【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は主として焼物調理器の上
火用バーナとして用いる赤外線バーナに関する。
【０００２】
【従来の技術】一般に赤外線バーナ用の燃焼プレ−ト
は、その全面に均一に炎口を設けている。しかしこれを
例えば比較的少ない熱量しか必要とせず、しかも燃焼面
の広がりの大きなものが要求される焼物調理器の上火バ
ーナに設ける燃焼プレ−トに通常の数の炎口を通常のピ
ッチ間隔で設けると熱量が過多となりすぎ、良好な焼成
調理を行い得ないの不具合がある。そこで供給ガス量を
絞ることが考えられるが、かくするときは各炎口負荷が
減少し、燃焼プレ−トの温度が充分に上りきらず燃焼が
不安定になり、特に点火初期に炎がリフトし易くなるの
不具合がある。
【０００３】
【発明が解決しようとする課題】そこで炎口の数を減ら
すことが考えられるが、炎口のピッチを大きくして炎口
の数を減らすと燃焼プレ−トの炎口を設けた部分の温度
が上らず前述と同様に燃焼が不安定となるの不具合があ
る。そこで炎口を燃焼プレ−トに集中させることでこれ
を解消することも考えられるが、かくするときは熱分布
に片寄りを生じて調理物を均一に加熱出来なくなるの不
具合がある。即ち比較的少ない熱量しか必要とせず、し
かも燃焼面の広がりの大きいものが要求されるバーナに
あっては、燃焼性の向上を求めると熱分布が悪くなるの
不具合がある。しかも、焼物調理器の上火用バーナとし
て用いるとき、熱は燃焼プレートの中央に集中し易い傾
向がある。本発明はかゝる不具合のない赤外線バーナを
得ることをその目的とする。
【０００４】
【課題を解決するための手段】本発明はかゝる目的を達
成するため、燃焼プレートに、帯状に炎口を設けた外周
炎口分布部と、該外周炎口分布部の内側に、外周炎口分
布部と一部で連なる帯状に炎口を設けた内側炎口分布部
とを設けたことを特徴とする。
【０００５】
【作用】上記構成を備える赤外線バーナにあっては、燃
焼プレートに、帯状の外周炎口分布部と、該外周炎口分
布部の内側に、外周炎口分布部と一部で連なる帯状の内
側炎口分布部とを設けたため、燃焼面の広がりに比べて
比較的少ない熱量しか放射しない赤外線バーナが得られ
る。しかも、これを焼物調理器に使用するとき、調理物
は、燃焼プレートの帯状の外周炎口分布部と内側炎口分
布部からの熱によってほぼ均一に焼かれる。
【０００６】
【実施例】本発明実施の１例を別紙図面につき説明す
る。図面で１はガスバーナ本体を示し、該ガスバーナ本
体１に方形で、多数の炎口を備えた燃焼プレ−ト２を取
付けて赤外線バーナを構成する。該燃焼プレート２は、
例えば、後方排気型の焼物調理器（図示しない）内の天
部に、燃焼プレ−ト２を下向きに設けて使用するもの
で、この場合図１に矢示するごとく燃焼プレ−ト２の一
端から他端に向って排気が流れる。本発明はかゝるもの
に於いて、燃焼プレート２に、多数の炎口３を設けた外
周炎口分布部Ａと，該外周炎口分布部Ａの内側に、多数
の炎口３を設けた外周炎口分布部Ａと一部で連なる内側
炎口分布部Ｂとを設けた。
【０００７】これを図１乃至図３に示す第１実施例に付
き更に説明すると、この実施例では、該燃焼プレ−ト２
を中央で分断される前後２枚のプレ−ト板２ａ，２ａで
形成し、該燃焼プレ−ト２に施した外周炎口分布部Ａ
は、燃焼プレ−ト２の前後端部の略全幅に亘る直線状の
帯状部分Ａ1 ，Ａ2 と、中間の２か所で内側に屈曲する
燃焼プレ−ト２の両側に設けたジグザグ状の帯状部分Ａ
3 ，Ａ4 とし、該帯状部分Ａ3 ，Ａ4 の内側に、帯状部
分Ａ3 ，Ａ4 の屈曲する箇所からそれぞれ向かい合うよ
うに略Ｖ字状の帯状部Ｂ１，Ｂ２を突出させて、これを
前記内側炎口分布部Ｂとした。
【０００８】尚、このように、後方排気型の焼物調理器
内の天部に、燃焼プレ−ト２を下向きに設けて使用する
とき、帯状部分Ａ2 はアフタバーナとして機能する。そ
して、この実施例では、帯状部分Ａ3 ，Ａ4 と帯状部分
Ｂ１，Ｂ２とに囲まれる燃焼プレ−ト２の中央部を炎口
を設けない無炎口部Ｃ1 とすると共に、その無炎口部Ｃ
1 の前後を、帯状部分Ａ1 ，Ａ2 と帯状部分Ａ3 ，Ａ4
と帯状部分Ｂ１，Ｂ２とに囲まれる部分を無炎口部Ｃ2
乃至Ｃ3 とし、更に蛇行する帯状部分Ａ3 ，Ａ4 の各外
側の２か所を無炎口部Ｃ4 とＣ5 とした。又第１実施例
に見られるごとく、ジグザグ状の帯状部分Ａ3 ，Ａ4 の
一つの直線部分の長さが長くなると、この部分が他の部
分に比べ脆弱になることを避けられない。そこで、これ
を防ぐために、図４に示す第２実施例では、その中間を
更に屈曲させた中間の４か所で内側に屈曲するジグザグ
状の帯状部分Ａ3 ，Ａ4 とした。そして該帯状部分Ａ3
，Ａ4 の内側に、互いに接近する側の各屈曲する箇所
に連なる両端部と帯状部分Ａ1 ，Ａ2 と平行する中間部
とを備える帯状部分Ｂ1 ，Ｂ2 を設けて、前記内側炎口
分布部Ｂとした。そして、この実施例でも、先の実施例
と同様に、帯状部分Ａ3 ，Ａ4 と帯状部分Ｂ１，Ｂ２と
に囲まれる燃焼プレ−ト２の中央部を無炎口部Ｃ1 と
し、その無炎口部Ｃ1 の前後の、帯状部分Ａ1 ，Ａ2 と
帯状部分Ａ3 ，Ａ4 と帯状部分Ｂ１，Ｂ２とに囲まれる
部分を、無炎口部Ｃ2 乃至Ｃ3 とし、更に蛇行する帯状
部分Ａ3 ，Ａ4 の各外側の２か所を無炎口部Ｃ4 とＣ5
とした。
【０００９】尚図示する実施例では、図３のごとく外周
炎口分布部Ａと，内側炎口分布部Ｂとその両側に沿った
部分とに該燃焼プレ−ト２の表面にダイヤカットその他
の切込みを施して、燃焼プレ−ト２の表面に多数の突部
４を形成した。かくするときは、各炎口３からの炎によ
り該突部４が赤熱して炎口３を設けた部分の温度をより
高めることが出来、炎口３の両側部分でも排ガスにより
該突部４が赤熱しこれにより赤熱する部分の巾が広がる
と共に外周炎口分布部Ａと内側炎口分布部Ｂ並びにその
両側部分の温度を高めることが出来、これにより燃焼を
安定させるようにした。更に該外周炎口分布部Ａと内側
炎口分布部Ｂの両側に位置する部分に炎口３と同ピッチ
の未貫通孔５を設ければ、該外周炎口分布部Ａと内側炎
口分布部Ｂの両側部分の燃焼プレ−ト２の熱容量を小さ
くすることが出来、これによって各炎口３を施した部分
の温度上昇速度をより高めて、特に点火初期のリフトの
発生等をより押え得る。
【００１０】尚燃焼プレ−ト２は炎口３のない部分とあ
る部分とでは、比熱に大きな差があって熱歪による燃焼
プレ−ト２の割れの一つの原因となる。これを可及的に
防ぐため炎口３のない部分にも前記するダイヤカット等
の切込みを施し又は炎口ピッチの数倍のピッチ間隔で未
貫通孔６を施せば、炎口のない部分とある部分との比熱
の差を小さく出来て前述する不具合を解消出来る。尚実
施例のように、帯状の外周炎口分布部Ａと、該外周炎口
分布部Ａの内側に、外周炎口分布部Ａと一部で連なる帯
状の内側炎口分布部Ｂとを設けた燃焼プレート２を備え
る赤外線バーナでは、その全てに於いて焼性能（均一に
調理物を加熱出来ること）は良好であり、しかも燃焼性
（CO/CO2）も良好であった。
【００１１】燃焼性を図２に示す第１実施例に付き、燃
焼能力1050Kcal/hのバーナで実験した結果を示すと、ガ
ス種 ６Ｃでは、 CO/CO2 の値は、0.0045/1.2＝0.00
38であり、ガス種 １３Ａでは、CO/CO2 の値は、0.00
6/1.32＝0.0045であった。
【００１２】
【発明の効果】このように本発明によるときは、帯状の
外周炎口分布部と、該外周炎口分布部の内側に、外周炎
口分布部と一部で連なる帯状の内側炎口分布部とを設け
たため、燃焼面の広がりに比べて比較的少ない熱量しか
放射せず、しかもこれを焼物調理器に使用するとき、調
理物が、燃焼プレートの帯状の外周炎口分布部と内側炎
口分布部からの熱によってほぼ均一に焼かれるため、焼
物調理を行うバーナとして好ましい赤外線バーナが得ら
れる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to an infrared burner used as a burner for burning a porcelain cooker. 2. Description of the Related Art In general, a combustion plate for an infrared burner has a uniform flame opening on the entire surface. However, this requires, for example, a normal number of flame openings in a combustion plate provided on the upper burner of a pottery cooker that requires a relatively small amount of heat and has a large combustion surface. If it is provided, the amount of heat becomes too large, and there is a problem that good baking cannot be performed. Therefore, it is conceivable to reduce the supply gas amount, but when doing so, the load on each flame is reduced, the temperature of the combustion plate does not rise sufficiently and the combustion becomes unstable, and the flame lifts especially at the initial stage of ignition. There is a problem that it becomes easier. Therefore, it is conceivable to reduce the number of flame ports, but if the pitch of the flame ports is increased to reduce the number of flame ports, the flame ports of the combustion plate are provided. There is a problem that the temperature of the part does not rise and the combustion becomes unstable as described above. Therefore, it is conceivable to eliminate this by concentrating the flame openings on the combustion plate, but in this case, there is a problem in that the heat distribution is deviated and the cooked food cannot be heated uniformly. That is, in the case of a burner that requires a relatively small amount of heat and that has a large combustion surface, there is a problem that the heat distribution becomes worse when the improvement of combustibility is required. Moreover, when it is used as a burner for a fire of a ware cooker, heat tends to be concentrated in the center of the combustion plate. An object of the present invention is to obtain an infrared burner free of such a problem. In order to achieve such an object, the present invention has an outer peripheral flame outlet distribution portion having strip-shaped flame outlets in a combustion plate, and an inner side of the outer peripheral flame outlet distribution portion. In addition, an inner flame outlet distribution portion having a strip-shaped flame outlet partially connected to the outer flame outlet distribution portion is provided. In the infrared burner having the above-described structure, the combustion plate has a belt-shaped outer peripheral flame port distribution portion, and the outer peripheral flame port distribution portion is partially connected to the inner side of the outer peripheral flame port distribution portion. Since the belt-shaped inner flame mouth distribution portion is provided, an infrared burner that radiates a relatively small amount of heat as compared with the spread of the combustion surface can be obtained. Moreover, when this is used in a ware cooker, the food is almost uniformly baked by the heat from the strip-shaped outer flame tip distribution portion and the inner flame tip distribution portion of the combustion plate. An embodiment of the present invention will be described with reference to the attached drawings. In the drawing, reference numeral 1 denotes a gas burner main body, and a square-shaped combustion plate 2 having a large number of flame openings is attached to the gas burner main body 1 to form an infrared burner. The combustion plate 2 is
For example, a combustion plate 2 is provided downward in the top part of a rear-exhaust-type pottery cooker (not shown). In this case, one end of the combustion plate 2 as shown by the arrow in FIG. The exhaust gas flows from the other end to the other end. In the present invention, the combustion plate 2 is provided with an outer peripheral flame port distribution portion A provided with a large number of flame ports 3 and a large number of flame ports 3 inside the outer peripheral flame port distribution portion A. Further, an outer peripheral flame outlet distribution portion A and an inner flame outlet distribution portion B partially connected to each other are provided. This will be further described with reference to the first embodiment shown in FIGS. 1 to 3. In this embodiment, the combustion plate 2 is used.
Is formed by two plate plates 2a, 2a before and after being divided at the center, and the outer peripheral flame port distribution portion A formed on the combustion plate 2 is formed.
Is a linear strip portion A1 or A2 extending over substantially the entire width of the front and rear end portions of the combustion plate 2 and zigzag strips provided on both sides of the combustion plate 2 that bends inward at two intermediate positions. Part A
3, A4, and substantially V-shaped belt-shaped portions B1 and B2 are projected inside the belt-shaped portions A3 and A4 so as to face the bent portions of the belt-shaped portions A3 and A4, respectively. It is referred to as distribution part B. [0008] As described above, when the combustion plate 2 is provided facing downward in the top portion of the rear exhaust type porcelain cooker, the strip portion A2 functions as an afterburner. In this embodiment, the center of the combustion plate 2 surrounded by the strips A3 and A4 and the strips B1 and B2 is a flameless port C1 having no flame port, and the flameless port C1. C
Before and after 1, the band-shaped portions A1 and A2 and the band-shaped portions A3 and A4
And the portion surrounded by the band-shaped portions B1 and B2 is a flameless port C2.
To C3, and the two outer portions of the meandering strips A3 and A4 were designated as flameless ports C4 and C5. Further, as seen in the first embodiment, when the length of one straight line portion of the zigzag strip portions A3 and A4 becomes long, it is inevitable that this portion becomes weaker than the other portions. Therefore, in order to prevent this, in the second embodiment shown in FIG. 4, zigzag belt-shaped portions A3 and A4 are further bent in the middle, and are bent inward at four intermediate positions. And the strip-shaped portion A3
, A4, there are provided strip-shaped portions B1, B2 each having both ends connected to each bent portion on the side approaching each other and an intermediate portion parallel to the strip-shaped portions A1, A2. did. In this embodiment, as in the previous embodiment, the central portion of the combustion plate 2 surrounded by the strips A3 and A4 and the strips B1 and B2 is defined as a flameless port C1. The portions surrounded by the strips A1, A2, the strips A3, A4, and the strips B1, B2 before and after the section C1 are referred to as flameless ports C2 to C3, and further outside each of the meandering strips A3, A4. No flame outlets C4 and C5
And In the illustrated embodiment, as shown in FIG. 3, the outer peripheral flame port distribution portion A, the inner flame port distribution portion B, and the portions along both sides thereof are diamond-cut on the surface of the combustion plate 2 and others. A number of protrusions 4 were formed on the surface of the combustion plate 2 by making a cut. In this case, the protrusions 4 are red-heated by the flames from the respective flame ports 3 and the temperature of the portion where the flame ports 3 are provided can be further raised. And the width of the red-hot portion widens, and the temperatures of the outer peripheral flame mouth distribution area A, the inner flame mouth distribution area B, and both sides thereof can be increased, thereby stabilizing the combustion. Further, if the non-through holes 5 having the same pitch as the flame openings 3 are provided in the portions located on both sides of the outer peripheral flame opening distribution area A and the inner flame opening distribution area B, the outer peripheral flame opening distribution area A and the inner flame opening distribution area It is possible to reduce the heat capacity of the combustion plate 2 on both sides of the section B, thereby increasing the rate of temperature rise in the section where each flame port 3 is provided, and further suppressing the occurrence of lift in the initial stage of ignition. obtain. Incidentally, the combustion plate 2 has a large difference in specific heat between a portion having no flame port 3 and a certain portion, which is one cause of cracking of the combustion plate 2 due to thermal strain. In order to prevent this as much as possible, if notches such as the above-mentioned diamond cut are made in the portion without the flame openings 3 or the unpenetrated holes 6 are provided at a pitch interval which is several times the pitch of the flame openings, it becomes a portion without the flame openings. The difference in specific heat from a certain part can be reduced, and the above-mentioned problems can be solved. As in the embodiment, a belt-shaped outer peripheral flame mouth distribution portion A and a belt-shaped inner side flame mouth distribution portion B partially connected to the outer peripheral flame mouth distribution portion A are provided inside the outer peripheral flame mouth distribution portion A. In all of the infrared burners equipped with the combustion plate 2, the burning performance (the ability to uniformly heat the food) was good, and the combustibility (CO / CO2) was also good. The results of experiments conducted with a burner having a combustion capacity of 1050 Kcal / h according to the first embodiment shown in FIG. 2 for the combustibility are as follows. For the gas type 6C, the CO / CO2 value is 0.0045 / 1.2 = 0.0045.
38, and the CO / CO2 value is 0.00 for the gas type 13A.
It was 6 / 1.32 = 0.0045. As described above, according to the present invention, a belt-shaped outer peripheral flame mouth distribution portion and a belt-shaped inner flame partially connected to the outer peripheral flame mouth distribution portion inside the outer peripheral flame mouth distribution portion. Since the mouth distribution section is provided, only a relatively small amount of heat is radiated compared to the spread of the combustion surface, and when this is used in a pottery cooker, the cooked material is a strip-shaped outer flame tip distribution section of the combustion plate. Since it is almost uniformly burned by the heat from the inner flame mouth distribution portion, an infrared burner suitable as a burner for cooking porcelain can be obtained.
【図面の簡単な説明】
【図１】 本発明実施の１例を示す斜面図
【図２】 図１の燃焼プレートの正面図
【図３】 図２図のIII−III線拡大截断面図
【図４】 燃焼プレ−トの変形例の正面図
【符号の説明】
２ 燃焼プレート ３ 炎口
Ａ 外周炎口分布部 Ｂ 内側炎口分布部 Ｃ
無炎口部BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of the present invention. FIG. 2 is a front view of the combustion plate of FIG. 1. FIG. 3 is an enlarged sectional view taken along line III-III of FIG. FIG. 4 is a front view of a modified example of the combustion plate [Explanation of symbols] 2 Combustion plate 3 Flame port A Outer peripheral flame port distribution portion B Inner flame port distribution portion C
Flameless mouth
─────────────────────────────────────────────────────
【手続補正書】
【提出日】平成６年１２月７日
【手続補正１】
【補正対象書類名】明細書
【補正対象項目名】０００４
【補正方法】変更
【補正内容】
【０００４】
【課題を解決するための手段】本発明はかゝる目的を達
成するため、燃焼プレートに、帯状の外周炎口分布部
と、該外周炎口分布部の内側に、外周炎口分布部と一部
で連なる帯状の内側炎口分布部とを設けたことを特徴と
する。
【手続補正２】
【補正対象書類名】明細書
【補正対象項目名】０００６
【補正方法】変更
【補正内容】
【０００６】
【実施例】本発明実施の１例を別紙図面につき説明す
る。図面で１はガスバーナ本体を示し、該ガスバーナ本
体１に方形で、多数の炎口３を備えた燃焼プレ−ト２を
取付けて赤外線バーナを構成する。該燃焼プレート２
は、例えば、後方排気型の焼物調理器（図示しない）内
の天部に、燃焼プレ−ト２を下向きに設けて使用するも
ので、この場合図１に矢示するごとく燃焼プレ−ト２の
一端から他端に向って排気が流れる。本発明はかゝるも
のに於いて、燃焼プレート２に、多数の炎口３を設けた
外周炎口分布部Ａと，該外周炎口分布部Ａの内側に、多
数の炎口３を設けた外周炎口分布部Ａと一部で連なる内
側炎口分布部Ｂとを設けた。─────────────────────────────────────────────────── ───
[Procedure amendment] [Date of submission] December 7, 1994 [Procedure amendment 1] [Document name for amendment] Specification [Item name for amendment] 0004 [Correction method] Change [Correction content] [0004] [Issue] to achieve A1 the present invention Hakakaru purposes to solve, in the combustion plate, and the belt-shaped outer peripheral flame hole distribution unit, to the inside of the outer circumferential flame hole distribution unit, the outer peripheral flame hole distribution unit and a part It is characterized in that a strip-shaped inner flame mouth distribution portion continuous with is provided. [Procedure Amendment 2] [Name of Document to be Amended] Specification [Name of Item to Amend] 0006 [Correction Method] Change [Details of Amendment] [Example] An example of carrying out the present invention will be described with reference to the attached drawings. In the drawing, reference numeral 1 denotes a gas burner body, and a square-shaped combustion plate 2 having a large number of flame openings 3 is attached to the gas burner body 1 to form an infrared burner. The combustion plate 2
For example, a combustion plate 2 is provided downward on a ceiling portion of a rear-exhaust-type porcelain cooker (not shown). In this case, as shown in FIG. Exhaust flows from one end to the other. In the present invention, the combustion plate 2 is provided with an outer peripheral flame port distribution portion A provided with a large number of flame ports 3 and a large number of flame ports 3 inside the outer peripheral flame port distribution portion A. Further, an outer peripheral flame outlet distribution portion A and an inner flame outlet distribution portion B partially connected to each other are provided.