustion gas discharged outside the device. The purpose is to provide.
【０００４】[0004]
【課題を解決するための手段】前記課題を解決するため
の本発明の温風暖房器は、前記温風暖房器に、紫外線照
射により活性化されて窒素酸化物を分解及び酸化する窒
素酸化物処理手段を燃焼ガス排出経路に備え、該窒素酸
化物処理手段にバーナの炎の発する紫外線が照射される
ように燃焼カバー及び燃焼筐の壁面に紫外線透過手段を
備えることを特徴とする。According to the present invention, there is provided a warm air heater comprising: a nitrogen oxide which is activated by ultraviolet irradiation to decompose and oxidize nitrogen oxide; A processing means is provided in the combustion gas discharge path, and an ultraviolet transmission means is provided on the wall surface of the combustion cover and the combustion case so that the nitrogen oxide processing means is irradiated with ultraviolet rays emitted from the burner flame.
【０００５】前記窒素酸化物処理手段とは、紫外線照射
によって窒素酸化物を分解及び酸化して窒素、硝酸等へ
変化させるのに高い活性を示すものを指し、例えば酸化
チタン、酸化亜鉛、チタン酸ストロンチウム、チタン酸
カリウム、ニオブ酸カリウムを含む。[0005] The above-mentioned nitrogen oxide treatment means refers to a means exhibiting a high activity of decomposing and oxidizing nitrogen oxides by irradiation with ultraviolet rays to change them into nitrogen, nitric acid and the like. Includes strontium, potassium titanate, potassium niobate.
【０００６】前記紫外線透過手段とは、紫外線領域の光
を大きく減衰させることなく通過させるものを指し、例
えば石英ガラス窓、スリットを含む。[0006] The ultraviolet transmitting means means a means for transmitting light in the ultraviolet region without greatly attenuating the light, and includes, for example, a quartz glass window and a slit.
【０００７】本発明の温風暖房器によれば、ガス供給路
から供給される燃料ガスがバーナで燃焼されて燃焼ガス
が生じ、該燃焼ガスは送風ファンにより燃焼ガス排出経
路を通過して器外に排出される。バーナの炎の発する紫
外線が紫外線透過手段を通じて燃焼カバー及び燃焼筐の
外に通過し、前記燃焼ガス排出経路に備えられている窒
素酸化物処理手段に照射される。その紫外線照射により
前記窒素酸化物処理手段が活性化されて窒素酸化物を分
解及び酸化するので前記燃焼ガス排出経路を通過して器
外に排出される燃焼ガス中の窒素酸化物濃度が低減され
る。According to the warm air heater of the present invention, the fuel gas supplied from the gas supply path is burned by the burner to generate combustion gas, and the combustion gas passes through the combustion gas discharge path by the blower fan and is discharged from the heater. It is discharged outside. Ultraviolet rays emitted from the flame of the burner pass through the ultraviolet transmission means to the outside of the combustion cover and the combustion case, and are irradiated to the nitrogen oxide treatment means provided in the combustion gas discharge path. The ultraviolet irradiation activates the nitrogen oxide treating means to decompose and oxidize nitrogen oxides, so that the concentration of nitrogen oxides in the combustion gas discharged through the combustion gas discharge path and discharged outside the device is reduced. You.
【０００８】前記窒素酸化物処理手段を活性化させる紫
外線光源としては低圧水銀灯やキセノンランプ等が考え
られるが、これらの光源を温風暖房器内に設置すると、
器体のコンパクト性や、製造コストの面で不利である。
本発明の温風暖房器によれば、紫外線光源としてバーナ
の炎を用いるのでこのような面で有利である。A low-pressure mercury lamp, a xenon lamp or the like can be considered as an ultraviolet light source for activating the nitrogen oxide processing means. When these light sources are installed in a warm air heater,
This is disadvantageous in terms of the compactness of the body and the manufacturing cost.
According to the warm air heater of the present invention, the flame of the burner is used as the ultraviolet light source, which is advantageous in this aspect.
【０００９】[0009]
【発明の実施の形態】本発明の実施形態を図１及び図２
を用いて説明する。図１、図２は各々本発明第一、第二
の実施形態の温風暖房器の構成図である。1 and 2 show an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 and FIG. 2 are configuration diagrams of a hot air heater according to first and second embodiments of the present invention, respectively.
【００１０】まず図１を参照しながら第一実施形態の温
風暖房器について説明する。温風暖房器本体１内部には
ガス供給路（図示せず）から供給される燃料ガスを燃焼
するバーナ２があり、該バーナ２はイグナイタ３により
点火される。燃焼カバー４はバーナ２の炎を囲うよう
に、燃焼筐５は該燃焼カバー４を囲うように各々設置さ
れている。燃焼ガス排出経路６はバーナ２の燃焼により
生じる燃焼ガス（黒矢印）を排出する。空気（白抜矢
印）は吸入孔７を通じて吸入され、空気供給経路８と空
気排出経路９とに分流される。空気供給経路８を通過す
る空気は、その一部分は燃焼カバー４に開設された孔
（図示せず）を通って燃焼カバー４内に供給されてバー
ナ２の燃焼を維持するのに用いられ、他の部分は燃焼カ
バー４の上端付近で燃焼ガスと混合される。空気排出経
路９を通過する空気は燃焼ガス排出経路６の途中で燃焼
ガスと混合される。送風ファン１０は燃焼ガス排出及び
空気吸入を行う。燃焼カバー４及び燃焼筐５に設けられ
た紫外線透過手段としての石英ガラス窓１１は、バーナ
２の炎の発する紫外線（波線矢印）を通過させて燃焼ガ
ス排出経路６に設けられた窒素酸化物処理手段としての
基盤１２に照射させる。石英ガラスは紫外線を通過させ
るとともに耐熱性に優れているので、燃焼カバー４及び
燃焼筐５壁面のように温風暖房器使用時に高温となる箇
所に適用できる。基盤１２の表面は酸化チタンの塗布に
よる酸化チタンコーティング膜により被覆されている。
前記酸化チタンは紫外線照射により窒素酸化物の分解及
び酸化に高い活性を示すアナターゼ型酸化チタンを用い
てもよい。First, a hot air heater according to a first embodiment will be described with reference to FIG. Inside the hot air heater main body 1, there is a burner 2 for burning fuel gas supplied from a gas supply path (not shown), and the burner 2 is ignited by an igniter 3. The combustion cover 4 surrounds the flame of the burner 2, and the combustion housing 5 surrounds the combustion cover 4. The combustion gas discharge path 6 discharges a combustion gas (black arrow) generated by the combustion of the burner 2. Air (open arrows) is sucked through the suction holes 7 and is diverted to the air supply path 8 and the air discharge path 9. A part of the air passing through the air supply path 8 is supplied to the inside of the combustion cover 4 through a hole (not shown) formed in the combustion cover 4 to be used for maintaining the combustion of the burner 2. Is mixed with the combustion gas near the upper end of the combustion cover 4. The air passing through the air discharge path 9 is mixed with the combustion gas in the combustion gas discharge path 6. The blower fan 10 discharges combustion gas and sucks air. The quartz glass window 11 as an ultraviolet transmitting means provided in the combustion cover 4 and the combustion case 5 allows ultraviolet rays (dashed arrows) generated by the flame of the burner 2 to pass therethrough, and a nitrogen oxide treatment provided in the combustion gas discharge path 6. The substrate 12 as a means is irradiated. Since quartz glass allows ultraviolet rays to pass therethrough and has excellent heat resistance, it can be applied to places where the temperature becomes high when a hot air heater is used, such as the combustion cover 4 and the wall of the combustion case 5. The surface of the base 12 is covered with a titanium oxide coating film formed by applying titanium oxide.
The titanium oxide may be an anatase-type titanium oxide having a high activity in decomposing and oxidizing nitrogen oxides by ultraviolet irradiation.
【００１１】前記温風暖房器の作動時は送風ファン１０
が空気を吸入し、吸入された空気の一部が空気供給経路
８から燃焼カバー４に開設された孔を通って燃焼カバー
４内に供給され、バーナ２の燃焼状態が維持されてい
る。バーナ２の燃焼により生じた燃焼ガスは空気供給経
路８及び空気排出経路９を通過してきた空気と各々燃焼
カバー４上端付近及び混合されて温度が下げられてから
送風ファン１０により燃焼ガス排出経路６を通じて器外
に排出される。When the hot air heater is operating, the blower fan 10
Sucks air, a part of the sucked air is supplied from the air supply path 8 into the combustion cover 4 through a hole formed in the combustion cover 4, and the combustion state of the burner 2 is maintained. The combustion gas generated by the combustion of the burner 2 is mixed with the air passing through the air supply path 8 and the air discharge path 9 near the upper end of the combustion cover 4 and at a lower temperature, respectively. Is discharged out of the vessel.
【００１２】高温の燃焼ガスが急冷されると二酸化窒素
ＮＯ2 の発生量が増加することが知られており、これを
防ぐために燃焼ガスの急冷を防ぐことが望ましい。そこ
で燃焼カバー４の右肩部分には燃焼カバー４の上端から
排出される燃焼ガスの流れ方向に沿った所定範囲にわた
って図示しない孔が開設されている。この孔を通じて燃
焼ガスと空気供給経路８を通過する空気とが徐々に混合
されるので、燃焼ガスが徐冷される。また、燃焼筐５左
上部から下方に延びて燃焼ガス排出経路６と空気排出経
路９とを区別する部分が所定距離に渡り延長されてい
る。この延長により燃焼ガスと空気排出経路９を通過す
る空気とが燃焼筐５の壁面を介して十分に熱交換を行
い、両者間の温度差が減少されたうえで混合されるので
燃焼ガスは急冷されない。さらに、燃焼ガスが通過する
燃焼筐５の開孔部分の幅は所定の寸法に絞られている。
これにより空気供給経路８を通過する空気量が制限さ
れ、燃焼ガスが空気供給経路８を通過する過剰の空気に
よって急冷されない。It is known that when the high-temperature combustion gas is quenched, the generation amount of nitrogen dioxide NO 2 increases. To prevent this, it is desirable to prevent the quenching of the combustion gas. Therefore, a hole (not shown) is formed in the right shoulder portion of the combustion cover 4 over a predetermined range along the flow direction of the combustion gas discharged from the upper end of the combustion cover 4. Since the combustion gas and the air passing through the air supply path 8 are gradually mixed through the holes, the combustion gas is gradually cooled. Further, a portion extending downward from the upper left portion of the combustion housing 5 and distinguishing the combustion gas discharge path 6 from the air discharge path 9 is extended over a predetermined distance. By this extension, the combustion gas and the air passing through the air discharge path 9 sufficiently exchange heat through the wall surface of the combustion case 5 and are mixed after the temperature difference between them is reduced, so that the combustion gas is rapidly cooled. Not done. Further, the width of the opening of the combustion case 5 through which the combustion gas passes is narrowed to a predetermined dimension.
As a result, the amount of air passing through the air supply path 8 is limited, and the combustion gas is not quenched by excess air passing through the air supply path 8.
【００１３】前記温風暖房器の特徴は、燃焼カバー４及
び燃焼筐５壁面に石英ガラス窓１１（紫外線透過手段）
が備えられ、燃焼ガス排出経路６に酸化チタンが塗布さ
れた基盤１２（窒素酸化物処理手段）が備えられている
ことにある。A feature of the warm air heater is that a quartz glass window 11 (ultraviolet transmitting means) is provided on the wall surface of the combustion cover 4 and the combustion case 5.
And a base 12 (nitrogen oxide treatment means) coated with titanium oxide in the combustion gas discharge path 6.
【００１４】すなわちバーナ２の炎の発する紫外線が、
石英ガラス窓１１を通過して基盤１２に照射される。こ
れによって基盤１２表面に塗布された酸化チタンが活性
化されて燃焼ガスに含まれる窒素酸化物を分解及び酸化
するので、器外に排出される燃焼ガスの窒素酸化物の濃
度が低減される。That is, the ultraviolet rays emitted by the flame of the burner 2
The light passes through the quartz glass window 11 and irradiates the substrate 12. As a result, the titanium oxide applied to the surface of the base 12 is activated to decompose and oxidize nitrogen oxides contained in the combustion gas, so that the concentration of nitrogen oxides in the combustion gas discharged outside the vessel is reduced.
【００１５】次に図２を参照しながら第二の実施形態の
温風暖房器について説明する。参照番号１乃至１２は第
一の実施形態の温風暖房機と同一であるので説明を省略
する。ステンレス板表面を鏡面仕上げした反射鏡１３は
石英ガラス窓１１を通過してくる紫外線が反射されて基
盤１２に照射されるように燃焼ガス排出経路６に設けら
れている。Next, a hot air heater according to a second embodiment will be described with reference to FIG. Reference numerals 1 to 12 are the same as those of the warm air heater of the first embodiment, and thus description thereof is omitted. The reflecting mirror 13 having a mirror-finished surface of the stainless steel plate is provided in the combustion gas discharge path 6 so that ultraviolet rays passing through the quartz glass window 11 are reflected and radiated on the base 12.
【００１６】第二の実施形態が第一の実施形態の温風暖
房機と異なるのは、図２中波線矢印示のように石英ガラ
ス窓１１を通過してきた紫外線が直接ではなく反射鏡１
３により一度反射されてから基盤１２に照射される点で
ある。The difference between the second embodiment and the warm air heater of the first embodiment is that the ultraviolet light passing through the quartz glass window 11 is not directly reflected as shown by the dashed arrow in FIG.
3 is once reflected and then radiated onto the substrate 12.
【００１７】第二の実施形態においては基盤１２は燃焼
ガス排出経路６の下流側に位置しているので、第一の実
施形態と比較して高温による基盤１２の劣化が抑えられ
る。すなわち反射鏡１３を用いることによって基盤１２
を使用上都合のよい位置に移動することができる。ま
た、反射鏡１３の位置を変えたり、必要に応じてさらに
反射鏡を加えたりして、基盤１２の位置をさらに都合の
よい位置に移動させてもよい。本実施形態では反射鏡１
３としてステンレス板を用いたが、紫外線を反射させる
ような他の材料で反射鏡を作ってもよい。In the second embodiment, the base 12 is located on the downstream side of the combustion gas discharge path 6, so that the deterioration of the base 12 due to the high temperature is suppressed as compared with the first embodiment. That is, by using the reflecting mirror 13,
Can be moved to a convenient position for use. Further, the position of the base mirror 12 may be moved to a more convenient position by changing the position of the reflecting mirror 13 or adding a reflecting mirror as needed. In this embodiment, the reflecting mirror 1
Although a stainless steel plate was used as 3, a reflecting mirror may be made of another material that reflects ultraviolet rays.
【００１８】第一及び第二の実施形態の温風暖房器にお
いて紫外線透過手段として石英ガラス窓１１の代わり
に、基盤１２に照射される光の強度を上げ、窒素酸化物
処理能力をより活性化するために基盤１２或いは反射鏡
１３表面に焦点が定められた石英ガラスレンズを用いて
もよい。また、基盤１２に炎の紫外線が照射されるよう
に燃焼カバー４及び燃焼筐５の壁面にスリットを設ける
ようにしてもよい。In the warm air heaters of the first and second embodiments, instead of the quartz glass window 11 as the ultraviolet ray transmitting means, the intensity of the light applied to the base 12 is increased to further activate the nitrogen oxide treatment capacity. For this purpose, a quartz glass lens focused on the surface of the base 12 or the reflecting mirror 13 may be used. Further, slits may be provided on the wall surfaces of the combustion cover 4 and the combustion housing 5 so that the base 12 is irradiated with ultraviolet rays of the flame.
【００１９】基盤１２表面に塗布した物質は酸化チタン
であったが、紫外線照射によって活性化されて窒素酸化
物を分解及び酸化する他の物質、例えば酸化亜鉛、チタ
ン酸ストロンチウム、チタン酸カリウム、ニオブ酸カリ
ウム等を製造上の都合に応じて用いてもよい。The substance applied to the surface of the substrate 12 was titanium oxide, but other substances activated by ultraviolet irradiation to decompose and oxidize nitrogen oxides, such as zinc oxide, strontium titanate, potassium titanate, and niobium Potassium acid or the like may be used depending on the production convenience.
【００２０】基盤１２として表面に窒素酸化物を分解及
び酸化する物質を塗布したものを用いたが、都合に応じ
て表面に該物質を蒸着したものを用いてもよい。Although the substrate 12 has a surface coated with a substance capable of decomposing and oxidizing nitrogen oxides, a substrate having the surface deposited with the substance may be used as the case requires.
【００２１】なお、窒素酸化物の酸化により生じる硝酸
が基盤１２を腐食することが考えられる。そこで基盤１
２として前記物質の粉末と硝酸に対する耐蝕性に優れた
フッ素系樹脂の粉末とを機械的に混合して圧延して成形
したシートを用い、基盤１２の硝酸に対する耐蝕性を向
上させるようにしてもよい。It is conceivable that nitric acid generated by oxidation of nitrogen oxides corrodes the substrate 12. So foundation 1
As a second example, a sheet formed by mechanically mixing and rolling a powder of the substance and a fluorine-based resin powder having excellent corrosion resistance to nitric acid is used, and the corrosion resistance of the base 12 to nitric acid may be improved. Good.
【００２２】また、窒素酸化物が基盤１２に吸着される
時間が短過ぎて分解及び酸化が十分に行われないことが
考えられる。そこで基盤１２として前記物質の粉末と吸
着性に優れた活性炭の粉末とを機械的に混合して圧延し
て成形したシートを用い、基盤１２の吸着性を向上させ
るようにしてもよい。It is also conceivable that the time for which the nitrogen oxides are adsorbed on the substrate 12 is too short to sufficiently decompose and oxidize. Therefore, a sheet formed by mechanically mixing the powder of the substance and the powder of activated carbon having excellent adsorptivity and rolling the same may be used as the substrate 12 to improve the adsorptivity of the substrate 12.
【００２３】前記実施形態の温風暖房機においては、二
酸化窒素発生の一原因である燃焼ガスの急冷を防ぎ、さ
らに窒素酸化物処理手段を設けることにより器外に排出
される燃焼ガス中の窒素酸化物の濃度を低減させたが、
窒素酸化物処理手段を設けることのみにより器外に排出
される燃焼ガス中の窒素酸化物の濃度を低減させるよう
にしてもよい。In the warm air heater of the embodiment, the rapid cooling of the combustion gas, which is one of the causes of the generation of nitrogen dioxide, is prevented. Although the concentration of oxide has been reduced,
The concentration of nitrogen oxides in the combustion gas discharged outside the vessel may be reduced only by providing the nitrogen oxide treatment means.
【図１】本発明の第一の実施形態の温風暖房器の構成図FIG. 1 is a configuration diagram of a hot air heater according to a first embodiment of the present invention.
【図２】本発明の第二の実施形態の温風暖房器の構成図FIG. 2 is a configuration diagram of a hot air heater according to a second embodiment of the present invention.
１・・温風暖房器本体、２・・バーナ、４・・燃焼カバ
ー、５・・燃焼筐、６・・燃焼ガス排出経路、７・・吸
入孔、１１・・石英ガラス窓（紫外線透過手段）、１２
・・基盤（窒素酸化物処理手段）1. Hot air heater main body, 2. Burner, 4. Combustion cover, 5. Combustion casing, 6. Combustion gas discharge path, 7, Suction hole, 11, Quartz glass window (ultraviolet transmission means ), 12
..Bases (nitrogen oxide treatment means)
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F24H 3/04 301 F23C 11/00 312 F23C 11/00 ZAB ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) F24H 3/04 301 F23C 11/00 312 F23C 11/00 ZAB
Claims (1)
させるバーナと、該バーナの炎を囲う燃焼カバーと、該
燃焼カバーを囲う燃焼筐と、器外空気が吸入される吸入
孔と、該バーナの燃焼により生じる燃焼ガスが排出され
る燃焼ガス排出経路と、空気吸入及び燃焼ガス排出等を
行う送風ファンとを有する温風暖房器において、 紫外線照射により活性化されて窒素酸化物を分解及び酸
化する窒素酸化物処理手段を前記燃焼ガス排出経路に備
え、 前記窒素酸化物処理手段に前記バーナの炎の発する紫外
線が照射されるように前記燃焼カバー及び燃焼筐の壁面
に紫外線透過手段を備えることを特徴とする温風暖房
器。1. A burner for burning fuel gas supplied from a gas supply passage, a combustion cover surrounding a flame of the burner, a combustion housing surrounding the combustion cover, a suction hole through which outside air is sucked, In a warm air heater having a combustion gas discharge path through which combustion gas generated by combustion of the burner is discharged, and a blower fan that performs air suction and discharge of combustion gas, nitrogen oxides are decomposed by being activated by ultraviolet irradiation. And a nitrogen oxide treatment means for oxidizing the combustion gas discharge path, and an ultraviolet light transmission means on the wall surface of the combustion cover and the combustion housing so that the nitrogen oxide treatment means is irradiated with ultraviolet light emitted by the flame of the burner. A warm air heater characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19953597A JP3345307B2 (en) | 1997-07-25 | 1997-07-25 | Hot air heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19953597A JP3345307B2 (en) | 1997-07-25 | 1997-07-25 | Hot air heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1144458A JPH1144458A (en) | 1999-02-16 |
| JP3345307B2 true JP3345307B2 (en) | 2002-11-18 |
Family
ID=16409458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19953597A Expired - Fee Related JP3345307B2 (en) | 1997-07-25 | 1997-07-25 | Hot air heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3345307B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5122427B2 (en) * | 2008-12-09 | 2013-01-16 | 大阪瓦斯株式会社 | Fan heater |
-
1997
- 1997-07-25 JP JP19953597A patent/JP3345307B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1144458A (en) | 1999-02-16 |
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