JPH04361824A - Method for forming flat tube with internal partition wall for heat exchanger - Google Patents
Method for forming flat tube with internal partition wall for heat exchangerInfo
- Publication number
- JPH04361824A JPH04361824A JP13394991A JP13394991A JPH04361824A JP H04361824 A JPH04361824 A JP H04361824A JP 13394991 A JP13394991 A JP 13394991A JP 13394991 A JP13394991 A JP 13394991A JP H04361824 A JPH04361824 A JP H04361824A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- partition wall
- heat exchanger
- internal partition
- 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.)
- Granted
Links
- 238000005192 partition Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 13
- 238000005219 brazing Methods 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 7
- 230000004907 flux Effects 0.000 description 4
- 239000011162 core material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy 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
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 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)
Abstract
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 flat tubes with internal partition walls for heat exchangers such as condensers and evaporators for car air conditioners.
【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。BACKGROUND OF THE INVENTION 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。[Problem to be solved by the invention] In the case of extrusion molding,
Due to limitations in extrusion technology, the wall thickness of the tube is 0.4 to 0.
A length of 5 mm or more was required, 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。[0004]Also, in order to improve the heat exchange performance of the tube, it is possible to increase the heat transfer area by lowering the height of the tube or increasing the number of partition walls, but if this is done, the inevitable The cross-sectional area of the passage inside the tube became smaller, which also had limitations in extrusion technology, and there was also a limit to 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 for forming a tube that can reduce the weight of the tube and improve 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横断面Ｕ字
状内方突出部を成形し、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] A method for forming a flat tube with an internal partition wall for a heat exchanger according to the present invention provides a round tube with an inward protrusion having a U-shaped cross section for forming a partition wall extending in the length direction of the tube. The tube is then flattened so that the tip of the inward protrusion comes 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断面Ｕ字状内方突
出部を成形し、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。[Operation] In the method according to the present invention, an inward protruding part having a U-shaped cross section for forming a partition wall extending in the length direction of the tube is formed on a round tube, and the tip of the inward protruding part is connected to the tube on the opposite side. Since the tube is formed into a flat shape so as to come into contact with the inner surface, the tube can be 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。DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will now be described 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、ＪＩＳ１１００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。In the method according to the present invention, a round tube 11 having a circular cross section as shown in FIG. 1(a) is used. The round tube 11 is a clad plate formed into a pipe shape by electric resistance welding. As shown in FIG. 2, the clad plate has a core material 21.
A brazing material layer 22 is formed on both sides by rolling, and the thickness T thereof is 0.18 to 0.20 mm. The core material 21 is made of JIS 1100 series pure aluminum. The brazing material layer 22 is made of, for example, an aluminum alloy according to JISBA4343.
【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。[0010] In addition, instead of the clad plate, a brazing filler metal layer is formed on the inner surface of the core material, and an Al-Z layer is formed on the outer surface.
A clad plate having an anti-corrosion layer formed 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１
２と同時に、溝１３が成形される。When forming a tube, first, as shown in FIG.
As shown in FIG. 2, three inward protrusions 12 extending in the length direction of the round tube 11 are formed in the semicircular upper half of the round tube 11.
to form. This shaping is performed by pressing a roll (not shown) against the corresponding portion of the tube 11 to deform the tube itself into a U-shaped cross section, and the inward protrusion 1
At the same time as 2, grooves 13 are formed.
【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 having the inwardly protruding portion 12 formed therein is reduced. By this diameter reduction, the distance between the two side surfaces of the groove 13 is gradually narrowed, and finally, the two side surfaces of the groove 13 are completely aligned.
【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. 1(d), the reduced diameter tube 11 is pinched from above and below and compressed to form a flat shape. As a result, the tips of the three inward protrusions 12 are brought into contact with the inner surface of the tube 11 on the opposite side, that is, the lower half, and the inside of the tube 11 is provided with four partitions partitioned by the three inward protrusions 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 width A of the flat tube 11 formed as described above is 16 to 20 mm, and the height B is 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。The flat tube 11, as shown in FIG.
It is assembled with the header 31 and fins 32 and vacuum brazed to form a heat exchanger. That is, the end of the flat tube 11 is inserted into the long hole 33 formed in the header 31. Corrugated fins 32 are interposed between 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。[0016] When brazing using a fluoride flux, it is necessary to apply the flux to the inner surface of the tube, but in this case, when forming the tube,
Flux can be easily applied by applying flux to the inner surface of the tube in advance.
【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 when the end of the flat tube 11 is inserted into the header elongated hole 33, there is only a gap that can be closed by brazing between the circumferential surface of the elongated hole 33 and the outer surface of the tube 11. As a result of 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。Furthermore, as a result of brazing, both side surfaces of the groove 13 are joined together, so the strength of the inward protrusion 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 into a flat shape without performing the diameter reduction described above, with the grooves 13 still existing on the outer surface of the tube 11. In that case, before inserting the end of the tube 11 into the header elongated hole 33, it is necessary to fill the groove 13 at the end of the tube 11.
【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。[0020] When a tube formed into a flat shape without reducing its diameter is used as a vertical heat exchange tube of an evaporator, the remaining portion of the groove is used as a groove for draining condensed 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４
２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 explained. In FIG. 4, the upper half of the round tube 41 has two inward protrusions 4.
2, one inward protruding part is formed in the lower half of the tube 11 together with the groove 43, the diameter is reduced, and then flattened.
On the inner surface, one lower inward projection 42 abuts 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 inward protrusions 52 are formed on the upper and lower halves of the round tube 51 together with grooves 53.
After the diameter is reduced, the tips of the three inward protrusions 52 on the upper side and the three inward protrusions 53 on the lower side are brought into contact with each other by forming them into a flat shape.
【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。[Effects of the Invention] According to the present invention, since the tube is formed without extrusion molding, it is not subject to the limitations of extrusion technology, so it is possible to reduce the weight of the tube and improve the heat exchange performance of the tube. It is possible to do so.
【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 the 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 cross-sectional view of the tubing material used in the method according to the 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 the 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 diagram 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 diagram 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
Claims (1)
びた仕切壁形成用横断面Ｕ字状内方突出部を成形し、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。[Claim 1] An inward protruding part having a U-shaped cross section for forming a partition wall extending in the length direction of the tube is formed on a round tube, and the tip of the inward protruding part is brought into contact with the inner surface of the tube on the opposite side. A method for forming flat tubes with internal partition walls for heat exchangers.
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 true JPH04361824A (en) | 1992-12-15 |
| JP3084535B2 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000045102A1 (en) * | 1999-01-28 | 2000-08-03 | Norsk Hydro Asa | Flat oval tube |
| WO2017154465A1 (en) * | 2016-03-10 | 2017-09-14 | 株式会社デンソー | Air conditioning device |
| 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
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000045102A1 (en) * | 1999-01-28 | 2000-08-03 | Norsk Hydro Asa | Flat oval tube |
| WO2017154465A1 (en) * | 2016-03-10 | 2017-09-14 | 株式会社デンソー | Air conditioning device |
| JP2017159814A (en) * | 2016-03-10 | 2017-09-14 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3084535B2 (en) | 2000-09-04 |
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