JPH05253384A - Controller of washing machine - Google Patents

Abstract

PURPOSE:To prevent a washing machine from abnormally vibrating on spin- drying to reduce the noises and further make it easy to take out clothes after spin-drying, in a controller of the washing machine automatically carrying out sequential washing, rinsing, and spin-drying processes. CONSTITUTION:A controller 7 composed of various electronic circuits including a microcomputer receives signals of a condenser terminal voltage detector 13 to control the current conduction of double directional thyristors 10a, 10b driving the motor 6. In the condenser terminal voltage detector 13, the load in the washing and spin-drying tank is detected by the detection of the terminal voltage of the condenser 14 and the output thereof is input in the controller 7. One of a plurality of intermittent spin-drying time intervals having different intervals respectively is selected in an intermittent spin-drying time limit selector 15. The attenuation time and the variation rate of the terminal voltage of the condenser 14 or the attenuation rate of the number of voltage waves, etc., are measured to judge the condition of clothes. In this way, the appropriate spin-drying time interval is selected in accordance with the condition of cloth.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、洗い、すすぎ、脱水の
一連の工程を自動的に行う洗濯機の制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine controller for automatically performing a series of steps of washing, rinsing and dehydrating.

【０００２】[0002]

【従来の技術】近年、洗濯機は洗いから脱水までを自動
制御できる制御装置を備えたものが主流となってきてい
る。2. Description of the Related Art In recent years, a washing machine equipped with a control device capable of automatically controlling from washing to dehydration has become mainstream.

【０００３】従来、この種の洗濯機の制御装置は、洗濯
とすすぎの各工程終了後に排水を行ない、次に図７に示
すような単一な間欠時限による間欠脱水を行ない、次の
脱水工程に移行するものが一般的であった。Conventionally, a control device for a washing machine of this type performs drainage after each step of washing and rinsing, then performs intermittent dehydration by a single intermittent time period as shown in FIG. It was common to move to.

【０００４】[0004]

【発明が解決しようとする課題】しかしながら上記従来
の洗濯機の制御装置では、排水直後の布の状態に無関係
で単一な間欠時限による間欠脱水を行っているので、布
のからみが充分にほぐされない状態で次の脱水工程へ移
行し、脱水終了後において脱水兼洗濯槽内の布がからみ
ついて取り出しが困難であり、また脱水起動時に布のア
ンバランスにより異常振動を引き起こして機体が移動し
たり、さらに脱水時の騒音や機体振動が増大して床面に
も大きな振動を伝えるという問題があった。However, in the above conventional washing machine control device, the intermittent dewatering is performed by a single intermittent time period regardless of the state of the cloth immediately after draining, so that the entanglement of the cloth is sufficiently loosened. When the spin-drying process is started, the cloth in the washing tub is entangled and it is difficult to take it out.After the spin-drying is started, the imbalance of the cloth causes abnormal vibration and the machine moves. In addition, there was a problem that noise during dehydration and vibration of the machine body increased and a large vibration was transmitted to the floor surface.

【０００５】本発明は上記従来の問題を解決するもの
で、布の状態に適した脱水時限を選択することにより、
脱水時の異常振動を防止し、騒音を低減させ、脱水終了
後に布を取り出しやすくすることができる洗濯機の制御
装置を提供することを目的とする。The present invention solves the above-mentioned conventional problems. By selecting a dehydration time limit suitable for the condition of the cloth,
An object of the present invention is to provide a washing machine control device capable of preventing abnormal vibration during dehydration, reducing noise, and facilitating removal of cloth after completion of dehydration.

【０００６】[0006]

【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、制御手段はその内部に記憶されている時限
が異なる複数の間欠脱水時限のうち１つを選択する間欠
脱水時限選択手段を有し、間欠脱水時限選択手段が負荷
量検知手段の信号を取り込んで排水工程終了直後に時限
を選択する構成としたものである。In order to achieve the above-mentioned object, the present invention has a control means for selecting one of a plurality of intermittent dehydration time limits having different time intervals stored therein. The intermittent dehydration time limit selection means takes in the signal of the load amount detection means and selects the time limit immediately after the end of the drainage process.

【０００７】[0007]

【作用】上記した構成において、負荷量検知手段が排水
工程終了直後の布の負荷量を判定し、間欠脱水時限選択
手段が布の状態に適した間欠脱水時限を選択する。In the above-mentioned structure, the load amount detecting means determines the load amount of the cloth immediately after the draining process, and the intermittent dewatering time selecting means selects the intermittent dewatering time suitable for the state of the cloth.

【０００８】[0008]

【実施例】以下、本発明の一実施例について、図１〜図
６を参照しながら説明する。図３に示すように、外枠１
内の外槽２には洗濯兼脱水槽３が回転自在に配設され、
洗濯兼脱水槽３内の下部には攪拌翼４を回転自在に設け
ている。攪拌翼４と洗濯兼脱水槽３は減速機構部５によ
り、モータ６の回転力が選択的に切り換えられて伝達さ
れ、洗濯兼脱水槽３または攪拌翼４が駆動する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 3, the outer frame 1
A washing and dehydrating tub 3 is rotatably arranged in the inner outer tub 2,
A stirring blade 4 is rotatably provided in the lower portion of the washing / dehydrating tub 3. The stirring blade 4 and the washing / dehydrating tub 3 are selectively switched and transmitted by the speed reducing mechanism 5 by the speed reducing mechanism 5, so that the washing / dehydrating tub 3 or the stirring blade 4 is driven.

【０００９】図１において、７はマイクロコンピュータ
を含んだ各種電子回路から構成されている制御手段であ
り、これは操作キー（図示せず）からの指示、蓋スイッ
チ８、水位検知手段９等からの信号を取り込んで、モー
タ６を駆動する双方向性サイリスタ１０ａ、１０ｂと、
排水用マグネット１１および給水弁１２をそれぞれ駆動
する双方向性サイリスタ１０ｃ、１０ｄとを通電制御す
るものである。モータ６の正回転および逆回転は双方向
性サイリスタ１０ａ、１０ｂによって行われ、双方向性
サイリスタ１０ａをＯＮとし、双方向性サイリスタ１０
ｂをＯＦＦにするとモータ６は正回転し、また、双方向
性サイリスタ１０ｂをＯＮとし、双方向性サイリスタ１
０ａをＯＦＦにするとモータ６は逆回転する。コンデン
サ端子電圧検知手段１３はコンデンサ１４の端子電圧を
検知し、この信号を制御手段７に入力することにより洗
濯兼脱水槽３内の布の負荷量を検知する。また制御手段
７はコンデンサ１４の出力によりモータ６に所要時間通
電した後休止期間におけるモータ６の逆起電圧の減衰率
により洗濯兼脱水槽３内の布の状態を判定する。１５は
間欠脱水時限選択手段であり、これは制御手段７内に記
憶されている間欠時限が異なる複数の間欠脱水時限のう
ち１つを選択するものである。またコンデンサ１４の端
子電圧はモータ６の回転数と相関があり、双方向性サイ
リスタ１０ａをＯＮとし、その後の休止期間中にコンデ
ンサ１４の端子電圧はモータ６の回転数に応じて減衰す
る。モータ６の回転後の休止期間においては双方向性サ
イリスタ１０ａ、１０ｂともＯＦＦ状態のためコンデサ
１４の端子電圧は零となるが、休止期間前にモータ６を
回転させ洗濯兼脱水槽３を駆動しているためモータ６は
慣性により回転を続け、主コイルおよび補助コイルに逆
起電圧を誘起し、この逆起電圧は回転数の減少とともに
低下して図２に示すような波形となる。図２（ａ）は負
荷量が少なくモータ６の回転数の減少量が少ない場合で
あり、また図２（ｂ）は逆に負荷量が多くモータ６の回
転数が急速に減少する場合である。負荷量が多い場合に
はモータ６の回転数は急速に減少し、コンデンサ１４の
端子電圧も低下するので、洗濯兼脱水槽３内の布のから
みつき、ほぐれ具合などの布の状態を負荷量として検知
できる。すなわち、コンデンサ１４の端子電圧の減衰時
間（図２中のＴ１ａ、Ｔ１ｂ）、コンデンサ１４の端子
電圧の変化率または電圧波形数などの減衰率を測定して
布の状態を判定している。In FIG. 1, reference numeral 7 is a control means composed of various electronic circuits including a microcomputer, which includes instructions from operation keys (not shown), a lid switch 8, a water level detection means 9 and the like. Bidirectional thyristors 10a and 10b for driving the motor 6 by capturing the signal of
The energization is controlled for the bidirectional thyristors 10c and 10d that drive the drainage magnet 11 and the water supply valve 12, respectively. The forward and reverse rotations of the motor 6 are performed by the bidirectional thyristors 10a and 10b, the bidirectional thyristor 10a is turned on, and the bidirectional thyristor 10 is turned on.
When b is turned off, the motor 6 rotates in the normal direction, and the bidirectional thyristor 10b is turned on to turn the bidirectional thyristor 1 on.
When 0a is turned off, the motor 6 rotates in the reverse direction. The capacitor terminal voltage detection means 13 detects the terminal voltage of the capacitor 14 and inputs this signal to the control means 7 to detect the load amount of the cloth in the washing / dehydrating tub 3. Further, the control means 7 determines the state of the cloth in the washing / dehydrating tub 3 based on the decay rate of the counter electromotive voltage of the motor 6 during the rest period after the motor 6 is energized for a required time by the output of the condenser 14. Reference numeral 15 denotes an intermittent dehydration time limit selection means, which selects one of a plurality of intermittent dehydration time intervals stored in the control means 7 and having different intermittent time intervals. Further, the terminal voltage of the capacitor 14 has a correlation with the rotation speed of the motor 6, the bidirectional thyristor 10a is turned on, and the terminal voltage of the capacitor 14 is attenuated according to the rotation speed of the motor 6 during the rest period thereafter. During the rest period after the rotation of the motor 6, both terminals of the bidirectional thyristors 10a and 10b are in the OFF state, so that the terminal voltage of the capacitor 14 becomes zero. Therefore, the motor 6 continues to rotate due to inertia and induces a counter electromotive voltage in the main coil and the auxiliary coil, and the counter electromotive voltage decreases with a decrease in the rotation speed and has a waveform as shown in FIG. 2A shows a case where the load amount is small and the amount of decrease in the rotation speed of the motor 6 is small, and FIG. 2B shows a case where the load amount is large and the rotation speed of the motor 6 rapidly decreases. . When the load is large, the rotation speed of the motor 6 decreases rapidly and the terminal voltage of the condenser 14 also decreases. Can be detected. That is, the state of the cloth is determined by measuring the decay time of the terminal voltage of the capacitor 14 (T1a, T1b in FIG. 2), the rate of change of the terminal voltage of the capacitor 14, the number of voltage waveforms, and the like.

【００１０】図４に示すように、排水直後布がからみつ
いた塊のある場合は洗濯兼脱水槽３にアンバランスな負
荷がかかるため、布が均一にほぐれている場合（図３）
に対して負荷量が大きくなる。このように排水直後にお
いては布の状態により負荷量に大小があるため判別が可
能であり、コンデンサ１４の端子電圧波形数による判別
基準値を設定し、その判別基準値と波形数によって布の
状態を判別できる。As shown in FIG. 4, when the cloth is entangled immediately after draining, an unbalanced load is applied to the washing / dehydrating tub 3, so that the cloth is uniformly loosened (FIG. 3).
However, the load becomes large. As described above, it is possible to make a determination immediately after draining because the load amount is large or small depending on the condition of the cloth, and the judgment reference value is set by the number of terminal voltage waveforms of the capacitor 14, and the condition of the cloth is determined by the judgment reference value and the number of waveforms. Can be determined.

【００１１】次に図５に基づいてその動作を説明する。
まずステップ１にて初期設定における水位設定の後、ス
テップ２で給水を開始し、水位検知手段９により設定水
位と判断された場合には、ステップ３に進み給水を停止
し洗濯を開始する。ステップ４で洗濯が終了し排水を開
始し、ステップ５で排水が終了する。その直後にステッ
プ６で洗濯兼脱水槽３の回転を開始させ短時限のＯＮ−
ＯＦＦ通電を行い、ステップ７でモータ６への通電ＯＦ
Ｆ直後のコンデンサ１４の端子電圧波形数を測定し、ス
テップ８で布の状態判別を行い、判別基準値以上であれ
ば布が均一な状態と判断し、以下であればからみつきの
塊になっていると判断する。この判定の後、ステップ９
で布が均一な状態であれば図６に示すようにＯＮ−ＯＦ
Ｆ時限の短い間欠脱水、からみつきの塊があればＯＮ−
ＯＦＦ時限の長い間欠脱水に設定し、ステップ１０に進
み間欠脱水を行う。Next, the operation will be described with reference to FIG.
First, in step 1, after setting the water level in the initial setting, water supply is started in step 2, and when the water level detecting means 9 determines that the water level is the set water level, the process proceeds to step 3 to stop the water supply and start washing. In step 4, washing is finished and draining is started, and in step 5, draining is finished. Immediately after that, in step 6, the washing / dehydrating tub 3 starts to rotate and the short-time ON-
Energize OFF and energizes the motor 6 in step 7 OF
The number of terminal voltage waveforms of the capacitor 14 immediately after F is measured, the state of the cloth is discriminated in step 8, and if the discrimination reference value or more, it is determined that the cloth is in a uniform state, and if it is the discrimination reference value or less, a entangled mass is formed. Determine that After this determination, step 9
If the cloth is in a uniform state, as shown in Fig. 6, ON-OF
Short intermittent dehydration with F period, ON if there is a entangled mass-
The intermittent dehydration is set to a long OFF time, and the process proceeds to step 10 to perform intermittent dehydration.

【００１２】このように実施例の洗濯機の制御装置によ
れば、間欠脱水で布のからみつきをほぐし均一な状態に
することにより、脱水起動時に布のアンバランスによっ
て外槽３が外枠１に当たらず円滑に立ち上がり、機体の
移動を防止し、振動や騒音を低減することができ、また
脱水終了後の布のからみつきも防止できる。As described above, according to the controller of the washing machine of the embodiment, the entanglement of the cloth is loosened by the intermittent dehydration to make the cloth uniform, so that the outer tub 3 is moved to the outer frame 1 by the imbalance of the cloth when the dehydration is started. It can stand up smoothly without hitting, prevent movement of the machine, reduce vibration and noise, and also prevent entanglement of the cloth after the completion of dehydration.

【００１３】なお、洗濯兼脱水槽３内の布の負荷量を検
知する方法として、コンデンサ１４の端子電圧を検知す
るコンデンサ端子電圧検知手段１３を設けたもので説明
したが、コンデンサ１４の電流値を検知しても同様の作
用効果が得られることはいうまでもない。The method of detecting the load amount of the cloth in the washing / dehydrating tub 3 has been described by providing the capacitor terminal voltage detecting means 13 for detecting the terminal voltage of the capacitor 14, but the current value of the capacitor 14 is described. It goes without saying that the same action and effect can be obtained by detecting

【００１４】[0014]

【発明の効果】上記実施例から明らかなように本発明の
洗濯機の制御装置によれば、制御手段はその内部に記憶
されている時限が異なる複数の間欠脱水時限のうち１つ
を選択する間欠脱水時限選択手段を有し、間欠脱水時限
選択手段は負荷量検知手段の信号を取り込んで排水工程
終了直後に時限を選択するものであり、この構成とする
ことにより、布のからみを解きほぐしてアンバランスを
なくし、円滑に脱水起動させることができ、定常回転時
においても振動や騒音も低減させることができ、脱水終
了時の布からみつきも低減できるので布も取り出しやす
くなり、使用勝手も向上できる。As is apparent from the above embodiments, according to the control device for a washing machine of the present invention, the control means selects one of a plurality of intermittent dehydration time periods having different time intervals stored therein. It has intermittent dehydration time limit selection means, and the intermittent dehydration time limit selection means takes in the signal from the load amount detection means and selects the time period immediately after the end of the drainage process.By using this configuration, the entanglement of the cloth is unraveled. Unbalance can be eliminated, dehydration can be started smoothly, vibration and noise can be reduced even during steady rotation, and sticking to the fabric at the end of dehydration can be reduced, making it easier to remove the fabric and improving usability. ..

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例における洗濯機の制御装置の
ブロック回路図FIG. 1 is a block circuit diagram of a washing machine control device according to an embodiment of the present invention.

【図２】（ａ）（ｂ） 同制御装置の負荷量検知手段の
コンデンサ端子電圧の波形図2A and 2B are waveform diagrams of a capacitor terminal voltage of a load amount detecting means of the control device.

【図３】同洗濯機の断面図FIG. 3 is a sectional view of the washing machine.

【図４】同洗濯機の過負荷状態での断面図FIG. 4 is a sectional view of the washing machine in an overloaded state.

【図５】同洗濯機の制御装置の動作フローチャートFIG. 5 is an operation flowchart of a control device of the washing machine.

【図６】同洗濯機の制御装置の間欠脱水時限を示す図FIG. 6 is a view showing an intermittent dehydration time limit of the control device of the washing machine.

【図７】従来の洗濯機の制御装置の間欠脱水時限を示す
図FIG. 7 is a view showing an intermittent dehydration time limit of a conventional washing machine control device.

【符号の説明】[Explanation of symbols]

１ 外枠 ２ 外槽 ３ 洗濯兼脱水槽 ４ 撹拌翼 ６ モータ ７ 制御手段 １３ コンデンサ端子電圧検知手段（負荷量検知手段） １５ 間欠脱水時限選択手段 DESCRIPTION OF SYMBOLS 1 outer frame 2 outer tub 3 washing and dehydrating tub 4 stirring blade 6 motor 7 control means 13 capacitor terminal voltage detection means (load amount detection means) 15 intermittent dewatering time selection means

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【手続補正書】[Procedure amendment]

【提出日】平成５年２月１２日[Submission date] February 12, 1993

【手続補正１】[Procedure Amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】０００５[Correction target item name] 0005

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【０００５】本発明は上記従来の問題を解決するもの
で、布の状態に適した間欠脱水時限を選択することによ
り、脱水時の異常振動を防止し、騒音を低減させ、脱水
終了後に布を取り出しやすくすることができる洗濯機の
制御装置を提供することを目的とする。The present invention solves the above-mentioned conventional problems. By selecting an intermittent dehydration time period suitable for the condition of the cloth, abnormal vibration during dehydration is prevented, noise is reduced, and the cloth is dehydrated after the dehydration. An object is to provide a control device for a washing machine that can be easily taken out.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 洗濯兼脱水槽内に配設した撹拌翼を駆動
するモータへの通電制御を行う制御手段と、前記洗濯兼
脱水槽内の負荷量を検知する負荷量検知手段とを備え、
前記制御手段はその内部に記憶されている時限が異なる
複数の間欠脱水時限のうち１つを選択する間欠脱水時限
選択手段を有し、前記間欠脱水時限選択手段が前記負荷
量検知手段の信号を取り込んで排水工程終了直後に時限
を選択する構成とした洗濯機の制御装置。1. A control means for controlling energization of a motor for driving a stirring blade arranged in the washing / dehydrating tub, and a load amount detecting means for detecting a load amount in the washing / dehydrating tub,
The control means has an intermittent dehydration time limit selection means for selecting one of a plurality of intermittent dehydration time intervals stored in different intervals, and the intermittent dehydration time limit selection means outputs a signal from the load amount detection means. A washing machine control device configured to select the time limit immediately after taking in and completing the drainage process.