JP2011163642A - Flat tube for heat exchanger without header plate - Google Patents

Flat tube for heat exchanger without header plate Download PDF

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JP2011163642A
JP2011163642A JP2010026219A JP2010026219A JP2011163642A JP 2011163642 A JP2011163642 A JP 2011163642A JP 2010026219 A JP2010026219 A JP 2010026219A JP 2010026219 A JP2010026219 A JP 2010026219A JP 2011163642 A JP2011163642 A JP 2011163642A
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plate
flat tube
heat exchanger
side walls
contact
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JP5519311B2 (en
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Toshikatsu Yatani
敏克 八谷
Eriko Watase
恵梨子 渡瀬
yuta Asano
勇太 浅野
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T Rad Co Ltd
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T Rad Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To uniformly braze each groove-shaped plate inner face and an inner fin during brazing, in a flat tube for a heat exchanger without header plates. <P>SOLUTION: Step parts 7 are formed on both side walls 1 of a first plate 3 formed to have a groove shape, and notches 8 formed at lower edges of both side walls 1 of a second plate 4 also formed to have a groove shape excluding both ends in the longitudinal direction. Only the both ends of the side walls 1 of the second plate 4 are brought into contact with the step parts 7 of the first plate 3, and integrally brazed and fixed in the pressurized state in the thickness direction. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、主としてＥＧＲクーラとして用いられるヘッダプレートレスタイプの熱交換器の偏平チューブに関する。   The present invention relates to a flat tube of a header plateless type heat exchanger mainly used as an EGR cooler.

ヘッダプレートレス熱交換器として、下記特許文献１が知られている。
これは、一対の溝型プレートを互いに逆向きに嵌着して偏平チューブを構成し、その両端開口部を厚み方向に拡開したものである。このような偏平チューブを厚み方向に多数積層し、熱交換器コアを構成する。そして、そのコアの外周にケーシングを被嵌すると共に、コアの長手方向両端にヘッダ本体を被嵌したものである。なお、偏平チューブには通常インナーフィンが介装される。
このようなコアは、その偏平チューブの両端部の外面どうしが互いに接触し、その中間部には隙間が形成され、そこに冷却水が流通する。そして、チューブ内には排ガスが流通し、それを冷却水によって冷却するものである。
このような熱交換器にはヘッダプレートが不要であり、部品点数が少なく、組み立て容易である特徴がある。
次に、特許文献２に記載の発明の内、その図５、図６に記載されたヘッダプレートレスの偏平チューブは、下側の溝形プレートの側壁の先端部が内側に段付きに形成され、その段部に上側の溝形プレートの側壁先端部が嵌着するものである。 The following Patent Document 1 is known as a header plateless heat exchanger.
This is a flat tube formed by fitting a pair of groove-type plates in opposite directions, with both end openings widened in the thickness direction. A large number of such flat tubes are laminated in the thickness direction to constitute a heat exchanger core. The casing is fitted on the outer periphery of the core, and the header body is fitted on both ends of the core in the longitudinal direction. The flat tube is usually provided with an inner fin.
In such a core, the outer surfaces of both ends of the flat tube are in contact with each other, a gap is formed in an intermediate portion thereof, and cooling water flows therethrough. And exhaust gas distribute | circulates in a tube and it is cooled with cooling water.
Such a heat exchanger does not require a header plate, has a small number of parts, and is easy to assemble.
Next, in the invention described in Patent Document 2, the flat plate of the header plateless shown in FIGS. 5 and 6 is formed such that the front end of the side wall of the lower groove plate is stepped inward. The tip of the side wall of the upper channel plate is fitted to the step.

ＷＯ２００６／１０２７３６Ａ１号公報WO2006 / 102736A1 特開２００４−２８４６９号公報JP 2004-28469 A

このような、ヘッダレスタイプの熱交換器は、各偏平チューブおよびケーシングが厚み方向に上下に分割され、それらを重ね合せたうえに、厚み方向に互いに圧着した状態で、高温の炉内で一体的にろう付け固定されるものである。
そのとき、偏平チューブ内に介装されたインナーフィンと各プレートとの間に部分的にろう付けされない部分が生じることがある。同様にケーシングと偏平チューブとの間にも隙間が形成されるおそれがある。これは、特に特許文献２の図５、図６の場合に発生し易い。これは偏平チューブの精度、その他に基づく。一例として、偏平チューブの長手方向の中間部の側壁高さが僅かに高くてもその部分のみが接触し、他の部分に隙間が生じることがあるからである。
そこで、本発明は寸法精度に多少問題があっても正確に各部品間を密着させ、ろう付けできる構造の偏平チューブを提供することを課題とする。 In such a headerless type heat exchanger, each flat tube and casing are divided vertically in the thickness direction, and after they are stacked, they are integrated in a high-temperature furnace in a state where they are crimped together in the thickness direction. It is brazed and fixed.
At that time, a portion that is not partially brazed may be formed between the inner fin and each plate interposed in the flat tube. Similarly, a gap may be formed between the casing and the flat tube. This is particularly likely to occur in the case of FIG. 5 and FIG. This is based on the accuracy of the flat tube, etc. As an example, even if the side wall height of the intermediate portion in the longitudinal direction of the flat tube is slightly high, only that portion contacts and a gap may occur in the other portion.
Accordingly, an object of the present invention is to provide a flat tube having a structure in which parts can be brought into close contact with each other and brazed accurately even if there is some problem in dimensional accuracy.

請求項１に記載の本発明は、それぞれ幅方向の両側に一対の側壁(1)を有する偏平な溝状に形成され、その長手方向の両端部が溝底方向に膨出した膨出部(2)を有する一対の第１プレート(3)と第２プレート(4)とを有し、両プレート(3)(4)が互いに嵌着すると共に、それらの間にインナーフィン(9)が介装されて偏平チューブ(5)を構成し、多数の偏平チューブ(5)がその厚み方向に積層されて、熱交換器コア(6)が形成され、そのコア(6)の外周にケーシング(11)が被嵌され、各部品が前記偏平チューブ(5)の厚み方向に圧接状態で、その各部品の接触部間が一体にろう付けされるヘッダプレートレス用熱交換器の偏平チューブにおいて、
その第１プレート(3)は、その両側壁(1)の先端縁部がその板厚分だけ内側に段付き状に形成された段付き部(7)を有し、
第２プレート(4)は、その長手方向の両端部を残して、その両側壁(1)の先端縁部が溝底側に僅かに欠切された細長い欠切縁(8)を有し、
第１プレート(3)の一対の前記段付き部(7)に、第２プレート(4)の両側壁(1)が嵌着して、その第２プレート(4)の長手方向の両端部の両側壁(1)先端のみが、溝底に平行な前記段付き部(7)の段面(7a)に接し、前記欠切縁(8)はその段面(7a)に接しないように構成されたことを特徴とするヘッダプレートレス用熱交換器の偏平チューブである。 The present invention according to claim 1 is formed in a flat groove shape having a pair of side walls (1) on both sides in the width direction, and has a bulging portion in which both end portions in the longitudinal direction bulge in the groove bottom direction ( 2) having a pair of first plate (3) and second plate (4), both plates (3) and (4) are fitted together, and an inner fin (9) is interposed between them. To form a flat tube (5), a large number of flat tubes (5) are stacked in the thickness direction to form a heat exchanger core (6), and a casing (11 In the flat tube of the heat exchanger for header plateless in which each part is pressed in the thickness direction of the flat tube (5) and the contact parts of the respective parts are brazed together.
The first plate (3) has a stepped portion (7) in which the front edge of the both side walls (1) is stepped inward by the thickness of the plate,
The second plate (4) has an elongated notch edge (8) in which the end edges of both side walls (1) are slightly notched on the groove bottom side, leaving both ends in the longitudinal direction.
Both side walls (1) of the second plate (4) are fitted to the pair of stepped portions (7) of the first plate (3), and the two end plates in the longitudinal direction of the second plate (4) are fitted. Only the ends of the side walls (1) are in contact with the step surface (7a) of the stepped portion (7) parallel to the groove bottom, and the notched edge (8) is configured not to contact the step surface (7a). It is the flat tube of the heat exchanger for header plateless characterized by being made.

請求項２に記載の本発明は、請求項１において、
第２プレート(4)の側壁(1)の長手方向の両端部の下端縁は、加工機械により切断され、その内周縁側に、切断の際に生じる切断縁にダレ部(14)を有し、前記第１プレート(3)の前記段面(7a)と側壁(1)の先端側との角が断面弧状に湾曲した弧状部(15)を有し、その弧状部(15)に前記ダレ部(14)が接するように構成されたヘッダプレートレス用熱交換器の偏平チューブである。 The present invention according to claim 2 is the method according to claim 1,
The lower end edge of both ends in the longitudinal direction of the side wall (1) of the second plate (4) is cut by a processing machine, and has a sag portion (14) at the cutting edge generated at the time of cutting on the inner peripheral side. The first plate (3) has an arcuate portion (15) in which an angle between the step surface (7a) and the front end side of the side wall (1) is curved in a cross-sectional arc shape, and the sagging portion (15) includes the sagging portion (15). It is a flat tube of a header plateless heat exchanger configured so that the portion (14) contacts.

本発明の偏平チューブは、第１プレート３の段付き部７に第２プレート４の側壁１が嵌着したとき、その長手方向両端の先端のみが段付き部７の面７aに接触し、欠切縁８はそれに接触しないように構成したから、各第１プレート３、第２プレート４内面とインナーフィン９とを均一に接触させた状態で熱交換器コア６のろう付けを行うことができる。これは、両プレート３，４を厚み方向に圧縮したとき、その中間部が自由に押圧変形し、各プレート内面とインナーフィン外面とを接触することができるからである。また、各偏平チューブの長手方向両端部の膨出部２における厚み方向の寸法を正確に確保させ、ケーシングとコアとの接触部を気密にすることができる。それにより性能の高いヘッダプレートレス用熱交換器を提供できる。
請求項２に記載のように、第２プレート４の側壁の長手方向両端部の下端縁にダレ部14を形成し、そのダレ部14を第１プレート３の段付き部７の弧状部15に接するように構成した場合には、その嵌着部が密着し、ろう付けの信頼性が向上する。 In the flat tube of the present invention, when the side wall 1 of the second plate 4 is fitted to the stepped portion 7 of the first plate 3, only the tips at both ends in the longitudinal direction are in contact with the surface 7 a of the stepped portion 7. Since the cutting edge 8 is configured not to contact it, the heat exchanger core 6 can be brazed in a state where the inner surfaces of the first plate 3 and the second plate 4 and the inner fin 9 are uniformly contacted. . This is because when the plates 3 and 4 are compressed in the thickness direction, the intermediate portion thereof is freely pressed and deformed so that the inner surface of each plate and the outer surface of the inner fin can be brought into contact with each other. Moreover, the dimension of the thickness direction in the bulging part 2 of the longitudinal direction both ends of each flat tube can be ensured correctly, and the contact part of a casing and a core can be made airtight. Thereby, a high performance header plateless heat exchanger can be provided.
As described in claim 2, a sag portion 14 is formed at the lower end edge of both end portions in the longitudinal direction of the side wall of the second plate 4, and the sag portion 14 is formed on the arcuate portion 15 of the stepped portion 7 of the first plate 3. When configured to contact, the fitting portion comes into close contact, and the brazing reliability is improved.

本発明の偏平チューブの分解斜視図。The disassembled perspective view of the flat tube of this invention. 同偏平チューブの要部正面図。The principal part front view of the flat tube. 図２のIII−III矢視断面図およびそのＢ部拡大図。III-III arrow sectional drawing of FIG. 2, and the B section enlarged view. 図２のIV−IV矢視断面図。FIG. 4 is a cross-sectional view taken along arrow IV-IV in FIG. 2. 同偏平チューブを用いた熱交換器であって、ケーシング11およびヘッダ本体12のみを断面にしたもの。A heat exchanger using the flat tube, in which only the casing 11 and the header body 12 are cross-sectioned. 同熱交換器コア６の斜視略図。A perspective schematic view of the heat exchanger core 6. 同偏平チューブ５に用いる第２プレート４の側壁１における内周縁部の断面説明図。Cross-sectional explanatory drawing of the inner periphery part in the side wall 1 of the 2nd plate 4 used for the flat tube 5. FIG.

次に、図面に基づいて本発明の実施の形態につき説明する。
このヘッダレス用熱交換器の偏平チューブ５は、図１および図４に示す如く、インナーフィン９を介装した一対の第１プレート３と第２プレート４で形成されている。第１プレート３、第２プレート４のそれぞれは、一対の側壁１を有する偏平な溝状に形成され、その長手方向両端部が溝底方向に膨出した膨出部２を有する。 Next, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 4, the flat tube 5 of the headerless heat exchanger is formed of a pair of first plate 3 and second plate 4 with inner fins 9 interposed therebetween. Each of the first plate 3 and the second plate 4 is formed in a flat groove shape having a pair of side walls 1, and has a bulging portion 2 whose both longitudinal end portions bulge in the groove bottom direction.

その第１プレート３は、その両側壁１の先端縁部がその板厚分だけ内側に段つき状に形成された段付き部７を有する。第２プレート４は、その長手方向両端部を残して、その両側壁１の先端縁部が溝底側に僅かに欠切された細長い欠切縁８を有する。この欠切の高さは一例として0.1ｍｍ〜0.5ｍｍ程度とすることができる。そして、第１プレート３の段付き部７に第２プレート４の両側壁１が嵌着する。このとき、第２プレート４の長手方向両端部の両側壁１先端のみが段付き部７の水平な面７aに接する。なお、この面７aは、第１プレート３の溝底に平行な段付き部７の面である。そして、第２プレート４の欠切縁８はその面７aには接しない。   The first plate 3 has a stepped portion 7 in which the tip edge portions of the side walls 1 are formed in a stepped shape on the inner side by the thickness of the plate. The 2nd plate 4 has the elongate notch edge 8 in which the front-end edge part of the both-sides wall 1 was notched slightly on the groove bottom side, leaving the longitudinal direction both ends. As an example, the height of this notch can be set to about 0.1 mm to 0.5 mm. Then, both side walls 1 of the second plate 4 are fitted to the stepped portion 7 of the first plate 3. At this time, only the tips of both side walls 1 at both ends in the longitudinal direction of the second plate 4 are in contact with the horizontal surface 7 a of the stepped portion 7. The surface 7 a is a surface of the stepped portion 7 parallel to the groove bottom of the first plate 3. The notched edge 8 of the second plate 4 does not contact the surface 7a.

なお、この例では図３（Ｂ）に示す如く、第２プレート４の側壁１の先端の内側コーナー部にはダレ部14が形成されている。このダレ部14は図７に示す如く、プレス機械等により切断したとき、その縁部が断面孤状に変形する部分を利用している。それに当接する第１プレート３の段付き部７の面７aと側壁１の先端側との角は、それに整合する断面孤状に湾曲した弧状部15を有する。そして、ダレ部14に弧状部15が接する。このように構成することにより、加圧に伴い第２プレート４と第１プレート３との嵌着部を確実に密着させ、気密性を向上させる。   In this example, as shown in FIG. 3B, a sag portion 14 is formed at the inner corner portion at the tip of the side wall 1 of the second plate 4. As shown in FIG. 7, the sag portion 14 utilizes a portion whose edge is deformed in a cross-sectional shape when cut by a press machine or the like. An angle between the surface 7a of the stepped portion 7 of the first plate 3 and the front end side of the side wall 1 that abuts on the first plate 3 has an arcuate portion 15 that is curved in an arcuate cross section. The arcuate portion 15 is in contact with the sag portion 14. By comprising in this way, the fitting part of the 2nd plate 4 and the 1st plate 3 is made to closely_contact | adhere with pressurization, and airtightness is improved.

また、偏平チューブ５内に介装されるインナーフィン９は波形に形成されたものが用いられる。そして、そのインナーフィン９が内装された状態で多数の偏平チューブ５が厚み方向に積層され、図５および図６の如く熱交換器コア６を構成する。そして、その熱交換器コア６外周にケーシング11が被嵌される。このケーシング11は一例として一対の溝状材からなり、積層方向の中間部で互いに嵌着するものを利用することができる。この溝状材も、偏平チューブ同様に一方の両側壁に段付き部を形成し、他方の溝状材の両側壁の中間部に欠切部を設け、その両端部のみが段部に接触するようにすることができる。   Further, the inner fin 9 interposed in the flat tube 5 is formed in a waveform. And many flat tubes 5 are laminated | stacked in the thickness direction in the state by which the inner fin 9 was equipped, and the heat exchanger core 6 is comprised like FIG. 5 and FIG. A casing 11 is fitted on the outer periphery of the heat exchanger core 6. As an example, the casing 11 may be formed of a pair of groove-like materials and fitted to each other at an intermediate portion in the stacking direction. Similarly to the flat tube, this groove-like material also has a stepped portion on one side wall, and a notch is provided in the middle of the both side walls of the other groove-like material, and only both end portions are in contact with the stepped portion. Can be.

ケーシング11の長手方向両端部には、冷却水出入口13が形成され、そこに図示しない冷却水パイプの開口が接続される。また、熱交換器コア６の長手方向両端には一対のヘッダ本体12が配置される。このように組立てられた熱交換器は、偏平チューブ５の積層方向に圧力を加えた状態で、炉内でろう付け固定される。そのために、各部品の互いに接触する一方には、ろう材が被覆されたものが用いられ、あるいはそれらの間にろう材が介装される。   A cooling water inlet / outlet port 13 is formed at both ends in the longitudinal direction of the casing 11, and an opening of a cooling water pipe (not shown) is connected thereto. In addition, a pair of header bodies 12 are disposed at both longitudinal ends of the heat exchanger core 6. The heat exchanger assembled in this manner is brazed and fixed in the furnace in a state where pressure is applied in the stacking direction of the flat tubes 5. For this purpose, one of the parts that are in contact with each other is either coated with a brazing material, or a brazing material is interposed between them.

なお、各第１プレート３、第２プレート４の長手方向中間部には多数のディンプル10が突設されている。このディンプル10の高さは、各プレート両端の膨出部２の膨出高さと同一である。そして、ろう付け時において、各第１プレート３、第２プレート４はその長手方向両端部の側壁１先端のみが互いに接触する。すなわち、第２プレート４の側壁１先端と第１プレート３の側壁１の段付き部７とがその長手方向の両端部のみで接触する。   Note that a large number of dimples 10 project from the longitudinal middle portions of the first plate 3 and the second plate 4. The height of the dimple 10 is the same as the bulging height of the bulging portions 2 at both ends of each plate. And at the time of brazing, each 1st plate 3 and the 2nd plate 4 mutually contact only the front-end | tip of the side wall 1 of the longitudinal direction both ends. That is, the tip of the side wall 1 of the second plate 4 and the stepped portion 7 of the side wall 1 of the first plate 3 are in contact with each other only at both ends in the longitudinal direction.

これにより、大部分の中間部は上下方向に圧縮可能な状態になり、第１プレート３、第２プレート４内面とインナーフィン９の外面とを完全に接触させることができる。このとき、ディンプル10どうしは、図５に示す如く接触し、外力を互いに厚み方向に伝えることができる。   As a result, most of the intermediate portion can be compressed in the vertical direction, and the inner surfaces of the first plate 3 and the second plate 4 and the outer surface of the inner fin 9 can be brought into full contact. At this time, the dimples 10 are in contact with each other as shown in FIG. 5, and can transmit external forces to each other in the thickness direction.

このようにしてなるヘッダレス型熱交換器は、図５において一方のヘッダ本体12に高温の排ガスが導かれ、それが各偏平チューブ５内を流通して他方のヘッダ本体12に導かれる。また、ケーシング11の一方の冷却水出入口13から冷却水が流入し、それが各偏平チューブ５外周を流通して他方の冷却水出入口13から外部へ導かれる。このとき冷却水と排ガスとの間に熱交換が行われるものである。   In the headerless heat exchanger thus configured, high temperature exhaust gas is guided to one header body 12 in FIG. 5, which is circulated through each flat tube 5 and guided to the other header body 12. Further, the cooling water flows from one cooling water inlet / outlet 13 of the casing 11, and flows through the outer periphery of each flat tube 5 and is guided to the outside from the other cooling water inlet / outlet 13. At this time, heat exchange is performed between the cooling water and the exhaust gas.

１ 側壁
２ 膨出部
３ 第１プレート
４ 第２プレート
５ 偏平チューブ
６ 熱交換器コア
７ 段付き部
7a 面 DESCRIPTION OF SYMBOLS 1 Side wall 2 Expanding part 3 1st plate 4 2nd plate 5 Flat tube 6 Heat exchanger core 7 Stepped part
7a side

８ 欠切縁
９ インナーフィン
10 ディンプル
11 ケーシング
12 ヘッダ本体
13 冷却水出入口
14 ダレ部
15 弧状部 8 Notched edge 9 Inner fin
10 dimples
11 Casing
12 Header body
13 Cooling water inlet / outlet
14 Dare section
15 Arc

Claims (2)

それぞれ幅方向の両側に一対の側壁(1)を有する偏平な溝状に形成され、その長手方向の両端部が溝底方向に膨出した膨出部(2)を有する一対の第１プレート(3)と第２プレート(4)とを有し、両プレート(3)(4)が互いに嵌着すると共に、それらの間にインナーフィン(9)が介装されて偏平チューブ(5)を構成し、多数の偏平チューブ(5)がその厚み方向に積層されて、熱交換器コア(6)が形成され、そのコア(6)の外周にケーシング(11)が被嵌され、各部品が前記偏平チューブ(5)の厚み方向に圧接状態で、その各部品の接触部間が一体にろう付けされるヘッダプレートレス用熱交換器の偏平チューブにおいて、
その第１プレート(3)は、その両側壁(1)の先端縁部がその板厚分だけ内側に段付き状に形成された段付き部(7)を有し、
第２プレート(4)は、その長手方向の両端部を残して、その両側壁(1)の先端縁部が溝底側に僅かに欠切された細長い欠切縁(8)を有し、
第１プレート(3)の一対の前記段付き部(7)に、第２プレート(4)の両側壁(1)が嵌着して、その第２プレート(4)の長手方向の両端部の両側壁(1)先端のみが、溝底に平行な前記段付き部(7)の段面(7a)に接し、前記欠切縁(8)はその段面(7a)に接しないように構成されたことを特徴とするヘッダプレートレス用熱交換器の偏平チューブ。 A pair of first plates each having a flat groove shape having a pair of side walls (1) on both sides in the width direction, and having bulging portions (2) bulging in the longitudinal direction at both ends thereof. 3) and a second plate (4), both plates (3) and (4) are fitted together, and an inner fin (9) is interposed between them to form a flat tube (5) Then, a number of flat tubes (5) are laminated in the thickness direction to form a heat exchanger core (6), and a casing (11) is fitted on the outer periphery of the core (6), and each component is In the flat tube of the heat exchanger for header plateless in which the contact parts of the respective parts are brazed together in the pressure contact state in the thickness direction of the flat tube (5),
The first plate (3) has a stepped portion (7) in which the front edge of the both side walls (1) is stepped inward by the thickness of the plate,
The second plate (4) has an elongated notch edge (8) in which the end edges of both side walls (1) are slightly notched on the groove bottom side, leaving both ends in the longitudinal direction.
Both side walls (1) of the second plate (4) are fitted to the pair of stepped portions (7) of the first plate (3), and the two end plates in the longitudinal direction of the second plate (4) are fitted. Only the ends of the side walls (1) are in contact with the step surface (7a) of the stepped portion (7) parallel to the groove bottom, and the notched edge (8) is configured not to contact the step surface (7a). A flat tube for a header plateless heat exchanger. 請求項１において、
第２プレート(4)の側壁(1)の長手方向の両端部の下端縁は、加工機械により切断され、その内周縁側に、切断の際に生じる切断縁にダレ部(14)を有し、前記第１プレート(3)の前記段面(7a)と側壁(1)の先端側との角が断面弧状に湾曲した弧状部(15)を有し、その弧状部(15)に前記ダレ部(14)が接するように構成されたヘッダプレートレス用熱交換器の偏平チューブ。 In claim 1,
The lower end edge of both ends in the longitudinal direction of the side wall (1) of the second plate (4) is cut by a processing machine, and has a sag portion (14) at the cutting edge generated at the time of cutting on the inner peripheral side. The first plate (3) has an arcuate portion (15) whose corner between the stepped surface (7a) and the front end side of the side wall (1) is curved in a cross-section arc shape. The flat tube of the heat exchanger for header plateless comprised so that a part (14) may contact | connect.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014055711A (en) * 2012-09-12 2014-03-27 T Rad Co Ltd Tank coupling structure for header-plate-less heat exchanger
WO2016017788A1 (en) * 2014-07-30 2016-02-04 株式会社ティラド Flat tube for header-plate-less heat exchanger
JP2016161136A (en) * 2015-02-26 2016-09-05 株式会社ティラド Flat tube and heat exchanger
US20160320139A1 (en) * 2013-12-20 2016-11-03 T.Rad Co., Ltd. Header plateless heat exchanger
US10006723B2 (en) 2014-03-07 2018-06-26 T.Rad Co., Ltd. Seal structure for tank

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JP2004028469A (en) * 2002-06-26 2004-01-29 Toyo Radiator Co Ltd Heat exchanger core
WO2006102736A1 (en) * 2005-04-01 2006-10-05 Dana Canada Corporation Stacked-tube heat exchanger

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Publication number Priority date Publication date Assignee Title
JP2004028469A (en) * 2002-06-26 2004-01-29 Toyo Radiator Co Ltd Heat exchanger core
WO2006102736A1 (en) * 2005-04-01 2006-10-05 Dana Canada Corporation Stacked-tube heat exchanger

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014055711A (en) * 2012-09-12 2014-03-27 T Rad Co Ltd Tank coupling structure for header-plate-less heat exchanger
US20160320139A1 (en) * 2013-12-20 2016-11-03 T.Rad Co., Ltd. Header plateless heat exchanger
US9903662B2 (en) * 2013-12-20 2018-02-27 T.Rad Co., Ltd. Header plateless heat exchanger
US10006723B2 (en) 2014-03-07 2018-06-26 T.Rad Co., Ltd. Seal structure for tank
WO2016017788A1 (en) * 2014-07-30 2016-02-04 株式会社ティラド Flat tube for header-plate-less heat exchanger
US10260821B2 (en) 2014-07-30 2019-04-16 T.Rad Co., Ltd. Flat tube for header-plateless heat exchanger
JP2016161136A (en) * 2015-02-26 2016-09-05 株式会社ティラド Flat tube and heat exchanger

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