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JP2007267478A - Control panel - Google Patents

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Publication number
JP2007267478A
JP2007267478A JP2006087166A JP2006087166A JP2007267478A JP 2007267478 A JP2007267478 A JP 2007267478A JP 2006087166 A JP2006087166 A JP 2006087166A JP 2006087166 A JP2006087166 A JP 2006087166A JP 2007267478 A JP2007267478 A JP 2007267478A
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Prior art keywords
duct
control panel
inverter
heat
heating element
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Granted
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JP2006087166A
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Japanese (ja)
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JP4543333B2 (en
Inventor
Toshiyuki Osanawa
俊幸 長縄
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Murata Machinery Ltd
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Murata Machinery Ltd
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Publication of JP4543333B2 publication Critical patent/JP4543333B2/en
Expired - Fee Related legal-status Critical Current
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Abstract

<P>PROBLEM TO BE SOLVED: To efficiently prevent the overheating of a heating element and a control device of a control unit. <P>SOLUTION: The inside of a control panel 2 is divided into a front space 17 and a backside duct 28 with a partition board 16. An inverter 10 is provided at the lower portion of the front space 17, and control units 12 are provided at the upper portions. A thermal insulation board 18 is provided between them. A slit 20 is provided in the lower portion of the thermal insulation board 18, a lower inlet 24 is provided at the bottom side of the inverter 10, and a heat sink 30 of the inverter 10 is made to protrude inside the duct 28. Air inside the duct 28 is exhausted by an exhaust fan 6. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明は発熱体を内蔵した制御盤からの排気に関する。   The present invention relates to exhaust from a control panel incorporating a heating element.

制御盤の下部にインバータなどの発熱体を配置し、その上部に制御ユニットを配置した制御盤が用いられている。そして制御盤の下方に空気取り入れ口もしくは吸気ファンを設け、上部に排気ファンを設けて、制御盤内の空気を換気している。しかしながらこの種の制御盤では、盤内の空気全体を換気するため排熱効率が低く、盤内の温度が上昇するとの問題があった。   A control panel in which a heating element such as an inverter is arranged at the lower part of the control panel and a control unit is arranged at the upper part is used. An air intake or an intake fan is provided below the control panel, and an exhaust fan is provided at the top to ventilate the air in the control panel. However, this type of control panel has a problem that the exhaust heat efficiency is low because the entire air in the panel is ventilated, and the temperature in the panel rises.

この発明の課題は、制御盤の発熱体と制御部との過熱を効率的に防止することにある。
請求項2の発明での追加の課題は、発熱体の温度上昇をさらに抑制すると共に、発熱体の上部の制御の温度上昇を効率的に防止することにある。
請求項3の発明での追加の課題は、発熱体からの発熱を効率的にダクト内へ排熱することにある。
An object of the present invention is to efficiently prevent overheating of a heating element of a control panel and a control unit.
An additional problem in the invention of claim 2 is to further prevent the temperature rise of the heating element and to efficiently prevent the temperature rise of the control of the upper part of the heating element.
An additional problem in the invention of claim 3 is to efficiently exhaust heat generated from the heating element into the duct.

この発明の制御盤は、内部を前面側と背面側に仕切る仕切りを設け、前面側に制御部と発熱体とを配置し、背面側をダクトとすると共に、該ダクト内へ前記発熱体からの発熱を放熱するための放熱手段と、該ダクト内の空気を排気する排気ファンとを設けたことを特徴とする。   The control panel according to the present invention is provided with a partition for partitioning the inside into a front side and a back side, and a control unit and a heating element are arranged on the front side, and the back side is used as a duct. A heat dissipating means for dissipating heat and an exhaust fan for exhausting the air in the duct are provided.

好ましくは、前記放熱手段は、発熱体の上部で仕切りに設けた吸気用のスリットである。   Preferably, the heat dissipating means is an intake slit provided in a partition above the heat generating element.

また好ましくは、前記発熱体の背面側に、前記ダクト内へ突き出すように放熱フィンを設ける。   Preferably, a radiation fin is provided on the back side of the heating element so as to protrude into the duct.

この発明では、仕切りによって簡単にダクトを形成し、発熱体からの熱を放熱手段によりダクトへ排熱して、排気ファンで排気する。このため発熱体を集中的に冷却して、その過熱を防止できる。また制御部自体の発熱は発熱体からの発熱に比べて僅かなので、発熱体を集中的に冷却すると、制御部の過熱も防止できる。このため全体として、比較的少ない風量で発熱体と制御部双方の過熱を防止できる。   In the present invention, the duct is simply formed by the partition, the heat from the heating element is exhausted to the duct by the heat radiating means, and exhausted by the exhaust fan. For this reason, the heating element can be intensively cooled to prevent overheating. Moreover, since the heat generation of the control unit itself is small compared to the heat generation from the heat generating element, overheating of the control unit can be prevented by cooling the heat generating element intensively. Therefore, as a whole, overheating of both the heating element and the control unit can be prevented with a relatively small air volume.

発熱体の上部にスリットを設けてスリットからダクトへ排気するようにすると、発熱体で加熱されて上昇した空気がスリットからダクトへ流れ、発熱体を冷却するだけでなく、発熱体の上部に配置された制御部などへ発熱体からの熱が伝わるのを防止できる。   If a slit is provided in the upper part of the heating element and exhausted from the slit to the duct, the air heated by the heating element rises and flows from the slit to the duct, not only cooling the heating element but also placing it on the upper part of the heating element It is possible to prevent the heat from the heating element from being transmitted to the control unit.

発熱体の背面側にダクトへ突き出すように放熱フィンを設けると、ダクト内の気流で効率的に発熱体を冷却できる。   If the heat dissipating fins are provided on the back side of the heating element so as to protrude into the duct, the heating element can be efficiently cooled by the air flow in the duct.

以下に本発明を実施するための最適実施例を示す。   In the following, an optimum embodiment for carrying out the present invention will be shown.

図1〜図4に、実施例の制御盤2を示す。4は正面扉で、6は排気ファンで、正面扉4の上部にあり、正面扉4の下部には吸気ファン8がある。なお吸気ファン8に代えて単なる吸気口を設けても良い。   1 to 4 show a control panel 2 of the embodiment. 4 is a front door, 6 is an exhaust fan, which is located at the upper part of the front door 4, and an intake fan 8 at the lower part of the front door 4. Instead of the intake fan 8, a simple intake port may be provided.

制御盤2の内部は仕切り板16により、前面側と背面側に仕切られ、背面側がダクト28となる。なお仕切り板16は、インバータ10や制御ユニット12を配置するための取付板に兼用する。前面側の下部にはインバータ10があり、その上部に制御ユニット12が配置してある。さらに前面側の最上部にはダクト出口14があり、仕切り板15があり、ダクト出口14に達した空気は排気ファン6によって排気される。   The interior of the control panel 2 is partitioned into a front side and a back side by a partition plate 16, and the back side is a duct 28. The partition plate 16 is also used as a mounting plate for arranging the inverter 10 and the control unit 12. There is an inverter 10 in the lower part on the front side, and a control unit 12 is arranged in the upper part. Further, a duct outlet 14 is provided at the uppermost part on the front side, and a partition plate 15 is provided. Air reaching the duct outlet 14 is exhausted by the exhaust fan 6.

インバータ10の上部には遮熱板18があり、その下側には、仕切り板16に設けた開口からなるスリット20が複数設けられ、スリット20の左右に例えば側壁22を設けて、インバータ10で加熱された空気をスリット20へと導く。さらに制御盤2の前面側は、遮熱板18と仕切り板15で上中下の3段階に仕切られている。インバータ10の下部には下部吸気口24があり、制御盤2の前面側からダクト28へと空気を吸気する。26は支持板で、インバータ10の底面を支持しており、特に設けなくても良い。   There is a heat shield 18 at the top of the inverter 10, and a plurality of slits 20 made of openings provided in the partition plate 16 are provided on the lower side of the inverter 10, and side walls 22 are provided on the left and right of the slit 20. The heated air is guided to the slit 20. Further, the front side of the control panel 2 is partitioned into three stages of upper, middle and lower by a heat shield plate 18 and a partition plate 15. A lower air inlet 24 is provided at the lower part of the inverter 10 and sucks air from the front side of the control panel 2 into the duct 28. Reference numeral 26 denotes a support plate that supports the bottom surface of the inverter 10 and may be omitted.

インバータ10の背面側にはフィン状のヒートシンク30が複数設けられ、ヒートシンク30はダクト28内に突き出して鉛直方向に延び、下部吸気口24から吸気された空気がヒートシンク30の間の流路を通って上昇する。32は背面壁で、制御盤2全体の背面の壁面である。   A plurality of fin-like heat sinks 30 are provided on the back side of the inverter 10. The heat sinks 30 protrude into the duct 28 and extend in the vertical direction, and the air sucked from the lower intake port 24 passes through the flow path between the heat sinks 30. Rise. Reference numeral 32 denotes a rear wall, which is a rear wall surface of the entire control panel 2.

実施例の動作を示す。制御盤2の内部での発熱はインバータ10に集中し、制御ユニット12での発熱はわずかである。吸気ファン8から吸気された空気は、その一部が下部吸気口24を通ってダクト28に入り、ヒートシンク30に沿って上昇しながらインバータ10を冷却する。吸気された空気の一部は遮熱板18の下部を通って、側壁22にガイドされながらスリット20を介してダクト28内に入り、インバータ10の上側に溜まる加熱された空気をダクト28内へと流し込む。そしてダクト28内の空気は排気ファン6により外部に排気される。   The operation of the embodiment will be described. The heat generated inside the control panel 2 is concentrated on the inverter 10, and the heat generated in the control unit 12 is slight. Part of the air sucked from the intake fan 8 enters the duct 28 through the lower intake port 24 and cools the inverter 10 while rising along the heat sink 30. Part of the sucked air passes through the lower part of the heat shield 18 and enters the duct 28 through the slit 20 while being guided by the side wall 22, and the heated air accumulated on the upper side of the inverter 10 enters the duct 28. And pour. The air in the duct 28 is exhausted to the outside by the exhaust fan 6.

実施例ではインバータ10からの発熱は、ヒートシンク30の周囲の気流と、遮熱板18の下側からスリット20へ入る気流とにより、ダクト28内に放熱される。制御ユニット12付近の気流は僅かであるが、気流の大部分を用いてインバータ10を冷却するので、放熱できる熱量は、気流を制御盤2の内部の全体に分散させる場合に比べて大きい。この結果、制御ユニット12側へ流れる気流は僅かであるにもかかわらず、その温度上昇を小さくすることができる。なお必要であれば、仕切り板15に小孔33を設けて、仕切り板15の下部に加熱された空気が溜まるのを防止すると良い。この場合、仕切り板15の下側の空気温度が、ダクト出口14での空気温度よりも高くなると、小孔33を介しての対流が始まって制御ユニット12を冷却し、仕切り板15の下側での空気温度がダクト出口14の空気温度よりも低い場合、小孔33を流れる気流はほとんど生じない。   In the embodiment, the heat generated from the inverter 10 is radiated into the duct 28 by the airflow around the heat sink 30 and the airflow entering the slit 20 from the lower side of the heat shield plate 18. Although the airflow in the vicinity of the control unit 12 is slight, the inverter 10 is cooled by using most of the airflow, so the amount of heat that can be dissipated is larger than when the airflow is dispersed throughout the control panel 2. As a result, although the airflow flowing to the control unit 12 side is slight, the temperature rise can be reduced. If necessary, a small hole 33 may be provided in the partition plate 15 to prevent the heated air from accumulating in the lower portion of the partition plate 15. In this case, when the air temperature on the lower side of the partition plate 15 becomes higher than the air temperature at the duct outlet 14, convection through the small holes 33 starts to cool the control unit 12, and the lower side of the partition plate 15. When the air temperature at is lower than the air temperature at the duct outlet 14, almost no airflow flows through the small holes 33.

インバータ10はヒートシンク30の周囲を流れる気流により冷却され、インバータ10から制御ユニット12側へ流れる熱は、遮熱板18により遮られて、スリット20を流れる気流によりダクト28側へ排熱される。この2つの気流でインバータ10を集中的に冷却し、インバータ10の過熱を防止する。   The inverter 10 is cooled by the airflow flowing around the heat sink 30, and the heat flowing from the inverter 10 to the control unit 12 side is blocked by the heat shield plate 18, and is exhausted to the duct 28 side by the airflow flowing through the slit 20. The inverter 10 is intensively cooled by these two airflows to prevent the inverter 10 from overheating.

実施例では発熱体の例としてインバータ10を示したが、これに限らず各種のトランス類などの電力機器でも同様である。また制御ユニット12の種類は任意である。
In the embodiment, the inverter 10 is shown as an example of the heating element. The type of the control unit 12 is arbitrary.

実施例の制御盤の正面図Front view of the control panel of the embodiment 実施例の制御盤から正面扉を取り外した姿を示す図The figure which shows the figure which removed the front door from the control panel of the Example 図2のIII−III方向拡大断面図III-III direction enlarged sectional view of FIG. 実施例の制御盤の鉛直方向断面図Vertical sectional view of the control panel of the embodiment

符号の説明Explanation of symbols

2 制御盤
4 正面扉
6 排気ファン
8 吸気ファン
10 インバータ
12 制御ユニット
14 ダクト出口
15,16 仕切り板
17 前面スペース
18 遮熱板
20 スリット
22 側壁
24 下部吸気口
26 支持板
28 ダクト
30 ヒートシンク
32 背面壁
33 小孔
2 Control panel 4 Front door 6 Exhaust fan 8 Intake fan 10 Inverter 12 Control unit 14 Duct outlets 15 and 16 Partition plate 17 Front space 18 Heat shield plate 20 Slit 22 Side wall 24 Lower intake port 26 Support plate 28 Duct 30 Heat sink 32 Back wall 33 Small hole

Claims (3)

内部を前面側と背面側に仕切る仕切りを設け、前面側に制御部と発熱体とを配置し、背面側をダクトとすると共に、
該ダクト内へ前記発熱体からの発熱を放熱するための放熱手段と、該ダクト内の空気を排気する排気ファンとを設けたことを特徴とする制御盤。
A partition that partitions the inside into a front side and a back side is provided, a control unit and a heating element are arranged on the front side, and the back side is a duct,
A control panel comprising a heat radiating means for radiating heat generated from the heat generating element and an exhaust fan for exhausting air in the duct into the duct.
前記放熱手段は、発熱体の上部で仕切りに設けた吸気用のスリットであることを特徴とする、請求項1の制御盤。 2. The control panel according to claim 1, wherein the heat dissipating means is an intake slit provided in a partition above the heating element. 前記発熱体の背面側に、前記ダクト内へ突き出すように放熱フィンを設けたことを特徴とする、請求項1または2の制御盤。
The control panel according to claim 1, wherein a heat radiation fin is provided on the back side of the heating element so as to protrude into the duct.
JP2006087166A 2006-03-28 2006-03-28 control panel Expired - Fee Related JP4543333B2 (en)

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JP4543333B2 JP4543333B2 (en) 2010-09-15

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CN102832015A (en) * 2011-06-14 2012-12-19 富士电机株式会社 Cooling device of tranformer
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US9863428B2 (en) 2012-10-30 2018-01-09 Sansha Electric Manufacturing Co., Ltd. Fan control unit and power conditioner
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