JPH0513350Y2 - - Google Patents

Description

【考案の詳細な説明】 (イ) 産業上の利用分野 本考案は、洗濯機に関する。[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to a washing machine.

(ロ) 従来の技術 従来例として、洗濯槽と回転翼とを交互に回転
させることにより、洗濯槽の回転による押し洗い
効果に回転翼の回転による擦り洗い効果を加味し
て、洗浄効果の向上を図つたものが、特開昭62−
240095号公報（D06F33／02）に示されている。(b) Conventional technology As a conventional example, by rotating the washing tub and the rotary blades alternately, the washing effect is improved by adding the scrubbing effect due to the rotation of the rotary blades to the pushing washing effect due to the rotation of the washing tub. JP-A-62-
It is shown in Publication No. 240095 (D06F33/02).

(ハ) 考案が解決しようとする課題 前記従来例にあつては、洗濯槽や回転翼の回転
数が一定であるので、洗濯槽や回転翼の回転で生
起される水流も定型化してしまい、布の動きが規
則的になつて、布絡みが生じ易かつた。(c) Problems to be solved by the invention In the conventional example described above, since the rotational speed of the washing tub and the rotor blades is constant, the water flow generated by the rotation of the washing tub and the rotor blades is also standardized. The movement of the cloth became regular, making it easy for cloth to get tangled.

本考案は、斯かる問題点に鑑み、洗濯機に於い
て、洗濯性能の向上を実現することを課題とす
る。 In view of these problems, the present invention aims to improve the washing performance of a washing machine.

(ホ) 課題を解決するための手段 本考案の洗濯機は、洗濯槽と、該洗濯槽の底部
に配設された回転翼と、前記洗濯槽内への給水手
段と、前記洗濯槽の回転手段と、前記回転翼の回
転手段と、前記各回転手段の回転数の可変手段
と、前記各回転手段及び可変手段の動作を制御す
る制御手段とを備え、前記制御手段は、前記給水
手段による給水後、前記洗濯槽の回転による第１
洗浄動作と、前記回転翼の回転による第２洗浄動
作とを交互に実行する手段と、前記洗濯槽及び回
転翼の前記各洗浄動作毎の回転数を変化させる手
段とを有するものである。(E) Means for Solving the Problems The washing machine of the present invention includes a washing tub, a rotary blade disposed at the bottom of the washing tub, a means for supplying water into the washing tub, and a mechanism for rotating the washing tub. means for rotating the rotary blade, means for varying the rotational speed of each of the rotating means, and control means for controlling the operation of each of the rotating means and the variable means, and the control means is configured to control the operation of the water supply means by the water supply means. After water is supplied, the first rotation is performed by rotating the washing tub.
The cleaning device includes means for alternately performing a cleaning operation and a second cleaning operation by rotating the rotary blade, and means for changing the number of rotations of the washing tub and the rotor for each cleaning operation.

(ホ) 作用 即ち、洗濯槽の回転による押し洗い動作に、回
転翼の回転による擦り洗い動作を加味する。ま
た、洗濯槽及び回転翼の各洗浄動作毎の回転数を
変化させることで、水流に変化を与えて、布の動
きを不規則にし、布が絡みにくいようにする。(e) Effect: In other words, the scrubbing action caused by the rotation of the rotary blade is added to the pushing washing action caused by the rotation of the washing tub. In addition, by changing the number of rotations of the washing tub and rotary blades for each washing operation, the water flow is varied, making the movement of the cloth irregular and making it difficult for the cloth to get tangled.

(ヘ) 実施例 本発明の実施例を各図面に基づいて説明する。(f) Examples Embodiments of the present invention will be described based on the drawings.

第１図の洗濯機に於いて、１は機枠、２は機枠
１内に吊棒３によつて弾性的に支持された外槽、
４は外槽２の底部に設けた排水口、５は前記外槽
２に内設された上拡りのテーパー状の内槽（洗濯
槽に該当する）、６……は前記内槽５の上部にの
み設けた脱水孔、７……は前記内槽５の内壁に沿
つて上下方向に一体形成したバツフル（翼体に該
当する）、８は前記内槽上部のバランスリングで
ある。前記内槽５は前記外槽２内に筒軸９によつ
て軸支されており、該筒軸９と第１駆動モータ１
０とをプーリ１１を介して連結している。１２は
前記内槽５の底部に配設した回転翼であり、その
駆動軸１３は前記筒軸９内を貫通し、第２駆動モ
ータ１４とプーリ１５を介して連結している。１
６は前記筒軸９のブレーキドラム、１７は前記駆
動軸１３のブレーキドラム、１８は前記外槽２底
部近傍に設けたヒータ、１９は前記内外槽５，２
間に給水するための給水装置、２０は上蓋、２１
は前記外槽２内の水位を検知するために外槽２の
底部一角に設けたエアートラツプであり、圧力ホ
ース２２を介して水位スイツチ（図示せず）を接
続している。２３は排水口４と前記内槽５上方と
を連通する循環水路、２４は該循環水路２３中に
設けたポンプであつて、内外槽間の水を汲み上
げ、吐出口２５から吐出させ、前記内槽５内へ供
給する。２６は排水口４と排水ホース２７間に介
在させた排水電磁弁である。 In the washing machine shown in FIG. 1, 1 is a machine frame, 2 is an outer tub elastically supported within the machine frame 1 by a hanging rod 3;
4 is a drain port provided at the bottom of the outer tank 2, 5 is an upwardly expanding tapered inner tank (corresponding to a washing tub) provided inside the outer tank 2, and 6... is a drain port provided at the bottom of the outer tank 2. A dewatering hole is provided only in the upper part, 7... is a buttful (corresponding to a wing body) integrally formed vertically along the inner wall of the inner tank 5, and 8 is a balance ring at the upper part of the inner tank. The inner tank 5 is supported in the outer tank 2 by a cylindrical shaft 9, and the cylindrical shaft 9 and the first drive motor 1
0 through a pulley 11. Reference numeral 12 denotes a rotary blade disposed at the bottom of the inner tank 5, and its drive shaft 13 passes through the inside of the cylindrical shaft 9 and is connected to a second drive motor 14 via a pulley 15. 1
6 is a brake drum of the cylindrical shaft 9, 17 is a brake drum of the drive shaft 13, 18 is a heater provided near the bottom of the outer tank 2, and 19 is a brake drum of the inner and outer tanks 5, 2.
a water supply device for supplying water between the two; 20 is a top lid; 21
An air trap is provided at one corner of the bottom of the outer tank 2 to detect the water level in the outer tank 2, and is connected to a water level switch (not shown) via a pressure hose 22. Reference numeral 23 denotes a circulation waterway that communicates between the drain port 4 and the upper part of the inner tank 5, and 24 is a pump installed in the circulation waterway 23, which pumps up water between the inner and outer tanks, discharges it from the discharge port 25, and pumps the water between the inner and outer tanks. Supplied into tank 5. 26 is a drain solenoid valve interposed between the drain port 4 and the drain hose 27.

第２図は、具体的回路図を示し、２８は各種操
作スイツチ２９からの入力に基づいて各負荷の動
作を制御する制御装置であり、制御の中心となる
マイクロコンピユータと該マイクロコンピユータ
からの指令に基づいて各負荷を動作させるための
ドライブ回路とを実装している。 FIG. 2 shows a specific circuit diagram, in which 28 is a control device that controls the operation of each load based on inputs from various operation switches 29, and a microcomputer that is the center of control and commands from the microcomputer. A drive circuit is implemented to operate each load based on the following.

３０は上蓋２０の開閉に連動する安全スイツ
チ、３１は給水電磁弁、３２は内槽５に対するブ
レーキ作動用のソレノイド、３３は回転体に対す
るブレーキ作動用のソレノイド、３４はポンプモ
ータである。３５は水位スイツチであり、水位が
規定水位に達すると接点がNO側からNC側へ切
換わり、同時にヒータ１８への通電回路を断つ。
３６は温度調節用のサーミスタ、そして３７は前
記第１及び第２駆動モータ１０，１４の回転数に
係わる周波数を制御する周波数変換装置であり、
モータ１０，１４の回転数が周波数の高低に比例
することから、60Hz（50Hz）の電源周波数を変換
し、所望の回転数を得るためのものである。 30 is a safety switch linked to opening and closing of the upper lid 20, 31 is a water supply solenoid valve, 32 is a solenoid for operating a brake on the inner tank 5, 33 is a solenoid for operating a brake on a rotating body, and 34 is a pump motor. 35 is a water level switch, and when the water level reaches a specified water level, the contact switches from the NO side to the NC side, and at the same time cuts off the energization circuit to the heater 18.
36 is a thermistor for temperature adjustment, and 37 is a frequency converter that controls the frequency related to the rotation speed of the first and second drive motors 10 and 14.
Since the rotational speed of the motors 10 and 14 is proportional to the frequency, the power supply frequency of 60Hz (50Hz) is converted to obtain the desired rotational speed.

斯かる構成に基づいて、その動作を説明する。 The operation will be explained based on this configuration.

スタートスイツチ（図示せず）を操作すると、
給水電磁弁３１が開放し、内外槽５，２間に給水
が開始される。水位が規定値に達し、圧力スイツ
チ３５がNO側からNC側に切換わると、ヒータ
１８が断電されて水の加熱を停止する。同時に給
水電磁弁３１が閉塞し、ポンプモータ３４が作動
し始め、内外槽５，２間の水を吐出口２５から内
槽５内に移送する。 When you operate the start switch (not shown),
The water supply electromagnetic valve 31 is opened, and water supply between the inner and outer tanks 5 and 2 is started. When the water level reaches a specified value and the pressure switch 35 is switched from the NO side to the NC side, the heater 18 is cut off and stops heating the water. At the same time, the water supply electromagnetic valve 31 is closed, the pump motor 34 starts operating, and the water between the inner and outer tanks 5 and 2 is transferred from the discharge port 25 into the inner tank 5.

そして、第３図の通り、前記第１駆動モータ１
０に通電し、内槽５を右回転（約２〜４秒）−停
止（約１〜３秒）−左回転（約２〜４秒）−停止の
サイクルを約２〜３分間繰返し（この内槽の回転
を第１洗浄動作と称す）、この間前記停止時に前
記第２駆動モータ１４に通電して、前記回転翼１
２を内槽５の回転とは逆方向（内槽５が右回転し
ていたのなら左に回転し、左回転していたのなら
右に回転する）に回転させることにより（この回
転翼の回転を第２洗浄動作と称す）、洗浄工程を
行なう。即ち、洗浄工程に於いては、前記第１洗
浄動作と第２洗浄動作とを交互に繰返し行なつて
いる。 As shown in FIG. 3, the first drive motor 1
0, and repeat the cycle of rotating the inner tank 5 clockwise (about 2 to 4 seconds) - stopping (about 1 to 3 seconds) - counterclockwise (about 2 to 4 seconds) - stopping for about 2 to 3 minutes (this cycle (The rotation of the inner tank is referred to as a first cleaning operation).
2 in the opposite direction to the rotation of the inner tank 5 (if the inner tank 5 was rotating to the right, it will rotate to the left, and if it was rotating to the left, it will rotate to the right). (referred to as a second cleaning operation), a cleaning process is performed. That is, in the cleaning process, the first cleaning operation and the second cleaning operation are repeated alternately.

更に、本実施例では、前記周波数変換装置３７
により、第４図の通り、前記内槽５及び回転翼１
２の各回転数を段階的に変化させる。即ち、前記
第１洗浄動作を行なう毎に、内槽５の回転数を
60r.p.m→100→140→180→140→100→60→100→
……と変化させ、前記第２洗浄工程を行なう毎
に、回転翼１２の回転数を180r.p.m→100→60→
100→180→100→……と変化させる。 Furthermore, in this embodiment, the frequency conversion device 37
Accordingly, as shown in FIG. 4, the inner tank 5 and the rotor blade 1
2. Change each rotation speed stepwise. That is, each time the first cleaning operation is performed, the rotation speed of the inner tank 5 is changed.
60r.pm→100→140→180→140→100→60→100→
..., and each time the second cleaning step is performed, the rotation speed of the rotor blade 12 is changed from 180r.pm→100→60→
Change as 100→180→100→...

この洗浄工程中、内槽５内の洗濯物は、内槽５
の回転に伴なつて、前記バツフル７と回転翼１２
との間で押し洗われ、更に槽の停止と共にバツフ
ル７及び回転翼１２に衝突し、以つて洗浄が行な
われる。そして、内槽５の停止時に於いて、回転
翼１２を内槽５の回転と逆の方向に回転させるこ
とにより、内槽５の回転時にねじれ、絡みつつあ
つた洗濯物を解きほぐし、同時に洗濯物を擦り洗
う。 During this washing process, the laundry in the inner tub 5
As the baffle 7 and rotor blade 12 rotate,
When the tank is stopped, the water collides with the baffle 7 and the rotary blade 12, thereby performing washing. When the inner tub 5 is stopped, the rotary blades 12 are rotated in the opposite direction to the rotation of the inner tub 5, thereby loosening the laundry that has become twisted and tangled during the rotation of the inner tub 5, and at the same time loosening the laundry. Scrub and wash.

更に、内槽５及び回転翼１２は、回転する毎に
その回転数が変化するので、夫々の回転時に生起
される水流の強さが異なつて、槽内に複雑な水流
が発生する。従つて、洗濯物の動きが不規則にな
つて、絡みつきにくくなる。 Further, since the rotational speed of the inner tank 5 and the rotary blade 12 changes each time they rotate, the strength of the water flow generated during each rotation differs, resulting in a complicated water flow within the tank. Therefore, the movement of the laundry becomes irregular and it becomes difficult for the laundry to get tangled.

ここで、前記内槽５の停止の際、前記第１駆動
モータ１０への通電を断つだけでは槽５が惰性で
回転してしまい、この惰性回転の方向は、洗濯物
の浮遊方向と同じであるので、洗濯物のバツフル
７に対する衝突力が弱まり、洗浄力も低下する。
そこで、第１駆動モータ１０への通電を断つと同
時に内槽５の回転にブレーキをかける。このブレ
ーキ手段は、従来より周知技術であるソレノイド
３２への通電を断つことによりブレーキバンドを
締め付ける機械式手段と第１駆動モータ１０に直
流電流を印加する電気式手段とを併用する。 Here, when the inner tub 5 is stopped, simply cutting off the power to the first drive motor 10 causes the tub 5 to rotate due to inertia, and the direction of this inertial rotation is the same as the floating direction of the laundry. Therefore, the collision force of the laundry against the washcloth 7 is weakened, and the cleaning power is also reduced.
Therefore, the power supply to the first drive motor 10 is cut off, and at the same time, a brake is applied to the rotation of the inner tank 5. This braking means uses a combination of mechanical means that tightens the brake band by cutting off the current to the solenoid 32 and electrical means that applies a direct current to the first drive motor 10, which are conventionally well known techniques.

こうして、内槽５を急激に停止させることによ
り、洗濯物のバツフル７に対する衝突力を増し、
“たたき洗い”の効果を向上させる。 In this way, by abruptly stopping the inner tub 5, the collision force of the laundry against the buttful 7 is increased,
Improves the effectiveness of “pound washing”.

洗浄工程が終了すると、次に内槽５を高速で右
方向回転させることによる約30秒〜１分の脱液工
程が開始する。即ち、内槽の高速回転に伴つて槽
内の洗濯液が遠心力により槽のテーパー形状に沿
つて脱水孔６……及び槽上方開口部から放出さ
れ、脱液が完了する。 When the cleaning process is completed, a deliquidation process starts for approximately 30 seconds to 1 minute by rotating the inner tank 5 in the clockwise direction at high speed. That is, as the inner tub rotates at high speed, the washing liquid in the tub is discharged from the dewatering holes 6 and the upper opening of the tub due to centrifugal force along the tapered shape of the tub, and the draining is completed.

この脱液工程では、洗濯物の繊維間を高速で洗
濯液が通過することにより、汚れが洗濯物から分
離し、除去される。 In this dewatering process, dirt is separated from the laundry and removed by passing the laundry liquid at high speed between the fibers of the laundry.

さて、前記の放出された洗濯液は内外槽５，２
間に貯留されており、この洗濯液を再びポンプ２
４で内槽５内に復帰させると同時に第２回目の洗
浄工程（約１〜３分）が開始する。 Now, the discharged washing liquid is transferred to the inner and outer tubs 5 and 2.
This washing liquid is pumped again to pump 2.
4, the second cleaning process (approximately 1 to 3 minutes) starts at the same time as returning to the inner tank 5.

而して、洗浄工程と脱液工程とが繰返し２回行
なわれ、最終の脱液工程時に排水電磁弁２６が開
放することにより洗濯液が排水され、洗濯物の
“洗い”が終了する。 Thus, the washing step and the draining step are repeated twice, and during the final draining step, the drain electromagnetic valve 26 is opened to drain the washing liquid, and the "washing" of the laundry is completed.

以上の如く、本実施例の洗濯機によれば、第５
図乃至第７図の実験結果から証明される通り、従
来に比べて優れた洗浄性能を得ることができる。
尚、図で実線は本実施例を示し、点線は従来例
（回転数を段階的に変化させないもの）である。
また第７図の減少率とは、洗濯前後の重量差を比
率にしたものであり、布の損傷度が高いほど洗濯
前後の重量差が大きいので、この減少率が高くな
る。 As described above, according to the washing machine of this embodiment, the fifth
As evidenced by the experimental results shown in FIGS. 7 to 7, superior cleaning performance can be obtained compared to the conventional method.
In the figure, the solid line shows this embodiment, and the dotted line shows the conventional example (in which the rotational speed is not changed stepwise).
The reduction rate in FIG. 7 is a ratio of the weight difference before and after washing, and the higher the degree of damage to the fabric, the larger the weight difference before and after washing, so the reduction rate becomes higher.

(ト) 考案の効果 本考案の洗濯機は、洗濯槽の回転による押し洗
い動作に、回転翼の回転による擦り洗い動作を加
味したものであるので、洗浄率の高いものであ
る。(g) Effects of the invention The washing machine of the invention has a high cleaning efficiency because it combines the push washing action caused by the rotation of the washing tub with the scrubbing action caused by the rotation of the rotary blades.

しかも、洗濯槽及び回転翼の各洗浄動作毎の回
転数を変化させることで、水流に変化を与えるの
で、布の動きが不規則になつて、布が絡みつきに
くい。 Moreover, by changing the rotational speed of the washing tub and the rotary blades for each washing operation, the water flow is changed, so that the movement of the cloth becomes irregular and it is difficult for the cloth to get tangled.

従つて、総じて、洗濯性能に優れたものであ
る。 Therefore, overall, the washing performance is excellent.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の洗濯機の内部機構図、第２図
は同電気回路図、第３図及び第４図は同タイムチ
ヤート、第５図乃至第７図は実験に基づく洗浄特
性図である。 ５……内槽（洗濯槽）、１０……第１駆動モー
タ（洗濯槽の回転手段）、１２……回転翼、１４
……第２駆動モータ（回転翼の回転手段）、１９
……給水装置（給水手段）、２８……制御装置
（制御手段）、３７……周波数変換装置（回転数の
可変手段）。 Figure 1 is an internal mechanism diagram of the washing machine of the present invention, Figure 2 is its electric circuit diagram, Figures 3 and 4 are its time charts, and Figures 5 to 7 are cleaning characteristics diagrams based on experiments. be. 5... Inner tub (washing tub), 10... First drive motor (rotating means for the washing tub), 12... Rotating blade, 14
...Second drive motor (rotor blade rotation means), 19
... Water supply device (water supply means), 28 ... Control device (control means), 37 ... Frequency conversion device (rotational speed variable means).

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 洗濯槽と、該洗濯槽の底部に配設された回転翼
と、前記洗濯槽内への給水手段と、前記洗濯槽の
回転手段と、前記回転翼の回転手段と、前記各回
転手段の回転数の可変手段と、前記各回転手段及
び可変手段の動作を制御する制御手段とを備え、
前記制御手段は、前記給水手段による給水後、前
記洗濯槽の回転による第１洗浄動作と、前記回転
翼の回転による第２洗浄動作とを交互に実行する
手段と、前記洗濯槽及び回転翼の前記各洗浄動作
毎の回転数を変化させる手段とを有することを特
徴とする洗濯機。 A washing tub, a rotary blade disposed at the bottom of the washing tub, a means for supplying water into the washing tub, a means for rotating the washing tub, a means for rotating the rotary blade, and a rotation of each of the rotating means. a control means for controlling the operation of each of the rotating means and the variable means,
The control means includes means for alternately performing a first washing operation by rotating the washing tub and a second washing action by rotating the rotary blade after water is supplied by the water supplying means; A washing machine comprising: means for changing the number of rotations for each washing operation.