JP2012184907A - Heat exchanger, method of manufacturing the same, and air conditioner including the same - Google Patents

Heat exchanger, method of manufacturing the same, and air conditioner including the same Download PDF

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JP2012184907A
JP2012184907A JP2011050040A JP2011050040A JP2012184907A JP 2012184907 A JP2012184907 A JP 2012184907A JP 2011050040 A JP2011050040 A JP 2011050040A JP 2011050040 A JP2011050040 A JP 2011050040A JP 2012184907 A JP2012184907 A JP 2012184907A
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fin
heat transfer
heat exchanger
transfer tube
collar
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JP5725914B2 (en
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Kenichi Kitani
健一 木谷
Takahiko Kawai
孝彦 河合
Kenji Okuda
憲治 億田
Kisaburo Kokubu
喜三郎 國分
Yoshihide Asai
美秀 浅井
Mitsuhiro Ishikawa
光裕 石川
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Mitsubishi Electric Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger of high performance and high productivity, and a method of manufacturing the same.SOLUTION: This method of manufacturing the heat exchanger including a plurality of flat heat transfer tubes arranged in parallel with each other for circulating a heat exchange medium therein, and a plurality of flat fins inserted in a stacked state at prescribed intervals in the direction orthogonal to the heat transfer tubes, and having notched inserting parts, includes a step of forming collar-free fins 10A to form fin collar parts on the inserting parts in a state of not raising the fin collar parts, a step of bringing fin collar parts 13 into closely kept into contact with the heat transfer tubes 20 in a state of being vertically raised to the collar-free fins 10A by pressing collar-free inserting parts 14 of the collar-free fins to the heat transfer tubes 20 by using a jig 30, and a step of adhering and joining the fin collar parts 13 closely kept into contact with the heat transfer tubes, to the heat transfer tubes 20.

Description

本発明は、フィンアンドチューブ式の熱交換器、熱交換器の製造方法及びこの熱交換器を備えた空気調和機に関するものである。   The present invention relates to a fin-and-tube heat exchanger, a method for manufacturing the heat exchanger, and an air conditioner including the heat exchanger.

室内空調用として用いられる空気調和機は、その本体の内部の熱交換器に、フィンアンドチューブ式熱交換器が用いられている。   An air conditioner used for indoor air conditioning uses a fin-and-tube heat exchanger as a heat exchanger inside its main body.

かかるフィンアンドチューブ式熱交換器は、複数枚の平板状の熱交換フィンが所定の間隔をおいて積層され、これらフィンを貫通する冷媒配管（伝熱管）とから構成され、冷凍サイクルの凝縮器や蒸発器として使用されている。   Such a fin-and-tube heat exchanger includes a plurality of flat plate-shaped heat exchange fins stacked at a predetermined interval and a refrigerant pipe (heat transfer pipe) that passes through the fins. And is used as an evaporator.

例えば、空気調和機における熱交換器の全体を占める割合は大きく、近年、空気調和機の高性能化、コンパクト化が進むなかで、熱交換器の小型化は非常に重要となっている。
空気調和機に用いられるフィンアンドチューブ式熱交換器に、複数枚の平板状の熱交換用フィンが積層され、これらのフィンを貫通して円管からなる冷媒配管が設けられ、例えば冷凍サイクルの凝縮器として使用されているものがある（例えば、特許文献１参照）。
また、フィンアンドチューブ式熱交換器の冷媒配管として扁平状の熱交換パイプを用いたものがある（例えば、特許文献２、３参照）。 For example, the ratio of the heat exchanger in the air conditioner is large, and in recent years, the miniaturization of the heat exchanger is very important as the performance and compactness of the air conditioner progress.
A fin-and-tube heat exchanger used in an air conditioner is laminated with a plurality of flat plate heat exchange fins, and a refrigerant pipe made of a circular pipe is provided through these fins. There is what is used as a condenser (for example, refer to patent documents 1).
Moreover, there exists what used the flat heat exchange pipe as refrigerant | coolant piping of a fin and tube type heat exchanger (for example, refer patent document 2, 3).

前記扁平形熱交換パイプ（伝熱管）は、扁平形状であるので、通風抵抗を増大させることなく冷媒量を多くすることができる。それにより、従来の熱交換器よりも小型に構成した場合においても十分な熱交換器の性能を得ることができる。   Since the flat heat exchange pipe (heat transfer tube) has a flat shape, the amount of refrigerant can be increased without increasing the ventilation resistance. Thereby, sufficient performance of the heat exchanger can be obtained even when it is configured to be smaller than the conventional heat exchanger.

特開平１０−２３８９８１号公報（図１、図４、図５）Japanese Patent Laid-Open No. 10-238981 (FIGS. 1, 4, and 5) 特開平９−３２４９９５号公報（図１、図４、図６、図１１）JP-A-9-324995 (FIGS. 1, 4, 6, and 11) 特開平１０−７８２９６号公報（図１〜３）JP-A-10-78296 (FIGS. 1 to 3)

ところで、上述した熱交換器は、以下のような方法で製作することができる。上記扁平形状を有する管は、その管形状より一般的に円管熱交換器の製造に用いられているような拡管が困難である。そのため、伝熱管とフィンの密着性を確保する必要があることから、図９に示すような回動挿入治具３０等を用いて、フィン１０Ｂを１枚ずつ伝熱管２０の上部より回動して、フィンピッチを保ちながら伝熱管２０に挿入する。このため、例えば特許文献２に示されるように、フィン１０Ｂには、伝熱管２０に挿入するための略Ｕ字状の切欠き部と、切欠き部より起立したフィンカラー部がプレス加工によりあらかじめ形成されている。なお、図９については後で詳しく説明する。   By the way, the heat exchanger mentioned above can be manufactured by the following methods. The tube having the above flat shape is more difficult to expand than the tube shape, which is generally used for manufacturing a circular heat exchanger. Therefore, since it is necessary to ensure adhesion between the heat transfer tubes and the fins, the fins 10B are rotated from the upper portion of the heat transfer tubes 20 one by one using a rotation insertion jig 30 as shown in FIG. The heat transfer tube 20 is inserted while maintaining the fin pitch. For this reason, for example, as shown in Patent Document 2, the fin 10B has a substantially U-shaped notch portion for insertion into the heat transfer tube 20 and a fin collar portion raised from the notch portion in advance by press working. Is formed. Note that FIG. 9 will be described in detail later.

そして、フィンと伝熱管を接合するにあたって、ロウ付けにより接合した場合は、ロウ材や接合部等の管理・運用面から生産コストが増大してしまい、安価な熱交換器を製造することが困難となる。   And, when joining fins and heat transfer tubes, if they are joined by brazing, the production cost will increase from the management and operational aspects of brazing materials and joints, making it difficult to produce inexpensive heat exchangers. It becomes.

そこで、生産コストを低減するために、フィンと伝熱管との接合を接着によって行うことが考えられる。しかし、接着剤は熱伝導率が低いため、フィンと伝熱管との密着性を確保しておくことが重要になる。   Therefore, in order to reduce the production cost, it is conceivable to bond the fin and the heat transfer tube by bonding. However, since the adhesive has a low thermal conductivity, it is important to ensure the adhesion between the fin and the heat transfer tube.

また、製造される機種によっては室内機形状が小さいものがあるため、そのような室内機に対しては、熱交換器の両端のフィンを内側に倒すことで対処している。そのため、伝熱管とフィンとが結合された熱交換器は、そのフィン両端部を、後工程で例えば図１０に示すようなフィン端倒し治具３５を用いて、挿入方向へ倒すことで製作している。なお、図１０についても後で詳しく説明する。   Moreover, since there exists a thing with a small indoor unit shape depending on the model manufactured, it copes with such an indoor unit by putting down the fin of the both ends of a heat exchanger inside. Therefore, a heat exchanger in which a heat transfer tube and a fin are combined is manufactured by tilting both ends of the fin in the insertion direction using a fin end tilting jig 35 as shown in FIG. ing. Note that FIG. 10 will be described in detail later.

しかし、この方法では、フィンを倒す際に熱交換器を傷つけたり、変形させたりする可能性がある。そのため、熱交換器に傷や変形を生じさせないように配慮しながら、フィン両端部を倒す必要がある。したがって、その工程には必然的に所定の時間を要することとなり、タクトタイム、製造コストの増加を招くこととなる。   However, with this method, the heat exchanger may be damaged or deformed when the fins are brought down. For this reason, it is necessary to tilt both ends of the fin while taking care not to cause scratches or deformation in the heat exchanger. Therefore, a predetermined time is inevitably required for the process, and the tact time and the manufacturing cost are increased.

本発明は、上記のような課題を解決するためになされたものであり、その目的とするところは、熱交換器に傷や変形を生じさせることなく、かつ工程を増やすことなしに、フィン両端部が倒れた生産性の高い熱交換器を得ること、及びそのような熱交換器を安価に製造することにある。   The present invention has been made in order to solve the above-described problems, and the object of the present invention is to prevent both ends of the fin without causing scratches or deformation in the heat exchanger and without increasing the number of steps. The object is to obtain a highly productive heat exchanger whose parts have fallen and to manufacture such a heat exchanger at low cost.

本発明に係る熱交換器は、並列に配設され、内部を熱交換媒体が流通する複数の扁平状の伝熱管と、前記伝熱管に直交する方向に所定の間隔をおいて積層状態に挿入され、切欠き状の挿入部を有する複数の平板状のフィンと、を備えた熱交換器であって、
前記フィンは、前記挿入部に前記伝熱管と密着するフィンカラー部を有し、
前記フィンカラー部が前記伝熱管に接着接合されているものである。 The heat exchanger according to the present invention is arranged in parallel, and is inserted in a laminated state at a predetermined interval in a direction orthogonal to the heat transfer tubes, and a plurality of flat heat transfer tubes through which the heat exchange medium flows. A plurality of plate-like fins having notch-like insertion portions, and a heat exchanger comprising:
The fin has a fin collar portion in close contact with the heat transfer tube in the insertion portion,
The fin collar portion is adhesively bonded to the heat transfer tube.

また、本発明に係る熱交換器の製造方法は、並列に配設され、内部を熱交換媒体が流通する複数の扁平状の伝熱管と、前記伝熱管に直交する方向に所定の間隔をおいて積層状態に挿入され、切欠き状の挿入部を有する複数の平板状のフィンと、を備えた熱交換器の製造方法において、
前記挿入部にフィンカラー部を立ち上げない状態で形成したカラー未成形フィンを形成する工程と、
前記カラー未成形フィンのカラー未成形挿入部を、前記伝熱管に治具を用いて押し込むことにより、フィンカラー部を前記カラー未成形フィンに対して垂直に立ち上げて前記伝熱管に密着させる工程と、
前記密着させたフィンカラー部を前記伝熱管に接着接合する工程と、
を有するものである。 In addition, the method of manufacturing a heat exchanger according to the present invention includes a plurality of flat heat transfer tubes that are arranged in parallel and through which a heat exchange medium flows, and a predetermined interval in a direction perpendicular to the heat transfer tubes. In a method of manufacturing a heat exchanger comprising a plurality of plate-like fins inserted in a stacked state and having notch-like insertion portions,
Forming a color unmolded fin formed in a state where the fin collar portion is not raised in the insertion portion;
The step of bringing the fin collar portion upright with respect to the color unmolded fin and bringing it into close contact with the heat transfer tube by pushing the collar unmolded insertion portion of the collar unmolded fin into the heat transfer tube using a jig. When,
Adhering and bonding the closely attached fin collar part to the heat transfer tube;
It is what has.

本発明の熱交換器は、フィンカラー部を伝熱管に密着させた上で接着接合するものであるので、接着剤による伝熱性を損なうことなく、容易かつ簡単にフィンの接合を行うことができる。   Since the heat exchanger according to the present invention is bonded and bonded after the fin collar portion is in close contact with the heat transfer tube, it is possible to bond the fins easily and easily without impairing the heat transfer property by the adhesive. .

また、切欠き状の挿入部にフィンカラー部を立ち上げずに形成したカラー未成形フィンを伝熱管に挿入すると同時に、熱交換器幅方向の端部に当たるフィンの両端部をフィン挿入方向へ倒すことができる。よって、フィン挿入完了後に行っていた熱交換器両端のフィンを倒す工程を省くことができる。   In addition, the collar unformed fin formed without raising the fin collar portion in the notched insertion portion is inserted into the heat transfer tube, and at the same time, both end portions of the fin that hit the end portion in the heat exchanger width direction are tilted in the fin insertion direction. be able to. Therefore, the process of defeating the fins at both ends of the heat exchanger, which has been performed after completion of the fin insertion, can be omitted.

さらに、フィン製作時にフィンカラー部を立ち上げる工程を省くことができるため、フィンの金型のカラー立上げ工程を省くことができ、パンチなどの設備費削減や、工程削減による生産性向上が可能となる。   In addition, since the process of starting up the fin collar when manufacturing fins can be omitted, the process of starting up the collar of the fin mold can be omitted, reducing equipment costs such as punching and improving productivity by reducing processes. It becomes.

本発明の実施の形態１に係る熱交換器が搭載された空気調和機の断面図である。It is sectional drawing of the air conditioner by which the heat exchanger which concerns on Embodiment 1 of this invention is mounted. 実施の形態１に係る熱交換器の一部分を示す斜視図である。1 is a perspective view showing a part of a heat exchanger according to Embodiment 1. FIG. 図２の熱交換器の正面図である。It is a front view of the heat exchanger of FIG. 熱交換器の端部（図３のＤ部）の断面を示す拡大図である。It is an enlarged view which shows the cross section of the edge part (D section of FIG. 3) of a heat exchanger. カラー成形した従来のフィン形状を示す平面図である。It is a top view which shows the conventional fin shape color-molded. 図５のＸ−Ｘ線断面図である。FIG. 6 is a sectional view taken along line XX of FIG. 5. カラー成形しないフィン形状を示す平面図である。It is a top view which shows the fin shape which is not color-molded. 図７のＹ−Ｙ線断面図である。It is the YY sectional view taken on the line of FIG. 伝熱管へのフィン挿入方法を示す説明図である。It is explanatory drawing which shows the fin insertion method to a heat exchanger tube. 伝熱管へフィン挿入後に、フィン両端部を倒す従来方法を示す説明図である。It is explanatory drawing which shows the conventional method which folds down both ends of a fin after fin insertion to a heat exchanger tube. 伝熱管へのフィン挿入過程を示す説明図である。It is explanatory drawing which shows the fin insertion process to a heat exchanger tube. 伝熱管へのフィン挿入過程における一方のフィン端部の詳細図である。It is detail drawing of one fin edge part in the fin insertion process to a heat exchanger tube. 実施の形態２におけるフィンの伝熱管への挿入過程を示す説明図である。It is explanatory drawing which shows the insertion process to the heat exchanger tube of the fin in Embodiment 2. FIG. 図１３の一方のフィン端部の詳細図である。FIG. 14 is a detailed view of one fin end of FIG. 13.

以下、本発明の実施の形態を図面を用いて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

実施の形態１．
図１は本発明の実施の形態１に係る熱交換器を搭載した空気調和機１の断面図である。
図１に示すように、空気調和機１は、本体２と、本体２の内部に空気調和手段として設置された、熱交換器３および送風機４とを備えており、本体２の上部に設けられた吸込口５から室内空気をフィルター６を介して吸い込み、吸い込まれた空気が熱交換器３を通過する過程で、この熱交換器３の伝熱管内を流通する熱交換媒体と熱交換され、冷風または温風となって本体２下部の吹出口７より室内へ吹き出すことで、冷房または暖房等を行うようになっている。 Embodiment 1 FIG.
FIG. 1 is a cross-sectional view of an air conditioner 1 equipped with a heat exchanger according to Embodiment 1 of the present invention.
As shown in FIG. 1, the air conditioner 1 includes a main body 2, a heat exchanger 3 and a blower 4 installed as air conditioning means inside the main body 2, and is provided on the upper portion of the main body 2. The indoor air is sucked through the filter 6 through the suction port 5, and in the process in which the sucked air passes through the heat exchanger 3, heat is exchanged with the heat exchange medium circulating in the heat transfer pipe of the heat exchanger 3, Cooling air or warm air is blown into the room through the air outlet 7 at the lower part of the main body 2 so as to perform cooling or heating.

このような空気調和機１に搭載されるフィンアンドチューブ式の熱交換器３を図２〜図４に示す。図２はその熱交換器の一部分を示す斜視図で、図２では図３に示すヘアピン部は省略してある。図３は図２の熱交換器の正面図である。また、図４は熱交換器の端部（図３のＤ部）の断面を示す拡大図である。   A fin-and-tube heat exchanger 3 mounted on such an air conditioner 1 is shown in FIGS. FIG. 2 is a perspective view showing a part of the heat exchanger. In FIG. 2, the hairpin portion shown in FIG. 3 is omitted. FIG. 3 is a front view of the heat exchanger of FIG. FIG. 4 is an enlarged view showing a cross section of an end portion (D portion in FIG. 3) of the heat exchanger.

この熱交換器３は、並列に配設され、内部を水や冷媒等の流体である熱交換媒体が流通する複数の扁平状の伝熱管２０と、伝熱管２０に直交する方向に所定の間隔をおいて積層状態に挿入され、略Ｕ字状に切り欠かれた挿入部（切欠き部）１１を有する複数の平板状のフィン１０とを備えている。また、各フィン１０には、隣接する挿入部１１間の面に同じ向きに向けてそれぞれスリット１２がプレスによる切り起こしにより形成されている。このような平板状のフィン１０が略Ｕ字状の挿入部１１を介して、並列に配設された扁平状の伝熱管２０に対し積層されて挿入される。そして、フィン挿入の際、後述するようにフィン１０と伝熱管２０とがフィンカラー部１３を介して密着するように接合される。図３、図４において、Ｃはフィン１０と伝熱管２０の接合部を示している。   The heat exchanger 3 is arranged in parallel and has a plurality of flat heat transfer tubes 20 through which a heat exchange medium that is a fluid such as water or refrigerant flows, and a predetermined interval in a direction perpendicular to the heat transfer tubes 20. And a plurality of plate-like fins 10 each having an insertion portion (notch portion) 11 that is inserted in a stacked state and cut out in a substantially U shape. Further, each fin 10 is formed with a slit 12 in the same direction on the surface between the adjacent insertion portions 11 by cutting and raising. Such flat fins 10 are stacked and inserted into the flat heat transfer tubes 20 arranged in parallel via the substantially U-shaped insertion portion 11. Then, when the fin is inserted, the fin 10 and the heat transfer tube 20 are joined to each other through the fin collar portion 13 as will be described later. 3 and 4, C indicates a joint portion between the fin 10 and the heat transfer tube 20.

伝熱管２０は、断面形状が両端の半円と半円を直線でつなぐ扁平状の長円形状をなす中空管であり、内部は上記熱交換媒体が流通する１つ又は区画された複数の流路を有するものである。この扁平状の伝熱管２０は、その平坦面が気流方向（図２に矢印ａで示す方向）に平行になるようにフィン１０の挿入部１１に挿入される。
また、伝熱管２０の端部には、例えば図３に示すように、ヘアピン部２１が接続されている。なお、図３の他端側も同様のヘアピン部で接続されており、熱交換媒体が蛇行するように伝熱管２０内を流通するようになっている。 The heat transfer tube 20 is a hollow tube having a flat oval shape in which the cross-sectional shape connects a semicircle and a semicircle at both ends with a straight line, and the inside thereof is one or a plurality of partitioned plural tubes through which the heat exchange medium flows. It has a flow path. The flat heat transfer tube 20 is inserted into the insertion portion 11 of the fin 10 so that the flat surface thereof is parallel to the airflow direction (the direction indicated by the arrow a in FIG. 2).
Moreover, the hairpin part 21 is connected to the edge part of the heat exchanger tube 20, as shown, for example in FIG. In addition, the other end side of FIG. 3 is also connected by the same hairpin part, and distribute | circulates the inside of the heat exchanger tube 20 so that a heat exchange medium may meander.

また、図３及び図４に示すように、隣接する伝熱管２０の中心軸間の距離Ａと当該伝熱管２０の幅（厚さ）Ｂとの比率をＢ：Ａを１：３．５６乃至３．７５となすと共に、各フィン１０のフィンピッチＥを１．１５ｍｍとしたものである。これらの値は、シミュレーションにより、熱伝達率と空力圧損の影響を考慮する中で、熱交換器の性能において最適であると判断した値である。   3 and 4, the ratio of the distance A between the central axes of adjacent heat transfer tubes 20 and the width (thickness) B of the heat transfer tubes 20 is B: A from 1: 3.56 to 3.75 and the fin pitch E of each fin 10 is 1.15 mm. These values are values determined by simulation to be optimal in the performance of the heat exchanger while considering the effects of heat transfer coefficient and aerodynamic pressure loss.

図４は熱交換器３の端部（図３のＤ部）の断面を示す拡大図である。以下においては、熱交換器３の幅方向（伝熱管配列方向）の端部３ａ、３ｂに当たるフィン１０の端部を符号１０ａ、１０ｂで示すものとする。図４においては、一方（図３の下側）のフィン端部１０ｂを示している。また、図４に示すように、フィン１０の同一面側には、それぞれの挿入部（切欠き部）１１の縁部の全周に渡って伝熱管２０とフィン１０とを密着させて接合するためのフィンカラー部１３がフィン挿入の際に垂直に立ち上がるように形成される。なお、このフィンカラー部１３の高さＦは、その伝熱管と接する面積を最大にするため、フィン１０間のフィンピッチＥと同じにしている。   FIG. 4 is an enlarged view showing a cross section of the end portion (D portion in FIG. 3) of the heat exchanger 3. In the following, the end portions of the fins 10 corresponding to the end portions 3a and 3b in the width direction (heat transfer tube arrangement direction) of the heat exchanger 3 are denoted by reference numerals 10a and 10b. In FIG. 4, one (lower side in FIG. 3) fin end portion 10b is shown. Further, as shown in FIG. 4, the heat transfer tubes 20 and the fins 10 are bonded and bonded to the same surface side of the fins 10 over the entire periphery of the edge portions of the respective insertion portions (notches) 11. The fin collar portion 13 is formed so as to rise vertically when the fin is inserted. The height F of the fin collar portion 13 is the same as the fin pitch E between the fins 10 in order to maximize the area in contact with the heat transfer tube.

ここで、従来のフィン形状と本実施の形態におけるフィン形状について説明する。
図５は従来のフィン形状を示す平面図で、図６は図５のＸ−Ｘ線断面図である。図７は本実施の形態におけるフィン形状を示す平面図で、図８は図７のＹ−Ｙ線断面図である。
従来のフィン１０Ｂは、図５及び図６に示すように、フィンカラー部１３Ｂが予めそれぞれの切欠き状の挿入部１１Ｂの縁部に沿って垂直に起立して形成されている。
一方、本実施の形態では、図７及び図８に示すように、フィンとしてカラー未成形フィン１０Ａを使用するものである。すなわち、上記のようなフィンカラー部を形成することなく、つまり、切欠き状のカラー未成形挿入部１４がカラー未成形フィン１０Ａに形成された状態となっているものである。カラー未成形挿入部１４は、カラー高さＦに相当する分だけ切欠き開口幅Ｇを小さくする形で、挿入部１１となる面と同一面に平らに形成されている。また、このカラー未成形フィン１０Ａは、例えば、材質がアルミニウムで、板厚は約０．１ｍｍとなっている。 Here, the conventional fin shape and the fin shape in this Embodiment are demonstrated.
FIG. 5 is a plan view showing a conventional fin shape, and FIG. 6 is a sectional view taken along line XX of FIG. FIG. 7 is a plan view showing the fin shape in the present embodiment, and FIG. 8 is a cross-sectional view taken along line YY of FIG.
As shown in FIGS. 5 and 6, the conventional fin 10 </ b> B is formed with the fin collar portion 13 </ b> B standing upright in advance along the edge of each notch-shaped insertion portion 11 </ b> B.
On the other hand, in the present embodiment, as shown in FIGS. 7 and 8, a collar unformed fin 10A is used as the fin. That is, without forming the fin collar portion as described above, that is, the notched collar unmolded insertion portion 14 is formed in the collar unmolded fin 10A. The collar unmolded insertion portion 14 is formed flat on the same surface as the insertion portion 11 so that the notch opening width G is reduced by an amount corresponding to the collar height F. Further, the collar unmolded fin 10A is made of, for example, aluminum and has a plate thickness of about 0.1 mm.

次に、フィン１０Ｂを用いた従来の熱交換器３の製造手順について説明する。図９は伝熱管２０へのフィン挿入方法を示す説明図である。
熱交換器３を製造するには、図９に示すように、フィン１０Ｂを回動挿入治具３０のフィン吸着固定部３１に吸着させ、１枚ずつＰ方向に回動させて、フィン１０Ｂの切欠き状の挿入部１１Ｂを伝熱管２０に挿入する。そのあと、伝熱管２０をＱ方向にフィンピッチＥずつ、移動させ、さらに次のフィン１０Ｂを同様の方法で挿入していくことで、フィンピッチＥを確保しながら、熱交換器３を製作することができる。 Next, a manufacturing procedure of the conventional heat exchanger 3 using the fins 10B will be described. FIG. 9 is an explanatory view showing a method of inserting fins into the heat transfer tube 20.
In order to manufacture the heat exchanger 3, as shown in FIG. 9, the fin 10B is attracted to the fin adsorption fixing portion 31 of the rotation insertion jig 30, and rotated one by one in the P direction. The notch-shaped insertion portion 11B is inserted into the heat transfer tube 20. After that, the heat exchanger tube 20 is moved by the fin pitch E in the Q direction, and the next fin 10B is inserted by the same method, thereby producing the heat exchanger 3 while ensuring the fin pitch E. be able to.

また、熱交換器３の幅（伝熱管整列方向）を狭めるために、フィン端部１０ａ、１０ｂを倒す必要がある場合は、図１０に示すような方法で実施していた。
上述した方法で、熱交換器３を製作したあと、図１０に示すローラーからなるフィン端倒し治具３５を用いて、当該治具３５をＲ方向に回転させながらＳ方向へ移動させることで、熱交換器３のフィン端部１０ａ、１０ｂをフィンカラー部の向きとは反対のフィン挿入方向へ倒していく。 Further, when it is necessary to tilt the fin ends 10a and 10b in order to narrow the width of the heat exchanger 3 (the heat transfer tube alignment direction), the method shown in FIG. 10 is used.
After manufacturing the heat exchanger 3 by the above-described method, by using the fin end-falling jig 35 made of a roller shown in FIG. 10, the jig 35 is moved in the S direction while rotating in the R direction. The fin end portions 10a and 10b of the heat exchanger 3 are tilted in the fin insertion direction opposite to the direction of the fin collar portion.

これに対して、本実施の形態では、図１１及び図１２に示すような方法で熱交換器３を製作するものである。図１１は伝熱管へのフィン挿入過程を示す説明図で、図１２は伝熱管へのフィン挿入過程における一方のフィン端部の詳細図である。   On the other hand, in the present embodiment, the heat exchanger 3 is manufactured by a method as shown in FIGS. FIG. 11 is an explanatory view showing the fin insertion process into the heat transfer tube, and FIG. 12 is a detailed view of one fin end in the fin insertion process into the heat transfer tube.

まず、プレス加工により、図７及び図８に示したようなカラー未成形フィン（フィンカラー部を立ち上げない形で成形したフィン）１０Ａを形成する。
次に、このカラー未成形フィン１０Ａを、上記の回動挿入治具３０のフィン吸着固定部３１に吸着させ、１枚ずつＰ方向に回動させて、伝熱管２０に挿入していく。その際、図１１及び図１２に示すように、カラー未成形フィン１０Ａのカラー未成形挿入部１４間の区画部分を回動挿入治具３０で押しながら挿入する。カラー未成形挿入部１４は、切欠き開口幅Ｇが伝熱管２０の厚さＢより小さくなっているので、該挿入部１４を伝熱管２０に押し込むことで、フィン両端部１０ａ、１０ｂ以外の箇所では、該挿入部１４が伝熱管２０に当たり、かつその伝熱管２０に沿いながら、フィンカラー部１３が折れ曲がっていき、最後には垂直に立ち上がって伝熱管２０に密着する。それと同時に、フィン端部１０ａ、１０ｂのカラー未成形挿入部１４は立ち上がることなく、カラー未成形挿入部１４を中心にフィン挿入方向へ回転し倒れていく。 First, a non-colored fin (fin formed without raising the fin collar portion) 10A as shown in FIGS. 7 and 8 is formed by press working.
Next, the collar unmolded fin 10A is attracted to the fin adsorption fixing portion 31 of the rotational insertion jig 30 and rotated one by one in the P direction, and inserted into the heat transfer tube 20. At that time, as shown in FIG. 11 and FIG. 12, the partition portion between the uncolored collar insertion portions 14 of the collar unshaped fin 10 </ b> A is inserted while being pushed by the rotation insertion jig 30. Since the not-shaped opening width G of the unshaped collar insertion portion 14 is smaller than the thickness B of the heat transfer tube 20, the insertion portion 14 is pushed into the heat transfer tube 20, so that the portions other than the fin end portions 10 a and 10 b Then, the insertion portion 14 hits the heat transfer tube 20, and the fin collar portion 13 bends along the heat transfer tube 20, and finally rises vertically and comes into close contact with the heat transfer tube 20. At the same time, the collar unmolded insertion portion 14 of the fin ends 10a and 10b does not stand up and rotates in the fin insertion direction around the collar unmolded insertion portion 14 and falls down.

そして、このようにして立ち上げたフィンカラー部１３に、例えばエポキシ系の接着剤を塗布し、その熱交換器３を加熱することで、伝熱管２０とフィンカラー部１３とが密着した状態で接着接合された熱交換器３を製造することができる。   Then, for example, an epoxy adhesive is applied to the fin collar portion 13 thus started up, and the heat exchanger 3 is heated so that the heat transfer tube 20 and the fin collar portion 13 are in close contact with each other. The heat exchanger 3 bonded and bonded can be manufactured.

以上のように、この実施の形態によれば、カラー未成形フィン１０Ａを回動挿入治具３０で伝熱管２０に挿入する過程で、フィン両端部１０ａ、１０ｂをフィン挿入方向へ倒すと同時に、フィン端部１０ａ、１０ｂ以外の箇所のフィンカラー部１３を垂直に立ち上げるように形成したので、従来のようなフィンカラー部を立ち上げる工程を省くことができるため、熱交換器を安価に製造することができる。
また、同じ回動挿入治具３０を使用してフィン端部１０ａ、１０ｂをフィン挿入方向へ倒すことができるので、熱交換器３の他の部分に傷や変形を生じさせることなく、タクトタイムの減少、製造コストの低減などの効果を得ることができる。
さらに、フィン１０のフィンカラー部１３が伝熱管２０に密着した上で伝熱管２０に接着接合されているので、接着剤による伝熱性が損なわれることはなく、フィン１０と伝熱管２０の接合を容易かつ確実に行うことができる。 As described above, according to this embodiment, in the process of inserting the collar unformed fin 10A into the heat transfer tube 20 with the rotation insertion jig 30, the fin end portions 10a and 10b are simultaneously brought down in the fin insertion direction, Since the fin collar portions 13 other than the fin end portions 10a and 10b are formed so as to stand up vertically, it is possible to omit the step of raising the fin collar portions as in the prior art, so that a heat exchanger can be manufactured at low cost. can do.
Further, since the fin end portions 10a and 10b can be tilted in the fin insertion direction using the same rotational insertion jig 30, the tact time can be obtained without causing scratches or deformation in other portions of the heat exchanger 3. Thus, effects such as a reduction in manufacturing cost and a reduction in manufacturing cost can be obtained.
Furthermore, since the fin collar portion 13 of the fin 10 is in close contact with the heat transfer tube 20 and is bonded to the heat transfer tube 20, the heat transfer by the adhesive is not impaired, and the fin 10 and the heat transfer tube 20 are bonded. It can be done easily and reliably.

実施の形態２．
図１３は実施の形態２におけるフィンの伝熱管への挿入過程を示す説明図で、図１４は図１３の一方のフィン端部の詳細図である。
上記の実施の形態１では、カラー未成形フィン１０Ａを伝熱管２０に挿入する際に、図１１、図１２のようにフィン端部１０ａ、１０ｂをフィン挿入方向に倒しながら挿入していたが、本実施の形態２では、図１３に示すようにフィン端押さえ治具３６を使用することで、所定の位置でフィンカラー部１３を新たに形成し、フィン端部１０ａ、１０ｂを倒さずに挿入するようにしたものである。フィン端押さえ治具３６は、フィン端部１０ａ、１０ｂ側に壁を設けた治具であり、このような治具３６の中にカラー未成形フィン１０Ａのカラー未成形挿入部１４を伝熱管２０に押し込みながら挿入することで、すべてのカラー未成形挿入部１４のフィンカラー部１３が垂直に立ち上がって伝熱管２０に密着する。 Embodiment 2. FIG.
FIG. 13 is an explanatory view showing the process of inserting the fin into the heat transfer tube in the second embodiment, and FIG. 14 is a detailed view of one fin end of FIG.
In the first embodiment, when inserting the collar-unformed fin 10A into the heat transfer tube 20, the fin end portions 10a and 10b are inserted while being tilted in the fin insertion direction as shown in FIGS. In the second embodiment, by using the fin end pressing jig 36 as shown in FIG. 13, the fin collar portion 13 is newly formed at a predetermined position, and the fin end portions 10a and 10b are inserted without being tilted. It is what you do. The fin end pressing jig 36 is a jig provided with walls on the fin end portions 10a and 10b, and the unmolded insertion portion 14 of the collar unmolded fin 10A is inserted into the jig 36 in the heat transfer tube 20. As a result, the fin collar portions 13 of all the uncolored insertion portions 14 rise vertically and come into close contact with the heat transfer tube 20.

その後は、実施の形態１と同様に、接着剤をフィンカラー部１３に塗布した後、フィン端部１０ａ、１０ｂをフィン端押さえ治具３６に固定したまま、熱交換器３を加熱することで、伝熱管２０とフィンカラー部１３とが密着した状態で熱交換器３を製造することができる。   Thereafter, as in the first embodiment, after the adhesive is applied to the fin collar portion 13, the heat exchanger 3 is heated while the fin end portions 10 a and 10 b are fixed to the fin end pressing jig 36. The heat exchanger 3 can be manufactured in a state where the heat transfer tube 20 and the fin collar portion 13 are in close contact with each other.

この実施の形態２によれば、実施の形態１による効果に加えて、フィン端押さえ治具３６を用いることで、簡単な段取り操作でフィン端部１０ａ、１０ｂを倒すことなくすべてのフィンカラー部１３を垂直に立ち上げることができるので、所定の幅の熱交換器や機種の変更等に速やかに対応できるという効果がある。   According to the second embodiment, in addition to the effects of the first embodiment, by using the fin end pressing jig 36, all fin collar portions can be obtained without defeating the fin end portions 10a and 10b by a simple setup operation. 13 can be started up vertically, so that there is an effect that a heat exchanger having a predetermined width, a change in model, etc. can be quickly handled.

１ 空気調和機、２ 本体、３ 熱交換器、３ａ、３ｂ 熱交換器の端部、４ 送風機、５ 吸込口、６ フィルター、７ 吹出口、１０ フィン、１０ａ、１０ｂ フィン端部、１０Ａ カラー未成形フィン、１１ 挿入部（切欠き部）、１２ スリット、１３ フィンカラー部、１４ カラー未成形挿入部、２０ 伝熱管、２１ ヘアピン部、３０ 回動挿入治具、３１ フィン吸着固定部、３５ フィン端倒し治具、３６ フィン端押さえ治具。   DESCRIPTION OF SYMBOLS 1 Air conditioner, 2 Main body, 3 Heat exchanger, 3a, 3b End part of heat exchanger, 4 Blower, 5 Inlet, 6 Filter, 7 Outlet, 10 Fin, 10a, 10b Fin end, 10A Color not yet Molded fin, 11 Insertion part (notch part), 12 Slit, 13 Fin collar part, 14 Color unmolded insertion part, 20 Heat transfer tube, 21 Hairpin part, 30 Rotation insertion jig, 31 Fin adsorption fixing part, 35 Fin Ending jig, 36 Fin end holding jig.

Claims (6)

並列に配設され、内部を熱交換媒体が流通する複数の扁平状の伝熱管と、
前記伝熱管に直交する方向に所定の間隔をおいて積層状態に挿入され、切欠き状の挿入部を有する複数の平板状のフィンと、
を備えた熱交換器であって、
前記フィンは、前記挿入部に前記伝熱管と密着するフィンカラー部を有し、
前記フィンカラー部が前記伝熱管に接着接合されている
ことを特徴とする熱交換器。 A plurality of flat heat transfer tubes arranged in parallel and through which a heat exchange medium flows;
A plurality of plate-like fins inserted in a laminated state at a predetermined interval in a direction perpendicular to the heat transfer tube, and having a notch-like insertion portion;
A heat exchanger comprising:
The fin has a fin collar portion in close contact with the heat transfer tube in the insertion portion,
The heat exchanger according to claim 1, wherein the fin collar portion is bonded to the heat transfer tube. 前記フィンは、前記切欠き状の挿入部が形成された状態で、該挿入部を前記伝熱管に押し込みながら挿入することで、当該フィンに対して垂直に立ち上がるフィンカラー部が形成される
ことを特徴とする請求項１記載の熱交換器。 The fin is formed in a state where the notch-shaped insertion portion is formed, and the fin collar portion rising perpendicular to the fin is formed by inserting the insertion portion while pushing the insertion portion into the heat transfer tube. The heat exchanger according to claim 1, wherein 熱交換器の幅方向端部に当たるフィン両端部は、前記伝熱管に挿入する過程で挿入方向に倒れ、
前記フィン両端部以外の箇所のフィンは、当該フィンに対し垂直に立ち上がるフィンカラー部が形成される
ことを特徴とする請求項２記載の熱交換器。 Both ends of the fin that hit the width direction end of the heat exchanger fall in the insertion direction in the process of inserting into the heat transfer tube,
The heat exchanger according to claim 2, wherein fins at portions other than both ends of the fin are formed with fin collar portions that rise perpendicularly to the fin. 吸込口及び吹出口を有する本体と、前記本体内部に空気調和手段として熱交換器及び送風機とを備えた空気調和機において、
前記熱交換器として、請求項１〜３のいずれかに記載の熱交換器を用いることを特徴とする空気調和機。 In an air conditioner including a main body having a suction port and an air outlet, and a heat exchanger and a blower as air conditioning means inside the main body,
An air conditioner using the heat exchanger according to any one of claims 1 to 3 as the heat exchanger. 並列に配設され、内部を熱交換媒体が流通する複数の扁平状の伝熱管と、
前記伝熱管に直交する方向に所定の間隔をおいて積層状態に挿入され、切欠き状の挿入部を有する複数の平板状のフィンと、
を備えた熱交換器の製造方法において、
前記挿入部にフィンカラー部を立ち上げない状態で形成したカラー未成形フィンを形成する工程と、
前記カラー未成形フィンのカラー未成形挿入部を、前記伝熱管に治具を用いて押し込むことにより、フィンカラー部を前記カラー未成形フィンに対して垂直に立ち上げて前記伝熱管に密着させる工程と、
前記密着させたフィンカラー部を前記伝熱管に接着接合する工程と、
を有することを特徴とする熱交換器の製造方法。 A plurality of flat heat transfer tubes arranged in parallel and through which a heat exchange medium flows;
A plurality of plate-like fins inserted in a laminated state at a predetermined interval in a direction perpendicular to the heat transfer tube, and having a notch-like insertion portion;
In the manufacturing method of the heat exchanger provided with
Forming a color unmolded fin formed in a state where the fin collar portion is not raised in the insertion portion;
The step of bringing the fin collar portion upright with respect to the color unmolded fin and bringing it into close contact with the heat transfer tube by pushing the collar unmolded insertion portion of the collar unmolded fin into the heat transfer tube using a jig. When,
Adhering and bonding the closely attached fin collar part to the heat transfer tube;
A method for producing a heat exchanger, comprising: 前記伝熱管に直交する方向に所定の間隔をおいて積層状態に挿入され、切欠き状の挿入部を有する複数の平板状のフィンと、
を備えた熱交換器の製造方法において、
前記挿入部にフィンカラー部を立ち上げない状態で形成したカラー未成形フィンを形成する工程と、
前記カラー未成形フィンのカラー未成形挿入部を、前記伝熱管に治具を用いて押し込むことにより、前記熱交換器の幅方向端部に当たるフィン両端部以外の箇所のフィンカラー部を前記カラー未成形フィンに対して垂直に立ち上げて前記伝熱管に密着させるとともに、前記フィン両端部をフィン挿入方向へ倒す工程と、
前記密着させたフィンカラー部を前記伝熱管に接着接合する工程と、
を有することを特徴とする熱交換器の製造方法。 A plurality of plate-like fins inserted in a laminated state at a predetermined interval in a direction perpendicular to the heat transfer tube, and having a notch-like insertion portion;
In the manufacturing method of the heat exchanger provided with
Forming a color unmolded fin formed in a state where the fin collar portion is not raised in the insertion portion;
The uncolored fin insertion portion of the uncolored fin is pushed into the heat transfer tube using a jig, so that the fin collar portions other than the fin end portions corresponding to the end portions in the width direction of the heat exchanger are uncolored. A step of raising the fins vertically with respect to the molded fins and bringing them into close contact with the heat transfer tube, and tilting both ends of the fins in the fin insertion direction;
Adhering and bonding the closely attached fin collar part to the heat transfer tube;
A method for producing a heat exchanger, comprising:
JP2011050040A 2011-03-08 2011-03-08 Manufacturing method of heat exchanger Active JP5725914B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014152955A (en) * 2013-02-06 2014-08-25 Mitsubishi Electric Corp Heat exchanger, manufacturing device of the same, and manufacturing method of the same
WO2015041216A1 (en) * 2013-09-20 2015-03-26 三菱電機株式会社 Heat exchanger, air conditioner using said heat exchanger, and manufacturing method of said heat exchanger

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0245374U (en) * 1988-09-09 1990-03-28
JPH0560482A (en) * 1991-08-29 1993-03-09 Showa Alum Corp Manufacture of heat exchanger
JPH0590173U (en) * 1992-04-20 1993-12-07 住友軽金属工業株式会社 Fin tube heat exchanger
JP3014703U (en) * 1995-02-13 1995-08-15 東京ラヂエーター製造株式会社 Plate fin type heat exchanger core structure
JPH08247678A (en) * 1995-03-10 1996-09-27 Nagano Haruo Heat-exchanger made of aluminum
JPH09141353A (en) * 1995-11-17 1997-06-03 Matsushita Refrig Co Ltd Manufacture of fin and tube type heat exchanger
JPH09324995A (en) * 1996-06-05 1997-12-16 Toshiba Corp Heat exchanger
JPH1078296A (en) * 1996-09-03 1998-03-24 Nippon Light Metal Co Ltd Heat exchanger
JPH10238981A (en) * 1997-02-24 1998-09-11 Sanyo Electric Co Ltd Heat exchanger
JP2000051980A (en) * 1998-08-07 2000-02-22 Hitachi Ltd Cross fin type heat exchanger and its production
JP2002139282A (en) * 2000-10-31 2002-05-17 Mitsubishi Electric Corp Heat exchanger, refrigerating air conditioner and manufacturing method of heat exchanger
JP2006214702A (en) * 2005-02-07 2006-08-17 Denso Corp Heat exchanger, method of manufacturing heat exchanger, and plate-shaped fin for heat exchanger
JP2009036428A (en) * 2007-08-01 2009-02-19 Denso Corp Method of manufacturing heat exchanger
JP2011127867A (en) * 2009-12-21 2011-06-30 Mitsubishi Electric Corp Heat exchanger fin, heat exchanger, and method for manufacturing the same

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0245374U (en) * 1988-09-09 1990-03-28
JPH0560482A (en) * 1991-08-29 1993-03-09 Showa Alum Corp Manufacture of heat exchanger
JPH0590173U (en) * 1992-04-20 1993-12-07 住友軽金属工業株式会社 Fin tube heat exchanger
JP3014703U (en) * 1995-02-13 1995-08-15 東京ラヂエーター製造株式会社 Plate fin type heat exchanger core structure
JPH08247678A (en) * 1995-03-10 1996-09-27 Nagano Haruo Heat-exchanger made of aluminum
JPH09141353A (en) * 1995-11-17 1997-06-03 Matsushita Refrig Co Ltd Manufacture of fin and tube type heat exchanger
JPH09324995A (en) * 1996-06-05 1997-12-16 Toshiba Corp Heat exchanger
JPH1078296A (en) * 1996-09-03 1998-03-24 Nippon Light Metal Co Ltd Heat exchanger
JPH10238981A (en) * 1997-02-24 1998-09-11 Sanyo Electric Co Ltd Heat exchanger
JP2000051980A (en) * 1998-08-07 2000-02-22 Hitachi Ltd Cross fin type heat exchanger and its production
JP2002139282A (en) * 2000-10-31 2002-05-17 Mitsubishi Electric Corp Heat exchanger, refrigerating air conditioner and manufacturing method of heat exchanger
JP2006214702A (en) * 2005-02-07 2006-08-17 Denso Corp Heat exchanger, method of manufacturing heat exchanger, and plate-shaped fin for heat exchanger
JP2009036428A (en) * 2007-08-01 2009-02-19 Denso Corp Method of manufacturing heat exchanger
JP2011127867A (en) * 2009-12-21 2011-06-30 Mitsubishi Electric Corp Heat exchanger fin, heat exchanger, and method for manufacturing the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014152955A (en) * 2013-02-06 2014-08-25 Mitsubishi Electric Corp Heat exchanger, manufacturing device of the same, and manufacturing method of the same
WO2015041216A1 (en) * 2013-09-20 2015-03-26 三菱電機株式会社 Heat exchanger, air conditioner using said heat exchanger, and manufacturing method of said heat exchanger
WO2015040746A1 (en) * 2013-09-20 2015-03-26 三菱電機株式会社 Heat exchanger, air conditioner device using said heat exchanger, and method for producing said heat exchanger
US10215503B2 (en) 2013-09-20 2019-02-26 Mistubishi Electric Corporation Heat exchanger, air-conditioning apparatus using the same and method of manufacturing the same

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