JP5545929B2 - Power supply - Google Patents

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JP5545929B2
JP5545929B2 JP2009079075A JP2009079075A JP5545929B2 JP 5545929 B2 JP5545929 B2 JP 5545929B2 JP 2009079075 A JP2009079075 A JP 2009079075A JP 2009079075 A JP2009079075 A JP 2009079075A JP 5545929 B2 JP5545929 B2 JP 5545929B2
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fan
power supply
housing
supply device
dust
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JP2010232467A (en
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昭継 鈴木
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NEC Personal Computers Ltd
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Description

本発明は、外部から供給される電流を、対象となる機器に適した電流に変換する電源装置に関し、特に、内部の温度上昇を防止するためにファンを備えた電源装置に関する。   The present invention relates to a power supply device that converts a current supplied from the outside into a current suitable for a target device, and more particularly to a power supply device that includes a fan to prevent an internal temperature increase.

筐体内部に電気部品を備えた電源装置を動作させると、電流を変換するときに熱損失が発生するため、筐体内部の温度が上昇する。筐体内部の温度上昇は、電気部品の故障や動作不良の原因になるなどの現象の原因となる。かかる現象を回避するために、デスクトップ型パーソナルコンピュータでは、装置筐体にファンを備え、筐体内部に空気を吸入または排出することで、筐体内部の電気部品の温度上昇を防止するよう電源装置が一般的に採用されている。   When a power supply device including an electrical component is operated inside the housing, heat loss occurs when current is converted, so that the temperature inside the housing rises. The temperature rise inside the housing causes a phenomenon such as failure of an electrical component or malfunction. In order to avoid such a phenomenon, a desktop personal computer is provided with a fan in the device casing, and air is sucked into or discharged from the casing to prevent a temperature rise of electrical components inside the casing. Is generally adopted.

ファンを動作させると、電源装置内部に空気の流れが生じ、空気に含まれる埃が装置内部の電気部品上に堆積する。電気部品上の埃が堆積すると、その部品の放熱効率が悪化するため、部品寿命が短くなる場合がある。部品の故障は電源装置の故障や動作不良を招くので、ファンを動作させて電源装置の温度上昇を防止する場合、電気部品に埃を堆積させないようにする必要がある。   When the fan is operated, an air flow is generated inside the power supply device, and dust contained in the air accumulates on electrical components inside the device. When dust on an electrical component accumulates, the heat dissipation efficiency of the component deteriorates, and the component life may be shortened. The failure of the component causes the failure or malfunction of the power supply device. Therefore, when operating the fan to prevent the temperature rise of the power supply device, it is necessary to prevent dust from accumulating on the electrical component.

特許文献1には、電源がオンとなった直後にファンを逆回転させてエアフィルタに付着したゴミを吹き飛ばす強制冷却装置が記載されている。   Patent Document 1 describes a forced cooling device that blows away dust adhering to an air filter by rotating a fan in a reverse direction immediately after the power is turned on.

実開昭61−142290号公報Japanese Utility Model Publication No. 61-142290

特許文献1に記載の強制冷却装置は、エアフィルタに付着したゴミを対象としているため、一定期間ファンを逆回転させることで容易に吹き飛ばすことができる。   Since the forced cooling device described in Patent Document 1 targets dust attached to the air filter, it can be easily blown away by rotating the fan backward for a certain period.

しかし、筐体内部に基板を有し、基板上に配置された電気部品を有するような電源装置では、筐体内部の空気の流れが複雑である。具体的に、図面を参照して説明する。図3は、従来技術の強制冷却装置を適用した電源装置の構造を示す図であり、(a)は外観図、(b)ないし(d)はB−B断面図である。   However, in a power supply device that has a substrate inside the housing and has electrical components arranged on the substrate, the air flow inside the housing is complicated. Specifically, this will be described with reference to the drawings. 3A and 3B are diagrams showing the structure of a power supply device to which a conventional forced cooling device is applied, wherein FIG. 3A is an external view, and FIGS. 3B to 3D are cross-sectional views taken along line BB.

電源装置は筐体11にファン12を有しており、筐体11の内部に基板13が取り付けられている。基板13上には電気部品14が配置されている。(b)は、動作する前の電源装置の筐体内部の状態を示しており、電気部品14に埃15が付着している。(c)は、電源がオンになった直後の電源装置の筐体内部の状態を示しており、ファン12が逆回転して筐体内部から空気を排出している。図中の矢印で示すように、ファン12の配置されていない筐体11の側面から空気が流入しているが、電気部品14の影になった埃15には空気の流れが当たっていないため、埃15を浮き上がらせることができない。(d)は、ファン12が正回転した状態の電源装置の筐体内部の状態を示しており、ファン12の回転によって図中の矢印で示すように筐体内部に空気を吸入している。しかし、ファン12が逆回転しているときに埃15が浮き上がっていないので、埃15を除去することができない。   The power supply apparatus has a fan 12 in a housing 11, and a substrate 13 is attached inside the housing 11. An electrical component 14 is disposed on the substrate 13. (B) shows the state inside the housing of the power supply device before operation, and dust 15 is attached to the electrical component 14. (C) shows the state inside the casing of the power supply apparatus immediately after the power is turned on, and the fan 12 rotates backward to discharge air from the inside of the casing. As indicated by the arrows in the figure, air flows in from the side surface of the housing 11 where the fan 12 is not disposed, but the air flow does not strike the dust 15 that is the shadow of the electrical component 14. The dust 15 cannot be lifted. (D) shows a state inside the housing of the power supply device in a state where the fan 12 is normally rotated, and air is sucked into the housing as indicated by an arrow in the drawing by the rotation of the fan 12. However, since the dust 15 is not lifted when the fan 12 is rotating in the reverse direction, the dust 15 cannot be removed.

以上のように、特許文献1に記載の強制冷却装置を電源装置に適用しても、単にファンを逆回転しただけでは埃を吹き飛ばすことができない。また、一旦吹き飛ばしてもファンが正回転したときの空気の流れによって再び電気部品に付着してしまうことになるため、適切に埃を除去することができない。   As described above, even if the forced cooling device described in Patent Document 1 is applied to a power supply device, dust cannot be blown off simply by rotating the fan in the reverse direction. Moreover, even if it blows off once, it will adhere to an electrical component again by the flow of air when a fan rotates forward, and therefore dust cannot be removed properly.

そこで、本発明は、筐体内部に配置される電気部品上に堆積する埃を適切に除去可能な電源装置を提供することを目的とする。   SUMMARY OF THE INVENTION An object of the present invention is to provide a power supply device that can appropriately remove dust accumulated on electrical components arranged inside a casing.

本発明の電源装置は、筐体と、筐体の内部に取り付けられた、電気部品を配置された基板と、基板に対向する方向に送風するように筐体に取り付けられた第1のファンと、第1のファンの送風方向と略90度の角度で交わる方向に送風するように筐体に取り付けられた第2のファンとを有し、第1のファンが動作した後に第2のファンが動作して筐体内部の埃を除去することを特徴とする。 A power supply device according to the present invention includes a housing, a substrate mounted inside the housing, on which an electrical component is disposed, and a first fan mounted on the housing so as to blow air in a direction facing the substrate. And a second fan attached to the housing so as to blow in a direction intersecting with the blowing direction of the first fan at an angle of approximately 90 degrees, and the second fan is operated after the first fan is operated. Operates to remove dust inside the housing.

本発明によれば、筐体内部に配置される電気部品上に堆積する埃を適切に除去可能な電源装置を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the power supply device which can remove appropriately the dust deposited on the electrical component arrange | positioned inside a housing | casing can be provided.

本実施形態の電源装置の構造を示す図である。It is a figure which shows the structure of the power supply device of this embodiment. 本実施形態の電源装置が埃を除去するときのファン制御フローチャートである。It is a fan control flowchart when the power supply device of this embodiment removes dust. 従来技術の強制冷却装置を適用した電源装置の構造を示す図である。It is a figure which shows the structure of the power supply device to which the forced cooling device of a prior art is applied.

以下、図面を参照して本発明を実施するための形態について詳細に説明する。本実施形態は、デスクトップ型パーソナルコンピュータ等に内蔵され、家庭用100V電源の電流を変換して供給する電源装置である。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. This embodiment is a power supply device that is built in a desktop personal computer or the like and converts and supplies the current of a household 100V power supply.

図1は、本実施形態の電源装置の構造を示す図である。(a)は外観図、(b)ないし(d)はA−A断面図である。電源装置は筐体1に第1ファン2と第2ファン3とを有しており、筐体1の内部に基板4が取り付けられている。第1ファン2は、基板4に対向する面に取り付けられ、第1ファン2と第2ファン3との送風方向は略直交している。基板4上には電気部品5が配置されている。(b)は、動作する前の電源装置の筐体1の内部状態を示しており、電気部品5に埃6が付着している。   FIG. 1 is a diagram illustrating a structure of a power supply device according to the present embodiment. (A) is an external view, (b) thru | or (d) is AA sectional drawing. The power supply apparatus has a first fan 2 and a second fan 3 in a housing 1, and a substrate 4 is attached inside the housing 1. The 1st fan 2 is attached to the surface facing the board | substrate 4, and the ventilation direction of the 1st fan 2 and the 2nd fan 3 is substantially orthogonal. An electrical component 5 is disposed on the substrate 4. (B) shows the internal state of the casing 1 of the power supply device before operation, and dust 6 is attached to the electrical component 5.

(c)は、電源がオンになった直後の電源装置の筐体1の内部状態を示しており、第1ファン2が筐体1の内部に空気を吸入している。このとき、図中の矢印で示すように電気部品5の配置された基板4に対向する面から空気が流れるため、電気部品5に付着した埃6に満遍なく空気が当たり、埃6を浮き上がらせることができる。   (C) shows the internal state of the casing 1 of the power supply apparatus immediately after the power is turned on, and the first fan 2 sucks air into the casing 1. At this time, air flows from the surface facing the substrate 4 on which the electrical component 5 is arranged as indicated by the arrows in the figure, so that the air uniformly hits the dust 6 adhering to the electrical component 5 and causes the dust 6 to rise. Can do.

(d)は、第1ファン2が停止するとともに第2ファン3が動作している状態の電源装置の筐体1の内部状態を示している。第2ファン3の動作によって図中の矢印で示すような空気の流れが生じ、(c)で浮き上がらせた埃6は空気とともに筐体1の外部に排出されている。本実施形態では、第2ファン3が筐体1の内部に空気を吸入する動作を示しているが、第2ファン3が空気を排出するよう動作させてもよい。   (D) has shown the internal state of the housing | casing 1 of the power supply device of the state which the 1st fan 2 stops and the 2nd fan 3 is operating. The operation of the second fan 3 causes an air flow as indicated by an arrow in the figure, and the dust 6 lifted up in (c) is discharged to the outside of the housing 1 together with the air. In the present embodiment, the operation of the second fan 3 sucking air into the housing 1 is shown, but the second fan 3 may be operated to discharge air.

図2は、本実施形態の電源装置が埃を除去するときのファン制御フローチャートである。図2を参照すると、埃の除去動作の開始を指示された電源装置は、動作指示されてからの時間を計測し、所定時間内であれば第1ファン2を動作させる(ステップS1、S2)。所定時間が経過すると、第1ファン2の動作を終了させ、第2ファン3を動作させる(ステップS3)。この埃の除去動作は、任意のタイミングで実行可能であるが、電源装置が動作を開始する都度行うようにすると、電気部品5が動作して発熱する前に埃が除去できるため、好適である。このような一連の処理は、図1で図示しない制御部で各構成要素を制御するようにして実行させることができる。制御部は、マイクロコントローラなどで構成可能である。   FIG. 2 is a fan control flowchart when the power supply device of this embodiment removes dust. Referring to FIG. 2, the power supply apparatus instructed to start the dust removal operation measures the time after the operation is instructed, and operates the first fan 2 within a predetermined time (steps S1 and S2). . When the predetermined time has elapsed, the operation of the first fan 2 is terminated and the second fan 3 is operated (step S3). This dust removal operation can be performed at an arbitrary timing, but it is preferable to perform the dust removal operation every time the power supply device starts operation because dust can be removed before the electric component 5 operates and generates heat. . Such a series of processes can be executed by controlling each component by a control unit (not shown in FIG. 1). The control unit can be configured by a microcontroller or the like.

以上のように構成することで、外部から供給される電流を、対象となる機器に適した電流に変換する電源装置を、筐体内部に配置される電気部品上に堆積する埃を適切に除去するように構成することができる。   By configuring as described above, the power supply device that converts the current supplied from the outside into the current suitable for the target device is properly removed from the dust that accumulates on the electrical components placed inside the housing. Can be configured to.

1 筐体
2 第1ファン
3 第2ファン
4 基板
5 電気部品
6 埃
DESCRIPTION OF SYMBOLS 1 Housing | casing 2 1st fan 3 2nd fan 4 Board | substrate 5 Electrical component 6 Dust

Claims (4)

筐体と、
前記筐体の内部に取り付けられた、電気部品を配置された基板と、
前記基板に対向する方向に送風するように前記筐体に取り付けられた第1のファンと、
前記第1のファンの送風方向と略90度の角度で交わる方向に送風するように前記筐体に取り付けられた第2のファンとを有し、
前記第1のファンが動作した後に前記第2のファンが動作して前記筐体内部の埃を除去することを特徴とする、電源装置。
A housing,
A board on which electrical components are arranged, attached to the inside of the housing;
A first fan attached to the housing so as to blow in a direction facing the substrate;
A second fan attached to the housing so as to blow in a direction that intersects the blowing direction of the first fan at an angle of approximately 90 degrees ;
The power supply apparatus according to claim 1, wherein the second fan operates to remove dust in the housing after the first fan operates.
動作開始から所定時間経過まで前記第1のファンに送風させ、前記所定時間経過後に前記第1のファンを停止させるとともに、前記第2のファンに送風させることを特徴とする、請求項1に記載の電源装置。   The first fan is blown from the start of operation until a predetermined time elapses, and the first fan is stopped and the second fan is blown after the predetermined time elapses. Power supply. 前記第1のファンが、前記筐体における前記基板に対向する面に配置され、
前記第2のファンが、前記第1のファンの配置された面と略直交する面に配置されていることを特徴とする、請求項1または2に記載の電源装置。
The first fan is disposed on a surface of the housing facing the substrate;
The power supply device according to claim 1, wherein the second fan is disposed on a surface substantially orthogonal to a surface on which the first fan is disposed.
前記第1のファンを、前記筐体の外部から内部へ空気を吸入するように送風させることを特徴とする、請求項1ないし3に記載の電源装置。   4. The power supply device according to claim 1, wherein the first fan blows air so as to suck air from the outside to the inside of the casing. 5.
JP2009079075A 2009-03-27 2009-03-27 Power supply Active JP5545929B2 (en)

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2585021Y2 (en) * 1993-06-30 1998-11-11 三洋電機株式会社 Power supply board cooling structure
JP3318220B2 (en) * 1996-12-02 2002-08-26 株式会社三社電機製作所 Electrical equipment with air cooling
JP4154938B2 (en) * 2002-07-12 2008-09-24 株式会社日立製作所 Information processing device
JP4554503B2 (en) * 2005-12-14 2010-09-29 富士通株式会社 Heat dissipation device and electronic device

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