JP2017207259A - Water heater - Google Patents

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JP2017207259A
JP2017207259A JP2016101390A JP2016101390A JP2017207259A JP 2017207259 A JP2017207259 A JP 2017207259A JP 2016101390 A JP2016101390 A JP 2016101390A JP 2016101390 A JP2016101390 A JP 2016101390A JP 2017207259 A JP2017207259 A JP 2017207259A
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drum
wall
fin
pipe
hot air
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JP6633452B2 (en
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成樹 村山
Shigeki Murayama
成樹 村山
高志 内山
Takashi Uchiyama
高志 内山
竹年 田村
Taketoshi Tamura
竹年 田村
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Corona Corp
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Corona Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a water heater capable of preventing overheat of a drum and improving heat exchange efficiency.SOLUTION: A plate is folded to form a square cylindrical drum 1. Inside an upper part of the drum 1, a fin pipe 4 with a plurality of fins 5 fastened to its outer periphery is installed in a penetrated manner, and at a lower part of the drum 1, a peripheral pipe 6 communicating with the fin pipe 4 is wounded and fastened with brazing. Between the lower part of the fin pipe 4 and an inner wall of the drum 1, a heat insulation material 7 is provided. Further, on the inner wall of the drum 1 at a lower end of the heat insulation material 7, included is guide means 8 of guiding to a center of the drum 1, hot air rising along the inner wall of the drum 1 from a lower combustion burner 2.SELECTED DRAWING: Figure 2

Description

この発明はドラムの耐熱性向上と熱効率の向上の両方を達成した給湯装置に関するものである。   The present invention relates to a hot water supply apparatus that achieves both improved heat resistance and improved thermal efficiency of a drum.

従来よりこの種のものでは、角筒状のドラムの上部内方にはフィンパイプを貫通設置すると共に、ドラム下部には前記フィンパイプに連通する周パイプを巻回しろう付け固着して、ドラムの下方には燃焼バーナを備え、この燃焼バーナの燃焼による熱気で、パイプ内を流通する給水を加熱して、適宜給湯として供給するものであった。(例えば、特許文献1参照)   Conventionally, in this type, a fin pipe is installed through the upper part of a square cylindrical drum, and a peripheral pipe connected to the fin pipe is wound and fixed to the lower part of the drum by brazing. A combustion burner is provided below, and the hot water generated by the combustion of the combustion burner is used to heat the feed water flowing through the pipe and supply it as hot water as appropriate. (For example, see Patent Document 1)

特開平9−292161号公報JP-A-9-292161

ところでこの従来のものでは、ドラム内の下方に位置する燃焼バーナの燃焼が、どうしても外側に広がろうとする火炎となるため、熱気はドラム内壁に沿って上昇するので、ドラムが加熱されて温度が上昇するが、ドラム下部は元々周パイプが巻回されて冷却されており問題はないが、ドラム上部のフィンパイプ部分の下端に熱気が集中し、特に熱気が集中する下部のフィンからの熱伝導でドラムが加熱されて焼損すると言う耐熱性の問題があり、又熱気がドラム内壁に沿って上昇する関係から、フィンパイプ部分でも熱気は中央部に寄らず熱交換効率が悪いと言う課題を有するものであった。   By the way, in this conventional type, the combustion of the combustion burner located in the lower part of the drum inevitably becomes a flame that spreads outward, so the hot air rises along the inner wall of the drum. Although the lower part of the drum is naturally cooled by the surrounding pipe wound around it, hot air is concentrated at the lower end of the fin pipe part at the upper part of the drum, and heat conduction from the lower fins where hot air is concentrated. There is a problem of heat resistance that the drum is heated and burned out, and since the hot air rises along the inner wall of the drum, there is a problem that the heat exchange efficiency is poor even in the fin pipe part because the hot air does not approach the center part. It was a thing.

この発明はこの点に着目し上記課題を解決する為、特にその構成を、板材を折り曲げて角筒状のドラムを形成し、該ドラム上部内方には外周に複数枚のフィンを固着したフィンパイプを貫通設置すると共に、ドラム下部には前記フィンバイブに連通する周パイプを巻回しろう付け固着したものに於いて、前記フィンバイブ下部とドラム内壁との間には断熱材を設け、更にこの断熱材下端のドラム内壁には、該ドラム内壁に沿って上昇する下方の燃焼バーナからの熱気をドラム中央に案内する案内手段を備えたものである。   The present invention focuses on this point and solves the above-mentioned problems. In particular, the structure is formed by bending a plate material to form a rectangular tube-shaped drum, and a fin having a plurality of fins fixed to the outer periphery inside the drum. A pipe is pierced, and a peripheral pipe communicating with the fin vibe is wound and fixed to the lower part of the drum by brazing. A heat insulating material is provided between the lower part of the fin vibe and the inner wall of the drum. The drum inner wall at the lower end of the heat insulating material is provided with guide means for guiding hot air from a lower combustion burner rising along the drum inner wall to the center of the drum.

又請求項2では、案内手段を、ドラム前後壁の内壁に形成された2つの案内突起から構成したものである。   According to a second aspect of the present invention, the guide means comprises two guide protrusions formed on the inner walls of the front and rear drum walls.

この発明によれば、断熱材によってフィンパイプ下部のフィンからの熱伝導でドラムが加熱されるのを阻止するので、ドラムが加熱されて焼損する心配がなく、耐熱性も向上し安心して使用出来るものであり、更に断熱材下端につながるドラム内壁には、該ドラム内壁に沿って上昇する下方の燃焼バーナからの熱気をドラム中央に案内する案内手段を備えたことで、断熱材に直接熱気が当たることによる焼損を防止すると共に、熱気がファンパイプ全体に広がり効率の良い熱交換が行われるものである。   According to this invention, since the drum is prevented from being heated by heat conduction from the fins at the lower part of the fin pipe by the heat insulating material, there is no fear of the drum being heated and burned out, and the heat resistance is improved and it can be used with confidence. Further, the inner wall of the drum connected to the lower end of the heat insulating material is provided with guide means for guiding the hot air from the lower combustion burner rising along the inner wall of the drum to the center of the drum, so that the heat is directly applied to the heat insulating material. While preventing burning by hitting, hot air spreads over the whole fan pipe, and efficient heat exchange is performed.

又請求項2のように、案内手段をドラム前後壁の内壁に形成された2つの案内突起から構成したことで、案内突起はドラムと一体成形されているので、安価で済むと共に強固であり、長期に渡って良好な作用を維持出来ると言う効果を有するものである。   Further, as in claim 2, the guide means is composed of two guide protrusions formed on the inner wall of the front and rear walls of the drum, so that the guide protrusion is formed integrally with the drum, so that it is inexpensive and strong, It has an effect that a good action can be maintained over a long period of time.

この発明の一実施形態を付した給湯装置の熱交換器の正面図。The front view of the heat exchanger of the hot water supply apparatus which attached | subjected one Embodiment of this invention. 図1のA−A線概略断面図。The AA line schematic sectional drawing of FIG.

次にこの発明の一実施形態を図面に基づいて説明する。
1は板金材を折り曲げて角筒状に形成したドラムで、給湯装置の熱交換器を構成するものであり、内部下方には燃焼バーナ2が上向きに備えられ、内方は下方から上方に熱気が通過する燃焼室3を形成するものである。
Next, an embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a drum formed by bending a sheet metal material into a rectangular tube shape, which constitutes a heat exchanger of a hot water supply apparatus. Forms a combustion chamber 3 through which the gas passes.

4は絞り加工によって細くされたドラム1上部内方に備えられたフィンパイプで、外周には複数枚のフィン5が固着されドラム1を貫通して設置され、燃焼バーナ2の燃焼で発生する熱気との熱交換を積極的に行うものである。   Reference numeral 4 denotes a fin pipe provided inside the upper portion of the drum 1 that has been thinned by drawing, and a plurality of fins 5 are fixed to the outer periphery of the fin pipe and are installed through the drum 1 to generate hot air generated by the combustion of the combustion burner 2. The heat exchange with is actively performed.

6はドラム1下部外周に巻回された周パイプで、上端を前記フィンパイプ4と連通すると共に下端を市水に連通して、内方に給水を流通させてドラム1外周を冷却しながら加熱されるもので、冷却効果を高めるためにドラム1とはろう付けで固着されている。   6 is a peripheral pipe wound around the lower outer periphery of the drum 1. The upper end communicates with the fin pipe 4, the lower end communicates with city water, and water is supplied inward to heat the outer periphery of the drum 1 while cooling it. In order to enhance the cooling effect, the drum 1 is fixed by brazing.

7は前記フィンパイプ4下部のフィン5とドラム1の前後壁との間に設けられた帯状の断熱材で、熱気が集中するフィン5下部からの熱伝導で、ドラム1の前後壁上部の加熱による焼損を防止するものである。   7 is a strip-shaped heat insulating material provided between the fin 5 at the lower part of the fin pipe 4 and the front and rear walls of the drum 1, and heat conduction from the lower part of the fin 5 where hot air is concentrated. This prevents burnout.

8は前記断熱材7下端のドラム1前後壁に備えられた案内手段で、ドラム1前後壁に内方に突出するように一体成形で成形された2つの案内突起9から構成され、該ドラム1内壁に沿って上昇する下方の燃焼バーナ2からの熱気をドラム1中央に案内すると共に、断熱材7下端が直接熱気にさらされることによる焼損も防止するものであり、断熱材7と案内手段8との相乗効果によりドラム1の過熱防止と熱交換器効率の向上を図ることが出来るものである。   Reference numeral 8 denotes guide means provided on the front and rear walls of the drum 1 at the lower end of the heat insulating material 7, and is composed of two guide protrusions 9 that are integrally formed so as to protrude inwardly from the front and rear walls of the drum 1. In addition to guiding the hot air from the lower combustion burner 2 rising along the inner wall to the center of the drum 1, the heat insulating material 7 and the guiding means 8 are also prevented from being burned by the lower end of the heat insulating material 7 being directly exposed to the hot air. Thus, it is possible to prevent overheating of the drum 1 and improve the efficiency of the heat exchanger.

10はドラム1上端の上フランジ、11はドラム1下端の下フランジである。   Reference numeral 10 denotes an upper flange on the upper end of the drum 1, and 11 denotes a lower flange on the lower end of the drum 1.

次にこの一実施形態の作用について説明すれば、今給湯栓(図示せず)を開栓してフィンパイプ4及び周パイプ6内に給水の流れが発生することで、燃焼バーナ2が燃焼を開始するものである。   Next, the operation of this embodiment will be described. The hot water tap (not shown) is now opened, and the flow of feed water is generated in the fin pipe 4 and the peripheral pipe 6 so that the combustion burner 2 burns. It is what is started.

そしてこの燃焼バーナ2の燃焼で発生した熱気は、ドラム1内壁に沿って上昇してドラム1下部を加熱するが、このドラム1下部には周パイプ6が巻回されているので、該周パイプ6内を流れる給水により冷却されると共に、給水は加熱されて温水となってフィンパイプ4内に流入する。   The hot air generated by the combustion of the combustion burner 2 rises along the inner wall of the drum 1 and heats the lower part of the drum 1, and the peripheral pipe 6 is wound around the lower part of the drum 1. The feed water is cooled by the feed water flowing through the inside 6, and the feed water is heated to become hot water and flows into the fin pipe 4.

次にドラム1下部からの熱気は、ドラム1上部のフィンパイプ4部分に流れ込むが、特に熱気が最初に流れ込み集中するフィンパイプ4下部のフィン5とドラム1内壁との間には、断熱材7が備えられて熱伝導が遮断されることで、ドラム1内壁が過熱されて焼損する心配がなく、逆にこの遮断された熱はフィンパイプ4内を流通する温水に付加されることとなり、熱交換効率も向上するものであ。   Next, the hot air from the lower part of the drum 1 flows into the fin pipe 4 part at the upper part of the drum 1, and in particular, between the fin 5 at the lower part of the fin pipe 4 where the hot air first flows and concentrates and the inner wall of the drum 1, the heat insulating material 7. And the heat conduction is cut off so that the inner wall of the drum 1 is not overheated and burned out. On the contrary, the cut off heat is added to the hot water flowing through the fin pipe 4, and the heat Exchange efficiency is also improved.

更にドラム1下部の内壁に沿って上昇して来る熱気は、断熱材7下端の案内手段8によってドラム1中央に案内されると共に、断熱材7下端が直接熱気にさらされることによる焼損も防止するものであり、断熱材7と案内手段8との相乗効果によりドラム1の過熱防止と、熱気が中央に拡散されることにより熱交換器効率の向上を図ることが出来るものである。   Further, the hot air rising along the inner wall of the lower part of the drum 1 is guided to the center of the drum 1 by the guide means 8 at the lower end of the heat insulating material 7 and also prevents burning due to the lower end of the heat insulating material 7 being directly exposed to the hot air. Thus, the drum 1 is prevented from being overheated by the synergistic effect of the heat insulating material 7 and the guide means 8, and the heat exchanger efficiency can be improved by diffusing hot air in the center.

又前記案内手段8をドラム1前後壁の内壁に形成された2つの案内突起9から構成したことで、案内突起9はドラム1と一体成形されているので、安価で済むと共に強固であり、長期に渡って良好な作用を維持出来るものである。   Further, since the guide means 8 is composed of the two guide protrusions 9 formed on the inner walls of the front and rear walls of the drum 1, the guide protrusion 9 is integrally formed with the drum 1, so that it is inexpensive and strong, and is long-lasting. It is possible to maintain a good action over the range.

1 ドラム
4 フィンパイプ
5 フィン
6 周パイプ
7 断熱材
8 案内手段
DESCRIPTION OF SYMBOLS 1 Drum 4 Fin pipe 5 Fin 6 Circumferential pipe 7 Heat insulating material 8 Guide means

Claims (2)

板材を折り曲げて角筒状のドラムを形成し、該ドラム上部内方には外周に複数枚のフィンを固着したフィンパイプを貫通設置すると共に、ドラム下部には前記フィンバイブに連通する周パイプを巻回しろう付け固着したものに於いて、前記フィンバイブ下部とドラム内壁との間には断熱材を設け、更にこの断熱材下端のドラム内壁には、該ドラム内壁に沿って上昇する下方の燃焼バーナからの熱気をドラム中央に案内する案内手段を備えた事を特徴とする給湯装置。   A plate-like drum is formed by bending a plate material, and a fin pipe having a plurality of fins fixed to the outer periphery is installed through the inside of the drum upper part, and a peripheral pipe communicating with the fin vibe is provided at the lower part of the drum. In the case of winding and brazing, a heat insulating material is provided between the fin vibe lower portion and the drum inner wall, and further, a lower combustion rising along the drum inner wall is provided on the drum inner wall at the lower end of the heat insulating material. A hot water supply apparatus comprising guide means for guiding hot air from a burner to the center of the drum. 前記案内手段は、ドラム前後壁の内壁に形成された2つの案内突起から構成される事を特徴とする請求項1記載の給湯装置。   The hot water supply apparatus according to claim 1, wherein the guide means comprises two guide protrusions formed on the inner walls of the front and rear walls of the drum.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6066989U (en) * 1983-10-14 1985-05-13 三洋電機株式会社 Heat exchanger for water heater
JPH0519857U (en) * 1991-08-23 1993-03-12 パロマ工業株式会社 Heat exchanger
JPH07253281A (en) * 1994-03-16 1995-10-03 Matsushita Electric Ind Co Ltd Heat exchanger
JPH09292161A (en) * 1996-04-25 1997-11-11 Corona Corp Heat exchanger of hot water supply apparatus
JP2000314561A (en) * 1999-04-28 2000-11-14 Toto Ltd Heat exchanger
JP2001336887A (en) * 2000-05-30 2001-12-07 Noritz Corp Heat exchanger
JP2002013825A (en) * 2000-06-27 2002-01-18 Noritz Corp Assembly structure of heat exchanger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6066989U (en) * 1983-10-14 1985-05-13 三洋電機株式会社 Heat exchanger for water heater
JPH0519857U (en) * 1991-08-23 1993-03-12 パロマ工業株式会社 Heat exchanger
JPH07253281A (en) * 1994-03-16 1995-10-03 Matsushita Electric Ind Co Ltd Heat exchanger
JPH09292161A (en) * 1996-04-25 1997-11-11 Corona Corp Heat exchanger of hot water supply apparatus
JP2000314561A (en) * 1999-04-28 2000-11-14 Toto Ltd Heat exchanger
JP2001336887A (en) * 2000-05-30 2001-12-07 Noritz Corp Heat exchanger
JP2002013825A (en) * 2000-06-27 2002-01-18 Noritz Corp Assembly structure of heat exchanger

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