JPH0271797A - Operation control method for dewaterer - Google Patents
Operation control method for dewatererInfo
- Publication number
- JPH0271797A JPH0271797A JP22373888A JP22373888A JPH0271797A JP H0271797 A JPH0271797 A JP H0271797A JP 22373888 A JP22373888 A JP 22373888A JP 22373888 A JP22373888 A JP 22373888A JP H0271797 A JPH0271797 A JP H0271797A
- Authority
- JP
- Japan
- Prior art keywords
- dehydration
- motor
- dewatering
- water
- tank
- 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 15
- 238000005406 washing Methods 0.000 claims description 27
- 238000001035 drying Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 4
- 238000010981 drying operation Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 42
- 208000005156 Dehydration Diseases 0.000 description 120
- 230000018044 dehydration Effects 0.000 description 120
- 238000006297 dehydration reaction Methods 0.000 description 120
- 230000001133 acceleration Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 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てあり、脱水モーター（７）には該
モーター（７）の回転数を検出する速度発電機（１３）
が取付けである。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)
The dehydration motor (7) rotates the dehydration tank (3), and the dehydration motor (7) is equipped with a speed generator (13) that detects the rotation speed of the motor (7).
is the installation. In the figure, (11) are screws for fixing the rotating shaft (8) and the dehydration shaft (9) to the coupling (10), respectively. A hole (12) is drilled therein.
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）は電源（
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
る力ｌ、（２３）等からなる間欠連動機構と連動する。(7) is a dehydration motor, (18) is an induction coil, (19)
) is the starting capacitor connected to one end of the induction coil (18), (20) is the time switch, and (21) is the power supply (
15) is a time contact of the time switch (20) connected in series with the time contact (22), which is a time contact provided by branching off the fixed contact side of the time contact (21), which has an arcuate part and a toothed part. It is interlocked with an intermittent interlocking mechanism consisting of force l, (23), etc.
（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、切換スイッチ（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１５０Ｏｒｐｍ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 with a dehydrator with such a structure, put the laundry in the dehydration tank (3), set the desired time, close the time contact (21), and fix the changeover switch (24). When connected to contact A and energized to the dehydration motor (7), the dehydration tank (3) starts rotating, and the centrifugal force of the rotation causes the laundry to be removed from the dehydration hole (12) provided in the dehydration tank (3). The water contained in the water flows 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 timer contact (22) is closed until the rotational speed of the dehydration motor (7) reaches about 150 rpm from O, and thereafter the timer contact (22) is closed every few seconds by the teeth. 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、 ＠ｉ
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）、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Ｗｌ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 vibration amount when rotating the dehydration tank (3) are as shown in Fig. 7, where the horizontal axis is the angular velocity w, @i
When the amount of vibration is taken on the axis, the amount of vibration increases with the angular velocity W,
Point of the natural frequency Wl of the vibration isolation system that includes the dehydration tank (3), rotating shaft (8), dehydration shaft (9), dehydration motor (7), screw (11), vibration isolation spring (6), etc. It reaches a maximum at , 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（ｄ
Ｗｌ ／ ｄ ’ｒ’＋ ） ＝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 (d
Wl / d'r'+) = α1, and this angular acceleration α1 is the same whether the dehydrator is operated at full speed or intermittently, and the maximum amount of vibration occurs near the natural frequency of the dehydrator. ing.
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
水を排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太き（変わり、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 then drain the water used for washing in this dehydration process, rotating the dehydration tank will drain the water in the tank. It moves due to rotation, and due to this movement of water, the position of the center of gravity of the dehydration tank increases (changes) 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
る程度の時間を要する。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
があった。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. Therefore, it takes a certain amount of time to pass around the natural frequency. As a result, there was a risk that the dehydration tank would shake particularly strongly around this natural frequency and collide with the dehydration receiving tank.
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、脱水運転時に初期の段階で脱水モーターへ
の短時間の通電と脱水モーターが停止するよう前記通電
時の回転方向とは逆方向への短時間の通電とを複数回繰
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 operation and spin-drying operation in the spin-drying tank. The gist of this method is to repeat energization for a short time in the direction opposite to the rotational direction at the time of energization several times to stop the dehydration motor, and then to continuously energize the dehydration motor.
［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の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
とは逆方向に通電して脱水モーターが停止するように制
動を加える。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、固を振動数以
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（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 either the left or right direction to drain water. Then, before a large eccentric load occurs and before the natural frequency is reached, the dewatering motor is braked by applying current in the opposite direction of rotation from the previous time when the motor was turned on. Add. 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 vibration frequency, and then the dehydration motor is continuously energized to perform dehydration. At this time,
The rotation speed of the dehydration tank reaches the natural frequency and passes through this,
There is very little water left in the dehydration tank, so 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、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。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。Fig. 1 is a characteristic curve showing the relationship between energization time and angular velocity when using the dehydrator operation control method of the present invention, Fig. 2 is an electric circuit diagram of the dehydrating motor, and in Fig. 2, (16) is a dehydrating machine. A right rotation switch is connected to the motor (7), and (17) is a left rotation switch. Incidentally, since the dehydrator used in the method of the present invention is similar to the conventional example already explained with reference to FIG. 4, 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、まず左右いずれかの回転スイッチ、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１１は、脱水槽（３）の角速度
がその固有振動＃！１．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 draining and dehydration operation is performed in the dehydration tank (3), first, one of the left and right rotary switches, for example, the right Turn on the rotation switch (16) and turn on the dehydration motor (7).
energize for a time t1 to rotate the dehydration tank (3) to the right. During this initial energization time 11, the angular velocity of the dehydration tank (3) is its natural vibration #! 1. Set it to a short time that does not reach w+.
そして、この初期通電時間Ｌ１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 L1, 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. ) rotates at a high speed in contact with the circumferential surface, and the rotation speed slows down 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). and 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Ｌ２経過後に、今度は左回転スイッチ（１７）
がオンし、脱水モーター（７）は左回転方向に時間Ｌ２
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
うな制動力が加えられる。これにより脱水槽（３）は急
激に減速するが、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。Here, the power supply to the dehydration motor (7) is temporarily stopped, and after the de-energization time L2 has elapsed, the left rotation switch (17) is turned on.
is turned on, and the dehydration motor (7) rotates counterclockwise for a period of time L2.
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 direction, a braking force is applied to the dehydration tank (3) to stop it. It will be done. As a result, the dehydration tank (3) suddenly decelerates, but the remaining water in 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、残水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
加速に追いつけず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 cannot keep up with the acceleration of the dehydration tank (3) and is in a sliding state, no large vibrations occur.
以上のようにして脱水槽（３）の正回転による加速と逆
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、次に直らに左
回転方向に脱水モーター（７）に時間り、だけ通電する
ことで、脱水槽（３）の回転に制動が加えられ、その結
果、残水は脱水槽（３）の回転に追従できなくなり滑る
ようになる。As described above, the dehydration tank (3) is repeatedly accelerated by forward rotation and braked by reverse rotation, and the water in the dehydration tank (3) is gradually discharged at the rotation speed below the natural frequency in the initial stage of dehydration operation. When the remaining water becomes low, the dewatering motor (7) is energized again in the clockwise rotation direction and then stopped. During this stop time, the remaining water will catch up with the rotational speed of the dehydration tank (3), creating a large eccentric load, but then the dehydration motor (7) will be energized in the counterclockwise rotation direction for a period of time. Then, a brake is applied to the rotation of the dehydration tank (3), and as a result, the remaining water cannot follow the rotation of the dehydration tank (3) and starts to slip.
このようにして、大きな偏心荷重が住じる固有振動数通
過時には、通過後直ちに脱水槽（３）の回転に制動を加
えるから、大きな振動が生ずることはない。In this way, when passing through the natural frequency where a large eccentric load resides, the rotation of the dehydration tank (3) is braked immediately after passing, so that no large vibrations occur.
かかる間欠脱水を行った後、最後に脱水モーター（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（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, the dehydration motor (7)
Continuously energize to move to full speed dehydration. At this point, the amount of water in the dehydration tank (3) is small because it has been drained by the intermittent dehydration, and the overall weight of the dehydration tank (3) is small, so the acceleration during full speed dehydration is low. The angle is larger than the acceleration during intermittent dehydration, allowing the dehydration tank to pass through the vicinity of the natural frequency in a short time, and since there is not a large amount of water in the tank, an eccentric load is generated that acts on the dehydration tank (3). Not at all.
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・
〔発明の効果〕
以上述べたように本発明の脱水機の運転＋ｆａ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回の段階
で、脱水モーターへの通電と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
キによる制動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Ｆ）［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、スムーズに全速回転に達することができるも
のである。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. If a contact is used that has the function of preventing simultaneous energization of the left and right sides even when the left and right sides are energized, it is not necessarily necessary to provide an energization off time, and it is possible to energize the left rotation immediately after stopping energization of the right rotation.
[Effects of the Invention] As described above, the dehydrator operation + fa control method of the present invention is effective when performing a washing operation and a subsequent dehydration operation in the dehydration tank of a two-tub washing machine. At this stage, the water in the tank is intermittently drained by repeatedly applying electricity to the dehydration motor and energizing it in the reverse rotation direction to repeatedly apply acceleration and braking with an electric brake to the rotation of the dehydration tank. F) Since it can pass through the water in a short time without any generation, there is no risk of the dehydration tank shaking too much and hitting the dehydration receiving tank.
As a result, full speed rotation can be reached smoothly.
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）
（３）・・・脱水槽 （４）
（５）・・・底枠 （６）
（７）・・・脱水モーター （８）
（９）・・・脱水軸 （１０）（１１）・・・
ネジ （１２）（１３）・・・速度発電機
（１４）（１５）・・・電源 （１６
）（１７）・・・左回転スイッチ （１８）・・・洗濯
槽
・・・脱水受槽
・・・防振バネ
・・・回転軸
・・・カップリング
・・・脱水孔
・・・起動用コンデンサ
・・・右回転スイッチ
・・・誘電コイル
・・・起動用コンデンサ
・・・タイムスイッチ
・・・時限接点
・・・時限接点
・・・カム
・・・切換スイッチ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) (3)...Dehydration tank (4) (5)...Bottom frame (6) (7)...Dehydration motor (8) (9)... Dehydration shaft (10) (11)...
Screws (12) (13)... Speed generator (14) (15)... Power supply (16
) (17)...Left rotation switch (18)...Washing tub...Dehydration tank...Vibration proof spring...Rotary shaft...Coupling...Dehydration hole...Start capacitor ...Clockwise rotation switch...Induction coil...Starting capacitor...Time switch...Timer contact...Timer contact...Cam...Choice switch
Claims (1)
とを行う二槽式洗濯機において、脱水運転時に初期の段
階で脱水モーターへの短時間の通電と脱水モーターが停
止するよう前記通電時の回転方向とは逆方向への短時間
の通電と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 in which the spin-drying tank performs washing and spin-drying operations, the above-mentioned method is adopted so that the spin-dry motor is energized for a short time and the spin-dry motor is stopped at an early stage during the spin-dry operation. A method for controlling the operation of a dehydrator, characterized by repeatedly applying electricity for a short time in the direction opposite to the rotational direction when electricity is applied, and then continuously applying electricity to the dehydrating motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22373888A JPH0271797A (en) | 1988-09-07 | 1988-09-07 | Operation control method for dewaterer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22373888A JPH0271797A (en) | 1988-09-07 | 1988-09-07 | Operation control method for dewaterer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0271797A true JPH0271797A (en) | 1990-03-12 |
Family
ID=16802919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22373888A Pending JPH0271797A (en) | 1988-09-07 | 1988-09-07 | Operation control method for dewaterer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0271797A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7039976B2 (en) * | 2002-04-09 | 2006-05-09 | Maytag Corporation | Braking control system for a washing machine |
-
1988
- 1988-09-07 JP JP22373888A patent/JPH0271797A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7039976B2 (en) * | 2002-04-09 | 2006-05-09 | Maytag Corporation | Braking control system for a washing machine |
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