JP6672890B2 - Heat exchanger - Google Patents

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JP6672890B2
JP6672890B2 JP2016038266A JP2016038266A JP6672890B2 JP 6672890 B2 JP6672890 B2 JP 6672890B2 JP 2016038266 A JP2016038266 A JP 2016038266A JP 2016038266 A JP2016038266 A JP 2016038266A JP 6672890 B2 JP6672890 B2 JP 6672890B2
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end side
tab portion
fin
hole
tab
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JP2017155988A (en
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昌春 深谷
昌春 深谷
伊藤　俊太郎
俊太郎 伊藤
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Fujitsu General Ltd
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Description

本発明は、伝熱管とフィンとを備え、伝熱管内を流れる流体を空気と熱交換させる熱交換器に関するものである。   The present invention relates to a heat exchanger that includes a heat transfer tube and fins, and that exchanges fluid flowing in the heat transfer tube with air.

伝熱管とフィンとを備えた熱交換器が知られている。この熱交換器では、複数の板状のフィンが互いに所定の間隔をおいて平行に左右方向に積層されている。この積層されたフィン夫々に直交するように挿入された複数の伝熱管が、互いに一定の間隔をおいて上下に並んで配置されている。フィンの表面の風上側と風下側には、フィン同士の間隔を整えるために、フィンの一部を切り起こして形成されるタブ部が設けられている。このタブ部が隣接するフィンと接することで、フィン同士の間隔を整えることができる。   A heat exchanger provided with a heat transfer tube and a fin is known. In this heat exchanger, a plurality of plate-like fins are stacked in parallel in the left-right direction at a predetermined interval. A plurality of heat transfer tubes inserted orthogonally to each of the stacked fins are arranged vertically above and below at a certain interval. Tab portions formed by cutting and raising a part of the fin are provided on the leeward and leeward sides of the surface of the fin in order to adjust the interval between the fins. When the tab portion comes into contact with the adjacent fin, the interval between the fins can be adjusted.

さらに、熱交換器の熱交換能力を上げるために、タブ部をスリット形状にしたいわゆるスリットフィンがある。このタブ部は、フィンの上下方向に１対の切り込みを入れて、タブ部の一端と他端がフィンと接続した状態で切り起こされている。このタブ部を切り起こした後のフィンには孔が形成される。上述のようにフィンを積層すると、このタブ部が孔に入り込むため、フィンの間隔を整えることができない。そこで、特許文献１では、隣接するフィンに形成されるタブ部同士を向い合せにして、このタブ部同士を接触させることでタブ部が孔に入り込むことを防ぎフィンの間隔を整えている。   Further, there is a so-called slit fin in which a tab portion has a slit shape in order to increase the heat exchange capacity of the heat exchanger. The tab is cut and raised with a pair of cuts made in the vertical direction of the fin and one end and the other end of the tab connected to the fin. A hole is formed in the fin after cutting and raising the tab portion. When the fins are stacked as described above, the tabs enter the holes, so that the fin spacing cannot be adjusted. Therefore, in Patent Document 1, the tab portions formed on the adjacent fins are opposed to each other, and the tab portions are brought into contact with each other to prevent the tab portions from entering the holes, thereby adjusting the interval between the fins.

特開２００５−１１４３０７号公報JP 2005-114307 A

しかし、この方法ではタブ部同士を向い合せにするために、２種類のフィンを用意する必要がある。そのため、コストが増加し、生産性も悪くなる問題があった。   However, in this method, it is necessary to prepare two types of fins so that the tab portions face each other. For this reason, there has been a problem that the cost increases and the productivity deteriorates.

そこで、本発明は、フィンの間隔を整えるタブ部をスリット形状にすると共に、１種類のフィンだけでフィンピッチを確保できるようにした熱交換器を提供することを目的とする。   Therefore, an object of the present invention is to provide a heat exchanger in which a tab portion for adjusting the interval between fins has a slit shape and a fin pitch can be ensured with only one type of fin.

上述した問題を解決するために、本発明は、上下に配列される複数の伝熱管と、複数の伝熱管と交差させ、左右に配列される板状の複数のフィンと、上下に隣り合う伝熱管と、左右に隣り合うフィンに囲まれた複数の通風路を有する熱交換器であって、フィンには隣接するフィンに接するタブ部と、孔部があり、タブ部はその一端部と他端部がフィンと連続し、また一端部と他端部以外の部分はフィンと離間し、タブ部は、一端部を含む一端側タブ部と、他端部を含む他端側タブ部を有し、孔部は一端部が連続する一端側孔部と、他端部が連続する他端側孔部を有し、一端側孔部と他端側孔部が孔部頂部で連続し、一端側タブ部と他端側タブ部がタブ部頂部で連続し、一端側タブ部の幅と他端側タブ部の幅が異なり、タブ部頂部の位置が、孔部頂部の位置よりも一端側孔部と他端側孔部のうち幅が狭い方に寄っていることを特徴とする。
In order to solve the above-described problem, the present invention provides a plurality of heat transfer tubes arranged vertically, a plurality of plate-shaped fins arranged crosswise to the plurality of heat transfer tubes, and arranged vertically, A heat exchanger having a heat pipe and a plurality of ventilation paths surrounded by fins adjacent to each other on the left and right sides, wherein the fin has a tab portion in contact with an adjacent fin and a hole, and the tab portion has one end portion and another portion. The end portion is continuous with the fin, and the portion other than the one end portion and the other end portion is separated from the fin, and the tab portion has one end side tab portion including one end portion and the other end side tab portion including the other end portion. The hole has one end side hole where one end is continuous, and the other end side hole where the other end is continuous, and the one end side hole and the other end side hole are continuous at the top of the hole. The side tab portion and the other end side tab portion are continuous at the tab portion top portion, the width of the one end side tab portion and the width of the other end side tab portion are different, and the position of the tab portion top portion is a hole. Wherein the width of the one end side hole and the other end side hole is closer to narrower than the position of the top.

また、タブ部が、通風方向に沿って形成され、一端側タブ部または他端側タブ部のどちらか一方が、タブ部とフィンが連続する端を底辺とし、タブ部の中央付近を頂部とした多角形状に形成されていることを特徴とする。   Further, the tab portion is formed along the ventilation direction, and one of the one end side tab portion and the other end side tab portion has an end where the tab portion and the fin are continuous as a bottom side, and a vicinity of the center of the tab portion as a top portion. It is characterized by being formed in a polygonal shape.

本発明の熱交換器によれば、フィンの間隔を整えるタブ部をスリット形状に形成させると共に、１種類のフィンだけでフィンピッチを確保できる。   ADVANTAGE OF THE INVENTION According to the heat exchanger of this invention, while forming the tab part which adjusts the space | interval of a fin in a slit shape, a fin pitch can be ensured only by one kind of fin.

本発明にかかる熱交換器の全体を示した斜視図である。It is the perspective view which showed the whole heat exchanger concerning this invention. 本発明にかかる熱交換器の全体を示した正面図である。It is the front view which showed the whole heat exchanger concerning this invention. 図２の切断線Ａ−Ａにおける断面図である。FIG. 3 is a sectional view taken along a cutting line AA in FIG. 2. （ａ）は図３の切断線Ｂ−Ｂにおける断面図である。（ｂ）は（ａ）が切り起こされる前の断面図である。FIG. 4A is a sectional view taken along a cutting line BB in FIG. 3. (B) is a sectional view before (a) is cut and raised. （ａ）はタブ部の斜視図である。（ｂ）タブ部の断面図である。（ｃ）はタブ部と孔部を上方から示した図である。(A) is a perspective view of a tab part. (B) It is sectional drawing of a tab part. (C) is a diagram showing the tab portion and the hole portion from above.

本発明の実施形態に関する熱交換器１００は、図１と図２に示すように、フィン１２０と扁平管１３０を備えた熱交換器である。   The heat exchanger 100 according to the embodiment of the present invention is a heat exchanger including a fin 120 and a flat tube 130 as shown in FIGS.

熱交換器１００は、第１ヘッダ１１０ａと、第２ヘッダ１１０ｂと、複数の扁平管１３０と、複数のフィン１２０とを備えている。第１ヘッダ１１０ａ、第２ヘッダ１１０ｂ、扁平管１３０、フィン１２０はいずれもアルミニウム合金製の部材であり、各々の接合は蝋付けによって行われている。   The heat exchanger 100 includes a first header 110a, a second header 110b, a plurality of flat tubes 130, and a plurality of fins 120. Each of the first header 110a, the second header 110b, the flat tube 130, and the fin 120 is a member made of an aluminum alloy, and each of them is joined by brazing.

第１ヘッダ１１０ａと第２ヘッダ１１０ｂは、両方とも長手方向の両端が閉鎖された細長い円筒状に形成されている。熱交換器１００の一端側に第１ヘッダ１１０ａが配置され、熱交換器１００の他端側に第２ヘッダ１１０ｂが配置される。なお、第１ヘッダ１１０ａと第２ヘッダ１１０ｂのそれぞれの長手方向を熱交換器１００の上下方向とする。   Both the first header 110a and the second header 110b are formed in an elongated cylindrical shape having both ends in the longitudinal direction closed. A first header 110a is arranged at one end of the heat exchanger 100, and a second header 110b is arranged at the other end of the heat exchanger 100. The longitudinal direction of each of the first header 110a and the second header 110b is defined as the vertical direction of the heat exchanger 100.

扁平管１３０は多孔構造であり、断面形状が長円形あるいは角の丸い矩形となった伝熱管であり、後述するフィン１２０と直交する方向に延びている。また、扁平管１３０には、冷媒が流れる冷媒流路が複数本配置され、この冷媒流路は扁平管１３０の長手方向の一端と他端の間に、長手方向の一端から他端にかけて延びて形成され、扁平管１３０の幅方向に等間隔で配置されている。熱交換器１００において、各扁平管１３０は、各々の上側の面と下側の面が対向するように、熱交換器１００の熱交換能力と通風抵抗などを考慮して決定した間隔である第１の間隔ｄ１をおいて上下に並んで配置されている。各扁平管１３０は、一端を第１ヘッダ１１０ａに挿入し、他端を第２ヘッダ１１０ｂに挿入している。なお、扁平管１３０の長手方向を左右方向とする。   The flat tube 130 has a porous structure, is a heat transfer tube having a cross-sectional shape of an ellipse or a rounded rectangle, and extends in a direction orthogonal to the fins 120 described later. In the flat tube 130, a plurality of refrigerant channels through which the refrigerant flows are arranged, and the refrigerant channel extends between one end and the other end in the longitudinal direction of the flat tube 130 and extends from one end to the other end in the longitudinal direction. It is formed and arranged at equal intervals in the width direction of the flat tube 130. In the heat exchanger 100, each flat tube 130 has a distance determined in consideration of the heat exchange capacity and the ventilation resistance of the heat exchanger 100 such that the upper surface and the lower surface face each other. They are arranged one above the other with an interval d1. Each flat tube 130 has one end inserted into the first header 110a and the other end inserted into the second header 110b. In addition, let the longitudinal direction of the flat tube 130 be a left-right direction.

フィン１２０は、金属板をプレス加工することによって、縦長の板形状に形成されている。フィン１２０には、図３に示すように、フィン１２０の短手方向の一端からフィン１２０の短手方向の他端に向かって延びる横長の切り欠き部１４０が、フィン１２０の長手方向（上下方向）に所定の間隔をおいて多数形成されている。この切り欠き部１４０に扁平管１３０が差し込まれることで、扁平管１３０は上下方向に第１の間隔ｄ１をおいて配置される。また、フィン１２０は、図１に示すように、扁平管１３０の長手方向（左右方向）に熱交換器１００の熱交換能力と通風抵抗などを考慮して決定した間隔である第２の間隔ｄ２をおいて複数枚配置される。図２に示すように、上下に隣り合う扁平管１３０と、左右に隣り合うフィン１２０に囲まれた通風路１５０が、上下方向と左右方向それぞれに複数並んで形成される。なお、図２では複数の通風路１５０のうち１つを代表して図示している。フィン１２０と扁平管１３０は互いに直交しており、図３に示すように、フィン１２０の表面のうち、複数の通風路の一つと接すると共に、上下に隣り合う扁平管１３０の間に位置する面が、斜線の矢印で示す空気と熱交換する伝熱部１２１となる。また、フィン１２０の一部で切欠き部１４０よりフィン１２０の他端側にある面が、フィン１２０の上端１２０ａから下端１２０ｂまで連続して形成された流水部（連通部）１２２となる。なお、斜線の矢印がある側を風上側、反対側を風下側とする。   The fin 120 is formed in a vertically long plate shape by pressing a metal plate. As shown in FIG. 3, the fin 120 has a horizontally elongated cutout 140 extending from one end of the fin 120 in the short direction to the other end of the fin 120 in the short direction. ) Are formed at predetermined intervals. By inserting the flat tube 130 into the notch 140, the flat tube 130 is arranged at a first interval d1 in the vertical direction. Further, as shown in FIG. 1, the fins 120 have a second interval d2 in the longitudinal direction (left-right direction) of the flat tube 130 which is an interval determined in consideration of the heat exchange capacity and the ventilation resistance of the heat exchanger 100 and the like. And a plurality of them are arranged. As shown in FIG. 2, a plurality of flat tubes 130 vertically adjacent to each other and a plurality of ventilation paths 150 surrounded by fins 120 horizontally adjacent to each other are formed side by side in the vertical and horizontal directions. Note that FIG. 2 shows one of the plurality of ventilation paths 150 as a representative. The fin 120 and the flat tube 130 are orthogonal to each other, and as shown in FIG. 3, among the surfaces of the fin 120, a surface that is in contact with one of the plurality of ventilation passages and that is located between the vertically adjacent flat tubes 130. Are the heat transfer units 121 that exchange heat with the air indicated by the hatched arrows. Further, a part of the fin 120 on the other end side of the fin 120 with respect to the notch portion 140 becomes a flowing water portion (communication portion) 122 continuously formed from the upper end 120a to the lower end 120b of the fin 120. The side with the hatched arrow is the leeward side, and the opposite side is the leeward side.

フィン１２０には、図３に示すように、フィン１２０の一部を扁平管１３０よりも風上側に延長して突き出した突出し部１７０が設けられている。突出し部１７０には、フィン１２０同士の間隔を整えるためのタブ部１６０が設けられる。このタブ部１６０はフィン１２０に通風方向に対して並列に２本の切り込みを入れて切り起こし、通風路１５０に向けて立ち上げたものである。タブ部１６０は通風方向の両端でフィン１２０と連続し、図５に示すように、タブ部１６０を立ち上げた後のフィン１２０には孔部１６４が形成される。タブ部１６０は、通風方向の風上側に形成される一端側タブ部１６１と風下側に形成される他端側タブ部１６２を有する。一端側タブ部１６１はタブ部１６０とフィン１２０が連続する両端のうち一端部である風上側端部１６０ａでフィン１２０と連続し、通風方向に細長い長方形状に形成される。他端側タブ部１６２はタブ部１６０とフィン１２０が連続する両端のうち他端部である風下側端部１６０ｂでフィン１２０と連続している。さらに、他端側タブ部１６２は一端側タブ部１６１と連続する箇所をタブ部頂部１６３とし、風下側端部１６０ｂを底辺とした三角形状に形成される。一方、孔部１６４も一端側孔部１６６と他端側孔部１６７を有する。一端側孔部１６６は一端側タブ部１６１を立ち上げることにより形成された孔であり、通風方向に細長い長方形状に形成される。他端側孔部１６７は他端側タブ部１６２を立ち上げることにより形成された孔であり、一端側孔部１６６と連続する箇所を孔部頂部１６５とし、他端側タブ部１６２とフィン１２０が連続する辺を底辺とした三角形状に形成される。図５に示すように、フィン１２０を上下方向から見たとき、他端側タブ部１６２のタブ部頂部１６３は、他端側孔部１６７の孔部頂部１６５よりも通風方向の風上側に位置するように他端側タブ部１６２が通風方向に延出されながら、立ち上げられている。つまり、一端側タブ部の幅と他端側タブ部の幅が異なり、タブ部頂部の位置が、孔部頂部の位置よりも一端側孔部１６６と他端側孔部１６７のうち幅が狭い方に寄っている。これにより、フィン１２０を積層してタブ部１６０が隣接するフィン１２０に接したとき、このタブ部頂部１６３より幅が拡がる他端側タブ部１６２の両側が、一端側孔部１６６の周縁に当接するため、タブ部１６０によってフィン１２０同士の間隔を整えることができる。また、他端側タブ部１６２が三角形状に形成されることでデルタ翼として機能し、熱交換器１００の熱交換効率を向上させることができる。なお、他端側タブ部１６２に風下側からフィン１２０に渡ってリブを形成して、タブ部１６０の強度を上げてもよい。   As shown in FIG. 3, the fin 120 is provided with a protruding portion 170 that partially extends from the flat tube 130 to the windward side and protrudes. The protruding portion 170 is provided with a tab portion 160 for adjusting the interval between the fins 120. The tab portion 160 is formed by cutting two fins 120 in parallel in the ventilation direction and cutting and raising the fins 120 toward the ventilation path 150. The tab portion 160 is continuous with the fin 120 at both ends in the ventilation direction, and as shown in FIG. 5, a hole 164 is formed in the fin 120 after the tab portion 160 is raised. The tab portion 160 has one end side tab portion 161 formed on the windward side in the ventilation direction and the other end side tab portion 162 formed on the leeward side. The one end side tab part 161 is continuous with the fin 120 at the windward end part 160a which is one end of both ends where the tab part 160 and the fin 120 are continuous, and is formed in a rectangular shape elongated in the ventilation direction. The other end side tab portion 162 is continuous with the fin 120 at a leeward end portion 160b, which is the other end portion, of both ends where the tab portion 160 and the fin 120 are continuous. Further, the other end side tab portion 162 is formed in a triangular shape having a portion continuous with the one end side tab portion 161 as the tab top portion 163 and the leeward end portion 160b as the bottom side. On the other hand, the hole 164 also has one end side hole 166 and the other end side hole 167. The one end side hole portion 166 is a hole formed by raising the one end side tab portion 161 and is formed in a rectangular shape elongated in the ventilation direction. The other end side hole portion 167 is a hole formed by raising the other end side tab portion 162, a portion continuous with the one end side hole portion 166 is defined as a hole top portion 165, and the other end side tab portion 162 and the fin 120 are formed. Are formed in a triangular shape with the continuous side as the base. As shown in FIG. 5, when the fin 120 is viewed from above and below, the tab top 163 of the other end side tab 162 is located on the windward side of the hole top 165 of the other end side hole 167 in the ventilation direction. The other end side tab portion 162 is raised while extending in the ventilation direction. In other words, the width of the one end side tab portion and the width of the other end side tab portion are different, and the position of the tab portion top is smaller than the position of the hole top portion between the one end side hole 166 and the other end side hole 167. Is approaching. Thus, when the fins 120 are stacked and the tab portion 160 comes into contact with the adjacent fin 120, both sides of the other end side tab portion 162, which is wider than the tab portion top portion 163, contact the periphery of the one end side hole 166. Since they are in contact with each other, the interval between the fins 120 can be adjusted by the tab portion 160. Further, since the other end side tab portion 162 is formed in a triangular shape, it functions as a delta wing, and the heat exchange efficiency of the heat exchanger 100 can be improved. Note that a rib may be formed on the other end side tab portion 162 from the leeward side to the fin 120 to increase the strength of the tab portion 160.

なお、タブ部１６０がフィン１２０の間隔を整えやすいように、本実施形態ではフィン１２０の通風方向の風上側端部近くである突出し部１７０にタブ部１６０を形成しているが、本発明はこれに限定したものではなく、タブ部１６０はフィン１２０上であればどこでもよく、適宜変更しても良い。また、本実施例のタブ部１６０は通風方向を向いているが、本発明はこれに限定したものではなく、適宜変更しても良い。   In this embodiment, the tab 160 is formed in the protrusion 170 near the windward end of the fin 120 in the ventilation direction so that the tab 160 can easily adjust the interval between the fins 120. The present invention is not limited to this, and the tab 160 may be anywhere on the fin 120 and may be changed as appropriate. Further, although the tab portion 160 of the present embodiment is oriented in the ventilation direction, the present invention is not limited to this, and may be changed as appropriate.

なお、本実施形態では、他端側タブ部１６２が三角形状に形成されているが、本発明はこれに限定したものではなく、一端側タブ部１６１が三角形状に形成されていてもよい。また、本発明は一端側タブ部１６１または他端側タブ部１６２が三角形状であることに限定したものではなく、多角形状に適宜変更してもよい。   In the present embodiment, the other end side tab portion 162 is formed in a triangular shape, but the present invention is not limited to this, and the one end side tab portion 161 may be formed in a triangular shape. Further, the present invention is not limited to the one end side tab portion 161 or the other end side tab portion 162 having a triangular shape, and may be appropriately changed to a polygonal shape.

以上より、本発明は、フィン１２０に一端側タブ部１６１と他端側タブ部１６２を備えたタブ部１６０を形成することで、１種類のフィン１２０でフィン同士の間隔を整えることができる。   As described above, according to the present invention, by forming the tab portion 160 having the one end side tab portion 161 and the other end side tab portion 162 on the fin 120, the fins can be arranged with one type of fin 120.

１００ 熱交換器
１２０ フィン
１３０ 扁平管
１６０ タブ部 Reference Signs List 100 heat exchanger 120 fin 130 flat tube 160 tab part

Claims (2)

上下に配列される複数の伝熱管と、
前記複数の伝熱管と交差させ、左右に配列される板状の複数のフィンと、
上下に隣り合う前記伝熱管と、左右に隣り合う前記フィンに囲まれた複数の通風路を有する熱交換器であって、
前記フィンには隣接するフィンに接するタブ部と、孔部があり、
前記タブ部はその一端部と他端部が前記フィンと連続し、また前記一端部と前記他端部以外の部分は前記フィンと離間し、
前記タブ部は、前記一端部を含む一端側タブ部と、前記他端部を含む他端側タブ部を有し、
前記孔部は前記一端部が連続する一端側孔部と、前記他端部が連続する他端側孔部を有し、
前記一端側孔部と前記他端側孔部が孔部頂部で連続し、
前記一端側タブ部と前記他端側タブ部がタブ部頂部で連続し、
前記一端側タブ部の幅と前記他端側タブ部の幅が異なり、
前記タブ部頂部の位置が、前記孔部頂部の位置よりも前記一端側孔部と前記他端側孔部のうち幅が狭い方に寄っていることを特徴とする熱交換器。 A plurality of heat transfer tubes arranged vertically,
A plurality of plate-like fins intersecting with the plurality of heat transfer tubes and arranged on the left and right,
A heat exchanger having a plurality of ventilation paths surrounded by the heat transfer tubes vertically adjacent to each other and the fins horizontally adjacent to each other,
The fin has a tab portion in contact with an adjacent fin, and a hole,
One end and the other end of the tab portion are continuous with the fin, and portions other than the one end and the other end are separated from the fin,
The tab portion has one end side tab portion including the one end portion, and the other end side tab portion including the other end portion,
The hole has one end side hole where the one end is continuous, and the other end side hole where the other end is continuous,
The one end side hole and the other end side hole are continuous at the top of the hole,
The one end side tab portion and the other end side tab portion are continuous at the tab portion top portion,
The width of the one end side tab portion and the width of the other end side tab portion are different,
The heat exchanger according to claim 1, wherein a position of the tab top is closer to a narrower one of the one end side hole and the other end side hole than the position of the hole top. 前記タブ部が、通風方向に沿って形成され、
前記一端側タブ部または前記他端側タブ部のどちらか一方が、
前記タブ部と前記フィンが連続する端を底辺とし、前記タブ部の中央付近を頂部とした多角形状に形成されていることを特徴とする請求項１に記載の熱交換器。
The tab portion is formed along a ventilation direction,
Either the one end side tab portion or the other end side tab portion,
2. The heat exchanger according to claim 1, wherein the heat exchanger is formed in a polygonal shape with an end where the tab portion and the fin are continuous as a base and a center near the center of the tab portion as a top. 3.
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