JP3084535B2 - Forming method of flat tube with internal partition wall for heat exchanger - Google Patents
Forming method of flat tube with internal partition wall for heat exchangerInfo
- Publication number
- JP3084535B2 JP3084535B2 JP03133949A JP13394991A JP3084535B2 JP 3084535 B2 JP3084535 B2 JP 3084535B2 JP 03133949 A JP03133949 A JP 03133949A JP 13394991 A JP13394991 A JP 13394991A JP 3084535 B2 JP3084535 B2 JP 3084535B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- partition wall
- heat exchanger
- forming method
- flat 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 - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 15
- 238000005192 partition Methods 0.000 title claims description 8
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005219 brazing Methods 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 7
- 230000004907 flux Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011162 core material Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910018117 Al-In Inorganic materials 0.000 description 1
- 229910018456 Al—In Inorganic materials 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 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
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、例えばカーエヤコン
のコンデンサーやエバポレータのような熱交換器の内部
仕切壁付偏平チューブを成形する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a flat tube having an internal partition wall of a heat exchanger such as a condenser or an evaporator of a car air conditioner.
【０００２】[0002]
【従来の技術】従来、この種のチューブの成形は、アル
ミニウム押出成形によっていた。2. Description of the Related Art Conventionally, this type of tube has been formed by aluminum extrusion.
【０００３】[0003]
【発明が解決しようとする課題】押出成形による場合、
押出技術上の制約から、チューブの肉厚が０．４〜０．
５mm以上必要であり、チューブの軽量化を図る上でネッ
クとなっていた。In the case of extrusion molding,
Due to the limitations of the extrusion technology, the wall thickness of the tube is 0.4 to 0.5 mm.
5 mm or more was necessary, which was a bottleneck in reducing the weight of the tube.
【０００４】また、チューブの熱交換性能を向上させる
には、チューブの高さを低くしたり、仕切壁の数を増加
させて伝熱面積を増加させればよいが、そうすれば、必
然的にチューブ内通路の断面積が小さくなり、これにも
押出技術上の制約があり、仕切壁の数を増加させるにも
限界があった。Further, in order to improve the heat exchange performance of the tube, the height of the tube may be reduced or the number of partition walls may be increased to increase the heat transfer area. In addition, the cross-sectional area of the passage in the tube is reduced, which also has a limitation in the extrusion technique, and there is a limit in increasing the number of partition walls.
【０００５】この発明の目的は、チューブの軽量化を図
るとともに、チューブの熱交換性能を向上させることの
できるチューブを成形する方法を提供することにある。An object of the present invention is to provide a method of forming a tube capable of reducing the weight of the tube and improving the heat exchange performance of the tube.
【０００６】[0006]
【課題を解決するための手段】この発明による熱交換器
用内部仕切壁付偏平チューブの成形方法は、丸チューブ
に、チューブ長さ方向にのびた仕切壁形成用内方突出部
をチューブ自体を横断面Ｕ字状に変形させることにより
成形し、内方突出部を成形したチューブを縮径して内方
突出部の対向部分が重合されるように内方突出部を押潰
し、押潰した内方突出部の先端を、これの向い側のチュ
ーブ内面に当接させるようにチューブを偏平に成形する
ものである。Means for Solving the Problems] molding method of a heat exchanger inside the partition walls with the flat tubes according to the present invention, a round tube, the tube length direction extending the partition wall forming inwardly projecting portions
Is formed by deforming the tube itself into a U-shaped cross section.
Crush the inward protrusion so that the opposite part of the protrusion overlaps
Then, the tube is formed flat so that the tip of the crushed inwardly protruding portion is brought into contact with the inner surface of the tube on the opposite side.
【０００７】[0007]
【作用】この発明による方法では、丸チューブに、チュ
ーブ長さ方向にのびた仕切壁形成用横内方突出部をチュ
ーブ自体を断面Ｕ字状に変形させることにより成形し、
内方突出部を成形したチューブを縮径して内方突出部の
対向部分が重合されるように内方突出部を押潰し、押潰
した内方突出部の先端を、これの向い側のチューブ内面
に当接させるようにチューブを偏平に成形するから、押
出成形によらずにチューブが成形される。[Action] In the process according to the invention, a round tube, Ju lateral inward protrusion for a partition wall formed extending in the tube length direction
By deforming the probe itself into a U-shaped cross section ,
Reduce the diameter of the tube that has the
Crush the inward protruding part so that the opposing part is superimposed, and crush
The tube is formed flat so that the tip of the inwardly projecting portion contacts the inner surface of the tube on the opposite side of the tube, so that the tube is formed without using extrusion molding.
【０００８】[0008]
【実施例】この発明の実施例を、図面を参照してつぎに
説明する。Embodiments of the present invention will be described below with reference to the drawings.
【０００９】この発明による方法には、図１(a) に示す
横断面円形の丸チューブ11を用いる。丸チューブ11は、
クラッド板を電縫加工でパイプ状に成形したものであ
る。クラッド板は、図２に示すように、芯材21の両面に
それぞれろう材層22を圧延形成したものであり、その厚
みＴは０．１８〜０．２０mmである。芯材21は、ＪＩＳ
１１００系の純アルミニウム製である。ろう材層22は、
例えばＪＩＳＢＡ４３４３のアルミニウム合金製であ
る。The method according to the present invention uses a round tube 11 having a circular cross section as shown in FIG. Round tube 11,
The clad plate is formed into a pipe by electric resistance welding. As shown in FIG. 2, the clad plate is obtained by rolling brazing material layers 22 on both surfaces of a core material 21 and has a thickness T of 0.18 to 0.20 mm. The core material 21 is JIS
It is made of 1100 series pure aluminum. The brazing material layer 22,
For example, it is made of JISBA4343 aluminum alloy.
【００１０】また、上記クラッド板に代えて、芯材の内
面がわにのみろう材層を形成し、外面側には、ＡｌーＺ
ｎ系またはＡｌーＩｎ系合金からなる防食層を形成した
クラッド板を用いてもよい。Further, instead of the clad plate, a brazing material layer is formed on the inner surface of the core material, and an Al-Z
A clad plate having an anticorrosion layer made of an n-based or Al-In-based alloy may be used.
【００１１】チューブの成形に際し、まず、図１(b) に
示すように、丸チューブ11の上半分の半円形の部分に、
チューブ長さ方向にのびた３つの内方突出部12を成形す
る。この成形は、チューブ11の対応する部分にロール
（図示しない）を押付けてチューブ自体を横断面Ｕ字状
に変形させることにより行われ、内方突出部12と同時
に、溝13が成形される。When forming the tube, first, as shown in FIG.
Three inwardly projecting portions 12 extending in the tube length direction are formed. This molding is performed by pressing a roll (not shown) against a corresponding portion of the tube 11 to deform the tube itself into a U-shaped cross section, and the groove 13 is formed at the same time as the inward protruding portion 12.
【００１２】つぎに、図１(c) に示すように、内方突出
部12を成形したチューブ11を縮径する。この縮径によ
り、溝13両側面の間隔が漸次狭められ、最終的に、溝13
両側面は完全に合わされる。Next, as shown in FIG. 1 (c), the diameter of the tube 11 formed with the inwardly protruding portion 12 is reduced. Due to this diameter reduction, the distance between both side surfaces of the groove 13 is gradually reduced, and finally, the groove 13
Both sides are perfectly fitted.
【００１３】そして、図１(d) に示すように、縮径した
チューブ11を上下から挾んで圧縮し、偏平状に成形す
る。その結果、３つの内方突出部12の先端は、それぞれ
の向い側、すなわち下半分のチューブ11内面に当接さ
れ、チューブ11の内部には、３つの内方突出部12で仕切
られた４つの通路14が並列状に形成される。Then, as shown in FIG. 1D, the reduced-diameter tube 11 is compressed from above and below to form a flat shape. As a result, the tips of the three inwardly projecting portions 12 are in contact with the respective opposite sides, that is, the inner surfaces of the tubes 11 in the lower half, and the inside of the tube 11 is partitioned by the three inwardly projecting portions 12. Two passages 14 are formed in parallel.
【００１４】以上のようにして成形された偏平チューブ
11の巾Ａは１６〜２０mmであり、高さＢは２mmである。The flat tube formed as described above
11 has a width A of 16 to 20 mm and a height B of 2 mm.
【００１５】偏平チューブ11は、図３に示すように、ヘ
ッダ31およびフィン32とともに組立られ、真空ろう付さ
れて熱交換器となる。すなわち、ヘッダ31にあけられた
長孔33に偏平チューブ11の端部が挿入される。隣り合う
偏平チューブ11の間にはコルゲートフィン32が介在され
る。As shown in FIG. 3, the flat tube 11 is assembled together with a header 31 and fins 32, and is brazed under vacuum to form a heat exchanger. That is, the end of the flat tube 11 is inserted into the long hole 33 opened in the header 31. Corrugated fins 32 are interposed between the adjacent flat tubes 11.
【００１６】なお、弗化物系のフラックスを使用してろ
う付する場合、チューブの内面側にもフラックスを塗布
する必要があるが、この場合、チューブの成形に際し、
あらかじめチューブの内面にフラックスを塗布しておけ
ば、フラックスの塗布が容易に行える。When brazing using a fluoride-based flux, it is necessary to apply the flux also to the inner surface side of the tube. In this case, when forming the tube,
If a flux is applied to the inner surface of the tube in advance, the flux can be easily applied.
【００１７】ヘッダ長孔33に偏平チューブ11の端部を挿
入した状態でチューブ11外面には溝13が無いため、長孔
33周面とチューブ11外面の間にはろう付により閉じられ
る隙間のみが存在するため、ろう付の結果、ヘッダ31と
チューブ11は洩れの恐れなく接合される。Since there is no groove 13 on the outer surface of the tube 11 with the end of the flat tube 11 inserted in the header long hole 33, the long hole
Since only a gap closed by brazing exists between the peripheral surface of the tube 33 and the outer surface of the tube 11, as a result of the brazing, the header 31 and the tube 11 are joined without fear of leakage.
【００１８】さらに、ろう付の結果、溝13両側面が合わ
された状態で接合されるため、内方突出部12の強度は十
分である。Further, as a result of brazing, the grooves 13 are joined in a state where both side surfaces are joined, so that the strength of the inwardly protruding portion 12 is sufficient.
【００１９】また、上記縮径を行わず、チューブ11外面
に溝13が存在するままの状態で、チューブ11を偏平に成
形してもよい。その場合、ヘッダ長孔33にチューブ11の
端部を挿入する前に、チューブ11の端部の溝13を、埋め
ておく必要がある。Alternatively, the tube 11 may be formed flat while the groove 13 is still present on the outer surface of the tube 11 without reducing the diameter. In that case, it is necessary to fill the groove 13 at the end of the tube 11 before inserting the end of the tube 11 into the header long hole 33.
【００２０】縮径を行わないで偏平に成形したチューブ
を、エバポレータの垂直熱交換管に用いると、溝の残存
した部分が結露水排水用の溝として利用される。When a flat tube without reducing the diameter is used for a vertical heat exchange tube of an evaporator, the remaining portion of the groove is used as a groove for draining dew water.
【００２１】つぎに、他の実施例について説明する。図
４では、丸チューブ41の上半分に２つの内方突出部42
を、下半分に１つの内方突出部を、それぞれ溝43ととも
に成形し、縮径した後、偏平に成形することにより、上
側の２つの内方突出部42が下半分のチューブ11内面に、
下側の１つの内方突出部42が上半分のチューブ42内面に
当接させられている。Next, another embodiment will be described. In FIG. 4, the upper half of the round tube 41 has two inwardly projecting portions 42.
By forming one inward protrusion in the lower half together with the groove 43, reducing the diameter, and then flattening, the two upper inward protrusions 42 on the inner surface of the tube 11 in the lower half,
One lower inward protrusion 42 is in contact with the inner surface of the upper half tube 42.
【００２２】図５では、丸チューブ51の上半分と下半分
に内方突出部52を３つずつ溝53とともに成形し、縮径し
た後、偏平に成形することにより、上側の３つの内方突
出部52と下側の３つの内方突出部53の先端同士当接させ
られている。In FIG. 5, three inwardly projecting portions 52 are formed on the upper half and the lower half of the round tube 51 together with the groove 53, and the diameter is reduced. The tips of the projecting portion 52 and the three lower inward projecting portions 53 are brought into contact with each other.
【００２３】[0023]
【発明の効果】この発明によれば、押出成形によらずに
チューブが成形されるから、押出技術上の制約を受けな
いため、チューブの軽量化が可能であり、チューブの熱
交換性能を向上させることが可能である。According to the present invention, since the tube is formed without using extrusion, there is no restriction on the extrusion technique, so that the tube can be reduced in weight and the heat exchange performance of the tube can be improved. It is possible to do.
【図面の簡単な説明】[Brief description of the drawings]
【図１】この発明による方法を順に示す工程図である。FIG. 1 is a process diagram sequentially showing a method according to the present invention.
【図２】この発明による方法に用いられるチューブ材料
の断面図である。FIG. 2 is a sectional view of a tube material used in the method according to the present invention.
【図３】この発明による方法により成形されたチューブ
の使用説明図である。FIG. 3 is an explanatory view of use of a tube formed by the method according to the present invention.
【図４】他の実施例を示す図１相当の工程図である。FIG. 4 is a process drawing corresponding to FIG. 1 showing another embodiment.
【図５】さらに他の実施例を示す図１相当の工程図であ
る。FIG. 5 is a process drawing corresponding to FIG. 1, showing still another embodiment.
11，41，51 チューブ 12，42，52 内方突出部 11, 41, 51 Tube 12, 42, 52 Inward protrusion
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B21C 37/15 B21D 41/04 B21D 53/06 B21D 53/08 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) B21C 37/15 B21D 41/04 B21D 53/06 B21D 53/08
Claims (1)
た仕切壁形成用内方突出部をチューブ自体を横断面Ｕ字
状に変形させることにより成形し、内方突出部を成形し
たチューブを縮径して内方突出部の対向部分が重合され
るように内方突出部を押潰し、押潰した内方突出部の先
端を、これの向い側のチューブ内面に当接させるように
チューブを偏平に成形する、熱交換器用内部仕切壁付偏
平チューブの成形方法。An inwardly projecting portion for forming a partition wall extending in a tube length direction is provided on a round tube so that the tube itself has a U-shaped cross section.
Shaped by deforming the Jo, molding the inwardly projecting portion
The diameter of the tube is reduced, and the opposite part of the
Flatten the tube so that the tube protrudes flat so that the tip of the protruded portion protrudes into contact with the inner surface of the tube on the opposite side. Tube forming method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03133949A JP3084535B2 (en) | 1991-06-05 | 1991-06-05 | Forming method of flat tube with internal partition wall for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03133949A JP3084535B2 (en) | 1991-06-05 | 1991-06-05 | Forming method of flat tube with internal partition wall for heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04361824A JPH04361824A (en) | 1992-12-15 |
| JP3084535B2 true JP3084535B2 (en) | 2000-09-04 |
Family
ID=15116840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03133949A Expired - Fee Related JP3084535B2 (en) | 1991-06-05 | 1991-06-05 | Forming method of flat tube with internal partition wall for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3084535B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000045102A1 (en) * | 1999-01-28 | 2000-08-03 | Norsk Hydro Asa | Flat oval tube |
| JP6565744B2 (en) * | 2016-03-10 | 2019-08-28 | 株式会社デンソー | Air conditioner |
| CN116871837A (en) * | 2023-09-04 | 2023-10-13 | 中山莱通金属科技有限公司 | Micro-channel porous flat tube process for low-cost parallel flow radiator |
-
1991
- 1991-06-05 JP JP03133949A patent/JP3084535B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04361824A (en) | 1992-12-15 |
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