JP2855664B2 - Infrared heater - Google Patents
Infrared heaterInfo
- Publication number
- JP2855664B2 JP2855664B2 JP1159612A JP15961289A JP2855664B2 JP 2855664 B2 JP2855664 B2 JP 2855664B2 JP 1159612 A JP1159612 A JP 1159612A JP 15961289 A JP15961289 A JP 15961289A JP 2855664 B2 JP2855664 B2 JP 2855664B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- burner
- heat
- burner element
- infrared heater
- 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 - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/12—Radiant burners
- F23D14/16—Radiant burners using permeable blocks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/10—Flame diffusing means
- F23D2203/105—Porous plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2212/00—Burner material specifications
- F23D2212/20—Burner material specifications metallic
- F23D2212/201—Fibres
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、形状・姿勢等、色々な形態を採用すること
の可能な金属からなる長繊維を使用した長繊維焼結板か
ら成るバーナエレメントを備えた赤外線ヒータに関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a burner element composed of a long fiber sintered plate using a long fiber made of a metal capable of adopting various forms such as shapes and postures. The present invention relates to an infrared heater having:
［従来の技術］ 従来、赤外線ヒータとしては以下のようなものが知ら
れている。[Prior Art] Conventionally, the following are known as infrared heaters.
カンタル線やニクロム線に通電すことにより線や面が
自己発熱するもの（特開昭62−113377号公報）。A wire or a surface which generates heat by energizing a Kanthal wire or a Nichrome wire (Japanese Patent Application Laid-Open No. 62-113377).
赤外線放射物質で被覆されたヒータに通電することに
より、放射物質が発熱するもの（特開昭62−2485号公
報，特開昭62−71188号公報）。A device in which a radiant material generates heat by energizing a heater coated with an infrared radiant material (JP-A-62-2485 and JP-A-62-71188).
赤外線放射物質の中にパイプを配設し、このパイプ中
の燃焼ガスなどの高温気体を流すことにより、放射物質
を加熱し発熱するもの（特開昭62−195880号公報，特開
昭63−123909号公報）。A pipe is arranged in an infrared radiating substance, and a high temperature gas such as a combustion gas in the pipe flows to heat the radiating substance to generate heat (Japanese Patent Application Laid-Open Nos. 62-195880 and 63-195880). No. 123909).
多数の貫通孔を有する赤外線放射板（多孔質セラミッ
クス等）から可燃性気体を噴出させ、放射板表面で燃焼
させることにより、放射板を加熱し発熱するもの（特開
昭62−138616号公報）。Combustible gas is emitted from an infrared radiation plate (porous ceramic, etc.) having a large number of through-holes and burns on the surface of the radiation plate, thereby heating the radiation plate to generate heat (Japanese Patent Laid-Open No. 62-138616). .
気体あるいは液体燃料により拡散燃焼を行い、それに
より発生する高温排ガスを下流の固体壁に衝突させ、そ
の壁を加熱し発熱するもの（特公昭51−41781号公
報）。Diffusion combustion using gaseous or liquid fuels, the high-temperature exhaust gas generated by the diffusion and collision against a downstream solid wall, and the wall is heated to generate heat (Japanese Patent Publication No. 51-41781).
［発明が解決しようとする課題］ しかしながら、加熱源として電気を利用するもの
（，）は、熱容量に対するコストが燃料に比べて著
しく高く、また広い面を均一に加熱することは難しいと
いう欠点がある。[Problems to be Solved by the Invention] However, those using electricity as a heating source (,) have the disadvantage that the cost for heat capacity is significantly higher than that of fuel, and it is difficult to uniformly heat a wide surface. .
また、加熱源として燃焼ガスを利用するものとして表
面燃焼方式（，）と固体壁加熱方式（）がある
が、前者の場合、従来は空隙率が最大でも50％程度であ
り、面負荷（単位面積・単位時間当りの熱量）を上げる
のが難しく、後者の場合、下流側の固体壁を加熱するの
で、熱の利用率が悪く、しかも大きな面の均一加熱には
不向きである。In addition, there are a surface combustion method (,) and a solid wall heating method () that use combustion gas as a heating source. In the former case, the porosity is conventionally at most about 50%, and the surface load (unit) It is difficult to increase the area / heat amount per unit time), and in the latter case, the solid wall on the downstream side is heated, so that the heat utilization rate is poor, and it is not suitable for uniform heating of a large surface.
本発明は叙上の点に鑑み、投入熱量に対して、有効に
放射エネルギに変換する割合が高く（放射効率、熱効率
が高く）、大きな面を均一に加熱でき、ランニングコス
トを低く抑えることの可能な赤外線ヒータを得ることを
目的とする。In view of the above, the present invention has a high conversion ratio of effective heat to radiant energy with respect to the input heat amount (high radiant efficiency and heat efficiency), can uniformly heat a large surface, and keeps running costs low. The aim is to obtain a possible infrared heater.
［課題を解決するための手段］ 本発明に係る赤外線ヒータは、ガス燃料と空気との混
合気体を供給するガス供給装置と、直径10〜50μm,長さ
10mm以上の金属からなる長繊維を使用し、空隙率を80〜
95％に設定した長繊維焼結板から成るバーナエレメント
と、このバーナエレメントの前面側に配置され該バーナ
エレメントにより整流されてその全面から均一に噴出す
るガスに着火させる点火手段とを備え、前記噴出するガ
ス流速を５〜30cm/secの範囲に設定されてなるものであ
る。[Means for Solving the Problems] An infrared heater according to the present invention comprises a gas supply device for supplying a mixed gas of gaseous fuel and air, a diameter of 10 to 50 μm, and a length of 10 to 50 μm.
Use long fibers made of metal of 10 mm or more, and porosity of 80 to
A burner element made of a long fiber sintered plate set to 95%, and an ignition means arranged on the front side of the burner element and igniting gas rectified by the burner element and uniformly jetted from the entire surface thereof; The flow velocity of the gas to be jetted is set in the range of 5 to 30 cm / sec.
［作 用］ 本発明においては、バーナエレメントが直径10〜50μ
m,長さ10mm以上の金属からなる長繊維を使用した空隙率
80〜95％の長繊維焼結板から形成され、ガス供給装置よ
り投入された混合気体を整流して全面から均一に噴出す
るので、混合気体のバーナエレメント部通過時の圧力損
失が減少し、バーナの背圧が減って面負荷を上げるのが
容易となり、大きな面の均一加熱が可能となる。加え
て、バーナエレメントの全面から均一に噴出するガス流
速が５〜30cm/secの範囲に設定されているので、着火さ
れたガスは、バーナエレメントの表面に火炎を付着させ
た状態で燃焼する。長繊維焼結板からなるバーナエレメ
ントの繊維直径を10〜50μｍとしたのは、前記運転条件
（ガス流速が５〜30cm/sec）の下でバーナエレメントの
表面に火炎を付着させた状態で燃焼させると、直径10μ
ｍ以下では繊維が溶けてしまい、また直径50μｍ以上だ
と均一な赤熱面が得られなくなるためである。[Operation] In the present invention, the burner element has a diameter of 10 to 50 μm.
Porosity using long fibers made of metal with a length of at least 10 mm
It is formed from a 80-95% long fiber sintered plate, rectifies the mixed gas supplied from the gas supply device and jets it uniformly from the entire surface, reducing the pressure loss when the mixed gas passes through the burner element. The back pressure of the burner is reduced, so that the surface load can be easily increased, and the large surface can be uniformly heated. In addition, since the flow velocity of gas uniformly ejected from the entire surface of the burner element is set in the range of 5 to 30 cm / sec, the ignited gas burns with a flame attached to the surface of the burner element. The reason why the fiber diameter of the burner element made of a long fiber sintered plate is 10 to 50 μm is that the combustion is performed in a state where a flame is adhered to the surface of the burner element under the above operating conditions (gas flow rate is 5 to 30 cm / sec). Let it be 10μ in diameter
When the diameter is less than 50 m, the fiber is melted, and when the diameter is more than 50 m, a uniform glowing surface cannot be obtained.
［実施例］ 以下、図示実施例により本発明を説明する。第１図は
本発明の一実施例に係る赤外線ヒータの正面図、第２図
はその側面図で、図において、１はガス燃料と空気との
混合気体を供給するガス供給装置、２はガス供給装置１
より投入された混合気体を整流して全面から均一に噴出
する平板状のバーナエレメントすなわち表面燃焼方式の
バーナ本体、３はバーナ本体２の前面側に配置されバー
ナ本体２を通過する混合気体に着火させる点火プラグで
あり、点火プラグ３にて着火された混合気体は、バーナ
本体２の表面に火炎を付着させた状態で燃焼する。[Examples] Hereinafter, the present invention will be described with reference to illustrated examples. FIG. 1 is a front view of an infrared heater according to one embodiment of the present invention, and FIG. 2 is a side view thereof. In the drawing, reference numeral 1 denotes a gas supply device for supplying a mixed gas of gas fuel and air; Supply device 1
A flat burner element that rectifies the supplied mixed gas and jets out uniformly from the entire surface, that is, a surface-burning burner body, 3 is disposed on the front side of the burner body 2 and ignites the mixed gas passing through the burner body 2 The mixed gas ignited by the ignition plug 3 burns with a flame adhered to the surface of the burner main body 2.
これを更に詳述すると、本実施例の赤外線ヒータは、
台車４上に搭載され、ガス供給装置１によって、ガスボ
ンベ５からのガスとブロワ６からの空気とを、これらの
噴出口の前方に配置したシェル７内にて所定の割合で混
合し、混合した気体をシェル７の前面部開口を覆って配
置固定した空隙率80〜95％を有する金属繊維の焼結板か
ら成るバーナ本体２を通して噴出させるようにしてい
る。また、ガス供給装置１にはガス供給経路と空気供給
経路の途中に、それぞれ電磁弁８と開閉弁９が設置さ
れ、電磁弁８の操作はブロワ６のON・OFFスイッチ10の
操作によって同時に行われるようになっているととも
に、開閉弁９の操作は操作レバー9aを手動操作すること
によって行われるようになっている。さらにON・OFFス
イッチ10は点火プラグ３の操作スイッチをも兼用してい
る。To explain this in more detail, the infrared heater of this embodiment is
The gas from the gas cylinder 5 and the air from the blower 6 are mounted on the trolley 4 and mixed by the gas supply device 1 at a predetermined ratio in a shell 7 disposed in front of these jet ports. The gas is blown out through the burner main body 2 made of a sintered plate of a metal fiber having a porosity of 80 to 95%, which is disposed and fixed over the front opening of the shell 7. The gas supply device 1 is provided with a solenoid valve 8 and an on-off valve 9 in the gas supply path and the air supply path, respectively, and the operation of the solenoid valve 8 is performed simultaneously by the operation of the ON / OFF switch 10 of the blower 6. The operation of the on-off valve 9 is performed by manually operating the operation lever 9a. Further, the ON / OFF switch 10 also serves as an operation switch for the ignition plug 3.
上述した構成を有する本実施例の赤外線ヒータにおい
て、バーナ本体２は、直径10〜50μm,長さ10mm以上の金
属からなる長繊維を焼結して形成した。また、ガスと空
気との可燃混合気体の空気過剰率（投入したガスが化学
反応して完全燃焼するに必要な空気量で投入空気量を除
した量）は1.0〜1.2の範囲に、通風時のバーナ本体表面
から噴出する可燃混合気体流速は５〜30cm/secの範囲
に、それぞれ設定した。これら設定値は第３図に示す実
験結果より得られたもので、このような運転条件の下で
バーナ本体２はその表面に火炎を付着させた赤熱状態で
燃焼する。In the infrared heater of the present embodiment having the above-described configuration, the burner main body 2 was formed by sintering a long fiber made of a metal having a diameter of 10 to 50 μm and a length of 10 mm or more. In addition, the excess air ratio of the combustible gas mixture of gas and air (the amount of input air divided by the amount of air required to completely combust the injected gas by chemical reaction) is in the range of 1.0 to 1.2, The flow rate of the combustible mixed gas ejected from the surface of the burner body was set in the range of 5 to 30 cm / sec. These set values are obtained from the experimental results shown in FIG. 3. Under such operating conditions, the burner body 2 burns in a red-hot state with a flame adhered to its surface.
第４図は本実施例の赤外線ヒータ使用時の、バーン本
体表面からの距離とその点での温度との関係を、投入熱
量をパラメータとして示したもので、投入熱量が面負荷
で20Kcal/cm2・ｈ、40Kcal/cm2・ｈ、57Kcal/cm2・ｈの
場合を例に挙げて示してある。同図から明らかなよう
に、バーナ本体表面から200mm離れた場所でも面負荷57K
cal/cm2・ｈの場合、300℃以上の温度が得られた。な
お、ここでは投入熱量を３つ例に挙げて説明したが、本
実施例に係る赤外線ヒータは、投入熱量を面負荷で10〜
80Kcal/cm2・ｈの範囲で設定可能であることが確認され
た。FIG. 4 shows the relationship between the distance from the surface of the burn main body and the temperature at that point when the infrared heater of this embodiment is used, with the input heat quantity as a parameter. The input heat quantity is 20 Kcal / cm at a surface load. The case of 2 · h, 40 Kcal / cm 2 · h, and 57 Kcal / cm 2 · h is shown as an example. As is evident from the figure, even at a place 200 mm away from the burner body surface,
In the case of cal / cm 2 · h, a temperature of 300 ° C. or more was obtained. In addition, here, three input heat amounts are described as an example, but the infrared heater according to the present embodiment has the input heat amount of 10 to
It was confirmed that it could be set within the range of 80 Kcal / cm 2 · h.
このように、本実施例の赤外線ヒータは、投入熱量を
大きくできるので、放射熱量を容易に増大させることが
可能となり、放射効率が向上する。また、バーナ本体を
構成する焼結板が長さ10mm以上の金属の長繊維から形成
されているので、機械的強度が高く、均一な赤熱板を支
えなしで大きな面積作ることができる。更に、バーナ本
体２の表面に火炎が付着して燃焼するので、風等による
失火がないという利点がある。更にまた、高負荷燃焼が
でき、熱効率も高いので、同じ出力なら、従来に比し小
形軽量でランニングコストの低い赤外線ヒータが得られ
る。As described above, the infrared heater of the present embodiment can increase the amount of heat input, so that the amount of radiant heat can be easily increased, and the radiation efficiency is improved. Further, since the sintered plate constituting the burner main body is formed from long fibers of metal having a length of 10 mm or more, the mechanical strength is high and a large area can be formed without supporting a uniform glowing plate. Further, since the flame adheres to the surface of the burner body 2 and burns, there is an advantage that there is no misfire due to wind or the like. Furthermore, since high-load combustion can be performed and thermal efficiency is high, an infrared heater that is smaller and lighter and has lower running costs than conventional ones can be obtained with the same output.
なお、上述した実施例ではバーナ本体を平板状に形成
したものを示したが、このバーナ本体は金属からなる長
繊維を使用した長繊維焼結板から成り折曲可能であるの
で、その形状・姿勢を、第５図（ａ），（ｂ），（ｃ）
に示す如く、ラジアントチューブ形（第５図（ａ））、
円筒状形（第５図（ｂ））、半球状形（第５図（ｃ））
等、色々な形態を採用することが可能となっており、こ
のような場合でも上述した実施例同様の作用効果を奏す
る。In the above-described embodiment, the burner main body is formed in a flat plate shape. However, since the burner main body is made of a long fiber sintered plate using a long fiber made of metal and can be bent, its shape and The posture is shown in FIGS. 5 (a), (b) and (c).
As shown in the figure, a radiant tube type (Fig. 5 (a)),
Cylindrical shape (Fig. 5 (b)), hemispherical shape (Fig. 5 (c))
It is possible to adopt various forms such as the above, and even in such a case, the same operation and effect as the above-described embodiment can be obtained.
［発明の効果］ 以上述べたように、本発明によれば、バーナエレメン
トを直径10〜50μm,長さ10mm以上の金属からなる長繊維
を使用し、空隙率を80〜95％に設定した長繊維焼結板か
ら形成して、ガス供給装置より投入された混合気体を整
流して全面から均一に噴出するよう構成するとともに、
バーナエレメントの全面から噴出するガス流速を５〜30
cm/secの範囲に設定したので、バーナの背圧が減って面
負荷を上げるのが容易となり、放射効率、熱効率が向上
し、繊維が溶けることなく、バーナエレメントの表面に
火炎を付着させた状態で燃焼させることができる上、大
きな面の均一加熱が可能となり、ランニングコストを低
く抑えることができる。更に繊維焼結により形成される
バーナエレンメントは、厚み方向の熱伝導が悪く、厚く
しても表面温度の低下につながらないため、厚くするこ
とが可能となり、強度の確保が容易となるという効果が
ある。[Effects of the Invention] As described above, according to the present invention, a burner element having a diameter of 10 to 50 µm and a length of 10 mm or more made of a metal having a porosity of 80 to 95% is used. Formed from a fiber sintered plate, the gas mixture supplied from the gas supply device is rectified and uniformly jetted from the whole surface,
The gas flow velocity squirting from the entire surface of the burner element is 5-30.
Since it was set to the range of cm / sec, the back pressure of the burner was reduced, it was easy to increase the surface load, the radiation efficiency and the heat efficiency were improved, and the flame was attached to the surface of the burner element without melting the fiber. In addition to burning in a state, uniform heating of a large surface becomes possible, and running costs can be reduced. Furthermore, the burner element formed by fiber sintering has poor heat conduction in the thickness direction and does not lead to a decrease in the surface temperature even if it is made thicker. is there.
第１図は本発明に係る赤外線ヒータの一実施例の全体構
成を示す正面図、第２図はその側面図、第３図は空気過
剰率と混合気体流速との関係を示す赤熱領域の説明図、
第４図はバーナ本体表面からの距離とその点での温度と
の関係を示す説明図、第５図（ａ），（ｂ），（ｃ）は
それぞれ本発明の他の実施例を示す構成図である。 図において、１はガス供給装置、２はバーナ本体（バー
ナエレメント）、３は点火プラグ（点火手段）である。FIG. 1 is a front view showing an entire configuration of an embodiment of an infrared heater according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is an explanation of a red heat region showing a relationship between excess air ratio and mixed gas flow velocity. Figure,
FIG. 4 is an explanatory view showing the relationship between the distance from the surface of the burner main body and the temperature at that point, and FIGS. 5 (a), (b) and (c) each show another embodiment of the present invention. FIG. In the figure, 1 is a gas supply device, 2 is a burner main body (burner element), and 3 is a spark plug (ignition means).
Claims (1)
ス供給装置と、直径10〜50μm,長さ10mm以上の金属から
なる長繊維を使用し、空隙率を80〜95％に設定した長繊
維焼結板から成るバーナエレメントと、このバーナエレ
メントの前面側に配置され該バーナエレメントにより整
流されてその全面から均一に噴出するガスに着火させる
点火手段とを備え、前記噴出するガス流速を５〜30cm/s
ecの範囲に設定されてなることを特徴とする赤外線ヒー
タ。1. A gas supply device for supplying a mixed gas of a gaseous fuel and air, a long fiber made of a metal having a diameter of 10 to 50 μm and a length of 10 mm or more, and a porosity of 80 to 95%. A burner element made of a long fiber sintered plate; and ignition means arranged on the front side of the burner element and igniting gas rectified by the burner element and uniformly jetted from the entire surface thereof. 5-30cm / s
An infrared heater characterized by being set in the range of ec.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1159612A JP2855664B2 (en) | 1989-06-23 | 1989-06-23 | Infrared heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1159612A JP2855664B2 (en) | 1989-06-23 | 1989-06-23 | Infrared heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0325205A JPH0325205A (en) | 1991-02-04 |
| JP2855664B2 true JP2855664B2 (en) | 1999-02-10 |
Family
ID=15697518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1159612A Expired - Lifetime JP2855664B2 (en) | 1989-06-23 | 1989-06-23 | Infrared heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2855664B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6007329A (en) * | 1998-11-16 | 1999-12-28 | Infratech, L.L.C. | Emitter apparatus |
| US6470876B1 (en) * | 1999-08-10 | 2002-10-29 | The Coleman Company, Inc. | Catalytic heater assembly |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51131736U (en) * | 1975-04-16 | 1976-10-23 | ||
| JPS5430195Y2 (en) * | 1975-08-26 | 1979-09-22 |
-
1989
- 1989-06-23 JP JP1159612A patent/JP2855664B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0325205A (en) | 1991-02-04 |
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