JP3498416B2 - Switchboard cooling system - Google Patents
Switchboard cooling systemInfo
- Publication number
- JP3498416B2 JP3498416B2 JP08360195A JP8360195A JP3498416B2 JP 3498416 B2 JP3498416 B2 JP 3498416B2 JP 08360195 A JP08360195 A JP 08360195A JP 8360195 A JP8360195 A JP 8360195A JP 3498416 B2 JP3498416 B2 JP 3498416B2
- Authority
- JP
- Japan
- Prior art keywords
- fan
- cooling
- push
- switchboard
- suction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Patch Boards (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、インバータ装置等を構
成する半導体素子の冷却を主な役割とする配電盤の冷却
装置に関する。
【０００２】
【従来の技術】インバータ装置を備えた配電盤において
は、スイッチング素子（トランジスタなど）を冷却フィ
ンに取り付け、スイッチングロスによる発熱熱量を排出
して素子機能の安定化を図っており、冷却ファンの設置
によって、更にその能力を強化している。その場合、冷
却能力の低下でトランジスタを破壊することのないよう
に冷却フィンの温度を監視して、温度が一定値以上に上
昇した場合には、インバータ装置を停止させるようにし
ている。その一例を図３に示す。図中、１は扉付きの外
箱（ケース）、２はエアフィルタ付き通気口、３は排気
ダクト、４は排気孔カバー、５は風洞、６はこの風洞５
の入口（通気口２に近い端）側に設置した冷却ファン
（シロッコファン）であり、トランジタ７Ａなどを構成
素子とするインバータ装置７を風洞５と一体的に配置し
ている。トランジスタ７Ａは、冷却フィン７Ｂに取り付
けている。この冷却フィン７Ｂには、その温度を監視す
るために温度検出器（温度リレー）８を設置している。
【０００３】
【発明が解決しようとする課題】しかし、このような構
成では、インバータ装置７の働きは冷却装置の冷却能力
に左右されることになり、冷却装置に能力低下が生じた
時には、温度リレー８の動作でインバータ装置７が停止
する。このため、無停電での運転を要求される重要負荷
に対しては、インバータ装置全体をバックアップする、
もう一台の冷却装置が必要となる。
【０００４】そこで本発明は、上記課題を解決し、効果
的な冷却が期待でき、延いては動作信頼性の向上が図れ
る配電盤の冷却装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】本発明は、インバータ装
置等を構成する半導体素子を冷却フィンに取り付け、冷
却ファンで強制的に風冷する配電盤の冷却装置におい
て、冷却ファンとして押し込みファンと吸い込みファン
の両方を設けるとともに、冷却フィンに温度検出器を設
置し、常時はいずれか一方のファンのみを運転させ、運
転させたファンの冷却能力低下による冷却フィンの温度
上昇を温度検出器で検出し、この検出出力によって冷却
ファンの切替を行うようにする一方、吸い込みファンの
設置個所に、この冷却ファンを通る排気路と、直に盤外
に通じる排気路を設け、直に盤外に通じる排気路には、
押し込みファンの運転時による風圧で開き、吸い込みフ
ァンの運転時による負圧で閉じる排気用可動板を設け、
また押し込みファンの吐出口付近の通風路壁面に吸気口
を設け、この吸気口には、押し込みファンの運転時によ
る風圧で閉じ、吸い込みファンの運転時による負圧で開
く吸気用可動板を付設したことを特徴とする。
【０００６】
【作用】常時は通風路の上流側に位置する押し込みファ
ンが運転されている。この冷却ファンの冷却能力が低下
して冷却フィンの温度が上昇すると、温度検出器の検出
動作によって吸い込みファンの運転に切り替わる。吸い
込みファンの運転時には排気用可動板が閉じ、吸気用可
動板が開く。このため、管路ロスは押し込みファン運転
時と同等となり、吸い込みファンに押し込みファンと同
等の能力のものを使用しても十分な冷却能力が得られ
る。つまり、重要負荷などへの電力供給は継続されるこ
とになる。冷却能力の低下した押し込みファンは、支障
のない時期に交換する。
【０００７】
【実施例】以下、本発明を図面に示す実施例に基づいて
詳細に説明する。
【０００８】本発明による配電盤の冷却装置の実施例を
図１に示す。図中、１は扉付きの外箱（ケース）、２は
エアフィルタ付き通気口、３は排気ダクト、４は排気孔
カバー、５は風洞、６はこの風洞５の入口（通気口２に
近い端）側に設置した冷却ファン（押し込みファン）、
７はトランジタ７Ａなどを構成素子とするインバータ装
置で、風洞５と一体的に配置している。トランジスタ７
Ａは、冷却フィン７Ｂに取り付けている。この冷却フィ
ン７Ｂには、その温度を監視するために温度検出器（温
度リレー）８，９を設置している。外箱１の上部の排気
孔カバー４の内側に冷却ファン（吸い込みファン）１０
を設置するとともに、この吸い込みファン１０を通る排
気路と直に盤外に通じる排気路とに分かれる分流形の排
気路を形成し、直に盤外に通じる排気路に吸い込みファ
ン１０の運転時に負圧により自動的に閉じる排気用可動
板１１を設けている。また、風洞５の押し込みファン６
の吐出口付近の壁面に開口を設け、この部分に吸い込み
ファン１０の運転時に負圧により自動的に開く吸気用可
動板１２を付設している。押し込みファン６及び吸い込
みファン１０は、シロッコファンを使用している。その
能力は同等とする。
【０００９】なお、温度リレー８はトランジスタ保護
用、温度リレー９は吸い込みファン運転用としており、
設定温度はトランジスタ保護用の温度リレー８の方を高
くしている。
【００１０】次に、動作について述べる。常時は、通風
路の上流側に位置する押し込みファン６が運転されてい
る。押し込みファン６の運転時には、図２（ａ）に示す
ように風圧により排気用可動板１１が開き、吸気用可動
板１２が閉じる。冷却風は、エアフィルタ付き通気口２
から外箱１内に入り、押し込みファン６によって風洞５
内に送り込まれる。風洞５を通過する時に冷却フィン７
Ｂから熱を奪い、排気ダクト３を経て排気孔カバー４内
に流入する。この時には、吸い込みファン１０は運転停
止状態にあり、図２（ａ）に示すように風圧によって可
動板１１が開き、冷却風の大部分がこの排気路を通って
盤外へ出、一部が吸い込みファン１０側の排気路を通っ
て盤外へ出る。
【００１１】もし、押し込みファン６に異常が生じてそ
の冷却能力が低下した場合には、冷却フィン７Ｂの温度
が上昇し、温度リレー９が動作する。これに伴い、吸い
込みファン１０の運転に切り替わり、押し込みファン６
の運転は停止される。吸い込みファン１０の運転時に
は、図２（ｂ）に示すように風圧により吸気用可動板１
２が開く。冷却風はエアフィルタ付き通気口２から外箱
１内に入り、可動板１２が開いた状態の開口を経て風洞
５に流入するようになり、継続して冷却風が風洞５内を
通流する。この場合、図２（ｂ）に示すように吸い込み
ファン１０の運転開始と同時に負圧によって可動板１１
が自動的に閉じ、冷却風は吸い込みファン１０側の排気
路を通って盤外へ出る。この状態での管路のロスは、押
し込みファン運転時と同等であり、押し込みファン６と
同等の能力の吸い込みファン１０による強制通風でも十
分な冷却力が得られる。この結果、所期の冷却能力が効
率よく維持されるようになり、重要負荷などへの電力供
給は継続される。なお、冷却能力の低下した押し込みフ
ァン６は、支障のない時期に交換する。
【００１２】
【発明の効果】以上のように本発明によれば、冷却ファ
ンとして押し込みファンと吸い込みファンの両方を設
け、冷却フィンの温度上昇を温度検出器で検出し、この
検出出力によってファンの運転の切替を行うようにした
ので、常時運転の冷却ファンの冷却能力が低下した場合
には自動的に他方の冷却ファンに切り替わり、負荷へは
継続して電力を供給することができる。また、分流形の
排気路として、一方の排気路には吸い込みファンを、他
方の排気路には、押し込みファンの運転時による風圧で
開き、吸い込みファンの運転時による負圧で閉じる排気
用可動板を設置する一方、押し込みファンの吐出口付近
の通風路壁面に吸気口を設け、この部分には、押し込み
ファンの運転時による風圧で閉じ、吸い込みファンの運
転時による負圧で開く吸気用可動板を付設したので、い
ずれの冷却ファンでも管路のロスは同等となり、同等の
能力の冷却ファンでも所期の冷却能力を効率よく維持す
ることができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for a power distribution panel whose main function is to cool semiconductor elements constituting an inverter device and the like. 2. Description of the Related Art In a switchboard provided with an inverter device, a switching element (eg, a transistor) is mounted on a cooling fin to discharge heat generated by switching loss to stabilize the element function. Has further strengthened its capabilities. In this case, the temperature of the cooling fin is monitored so that the transistor is not destroyed due to a decrease in the cooling capacity, and when the temperature rises to a certain value or more, the inverter device is stopped. An example is shown in FIG. In the figure, 1 is an outer box (case) with a door, 2 is a vent with an air filter, 3 is an exhaust duct, 4 is an exhaust hole cover, 5 is a wind tunnel, 6 is this wind tunnel 5
, A cooling fan (sirocco fan) installed on the side of the inlet (the end close to the ventilation port 2), in which an inverter device 7 including a transistor 7A or the like as a component is disposed integrally with the wind tunnel 5. The transistor 7A is mounted on the cooling fin 7B. The cooling fin 7B is provided with a temperature detector (temperature relay) 8 for monitoring the temperature. [0003] However, in such a configuration, the operation of the inverter device 7 depends on the cooling capacity of the cooling device. The operation of the relay 8 stops the inverter device 7. For this reason, for important loads that require uninterrupted operation, the entire inverter unit is backed up,
Another cooling device is required. Accordingly, an object of the present invention is to solve the above-mentioned problems, and to provide a cooling device for a switchboard which can be expected to be effectively cooled and furthermore can improve the operation reliability. According to the present invention, a push-in fan is used as a cooling fan in a switchboard cooling device in which a semiconductor element constituting an inverter device or the like is mounted on a cooling fin and forcibly air-cooled by a cooling fan. and with suction provided both fans, the temperature detector installed in the cooling fin, normally is operated only one fan or luck
Cooling fin temperature due to reduced cooling capacity of rotated fan
The rise is detected by the temperature detector, and the cooling fan is switched by this detection output.At the installation location of the suction fan, an exhaust path that passes through the cooling fan and an exhaust path that directly leads to the outside of the panel are provided. , In the exhaust path that leads directly to the outside of the panel ,
Open with the wind pressure generated by the operation of the push-in fan,
An exhaust movable plate that closes with negative pressure due to the operation of the fan is provided,
In addition, an intake port is provided on the ventilation path wall near the discharge port of the push-in fan, and this intake port is provided when the push-in fan is operated.
A movable plate for intake is provided which is closed by a low wind pressure and opened by a negative pressure due to the operation of the suction fan . The push fan located at the upstream side of the ventilation path is normally operated. When the cooling capacity of the cooling fan decreases and the temperature of the cooling fins increases, the operation of the suction fan is switched to the operation of the suction fan by the detection operation of the temperature detector. During operation of the suction fan, the movable plate for exhaust closes and the movable plate for intake opens. For this reason, the pipeline loss is equal to that during the operation of the push-in fan, and sufficient cooling capacity can be obtained even if a suction fan having the same capacity as the push-in fan is used. That is, power supply to important loads and the like is continued. Replace push-in fans with reduced cooling capacity at a time when there is no problem. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. FIG. 1 shows an embodiment of a switchboard cooling apparatus according to the present invention. In the figure, 1 is an outer box (case) with a door, 2 is a vent with an air filter, 3 is an exhaust duct, 4 is an exhaust hole cover, 5 is a wind tunnel, and 6 is an entrance of the wind tunnel 5 (close to the vent 2). End) side cooling fan (push-in fan),
Reference numeral 7 denotes an inverter device including a transistor 7A or the like as a constituent element, and is arranged integrally with the wind tunnel 5. Transistor 7
A is attached to the cooling fin 7B. The cooling fins 7B are provided with temperature detectors (temperature relays) 8 and 9 for monitoring the temperature. A cooling fan (suction fan) 10 is provided inside the exhaust hole cover 4 at the upper part of the outer box 1.
And a diversion type exhaust path divided into an exhaust path passing through the suction fan 10 and an exhaust path directly leading to the outside of the panel is formed. An exhaust movable plate 11 that is automatically closed by pressure is provided. In addition, the pushing fan 6 of the wind tunnel 5
An opening is provided in the wall near the discharge port of the suction fan, and a suction movable plate 12 which is automatically opened by a negative pressure when the suction fan 10 is operated is provided in this portion. The push-in fan 6 and the suction fan 10 use sirocco fans. Their abilities are equivalent. The temperature relay 8 is for transistor protection, and the temperature relay 9 is for suction fan operation.
The set temperature is higher for the temperature relay 8 for transistor protection. Next, the operation will be described. Normally, the push-in fan 6 located on the upstream side of the ventilation path is operated. When the push-in fan 6 is operated, the exhaust movable plate 11 is opened by the wind pressure and the intake movable plate 12 is closed as shown in FIG. Cooling air is passed through the vent 2 with air filter.
From the outer box 1 and the wind tunnel 5
Sent inside. Cooling fins 7 when passing through wind tunnel 5
Heat is taken from B and flows into the exhaust hole cover 4 via the exhaust duct 3. At this time, the suction fan 10 is in an operation stop state, the movable plate 11 is opened by the wind pressure as shown in FIG. It goes out of the board through the exhaust passage on the suction fan 10 side. If an abnormality occurs in the push-in fan 6 and its cooling capacity is reduced, the temperature of the cooling fin 7B rises and the temperature relay 9 operates. Accordingly, the operation is switched to the operation of the suction fan 10 and
Is stopped. During operation of the suction fan 10, as shown in FIG.
2 opens. The cooling air enters the outer case 1 through the ventilation port 2 with the air filter, flows into the wind tunnel 5 through the opening in which the movable plate 12 is open, and the cooling air continuously flows through the wind tunnel 5. . In this case, as shown in FIG. 2B, the movable plate 11
Automatically closes, and the cooling air flows out of the board through the exhaust path on the suction fan 10 side. The loss of the pipeline in this state is equivalent to that during the operation of the push-in fan, and sufficient cooling power can be obtained even by forced ventilation by the suction fan 10 having the same performance as the push-in fan 6. As a result, the desired cooling capacity is efficiently maintained, and power supply to important loads and the like is continued. The push-in fan 6 whose cooling capacity has been reduced is replaced at a time when there is no problem. As described above, according to the present invention, both the push-in fan and the suction fan are provided as the cooling fans, and the temperature rise of the cooling fins is detected by the temperature detector. Since the operation of the fan is switched by the output, when the cooling capacity of the cooling fan that is operating constantly decreases, it automatically switches to the other cooling fan, and the power can be continuously supplied to the load. it can. Further, as the exhaust passage of the shunt type, the suction fan in one exhaust path, the other exhaust passage, at a wind pressure due during the operation of pushing the fan
Open while installing the exhaust movable plate to close the negative pressure by the time the operation of the suction fan, an inlet provided in the ventilation passage wall surface of the vicinity of the discharge port of the pushing fans, in this portion, pushing
Closed by the wind pressure during fan operation,
Since the movable plate for intake which is opened by the negative pressure due to the rotation is provided, the loss of the pipeline is equal in any of the cooling fans, and even if the cooling fans have the same capacity, the expected cooling capacity can be efficiently maintained.
【図面の簡単な説明】
【図１】本発明による配電盤の冷却装置の実施例を示す
構成説明図。
【図２】実施例における冷却風の流れを示す動作説明図
で、（ａ）は押し込みファン運転時、（ｂ）は吸い込み
ファン運転時。
【図３】配電盤の冷却装置の従来例を示す構成説明図。
【符号の説明】
１…外箱
２…通気口
４…排気孔カバー
５…風洞
６…押し込みファン
７…インバータ装置
７Ａ…トランジスタ
７Ｂ…冷却フィン
８，９…温度リレー
１０…吸い込みファン
１１…排気用可動板
１２…吸気用可動板BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration explanatory view showing an embodiment of a switchboard cooling device according to the present invention. FIGS. 2A and 2B are operation explanatory diagrams showing the flow of cooling air in the embodiment, in which FIG. 2A shows a state during a pushing fan operation, and FIG. 2B shows a state during a suction fan operation. FIG. 3 is a configuration explanatory view showing a conventional example of a cooling device for a switchboard. [Description of Signs] 1 ... Outer case 2 ... Vent 4 ... Exhaust hole cover 5 ... Wind tunnel 6 ... Push-in fan 7 ... Inverter 7A ... Transistor 7B ... Cooling fins 8 and 9 ... Temperature relay 10 ... Suction fan 11 ... Exhaust Movable plate 12 ... Movable plate for intake
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02B 1/56 H05K 7/20 F25D 1/00 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H02B 1/56 H05K 7/20 F25D 1/00
Claims (1)
を冷却フィンに取り付け、冷却ファンで強制的に風冷す
る配電盤の冷却装置において、冷却ファンとして押し込
みファンと吸い込みファンの両方を設けるとともに、冷
却フィンに温度検出器を設置し、常時はいずれか一方の
ファンのみを運転させ、運転させたファンの冷却能力低
下による冷却フィンの温度上昇を温度検出器で検出し、
この検出出力によって冷却ファンの切替を行うようにす
る一方、吸い込みファンの設置個所に、この冷却ファン
を通る排気路と、直に盤外に通じる排気路を設け、直に
盤外に通じる排気路には、押し込みファンの運転時によ
る風圧で開き、吸い込みファンの運転時による負圧で閉
じる排気用可動板を設け、また押し込みファンの吐出口
付近の通風路壁面に吸気口を設け、この吸気口には、押
し込みファンの運転時による風圧で閉じ、吸い込みファ
ンの運転時による負圧で開く吸気用可動板を付設したこ
とを特徴とする配電盤の冷却装置。(57) [Claims 1] In a cooling device of a switchboard in which a semiconductor element constituting an inverter device or the like is mounted on a cooling fin and forcibly air-cooled by a cooling fan, a push-in fan and a suction fan are used as cooling fans. In addition to providing both fans, a temperature detector is installed on the cooling fin, and one of them is always
Only the fan is operated, and the cooling capacity of the operated fan is low.
The temperature rise of the cooling fin due to the bottom is detected by the temperature detector,
While the cooling fan is switched by this detection output, an exhaust path that passes through the cooling fan and an exhaust path that directly leads to the outside of the panel are provided at the installation location of the suction fan, and an exhaust path that directly leads to the outside of the panel. Is set during operation of the push-in fan.
That open in the wind pressure, suction is provided in the closed <br/> Jill exhaust movable plate at a negative pressure by during operation of the fan, also an inlet is provided in the ventilation passage wall surface of the vicinity of the discharge port of the pushing fans, to the intake port , Push
Closes with the wind pressure generated during the operation of the
A cooling device for a switchboard, further comprising a movable plate for intake that opens at a negative pressure during operation of the switchboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08360195A JP3498416B2 (en) | 1995-04-10 | 1995-04-10 | Switchboard cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08360195A JP3498416B2 (en) | 1995-04-10 | 1995-04-10 | Switchboard cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08280106A JPH08280106A (en) | 1996-10-22 |
| JP3498416B2 true JP3498416B2 (en) | 2004-02-16 |
Family
ID=13807014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08360195A Expired - Fee Related JP3498416B2 (en) | 1995-04-10 | 1995-04-10 | Switchboard cooling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3498416B2 (en) |
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| CN106654888A (en) * | 2017-01-19 | 2017-05-10 | 国网山东省电力公司滨州供电公司 | Transformer cabinet for power marketing |
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| KR101633807B1 (en) * | 2015-08-11 | 2016-06-27 | (주) 백산정밀판금 | Switching board with function of inner temperature controlling |
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1995
- 1995-04-10 JP JP08360195A patent/JP3498416B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654888A (en) * | 2017-01-19 | 2017-05-10 | 国网山东省电力公司滨州供电公司 | Transformer cabinet for power marketing |
| CN109634331A (en) * | 2019-01-14 | 2019-04-16 | 国家电网公司 | A kind of transformer substation switch room temperature humidity control system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08280106A (en) | 1996-10-22 |
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