JPH0612229B2 - Tube junction of heat exchanger - Google Patents
Tube junction of heat exchangerInfo
- Publication number
- JPH0612229B2 JPH0612229B2 JP61178426A JP17842686A JPH0612229B2 JP H0612229 B2 JPH0612229 B2 JP H0612229B2 JP 61178426 A JP61178426 A JP 61178426A JP 17842686 A JP17842686 A JP 17842686A JP H0612229 B2 JPH0612229 B2 JP H0612229B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- heat exchanger
- hole
- plate
- tube plate
- 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
- 230000037431 insertion Effects 0.000 claims description 19
- 238000003780 insertion Methods 0.000 claims description 19
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000005219 brazing Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
- F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、熱交換器のチューブプレートとチューブとの
接合部にかかり、特にその接合強度を強固にすると共に
接合部のシール性を確実に行うものに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a joint portion between a tube plate and a tube of a heat exchanger, and particularly strengthens the joint strength and ensures the sealability of the joint portion. Regarding what to do.
タンク７の底面を構成するチューブプレート１には複数
のチューブ挿通孔が穿設され、該挿通孔にチューブ３の
端部が夫々第９図の如く挿通されている。そして該挿通
部がろう材６により固定される。このようなろう付けは
一般にチューブ３の端部をチューブプレート１の孔に挿
通した状態で、チューブプレート１の内面側から両者の
挿通部をろう材溶融槽に浸漬する。そして該挿通部にろ
う材を浸透させてろう付けを行うものである。The tube plate 1 forming the bottom surface of the tank 7 is provided with a plurality of tube insertion holes, and the ends of the tubes 3 are inserted into the insertion holes as shown in FIG. Then, the insertion portion is fixed by the brazing material 6. In such brazing, generally, with the end portion of the tube 3 inserted into the hole of the tube plate 1, both insertion portions are immersed in the brazing material melting tank from the inner surface side of the tube plate 1. Then, the brazing material is permeated into the insertion portion for brazing.
ところが、高温の溶融したろう材にチューブ３の端部を
浸漬すると、その浸漬部の金属組織の結晶粒は粗大化
し、チューブ３の先端部分が軟化する。すると振動等に
よる外力がチューブ３に加わったり、チューブ３内を流
通する水に圧力が加えられると、その付け根部が第９図
の鎖線の如く変形することがある。However, when the end portion of the tube 3 is immersed in the molten brazing filler metal at a high temperature, the crystal grains of the metal structure of the immersed portion are coarsened and the tip portion of the tube 3 is softened. Then, when an external force due to vibration or the like is applied to the tube 3 or pressure is applied to the water flowing in the tube 3, the root portion thereof may be deformed as shown by the chain line in FIG.
そこで本発明は上記の問題点を解決するため次の構成を
とる。Therefore, the present invention has the following configuration in order to solve the above problems.
即ち、チューブプレート１に穿設された複数のチューブ
挿通孔２の孔縁部が夫々バーリング加工され、夫々のチ
ューブ挿通孔２にチューブ３の端部が液密にろう付け接
合される。ここにおいて本発明の特徴とするところはチ
ューブ３の肉厚をチューブプレート１のそれよりも薄く
し、チューブ３の端部外面に全長に渡ってほぼ同一幅の
突条４をそのチューブの軸方向に平行に曲折形成する。
そして突条４の一部が前記チューブプレートの挿通孔よ
りも充分外側まで突出するように、該チューブの長手方
向の中心側に向けて充分長く延在させたものである。That is, the hole edges of the tube insertion holes 2 formed in the tube plate 1 are burred, and the ends of the tubes 3 are liquid-tightly brazed to the respective tube insertion holes 2. Here, the feature of the present invention is that the thickness of the tube 3 is made thinner than that of the tube plate 1, and the ridges 4 of substantially the same width are provided on the outer surface of the end portion of the tube 3 in the axial direction of the tube. It is bent in parallel with.
Then, the projection 4 is made to extend sufficiently long toward the center side in the longitudinal direction of the tube so that a part of the projection 4 projects to the outside sufficiently beyond the insertion hole of the tube plate.
従って本チューブ接合部は、突条４の存在によりチュー
ブプレート１とチューブ３との接合強度を大きくし、信
頼性の高いチューブ接合部となる。Therefore, the present tube joint portion becomes a highly reliable tube joint portion by increasing the joint strength between the tube plate 1 and the tube 3 due to the presence of the protrusion 4.
次に、図面に基づいて本発明の実施例につき説明する。 Next, an embodiment of the present invention will be described with reference to the drawings.
第１図は本接合部の分解斜視略図であり、第２図はその
組立状態における斜視略図である。そして第３図ないし
第６図は本接合部の製造順序を順に示した説明図であ
る。この実施例では、第７図に示す如く上下のチューブ
プレート１，１に複数のチューブ３の両端部が夫々挿通
され、該挿通部がろう付け固定される。そして各チュー
ブ３，３間にコルゲート型又はプレート型のフィン９が
接触してろう付け固定される。そして各チューブプレー
ト１の周縁にはタンク７の裾部が嵌着し、該嵌着部がろ
う付け固定されるものである。この実施例ではチューブ
３は第１図及び第２図の如く偏平に形成されると共に、
その端部に複数の突条４がチューブ３の軸方向に平行に
曲折形成される。次にこのチューブ３の端部が挿通され
るチューブプレート１は、チューブ３の板厚よりも一般
に数倍以上厚く形成され、チューブ３の外周よりもわず
かに大きなチューブ挿通孔２が設けられ、該チューブ挿
通孔２の孔縁部が同図の如くチューブプレート１の内面
側にバーリング加工されている。なお、このチューブ挿
通孔２のバーリング加工の高さよりもチューブ３の突条
４は長く形成されている。そして第２図及び第３図に示
す如くチューブ３の端部をチューブプレート１のチュー
ブ挿通孔２に挿通する。次いで第４図に示す如く突条４
部分とチューブプレート１の孔縁部のみを抵抗溶接によ
り溶接し突条４の上部に溶接部５を形成する。従って溶
接部５の存在しない突条４以外の部分はチューブプレー
ト１とチューブ３表面との間に小隙が形成されている。
この隙間は、第５図の如くろう材溶融槽に浸漬したと
き、ろう材の気泡等を容易に逃がすための隙間を保持す
ると共に、ろう付け時の毛管作用を促す効果を有する。
そこで第５図に示す如く溶融したろう材６を有するハン
ダ槽10内にチューブプレート１の内面側を浸漬する。す
ると、チューブ３とチューブ挿通孔２との隙間からろう
材６が浸透し、該隙間を閉塞して液密にろう付け固定す
る。このようにして第６図に示す接合部を完成する。同
様にチューブ３の下端部についてもろう付け固定し、チ
ューブプレート１の周縁に形成された溝部８（第２図）
にタンク７の裾部を嵌着し、両者の間をろう付けすれば
第７図に示す熱交換器を完成する。このようにして完成
された熱交換器は、チューブ３の付け根部が溶接部５に
より接合強度の強いものとなると共に、ろう材６の存在
によりシール性の高いものとなる。又、チューブ３の付
け根部に形成された突条４の存在により外力に伴う変形
を防止できる。FIG. 1 is a schematic exploded perspective view of the main joint portion, and FIG. 2 is a schematic perspective view in the assembled state. 3 to 6 are explanatory views sequentially showing the manufacturing sequence of the main joint portion. In this embodiment, as shown in FIG. 7, both ends of a plurality of tubes 3 are inserted into the upper and lower tube plates 1 and 1, respectively, and the inserted portions are fixed by brazing. Then, a corrugated or plate type fin 9 is brought into contact between the tubes 3 and 3 and fixed by brazing. The hem of the tank 7 is fitted to the peripheral edge of each tube plate 1, and the fitted portion is brazed and fixed. In this embodiment, the tube 3 is formed flat as shown in FIGS. 1 and 2, and
A plurality of ridges 4 are bent and formed in the end portion in parallel to the axial direction of the tube 3. Next, the tube plate 1 into which the end of the tube 3 is inserted is generally formed to be several times thicker than the plate thickness of the tube 3, and a tube insertion hole 2 slightly larger than the outer circumference of the tube 3 is provided. The hole edge of the tube insertion hole 2 is burred on the inner surface side of the tube plate 1 as shown in FIG. The ridge 4 of the tube 3 is formed longer than the burring height of the tube insertion hole 2. Then, as shown in FIGS. 2 and 3, the end portion of the tube 3 is inserted into the tube insertion hole 2 of the tube plate 1. Then, as shown in FIG.
Only the portion and the hole edge portion of the tube plate 1 are welded by resistance welding to form the welded portion 5 on the upper portion of the ridge 4. Therefore, a small gap is formed between the tube plate 1 and the surface of the tube 3 except for the protrusion 4 where the welded portion 5 does not exist.
This gap has the effect of holding a gap for allowing bubbles of the brazing material to easily escape when immersed in the brazing material melting tank as shown in FIG. 5, and having an effect of promoting a capillary action during brazing.
Therefore, as shown in FIG. 5, the inner surface side of the tube plate 1 is immersed in a solder bath 10 having a molten brazing material 6. Then, the brazing filler metal 6 permeates through the gap between the tube 3 and the tube insertion hole 2 to close the gap and braze and fix it in a liquid-tight manner. In this way, the joint shown in FIG. 6 is completed. Similarly, the lower end portion of the tube 3 is also brazed and fixed, and the groove portion 8 formed in the peripheral edge of the tube plate 1 (FIG. 2).
The hem of the tank 7 is fitted to and the parts between them are brazed to complete the heat exchanger shown in FIG. In the heat exchanger thus completed, the base of the tube 3 has a strong joint strength due to the welded portion 5, and the presence of the brazing filler metal 6 provides a high sealing property. In addition, the presence of the ridge 4 formed at the base of the tube 3 can prevent the deformation due to the external force.
なお、本発明は上記実施例に限定されるのもでは勿論な
く例えばチューブ３の突条４は第８図に示す如く波形状
に形成してもよい。それにより溶接部５の大きさを充分
確保できる。The present invention is not limited to the above-mentioned embodiment, but the protrusion 4 of the tube 3 may be formed in a corrugated shape as shown in FIG. Thereby, the size of the welded portion 5 can be sufficiently secured.
本発明の熱交換器のチューブ接合部は以上のような構成
からなり、次の効果を有する。The tube joint portion of the heat exchanger of the present invention has the above-mentioned configuration and has the following effects.
チューブ挿通孔２に挿通されるチューブプレート１の端
部外面にほぼ同一幅の突条４がその軸方向に曲折形成さ
れ、該突条４がチューブプレート１の挿通孔２よりも外
側に充分突出するようにしたから、チューブプレート１
とチューブ３とのろう付けに基づくチューブ付け根部の
材料劣化部を補強し、耐震性の強いチューブ接合部を提
供できる。すなわち、振動等によりチューブ３の軸方向
及び曲げ方向に外力が加えられても、突条４の存在によ
りチューブ３の付け根部が変形することを防止できる。On the outer surface of the end portion of the tube plate 1 which is inserted into the tube insertion hole 2, a ridge 4 having substantially the same width is bent and formed in the axial direction, and the ridge 4 projects sufficiently outward from the insertion hole 2 of the tube plate 1. Since it was done, the tube plate 1
It is possible to reinforce the material deterioration part of the tube root part based on the brazing of the tube 3 and the tube 3 and to provide the tube joint part having strong earthquake resistance. That is, even if an external force is applied in the axial direction and the bending direction of the tube 3 due to vibration or the like, it is possible to prevent the base portion of the tube 3 from being deformed due to the presence of the protrusion 4.
第１図は本発明のチューブ接合部の分解斜視略図、第２
図は同組立状態を示す斜視図であって第７図のII−II矢
視方向から見たもの、第３図ないし第６図は本接合部を
製造する順序を順に示したもの、第７図は本発明の熱交
換器の一実施例を示す立面図、第８図はチューブ３の端
部に形成される突条４の他の実施例を示す略図、第９図
は従来型チューブ接合部の縦断面説明図。 １……チューブプレート、２……チューブ挿通孔 ３……チューブ、４……突条 ５……溶接部、６……ろう材 ７……タンク、８……溝部 ９……フィン、10……ハンダ槽FIG. 1 is a schematic exploded perspective view of a tube joint portion of the present invention, FIG.
FIG. 7 is a perspective view showing the same assembled state as seen from the direction of arrows II-II in FIG. 7, and FIGS. 3 to 6 show the order of manufacturing the main joint in order, FIG. 8 is an elevational view showing an embodiment of the heat exchanger of the present invention, FIG. 8 is a schematic view showing another embodiment of the ridges 4 formed at the end of the tube 3, and FIG. 9 is a conventional tube. Explanatory drawing of a longitudinal section of a joint portion. 1 ... Tube plate, 2 ... Tube insertion hole 3 ... Tube, 4 ... Projection 5 ... Welded part, 6 ... Brazed material 7 ... Tank, 8 ... Groove 9 ... Fin, 10 ... Solder bath
Claims (2)
ューブ挿通孔２の孔縁部が夫々バーリング加工され、夫
々の前記挿通孔２にチューブ３の端部が液密にろう付け
接合される熱交換器のチューブ接合部において、前記チ
ューブ３の肉厚を前記チューブプレート１のそれよりも
薄くし、前記チューブ３の端部外面に全長に渡ってほぼ
同一幅の突条４を該チューブの軸方向に平行に曲折成形
し、該突条４の一部が前記チューブプレート１の挿通孔
２よりも充分外側にまで突出するように該チューブの長
手方向の中心側に向けて充分長く延在させたことを特徴
とする熱交換器のチューブ接合部。1. The edge portions of a plurality of tube insertion holes 2 formed in a tube plate 1 are burred, and the ends of the tubes 3 are liquid-tightly brazed to the respective insertion holes 2. In the tube joint portion of the heat exchanger, the wall thickness of the tube 3 is made thinner than that of the tube plate 1, and the ridges 4 of substantially the same width are provided on the outer surface of the end portion of the tube 3 over the entire length. It is bent and formed parallel to the axial direction, and extends long enough toward the center side in the longitudinal direction of the tube so that a part of the ridge 4 projects sufficiently outside the insertion hole 2 of the tube plate 1. The tube joint part of the heat exchanger characterized by having been made.
の一部とを溶接した後に、該挿通孔２とチューブ３の小
隙から溶融はんだを浸透させてなる特許請求の範囲第１
項記載のチューブ接合部。2. The molten solder is permeated through a small gap between the through hole 2 and the tube 3 after welding the ridge 4 and a part of the hole edge of the tube through hole 2. 1
The tube joint part according to the item.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61178426A JPH0612229B2 (en) | 1986-07-29 | 1986-07-29 | Tube junction of heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61178426A JPH0612229B2 (en) | 1986-07-29 | 1986-07-29 | Tube junction of heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6334491A JPS6334491A (en) | 1988-02-15 |
| JPH0612229B2 true JPH0612229B2 (en) | 1994-02-16 |
Family
ID=16048297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61178426A Expired - Lifetime JPH0612229B2 (en) | 1986-07-29 | 1986-07-29 | Tube junction of heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0612229B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2541755Y2 (en) * | 1989-05-19 | 1997-07-16 | 株式会社 マルナカ | Pipe for refrigerant condenser |
| JP2001248988A (en) * | 2000-03-06 | 2001-09-14 | Mitsubishi Heavy Ind Ltd | Heat exchanger |
| DE102009035089A1 (en) * | 2009-07-28 | 2011-02-03 | Behr Gmbh & Co. Kg | Heat exchanger, internal combustion engine and use of the heat exchanger |
| JP6558269B2 (en) | 2015-02-27 | 2019-08-14 | 株式会社デンソー | Refrigerant evaporator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0233032Y2 (en) * | 1986-06-26 | 1990-09-06 |
-
1986
- 1986-07-29 JP JP61178426A patent/JPH0612229B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6334491A (en) | 1988-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4811258B2 (en) | Heat exchanger | |
| JPH0616308Y2 (en) | Heat exchanger | |
| JP3857791B2 (en) | Heat exchanger tank | |
| GB2089692A (en) | Manufacturing heat exchangers | |
| US5214847A (en) | Method for manufacturing a heat exchanger | |
| JPH09170893A (en) | Heat exchanger, particularly refrigerant evaporator | |
| JPH02154992A (en) | Heat exchanger employing flat tube | |
| JPH11309564A (en) | Heat exchanger | |
| JPH0612229B2 (en) | Tube junction of heat exchanger | |
| JPS6166091A (en) | Manufacture of heat exchanger tube material and core by use of such material and core by use of such material | |
| JPH087247Y2 (en) | Heat exchanger | |
| JPH0245665Y2 (en) | ||
| JPS59225900A (en) | Production of heat exchanger | |
| JPH0717959Y2 (en) | Aluminum heat exchanger | |
| JPH11101594A (en) | Heat exchanger for air-conditioning | |
| JPH0749264Y2 (en) | Heat exchanger | |
| JP3183613B2 (en) | Tank for integrated heat exchanger | |
| JP4255996B2 (en) | Core structure of heat exchanger | |
| JPH11101586A (en) | Flat tube for heat exchanger | |
| JPS643989Y2 (en) | ||
| JP4324890B2 (en) | Manufacturing method of tank for heat exchanger and the tank | |
| JPS6218860Y2 (en) | ||
| JP2989859B2 (en) | Heat exchanger | |
| JPH07305992A (en) | Header tank for heat exchanger | |
| JPH0233032Y2 (en) |