JP4103249B2 - Washing machine - Google Patents

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JP4103249B2
JP4103249B2 JP16639199A JP16639199A JP4103249B2 JP 4103249 B2 JP4103249 B2 JP 4103249B2 JP 16639199 A JP16639199 A JP 16639199A JP 16639199 A JP16639199 A JP 16639199A JP 4103249 B2 JP4103249 B2 JP 4103249B2
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Japan
Prior art keywords
washing
water
dewatering
water level
tank
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JP2000350884A (en
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長 川崎
正一 松井
久 萩原
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、洗濯兼脱水槽を回転させて遠心力で水を上方に持ち上げて洗濯兼脱水槽内に散水する洗いもしくはすすぎ行程を有し、洗い、すすぎ、脱水の一連の行程を逐次制御する洗濯機に関するものである。
【0002】
【従来の技術】
従来、この種の洗濯機は、図9および図10に示すように構成していた。以下、その構成について説明する。
【0003】
図9に示すように、外装体1は支持板2に支持された水受け槽3をサスペンション4で弾性支持している。水受け槽3は中央底部に回転自在にパルセータ5を配設した洗濯兼脱水槽6を内包している。洗濯兼脱水槽6は内周面に複数の貫通した穴6aを形設している。
【0004】
クラッチ機構部7は、支持板2の外底部に装着しており、同心2重軸に形成された洗濯兼脱水槽6に連結している脱水軸8とパルセータ5に固着した洗濯軸9とを支持し、Vベルト10で伝達されるモータ(駆動手段)11の動力をクラッチ切り換え用ソレノイド12の励磁(オン)/無励磁(オフ)により、脱水軸8、洗濯軸9に切り換えて伝達するようにしており、クラッチ切り換え用ソレノイド12を励磁(オン)状態にすると、脱水軸8にモータ11の動力が伝達され、さらに脱水軸8を固定するブレーキ機構が解除され、洗濯兼脱水槽6の回転が可能となり、遠心力による洗いまたはすすぎ、もしくは脱水運転が行える状態にする。
【0005】
排水電磁弁13は排水コック14を開閉するもので、無励磁(オフ)により排水コック14を閉止して、洗い、すすぎが行える状態にする。給水弁15は洗濯兼脱水槽6に給水する。
【0006】
制御装置16は、図10に示すように、制御手段17、パワースイッチング手段18、布量検知手段19、回転検知手段20、水位検知手段21、操作表示手段22などで構成し、制御手段17の指令によりパワースイッチング手段18を制御することで、モータ11、クラッチ切り換え用ソレノイド12、排水電磁弁13、給水弁15を制御して、洗い、すすぎ、脱水の一連の行程を逐次制御するようにしている。なお、23、24はモータ11の進相用のコンデンサである。
【0007】
制御手段17は、洗い行程およびすすぎ行程において、パルセータ5を回転駆動させる攪拌行程、および洗濯兼脱水槽6を回転させて遠心力で水を上方に持ち上げて洗濯兼脱水槽6内に散水する槽回転行程を有しており、それぞれの行程でのモータ11の負荷量、すなわち洗濯物の量や洗濯水位に応じて、進相用のコンデンサ23、24の併用もしくは単独使用を切り換えるようにしている。
【0008】
上記構成において洗濯時の動作を説明する。洗濯兼脱水槽6内に洗濯物を投入し、運転を開始すると、制御手段17はモータ11を所定時間オン、オフさせ、パルセータ5を正逆の反転駆動させ、パルセータ5に加わる摩擦抵抗によるモータ11オフ時のコンデンサ23の端子間に生じる逆起電力を、布量検知手段19によりパルス換算して布量判定を行い、操作表示手段22にて判定した布量に対する洗剤量と水位を表示する。
【0009】
つぎに、判定した布量に応じて給水弁15をオンして自動給水し、所定水位に達すると給水弁15をオフし、パルセータ5を回転駆動させる攪拌行程および、洗濯兼脱水槽6を回転させて遠心力で水を上方に持ち上げて洗濯兼脱水槽6内に散水する槽回転行程を適宜組み合わせて、洗濯行程を実行する。
【0010】
槽回転行程では、洗濯物の量が変わっても均一な散水量を確保するよう回転検知手段20により洗濯兼脱水槽6の回転数を検知し、パワースイッチング手段18を制御することで、洗濯兼脱水槽6の回転数が一定になるようにしている。
【0011】
槽回転行程での洗濯兼脱水槽6の回転数変化の一例を図11に示す。例えば、中水位設定(水柱280mm)の場合、160r/minの目標回転数設定で、時間Tの間に一旦休止を挟み、2山を構成しており、モータ11をオン/オフもしくは位相制御等により通電比率を制御したり、進相用のコンデンサ23、24の併用もしくは単独使用を切り換えるようにし、この時間Tのサイクルを繰り返すようにしている。
【0012】
【発明が解決しようとする課題】
このような従来の構成では、運転開始以前にバケツや給水ポンプ等により、使用者が洗濯兼脱水槽6内に水を所定水位より高い水位まで給水し、運転を開始した場合には、制御手段17は、設定可能な水位の内の上限水位での設定回転数により槽回転行程での洗濯兼脱水槽6の回転数制御を行うため、洗濯兼脱水槽6の回転数が設定値まで上昇すると、洗濯兼脱水槽6の上部から溢水してしまう可能性がある
【0013】
本発明は上記課題を解決するもので、運転開始以前に洗濯兼脱水槽内に設定可能な最高水位より多くの水があった場合に、洗い行程において洗濯兼脱水槽を回転駆動する際の溢水の発生を防止することを目的としている
【0014】

【課題を解決するための手段】
本発明は上記目的を達成するために、洗濯物を収容し中央底部にパルセータを回転自在に配設した洗濯兼脱水槽を外槽内に回転自在に収容し、洗濯兼脱水槽内の水位を水位検知手段により検知し、洗濯兼脱水槽またはパルセータを駆動手段により回転駆動し洗濯兼脱水槽の回転数を回転検知手段により検知し、制御手段は、洗い、すすぎ、脱水の一連の行程を逐次制御するとともに、洗い行程において、パルセータを回転駆動させる攪拌行程 と、洗濯兼脱水槽を回転させて遠心力で水を上方に持ち上げて洗濯兼脱水槽内に散水する槽回転行程とを実行可能とし、洗い行程の運転開始時の給水開始前に洗濯兼脱水槽内に設定可能な最高水位より多くの水があった場合、給水を行うことなく洗い行程を実行するようにし、槽回転行程において洗濯兼脱水槽回転数を設定可能な最高水位における洗濯兼脱水槽の回転数よりも低い値になるように変更するようにしたものである。
【0015】
これにより、洗い行程において洗濯兼脱水槽を回転駆動する際の溢水の発生を防止することができる
【0016】

【発明の実施の形態】
本発明の請求項1に記載の発明は、洗濯物を収容する洗濯兼脱水槽と、前記洗濯兼脱水槽の中央底部に回転自在に配設されたパルセータと、前記洗濯兼脱水槽を回転自在に収容した外槽と、前記洗濯兼脱水槽または前記パルセータを回転駆動する駆動手段と、前記洗濯兼脱水槽内に給水する給水弁と、前記洗濯兼脱水槽の回転数を検知する回転検知手段と、前記洗濯兼脱水槽内の水位を検知する水位検知手段と、洗い、すすぎ、脱水の一連の行程を逐次制御する制御手段とを備え、前記制御手段は、前記洗い行程において、前記パルセータを回転駆動させる攪拌行程と、前記洗濯兼脱水槽を回転させて遠心力で水を上方に持ち上げて前記洗濯兼脱水槽内に散水する槽回転行程とを実行可能とし、前記洗い行程の運転開始時の給水開始前に前記洗濯兼脱水槽内に前記槽回転行程における設定可能な最高水位より多くの水があった場合、給水を行うことなく前記洗い行程を実行するようにし、前記槽回転行程において前記洗濯兼脱水槽回転数を、前記設定可能な最高水位における前記洗濯兼脱水槽の回転数よりも低い値になるように変更するようにしたものであり、使用者が、バケツや給水ポンプ等により、洗濯兼脱水槽内に水を最高水位より高い水位まで給水した場合のように、洗い行程の運転開始時の給水開始前に洗濯兼脱水槽内に設定可能な最高水位より多くの水があった場合に、槽回転行程において洗濯兼脱水槽回転数を低くすることにより、洗濯兼脱水槽を回転駆動する際の溢水の発生を防止することができる。
【0017】
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、洗濯兼脱水槽内の洗濯物の量を検知する布量検知手段を備え、制御手段は、洗い行程の運転開始時の給水開始前に前記洗濯兼脱水槽内に設定可能な最高水位より多くの水があった場合、給水を行うことなく前記洗い行程を実行するようにし、前記槽回転行程において、前記洗濯兼脱水槽回転数を、前記布量検知手段により検知した洗濯物の量が少ないほど低い値になるように変更するようにしたものであり、洗濯物の量に基づいて回転数の下げ方を変えることにより、洗濯水が循環する際に、洗濯物の量が多いほど抵抗が大きくなるので、洗濯兼脱水槽内に散水される洗濯水の量が少なくなり、溢水の発生を防止することができる
【0018】

【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、同一符号を付して説明を省略する。
【0019】
(実施例1)
図1および図2に示すように、制御装置25は、マイクロコンピュータで構成した制御手段26を有し、この制御手段26は、洗い、すすぎ、脱水等の一連の行程を逐次制御するとともに、運転開始以前に、洗濯兼脱水槽6内に設定可能な最高水位以上の水があった場合、洗い行程において洗濯兼脱水槽6を回転させて遠心力で水を上方に持ち上げて洗濯兼脱水槽6内に散水する際の回転数を設定可能な最高水位における回転数よりも低い値に変更するようにしている。
【0020】
上記構成において、図3のフローチャートを参照しながら動作を説明すると、ステップ41で操作表示手段22のスタートスイッチ(図示せず)をオンして運転をスタートすると、制御手段26は、ステップ42で、水位検知手段21の出力により洗濯兼脱水槽6内に設定可能な最高水位L1以上の水があるか否か判定する。
【0021】
設定可能な最高水位L1以上の水がある場合には、ステップ43で洗濯兼脱水槽6を回転駆動する際の回転数を設定可能な最高水位における回転数(たとえば160r/min)よりも低い値(たとえば90r/min)に変更する。ステップ42で設定可能な最高水位L1以上の水がない場合には、ステップ44で給水弁15を制御し設定水位まで給水する。
【0022】
つぎに、ステップ45では設定回転数に従って回転検知手段20により検知した結果を用いて、モータ11をオン/オフもしくは位相制御等により通電比率を制御したり、進相用のコンデンサ23、24の併用もしくは単独使用を切り換えるようにすることで、洗濯兼脱水槽6を回転制御し、遠心力で水を上方に持ち上げて洗濯兼脱水槽6内に散水する洗い行程を実行する。
【0023】
このときの洗濯兼脱水槽6の回転数変化の一例を図4に示す。洗い行程において、洗濯兼脱水槽6を回転駆動する際の設定可能な最高水位は、中水位(水柱280mm)である。運転開始時に中水位(設定可能な最高水位)まで水がない場合には、160r/minの目標回転数設定で運転を行うが、中水位(設定可能な最高水位)以上水がある場合には、90r/minまで目標回転数設定を下げて運転を行い、洗濯兼脱水槽6の上部からの溢水を防止する。
【0024】
なお、本実施例では、モータ11の回転数制御をオン/オフまたは位相制御によるものとしているが、インバータ等を用いることも可能であり、これに限定するものではない。
【0025】
(実施例2)
図1に示す制御手段26は、洗い、すすぎ、脱水等の一連の行程を逐次制御するとともに、設定可能な最高水位まで給水後に所定時間パルセータ5を反転駆動し、そのときの布量検知手段19の出力から、洗濯兼脱水槽6内に投入した洗濯物の量を検知するように構成している。
【0026】
また、制御手段26は、運転開始以前に洗濯兼脱水槽6内に設定可能な最高水位以上の水があった場合、洗い行程において洗濯兼脱水槽6を回転駆動する際の回転数を、検知した洗濯物の量に基づいて、設定可能な最高水位における回転数よりも低い値に変更するようにしている。他の構成は上記実施例1と同じである。
【0027】
上記構成において、図5のフローチャートを参照しながら動作を説明すると、ステップ51で操作表示手段22のスタートスイッチ(図示せず)をオンして運転をスタートすると、制御手段26は、ステップ52で、水位検知手段21の出力により洗濯兼脱水槽6内に設定可能な最高水位L1以上の水があるか否か判定する。
【0028】
設定可能な最高水位L1以上の水がある場合には、ステップ53で所定時間パルセータ5を反転駆動し、そのときの布量検知手段19の出力から洗濯物の量を検知する布量検知を行い、ステップ54で検知した布量に応じて、洗濯兼脱水槽6の設定回転数を設定可能な最高水位における回転数(たとえば160r/min)より(表1)に示すように変更する。
【0029】
【表1】

Figure 0004103249
【0030】
ステップ52で設定可能な最高水位L1以上の水がない場合には、ステップ55で給水弁15を制御して設定水位まで給水し、ステップ56で所定時間パルセータ5を反転駆動し、そのときの布量検知手段19の出力から洗濯物の量を検知する布量検知を行なう。
【0031】
つぎに、ステップ56では、設定回転数に従って回転検知手段20により検知した結果を用いて、モータ11をオン/オフもしくは位相制御等により通電比率を制御することで、洗濯兼脱水槽6を回転制御し、遠心力で水を上方に持ち上げて洗濯兼脱水槽6内に散水する洗い行程を実行する。
【0032】
本実施例では、洗濯開始時に洗濯兼脱水槽6内に設定可能な最高水位以上水がある場合に、検知した布量に応じて、設定回転数を変えているが、これは同じ水位で洗濯兼脱水槽6の回転を行った場合、洗濯物の量が多い程同じ回転数でも、洗濯兼脱水槽6内に散水する水の量が少なく、洗濯兼脱水槽6の上部からの溢水をしにくにいためである。
【0033】
このように、運転開始以前に洗濯兼脱水槽6内に設定可能な最高水位以上の水があった場合、洗い行程において洗濯兼脱水槽6を回転駆動する際の回転数を、検知した洗濯物の量に基づいて、設定可能な最高水位における回転数よりも低い値に変更するので、洗い行程において洗濯兼脱水槽を回転駆動する際に、洗濯物の量に応じてより細かく回転数を制御しつつ、溢水の発生を防止することができる。
【0034】
(実施例3)
図1に示す制御手段26は、洗い、すすぎ、脱水等の一連の行程を制御するとともに、運転開始時に設定可能な最高水位L1以上水があった場合に、設定可能な最高水位L1まで排水後に運転を開始するように構成している。他の構成は上記実施例1と同じである。
【0035】
上記構成において、図6のフローチャートを参照しながら動作を説明すると、ステップ61で操作表示手段22のスタートスイッチ(図示せず)をオンして運転をスタートすると、制御手段26は、ステップ62で、水位検知手段21の出力により洗濯兼脱水槽6内に設定可能な最高水位L1以上の水があるか否か判定する。
【0036】
設定可能な最高水位L1以上の水がある場合には、ステップ63で排水弁13を制御し、設定可能な最高水位L1まで排水し、ステップ64で次行程へ移行する。ステップ62で設定可能な最高水位L1以上の水がない場合には、ステップ64で次行程へ移行する。
【0037】
このように、運転開始以前に洗濯兼脱水槽6内に設定可能な最高水位L1以上の水があった場合に、運転開始時に排水弁13を制御し、設定可能な最高水位L4まで排水した後、洗い行程を行うので、運転開始以前に洗濯兼脱水槽6内に設定可能な最高水位以上の水があった場合に、洗い行程において洗濯兼脱水槽6を回転駆動する際に、溢水の発生を防止することができる。
【0038】
(実施例4)
図1に示す制御手段26は、洗い、すすぎ、脱水等の一連の行程を逐次制御するとともに、洗い行程、すすぎ行程の少なくとも1つの行程において、洗濯兼脱水槽6を回転駆動する槽回転行程を有し、この槽回転行程において、モータ11の休止時に水位検知手段21により、設定可能な最高水位L1以上と検知した場合、検知した行程において洗濯兼脱水槽6を回転駆動する際の回転数を設定回転数(たとえば160r/min)よりも低い値(たとえば90r/min)に変更するようにしている。他の構成は上記実施例1と同じである。
【0039】
上記構成において図7および図8を参照しながら動作を説明すると、ステップ71で槽回転行程を開始すると、制御手段26は、ステップ72で設定水位に応じて洗濯兼脱水槽6の設定回転数(160r/min)をセットし、ステップ73でモータ11をオンし、洗濯兼脱水槽6が設定された目標回転数になるようにモータ11を所定時間T2の間制御する。ステップ74で所定時間T3の間モータ11をオフし、ステップ75で再びモータ11を所定時間T4の間オンし、目標回転数になるようにモータ11を制御する。
【0040】
ステップ76で所定時間T5モータ11をオフし、モータオフの所定時間T5a経過後に、ステップ77で所定時間T5bの間、水位検知手段21の出力から水位を検知する。
【0041】
ステップ78で検知した水位が設定可能な最高水位L1以上か否かを判断し、設定可能な最高水位L1以上と判断した場合には、ステップ79で洗濯兼脱水槽6の設定回転数を設定よりも低い値(90r/min)に変更する。
【0042】
ステップ78で設定可能な最高水位L1未満と判断した場合には、ステップ80で槽回転行程が終了していると判断するまで、このステップ73からステップ79までの一連の動作を継続する。
【0043】
このように、洗いまたはすすぎ行程において、洗濯兼脱水槽6を回転駆動する行程運転中のモータ11を休止して一定時間経過後に水位を検知するようにしているので、洗濯兼脱水槽6内の水面の変化も静止時とほぼ等しくなり、水位を正しく検知することができ、なんらかの要因で給水弁15が故障し給水し続けた場合に、溢水の発生を防止することができる。
【0044】
【発明の効果】
以上のように本発明の請求項1に記載の発明によれば、洗濯物を収容する洗濯兼脱水槽と、前記洗濯兼脱水槽の中央底部に回転自在に配設されたパルセータと、前記洗濯兼脱水槽を回転自在に収容した外槽と、前記洗濯兼脱水槽または前記パルセータを回転駆動する駆動手段と、前記洗濯兼脱水槽内に給水する給水弁と、前記洗濯兼脱水槽の回転数を検知する回転検知手段と、前記洗濯兼脱水槽内の水位を検知する水位検知手段と、洗い、すすぎ、脱水の一連の行程を逐次制御する制御手段とを備え、前記制御手段は、前記洗い行程において、前記パルセータを回転駆動させる攪拌行程と、前記洗濯兼脱水槽を回転させて遠心力で水を上方に持ち上げて前記洗濯兼脱水槽内に散水する槽回転行程とを実行可能とし、前記洗い行程の運転開始時の給水開始前に前記洗濯兼脱水槽内に設定可能な最高水位以上の水があった場合、給水を行うことなく前記洗い行程を実行するようにし、前記槽回転行程において前記洗濯兼脱水槽回転数を、前記設定可能な最高水位における前記洗濯兼脱水槽の回転数よりも低い値になるように変更するようにしたから、使用者が、バケツや給水ポンプ等により、洗濯兼脱水槽内に水を最高水位以上の水位まで給水した場合のように、洗い行程の運転開始時の給水開始前に洗濯兼脱水槽内に設定可能な最高水位より多くの水があった場合に、槽回転行程において洗濯兼脱水槽を回転駆動する際の回転数を低くすることにより、洗濯兼脱水槽を回転駆動する際の溢水の発生を防止することができる。
【0045】
また、請求項2に記載の発明によれば、洗濯兼脱水槽内の洗濯物の量を検知する布量検知手段を備え、制御手段は、洗い行程の運転開始時の給水開始前に前記洗濯兼脱水槽内に設定可能な最高水位より多くの水があった場合、給水を行うことなく前記洗い行程を実行するようにし、前記槽回転行程において、前記洗濯兼脱水槽回転数を、前記布量検知手段により検知した洗濯物の量が少ないほど低い値になるように変更するようにしたから、洗濯物の量に基づいて回転数の下げ方を変えることにより、洗濯水が循環する際に、洗濯物の量が多いほど抵抗が大きくなるので、洗濯兼脱水槽内に散水される洗濯水の量が少なくなり、溢水の発生を防止することができる
【図面の簡単な説明】
【図1】 本発明の第1の実施例の洗濯機のブロック回路図
【図2】 同洗濯機の縦断面図
【図3】 同洗濯機の要部動作フローチャート
【図4】 同洗濯機の槽回転行程での洗濯兼脱水槽の回転数の変化を示すタイムチャート
【図5】 本発明の第2の実施例の洗濯機の要部動作フローチャート
【図6】 本発明の第3の実施例の洗濯機の要部動作フローチャート
【図7】 本発明の第4の実施例の洗濯機の要部動作フローチャート
【図8】 同洗濯機の槽回転行程での洗濯兼脱水槽の回転数の変化を示すタイムチャート
【図9】 従来の洗濯機の縦断面図
【図10】 同洗濯機のブロック回路図
【図11】 同洗濯機の槽回転行程での洗濯兼脱水槽の回転数の変化を示すタイムチャート
【符号の説明】
3 外槽
6 洗濯兼脱水槽
11 モータ(駆動手段)
20 回転検知手段
21 水位検知手段
26 制御手段[0001]
BACKGROUND OF THE INVENTION
The present invention has a washing or rinsing process in which the washing and dewatering tub is rotated and water is lifted upward by centrifugal force to sprinkle water in the washing and dewatering tub, and a series of washing, rinsing and dehydration processes are sequentially controlled. It relates to a washing machine.
[0002]
[Prior art]
Conventionally, this type of washing machine is configured as shown in FIGS. 9 and 10. Hereinafter, the configuration will be described.
[0003]
As shown in FIG. 9, the exterior body 1 elastically supports a water receiving tank 3 supported by a support plate 2 with a suspension 4. The water receiving tub 3 includes a washing / dehydrating tub 6 in which a pulsator 5 is rotatably disposed at the center bottom. The washing and dewatering tub 6 has a plurality of through holes 6a formed on the inner peripheral surface.
[0004]
The clutch mechanism portion 7 is attached to the outer bottom portion of the support plate 2, and includes a dewatering shaft 8 connected to a washing and dewatering tub 6 formed on a concentric double shaft and a washing shaft 9 fixed to the pulsator 5. The power of the motor (drive means) 11 that is supported and transmitted by the V-belt 10 is switched and transmitted to the dehydrating shaft 8 and the washing shaft 9 by excitation (on) / non-excitation (off) of the solenoid 12 for clutch switching. When the clutch switching solenoid 12 is energized (on), the power of the motor 11 is transmitted to the dewatering shaft 8 and the brake mechanism for fixing the dewatering shaft 8 is released, and the washing and dewatering tub 6 rotates. It is possible to perform washing, rinsing by centrifugal force, or dehydration operation.
[0005]
The drainage electromagnetic valve 13 opens and closes the drainage cock 14 and closes the drainage cock 14 by non-excitation (off) so that it can be washed and rinsed. The water supply valve 15 supplies water to the washing and dewatering tank 6.
[0006]
As shown in FIG. 10, the control device 16 includes a control means 17, a power switching means 18, a cloth amount detection means 19, a rotation detection means 20, a water level detection means 21, an operation display means 22, and the like. By controlling the power switching means 18 according to the command, the motor 11, the clutch switching solenoid 12, the drain electromagnetic valve 13, and the water supply valve 15 are controlled to sequentially control a series of steps of washing, rinsing and dehydration. Yes. Reference numerals 23 and 24 are capacitors for phase advancement of the motor 11.
[0007]
In the washing process and the rinsing process, the control unit 17 rotates the pulsator 5 and rotates the washing / dehydrating tub 6 to lift the water upward by centrifugal force and sprinkle water into the washing / dehydrating tub 6. It has a rotation stroke, and the combined use or single use of the phase-advancing capacitors 23 and 24 is switched according to the load amount of the motor 11 in each stroke, that is, the amount of laundry and the washing water level. .
[0008]
The operation at the time of washing in the above configuration will be described. When the laundry is put into the washing and dewatering tub 6 and the operation is started, the control means 17 turns on and off the motor 11 for a predetermined time, drives the pulsator 5 in the reverse direction, and the motor by frictional resistance applied to the pulsator 5 11 The counter electromotive force generated between the terminals of the capacitor 23 at the time of OFF is converted into a pulse by the cloth amount detection means 19 to determine the cloth amount, and the detergent amount and the water level with respect to the cloth amount determined by the operation display means 22 are displayed. .
[0009]
Next, the water supply valve 15 is turned on according to the determined amount of cloth to automatically supply water, and when the predetermined water level is reached, the water supply valve 15 is turned off and the pulsator 5 is driven to rotate and the washing and dewatering tub 6 is rotated. The washing process is executed by appropriately combining a tank rotation process in which water is lifted upward by centrifugal force and water is sprayed into the washing and dewatering tank 6.
[0010]
In the tank rotation process, the rotation detecting means 20 detects the number of rotations of the washing and dewatering tub 6 and controls the power switching means 18 so as to ensure a uniform watering amount even if the amount of laundry changes, thereby controlling the power switching means 18. The rotation speed of the dewatering tank 6 is made constant.
[0011]
An example of a change in the number of rotations of the washing and dewatering tank 6 in the tank rotation process is shown in FIG. For example, in the case of a medium water level setting (water column 280 mm), the target rotation speed is set to 160 r / min, and a pause is sandwiched between time Ts to form two peaks, and the motor 11 is turned on / off or phase controlled, etc. The cycle of this time T is repeated by controlling the energization ratio, switching the combined use or single use of the phase-advancing capacitors 23, 24.
[0012]
[Problems to be solved by the invention]
In such a conventional configuration, when the user supplies water into the washing and dewatering tub 6 to a level higher than a predetermined water level by a bucket or a water supply pump before starting the operation, the control means is used. 17, because the rotational speed of the washing / dehydrating tub 6 is controlled in the tank rotation process by the set rotational speed at the upper limit water level among the settable water levels, the rotational speed of the washing / dehydrating tub 6 rises to the set value. There is a possibility of overflowing from the upper part of the washing and dewatering tank 6 .
[0013]
The present invention solves the above problem, and when there is more water than the maximum water level that can be set in the washing and dewatering tub before the start of operation, the overflow when rotating the washing and dewatering tub during the washing process It has been with the purpose to prevent the occurrence.
[0014]

[Means for Solving the Problems]
To achieve the invention above Symbol purpose, the laundry were housed washing and dewatering tank which is disposed rotatably a pulsator in the central bottom portion rotatably accommodated in the outer tub, the washing and dewatering tank in the the water level detected by the water level detecting means, the washing and dewatering tank or pulsator is rotated by a driving means, the rotating speed of the washing and dewatering tank is detected by the rotation detecting means, the control means, washing, rinsing, a series of dehydration In the washing step, the stirring step for rotating the pulsator in the washing step and the tank rotation step for rotating the washing and dehydrating tank and lifting the water upward by centrifugal force to sprinkle the water in the washing and dehydrating tank are performed. executable and then, when there is more water than the highest water level that can be set in the washing and dewatering tank before the start of the water supply at the start of operation wash step, so as to perform a wash step without performing water supply, the bath rotation in the process, The rotational speed of the濯兼dewatering tank, in which so as to change to become lower than the rotation speed of the washing and dewatering tank at the highest water level that can be set.
[0015]
Thereby, generation | occurrence | production of the overflow at the time of rotationally driving a washing and dewatering tank in a washing process can be prevented .
[0016]

DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, there is provided a washing and dewatering tub for storing laundry, a pulsator rotatably disposed at a center bottom of the washing and dewatering tub, and the washing and dewatering tub being rotatable. An outer tub accommodated in the tub, a driving means for rotationally driving the washing / dehydrating tub or the pulsator , a water supply valve for supplying water into the washing / dehydrating tub, and a rotation detecting means for detecting the rotational speed of the washing / dehydrating tub And a water level detecting means for detecting the water level in the washing and dewatering tub, and a control means for sequentially controlling a series of steps of washing, rinsing and dewatering, wherein the control means controls the pulsator in the washing step. a stirring step of rotationally driven, the washing and dewatering tank by rotating lifts the water upward by centrifugal force and can execute the tank rotation step for watering the washing and dewatering in the water tank, at the start of operation of the wash step water supply before the start the of If there is more water than the highest water level that can be set in the tub rotating stroke濯兼de water tank, so as to perform the washing operation without water supply in the vessel-rotation step, the washing and dewatering tank of the rotational speed, which was set to be changed to be lower than the rotational speed of the washing and dewatering tank in the settable maximum water level, the user, by the bucket and the water supply pump or the like, washing and When there is more water than the maximum water level that can be set in the washing / dehydration tank before the start of water supply at the start of the washing process, such as when water is supplied to a level higher than the maximum water level in the dehydration tank in tank-rotation process, by reducing the rotational speed of the washing and dewatering tank, it is possible to prevent the occurrence of flooding at the time of rotating the washing and dewatering tank.
[0017]
The invention according to claim 2 is provided with cloth amount detection means for detecting the amount of laundry in the washing and dewatering tub in the invention according to claim 1, wherein the control means is provided at the start of the operation of the washing process. When there is more water than the maximum water level that can be set in the washing / dehydrating tank before the start of water supply, the washing process is executed without supplying water , and the washing / dehydrating tank is used in the tank rotation process. The number of rotations is changed so that the lower the amount of laundry detected by the cloth amount detection means, the lower the value, and the lowering of the number of rotations is changed based on the amount of laundry. Thus, when the wash water circulates, the greater the amount of laundry, the greater the resistance. Therefore, the amount of wash water sprayed into the washing and dewatering tub is reduced, and the occurrence of overflow can be prevented .
[0018]

【Example】
Embodiments of the present invention will be described below with reference to the drawings. In addition, the thing of the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description.
[0019]
(Example 1)
As shown in FIGS. 1 and 2, the control device 25 has a control means 26 constituted by a microcomputer. The control means 26 sequentially controls a series of steps such as washing, rinsing, and dehydration, and is also operated. Before the start, if there is water above the maximum water level that can be set in the washing / dehydrating tub 6, the washing / dehydrating tub 6 is rotated in the washing process and the water is lifted upward by centrifugal force. The number of revolutions when watering is changed to a value lower than the number of revolutions at the highest water level that can be set.
[0020]
In the above configuration, the operation will be described with reference to the flowchart of FIG. 3. When the start switch (not shown) of the operation display means 22 is turned on in step 41 and the operation is started, the control means 26 is in step 42. It is determined by the output of the water level detection means 21 whether or not there is water above the maximum water level L1 that can be set in the washing and dewatering tub 6.
[0021]
If there is water that can be set at the maximum water level L1 or higher, a value lower than the rotation speed (for example, 160 r / min) at the maximum water level at which the rotation speed when the washing and dewatering tub 6 is rotationally driven in step 43 can be set. (For example, 90 r / min). If there is no water above the maximum water level L1 that can be set in step 42, the water supply valve 15 is controlled in step 44 to supply water to the set water level.
[0022]
Next, in step 45, using the result detected by the rotation detecting means 20 according to the set rotational speed, the energization ratio is controlled by turning the motor 11 on / off or by phase control, or the phase-advancing capacitors 23 and 24 are used together. Alternatively, the washing / dehydrating tub 6 is rotationally controlled by switching the single use, and a washing process is performed in which water is lifted upward by centrifugal force and sprinkled into the washing / dehydrating tub 6.
[0023]
An example of the rotation speed change of the washing and dewatering tub 6 at this time is shown in FIG. In the washing process, the highest water level that can be set when the washing and dewatering tub 6 is rotationally driven is the middle water level (water column 280 mm). When there is no water up to the middle water level (maximum water level that can be set) at the start of operation, operation is performed at a target rotational speed setting of 160 r / min, but when there is water above the middle water level (maximum water level that can be set). The target rotational speed setting is lowered to 90 r / min, and operation is performed to prevent overflow from the upper part of the washing and dewatering tub 6.
[0024]
In the present embodiment, the rotational speed control of the motor 11 is based on on / off or phase control, but an inverter or the like can be used, and the present invention is not limited to this.
[0025]
(Example 2)
The control means 26 shown in FIG. 1 sequentially controls a series of processes such as washing, rinsing, and dehydration, and reversely drives the pulsator 5 for a predetermined time after water supply to the maximum water level that can be set. From this output, the amount of laundry put into the washing and dewatering tub 6 is detected.
[0026]
The control means 26 detects the number of rotations when the washing / dehydrating tub 6 is rotationally driven in the washing process when there is water above the maximum water level that can be set in the washing / dehydrating tub 6 before the start of operation. Based on the amount of laundry, the value is changed to a value lower than the rotational speed at the highest water level that can be set. Other configurations are the same as those of the first embodiment.
[0027]
In the above configuration, the operation will be described with reference to the flowchart of FIG. 5. When the start switch (not shown) of the operation display means 22 is turned on in step 51 and the operation is started, the control means 26 is in step 52. It is determined by the output of the water level detection means 21 whether or not there is water above the maximum water level L1 that can be set in the washing and dewatering tub 6.
[0028]
If there is water above the settable maximum water level L1, the pulsator 5 is driven reversely for a predetermined time in step 53, and the amount of laundry is detected from the output of the amount of cloth detection means 19 at that time. According to the amount of cloth detected in step 54, the set rotational speed of the washing and dewatering tub 6 is changed from the rotational speed (for example, 160 r / min) at the highest water level that can be set as shown in (Table 1).
[0029]
[Table 1]
Figure 0004103249
[0030]
If there is no water above the maximum water level L1 that can be set in step 52, the water supply valve 15 is controlled to supply water to the set water level in step 55, and the pulsator 5 is driven reversely for a predetermined time in step 56. Cloth amount detection is performed to detect the amount of laundry from the output of the amount detection means 19.
[0031]
Next, in step 56, the washing and dewatering tub 6 is rotationally controlled by controlling the energization ratio by turning the motor 11 on / off or by phase control using the result detected by the rotation detecting means 20 according to the set rotational speed. Then, a washing step is performed in which water is lifted upward by centrifugal force and sprinkled into the washing and dewatering tub 6.
[0032]
In this embodiment, when there is water above the maximum water level that can be set in the washing and dewatering tub 6 at the start of washing, the set rotation speed is changed according to the detected amount of cloth. When the rotation of the washing / dehydrating tub 6 is performed, the larger the amount of laundry, the smaller the amount of water sprinkled in the washing / dehydrating tub 6 at the same rotation speed. This is because it is hard to live.
[0033]
Thus, when there is water above the maximum water level that can be set in the washing and dewatering tub 6 before the start of operation, the laundry in which the rotation speed when the washing and dewatering tub 6 is rotationally driven in the washing process is detected. Based on the amount of water, the rotation speed is changed to a value lower than the maximum water level that can be set, so when rotating the washing and dewatering tub during the washing process, the rotation speed is controlled more finely according to the amount of laundry. However, it is possible to prevent the occurrence of overflow.
[0034]
(Example 3)
The control means 26 shown in FIG. 1 controls a series of processes such as washing, rinsing, and dehydration, and when there is water above the maximum water level L1 that can be set at the start of operation, after draining to the maximum water level L1 that can be set. It is configured to start operation. Other configurations are the same as those of the first embodiment.
[0035]
In the above configuration, the operation will be described with reference to the flowchart of FIG. 6. When the start switch (not shown) of the operation display means 22 is turned on in step 61 and the operation is started, the control means 26 is in step 62. It is determined by the output of the water level detection means 21 whether or not there is water above the maximum water level L1 that can be set in the washing and dewatering tub 6.
[0036]
If there is water above the maximum water level L1 that can be set, the drain valve 13 is controlled at step 63 to drain the water to the maximum water level L1 that can be set, and the process proceeds to the next step at step 64. If there is no water above the maximum water level L1 that can be set in step 62, the process proceeds to the next step in step 64.
[0037]
Thus, after there is water above the maximum water level L1 that can be set in the washing and dewatering tub 6 before the start of operation, after the drain valve 13 is controlled at the start of operation and drained to the maximum water level L4 that can be set. Since the washing process is performed, if there is water above the maximum water level that can be set in the washing / dehydrating tub 6 before the start of operation, overflow is generated when the washing / dehydrating tub 6 is rotationally driven in the washing process. Can be prevented.
[0038]
Example 4
The control means 26 shown in FIG. 1 sequentially controls a series of processes such as washing, rinsing, and dehydration, and performs a tank rotation process for rotationally driving the washing and dewatering tank 6 in at least one process of the washing process and the rinsing process. In the tank rotation process, when the motor 11 is stopped, when the water level detection means 21 detects that the settable maximum water level L1 or higher, the rotation speed when the washing and dewatering tank 6 is rotationally driven in the detected process is determined. The rotation speed is changed to a value (for example, 90 r / min) lower than the set rotational speed (for example, 160 r / min). Other configurations are the same as those of the first embodiment.
[0039]
The operation will be described with reference to FIGS. 7 and 8 in the above configuration. When the tank rotation process is started in step 71, the control means 26 determines the set rotation speed (of the washing and dewatering tank 6 in accordance with the set water level in step 72 ( 160 r / min) is set, the motor 11 is turned on in step 73, and the motor 11 is controlled for a predetermined time T <b> 2 so that the washing and dewatering tub 6 has a set target rotational speed. In step 74, the motor 11 is turned off for a predetermined time T3. In step 75, the motor 11 is turned on again for a predetermined time T4, and the motor 11 is controlled so as to reach the target rotational speed.
[0040]
In step 76, the T5 motor 11 is turned off for a predetermined time, and after a predetermined time T5a of motor off, a water level is detected from the output of the water level detecting means 21 for a predetermined time T5b in step 77.
[0041]
It is determined whether or not the water level detected in step 78 is equal to or higher than the maximum water level L1 that can be set. If it is determined that the water level is equal to or higher than the maximum water level L1 that can be set, in step 79, the set rotational speed of the washing and dewatering tub 6 is set. Is also changed to a low value (90 r / min).
[0042]
If it is determined in step 78 that it is less than the maximum water level L1 that can be set, the series of operations from step 73 to step 79 is continued until it is determined in step 80 that the tank rotation stroke has been completed.
[0043]
In this way, in the washing or rinsing process, the motor 11 during the process of driving to rotate the washing / dehydrating tub 6 is stopped and the water level is detected after a predetermined time has elapsed. The change in the water surface is almost equal to that at rest, so that the water level can be detected correctly. If the water supply valve 15 fails and continues to be supplied for some reason, the occurrence of overflow can be prevented.
[0044]
【The invention's effect】
As described above, according to the first aspect of the present invention, the washing / dehydrating tub for storing the laundry, the pulsator rotatably disposed at the center bottom of the washing / dehydrating tub, and the washing An outer tub in which the dewatering tub is rotatably accommodated, driving means for rotationally driving the washing and dewatering tub or the pulsator , a water supply valve for supplying water into the washing and dewatering tub, and the number of rotations of the washing and dewatering tub A rotation detecting means for detecting the water level, a water level detecting means for detecting the water level in the washing and dehydrating tub, and a control means for sequentially controlling a series of steps of washing, rinsing and dewatering, the control means comprising the washing In the process, the stirring process of rotating the pulsator and the tank rotation process of rotating the washing and dewatering tank and lifting the water upward by centrifugal force to sprinkle the water in the washing and dewatering tank can be performed, operation at the start of the wash step If there is the washing and high water more water can be set to de-water tank before the start of the water supply, so as to perform the washing operation without water supply in the vessel-rotation step, the washing and dewatering tank of the rotational speed, it is so arranged to change so as to lower than the rotational speed of the washing and dewatering tank in the settable maximum water level, the user, by the bucket and the water supply pump or the like, washing and dewatering the water tank the like in the case of water the water to high water above the water level, when there is more water than the highest water level that can be set in the washing and dewatering tank before the start of the water supply at the start of operation of the wash step, the vessel rotates in stroke, by the washing and dewatering tank low rotational speed when rotated, it is possible to prevent the occurrence of flooding at the time of rotating the washing and dewatering tank.
[0045]
According to a second aspect of the present invention, the cloth amount detecting means for detecting the amount of laundry in the washing and dewatering tub is provided, and the control means is configured to perform the washing before the start of water supply at the start of the washing process. If there is more water than the highest water level that can be set and dewatering the water tank, so as to perform the washing operation without water supply in the vessel-rotation step, the rotational speed of the washing and dewatering tank, wherein Since the change is made so that the lower the amount of laundry detected by the cloth amount detection means, the lower the value, the way in which the washing water circulates by changing the rotation speed based on the amount of laundry. In addition, since the resistance increases as the amount of laundry increases, the amount of washing water sprayed into the washing and dewatering tub decreases, and the occurrence of overflow can be prevented .
[Brief description of the drawings]
FIG. 1 is a block circuit diagram of a washing machine according to a first embodiment of the present invention. FIG. 2 is a longitudinal sectional view of the washing machine. FIG. 3 is a main part operation flowchart of the washing machine. Time chart showing change in rotation speed of washing / dehydrating tank in tank rotation process FIG. 5 is a main part operation flowchart of the washing machine of the second embodiment of the present invention. FIG. 6 is a third embodiment of the present invention. FIG. 7 is a flow chart showing the operation of the main part of the washing machine according to the fourth embodiment of the present invention. FIG. 8 is a diagram showing the change in the rotation speed of the washing and dewatering tub during the tank rotation process. FIG. 9 is a longitudinal cross-sectional view of a conventional washing machine. FIG. 10 is a block circuit diagram of the washing machine. FIG. 11 shows the change in the rotation speed of the washing and dewatering tub during the tank rotation process of the washing machine. Time chart shown 【Explanation of symbols】
3 Outer tub 6 Washing / dehydration tub 11 Motor (drive means)
20 Rotation detection means 21 Water level detection means 26 Control means

Claims (2)

洗濯物を収容する洗濯兼脱水槽と、前記洗濯兼脱水槽の中央底部に回転自在に配設されたパルセータと、前記洗濯兼脱水槽を回転自在に収容した外槽と、前記洗濯兼脱水槽または前記パルセータを回転駆動する駆動手段と、前記洗濯兼脱水槽内に給水する給水弁と、前記洗濯兼脱水槽の回転数を検知する回転検知手段と、前記洗濯兼脱水槽内の水位を検知する水位検知手段と、洗い、すすぎ、脱水の一連の行程を逐次制御する制御手段とを備え、前記制御手段は、前記洗い行程において、前記パルセータを回転駆動させる攪拌行程と、前記洗濯兼脱水槽を回転させて遠心力で水を上方に持ち上げて前記洗濯兼脱水槽内に散水する槽回転行程とを実行可能とし、前記洗い行程の運転開始時の給水開始前に前記洗濯兼脱水槽内に前記槽回転行程における設定可能な最高水位より多くの水があった場合、給水を行うことなく前記洗い行程を実行するようにし、前記槽回転行程において前記洗濯兼脱水槽回転数を、前記設定可能な最高水位における前記洗濯兼脱水槽の回転数よりも低い値になるように変更するようにした洗濯機。A washing / dehydrating tub for storing laundry, a pulsator rotatably disposed at a center bottom of the washing / dehydrating tub, an outer tub for rotatably storing the washing / dehydrating tub, and the washing / dehydrating tub Alternatively , a driving means for rotationally driving the pulsator , a water supply valve for supplying water into the washing and dehydrating tub, a rotation detecting means for detecting the rotation speed of the washing and dehydrating tub, and a water level in the washing and dehydrating tub Water level detecting means, and control means for sequentially controlling a series of steps of washing, rinsing, and dewatering, and the control means includes a stirring step for rotationally driving the pulsator in the washing step, and the washing and dewatering tank. the water is rotated by centrifugal force to lift upward and can execute the tank rotation step for watering the washing and dewatering in the water tank, in the washing and dewatering tank before the start of the water supply at the start of operation of the wash step the In the tank rotation process If there is more water than the highest water level that can be set to kick, so as to perform the washing operation without water supply in the vessel-rotation step, the rotational speed of the washing and dewatering tank, wherein the settable highest A washing machine that is changed to a value that is lower than the number of rotations of the washing and dewatering tub at the water level. 洗濯兼脱水槽内の洗濯物の量を検知する布量検知手段を備え、制御手段は、洗い行程の運転開始時の給水開始前に前記洗濯兼脱水槽内に設定可能な最高水位より多くの水があった場合、給水を行うことなく前記洗い行程を実行するようにし、前記槽回転行程において、前記洗濯兼脱水槽回転数を、前記布量検知手段により検知した洗濯物の量が少ないほど低い値になるように変更するようにした請求項1記載の洗濯機。A cloth amount detecting means for detecting the amount of laundry in the washing / dehydrating tub is provided, and the control means is more than a maximum water level that can be set in the washing / dehydrating tub before the start of water supply at the start of the washing process . If there is water, so as to perform the washing operation without water supply in the vessel-rotation step, the rotational speed of the washing and dewatering tank, the amount of laundry detected by the laundry amount detecting means is less The washing machine according to claim 1, wherein the washing machine is changed so as to have a lower value.
JP16639199A 1999-06-14 1999-06-14 Washing machine Expired - Fee Related JP4103249B2 (en)

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US7958650B2 (en) * 2006-01-23 2011-06-14 Turatti S.R.L. Apparatus for drying foodstuffs
JP2016002263A (en) * 2014-06-17 2016-01-12 株式会社東芝 Washing/dewatering machine
JP7303609B2 (en) * 2017-07-10 2023-07-05 東芝ライフスタイル株式会社 washing machine
CN111424391A (en) * 2019-01-08 2020-07-17 青岛海尔洗衣机有限公司 Washing machine

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