JP3498400B2 - Switchboard cooling system - Google Patents
Switchboard cooling systemInfo
- Publication number
- JP3498400B2 JP3498400B2 JP00682295A JP682295A JP3498400B2 JP 3498400 B2 JP3498400 B2 JP 3498400B2 JP 00682295 A JP00682295 A JP 00682295A JP 682295 A JP682295 A JP 682295A JP 3498400 B2 JP3498400 B2 JP 3498400B2
- Authority
- JP
- Japan
- Prior art keywords
- fan
- cooling
- push
- switchboard
- temperature
- 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
- H02B1/565—Cooling; Ventilation for cabinets
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任務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
ンに取り付けて、その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他方
の冷却ファンに切替て運転するよう構成し、且つ吸い込
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可動板
を設け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
込みファンには、管路ロスを考慮して、押し込みファン
より若干能力の大きいものが使用されており、重要負荷
などへの電力供給は継続される。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可動板１１
を設けている。押し込みファン６及び吸い込みファン１
０は、シロッコファンを使用している。管路ロスを考慮
して、吸い込みファン１０には押し込みファン６より若
干能力の大きいものを使用する。また、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。
【０００９】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。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７Ｂ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。
【００１０】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には、管路ロ
スを考慮して、押し込みファン６より若干能力の大きい
ものが使用されており、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。
【００１１】
【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、吸い込み
ファンには押し込みファンより若干能力の大きいものを
使用するとともに、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可動板を設置したので、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 distribution board whose main task is to cool a semiconductor element constituting an inverter device or the like. 2. Description of the Related Art In a switchboard provided with an inverter device, a switching element (such as a transistor) is attached to a cooling fin to discharge heat generated by a switching loss to stabilize the function of the element. The installation of a cooling fan further enhances its capacity. 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 a cooling fan (sirocco fan) installed at the entrance (end near the ventilation port 2) side of the wind tunnel 5, and includes a transistor 7A and the like as constituent elements. The inverter device 7 is arranged 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, another cooling device that backs up the entire inverter device is required for a critical load that requires uninterrupted operation. 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 other
To operate by switching to the cooling fan of
Exhaust passage through this cooling fan at the location of the fan
And an exhaust path that leads directly to the outside of the panel, and directly leads to the outside of the panel
The exhaust path is opened by the wind pressure caused by the operation of the push-in fan.
Movable plate that closes with negative pressure due to suction fan operation
Is provided . 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. A suction fan having a slightly higher capacity than the push-in fan is used in consideration of a pipe loss, and power supply to an important load or 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 diverting type exhaust path is formed which is divided into an exhaust path passing through the suction fan 10 and an exhaust path directly leading to the outside of the panel. Movable plate 11 automatically closes by pressure
Is provided. Push fan 6 and suction fan 1
0 uses a sirocco fan. In consideration of a pipe loss, a suction fan having a slightly higher capacity than the pushing fan 6 is used. The temperature relay 8 is for transistor protection, the temperature relay 9 is for suction fan operation, and the set temperature is higher for the transistor protection temperature relay 8. Next, the operation will be described. Normally, the push-in fan 6 located on the upstream side of the ventilation path is operated. The cooling air enters the outer box 1 through the ventilation port 2 with the air filter, and is sent into the wind tunnel 5 by the pushing fan 6. When passing through the wind tunnel 5, heat is taken from the cooling fins 7B and flows into the exhaust hole cover 4 through the exhaust duct 3.
At this time, the suction fan 10 is in an operation stop state, the movable plate 11 is opened by wind pressure as shown in FIG. 2A, and most of the cooling air flows out of the board through this exhaust path.
Part of the air exits the board through the exhaust path on the suction fan 10 side. [0010] 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. The suction fan 10 has a slightly higher capacity than the pushing fan 6 in consideration of the pipe loss, and the cooling air continuously flows through the wind tunnel 5. In this case, as shown in FIG. 2B, the movable plate 11 is automatically closed by the negative pressure simultaneously with the start of the operation of the suction fan 10, and the cooling air flows out of the board through the exhaust path of the suction fan 10. 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 a push-in fan and a suction fan are provided as cooling fans, and the temperature rise of the cooling fins is detected by the temperature detector. Since the operation of the fan is switched according to the output, if 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. In addition, use a suction fan that has a slightly higher capacity than the push-in fan, and use a split-type exhaust path with a suction fan in one exhaust path and a push-in fan in the other exhaust path.
Open with the wind pressure generated during fan operation,
Since the movable plate that closes with the negative pressure due to turning is installed, the desired 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】本発明による配電盤の冷却装置の実施例に係
り、（ａ）（ｂ）は排気部の動作説明図。
【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…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 explanatory diagrams of an operation of an exhaust unit according to the embodiment of the switchboard cooling device according to the present invention. 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, 9 ... Temperature relay 10 ... Suction fan 11 ... Movable plate
───────────────────────────────────────────────────── 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他方の
冷却ファンに切替て運転するよう構成し、且つ吸い込み
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可動板を設け
たことを特徴とする配電盤の冷却装置。(57) [Claims 1] In a cooling device for 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 installing both fans, install a temperature detector on the cooling fins and always operate only one of the fans to operate
Over the cooling fin temperature due to reduced cooling capacity of the fan
Rise is detected by a temperature detector, and the output of this
It is configured to operate by switching to the cooling fan and suction
At the place where the fan is installed, an exhaust path through this cooling fan,
An exhaust path that leads directly to the outside of the panel is provided, and exhaust that directly leads to the outside of the panel
The road is opened by the wind pressure generated by the operation of the push-in fan,
A movable plate that closes with negative pressure during the operation of the entrapped fan is provided.
A cooling device for a switchboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00682295A JP3498400B2 (en) | 1995-01-20 | 1995-01-20 | Switchboard cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00682295A JP3498400B2 (en) | 1995-01-20 | 1995-01-20 | Switchboard cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08205330A JPH08205330A (en) | 1996-08-09 |
| JP3498400B2 true JP3498400B2 (en) | 2004-02-16 |
Family
ID=11648919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00682295A Expired - Fee Related JP3498400B2 (en) | 1995-01-20 | 1995-01-20 | Switchboard cooling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3498400B2 (en) |
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-
1995
- 1995-01-20 JP JP00682295A patent/JP3498400B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923283A (en) * | 2018-07-03 | 2018-11-30 | 芜湖瑞芬莱网络科技有限公司 | A kind of computer control cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08205330A (en) | 1996-08-09 |
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