JP2005083700A - Heat exchange tube - Google Patents

Heat exchange tube Download PDF

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JP2005083700A
JP2005083700A JP2003318230A JP2003318230A JP2005083700A JP 2005083700 A JP2005083700 A JP 2005083700A JP 2003318230 A JP2003318230 A JP 2003318230A JP 2003318230 A JP2003318230 A JP 2003318230A JP 2005083700 A JP2005083700 A JP 2005083700A
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heat exchange
width direction
exchange tube
end part
end portion
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Soichi Kato
宗一 加藤
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Valeo Thermal Systems Japan Corp
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Zexel Valeo Climate Control Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a further rationally constituted heat exchange tube. <P>SOLUTION: This flat heat exchange tube is provided with a flow passage 210 by molding a belt-like raw material. An engaging part 240 formed by mutually engaging and brazing both end parts in the width direction of the raw material, is arranged in one end part in the width direction of the tube. The one end part in the width direction of the raw material is formed into a first end part 241 for rolling up the other end part. The other end part of the raw material is formed into a second end part 242 rolled in the first end part. Mutually coincident curved surface parts 241a and 242a are respectively arranged in the first end part and the second end part. The second end part is provided with a plane part 242b opposed to an end surface 241b of the raw material on the first end part side. The end of the curved surface part of the first end part continues with an end surface of the raw material. The end of the curved surface part of the second end part continues with the plane part of the second end part. The end surface of the raw material and the plane part of the second end part, are constituted so as to vertically cross with the axis L in the width direction of the tube. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、帯状の素材を成形して流路を設けた偏平型のチューブであって、当該チューブに伝わる熱にて流路を流通する媒体の熱交換をする熱交換チューブに関する。   The present invention relates to a flat tube having a flow path formed by forming a strip-shaped material, and relates to a heat exchange tube for exchanging heat of a medium flowing through the flow path by heat transmitted to the tube.

一般に、媒体を流通するチューブを備え、そのチューブに伝わる熱にて媒体の熱交換をする熱交換器が知られている。また、このような熱交換器を構成するチューブとしては、帯状の素材を成形して流路を設けた偏平型のものが知られている。この種の熱交換チューブは、特許文献１乃至１２にも開示されている。
特開昭６１−６６０９１号公報 実開昭６２−８５７６号公報 実開昭６２−１４２４４０号公報 実開昭６３−１３４２７３号公報 実開昭６３−１５０７２１号公報 実開昭６３−１７９４７２号公報 実開平２−１５５９号公報 特開平４−３３２３９２号公報 特開平４−８６４８９号公報 特開平９−２７３８８３号公報 特開平１０−２７４４８９号公報 特開２００２−１４３９５９号公報 2. Description of the Related Art Generally, a heat exchanger that includes a tube that circulates a medium and performs heat exchange of the medium by heat transmitted to the tube is known. Further, as a tube constituting such a heat exchanger, a flat tube having a channel formed by forming a strip-shaped material is known. This type of heat exchange tube is also disclosed in Patent Documents 1 to 12.
JP-A-61-66091 Japanese Utility Model Publication No. 62-8576 Japanese Utility Model Publication No. 62-142440 Japanese Utility Model Publication No. 63-134273 Japanese Utility Model Publication No. 63-150721 Japanese Utility Model Publication No. 63-179472 Japanese Utility Model Publication No.2-1559 JP-A-4-332392 JP-A-4-86489 Japanese Patent Laid-Open No. 9-238883 Japanese Patent Laid-Open No. 10-274489 JP 2002-143959 A

さて近年、熱交換チューブは、熱交換器の性能をより向上するべく小型化且つ精密化される傾向にあり、その性能及び製造性を向上するにあたっては、細部における微妙な構造の重要性がますます高まっている。本発明は、かかる事情に鑑みてなされたものであり、その目的は、より合理的に構成された熱交換チューブを提供することである。   Nowadays, heat exchange tubes tend to be miniaturized and refined to further improve the performance of heat exchangers, and in order to improve their performance and manufacturability, the importance of delicate structures in details is increasing. Increasingly. This invention is made | formed in view of this situation, The objective is to provide the heat exchange tube comprised more rationally.

本願第１請求項に記載した発明は、帯状の素材を成形して流路を設けた偏平型のチューブであって、当該チューブに伝わる熱にて前記流路を流通する媒体の熱交換をする熱交換チューブにおいて、当該チューブの幅方向の一方の端部には、前記素材の幅方向の両端部を互いに係合し且つろう付けしてなる係合部を設け、前記素材の幅方向の一方の端部は、他方の端部を巻き込む第１端部とするとともに、前記素材の他方の端部は、前記第１端部に巻き込まれる第２端部とし、前記第１端部及び前記第２端部には、互いに合致する曲面部をそれぞれを設け、前記第２端部には、前記第１端部側の前記素材の端面と対向する平面部を設け、前記第１端部の曲面部の端は、前記素材の端面と連続しており、且つ前記第２端部の曲面部の端は、前記第２端部の平面部と連続しており、前記素材の端面及び前記第２端部の平面部は、当該チューブの幅方向の軸と垂直に交差する構成の熱交換チューブである。   The invention described in claim 1 of the present application is a flat tube having a flow path formed by forming a strip-shaped material, and heat exchange of the medium flowing through the flow path is performed by heat transmitted to the tube. In the heat exchange tube, at one end portion in the width direction of the tube, an engagement portion formed by engaging and brazing both end portions in the width direction of the material is provided, and one end in the width direction of the material is provided. The other end portion of the material is a second end portion that is wound around the first end portion, and the first end portion and the first end portion are wound around the first end portion. Two end portions are respectively provided with curved surface portions that match each other, and the second end portion is provided with a flat portion that faces the end surface of the material on the first end portion side, and the curved surface of the first end portion is provided. The end of the portion is continuous with the end surface of the material, and the end of the curved portion of the second end portion is the first end. Is continuous with the planar portion of the end portion, the planar portion of the end surface of the material and the second end portion is a heat exchanger tube arrangement perpendicularly intersects the width direction of the tube axis.

本願第２請求項に記載した発明は、請求項１において、前記第２端部側の前記素材の端面は、前記流路の内部空間に向けられており、前記素材の成形時には、前記第２端部側の前記素材の端面の位置をずらすことにより、前記素材の幅方向の寸法誤差を解消するようにした構成の熱交換チューブである。   The invention described in claim 2 of the present application is that, in claim 1, an end surface of the material on the second end side is directed to an internal space of the flow path, and the second material is formed when the material is molded. The heat exchange tube has a configuration in which a dimensional error in the width direction of the material is eliminated by shifting the position of the end surface of the material on the end side.

本願第３請求項に記載した発明は、請求項１又は２において、前記第２端部は、前記素材を折り重ねてなる構成の熱交換チューブである。   The invention described in claim 3 of the present application is the heat exchange tube according to claim 1 or 2, wherein the second end portion is formed by folding the material.

本発明によれば、より合理的に構成された熱交換チューブを得ることができる。   According to the present invention, a more reasonably configured heat exchange tube can be obtained.

以下に、本発明の実施例を図面に基づいて説明する。図１に示す熱交換器１は、自動車に搭載される車内空調用冷凍サイクルの放熱器である。この熱交換器１は、熱交換チューブ２００とフィン３００とを交互に積層してなるコア１００と、各熱交換チューブ２００の長手方向両端部をそれぞれ連通接続した一対のタンク４００とを備えたものである。コア１００の上下側部には、補強部材たるサイドプレート５００を設けており、各サイドプレート５００の長手方向両端部は、それぞれタンク４００に支持されている。また、タンク４００の要所には媒体（つまり冷凍サイクルを循環する冷媒）の入口部４０１及び出口部４０２が設けられており、入口部４０１から流入した媒体は、コア１００に伝わる熱にて熱交換をしつつ熱交換チューブ２００を流通し、出口部４０２から流出する構成となっている。   Embodiments of the present invention will be described below with reference to the drawings. A heat exchanger 1 shown in FIG. 1 is a radiator of a refrigeration cycle for in-vehicle air conditioning that is mounted on an automobile. This heat exchanger 1 includes a core 100 formed by alternately stacking heat exchange tubes 200 and fins 300, and a pair of tanks 400 in which both longitudinal ends of each heat exchange tube 200 are connected in communication. It is. Side plates 500 as reinforcing members are provided on the upper and lower sides of the core 100, and both end portions in the longitudinal direction of the side plates 500 are supported by the tank 400. In addition, an inlet portion 401 and an outlet portion 402 of a medium (that is, a refrigerant circulating in the refrigeration cycle) are provided at important points of the tank 400, and the medium flowing in from the inlet portion 401 is heated by heat transmitted to the core 100. The heat exchange tube 200 is circulated while exchanging, and flows out from the outlet portion 402.

熱交換チューブ２００、フィン３００、タンク４００、入口部４０１、出口部４０２、及びサイドプレート５００は、それぞれアルミニウム又はアルミニウム合金製の部材からなり、ジグを用いて一体に組み立てるとともに、その組み立て体を炉中で過熱処理して一体にろう付けしている。また、このようなろう付けに際し、各部材の要所にはろう材及びフラックスが設けられる。   The heat exchange tube 200, the fin 300, the tank 400, the inlet portion 401, the outlet portion 402, and the side plate 500 are each made of a member made of aluminum or an aluminum alloy, and are assembled together using a jig, and the assembled body is a furnace. It is brazed together by overheating. In such brazing, a brazing material and a flux are provided at the main points of each member.

図２及び図３に示すように、本例の熱交換チューブ２００は、帯状の素材をロール成形して流路２１０を設けた偏平型のものである。流路２１０を流通する媒体の熱は、熱交換チューブ２００から外気又はフィン３００に伝わることによって放熱される。   As shown in FIGS. 2 and 3, the heat exchange tube 200 of this example is a flat type in which a flow path 210 is provided by roll-forming a band-shaped material. The heat of the medium flowing through the flow path 210 is dissipated by being transmitted from the heat exchange tube 200 to the outside air or the fins 300.

ロール成形においては、順次、素材の要所にビード２２０を設けるとともに素材の幅方向の両端部を所定の形状に成形し、素材の要所を湾曲してこれを２つ折りとし、素材の幅方向の両端部を互いに係合する。つまり、熱交換チューブ２００の幅方向の一方の端部には、素材の幅方向の両端部を互いに係合し且つろう付けしてなる係合部２４０が設けられる。また、熱交換チューブ２００の幅方向の他方の端部には、素材を湾曲してなる湾曲部２３０が設けられる。熱交換チューブ２００の内部には、ビード２２０にて区画された複数の流路２１０が設けられる。尚、本例の場合、係合部２４０のろう付けは、前述した炉中ろう付けにおいて、タンク４００側から毛管現象によって浸透するろう材によってなされる構成となっている。   In roll forming, beads 220 are sequentially provided at the main parts of the material, both ends in the width direction of the material are formed into a predetermined shape, the main parts of the material are bent and folded into two, and the width direction of the material The both ends of the are engaged with each other. That is, at one end portion in the width direction of the heat exchange tube 200, an engaging portion 240 is provided by engaging and brazing both end portions in the width direction of the material. Further, a bending portion 230 formed by bending the material is provided at the other end portion in the width direction of the heat exchange tube 200. A plurality of flow paths 210 partitioned by beads 220 are provided inside the heat exchange tube 200. In the case of this example, the engaging portion 240 is brazed by a brazing material that penetrates from the tank 400 side by capillary action in the above-described brazing in the furnace.

以下の説明においては、素材の幅方向の一方の端部を第１端部２４１とし、他方の端部を第２端部２４２とする。第１端部２４１は、第２端部２４２を巻き込むものであり、第２端部２４２は、第１端部２４１に巻き込まれるものである。   In the following description, one end in the width direction of the material is a first end 241 and the other end is a second end 242. The first end 241 is to wind the second end 242, and the second end 242 is to be wound on the first end 241.

第１端部２４１及び第２端部２４２には、互いに合致する曲面部２４１ａ，２４２ａそれぞれを設けている。各曲面部２４１ａ，２４２ａは、流路２１０の内側から外側に向って湾曲している。   The first end portion 241 and the second end portion 242 are respectively provided with curved surface portions 241a and 242a that match each other. Each curved surface portion 241a, 242a is curved from the inside to the outside of the flow path 210.

また、第２端部２４２には、第１端部２４１側の素材の端面２４１ｂと対向する平面部２４２ｂを設けている。   The second end portion 242 is provided with a flat portion 242b facing the end surface 241b of the material on the first end portion 241 side.

更に、第１端部２４１の曲面部２４１ａの端は、素材の端面２４１ｂと連続しており、且つ第２端部２４２の曲面部２４２ａの端は、第２端部２４２の平面部２４２ｂと連続している。   Furthermore, the end of the curved surface portion 241 a of the first end portion 241 is continuous with the end surface 241 b of the material, and the end of the curved surface portion 242 a of the second end portion 242 is continuous with the flat surface portion 242 b of the second end portion 242. doing.

そして、第１端部２４１における素材の端面２４１ｂ及び第２端部２４２の平面部２４２ｂは、熱交換チューブ２００の幅方向の軸Ｌと垂直に交差する。   The end surface 241 b of the material at the first end 241 and the flat surface 242 b of the second end 242 intersect perpendicularly with the axis L in the width direction of the heat exchange tube 200.

係合部２４０においては、第１端部２４１の曲面部２４１ａと第２端部２４２の曲面部２４２ａ、及び第１端部２４１における素材の端面２４１ｂと第２端部２４２の平面部２４２ｂとをろう付けする。   In the engaging part 240, the curved surface part 241 a and the curved surface part 242 a of the second end part 242 of the first end part 241, and the end face 241 b of the material and the flat part 242 b of the second end part 242 of the first end part 241 are formed. Braze.

尚、第２端部２４２側の素材の端面２４２ｃは、流路２１０の内部空間に向けられており、素材の成形時には、第２端部２４２側の素材の端面２４２ｃの位置ずらすことにより（図中の白矢印方向）、素材の幅方向の寸法誤差を解消するようにしている。   The end surface 242c of the material on the second end portion 242 side is directed to the internal space of the flow path 210, and the material end surface 242c on the second end portion 242 side is displaced by shifting the position of the material (see FIG. (In the direction of the white arrow in the middle), the dimensional error in the width direction of the material is eliminated.

このような構成によると、成形性及びろう付け性に優れた熱交換チューブ２００を得ることができる。仮に、図４に示すように、第１端部２４１における素材の端面２４１ｂが、熱交換チューブ２００の幅方向の軸Ｌと非垂直に交差する場合は、第２端部２４２を巻き込む量が減少するとともに、第１端部２４１における素材の端面２４１ｂと第２端部２４２の平面部２４２ｂとの間に多少の間隔が生じる。つまり、第２端部２４２を巻き込む量の減少によれば、第１端部２４１と第２端部２４２との係合状態が緩慢になるという心配がある。また、素材の端面２４１ｂと平面部２４２ｂとの間に間隔が生じると、それらのろう付けの信頼性が低下する。しかるに本例によれば、そのような心配はない。更に、図５に示すように、第１端部２４１の曲面部２４１ａの端と素材の端面２４１ｂとの間、並びに、第２端部２４２の曲面部２４２ａの端と第２端部２４２の平面部２４２ｂとの間にそれぞれ平坦部２４１ｃ，２４２ｄを設けると、前述したロール成形における第１端部２４１と第２端部２４２との係合がやや困難になるところ、本例によれば、第１端部２４１の曲面部２４１ａの端が素材の端面２４１ｂと連続し、且つ第２端部２４２の曲面部２４２ａの端が第２端部２４２の平面部２４２ｂと連続しているので、それらは比較的容易に係合することが可能である。   According to such a structure, the heat exchange tube 200 excellent in moldability and brazing property can be obtained. As shown in FIG. 4, when the end surface 241b of the material at the first end 241 intersects the axis L in the width direction of the heat exchange tube 200 non-perpendicularly, the amount of the second end 242 is reduced. At the same time, there is a slight gap between the end surface 241b of the material at the first end 241 and the flat surface 242b of the second end 242. That is, there is a concern that the engagement state between the first end portion 241 and the second end portion 242 becomes slack when the amount of the second end portion 242 is reduced. Moreover, if a space | interval arises between the end surface 241b and the plane part 242b of a raw material, those brazing reliability will fall. However, according to this example, there is no such worry. Furthermore, as shown in FIG. 5, the plane between the end of the curved surface portion 241 a of the first end portion 241 and the end surface 241 b of the material, and the plane of the curved surface portion 242 a of the second end portion 242 and the plane of the second end portion 242. When the flat portions 241c and 242d are provided between the portion 242b and the first end portion 241 and the second end portion 242 in the above-described roll forming, respectively, the engagement between the first end portion 241 and the second end portion 242 becomes somewhat difficult. Since the end of the curved surface portion 241a of the first end portion 241 is continuous with the end surface 241b of the material, and the end of the curved surface portion 242a of the second end portion 242 is continuous with the flat surface portion 242b of the second end portion 242, they are It is possible to engage relatively easily.

以上説明したように、本例の熱交換チューブ２００は、素材の幅方向の両端部を互いに係合し且つろう付けしてなる係合部２４０を合理的に構成してなるものである。特に、本例の熱交換チューブ２００は、冷凍サイクルの放熱器の構成部品であるが、その構成は、冷凍サイクルのエバポレータ、及び自動車のラジエータやヒータコア等、各種熱交換器の構成部品として応用することが可能である。また、本例の熱交換チューブ２００の構成は、特許請求の範囲に記載した技術的範囲において適宜に設計変更が可能であり、図例したものに限定されないことは勿論である。例えば図６に示すように、第２端部２４２は、素材を折り重ねて構成することも可能である。このような構成によると、係合部２４０の強度を向上することができる。また、図例の熱交換チューブ２００は、流路２１０を区画する複数のビード２２０を設けたものであるが、或いは、熱交換チューブ２００の内部にインナーフィンを設け、このインナーフィンにて流路２１０を区画するように構成することも可能である。   As described above, the heat exchange tube 200 according to the present example is configured by rationally configuring the engaging portion 240 formed by engaging and brazing both end portions in the width direction of the material. In particular, the heat exchange tube 200 of this example is a component part of a refrigeration cycle radiator, but the configuration is applied as a component part of various heat exchangers such as an evaporator of a refrigeration cycle, and a radiator or heater core of an automobile. It is possible. The configuration of the heat exchange tube 200 of the present example can be appropriately changed in design within the technical scope described in the claims, and is not limited to the illustrated example. For example, as shown in FIG. 6, the second end 242 can be configured by folding a material. According to such a configuration, the strength of the engaging portion 240 can be improved. In addition, the heat exchange tube 200 in the illustrated example is provided with a plurality of beads 220 that define the flow path 210. Alternatively, an inner fin is provided inside the heat exchange tube 200, and the flow path is formed by the inner fin. It is also possible to configure so that 210 is partitioned.

本発明の熱交換チューブは、冷凍サイクルの放熱器やエバポレータ、及び自動車のラジエータやヒータコア等、各種熱交換器の構成部品として好適に利用することができる。   The heat exchange tube of the present invention can be suitably used as a component part of various heat exchangers such as a radiator and evaporator of a refrigeration cycle, and a radiator and heater core of an automobile.

本発明の実施例に係り、熱交換器を示す正面図である（第１実施例）。It is a front view which concerns on the Example of this invention and shows a heat exchanger (1st Example). 本発明の実施例に係り、熱交換チューブを示す斜視図である。（第１実施例）It is a perspective view which concerns on the Example of this invention and shows a heat exchange tube. (First embodiment) 本発明の実施例に係り、熱交換チューブの断面形状を示す説明図、及び係合部を示す拡大図である。（第１実施例）It is explanatory drawing which shows the cross-sectional shape of a heat exchange tube, and the enlarged view which shows an engaging part concerning the Example of this invention. (First embodiment) 他の実施例に係り、係合部を示す拡大図である。It is an enlarged view which shows an engaging part concerning another Example. 他の実施例に係り、係合部を示す拡大図である。It is an enlarged view which shows an engaging part concerning another Example. 本発明の実施例に係り、熱交換チューブの断面形状を示す説明図、及び係合部を示す拡大図である。（第２実施例）It is explanatory drawing which shows the cross-sectional shape of a heat exchange tube, and the enlarged view which shows an engaging part concerning the Example of this invention. (Second embodiment)

符号の説明Explanation of symbols

１ 熱交換器
１００ コア
２００ 熱交換チューブ
２１０ 流路
２２０ ビード
２３０ 湾曲部
２４０ 係合部
２４１ 第１端部
２４１ａ 曲面部
２４１ｂ 素材の端面
２４１ｃ 平坦部
２４２ 第２端部
２４２ａ 曲面部
２４２ｂ 平面部
２４２ｃ 素材の端面
２４２ｄ 平坦部
３００ フィン
４００ タンク
４０１ 入口部
４０２ 出口部
５００ サイドプレート DESCRIPTION OF SYMBOLS 1 Heat exchanger 100 Core 200 Heat exchange tube 210 Flow path 220 Bead 230 Curved part 240 Engagement part 241 1st end part 241a Curved part 241b End face of material 241c Flat part 242 2nd end 242a Curved part 242b Plane part 242c Material End face 242d flat part 300 fin 400 tank 401 inlet part 402 outlet part 500 side plate

Claims (3)

帯状の素材を成形して流路を設けた偏平型のチューブであって、当該チューブに伝わる熱にて前記流路を流通する媒体の熱交換をする熱交換チューブにおいて、
当該チューブの幅方向の一方の端部には、前記素材の幅方向の両端部を互いに係合し且つろう付けしてなる係合部を設け、
前記素材の幅方向の一方の端部は、他方の端部を巻き込む第１端部とするとともに、前記素材の他方の端部は、前記第１端部に巻き込まれる第２端部とし、
前記第１端部及び前記第２端部には、互いに合致する曲面部をそれぞれを設け、
前記第２端部には、前記第１端部側の前記素材の端面と対向する平面部を設け、
前記第１端部の曲面部の端は、前記素材の端面と連続しており、且つ前記第２端部の曲面部の端は、前記第２端部の平面部と連続しており、
前記素材の端面及び前記第２端部の平面部は、当該チューブの幅方向の軸と垂直に交差することを特徴とする熱交換チューブ。 In a heat exchange tube that forms a strip-shaped material and is provided with a flow path, and performs heat exchange of a medium flowing through the flow path with heat transmitted to the tube,
One end of the tube in the width direction is provided with an engaging portion that engages and brazes both ends of the material in the width direction,
One end in the width direction of the material is a first end that winds the other end, and the other end of the material is a second end that is wound on the first end,
The first end portion and the second end portion are each provided with curved surface portions that match each other,
The second end portion is provided with a flat portion facing the end surface of the material on the first end portion side,
The end of the curved surface portion of the first end portion is continuous with the end surface of the material, and the end of the curved surface portion of the second end portion is continuous with the flat surface portion of the second end portion,
The heat exchange tube according to claim 1, wherein the end surface of the material and the flat surface portion of the second end portion intersect perpendicularly with an axis in the width direction of the tube. 前記第２端部側の前記素材の端面は、前記流路の内部空間に向けられており、前記素材の成形時には、前記第２端部側の前記素材の端面の位置をずらすことにより、前記素材の幅方向の寸法誤差を解消するようにしたことを特徴とする請求項１記載の熱交換チューブ。   The end surface of the material on the second end side is directed to the internal space of the flow path, and at the time of molding the material, by shifting the position of the end surface of the material on the second end side, 2. The heat exchange tube according to claim 1, wherein a dimensional error in the width direction of the material is eliminated. 前記第２端部は、前記素材を折り重ねてなることを特徴とする請求項１又は２記載の熱交換チューブ。   The heat exchange tube according to claim 1 or 2, wherein the second end portion is formed by folding the material.
JP2003318230A 2003-09-10 2003-09-10 Heat exchange tube Pending JP2005083700A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007093144A (en) * 2005-09-29 2007-04-12 Denso Corp Heat exchanging tube and heat exchanger
JP2009019799A (en) * 2007-07-11 2009-01-29 Denso Corp Heat exchanger tube
JP2009524000A (en) * 2006-01-19 2009-06-25 モーディーン・マニュファクチャリング・カンパニー Flat tube, flat tube heat exchanger, and method for manufacturing the same
JP2009229052A (en) * 2008-02-28 2009-10-08 Denso Corp Heat exchanger
JP2012102948A (en) * 2010-11-11 2012-05-31 Denso Corp Tube for heat exchanger
US8925625B2 (en) 2007-07-11 2015-01-06 Denso Corporation Heat exchanger

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007093144A (en) * 2005-09-29 2007-04-12 Denso Corp Heat exchanging tube and heat exchanger
JP2009524000A (en) * 2006-01-19 2009-06-25 モーディーン・マニュファクチャリング・カンパニー Flat tube, flat tube heat exchanger, and method for manufacturing the same
US8726508B2 (en) 2006-01-19 2014-05-20 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
JP2009019799A (en) * 2007-07-11 2009-01-29 Denso Corp Heat exchanger tube
US8925625B2 (en) 2007-07-11 2015-01-06 Denso Corporation Heat exchanger
JP2009229052A (en) * 2008-02-28 2009-10-08 Denso Corp Heat exchanger
JP2012102948A (en) * 2010-11-11 2012-05-31 Denso Corp Tube for heat exchanger
CN103201582A (en) * 2010-11-11 2013-07-10 株式会社电装 Tube for heat exchanger

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