JP6569517B2 - Heat exchanger - Google Patents

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JP6569517B2
JP6569517B2 JP2015251888A JP2015251888A JP6569517B2 JP 6569517 B2 JP6569517 B2 JP 6569517B2 JP 2015251888 A JP2015251888 A JP 2015251888A JP 2015251888 A JP2015251888 A JP 2015251888A JP 6569517 B2 JP6569517 B2 JP 6569517B2
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spacer
heat exchanger
fin
fins
end point
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JP2017116175A (en
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佑 廣崎
佑 廣崎
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Fujitsu General Ltd
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Description

本発明は、空気調和機等に用いられる熱交換器に関する。   The present invention relates to a heat exchanger used for an air conditioner or the like.

従来、フィンチューブ型熱交換器のフィン（放熱板）には、フィン同士の間隔を適正に保つために、フィンの一部を切り起こして形成されるスペーサが設けられている。図８の（ａ）に示すように、フィン１０１の一部を切り起こして形成されるスペーサ１０２は、その先端面が隣接するフィン１０１の表面に当接することで、フィン１０１同士の間隔を適正に保つが、図８の（ｂ）に示すように、このスペーサ１０２が隣接するフィン１０１の切り起こし孔１０３に嵌り込むと、フィン１０１同士の間隔を適正に保つことができないだけでなく、その後の修正に手間がかかり、組立性が低下するという問題がある。   Conventionally, a fin (heat radiating plate) of a fin tube type heat exchanger has been provided with a spacer formed by cutting and raising a part of the fin in order to keep an appropriate distance between the fins. As shown in FIG. 8A, the spacer 102 formed by cutting and raising a part of the fin 101 has an appropriate distance between the fins 101 by contacting the surface of the adjacent fin 101 with the tip end surface thereof. However, as shown in FIG. 8B, when the spacer 102 is fitted into the cut-and-raised hole 103 of the adjacent fin 101, not only the interval between the fins 101 cannot be maintained properly, but also There is a problem that it takes a lot of time to correct the above, and the assemblability deteriorates.

そこで、図９に示すように、フィン１０１の一部を逆台形状に切り起こして形成されるスペーサ１０２が提案されている（例えば、特許文献１参照）。このようなスペーサ１０２によれば、その先端幅が根元幅よりも長くなるので、隣接するフィン１０１の切り起こし孔１０３に嵌まりにくくなると考えられる。   Therefore, as shown in FIG. 9, a spacer 102 formed by cutting and raising a part of the fin 101 into an inverted trapezoidal shape has been proposed (see, for example, Patent Document 1). According to such a spacer 102, since the tip width is longer than the root width, it is considered that it is difficult to fit into the cut-and-raised hole 103 of the adjacent fin 101.

特開２００４−３５３９５４号公報JP 2004-353594 A

しかしながら、スペーサが逆台形状であっても、隣接するフィンの逆台形状の切り起こし孔に嵌まり込み、スペーサとしての役割が発揮できないという問題が生じており、さらなる改善の余地があった。   However, even if the spacer has an inverted trapezoidal shape, there is a problem that the spacer cannot fit into the inverted trapezoidal cut and raised hole of the adjacent fin and cannot serve as a spacer, and there is room for further improvement.

そこで、本発明は、上記の問題点に鑑みなされたものであって、フィンの一部を切り起こして形成されるスペーサを備えるものでありながら、スペーサが隣接するフィンの切り起こし孔に嵌り込む可能性を大幅に低減し、組立性を向上させることができる熱交換器の提供を目的とする。   Therefore, the present invention has been made in view of the above-described problems, and includes a spacer formed by cutting and raising a part of a fin, and the spacer fits into a cut and raised hole of an adjacent fin. An object of the present invention is to provide a heat exchanger that can greatly reduce the possibility and improve the assemblability.

本発明は上記目的を達成するために提案されたものであり、請求項１に記載の発明は、熱交換器であって、冷媒が流通する扁平管と、前記扁平管を嵌合する嵌合部を有し前記扁平管と交差する方向に延在し前記扁平管の長さ方向に積層される複数のフィンと、前記フィンの一部を切り起こして形成され、その先端が隣り合う前記フィンに当接することで、隣り合う前記フィンとの間隔を保持するスペーサと、を備え、前記スペーサは、前記スペーサの根元側の第１辺と、前記スペーサの先端側の前記第１辺よりも長い第２辺と、前記第１辺端点と前記第２辺の端点とを結ぶ向かい合った側辺を有し、前記側辺は前記第１辺の端点と前記第２辺の端点を結ぶ仮想直線よりも内側にある辺であることを特徴とする。この構成によれば、スペーサを逆台形状とする場合に比べ、スペーサの先端幅を維持しつつ、切り起こし孔の中間部の幅を小さくできるので、スペーサが隣接するフィンの切り起こし孔に嵌り込む可能性を大幅に低減し、組立性を向上させることができる。また、スペーサを逆台形状とする場合に比べ、スペーサの面積を小さくできるので、フィン間を通過する風の抵抗も小さくすることができる。 The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 is a heat exchanger, wherein a flat tube through which a refrigerant flows and a fitting for fitting the flat tube A plurality of fins extending in a direction intersecting with the flat tube and stacked in the length direction of the flat tube, and the fins formed by cutting and raising a part of the fins and adjacent to each other And a spacer that maintains a distance between adjacent fins, the spacer being longer than the first side on the base side of the spacer and the first side on the tip side of the spacer A second side, and opposite side sides connecting the first side end point and the second side end point, and the side side is an imaginary straight line connecting the first side end point and the second side end point Is also an inner side. According to this configuration, the width of the middle part of the cut-and-raised hole can be reduced while maintaining the width of the leading end of the spacer as compared with the case where the spacer has an inverted trapezoidal shape. This greatly reduces the possibility of assembly and improves assembly. Moreover, since the area of a spacer can be made small compared with the case where a spacer is made into an inverted trapezoid shape, the resistance of the wind which passes between fins can also be made small.

請求項２の発明は、請求項１に記載の熱交換器において、前記側辺の中間部の前記第１辺に平行な幅は前記第１辺よりも短い部分を有することを特徴とする。
この構成によれば、中間部が根元部よりも絞られたスペーサ（切り起こし孔）が得られるので、スペーサが隣接するフィンの切り起こし孔に嵌り込む可能性をさらに低減させることができるだけでなく、フィン間を通過する風の抵抗もさらに小さくすることができる。 According to a second aspect of the present invention, in the heat exchanger according to the first aspect, the width parallel to the first side of the intermediate portion of the side is a portion shorter than the first side.
According to this configuration, a spacer (cut-and-raised hole) in which the intermediate portion is narrower than the base portion can be obtained, so that not only can the possibility that the spacer fits into the cut-and-raised hole of the adjacent fin can be further reduced. The resistance of wind passing between the fins can be further reduced.

請求項３の発明は、請求項２に記載の熱交換器において、前記中間部の幅が前記第１辺よりも短い部分は少なくとも第１辺側に位置することを特徴とする。この構成によれば、中間部の根元部よりも絞られた部分が第１辺側に位置するスペーサ（切り起こし孔）が得られるので、スペーサが隣接するフィンの切り起こし孔に嵌り込む可能性をさらに低減させることができるだけでなく、フィン間を通過する風の抵抗もさらに小さくすることができる。 According to a third aspect of the present invention, in the heat exchanger according to the second aspect , a portion where the width of the intermediate portion is shorter than the first side is located at least on the first side. According to this configuration, since the spacer (cut-and-raised hole) in which the portion narrowed down from the base portion of the intermediate portion is located on the first side is obtained, the spacer may be fitted into the cut-and-raised hole of the adjacent fin. Can be further reduced, and the resistance of wind passing between the fins can be further reduced.

本発明によれば、フィンの一部を切り起こして形成されるスペーサを備えるものでありながら、スペーサが隣接するフィンの切り起こし孔に嵌り込む可能性を大幅に低減し、組立性を向上させることができる。   According to the present invention, although the spacer is formed by cutting and raising a part of the fin, the possibility that the spacer fits into the cut and raised hole of the adjacent fin is greatly reduced and the assembling property is improved. be able to.

本発明の実施形態に係る熱交換器が適用された空気調和機の構成を示す説明図である。It is explanatory drawing which shows the structure of the air conditioner to which the heat exchanger which concerns on embodiment of this invention was applied. 本発明の実施形態に係る熱交換器が適用された室外機の斜視図である。It is a perspective view of an outdoor unit to which a heat exchanger according to an embodiment of the present invention is applied. 本発明の実施形態に係る熱交換器が適用された室外機の内部斜視図である。It is an internal perspective view of the outdoor unit to which the heat exchanger which concerns on embodiment of this invention was applied. 本発明の実施形態に係る熱交換器を示す図であり、（ａ）は熱交換器の平面図、（ｂ）は熱交換器の正面図、（ｃ）は熱交換器の側面図である。It is a figure which shows the heat exchanger which concerns on embodiment of this invention, (a) is a top view of a heat exchanger, (b) is a front view of a heat exchanger, (c) is a side view of a heat exchanger. . 本発明の実施形態に係る熱交換器の要部断面図である。It is principal part sectional drawing of the heat exchanger which concerns on embodiment of this invention. 本発明の実施形態に係る熱交換器のフィンに形成されたスペーサ及び切り起こし孔を示す図であり、（ａ）はフィンの要部側面図、（ｂ）はフィンの要部斜視図、（ｃ）はスペーサのＡ−Ａ断面図、（ｄ）はフィンの要部正面図である。It is a figure which shows the spacer and cut-and-raised hole formed in the fin of the heat exchanger which concerns on embodiment of this invention, (a) is a principal part side view of a fin, (b) is a principal part perspective view of a fin, c) is an AA cross-sectional view of the spacer, and (d) is a front view of the main part of the fin. 変形例に係るスペーサを示す図であり、（ａ）は第１変形例に係るスペーサの正面図、（ｂ）は第２変形例に係るスペーサの正面図である。It is a figure which shows the spacer which concerns on a modification, (a) is a front view of the spacer which concerns on a 1st modification, (b) is a front view of the spacer which concerns on a 2nd modification. 従来例に係る熱交換器を示す図であり、（ａ）はフィンの正常な積層状態を示す要部断面図、（ｂ）はスペーサが切り起こし孔にはまり込んだ状態を示す要部断面図である。It is a figure which shows the heat exchanger which concerns on a prior art example, (a) is principal part sectional drawing which shows the normal lamination | stacking state of a fin, (b) is principal part sectional drawing which shows the state which the spacer cut and raised and got stuck in the hole It is. 従来例に係る熱交換器のフィンに形成されたスペーサを示す説明図である。It is explanatory drawing which shows the spacer formed in the fin of the heat exchanger which concerns on a prior art example.

以下、本発明に係る好適な実施形態について、図面を参照しながら詳細に説明する。なお、実施形態の説明の全体を通じて同じ要素には同じ符号を付して説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the drawings. Note that the same reference numerals are given to the same elements throughout the description of the embodiment.

［空気調和機］
図１は、本発明の実施形態に係る熱交換器が適用された空気調和機の構成を示す説明図である。
図１に示すように、空気調和機１は、室内機２と室外機３とを備えている。室内機２には室内機用の熱交換器４が設けられ、室外機３には室外機用の熱交換器５の他に、圧縮機６、膨張弁７、四方弁８等が設けられている。 [Air conditioner]
Drawing 1 is an explanatory view showing the composition of the air harmony machine to which the heat exchanger concerning the embodiment of the present invention was applied.
As shown in FIG. 1, the air conditioner 1 includes an indoor unit 2 and an outdoor unit 3. The indoor unit 2 is provided with a heat exchanger 4 for the indoor unit, and the outdoor unit 3 is provided with a compressor 6, an expansion valve 7, a four-way valve 8 and the like in addition to the heat exchanger 5 for the outdoor unit. Yes.

暖房運転時には、室外機３の圧縮機６から吐出した高温高圧のガス冷媒が四方弁８を介して室内機２の熱交換器４に流入する。熱交換器４（凝縮器）で空気と熱交換した高圧のガス冷媒は凝縮して液化する。その後、高圧の液冷媒は、室外機３の膨張弁７を通過することによって減圧され、低温低圧の気液二相冷媒となり熱交換器５へ流入する。熱交換器５（蒸発器）で外気と熱交換した冷媒はガス化する。その後、低圧のガス冷媒は、四方弁８を介して圧縮機６に吸入される。   During the heating operation, the high-temperature and high-pressure gas refrigerant discharged from the compressor 6 of the outdoor unit 3 flows into the heat exchanger 4 of the indoor unit 2 through the four-way valve 8. The high-pressure gas refrigerant that has exchanged heat with air in the heat exchanger 4 (condenser) is condensed and liquefied. Thereafter, the high-pressure liquid refrigerant is depressurized by passing through the expansion valve 7 of the outdoor unit 3 and becomes a low-temperature low-pressure gas-liquid two-phase refrigerant and flows into the heat exchanger 5. The refrigerant that has exchanged heat with the outside air in the heat exchanger 5 (evaporator) is gasified. Thereafter, the low-pressure gas refrigerant is sucked into the compressor 6 through the four-way valve 8.

冷房運転時には、室外機３の圧縮機６から吐出した高温高圧のガス冷媒が四方弁８を介して熱交換器５に流入する。熱交換器５（凝縮器）で外気と熱交換した高圧のガス冷媒は凝縮して液化する。その後、高圧の液冷媒は、室外機３の膨張弁７を通過することによって減圧され、低温低圧の気液二相冷媒となり、室内機２の熱交換器４へ流入する。熱交換器４（蒸発器）で空気と熱交換した冷媒はガス化する。その後、低圧のガス冷媒は、四方弁８を介して圧縮機６に吸入される。   During the cooling operation, the high-temperature and high-pressure gas refrigerant discharged from the compressor 6 of the outdoor unit 3 flows into the heat exchanger 5 through the four-way valve 8. The high-pressure gas refrigerant that has exchanged heat with the outside air in the heat exchanger 5 (condenser) is condensed and liquefied. Thereafter, the high-pressure liquid refrigerant is decompressed by passing through the expansion valve 7 of the outdoor unit 3, becomes a low-temperature low-pressure gas-liquid two-phase refrigerant, and flows into the heat exchanger 4 of the indoor unit 2. The refrigerant that exchanges heat with air in the heat exchanger 4 (evaporator) is gasified. Thereafter, the low-pressure gas refrigerant is sucked into the compressor 6 through the four-way valve 8.

［室外機］
図２は、本発明の実施形態に係る熱交換器が適用された室外機の斜視図である。
図２に示すように、室外機３の外部は、背面に吸込口（図示せず）を有し、且つ正面に吹出口９ａを有するケース９と、ケース９の下面部に設けられる脚部１０と、ケース９の吹出口９ａを覆うファンガード１１と、配線接続部１２及び配管接続部１３を覆う着脱自在なカバー１４と、を備えている。 [Outdoor unit]
FIG. 2 is a perspective view of an outdoor unit to which the heat exchanger according to the embodiment of the present invention is applied.
As shown in FIG. 2, the exterior of the outdoor unit 3 includes a case 9 having a suction port (not shown) on the back surface and a blower outlet 9 a on the front surface, and a leg portion 10 provided on the lower surface portion of the case 9. And a fan guard 11 that covers the air outlet 9 a of the case 9 and a detachable cover 14 that covers the wiring connection portion 12 and the pipe connection portion 13.

図３は、本発明の実施形態に係る熱交換器が適用された室外機の内部斜視図である。
図３に示すように、室外機３の内部は、仕切板１５により機械室１６と熱交換室１７とに区画されている。機械室１６には、圧縮機６や図示しないアキュムレータ等が配置され、熱交換室１７には、熱交換器５及び送風ファン１８が配置されている。熱交換器５は、ケース９の背面及び一側面に沿う平面視Ｌ型であり、送風ファン１８により背面の吸込口から吸い込まれた空気と冷媒の間で熱交換を行う。 FIG. 3 is an internal perspective view of an outdoor unit to which the heat exchanger according to the embodiment of the present invention is applied.
As shown in FIG. 3, the interior of the outdoor unit 3 is partitioned into a machine room 16 and a heat exchange chamber 17 by a partition plate 15. In the machine room 16, the compressor 6, an accumulator (not shown) and the like are arranged, and in the heat exchange room 17, the heat exchanger 5 and the blower fan 18 are arranged. The heat exchanger 5 is L-shaped in plan view along the back surface and one side surface of the case 9, and performs heat exchange between the air sucked from the suction port on the back surface by the blower fan 18 and the refrigerant.

Ｌ型の熱交換器５は、平型に形成された熱交換器５を曲げ加工することで得られる。具体的には、表面にロウ材が塗布された部材で平型の熱交換器５を組み立てる組み立て工程と、組み立てられた平型の熱交換器５を炉に入れてロウ付けするロウ付け工程と、ロウ付けされた平型の熱交換器５をＬ型に曲げ加工する曲げ工程と、を経てＬ型の熱交換器５が製造される。以下、平型の熱交換器５について説明する。   The L-type heat exchanger 5 can be obtained by bending the heat exchanger 5 formed in a flat shape. Specifically, an assembly process for assembling the flat heat exchanger 5 with a member having a brazing material applied to the surface, and a brazing process for brazing the assembled flat heat exchanger 5 in a furnace, The L-shaped heat exchanger 5 is manufactured through a bending process of bending the brazed flat heat exchanger 5 into an L-shape. Hereinafter, the flat heat exchanger 5 will be described.

［熱交換器］
図４は、本発明の実施形態に係る熱交換器を示す図であり、（ａ）は熱交換器の平面図、（ｂ）は熱交換器の正面図、（ｃ）は熱交換器の側面図である。
図４に示すように、熱交換器５は、冷媒が流通する複数の扁平管１９と、扁平管１９の両端に取り付けられる一対のヘッダ２０と、扁平管１９と交差する方向に延在し扁平管１９の長さ方向に積層される複数のフィン２１と、を備えている。 [Heat exchanger]
FIG. 4 is a diagram illustrating a heat exchanger according to an embodiment of the present invention, in which (a) is a plan view of the heat exchanger, (b) is a front view of the heat exchanger, and (c) is a heat exchanger. It is a side view.
As shown in FIG. 4, the heat exchanger 5 includes a plurality of flat tubes 19 through which a refrigerant flows, a pair of headers 20 attached to both ends of the flat tubes 19, and a flat shape extending in a direction intersecting the flat tubes 19. And a plurality of fins 21 stacked in the length direction of the tube 19.

図５は、本発明の実施形態に係る熱交換器の要部断面図である。
図５に示すように、扁平管１９は、矢印で示す空気流通方向に延びた扁平な形状を有し、その内部には、空気流通方向に並ぶ複数の冷媒流路１９ａが形成されている。 FIG. 5 is a cross-sectional view of a main part of the heat exchanger according to the embodiment of the present invention.
As shown in FIG. 5, the flat tube 19 has a flat shape extending in the air flow direction indicated by an arrow, and a plurality of refrigerant channels 19 a arranged in the air flow direction are formed therein.

扁平管１９は、空気が通過するための隙間を介して上下に並列に配置され、その両端部が一対のヘッダ２０に接続される。例えば、図４の（ｂ）に示す熱交換器５では、左右方向に沿う複数の扁平管１９を上下方向に所定の隙間を介して並列させ、それぞれ扁平管１９の両端部をヘッダ２０に接続している。   The flat tubes 19 are arranged in parallel in the vertical direction through a gap through which air passes, and both ends thereof are connected to a pair of headers 20. For example, in the heat exchanger 5 shown in FIG. 4B, a plurality of flat tubes 19 extending in the left-right direction are juxtaposed in a vertical direction with a predetermined gap, and both ends of the flat tubes 19 are connected to the header 20 respectively. doing.

ヘッダ２０は、円筒形状を有しており、その内部において、熱交換器５に供給された冷媒を複数の扁平管１９に分岐状に流入させたり、複数の扁平管１９から流出した冷媒を合流させる。   The header 20 has a cylindrical shape, in which the refrigerant supplied to the heat exchanger 5 is branched into the plurality of flat tubes 19 or the refrigerant flowing out of the plurality of flat tubes 19 is merged. Let

フィン２１は、図５の正面視において扁平管１９と交差する方向に延在する平板形状を有しており、扁平管１９の長さ方向に空気が通過するための隙間を介して並列に積層して配置されている。例えば、図４の（ｂ）に示す熱交換器５では、上下方向に沿う複数のフィン２１が左右方向に所定の隙間を介して並列に配置されている。   The fin 21 has a flat plate shape extending in a direction intersecting with the flat tube 19 in a front view of FIG. 5, and is laminated in parallel through a gap for air to pass in the length direction of the flat tube 19. Are arranged. For example, in the heat exchanger 5 shown in FIG. 4B, a plurality of fins 21 along the vertical direction are arranged in parallel via a predetermined gap in the horizontal direction.

図５に示すように、フィン２１には、扁平管１９と嵌合される複数の嵌合部２１ａが形成されており、これらの嵌合部２１ａを扁平管１９と嵌合させた状態でロウ付けすることにより、フィン２１と扁平管１９とが一体的に接合される。なお、本実施形態の嵌合部２１ａは、風上側が開口した切り欠き溝形状であるが、打ち抜き孔形状であってもよい。   As shown in FIG. 5, the fin 21 is formed with a plurality of fitting portions 21 a to be fitted to the flat tubes 19, and the fitting portions 21 a are fitted in the flat tubes 19 in the state where the fins 21 are fitted. By attaching, the fin 21 and the flat tube 19 are integrally joined. In addition, although the fitting part 21a of this embodiment is a notch groove shape which the windward side opened, a punching hole shape may be sufficient.

［スペーサ］
つぎに、本発明の要部であるフィン２１のスペーサ２２について、図５及び図６を参照して説明する。 [Spacer]
Next, the spacer 22 of the fin 21 which is the main part of the present invention will be described with reference to FIGS.

図６は、本発明の実施形態に係る熱交換器のフィンに形成されたスペーサ及び切り起こし孔を示す図であり、（ａ）はフィンの要部側面図、（ｂ）はフィンの要部斜視図、（ｃ）はスペーサのＡ−Ａ断面図、（ｄ）はフィンの要部正面図である。
図５及び図６に示すように、フィン２１には、隣り合うフィン２１同士の間隔（例えば、１ｍｍ〜数ｍｍ）を適正に保つために、フィン２１の一部を切り起こして形成されるスペーサ２２が設けられている。例えば、本実施形態のフィン２１には、上下が嵌合部２１ａで区画される領域の前端部及び後端部にスペーサ２２を設けているが、スペーサ２２を設ける位置や個数は適宜変更することができる。 FIG. 6 is a view showing spacers and cut-and-raised holes formed in the fins of the heat exchanger according to the embodiment of the present invention, (a) is a side view of the main part of the fin, and (b) is a main part of the fin. (C) is AA sectional drawing of a spacer, (d) is a principal part front view of a fin.
As shown in FIG. 5 and FIG. 6, spacers are formed on the fins 21 by cutting and raising a part of the fins 21 in order to properly maintain the interval between adjacent fins 21 (for example, 1 mm to several mm). 22 is provided. For example, the fins 21 of the present embodiment are provided with the spacers 22 at the front end and the rear end of the region where the upper and lower portions are partitioned by the fitting portions 21a, but the position and number of the spacers 22 may be changed as appropriate. Can do.

スペーサ２２は、その先端面が隣り合うフィン２１の表面に当接することで、フィン２１同士の間隔を適正に保つことができる。一方、スペーサ２２が隣接するフィン２１の切り起こし孔２３に嵌り込んだ場合、フィン２１同士の間隔を適正に保つことができないだけでなく、その後の修正に手間がかかるため、切り起こし孔２３に対するスペーサ２２の嵌り込みを防止することが要求される。   The spacer 22 can keep the space | interval of fins 21 appropriate because the front-end | tip surface contact | abuts the surface of the fin 21 which adjoins. On the other hand, when the spacer 22 is fitted into the cut-and-raised hole 23 of the adjacent fin 21, not only cannot the gap between the fins 21 be maintained properly, but also the subsequent correction takes time, so It is required to prevent the spacer 22 from being fitted.

図６に示すように、本実施形態のスペーサ２２は、スペーサ２２の根元側の第１辺２２ａ（幅寸法Ｗ１）と、スペーサ２２の先端側の第１辺２２ａよりも長い第２辺２２ｂ（幅寸法Ｗ２）と、第１辺２２ａの端点と第２辺２２ｂの端点とを結ぶ向かい合った側辺を有し、前記側辺は前記第１辺の端点と前記第２辺の端点を結ぶ仮想直線Ｌよりも内側にある辺である。例えば、本実施形態の側辺２２ｃは、第１辺２２ａの端点から垂直に立ち上がる第１側辺２２ｄと、第１側辺２２ｄの先端から外側方に向かって傾斜して延在し、第２辺２２ｂの端点に至る第２側辺２２ｅと、を備えて構成される。   As shown in FIG. 6, the spacer 22 of the present embodiment includes a first side 22 a (width dimension W <b> 1) on the base side of the spacer 22 and a second side 22 b (longer than the first side 22 a on the tip side of the spacer 22). Width dimension W2) and opposite side edges connecting the end point of the first side 22a and the end point of the second side 22b, and the side side is an imaginary point connecting the end point of the first side and the end point of the second side The side is inside the straight line L. For example, the side 22c of the present embodiment extends from the end of the first side 22a perpendicularly from the end of the first side 22a, and extends from the tip of the first side 22d so as to incline outward. And a second side 22e that reaches the end point of the side 22b.

このようなスペーサ２２によれば、従来のような逆台形状のスペーサに比べ、スペーサ２２の先端幅Ｗ２を維持しつつ、先端幅Ｗ２に平行な切り起こし孔２３の中間部２４の幅Ｗ３を小さくすることができる。これにより、スペーサ２２が隣接するフィン２１の切り起こし孔２３に嵌り込む可能性を大幅に低減することができる。また、スペーサ２２によれば、従来のような逆台形状のスペーサに比べ、スペーサ２２の面積を小さくできるので、フィン２１間を通過する風の抵抗も小さくすることが可能になる。   According to such a spacer 22, the width W3 of the intermediate portion 24 of the cut-and-raised hole 23 parallel to the tip width W2 is maintained while maintaining the tip width W2 of the spacer 22 as compared with the conventional inverted trapezoidal spacer. Can be small. Thereby, the possibility that the spacer 22 fits into the cut-and-raised hole 23 of the adjacent fin 21 can be greatly reduced. Further, according to the spacer 22, since the area of the spacer 22 can be reduced as compared with the conventional inverted trapezoidal spacer, the resistance of wind passing between the fins 21 can also be reduced.

スペーサ２２は、側辺２２ｃが仮想直線Ｌの内側にあることが好ましい。このようなスペーサ２２によれば、逆台形状を基準形状とし、第１辺２２ａと第２辺２２ｂの間における幅Ｗ３が絞られた形状のスペーサ２２及び切り起こし孔２３が得られるので、スペーサ２２としての機能や強度を維持しつつ、隣接するフィン２１の切り起こし孔２３に対する嵌り込みを抑制できる。   It is preferable that the side 22c of the spacer 22 is inside the virtual straight line L. According to such a spacer 22, since the inverted trapezoidal shape is used as a reference shape, the spacer 22 and the cut-and-raised hole 23 having a narrowed width W3 between the first side 22a and the second side 22b are obtained. While maintaining the function and strength as 22, the fitting of the adjacent fins 21 into the cut-and-raised holes 23 can be suppressed.

以上に述べた本発明の実施形態によれば、熱交換器５であって、冷媒が流通する扁平管１９と、扁平管１９を嵌合する嵌合部２１ａを有し、扁平管１９と交差する方向に延在するフィン２１と、フィン２１の一部を切り起こして形成されるスペーサ２２と、を備え、スペーサ２２は、スペーサ２２の根元側の第１辺２２ａと、スペーサの先端側の第１辺２２ａよりも長い第２辺２２ｂと、第１辺２２ａの端点と第２辺２２ｂの端点とを結ぶ向かい合った側辺２２ｃを有し、側辺２２ｃは第１辺２２ａの端点と第２辺２２ｂの端点を結ぶ仮想直線Ｌよりも内側にある辺であるので、逆台形状のスペーサに比べ、スペーサ２２の先端幅Ｗ２を維持しつつ、切り起こし孔２３の中間部２４の幅Ｗ３を小さくでき、その結果、スペーサ２２が隣接するフィン２１の切り起こし孔２３に嵌り込む可能性を大幅に低減し、組立性を向上させることができる。また、このようなスペーサ２２は、逆台形状のスペーサに比べ、スペーサ２２の面積を小さくできるので、フィン２１間を通過する風の抵抗も小さくすることができる。   According to the embodiment of the present invention described above, the heat exchanger 5 includes the flat tube 19 through which the refrigerant flows, and the fitting portion 21a into which the flat tube 19 is fitted, and intersects the flat tube 19. And a spacer 22 formed by cutting and raising a part of the fin 21, and the spacer 22 includes a first side 22a on the base side of the spacer 22 and a tip side of the spacer. The second side 22b that is longer than the first side 22a, and the opposite side 22c that connects the end point of the first side 22a and the end point of the second side 22b, and the side 22c is connected to the end of the first side 22a. Since the side is inside the virtual straight line L connecting the end points of the two sides 22b, the width W3 of the intermediate portion 24 of the cut-and-raised hole 23 is maintained while maintaining the tip width W2 of the spacer 22 as compared with the inverted trapezoidal spacer. As a result, the spacers 22 are adjacent to each other. Significantly reduces the likelihood that fits into the cut-and-raised hole 23 of the fin 21, thereby improving the assemblability. In addition, such a spacer 22 can reduce the area of the spacer 22 as compared with the inverted trapezoidal spacer, so that the resistance of wind passing between the fins 21 can also be reduced.

また、スペーサ２２は、側辺２２ｃが仮想直線Ｌの内側にあるので、台形状を基準形状とし、第１辺２２ａと第２辺２２ｂの間における幅Ｗ３が絞られた形状のスペーサ２２及び切り起こし孔２３が得られ、その結果、スペーサ２２としての機能や強度を維持しつつ、隣接するフィン２１の切り起こし孔２３に対する嵌り込みを抑制することができる。   Further, since the side 22c is inside the virtual straight line L, the spacer 22 has a trapezoidal shape as a reference shape, and the spacer 22 having a shape in which the width W3 between the first side 22a and the second side 22b is narrowed. The raised holes 23 are obtained, and as a result, the fitting of the adjacent fins 21 into the cut and raised holes 23 can be suppressed while maintaining the function and strength as the spacers 22.

［変形例］
つぎに、スペーサ２２の変形例について、図７を参照して説明する。ただし、前記実施形態と共通する部分は、前記実施形態と同じ符号を用いることにより、前記実施形態の説明を援用する。 [Modification]
Next, a modified example of the spacer 22 will be described with reference to FIG. However, the description of the embodiment is incorporated by using the same reference numerals as those in the embodiment for portions common to the embodiment.

図７は、変形例に係るスペーサを示す図であり、（ａ）は第１変形例に係るスペーサの正面図、（ｂ）は第２変形例に係るスペーサの正面図である。
図７に示すように、変形例に係るスペーサ２２Ｂ、２２Ｃは、側辺２２ｆ、２２ｇが凹状の折曲線又は湾曲線から形成される点が前記実施形態のスペーサ２２と相違している。例えば、変形例１に係るスペーサ２２Ｂの側辺２２ｆは、第１辺２２ａの端点から内側方に向けて傾斜して立ち上がる第１側辺２２ｈと、第１側辺２２ｈの先端から第２辺２２ｂに向かって垂直方向に延在する第２側辺２２ｉと、第２側辺２２ｉの先端から外側方に向けて傾斜して延在し、第２辺２２ｂの端点に至る第３側辺２２ｊと、を備えている。また、変形例２に係るスペーサ２２Ｃでは、変形例１に係るスペーサ２２Ｂの側辺２２ｆと実質的に同等の側辺２２ｇを湾曲辺により実現している。 7A and 7B are diagrams showing a spacer according to a modified example, in which FIG. 7A is a front view of the spacer according to the first modified example, and FIG. 7B is a front view of the spacer according to the second modified example.
As shown in FIG. 7, the spacers 22B and 22C according to the modification are different from the spacer 22 of the above-described embodiment in that the side sides 22f and 22g are formed from concave folding lines or curved lines. For example, the side 22f of the spacer 22B according to Modification 1 includes a first side 22h that rises inward from the end of the first side 22a, and a second side 22b from the tip of the first side 22h. A second side 22i extending in the vertical direction toward the second side, a third side 22j extending obliquely outward from the tip of the second side 22i, and reaching the end point of the second side 22b, It is equipped with. Further, in the spacer 22C according to the second modification, the side 22g substantially equivalent to the side 22f of the spacer 22B according to the first modification is realized by the curved side.

このような変形例によれば、第１辺２２ａと第２辺２２ｂの間における幅（幅寸法Ｗ３）が第１辺２２ａ（幅寸法Ｗ１）よりも短い部分を有するスペーサ２２Ｂ、２２Ｃや切り起こし孔（図示せず）が得られるので、スペーサ２２Ｂ、２２Ｃが隣り合うフィン２１の切り起こし孔２３に嵌り込む可能性をさらに低減させることができるだけでなく、風の流れを垂直に受けるスペーサの面積を小さくできるので、フィン２１間を通過する風の抵抗もさらに小さくすることができる。なお、第１辺２２ａと第２辺２２ｂの間における根元部（幅寸法Ｗ１）よりも短い幅Ｗ３の部分を第２辺２２ｂ側に位置させることで、根元部よりも絞られた幅Ｗ３の部分が第１辺側まで位置するスペーサ（切り起こし孔）が得られるので、スペーサが隣り合うフィンの切り起こし孔に嵌り込む可能性をさらに低減させることができるだけでなく、フィン間を通過する風の抵抗もさらに小さくすることができる。   According to such a modified example, the spacers 22B and 22C having a width (width dimension W3) between the first side 22a and the second side 22b shorter than the first side 22a (width dimension W1) or the cut and raised portions. Since a hole (not shown) is obtained, not only can the possibility of the spacers 22B and 22C fitting into the cut-and-raised hole 23 of the adjacent fin 21 can be further reduced, but also the area of the spacer that receives the wind flow vertically. Therefore, the resistance of wind passing between the fins 21 can be further reduced. In addition, the part of the width W3 shorter than the base part (width dimension W1) between the first side 22a and the second side 22b is positioned on the second side 22b side, so that the width W3 is narrower than the base part. Since a spacer (cut-and-raised hole) in which the portion is located up to the first side is obtained, not only can the possibility that the spacer fits into the cut-and-raised hole of the adjacent fin can be further reduced, but also the wind passing between the fins The resistance can be further reduced.

以上、本発明の好ましい実施形態について詳述したが、本発明は上述した実施形態に限定されるものではなく、特許請求の範囲に記載された本発明の要旨の範囲内において、種々の変形、変更が可能である。   The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments, and various modifications may be made within the scope of the gist of the present invention described in the claims. It can be changed.

１…空気調和機、２…室内機、３…室外機、４…熱交換器、５…熱交換器、６…圧縮機、７…膨張弁、８…四方弁、９…ケース、９ａ…吹出口、１０…脚部、１１…ファンガード、１２…配線接続部、１３…配管接続部、１４…カバー、１５…仕切板、１６…機械室、１７…熱交換室、１８…送風ファン、１９…扁平管、１９ａ…冷媒流路、２０…ヘッダ、２１…フィン、２１ａ…嵌合部、２２、２２Ｂ、２２Ｃ…スペーサ、２２ａ…第１辺、２２ｂ…第２辺、２２ｃ…側辺、２２ｄ…第１側辺、２２ｅ…第２側辺、２２ｆ…側辺、２２ｇ…側辺、２２ｈ…第１側辺、２２ｉ…第２側辺、２２ｊ…第３側辺、２３…切り起こし孔   DESCRIPTION OF SYMBOLS 1 ... Air conditioner, 2 ... Indoor unit, 3 ... Outdoor unit, 4 ... Heat exchanger, 5 ... Heat exchanger, 6 ... Compressor, 7 ... Expansion valve, 8 ... Four-way valve, 9 ... Case, 9a ... Blow Outlet, 10 ... Leg part, 11 ... Fan guard, 12 ... Wiring connection part, 13 ... Pipe connection part, 14 ... Cover, 15 ... Partition plate, 16 ... Machine room, 17 ... Heat exchange room, 18 ... Blower fan, 19 ... Flat tube, 19a ... Refrigerant flow path, 20 ... Header, 21 ... Fin, 21a ... Fitting part, 22, 22B, 22C ... Spacer, 22a ... First side, 22b ... Second side, 22c ... Side, 22d ... first side, 22e ... second side, 22f ... side, 22g ... side, 22h ... first side, 22i ... second side, 22j ... third side, 23 ... cut-up hole

Claims (3)

熱交換器であって、
冷媒が流通する扁平管と、
前記扁平管を嵌合する嵌合部を有し前記扁平管と交差する方向に延在し前記扁平管の長さ方向に積層される複数のフィンと、
前記フィンの一部を切り起こして形成され、その先端が隣り合う前記フィンに当接することで、隣り合う前記フィンとの間隔を保持するスペーサと、を備え、
前記スペーサは、
前記スペーサの根元側の第１辺と、
前記スペーサの先端側の前記第１辺よりも長い第２辺と、
前記第１辺の端点と前記第２辺の端点とを結ぶ向かい合った側辺を有し、前記側辺は前記第１辺の端点と前記第２辺の端点を結ぶ仮想直線よりも内側にある辺であることを特徴とする熱交換器。 A heat exchanger,
A flat tube through which refrigerant flows,
A plurality of fins having a fitting portion for fitting the flat tube, extending in a direction intersecting the flat tube, and stacked in a length direction of the flat tube;
A spacer is formed by cutting and raising a part of the fin, and the tip of the fin abuts on the adjacent fin, thereby maintaining a gap between the adjacent fins.
The spacer is
A first side on the base side of the spacer;
A second side longer than the first side on the tip side of the spacer;
It has opposite sides connecting the end point of the first side and the end point of the second side, and the side side is inside an imaginary straight line connecting the end point of the first side and the end point of the second side. A heat exchanger characterized by being a side. 側辺の中間部の前記第１辺に平行な幅は前記第１辺よりも短い部分を有することを特徴とする請求項１に記載の熱交換器。   2. The heat exchanger according to claim 1, wherein a width parallel to the first side of the intermediate portion of the side side has a portion shorter than the first side. 前記中間部の幅が前記第１辺よりも短い部分は少なくとも第１辺側に位置することを特徴とする請求項２に記載の熱交換器。 The heat exchanger according to claim 2 , wherein a portion where the width of the intermediate portion is shorter than the first side is located at least on the first side.
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JPS5929797B2 (en) * 1976-10-29 1984-07-23 日本ラヂヱーター株式会社 Heat exchanger core using stacked fins
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