JP3877543B2 - Drum washing machine - Google Patents

Drum washing machine Download PDF

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Publication number
JP3877543B2
JP3877543B2 JP2001122267A JP2001122267A JP3877543B2 JP 3877543 B2 JP3877543 B2 JP 3877543B2 JP 2001122267 A JP2001122267 A JP 2001122267A JP 2001122267 A JP2001122267 A JP 2001122267A JP 3877543 B2 JP3877543 B2 JP 3877543B2
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Japan
Prior art keywords
drum
outer tub
washing machine
heater
water
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JP2001122267A
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JP2002315985A (en
Inventor
孝司 福井
謙治 中川
哲 中村
晴美 竹内
順久 船田
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、水平軸又は傾斜軸を中心に回転するドラムを有するドラム式洗濯機に関する。なお、一般にドラム式洗濯機は洗濯から乾燥までを連続的に行うことができるものであることが多いが、ここで言うドラム式洗濯機は乾燥が行えないものであってもよい。
【0002】
【従来の技術】
従来、ドラム式洗濯機は、水平な軸を中心にして円筒籠状のドラムを外槽内に回転自在に配置した構成を備えており、外槽内に水を貯留した状態でドラムを回転させることによりドラム内に収容した洗濯物を叩き洗いする。このようなドラム式洗濯機のドラム内に洗濯物を出し入れするためには、洗濯機の前面パネルに設けられている横開き式のドアを開く必要があり、通常の設置状況では使用者が屈んだり腰を曲げたりした無理な姿勢をとる必要があった。これに対し、近年、より無理のない姿勢で洗濯物の出し入れが行えるように、ドラムの前部を斜め上方に向けて傾斜して配置した構成のドラム式洗濯機が市販されている。
【0003】
【発明が解決しようとする課題】
従来のドラム式洗濯機には外槽内に貯留した水を加温して洗浄性能を高めるようにしたものがあり、そのために、周面が円筒形状の外槽の最底部を窪ませてそこにヒータを収容している。しかしながら、このようなヒータと床面との間の間隔は所定以上確保することが安全上定められているため、その分だけ外槽を外箱内で高い位置に設ける必要があり、洗濯機の外箱の高さが高くなるという問題がある。
【0006】
発明の目的とするところは、外槽に貯留した水を加温するためのヒータの配置や形状を工夫することによって外形の高さを抑えることができるドラム式洗濯機を提供することにある。
【0007】
【課題を解決するための手段、及び効果】
上記課題を解決するために成された本発明は、外箱と、水を貯留するために該外箱内に設置された外槽と、該外槽に設けた軸受と、該軸受により回転自在に支承される軸体と、周面が略円筒形状でその後端面に前記軸体の一端が固着されたドラムと、を備えるドラム式洗濯機において、
前記外槽の側周面は、全体としては円筒体形状であるが、この円筒体の中心軸線を含む垂直平面で2つに分割された片側の下部が円筒体が描く円よりも外側に膨出した膨出部を有しており、
この膨出部の下側は、平坦であり且つ前記外槽の側周面の最底部と同じ位置とされ、
この膨出部内であって前記外槽の側周面の最低部よりも高い位置に水加熱用のヒータが配設され、
洗い運転やすすぎ運転時に前記外槽内に前記ヒータが浸かる程度に水が貯留され、貯留された水が前記ヒータによって温水化される、ことを特徴としている。
【0016】
本発明に係るドラム式洗濯機によれば、外箱内において、外槽の周面を成す円筒体から外側に膨出した部分はその円筒体の最底部よりも上に位置するので、ヒータも円筒体の最底部よりも上に配置される。そのため、床面とヒータとの間隔を所定距離以上に保つために、外槽を特に高く配置する必要がなくなり、洗濯機の外箱の高さを抑えることができる。また、この構成では外槽の底部を曲面でなく例えば平面状とすることができるため、安定して外箱内に取り付けることができる。
【0022】
【発明の実施の形態】
以下、第1〜第3発明の一実施例であるドラム式洗濯機について図面を参照して説明する。図1は本実施例(以下「第1実施例」という)のドラム式洗濯機の全体構成を示す側面縦断面図、図2はこのドラム式洗濯機の要部の正面縦断面図である。
【0023】
このドラム式洗濯機の外形を成す外箱1は斜め上方を向いた前面部1aを有し、その前面部1aには略円形状の衣類投入口1bが形成され、そこには内部を透視可能な横開き式のドア2が設けられている。外箱1の前面部1aの上部は後方に湾曲しつつ上面部1cに続いており、この曲面部1dに図示しない操作パネルと、前方に引き出し可能な洗剤容器12aが設けられている。
【0024】
外箱1の内部には、周面が略円筒形状(但しその一部は後述のように膨出している)の外槽3が左右両下側方を支持するダンパ4と上部を牽引する図示しないバネにより適度に揺動自在に保持されている。外槽3の前面部は外箱1の衣類投入口1bに相対して円形状に開口しており、この開口部3aと衣類投入口1bとはゴムなどの弾性体から成るシール部材5によって連結されている。
【0025】
外槽3の内部には、洗濯物を収容するための周面略円筒形状のドラム6が主軸7により軸支されている。すなわち、ドラム6は多数の通水穴6eを穿孔した円筒形状の胴部6aと、衣類投入用の円形の開口部6cを有する前面板6bと、後面板6dとから成り、胴部6aと前面板6b及び胴部6aと後面板6dはそれぞれ、前縁部及び後縁部に突出して形成された鍔部で加締めによって接合された上でネジ止めされている。主軸7の一端はドラム6の後面板6dの後部に強固に固定され、外槽3の後面部に装着された軸受固定部材8の軸受9により回転自在に支承されている。
【0026】
外槽3の後面部3cの後方に突出した主軸7の端部には、アウタロータ型の直流ブラシレスモータであるモータ10のロータ10bが取り付けられ、一方、軸受固定部材8にはモータ10のステータ10aが固定されている。永久磁石を含むロータ10bは巻線を含むステータ10aの外周側を取り囲むように配置されており、これによりモータ10は主軸7の延伸方向に薄型の構造を有している。図示しない制御回路からステータ10aに駆動電流が供給されるとロータ10bは回転し、主軸7を介してロータ10bと同一の回転速度でドラム6が回転駆動される。
【0027】
図1に明らかなように、ドラム6を内装した外槽3は、ドラム6の中心軸線C(主軸7の中心軸線と一致する)が水平線Hに対して予め定める角度θだけ傾くように前上がり傾斜でもって配置されている。ここで傾斜角度θは例えば5〜30°程度に設定される。外箱1の前面部1aの傾斜はこの外槽3及びドラム6の傾斜に応じて形成されているが、必ずしも同一角度である必要はない。
【0028】
外箱1内の上部空間には、給水バルブや風呂水給水用のポンプなどを含む給水部11が配設されており、この給水部11には、外部の給水栓に至る水道給水ホース11aや風呂の浴槽などに至る風呂水給水ホース(図示しない)などが着脱自在に連結されている。給水部11の前方には上記洗剤容器12aを引き出し自在に内装する洗剤投入部12が設けられており、給水部11から洗剤投入部12に供給された水は、洗剤投入部12の底部に接続された注水管12bを通して、外槽3の前方に設けられた注水口13から外槽3内へと供給される。その際、例えば洗い行程の給水時であれば、予め洗剤容器12aに収容された粉末洗剤や液体洗剤が水に流出して外槽3内へ供給され、例えば最終すすぎ行程の給水時であれば予め洗剤容器12aに収容された柔軟仕上げ剤などが水に流出して外槽3内へ供給される。
【0029】
給水部11から外槽3内へと給水が行われて外槽3に貯留すると、この水は通水穴6eを通してドラム6内へと流入する。また、脱水時にドラム6内で洗濯物から吐き出された水は通水穴6eを通して外槽3側へ飛散する。外槽3の底部後方には排水口14が設けられ、排水口14は排水バルブ15の流入口に接続されており、排水バルブ15が開放されると外槽3内に貯留されている水は排水管16を通して機外へと排出される。
【0030】
ドラム6の胴部6aの内周側には主軸7の周囲に120°の回転角度を保って三個の主バッフル20が設けられ、主バッフル20は、ドラム6内の底部に位置するときにその天面が略水平状態になるように(つまり水平線Hと平行であるように)、ドラム6の後面側で高く前面側で低い形状に形成されている。また、主バッフル20の前縁面及び後縁面はそれぞれ斜めになっているが、その天面の角部とドラム6の前面板6b及び後面板6dとの間の距離Lf及びLbは、図1に示すように後面側よりも前面側において広く(つまりLf>Lb)なっている。更にまた、ドラム6の後面板6dの内側には、ちょうど隣接する主バッフル20の中間の回転位置(つまり約60°の角度位置)に、前方に突出する補助バッフル21が設けられている。このような主バッフル20及び補助バッフル21の作用については後述する。
【0031】
図2に示すように、本ドラム式洗濯機では、外槽3の側周面は全体としては円筒形状であるが、その右下部が中心軸線Cを中心とする円(図2中にAで示す円)から外側に膨出してちょうど底部が平面状に形成された形状となっている。この外槽3の膨出部3dに水を加熱するためのシーズヒータであるヒータ30が配設されている。
【0032】
図3はこのヒータの取付構造を示す詳細図であり、(a)は上面図、(b)は側面図である。略U字形状のヒータ30の根元の非発熱部30aにはヒータ保持体31が固定され、先端部はホルダ32で保持されている。ヒータ保持体31は外槽3の後面部3cに水密性を有するシール部材を介して固定され、ヒータ30は外槽3の底部とほぼ平行に傾斜して配設される。
【0033】
洗い運転やすすぎ運転時には外槽3内には少なくともヒータ30全体が浸かる程度の水が貯留され、ヒータ30には外部から加熱電流が供給される。これによって、貯留した水は温水化され、洗剤の溶解が促進される、汚れ落ちが良好になる、等の効果を得ることができる。
【0034】
従来より、ヒータ30の位置は、安全性を確保するために床面50からの離間距離の最低値が決められている。本ドラム式洗濯機のように、外槽3の膨出部3dにヒータ30を設置した場合、外槽3の最底部よりも高い位置にヒータ30がくるので、従来のように外槽3の最底部よりも更に一段窪んだ部分にヒータを設けた場合とは異なり、上述したようにヒータ30と床面50との離間距離を確保するために外槽3全体を嵩上げする必要がなくなる。そのため、洗濯機の全高を低くすることができ、洗濯機の上方空間がすっきりして有効活用ができる。また、外槽3の膨出部3dの下側が平坦になるので、外槽3を安定して外槽固定板17の上に固定することができる。
【0035】
次いで、本ドラム式洗濯機における洗い運転やすすぎ運転時の上記主バッフル20及び補助バッフル21の作用について説明する。
【0036】
洗濯開始前には、使用者がドア2を開き洗濯物をドラム6内に投入する。本ドラム式洗濯機では、ドラム6の開口部6c及び衣類投入口1bが斜め上方を向いているので、使用者は無理な姿勢をとらなくても容易にドラム6内に洗濯物を収容することができる。このとき、使用者がドラム6内の前方に片寄って洗濯物を収容したとしても、洗濯運転が開始されてドラム6が回転駆動されると、ドラム6内の洗濯物は傾斜に沿って徐々に後方側に移動してゆき、ドラム6内の後部に集中する傾向にある。すなわち、洗い運転やすすぎ運転時に(更には乾燥運転時にも)、ドラム6の前方側では洗濯物の数が少なく後方側にたくさんの洗濯物が片寄る。
【0037】
本ドラム式洗濯機では、主バッフル20が後部側で胴部6aの内面からの高さが大きくなっているため、後部側でより多くの洗濯物を上部に掻き上げることができるようになっている。すなわち、上述したようにドラム6の後方側にたくさんの洗濯物が移動してきた場合でも、これらの洗濯物を充分に攪拌することができ、洗いむらやすすぎむら、更には乾燥むらなどをなくすことができる。更に、ドラム6の後面板6dに張り付くように片寄った洗濯物は主バッフル20によっては攪拌されにくいが、後面板6dから前方に突出した補助バッフル21により確実に攪拌される。したがって、ドラム6内に収容された洗濯物全体が充分に攪拌され、洗いむらやすすぎむら、更には乾燥むらなどをなくすことができる。
【0038】
また、ドラム6内の前方側では主バッフル20が低いので、衣類投入口1bから洗濯物を出し入れする際にも主バッフル20が邪魔にならない。また、ドラム6の前方側での距離Lfが後方側での距離Lbよりも広いので、後方側ではこの隙間に洗濯物が入りにくく、したがって、洗濯物を取り出す際にこの隙間に挟まった洗濯物を取り出す手間が軽減できる。
【0039】
このように、第1実施例のドラム式洗濯機では、高い性能とともに使い易さを使用者に供することができる。また、先に述べたように、洗濯機の高さを抑え上部空間を広く使えるほか、上部に窓のある場所などでも窓を隠すことなく設置することが可能となる。
【0040】
次いで、第4発明に係るドラム式洗濯機の一実施例(以下「第2実施例」という)を図4、図5により説明する。上記第1実施例と同一又は相当部分には同一の符号を付し、特に説明を要しない限り説明を省略する。
【0041】
このドラム式洗濯機では、外槽3は膨出部を持たず、その周面はほぼ完全な円筒形状となっている。上記第1実施例と異なる点はヒータ40の形状及びその設置位置である。すなわち、水を加熱するためのヒータ40は図5に示すように円弧形状を有しており、外槽3の底部でその根元が保持された状態で外槽3の後面部3cに沿って立設されている。この場合も、ヒータ40の最上部が、洗い運転やすすぎ運転時に外槽3(つまりドラム6)内に設定される最低の水位Lよりも必ず低くなるようにされている。
【0042】
この第2実施例の構成によっても、外槽3の最底部よりも高い位置にヒータ40がくるので、従来のように外槽3の最底部よりも更に一段窪んだ部分にヒータを設けた場合とは異なり、ヒータ40と床面50との離間距離を確保するために外槽3全体を嵩上げする必要がなくなる。そのため、洗濯機の全高を低くすることができ、洗濯機の上方空間がすっきりして有効活用ができる。また、この構成では、外槽3に第1実施例のように膨出部3dを設ける必要はなく、その分だけ洗いやすすぎ時に外槽3に貯留する水の量が少なくてすむ。勿論、外槽3を安定して外槽固定板17の上に固定するために膨出部を設けても構わない。
【0043】
なお、上記実施例はいずれも本発明の一例であって、本発明の趣旨の範囲で適宜変更や修正を行えることは明らかである。
【図面の簡単な説明】
【図1】 第1〜第3発明の一実施例(第1実施例)によるドラム式洗濯機の側面縦断面図。
【図2】 第1実施例のドラム式洗濯機の要部の正面縦断面図。
【図3】 第1実施例のドラム式洗濯機におけるヒータの取付構造を示す詳細図で、(a)は上面図、(b)は側面図。
【図4】 第4発明の一実施例(第2実施例)によるドラム式洗濯機の側面縦断面図。
【図5】 第2実施例のドラム式洗濯機の要部の正面縦断面図。
【符号の説明】
1…外箱
1a…前面部
1b…衣類投入口
1c…上面部
1d…曲面部
2…ドア
3…外槽
3a…開口部
3c…後面部
3d…膨出部
4…ダンパ
5…シール部材
6…ドラム
6a…胴部
6b…前面板
6c…開口部
6d…後面板
6e…通水穴
7…主軸
8…軸受固定部材
9…軸受
10…モータ
10a…ステータ
10b…ロータ
11…給水部
11a…水道給水ホース
12…洗剤投入部
12a…洗剤容器
12b…注水管
13…注水口
14…排水口
15…排水バルブ
16…排水管
17…外槽固定板
20…主バッフル
21…補助バッフル
30、40…ヒータ
30a…非発熱部
31…ヒータ保持体
32…ホルダ
50…床面
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drum-type washing machine having a drum that rotates about a horizontal axis or an inclined axis. In general, drum-type washing machines are often capable of continuously performing from washing to drying, but the drum-type washing machine referred to here may not be capable of drying.
[0002]
[Prior art]
Conventionally, a drum-type washing machine has a configuration in which a cylindrical bowl-shaped drum is rotatably arranged in an outer tub around a horizontal axis, and the drum is rotated while water is stored in the outer tub. By washing the laundry contained in the drum. In order to put laundry in and out of the drum of such a drum type washing machine, it is necessary to open a side-opening door provided on the front panel of the washing machine, and the user bends under normal installation conditions. It was necessary to take an unreasonable posture such as drooping and bending the waist. On the other hand, in recent years, a drum-type washing machine having a configuration in which the front portion of the drum is inclined obliquely upward so that the laundry can be taken in and out in a more comfortable posture is commercially available.
[0003]
[Problems to be solved by the invention]
Some conventional drum-type washing machines heat the water stored in the outer tub so as to improve the washing performance. For this purpose, the bottom of the outer tub whose cylindrical surface is cylindrical is recessed. The heater is accommodated in the. However, for safety reasons, it is required to secure a predetermined distance or more between the heater and the floor. Therefore, it is necessary to provide the outer tub at a higher position in the outer box. There is a problem that the height of the outer box increases.
[0006]
It is a purpose of the present invention, to provide a drum type washing machine capable of suppressing the height of the outer shape by devising the arrangement and shape of the heater for heating the water reserved in the outer tub is there.
[0007]
[Means for solving the problems and effects]
The present invention, which has been made to solve the above problems, is an outer box, an outer tub installed in the outer box for storing water, a bearing provided in the outer tub, and a rotatable by the bearing. In a drum-type washing machine comprising: a shaft body supported on the drum; and a drum having a substantially cylindrical shape and a rear end surface to which one end of the shaft body is fixed.
The outer peripheral side surface of the outer tub has a cylindrical shape as a whole, but the lower part on one side divided into two on a vertical plane including the central axis of the cylindrical body swells outside the circle drawn by the cylindrical body. Has a protruding bulge,
The lower side of the bulging portion is flat and at the same position as the bottom of the side peripheral surface of the outer tub,
A heater for water heating is disposed in the bulging portion at a position higher than the lowest portion of the side peripheral surface of the outer tub,
Water is stored to such an extent that the heater is immersed in the outer tub during washing operation or rinsing operation, and the stored water is warmed by the heater .
[0016]
According to the drum type washing machine according to the present invention, in the outer box, since bulged portion outwardly from the cylindrical body forming the peripheral surface of the outer tub is positioned at the outermost bottom by Rimoue of the cylindrical body, heaters are also located in the lowermost portion by Rimoue of the cylindrical body. Therefore, in order to keep the space between the floor surface and the heater at a predetermined distance or more, it is not necessary to arrange the outer tub particularly high, and the height of the outer box of the washing machine can be suppressed. Moreover, in this structure, since the bottom part of an outer tank can be made into flat form instead of a curved surface, it can be stably attached in an outer box.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
A drum type washing machine according to an embodiment of the first to third inventions will be described below with reference to the drawings. FIG. 1 is a side longitudinal sectional view showing an overall configuration of a drum type washing machine of the present embodiment (hereinafter referred to as “first embodiment”), and FIG. 2 is a front longitudinal sectional view of a main part of the drum type washing machine.
[0023]
The outer box 1 that forms the outer shape of the drum type washing machine has a front surface portion 1a that faces obliquely upward, and a substantially circular clothing input port 1b is formed on the front surface portion 1a, through which the inside can be seen through. A lateral opening type door 2 is provided. The upper portion of the front surface portion 1a of the outer box 1 continues to the upper surface portion 1c while curving backward, and an operation panel (not shown) and a detergent container 12a that can be pulled out forward are provided on the curved surface portion 1d.
[0024]
Inside the outer box 1, an outer tub 3 having a substantially cylindrical surface (but a part of which is bulged as will be described later) pulls a damper 4 that supports the left and right sides and an upper part. It is held by a spring that does not swing appropriately. The front portion of the outer tub 3 is opened in a circular shape relative to the clothing input port 1b of the outer box 1, and the opening 3a and the clothing input port 1b are connected by a seal member 5 made of an elastic material such as rubber. Has been.
[0025]
Inside the outer tub 3, a drum 6 having a substantially cylindrical surface for accommodating laundry is supported by a main shaft 7. That is, the drum 6 is composed of a cylindrical body portion 6a having a large number of water passage holes 6e, a front plate 6b having a circular opening portion 6c for charging clothes, and a rear surface plate 6d. The face plate 6b, the body portion 6a, and the rear face plate 6d are respectively screwed together after being joined by caulking at flanges that protrude from the front edge portion and the rear edge portion. One end of the main shaft 7 is firmly fixed to the rear portion of the rear plate 6 d of the drum 6 and is rotatably supported by a bearing 9 of a bearing fixing member 8 mounted on the rear surface portion of the outer tub 3.
[0026]
A rotor 10b of a motor 10 which is an outer rotor type DC brushless motor is attached to an end portion of the main shaft 7 protruding rearward of the rear surface portion 3c of the outer tub 3, while a stator 10a of the motor 10 is attached to the bearing fixing member 8. Is fixed. The rotor 10b including the permanent magnet is disposed so as to surround the outer peripheral side of the stator 10a including the winding, and thus the motor 10 has a thin structure in the extending direction of the main shaft 7. When a drive current is supplied to the stator 10a from a control circuit (not shown), the rotor 10b rotates and the drum 6 is rotationally driven via the main shaft 7 at the same rotational speed as the rotor 10b.
[0027]
As apparent from FIG. 1, the outer tub 3 in which the drum 6 is housed rises forward so that the central axis C of the drum 6 (which coincides with the central axis of the main shaft 7) is inclined with respect to the horizontal line H by a predetermined angle θ. It is arranged with an inclination. Here, the inclination angle θ is set to about 5 to 30 °, for example. Although the inclination of the front portion 1a of the outer box 1 is formed according to the inclination of the outer tub 3 and the drum 6, it does not necessarily have to be the same angle.
[0028]
A water supply unit 11 including a water supply valve, a bath water supply pump, and the like is disposed in the upper space in the outer box 1. The water supply unit 11 includes a water supply hose 11 a leading to an external water tap, A bath water supply hose (not shown) or the like leading to a bath tub is detachably connected. In front of the water supply unit 11, there is provided a detergent charging unit 12 in which the detergent container 12 a can be pulled out. Water supplied from the water supply unit 11 to the detergent charging unit 12 is connected to the bottom of the detergent charging unit 12. Through the water injection pipe 12b, the water is supplied from the water injection port 13 provided in front of the outer tank 3 into the outer tank 3. At that time, for example, at the time of water supply in the washing process, powder detergent or liquid detergent previously stored in the detergent container 12a flows out into the water 3 and is supplied into the outer tub 3, for example, at the time of water supply in the final rinse process. A softening finish or the like previously stored in the detergent container 12 a flows out into the water and is supplied into the outer tub 3.
[0029]
When water is supplied from the water supply unit 11 into the outer tub 3 and stored in the outer tub 3, the water flows into the drum 6 through the water passage hole 6e. Further, water discharged from the laundry in the drum 6 at the time of dehydration is scattered to the outer tub 3 side through the water passage hole 6e. A drain outlet 14 is provided behind the bottom of the outer tub 3, and the drain outlet 14 is connected to the inlet of the drain valve 15. When the drain valve 15 is opened, the water stored in the outer tub 3 is It is discharged out of the machine through the drain pipe 16.
[0030]
Three main baffles 20 are provided around the main shaft 7 while maintaining a rotation angle of 120 ° on the inner peripheral side of the drum portion 6 a of the drum 6, and the main baffle 20 is located at the bottom in the drum 6. The top surface of the drum 6 is formed so as to be substantially horizontal (that is, parallel to the horizontal line H) so that the top surface is high and the front surface side is low. The front edge surface and the rear edge surface of the main baffle 20 are slanted. The distances Lf and Lb between the corners of the top surface and the front plate 6b and the rear plate 6d of the drum 6 are shown in FIG. As shown in FIG. 1, it is wider on the front side than the rear side (that is, Lf> Lb). Furthermore, an auxiliary baffle 21 protruding forward is provided inside the rear plate 6d of the drum 6 at an intermediate rotational position (that is, an angular position of about 60 °) between the adjacent main baffles 20. The operation of the main baffle 20 and the auxiliary baffle 21 will be described later.
[0031]
As shown in FIG. 2, in the drum type washing machine, the side peripheral surface of the outer tub 3 is generally cylindrical, but the lower right portion is a circle centered on the central axis C (A in FIG. 2). It has a shape in which the bottom portion is formed in a flat shape by bulging outward from the circle shown). A heater 30, which is a sheathed heater for heating water, is disposed in the bulging portion 3 d of the outer tub 3.
[0032]
3A and 3B are detailed views showing the mounting structure of the heater, in which FIG. 3A is a top view and FIG. 3B is a side view. A heater holder 31 is fixed to the non-heat generating portion 30 a at the base of the substantially U-shaped heater 30, and the tip portion is held by a holder 32. The heater holder 31 is fixed to the rear surface portion 3c of the outer tub 3 via a water-tight seal member, and the heater 30 is disposed so as to be inclined substantially parallel to the bottom of the outer tub 3.
[0033]
At the time of washing operation or rinsing operation, the outer tub 3 stores at least water enough to immerse the entire heater 30, and a heating current is supplied to the heater 30 from the outside. As a result, the stored water can be warmed to promote the dissolution of the detergent, and the effect of removing dirt can be obtained.
[0034]
Conventionally, the minimum value of the separation distance from the floor 50 is determined for the position of the heater 30 in order to ensure safety. When the heater 30 is installed in the bulging portion 3d of the outer tub 3 as in this drum-type washing machine, the heater 30 comes to a position higher than the bottom of the outer tub 3, so that the outer tub 3 Unlike the case where the heater is provided in a portion that is further recessed by one step from the bottom, it is not necessary to raise the entire outer tub 3 in order to secure the separation distance between the heater 30 and the floor surface 50 as described above. Therefore, the overall height of the washing machine can be reduced, and the upper space of the washing machine can be cleaned and effectively used. Further, since the lower side of the bulging portion 3d of the outer tub 3 becomes flat, the outer tub 3 can be stably fixed on the outer tub fixing plate 17.
[0035]
Next, the operation of the main baffle 20 and the auxiliary baffle 21 during the washing operation and the rinsing operation in the drum type washing machine will be described.
[0036]
Before starting washing, the user opens the door 2 and puts the laundry into the drum 6. In the drum type washing machine, the opening 6c and the clothes slot 1b of the drum 6 are directed obliquely upward, so that the user can easily store the laundry in the drum 6 without taking an unreasonable posture. Can do. At this time, even if the user leans forward in the drum 6 and stores the laundry, when the laundry operation is started and the drum 6 is driven to rotate, the laundry in the drum 6 gradually moves along the inclination. It tends to move rearward and concentrate on the rear part in the drum 6. That is, during the washing operation and the rinsing operation (and also during the drying operation), the number of laundry is small on the front side of the drum 6 and a large amount of laundry is shifted to the rear side.
[0037]
In this drum type washing machine, since the main baffle 20 has a height from the inner surface of the body portion 6a on the rear side, more laundry can be scraped upward on the rear side. Yes. That is, even when a large amount of laundry has moved to the rear side of the drum 6 as described above, the laundry can be sufficiently stirred, and washing unevenness, excessive unevenness, and drying unevenness can be eliminated. Can do. Further, the laundry that is offset so as to stick to the rear plate 6d of the drum 6 is not easily stirred by the main baffle 20, but is reliably stirred by the auxiliary baffle 21 protruding forward from the rear plate 6d. Therefore, the entire laundry accommodated in the drum 6 is sufficiently agitated, so that it is possible to eliminate uneven washing, excessive unevenness, and drying unevenness.
[0038]
Further, since the main baffle 20 is low on the front side in the drum 6, the main baffle 20 does not get in the way when the laundry is put in and out of the clothes insertion port 1 b. Further, since the distance Lf on the front side of the drum 6 is larger than the distance Lb on the rear side, it is difficult for the laundry to enter the gap on the rear side. Therefore, the laundry sandwiched between the gaps when the laundry is taken out. The trouble of taking out can be reduced.
[0039]
Thus, the drum type washing machine of the first embodiment can provide the user with high performance and ease of use. In addition, as described above, the height of the washing machine can be reduced and the upper space can be used widely, and it can be installed without hiding the window even in a place with a window on the upper part.
[0040]
Next, an embodiment of a drum-type washing machine according to the fourth invention (hereinafter referred to as “second embodiment”) will be described with reference to FIGS. The same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted unless particularly described.
[0041]
In this drum type washing machine, the outer tub 3 does not have a bulging portion, and its peripheral surface has a substantially complete cylindrical shape. The difference from the first embodiment is the shape of the heater 40 and its installation position. That is, the heater 40 for heating water has an arc shape as shown in FIG. 5, and stands along the rear surface portion 3 c of the outer tub 3 with its root held at the bottom of the outer tub 3. It is installed. Also in this case, the uppermost part of the heater 40 is always set to be lower than the lowest water level L set in the outer tub 3 (that is, the drum 6) during the washing operation or the rinsing operation.
[0042]
Even in the configuration of the second embodiment, since the heater 40 is located at a position higher than the bottom of the outer tub 3, when the heater is provided in a portion that is further recessed from the bottom of the outer tub 3 as in the prior art. Unlike the above, it is not necessary to raise the entire outer tub 3 in order to secure a separation distance between the heater 40 and the floor surface 50. Therefore, the overall height of the washing machine can be reduced, and the upper space of the washing machine can be cleaned and effectively used. Further, in this configuration, it is not necessary to provide the bulging portion 3d in the outer tub 3 as in the first embodiment, and the amount of water stored in the outer tub 3 can be reduced when the basin is easily washed. Of course, a bulging portion may be provided to stably fix the outer tub 3 on the outer tub fixing plate 17.
[0043]
It should be noted that each of the above embodiments is an example of the present invention, and it is obvious that changes and modifications can be made as appropriate within the scope of the gist of the present invention.
[Brief description of the drawings]
FIG. 1 is a side longitudinal sectional view of a drum type washing machine according to one embodiment (first embodiment) of the first to third inventions.
FIG. 2 is a front longitudinal sectional view of an essential part of the drum type washing machine of the first embodiment.
3A and 3B are detailed views showing a heater mounting structure in the drum type washing machine of the first embodiment, wherein FIG. 3A is a top view and FIG. 3B is a side view.
FIG. 4 is a side longitudinal sectional view of a drum type washing machine according to one embodiment (second embodiment) of the fourth invention.
FIG. 5 is a front longitudinal sectional view of an essential part of a drum type washing machine according to a second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Outer box 1a ... Front part 1b ... Clothing inlet 1c ... Upper surface part 1d ... Curved surface part 2 ... Door 3 ... Outer tub 3a ... Opening part 3c ... Rear surface part 3d ... Swelling part 4 ... Damper 5 ... Sealing member 6 ... Drum 6a ... Body 6b ... Front plate 6c ... Opening 6d ... Rear plate 6e ... Water passage hole 7 ... Main shaft 8 ... Bearing fixing member 9 ... Bearing 10 ... Motor 10a ... Stator 10b ... Rotor 11 ... Water supply part 11a ... Water supply Hose 12 ... Detergent input part 12a ... Detergent container 12b ... Water injection pipe 13 ... Water injection port 14 ... Drainage port 15 ... Drainage valve 16 ... Drainage pipe 17 ... Outer tank fixing plate 20 ... Main baffle 21 ... Auxiliary baffles 30, 40 ... Heater 30a ... Non-heating part 31 ... Heater holder 32 ... Holder 50 ... Floor surface

Claims (1)

外箱と、水を貯留するために該外箱内に設置された外槽と、該外槽に設けた軸受と、該軸受により回転自在に支承される軸体と、周面が略円筒形状でその後端面に前記軸体の一端が固着されたドラムと、を備えるドラム式洗濯機において、
前記外槽の側周面は、全体としては円筒体形状であるが、この円筒体の中心軸線を含む垂直平面で2つに分割された片側の下部が円筒体が描く円よりも外側に膨出した膨出部を有しており、
この膨出部の下側は、平坦であり且つ前記外槽の側周面の最底部と同じ位置とされ、
この膨出部内であって前記外槽の側周面の最低部よりも高い位置に水加熱用のヒータが配設され、
洗い運転やすすぎ運転時に前記外槽内に前記ヒータが浸かる程度に水が貯留され、貯留された水が前記ヒータによって温水化される、ことを特徴とするドラム式洗濯機。
An outer box, an outer tub installed in the outer box for storing water, a bearing provided in the outer tub, a shaft body rotatably supported by the bearing, and a peripheral surface of a substantially cylindrical shape In a drum-type washing machine comprising a drum having one end of the shaft fixed to the rear end surface thereof,
The outer peripheral side surface of the outer tub has a cylindrical shape as a whole, but the lower part on one side divided into two on a vertical plane including the central axis of the cylindrical body swells outside the circle drawn by the cylindrical body. Has a protruding bulge,
The lower side of the bulging portion is flat and at the same position as the bottom of the side peripheral surface of the outer tub,
A heater for water heating is disposed in the bulging portion at a position higher than the lowest portion of the side peripheral surface of the outer tub,
A drum-type washing machine characterized in that water is stored to such an extent that the heater is immersed in the outer tub during washing operation or rinsing operation, and the stored water is warmed by the heater .
JP2001122267A 2001-04-20 2001-04-20 Drum washing machine Expired - Fee Related JP3877543B2 (en)

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JP2005000480A (en) * 2003-06-13 2005-01-06 Sharp Corp Washing/drying machine
JP2005083641A (en) * 2003-09-08 2005-03-31 Tanaka Giken Kk Drum structure of heating system
EP1529866A1 (en) * 2003-11-10 2005-05-11 Samsung Electronics Co., Ltd. Drum type washing machine
KR101169268B1 (en) 2004-06-21 2012-08-02 엘지전자 주식회사 tilted drum-type washing machine with pulsator and method for controlling the same
KR101128787B1 (en) * 2004-06-21 2012-03-26 엘지전자 주식회사 tilted drum-type washing machine with pulsator and method for controlling the same
ES2593315T3 (en) 2004-06-21 2016-12-07 Lg Electronics Inc. Inclined drum type washer with push button and procedure to control it
JP4301128B2 (en) * 2004-09-13 2009-07-22 パナソニック株式会社 Drum washing machine
JP4566112B2 (en) * 2005-10-27 2010-10-20 三洋電機株式会社 Clothes dryer
KR100802538B1 (en) * 2006-11-03 2008-02-13 주식회사 대우일렉트로닉스 Washing machine comprising heatinig device
JP2012070808A (en) * 2010-09-28 2012-04-12 Hitachi Appliances Inc Washing/drying machine
JP2012170680A (en) * 2011-02-23 2012-09-10 Panasonic Corp Drum-type washing machine
JP5852934B2 (en) * 2012-07-10 2016-02-03 日立アプライアンス株式会社 Drum-type washing machine and drum-type washing machine
CN103485124A (en) * 2013-09-11 2014-01-01 李懿 Front-loading washing machine
WO2015059824A1 (en) * 2013-10-25 2015-04-30 ハイアールアジアインターナショナル株式会社 Washing machine
JP6667221B2 (en) * 2015-07-22 2020-03-18 東芝ライフスタイル株式会社 Drum type washing machine

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