JPH09170747A - Gas combustion equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain a stable state of suction balance of supplied air and keep a superior combustion in respect to a variation in supplying amount of air by a method wherein a space between a burner base mounting plane and a nozzle base is partitioned so as to prevent a striking interference of combustion air in opposing burners. SOLUTION: An upper end 6 of a nozzle base is abutted against a mounting plane of a burner base 5, a space between a mounting plane of the burner base 5 and a nozzle base 8 is partitioned. Due to this fact, striking interference with combustion air at one group of opposing burners 1a is not generated, a difference of amount of sucked air sucked into both groups of burners 1a, 1b is kept within an allowable range, resulting in that irregular combustion in which the right group of burners 1b may generate a lifting combustion with excessive amount of air and the left group of burners 1a may generate a red flame combustion due to a lack of air is eliminated. In addition, a surface of the upper end 6 of the nozzle base 8 is abutted against a mounting plane of the burner base 5 to prevent striking interference of the combustion air, resulting in that the number of component parts may not be increased and a superior productivity can be attained.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、複数の燃焼用バーナを
有する強制吸気式のガス燃焼機器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forced combustion type gas combustion device having a plurality of combustion burners.

【０００２】[0002]

【従来の技術】従来より、異常燃焼（赤火，リフティン
グ，バックファイア）を防止し、均一な火炎を維持する
ために、バーナの吸入口と送風ファンとの間の給気路に
整流板を設け、該整流板を通して燃焼用空気を供給し、
各バーナへの吸気を均一に供給するガス燃焼機器が知ら
れている。例えば、図４に示す強制吸気式ガス給湯器２
０は、燃焼用空気を供給するファン１４と、その下流に
整流板２と、更にその下流にバーナ組立１とを設け、フ
ァン１４からの燃焼用空気を整流板２を介してバーナの
吸入口に供給するようにしている。2. Description of the Related Art Conventionally, in order to prevent abnormal combustion (red fire, lifting, backfire) and maintain a uniform flame, a straightening plate is provided in the air supply passage between the burner inlet and the blower fan. Provided, supplying combustion air through the straightening plate,
A gas combustion device that uniformly supplies intake air to each burner is known. For example, the forced intake type gas water heater 2 shown in FIG.
0 is provided with a fan 14 for supplying combustion air, a straightening vane 2 downstream thereof, and a burner assembly 1 further downstream thereof, and burns air from the fan 14 through the straightening vane 2 through a burner suction port. I am trying to supply it to.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、吸入口
を対向させた省スペースタイプのバーナ組立１を備えた
ガス給湯器においては、空燃比制御による空気調整の場
合や排気筒９に風圧がかかって空気の供給量が変動した
場合、図５に示すように、所定の空気供給量において空
気流がバランスするように調整されている整流板２の開
口部３での配分バランスがこわれ、対向するバーナ１
ａ，１ｂに供給される吸気バランスもこわれる。そのた
め、一方のバーナ１ｂは空気過剰になり、他方のバーナ
１ａは空気不足になるといった現象が起こり、リフティ
ング，赤火燃焼といった異常燃焼が生じる問題が有っ
た。そこで、整流板２の開口部３の面積を小さくし、供
給空気の整流を確実に行なうことも考えられるが、今度
は通過抵抗が増すために能力の大きなファン１４が必要
となり、器具のコンパクト設計が妨げられるといった問
題が生じてくる。本発明のガス燃焼機器は、上記課題を
解決し、供給空気の吸気バランスを安定させ、供給量の
変動に対しても良好な燃焼を維持するガス燃焼機器を提
供することを目的とする。However, in the gas water heater provided with the space-saving type burner assembly 1 in which the suction ports are opposed to each other, in the case of air adjustment by air-fuel ratio control or when wind pressure is applied to the exhaust pipe 9, When the supply amount of the air flow fluctuates, as shown in FIG. 5, the distribution balance in the opening portion 3 of the straightening vane 2 which is adjusted so that the air flow is balanced at a predetermined air supply amount is broken, and the opposing burner 1 is damaged.
The intake balance supplied to a and 1b is also broken. Therefore, there is a problem that one burner 1b becomes excessive in air and the other burner 1a becomes insufficient in air, resulting in abnormal combustion such as lifting and red-fire combustion. Therefore, it is conceivable to reduce the area of the opening 3 of the rectifying plate 2 to surely rectify the supply air, but this time, a fan 14 having a large capacity is required to increase the passage resistance, and the appliance is compactly designed. Will be hindered. An object of the present invention is to provide a gas combustion device that solves the above problems, stabilizes the intake air balance of supply air, and maintains good combustion even when the supply amount changes.

【０００４】[0004]

【課題を解決するための手段】上記課題を解決する本発
明のガス燃焼機器は、燃焼用空気と燃料ガスとを吸入口
から吸入して燃焼する複数のバーナと、上記バーナに上
記燃焼用空気を供給する給気ファンと、上記バーナの吸
入口を対向させると共に、上記吸入口の上方に上記バー
ナを載置する載置面を備えたバーナ台と、上記載置面の
下方に設けられ、上記対向する吸入口にそれぞれ臨むよ
うに燃料噴射用ノズルを固定したノズル台とを備えたガ
ス燃焼機器において、上記バーナ台の載置面とノズル台
との空間を仕切り、対向する上記バーナの上記燃焼用空
気の衝突干渉を防止することを要旨とする。A gas combustion apparatus according to the present invention which solves the above-mentioned problems has a plurality of burners for inhaling combustion air and fuel gas from an intake port for combustion, and the above-mentioned combustion air for the burners. An air supply fan for supplying the suction port of the burner and a burner stand having a mounting surface on which the burner is mounted above the suction port, and below the mounting surface. In a gas combustion apparatus having a nozzle base fixed with a fuel injection nozzle so as to face each of the opposed intake ports, a space between the mounting surface of the burner base and the nozzle base is partitioned, and the burner of the opposed burner is partitioned. The gist is to prevent collision interference of combustion air.

【０００５】また、本発明の請求項２記載のガス燃焼機
器は、上記バーナ台の載置面にノズル台の上端を当接し
て上記空間を仕切ったことを要旨とする。A gas combustion apparatus according to a second aspect of the present invention is characterized in that the upper end of the nozzle base is brought into contact with the mounting surface of the burner base to partition the space.

【０００６】上記構成を有する本発明のガス燃焼機器で
は、バーナ台の載置面とノズル台との空間を仕切ったた
め対向する一方のバーナの燃焼用空気が該空間を通って
他方のバーナの燃焼用空気と衝突干渉するといったこと
が無くなるので、空気量の供給変動により燃焼用空気の
供給バランスがこわれ、対向するバーナに向う空気量が
異なっても、両バーナに供給される吸気量の違いは許容
範囲内にとどまり、一方のバーナは空気過剰でリフティ
ング燃焼を生じ、他方のバーナは空気不足で赤火燃焼を
生じる、といった問題は起こらない。In the gas combustion apparatus of the present invention having the above structure, since the space between the mounting surface of the burner base and the nozzle base is partitioned, the combustion air of one of the opposing burners passes through the space and the other burner burns. Since there is no collision interference with the working air, the supply balance of the combustion air is broken due to fluctuations in the supply of air, and even if the amount of air directed to the opposite burner differs, the difference in the amount of intake air supplied to both burners will not change. The burner stays within the allowable range, one burner causes lifting combustion due to excess air, and the other burner causes red fire combustion due to insufficient air.

【０００７】また、請求項２記載のガス燃焼機器では、
バーナ台の載置面にノズル台の上端面を当接させて、対
向するバーナに向う燃焼用空気の衝突干渉を防止したの
で、製造が容易であり、部品点数の増加も無く生産性が
良い。Further, in the gas combustion equipment according to claim 2,
The upper end surface of the nozzle base is brought into contact with the mounting surface of the burner base to prevent collision interference of the combustion air toward the opposite burner, which facilitates the manufacturing and increases the number of parts, thus improving the productivity. .

【０００８】[0008]

【発明の実施形態】以上説明した本発明の構成・作用を
一層明らかにするために、以下本発明のガス燃焼機器の
実施例について説明する。図１は一実施例としてのガス
給湯器の概略構成図である。なお、図１においては通水
系及び温度制御関係については省略されている。このガ
ス給湯器１０は、強制吸気式ガス給湯器であって、外胴
ケーシング１７と、外胴ケーシング１７内の略中央に設
けられた燃焼室１８と、燃焼室１８の上方に設けられた
熱交換器１２と、燃焼室１８内でガス燃焼を行う対向す
るバーナ群１ａ，１ｂを奥向きに列設したバーナ組立１
と、燃焼用空気を燃焼室１８に供給する給気ファン１４
と、給気ファン１４から吐出された燃焼用空気を整流し
て燃焼室１８へ送る多孔整流板２とが設けられる。ま
た、バーナへのガス供給路としてのガス導管１６にはそ
の上流側からガス流路を開閉する元電磁弁１５と、ガス
流量を調整する比例制御弁１１とが設けられる。そし
て、こうしたガス供給量や空気供給量は、燃焼コントロ
ーラ１３により制御される。BEST MODE FOR CARRYING OUT THE INVENTION In order to further clarify the constitution and operation of the present invention described above, examples of the gas combustion equipment of the present invention will be described below. FIG. 1 is a schematic configuration diagram of a gas water heater as one embodiment. Note that, in FIG. 1, the water flow system and the temperature control relationship are omitted. The gas water heater 10 is a forced intake type gas water heater, and includes an outer casing 17, a combustion chamber 18 provided substantially in the center of the outer casing 17, and a heat provided above the combustion chamber 18. The burner assembly 1 in which the exchanger 12 and the opposed burner groups 1a and 1b that perform gas combustion in the combustion chamber 18 are arranged in a row in the depth direction
And an air supply fan 14 for supplying combustion air to the combustion chamber 18.
And a perforated baffle plate 2 for rectifying the combustion air discharged from the air supply fan 14 and sending it to the combustion chamber 18. In addition, a gas conduit 16 serving as a gas supply path to the burner is provided with an original solenoid valve 15 that opens and closes a gas flow path from its upstream side, and a proportional control valve 11 that adjusts a gas flow rate. Then, the gas supply amount and the air supply amount are controlled by the combustion controller 13.

【０００９】バーナ組立１は、図２，３に示すように、
バーナ群１ａ，１ｂと、バーナ群１ａ，１ｂを載置する
バーナ台５と、燃料噴射用ノズル７を固定したノズル台
８とから構成される。バーナ台５は、左右の奥向きに列
設したバーナ吸入口４を固定する固定穴１９と、その上
方にバーナ群１ａ，１ｂを載置する載置面２２を有し、
載置面２２にはバーナの位置決め固定する固定溝２１が
設けられている。ノズル台８は、左右の奥向きに燃料噴
射用ノズル７を列設し、その上端面６がバーナ台５の載
置面２２の下方に当接するように固定されている。The burner assembly 1, as shown in FIGS.
The burner groups 1a and 1b, the burner table 5 on which the burner groups 1a and 1b are placed, and the nozzle table 8 to which the fuel injection nozzles 7 are fixed. The burner stand 5 has a fixing hole 19 for fixing the burner suction ports 4 arranged in the left and right inward direction, and a mounting surface 22 for mounting the burner groups 1a and 1b above the fixing hole 19.
The mounting surface 22 is provided with a fixed groove 21 for positioning and fixing the burner. The nozzle base 8 has fuel injection nozzles 7 arranged in a row in the left and right directions, and is fixed so that an upper end surface 6 of the nozzle base 8 abuts below a mounting surface 22 of the burner base 5.

【００１０】次に、バーナ群１ａ，１ｂに吸入される燃
焼用空気の衝突干渉について説明する。燃焼開始ボタン
（図示略）を押すと給気ファン１４が作動し、燃焼用空
気を供給し始める。そして、燃焼用空気は多孔整流板２
でバランス配分され燃焼室１８に供給される。そこで、
燃焼用空気の供給が安定している時は、左右のバーナ群
１ａ，１ｂに供給される吸気のバランスは保たれ、両バ
ーナ群における吸入量は同等となり良好な燃焼状態を維
持するが、燃焼量の切換えに伴なう空気量の変更が行な
われた場合や排気筒９に風圧がかかって空気量の供給変
動が生じた時、多孔整流板２の開口部３での供給バラン
スがこわれる。Next, the collision interference of the combustion air sucked into the burner groups 1a and 1b will be described. When a combustion start button (not shown) is pressed, the air supply fan 14 operates to start supplying combustion air. Then, the combustion air is perforated by the porous straightening plate 2.
Are balanced and distributed to the combustion chamber 18. Therefore,
When the supply of combustion air is stable, the balance of the intake air supplied to the left and right burner groups 1a and 1b is maintained, the intake amounts in both burner groups are equal, and a good combustion state is maintained. The supply balance at the opening 3 of the perforated baffle plate 2 is broken when the air amount is changed in accordance with the change of the amount or when the air pressure is applied to the exhaust pipe 9 to cause the supply change of the air amount.

【００１１】こうした場合、従来のものでは、図５に示
すように、バーナ台５の載置面２２とノズル台８との空
間で左右のバーナ群１ａ，１ｂに供給される燃焼用空気
が衝突干渉し、対向するバーナ群１ａ，１ｂに供給され
る吸気のバランスはこわれ、右のバーナ群１ｂは空気過
多、左のバーナ群１ａは空気不足となる現象が生じる。
そのため、右のバーナ群１ｂは空気過剰によるリフティ
ング，バックファイア燃焼を生じ、左のバーナ群１ａは
空気不足による赤火燃焼を生じてしまう。In such a case, in the conventional case, as shown in FIG. 5, combustion air supplied to the left and right burner groups 1a and 1b collides in the space between the mounting surface 22 of the burner table 5 and the nozzle table 8. The intake air supplied to the opposing burner groups 1a and 1b interferes with each other, and the right burner group 1b has excessive air and the left burner group 1a has insufficient air.
Therefore, the right burner group 1b causes lifting and backfire combustion due to excess air, and the left burner group 1a causes red fire combustion due to insufficient air.

【００１２】これに対して、本実施例では図２に示すよ
うに、ノズル台上端６をバーナ台５の載置面２２に当接
させてバーナ台５の載置面２２とノズル台８との空間を
仕切ったので、対向する一方のバーナ群１ａの燃焼用空
気がその空間を通って他方のバーナ１ｂの燃焼用空気と
衝突干渉するといったことが無くなり、両バーナ群１
ａ，１ｂに吸入される空気吸入量の違いは許容範囲内の
差にとどまり、右のバーナ群１ｂは空気過剰でリフティ
ング燃焼を生じ、左のバーナ群１ａは空気不足で赤火燃
焼を生じる、といったことはなくなる。On the other hand, in this embodiment, as shown in FIG. 2, the upper end 6 of the nozzle base is brought into contact with the mounting surface 22 of the burner base 5 so that the mounting surface 22 of the burner base 5 and the nozzle base 8 are connected to each other. Since the space of the burner is divided, the combustion air of the one burner group 1a facing each other does not collide with the combustion air of the other burner 1b through the space and interfere with each other.
The difference in the amount of air sucked into a and 1b remains within the allowable range, the right burner group 1b causes lifting combustion due to excess air, and the left burner group 1a causes red fire combustion due to insufficient air. There is no such thing.

【００１３】以上説明したように、本実施例のガス給湯
器によれば、バーナ台５の載置面２２下方にノズル台８
の上端６面を当接し、対向するバーナ群１ａ，１ｂの燃
焼用空気の衝突干渉を防止したので、空気供給量が変動
しても左右バーナ群１ａ，１ｂの吸入空気量の違いは許
容範囲内であり、異常燃焼することはない。また、バー
ナ台５の載置面２２にノズル台８の上端６面を当接する
ことで燃焼用空気の衝突干渉を防止したので、部品点数
の増加も無く生産性が良い。以上本発明の実施例につい
て説明したが、本発明はこうした実施例に何等限定され
るものではなく、例えば対向する吸入口を構成するバー
ナを有する燃焼器であればよく、本発明の要旨を逸脱し
ない範囲に於いて、種々なる態様で実施し得る事は勿論
である。As described above, according to the gas water heater of this embodiment, the nozzle base 8 is provided below the mounting surface 22 of the burner base 5.
Since the upper end 6 surfaces of the burner groups are in contact with each other to prevent the collision interference of the combustion air of the opposing burner groups 1a and 1b, the difference in the intake air amount of the left and right burner groups 1a and 1b is within the allowable range even if the air supply amount changes. It is inside and there is no abnormal combustion. Further, since the upper surface 6 of the nozzle base 8 is brought into contact with the mounting surface 22 of the burner base 5 to prevent the collision interference of the combustion air, the number of parts is not increased and the productivity is good. Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments. For example, a combustor having burners forming opposed suction ports may be used, which deviates from the gist of the present invention. It is needless to say that the present invention can be carried out in various modes as long as it does not.

【００１４】[0014]

【発明の効果】以上詳述したように、本発明のガス燃焼
機器によれば、空気量の供給変動による燃焼用空気の衝
突干渉を防止したので、対向するバーナの吸気バランス
のこわれによる異常燃焼が防止できるという優れた効果
を奏する。また、バーナ台の載置面とノズル台の上端面
を接着するといった簡単なもので、部品点数の増加も無
く生産性が良い。As described in detail above, according to the gas combustion apparatus of the present invention, the collision interference of the combustion air due to the fluctuation of the supply of the air amount is prevented, so that the abnormal combustion due to the breakage of the intake balance of the opposing burner is caused. Has an excellent effect of preventing In addition, since the mounting surface of the burner base and the upper end surface of the nozzle base are simply bonded, the productivity is good without an increase in the number of parts.

【図面の簡単な説明】[Brief description of the drawings]

【図１】一実施例としての強制吸気式給湯器の概略図で
ある。FIG. 1 is a schematic diagram of a forced-air intake type water heater as one embodiment.

【図２】一実施例としての空気吸入部の概略説明図であ
る。FIG. 2 is a schematic explanatory view of an air suction section as one embodiment.

【図３】一実施例としてのバーナ台，ノズル台の概略図
である。FIG. 3 is a schematic view of a burner stand and a nozzle stand as one embodiment.

【図４】従来例としての強制吸気式給湯器の概略図であ
る。FIG. 4 is a schematic diagram of a forced-air intake type water heater as a conventional example.

【図５】従来例としての空気吸入部の概略説明図であ
る。FIG. 5 is a schematic explanatory view of an air intake section as a conventional example.

【符号の説明】[Explanation of symbols]

１…バーナ組立 １ａ，１ｂ…バーナ群 ２…多孔整流板 ４…吸入口 ５…バーナ台 ６…ノズル台上端 ７…ノズル ８…ノズル台 １０…強制吸気式給湯器 １３…燃焼コントローラ １４…給気ファン ２１…固定溝 ２２…載置面 DESCRIPTION OF SYMBOLS 1 ... Burner assembly 1a, 1b ... Burner group 2 ... Perforated straightening vane 4 ... Suction port 5 ... Burner stand 6 ... Nozzle stand top 7 ... Nozzle 8 ... Nozzle stand 10 ... Forced intake type water heater 13 ... Combustion controller 14 ... Air supply Fan 21 ... Fixing groove 22 ... Mounting surface

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 燃焼用空気と燃料ガスとを吸入口から吸
入して燃焼する複数のバーナと、 上記バーナに上記燃焼用空気を供給する給気ファンと、 上記バーナの吸入口を対向させると共に、上記吸入口の
上方に上記バーナを載置する載置面を備えたバーナ台
と、 上記載置面の下方に設けられ、上記対向する吸入口にそ
れぞれ臨むように燃料噴射用ノズルを固定したノズル台
とを備えたガス燃焼機器において、 上記バーナ台の載置面とノズル台との空間を仕切り、対
向する上記バーナの上記燃焼用空気の衝突干渉を防止す
ることを特徴とするガス燃焼機器。1. A plurality of burners for inhaling combustion air and fuel gas from an intake port for combustion, an air supply fan for supplying the combustion air to the burner, and an intake port of the burner facing each other. , A burner table having a mounting surface for mounting the burner above the suction port, and a fuel injection nozzle fixed below the mounting surface and facing the opposing suction port. In a gas combustion device provided with a nozzle base, a space between the mounting surface of the burner base and the nozzle base is partitioned to prevent collision interference of the combustion air of the opposing burner with each other. . 【請求項２】 上記バーナ台の載置面にノズル台の上端
を当接して上記空間を仕切ったことを特徴とする請求項
１記載のガス燃焼機器。2. The gas combustion device according to claim 1, wherein the upper surface of the nozzle base is brought into contact with the mounting surface of the burner base to partition the space.