JP2001108386A - Heat exchanger and method for forming tube thereof - Google Patents
Heat exchanger and method for forming tube thereofInfo
- Publication number
- JP2001108386A JP2001108386A JP28753599A JP28753599A JP2001108386A JP 2001108386 A JP2001108386 A JP 2001108386A JP 28753599 A JP28753599 A JP 28753599A JP 28753599 A JP28753599 A JP 28753599A JP 2001108386 A JP2001108386 A JP 2001108386A
- Authority
- JP
- Japan
- Prior art keywords
- flat plate
- tube
- extending toward
- bent
- plate portion
- 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.)
- Pending
Links
Classifications
-
- 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
- F28D1/03—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 plate-like or laminated conduits
- F28D1/0391—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 plate-like or laminated conduits a single plate being bent to form one or more conduits
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】この発明は、例えば車両用空
調装置に用いられるチューブとタンクとが別体型の熱交
換器に関し、特にその熱交換器を構成するチューブの構
造及びその成形方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger in which a tube and a tank used in, for example, an air conditioner for a vehicle are separated from each other, and more particularly to a structure of a tube constituting the heat exchanger and a method of forming the same. is there.
【０００２】[0002]
【従来の技術】車両用空調装置のヒータコアやラジエー
タを構成するチューブは、製造コストの削減等から、特
公平７−４１３３１号公報に示すように、表面にろう材
がクラッドされたアルミニウム材を、ロールホーミング
により両側を多段階に折り曲げてその仕切り部の端面を
対向する壁面の内側に当接させることで断面が略θ状と
なるように成形し、しかる後に炉中ろう付けで仕切り部
とこの仕切り部に対向する壁面とを密接させて内部を複
数の通路に区画するものとなっている。2. Description of the Related Art Tubes constituting a heater core and a radiator of an air conditioner for a vehicle are made of an aluminum material whose surface is clad with a brazing material as shown in Japanese Patent Publication No. The both sides are bent in multiple stages by roll homing, and the end face of the partition is brought into contact with the inside of the opposing wall to form a cross section of substantially θ-shape. The inside is divided into a plurality of passages by closely contacting the wall surface facing the partition portion.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、ロール
ホーミングによる成形では、積層型熱交換器用のプレス
成形の成形プレートを形成する場合よりも寸法誤差が大
きいので、仕切り部の長さにばらつきが生じやすい。こ
のため、仕切り部が所定値よりも短いと仕切り部の端面
とこの仕切り部に対向する壁面との間に隙間が生じて、
熱交換媒体が、一方の通路から他方の通路にバイパスし
たり、外部に漏洩するという不具合があった。However, in forming by roll homing, the dimensional error is larger than in forming a press-formed forming plate for a laminated heat exchanger, so that the length of the partition tends to vary. . Therefore, when the partition is shorter than a predetermined value, a gap is generated between an end surface of the partition and a wall surface facing the partition,
There has been a problem that the heat exchange medium bypasses from one passage to the other passage or leaks to the outside.
【０００４】そこで、この発明は、チューブの仕切り部
とこの仕切り部に対向する壁面との間に隙間が生ずるこ
とを防止した熱交換器及びその熱交換器のチューブの成
形方法を提供することを目的とする。Accordingly, the present invention provides a heat exchanger in which a gap is prevented from being formed between a partition portion of a tube and a wall surface facing the partition portion, and a method of forming a tube of the heat exchanger. Aim.
【０００５】[0005]
【課題を解決するための手段】しかして、この発明に係
る熱交換器は、ロールホーミングにより一枚のプレート
を多段に折り曲げて、少なくとも一方が開口した２つの
通路を有するチューブを形成し、このチューブをフィン
を介在させつつ積層すると共に、前記チューブの通路開
口方向にタンクを配し、このタンクと前記チューブとを
接合することで、前記通路のチューブと前記タンクとが
適宜連通する熱交換器において、前記チューブは、略平
坦で細長い第１の平板部と、前記第１の平板部の両端か
ら略直角方向に連接して形成された第１の立設部と、前
記第１の立設部の反第１の平板部側端から直角方向に連
接して形成され、前記第１の平板部と並行である第２の
平板部と、前記第２の平板部の反第１の立設部側端から
連接して形成された仕切り部とを備え、この仕切り部
は、第１の平板部側に延びる部位と、第２の平板部側に
延びる部位と、第１の平板部側に延びる部位と第２の平
板部側に延びる部位とを連接する折曲部とから成り、こ
の折曲部にて前記第１の平板部に当接することを特徴と
するものである（請求項１）。According to the heat exchanger of the present invention, one plate is bent in multiple stages by roll homing to form a tube having two passages, at least one of which is open. A heat exchanger in which the tubes are stacked with fins interposed therebetween, a tank is arranged in the direction of the passage opening of the tube, and the tank is joined to the tube, whereby the tube in the passage and the tank communicate appropriately. In the above, the tube may be a substantially flat and elongated first flat plate portion, a first standing portion formed from both ends of the first flat plate portion in a substantially right angle direction, and the first standing portion. A second flat plate portion formed so as to be connected to the first flat plate portion side end of the portion in a direction perpendicular to and parallel to the first flat plate portion, and a first upright standing of the second flat plate portion Formed from the side end A partition extending toward the first flat plate, a second extending toward the second flat plate, a first extending toward the first flat plate, and a second extending toward the second flat plate. A bent portion connecting the extending portion and the first flat plate portion at the bent portion (claim 1).
【０００６】そして、上記熱交換器のチューブの成形方
法は、一枚のプレートから成形され、少なくとも一方が
開口した２つの通路を有するチューブと、このチューブ
と交互に積層されるフィンと、前記チューブの通路開口
方向に接合されたタンクとを備えた熱交換器のチューブ
の成形方法において、前記プレートの両側部を多段に折
り曲げることにより、第１の平板部側に延びる部位と、
第２の平板部側に延びる部位と、第１の平板部側に延び
る部位と第２の平板部側に延びる部位とを連接する折曲
部とから成る仕切り部を成形する第１工程と、前記プレ
ートを折り曲げることにより前記仕切り部の折曲部を前
記プレートの非折り曲げ部分に当接させる第２工程とを
備えたものとなっている（請求項２）。The method for forming a tube of the heat exchanger is characterized in that the tube is formed from a single plate and has two passages at least one of which is open; fins alternately stacked with the tube; In a method of forming a tube of a heat exchanger including a tank joined in the direction of the passage opening, a portion extending toward the first flat plate portion by bending both sides of the plate in multiple stages;
A first step of forming a partition portion including a portion extending toward the second flat plate portion, and a bent portion connecting the portion extending toward the first flat plate portion and the portion extending toward the second flat plate portion; A second step of bending the plate to bring the bent portion of the partition into contact with a non-folded portion of the plate (claim 2).
【０００７】これにより、仕切り部の長さのばらつき
は、折曲部から第２の平板部側に延びる部位の先端まで
の長さを調整することにより吸収することができるた
め、仕切り部は、その長さに影響されることなく折曲部
が第１の平板部の内側面に確実に当接されるので、仕切
り部と第１の平板部との隙間が形成されることがない。
すなわち、第２の平板部側に延びる部位は短くなるが、
第１の平板部側に延びる部位があるので、通路と通路と
の仕切りに影響はない。[0007] Thus, the variation in the length of the partition portion can be absorbed by adjusting the length from the bent portion to the end of the portion extending toward the second flat plate portion. Since the bent portion is securely brought into contact with the inner surface of the first flat plate portion without being affected by the length, no gap is formed between the partition portion and the first flat plate portion.
That is, the portion extending to the second flat plate portion side becomes shorter,
Since there is a portion extending toward the first flat plate portion, there is no effect on the partition between the passages.
【０００８】ここで、仕切り部を成形する方法として
は、プレートの両側の端部を立設し、この立設した部位
からこの立設した部位までの長さと略同じ長さほど中央
側に寄った位置で、プレートを折り曲げて成形しても、
プレートの両側の端部を立設し、この立設した部位の中
央部を更に折り曲げて成形しても良い。[0008] Here, as a method of forming the partition portion, both ends of the plate are erected, and the length from the erected portion to the erected portion is closer to the center by the same length as the length from the erected portion. Even if the plate is bent and molded at the position,
The ends on both sides of the plate may be erected, and the central part of the erected part may be further bent and formed.
【０００９】尚、第１工程において、前記仕切り部の第
１の平板部側に延びる部位の寸法が通路の積層方向幅よ
りも大きくなるようにプレートを折り曲げることによ
り、第２工程で曲折部を第１の平板部に当接させるとき
に、この曲折部の外周部分が第１の平板部に食い込むよ
うにしても良く（請求項３）、これにより曲折部と第１
の平板部との接触部分が広くなり、ろう付け性が向上す
ると共に、曲折部と第１の平板部とが水密性良く接合さ
れる。In the first step, the plate is bent so that the dimension of the portion of the partition extending toward the first flat plate side is larger than the width of the passage in the stacking direction, so that the bent portion is formed in the second step. When making contact with the first flat plate portion, the outer peripheral portion of the bent portion may bite into the first flat plate portion (claim 3).
The contact portion with the flat plate portion is widened, the brazing property is improved, and the bent portion and the first flat plate portion are joined with good watertightness.
【００１０】また、第１工程において、第２の平板部側
に延びる部位の寸法が第１の平板部側に延びる部位の寸
法よりも長くなるようにプレートを折り曲げることによ
り、同じく第１工程で、第１の平板部側に延びる部位と
第２の平板部側に延びる部位とを連接する折曲部を成形
するときに、第２の平板部側に延びる部位の先端部分が
第２の平板部に食い込むようにしても良く（請求項
４）、これにより第２の平板部側に延びる部位と第２の
平板部とが水密性良く接合される。In the first step, the plate is bent so that the dimension of the portion extending toward the second flat plate portion is longer than the dimension of the portion extending toward the first flat plate portion. When forming a bent portion connecting a portion extending toward the first flat plate portion and a portion extending toward the second flat plate portion, a tip end portion of the portion extending toward the second flat plate portion is a second flat plate. The portion extending toward the second flat plate portion and the second flat plate portion are joined to each other with good watertightness.
【００１１】[0011]
【発明の実施の形態】以下、この発明の実施の形態を図
面により説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１に示す両タンク型の熱交換器１は、例
えば車両用空調装置においてヒータコアやラジエータと
して用いられるもので、偏平状のチューブ２とコルゲー
ト状のフィン３とを交互に複数段積層し、積層されたチ
ューブ２の長手方向両端をタンク４，５に挿入・接合す
ることにより構成され、チューブ２とタンク４，５とが
別部材となっているものである。A two-tank type heat exchanger 1 shown in FIG. 1 is used as a heater core or a radiator in, for example, an air conditioner for a vehicle, and has a plurality of flat tubes 2 and corrugated fins 3 alternately stacked. The tube 2 and the tanks 4 and 5 are formed by inserting and joining both ends in the longitudinal direction of the stacked tubes 2 to the tanks 4 and 5, so that the tubes 2 and the tanks 4 and 5 are separate members.
【００１３】このうちチューブ２は、例えばろう材がク
ラッドされたアルミニウムを主原料とするアルミニウム
合金で形成され、図２にも示す様に、内部に熱交換媒体
が流れる通路を備えた管部６，６を２つ備えており、各
管部６は、その長手方向両側が開口したものとなってい
る。The tube 2 is made of, for example, an aluminum alloy mainly composed of aluminum clad with a brazing material, and as shown in FIG. 2, a tube portion 6 having a passage through which a heat exchange medium flows. , 6 are provided, and each tube portion 6 is open on both sides in the longitudinal direction.
【００１４】タンク４は、図１に示す様に、縁部が立設
された略平板状のエンドプレート７と、かかるエンドプ
レート７に嵌め込まれる断面が略弓型形状のタンク周壁
８とで基本的に構成されている。このエンドプレート７
とタンク周壁８とは、例えばろう材がクラッドされたア
ルミニウムを主原料とするアルミニウム合金で形成され
ている。As shown in FIG. 1, the tank 4 is basically composed of an end plate 7 having a substantially flat plate shape with an edge and a tank peripheral wall 8 having a substantially arcuate cross section to be fitted into the end plate 7. It is structured. This end plate 7
The tank peripheral wall 8 is made of, for example, an aluminum alloy whose main material is aluminum clad with a brazing material.
【００１５】タンク４の内部は、チューブ２の積層方向
に沿って仕切り部９が設けられ、この仕切り部９が、一
方側をタンク周壁８の頂部に形成された溝部１０と係合
し、他方側をチューブ２と係合させると共にエンドプレ
ート７の内側面に当接させることにより、熱交換媒体を
分配する入口側流路１１と熱交換媒体を集める出口側流
路１２とが略均等の大きさに区画されている。そして、
タンク４の入口側流路１１と出口側流路１２とにはそれ
ぞれ出入口パイプ（図示せず）が接合されている。エン
ドプレート７には、チューブ２の開口側端部の端面と略
同じ大きさの略長円状の接続孔１３が多数、チューブ２
の積層方向に並列的に設けられている。A partition 9 is provided inside the tank 4 along the direction in which the tubes 2 are stacked. The partition 9 engages one side with a groove 10 formed on the top of the tank peripheral wall 8, and the other side. The inlet side channel 11 for distributing the heat exchange medium and the outlet side channel 12 for collecting the heat exchange medium have substantially the same size by engaging the side with the tube 2 and abutting the inner surface of the end plate 7. It is divided into pieces. And
An inlet / outlet pipe (not shown) is connected to each of the inlet-side flow path 11 and the outlet-side flow path 12 of the tank 4. The end plate 7 has a large number of substantially elliptical connection holes 13 having substantially the same size as the end face of the opening end of the tube 2.
Are provided in parallel in the stacking direction.
【００１６】タンク５も、図１に示す様に、平板状のエ
ンドプレート１４と、断面が略弓型形状のタンク周壁１
５とで構成されており、チューブ２が接続されるために
エンドプレート１６には、チューブ２の開口側端部の端
面と略同じ大きさの略長円状の接続孔１７が多数、チュ
ーブ２の積層方向に並列的に設けられているが、その内
部はタンク４とは異なり仕切り壁により仕切られていな
いものである。As shown in FIG. 1, the tank 5 also has a flat end plate 14 and a tank peripheral wall 1 having a substantially arcuate cross section.
The end plate 16 is provided with a large number of substantially elliptical connection holes 17 having substantially the same size as the end face of the open end of the tube 2 because the tube 2 is connected thereto. However, unlike the tank 4, the inside is not partitioned by a partition wall.
【００１７】ところで、この実施形態では、チューブ２
は、図２に示す様に、略平坦な第１の平板部１９と、前
記第１の平板部１９の両端部からこの第１の平板部１９
に連接して形成された略半円状の第１の立設部２０，２
０と、前記第１の立設部２０の反第１の平板部側端から
この第１の立設部２０に連接して形成され、前記第１の
平板部１９とは略並行である共に、前記第１の平板部１
９の短手方向中央の略半分の寸法の第２の平板部２１，
２１と、前記第２の平板部２１の反第１の立設部側端部
から連接して形成された仕切り部２２，２２とで管部
６，６を基本的に構成している。In this embodiment, the tube 2
As shown in FIG. 2, a first flat plate portion 19 which is substantially flat, and the first flat plate portion 19
Semi-circular first standing portions 20 and 2 formed in connection with
0, the first upright portion 20 is formed so as to be connected to the first upright portion 20 from the end of the first upright portion 20 opposite the first flat portion, and is substantially parallel to the first upright portion 19. , The first flat plate portion 1
9, a second flat plate portion 21, which is approximately half the size of the center in the lateral direction,
The pipe portions 6 and 6 are basically constituted by 21 and partition portions 22 and 22 formed continuously from the end of the second flat plate portion 21 on the side opposite to the first standing portion.
【００１８】そして、前記仕切り部２２は、管部６と管
部６とを仕切るもので、第１の平板部１９側に延びる部
位２２ａと、第２の平板部２１側に延びる部位２２ｂ
と、この第１の平板部１９側に延びる部位２２ａと第２
の平板部２１側に延びる部位２２ｂとを連接する湾曲し
た折曲部２２ｃとで略Ｕ字状をなしており、この折曲部
２２ｃにて第１の平板部１９の内側面に当接したものと
なっている。The partition portion 22 separates the pipe portions 6 from each other, and has a portion 22a extending toward the first flat plate portion 19 and a portion 22b extending toward the second flat plate portion 21.
And a portion 22a extending toward the first flat plate portion 19 and the second
And a curved portion 22c connecting the portion 22b extending toward the flat plate portion 21 side of the first flat portion 19 with the curved portion 22c. It has become something.
【００１９】上述したチューブ２は、第１の平板部１
９、第１の立設部２０、第２の立設部２１及び仕切り部
２２が、すべて一連に連接したものであるので、ロール
ホーミングによる成形が可能である。このチューブ２の
成形方法について、図３及び図４を用いて、仕切り部２
２を成形する第１工程と管部６を成形する第２工程とに
分けて説明する。The above-described tube 2 includes a first flat plate portion 1
9, since the first standing portion 20, the second standing portion 21, and the partition portion 22 are all connected in series, molding by roll homing is possible. The method of forming the tube 2 will be described with reference to FIGS.
2 and a second step of forming the tube 6 will be described separately.
【００２０】まず、仕切り部２２を成形する第１工程に
ついて説明する。チューブ２の素材となる薄い長方形状
のろう材が少なくとも外面にクラッドされたプレートを
用い、このプレートの両端を、図３の全体図に示すよう
に下方向に撓ませた状態とし、その状態を維持しつつ図
３の要部拡大図に示す様に、そのプレートの端部近傍部
位（以下、Ａ部とする）を、略水平の状態から（１）及
び（２）に示す様に図上の上方向にプレートの非折曲部
分に対し略直角になるまで２段階に分けて折り曲げる。
次に、プレートの前記Ａ部から先端部までと略同じ長さ
でＡ部から中央側に位置する部位（以下、Ｂ部とする）
を略水平の状態から（３）、（４）、及び（５）に示す
様に、プレートの非折曲げ部分に対し略直角になるまで
３段階に分けて折り曲げる。この場合に、Ｂ部からＣ部
までの長さは、後述の仕切り部２２を第１の平板部１９
に食い込ませる場合を除き、熱交換媒体の流路の積層方
向の幅と同一の寸法を採る。更に、プレートのＡ部を
（６）及び（７）に示す様に、２段階に分けてプレート
の先端部をＢ部と接するまで折り曲げる。これにより、
略Ｕ字状の仕切り部２２が形成される。First, the first step of forming the partition 22 will be described. A plate in which a thin rectangular brazing material as a material of the tube 2 is clad on at least the outer surface is used, and both ends of the plate are bent downward as shown in the overall view of FIG. While maintaining, as shown in the enlarged view of the main part of FIG. 3, the portion near the end of the plate (hereinafter, referred to as portion A) is changed from a substantially horizontal state as shown in (1) and (2). Is bent in two steps in the upward direction until it is substantially perpendicular to the unfolded portion of the plate.
Next, a portion which is substantially the same length as the portion A to the tip portion of the plate and located on the center side from the portion A (hereinafter, referred to as a portion B)
From a substantially horizontal state, as shown in (3), (4), and (5), is bent in three steps until it is substantially perpendicular to the non-bent portion of the plate. In this case, the length from the portion B to the portion C is such that the partition portion 22 described later is
Except for the case where the heat exchange medium is made to bite, the width of the flow path of the heat exchange medium is the same as the width in the stacking direction. Further, as shown in (6) and (7), the portion A of the plate is folded in two stages until the tip of the plate contacts the portion B. This allows
A substantially U-shaped partition part 22 is formed.
【００２１】ここで、仕切り部２２は、第１の平板部側
に延びる部位２２ａと第２の平板部位側に延びる部位２
２ｂとの寸法が必ずしも同じでなくても良い。第２の平
板部位側に延びる部位２２ｂの寸法を若干長くすること
により、第１工程の際に、図５に示すようにその先端部
分を第２の平板部２１に所定値Ｗ（例えば０．０５ｍ
ｍ）程食い込ませることが可能となり、これによって第
２の平板部側に延びる部位２２ｂの先端部分と第２の平
板部２１とを水密性良く接合させることができる。Here, the partition portion 22 includes a portion 22a extending toward the first flat plate portion and a portion 2a extending toward the second flat plate portion.
The dimensions 2b are not necessarily the same. By slightly increasing the dimension of the portion 22b extending to the second flat plate portion side, at the first step, as shown in FIG. 05m
m), it is possible to make a bite, so that the distal end portion of the portion 22b extending toward the second flat plate portion and the second flat plate portion 21 can be joined with good watertightness.
【００２２】次に、管部６を成形する第２工程について
説明する。図３の全体図及び図４の想像線で示す下方に
撓んだ状態で且つ先端に仕切り部２２を有するプレート
を、仕切り部２２とプレートの中央部分との中間部（以
下、Ｃ部という）で、図４の（ａ）、（ｂ）、（ｃ）、
（ｄ）、（ｅ）の順に図上の上方向に略直角になるよう
に折り曲げる。この（ｅ）の折り曲げの際に、矢印
（ｆ）に示す様に、下方向に撓んだプレートを元の状態
に復元する。そして、略直角になった状態から今度は図
４の（ｇ）、（ｈ）、（ｉ）、（ｊ）、（ｋ）の順に仕
切り部２２の折曲部２２ｃがプレートの中央部に当接す
るまで折り曲げる。以上の工程を経ることにより、２つ
の管部６が成形され、チューブ２が完成する。Next, the second step of forming the pipe 6 will be described. A plate which is bent downward and has a partition portion 22 at the tip end as shown by the entire view of FIG. 3 and the imaginary line of FIG. In FIG. 4, (a), (b), (c),
(D) and (e) are bent in the upward direction on the drawing so as to be substantially perpendicular. At the time of the bending of (e), the plate bent downward is restored to the original state as shown by the arrow (f). Then, from the state of being substantially at a right angle, the bent part 22c of the partition part 22 hits the center of the plate in the order of (g), (h), (i), (j), and (k) in FIG. Bend until touching. Through the above steps, two tube portions 6 are formed, and the tube 2 is completed.
【００２３】ここで、仕切り部２２は、第１の平板部側
に延びる部位２２ａの寸法（図５で示すＹの幅）を管部
６の積層方向幅（図５で示すＸの幅）と必ずしも同じ長
さでなくても良い。第１の平板部側に延びる部位２２ａ
の寸法を若干長くすることにより、第２工程の際に、図
５に示すようにその折曲部２２ｃの外周側部分を第１の
平板部１９に所定値Ｚ（例えば０．０５ｍｍ）程食い込
ませることが可能となり、これによって、仕切り部２２
の折曲部２２ｃと第１の平板部１９との接触幅が広くな
りろう付け性が向上するのみならず、折曲部２２ｃと第
１の平板部１９とを水密性良く接合させることができ
る。The partition 22 has a dimension (width Y shown in FIG. 5) of the portion 22a extending toward the first flat plate portion and a width (X width shown in FIG. 5) of the tube 6 in the stacking direction. The lengths need not always be the same. A portion 22a extending toward the first flat plate portion
Is slightly lengthened so that the outer peripheral portion of the bent portion 22c bites into the first flat plate portion 19 by a predetermined value Z (for example, 0.05 mm) in the second step, as shown in FIG. This allows the partition 22
The contact width between the bent portion 22c and the first flat plate portion 19 is widened and not only the brazing property is improved, but also the bent portion 22c and the first flat plate portion 19 can be joined with good watertightness. .
【００２４】そして、上記第１工程及び第２工程を経て
成形されたチューブ３をフィン２と交互に積層し、チュ
ーブ３の開口端をタンクに差し込んで熱交換器を仮組み
付けした後、この熱交換器の仮組付け体を炉中ろう付け
する。これにより、チューブ３とタンク４、チューブ３
とフィン２とがろう付けされると同時に、チューブ３の
仕切り部２２と第１の平板部１９ともろう付けされるこ
ととなる。Then, the tubes 3 formed through the first and second steps are alternately laminated with the fins 2, the open ends of the tubes 3 are inserted into tanks, and a heat exchanger is temporarily assembled. The temporary assembly of the exchanger is brazed in a furnace. Thereby, the tube 3, the tank 4, and the tube 3
The fins 2 are brazed to the partition 22 and the first flat plate 19 of the tube 3 at the same time.
【００２５】しかるに、仕切り部２２の長さのばらつき
は、折曲部２２ｃから第２の平板部２１の先端部までの
長さを調整すること、即ち短くなることで吸収すること
ができる。その一方で、折曲部２２ｃは、第１の平板部
側に延びる部位２２ａが所定寸法であるため、必ず第１
の平板部１９に当接するので、仕切り部２２の長さが短
すぎて第１の平板部１９との間に隙間が生じ、熱交換媒
体がその隙間を介して一方の管部６から他方の管部６に
バイパスしたり、外部に漏洩したりすることがない。However, the variation in the length of the partition portion 22 can be absorbed by adjusting the length from the bent portion 22c to the tip of the second flat plate portion 21, that is, by shortening the length. On the other hand, since the bent portion 22c has the predetermined size at the portion 22a extending toward the first flat plate portion, the bent portion 22c always has the first size.
Since the partitioning portion 22 is too short, a gap is formed between the partitioning portion 22 and the first flat plate portion 19, and the heat exchange medium flows from one pipe portion 6 to the other through the gap. There is no bypass to the tube 6 or leakage to the outside.
【００２６】尚、仕切り部２２の第１工程については、
先に説明した工程に限定されず、図示しないが、プレー
トの両側の端部近傍部位を図３のＢ部において複数段階
に分けて折り曲げて立設した後、この立設部位を図３の
Ａ部において複数段階に分けて折り曲げることにより、
仕切り部２２をＵ字状に形成するようにしても良い。The first step of the partition section 22 is as follows.
Although not limited to the above-described steps, and not shown, the portions near the ends on both sides of the plate are bent and erected in a plurality of steps at a portion B in FIG. By folding it in multiple stages in the part,
The partition part 22 may be formed in a U-shape.
【００２７】また、チューブ２の素材となるプレートの
当該チューブ２が成形された際に内側となる面には、犠
牲層を設けるようにしても良い。Further, a sacrifice layer may be provided on the inner surface of the plate used as the material of the tube 2 when the tube 2 is formed.
【００２８】[0028]
【発明の効果】以上のように、この発明によれば、仕切
り部の長さのばらつきは、折曲部から第２の平板部側に
延びる部位の先端までの長さを調整することにより吸収
することができるため、仕切り部は、その長さに影響さ
れることなく折曲部が第１の平板部の内側面に確実に当
接されるので、仕切り部と第１の平板部との隙間が形成
されることがないことから、熱交換媒体が隙間を介して
一方の通路から他方の通路にバイパスしたり、外部に漏
洩することを回避できる。As described above, according to the present invention, the variation in the length of the partition portion is absorbed by adjusting the length from the bent portion to the tip of the portion extending toward the second flat plate portion. Since the bent portion can reliably contact the inner surface of the first flat plate portion without being affected by its length, the partition portion can be connected to the first flat plate portion. Since the gap is not formed, it is possible to prevent the heat exchange medium from bypassing from one passage to the other passage via the gap or leaking to the outside.
【図１】図１は、この発明に係る熱交換器の一部を破断
して示す斜視図である。FIG. 1 is a partially cutaway perspective view showing a heat exchanger according to the present invention.
【図２】図２は、同上の熱交換器に用いるチューブのタ
ンクとの接続側部位を示す拡大図である。FIG. 2 is an enlarged view showing a portion of a tube used in the heat exchanger, which is connected to a tank.
【図３】図３は、同上のチューブの仕切り部を成形する
第１工程を示す工程図である。FIG. 3 is a process diagram showing a first process of forming a partition portion of the tube according to the first embodiment.
【図４】図４は、同上のチューブをロールホーミングに
より成形する第２工程を示す工程図である。FIG. 4 is a process diagram showing a second process of forming the tube by roll homing.
【図５】図５は、同上のチューブの仕切り部近傍の構成
を示す拡大図である。FIG. 5 is an enlarged view showing a configuration in the vicinity of a partition of the tube according to the first embodiment.
１ 熱交換器 ２ チューブ ３ フィン ４ タンク ５ タンク ６ 管部 ７ エンドプレート ８ タンク周壁 ９ 仕切り部 １０ 溝部 １１ 入口側流路 １２ 出口側流路 １３ 接続孔 １４ エンドプレート １５ タンク周壁 １６ エンドプレート １７ 接続孔 １９ 第１の平板部 ２０ 第１の立設部 ２１ 第２の平板部 ２２ 仕切り部 ２２ａ 第１の平板部側に延びる部位 ２２ｂ 第２の平板部側に延びる部位 ２２ｃ 折曲部 DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Tube 3 Fin 4 Tank 5 Tank 6 Tube part 7 End plate 8 Tank peripheral wall 9 Partition part 10 Groove part 11 Inlet side flow path 12 Outlet side flow path 13 Connection hole 14 End plate 15 Tank peripheral wall 16 End plate 17 Connection Hole 19 First flat portion 20 First upright portion 21 Second flat portion 22 Partition portion 22a A portion extending toward the first flat portion 22b A portion extending toward the second flat portion 22c Bending portion
Claims (4)
を多段に折り曲げて、少なくとも一方が開口した２つの
通路を有するチューブを形成し、このチューブをフィン
を介在させつつ積層すると共に、前記チューブの通路開
口方向にタンクを配し、このタンクと前記チューブとを
接合することで、前記通路のチューブと前記タンクとが
適宜連通する熱交換器において、 前記チューブは、略平坦で細長い第１の平板部と、前記
第１の平板部の両端から略直角方向に連接して形成され
た第１の立設部と、前記第１の立設部の反第１の平板部
側端から直角方向に連接して形成され、前記第１の平板
部と並行である第２の平板部と、前記第２の平板部の反
第１の立設部側端から連接して形成された仕切り部とを
備え、 この仕切り部は、第１の平板部側に延びる部位と、第２
の平板部側に延びる部位と、第１の平板部側に延びる部
位と第２の平板部側に延びる部位とを連接する折曲部と
から成り、この折曲部にて前記第１の平板部に当接する
ことを特徴とする熱交換器。1. A single plate is bent in multiple stages by roll homing to form a tube having two passages, at least one of which is open, and the tubes are laminated with fins interposed therebetween, and the passage opening of the tube is formed. By disposing a tank in the direction and joining the tank and the tube, in a heat exchanger in which the tube of the passage and the tank communicate appropriately, the tube has a substantially flat and elongated first flat plate portion. A first upright portion formed from both ends of the first flat portion in a direction substantially perpendicular to the first flat portion; and a first upright portion connected to an opposite end of the first upright portion in a direction perpendicular to the first flat portion. A second flat plate portion formed in parallel with the first flat plate portion, and a partition portion formed continuously from an end of the second flat plate portion opposite the first upright portion, This partition part is on the first flat plate part side. And a site that extends, the second
And a bent portion connecting the portion extending toward the first flat plate portion and the portion extending toward the second flat plate portion. The first flat plate is formed at the bent portion. A heat exchanger characterized by contacting a part.
も一方が開口した２つの通路を有するチューブと、この
チューブと交互に積層されるフィンと、前記チューブの
通路開口方向に接合されたタンクとを備えた熱交換器の
チューブの成形方法において、 前記プレートの両側部を多段に折り曲げることにより、
第１の平板部側に延びる部位と、第２の平板部側に延び
る部位と、第１の平板部側に延びる部位と第２の平板部
側に延びる部位とを連接する折曲部とから成る仕切り部
を成形する第１工程と、 前記プレートを折り曲げることにより前記仕切り部の折
曲部を前記プレートの非折り曲げ部分に当接させる第２
工程とを備えたことを特徴とする熱交換器のチューブの
成形方法。2. A tube formed from one plate and having two passages, at least one of which is open, a fin alternately laminated with the tube, and a tank joined in a passage opening direction of the tube. In the method for forming a tube of a heat exchanger provided, by bending both sides of the plate in multiple stages,
A portion extending toward the first flat plate portion, a portion extending toward the second flat plate portion, and a bent portion connecting the portion extending toward the first flat plate portion and the portion extending toward the second flat plate portion. A second step of forming a partition portion having the same shape; and a second step of bending the plate to bring the bent portion of the partition portion into contact with a non-folded portion of the plate.
And a process for forming a tube of a heat exchanger.
の平板部側に延びる部位の寸法が通路の積層方向幅より
も大きくなるようにプレートを折り曲げることにより、
第２工程で曲折部を第１の平板部に当接させるときに、
この曲折部の外周部分が第１の平板部に食い込むように
したことを特徴とする請求項２に記載のチューブの成形
方法。3. The method according to claim 1, wherein in the first step, the first
By bending the plate so that the dimension of the portion extending to the flat plate side becomes larger than the width of the passage in the stacking direction,
When the bent portion is brought into contact with the first flat plate portion in the second step,
The tube forming method according to claim 2, wherein an outer peripheral portion of the bent portion is cut into the first flat plate portion.
びる部位の寸法が第１の平板部側に延びる部位の寸法よ
りも長くなるようにプレートを折り曲げることにより、
同じく第１工程で、第１の平板部側に延びる部位と第２
の平板部側に延びる部位とを連接する折曲部を成形する
ときに、第２の平板部側に延びる部位の先端部分が第２
の平板部に食い込むようにしたことを特徴とする請求項
２に記載の熱交換器のチューブの成形方法。4. In the first step, the plate is bent such that the size of a portion extending toward the second flat plate portion is longer than the size of a portion extending toward the first flat plate portion.
Similarly, in the first step, a portion extending to the first flat plate portion side and the second
When forming a bent portion connecting the portion extending to the flat plate portion side, the tip end portion of the portion extending to the second flat plate portion side is the second portion.
3. The method for forming a tube of a heat exchanger according to claim 2, wherein said flat plate portion is cut into said flat plate portion.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28753599A JP2001108386A (en) | 1999-10-08 | 1999-10-08 | Heat exchanger and method for forming tube thereof |
| PCT/JP2000/005831 WO2001018472A1 (en) | 1999-09-08 | 2000-08-29 | Heat exchanger, tube for heat exchanger, and method of manufacturing the heat exchanger and the tube |
| EP00955098A EP1213555B1 (en) | 1999-09-08 | 2000-08-29 | Tube for heat exchanger, and method of manufacturing the heat exchanger tube |
| DE60032525T DE60032525T2 (en) | 1999-09-08 | 2000-08-29 | Tube for heat exchanger |
| DE60019940T DE60019940T2 (en) | 1999-09-08 | 2000-08-29 | HEAT EXCHANGE TUBE AND METHOD FOR PRODUCING THE HEAT EXCHANGE TUBE |
| EP04029698A EP1521050B1 (en) | 1999-09-08 | 2000-08-29 | Tube for heat exchanger |
| US10/070,539 US6591900B1 (en) | 1999-09-08 | 2000-08-29 | Heat exchanger, tube for heat exchanger, and method of manufacturing the heat exchanger and the tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28753599A JP2001108386A (en) | 1999-10-08 | 1999-10-08 | Heat exchanger and method for forming tube thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001108386A true JP2001108386A (en) | 2001-04-20 |
Family
ID=17718610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28753599A Pending JP2001108386A (en) | 1999-09-08 | 1999-10-08 | Heat exchanger and method for forming tube thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001108386A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004099697A1 (en) * | 2003-05-08 | 2004-11-18 | T. Rad Co., Ltd. | Flat tube for aluminium heat exchanger |
-
1999
- 1999-10-08 JP JP28753599A patent/JP2001108386A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004099697A1 (en) * | 2003-05-08 | 2004-11-18 | T. Rad Co., Ltd. | Flat tube for aluminium heat exchanger |
| CN100398973C (en) * | 2003-05-08 | 2008-07-02 | 株式会社T.Rad | Flat tube for aluminium heat exchanger |
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