JPH1130401A - Boiler having fin for heat absorption crossing combustion gas flow - Google Patents

Boiler having fin for heat absorption crossing combustion gas flow

Info

Publication number
JPH1130401A
JPH1130401A JP19926897A JP19926897A JPH1130401A JP H1130401 A JPH1130401 A JP H1130401A JP 19926897 A JP19926897 A JP 19926897A JP 19926897 A JP19926897 A JP 19926897A JP H1130401 A JPH1130401 A JP H1130401A
Authority
JP
Japan
Prior art keywords
combustion gas
water pipe
heat absorbing
fin
heat
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.)
Pending
Application number
JP19926897A
Other languages
Japanese (ja)
Inventor
Shigeru Kuroki
茂 黒木
Naomasa Ohata
直正 大畑
Original Assignee
Samson Co Ltd
株式会社サムソン
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Samson Co Ltd, 株式会社サムソン filed Critical Samson Co Ltd
Priority to JP19926897A priority Critical patent/JPH1130401A/en
Publication of JPH1130401A publication Critical patent/JPH1130401A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To cause absorption of quantities of heats by devising the shape and arrangement of fins for heat absorption. SOLUTION: Two water tube walls each composed of a plurality of water tubes 4 arranged in parallel and a fin 8 for closure closing a space between the water tubes 4 are formed. A part nipped between the two water tube walls forms a combustion gas passage and combustion gas is caused to flow through a combustion gas passage in parallel to the water tube axis of the water tube 4 to absorb heat. In a so formed boiler, Two or more trains of fin trains for heat absorption formed in a way that fan sheet-form fins 11 for heat absorption are arranged in a number of stages in a direction extending vertically to a water tube axis and crossing a combustion gas flow are arranged at a part 15 fronting on the combustion gas passages of the water tubes 4, and a combustion gas main flow part 14 having no fin for heat absorption is arranged between the fin trains for heat absorption paralleling each other.

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、燃焼ガス流に対し交差
する熱吸収用フィンを設けたボイラに関するものであ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boiler provided with heat absorbing fins crossing a combustion gas flow.
【0002】[0002]
【従来の技術】水管表面に燃焼ガスを流動させて燃焼ガ
スの熱を水管に吸収させる場合、より多くの熱を吸収さ
せるために水管表面へ熱吸収用フィンを設けることがあ
る。熱吸収用フィンを燃焼ガスの流れに対して交差方向
に取り付ける場合、熱吸収用フィンの間隔を所定の値以
上開けておくと、図6に記載のように、燃焼ガスは熱吸
収用フィンの先端を通り過ぎた部分で渦を形成し、燃焼
ガスが熱吸収用フィンの先端から水管表面へ達する流れ
が形成されるために熱吸収量が増加するが、熱吸収用フ
ィン前後の間隔が広く必要であるため熱吸収用フィンは
少ししか設置できず、熱吸収量の増加には限界がある。
また、図7に記載のように熱吸収用フィン前後の間隔を
狭くし、熱吸収用フィンの設置数を増加させると、燃焼
ガスは渦を形成する前に次の熱吸収用フィンに達してし
まい、燃焼ガスは水管から離れた部分を流れることとな
るため、熱吸収用フィンによる熱の吸収効率が悪く、熱
吸収用フィンを多く設置しても熱吸収量はわずかしか増
加しないこととなる。
2. Description of the Related Art When a combustion gas is caused to flow on the surface of a water pipe and heat of the combustion gas is absorbed by the water pipe, a heat absorbing fin may be provided on the surface of the water pipe in order to absorb more heat. When the heat absorbing fins are attached in a direction crossing the flow of the combustion gas, if the interval between the heat absorbing fins is larger than a predetermined value, as shown in FIG. A vortex is formed at the point past the tip, and the flow of combustion gas from the tip of the heat absorbing fin to the water pipe surface is increased, so the heat absorption increases, but the distance before and after the heat absorbing fin is required to be wide Therefore, only a small number of heat absorbing fins can be installed, and there is a limit to an increase in heat absorption.
Further, as shown in FIG. 7, when the distance between the front and rear of the heat absorbing fins is reduced and the number of heat absorbing fins is increased, the combustion gas reaches the next heat absorbing fin before forming a vortex. As a result, since the combustion gas flows in a portion away from the water pipe, the heat absorption efficiency of the heat absorption fins is poor, and even if a large number of heat absorption fins are installed, the heat absorption amount increases only slightly. .
【0004】[0004]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、熱吸収用フィンの形状と配置を工夫するこ
とによってより多くの熱を水管に吸収させることができ
るようにすることにある。
The problem to be solved by the present invention is to make it possible to absorb more heat into the water pipe by devising the shape and arrangement of the heat absorbing fins. .
【0005】[0005]
【課題を解決するための手段】平行に設けた複数の水管
と該水管の間を閉塞する閉塞用フィンからなる水管壁を
2面形成し、2面の水管壁で挟まれた部分を燃焼ガス通
路としておき、燃焼ガス通路に前記水管の水管軸に対し
て平行に燃焼ガスを流動させて熱を吸収するボイラにお
いて、水管の燃焼ガス通路に面している部分に水管軸と
は垂直で燃焼ガス流に対して交差する向きに扇紙の形の
熱吸収用フィンを多数段設ることで形成した熱吸収用フ
ィン列を2列以上平行に設け、平行な熱吸収用フィン列
の間に熱吸収用フィンの無い燃焼ガス主流動部を設け
る。
A water pipe wall comprising a plurality of water pipes provided in parallel and a closing fin for closing between the water pipes is formed on two surfaces, and a portion sandwiched between the two water pipe walls is formed. In the boiler which absorbs heat by flowing the combustion gas in the combustion gas passage parallel to the water pipe axis of the water pipe in a combustion gas passage, a portion of the water pipe facing the combustion gas passage is perpendicular to the water pipe axis. At least two rows of heat absorbing fins formed by providing a plurality of fan-shaped heat absorbing fins in a direction intersecting with the combustion gas flow are provided in parallel with each other. A main flow portion of the combustion gas having no heat absorbing fin is provided therebetween.
【0006】[0006]
【発明の実施の形態】本発明の一実施例を図面を用いて
説明する。缶体の上部には環状の上部管寄せ1、下部に
も環状の下部管寄せ2が設けられ、上下の管寄せの間を
環状に並んだ内側水管3と外側水管4が連結しており、
水管と管寄せの連結部は耐火材13で覆っている。内側
水管3と外側水管4は、内側通煙口5および外側通煙口
6が設けられる水管端部以外の部分で、それぞれの隣接
する水管の間を管軸方向に平行な閉塞用フィン8で閉塞
しており、内側水管3と外側水管4の間には燃焼ガス通
路7が形成される。内側水管3で囲まれたボイラ中心部
分は燃焼室9であり、燃焼室9上部にバーナ10を設け
る。内側水管下部には閉塞用フィン8を設けていない内
側通煙口5が燃焼室9を取り囲むように設けられてお
り、内側通煙口5によって燃焼室9と燃焼ガス通路7が
接続され、外側水管上部の閉塞用フィン8を設けていな
い外側通煙口6によって燃焼ガス通路7を送られてきた
燃焼排ガスをボイラの周方向に排出し、その後は煙道1
2より排出させるようにしている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. An annular upper header 1 is provided at the upper part of the can body, and an annular lower header 2 is also provided at the lower part. The inner water pipe 3 and the outer water pipe 4 are arranged in an annular shape between the upper and lower headers.
The connection between the water pipe and the header is covered with a refractory material 13. The inner water pipe 3 and the outer water pipe 4 are formed by a closing fin 8 parallel to the pipe axis direction between the adjacent water pipes at portions other than the end of the water pipe where the inner smoke port 5 and the outer smoke port 6 are provided. It is closed, and a combustion gas passage 7 is formed between the inner water pipe 3 and the outer water pipe 4. The central portion of the boiler surrounded by the inner water pipe 3 is a combustion chamber 9, and a burner 10 is provided above the combustion chamber 9. At the lower part of the inner water pipe, an inner smoke passage 5 not provided with the closing fin 8 is provided so as to surround the combustion chamber 9, and the combustion chamber 9 and the combustion gas passage 7 are connected by the inner smoke passage 5. The combustion exhaust gas sent through the combustion gas passage 7 by the outer smoke passage 6 without the closing fin 8 at the upper part of the water pipe is discharged in the circumferential direction of the boiler.
2 to discharge.
【0007】外側水管4の燃焼ガス通路に面した表面で
ある水管伝熱面15には、同心円で半径が異なり円弧角
の等しい2つの弧と、それぞれの弧の両端を通る2つの
半径で囲まれている扇紙の形の熱吸収用フィン11を扇
紙形の面が燃焼ガス流に対して交差するように多数段設
けておく。熱吸収用フィン11の円弧角は水管伝熱面の
円弧角の半分よりも小さな角度とし、熱吸収用フィン1
1を多数段設けた熱吸収用フィン列を1本の水管の水管
伝熱面上に2列平行に設けておき、2列の熱吸収用フィ
ン列の間には熱吸収用フィン11の無い空間である燃焼
ガス主流動部14を設ける。
The water pipe heat transfer surface 15, which is the surface of the outer water pipe 4 facing the combustion gas passage, is surrounded by two concentric arcs having different radii and the same arc angle, and two radii passing through both ends of each arc. The fan-shaped heat absorbing fins 11 are provided in multiple stages so that the fan-shaped surface intersects the combustion gas flow. The arc angle of the heat absorbing fins 11 is smaller than half the arc angle of the water pipe heat transfer surface.
Two rows of heat absorbing fins 1 are provided in parallel on the water pipe heat transfer surface of one water pipe, and there is no heat absorbing fin 11 between the two rows of heat absorbing fins. A combustion gas main flow portion 14 which is a space is provided.
【0008】バーナ10を燃焼させると、燃焼室9内で
高温の燃焼ガスが発生し、まず最初に内側水管3の燃焼
室9側の面を加熱する。続いて燃焼ガスは内側通煙口5
より燃焼ガス通路7内へ達し、燃焼ガス通路7内を下部
から上部へ流動しながら内側水管3と外側水管4の燃焼
ガス通路7側の面を加熱する。この時、燃焼ガスは主に
燃焼ガス主流動部14を流れ、燃焼ガス主流動部14よ
り左右に設けられている熱吸収用フィン列での前後の熱
吸収用フィン11間部分に燃焼ガスが導入される。燃焼
ガス主流動部14から熱吸収用フィン11の間部分に導
入された燃焼ガスは横方向へ流動することとなり、熱吸
収用フィン11の間部分の空間には渦の形成を妨害する
ものが無いため横方向へ向けての渦が形成される。その
ため、熱吸収用フィン11の上面、下面および、熱吸収
用フィン11の間部分の水管伝熱面15に燃焼ガスが接
し、熱吸収用フィン11と水管伝熱面15では燃焼ガス
の熱を多く吸収することができ、外側水管4の熱吸収量
を増やすことができる。上記のように燃焼ガス主流動部
14を設けて熱吸収用フィン11の間部分に横方向への
渦を形成する場合、熱吸収用フィンを多く設置すること
ができるため、熱吸収量は非常に多くなる。水管を加熱
することで温度の低下した燃焼排ガスは外側通煙口6、
煙道12を通って排出される。
When the burner 10 is burned, high-temperature combustion gas is generated in the combustion chamber 9, and first, the surface of the inner water pipe 3 on the combustion chamber 9 side is heated. Subsequently, the combustion gas is supplied to the inner smoke vent 5
The inner water pipe 3 and the outer water pipe 4 heat the surfaces of the inner water pipe 3 and the outer water pipe 4 while flowing into the combustion gas passage 7 from the lower part to the upper part. At this time, the combustion gas mainly flows through the combustion gas main flow portion 14, and the combustion gas flows into the portion between the front and rear heat absorption fins 11 in the heat absorption fin row provided on the left and right of the combustion gas main flow portion 14. be introduced. The combustion gas introduced from the combustion gas main flow portion 14 to the portion between the heat absorbing fins 11 flows in the lateral direction, and the space between the heat absorbing fins 11 may obstruct the formation of a vortex. Since there is no vortex, a vortex is formed in the lateral direction. Therefore, the combustion gas comes into contact with the upper and lower surfaces of the heat absorbing fins 11 and the water pipe heat transfer surface 15 at a portion between the heat absorption fins 11, and the heat absorption fin 11 and the water pipe heat transfer surface 15 transfer heat of the combustion gas. A large amount can be absorbed, and the heat absorption amount of the outer water pipe 4 can be increased. In the case where the combustion gas main flow portion 14 is provided to form a vortex in the lateral direction between the heat absorbing fins 11 as described above, a large number of heat absorbing fins can be provided, so that the heat absorption amount is very small. More. The flue gas whose temperature has been reduced by heating the water pipe is discharged to the outside smoke outlet 6,
Discharged through the flue 12.
【0009】なお、熱吸収用フィン列は図5に記載のよ
うに熱吸収用フィン11を隣の熱吸収用フィン列と同一
ピッチで半ピッチずらすようにしても良い。
In the heat absorbing fin row, the heat absorbing fins 11 may be shifted by a half pitch at the same pitch as the adjacent heat absorbing fin row as shown in FIG.
【0010】[0010]
【発明の効果】本発明を実施することにより、水管への
熱の吸収量を増大させることができるようになる。
According to the present invention, the amount of heat absorbed by the water pipe can be increased.
【図面の簡単な説明】[Brief description of the drawings]
【図1】 本発明での外側水管の一部分を抜き出した熱
吸収用フィンの斜視図
FIG. 1 is a perspective view of a heat absorbing fin obtained by extracting a part of an outer water pipe according to the present invention.
【図2】 他の実施例での外側水管の一部分を抜き出し
た熱吸収用フィンの斜視図
FIG. 2 is a perspective view of a heat absorbing fin in which a part of an outer water pipe is extracted in another embodiment.
【図3】 本発明の一実施例を示した縦断面図FIG. 3 is a longitudinal sectional view showing one embodiment of the present invention.
【図4】 図3のA−A断面図FIG. 4 is a sectional view taken along line AA of FIG. 3;
【図5】 図4の一部拡大図FIG. 5 is a partially enlarged view of FIG. 4;
【図6】 従来の熱吸収用フィンの場合の燃焼ガスの流
れの説明図
FIG. 6 is an explanatory view of a flow of a combustion gas in the case of a conventional heat absorbing fin.
【図7】 従来の熱吸収用フィンの場合の燃焼ガスの流
れの説明図
FIG. 7 is an explanatory view of a flow of a combustion gas in the case of a conventional heat absorbing fin.
【符号の説明】[Explanation of symbols]
3 内側水管 4 外側水管 5 内側通煙口 6 外側通煙口 7 燃焼ガス通路 8 閉塞用フィン 9 燃焼室 11 熱吸収用フィン 12 煙道 14 燃焼ガス主流動部 15 水管伝熱面 Reference Signs List 3 inner water pipe 4 outer water pipe 5 inner smoke port 6 outer smoke port 7 combustion gas passage 8 blockage fin 9 combustion chamber 11 heat absorption fin 12 flue 14 combustion gas main flow section 15 water pipe heat transfer surface

Claims (2)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 平行に設けた複数の水管と該水管の間を
    閉塞する閉塞用フィンからなる水管壁を2面形成し、2
    面の水管壁で挟まれた部分を燃焼ガス通路としておき、
    燃焼ガス通路に前記水管の水管軸に対して平行に燃焼ガ
    スを流動させて熱を吸収するボイラにおいて、水管の燃
    焼ガス通路に面している部分に水管軸とは垂直で燃焼ガ
    ス流に対して交差する向きに扇紙の形の熱吸収用フィン
    を多数段設ることで形成した熱吸収用フィン列を2列以
    上平行に設け、平行な熱吸収用フィン列の間に熱吸収用
    フィンの無い燃焼ガス主流動部を設けたことを特徴とす
    る燃焼ガス流に対し交差する熱吸収用フィンを設けたボ
    イラ。
    1. A water pipe wall comprising a plurality of water pipes provided in parallel and a closing fin for closing between the water pipes, and two water pipe walls are formed.
    The part of the surface between the water pipe walls is used as a combustion gas passage,
    In a boiler that absorbs heat by flowing a combustion gas in a combustion gas passage parallel to a water pipe axis of the water pipe, a portion of the water pipe facing the combustion gas passage is perpendicular to the water pipe axis and is directed to the combustion gas flow. At least two rows of heat absorbing fins formed by arranging a large number of fan-shaped heat absorbing fins in the direction crossing each other are provided in parallel with each other, and the heat absorbing fins are arranged between the parallel heat absorbing fin rows. A boiler provided with heat absorbing fins intersecting the combustion gas flow, wherein a combustion gas main flow portion having no flow is provided.
  2. 【請求項2】 請求項1に記載の燃焼ガス流に対し交差
    する熱吸収用フィンを持ったボイラにおいて、熱吸収用
    フィン列の熱吸収用フィンを隣の熱吸収用フィン列と同
    一ピッチで半ピッチずらせて設けたことを特徴とする燃
    焼ガス流に対し交差する熱吸収用フィンを設けたボイ
    ラ。
    2. A boiler having heat absorbing fins crossing the combustion gas flow according to claim 1, wherein the heat absorbing fins of the heat absorbing fin row are arranged at the same pitch as the adjacent heat absorbing fin row. A boiler provided with heat absorbing fins crossing a combustion gas flow, wherein the heat absorbing fins intersect with a combustion gas flow.
JP19926897A 1997-07-08 1997-07-08 Boiler having fin for heat absorption crossing combustion gas flow Pending JPH1130401A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19926897A JPH1130401A (en) 1997-07-08 1997-07-08 Boiler having fin for heat absorption crossing combustion gas flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19926897A JPH1130401A (en) 1997-07-08 1997-07-08 Boiler having fin for heat absorption crossing combustion gas flow

Publications (1)

Publication Number Publication Date
JPH1130401A true JPH1130401A (en) 1999-02-02

Family

ID=16404969

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19926897A Pending JPH1130401A (en) 1997-07-08 1997-07-08 Boiler having fin for heat absorption crossing combustion gas flow

Country Status (1)

Country Link
JP (1) JPH1130401A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007163006A (en) * 2005-12-13 2007-06-28 Samson Co Ltd Boiler with fin for heat absorption
JP2013057501A (en) * 2006-11-30 2013-03-28 Miura Co Ltd Boiler
KR101456903B1 (en) * 2007-04-20 2014-10-31 미우라고교 가부시키카이샤 Boiler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007163006A (en) * 2005-12-13 2007-06-28 Samson Co Ltd Boiler with fin for heat absorption
JP2013057501A (en) * 2006-11-30 2013-03-28 Miura Co Ltd Boiler
KR101456903B1 (en) * 2007-04-20 2014-10-31 미우라고교 가부시키카이샤 Boiler

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