JP2009014231A - Manufacturing method of tube for heat exchanger - Google Patents

Manufacturing method of tube for heat exchanger Download PDF

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Publication number
JP2009014231A
JP2009014231A JP2007175139A JP2007175139A JP2009014231A JP 2009014231 A JP2009014231 A JP 2009014231A JP 2007175139 A JP2007175139 A JP 2007175139A JP 2007175139 A JP2007175139 A JP 2007175139A JP 2009014231 A JP2009014231 A JP 2009014231A
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Prior art keywords
plate material
roll
heat exchanger
dimple
flow channel
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JP2007175139A
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Japanese (ja)
Inventor
Junichiro Takizawa
潤一郎 滝沢
Hirokazu Yaesawa
啓和 八重沢
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Marelli Corp
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Calsonic Kansei Corp
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Priority to JP2007175139A priority Critical patent/JP2009014231A/en
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    • 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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F28F1/422—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element with outside means integral with the tubular element and inside means integral with the tubular element

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Metal Rolling (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a tube for a heat exchanger capable of reducing set-up man-hours and manufacturing costs by in-lining from a flow channel groove forming process to a bending process. <P>SOLUTION: This manufacturing method of the tube for the heat exchanger comprises the flow channel groove forming process for delivering a plate material 1 for the tube for the heat exchanger to a rolling machine, and continuously forming a plurality of flow channel grooves 2 on one face 1a of the plate material 1 along the delivering direction by the rolling machine 7, a dimple forming process for delivering the plate material 1 after forming the flow channel grooves 2, to a dimple forming machine, and forming a plurality of dimples 4 shallower than a plate thickness of the plate material 1 on the other face 1b of the plate material 1 in the direction intersecting with the delivering direction, and a bending process for delivering the plate material 1 having the dimples 4, to a bending machine, and gradually bending the plate material 1 into two in such a manner that the flow channel grooves 2 formed on one face 1a are fitted to each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、例えば自動車の熱交換器に使用される熱交換器用チューブの製造方法に関する。   The present invention relates to a method of manufacturing a heat exchanger tube used, for example, in an automobile heat exchanger.

例えば、ＣＯ２を冷媒とする熱交換器では、これまでに使用されてきた冷媒に比べて圧力レベルが非常に高いため、これに耐え得る肉厚の熱交換器用チューブが使用されている（例えば、特許文献１等に記載）。   For example, in a heat exchanger using CO2 as a refrigerant, the pressure level is very high as compared with the refrigerants used so far, and thus a thick heat exchanger tube that can withstand this is used (for example, Described in Patent Document 1).

この種の熱交換器用チューブは、アルミニウムのクラッド材を圧延機に送り、該圧延機で圧延することにより冷媒が流れる流路溝を形成し、その後、板材を二つ折りに曲げることで形成されている。   This type of heat exchanger tube is formed by feeding an aluminum clad material to a rolling mill, rolling the rolling mill to form a flow channel through which a refrigerant flows, and then bending the plate material in half. Yes.

例えば、図１０に示すように、芯棒に巻回された板材１０１をアンコイラ１０２により圧延機１０３へと送り出し、該圧延機１０３で板材１０１の一面に冷媒が流れる流路溝を形成する。図１１（ａ）には、圧延機１０３で圧延されることにより板材１０１の一面１０１ａに複数の流路溝１０４が形成された板材１０１の断面形状を示す。流路溝１０４は、板材１０１の送り出し方向（板材の長手方向）に連続して断面略半円形状に形成される。   For example, as shown in FIG. 10, the plate material 101 wound around the core rod is sent out to the rolling mill 103 by the uncoiler 102, and the flow channel groove through which the coolant flows is formed on one surface of the plate material 101 by the rolling mill 103. FIG. 11A shows a cross-sectional shape of the plate material 101 in which a plurality of flow channel grooves 104 are formed on one surface 101 a of the plate material 101 by being rolled by the rolling mill 103. The channel groove 104 is formed in a substantially semicircular cross section continuously in the feeding direction of the plate material 101 (longitudinal direction of the plate material).

その後、折り曲げ加工機（図示は省略する）に板材１０１を送り出し、各流路溝１０４が合致するように該板材１０１を二つに折り曲げて熱交換器用チューブを形成する。図１１（ｂ）は、板材１０１を図１１（ａ）の中心位置Ｃで二つ折りに折り曲げて形成された熱交換器用チューブ１０５の断面形状を示す。
特開２００４−３４７２６７号公報 Thereafter, the plate material 101 is sent out to a bending machine (not shown), and the plate material 101 is bent in two so that each flow channel 104 matches, thereby forming a heat exchanger tube. FIG.11 (b) shows the cross-sectional shape of the tube 105 for heat exchangers formed by folding the board | plate material 101 in half at the center position C of Fig.11 (a).
JP 2004-347267 A

通常、圧延機１０３による流路溝形成工程を行った後、折り曲げ加工機による折り曲げ加工工程を連続して行ういわゆるインライ化がなされるが、板材１０１は一面１０１ａにのみ流路溝１０４が形成された異形断面形状であることから、ワーク全体で均等な延びとならず、成形品に曲がり、反りといった形状不具合が生じる。   Usually, after the flow channel forming process by the rolling mill 103 is performed, so-called inlining is performed in which the bending process by the folding machine is continuously performed. However, the plate material 101 has the flow channel 104 formed only on one surface 101a. In addition, because of the irregular cross-sectional shape, the entire workpiece does not extend evenly, and shape defects such as bending and warping occur in the molded product.

その対策として、圧延機１０３の下流側から板材１０１に張力を掛けて引っ張りながら成形することにより不均等な延びを緩和する必要がある。張力の付与は、図１０に示すように、圧延機１０３の下流に配置した巻き取り装置１０６で与える。   As a countermeasure, it is necessary to alleviate the uneven extension by forming the plate 101 while pulling it from the downstream side of the rolling mill 103. The tension is applied by a winding device 106 disposed downstream of the rolling mill 103 as shown in FIG.

このように、圧延機１０３の下流に巻き取り装置１０６を配置すると、板材１０１を巻き取り装置１０６の芯棒に巻き付けてしまうことから連続して板材を各工程に送ってそれぞれの加工を行うインライ化が出来ず、段取りが増え、結果として製造コスト増となってしまう。   As described above, when the winding device 106 is arranged downstream of the rolling mill 103, the plate material 101 is wound around the core rod of the winding device 106, so that the inline is performed by continuously sending the plate material to each process. Cannot be made, and the number of setups increases, resulting in an increase in manufacturing cost.

そこで、本発明は、流路溝形成工程から折り曲げ加工工程までをインライ化させて段取り工数の低減並びに製造コストの低減を実現する熱交換器用チューブの製造方法を提供することを目的とする。   Then, an object of this invention is to provide the manufacturing method of the tube for heat exchangers which implement | achieves inlining from a flow-path groove formation process to a bending process, and implement | achieves reduction of a setup man-hour and reduction of manufacturing cost.

請求項１に記載の発明は、熱交換器用チューブとなる板材を圧延機へと送り出し、該板材の一面に圧延機により複数の流路溝を送り出し方向に沿って連続形成する流路溝形成工程と、前記流路溝が形成された後の前記板材をディンプル成型機へと送り出し、該板材の他面に送り出し方向と交差する方向に前記板材の板厚よりも浅いディンプルを複数形成するディンプル形成工程と、前記ディンプルが形成された板材を折り曲げ加工機へと送り出し、前記一面に形成された流路溝同士が一致するように前記板材を次第に二つ折りに折り曲げて行く折り曲げ加工工程と、を備えたことを特徴とする。   The invention according to claim 1 is a flow channel groove forming step of feeding a plate material to be a heat exchanger tube to a rolling mill and continuously forming a plurality of flow channel grooves on one surface of the plate material along the feed direction by the rolling mill. And forming a plurality of dimples shallower than the plate thickness of the plate material in a direction intersecting the feed direction on the other surface of the plate material to the dimple molding machine after the flow path groove is formed And a bending process step of feeding the plate material on which the dimples are formed to a bending machine, and gradually bending the plate material into two folds so that the flow channel grooves formed on the one surface coincide with each other. It is characterized by that.

請求項２に記載の発明は、請求項１に記載の熱交換器用チューブの製造方法であって、前記ディンプル形成工程では、複数の突起が表面に形成された第１ロールと、この第１ロールに形成された突起とそれぞれ対応する位置に該突起の受けとなる凹部が表面に形成された第２ロールとにより、前記板材をこれら第１ロールと第２ロールとの間に走行させて加圧することによりディンプルを形成することを特徴とする。   Invention of Claim 2 is a manufacturing method of the tube for heat exchangers of Claim 1, Comprising: In the said dimple formation process, the 1st roll by which several protrusion was formed in the surface, and this 1st roll The plate material is caused to travel between the first roll and the second roll by the second roll having a recess formed on the surface thereof at a position corresponding to the projection formed on the first roll and the second roll. In this way, dimples are formed.

請求項１に記載の発明によれば、流路溝形成工程後に板材の他面にディンプルを形成しているので、このディンプル加工により流路溝形成工程での圧延時に必要な張力を板材に与えることができる。したがって、本発明によれば、ディンプル形成工程後に連続して板材を折り曲げ加工工程へ送り出し板材を二つ折りに折り曲げることができ、各工程を連続して行うインライン化を実現することができる。その結果、段取り工数の低減並びに製造コストの低減を図ることができる。   According to the first aspect of the present invention, since the dimples are formed on the other surface of the plate material after the flow channel groove forming step, a tension necessary for rolling in the flow channel groove forming step is given to the plate material by this dimple processing. be able to. Therefore, according to the present invention, the plate material can be continuously sent to the bending process step after the dimple formation step, and the plate material can be folded in two, so that in-line processing can be realized in which each step is continuously performed. As a result, it is possible to reduce the number of setup steps and the manufacturing cost.

請求項２に記載の発明によれば、ディンプル形成工程における第１ロールに形成した突起が板材に食い込むことで、該突起が圧延時に必要な張力を板材に付与する際の滑り止めの役目を果たすことになる。   According to the second aspect of the present invention, the protrusion formed on the first roll in the dimple forming process bites into the plate material, so that the protrusion serves as a non-slip when the tension necessary for rolling is applied to the plate material. It will be.

以下、本発明を適用した具体的な実施の形態について図面を参照しながら詳細に説明する。   Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings.

「熱交換器用チューブの製造方法」
先ず、熱交換器用チューブを製造する一連の製造工程について図１を参照しながら説明する。製造工程には、流路溝形成工程、ディンプル形成工程、折り曲げ加工工程があるが、ここでは、各工程の装置についてはその説明を省略し、どのようにして板材から熱交換器用チューブ形状となるのかを判りやすく説明するものとする。 "Method for manufacturing tubes for heat exchangers"
First, a series of manufacturing steps for manufacturing a heat exchanger tube will be described with reference to FIG. The manufacturing process includes a channel groove forming process, a dimple forming process, and a bending process. Here, the description of the apparatus in each process is omitted, and how to form a heat exchanger tube shape from a plate material. It shall be explained in an easy-to-understand manner.

先ず、アルミニウムのクラッド材である長尺状の熱交換器用チューブとなる板材１を圧延機へと送り出し、この板材１の一面１ａに圧延機により複数の流路溝２を送り出し方向（板材の長手方向）に沿って連続形成する流路溝形成工程を行う。   First, a sheet material 1 that is a long heat exchanger tube, which is an aluminum clad material, is fed to a rolling mill, and a plurality of flow channel grooves 2 are fed to one surface 1a of the sheet material 1 by a rolling mill (the length of the sheet material). The flow path groove forming step is continuously performed along the direction.

図１（ａ）は流路溝形成工程で板材１の一面１ａに流路溝２を形成した状態を示す図である。流路溝２は、断面略半円形状をなす溝として板材幅方向に所定間隔を置いて複数形成する。これら流路溝２の数は、板材１の幅方向における中心Ｃを挟んで左右で同じ数だけ形成する。また、この板材１の幅方向における中心Ｃには、折り曲げ加工工程で板材１を二つ折りにするときに該板材１が折り曲がり易くなるようにするための折曲容易溝３を形成する。   FIG. 1A is a view showing a state in which the flow channel 2 is formed on the one surface 1a of the plate 1 in the flow channel forming step. A plurality of flow channel grooves 2 are formed at predetermined intervals in the plate width direction as grooves having a substantially semicircular cross section. The same number of the flow channel grooves 2 is formed on the left and right sides of the center C in the width direction of the plate 1. Further, at the center C in the width direction of the plate member 1, an easy-to-bend groove 3 is formed so that the plate member 1 can be easily bent when the plate member 1 is folded in the folding process.

次に、流路溝２が形成された後の前記板材１をディンプル成型機へと送り出し、該板材１の他面１ｂに送り出し方向（図１の矢印Ａで示す方向）と交差する方向に前記板材１の板厚よりも浅いディンプルを複数形成するディンプル形成工程を行う。   Next, the plate member 1 after the flow channel groove 2 is formed is sent to a dimple molding machine, and the plate member 1 is fed to the other surface 1b of the plate member 1 in a direction intersecting with the feed direction (direction indicated by arrow A in FIG. 1). A dimple formation process is performed in which a plurality of dimples shallower than the plate thickness of the plate material 1 are formed.

図１（ｂ）はディンプル形成工程で板材１の他面１ｂにディンプル４を複数形成した状態を示す図である。ディンプル４は、板材１の他面１ｂ（流路溝２が形成される一面１ａと反対側の面）に該板材１の送り出し方向（長手方向）と交差する方向（直交方向）に所定間隔を置いて一列に複数形成されている。この一例に複数個形成されたディンプル４からなるディンプル郡は、板材１の送り出し方向へ所定ピッチで複数列形成されている。本実施の形態では、板材１の幅方向における中心Ｃより左右の部位で、ディンプル郡の配列ピッチを半ピッチだけずらした配置としている。   FIG. 1B is a diagram showing a state in which a plurality of dimples 4 are formed on the other surface 1b of the plate 1 in the dimple formation process. The dimple 4 has a predetermined interval in the direction (orthogonal direction) intersecting the feeding direction (longitudinal direction) of the plate material 1 on the other surface 1b of the plate material 1 (surface opposite to the one surface 1a on which the flow channel groove 2 is formed). A plurality are formed in a row. In this example, a plurality of dimple groups formed of a plurality of dimples 4 are formed in a plurality of rows at a predetermined pitch in the feeding direction of the plate material 1. In the present embodiment, the arrangement pitch of the dimple groups is shifted by a half pitch at the left and right portions from the center C in the width direction of the plate 1.

そして最後に、ディンプル４が形成された板材１を折り曲げ加工機へと送り出し、一面１ａに形成された流路溝２同士が一致（合致）するように前記板材１を次第に二つ折りに折り曲げて行く折り曲げ加工工程を行う。   Finally, the plate material 1 on which the dimples 4 are formed is sent to a bending machine, and the plate material 1 is gradually folded in two so that the flow channel grooves 2 formed on the one surface 1a coincide with each other. Bending process is performed.

図１（ｃ）は折り曲げ加工工程で板材１を二つ折りに折り曲げる加工初期状態を示した図である。折り曲げ加工工程では、流路溝２が形成された一面１ａを合わせ面として前記折曲容易溝３を折り曲げ中心として板材１を二つ折りにして行く。図１（ｄ）は折り曲げ加工工程で板材１を二つ折りに折り曲げる加工中期状態を示した図である。図１（ｄ）では、板材１が略Ｖ字形状に折り曲げられた形状となっている。   FIG. 1C is a diagram showing an initial processing state in which the plate material 1 is folded in two in the bending process. In the bending process, the plate material 1 is folded in half with the folding easy groove 3 as a folding center with the one surface 1a on which the flow channel groove 2 is formed as a mating surface. FIG. 1 (d) is a diagram showing a mid-process state in which the plate material 1 is folded in half in the folding process. In FIG. 1D, the plate 1 is bent into a substantially V shape.

図１（ｅ）は折り曲げ加工工程で板材１が二つ折りにされた加工完了状態を示した図である。板材１が折曲容易溝３を中心として二つ折りに折り曲げられると、各流路溝２が合致して円形状となる。そして、二つ折りにされた板材１からなる熱交換器用チューブ５は、最終的に所定長さに切断される。このようにして得られた熱交換器用チューブ５は、フィンやタンクと共に組み付けられて炉内に入れられてろう付けされることで接合一体化される。   FIG. 1 (e) is a diagram showing a processing completed state in which the plate 1 is folded in the folding process. When the plate 1 is folded in half with the easy-to-bend groove 3 as the center, the flow path grooves 2 are matched and become circular. And the tube 5 for heat exchangers which consists of the board | plate material 1 folded in half is finally cut | disconnected by predetermined length. The heat exchanger tube 5 obtained in this manner is assembled together with fins and tanks, and is put into a furnace and brazed to be integrated.

図２（ａ）は本発明方法により完成した熱交換器用チューブ５の平面図、図２（ｂ）は図２（ａ）のＡ−Ａ断面図、図３（ａ）は図２（ａ）のＢ−Ｂ断面図、図３（ｂ）は図２（ａ）のＣ−Ｃ断面図である。   2A is a plan view of the heat exchanger tube 5 completed by the method of the present invention, FIG. 2B is a cross-sectional view taken along the line AA of FIG. 2A, and FIG. 3A is FIG. 2A. FIG. 3B is a cross-sectional view taken along line BB in FIG. 2A.

この熱交換器用チューブ５では、冷媒が流通する流路溝２内にディンプル４が形成されたことによる凸部６が突出するため、冷媒がこの凸部６にぶつかり乱流となる。このチューブ内乱流が生じることで、熱交換率が向上し、熱交換器としての性能が高くなる。   In this heat exchanger tube 5, the convex portion 6 is formed by the formation of the dimple 4 in the flow path groove 2 through which the refrigerant flows. Therefore, the refrigerant collides with the convex portion 6 and becomes a turbulent flow. Due to the turbulent flow in the tube, the heat exchange rate is improved and the performance as a heat exchanger is enhanced.

「装置構成」
次に、本発明方法で使用する装置構成について説明する。図４は流路溝形成工程、ディンプル形成工程、折り曲げ加工工程で使用される圧延機、ディンプル成型機、折り曲げ加工機を示す図である。なお、折り曲げ加工工程後は、熱交換器用チューブ５を所定長さに切断する切断加工工程で使用される切断機があるが図示は省略する。 "Device configuration"
Next, the apparatus configuration used in the method of the present invention will be described. FIG. 4 is a view showing a rolling mill, a dimple molding machine, and a bending machine used in a flow channel groove forming process, a dimple forming process, and a bending process. Although there is a cutting machine used in the cutting process for cutting the heat exchanger tube 5 to a predetermined length after the bending process, the illustration is omitted.

圧延機７では、芯棒に巻回された板材１がアンコイラ８によって供給され、この板材１に対して流路溝２をその送り方向に沿って連続形成する。図５は圧延機７の要部拡大正面図、図６は圧延機７の要部拡大側面図である。   In the rolling mill 7, the plate material 1 wound around the core rod is supplied by an uncoiler 8, and the flow channel 2 is continuously formed along the feed direction of the plate material 1. FIG. 5 is an enlarged front view of the main part of the rolling mill 7, and FIG. 6 is an enlarged side view of the main part of the rolling mill 7.

かかる圧延機７は、板材１を挟んで上下に配置される上ロール９と下ロール１０とを有し、上ロール９の表面に形成された複数個の流路溝形成用突条１１と折曲容易溝形成用突条１２を板材１の一面１ａに押し付けて圧延することで流路溝２及び折曲容易溝３を形成する。   The rolling mill 7 has an upper roll 9 and a lower roll 10 that are arranged above and below the plate material 1, and is folded with a plurality of channel groove forming protrusions 11 formed on the surface of the upper roll 9. The channel groove 2 and the easy-to-bend groove 3 are formed by pressing and rolling the bendable groove forming protrusion 12 against the one surface 1 a of the plate 1.

ディンプル成型機１３では、流路溝２が形成された板材１に対して小さな凹みであるディンプル４を形成する。図７はディンプル成型機１３の要部拡大正面図、図８（ａ）は図７のＡ−Ａ断面図、図８（ｂ）は図７のＢ−Ｂ断面図である。   The dimple molding machine 13 forms the dimple 4 that is a small recess with respect to the plate material 1 on which the flow channel groove 2 is formed. 7 is an enlarged front view of the main part of the dimple molding machine 13, FIG. 8A is a cross-sectional view taken along the line AA in FIG. 7, and FIG. 8B is a cross-sectional view taken along the line BB in FIG.

かかるディンプル成型機１３は、複数の突起１４が表面に形成された第１ロール１５と、この第１ロール１５に形成された突起１４とそれぞれ対応する位置に該突起１４の受けとなる凹部１６が表面に形成された第２ロール１７とにより、前記板材１をこれら第１ロール１５と第２ロール１７との間に走行させて加圧することによりディンプル４を形成する。   The dimple molding machine 13 includes a first roll 15 having a plurality of protrusions 14 formed on the surface, and a recess 16 that receives the protrusion 14 at a position corresponding to each of the protrusions 14 formed on the first roll 15. The dimple 4 is formed by causing the plate 1 to travel between the first roll 15 and the second roll 17 and pressurizing it with the second roll 17 formed on the surface.

第１ロール１５には、流路溝２が形成された板材１の一面１ａとは反対側の他面１ｂにディンプル４を形成するための円形状又は長円形状をなす突起１４が複数形成されている。本実施の形態では、図７に示すように、第１ロール１５の右半分の領域と左半分の領域にそれぞれロール長手方向に沿って一列に複数個の突起１４を形成しており、その右半分の領域に形成された複数個の突起１４郡と、左半分の領域に形成された複数個の突起１４郡を、半ピッチずらして配置させている。   The first roll 15 is formed with a plurality of circular or oval projections 14 for forming the dimples 4 on the other surface 1b opposite to the one surface 1a of the plate 1 on which the flow channel grooves 2 are formed. ing. In the present embodiment, as shown in FIG. 7, a plurality of protrusions 14 are formed in a line along the longitudinal direction of the roll in the right half area and the left half area of the first roll 15, respectively. The plurality of protrusions 14 formed in the half area and the plurality of protrusions 14 formed in the left half are shifted by a half pitch.

第２ロール１７には、流路溝形成工程で形成された流路溝２の形状を受けるための流路溝受け用突条１８と、折曲容易溝３の形状を受ける折曲容易溝受け用突条１９と、第１ロール１５に形成された前記突起１４の受けとなる凹部１６と、が形成されている。   The second roll 17 includes a channel groove receiving protrusion 18 for receiving the shape of the channel groove 2 formed in the channel groove forming step, and an easy bending groove receiver for receiving the shape of the easy bending groove 3. A projecting ridge 19 and a recess 16 that receives the projection 14 formed on the first roll 15 are formed.

流路溝受け用突条１８は、流路溝２に嵌合する半円形状をなす突条として第１ロール１５の周面に沿って形成されている。折曲容易溝受け用突条１９も同じく、折曲容易溝３に嵌合する断面形状をなす突状として第１ロール１５の周面に沿って形成されている。凹部１６は、第１ロール１５に形成された突起１４により押されて流路溝２内へと突き出た凸部を受ける凹みとして形成され、前記流路溝受け用突条１８の先端に形成されている。   The channel groove receiving ridges 18 are formed along the peripheral surface of the first roll 15 as semicircular ridges that fit into the channel grooves 2. Similarly, the ridge 19 for receiving the easy-to-bend groove is formed along the peripheral surface of the first roll 15 as a protrusion having a cross-sectional shape that fits into the bendable groove 3. The recess 16 is formed as a recess that receives a protrusion that is pushed by the protrusion 14 formed in the first roll 15 and protrudes into the flow channel groove 2, and is formed at the tip of the flow channel groove receiving protrusion 18. ing.

これら第１ロール１５と第２ロール１７の間へと送り出された板材１の他面１ｂには、第１ロール１５に形成された突起１４によりディンプル４が形成される。このとき、突起１４の裏側には、第２ロール１７に形成された凹部１６が当該突起１４により押されて流路溝２内へと突出する部位を支えるため、流路溝２が潰れてしまうことがない。   Dimples 4 are formed by projections 14 formed on the first roll 15 on the other surface 1b of the plate 1 fed between the first roll 15 and the second roll 17. At this time, on the back side of the protrusion 14, the recess 16 formed in the second roll 17 supports the part that is pushed by the protrusion 14 and protrudes into the channel groove 2, so that the channel groove 2 is crushed. There is nothing.

折り曲げ加工機２０では、板材１の一面１ａに形成された流路溝２同士を一致させるようにして前記板材１を次第に二つ折りに折り曲げて行く。   In the bending machine 20, the plate material 1 is gradually folded in two so that the flow channel grooves 2 formed on the one surface 1a of the plate material 1 coincide with each other.

以上のように、本実施の形態では、流路溝形成工程で用いられる圧延機７と、ディンプル４を形成するディンプル成型機１３と、板材１を二つ折りに折り曲げる折り曲げ加工機２０とを、同一ラインに配置して連続加工を可能とするインライン化ができる。   As described above, in the present embodiment, the rolling mill 7 used in the flow path groove forming step, the dimple forming machine 13 that forms the dimple 4, and the bending machine 20 that bends the plate 1 in two are the same. It can be inlined to allow continuous processing by placing it on the line.

「その他の実施の形態」
以上、本発明を適用した具体的な実施の形態について説明したが、前記実施の形態は本発明の一例であり、前記実施の形態に制限されることはない。 "Other embodiments"
The specific embodiment to which the present invention is applied has been described above, but the embodiment is an example of the present invention and is not limited to the embodiment.

図９は熱交換器用チューブ５の表面に形成されるディンプル４の他の例を示す図である。   FIG. 9 is a view showing another example of the dimple 4 formed on the surface of the heat exchanger tube 5.

ディンプル４は、図９（ａ）に示すような平面視略Ｖ字形状の配列パターンでも良く、図９（ｂ）に示すようなチューブ長手方向に沿って斜めに配列された配列パターンであっても良い。   The dimples 4 may be arranged in a substantially V shape in plan view as shown in FIG. 9A, or arranged in an oblique manner along the tube longitudinal direction as shown in FIG. 9B. Also good.

またこの他、ディンプル４は、図９（ｃ）及び図９（ｄ）に示すような細長い形状であっても良く、その細長い形状としたディンプル４を各図のようにチューブ長手方向に沿って斜めに配列させても良く、或いは、チューブ幅方向に沿って配列させても良い。   In addition, the dimple 4 may have an elongated shape as shown in FIGS. 9C and 9D, and the elongated dimple 4 is arranged along the longitudinal direction of the tube as shown in each drawing. It may be arranged obliquely or may be arranged along the tube width direction.

図１（ａ）は流路溝形成工程で板材の一面に流路溝を形成した状態を示す図、図１（ｂ）はディンプル形成工程で板材の他面にディンプルを複数形成した状態を示す図、図１（ｃ）は折り曲げ加工工程で板材を二つ折りに折り曲げる加工初期状態を示した図、図１（ｄ）は折り曲げ加工工程で板材を二つ折りに折り曲げる加工中期状態を示した図、図１（ｅ）は折り曲げ加工工程で板材が二つ折りにされた加工完了状態を示した図である。FIG. 1A is a diagram showing a state in which a channel groove is formed on one surface of the plate material in the channel groove forming step, and FIG. 1B is a diagram showing a state in which a plurality of dimples are formed on the other surface of the plate material in the dimple forming step. FIG. 1 (c) is a diagram showing an initial processing state in which a plate material is folded in a folding process, and FIG. 1 (d) is a diagram showing a middle processing state in which the plate material is folded in a folding process. FIG.1 (e) is the figure which showed the processing completion state by which the board | plate material was folded in half by the bending process. 図２（ａ）は本発明方法により完成した熱交換器用チューブの平面図、図２（ｂ）は図２（ａ）のＡ−Ａ断面図である。2A is a plan view of a heat exchanger tube completed by the method of the present invention, and FIG. 2B is a cross-sectional view taken along the line AA of FIG. 2A. 図３（ａ）は図２（ａ）のＢ−Ｂ断面図、図３（ｂ）は図２（ａ）のＣ−Ｃ断面図である。3A is a BB cross-sectional view of FIG. 2A, and FIG. 3B is a CC cross-sectional view of FIG. 2A. 図４は流路溝形成工程、ディンプル形成工程、折り曲げ加工工程で使用される圧延機、ディンプル成型機、折り曲げ加工機を示す図である。FIG. 4 is a view showing a rolling mill, a dimple molding machine, and a bending machine used in a flow channel groove forming process, a dimple forming process, and a bending process. 図５は圧延機の要部拡大正面図である。FIG. 5 is an enlarged front view of a main part of the rolling mill. 図６は圧延機の要部拡大側面図である。FIG. 6 is an enlarged side view of a main part of the rolling mill. 図７はディンプル成型機の要部拡大正面図である。FIG. 7 is an enlarged front view of the main part of the dimple molding machine. 図８（ａ）は図７のＡ−Ａ断面図、図８（ｂ）は図７のＢ−Ｂ断面図である。8A is a cross-sectional view taken along the line AA in FIG. 7, and FIG. 8B is a cross-sectional view taken along the line BB in FIG. 図９（ａ）はディンプルを平面視略Ｖ字形状の配列パターンとした図、図９（ｂ）はディンプルをチューブ長手方向に沿って斜めに配列する配列パターンとした図、図９（ｃ）はディンプルを細長い形状とし且つチューブ長手方向に沿って斜めに配列した配列パターンとした図、図９（ｄ）はディンプルを細長い形状とし且つチューブ幅方向に沿って配列した配列パターンとした図である。FIG. 9A is a diagram in which dimples are arranged in an approximately V shape in plan view, FIG. 9B is a diagram in which dimples are arranged in an oblique manner along the tube longitudinal direction, and FIG. 9C. FIG. 9D is an arrangement pattern in which dimples have an elongated shape and are arranged obliquely along the longitudinal direction of the tube, and FIG. 9D is an illustration in which the dimples have an elongated shape and are arranged along the tube width direction. . 図１０は従来の製造装置の配置図である。FIG. 10 is a layout view of a conventional manufacturing apparatus. 図１１（ａ）は従来方法により製造される熱交換器用チューブの製造工程のうち流路溝が形成された状態を示す図、図１１（ｂ）は二つ折りに折り曲げて熱交換器用チューブとされた状態を示す図である。FIG. 11A is a view showing a state in which a flow channel is formed in a manufacturing process of a heat exchanger tube manufactured by a conventional method, and FIG. 11B is a heat exchanger tube folded in two. FIG.

符号の説明Explanation of symbols

１…板材（熱交換器用チューブとなる板材）
１ａ…板材の一面
１ｂ…板材の他面
２…流路溝
３…折曲容易溝
４…ディンプル
５…熱交換器用チューブ
７…圧延機
１３…ディンプル成型機
１４…突起（第１ロールに形成された突起）
１５…第１ロール
１６…凹部（第２ロールに形成された凹部）
１７…第２ロール
２０…折り曲げ加工機 1. Plate material (plate material used as a heat exchanger tube)
DESCRIPTION OF SYMBOLS 1a ... One side of board | plate material 1b ... Other side of board | plate material 2 ... Channel groove 3 ... Easy bending groove 4 ... Dimple 5 ... Heat exchanger tube 7 ... Rolling mill 13 ... Dimple molding machine 14 ... Protrusion (it is formed in the 1st roll) Protrusion)
15 ... 1st roll 16 ... recessed part (recessed part formed in the 2nd roll)
17 ... second roll 20 ... bending machine

Claims (2)

熱交換器用チューブとなる板材（１）を圧延機（７）へと送り出し、該板材（１）の一面（１ａ）に圧延機（７）により複数の流路溝（２）を送り出し方向に沿って連続形成する流路溝形成工程と、
前記流路溝（２）が形成された後の前記板材（１）をディンプル成型機（１３）へと送り出し、該板材（１）の他面（１ｂ）に送り出し方向と交差する方向に前記板材（１）の板厚よりも浅いディンプル（４）を複数形成するディンプル形成工程と、
前記ディンプル（４）が形成された板材（１）を折り曲げ加工機（２０）へと送り出し、前記一面（１ａ）に形成された流路溝（２）同士が一致するように前記板材（１）を次第に二つ折りに折り曲げて行く折り曲げ加工工程と、を備えた
ことを特徴とする熱交換器用チューブの製造方法。 The plate material (1) to be a heat exchanger tube is fed to the rolling mill (7), and a plurality of channel grooves (2) are fed along the feeding direction by the rolling mill (7) on one surface (1a) of the plate material (1). A flow path groove forming step continuously formed,
The plate material (1) after the flow channel groove (2) is formed is sent to a dimple molding machine (13), and the plate material (1) is fed to the other surface (1b) in a direction crossing the feed direction. A dimple formation step of forming a plurality of dimples (4) shallower than the plate thickness of (1),
The plate material (1) on which the dimples (4) are formed is sent to a bending machine (20), and the plate material (1) so that the channel grooves (2) formed on the one surface (1a) coincide with each other. A method of manufacturing a heat exchanger tube, comprising: a folding process step of gradually folding the material into two. 請求項１に記載の熱交換器用チューブの製造方法であって、
前記ディンプル形成工程では、複数の突起（１４）が表面に形成された第１ロール（１５）と、この第１ロール（１５）に形成された突起（１４）とそれぞれ対応する位置に該突起（１４）の受けとなる凹部（１６）が表面に形成された第２ロール（１７）とにより、前記板材（１）をこれら第１ロール（１５）と第２ロール（１７）との間に走行させて加圧することによりディンプル（４）を形成する
ことを特徴とする熱交換器用チューブの製造方法 It is a manufacturing method of the tube for heat exchangers of Claim 1, Comprising:
In the dimple formation step, the first roll (15) having a plurality of protrusions (14) formed on the surface, and the protrusions (14) at positions corresponding to the protrusions (14) formed on the first roll (15), respectively. 14) The plate member (1) travels between the first roll (15) and the second roll (17) by the second roll (17) having a recess (16) formed on the surface thereof. A dimple (4) is formed by pressurizing and forming a tube for a heat exchanger
JP2007175139A 2007-07-03 2007-07-03 Manufacturing method of tube for heat exchanger Pending JP2009014231A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014502559A (en) * 2010-12-14 2014-02-03 インスティトゥート フュア ミクロテクニック マアインズ ゲーエムベーハー Microfluidic device, reactor composed of a plurality of microfluidic devices, and manufacturing method thereof
CN112845938A (en) * 2020-12-31 2021-05-28 南宁市安和机械设备有限公司 Equipment for manufacturing staggered dotting oil cooler pipe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014502559A (en) * 2010-12-14 2014-02-03 インスティトゥート フュア ミクロテクニック マアインズ ゲーエムベーハー Microfluidic device, reactor composed of a plurality of microfluidic devices, and manufacturing method thereof
CN112845938A (en) * 2020-12-31 2021-05-28 南宁市安和机械设备有限公司 Equipment for manufacturing staggered dotting oil cooler pipe
CN112845938B (en) * 2020-12-31 2023-06-23 南宁市安和机械设备有限公司 Equipment for manufacturing misplaced dotting oil cooler pipe

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