JP3467070B2 - Burner ignition device - Google Patents
Burner ignition deviceInfo
- Publication number
- JP3467070B2 JP3467070B2 JP06555694A JP6555694A JP3467070B2 JP 3467070 B2 JP3467070 B2 JP 3467070B2 JP 06555694 A JP06555694 A JP 06555694A JP 6555694 A JP6555694 A JP 6555694A JP 3467070 B2 JP3467070 B2 JP 3467070B2
- Authority
- JP
- Japan
- Prior art keywords
- burner
- silicon nitride
- heater
- ignition device
- carrier
- 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
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明はバーナの着火装置に関す
るものである。
【０００２】
【従来の技術】従来、液体、気体等を燃料とするバーナ
の着火装置としては、２０００〜１００００Ｖの高電圧
火花放電を利用するもの、高電圧の電気をコンデンサに
充電し、これを半導体プラグにて間歇的に放電させる放
電エネルギを利用するもの、炭化珪素を焼結した燒結体
よりなる炭化珪素発熱体に１０〜３０Ｖの電圧を印加し
て高熱を発生させるもの等、各種提案されている。
【０００３】しかしながら、これらの装置は、２０００
〜１００００Ｖの高電圧を利用する場合は、高圧部に高
度な絶縁対策が必要となるほか、その取り扱いに危険が
伴い、また、１０〜３０Ｖの低電圧を利用する炭化珪素
発熱体を用いる場合は、炭化珪素発熱体が所定の着火温
度に達するまでの時間（立ち上がり時間）が１０秒以上
必要なため、着火に時間を要する等、各々問題点を有し
ていた。
【０００４】また、発熱体に印加する初期の電圧を定格
電圧の１．５〜２倍とすることによって立ち上がり時間
を数秒程度に短縮化する装置も提案されているが、この
場合は、トランス、電流継電器等の付属の設備が必要と
なり、装置が複雑化するほか、急速昇温により発熱体に
熱衝撃を与え、発熱体にクラックが発生し、発熱体の寿
命が短くなるという問題点を有していた。
【０００５】
【発明が解決しようとする課題】本発明は、上記従来の
バーナの着火装置の問題点に鑑み、取り扱いに危険性の
少ない電圧を使用して短時間でバーナの着火を確実に行
うことができ、着火部品の消耗が少なく、かつ、付属の
設備が不要なバーナの着火装置を提供することを目的と
する。
【０００６】
【課題を解決するための手段】上記目的を達成するた
め、本発明のバーナの着火装置は、先端近傍に切欠部を
有する筒状のキャリヤをバーナ内に進退自在に配設する
とともに、前記キャリヤの内部に、前記切欠部に臨むよ
うに３個又は４個の窒化珪素ヒータを、隣接するヒータ
間に隙間を設けて点対称位置に等間隔に配設してなるこ
とを特徴とする。
【０００７】
【作用】上記のように構成されたバーナの着火装置によ
れば、ヒータとして窒化珪素ヒータを使用しているた
め、取り扱いに危険性の少ない１００〜２００Ｖ程度の
電圧であっても、単に電圧をヒータに印加することによ
り、数秒という短時間でヒータの温度をバーナの着火に
必要な温度にまで加熱することができる。また、バーナ
の燃焼中等、着火装置の必要のない場合には、キャリヤ
をバーナ内から後退させることによって、窒化珪素ヒー
タがバーナの火炎により焼損することを防止する。
【０００８】
【実施例】以下本発明を図示の実施例に基づいて説明す
る。このバーナの着火装置は、バーナ（図示省略）内に
進退自在に配設して使用されるものであり、先端近傍に
切欠部４を有する筒状のキャリヤ１と、キャリヤ１の先
端に螺合したキャップ２と、キャリヤ１の内部にキャリ
ヤ１の切欠部４に臨むように支持具５によって固定した
窒化珪素ヒータ３と、支持具５をキャリヤ１に固定する
保持具６と、キャリヤ１の後端に設けたターミナルケー
シング７と、ターミナルケーシング７の内部に配設した
窒化珪素ヒータ３の給電導体８の端部を接続する端子９
と、端子９に接続され、窒化珪素ヒータ３に１００〜２
００Ｖ程度の電圧を直接印加する電源部（図示省略）と
から構成する。
【０００９】本発明において使用する窒化珪素ヒータ３
は、図２に示すように、内部に発熱体３ａを埋設した窒
化珪素質焼結体の後端部に発熱体３ａに通電するための
リード線３ｂを備えたものである。この窒化珪素ヒータ
３は、長さ（Ｌ）５４ｍｍ×巾（Ｗ）４．７ｍｍ×厚さ
（Ｔ）１．３ｍｍ、発熱部長さ（Ｌ０）１４ｍｍ、発熱
部面積１．６８平方ｃｍの平板状の形状をしており、こ
れにＡＣ１００Ｖの商用電源を印加すると、摂氏１００
０度に達するまでの時間は、４．３秒ときわめて短時間
に立ち上がり、飽和温度も摂氏１２４０度まで加熱する
ことができた。
【００１０】窒化珪素ヒータ３の個数は、１個又は複数
個の任意の個数とすることができるが、短時間で確実に
バーナに着火させるためには、窒化珪素ヒータ３を複数
個配設することが望ましい。
【００１１】すなわち、バーナの着火に必要な要素は、
ヒータの発熱温度と燃料との接触面積である。これら要
素の具体的な数値は、バーナの種類や燃料の種類等によ
り異なるが、産業用重油バーナを使って実験した結果、
バーナの着火に必要なヒータの発熱温度は摂氏１０００
〜１２００度、燃料との接触面積は１〜５平方ｃｍ程度
であることが明らかとなった。この接触面積を得るため
の方法としては、窒化珪素ヒータ３の形状を大きくする
方法がまず考えられるが、形状を大きくした場合、所定
の着火温度に達するまでの時間（立ち上がり時間）が大
きさに比例して長くなり、短時間で着火させるという目
的を達成できなくなるおそれがある。
【００１２】このため、大きな接触面積を必要とする場
合には、窒化珪素ヒータ３を複数個配設するようにす
る。具体的には、図３に示すように、窒化珪素ヒータ３
がそれぞれ中心から外周に向けて並ぶように、窒化珪素
ヒータ３を支持具５に取り付け、各窒化珪素ヒータ３を
電気的に並列に接続することにより、大容量のバーナで
あっても短時間で確実に着火を行うことができる。そし
て、図２に示す窒化珪素ヒータ３を３個使用した図３
（ｂ）に示す着火装置を用いて、燃焼量１０００Ｋｇ／
Ｈｒの容量を持つＣ重油バーナに短時間で確実に着火を
行うことができることを確かめた。
【００１３】また、複数個の窒化珪素ヒータ３を図３
（ｂ）、（ｃ）に示すように取り付けることによって、
燃料が窒化珪素ヒータ３の表面に接触しやすくなり、ま
た、窒化珪素ヒータ３のリード線３ｂを給電導体８と接
続する際に支持具の中心部に位置するリード線群と、外
周部に位置するリード線群とを、それぞれ束ねて給電導
体８と接続すればよいことから、結線作業を容易に行う
ことができるという利点がある。
【００１４】支持具５及び保持具６は、耐熱性を有する
絶縁材料で形成するか、又は窒化珪素ヒータ３及び給電
導体８との接触箇所に適宜の絶縁材を配設するように構
成する。
【００１５】また、着火装置の長時間の使用等により、
支持具５によって固定された窒化珪素ヒータ３が焼損し
た場合には、保持具６を解放することにより新たな窒化
珪素ヒータ３と交換可能なように構成する。また、キャ
ップ２を着脱可能に設けることによって、キャリヤ１の
内部の清掃を容易に行うことができるように構成する。
【００１６】筒状のキャリヤ１をバーナ内に進退させる
手段としては、手動のほか、他の駆動機構を設けること
もでき、さらに、バーナの燃焼状態と駆動機構とを連動
するように構成することもできる。
【００１７】上記のように構成されたバーナの着火装置
を用いてバーナの着火を行う場合には、着火装置のキャ
リヤ１の先端をバーナ内の所定位置まで挿入した後、電
源部を操作することによって、窒化珪素ヒータ３に１０
０〜２００Ｖ程度の電圧を直接印加する。
【００１８】これにより、数秒という短時間でヒータの
温度をバーナの着火に必要な摂氏１０００度以上の温度
にまで加熱することができ、キャリヤ１の切欠部４から
回り込んだ燃料が引火してバーナの着火が行われる。
【００１９】また、バーナの燃焼中等、着火装置の必要
のない場合には、キャリヤ１をバーナ内から後退させる
ことによって、窒化珪素ヒータ３がバーナの火炎により
焼損することを防止する。
【００２０】
【発明の効果】本発明によれば、取り扱いに危険性の少
ない電圧を使用して短時間でバーナの着火を確実に行う
ことができ、着火装置の操作をきわめて簡易に、かつ安
全に行うことができる。また、着火部品の消耗が少な
く、かつ、付属の設備を簡素化することができるため、
装置全体をコンパクトにすることができるとともに、装
置のコストを低廉にすることができる。そして、特に、
３個又は４個の窒化珪素ヒータを、隣接するヒータ間に
隙間を設けて点対称位置に等間隔に配設するようにして
いるので、燃料が窒化珪素ヒータの表面に接触しやすく
なり、大容量のバーナであっても短時間で確実に着火を
行うことができる。 Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burner ignition device. 2. Description of the Related Art Conventionally, as an ignition device for a burner using fuel such as liquid or gas, a device using a high-voltage spark discharge of 2000 to 10000 V, a high-voltage electricity is charged to a capacitor, and this is used Various proposals have been made, such as one that uses discharge energy intermittently discharged by a semiconductor plug, one that generates high heat by applying a voltage of 10 to 30 V to a silicon carbide heating element made of a sintered body obtained by sintering silicon carbide. ing. [0003] However, these devices are not
In the case of using a high voltage of 〜１０10,000 V, in addition to the need for advanced insulation measures in the high voltage portion, there is a danger in its handling, and in the case of using a silicon carbide heating element using a low voltage of 10 to 30 V, In addition, the time required for the silicon carbide heating element to reach a predetermined ignition temperature (rise time) is 10 seconds or more, so that it takes time to ignite. [0004] Further, a device has been proposed in which the rise time is reduced to about several seconds by setting the initial voltage applied to the heating element to 1.5 to 2 times the rated voltage. Attached equipment such as a current relay is required, which complicates the equipment and has the problem of causing a thermal shock to the heating element due to rapid temperature rise, causing cracks in the heating element and shortening the life of the heating element. Was. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the conventional burner ignition device, and uses a voltage with low danger in handling to reliably ignite the burner in a short time. It is an object of the present invention to provide a burner ignition device which can reduce the consumption of ignition parts and does not require any attached equipment. In order to achieve the above object, a burner ignition device according to the present invention includes a cylindrical carrier having a notch near a tip end thereof, which is disposed in the burner so as to be able to advance and retreat. Three or four silicon nitride heaters inside the carrier so as to face the notches ,
It is necessary to provide gaps between them and arrange them at
And features. According to the burner ignition apparatus constructed as described above, since a silicon nitride heater is used as a heater, even if the voltage is about 100 to 200 V, which is less dangerous for handling, By simply applying a voltage to the heater, the temperature of the heater can be heated to a temperature required for ignition of the burner in a short time of several seconds. When the ignition device is not necessary, such as during burning of the burner, the carrier is retracted from the inside of the burner to prevent the silicon nitride heater from being burned out by the flame of the burner. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. This ignition device for a burner is used by being disposed in a burner (not shown) so as to be able to advance and retreat, and a cylindrical carrier 1 having a notch 4 in the vicinity of the tip, and being screwed to the tip of the carrier 1. A cap 2, a silicon nitride heater 3 fixed inside the carrier 1 by a support 5 so as to face the cutout 4 of the carrier 1, a holder 6 fixing the support 5 to the carrier 1, and a rear part of the carrier 1. Terminal 9 for connecting the terminal casing 7 provided at the end and the end of the power supply conductor 8 of the silicon nitride heater 3 disposed inside the terminal casing 7
Connected to the terminal 9 and connected to the silicon nitride heater 3 by 100 to 2
And a power supply section (not shown) for directly applying a voltage of about 00V. The silicon nitride heater 3 used in the present invention
As shown in FIG. 2, a lead wire 3b for supplying electricity to the heating element 3a is provided at the rear end of the silicon nitride sintered body having the heating element 3a embedded therein. The silicon nitride heater 3 has a plate shape having a length (L) of 54 mm, a width (W) of 4.7 mm, a thickness (T) of 1.3 mm, a heating section length (L0) of 14 mm, and a heating section area of 1.68 square cm. When a commercial power supply of AC100V is applied thereto, the temperature becomes 100 degrees Celsius.
The time required to reach 0 degrees was extremely short, 4.3 seconds, and the saturation temperature was able to be increased to 1240 degrees Celsius. The number of the silicon nitride heaters 3 can be one or an arbitrary number. In order to reliably ignite the burner in a short time, a plurality of the silicon nitride heaters 3 are provided. It is desirable. [0011] That is, the elements necessary for ignition of the burner are:
This is the contact area between the heat generated by the heater and the fuel. The specific numerical values of these factors vary depending on the type of burner, type of fuel, etc., but as a result of experiments using industrial heavy oil burners,
Heating temperature of heater required for ignition of burner is 1000 degrees Celsius
It was found that the contact area with the fuel was about 1 to 5 square cm. As a method for obtaining this contact area, a method of enlarging the shape of the silicon nitride heater 3 can be considered first. However, when the shape is enlarged, the time (rise time) required to reach a predetermined ignition temperature becomes large. There is a possibility that it becomes longer in proportion and the purpose of igniting in a short time cannot be achieved. Therefore, when a large contact area is required, a plurality of silicon nitride heaters 3 are provided. Specifically, as shown in FIG.
The silicon nitride heaters 3 are mounted on the support 5 so that the silicon nitride heaters 3 are arranged in parallel from the center toward the outer periphery, and the silicon nitride heaters 3 are electrically connected in parallel, so that even a large-capacity burner can be manufactured in a short time. Ignition can be performed reliably. 3 using three silicon nitride heaters 3 shown in FIG.
Using the ignition device shown in (b), the combustion amount was 1000 kg /
It has been confirmed that it is possible to reliably ignite the C fuel oil burner having the capacity of Hr in a short time. A plurality of silicon nitride heaters 3 are shown in FIG.
By mounting as shown in (b) and (c) ,
The fuel easily comes into contact with the surface of the silicon nitride heater 3. Also, when connecting the lead wire 3 b of the silicon nitride heater 3 to the power supply conductor 8, the lead wire group located at the center of the support and the outer peripheral portion It is only necessary to bundle the lead wire groups to be connected and connected to the power supply conductor 8, so that there is an advantage that the connection operation can be easily performed. The supporting member 5 and the holding member 6 are formed of an insulating material having heat resistance, or an appropriate insulating material is provided at a contact portion with the silicon nitride heater 3 and the power supply conductor 8. [0015] In addition, by using the ignition device for a long time,
When the silicon nitride heater 3 fixed by the support 5 is burned, the holder 6 is released to allow replacement with a new silicon nitride heater 3. Further, by providing the cap 2 in a detachable manner, the inside of the carrier 1 can be easily cleaned. As means for moving the cylindrical carrier 1 into and out of the burner, other drive mechanisms can be provided in addition to manual operation, and further, the combustion state of the burner and the drive mechanism are linked. Can also. When the burner is ignited using the burner igniter configured as described above, the power supply unit must be operated after the tip of the carrier 1 of the igniter is inserted to a predetermined position in the burner. As a result, 10
A voltage of about 0 to 200 V is directly applied. As a result, the temperature of the heater can be heated to a temperature of 1000 ° C. or more required for igniting the burner in a short time of several seconds, and the fuel spilled from the notch 4 of the carrier 1 ignites. The burner is ignited. When an ignition device is not required, for example, during combustion of the burner, the carrier 1 is retracted from the inside of the burner to prevent the silicon nitride heater 3 from being burned out by the flame of the burner. According to the present invention, the burner can be reliably ignited in a short time by using a voltage with low danger in handling, and the operation of the igniter can be performed extremely easily and safely. Can be done. In addition, because the consumption of ignition parts is small and the attached equipment can be simplified,
The entire device can be made compact and the cost of the device can be reduced. And, in particular,
Three or four silicon nitride heaters between adjacent heaters
Provide a gap and arrange them at equal intervals at point symmetrical positions
The fuel easily contacts the surface of the silicon nitride heater
Ignite in a short time even with a large capacity burner.
It can be carried out.
【図面の簡単な説明】
【図１】本発明のバーナの着火装置を示す図である。
【図２】本発明のバーナの着火装置に用いる窒化珪素ヒ
ータを示す図である。
【図３】窒化珪素ヒータを複数個使用する場合の代表的
な配列の例を示す図で、（ａ）は参考例、（ｂ）、
（ｃ）は実施例である。
【符号の説明】
１ キャリヤ
２ キャップ
３ 窒化珪素ヒータ
４ 切欠部
５ 支持具
６ 保持具
７ ターミナルケーシング
８ 給電導体
９ 端子BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a burner ignition device of the present invention. FIG. 2 is a diagram showing a silicon nitride heater used in the burner ignition device of the present invention. 3A and 3B are diagrams showing examples of typical arrangements when a plurality of silicon nitride heaters are used, where FIG. 3A is a reference example, and FIG.
(C) is an example . [Description of Signs] 1 Carrier 2 Cap 3 Silicon nitride heater 4 Notch 5 Support 6 Holder 7 Terminal casing 8 Power supply conductor 9 Terminal
フロントページの続き (56)参考文献 特開 平２−251012（ＪＰ，Ａ) 特開 平２−251014（ＪＰ，Ａ) 特開 平２−298727（ＪＰ，Ａ) 特開 平２−33523（ＪＰ，Ａ) 実開 平３−25865（ＪＰ，Ｕ) 実開 平３−14568（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F23Q 7/00 - 7/26 Continuation of the front page (56) References JP-A-2-251012 (JP, A) JP-A-2-251014 (JP, A) JP-A-2-298727 (JP, A) JP-A-2-33523 (JP) , A) Japanese Utility Model 3-25865 (JP, U) Japanese Utility Model 3-14568 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) F23Q 7/ 00-7/26
Claims (1)
ヤをバーナ内に進退自在に配設するとともに、前記キャ
リヤの内部に、前記切欠部に臨むように３個又は４個の
窒化珪素ヒータを、隣接するヒータ間に隙間を設けて点
対称位置に等間隔に配設してなることを特徴とするバー
ナの着火装置。(57) [Claim 1] A cylindrical carrier having a notch in the vicinity of a tip is disposed in a burner so as to be able to advance and retreat, and inside the carrier so as to face the notch. Three or four silicon nitride heaters are provided with gaps between adjacent heaters.
An ignition device for a burner, which is arranged at equal intervals at symmetrical positions .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06555694A JP3467070B2 (en) | 1994-03-08 | 1994-03-08 | Burner ignition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06555694A JP3467070B2 (en) | 1994-03-08 | 1994-03-08 | Burner ignition device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07243646A JPH07243646A (en) | 1995-09-19 |
| JP3467070B2 true JP3467070B2 (en) | 2003-11-17 |
Family
ID=13290400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06555694A Expired - Lifetime JP3467070B2 (en) | 1994-03-08 | 1994-03-08 | Burner ignition device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3467070B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102018214281B3 (en) | 2018-08-23 | 2019-08-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Device for igniting a fuel-oxidizer mixture |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200142519A (en) | 2018-03-27 | 2020-12-22 | 에스씨피 홀딩스 언 어숨드 비지니스 네임 오브 나이트라이드 이그나이터스 엘엘씨 | High temperature surface igniter for cooktop |
-
1994
- 1994-03-08 JP JP06555694A patent/JP3467070B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018214281B3 (en) | 2018-08-23 | 2019-08-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Device for igniting a fuel-oxidizer mixture |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07243646A (en) | 1995-09-19 |
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