JP2000279695A - Washing machine - Google Patents
Washing machineInfo
- Publication number
- JP2000279695A JP2000279695A JP11092090A JP9209099A JP2000279695A JP 2000279695 A JP2000279695 A JP 2000279695A JP 11092090 A JP11092090 A JP 11092090A JP 9209099 A JP9209099 A JP 9209099A JP 2000279695 A JP2000279695 A JP 2000279695A
- Authority
- JP
- Japan
- Prior art keywords
- heat sink
- washing machine
- air
- tub
- rotating
- 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.)
- Granted
Links
Landscapes
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、制御部にパワー部
品及びこれの放熱をするヒートシンクを有する洗濯機に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine having a power component in a control section and a heat sink for radiating the power component.
【０００２】[0002]
【従来の技術】従来より、洗濯機においては、衣類の洗
濯、脱水を行うための制御をする制御部に、パワー部品
及びこれの放熱をするヒートシンクを有するものが供さ
れている。この場合、パワー部品は例えばＩＧＢＴであ
り、内部の損失により発熱するものであるから、正常に
動作させるためにはその温度上昇を抑制する必要があ
る。従来は、それを、パワー部品に取付けたヒートシン
クに熱伝達させて、このヒートシンクから周囲空気へ熱
放散することにより行うようになっている。2. Description of the Related Art Conventionally, in a washing machine, a control unit for controlling washing and dehydration of clothes is provided with a power component and a heat sink for radiating heat. In this case, the power component is, for example, an IGBT and generates heat due to internal loss. Therefore, it is necessary to suppress a rise in temperature in order to operate normally. Conventionally, this is achieved by transferring heat to a heat sink attached to a power component and dissipating heat from the heat sink to ambient air.
【０００３】又、洗濯機の場合、制御部は、トップカバ
ーの例えば操作パネル部の内方位置（裏側）に存する凹
部に収納され、この凹部の周壁により囲われて、更にそ
の下方に存する回転槽との間が該凹部の周壁により隔絶
され、防水されるようになっている。従って、前記ヒー
トシンクからの放熱も、凹部内空気の自然対流によって
行われるようになっており、この方式でパワー部品の温
度上昇の抑制が充分にできるように、パワー部品を複数
個に分散し、それらを大形のヒートシンクに取付けるこ
とにより、表面積を大きくとって放熱することが行なわ
れている。In the case of a washing machine, the control unit is housed in a recess in the top cover, for example, at an inner position (back side) of the operation panel unit. A space between the tank and the tank is isolated by a peripheral wall of the concave portion so as to be waterproof. Accordingly, the heat radiation from the heat sink is also performed by natural convection of the air in the concave portion. In this method, the power components are dispersed into a plurality of components so that the temperature rise of the power components can be sufficiently suppressed. By attaching them to a large heat sink, heat is radiated with a large surface area.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、近年、
洗濯機の駆動部は、回転の高速化、高トルク化などによ
り使用電力量が増加する傾向にあり、それに伴い、その
駆動部への給電を制御する制御部のパワー部品の発熱密
度も大きくなっており、それに対して、上述の自然対流
により放熱するものでは、パワー部品の温度上昇の抑制
が充分にできにくくなっている。However, in recent years,
The power consumption of the drive unit of the washing machine tends to increase due to the increase in rotation speed and torque, and the heat generation density of the power component of the control unit that controls power supply to the drive unit also increases. On the other hand, with the above-described device that dissipates heat by natural convection, it is difficult to sufficiently suppress the temperature rise of the power component.
【０００５】又、近年の洗濯機は、洗濯容量を増しなが
も外寸を大きくしないコンパクト化設計が進んでおり、
更に、電子回路の高密度化設計技術の進歩もあって、回
路基板は小形化の方向にあり、この小形化された回路基
板に、上述の複数個に分散したパワー部品、及び大形の
ヒートシンクを搭載するのは、スペース上の点から困難
である。[0005] In recent years, washing machines have been designed to be more compact without increasing the washing capacity but increasing the outer dimensions.
In addition, due to the development of high-density design technology for electronic circuits, circuit boards are becoming smaller, and the above-mentioned plurality of dispersed power components and large heat sinks are mounted on the smaller circuit boards. Is difficult in terms of space.
【０００６】本発明は上述の事情に鑑みてなされたもの
であり、従ってその目的は、パワー部品の温度上昇の抑
制が充分にでき、近年の、パワー部品の発熱密度が大き
くなったもの、並びに大形のヒートシンクが使用できな
いものにも好適する洗濯機を提供するにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and has as its object the purpose of sufficiently suppressing the temperature rise of power components and increasing the heat generation density of power components in recent years. It is an object of the present invention to provide a washing machine which is suitable for a machine in which a large heat sink cannot be used.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明の洗濯機は、衣類の洗濯、脱水を行うための
回転槽と、この回転槽を回転駆動する駆動部と、パワー
部品及びこれの放熱をするヒートシンクを有し、前記駆
動部への給電を制御する制御部と、この制御部を囲って
前記回転槽との間を隔絶した隔絶部材とを具備するもの
において、前記ヒートシンクの近傍に位置する前記隔絶
部材の一部に、他の部分より多くの通気孔を設けたこと
を特徴とする（請求項１の発明）。In order to achieve the above object, a washing machine of the present invention comprises a rotating tub for washing and dewatering clothes, a driving unit for rotating the rotating tub, and a power component. And a heat sink for dissipating the heat, comprising: a control unit for controlling power supply to the drive unit; and an isolation member surrounding the control unit and isolating from the rotary tank. The invention is characterized in that a part of the isolation member located in the vicinity of is provided with more ventilation holes than other parts (the invention of claim 1).
【０００８】このものによれば、回転槽の回転によって
生じる気流を、ヒートシンクの近傍に位置する隔絶部材
の一部に他の部分より多く設けた通気孔から導入してヒ
ートシンクの周辺を流し、その空気流によってヒートシ
ンクの放熱を盛んにすることができる。よって、パワー
部品の温度上昇の抑制が充分にできるようになり、近年
の、パワー部品の発熱密度が大きくなったものにも、
又、大形のヒートシンクが使用できないものにも充分好
適するようになる。According to this structure, the air flow generated by the rotation of the rotary tub is introduced into the part of the isolation member located near the heat sink from the ventilation hole provided more than the other part, and flows around the heat sink. The heat flow of the heat sink can be increased by the air flow. Therefore, the temperature rise of the power component can be sufficiently suppressed, and even in recent years, the heat density of the power component has been increased.
In addition, it is sufficiently suitable for a heat sink in which a large heat sink cannot be used.
【０００９】この場合、ヒートシンクと通気孔は、回転
槽とこれを収容した筐体との間の最も狭隘な部分より回
転槽の回転方向先側に偏倚させて配置すると良い（請求
項２の発明）。このものでは、回転槽の回転によって生
じる気流の速度が充分に高く、その方向がヒートシンク
の周辺に流れる方向となる部分に、ヒートシンクと通気
孔を位置させ得ることになり、それによって、ヒートシ
ンクの周辺に流れる空気の量を多くなし得るから、ヒー
トシンクの、空気との熱交換量が増加し、パワー部品の
温度上昇をより効果的に抑制できるようになる。In this case, it is preferable that the heat sink and the ventilation hole are arranged so as to be deviated from the narrowest portion between the rotary tub and the housing accommodating the rotary tub toward the rotation direction front side of the rotary tub. ). In this device, the heat sink and the ventilation hole can be located in a portion where the speed of the air flow generated by the rotation of the rotating tub is sufficiently high and the direction of the air flow flows around the heat sink. Since the amount of air flowing through the heat sink can be increased, the amount of heat exchange between the heat sink and the air increases, and the rise in temperature of the power components can be more effectively suppressed.
【００１０】又、通気孔には、空気の誘導をする突起を
設けると良い（請求項３の発明）。このものでは、回転
槽の回転によって生じる気流が、突起に誘導されて隔絶
部材の内方（制御部側）に流入しやすくなり、ヒートシ
ンクの周辺を流れる空気の量が増す。この結果、ヒート
シンクの、空気との熱交換量が増加し、パワー部品の温
度上昇をより効果的に抑制できるようになる。[0010] Further, it is preferable that a protrusion for guiding air is provided in the vent hole (the third aspect of the present invention). In this case, the airflow generated by the rotation of the rotary tank is guided by the protrusions and easily flows into the inside of the isolation member (on the control unit side), and the amount of air flowing around the heat sink increases. As a result, the amount of heat exchange between the heat sink and the air increases, and the temperature rise of the power component can be more effectively suppressed.
【００１１】更に、通気孔は空気流入側と空気流出側と
に分かれ、その両方の通気孔にそれぞれ空気の誘導をす
る突起を設けると良い（請求項４の発明）。このもので
は、回転槽の回転によって生じる気流が、空気流入側の
通気孔からは突起に直接誘導されて隔絶部材の内方に流
入しやすくなり、空気流出側の通気孔からは突起により
流入が阻止され、その先側の通気孔部分で負圧となっ
て、流出が誘導される。この結果、ヒートシンクの周辺
を流れる空気の量が更に増し、ヒートシンクの、空気と
の熱交換量も更に増加して、パワー部品の温度上昇を一
段と効果的に抑制できるようになる。Further, it is preferable that the ventilation holes are divided into an air inflow side and an air outflow side, and both of the ventilation holes are provided with projections for guiding air (invention 4). In this device, the airflow generated by the rotation of the rotary tank is directly guided to the projection from the air inlet side vent hole and easily flows into the inside of the isolation member. The flow is blocked, and a negative pressure is generated at the vent hole on the front side, so that the outflow is induced. As a result, the amount of air flowing around the heat sink further increases, and the amount of heat exchange between the heat sink and the air further increases, so that the temperature rise of the power component can be further effectively suppressed.
【００１２】加えて、ヒートシンクは、周辺の空気の流
れに沿う方向に延びるフィンを有すると良い（請求項５
の発明）。このものでは、ヒートシンクの表面積をフィ
ンによって増やすことができると共に、このフィンの部
分を抵抗少なく空気を流すことができるようになり、そ
の結果、ヒートシンクの、空気との熱交換量が増加し
て、パワー部品の温度上昇をより効果的に抑制できるよ
うになる。[0012] In addition, the heat sink may have fins extending in a direction along the flow of the surrounding air.
Invention). In this device, the surface area of the heat sink can be increased by the fins, and air can flow through the fins with less resistance. As a result, the heat exchange amount of the heat sink with air increases. The temperature rise of the power component can be more effectively suppressed.
【００１３】この場合、通気孔は、ヒートシンクのフィ
ンの延び方向に並べて設けると良い（請求項６の発
明）。このものでは、空気がヒートシンクのフィンに沿
って一段と流れやすくなり、その結果、ヒートシンク
の、空気との熱交換量が更に増加して、パワー部品の温
度上昇を一段と効果的に抑制できるようになる。In this case, it is preferable that the ventilation holes are provided side by side in the extending direction of the fins of the heat sink. In this device, air flows more easily along the fins of the heat sink, and as a result, the amount of heat exchange of the heat sink with the air further increases, and the temperature rise of the power component can be further effectively suppressed. .
【００１４】一方、本発明の洗濯機は、衣類の洗濯、脱
水を行うための回転槽と、この回転槽を回転駆動する駆
動部と、パワー部品及びこれの放熱をするヒートシンク
を有し、前記駆動部への給電を制御する制御部と、この
制御部を囲って前記回転槽との間を隔絶した隔絶部材と
を具備するものにおいて、その隔絶部材が回転槽の回転
方向とは反対の方向に臨む部分を有し、その部分に通気
孔を設け、それより回転槽の回転方向先側に偏倚させて
ヒートシンクを配置したことを特徴とする（請求項７の
発明）。On the other hand, the washing machine of the present invention has a rotating tub for washing and dewatering clothes, a driving unit for rotating the rotating tub, a power component and a heat sink for radiating heat. A control unit for controlling the power supply to the driving unit, and a separating member surrounding the control unit and separating the rotary tank from the rotary tank, wherein the separating member is in a direction opposite to the rotation direction of the rotary tank. , A vent hole is provided in the portion, and a heat sink is disposed so as to be deflected toward the rotation direction front side of the rotary tank therefrom (the invention of claim 7).
【００１５】このものによれば、回転槽の回転によって
生じる気流が、隔絶部材の内方に流入しやすくなり、ヒ
ートシンクの周辺を流れる空気の量が増す。この結果、
ヒートシンクの、空気との熱交換量が増加し、パワー部
品の温度上昇をより効果的に抑制できるようになる。According to this structure, the airflow generated by the rotation of the rotary tub becomes easier to flow into the isolation member, and the amount of air flowing around the heat sink increases. As a result,
The amount of heat exchange between the heat sink and the air increases, and the temperature rise of the power component can be more effectively suppressed.
【００１６】上記遮蔽部材と回転槽との間にはカバーが
存し、このカバーにも通気孔を設けると良い（請求項８
の発明）。このものでは、制御部への水かかりをカバー
により極力防止しながら、回転槽の回転によって生じる
気流を、カバーの通気孔から隔絶部材の通気孔を通じて
隔絶部材の内方に流入させて、パワー部品の温度上昇を
効果的に抑制できるようになる。A cover is provided between the shielding member and the rotary tank, and the cover may be provided with a vent hole.
Invention). In this device, while preventing water from splashing on the control unit as much as possible, the air flow generated by the rotation of the rotating tank is caused to flow from the ventilation hole of the cover into the inside of the isolation member through the ventilation hole of the isolation member, and the power component Temperature rise can be effectively suppressed.
【００１７】この場合、遮蔽部材の通気孔は、カバーの
通気孔より回転槽の回転方向先側に位置すると良い（請
求項９の発明）。このものでは、回転槽の回転により誘
起されてカバーの通気孔を通った空気が隔絶部材の内方
に流入しやすくなって、パワー部品の温度上昇を効果的
に抑制できるようになる。In this case, it is preferable that the ventilation hole of the shielding member is located closer to the rotation direction of the rotating tub than the ventilation hole of the cover. In this case, the air induced by the rotation of the rotary tub and passing through the ventilation hole of the cover easily flows into the inside of the isolation member, and the temperature rise of the power component can be effectively suppressed.
【００１８】又、通気孔の、少なくとも回転槽の回転方
向とは反対側の部分に突起を設けると良い（請求項１０
の発明）。このものでは、回転槽から飛散する水沫が、
回転槽の回転によって誘起される気流に乗って隔絶部材
の内方に入り込もうとしたとき、それを突起により阻止
して、より確実な防水ができる。又、この場合、隔絶部
材の外方から内方への空気の流入は、隔絶部材内方の空
気の自然対流等に伴って通気孔から自然になされる。Further, it is preferable that a projection is provided at least in a portion of the ventilation hole opposite to the rotation direction of the rotary tank.
Invention). In this thing, the water splashing from the rotating tank,
When an attempt is made to enter the inside of the isolation member by riding on the airflow induced by the rotation of the rotating tub, this is prevented by the projection, so that more reliable waterproofing can be achieved. In this case, the inflow of air from the outside to the inside of the isolation member is naturally made from the ventilation hole along with natural convection of the air inside the isolation member.
【００１９】更に、遮蔽部材は底部に傾斜部を有し、こ
の傾斜部に、通気孔の突起を傾斜の上側ほど大きく突出
するように設けると良い（請求項１１の発明）。このも
のでは、隔絶部材が占める筐体内のスペースを増さず
に、通気孔の開口面積を極力大きく確保できるから、隔
絶部材の内方への水沫の入り込みを防止できる構造で、
隔絶部材の外方から内方への空気の自然流入量も大きく
確保でき、パワー部品の温度上昇をより効果的に抑制で
きるようになる。Further, it is preferable that the shielding member has an inclined portion on the bottom portion, and the projection of the ventilation hole is provided on the inclined portion so as to protrude more toward the upper side of the inclination (the invention of claim 11). With this structure, since the opening area of the ventilation hole can be secured as much as possible without increasing the space in the housing occupied by the isolation member, a structure capable of preventing water from entering the interior of the isolation member,
A large natural inflow of air from the outside to the inside of the isolation member can be ensured, and the temperature rise of the power component can be suppressed more effectively.
【００２０】そして、対象とする回転槽の回転方向は、
脱水運転時の回転方向とすると良い（請求項１２の発
明）。このものでは、パワー部品及びヒートシンクが最
も高温となる最終脱水運転時に隔絶部材の外方から内方
への空気の流入ができて、パワー部品の温度上昇の抑制
が効果的にできる。又は、回転槽からの水沫の飛散の多
い、該回転槽の高速回転時における隔絶部材内方への水
沫の入り込みを防止できて、制御部の電気的信頼性がよ
り高く得られるようになる。The direction of rotation of the rotary tub is
It is preferable to set the rotation direction during the dehydration operation (the invention of claim 12). In this case, air can flow from the outside to the inside of the isolation member during the final dehydration operation in which the power component and the heat sink have the highest temperature, and the temperature rise of the power component can be effectively suppressed. Alternatively, it is possible to prevent water droplets from entering into the inside of the isolation member when the rotary tank rotates at a high speed, in which the water droplets are scattered from the rotary tank, and the electrical reliability of the control unit can be further improved.
【００２１】[0021]
【発明の実施の形態】以下、本発明の第１実施例につ
き、図１ないし図４を参照して説明する。まず図３に
は、洗濯機全体の構成を示しており、外箱１と、これの
上端部に装着したトップカバー２とで、外殻としてのほ
ゞ矩形ボックス状の筐体３を構成している。この筐体３
の外箱１内には、有底円筒状の外槽４を収容して、これ
を、一部のみ図示した弾性支持機構５により弾性支持し
ており、外槽４内には、同じく有底円筒状の回転槽６を
回転可能に配設している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, FIG. 3 shows a configuration of the entire washing machine. An outer box 1 and a top cover 2 attached to an upper end of the outer box 1 constitute a substantially rectangular box-shaped housing 3 as an outer shell. ing. This case 3
A cylindrical outer tank 4 having a bottom is accommodated in the outer box 1 and elastically supported by an elastic support mechanism 5 only partially shown in the figure. A cylindrical rotating tank 6 is rotatably provided.
【００２２】外槽４の底部の外下方には、中央部に駆動
部７を設けており、この駆動部７は、この場合、モータ
８単体から成っている。このモータ８は、例えばアウタ
ーロータ形であり、更には、三相のブラシレスモータで
あって、そのロータ９の軸１０を、外槽４の底部中央に
設けた軸受シール部１１を通して外槽４内に突出させ、
その突出端部に回転槽６を取付けている。A drive unit 7 is provided in the center below the bottom of the outer tank 4 at the center, and in this case, the drive unit 7 is composed of a motor 8 alone. The motor 8 is, for example, an outer rotor type, and is a three-phase brushless motor. The shaft 10 of the rotor 9 is connected to a bearing seal portion 11 provided at the center of the bottom of the outer tub 4. Project
The rotating tank 6 is attached to the protruding end.
【００２３】これにより、回転槽６はモータ８により直
に回転駆動されるようになっており、中でも、洗濯（洗
い、すすぎ）運転時には、内部に水を溜めた状態で図１
に示す矢印Ａ方向及びＢ方向の正逆両方向に回転駆動さ
れ、それによって衣類の洗い、すすぎを行なうようにな
っている。又、脱水運転時には、回転槽６は正方向（矢
印Ａ方向）にのみ高速回転され、それによって衣類が含
んだ水分を上端部の脱水孔１２から振り切り排出する脱
水を行なうようになっている。As a result, the rotary tub 6 is directly driven to rotate by the motor 8, and in particular, during the washing (washing, rinsing) operation, the water is stored inside in FIG.
Are rotated in the forward and reverse directions indicated by arrows A and B, thereby washing and rinsing the clothes. In addition, during the spin-drying operation, the rotary tub 6 is rotated at a high speed only in the forward direction (the direction of the arrow A), thereby performing spin-drying in which the water contained in the clothes is shaken out from the spin-drying hole 12 at the upper end.
【００２４】このほか、外槽４の底部外下方には、回転
槽６内から外槽４内底部の排水路１３を通じて排水する
ための排水弁１４や排水ホース１５等をも配設してい
る。又、回転槽６の上端部の内周には、例えば液体封入
形の回転バランサ１６を取付けている。In addition, a drain valve 14 and a drain hose 15 for draining water from the inside of the rotary tank 6 through the drain 13 at the bottom of the outer tank 4 are also provided below the bottom of the outer tank 4. . On the inner periphery of the upper end of the rotary tank 6, for example, a liquid-sealed rotary balancer 16 is attached.
【００２５】そして、前記トップカバー２には、中央部
に洗濯物出入口１７を形成しており、それを例えば２つ
折りタイプの蓋１８により開閉するようにしている。
又、このトップカバー２は、上面部の後部に後パネル１
９を有し、前部に前パネル２０を有するもので、このう
ち、前パネル２０は洗濯機の運転に関する種々の操作を
行うための操作キーなど操作部を有するものとなってい
る。The top cover 2 is provided with a laundry entrance 17 at the center thereof, which is opened and closed by, for example, a two-fold type lid 18.
The top cover 2 has a rear panel 1 at the rear of the upper surface.
9 and a front panel 20 at the front. The front panel 20 has operation units such as operation keys for performing various operations related to the operation of the washing machine.
【００２６】ここで、図１は上記トップカバー２を、蓋
１８及び前パネル２０を取外した状態で示している。こ
の図１から明らかなように、トップカバー２の前部には
凹部２１を形成しており、前パネル２０はこの凹部２１
を上方から覆うように装着している。従って、凹部２１
内は前パネル２０部の内方部であり、ここに電子ユニッ
ト２２を収納している。FIG. 1 shows the top cover 2 with the lid 18 and the front panel 20 removed. As is apparent from FIG. 1, a recess 21 is formed in the front portion of the top cover 2, and the front panel 20 is
Is mounted to cover from above. Therefore, the recess 21
The inside is the inner part of the front panel 20 in which the electronic unit 22 is housed.
【００２７】電子ユニット２２は、この場合、洗濯機の
運転制御、中でも前記駆動部７（モータ８）への給電を
制御する制御部として機能するもので、図２にも示すよ
うに、例えばプリント基板から成る回路基板２３を有し
ており。この回路基板２３に、パワー部品２４を含む電
子部品（パワー部品２４以外は図示せず）を実装してい
る。パワー部品２４は、前記駆動部７への給電制御（Ｐ
ＷＭ制御）をするインバータ回路を構成するところの、
例えば６個のＩＧＢＴなどパワー素子を１つにパッケー
ジングして成るもので、いわゆるパワーモジュールであ
る。In this case, the electronic unit 22 functions as a control unit for controlling the operation of the washing machine, in particular, the power supply to the driving unit 7 (motor 8). As shown in FIG. It has a circuit board 23 composed of a board. Electronic components including power components 24 (other components than power components 24 are not shown) are mounted on the circuit board 23. The power component 24 controls power supply to the drive unit 7 (P
Which constitutes an inverter circuit that performs WM control)
For example, it is a so-called power module formed by packaging power elements such as six IGBTs into one.
【００２８】パワー部品２４にはヒートシンク２５を取
付けており、このヒートシンク２５は、アルミニウムな
ど伝熱性に優れた材料により、縦、横ともにパワー部品
２４より大きな矩形ブロック状に形成したものである。A heat sink 25 is attached to the power component 24. The heat sink 25 is formed of a material having excellent heat conductivity, such as aluminum, into a rectangular block larger than the power component 24 both vertically and horizontally.
【００２９】さて、このような電子ユニット２２を収納
した前記トップカバー２の凹部２１の周壁２６は、もっ
ぱら防水のために、電子ユニット２２を囲って前記回転
槽６との間を隔絶する隔絶部材として機能するものであ
り、この隔絶部材たる凹部２１の周壁２６には、底部に
通気孔２７を形成しており、中でも、上記ヒートシンク
１５の近傍に位置する部分には、該通気孔２７を他の部
分より多く形成している。The peripheral wall 26 of the recess 21 of the top cover 2 in which the electronic unit 22 is housed is provided with an isolating member for surrounding the electronic unit 22 and isolating the electronic unit 22 from the rotary tank 6. A ventilation hole 27 is formed at the bottom of the peripheral wall 26 of the concave portion 21 serving as an isolation member. In particular, the ventilation hole 27 is provided in a portion located near the heat sink 15. Is formed more than the part.
【００３０】次に、上記構成のものの作用を述べる。洗
濯機の運転が開始されれば、電子ユニット２２（制御
部）は、前述の洗い、すすぎ、及び脱水の運転を行なう
べく、駆動部７への給電を制御するもので、このように
制御される結果、ヒートシンク２５の温度は、パワー部
品２４の発熱に応じて、普通、図４に示すように変化す
る。Next, the operation of the above configuration will be described. When the operation of the washing machine is started, the electronic unit 22 (control unit) controls the power supply to the drive unit 7 in order to perform the above-described washing, rinsing, and dehydrating operations. As a result, the temperature of the heat sink 25 usually changes as shown in FIG.
【００３１】ここで、ヒートシンク２５の温度が上昇し
ているのは、洗い、すすぎ、及び脱水の運転を実行して
いるときであり、回転槽６を回転駆動しているときであ
る。なお、ヒートシンク２５の温度が下降しているの
は、排水を実行しているときであり、回転槽６を回転駆
動していないときである。ヒートシンク２５の温度が最
も上昇するのは、パワー部品２４が最高温度となるとき
であって、最終の脱水運転時であり、このとき、回転槽
６は前述のごとく高速回転している。なお、この温度変
化の各温度値は、パワー部品２４及びヒートシンク２５
を冷却せず放置したときのものである。Here, the temperature of the heat sink 25 rises when the washing, rinsing, and dehydrating operations are being performed, and when the rotary tub 6 is being driven to rotate. The temperature of the heat sink 25 decreases when drainage is being performed, and when the rotary tub 6 is not rotationally driven. The temperature of the heat sink 25 rises most when the power component 24 reaches the highest temperature, and at the time of the final dehydration operation. At this time, the rotating tub 6 is rotating at a high speed as described above. Note that each temperature value of this temperature change corresponds to the power component 24 and the heat sink 25.
Is left without cooling.
【００３２】これに対し、回転槽６が回転すれば、その
周辺の空気にその回転に応じた方向の流れが生じる。こ
の空気の流れにより、上記構成のものでは、トップカバ
ー２の凹部２１の周壁２６（隔絶部材）の底部に形成し
た通気孔２７、中でも、ヒートシンク１５の近傍に位置
する部分において他の部分より多く形成した通気孔２７
から、凹部２１内に多くの空気が入り、それが又、回転
槽６の回転方向先に存する他の通気孔２７から、あるい
は他の隙間（例えば前パネル２０の装着部分の隙間や、
前パネル２０に設けられる押ボタン式電源スイッチ周辺
の隙間など）から抜け出る。こうして、ヒートシンク２
５の周辺には、凹部２１外の空気による気流ができる。On the other hand, when the rotary tank 6 rotates, a flow of air in the direction corresponding to the rotation is generated in the air around the rotary tank 6. Due to the flow of air, in the above-described configuration, in the vent hole 27 formed in the bottom of the peripheral wall 26 (isolation member) of the concave portion 21 of the top cover 2, a portion located near the heat sink 15 is more than other portions. Vent holes 27 formed
Therefore, a lot of air enters into the concave portion 21, and it also flows from another vent hole 27 existing ahead of the rotating tank 6 in the rotation direction, or from another gap (for example, a gap at a mounting portion of the front panel 20,
(A clearance around the push-button type power switch provided on the front panel 20). Thus, the heat sink 2
In the vicinity of 5, there is an airflow due to the air outside the recess 21.
【００３３】従来は、ほゞ密閉された空間内における温
度差のみしか気流の起因力がなく、ヒートシンク周辺に
小さな自然対流しか生じていなかった。それに対して、
上記構成のものでは、ヒートシンク２５の周辺に凹部２
１外の空気による強制的な空気流を作ることができるの
である。しかも、回転槽６の回転に伴って生じる気流の
空気温度は、洗濯に使用している水温や、洗濯機が置か
れている場所の雰囲気温度の影響を大きく受けるもの
の、従来のほゞ密閉された空間内の空気温度よりは低い
温度となっており、ヒートシンク２５の冷却に有利な条
件を有している。Conventionally, only a temperature difference in a substantially closed space has an airflow-causing force, and only a small natural convection occurs around a heat sink. On the other hand,
In the above configuration, the concave portion 2 is provided around the heat sink 25.
A forced air flow by outside air can be created. In addition, the air temperature of the airflow generated by the rotation of the rotary tub 6 is greatly affected by the temperature of the water used for washing and the ambient temperature of the place where the washing machine is placed. The temperature of the heat sink 25 is lower than the temperature of the air in the space, which is advantageous for cooling the heat sink 25.
【００３４】かくして、上記構成のものの場合、従来よ
りも温度の低い空気をヒートシンク２５の周辺に流し得
るものであり、その放熱量を大きくすることができる。
よって、パワー部品２４の温度上昇の抑制が充分にで
き、近年の、パワー部品２４の発熱密度が大きくなった
ものにも充分好適する。又、大形のヒートシンクが使用
できないものにも充分好適する。Thus, in the case of the above configuration, air having a lower temperature than the conventional one can flow around the heat sink 25, and the amount of heat radiation can be increased.
Therefore, it is possible to sufficiently suppress the temperature rise of the power component 24, and it is sufficiently suitable for the power component 24 in which the heat generation density has been increased in recent years. Further, it is well suited to those in which a large heat sink cannot be used.
【００３５】以上に対して、図５ないし図１７は本発明
の第２ないし第１１実施例を示すもので、それぞれ、第
１実施例と同一又は同様の部分には同一の符号を付して
説明を省略し、異なる部分についてのみ述べる。 ［第２実施例］図５に示す第２実施例においては、ヒー
トシンク２５と通気孔２７を、回転槽６と筐体３との間
の最も狭隘な部分より回転槽６の回転方向先側に偏倚さ
せて配置している。5 to 17 show the second to eleventh embodiments of the present invention. The same or similar parts as those in the first embodiment are denoted by the same reference numerals. The description is omitted, and only different parts are described. [Second Embodiment] In the second embodiment shown in FIG. 5, the heat sink 25 and the ventilation hole 27 are arranged at a position closer to the rotation direction of the rotary tub 6 than the narrowest portion between the rotary tub 6 and the housing 3. It is displaced.
【００３６】詳細には、前述のように、回転槽６が円筒
状であり、筐体３がほゞ矩形ボックス状であることによ
り、回転槽６と筐体３との間は、前面側、後面側、及び
左右の両側面側のそれぞれ中央部で最も狭隘となってお
り、両端部すなわち各隅部で広くなっている。又、この
場合、回路基板３１は前述の回路基板２３より横方向に
小さいものであり、これの図中右側、すなわち、回転槽
６の正の回転方向（矢印Ａ方向）先側に、パワー部品２
４とヒートシンク２５とを偏倚させて配置している。そ
して、このように構成した電子ユニット３２（制御部）
を、上述の前面側で回転槽６と筐体３との間の最も狭隘
な中央部より図中右側（回転槽６の正の回転方向先側）
に偏倚させて配置しており、通気孔２７も、同じく図中
右側に偏倚させて配置している。More specifically, as described above, since the rotary tub 6 is cylindrical and the housing 3 is substantially rectangular box-shaped, the space between the rotary tub 6 and the housing 3 is on the front side. It is narrowest at the center on the rear side and on the right and left sides, and wide at both ends, that is, at each corner. In this case, the circuit board 31 is smaller than the above-described circuit board 23 in the lateral direction, and the power component is located on the right side in the drawing, that is, on the front side in the positive rotation direction (direction of arrow A) of the rotary tank 6. 2
4 and the heat sink 25 are displaced. Then, the electronic unit 32 (control unit) configured as described above.
To the right side in the figure from the narrowest central portion between the rotary tub 6 and the housing 3 on the front side (the front side in the positive rotation direction of the rotary tub 6).
, And the vent hole 27 is also similarly biased to the right in the figure.
【００３７】この場合、回転槽６が上述の正方向に回転
したときを考えてみると、その回転に伴って生じる気流
も同方向に誘起される。この気流は回転槽６の回転の接
線方向に近い角度で誘起され、その速度は、回転槽６と
筐体３との間の距離の影響を受け、その距離が小さいと
ころ、すなわち狭隘な部分で高くなる傾向にある。In this case, considering the case where the rotary tub 6 rotates in the above-described positive direction, the airflow generated by the rotation is also induced in the same direction. This air flow is induced at an angle close to the tangential direction of the rotation of the rotary tub 6, and its speed is affected by the distance between the rotary tub 6 and the housing 3. It tends to be higher.
【００３８】これに対して、本構成のものでは、回転槽
６の正方向の回転によって誘起された気流の速度が充分
に高く、その方向がヒートシンク２５の周辺に流れる方
向となる部分に、ヒートシンク２５と通気孔２７を位置
させ得るものであり、これによって、ヒートシンク２５
の周辺に流れる空気の量を多くすることができる。この
結果、ヒートシンク２５の、空気との熱交換量が増加
し、パワー部品２４の温度上昇をより効果的に抑制する
ことができる。On the other hand, in the case of this configuration, the speed of the air flow induced by the rotation of the rotary tank 6 in the forward direction is sufficiently high and the direction in which the direction of the air flow 25 and the ventilation hole 27 can be positioned, thereby the heat sink 25
The amount of air flowing around the area can be increased. As a result, the heat exchange amount of the heat sink 25 with the air increases, and the temperature rise of the power component 24 can be more effectively suppressed.
【００３９】加えて、この場合、ヒートシンク２５と通
気孔２７を先側に偏倚させた回転槽６の正の回転方向
は、脱水運転時の回転方向であり、このように、ヒート
シンク２５と通気孔２７の配置の対象とする回転槽６の
回転方向を、脱水運転時の回転方向とすることによっ
て、前述の、最も高温となる最終脱水運転時のパワー部
品２４の温度上昇の抑制が効果的にできる。In addition, in this case, the positive rotation direction of the rotary tub 6 in which the heat sink 25 and the ventilation hole 27 are biased to the front side is the rotation direction at the time of the dehydration operation. By setting the rotation direction of the rotary tub 6 to be the object of the arrangement of 27 to the rotation direction at the time of the dehydration operation, it is possible to effectively suppress the temperature rise of the power component 24 at the time of the final dehydration operation at the highest temperature. it can.
【００４０】たゞし、最終脱水運転時のことを考慮しな
ければ、ヒートシンク２５と通気孔２７は、回転槽６の
逆の回転方向（矢印Ａとは反対の方向）先側に偏倚させ
て配置するようにしても良いものであり、その回転槽６
の逆方向の回転によって上述同様の作用効果を得ること
ができる。又、この場合、回路基板３１とパワー部品２
４は回転槽６の回転方向先側には偏倚させず、ヒートシ
ンク２５と通気孔２７のみを回転槽６の回転方向先側に
偏倚させるようにしても良い。However, if the final dehydration operation is not taken into consideration, the heat sink 25 and the vent hole 27 are biased in the opposite rotation direction (direction opposite to the arrow A) of the rotary tub 6 to the front side. The rotating tank 6 may be arranged.
The same operation and effect as described above can be obtained by the rotation in the reverse direction. In this case, the circuit board 31 and the power component 2
Reference numeral 4 may be such that only the heat sink 25 and the ventilation hole 27 are biased toward the rotation direction front side of the rotary tub 6 without being biased toward the rotation direction front side of the rotary tub 6.
【００４１】［第３実施例］図６及び図７に示す第３実
施例においては、通気孔２７に、空気の誘導をする突起
４１を設けている。詳細には、通気孔２７の、それぞれ
回転槽６の正の回転方向（矢印Ａ方向）先側の縁部に突
起４１を設けている。[Third Embodiment] In the third embodiment shown in FIGS. 6 and 7, the ventilation hole 27 is provided with a projection 41 for guiding air. More specifically, the protrusions 41 are provided at the edges of the vent holes 27 on the forward sides of the rotary tub 6 in the positive rotation direction (the direction of arrow A).
【００４２】このようにすることにより、回転槽６の正
方向の回転によって生じる気流が、図７に矢印Ｃで示す
ように、突起４１に誘導されて凹部２１内に流入しやす
くなり、ヒートシンク２５の周辺を流れる空気の量が増
す。この結果、ヒートシンク２５の、空気との熱交換量
が増加し、パワー部品２４の温度上昇をより効果的に抑
制することができる。In this way, the airflow generated by the rotation of the rotary tub 6 in the forward direction is guided by the projections 41 and easily flows into the recesses 21 as shown by the arrow C in FIG. The amount of air flowing around the area increases. As a result, the heat exchange amount of the heat sink 25 with the air increases, and the temperature rise of the power component 24 can be more effectively suppressed.
【００４３】なお、この場合も、突起４１を設ける位置
の対象とする回転槽６の回転方向を、正の回転方向、す
なわち、脱水運転時の回転方向としており、これによっ
て、最も高温となる最終脱水運転時のパワー部品２４の
温度上昇の抑制が効果的にできるようになるが、これ
も、最終脱水運転時のことを考慮しなければ、突起４１
を設ける位置は、回転槽６の逆の回転方向（矢印Ａとは
反対の方向）先側であっても良いものであり、その回転
槽６の逆方向の回転によって上述同様の作用効果を得る
ことができる。Also in this case, the rotation direction of the rotary tub 6 at the position where the projection 41 is provided is set to the positive rotation direction, that is, the rotation direction at the time of the spin-drying operation. The temperature rise of the power component 24 during the dehydration operation can be effectively suppressed, but this can also be achieved by considering the protrusion 41 if the final dehydration operation is not considered.
May be provided on the front side in the opposite rotation direction (direction opposite to arrow A) of the rotary tub 6, and the same effect as described above is obtained by the rotation of the rotary tub 6 in the reverse direction. be able to.
【００４４】更に、この場合、パワー部品２４とヒート
シンク２５とを含む電子ユニット３２、並びに通気孔２
７を、前面側で回転槽６と筐体３との間の最も狭隘な中
央部より回転槽６の正の回転方向先側に偏倚させて配置
することにより、第２実施例の作用効果も併せて得るよ
うにしているが、偏倚させずに配置しても良く、又、偏
倚させる場合、逆に偏倚させても良い。この場合、突起
４１は回転槽６の逆の回転方向（矢印Ａとは反対の方
向）先側に設けるのが好ましい。加えて、突起４１は、
図８に示すように回転槽６の回転方向先とは反対側に延
びる舌部５１ａを先端に有する突起５１とすることによ
り、回転槽６の回転によって生じる気流を、一段と凹部
２１内に流入しやすくできる。Further, in this case, the electronic unit 32 including the power component 24 and the heat sink 25 and the air hole 2
7 is arranged so as to be deviated from the narrowest central portion between the rotary tub 6 and the housing 3 on the front side toward the positive rotation direction front side of the rotary tub 6, so that the operation and effect of the second embodiment are also improved. Although they are obtained together, they may be arranged without being deviated, and when they are deviated, they may be deviated conversely. In this case, it is preferable that the projection 41 is provided on the front side of the rotating tank 6 in the opposite rotation direction (the direction opposite to the arrow A). In addition, the protrusion 41
As shown in FIG. 8, by forming the protrusion 51 having a tongue portion 51 a at the tip end extending to the opposite side of the rotation direction of the rotary tub 6, the airflow generated by the rotation of the rotary tub 6 flows into the recess 21 further. Can be easier.
【００４５】［第４実施例］図９に示す第４実施例にお
いては、通気孔２７が空気流入側と空気流出側とに分か
れ、その両方の通気孔２７にそれぞれ空気の誘導をする
突起６１，６２を設けている。詳細には、この場合、回
転槽６が正方向（矢印Ａ方向）に回転したときを考えて
みると、その回転に伴って生じる気流も同方向に誘起さ
れるから、通気孔２７は、図中左側のものが空気流入側
となり、右側のものが空気流出側となる。このうち、空
気流入側の例えば２つの通気孔２７には、回転槽６の正
の回転方向先側の縁部に突起６１を設け、空気流出側の
例えば１つの通気孔２７には、回転槽６の正の回転方向
とは反対側の縁部に突起６２を設けている。[Fourth Embodiment] In a fourth embodiment shown in FIG. 9, the ventilation holes 27 are divided into an air inflow side and an air outflow side, and projections 61 for guiding air to both of the ventilation holes 27 are provided. , 62 are provided. More specifically, in this case, when the rotating tub 6 is rotated in the forward direction (the direction of arrow A), the airflow generated by the rotation is also induced in the same direction. The one on the middle left is the air inflow side, and the one on the right is the air outflow side. Of these, for example, two vent holes 27 on the air inflow side are provided with protrusions 61 on the edge of the rotary tank 6 on the front side in the positive rotation direction, and for example, one vent hole 27 on the air outflow side is provided with a rotary tank. A protrusion 62 is provided on an edge of the side opposite to the positive rotation direction of No. 6.
【００４６】このようにすることにより、回転槽６の正
方向の回転によって生じる気流が、図に矢印Ｄで示すよ
うに、空気流入側の通気孔２７からは突起６１に直接誘
導されて凹部２１内に流入しやすくなり、空気流出側の
通気孔２７からは突起６２により流入が阻止され、その
先側の通気孔２７部分で負圧となって、流出が誘導され
る。この結果、ヒートシンク２５の周辺を流れる空気の
量が更に増し、ヒートシンク２５の、空気との熱交換量
も更に増加して、パワー部品２４の温度上昇を一段と効
果的に抑制することができる。In this manner, the air flow generated by the rotation of the rotary tub 6 in the forward direction is directly guided from the air inlet side ventilation hole 27 to the projection 61 as shown by the arrow D in the figure, and The protrusion 62 prevents the inflow from the vent hole 27 on the air outflow side, and a negative pressure is generated at the vent hole 27 on the front side to induce the outflow. As a result, the amount of air flowing around the heat sink 25 further increases, and the heat exchange amount of the heat sink 25 with the air further increases, so that the temperature rise of the power component 24 can be further effectively suppressed.
【００４７】なお、この場合、回転槽６が逆方向（矢印
Ａとは反対の方向）に回転したときには、通気孔２７及
び突起６１，６２は上述とは反対に作用して、このとき
の気流が凹部２１内に流入しやすく、又、凹部２１内か
ら流出しやすくなるように機能する。たゞし、突起６
１，６２については、回転槽６の正の回転方向、すなわ
ち、脱水運転時の回転方向を対象にして、突起６１を図
中左側の２つの通気孔２７の縁部に設け、突起６２を右
側の１つの通気孔２７の縁部に設けており、これによっ
て、最も高温となる最終脱水運転時の空気の流入量が増
して、パワー部品２４の温度上昇の抑制が効果的にでき
るようになる。しかし、これも、最終脱水運転時のこと
を考慮しなければ、突起６１を図中左側の１つの通気孔
２７の縁部に設け、突起６２を右側の２つの通気孔２７
の縁部に設けても良い。In this case, when the rotary tub 6 rotates in the opposite direction (the direction opposite to the arrow A), the ventilation holes 27 and the projections 61 and 62 act in the opposite manner to the above, and the airflow at this time is reduced. Functions to easily flow into the concave portion 21 and flow out from the concave portion 21. Warm, protrusion 6
With respect to 1, 62, the projection 61 is provided at the edge of the two ventilation holes 27 on the left side in the figure, and the projection 62 is set on the right side in the positive rotation direction of the rotary tub 6, that is, the rotation direction during the spin-drying operation. Is provided at the edge of one of the ventilation holes 27, whereby the amount of air flowing in at the time of the final dehydration operation at the highest temperature increases, and the temperature rise of the power component 24 can be effectively suppressed. . However, also in this case, if the final dehydration operation is not taken into consideration, the projection 61 is provided at the edge of one ventilation hole 27 on the left side in the figure, and the projection 62 is provided on the two ventilation holes 27 on the right side.
May be provided at the edge of the frame.
【００４８】更に、この場合も、パワー部品２４とヒー
トシンク２５とを含む電子ユニット３２、並びに通気孔
２７を、前面側で回転槽６と筐体３との間の最も狭隘な
中央部より回転槽６の正の回転方向先側に偏倚させて配
置することにより、第２実施例の作用効果も併せて得る
ようにしているが、偏倚させずに配置しても良く、又、
偏倚させる場合、逆に偏倚させても良い。Further, also in this case, the electronic unit 32 including the power component 24 and the heat sink 25 and the ventilation hole 27 are arranged at the front side from the narrowest central portion between the rotary tank 6 and the housing 3 in the rotary tank. 6 is arranged so as to be deviated to the forward side in the positive rotation direction, so that the operation and effect of the second embodiment can be obtained at the same time. However, it may be arranged without being deviated.
In the case of a bias, the bias may be reversed.
【００４９】［第５実施例］図１０及び図１１に示す第
５実施例においては、ヒートシンク２５に、周辺の空気
の流れに沿う方向に延びるフィン７１を形成している。
この場合、ヒートシンク２５の周辺の空気の流れは、図
１０では左右方向、図１１では紙面と直交する方向であ
り、フィン７１はこの方向に延びるように形成してい
る。[Fifth Embodiment] In the fifth embodiment shown in FIGS. 10 and 11, the heat sink 25 is provided with fins 71 extending in a direction along the flow of the surrounding air.
In this case, the flow of the air around the heat sink 25 is the left-right direction in FIG. 10 and the direction perpendicular to the paper surface in FIG. 11, and the fins 71 are formed to extend in this direction.
【００５０】このようにすることにより、ヒートシンク
２５の表面積をフィン７１によって増やすことができる
と共に、このフィン７１の部分を抵抗少なく空気を流す
ことができ、その結果、ヒートシンク２５の、空気との
熱交換量が増加して、パワー部品２４の温度上昇をより
効果的に抑制することができる。In this manner, the surface area of the heat sink 25 can be increased by the fins 71, and air can flow through the fins 71 with low resistance. The replacement amount increases, and the temperature rise of the power component 24 can be more effectively suppressed.
【００５１】加えて、この場合、通気孔２７はフィン７
１の延び方向に並べて設けている。これにより、空気が
フィン７１に沿って一段と流れやすくなり、その結果、
ヒートシンク２５の、空気との熱交換量が更に増加し
て、パワー部品２４の温度上昇を一段と効果的に抑制す
ることができる。更に、この場合、通気孔２７はフィン
７１の中間部に対応させても設けており、これによって
フィン７１に対する、凹部２１外空気の直接の接触をよ
り盛んにできて、パワー部品２４の温度上昇を更に効果
的に抑制することができる。In addition, in this case, the ventilation hole 27 is
1 are provided side by side in the extending direction. This makes it easier for air to flow along the fins 71, and as a result,
The amount of heat exchange between the heat sink 25 and the air further increases, and the temperature rise of the power component 24 can be further effectively suppressed. Further, in this case, the ventilation hole 27 is also provided so as to correspond to the intermediate portion of the fin 71, whereby direct contact of the air outside the concave portion 21 with the fin 71 can be increased, and the temperature rise of the power component 24 increases. Can be more effectively suppressed.
【００５２】なお、この場合も、パワー部品２４とヒー
トシンク２５とを含む電子ユニット３２、並びに通気孔
２７を、前面側で回転槽６と筐体３との間の最も狭隘な
中央部より回転槽６の正の回転方向先側に偏倚させて配
置することにより、第２実施例の作用効果も併せて得る
ようにしているが、偏倚させずに配置しても良く、又、
偏倚させる場合、逆に偏倚させても良い。更に、通気孔
２７には突起６１，６２を設けているが、これも必ずし
も必要とはしない。In this case as well, the electronic unit 32 including the power component 24 and the heat sink 25 and the ventilation hole 27 are arranged at the front side of the rotary tank 6 from the narrowest central portion between the rotary tank 6 and the housing 3. 6 is arranged so as to be deviated to the forward side in the positive rotation direction, so that the operation and effect of the second embodiment can be obtained at the same time. However, it may be arranged without being deviated.
In the case of a bias, the bias may be reversed. Furthermore, the ventilation holes 27 are provided with projections 61 and 62, but this is not always necessary.
【００５３】［第６実施例］図１２に示す第６実施例に
おいては、隔絶部材である凹部２１の周壁２６の底部
を、中央部が最も下方へ突出するＶ字状に形成し、その
最下部近傍のうちの回転槽６の正の回転方向（矢印Ａ方
向）とは反対の方向に臨む部分８１の例えば２か所に通
気孔８２を形成し、それより回転槽６の正の回転方向先
側に偏倚させてヒートシンク２５を配置している。[Sixth Embodiment] In the sixth embodiment shown in FIG. 12, the bottom of the peripheral wall 26 of the concave portion 21, which is an isolating member, is formed in a V-shape whose central portion projects downward most. Ventilation holes 82 are formed in, for example, two portions of the portion 81 near the lower portion facing in the direction opposite to the positive rotation direction (the direction of arrow A) of the rotary tub 6, and the positive rotation direction of the rotary tub 6 is thereby formed. The heat sink 25 is disposed so as to be biased to the front side.
【００５４】このようにすることにより、回転槽６の正
方向の回転によって生じる気流が、凹部２１内に流入し
やすくなり、ヒートシンク２５の周辺を流れる空気の量
が増す。この結果、ヒートシンク２５の、空気との熱交
換量が増加し、パワー部品２４の温度上昇をより効果的
に抑制することができる。By doing so, the airflow generated by the rotation of the rotary tub 6 in the forward direction is more likely to flow into the concave portion 21, and the amount of air flowing around the heat sink 25 is increased. As a result, the heat exchange amount of the heat sink 25 with the air increases, and the temperature rise of the power component 24 can be more effectively suppressed.
【００５５】なお、この場合も、通気孔８２を設け、且
つヒートシンク２５を偏倚させる位置の対象とする回転
槽６の回転方向を、正の回転方向、すなわち、脱水運転
時の回転方向としており、これによって、最も高温とな
る最終脱水運転時のパワー部品２４の温度上昇の抑制が
効果的にできるようになるが、これも、最終脱水運転時
のことを考慮しなければ、通気孔８２を設ける位置は、
回転槽６の逆の回転方向（矢印Ａとは反対の方向）とは
反対の方向、すなわち、正の回転方向に臨む部分であっ
ても良いものであり、ヒートシンク２５はそれより回転
槽６の逆の回転方向先側に偏倚させて配置すれば良いも
のであって、その回転槽６の逆方向の回転により上述同
様の作用効果を得ることができる。Also in this case, the rotation direction of the rotary tub 6 to which the vent hole 82 is provided and the heat sink 25 is biased is set to the positive rotation direction, that is, the rotation direction during the dehydration operation. This makes it possible to effectively suppress the temperature rise of the power component 24 during the final dehydration operation, which is the highest temperature. However, the ventilation hole 82 is also provided unless the final dehydration operation is considered. The position is
The heat sink 25 may be a part facing the opposite rotation direction (the direction opposite to the arrow A) of the rotating tub 6, that is, the part facing the positive rotating direction. What is necessary is just to displace it toward the front side in the reverse rotation direction, and the same effect as described above can be obtained by the rotation of the rotary tank 6 in the reverse direction.
【００５６】又、この場合、回路基板３１とパワー部品
２４は回転槽６の回転方向先側には偏倚させず、ヒート
シンク２５のみを回転槽６の回転方向先側に偏倚させる
ようにしても良い。Further, in this case, the circuit board 31 and the power component 24 may not be biased toward the rotation direction front side of the rotary tub 6, and only the heat sink 25 may be biased toward the rotation direction front side of the rotary tub 6. .
【００５７】［第７実施例］図１３に示す第７実施例に
おいては、隔絶部材である凹部２１の周壁２６の底部
に、回転槽６の正の回転方向（矢印Ａ方向）とは反対の
方向に臨む段部９１を形成し、この段部９１に通気孔９
２を形成しており、それより回転槽６の正の回転方向先
側に偏倚させてヒートシンク２５を配置している。[Seventh Embodiment] In the seventh embodiment shown in FIG. 13, the bottom of the peripheral wall 26 of the concave portion 21 as the isolation member is provided with the opposite direction to the positive rotation direction (the direction of the arrow A) of the rotary tub 6. A step 91 facing the direction is formed.
The heat sink 25 is disposed so as to be deviated toward the positive rotation direction front side of the rotary tank 6 therefrom.
【００５８】このようにしても、上述同様、回転槽６の
正方向の回転によって生じる気流が、凹部２１内に流入
しやすくなり、ヒートシンク２５の周辺を流れる空気の
量が増す。この結果、ヒートシンク２５の、空気との熱
交換量が増加し、パワー部品２４の温度上昇をより効果
的に抑制することができる。Also in this case, as described above, the airflow generated by the rotation of the rotary tub 6 in the forward direction is more likely to flow into the concave portion 21, and the amount of air flowing around the heat sink 25 is increased. As a result, the heat exchange amount of the heat sink 25 with the air increases, and the temperature rise of the power component 24 can be more effectively suppressed.
【００５９】なお、この場合も、段部９１及び通気孔９
２を設け、且つヒートシンク２５を偏倚させる位置の対
象とする回転槽６の回転方向を、正の回転方向、すなわ
ち、脱水運転時の回転方向としており、これによって、
最も高温となる最終脱水運転時のパワー部品２４の温度
上昇の抑制が効果的にできるようになるが、これも、最
終脱水運転時のことを考慮しなければ、段部９１の向き
は、回転槽６の逆の回転方向（矢印Ａとは反対の方向）
とは反対の方向、すなわち、正の回転方向に臨む向きで
あっても良いものであり、ヒートシンク２５はその向き
の段部９１に設けた通気孔９２より回転槽６の逆の回転
方向先側に偏倚させて配置すれば良いものであって、そ
の回転槽６の逆方向の回転により上述同様の作用効果を
得ることができる。Also in this case, the step portion 91 and the ventilation hole 9
2, and the rotation direction of the rotary tub 6 as a target of the position where the heat sink 25 is biased is set to the positive rotation direction, that is, the rotation direction during the spin-drying operation.
Although it is possible to effectively suppress the temperature rise of the power component 24 during the final dehydration operation at the highest temperature, the direction of the stepped portion 91 is rotated if the final dehydration operation is not considered. Reverse direction of rotation of tank 6 (direction opposite to arrow A)
In other words, the heat sink 25 may be in a direction facing the positive rotation direction. And the same effect as described above can be obtained by the rotation of the rotating tank 6 in the opposite direction.
【００６０】又、この場合、回路基板３１とパワー部品
２４は回転槽６の回転方向先側には偏倚させず、ヒート
シンク２５のみを回転槽６の回転方向先側に偏倚させる
ようにしても良い。Further, in this case, the circuit board 31 and the power component 24 may not be biased toward the rotation direction front side of the rotating tub 6, and only the heat sink 25 may be biased toward the rotation direction front side of the rotary tub 6. .
【００６１】［第８実施例］図１４に示す第８実施例に
おいては、遮蔽部材である凹部２１の周壁２６と回転槽
６との間、この場合、外槽４の上端周縁部に環状のカバ
ー１０１を設けており、凹部２１の周壁２６の底部に前
述の通気孔２７を設けると共に、このカバー１０１の、
凹部２１と対応する部分、中でもヒートシンク２５配置
部分と対応する部分にも通気孔１０２を設けている。[Eighth Embodiment] In the eighth embodiment shown in FIG. 14, an annular ring is formed between the peripheral wall 26 of the concave portion 21 serving as a shielding member and the rotary tank 6, in this case, the upper edge of the outer tank 4. A cover 101 is provided, and the above-described ventilation hole 27 is provided at the bottom of the peripheral wall 26 of the concave portion 21.
Vent holes 102 are also provided in portions corresponding to the concave portions 21, particularly in portions corresponding to the portions where the heat sink 25 is disposed.
【００６２】このようにすることにより、回転槽６から
飛散する水沫が、凹部２１の周壁２６底部の通気孔２７
から電子ユニット２２の存する凹部２１内に入り込むこ
とをカバー１０１によって防止することができる。この
場合、電子ユニット２２には一般に防水のためのポッテ
ィングが施されているが、それにはピンホール等がある
おそれがあり、水がかからぬようにした方が好ましい。
この水かかりの防止がカバー１０１によってできること
により、電子ユニット２２の電気的信頼性を高く得るこ
とができる。In this way, the water scattered from the rotary tank 6 is prevented from flowing through the ventilation holes 27 at the bottom of the peripheral wall 26 of the recess 21.
The cover 101 can prevent the electronic unit 22 from entering into the recess 21 where the electronic unit 22 exists. In this case, the electronic unit 22 is generally provided with a potting for waterproofing, but there is a possibility that the electronic unit 22 has a pinhole or the like, and it is preferable that the electronic unit 22 is not exposed to water.
By preventing the splashing of water by the cover 101, the electrical reliability of the electronic unit 22 can be improved.
【００６３】又、それでいて、回転槽６の回転によって
生じる気流を、カバー１０１の通気孔１０２から通気孔
２７を通じて凹部２１内に流入させ得るものであり、か
くして、電子ユニット２２への水かかりを極力防止しな
がら、パワー部品２４の温度上昇を効果的に抑制するこ
とができる。なお、この場合、凹部２１の周壁２６の底
部と通気孔２７は、前記第６実施例あるいは第７実施例
の凹部２１の周壁２６の底部、及び通気孔８２，９２に
変えて実施するようにしても良い。In addition, the air flow generated by the rotation of the rotary tub 6 can flow into the concave portion 21 from the ventilation hole 102 of the cover 101 through the ventilation hole 27, so that the water splash on the electronic unit 22 can be minimized. The temperature rise of the power component 24 can be effectively suppressed while preventing the temperature. In this case, the bottom of the peripheral wall 26 of the concave portion 21 and the ventilation holes 27 are replaced with the bottom of the peripheral wall 26 of the concave portion 21 and the ventilation holes 82 and 92 of the sixth or seventh embodiment. May be.
【００６４】［第９実施例］図１５に示す第９実施例に
おいては、上記第８実施例の凹部２１の周壁２６の底部
の通気孔２７（８２，９２）を、カバー１０１の通気孔
１０２より回転槽６の正の回転方向（矢印Ａ方向）先側
に位置するように設けている。[Ninth Embodiment] In the ninth embodiment shown in FIG. 15, the ventilation holes 27 (82, 92) at the bottom of the peripheral wall 26 of the recess 21 of the eighth embodiment are replaced with the ventilation holes 102 of the cover 101. It is provided so as to be located further in the positive rotation direction (direction of arrow A) of the rotary tub 6.
【００６５】このようにすることにより、回転槽６の正
方向の回転により誘起されてカバー１０１の通気孔１０
２を通った空気が流れる先に、凹部２１の周壁２６底部
の通気孔２７（８２，９２）が位置することになるか
ら、空気が凹部２１内に流入しやすくなって、パワー部
品２４の温度上昇を効果的に抑制することができる。In this way, the rotation of the rotary tank 6 in the forward direction induces the air holes 10 in the cover 101.
Since the air holes 27 (82, 92) at the bottom of the peripheral wall 26 of the recess 21 are located before the air flowing through the recess 2 flows, the air easily flows into the recess 21 and the temperature of the power component 24 increases. The rise can be effectively suppressed.
【００６６】又、この場合、カバー１０１の通気孔１０
２と凹部２１の周壁２６底部の通気孔２７（８２，９
２）とは、上下に位置が合致することがなくなり、これ
によって、回転槽６から飛散する水沫が凹部２１内に入
り込むのを、より確実に防止することができる。In this case, the air holes 10 in the cover 101
2 and the vent hole 27 (82, 9) at the bottom of the peripheral wall 26 of the recess 21.
With 2), the positions do not coincide with each other in the up-down direction, whereby it is possible to more reliably prevent the water droplets scattered from the rotary tank 6 from entering the concave portion 21.
【００６７】なお、この場合も、凹部２１の周壁２６の
底部の通気孔２７（８２，９２）を偏倚させる位置の対
象とする回転槽６の回転方向を、正の回転方向、すなわ
ち、脱水運転時の回転方向としており、これによって、
最も高温となる最終脱水運転時のパワー部品２４の温度
上昇の抑制が効果的にできるようになるが、これも、最
終脱水運転時のことを考慮しなければ、通気孔２７（８
２，９２）を偏倚させる位置は、回転槽６の逆の回転方
向（矢印Ａとは反対の方向）先側であっても良いもので
あり、その回転槽６の逆方向の回転によって上述同様の
作用効果を得ることができる。In this case as well, the rotation direction of the rotary tub 6 at the position where the vent hole 27 (82, 92) at the bottom of the peripheral wall 26 of the concave portion 21 is biased is set to the positive rotation direction, that is, the dehydration operation. The direction of rotation when
Although it is possible to effectively suppress the temperature rise of the power component 24 during the final dehydration operation at the highest temperature, the ventilation holes 27 (8
2, 92) may be on the front side in the opposite rotation direction (direction opposite to arrow A) of the rotary tub 6, and the rotation of the rotary tub 6 in the reverse direction may be the same as described above. The operation and effect of the present invention can be obtained.
【００６８】更に、この場合、パワー部品２４とヒート
シンク２５とを含む電子ユニット３２、並びに通気孔２
７を、前面側で回転槽６と筐体３との間の最も狭隘な中
央部より回転槽６の正の回転方向先側に偏倚させて配置
することにより、第２実施例の作用効果も併せて得るよ
うにしているが、偏倚させずに配置しても良い。Further, in this case, the electronic unit 32 including the power component 24 and the heat sink 25 and the vent hole 2
7 is arranged so as to be deviated from the narrowest central portion between the rotary tub 6 and the housing 3 on the front side toward the positive rotation direction front side of the rotary tub 6, so that the operation and effect of the second embodiment are also improved. Although they are obtained together, they may be arranged without any deviation.
【００６９】［第１０実施例］図１６に示す第１０実施
例においては、通気孔２７の、回転槽６の正の回転方向
（矢印Ａ方向）とは反対側の部分に突起１１１を設けて
いる。このようにすることにより、回転槽６から飛散す
る水沫が、回転槽６の正方向の回転によって誘起される
気流に乗って凹部２１内に入り込もうとしたとき、それ
を突起１１１により阻止して、より確実な防水ができ
る。又、凹部２１外から凹部２１内への空気の流入は、
凹部２１内の空気の自然対流等に伴って通気孔２７から
自然になされる。[Tenth Embodiment] In the tenth embodiment shown in FIG. 16, a projection 111 is provided on a portion of the ventilation hole 27 opposite to the positive rotation direction (the direction of arrow A) of the rotary tub 6. I have. By doing in this way, when water droplets scattered from the rotating tub 6 try to enter the concave portion 21 by riding on the airflow induced by the rotation of the rotating tub 6 in the forward direction, it is prevented by the projection 111, More reliable waterproofing is possible. Further, the inflow of air from outside the recess 21 into the recess 21 is as follows.
The air is naturally formed from the vent hole 27 in accordance with the natural convection of the air in the concave portion 21 and the like.
【００７０】なお、この場合、突起１１１は通気孔２７
の全周縁部に設けても良いが、少なくとも、回転槽６の
回転方向とは反対側の部分に設けていれば、上述の作用
を得ることができる。又、この場合も、突起１１１を設
ける位置の対象とする回転槽６の回転方向は、正の回転
方向、すなわち、脱水運転時の回転方向としており、こ
れによって、回転槽６からの水沫の飛散の多い、該回転
槽６の高速回転時における凹部２１内への水沫の入り込
みを防止できるから、電子ユニット２２の電気的信頼性
をより高く得ることができるが、これも、最終脱水運転
時のことを考慮しなければ、突起１１１を設ける位置
は、回転槽６の逆の回転方向（矢印Ａとは反対の方向）
とは反対側、すなわち、正の回転方向先側の部分であっ
ても良いものであり、その回転槽６の逆方向の回転に対
して上述同様の作用効果を得ることができる。In this case, the projection 111 is
May be provided on the entire periphery, but if provided at least in a portion opposite to the rotation direction of the rotary tub 6, the above-described operation can be obtained. Also in this case, the rotation direction of the rotary tub 6 at the position where the protrusion 111 is provided is set to the positive rotation direction, that is, the rotation direction at the time of the dehydration operation. Since it is possible to prevent water droplets from entering into the concave portion 21 at the time of high-speed rotation of the rotating tub 6, the electrical reliability of the electronic unit 22 can be further improved. If this is not taken into consideration, the position where the protrusion 111 is provided is in the opposite rotation direction of the rotary tank 6 (the direction opposite to the arrow A).
However, the same effect as described above can be obtained for the rotation of the rotary tank 6 in the reverse direction.
【００７１】更に、この場合、パワー部品２４とヒート
シンク２５とを含む電子ユニット３２、並びに通気孔２
７を、前面側で回転槽６と筐体３との間の最も狭隘な中
央部より回転槽６の正の回転方向先側に偏倚させて配置
することにより、第２実施例の作用効果も併せて得るよ
うにしているが、偏倚させずに配置しても良く、又、偏
倚させる場合、逆に偏倚させても良い。Further, in this case, the electronic unit 32 including the power component 24 and the heat sink 25 and the vent hole 2
7 is arranged so as to be deviated from the narrowest central portion between the rotary tub 6 and the housing 3 on the front side toward the positive rotation direction front side of the rotary tub 6, so that the operation and effect of the second embodiment are also improved. Although they are obtained together, they may be arranged without being deviated, and when they are deviated, they may be deviated conversely.
【００７２】加えて、この場合、凹部２１の周壁２６の
底部と通気孔２７は、前記第６実施例あるいは第７実施
例の凹部２１の周壁２６の底部、及び通気孔８２，９２
に変えて実施するようにしても良い。In addition, in this case, the bottom of the peripheral wall 26 of the concave portion 21 and the vent hole 27 correspond to the bottom of the peripheral wall 26 of the concave portion 21 of the sixth or seventh embodiment and the vent holes 82, 92.
Alternatively, it may be implemented.
【００７３】［第１１実施例］図１７に示す第１１実施
例においては、遮蔽部材である凹部２１の周壁２６の底
部に傾斜部１２１を形成し、この傾斜部１２１に、上記
第１０実施例の通気孔２７の突起１１１を傾斜の上側ほ
ど大きく突出するように設けている。[Eleventh Embodiment] In the eleventh embodiment shown in FIG. 17, an inclined portion 121 is formed at the bottom of the peripheral wall 26 of the concave portion 21 which is a shielding member. Of the vent hole 27 is provided so as to protrude more toward the upper side of the slope.
【００７４】このようにすることにより、凹部２１が占
める筐体３内のスペースを増さずに、通気孔２７の開口
面積を極力大きく確保でき、これによって、凹部２１内
への水沫の入り込みを防止できる構造で、凹部２１外か
ら凹部２１内への空気の自然流入量も大きく確保できる
から、パワー部品２４の温度上昇をより効果的に抑制す
ることができる。By doing so, the opening area of the ventilation hole 27 can be kept as large as possible without increasing the space in the housing 3 occupied by the concave portion 21, thereby preventing water from entering the concave portion 21. With the structure that can prevent such a situation, a large amount of natural inflow of air from outside the concave portion 21 into the concave portion 21 can be ensured.
【００７５】なお、上記各実施例では、衣類の洗濯及び
脱水をいずれも回転槽６の回転によって行うものとした
が、そのうち、洗濯は、回転槽６を制止させた状態で、
その内部に配設した撹拌体を回転させることにより生成
する水流で行うようにしても良い。この場合、回転槽６
の回転により誘起する気流を通気孔２７，８２，９２か
ら凹部２１内に流入させるのは、脱水運転時にのみ行わ
れることになるが、洗濯運転時にも、撹拌体の回転によ
って生成する水流に伴って気流が誘起され、この誘起し
た気流を通気孔２７，８２，９２から凹部２１内に流入
させて、パワー部品２４の温度上昇を抑制することが可
能である。In each of the above embodiments, both the washing and the dehydration of the clothes are performed by rotating the rotary tub 6, but the washing is performed with the rotary tub 6 stopped.
The rotation may be performed by a water flow generated by rotating a stirring member disposed inside the stirring member. In this case, the rotating tank 6
The air flow induced by the rotation of the nozzles is caused to flow into the recesses 21 from the ventilation holes 27, 82, and 92 only during the dehydration operation, but also during the washing operation due to the water flow generated by the rotation of the stirring body. Thus, an airflow is induced, and the induced airflow is allowed to flow into the concave portion 21 from the ventilation holes 27, 82, and 92, thereby suppressing a temperature rise of the power component 24.
【００７６】[0076]
【発明の効果】本発明は以上説明したとおりのもので、
下記の効果を奏する。請求項１の洗濯機によれば、回転
槽の回転によって生じる気流をヒートシンクの周辺を流
し、その空気流によってヒートシンクの放熱を盛んにで
きるから、パワー部品の温度上昇の抑制が充分にでき
て、近年の、パワー部品の発熱密度が大きくなったもの
にも、又、大形のヒートシンクが使用できないものにも
充分好適させることができる。The present invention is as described above.
The following effects are obtained. According to the washing machine of the first aspect, the air flow generated by the rotation of the rotating tub flows around the heat sink, and the heat flow of the heat sink can be increased by the air flow, so that the temperature rise of the power components can be sufficiently suppressed, In recent years, it can be adequately suited to a power component having a large heat generation density or a component in which a large heat sink cannot be used.
【００７７】請求項２の洗濯機によれば、回転槽の回転
によってヒートシンクの周辺に流れる空気の量を多くな
し得て、ヒートシンクの、空気との熱交換量を増加させ
得るから、パワー部品の温度上昇をより効果的に抑制す
ることができる。請求項３の洗濯機によれば、回転槽の
回転によって生じる気流を隔絶部材の内方に流入しやす
くできて、ヒートシンクの周辺を流れる空気の量が増す
から、パワー部品の温度上昇をより効果的に抑制するこ
とができる。According to the second aspect of the present invention, the amount of air flowing around the heat sink can be increased by the rotation of the rotary tub, and the amount of heat exchange of the heat sink with the air can be increased. Temperature rise can be suppressed more effectively. According to the washing machine of the third aspect, the airflow generated by the rotation of the rotary tub can easily flow into the inside of the isolation member, and the amount of air flowing around the heat sink increases, so that the temperature rise of the power components can be more effectively increased. Can be suppressed.
【００７８】請求項４の洗濯機によれば、回転槽の回転
によって生じる気流を、隔絶部材の内方に流入しやす
く、又、隔絶部材の内方から流出しやすくもできるか
ら、ヒートシンクの周辺を流れる空気の量が更に増し、
ヒートシンクの、空気との熱交換量も更に増加して、パ
ワー部品の温度上昇を一段と効果的に抑制することがで
きる。According to the washing machine of the fourth aspect, the air current generated by the rotation of the rotary tub can easily flow into the inside of the separating member and can easily flow out of the inside of the separating member. The amount of air flowing further increases,
The amount of heat exchange between the heat sink and the air is further increased, and the temperature rise of the power component can be further effectively suppressed.
【００７９】請求項５の洗濯機によれば、ヒートシンク
の表面積をフィンによって増やすことができると共に、
このフィンの部分を抵抗少なく空気を流すことができる
から、パワー部品の温度上昇をより効果的に抑制するこ
とができる。請求項６の洗濯機によれば、空気をヒート
シンクのフィンに沿って一段と流れやすくできるから、
パワー部品の温度上昇を一段と効果的に抑制することが
できる。According to the washing machine of the fifth aspect, the surface area of the heat sink can be increased by the fins,
Since air can flow through the fin portion with little resistance, the rise in temperature of the power component can be suppressed more effectively. According to the washing machine of claim 6, since air can flow more easily along the fins of the heat sink,
The temperature rise of the power component can be further effectively suppressed.
【００８０】請求項７の洗濯機によれば、回転槽の回転
によって生じる気流を隔絶部材の内方に流入しやすくで
きて、ヒートシンクの周辺を流れる空気の量が増すか
ら、パワー部品の温度上昇をより効果的に抑制すること
ができる。請求項８の洗濯機によれば、制御部への水か
かりをカバーにより極力防止しながら、回転槽の回転に
よって生じる気流をカバーを通して隔絶部材の内方に流
入させ得るから、パワー部品の温度上昇を効果的に抑制
することができる。According to the washing machine of the seventh aspect, the airflow generated by the rotation of the rotary tub can easily flow into the inside of the isolation member, and the amount of air flowing around the heat sink increases, so that the temperature of the power component rises. Can be suppressed more effectively. According to the washing machine of the eighth aspect, the air flow generated by the rotation of the rotary tub can be caused to flow into the inside of the isolation member through the cover while preventing the water from splashing on the control unit by the cover as much as possible, so that the temperature rise of the power component Can be effectively suppressed.
【００８１】請求項９の洗濯機によれば、回転槽の回転
により誘起されてカバーを通った空気を隔絶部材の内方
に流入しやすくできて、パワー部品の温度上昇を効果的
に抑制することができる。請求項１０の洗濯機によれ
ば、回転槽から飛散する水沫が、回転槽の回転によって
誘起される気流に乗って隔絶部材の内方に入り込もうと
するのを、突起により阻止して、より確実な防水ができ
ると共に、隔絶部材の外方から内方への空気の流入を、
隔絶部材内方の空気の自然対流等に伴って通気孔から自
然になし得るから、パワー部品の温度上昇を効果的に抑
制することができる。According to the washing machine of the ninth aspect, the air induced by the rotation of the rotary tub and passing through the cover can easily flow into the isolation member, and the temperature rise of the power component can be effectively suppressed. be able to. According to the washing machine of the tenth aspect, the projection prevents water droplets scattered from the rotating tub from entering the inside of the isolation member riding on the airflow induced by the rotation of the rotating tub. Waterproof, and the inflow of air from outside to inside of the isolation member,
Since the air can be naturally formed from the ventilation hole with the natural convection of the air inside the isolation member, the temperature rise of the power component can be effectively suppressed.
【００８２】請求項１１の洗濯機によれば、隔絶部材の
内方への水沫の入り込みを防止できる構造で、隔絶部材
が占める筐体内のスペースを増さずに、通気孔の開口面
積を極力大きく確保できて、隔絶部材の外方から内方へ
の空気の自然流入量を大きく確保できるから、パワー部
品の温度上昇をより効果的に抑制できる。According to the washing machine of the eleventh aspect, it is possible to prevent water from entering the inside of the separating member, and to minimize the opening area of the ventilation hole without increasing the space in the housing occupied by the separating member. Since a large amount can be secured and a large amount of natural inflow of air from the outside to the inside of the isolation member can be secured, a rise in temperature of the power component can be more effectively suppressed.
【００８３】請求項１２の洗濯機によれば、パワー部品
及びヒートシンクが最も高温となる最終脱水運転時に隔
絶部材の外方から内方への空気の流入ができて、パワー
部品の温度上昇の抑制が効果的にできる。又は、回転槽
からの水沫の飛散の多い、該回転槽の高速回転時におけ
る隔絶部材内方への水沫の入り込みを防止できて、制御
部の電気的信頼性を、より高く得ることができる。According to the washing machine of the twelfth aspect, during the final dehydration operation in which the power components and the heat sink have the highest temperature, air can flow from the outside to the inside of the isolation member, and the temperature rise of the power components can be suppressed. Can be effectively done. Alternatively, it is possible to prevent water droplets from splashing into the isolation member at the time of high-speed rotation of the rotary tub, where the water scatters a lot from the rotary tub, and it is possible to obtain higher electrical reliability of the control unit.
【図１】本発明の第１実施例を示すトップカバー部分の
平面図FIG. 1 is a plan view of a top cover portion showing a first embodiment of the present invention.
【図２】図１のＦ−Ｆ線に沿う縦断正面図FIG. 2 is a longitudinal sectional front view taken along line FF of FIG. 1;
【図３】全体の破断側面図FIG. 3 is an overall cutaway side view.
【図４】運転の進行に伴うヒートシンクの温度変化を表
した図FIG. 4 is a diagram showing a temperature change of a heat sink as the operation proceeds.
【図５】本発明の第２実施例を示す図１相当図FIG. 5 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.
【図６】本発明の第３実施例を示す図２相当図FIG. 6 is a view corresponding to FIG. 2, showing a third embodiment of the present invention;
【図７】一つの通気孔部分の拡大縦断正面図FIG. 7 is an enlarged vertical sectional front view of one vent portion.
【図８】突起の異なる例を示す図７相当図FIG. 8 is a view corresponding to FIG. 7, showing a different example of a projection.
【図９】本発明の第４実施例を示す図２相当図FIG. 9 is a view corresponding to FIG. 2, showing a fourth embodiment of the present invention;
【図１０】本発明の第５実施例を示す主要部分の拡大下
面図FIG. 10 is an enlarged bottom view of a main part showing a fifth embodiment of the present invention.
【図１１】図１０のＧ−Ｇ線に沿う縦断側面図11 is a longitudinal sectional side view along the line GG of FIG. 10;
【図１２】本発明の第６実施例を示す図２相当図FIG. 12 is a view corresponding to FIG. 2, showing a sixth embodiment of the present invention;
【図１３】本発明の第７実施例を示す図２相当図FIG. 13 is a view corresponding to FIG. 2, showing a seventh embodiment of the present invention.
【図１４】本発明の第８実施例を示す主要部分の拡大縦
断側面図FIG. 14 is an enlarged vertical sectional side view of a main part showing an eighth embodiment of the present invention.
【図１５】本発明の第９実施例を示す図１部分相当図FIG. 15 is a view corresponding to FIG. 1 showing a ninth embodiment of the present invention;
【図１６】本発明の第１０実施例を示す図１部分相当拡
大図FIG. 16 is an enlarged view corresponding to FIG. 1 showing a tenth embodiment of the present invention.
【図１７】本発明の第１１実施例を示す図１４部分相当
拡大図FIG. 17 is an enlarged view corresponding to FIG. 14 showing an eleventh embodiment of the present invention.
３は筐体、６は回転槽、７は駆動部、２２は電子ユニッ
ト（制御部）、２４はパワー部品、２５はヒートシン
ク、２６はトップカバーの凹部の周壁（隔絶部材）、２
７は通気孔、３２は電子ユニット（制御部）、４１，５
１，６１，６２は突起、７１はフィン、８１は回転槽の
回転方向とは反対の方向に臨む部分、８２は通気孔、９
１は段部（回転槽の回転方向とは反対の方向に臨む部
分）、９２は通気孔、１０１はカバー、１０２は通気
孔、１１１は突起、１２１は傾斜部を示す。3 is a housing, 6 is a rotary tank, 7 is a drive unit, 22 is an electronic unit (control unit), 24 is a power component, 25 is a heat sink, 26 is a peripheral wall of a concave portion of the top cover (isolation member), 2
7 is a vent, 32 is an electronic unit (control unit), 41,5
Reference numerals 1, 61 and 62 denote protrusions, 71 denotes a fin, 81 denotes a portion facing the direction opposite to the rotation direction of the rotary tank, 82 denotes a vent,
Reference numeral 1 denotes a step (a portion facing in the direction opposite to the rotation direction of the rotary tank), 92 denotes a vent, 101 denotes a cover, 102 denotes a vent, 111 denotes a protrusion, and 121 denotes an inclined portion.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 池田 博志 愛知県瀬戸市穴田町991番地東芝エー・ブ イ・イー株式会社名古屋事業所内 (72)発明者 西村 隆宏 愛知県瀬戸市穴田町991番地 株式会社東 芝愛知工場内 (72)発明者 中村 公彦 愛知県瀬戸市穴田町991番地 株式会社東 芝愛知工場内 Ｆターム(参考） 3B155 AA01 AA06 BA12 BA27 CB06 CB53 CB69 DA02 JA03 MA01 MA02 ──────────────────────────────────────────────────の Continuing from the front page (72) Inventor Hiroshi Ikeda 991 Anada-cho, Seto-shi, Aichi Prefecture Toshiba Abu E Co., Ltd.Nagoya Office (72) Inventor Takahiro Nishimura 991, Anata-cho, Seto-shi, Aichi Stock (72) Inventor Kimihiko Nakamura 991 Anada-cho, Seto-shi, Aichi F-term (reference) 3A155 AA01 AA06 BA12 BA27 CB06 CB53 CB69 DA02 JA03 MA01 MA02
Claims (12)
と、 この回転槽を回転駆動する駆動部と、 パワー部品及びこれの放熱をするヒートシンクを有し、
前記駆動部への給電を制御する制御部と、 この制御部を囲って前記回転槽との間を隔絶した隔絶部
材とを具備するものにおいて、 前記ヒートシンクの近傍に位置する前記隔絶部材の一部
に、他の部分より多くの通気孔を設けたことを特徴とす
る洗濯機。1. A rotating tub for washing and dewatering clothes, a driving unit for rotating the rotating tub, a power component and a heat sink for radiating heat therefrom,
A control unit that controls power supply to the driving unit; and a separating member that surrounds the control unit and separates the rotary tank from the rotary tank. A part of the separating member located near the heat sink A washing machine characterized by having more vents than other parts.
れを収容した筐体との間の最も狭隘な部分より回転槽の
回転方向先側に偏倚させて配置したことを特徴とする請
求項１記載の洗濯機。2. A heat sink and a ventilation hole are arranged so as to be deviated from a narrowest portion between a rotary tub and a housing accommodating the rotary tub toward a rotation direction front side of the rotary tub. The washing machine according to 1.
たことを特徴とする請求項１記載の洗濯機。3. The washing machine according to claim 1, wherein a projection for guiding air is provided in the ventilation hole.
かれ、その両方の通気孔にそれぞれ空気の誘導をする突
起を設けたことを特徴とする請求項１記載の洗濯機。4. The washing machine according to claim 1, wherein the ventilation holes are divided into an air inflow side and an air outflow side, and both of the ventilation holes are provided with projections for guiding air, respectively.
う方向に延びるフィンを有することを特徴とする請求項
１記載の洗濯機。5. The washing machine according to claim 1, wherein the heat sink has fins extending in a direction along a flow of surrounding air.
方向に並べて設けたことを特徴とする請求項５記載の洗
濯機。6. The washing machine according to claim 5, wherein the ventilation holes are provided in a direction in which the fins of the heat sink extend.
と、 この回転槽を回転駆動する駆動部と、 パワー部品及びこれの放熱をするヒートシンクを有し、
前記駆動部への給電を制御する制御部と、 この制御部を囲って前記回転槽との間を隔絶した隔絶部
材とを具備するものにおいて、 その隔絶部材が回転槽の回転方向とは反対の方向に臨む
部分を有し、その部分に通気孔を設け、 それより回転槽の回転方向先側に偏倚させてヒートシン
クを配置したことを特徴とする洗濯機。7. A rotating tub for washing and dehydrating clothes, a driving unit for rotating the rotating tub, a power component and a heat sink for radiating heat therefrom,
A control unit for controlling power supply to the drive unit, and a separating member surrounding the control unit and separating the rotating tank from the rotating tank, wherein the separating member is opposite to the rotating direction of the rotating tank. A washing machine comprising: a portion facing in a direction; a vent hole provided in the portion; and a heat sink disposed so as to be biased toward a rotation direction front side of the rotating tub.
し、このカバーにも通気孔を設けたことを特徴とする請
求項１又は７記載の洗濯機。8. The washing machine according to claim 1, wherein a cover is provided between the shielding member and the rotary tub, and the cover is provided with a vent.
り回転槽の回転方向先側に位置することを特徴とする請
求項８記載の洗濯機。9. The washing machine according to claim 8, wherein the ventilation hole of the shielding member is located on the rotation direction front side of the rotary tub with respect to the ventilation hole of the cover.
向とは反対側の部分に突起を設けたことを特徴とする請
求項１又は７記載の洗濯機。10. The washing machine according to claim 1, wherein a projection is provided on at least a portion of the ventilation hole opposite to a rotation direction of the rotary tub.
傾斜部に、通気孔の突起を傾斜の上側ほど大きく突出す
るように設けたことを特徴とする請求項１０記載の洗濯
機。11. The washing machine according to claim 10, wherein the shielding member has an inclined portion at a bottom portion, and the projection of the ventilation hole is provided on the inclined portion so as to protrude more toward the upper side of the inclination.
運転時の回転方向としたことを特徴とする請求項２、
３、４、７、９、１０、１１のいずれかに記載の洗濯
機。12. The method according to claim 2, wherein the rotation direction of the target rotary tub is set to the rotation direction during the spin-drying operation.
The washing machine according to any one of 3, 4, 7, 9, 10, and 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09209099A JP3935287B2 (en) | 1999-03-31 | 1999-03-31 | Washing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09209099A JP3935287B2 (en) | 1999-03-31 | 1999-03-31 | Washing machine |
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| Publication Number | Publication Date |
|---|---|
| JP2000279695A true JP2000279695A (en) | 2000-10-10 |
| JP3935287B2 JP3935287B2 (en) | 2007-06-20 |
Family
ID=14044755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09209099A Expired - Fee Related JP3935287B2 (en) | 1999-03-31 | 1999-03-31 | Washing machine |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006209025A (en) * | 2005-01-31 | 2006-08-10 | Kyocera Mita Corp | Cooling structure and image forming apparatus provided with the cooling structure |
| JP2012085835A (en) * | 2010-10-20 | 2012-05-10 | Panasonic Corp | Control device for washing machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62202599A (en) * | 1986-02-28 | 1987-09-07 | 松下電器産業株式会社 | Electronic controller |
| JPH0449086U (en) * | 1990-08-24 | 1992-04-24 |
-
1999
- 1999-03-31 JP JP09209099A patent/JP3935287B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62202599A (en) * | 1986-02-28 | 1987-09-07 | 松下電器産業株式会社 | Electronic controller |
| JPH0449086U (en) * | 1990-08-24 | 1992-04-24 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006209025A (en) * | 2005-01-31 | 2006-08-10 | Kyocera Mita Corp | Cooling structure and image forming apparatus provided with the cooling structure |
| JP4647323B2 (en) * | 2005-01-31 | 2011-03-09 | 京セラミタ株式会社 | Cooling structure and image forming apparatus having the cooling structure |
| JP2012085835A (en) * | 2010-10-20 | 2012-05-10 | Panasonic Corp | Control device for washing machine |
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| Publication number | Publication date |
|---|---|
| JP3935287B2 (en) | 2007-06-20 |
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