JP5160140B2 - Burner - Google Patents

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JP5160140B2
JP5160140B2 JP2007119829A JP2007119829A JP5160140B2 JP 5160140 B2 JP5160140 B2 JP 5160140B2 JP 2007119829 A JP2007119829 A JP 2007119829A JP 2007119829 A JP2007119829 A JP 2007119829A JP 5160140 B2 JP5160140 B2 JP 5160140B2
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burner
combustion
air
hot water
mixing
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JP2008275259A (en )
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大志 小田
英雄 近澤
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株式会社パロマ
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/06Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head
    • F23D14/065Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head with injector axis inclined to the burner head axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/48Nozzles
    • F23D14/58Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F23D14/583Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration of elongated shape, e.g. slits

Description

本発明は、貯湯式給湯器等のガス燃焼器具に用いられるバーナに関する。 The present invention relates to a burner for use in gas-fired appliances such as a hot water storage type water heater.

バーナは、燃料ガスと燃焼用空気とが供給される混合管を有し、その混合管の下流側先端に混合室を形成したバーナ本体と、そのバーナ本体の上部で混合室と連通して設けられ、混合室で混合された燃料ガスと燃焼用空気との混合気を噴出させる炎孔を備えたバーナヘッドとからなるものがよく知られている。 Burner has a mixing tube where the fuel gas and combustion air is supplied, a burner body forming a mixing chamber downstream tip of the mixing tube, provided in communication with the mixing chamber at the top of the burner body It is those consisting of a mixed fuel gas in the mixing chamber and burner head with a flame hole for ejecting the mixture of the combustion air is well known. このようなバーナは、例えば特許文献1に示すように、貯湯式給湯器等のガス燃焼器具において、湯水等の加熱手段として用いられる。 Such burner, for example, as shown in Patent Document 1, in a gas combustion appliance such as a hot water storage type water heater is used as heating means the hot water or the like. ここで用いられるバーナは、貯湯室の下方に形成した燃焼室に設けられるブンゼン式で、ガスノズルの先端が臨み、燃焼用空気を吸引するスロート部を備えたバーナ本体と、そのバーナ本体上に載置され、周囲に炎孔を断続的に形成したバーナヘッドとから構成されている。 Burner used here is a Bunsen type provided in the combustion chamber which is formed below the hot water storage chamber, faces the tip of the gas nozzle, the burner body having a throat portion for sucking combustion air, placing on the burner body It is location, and a intermittently formed burner head burner port around.

特開2001−304691号公報 JP 2001-304691 JP

燃焼ガス中のNOx(窒素酸化物)の発生を抑制する観点から、バーナは、燃焼に必要な理論当量以上の空気を一次空気として吸入される全一次空気式とするのが望ましい。 From the viewpoint of suppressing the generation of NOx in the combustion gas (nitrogen oxides), burners, to the total primary air expression is desired to be inhaled theoretical or more equivalents of the air required for combustion as primary air. 全一次低負荷燃焼によって火炎の最高温度を低くすることができ、NOxの発生を抑えることができるからである。 The total primary low-load combustion can reduce the maximum temperature of the flame, is because it is possible to suppress the generation of NOx.
しかし、バーナの内圧が高いと一次空気の吸引が悪くなる。 However, when the internal pressure of the burner is high suction of the primary air becomes worse. 特に、特許文献1のバーナのように炎孔面積が小さいと、炎孔からの一次空気と燃焼用空気との混合気の噴出速度が大きくなって流体抵抗が増加し、内圧が高くなって十分な一次空気を吸引できないため、ファンを用いて燃焼用空気を強制的に供給する必要が生じ、コンパクト化を阻害してコストアップに繋がる。 In particular, the burner port area as in the Patent Document 1 burner is small, the fluid resistance increases the ejection speed of the mixture of combustion air and primary air from the burner ports is increased, sufficient internal pressure becomes high It can not be aspirated, such primary air, forcing it is necessary to supply combustion air using a fan, increasing the cost to inhibit compact.

そこで、本発明は、ファンを用いなくても十分な一次空気を吸引して燃料ガスと混合させることができ、全一次空気式として好適に使用可能なバーナを提供することを目的としたものである。 Accordingly, the present invention, even without using a fan to suck a sufficient primary air can be mixed with the fuel gas, it is intended to provide a suitably usable burner as an all primary air formula is there.

上記目的を達成するために、請求項1に記載の発明は、バーナヘッドを、 上下方向のスリット状の第1炎孔と、上下方向に並ぶ複数の円形の第2炎孔の列とが、周方向及び上下方向へ夫々交互に形成されてなる多数の炎孔を側面の略全周に穿設した円筒状として、バーナ本体の混合室の真上に配置する一方、混合管を、バーナヘッドの軸線と略直交する方向へ向けて形成し、バーナ本体内に、混合管を延長して混合室内へ突出し、突出端の開口が混合室の中心よりも混合室の内面寄りに位置する延長管を設けたことを特徴とするものである。 To achieve the above object, a first aspect of the present invention, a burner head, and the vertical direction of the slit-shaped first burner ports, and columns of a plurality of circular second fire holes arranged in the vertical direction, as the circumferential and cylindrical multiple burner ports consisting formed respectively alternately bored in a substantially entire circumference of the side in the vertical direction, while located directly above the mixing chamber of the burner body, a mixing tube, a burner head toward the axis direction substantially perpendicular to the formation of, in the burner body projects a mixing tube to extend to the mixing chamber, the extension tube which is located on the inner surface side of the mixing chamber than the center opening of the mixing chamber of the projecting end the is characterized in that provided.

請求項1に記載の発明によれば、円筒状のバーナヘッドにより十分な炎孔面積が確保できると共に、炎孔からの混合ガスの噴出速度も小さくなって流体抵抗が抑えられる。 According to the invention described in claim 1, together with a sufficient burner port area can be secured by a cylindrical burner head, fluid resistance is suppressed becomes smaller ejection speed of the mixed gas from the burner ports. 加えて、混合室からバーナヘッドへの混合気の供給もスムーズで均等に行われ、全体の高さ寸法も小さく抑えられる。 In addition, the supply of air-fuel mixture from the mixing chamber to the burner head smoothly performed evenly, the overall height can be suppressed small. よって、全一次空気式且つファンを用いない自然燃焼式のバーナとして好適に使用可能となり、コンパクト化やコストの削減が期待できる。 Therefore, preferably made available as a natural combustion type burner not using a primary aerated-type and fan, reduction of compact and cost can be expected. また、燃焼面が側面となるため、上部からの落下物が炎孔に堆積したりすることもない。 The combustion surface for a side surface, nor falling objects from above or deposited in the burner ports.
さらに 、必要な炎孔面積を第1炎孔で確保しつつ、第2炎孔で剛性を維持する好適な炎孔が形成可能となる。 Further, while ensuring the burner port area required by the first burner ports, suitable flame port maintaining the rigidity is possible to form the second burner ports.

以下、本発明の実施の形態を図面に基づいて説明する。 Hereinafter, an embodiment of the present invention with reference to the accompanying drawings.
図1は、バーナの一例を示す説明図で、上が平面、下が正面、右が右側面を夫々示す。 Figure 1 is an explanatory view showing an example of the burner, the upper plane, the lower front, right respectively show right side. バーナ1は、下側のバーナ本体2と、そのバーナ本体2上に載置されるバーナヘッド3とからなる。 Burner 1 comprises a burner body 2 of the lower, consisting of the burner head 3 which is placed on the burner body 2. まずバーナ本体2は、燃料ガス及び燃焼用空気が供給されるスロート部5を端部に備えた筒状の混合管4と、その混合管4の下流端に連設される円形の混合室6とを有し、上下一対の板金を全周に亘って中央でかしめ結合することで形成されている。 First burner body 2 includes a cylindrical mixing pipe 4 a throat portion 5 provided on the end portion where the fuel gas and combustion air is supplied, a circular mixing chamber provided continuously to the downstream end of the mixing pipe 4 6 has the door, is formed by caulking at the center over the pair of upper and lower sheet metal all around. 混合室6は、混合管4よりも大径の空間で、混合管4とは、水平方向となる混合室4の軸線に混合室6の軸線が垂直方向で直交するように連設されている。 Mixing chamber 6 is a space having a larger diameter than the mixing pipe 4, and the mixing tube 4, the axis of the mixing chamber 6 to the axis of the mixing chamber 4 to the horizontal direction is continuously provided to be orthogonal in the vertical direction .
また、混合管4には、内部管7が内設されている。 Further, the mixing tube 4, the inner tube 7 is disposed therein. この内部管7は、図2,3にも示すように、一端が混合管4内に挿入保持される管体で、バーナ本体2と同様に上下一対の板金を左右の側縁中央でかしめ結合してなり、他端は、混合室6内にその直径方向へ突出して、混合管4を延長する延長管8を形成している。 The inner tube 7, as shown in FIGS. 2 and 3, a tubular body one end of which is inserted into and held in the mixing tube 4, caulking a pair of upper and lower sheet metal similarly to the burner body 2 in the left and right side edge center and it becomes, the other end protrudes into the mixing chamber 6 to the diameter direction to form an extension pipe 8 to extend the mixing pipe 4. この延長管8の突出端は、開口9が上向きとなる傾斜状にカットされており、開口9の下方で延長管8の底面には、混合室6の底面に当接して延長管8を安定させるための面取部10が形成されている。 Protruding end of the extension pipe 8 is cut to the inclined shape of the aperture 9 facing upward, on the bottom surface of the extension pipe 8 below the opening 9, stabilize the extension pipe 8 in contact with the bottom surface of the mixing chamber 6 chamfered portion 10 is formed in order to.

一方、バーナヘッド3は、平面視が円形となる上板11と下板12と、両板11,12の周縁際を周回する側板13とからなる円筒状を呈し、図4(A)(B)にも示すように、外方へ拡開状に折り曲げた側板13の上下端を夫々上板11及び下板12の周縁で折り返してかしめ結合することで形成されている。 On the other hand, the burner head 3, the upper plate 11 and lower plate 12 which in plan view is circular, a cylindrical shape consisting of side plates 13 for circulating the time the peripheral edge of the two plates 11 and 12, FIG. 4 (A) (B to also as shown), are formed by caulking by folding the upper and lower ends of the side plate 13 by bending the expanded shape outwardly at the periphery of each upper plate 11 and lower plate 12. また、上板11には、熱応力による変形を吸収するために、径の異なるリング状のリブ14,14が同心円上に形成されている。 Further, the upper plate 11, in order to absorb deformation due to thermal stress, different annular ribs 14, 14 diameters are concentrically formed.
さらに、側板13には、図1にD部を拡大して示すように、上下方向に長いスリット状の第1炎孔15と、上下方向に4つ並ぶ円形の第2炎孔16,16・・の列とが、略全周に亘って周方向及び上下方向へ夫々交互に形成されている(図1では一部のみ図示)。 Further, the side plate 13, as shown in the enlarged view of the D portion in FIG. 1, a first burner ports 15 of long slit-like in the vertical direction, the vertical direction into four aligned circular second burner ports 16, 16, and-column, it is formed respectively alternately substantially in the circumferential direction and the vertical direction over the entire circumference (shown only partially in FIG. 1). このようにスリット状と円形とを併用したのは、スリット状の第1炎孔15によって炎孔面積を、円形の第2炎孔16によって剛性を夫々確保するためである。 Thus was a combination of the slit-shaped and circular, the flame port area by the first burner ports 15 a slit-shaped, in order to respectively secure rigidity by the second burner ports 16 of the circular. そして、下板12には、第1炎孔15及び第2炎孔16の総開口面積と略等しい開口面積を有する円形の連通孔17が形成されており、この連通孔17の周縁が、バーナ本体2の混合室6の上部でかしめ結合されて、バーナヘッド3を混合室6の真上で同軸上に配置している。 Then, the lower plate 12 is formed with a circular communication hole 17 having substantially the same opening area and the total opening area of ​​the first fire hole 15 and the second burner ports 16, the peripheral edge of the communication hole 17, the burner are caulking at the top of the mixing chamber 6 of the body 2 are arranged coaxially to the burner head 3 right above the mixing chamber 6.

以上の如く構成されたバーナ1は、例えば図5に示すような貯湯式給湯器20に用いられる。 Burner 1 constructed as described above is used in the hot water storage type water heater 20 as shown in FIG. 5, for example. この貯湯式給湯器20は、円筒形の本体21の上方に、図示しない上鏡板と下鏡板22とによって上下が閉塞される貯湯室23を有し、その貯湯室23の下方に燃焼室24を形成してなり、この燃焼室24内にバーナ1が設置されている。 The hot water storage type water heater 20, above the cylindrical body 21, having a hot water storage chamber 23 upper and lower is closed by the end plate on which is not shown and the lower end plate 22, a combustion chamber 24 below the hot water storage chamber 23 formed becomes, the burner 1 is installed in the combustion chamber 24. なお、貯湯室23の上方には、貯湯室23内へ水を供給する給水パイプと、貯湯室23内の湯を外部に取り出す給湯パイプ(何れも図示せず)とが設けられている。 Incidentally, above the hot water storage chamber 23, a water supply pipe for supplying water, (both not shown) hot water pipe for taking out the hot water of the hot water storage chamber 23 to the outside and is provided into the hot water storage chamber 23.
また、貯湯室23の軸心には、貯湯室23を貫通して本体21の上方に突出する排気管25が設けられて、燃焼室24で発生した燃焼ガスを本体21の外部に排出可能としている。 Further, the axial center of the hot water storage chamber 23, an exhaust pipe 25 that protrudes above the body 21 through the hot water storage chamber 23 is provided, the combustion gas generated in the combustion chamber 24 as can be discharged to the outside of the main body 21 there. この排気管25の内部には、通路を螺旋状とする図示しないバッフル板が設けられている。 Inside the exhaust pipe 25, a baffle plate is provided (not shown) for the passage and the spiral.

バーナ1は、燃焼室24の下部に設置した円盤状の載置台26上で、支持板27を介して支持されている。 Burner 1, on a disc-shaped susceptor 26 installed in the lower portion of the combustion chamber 24 is supported via a supporting plate 27. この状態で、先端を燃焼室24内に突出させたガスノズル28にバーナ本体2のスロート部5が対向し、バーナヘッド3が燃焼室24の中央に位置している。 In this state, the throat portion 5 of the burner body 2 is opposed to the gas nozzle 28 which projects the tip into the combustion chamber 24, the burner head 3 is positioned in the center of the combustion chamber 24. 29はパイロットバーナである。 29 is a pilot burner.
また、ここでのバーナ1は、バーナヘッド3が下鏡板22の下面側で下鏡板22に囲まれる空間内に突出するように支持板27に支持されて、その側面が貯湯室23に全周に亘って対向している。 Further, where the burner 1, the burner head 3 is supported by the support plate 27 so as to project into the space surrounded by the lower end plate 22 at the lower surface side of the lower end plate 22, the side surfaces in the hot water storage chamber 23 the entire periphery It faces over and in.

そして、載置台26の下方周縁には、燃焼用空気の給気口30,30・・が、周方向に所定間隔で複数形成されて、載置台26の内部を本体21の外部と連通させている。 Then, the lower periphery of the mounting table 26, the air supply port 30, 30 ... of the combustion air, in the circumferential direction formed with a plurality at predetermined intervals, the interior of the mounting table 26 by communication with the exterior of the body 21 there. また、載置台26の内部には、載置台26内を上下に仕切り、中央を開口した仕切板31が設けられる一方、燃焼室24におけるガスノズル28側には、仕切板31で仕切られる載置台26内部の上側空間と、バーナ本体2のスロート部5とを連通させた状態で燃焼室24内で区画する上下方向の通気路32が形成されている。 Inside the loading table 26, mounting partition the table 26 up and down, while the partition plate 31 having an open center is provided, the gas nozzle 28 side of the combustion chamber 24, the mounting table 26 partitioned by the partition plate 31 and inside the upper space, vertical air passage 32 for partitioning the combustion chamber 24 in a state where the communication between the throat portion 5 of the burner body 2 is formed. よって、外部の空気は、矢印で示すように、給気口30から載置台26内に進入した後、仕切板31の開口を通って通気路32に至り、通気路32を上昇してバーナ本体2へ導入可能となっている。 Therefore, the outside air, as indicated by the arrow, after entering into the stage 26 mounting the air supply opening 30 and reaches the air passage 32 through the opening of the partition plate 31, the burner body rises in the air passage 32 It has become a possible introduction to the 2.

よって、この貯湯式給湯器20では、本体21の外部に設けた図示しないコントローラの点火ツマミを押し操作すると、パイロットバーナ29へのガス流路が開いてパイロットバーナ29に点火される。 Therefore, in the hot water storage type water heater 20, when pressed the ignition knob of a controller (not shown) provided on the outside of the main body 21, the gas flow passage to the pilot burner 29 is ignited pilot burner 29 is opened. この点火を図示しない熱電対で検出すると、ガス流路の電磁弁が開弁保持されるため、そのまま点火ツマミを操作してメインガス流路を開くと、ガスノズル28から燃料ガスが噴出されてスロート部5からバーナ本体2に供給される。 Upon detecting a thermocouple (not shown) the ignition, the electromagnetic valve of the gas flow path is opened held, open the main gas flow path by operating directly ignition knob, the fuel gas is ejected from the gas nozzle 28 throat It is supplied from the parts 5 to the burner main body 2. この燃料ガスの噴出エネルギーによって、本体21外部の空気が先述のように給気口30から載置台26内及び通気路32を介してバーナ本体2の混合管4に吸入される。 The by ejection energy of fuel gas, the main body 21 outside air is sucked into the mixing pipe 4 of the burner main body 2 through the table 26 mounting the air supply port 30 and the air passage 32 as previously described.

このとき、バーナ本体2では、混合室6内に突出する延長管8によってスロート部5から開口9までの長さは十分確保されているので、燃料ガスと燃焼用空気とが好適に混合される。 At this time, the burner body 2, since the throat portion length from 5 to the opening 9 by extension pipe 8 protruding into the mixing chamber 6 is sufficiently secured, the fuel gas and combustion air are preferably mixed . 而も、開口9から噴出した混合気は、混合室6の内面に衝突し、そのまま二手に分かれて混合室6の内面に沿って反転するため、この流れにより、燃料ガスと燃焼用空気との混合がより促進されることになる。 Thus also, the air-fuel mixture jetted from the opening 9 collides with the inner surface of the mixing chamber 6, in order to invert directly along the inner surface of the mixing chamber 6 is divided into two hands, this flow of fuel gas and combustion air mixing will be more promoted. また、延長管8の両側で渦流が生じることもない。 Moreover, nor vortex flow is generated on both sides of the extension pipe 8.
混合室6内に混合気が満たされると、連通孔17を通ってバーナヘッド3内に混合気が供給され、第1、第2炎孔15,16から夫々噴出して燃焼する。 When the air-fuel mixture into the mixing chamber 6 is filled, the air-fuel mixture in the burner head 3 is supplied through the communication hole 17, first, burning and respectively ejected from the second burner ports 15 and 16. ここでは各炎孔15,16からの混合気の噴出速度は小さいため、各炎孔15,16に炎が接近し、側板13の略全面で表面燃焼が行われて炎孔の温度は800℃以上となる。 Here, since a small jetting speed of the air-fuel mixture from the burner ports 15 and 16, close flame in the burner ports 15 and 16, the temperature of substantially the entire surface combusted is performed burner ports of the side plate 13 is 800 ° C. greater than or equal to. また、円筒状の側面全面が燃焼面となることで、熱応力の影響も抑制される。 Further, a cylindrical side entire surface by a combustion surface, the influence of the thermal stress is also suppressed.

このバーナ1の燃焼によって生じた高温の燃焼ガスは、下鏡板22の下面に沿って上昇し、中央の排気管25を通って本体21の外部へ排出される。 High-temperature combustion gas generated by combustion of the burner 1 is increased along the lower surface of the lower end plate 22, and is discharged to the outside of the body 21 through the center of the exhaust pipe 25. この燃焼ガスの移動により、下鏡面22及び排気管25を介して貯湯室23内部の湯水が加熱される。 This movement of the combustion gas, hot water storage chamber 23 inside the hot water is heated via the lower mirror 22 and the exhaust pipe 25.
一方、バーナヘッド3の側面での燃焼によって生じる輻射熱は、波線矢印に示すようにバーナヘッド3から放射状に放熱されるが、バーナヘッド3の側面全周が貯湯室23に対向しているので、輻射熱がここから貯湯室23内の湯水へ効果的に伝わり、湯水を加熱することになる。 Meanwhile, radiant heat caused by the combustion in the side surface of the burner head 3 is is radiated radially from the burner head 3 as shown in broken line arrow, the side surface entire periphery of the burner head 3 faces the hot water storage chamber 23, radiant heat from here to the hot water of the hot water storage chamber 23 transmitted effectively, will heat the hot water.
こうして輻射熱が貯湯室23へ効果的に伝わることで、燃焼室24におけるバーナ1の下方部分が高温にならないため、給気口30からスロート部5に至る間の燃焼用空気の温度上昇が抑えられる。 Thus radiant heat that transmitted effectively to the hot water storage chamber 23, since the lower part of the burner 1 in the combustion chamber 24 does not become high temperature, the temperature rise of the combustion air between leading from the air supply port 30 to the throat part 5 is suppressed . よって、燃焼用空気の体積が膨張することがなく、十分な量の一次空気をバーナ1に取り込むことができ、低NOx化に繋がる。 Therefore, without the volume of the combustion air is expanded, it is possible to incorporate a sufficient amount of primary air to the burner 1, which leads to reduction in NOx.

このように、上記形態のバーナ1によれば、バーナヘッド3を、側面の略全周に多数の第1、第2炎孔15,16を穿設した円筒状として、バーナ本体2の混合室6の真上に配置する一方、混合管4を、バーナヘッド3の軸線と略直交する方向へ向けて形成したことで、十分な炎孔面積が確保できると共に、第1、第2炎孔15,16からの混合ガスの噴出速度も小さくなって流体抵抗が抑えられる。 Thus, according to the burner 1 of the above-described embodiment, the burner head 3, a plurality of first substantially entire circumference of the side surface, a cylindrical bored the second burner ports 15 and 16, the mixing chamber of the burner main body 2 while located directly above the 6, the mixing tube 4, by forming toward a direction substantially perpendicular to the axis of the burner head 3, can be ensured a sufficient burner port area, first, second burner ports 15 , fluid resistance is suppressed even smaller ejection speed of the mixed gas from the 16. 加えて、混合室6からバーナヘッド3への混合気の供給もスムーズで均等に行われ、全体の高さ寸法も小さく抑えられる。 In addition, the supply of mixture from the mixing chamber 6 to the burner head 3 smoothly performed evenly, the overall height can be suppressed small. よって、全一次空気式且つファンを用いない自然燃焼式のバーナとして好適に使用可能となり、コンパクト化やコストの削減が期待できる。 Therefore, preferably made available as a natural combustion type burner not using a primary aerated-type and fan, reduction of compact and cost can be expected. また、燃焼面が側面となるため、上部からの落下物が第1、第2炎孔15,16に堆積したりすることもない。 The combustion surface for a side surface, nor falling objects from above or deposited on the first, second burner ports 15 and 16.
特に、炎孔は、上下方向のスリット状の第1炎孔15と、上下方向に並ぶ複数の円形の第2炎孔16の列とが、周方向及び上下方向へ夫々交互に形成されてなる構成としたことで、必要な炎孔面積を第1炎孔15で確保しつつ、第2炎孔16で剛性を維持する好適な炎孔が形成可能となる。 In particular, the burner port is provided with a vertical direction of the first fire hole 15 slit-shaped, and columns of a plurality of circular second fire hole 16 arranged in the vertical direction becomes formed respectively alternately in the circumferential direction and the vertical direction by having a configuration, while securing the burner port area required by the first burner ports 15, suitable flame port maintaining the rigidity it is possible to form the second burner ports 16.

そして、ここでは、バーナ本体2の混合管4に、混合室6内へ突出する延長管8を設けたことで、内部で十分な混合距離を確保できる上、混合管4から混合室6に混合気が流れ込む際に渦流が生じないので、燃料ガスの噴出エネルギーを利用して必要な一次空気を吸引可能となり、混合室6での燃料ガスと燃焼用空気との混合も良好に行われる。 The mixing here, the mixing pipe 4 of the burner main body 2, the provision of the extension pipe 8 protruding into the mixing chamber 6, on internally can ensure a sufficient mixing distance, the mixing chamber 6 from the mixing pipe 4 since vortex when air flows does not occur, by using the ejection energy of fuel gas allows sucking the primary air required, mixing of the fuel gas in the mixing chamber 6 and the combustion air is also performed satisfactorily. また、延長管8の突出端を、開口9が上向きとなる傾斜状にカットしたことで、一次空気の吸引量がより多くなる好適な形態となっている。 Further, the projecting end of the extension tube 8, it was cut into an inclined shape in which an opening 9 facing upward, and has a suitable form suction amount of the primary air is more.

なお、バーナヘッドにおいて、炎孔は上記形態に限らず、大きさや形状、配置パターン等は適宜変更可能で、上板や下板の構造や結合形態も上記形態に限定するものではない。 Incidentally, in the burner head, the burner port is not limited to the above embodiment, the size and shape, arrangement pattern, etc. can be suitably changed, the structure and bonding form of the upper or lower plate is also not limited to the above embodiment. 例えば上板及び下板における側板とのかしめ部は、図6に示すように、上下板の対向側へくの字状に折曲させるようにすれば、強度がアップし、熱環境下での反りの防止が効果的に図られる。 For example crimped portion of the side plate in the upper and lower plates, as shown in FIG. 6, if such is bent in a shape of the opposite side hex of the upper and lower plates, the strength is up, under thermal environment prevention of warping can be achieved effectively.

その他、上記形態では、延長管の突出端を、開口が上向きとなる傾斜状にカットした形状としているが、これと逆に開口が下向きとなる傾斜状にカットしたり、開口が横向きとなる垂直方向にカットしたり等しても差し支えない。 Other, in the above embodiment, the protruded end of the extension tube, but the opening is shaped to cut into an inclined shape as the upward, made or cut opening and laterally inclined to open in the opposite and this is a downward vertical no problem even if such or cut in direction. これらの場合も延長管がないバーナ本体に比べて一次空気の吸引量は増加する。 Suction amount of the primary air also compared with the absence of the extension tube burner body in these cases will increase.
また、延長管は内部管の端部を利用するものに限らず、混合室内における混合管の開口縁に延長管に相当する部分のみを連結して延長管を形成することも可能である。 Further, an extension pipe is not limited to those utilizing the end of the inner tube, it is also possible to form the extension pipe by connecting only a portion corresponding to an extension pipe to an opening edge of the mixing tube in the mixing chamber.
そして、本発明のバーナは上記形態のような貯湯式給湯器に限らず、器具内を通過する水を熱交換器で加熱する給湯器等の他のガス燃焼器具においても加熱手段として使用可能である。 The burner of the present invention is not limited to the hot water storage type water heater as described above form, can be used the water passing through the device as well the heating means in the other gas combustion appliances water heater such as heating in a heat exchanger is there.

バーナの説明図で、上が平面、下が正面、右が右側面を夫々示す。 In illustration of the burner, the upper plane, the lower front, right respectively show right side. A−A線拡大断面図である。 Is an A-A line enlarged sectional view. (A)はB−B線断面図、(B)はC−C線断面図である。 (A) is sectional view taken along line B-B, (B) is a sectional view taken along line C-C. (A)は上板と側板とのかしめ部分の説明図、(B)は下板と側板とのかしめ部分の説明図である。 (A) is an explanatory view of a caulking part between the upper plate and the side plate, (B) is an explanatory view of a caulking part between the lower plate and the side plate. 貯湯式給湯器の下方部分を示す説明図である。 It is an explanatory view showing a lower portion of the hot water storage type water heater. (A)は上板と側板とのかしめ部分の変更例の説明図、(B)は下板と側板とのかしめ部分の変更例の説明図である。 (A) is an explanatory view of a modification of the caulked portion of the upper plate and the side plate, (B) is an explanatory view of a modification of the caulking portion between the lower plate and the side plate.

符号の説明 DESCRIPTION OF SYMBOLS

1・・バーナ、2・・バーナ本体、3・・バーナヘッド、4・・混合管、5・・スロート部、6・・混合室、7・・内部管、8・・延長管、9・・開口、11・・上板、12・・下板、13・・側板、15・・第1炎孔、16・・第2炎孔、17・・連通孔、20・・貯湯式給湯器、21・・本体、22・・下鏡板、23・・貯湯室、24・・燃焼室、26・・載置台、27・・支持板、28・・ガスノズル。 1 ... burner, 2 ... burner body, 3 ... burner head, 4 ... mixing tube, 5 ... throat portion, 6 ... mixing chamber 7 .. inner tube, 8 ... extension tube, 9 ... opening, 11 ... upper plate, 12 ... lower plate, 13 ... side plate 15 ... first burner ports, 16 ... second burner ports, 17 ... communication hole, 20 ... hot water storage type water heater, 21 ... body, 22 ... under the end plate, 23 ... hot water storage chamber, 24 ... combustion chamber, 26 ... table, 27 ... support plate 28 ... nozzle. 30・・給気口。 30 ... the air supply port.

Claims (1)

  1. 燃料ガス及び燃焼用空気が供給される混合管を有し、その混合管の下流側先端に円形の混合室を形成したバーナ本体と、そのバーナ本体の上部で前記混合室と連通して設けられ、前記混合室で混合された前記燃料ガスと燃焼用空気との混合気を噴出させる炎孔を備えたバーナヘッドとからなるバーナであって、 Has a mixing tube fuel gas and combustion air is supplied, a burner body forming a mixing chamber of a circular downstream tip of the mixing tube, provided in communication with the mixing chamber at the top of the burner body , a burner comprising a burner head mixed with a gas flame hole for ejecting the said fuel gas mixed in the mixing chamber and the combustion air,
    前記バーナヘッドを、 上下方向のスリット状の第1炎孔と、上下方向に並ぶ複数の円形の第2炎孔の列とが、周方向及び上下方向へ夫々交互に形成されてなる多数の炎孔を側面の略全周に穿設した円筒状として、前記バーナ本体の混合室の真上に配置する一方、前記混合管を、前記バーナヘッドの軸線と略直交する方向へ向けて形成し、前記バーナ本体内に、前記混合管を延長して前記混合室内へ突出し、突出端の開口が前記混合室の中心よりも前記混合室の内面寄りに位置する延長管を設けたことを特徴とするバーナ。 The burner head, and the vertical direction of the slit-shaped first burner ports, and columns of a plurality of circular second fire holes arranged in the vertical direction, the circumferential direction and a number of flame formed by formed respectively alternately vertically hole as a cylindrical bored in a substantially entire circumference of the side surface and the one which located directly above the mixing chamber of the burner body, said mixing tube, formed toward the axial direction substantially perpendicular of the burner head, in the burner body projects into the mixing chamber by extending the mixing tube, the opening of the projecting end is characterized in that a extension pipe located on the inner surface side of the said mixing chamber than the center of the mixing chamber burner.
JP2007119829A 2007-04-27 2007-04-27 Burner Active JP5160140B2 (en)

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ES08008063T ES2352860T3 (en) 2007-04-27 2008-04-25 Burner.
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US20080268394A1 (en) 2008-10-30 application
EP1985922A2 (en) 2008-10-29 application
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ES2352860T3 (en) 2011-02-23 grant

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