JP2012213323A - Housing structure of inverter device - Google Patents

Housing structure of inverter device Download PDF

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JP2012213323A
JP2012213323A JP2012164273A JP2012164273A JP2012213323A JP 2012213323 A JP2012213323 A JP 2012213323A JP 2012164273 A JP2012164273 A JP 2012164273A JP 2012164273 A JP2012164273 A JP 2012164273A JP 2012213323 A JP2012213323 A JP 2012213323A
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support frame
cooling
inverter device
cooling fan
sheet metal
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JP5141844B2 (en
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Makoto Takano
信 高野
Yoshihisa Hatosaki
芳久 鳩崎
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Fuji Electric Co Ltd
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Fuji Electric Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a housing structure of an inverter device which prevents cooling air from flowing to the clearance side instead of flowing to a cooling fin.SOLUTION: A housing structure of an inverter device includes: a cooling fan support frame 17 supporting a cooling fan unit and formed by a sheet metal member; and a capacitor support frame 22 supporting an electrolytic capacitor and formed by a sheet metal member. A pillar part 22c of the capacitor support frame 22 closes a clearance formed between an outer peripheral of the cooling fin 21, a rear plate 10, and a first side surface sheet metal 11.

Description

本発明は、インバータ装置の筐体構造に関する。   The present invention relates to a casing structure of an inverter device.

従来のインバータ装置は、電解コンデンサや冷却フィンなどの重量物を支えるため、アルミダイカスト部材や板金などが組み合わされた金属製の筐体が用いられている。
例えば、特許文献１に記載されているインバータ装置の筐体を組み立てるには、図１０（ａ）に示すように、アルミダイカスト支柱１ａ〜１ｄをインバータ装置の四隅にそれぞれ配置する。次いで、アルミダイカスト支柱１ａ〜１ｄに板金梁２ａ、２ｂをネジ止めにて取り付けることにより、アルミダイカスト支柱１ａ〜１ｄをインバータ装置の長手方向に連結する。そして、アルミダイカスト支柱１ａ，１ｂに天面カバー３、４ａをネジ止めにて取り付け、アルミダイカスト支柱１ｃ，１ｄに底面カバー４ｂをネジ止めにて取り付ける。そして、アルミダイカスト支柱１ａ〜１ｄに、フレーム板金５ａ、５ｂをネジ止めにて取り付け、フレーム板金５ｂに冷却フィン６を取付け、フレーム板金５ａに電解コンデンサ（不図示）を取り付けた後、板金７およびウライタ８をネジ止めにて取り付けることで、図１０（ｂ）に示す筐体が組立てられる。
In a conventional inverter device, a metal casing in which an aluminum die-cast member, a sheet metal, or the like is combined is used to support heavy objects such as an electrolytic capacitor and a cooling fin.
For example, in order to assemble the casing of the inverter device described in Patent Document 1, as shown in FIG. 10 (a), aluminum die cast columns 1a to 1d are respectively arranged at the four corners of the inverter device. Next, the aluminum die cast struts 1a to 1d are connected to the longitudinal direction of the inverter device by attaching the sheet metal beams 2a and 2b to the aluminum die cast struts 1a to 1d with screws. Then, the top cover 3, 4a is attached to the aluminum die-casting columns 1a, 1b with screws, and the bottom cover 4b is attached to the aluminum die-casting columns 1c, 1d with screws. Then, the frame metal plates 5a and 5b are attached to the aluminum die cast struts 1a to 1d by screws, the cooling fins 6 are attached to the frame metal plate 5b, and an electrolytic capacitor (not shown) is attached to the frame metal plate 5a. The housing shown in FIG. 10B is assembled by attaching the writer 8 with screws.

特開２００７−３１２５４５号公報JP 2007-31545 A

ところで、特許文献１の筐体構造では、天面カバー３、４ａと冷却フィン６との間に配置される冷却ファン（不図示）から冷却フィン６に導入される風が、冷却フィン６の冷却効率の高い部分に流れるようにガイドする板金部品を設ける必要があり、部品点数の増加によってコストアップを招くという問題もある。   By the way, in the case structure of Patent Document 1, wind introduced into the cooling fin 6 from a cooling fan (not shown) disposed between the top cover 3, 4 a and the cooling fin 6 cools the cooling fin 6. It is necessary to provide a sheet metal part that guides it so that it flows to a highly efficient part, and there is also a problem that the cost increases due to an increase in the number of parts.

そこで、本発明は、上記従来例の未解決の課題に着目してなされたものであり、空気の流れを変更する部品を使用せずに冷却フィンの冷却効率を高めることでコストアップを解消することができるインバータ装置の筐体構造を提供することを目的としている。   Accordingly, the present invention has been made paying attention to the unsolved problems of the above-described conventional example, and eliminates the cost increase by increasing the cooling efficiency of the cooling fins without using components that change the air flow. An object of the present invention is to provide a casing structure for an inverter device.

上記目的を達成するために、請求項１に係るインバータ装置の筐体構造は、筐体の長手方向の一方に配置した冷却ファンユニットと、長手方向の他方に配置した電解コンデンサと、前記冷却ファンユニット及び前記電解コンデンサの間に配置した冷却フィンとを支持して収納するインバータ装置の筐体構造において、断面Ｌ字状に形成された板金部材からなり前記冷却ファンユニットを支持する冷却ファン支持フレームと、断面Ｌ字状に形成された板金部材からなり前記電解コンデンサを支持するコンデンサ支持フレームとを備え、前記筐体は、ウライタ部と、該ウライタ部の両縁部から立ち上がる一対の側面部とを有し、前記冷却フィンをフィン先端側が前記ウライタ部に対向するように前記一対の側面部間に配置し、前記ウライタ部及び前記一対の側面部と前記冷却フィンの外周との間の隙間を閉塞する閉塞部を前記電解コンデンサ支持フレームに設けることを特徴とする。   In order to achieve the above object, a casing structure of an inverter device according to claim 1 includes a cooling fan unit disposed on one side in a longitudinal direction of the casing, an electrolytic capacitor disposed on the other side in the longitudinal direction, and the cooling fan. A cooling fan support frame comprising a sheet metal member having an L-shaped cross section and supporting the cooling fan unit in a casing structure of an inverter device for supporting and storing a cooling fin disposed between the unit and the electrolytic capacitor And a capacitor support frame made of a sheet metal member formed in an L-shaped cross section to support the electrolytic capacitor, and the housing includes a writer part and a pair of side parts rising from both edges of the writer part. The cooling fin is disposed between the pair of side surface portions so that the tip end side of the fin faces the writer portion, and the writer portion and An occlusion for closing the gap between the serial pair of side portions and the outer periphery of the cooling fins, characterized in that provided in the electrolytic capacitor support frame.

この発明によると、冷却風が冷却フィンに流れず、隙間側に流れるのを防止することができるので、冷却フィンの冷却効率の低下を防止することができる。   According to this invention, it is possible to prevent the cooling air from flowing to the cooling fins but to the gap side, so that it is possible to prevent the cooling efficiency of the cooling fins from being lowered.

本発明に係るインバータ装置の筐体構造によれば、閉塞部が冷却フィンの外周とウライタ部及び側面部との間の隙間を閉塞しており、冷却風が冷却フィンに流れずに隙間側に流れるのを防止するので、冷却フィンの冷却効率の低下を防止することができる。   According to the casing structure of the inverter device according to the present invention, the closing portion closes the gap between the outer periphery of the cooling fin and the writer portion and the side portion, so that the cooling air does not flow to the cooling fin but on the gap side. Since the flow is prevented, it is possible to prevent the cooling efficiency of the cooling fins from being lowered.

本発明に係るインバータ装置の外観を示す斜視図である。It is a perspective view which shows the external appearance of the inverter apparatus which concerns on this invention. インバータ装置の内部構造を示す斜視図である。It is a perspective view which shows the internal structure of an inverter apparatus. 前面カバーを取り外したインバータ装置の内部構造を示す平面図である。It is a top view which shows the internal structure of the inverter apparatus which removed the front cover. 主回路端子台、プリント基板、電解コンデンサ等を外したインバータ装置の筐体構造を示す斜視図である。It is a perspective view which shows the housing structure of the inverter apparatus which removed the main circuit terminal block, the printed circuit board, the electrolytic capacitor, etc. インバータ装置の筐体構造を示す分解斜視図である。It is a disassembled perspective view which shows the housing structure of an inverter apparatus. 電解コンデンサ用の門型形状の支持フレームを示す図である。It is a figure which shows the gate-shaped support frame for electrolytic capacitors. 冷却ファン用の門型形状の支持フレームを示す図である。It is a figure which shows the gate-shaped support frame for cooling fans. 冷却ファンから吹き出た冷却風が冷却フィンと筐体の間の空間に流れやすい領域を示す図である。It is a figure which shows the area | region where the cooling air which blown off from the cooling fan tends to flow into the space between a cooling fin and a housing | casing. 冷却フィンの冷却効果を説明する図である。It is a figure explaining the cooling effect of a cooling fin. 従来のインバータ装置の筐体構造を示す図である。It is a figure which shows the housing structure of the conventional inverter apparatus.

以下、本発明のインバータ装置の筐体構造を実施するための最良の形態（以下、実施形態という。）を、図面を参照しながら詳細に説明する。
図１は本発明に係るインバータ装置の外観を示す斜視図、図２はインバータ装置の内部構造を示す斜視図、図３は前面カバーを取り外したインバータ装置の内部構造を示す平面図、図４は主回路端子台、プリント基板、電解コンデンサ等を外したインバータ装置の筐体構造を示す斜視図、図５はインバータ装置の筐体構造の分解斜視図、図６は電解コンデンサ用の門型形状の支持フレームを示す図、図７は冷却ファン用の門型形状の支持フレームを示す図、図８は冷却ファンから吹き出た冷却風が冷却フィンと筐体の間の空間に流れやすい領域を示す図、図９は冷却フィンの冷却効果を説明する図である。 Hereinafter, the best mode for carrying out a casing structure of an inverter device of the present invention (hereinafter referred to as an embodiment) will be described in detail with reference to the drawings.
1 is a perspective view showing the external appearance of an inverter device according to the present invention, FIG. 2 is a perspective view showing the internal structure of the inverter device, FIG. 3 is a plan view showing the internal structure of the inverter device with the front cover removed, and FIG. FIG. 5 is an exploded perspective view of the casing structure of the inverter device from which the main circuit terminal block, the printed circuit board, the electrolytic capacitor, etc. are removed, FIG. 5 is an exploded perspective view of the casing structure of the inverter device, and FIG. FIG. 7 is a view showing a gate-shaped support frame for a cooling fan, FIG. 8 is a view showing an area where the cooling air blown from the cooling fan easily flows into the space between the cooling fin and the housing. FIG. 9 is a diagram for explaining the cooling effect of the cooling fins.

本実施形態のインバータ装置は、図１及び図２に示すように、長方形状のウライタ１０の長辺側の両縁部から立ち上がる一対の第１側面板金１１と、これら一対の第１側面板金１１の上部に連結した一対の板金梁１２を介して第１側面板金１１の上方に立ち上がる一対の第２側面板金１３と、ウライタ１０の一方の短辺縁部から立ち上がる冷却ファン支持フレーム１７の第２支持部１７ｂ、天面カバー１４と、ウライタ１０の他方の短辺縁部から立ち上がるコンデンサ支持フレーム２２の柱部２２ｂ、底面カバー１５と、第２側面板金１３及び天面カバー１４で囲まれた開口部を閉塞する上部前面カバー１６ａ及び下部前面カバー１６ｂとを備えている。   As shown in FIGS. 1 and 2, the inverter device according to the present embodiment includes a pair of first side metal plates 11 rising from both edge portions on the long side of the rectangular writer 10, and the pair of first side metal plates 11. A pair of second side metal plates 13 rising above the first side metal plate 11 via a pair of metal plate beams 12 connected to the upper part of the first metal plate 12 and a second cooling fan support frame 17 rising from one short side edge of the writer 10. An opening surrounded by the support portion 17 b, the top cover 14, the column portion 22 b of the capacitor support frame 22 rising from the other short side edge of the writer 10, the bottom cover 15, the second side sheet metal 13, and the top cover 14. An upper front cover 16a and a lower front cover 16b are provided to close the part.

インバータ装置の内部には、図３に示すように、長手方向の一方の天面カバー１４側に冷却ファンユニット１８が配置され、長手方向の他方の底面カバー１５側に電解コンデンサ２３が配置され、冷却ファンユニット１８及び電解コンデンサ２３の間の長手方向の中央部に冷却フィン２１が配置されている。   Inside the inverter device, as shown in FIG. 3, a cooling fan unit 18 is disposed on one top cover 14 side in the longitudinal direction, and an electrolytic capacitor 23 is disposed on the other bottom cover 15 side in the longitudinal direction. Cooling fins 21 are arranged in the center in the longitudinal direction between the cooling fan unit 18 and the electrolytic capacitor 23.

すなわち、図２に示すように、天面カバー１４側に、冷却ファン支持フレーム１７に取付けられた冷却ファンユニット１８が配置されているとともに、仕切り板１９、ファンガイド板２０を間に配置した状態で直方体形状の冷却フィン２１が長手方向に隣接して配置されている。ここで、図２に示すように、冷却フィン２１の底面カバー１５を向く面には、多数のフィンが並んだ吸気口２１ａが設けられている。そして、冷却フィン２１の上面には、インバータ装置の主回路を構成するＩＧＢＴやダイオード等の発熱部品３０，３１が装着されている。   That is, as shown in FIG. 2, the cooling fan unit 18 attached to the cooling fan support frame 17 is disposed on the top cover 14 side, and the partition plate 19 and the fan guide plate 20 are disposed therebetween. The rectangular parallelepiped cooling fins 21 are disposed adjacent to each other in the longitudinal direction. Here, as shown in FIG. 2, an intake port 21 a in which a large number of fins are arranged is provided on the surface of the cooling fin 21 facing the bottom cover 15. And, on the upper surface of the cooling fin 21, heating parts 30, 31 such as IGBTs and diodes constituting the main circuit of the inverter device are mounted.

また、この冷却フィン２１に隣接してコンデンサ支持フレーム２２が配置されており、このコンデンサ支持フレーム２２に電解コンデンサ２３が装着されている。
そして、冷却フィン２１及び電解コンデンサ２３を装着したコンデンサ支持フレーム２２の上部には、長辺側で互いに離間している一対の板金梁１２の間を連結している連結部材２４ａ〜２４ｄ上に、プリント基板２５、主回路端子台２６等が配置されている。 A capacitor support frame 22 is disposed adjacent to the cooling fin 21, and an electrolytic capacitor 23 is attached to the capacitor support frame 22.
And, on the upper part of the capacitor support frame 22 equipped with the cooling fins 21 and the electrolytic capacitors 23, on the connecting members 24a to 24d connecting the pair of sheet metal beams 12 spaced apart from each other on the long side, A printed circuit board 25, a main circuit terminal block 26, and the like are arranged.

板金梁１２は、図５に示すように、インバータ装置の側面の一部となる長尺板状のウェブ１２ａと、このウェブ１２ａの短尺方向の縁部から直交して折曲された一対のフランジ部１２ｂ，１２ｃとを備えたＣチャンネル形状とされている。   As shown in FIG. 5, the sheet metal beam 12 includes a long plate-like web 12 a that is a part of the side surface of the inverter device, and a pair of flanges that are bent perpendicularly from an edge in the short direction of the web 12 a. The shape is a C channel provided with portions 12b and 12c.

コンデンサ支持フレーム２２は、図６（ａ）〜（ｄ）に示すように、門型形状に折り曲げて形成された板金部材であり、電解コンデンサ２３を装着する装着穴２２ａ１が形成されている支持部２２ａと、支持部２２ａから互いに平行に延在している柱部２２ｂ，２２ｃとを備え、一方の柱部２２ｂには多数の排気スリット２２ｂ１が形成され、他方の柱部２２ｃには矩形状の通気穴２２ｃ１が形成されている。このコンデンサ支持フレーム２２は、全ての縁部が、折曲部を設けることで断面Ｌ字形状に形成されている。   As shown in FIGS. 6A to 6D, the capacitor support frame 22 is a sheet metal member formed by bending into a gate shape, and a support portion in which a mounting hole 22a1 for mounting the electrolytic capacitor 23 is formed. 22a and column portions 22b and 22c extending in parallel with each other from the support portion 22a, a plurality of exhaust slits 22b1 are formed in one column portion 22b, and a rectangular shape is formed in the other column portion 22c. A ventilation hole 22c1 is formed. The capacitor support frame 22 is formed in an L-shaped cross section by providing bent portions at all edges.

そして、冷却フィン２１に隣接して配置したコンデンサ支持フレーム２２は、図１（ｂ）に示すように、柱部２２ｃが冷却フィン２１に設けた多数のフィンが並んだ吸気口２１ａの周囲に当接し、通気穴２２ｃ１が吸気口２１ａに対応するように配置されている。   As shown in FIG. 1B, the capacitor support frame 22 arranged adjacent to the cooling fins 21 has a pillar portion 22c that is placed around the intake port 21a where a large number of fins provided on the cooling fins 21 are arranged. The ventilation hole 22c1 is disposed so as to correspond to the intake port 21a.

ここで、図１に示すように、前述した第１側面板金１１には、コンデンサ支持フレーム２２の門型形状の空間に対応した位置に矩形状の開口部１１ａが形成されており、この開口部１１ａを閉塞するように、多数のスリット２７ａを設けたメンテナンスプレート２７が、コンデンサ支持フレーム２２の柱部２２ｂ，２２ｃにねじ２８により止められている。なお、メンテナンスプレート２７は、コンデンサ支持フレーム２２の柱部２２ｂ，２２ｃにネジ止めすることにより、第１側面板金１１の表面よりも出っ張ることなく、開口部１１ａを閉塞することができる。   Here, as shown in FIG. 1, a rectangular opening 11a is formed in the first side plate 11 described above at a position corresponding to the gate-shaped space of the capacitor support frame 22, and this opening is formed. A maintenance plate 27 provided with a large number of slits 27a is fixed to the column portions 22b and 22c of the capacitor support frame 22 by screws 28 so as to close the cover 11a. Note that the maintenance plate 27 can close the opening 11 a without protruding from the surface of the first side surface metal plate 11 by being screwed to the column portions 22 b and 22 c of the capacitor support frame 22.

冷却ファン支持フレーム１７は、図７（ａ）〜（ｄ）に示すように、門型形状に折り曲げて形成された板金部材であり、矩形状の穴１７ａ１が形成されている第１支持部１７ａと、第１支持部１７ａから直交して延在し、矩形状の通気穴１７ｂ１を形成している第２支持部１７ｂと、この第２支持部１７ｂと平行に第１支持部１７ａから延在し、第２支持部１７ｂより短尺な長さの第３支持部１７ｃとで構成されている。この冷却ファン支持フレーム１７は、全ての縁部が、折曲部を設けることで断面Ｌ字形状に形成されている。そして、冷却ファン支持フレーム１７は、図２に示すように、第２支持部１７ｂがウライタ１０から立上がり、第３支持部１７ｃがファンガイド板２０から立ち上がった状態で冷却ファンユニット１８を支持している。   As shown in FIGS. 7A to 7D, the cooling fan support frame 17 is a sheet metal member formed by bending into a gate shape, and the first support portion 17a in which a rectangular hole 17a1 is formed. A second support portion 17b extending orthogonally from the first support portion 17a and forming a rectangular vent hole 17b1, and extending from the first support portion 17a in parallel with the second support portion 17b. The third support portion 17c is shorter than the second support portion 17b. The cooling fan support frame 17 is formed in an L-shaped cross section by providing bent portions at all edges. As shown in FIG. 2, the cooling fan support frame 17 supports the cooling fan unit 18 with the second support portion 17 b rising from the writer 10 and the third support portion 17 c rising from the fan guide plate 20. Yes.

次に、インバータ装置の筐体の組立てについて、図４及び図５を参照しながら説明する。
冷却ファンユニット１８を支持する冷却ファン支持フレーム１７を長手方向の一方に配置し、電解コンデンサ２３を装着するコンデンサ支持フレーム２２を長手方向の他方に配置し、冷却ファン支持フレーム１７及びコンデンサ支持フレーム２２の間の長手方向の中央に冷却フィン２１を配置する。 Next, assembly of the casing of the inverter device will be described with reference to FIGS.
The cooling fan support frame 17 that supports the cooling fan unit 18 is arranged in one of the longitudinal directions, the capacitor support frame 22 to which the electrolytic capacitor 23 is attached is arranged in the other of the longitudinal directions, and the cooling fan support frame 17 and the capacitor support frame 22 are arranged. The cooling fins 21 are arranged in the center in the longitudinal direction between the two.

そして、冷却ファン支持フレーム１７と冷却フィン２１との間にファンガイド板２０を配置し、冷却ファン支持フレーム１７及びファンガイド板２０をネジ止めして一体に固定し、ファンガイド板２０及び冷却フィン２１をネジ止めして一体に固定する。また、冷却フィン２１及びコンデンサ支持フレーム２２を、平板状のトリツケイタ２９を介してネジ止めにより一体に固定する。これにより、冷却ファン支持フレーム１７、ファンガイド板２０、冷却フィン２１及びコンデンサ支持フレーム２２が長手方向に一体に固定される。   Then, the fan guide plate 20 is disposed between the cooling fan support frame 17 and the cooling fins 21, and the cooling fan support frame 17 and the fan guide plate 20 are screwed together and fixed together. 21 is fixed with screws. In addition, the cooling fin 21 and the capacitor support frame 22 are integrally fixed by screwing through a flat plate-shaped tri-silicater 29. Thereby, the cooling fan support frame 17, the fan guide plate 20, the cooling fins 21, and the capacitor support frame 22 are integrally fixed in the longitudinal direction.

次いで、冷却ファン支持フレーム１７及びコンデンサ支持フレーム２２の門型形状と直交するように互いに幅方向に離間した、一対の板金梁１２のフランジ１２ｃを、冷却フィン２１の上面及びコンデンサ支持フレーム２２の支持部２２ａにネジ止めにより一体に固定する。   Next, the flanges 12c of the pair of sheet metal beams 12 spaced apart from each other in the width direction so as to be orthogonal to the gate shape of the cooling fan support frame 17 and the capacitor support frame 22 are supported by the upper surface of the cooling fin 21 and the capacitor support frame 22. It fixes to the part 22a integrally by screwing.

次いで、冷却フィン２１のフィン先端側にウライタ１０をネジ止めし、コンデンサ支持フレーム２２の支持部２２ａ及び一対の一対の板金梁１２のウェブ１２ａに底面カバー１５をネジ止めして一体に固定する。また、冷却ファン支持フレーム１７の第１支持部１７ａに天面カバー１４をネジ止めし、ファンガイド板２０の上部に仕切り板１９をネジ止めし、一対の板金梁１２のウェブ１２ａと天面カバー１４とをネジ止めすることで、図４に示す状態に組立てられる。   Next, the writer 10 is screwed to the fin tip side of the cooling fin 21, and the bottom cover 15 is screwed to the support portion 22 a of the capacitor support frame 22 and the web 12 a of the pair of sheet metal beams 12 to be integrally fixed. Further, the top cover 14 is screwed to the first support portion 17a of the cooling fan support frame 17, the partition plate 19 is screwed to the top of the fan guide plate 20, and the web 12a of the pair of sheet metal beams 12 and the top cover As shown in FIG.

次いで、板金梁１２およびコンデンサ支持フレーム２２，冷却ファン支持フレーム１７に第１側面板金１１および第２側面板金１２をネジ止めし、その後、上部前面カバー１６ａ及び下部前面カバー１６ｂを装着することで、図１に示すインバータ装置の筐体が組立てられる。   Next, the first side plate 11 and the second side plate 12 are screwed to the sheet metal beam 12, the capacitor support frame 22, and the cooling fan support frame 17, and then the upper front cover 16a and the lower front cover 16b are mounted. The casing of the inverter device shown in FIG. 1 is assembled.

次に、本実施形態のインバータ装置の筐体構造の作用効果について説明する。
本実施形態のインバータ装置の筐体は、長手方向に冷却ファンユニット１８を支持する門型形状の冷却ファン支持フレーム１７と、冷却フィン２１と、門型形状の電解コンデンサ２３を装着するコンデンサ支持フレーム２２とが固定され、冷却ファン支持フレーム１７及びコンデンサ支持フレーム２２の門型に直交するように幅方向に離間したＣチャンネル形状の一対の板金梁１２が、冷却フィン２１及びコンデンサ支持フレーム２２に固定されているので、従来のインバータ装置のような四隅にアルミダイカスト支柱を使用することなく、比較的安価な部材により筐体強度を確保することができるので、コストアップを抑制することができる。 Next, the effect of the housing structure of the inverter device of this embodiment will be described.
The casing of the inverter device according to the present embodiment includes a gate-shaped cooling fan support frame 17 that supports the cooling fan unit 18 in the longitudinal direction, a cooling fin 21, and a capacitor support frame that mounts the gate-shaped electrolytic capacitor 23. 22 and a pair of sheet metal beams 12 having a C channel shape spaced in the width direction so as to be orthogonal to the gate shape of the cooling fan support frame 17 and the capacitor support frame 22 are fixed to the cooling fins 21 and the capacitor support frame 22. As a result, the strength of the housing can be ensured by a relatively inexpensive member without using aluminum die-casting columns at the four corners as in the conventional inverter device, so that an increase in cost can be suppressed.

また、門型形状の冷却ファン支持フレーム１７及びコンデンサ支持フレーム２２と、Ｃチャンネル形状の一対の板金梁１２は、それぞれ剛性が高い部材なので共振を防止することができ、電解コンデンサ２３や冷却フィン２１の内蔵部品に悪影響を及ぼすおそれがない。   In addition, the portal-shaped cooling fan support frame 17 and the capacitor support frame 22 and the pair of C-channel sheet metal beams 12 are each a highly rigid member, so that resonance can be prevented, and the electrolytic capacitor 23 and the cooling fins 21 can be prevented. There is no risk of adversely affecting the internal components.

また、インバータ装置を長期間使用し続け、冷却フィン２１の多数のフィンが並んでいる吸気口２１ａに詰まった塵埃を除去する場合には、図１（ｂ）に示すように、第１側面板金１１の開口部１１ａを閉塞しているメンテナンスプレート２７を取り外すことで、外部からコンデンサ支持フレーム２２の門型形状の空間を介して冷却フィン２１の吸気口２１ａの清掃を行うことができるので、メンテナンス性を大幅に向上させることができる。   Further, when the inverter device is used for a long period of time and the dust clogged in the air inlet 21a in which a large number of fins of the cooling fins 21 are lined up is removed, as shown in FIG. By removing the maintenance plate 27 that closes the opening 11a of the heat sink 11, the air inlet 21a of the cooling fin 21 can be cleaned from the outside through the gate-shaped space of the capacitor support frame 22. Can greatly improve the performance.

ところで、図８に示すように、冷却ファンユニット１８から吹き出した冷却風が、冷却フィン２１の外周とウライタ１０及び第１側面板金１１との間の隙間（斜線Ａで示す領域）に流れると、発熱部品３０，３１を冷却する冷却フィン２１の冷却効率が悪くなる。しかし、本実施形態は、コンデンサ支持フレーム２２の柱部２２ｃが、斜線Ａで示した冷却フィン２１の外周とウライタ１０及び第１側面板金１１との間の隙間を閉塞しており、冷却ファンユニット１８から吹き出した冷却風が冷却フィン２１に流れずに隙間側に流れるのを防止するので、冷却フィン２１の冷却効率の低下を防止することができる。しかも、新たな部品を使用せず、電解コンデンサ２３を支持するコンデンサ支持フレーム２２によって冷却風の流れを制御することができるので、部品点数が増加せずコストアップを抑制することができる。   By the way, as shown in FIG. 8, when the cooling air blown out from the cooling fan unit 18 flows into the gap between the outer periphery of the cooling fin 21 and the writer 10 and the first side surface metal plate 11 (region indicated by the hatched line A), The cooling efficiency of the cooling fins 21 for cooling the heat generating components 30 and 31 is deteriorated. However, in this embodiment, the column portion 22c of the capacitor support frame 22 closes the gap between the outer periphery of the cooling fin 21 and the writer 10 and the first side surface metal plate 11 indicated by the oblique line A, and the cooling fan unit Since the cooling air blown from 18 is prevented from flowing to the gap side without flowing to the cooling fin 21, the cooling efficiency of the cooling fin 21 can be prevented from being lowered. In addition, since the cooling air flow can be controlled by the capacitor support frame 22 that supports the electrolytic capacitor 23 without using new components, the number of components does not increase and the cost increase can be suppressed.

１１…第１側面板金（側面カバー）、１１ａ…開口部（メンテナンス開口部）、１２…板金梁、１２ａ…ウェブ、１２ｂ，１２ｃ…フランジ部、１３…第２側面板金、１４…天面カバー、１５…底面カバー、１６ａ…上部前面カバー、１６ｂ…下部前面カバー、１７…冷却ファン支持フレーム、１７ａ…第１支持部、１７ａ１…穴、１７ｂ…第２支持部、１７ｂ１…通気穴、１７ｃ…第３支持部、１８…冷却ファンユニット、２０…ファンガイド板、２１…冷却フィン、２１ａ…吸気口、２２…コンデンサ支持フレーム、２２ａ…支持部、２２ａ１…装着穴、２２ｂ…柱部，２２ｃ…柱部（閉塞部）、２２ｂ１…排気スリット、２２ｃ１…通気穴、２３…電解コンデンサ、２５…プリント基板、２６…主回路端子台、２７…メンテナンスプレート、２７ａ…スリット、２９…トリツケイタ、３０，３１…発熱部品   DESCRIPTION OF SYMBOLS 11 ... 1st side surface sheet metal (side cover), 11a ... Opening part (maintenance opening part), 12 ... Sheet metal beam, 12a ... Web, 12b, 12c ... Flange part, 13 ... 2nd side surface sheet metal, 14 ... Top cover DESCRIPTION OF SYMBOLS 15 ... Bottom cover, 16a ... Upper front cover, 16b ... Lower front cover, 17 ... Cooling fan support frame, 17a ... First support part, 17a1 ... Hole, 17b ... Second support part, 17b1 ... Vent hole, 17c ... First 3 support parts, 18 ... cooling fan unit, 20 ... fan guide plate, 21 ... cooling fin, 21a ... intake port, 22 ... condenser support frame, 22a ... support part, 22a1 ... mounting hole, 22b ... pillar part, 22c ... pillar Part (blocking part), 22b1 ... exhaust slit, 22c1 ... vent hole, 23 ... electrolytic capacitor, 25 ... printed circuit board, 26 ... main circuit terminal block, 27 ... maintenance pre Door, 27a ... slit, 29 ... Toritsukeita, 30, 31 ... heat-generating components

Claims (6)

筐体の長手方向の一方に配置した冷却ファンユニットと、長手方向の他方に配置した電解コンデンサと、前記冷却ファンユニット及び前記電解コンデンサの間に配置した冷却フィンとを支持して収納するインバータ装置の筐体構造において、
断面Ｌ字状に形成された板金部材からなり前記冷却ファンユニットを支持する冷却ファン支持フレームと、断面Ｌ字状に形成された板金部材からなり前記電解コンデンサを支持するコンデンサ支持フレームとを備え、
前記筐体は、ウライタ部と、該ウライタ部の両縁部から立ち上がる一対の側面部とを有し、
前記冷却フィンをフィン先端側が前記ウライタ部に対向するように前記一対の側面部間に配置し、
前記ウライタ部及び前記一対の側面部と前記冷却フィンの外周との間の隙間を閉塞する閉塞部を前記電解コンデンサ支持フレームに設けることを特徴とするインバータ装置の筐体構造。 Inverter device for supporting and storing a cooling fan unit disposed on one side of the casing in the longitudinal direction, an electrolytic capacitor disposed on the other side in the longitudinal direction, and a cooling fin disposed between the cooling fan unit and the electrolytic capacitor In the housing structure of
A cooling fan support frame made of a sheet metal member formed in an L-shaped cross section and supporting the cooling fan unit; and a capacitor support frame made of a sheet metal member formed in an L-shaped cross section and supporting the electrolytic capacitor;
The housing has a writer part and a pair of side parts rising from both edges of the writer part,
The cooling fin is disposed between the pair of side surfaces so that the fin tip side faces the writer portion,
A casing structure of an inverter device, wherein a closing portion that closes a gap between the writer portion and the pair of side surface portions and an outer periphery of the cooling fin is provided in the electrolytic capacitor support frame. 前記コンデンサ支持フレームは門型形状とし、前記コンデンサ支持フレームと前記筐体の側面部とを固定することを特徴とする請求項１記載のインバータ装置の筐体構造。   2. The casing structure of an inverter device according to claim 1, wherein the capacitor support frame has a gate shape, and the capacitor support frame and a side surface portion of the casing are fixed. 前記閉塞部がコンデンサ支持フレームの柱部であることを特徴とする請求項１又は２記載のインバータ装置の筐体構造。   The casing structure of the inverter device according to claim 1, wherein the closing portion is a pillar portion of a capacitor support frame. 前記側面部は、第１側面板金と、該第１側面板金の上方に立ち上がる第２側面板金とから構成されることを特徴とする請求項１ないし３のいずれか１項に記載のインバータ装置の筐体構造。   4. The inverter device according to claim 1, wherein the side surface portion includes a first side surface metal plate and a second side surface metal plate that rises above the first side surface metal plate. 5. Enclosure structure. 前記筐体の側面部にフランジを有する一対の板金梁を対峙して固定し、前記冷却フィンを前記一対の板金梁のフランジ間に固定することを特徴とする請求項１ないし４のいずれか１項に記載のインバータ装置の筐体構造。   The pair of sheet metal beams having flanges are fixed to each other on the side surface portion of the casing, and the cooling fin is fixed between the flanges of the pair of sheet metal beams. A casing structure of the inverter device according to the item. 筐体の長手方向の一方に配置した冷却ファンユニットと、長手方向の他方に配置した電解コンデンサと、前記冷却ファンユニット及び前記電解コンデンサの間に配置した冷却フィンとを支持して収納するインバータ装置の筐体構造において、
断面Ｌ字状に形成された板金部材からなり前記冷却ファンユニットを支持する冷却ファン支持フレームと、断面Ｌ字状に形成された板金部材からなり前記電解コンデンサを支持するコンデンサ支持フレームと、フランジを有する一対の板金梁とを備え、
前記筐体は、ウライタ部と、該ウライタ部の両縁部から立ち上がる一対の側面部とを有し、
前記冷却ファン支持フレームを前記筐体の長手方向の一方に配置して固定するとともに、前記コンデンサ支持フレームを前記筐体の長手方向の他方に配置して固定し、
前記筐体の側面部に一対の前記板金梁を対峙して固定し、
前記冷却フィンをフィン先端側が前記ウライタ部に対向するように前記一対の側面部間に配置し、
前記ウライタ部及び前記一対の側面部と前記冷却フィンの外周との間の隙間を閉塞する閉塞部を前記電解コンデンサ支持フレームに設けることを特徴とするインバータ装置の筐体構造。 Inverter device for supporting and storing a cooling fan unit disposed on one side of the casing in the longitudinal direction, an electrolytic capacitor disposed on the other side in the longitudinal direction, and a cooling fin disposed between the cooling fan unit and the electrolytic capacitor In the housing structure of
A cooling fan support frame made of a sheet metal member formed in an L-shaped section and supporting the cooling fan unit; a capacitor support frame made of a sheet metal member formed in an L-shaped section and supporting the electrolytic capacitor; and a flange. A pair of sheet metal beams having,
The housing has a writer part and a pair of side parts rising from both edges of the writer part,
The cooling fan support frame is disposed and fixed on one side in the longitudinal direction of the casing, and the capacitor support frame is disposed and fixed on the other side in the longitudinal direction of the casing.
A pair of the sheet metal beams are fixed to each other on the side surface of the housing,
The cooling fin is disposed between the pair of side surfaces so that the fin tip side faces the writer portion,
A casing structure of an inverter device, wherein a closing portion that closes a gap between the writer portion and the pair of side surface portions and an outer periphery of the cooling fin is provided in the electrolytic capacitor support frame.
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