JP2004350825A - Washing drying machine - Google Patents

Washing drying machine Download PDF

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Publication number
JP2004350825A
JP2004350825A JP2003150628A JP2003150628A JP2004350825A JP 2004350825 A JP2004350825 A JP 2004350825A JP 2003150628 A JP2003150628 A JP 2003150628A JP 2003150628 A JP2003150628 A JP 2003150628A JP 2004350825 A JP2004350825 A JP 2004350825A
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JP
Japan
Prior art keywords
drying
washing
compressor
refrigerant
motor
Prior art date
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JP2003150628A
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Japanese (ja)
Inventor
Hidetaka Yabuuchi
秀隆 藪内
Shigeharu Nakamoto
重陽 中本
Mikio Tawara
己紀夫 田原
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Priority to JP2003150628A priority Critical patent/JP2004350825A/en
Publication of JP2004350825A publication Critical patent/JP2004350825A/en
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  • Drying Of Solid Materials (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To realize a washing and drying machine in which warming-up of a heat pump device is performed efficiently, and drying time is shortened while saving energy consumed. <P>SOLUTION: Control means 45 starts supplying power to a motor of compressor 41 before a dry process begins so that warming-up of the heat pump device is performed efficiently and drying time can be shortened while saving energy consumed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、洗濯・脱水と乾燥を同一回転槽内で行う洗濯乾燥機に関するものである。
【0002】
【従来の技術】
従来のドラム式の洗濯乾燥機は図9に示すような構成であった。以下、その構成について説明する。図に示すように、筐体1の内部には、複数のサスペンション2によって弾性的に支持された円筒状の水槽3を設け、洗濯・脱水時の振動をサスペンション2によって吸収する構成としている。水槽3の内部には、洗濯または乾燥対象物4(以下、衣類という)を収容する円筒状で横軸型の回転槽5を回転可能に配設し、駆動モータ6により回転軸6aを回転させて回転駆動する。
【0003】
回転槽5の内壁には衣類を撹拌する複数のバッフル(図示せず)が設けられ、回転槽5の周壁には小孔5aを多数設けている。筐体1の前面には衣類4を出し入れする開口部1aと、これを開閉する扉7が設けられている。水槽3および回転槽5の前面側にも同様の開口部3a、5bを有し、この水槽3の開口部3aはベローズ8によって筐体1の開口部1aと水密に連結されている。水槽3の底部には洗濯水を排出する排水口9を有し、排水弁10を介して排水ホース11に連結され、その先端部は機外に導出されている。
【0004】
送風機12は、ヒータ13によって加熱された温風を給気口14から回転槽5内に送風供給するものである。循環ダクト15は、回転槽5および水槽3を通過した湿った乾燥用空気の除湿を行うもので、一端を水槽3の下部の排気口16に接続し、他端を送風機12に接続している。17は給水弁で、水道の蛇口等に接続された給水ホース18からの給水を制御する。
【0005】
上記構成において、洗濯運転を行う場合は、扉7を開いて回転槽5内へ衣類4および洗剤を入れて運転を開始する。まず、給水弁17が洗濯水側の給水口を開き、水槽3および回転槽5内に所定量の水が供給されると、駆動モータ6が作動し回転槽5が回転駆動され洗浄動作を行う。所定時間後、駆動モータ6が停止して排水弁10が開き、汚れた水が回転槽5および水槽3から排水され、排水ホース11を介して機外の排水場所へ排水される。次に、上記と同様に水槽3および回転槽5に水が供給され、すすぎ動作を行う。すすぎが終了すると排水弁10が開いて排水された後、回転槽5が駆動モータ6により高速で回転駆動されることにより、衣類4の脱水が行われる。
【0006】
以上のように洗濯運転が終了すると、乾燥運転が開始する。乾燥工程では駆動モータ6により低速で回転槽5を回転駆動させ衣類4を撹拌しながら、送風機12により矢印19の方向に送風された空気は、ヒータ13で加熱されて温風となり、給気口14から回転槽5内へ送り込まれる。この温風は、衣類4の水分を奪った後、回転槽5の小孔5aから水槽3内を通過して排気口16を経て循環ダクト15へ至る。
【0007】
このとき給水弁17が冷却水側の給水口を開いており、循環ダクト15内には冷却水が注水されている。衣類4の水分を奪って湿気を含んだ温風がこの循環ダクト15内を通過するとき、冷却水により冷却されて水分の結露が起こり、湿った温風は除湿されて矢印に示すように再び送風機12へ戻る。この冷却水および結露水は排水弁10を介して機外へ排水される。この送風機12、ヒータ13、給気口14、回転槽5、水槽3、排気口16、循環ダクト15の循環経路で温風を循環させることにより、回転槽5内の衣類4を乾燥させることができる。
【0008】
上記従来の構成では、衣類4の乾燥に使用された熱は、循環ダクト15の冷却水もしくは筐体1からの放熱によって全て外部に捨てられるものであり、再利用されることがなかった。
【0009】
そこで、冷媒を圧縮する圧縮機と、圧縮された冷媒の熱を放熱する放熱器と、高圧の冷媒の圧力を減圧するための絞り手段と、減圧されて低圧となった冷媒が周囲から熱を奪う吸熱器とを冷媒が循環するように管路で連結したヒートポンプ装置を衣類乾燥機に設けることが提案されている(例えば、特許文献1参照)。この構成によれば、外部に放出される熱量を回収し、有効にエネルギーを利用して衣類の乾燥が行えることが分かっている。
【0010】
【特許文献1】
特開平7−178289号公報
【0011】
【発明が解決しようとする課題】
しかしながら、ヒートポンプ装置は、圧縮機、冷媒、熱交換器等の構成要素が多く熱容量が大きいため、通常の電気ヒータと比較すると温度上昇がおそい。したがって、回転槽内へ供給する乾燥用空気が、圧縮機のモータへ通電してから所定の温度のなるまでの時間がかかり、乾燥時間が長くなるという課題を有していた。
【0012】
本発明は、上記従来の課題を解決するもので、ヒートポンプ装置の予熱運転を効率よく行い、消費エネルギーを節約しながら乾燥時間を短縮できる洗濯乾燥機を実現することを目的とする。
【0013】
【課題を解決するための手段】
上記の目的を達成するために、本発明の洗濯乾燥機は、筐体内に弾性支持された水槽内の回転槽へ加熱した空気を供給するヒートポンプ装置および送風手段と、一連の工程を制御する制御手段とを備え、この制御手段が乾燥工程に入る前の工程において、ヒートポンプ装置を構成する圧縮機のモータへの通電を開始させるようにしている。
【0014】
これにより、乾燥工程の前段階に並行してヒートポンプ装置の予熱ができるので、乾燥工程へ入ってからの乾燥用空気の温度上昇が早くなり乾燥時間が短縮できるものである。
【0015】
【発明の実施の形態】
本発明の請求項1に記載の発明は、筐体内に弾性支持された水槽と、前記水槽内に回転可能に設けられ衣類を収容する回転槽と、圧縮機と圧縮された冷媒の熱を放熱する放熱器と高圧の冷媒の圧力を減圧するための絞り手段と減圧されて低圧となった冷媒が周囲から熱を奪う吸熱器とを冷媒が循環するように管路で連結したヒートポンプ装置と、前記放熱器で加熱した空気を前記回転槽内へ供給する送風手段と、洗浄、すすぎ、脱水、乾燥などの一連の工程を制御する制御手段とを具備し、前記制御手段は、乾燥工程に入る前の工程において前記圧縮機のモータへの通電を開始させるものであり、乾燥工程の前段階において並行してヒートポンプ装置の予熱ができ、乾燥工程へ入ってからの乾燥用空気の温度上昇が早くなり乾燥時間が短縮できる。
【0016】
請求項2に記載の発明は、上記請求項1に記載の発明において、制御手段は、乾燥工程に入る前の工程において圧縮機のモータへ通電し前記モータを回転させずに圧縮機の温度を上昇させるようにしたものであり、乾燥工程の前段階に並行して圧縮機の予熱ができ、乾燥工程へ入ってからの乾燥用空気の温度上昇が早くなり乾燥時間が短縮できる。
【0017】
請求項3に記載の発明は、上記請求項1に記載の発明において、制御手段は、乾燥工程に入る前の工程において圧縮機のモータへ通電し前記モータを回転させて冷媒の温度を上昇させるようにしたものであり、乾燥工程の前段階に並行して圧縮機と冷媒および冷媒管路の予熱ができ、乾燥工程へ入ってからの乾燥用空気の温度上昇が早くなり乾燥時間が短縮できる。
【0018】
請求項4に記載の発明は、上記請求項1に記載の発明において、制御手段は、乾燥工程に入る前の工程において圧縮機のモータへ通電し前記モータを回転させて冷媒の温度を上昇させるとともに、送風手段の運転を開始して加熱した空気を回転槽内へ供給するようにしたものであり、乾燥工程の前段階に並行して圧縮機、冷媒および冷媒管路、送風経路の予熱ができ、乾燥工程へ入ってからの乾燥用空気の温度上昇が早くなり乾燥時間が短縮できる。
【0019】
請求項5に記載の発明は、上記請求項1〜4に記載の発明において、制御手段は、乾燥工程直前の脱水工程において圧縮機のモータへの通電を開始するようにしたものであり、乾燥工程の前段階に並行してヒートポンプ装置の予熱ができるとともに、脱水をしながら乾燥も進行するので、乾燥工程へ入ってからの乾燥用空気の温度上昇が早くなり乾燥時間が短縮できる。
【0020】
請求項6に記載の発明は、上記請求項1〜4に記載の発明において、制御手段は、乾燥工程前の洗濯工程において圧縮機のモータへの通電を開始するようにしたものであり、脱水工程の前段階にヒートポンプ装置の予熱ができ脱水工程での乾燥が促進されるので、乾燥工程での乾燥時間がさらに短縮できる。また、洗浄中に衣類の加温が可能になるので、洗浄度の向上と洗浄時間の短縮を図ることもできる。
【0021】
請求項7に記載の発明は、上記請求項1〜6に記載の発明において、ヒートポンプ装置に用いる冷媒は、二酸化炭素(CO2)を主成分としたものであり、ヒートポンプ装置の冷凍サイクルの放熱側で超臨界状態をつくることで、高温の温風が得られるので小型で効率良く衣類を乾燥することができる。
【0022】
【実施例】
以下、本発明の実施例について、図面を参照しながら説明する。なお、従来例と同じ構成のものは同一符号を付して詳細な説明は省略する。
【0023】
(実施例1)
図1〜図5に基づいて第1の実施例について説明する。図1は本実施例の洗濯乾燥機の外観斜視図で、図2は筐体1の背面1b方向から見た断面図を示す。図3は図2のZ−Z線に沿って切断した断面図である。また、図4は本実施例のヒートポンプ装置の構成と乾燥用空気の流れを示すシステム概念図である。
【0024】
図に示すように、筐体1の内部には、複数のサスペンション2によって弾性的に支持された円筒状の水槽3を設け、洗濯・脱水時の振動をサスペンション2によって吸収する。水槽3の内部には、衣類4を収容する円筒状で横軸型の回転槽5を回転可能に設け、駆動モータ6により回転駆動される。筐体1の前面には衣類4を出し入れする開口部1aと、これを開閉する扉7が設けられている。水槽3および回転槽5の前面側にも同様の開口部3a、5bを有し、この水槽3の開口部3aはベローズ8によって筐体1の開口部1aと水密に連結されている。水槽3の底部には洗濯水を排出する排水口9を有し排水弁10に連結されている。
【0025】
12は送風手段を構成する送風機で、筐体1の上面1cと側面1dが成す隅部空間に位置するように、水槽3の上部に設けられている。送風機12は水槽3の外面に設けた給気ダクト20と連通し、給気ダクト20の給気ダクト入口21から入った空気を矢印cの方向に送風して給気口14から回転槽5内に供給する。また、水槽3の外面には、水槽3の背面部の排気口16と連通する排気ダクト22を設け、回転槽5および水槽3を通過して排気口16から出てきた空気を矢印dのように排気ダクト出口23へ導出する。
【0026】
水槽3の下部には、ヒートポンプ装置を構成する熱交換器からなる吸熱器30に矢印aの方向に空気を流す吸熱器風路31と、同様に熱交換器からなる放熱器32に矢印bの方向に空気を流す放熱器風路33とが水平方向に並べて配設され、この吸熱器風路31と放熱器風路33とは循環ダクト34で連通して吸熱器30および放熱器32を通過する空気が直線的に流れるようになっている。
【0027】
この吸熱器風路31と放熱器風路33と循環ダクト34は一体に構成され、筐体1内の取り付けベース35に固定されている。そして、吸熱器風路31の入口と排気ダクト出口23とは蛇腹状の伸縮可能なフレキシブルホース36を介して連通している。放熱器風路33の出口と給気ダクト入口21も同様に蛇腹状の伸縮可能なフレキシブルホース37を介して連通している。また、吸熱器風路31の入口部には、空気中の異物を除去するフィルター手段として合繊ネット等からなるエアフィルター38を着脱可能に設けている。さらに、吸熱器風路31の下流側の下部には、除湿水を排出する排出口39を設けている。
【0028】
このように、送風機12で送風される乾燥用空気は、図4の矢印40に示すように、給気ダクト20を通り給気口14から回転槽5内に入り、回転槽5内の衣類4を通過した後、排気口16から出て、排気ダクト22を通って吸熱器風路31の吸熱器30を通過し、循環ダクト34を介して放熱器風路33の放熱器32を通過して送風機12へ戻り、循環するようになっている。
【0029】
また、ヒートポンプ装置は、圧縮機41、および圧縮された冷媒の熱を放熱する放熱器32、および高圧の冷媒の圧力を減圧するための絞り弁や毛細管等からなる絞り手段42、および減圧されて低圧となった冷媒が周囲から熱を奪う吸熱器30とを冷媒が循環するように管路43で連結されており、冷媒は矢印44の方向に流れて循環し、ヒートポンプサイクルを実現する。この冷媒にはエアコンや冷蔵庫で使用されるフロン系のものを用いても良いが、炭酸ガスを冷媒とすればさらに高温の熱を放出することが可能となり、衣類の乾燥に適する。
【0030】
45は制御手段で、駆動モータ6、送風機12、圧縮機41等と電気的に接続されこれらの動作を制御し、洗浄、すすぎ、脱水、乾燥などの洗濯乾燥機としての一連の工程を制御する。
【0031】
以上のような構成において、次に、本実施例の動作について説明する。洗濯工程では、排水弁10を閉じた状態で水槽3内に所定の水位に達するまで給水を行い、駆動モータ6により衣類4と水の入った回転槽5を回転させて洗浄、すすぎを行う。
【0032】
洗濯工程終了後の脱水工程では、排水弁10を開いて機外へ水を排水した後、駆動モータ6により衣類4の入った回転槽5を高速回転して脱水を行うが、本実施例では図5に示すように、脱水工程に入ると同時に制御手段45は圧縮機41のモータコイルに通電を開始するようになっている。このとき圧縮機41に通電される電流値は定格運転時の1/10以下であり、脱水工程中には圧縮機41は回転せず、圧縮機41の温度を所定温度に保つように制御手段45が制御する。
【0033】
次に、乾燥工程では、制御手段45は圧縮機41と送風機12を回転させる。圧縮機41が回転すると、冷媒が圧縮され、この圧力により冷媒は放熱器31、絞り手段42、吸熱器30を循環する。放熱器32では冷媒の圧縮で熱が放出され、吸熱器30では絞り手段42で減圧されて低圧となった冷媒により熱が吸収される。
【0034】
このとき、圧縮機41はすでに脱水工程中から通電され所定温度に予熱されているので、圧縮加熱された冷媒の熱が圧縮機41に奪われることがなく冷媒の温度上昇が早くなる。送風機12が回転すると、放熱器32の放熱により加熱された温風が給気ダクト20を通って給気口14から回転槽5内に送風される。回転槽5は駆動モータ6により回転駆動され衣類4は上下に撹拌される。
【0035】
回転槽5内に送風された温風は、この衣類4の隙間を通るときに水分を奪い、湿った状態で水槽3の排気口16を経て排気ダクト22、フレキシブルホース36を通り、エアフィルター36を通過してリント等の異物が除去され、吸熱器風路31に至る。この湿った温風は、吸熱器30を通過する際に顕熱と潜熱が奪われて除湿され、乾いた空気と除湿水に分離される。この乾いた空気は、循環ダクト34を通って放熱器風路33に入り、放熱器32で再び加熱され温風となってフレキシブルホース37、給気ダクト20を通り、送風機12へと循環する。
【0036】
一方、吸熱器30で結露した除湿水は、底部の排出口39から機外へ排出される。このようにヒートポンプ装置を用いることにより、吸熱器30で吸熱した熱を冷媒で回収して再び放熱器32で放熱して、圧縮機41に入力したエネルギー以上の熱量を衣類4に与えることができるので、乾燥時間の短縮と省エネを実現することが可能になる。
【0037】
以上のように、脱水工程において制御手段45が圧縮機41のモータコイルに通電を行うことにより、乾燥工程の前段階でヒートポンプ装置の予熱ができるので、乾燥工程へ入ってからの乾燥用空気の温度上昇が早くなり乾燥時間が短縮できるものである。
【0038】
なお、本実施例では脱水工程に入ると同時に制御手段45は圧縮機41のモータコイルに通電を開始するようにしているが、脱水工程の途中から通電を開始しても良く、要は乾燥工程の前段階で圧縮機41の温度を所定温度に保つことができれば同様の効果が得られることは言うまでもない。
【0039】
(実施例2)
次に、第2の実施例の洗濯乾燥機について説明する。構成は実施例1と同様であるが、図6に示すように制御手段45の制御シーケンスのみが実施例1と異なる。
【0040】
本実施例では、制御手段45は脱水工程において圧縮機41の回転を開始するようになっている。このとき送風機12は回転せず冷媒の循環のみを行う。これにより、脱水運転中に並行してヒートポンプ装置の冷媒温度を上昇させ、圧縮機41と冷媒および冷媒管路43の予熱を行った後、乾燥運転を行うものである。
【0041】
このように、脱水工程において制御手段45が圧縮機41のモータを回転させて冷媒の温度を上昇させるもので、乾燥工程の前段階に圧縮機41と冷媒および冷媒管路43の予熱ができ、乾燥工程へ入ってからの乾燥用空気の温度上昇が早くなり乾燥時間が短縮できる。
【0042】
(実施例3)
次に、第3の実施例の洗濯乾燥機について説明する。構成は実施例1と同様であるが、図7に示すように制御手段45の制御シーケンスのみが実施例1と異なる。
【0043】
本実施例では、制御手段45は脱水工程において圧縮機41と送風機12の回転を開始するようになっている。これにより、脱水運転中に並行してヒートポンプ装置の冷媒温度を上昇させ、圧縮機41と冷媒および冷媒管路43の予熱を行うとともに、乾燥用空気とその送風経路の予熱を行った後、乾燥運転を行うものである。
【0044】
このように、脱水工程において制御手段45が圧縮機41のモータを回転させて冷媒の温度を上昇させるとともに、送風機12を回転させて加熱した空気を回転槽5内へ供給することにより、乾燥工程の前段階に圧縮機41、冷媒および冷媒管路43、送風経路の予熱ができ、乾燥工程へ入ってからの乾燥用空気の温度上昇が早くなり乾燥時間が短縮できる。
【0045】
(実施例4)
次に、第4の実施例の洗濯乾燥機について説明する。構成は実施例1と同様であるが、図8に示すように制御手段45の制御シーケンスのみが実施例1と異なる。
【0046】
本実施例では、脱水工程に入る前の洗濯工程後半において制御手段45は圧縮機41のモータコイルに通電を開始し、圧縮機41を回転させずに圧縮機41の温度を所定温度に保つようになっている。洗濯運転中に並行してヒートポンプ装置の予熱を行った後、脱水工程においては圧縮機41と送風機12の回転を開始して、温風を循環させながら脱水運転を行うようになっている。これにより、脱水工程においても乾燥が促進されるとともに、ヒートポンプ装置の冷媒温度を上昇させ、圧縮機41と冷媒および冷媒管路43の予熱を十分に行うことができ、乾燥工程へ入ってからの乾燥時間が大幅に短縮できる。
【0047】
なお、本実施例では洗濯工程後半において圧縮機41のモータコイルにのみ通電しているが、洗濯工程の最初から圧縮機41および送風機12を回転させてヒートポンプ装置を運転しながら洗濯運転を行えば、洗浄中に衣類の加温が可能になるので、洗浄度の向上と洗浄時間の短縮を図ることも可能となる。
【0048】
【発明の効果】
以上のように本発明によれば、ヒートポンプ装置によって回転槽内へ供給する乾燥用空気を加熱する洗濯乾燥機において、ヒートポンプ装置の予熱運転を効率よく行うことにより乾燥時間が短縮できるものである。
【図面の簡単な説明】
【図1】本発明の実施例1の洗濯乾燥機の外観斜視図
【図2】同洗濯乾燥機の要部断面図
【図3】同洗濯乾燥機の要部断面図
【図4】同洗濯乾燥機のシステム概念図
【図5】同洗濯乾燥機の要部動作タイムチャート
【図6】本発明の実施例2の洗濯乾燥機の要部動作タイムチャート
【図7】本発明の実施例3の洗濯乾燥機の要部動作タイムチャート
【図8】本発明の実施例4の洗濯乾燥機の要部動作タイムチャート
【図9】従来の洗濯乾燥機の断面図
【符号の説明】
1 筐体
3 水槽
5 回転槽
12 送風機
30 吸熱器
32 放熱器
41 圧縮機
42 絞り手段
43 管路
45 制御手段
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a washing / drying machine that performs washing / dehydration and drying in the same rotating tub.
[0002]
[Prior art]
A conventional drum type washer-dryer had a configuration as shown in FIG. Hereinafter, the configuration will be described. As shown in the drawing, a cylindrical water tub 3 elastically supported by a plurality of suspensions 2 is provided inside the housing 1, and the vibrations during washing and dehydration are absorbed by the suspension 2. Inside the water tub 3, a cylindrical, horizontal-axis-type rotary tub 5 that accommodates an object 4 to be washed or dried (hereinafter referred to as “clothing”) is rotatably provided, and a rotary shaft 6 a is rotated by a drive motor 6. To rotate.
[0003]
A plurality of baffles (not shown) for stirring clothes are provided on the inner wall of the rotating tub 5, and a number of small holes 5 a are provided on the peripheral wall of the rotating tub 5. An opening 1a through which clothes 4 are put in and out, and a door 7 that opens and closes the opening 1a are provided on the front surface of the housing 1. Similar openings 3a and 5b are also provided on the front side of the water tank 3 and the rotating tank 5, and the opening 3a of the water tank 3 is watertightly connected to the opening 1a of the housing 1 by a bellows 8. The bottom of the water tub 3 has a drain port 9 for discharging washing water, is connected to a drain hose 11 via a drain valve 10, and a tip end thereof is led out of the machine.
[0004]
The blower 12 supplies hot air heated by the heater 13 from the air supply port 14 into the rotary tank 5. The circulation duct 15 is used to dehumidify the wet drying air that has passed through the rotary tank 5 and the water tank 3. One end of the circulation duct 15 is connected to an exhaust port 16 below the water tank 3, and the other end is connected to the blower 12. . A water supply valve 17 controls water supply from a water supply hose 18 connected to a water tap or the like.
[0005]
In the above configuration, when performing the washing operation, the door 7 is opened, the clothes 4 and the detergent are put into the rotating tub 5, and the operation is started. First, the water supply valve 17 opens the water supply port on the washing water side, and when a predetermined amount of water is supplied into the water tub 3 and the rotary tub 5, the drive motor 6 operates to rotate the rotary tub 5 to perform a cleaning operation. . After a predetermined time, the drive motor 6 is stopped, the drain valve 10 is opened, and the contaminated water is drained from the rotary tub 5 and the water tub 3 and drained to a drainage place outside the machine via the drain hose 11. Next, water is supplied to the water tank 3 and the rotary tank 5 in the same manner as described above, and a rinsing operation is performed. When the rinsing is completed, the drain valve 10 is opened and drained, and then the rotating tub 5 is driven to rotate at a high speed by the drive motor 6, whereby the clothes 4 are dehydrated.
[0006]
When the washing operation ends as described above, the drying operation starts. In the drying step, the air blown in the direction of the arrow 19 by the blower 12 is heated by the heater 13 to become hot air while stirring the clothes 4 by rotating the rotary tub 5 at a low speed by the drive motor 6 to become hot air. It is sent into the rotary tank 5 from 14. After the hot air deprives the clothing 4 of moisture, the hot air passes through the small hole 5a of the rotary tank 5 through the water tank 3 and reaches the circulation duct 15 through the exhaust port 16.
[0007]
At this time, the water supply valve 17 opens the water supply port on the cooling water side, and cooling water is injected into the circulation duct 15. When hot air containing moisture is removed from the clothes 4 and passes through the circulation duct 15, the water is cooled by the cooling water to cause dew condensation of the water, and the moist hot air is dehumidified and again as shown by the arrow. Return to the blower 12. The cooling water and the condensed water are drained out of the machine via the drain valve 10. By circulating warm air through the circulation path of the blower 12, the heater 13, the air supply port 14, the rotary tank 5, the water tank 3, the exhaust port 16, and the circulation duct 15, the clothes 4 in the rotary tank 5 can be dried. it can.
[0008]
In the above-described conventional configuration, all the heat used for drying the clothes 4 is discarded to the outside by the cooling water in the circulation duct 15 or the heat radiation from the housing 1 and has not been reused.
[0009]
Therefore, a compressor that compresses the refrigerant, a radiator that radiates the heat of the compressed refrigerant, a throttling unit that reduces the pressure of the high-pressure refrigerant, and the depressurized low-pressure refrigerant transfers heat from the surroundings. It has been proposed to provide a clothes dryer with a heat pump device in which a refrigerant is circulated with a heat absorber to be robbed (see, for example, Patent Document 1). According to this configuration, it is known that the amount of heat released to the outside is recovered, and the clothes can be dried using energy effectively.
[0010]
[Patent Document 1]
JP-A-7-178289
[Problems to be solved by the invention]
However, since the heat pump device has many components such as a compressor, a refrigerant, and a heat exchanger and has a large heat capacity, the temperature rise is slower than that of a normal electric heater. Therefore, there is a problem in that it takes time from when the drying air supplied into the rotary tank is supplied to the motor of the compressor to when the temperature reaches a predetermined temperature, and the drying time becomes longer.
[0012]
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to realize a washing and drying machine capable of efficiently performing a preheating operation of a heat pump device, saving energy consumption and shortening a drying time.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, a washing and drying machine according to the present invention includes a heat pump device and a blowing means for supplying heated air to a rotating tub in a water tub elastically supported in a housing, and a control for controlling a series of processes. Means for starting the energization of the motor of the compressor constituting the heat pump device in a step before the control means enters the drying step.
[0014]
Thereby, the heat pump device can be preheated in parallel with the previous stage of the drying step, so that the temperature of the drying air after entering the drying step rises quickly and the drying time can be shortened.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
The invention according to claim 1 of the present invention is a water tank elastically supported in a housing, a rotating tank rotatably provided in the water tank to store clothes, and radiating heat of the compressor and the compressed refrigerant. A heat pump device in which a radiator and a throttling means for reducing the pressure of the high-pressure refrigerant and a heat sink that decompresses the low-pressure refrigerant and removes heat from the surroundings are connected by a pipeline so that the refrigerant circulates; A blower that supplies air heated by the radiator into the rotary tank, and a controller that controls a series of steps such as washing, rinsing, dehydrating, and drying are provided, and the controller enters a drying step. In the previous step, the energization of the motor of the compressor is started, and the heat pump device can be preheated in parallel with the previous step of the drying step, and the temperature rise of the drying air after entering the drying step is fast. The drying time is shortened That.
[0016]
According to a second aspect of the present invention, in the first aspect of the present invention, the control means energizes the motor of the compressor in a step before the drying step to start the temperature of the compressor without rotating the motor. The compressor can be preheated in parallel with the previous stage of the drying process, and the temperature of the drying air after entering the drying process rises quickly and the drying time can be shortened.
[0017]
According to a third aspect of the present invention, in the first aspect of the present invention, the control unit energizes a motor of the compressor to rotate the motor in a process before the drying process to increase the temperature of the refrigerant. In this way, the compressor, the refrigerant and the refrigerant pipe can be preheated in parallel with the previous stage of the drying process, and the temperature of the drying air rises quickly after entering the drying process, thereby shortening the drying time. .
[0018]
According to a fourth aspect of the present invention, in the first aspect of the present invention, the control unit energizes the motor of the compressor in a process before the drying process to rotate the motor to increase the temperature of the refrigerant. At the same time, the operation of the blowing means is started to supply the heated air into the rotary tank, and the preheating of the compressor, the refrigerant and the refrigerant pipe, the blowing path is performed in parallel with the stage before the drying step. As a result, the temperature rise of the drying air after entering the drying step is quickened, and the drying time can be shortened.
[0019]
According to a fifth aspect of the present invention, in the first to fourth aspects of the present invention, the control means starts energizing the motor of the compressor in a dehydration step immediately before the drying step. The preheating of the heat pump device can be performed in parallel with the previous stage of the process, and the drying proceeds while dehydrating, so that the temperature of the drying air after entering the drying process rises quickly and the drying time can be shortened.
[0020]
According to a sixth aspect of the present invention, in the first to fourth aspects of the present invention, the control means starts energizing a motor of the compressor in a washing step before the drying step. Since the heat pump device can be preheated before the process and the drying in the dehydration process is promoted, the drying time in the drying process can be further reduced. In addition, since the clothes can be heated during the washing, the washing degree can be improved and the washing time can be shortened.
[0021]
According to a seventh aspect of the present invention, in the first to sixth aspects, the refrigerant used for the heat pump device is mainly composed of carbon dioxide (CO 2), and the heat radiation side of the refrigeration cycle of the heat pump device. By creating a supercritical state, high-temperature warm air can be obtained, so that clothes can be dried efficiently with a small size.
[0022]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings. Components having the same configuration as the conventional example are denoted by the same reference numerals, and detailed description is omitted.
[0023]
(Example 1)
A first embodiment will be described with reference to FIGS. FIG. 1 is an external perspective view of the washing and drying machine of the present embodiment, and FIG. 2 is a cross-sectional view of the housing 1 as viewed from the back 1b direction. FIG. 3 is a cross-sectional view taken along the line ZZ of FIG. FIG. 4 is a system conceptual diagram showing the configuration of the heat pump device of the present embodiment and the flow of drying air.
[0024]
As shown in the figure, a cylindrical water tub 3 elastically supported by a plurality of suspensions 2 is provided inside the housing 1, and vibrations during washing and dehydration are absorbed by the suspension 2. Inside the water tank 3, a cylindrical horizontal axis type rotary tank 5 for accommodating the clothes 4 is rotatably provided, and is rotatably driven by a drive motor 6. An opening 1a through which clothes 4 are put in and out, and a door 7 that opens and closes the opening 1a are provided on the front surface of the housing 1. Similar openings 3a and 5b are also provided on the front side of the water tank 3 and the rotating tank 5, and the opening 3a of the water tank 3 is watertightly connected to the opening 1a of the housing 1 by a bellows 8. The bottom of the water tank 3 has a drain port 9 for discharging washing water, and is connected to a drain valve 10.
[0025]
Reference numeral 12 denotes a blower constituting a blower, which is provided above the water tank 3 so as to be located in a corner space formed by the upper surface 1c and the side surface 1d of the housing 1. The blower 12 communicates with an air supply duct 20 provided on the outer surface of the water tank 3, and blows air entering from an air supply duct inlet 21 of the air supply duct 20 in the direction of arrow c to supply air from the air supply port 14 into the rotary tank 5. To supply. Further, on the outer surface of the water tank 3, an exhaust duct 22 communicating with the exhaust port 16 on the back of the water tank 3 is provided, and air that has passed through the rotary tank 5 and the water tank 3 and has come out of the exhaust port 16 as shown by an arrow d. To the exhaust duct outlet 23.
[0026]
At the lower part of the water tank 3, a heat absorber air passage 31 for flowing air in the direction of an arrow a to a heat absorber 30 formed of a heat exchanger constituting a heat pump device, and a radiator 32 similarly formed of a heat exchanger as indicated by an arrow b A radiator air passage 33 for flowing air in the direction is arranged in the horizontal direction. The heat absorber air passage 31 and the radiator air passage 33 communicate with each other through a circulation duct 34 and pass through the heat absorber 30 and the radiator 32. The flowing air flows in a straight line.
[0027]
The heat absorber air passage 31, the heat radiator air passage 33, and the circulation duct 34 are integrally formed, and are fixed to a mounting base 35 in the housing 1. The inlet of the heat absorber air passage 31 and the exhaust duct outlet 23 communicate with each other via a bellows-like extendable flexible hose 36. Similarly, the outlet of the radiator air passage 33 and the inlet 21 of the air supply duct communicate with each other via a bellows-like extendable flexible hose 37. In addition, an air filter 38 made of a synthetic fiber net or the like is detachably provided at the inlet of the heat absorber air passage 31 as a filter means for removing foreign substances in the air. Further, a discharge port 39 for discharging dehumidified water is provided in a lower portion on the downstream side of the heat absorber air passage 31.
[0028]
In this way, the drying air blown by the blower 12 passes through the air supply duct 20 and enters the rotary tank 5 from the air supply port 14 as shown by an arrow 40 in FIG. After passing through the exhaust port 16, passing through the exhaust duct 22, passing through the heat absorber 30 of the heat absorber air path 31, passing through the circulation duct 34, passing through the radiator 32 of the radiator air path 33, It returns to the blower 12 and circulates.
[0029]
Further, the heat pump device includes a compressor 41, a radiator 32 for radiating heat of the compressed refrigerant, a restrictor 42 including a restrictor valve or a capillary tube for reducing the pressure of the high-pressure refrigerant, and The low-pressure refrigerant is connected to the heat absorber 30 that takes away heat from the surroundings via a pipe 43 so that the refrigerant circulates, and the refrigerant flows and circulates in the direction of arrow 44 to realize a heat pump cycle. The refrigerant may be a CFC-based refrigerant used in an air conditioner or a refrigerator. However, if carbon dioxide gas is used as the refrigerant, higher-temperature heat can be released, which is suitable for drying clothes.
[0030]
Reference numeral 45 denotes a control unit which is electrically connected to the drive motor 6, the blower 12, the compressor 41, and the like, controls these operations, and controls a series of steps as a washing / drying machine such as washing, rinsing, dehydrating, and drying. .
[0031]
Next, the operation of this embodiment having the above configuration will be described. In the washing step, water is supplied into the water tub 3 with the drain valve 10 closed until a predetermined water level is reached, and the drive motor 6 rotates the rotary tub 5 containing the clothes 4 and water for washing and rinsing.
[0032]
In the dehydrating step after the washing step, the drain valve 10 is opened to drain the water outside the machine, and then the rotating tub 5 containing the clothes 4 is rotated at a high speed by the drive motor 6 to perform dehydration. As shown in FIG. 5, the control means 45 starts energizing the motor coil of the compressor 41 at the same time as the dehydration step is started. At this time, the value of the current supplied to the compressor 41 is 1/10 or less of the rated operation, and the control means is configured to keep the temperature of the compressor 41 at a predetermined temperature without rotating the compressor 41 during the dewatering process. 45 controls.
[0033]
Next, in the drying step, the control unit 45 rotates the compressor 41 and the blower 12. When the compressor 41 rotates, the refrigerant is compressed, and the refrigerant circulates through the radiator 31, the throttle means 42, and the heat absorber 30 by this pressure. In the radiator 32, heat is released by the compression of the refrigerant, and in the heat absorber 30, the heat is absorbed by the low-pressure refrigerant which has been decompressed by the throttle means 42.
[0034]
At this time, since the compressor 41 is already energized during the dehydration step and is preheated to a predetermined temperature, the heat of the refrigerant that has been compressed and heated is not taken away by the compressor 41, and the temperature of the refrigerant rises faster. When the blower 12 rotates, warm air heated by heat radiation of the radiator 32 is blown into the rotary tank 5 from the air supply port 14 through the air supply duct 20. The rotating tank 5 is driven to rotate by a drive motor 6, and the clothes 4 are stirred up and down.
[0035]
The warm air blown into the rotary tank 5 deprives the moisture when passing through the gap between the clothes 4, passes through the exhaust port 16 of the water tank 3 in the wet state, passes through the exhaust duct 22, the flexible hose 36, and passes through the air filter 36. Then, foreign matter such as lint is removed, and reaches the heat absorber air passage 31. When passing through the heat absorber 30, the moist hot air is deprived of sensible heat and latent heat and dehumidified, and is separated into dry air and dehumidified water. The dried air enters the radiator air passage 33 through the circulation duct 34, is heated again by the radiator 32, becomes warm air, passes through the flexible hose 37 and the air supply duct 20, and circulates to the blower 12.
[0036]
On the other hand, the dehumidified water condensed in the heat absorber 30 is discharged from the bottom through a discharge port 39 to the outside of the apparatus. By using the heat pump device in this manner, the heat absorbed by the heat absorber 30 is recovered by the refrigerant, and the heat is radiated again by the radiator 32, so that the clothing 4 can be given a heat amount equal to or more than the energy input to the compressor 41. Therefore, it is possible to shorten the drying time and realize energy saving.
[0037]
As described above, in the dehydration step, the control unit 45 energizes the motor coil of the compressor 41, so that the heat pump device can be preheated before the drying step. The temperature rises quickly and the drying time can be shortened.
[0038]
In this embodiment, the controller 45 starts energizing the motor coil of the compressor 41 at the same time as the dehydrating step is started. However, the energizing may be started during the dehydrating step. Needless to say, the same effect can be obtained if the temperature of the compressor 41 can be maintained at a predetermined temperature in the preceding stage.
[0039]
(Example 2)
Next, a washing / drying machine according to a second embodiment will be described. The configuration is the same as that of the first embodiment, but only the control sequence of the control unit 45 is different from that of the first embodiment as shown in FIG.
[0040]
In the present embodiment, the control means 45 starts the rotation of the compressor 41 in the dewatering step. At this time, the blower 12 does not rotate but only circulates the refrigerant. Thus, the temperature of the refrigerant of the heat pump device is increased in parallel with the dehydration operation, and after the compressor 41, the refrigerant and the refrigerant pipe 43 are preheated, the drying operation is performed.
[0041]
As described above, in the dehydration step, the control unit 45 rotates the motor of the compressor 41 to increase the temperature of the refrigerant, so that the compressor 41, the refrigerant, and the refrigerant pipe 43 can be preheated before the drying step, The temperature rise of the drying air after entering the drying step is quickened, and the drying time can be shortened.
[0042]
(Example 3)
Next, a washing / drying machine according to a third embodiment will be described. The configuration is the same as that of the first embodiment, but only the control sequence of the control unit 45 is different from that of the first embodiment as shown in FIG.
[0043]
In the present embodiment, the control means 45 starts the rotation of the compressor 41 and the blower 12 in the dewatering step. As a result, the refrigerant temperature of the heat pump device is increased in parallel with the dehydration operation, and the compressor 41, the refrigerant, and the refrigerant pipe 43 are preheated, and the drying air and its blowing path are preheated. It is for driving.
[0044]
As described above, in the dehydration step, the control means 45 rotates the motor of the compressor 41 to raise the temperature of the refrigerant, and also rotates the blower 12 to supply heated air into the rotary tank 5, whereby the drying step is performed. In the preceding stage, the compressor 41, the refrigerant and the refrigerant pipe 43, and the air supply path can be preheated, and the temperature rise of the drying air after entering the drying step becomes faster, and the drying time can be shortened.
[0045]
(Example 4)
Next, a washing / drying machine according to a fourth embodiment will be described. The configuration is the same as that of the first embodiment, but only the control sequence of the control unit 45 is different from that of the first embodiment as shown in FIG.
[0046]
In the present embodiment, in the latter half of the washing step before the dehydration step, the control means 45 starts energizing the motor coil of the compressor 41, and keeps the temperature of the compressor 41 at a predetermined temperature without rotating the compressor 41. It has become. After the preheating of the heat pump device is performed in parallel with the washing operation, the rotation of the compressor 41 and the blower 12 is started in the dehydration step, and the dehydration operation is performed while circulating warm air. Thereby, in the dehydration step, drying is promoted, and the refrigerant temperature of the heat pump device is increased, and the compressor 41, the refrigerant, and the refrigerant pipe 43 can be sufficiently preheated. The drying time can be greatly reduced.
[0047]
In this embodiment, only the motor coil of the compressor 41 is energized in the latter half of the washing process. However, if the washing operation is performed while the heat pump device is operated by rotating the compressor 41 and the blower 12 from the beginning of the washing process. Since the clothes can be heated during washing, it is possible to improve the washing degree and shorten the washing time.
[0048]
【The invention's effect】
As described above, according to the present invention, the drying time can be reduced by efficiently performing the preheating operation of the heat pump device in the washing and drying machine that heats the drying air supplied into the rotating tub by the heat pump device.
[Brief description of the drawings]
1 is an external perspective view of a washing / drying machine according to a first embodiment of the present invention; FIG. 2 is a sectional view of a principal part of the washing / drying machine; FIG. 3 is a sectional view of a principal part of the washing / drying machine; FIG. 5 is a conceptual diagram of the operation of the main part of the washing / drying machine. FIG. 6 is an operation time chart of the main part of the washing / drying machine according to the second embodiment of the present invention. 8 is an operation time chart of main parts of the washer / dryer of FIG. 8. FIG. 8 is an operation time chart of main parts of the washer / dryer of Embodiment 4 of the present invention. FIG. 9 is a sectional view of a conventional washer / dryer.
DESCRIPTION OF SYMBOLS 1 Case 3 Water tank 5 Rotating tank 12 Blower 30 Heat sink 32 Heat radiator 41 Compressor 42 Throttling means 43 Pipe line 45 Control means

Claims (7)

筐体内に弾性支持された水槽と、前記水槽内に回転可能に設けられ衣類を収容する回転槽と、圧縮機と圧縮された冷媒の熱を放熱する放熱器と高圧の冷媒の圧力を減圧するための絞り手段と減圧されて低圧となった冷媒が周囲から熱を奪う吸熱器とを冷媒が循環するように管路で連結したヒートポンプ装置と、前記放熱器で加熱した空気を前記回転槽内へ供給する送風手段と、洗浄、すすぎ、脱水、乾燥などの一連の工程を制御する制御手段とを具備し、前記制御手段は、乾燥工程に入る前の工程において前記圧縮機のモータへの通電を開始させる洗濯乾燥機。A water tank resiliently supported in the housing, a rotating tank rotatably provided in the water tank to accommodate clothes, a compressor and a radiator for radiating heat of the compressed refrigerant, and reducing the pressure of the high-pressure refrigerant. A heat pump device connected by a conduit so that the refrigerant circulates through a throttling means and a heat sink that decompresses the low-pressure refrigerant and removes heat from the surroundings; and heats the air heated by the radiator into the rotary tank. Air supply means, and control means for controlling a series of steps such as washing, rinsing, dehydration, and drying. The control means supplies power to the motor of the compressor in a step before the drying step. Start the washer-dryer. 制御手段は、乾燥工程に入る前の工程において圧縮機のモータへ通電し前記モータを回転させずに圧縮機の温度を上昇させるようにした請求項1記載の洗濯乾燥機。The washing / drying machine according to claim 1, wherein the control means energizes the motor of the compressor in a step before the drying step to increase the temperature of the compressor without rotating the motor. 制御手段は、乾燥工程に入る前の工程において圧縮機のモータへ通電し前記モータを回転させて冷媒の温度を上昇させるようにした請求項1記載の洗濯乾燥機。The washing / drying machine according to claim 1, wherein the control means supplies electricity to a motor of the compressor in a step before the drying step to rotate the motor to increase the temperature of the refrigerant. 制御手段は、乾燥工程に入る前の工程において圧縮機のモータへ通電し前記モータを回転させて冷媒の温度を上昇させるとともに、送風手段の運転を開始して加熱した空気を回転槽内へ供給するようにした請求項1記載の洗濯乾燥機。The control means supplies electricity to the motor of the compressor in a step before the drying step to rotate the motor to raise the temperature of the refrigerant, and starts the operation of the blowing means to supply heated air into the rotary tank. The washing and drying machine according to claim 1, wherein the washing and drying is performed. 制御手段は、乾燥工程直前の脱水工程において圧縮機のモータへの通電を開始するようにした請求項1〜4のいずれか1項に記載の洗濯乾燥機。The washing and drying machine according to any one of claims 1 to 4, wherein the control means starts energization of a motor of the compressor in a dehydration step immediately before the drying step. 制御手段は、乾燥工程前の洗濯工程において圧縮機のモータへの通電を開始するようにした請求項1〜4に記載の洗濯乾燥機。The washing / drying machine according to any one of claims 1 to 4, wherein the control means starts energization of a motor of the compressor in a washing step before the drying step. ヒートポンプ装置に用いる冷媒は、二酸化炭素(CO2)を主成分とした請求項1〜6のいずれか1項に記載の洗濯乾燥機。The washing / drying machine according to any one of claims 1 to 6, wherein the refrigerant used in the heat pump device mainly contains carbon dioxide (CO2).
JP2003150628A 2003-05-28 2003-05-28 Washing drying machine Pending JP2004350825A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006296449A (en) * 2005-04-15 2006-11-02 Matsushita Electric Ind Co Ltd Washing and drying machine
KR100741798B1 (en) * 2004-12-30 2007-07-25 엘지전자 주식회사 Washing machine with a integrated drier
JP2007330674A (en) * 2006-06-19 2007-12-27 Toshiba Corp Washing-drying machine
KR101337730B1 (en) * 2011-06-07 2013-12-06 위니아만도 주식회사 Method of controlling for Dryer
JP2014042695A (en) * 2012-08-28 2014-03-13 Panasonic Corp Washing and drying machine
JP2014094202A (en) * 2012-11-12 2014-05-22 Panasonic Corp Washing and drying machine
JP2014104264A (en) * 2012-11-29 2014-06-09 Toshiba Corp Washing and drying machine
JP2016047147A (en) * 2014-08-27 2016-04-07 シャープ株式会社 Washing and drying machine

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JPH01212599A (en) * 1988-02-22 1989-08-25 Mitsubishi Heavy Ind Ltd Washer-dryer
JPH0357490A (en) * 1989-07-26 1991-03-12 Sharp Corp Drum type washing and drying machine
JPH08299696A (en) * 1995-05-12 1996-11-19 Toshiba Corp Washing/drying machine
JPH1085497A (en) * 1996-09-13 1998-04-07 Toshiba Corp Washing and drying machine
JP2000325694A (en) * 1999-05-19 2000-11-28 Sharp Corp Drum type washing machine
JP2001293280A (en) * 2000-04-12 2001-10-23 Matsushita Electric Ind Co Ltd Washing and drying machine

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Publication number Priority date Publication date Assignee Title
JPH01212599A (en) * 1988-02-22 1989-08-25 Mitsubishi Heavy Ind Ltd Washer-dryer
JPH0357490A (en) * 1989-07-26 1991-03-12 Sharp Corp Drum type washing and drying machine
JPH08299696A (en) * 1995-05-12 1996-11-19 Toshiba Corp Washing/drying machine
JPH1085497A (en) * 1996-09-13 1998-04-07 Toshiba Corp Washing and drying machine
JP2000325694A (en) * 1999-05-19 2000-11-28 Sharp Corp Drum type washing machine
JP2001293280A (en) * 2000-04-12 2001-10-23 Matsushita Electric Ind Co Ltd Washing and drying machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100741798B1 (en) * 2004-12-30 2007-07-25 엘지전자 주식회사 Washing machine with a integrated drier
JP2006296449A (en) * 2005-04-15 2006-11-02 Matsushita Electric Ind Co Ltd Washing and drying machine
JP4507966B2 (en) * 2005-04-15 2010-07-21 パナソニック株式会社 Washing and drying machine
JP2007330674A (en) * 2006-06-19 2007-12-27 Toshiba Corp Washing-drying machine
KR101337730B1 (en) * 2011-06-07 2013-12-06 위니아만도 주식회사 Method of controlling for Dryer
JP2014042695A (en) * 2012-08-28 2014-03-13 Panasonic Corp Washing and drying machine
JP2014094202A (en) * 2012-11-12 2014-05-22 Panasonic Corp Washing and drying machine
JP2014104264A (en) * 2012-11-29 2014-06-09 Toshiba Corp Washing and drying machine
JP2016047147A (en) * 2014-08-27 2016-04-07 シャープ株式会社 Washing and drying machine

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