JPH083885Y2 - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JPH083885Y2 JPH083885Y2 JP1251092U JP1251092U JPH083885Y2 JP H083885 Y2 JPH083885 Y2 JP H083885Y2 JP 1251092 U JP1251092 U JP 1251092U JP 1251092 U JP1251092 U JP 1251092U JP H083885 Y2 JPH083885 Y2 JP H083885Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- absorbing
- heat exchanger
- rising portion
- tube
- 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.)
- Expired - Lifetime
Links
Landscapes
- Details Of Fluid Heaters (AREA)
Description
【０００１】[0001]
【産業上の利用分野】給湯器に配設される多数の吸熱フ
ィンが吸熱管を挿通して、一定間隔を保って並列された
フィンアンドチューブ型熱交換器において、吸熱フィン
の通孔の間隔保持用の立上げ部の形状とその配置に関す
るものである。[Field of Industrial Application] In a fin-and-tube type heat exchanger in which a large number of heat-absorbing fins arranged in a water heater are inserted through a heat-absorbing tube and are arranged in parallel at regular intervals, the distance between the holes of the heat-absorbing fins. The present invention relates to the shape of a rising portion for holding and its arrangement.
【０００２】[0002]
【従来の技術】従来の熱交換器について図４に基づいて
以下に説明する。熱交換器の吸熱フィン１０は間隔保持
筒（立上げ部）１２０の最大高さ寸法ｔ０を保って平行
に並べられて給水管２０を挿通させており、かつ間隔保
持筒１２０は先端面が寸法ｔ０より順次低くなる傾斜状
に切除された欠如部１３０を有するものが実公平３ー５
０３６８（実開昭６２ー８５７８）にて示されており、
その間隔保持筒（立上げ部）１２０の先端周縁の最大高
さ部分（高さ寸法ｔ０部分）を下にして図示しないガス
バーナに対峙させた状態で吸熱フィン（吸熱管を含
む。）は取付けられている。2. Description of the Related Art A conventional heat exchanger will be described below with reference to FIG. The heat-absorbing fins 10 of the heat exchanger are arranged in parallel while maintaining the maximum height dimension t0 of the spacing tube (starting portion) 120 to allow the water supply pipe 20 to pass therethrough, and the spacing tube 120 has a dimension at the tip surface. It is fair to say that the one with the cutout portion 130 that is cut off in an inclined shape that becomes lower than t0 is actually fair 3-5.
0368 (Shokai Sho 62-8578),
The heat-absorbing fins (including the heat-absorbing tubes) are attached in a state of facing the gas burner (not shown) with the maximum height portion (height dimension t0 portion) of the tip end periphery of the interval holding cylinder (starting portion) 120 facing down. ing.
【０００３】上記の構成の熱交換器によれば、吸熱フィ
ンと吸熱管を密着させるための溶融ろう材は全周に良好
に流れるものの、燃焼ガスの上流側半周部において、間
隔保持筒１２０が欠如している。そして燃焼ガスに加熱
されるこの種熱交換器では、給水管が燃焼ガスの上流側
で高温であり、下流側でやや低い温度の雰囲気に晒され
て燃焼ガスの上流側と下流側との熱膨張の差により生じ
る応力を受ける。従って上記熱交換器の吸熱管２０は間
隔保持筒１２０の欠如部１３０である吸熱管２０の露出
部が薄肉部分であるため、該部に応力集中が発生して吸
熱管２０に熱応力集中による亀裂（以下本文においてこ
れを亀裂と言う。）が発生することが避け難い欠点があ
る。According to the heat exchanger having the above-described structure, the molten brazing material for closely contacting the heat absorbing fins with the heat absorbing tube flows well over the entire circumference, but the spacing cylinder 120 is formed in the upstream half circumference of the combustion gas. Is missing. In this type of heat exchanger that is heated by the combustion gas, the water supply pipe has a high temperature on the upstream side of the combustion gas and is exposed to an atmosphere of a slightly lower temperature on the downstream side, so that the heat of the combustion gas between the upstream side and the downstream side of the combustion gas is increased. It receives stress caused by the difference in expansion. Therefore, in the endothermic tube 20 of the heat exchanger, the exposed portion of the endothermic tube 20 which is the absent portion 130 of the spacing tube 120 is a thin portion, so that stress concentration occurs in the exposed portion and the thermal stress concentration is caused in the endothermic tube 20. There is a drawback that it is unavoidable that cracks (hereinafter referred to as cracks in the text) occur.
【０００４】[0004]
【考案が解決しようとする課題】そこで上記の従来の熱
交換器における応力集中をなくして吸熱管の亀裂を防止
し、且つ吸熱フィンと吸熱管の良好なろう付け性を確保
せんとするものである。Therefore, the stress concentration in the above-mentioned conventional heat exchanger is eliminated to prevent cracking of the heat absorbing tube and to secure good brazing property between the heat absorbing fin and the heat absorbing tube. is there.
【０００５】[0005]
【課題を解決するための手段】そこで上記バーナに近い
略半周部付近の吸熱管の大きな露出部をなくすべく、本
考案において、吸熱フィン１に穿たれた通孔１１の周囲
に立上げ部１２が形成されており、該立上げ部１２の高
さ寸法ｔ分の間隔を保って吸熱フィン１、１、…が平行
に重ねられた状態で吸熱管２を挿通させてろう付けされ
る熱交換器において、立上げ部１２の略半周部に略一定
の深さｍをもつ切り欠き１３を形成してなり、該切り欠
き部１３を燃焼ガスの後流側に位置させることを要旨と
するものである。Therefore, in order to eliminate a large exposed portion of the heat absorbing tube in the vicinity of a substantially half peripheral portion near the burner, in the present invention, a rising portion 12 is provided around the through hole 11 formed in the heat absorbing fin 1. Are formed, and the heat exchanging fins 1, 1, ... In the vessel, a notch 13 having a substantially constant depth m is formed in a substantially half circumference of the rising portion 12, and the notch 13 is positioned on the downstream side of the combustion gas. Is.
【０００６】[0006]
【作用】吸熱フィン１の通孔１１の立上げ部１２の燃焼
ガス流の上流側の半周部において、吸熱管２は立上げ部
１２に完全に覆われて強度が増加し、且つ応力集中が発
生する露出部が存在しないので亀裂が生じることはな
く、耐久性の向上が計ることができる。The heat absorbing tube 2 is completely covered by the rising portion 12 in the half circumferential portion of the rising portion 12 of the through hole 11 of the heat absorbing fin 1 on the upstream side of the combustion gas flow, so that the strength is increased and the stress concentration is reduced. Since there is no exposed portion to be generated, cracking does not occur and durability can be improved.
【０００７】[0007]
【実施例】以下本考案の実施例を図１に基づいて説明す
る。吸熱フィン１に吸熱管２を挿通する通孔１１を穿つ
とともに、その周面に立ち上げ寸法がｔである立上げ部
１２が形成されていて、同じ向きに並べられた吸熱フィ
ン１が吸熱管２を挿通させる。両端より吸熱フィン１、
１、…を押さえ付け密着させた状態で後記のろう材棒３
にて吸熱フィン１と吸熱管２とのろう付けが行なわれ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. The heat-absorbing fins 1 are formed with through holes 11 for inserting the heat-absorbing tubes 2, and a rising portion 12 having a rising dimension t is formed on the peripheral surface of the heat-absorbing fins 1 arranged in the same direction. Insert 2. Heat absorbing fin 1 from both ends
Brazing rod 3 to be described later in a state in which 1, ...
The heat absorbing fins 1 and the heat absorbing tubes 2 are brazed together.
【０００８】立上げ部１２の上半周部に軸方向一定寸法
ｍ（図２において略中間部まで）の直角に切り欠かれた
切り欠き１３が形成されている。そして切り欠き１３を
上方に位置させてフィン１に挿通したろう材棒３を溶融
させて上方より溶融ろうを流してろう付けを行なうもの
である。溶融ろうは切り欠き１３の下面部で受け止めら
れて立上げ部１２の上側半周面及び下側半周面と吸熱管
２との間に流れ込んでろう付けが行なわれる。そして熱
交換器の下方に図示しないバーナを設置するものであ
る。A notch 13 is formed in the upper half of the rising portion 12 at a right angle with a constant axial dimension m (up to approximately the middle portion in FIG. 2). Then, the notch 13 is located above and the brazing rod 3 inserted into the fin 1 is melted, and the molten brazing is flowed from above to perform brazing. The molten braze is received by the lower surface of the notch 13 and flows between the upper half peripheral surface and the lower half peripheral surface of the rising portion 12 and the heat absorbing tube 2 for brazing. Then, a burner (not shown) is installed below the heat exchanger.
【０００９】而して吸熱管２の下側半周は完全にフィン
１の立上げ部１２に覆われており、上側半周は先端部が
一部切除された立上げ部１２にて覆われている。それ
故、吸熱管２の下側半周部が全長に亘って立上げ部１２
にて一体的に補強され、且つ応力集中が発生する段差部
がないので、下側に設置されたバーナの燃焼ガス流（矢
線ａにて示す。）より生じる熱応力により吸熱管２に亀
裂が発生することはないものである。そしてろう付け時
において溶融ろうが切り欠き１３にて受け止められるの
で下側半周部は勿論、上側半周部のろうの廻りが確実に
均一に行なわれる。Thus, the lower half circumference of the endothermic tube 2 is completely covered by the rising portion 12 of the fin 1, and the upper half circumference is covered by the rising portion 12 whose tip is partially cut off. . Therefore, the lower half circumference of the heat absorbing tube 2 extends over the entire length of the rising portion 12
Since there is no stepped portion that is integrally reinforced with and the stress concentration occurs, the endothermic tube 2 is cracked by the thermal stress generated by the combustion gas flow (indicated by the arrow a) of the burner installed on the lower side. Is something that will never happen. Since the molten brazing material is received by the notch 13 during brazing, not only the lower half peripheral portion but also the upper half peripheral portion is reliably and uniformly turned around the brazing filler metal.
【００１０】[0010]
【考案の効果】以上述べたように、本考案の熱交換器に
よれば、燃焼ガスの上流側である下側半周部で吸熱管が
フィンの立上げ部にて完全に覆われており、立上げ部に
て吸熱管が増強されるので、耐久性の増大が計ることが
できる。又、ろう付け時の溶融ろうが中間付近で受け止
められるので燃焼ガスの下流側である上側半周部のろう
付けも遜色なく確実に行なわれる効果がある。As described above, according to the heat exchanger of the present invention, the heat absorption tube is completely covered by the fin rising portion at the lower half circumference which is the upstream side of the combustion gas, Since the endothermic tube is reinforced at the rising portion, the durability can be increased. Further, since the molten brazing material during brazing is received in the vicinity of the middle, there is an effect that brazing of the upper half peripheral portion, which is the downstream side of the combustion gas, can be performed without any problem.
【図１】本考案の一実施例を示す概略正面図である。FIG. 1 is a schematic front view showing an embodiment of the present invention.
【図２】図１における要部を示す拡大縦断面図である。FIG. 2 is an enlarged longitudinal sectional view showing a main part in FIG.
【図３】同じく図１における要部を示す拡大横断面図で
ある。FIG. 3 is an enlarged cross-sectional view showing a main part of FIG.
【図４】従来の実施例を示す概略正面図である。FIG. 4 is a schematic front view showing a conventional embodiment.
１ 吸熱フィン ２ 吸熱管 １１ 通孔 １２ 立上げ部 １３ 切り欠き 1 Endothermic Fins 2 Endothermic Tubes 11 Through Holes 12 Rise Parts 13 Notches
Claims (1)
に立上げ部１２が形成されており、該立上げ部１２の高
さ寸法ｔ分の間隔を保って吸熱フィン１、１、…が平行
に重ねされた状態で吸熱管２を挿通させてろう付けされ
る熱交換器において、立上げ部１２の略半周部に略一定
の深さｍをもつ切り欠き１３が形成されてなり、且つ該
切り欠き１３を燃焼ガスの後流側に位置させたことを特
徴とする熱交換器。1. A rising portion 12 is formed around a through hole 11 formed in the heat-absorbing fin 1, and the heat-absorbing fins 1, 1, 1 are spaced apart by a height dimension t of the rising portion 12. In a heat exchanger that is brazed by inserting the heat absorbing tubes 2 in a state of being stacked in parallel with each other, a cutout 13 having a substantially constant depth m is formed in a substantially half circumferential portion of the rising portion 12. A heat exchanger characterized in that the notch 13 is located on the downstream side of the combustion gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1251092U JPH083885Y2 (en) | 1992-02-04 | 1992-02-04 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1251092U JPH083885Y2 (en) | 1992-02-04 | 1992-02-04 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0566466U JPH0566466U (en) | 1993-09-03 |
| JPH083885Y2 true JPH083885Y2 (en) | 1996-01-31 |
Family
ID=11807348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1251092U Expired - Lifetime JPH083885Y2 (en) | 1992-02-04 | 1992-02-04 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH083885Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6805055B2 (en) * | 2017-04-05 | 2020-12-23 | リンナイ株式会社 | Fin tube heat exchanger |
-
1992
- 1992-02-04 JP JP1251092U patent/JPH083885Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0566466U (en) | 1993-09-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |