JPH02209196A - Operation control method for dehydrating machine - Google Patents
Operation control method for dehydrating machineInfo
- Publication number
- JPH02209196A JPH02209196A JP3022789A JP3022789A JPH02209196A JP H02209196 A JPH02209196 A JP H02209196A JP 3022789 A JP3022789 A JP 3022789A JP 3022789 A JP3022789 A JP 3022789A JP H02209196 A JPH02209196 A JP H02209196A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- dehydration
- dehydrating
- motor
- rotation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 16
- 230000018044 dehydration Effects 0.000 claims abstract description 148
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 148
- 238000005406 washing Methods 0.000 claims description 27
- 238000001035 drying Methods 0.000 claims description 11
- 238000010981 drying operation Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 49
- 238000013459 approach Methods 0.000 abstract description 2
- 208000005156 Dehydration Diseases 0.000 description 144
- 230000001133 acceleration Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は、洗濯槽と脱水槽とを備え、脱水槽で洗い運転
と脱水運転とを行う二槽式洗濯機の脱水機の運転制御方
法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for controlling the operation of a dehydrator in a two-tub washing machine, which is equipped with a washing tub and a dehydrating tub, and performs washing operation and dehydrating operation in the dehydrating tub. Regarding.
洗濯機構と脱水機構とを併設しである二槽式洗濯機は、
第３図に示すように外箱（１）内に洗濯槽（２）と脱水
槽（３）とを隣接させて設けたもので、この脱水槽（３
）は第４図に示すように、脱水受槽（４）の内側に設置
されている。A two-tub washing machine that has both a washing mechanism and a dehydrating mechanism,
As shown in Figure 3, a washing tub (2) and a dehydrating tub (3) are installed adjacent to each other in an outer box (1).
) is installed inside the dewatering tank (4) as shown in Fig. 4.
そして、底枠（５）に防振バネ（６）を介して取付けた
脱水モーター（７）の回転軸（８）と、脱水槽（３）の
下部に突出した脱水軸（９）とをカップリング（１０）
を介して連結し、脱水モーター（７）で脱水槽（３）を
回転させるようにしである９図中（１１）は回転軸（８
）、脱水軸（９）をそれぞれカップリング（１０）に固
定するためのネジであり、また、脱水槽（３）にはその
周囲側壁に排水用の脱水孔（１２）が穿設しである。Then, the rotation shaft (8) of the dehydration motor (7) attached to the bottom frame (5) via the vibration isolation spring (6) and the dehydration shaft (9) protruding from the bottom of the dehydration tank (3) are connected to the cup. ring (10)
(11) in Figure 9 is the rotation shaft (8), and the dehydration motor (7) rotates the dehydration tank (3).
) and are screws for fixing the dehydration shaft (9) to the coupling (10), respectively, and the dehydration tank (3) has a dehydration hole (12) for drainage in the side wall around it. .
かかる脱水槽（３）での脱水運転の制御方法として、従
来、例えば実公昭４９−２５４９１号公報に示されてい
るものがある。これは、脱水率の悪い布の場合は強い回
転力で脱水し、脱水率のよい布の場合は少ない回転数で
適当時間脱水して、常に布地に適した回転数で脱水しよ
うとするもので、その制御回路を第５図について説明す
る。As a method of controlling the dehydration operation in the dehydration tank (3), there is a conventional method disclosed in, for example, Japanese Utility Model Publication No. 49-25491. This method uses a strong rotational force to dehydrate fabrics with a poor dehydration rate, and dehydrates fabrics with a good dehydration rate at a low rotational speed for an appropriate amount of time. , its control circuit will be explained with reference to FIG.
（７）は脱水モーター （１８）は誘電コイル、（１９
）は誘電コイル（１８）の一端に接続された起動用コン
デンサ、（２０）はタイムスイッチ、（２１）は電ａ
（１５）に直列に接続されたタイムスイッチ（２０）の
時限接点、（２２）は時限接点（２１）の固定接点側を
分岐して設けた時限接点で、これは円弧部と歯状部を有
するカム（２３）等からなる間欠連動機構と連動する。(7) is the dehydration motor (18) is the induction coil, (19)
) is the starting capacitor connected to one end of the dielectric coil (18), (20) is the time switch, and (21) is the electric a
(15) is a time contact of the time switch (20) connected in series, and (22) is a time contact provided by branching off the fixed contact side of the time contact (21), which has a circular arc portion and a toothed portion. It is interlocked with an intermittent interlocking mechanism consisting of a cam (23) and the like.
（２４）は制御回路の切換スイッチで時限接点（１６）
の固定接点側で分岐して設けた固定接点Ａと、時限接点
（２２）と接続される固定接点Ｂとを選択するものであ
る。(24) is the control circuit changeover switch and the time contact (16)
The fixed contact A is branched and provided on the fixed contact side of the fixed contact, and the fixed contact B is connected to the time contact (22).
このような構造の脱水機で脱水運転を行うには、脱水槽
（３）内に洗濯物を入れ、任意の時間を設定して時限接
点（２１）を閉路し、切換スイ・ソチ（２４）を固定接
点Ａに接続して脱水モーター（７）に通電すれば、脱水
槽（３）は回転を開始し、その回転の遠心力によって脱
水槽（３）に設けである脱水孔（１２）から洗濯物に含
まれている水分が脱水槽（３）外に飛び出して脱水され
る。この時、第６図の曲線（イ）に示すように時間の経
過とともに回転数が増加し、強い脱水力を得ることがで
きる。また、切換スイッチ（２４）を固定接点Ｂに接続
すれば、カム（２３）が駆動し連動機構が円弧部を摺動
する時限となる。すなわち、曲線（ロ）に示すように脱
水モーター（７）の回転数がＯより約１５０Ｏｒρｍ程
度に達するまでは時限接点（２２）は閉路し、その後は
歯状部によって数秒間毎に時限接点の開閉を繰り返すこ
とで、ある一定の回転数に達したところで安定した低速
回転を続行し弱い回転力を得るようにしている。To perform dehydration in a dehydrator with such a structure, put the laundry in the dehydration tank (3), set an arbitrary time, close the time contact (21), and turn the switch switch (24). When connected to the fixed contact A and energizing the dehydration motor (7), the dehydration tank (3) starts rotating, and the centrifugal force of the rotation causes water to flow through the dehydration hole (12) provided in the dehydration tank (3). The water contained in the laundry jumps out of the dehydration tank (3) and is dehydrated. At this time, as shown by curve (a) in FIG. 6, the rotational speed increases with the passage of time, and a strong dewatering force can be obtained. Furthermore, when the changeover switch (24) is connected to the fixed contact B, the cam (23) is driven and the interlocking mechanism slides on the arc portion. That is, as shown in the curve (b), the time contact (22) is closed until the rotational speed of the dehydration motor (7) reaches approximately 150 Orρm from O, and thereafter the time contact (22) is closed every few seconds by the toothed part. By repeatedly opening and closing, it continues to rotate at a stable low speed once it reaches a certain number of rotations, producing a weak rotational force.
ところで、脱水槽（３）を回転させた時の、角速度と振
動量とは第７図に示すように、横軸に角速度Ｗ、樅軸に
振動量をとると、振動量は角速度Ｗと共に増大し、脱水
槽（３）、回転軸（８）、脱水軸（９）、カップリング
（１０）、脱水モーター（７）、ネジ（１１） 、防振
バネ（６）等全てを含んだ防振系の固有振動数Ｗ１の点
で最大となり、その後下降し、ある値で一定となる。By the way, the angular velocity and the amount of vibration when rotating the dehydration tank (3) are as shown in Figure 7. If the horizontal axis is the angular velocity W and the fir axis is the amount of vibration, the amount of vibration increases with the angular velocity W. The anti-vibration system includes the dehydration tank (3), rotating shaft (8), dehydration shaft (9), coupling (10), dehydration motor (7), screw (11), anti-vibration spring (6), etc. It reaches a maximum at the natural frequency W1 of the system, then decreases, and becomes constant at a certain value.
かかる角速度と振動量の関係は、前記従来例においても
あてはまるもので、第６図に示すように、脱水槽（３）
が停止状態から回転を開始する初期の角加速度は（ａＷ
Ｉ／ａＴ＋）−α１となっており、この角加速度α１は
脱水機を全速運転する場合も間欠運転する場合も同様で
、脱水モーター（７）の起動トルクと脱水槽（３）内の
重量によって決定され、脱水機の固有振動数付近で最大
の振動量となっている。This relationship between the angular velocity and the amount of vibration also applies to the conventional example, and as shown in FIG.
The initial angular acceleration when starts rotating from a stopped state is (aW
I/aT+) - α1, and this angular acceleration α1 is the same whether the dehydrator is operated at full speed or intermittently, and depends on the starting torque of the dehydrating motor (7) and the weight in the dehydrating tank (3). The maximum amount of vibration is found near the natural frequency of the dehydrator.
他方、洗濯物の量が少ないときは、この脱水槽（３）で
脱水運転のみならず洗い運転を行うこともあり、洗い運
転に続く脱水運転においては、洗いに使用した水をこの
脱水工程で排水するようにしており、排水の方法として
は、脱水と同様に、脱水モーター（７）に通電して脱水
槽（３）を回転させ、その回転の遠心力により、脱水槽
（３）に設けた脱水孔（１２）から脱水槽（３）内の水
を外部に排出する。On the other hand, when the amount of laundry is small, this dehydration tank (3) may perform not only dehydration operation but also washing operation, and in the dehydration operation that follows the washing operation, the water used for washing is used in this dehydration process. As with dewatering, the dehydrating motor (7) is energized to rotate the dehydrating tank (3), and the centrifugal force of the rotation is used to remove water from the dehydrating tank (3). The water in the dehydration tank (3) is discharged to the outside from the dehydration hole (12).
洗濯槽で洗い運転を行い、その後、洗濯物を脱水槽で脱
水する場合は、脱水槽内には衣類が投入されるだけなの
で、脱水槽の重心は衣類を投入した時点である程度定ま
っており、脱水運転進行中もこの重心位置はほとんど変
わらない。よって、脱水運転開始後、脱水槽の回転数が
高くなるにしたがい、衣類に含まれている水分が徐々に
排出され、全速運転の場合は全回転に、間欠運転の場合
は所定の回転数にそれぞれスムーズに立上がることがで
きる。When washing is performed in the washing tub and then the laundry is dehydrated in the spin-drying tank, the center of gravity of the spin-drying tank is determined to some extent when the clothes are placed in the spin-drying tank, as the clothes are simply thrown into the spin-drying tank. This center of gravity position hardly changes even during dehydration operation. Therefore, as the rotation speed of the dehydration tank increases after the start of dehydration operation, the moisture contained in the clothes is gradually discharged, and the rotation speed decreases to full rotation in the case of full-speed operation, or to a predetermined rotation speed in the case of intermittent operation. Each can stand up smoothly.
しかし、脱水槽側で洗い運転を行い、そのまま同じ脱水
槽で脱水運転を行って、この脱水工程で洗いに使用した
水をｌ）水させようとする場合は、脱水槽を回転すると
槽内の水が回転により動き、この水の動きによって脱水
槽の重心位置が回転とともに大きく変わりどこの重心変
動が偏芯荷重として脱水槽に作用することとなる。However, if you perform washing operation on the dehydration tank side, then perform dehydration operation in the same dehydration tank, and try to drain the water used for washing in this dehydration process, rotating the dehydration tank will cause the water inside the tank to drain. The water moves due to rotation, and due to this movement of water, the center of gravity of the dehydration tank changes significantly with rotation, and this variation in the center of gravity acts on the dehydration tank as an eccentric load.
その結果、脱水槽が揺れて脱水受槽にぶつかり、スムー
ズに全回転、あるいは所定の回転に達することができな
いという不都合が生じていた。As a result, the dehydration tank shakes and collides with the dehydration receiving tank, resulting in an inconvenience in that the dehydration tank cannot smoothly reach a full rotation or a predetermined rotation.
この偏芯荷重は、脱水槽と内部の水とが滑っているとき
、すなわち脱水槽の加速に内部の水が追従しきれない間
はそれ程大きいものではないが、内部の水の回転速度が
脱水槽の回転速度に追いついた時にはかなり大きな偏芯
荷重となる。This eccentric load is not so large when the dehydration tank and the water inside are slipping, that is, when the internal water cannot follow the acceleration of the dehydration tank, but the rotational speed of the internal water is When it catches up with the rotational speed of the aquarium, it becomes a fairly large eccentric load.
また、脱水槽の揺れは、前記のごとくその固有振動数で
最大となるが、脱水槽での洗い運転に続く脱水運転では
、槽内に入っている水によって脱水槽の全体重量が大き
くなっているために、固有振動数付近を通過するのにあ
る程度の時間を要し、しかもこの固有振動数付近の回転
数に達すると脱水槽内の水に大きな振動が与えられて、
水が片寄り大きな偏心荷重となる。Furthermore, as mentioned above, the shaking of the dehydration tank reaches its maximum at its natural frequency, but during the dehydration operation that follows the washing operation in the dehydration tank, the overall weight of the dehydration tank increases due to the water in the tank. Because of this, it takes a certain amount of time to pass around the natural frequency, and when the rotation speed reaches around this natural frequency, a large vibration is applied to the water in the dehydration tank.
The water is on one side, creating a large eccentric load.
その結果、この固有振動数付近で脱水槽が特に大きく揺
れて脱水受槽にぶつかるおそれがあり、脱水槽の回転を
スムーズに立上げることができなかった。As a result, the dehydration tank vibrates particularly strongly around this natural frequency and may collide with the dehydration receiving tank, making it impossible to start up the rotation of the dehydration tank smoothly.
また、脱水槽の回転が固有振動数を通過するに際し、脱
水槽内の水が脱水槽の回転に追従しきれないようなスピ
ードで加速または減速すれば偏心荷重が生ぜず脱水槽に
大きな振動が生ずることもないが、加速については脱水
モーターの回転数を高めることで充分な加速度を得るこ
とができても、減速については通電オフによる自然停止
によるのみであったので、この減速も時に水が偏心荷重
となってしまうことが多かった。In addition, when the rotation of the dehydration tank passes through its natural frequency, if the water in the dehydration tank accelerates or decelerates at a speed that cannot follow the rotation of the dehydration tank, eccentric loads will not occur and large vibrations will occur in the dehydration tank. Although sufficient acceleration could be obtained by increasing the rotational speed of the dehydration motor, deceleration was only caused by a natural stop due to the power being turned off, and this deceleration was sometimes caused by water leakage. This often resulted in eccentric loads.
本発明の目的は前記従来例の不都合を解消し、脱水槽で
の洗い運転に続けて脱水運転を行う場合に、槽内の水の
動きが脱水槽の回転速度と同期して偏芯荷重となるのを
防止し、また固有振動数付近を早く通過するようにして
脱水槽が大きく揺れるのを防止し、所定の回転数による
回転にスムーズに達することのできる脱水機の運転制御
方法を提供することにある。The purpose of the present invention is to eliminate the disadvantages of the conventional example, and to provide a system in which, when a dehydration operation is performed following a washing operation in a dehydration tank, the movement of water in the tank is synchronized with the rotational speed of the dehydration tank, resulting in an eccentric load. To provide a method for controlling the operation of a dehydrator, which prevents the dehydration tank from shaking significantly by causing the dehydration tank to quickly pass through the vicinity of the natural frequency, and can smoothly reach rotation at a predetermined rotation speed. There is a particular thing.
本発明は前記目的を達成するため、−洗濯槽と脱水槽と
を備え、脱水槽で洗い運転と脱水運転とを行う二槽式洗
濯機において、脱水モーターのトルクを左右いずれか一
方の回転方向側を大きく設定し、脱水運転工程の初期の
段階に、脱水モーターに左右いずれかトルクの小さい回
転方向側に所定の短時間通電したのち、脱水モーターが
停止状態となるよう前記通電時の回転方向とは逆方向の
トルクの大きい回転方向側に所定の短時間通電する運転
工程を設け、該工程を複数回繰返して行い、その後、脱
水モーターに連続通電することを要旨とするものである
。In order to achieve the above-mentioned object, the present invention provides a two-tub washing machine that is equipped with a washing tub and a spin-drying tank and performs washing and spin-drying operations in the spin-drying tank, in which the torque of the spin-drying motor is controlled in either the left or right rotational direction. At the initial stage of the dehydration operation process, the dehydration motor is energized for a predetermined short period of time in the direction of rotation with the least torque, and then the direction of rotation when energized is set so that the dehydration motor comes to a halt. The gist of this method is to provide an operation step in which electricity is applied for a predetermined short period of time in the direction of rotation in which the torque is greater, which is opposite to the rotation direction, and to repeat this process multiple times, after which the dehydration motor is continuously energized.
〔作用〕
本発明によれば、脱水槽での洗い運転に続いて同種で脱
水運転を行う場合、脱水運転の初期の段階で、まず脱水
モーターに左右いずれかトルクの小さい回転方向に短時
間通電して排水を行い、大きな偏芯荷重が生じないうち
に、かつ、固有振動数に達しないうちに、今度は前回の
通電時の回転方向とは逆方向のトルクの大きい回転方向
に通電して脱水モーターに制動を加え、これを急速かつ
完全に停止させる。この状態では脱水槽内の水は脱水槽
の急速な停止に追従しきれずに前回の通電時の回転方向
に回り続ける。そして、次に再び短時間通電して排水を
行い、次いで逆方向に再び通電して脱水モーターに制動
を加える。かかる動作を複数回繰り返して、固有振動数
以下の回転数で脱水槽内の水をある程度排水しておいて
から、脱水モーターに連続通電して脱水を行う。この時
、脱水槽の回転数は固有振動数に達しここを通過するが
、脱水槽内の残水は少なくなっているので、大きな振動
が生ずることはない。[Function] According to the present invention, when performing a dehydration operation of the same type after a washing operation in a dehydration tank, in the initial stage of the dehydration operation, the dehydration motor is first energized for a short time in the rotation direction with the smallest torque, either the left or the right. Then, before a large eccentric load occurs and before the natural frequency is reached, energize in the direction of rotation with a large torque, which is opposite to the direction of rotation when energization was applied last time. Apply braking to the dewatering motor to bring it to a rapid and complete stop. In this state, the water in the dehydration tank cannot follow the rapid stoppage of the dehydration tank and continues to rotate in the direction of rotation during the previous energization. Next, the water is energized again for a short period of time to drain the water, and then the water is energized again in the opposite direction to brake the dewatering motor. This operation is repeated several times to drain some of the water in the dehydration tank at a rotation speed below the natural frequency, and then the dehydration motor is continuously energized to perform dehydration. At this time, the rotational speed of the dehydration tank reaches the natural frequency and the vibration passes through this, but since the remaining water in the dehydration tank is small, no large vibrations occur.
（実施例） 以下、図面について本発明の実施例を詳細に説明する。(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図は本発明の脱水機の運転制御方法による場合の通
電時間と角速度との関係を示す特性曲線図、第２図は脱
水モーターの電気回路図で、第２図中、（１６）は脱水
モーター（７）に接続した右回転スイッチ、（１７）は
左回転スイッチを示す。Fig. 1 is a characteristic curve diagram showing the relationship between energization time and angular velocity when using the dehydrator operation control method of the present invention, and Fig. 2 is an electric circuit diagram of the dehydrating motor. A right rotation switch is connected to the dehydration motor (7), and (17) is a left rotation switch.
また、（１３ａ ） （１３ｂ ）は誘電コイルで、
右回転用と左回転用とで発生トルクが異なるように巻線
を設定し、本実施例では左回転のトルクの方を大きく設
定しである。なお、本発明方法で使用する脱水機は第４
図について既に説明した従来例と同様であるから、ここ
での詳細な説明は省略する。Also, (13a) and (13b) are dielectric coils,
The windings are set so that the generated torques are different for clockwise rotation and counterclockwise rotation, and in this embodiment, the torque for counterclockwise rotation is set to be larger. Note that the dehydrator used in the method of the present invention is the fourth dehydrator.
Since this is the same as the conventional example already explained with reference to the figures, detailed explanation will be omitted here.
本発明の運転制御方法は、脱水槽（３）で洗い運転を行
った後、これに続けて該脱水槽（３）で排水、脱水運転
を行う場合、まずトルクの小さい方の回転スイッチ、例
えば右回転スイッチ（１６）をオンして脱水モーター（
７）に時間ｔ１だけ通電して脱水槽（３）を右方向へ回
転させる。この初期通電時間ｔ１は、脱水槽（３）の角
速度がその固有振動数Ｗ、に達しないような短時間のも
のに設定しておく。In the operation control method of the present invention, when a washing operation is performed in the dehydration tank (3) and then a drainage and dehydration operation is performed in the dehydration tank (3), first, the rotary switch with the smaller torque, e.g. Turn on the right rotation switch (16) and turn on the dehydration motor (
7) is energized for time t1 to rotate the dehydration tank (3) to the right. This initial energization time t1 is set to a short time such that the angular velocity of the dehydration tank (3) does not reach its natural frequency W.
そして、この初期通電時間ｔ、の間に、脱水槽（３）内
の水も回転するが、この水の動きは脱水槽（３）の加速
度が水の粘性を上回っているため、脱水槽（３）の周面
と接する部分は速い速度で回転し、中心に向かうにした
がい回転速度が遅くなる。そして、脱水槽（３）の回転
による遠心力で槽内の水は該脱水槽（３）の周壁に対し
滑りながら徐々に加速し、これにそって立上げられ、脱
水孔（１２）を通って槽外に排出される。During this initial energization time t, the water in the dehydration tank (3) also rotates, but the movement of this water is caused by the acceleration of the dehydration tank (3) exceeding the viscosity of the water. 3) The portion in contact with the circumferential surface rotates at a high speed, and the rotation speed becomes slower toward the center. Then, due to the centrifugal force caused by the rotation of the dehydration tank (3), the water in the tank is gradually accelerated while sliding against the peripheral wall of the dehydration tank (3), and is raised along this and passes through the dehydration hole (12). It is discharged outside the tank.
ここで、脱水モーター（７）への通電が一旦停止し、非
通電時間１１経過後に、今度は左回転スイツチ（１７）
がオンし、脱水モーター（７）は左回転方向に時間ｔ３
だけ通電される。この時、脱水槽（３）は慣性により右
回転しているので、脱水モーター（７）への左回転方向
への通電により、脱水槽（３）にはこれを停止させるよ
うなトルク、すなわち制動力が加えられる。この左回転
方向のトルクは右回転の時よりも大きく設定しであるの
で、脱水槽（３）は急速にかつ安全に停止させられ、脱
水槽（３）内の残水は脱水槽（３）の停止に追従しきれ
ず、水だけが右方向への回転を続ける。At this point, the power to the dehydration motor (7) is temporarily stopped, and after 11 de-energization times have elapsed, the left rotation switch (17) is turned on.
is turned on, and the dehydration motor (7) rotates counterclockwise for time t3.
Only the current is energized. At this time, the dehydration tank (3) is rotating clockwise due to inertia, so by energizing the dehydration motor (7) in the counterclockwise rotation direction, a torque is applied to the dehydration tank (3) to stop it. Power is added. Since this torque in the counterclockwise rotation direction is set larger than that in clockwise rotation, the dehydration tank (3) can be stopped quickly and safely, and the remaining water in the dehydration tank (3) can be removed from the dehydration tank (3). Unable to follow the stoppage of the water, only the water continues to rotate to the right.
そして、停止時間ｔ４を経て、再び右回転スイッチ（１
６）がオンし所定時間だけ脱水モーター（７）に通電さ
れた後、停止して、次に再び左回転スイッチ（１７）が
オンし、所定時間通電される。Then, after the stop time t4, the clockwise rotation switch (1
6) is turned on and the dewatering motor (7) is energized for a predetermined time, then stopped, and then the counterclockwise rotation switch (17) is turned on again and the dehydration motor (7) is energized for a predetermined time.
かかる動作を繰返し、脱水槽（３）内の残水が徐々に排
水され、残本が減少するにしたがい、脱水槽（３）が加
速された時の回転数も徐々に高いものとなり、次第に固
有振動数付近に近づく。しかし、残水は脱水槽（３）の
加速に追いつかす滑っている状態であるから、大きな振
動が生じることはない。By repeating this operation, the remaining water in the dehydration tank (3) is gradually drained, and as the remaining water decreases, the rotation speed when the dehydration tank (3) is accelerated gradually becomes higher, and the rotation speed gradually increases. It approaches the frequency. However, since the remaining water is in a sliding state that catches up with the acceleration of the dehydration tank (3), no large vibrations occur.
以上のようにして脱水槽（３）の右回転による加速と逆
の左回転による制動とを繰返して脱水運転の初期の段階
において固有振動数以下の回転数で脱水槽（３）内の水
を徐々に排出し、残水が少なくなったところで、脱水モ
ーター（７）に再び右回転方向に通電し、次いで停止す
る。この停止時間中に、今度は残水が脱水槽（３）の回
転速度に追いつき、大きな偏心荷重が生じるが、次に直
ちに左回転方向に脱水モーター（７）に時間ｔ。As described above, the acceleration by rotating the dehydration tank (3) to the right and the braking by rotating the dehydration tank (3) to the left are repeated, and the water in the dehydration tank (3) is removed at a rotational speed below the natural frequency in the initial stage of dehydration operation. When the water is gradually drained and the remaining water is reduced, the dewatering motor (7) is energized again in the clockwise rotation direction and then stopped. During this stop time, the remaining water catches up with the rotational speed of the dehydration tank (3) and a large eccentric load is generated, but then the dehydration motor (7) is immediately rotated counterclockwise for a period of time t.
たけ通電することで、脱水槽（３）の回転に急速に制動
が加えられ、その結果、残水は脱水槽（３）の回転に再
び追従できな（なり滑るようになる。By energizing the dehydration tank (3), the rotation of the dehydration tank (3) is rapidly braked, and as a result, the remaining water is unable to follow the rotation of the dehydration tank (3) again (and begins to slip).
このようにして−気に脱水槽（３）の回転数を下げて固
有振動数を通過するので大きな偏心荷重が生じることが
なく脱水槽（３）が大きく振動することはない。In this way, the rotational speed of the dehydration tank (3) is lowered to pass the natural frequency, so that no large eccentric load is generated and the dehydration tank (3) does not vibrate greatly.
そして、脱水槽（３）に加えられる左回転の力により脱
水槽（３）は〕、速かつ安全に停止するので、次に右回
転方向の力が加えられたときには安定した状態でスムー
ズに立上がることができる。The dehydration tank (3) will stop quickly and safely due to the counterclockwise rotation force applied to the dehydration tank (3), so the next time a clockwise rotation force is applied, the dehydration tank (3) will stand up smoothly and stably. can go up.
図中、破線で示した曲線は脱水槽（３）を停止すべ（左
回転方向側に通電しなかった場合の脱水槽（３）の回転
力の変化を示す。In the figure, the curve indicated by a broken line indicates the change in the rotational force of the dehydration tank (3) when the dehydration tank (3) is stopped (no electricity is applied in the counterclockwise rotation direction).
かかる間欠脱水を行った後、通電オフ時間を経て最後に
モーター（７）に連続通電して全速脱水に移行する。こ
の時点での脱水槽（３）内の水の量は前記間欠脱水によ
り排水されているので少なくなっており、脱水槽（３）
全体の重量が小さくなっているために全速脱水時の加速
角度は間欠脱水時の加速度よりも大きく、固有振動数付
近を短時間で通過でき、また、槽内には大量の水はない
ので、偏芯荷重が生じてこれが脱水槽（３）に作用する
こともない。After performing such intermittent dehydration, after a period of energization off, the motor (7) is finally continuously energized to shift to full speed dehydration. At this point, the amount of water in the dehydration tank (3) has decreased because it has been drained due to the intermittent dehydration, and the amount of water in the dehydration tank (3) has decreased.
Because the overall weight is smaller, the acceleration angle during full-speed dehydration is larger than that during intermittent dehydration, and the natural frequency can be passed in a short time.Also, since there is not a large amount of water in the tank, There is no possibility that an eccentric load will occur and act on the dehydration tank (3).
なお、前記実施例において、右回転通電後に、通電オフ
時間を設けたが、これは左右同時通電を防止するためで
あるので、例えばマイコン制御による高速スイッチング
が可能な場合や、機械タイマーを使用する場合でも左右
同時通電を防止する機能を有する接点を採用する場合に
は、通電オフ時間は必ずしも設ける必要はなく、右回転
通電停止後、直ちに左回転に通電することができる。In the above embodiment, a energization off time was provided after clockwise energization, but this is to prevent simultaneous energization of the left and right sides.For example, if high-speed switching by microcomputer control is possible, or if a mechanical timer is used. Even in this case, if a contact point having a function of preventing simultaneous energization of the left and right sides is used, it is not necessarily necessary to provide an energization off time, and it is possible to energize the left rotation immediately after the right rotation energization is stopped.
以上述べたように本発明の脱水機の運転制御方法は、二
槽式洗濯機の脱水槽で洗い運転とこれに続く脱水運転を
行う場合に、脱水運転時においてその初期の段階で、脱
水モーターへの通電とこれよりも大きなトルクによる逆
回転方向への通電との繰返しにより、脱水槽の回転に対
して加速と電気的ブレーキによる停止とを繰返し与える
ようにして槽内の水を間欠的に徐々に排出するようにし
たので、脱水槽と水との回転が同期して脱水槽に大きな
偏芯荷重が作用するおそれがなく、また、脱水槽の固有
振動数付近を大きな振動を発生させることなく短時間で
通過できるので、脱水槽が大きく揺れて脱水受槽にぶつ
かるおそれがなく、その結果、スムーズに排水し、かつ
全速回転に達することができるものである。As described above, the method for controlling the operation of a dehydrator according to the present invention is such that when a washing operation and a subsequent dehydration operation are performed in the dehydration tank of a two-tub washing machine, the dehydration motor is By repeating energization to , and energization in the opposite rotation direction with a larger torque, the rotation of the dehydration tank is repeatedly accelerated and stopped by an electric brake, and the water in the tank is intermittently drained. Since the water is discharged gradually, there is no risk that the rotation of the dehydration tank and water will be synchronized and a large eccentric load will be applied to the dehydration tank, and that large vibrations will be generated near the natural frequency of the dehydration tank. Since the dehydration tank can pass through the dewatering tank in a short time without shaking, there is no risk of the dehydration tank shaking and hitting the dehydration receiving tank, and as a result, the water can be drained smoothly and it can reach full speed rotation.
第１図は本発明の脱水機の運転制御方法の実施例を示す
通電時間と脱水槽の回転数との関係を示す特性曲線図、
第２図は脱水モーターの電気回路図、第３図は二槽式洗
濯機の全体斜視図、第４図は同上要部である脱水機の縦
断側面図、第５図は従来の脱水制御回路図、第６図は同
上通電時間と脱水槽の回転数との関係を示す特性曲線図
、第７図は脱水槽の角速度と振動量との関係を示す特性
曲線図である。
（１）・・・外箱 （２）・・・洗濯槽（３
）・・・脱水槽 （４）・・・脱水受槽（５）
・・・底枠 （６）・・・防振バネ（７）・
・・脱水モーター （８）・・・回転軸（９）・・・
脱水軸 （１０）・・・カップリング（１１）
・・・ネジ （１２）・・・脱水孔（１３ａ
）（１３ｂ）・・・・・・誘電コイル（１４）・・・起
動用コンデンサ
（１５）・・・電源 （１６）・・・右回転
スイッチ（１７）・・・左回転スイッチ （１Ｂ）・・
・誘電コイル（１９）・・・起動用コンデンサ（２０）
・・・タイムスイッチ（２１）・・・時限接点
（２３）・・・カム
（２２）・・・時限接点
（２４）・・・切換スイッチ
第２図FIG. 1 is a characteristic curve diagram showing the relationship between the energization time and the rotation speed of the dehydrating tank, showing an embodiment of the dehydrator operation control method of the present invention;
Figure 2 is an electric circuit diagram of the dewatering motor, Figure 3 is an overall perspective view of a two-tub washing machine, Figure 4 is a longitudinal cross-sectional side view of the dehydrator, which is the main part of the same, and Figure 5 is a conventional dehydrating control circuit. 6 is a characteristic curve diagram showing the relationship between the energization time and the rotation speed of the dehydration tank, and FIG. 7 is a characteristic curve diagram showing the relationship between the angular velocity of the dehydration tank and the amount of vibration. (1)...Outer box (2)...Washing tub (3
)...Dehydration tank (4)...Dehydration tank (5)
... Bottom frame (6) ... Anti-vibration spring (7)
... Dehydration motor (8) ... Rotating shaft (9) ...
Dehydration shaft (10)...Coupling (11)
... Screw (12) ... Dehydration hole (13a
) (13b)...Induction coil (14)...Starting capacitor (15)...Power supply (16)...Right rotation switch (17)...Left rotation switch (1B)・
・Induction coil (19)...starting capacitor (20)
... Time switch (21) ... Time limit contact (23) ... Cam (22) ... Time limit contact (24) ... Selector switch Figure 2
Claims (1)
とを行う二槽式洗濯機において、脱水モーターのトルク
を左右いずれか一方の回転方向側を大きく設定し、脱水
運転工程の初期の段階に、脱水モーターに左右いずれか
トルクの小さい回転方向側に所定の短時間通電したのち
、脱水モーターが停止状態となるよう前記通電時の回転
方向とは逆方向のトルクの大きい回転方向側に所定の短
時間通電する運転工程を設け、該工程を複数回繰返して
行い、その後、脱水モーターに連続通電することを特徴
とした脱水機の運転制御方法。In a two-tub washing machine that is equipped with a washing tub and a spin-drying tank, and the spin-drying tank performs washing and spin-drying operations, the torque of the spin-drying motor is set to be large in either the left or right direction of rotation, and the initial stage of the spin-drying process is At this stage, the dewatering motor is energized for a predetermined short period of time in the direction of rotation with the least torque, either the left or right, and then the direction of rotation with the most torque is energized in the opposite direction to the direction of rotation when the dehydration motor is energized so that the dehydration motor is stopped. 1. A method for controlling the operation of a dehydrator, comprising: providing an operating step in which the dehydrating motor is energized for a predetermined short time, repeating the step a plurality of times, and then continuously energizing the dehydrating motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3022789A JPH02209196A (en) | 1989-02-09 | 1989-02-09 | Operation control method for dehydrating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3022789A JPH02209196A (en) | 1989-02-09 | 1989-02-09 | Operation control method for dehydrating machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02209196A true JPH02209196A (en) | 1990-08-20 |
Family
ID=12297831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3022789A Pending JPH02209196A (en) | 1989-02-09 | 1989-02-09 | Operation control method for dehydrating machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02209196A (en) |
-
1989
- 1989-02-09 JP JP3022789A patent/JPH02209196A/en active Pending
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