JP3972510B2

JP3972510B2 - Washing machine

Info

Publication number: JP3972510B2
Application number: JP10625999A
Authority: JP
Inventors: 光市久保; 一利足立; 久萩原
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 1999-04-14
Filing date: 1999-04-14
Publication date: 2007-09-05
Anticipated expiration: 2019-04-14
Also published as: JP2000296288A

Description

【０００１】
【発明の属する技術分野】
本発明は、洗剤を効率的に溶解させて洗濯する洗濯機に関する。
【０００２】
【従来の技術】
従来、洗濯機は図４に示すように構成していた。以下、その構成について説明する。
【０００３】
図４に示すように、外槽２３は、回転自在に配設した洗濯兼脱水槽２４を内包し、吊り棒２５により洗濯機外枠２６に吊り下げている。モータ（駆動手段）２７は、Ｖベルト２８および減速機構２９を介して洗濯兼脱水槽２４および洗濯兼脱水槽２４の内底部に回転自在に配設した攪拌翼３０を回転駆動する。カバー体３１は、外槽２３の上部に設け、散水用の吐出部を形成するものである。
【０００４】
給水弁３２は、洗濯兼脱水槽２４内に水を給水するものであり、水位検知手段３３は、外槽２３内の水位を検知するもので、排水弁３４は外槽２３内の洗濯水を排水するものである。洗剤通路部３５は上方から粉末合成洗剤などを投入することにより、洗剤を外槽２３と洗濯兼脱水槽２４との間に落下させるよう構成しており、洗剤を直接投下させる手段を形成している。環状の流体バランサー３６は脱水時の振動を低減するものである。制御装置３７は、モータ２７、排水弁３４、給水弁３２などを制御して、洗濯、すすぎ、脱水の各行程を逐次制御するものである。
【０００５】
上記構成において動作を説明すると、洗濯兼脱水槽２４内に洗濯物を投入し、洗剤通路部３５に洗剤を投入した後、運転を開始すると、給水弁３２を作動させて給水を開始し、洗濯兼脱水槽２４が回転を始める。水位検知手段３３が所定水位を検知すると、給水弁３２の動作を停止し、洗濯兼脱水槽２４の回転数を所定回転数まで上昇させる。
【０００６】
洗濯兼脱水槽２４の回転数が上昇することにより、外槽２３と洗濯兼脱水槽２４との間の洗剤（洗濯水）を攪拌する攪拌する力が増大し、外槽２３と洗濯兼脱水槽２４との間の洗剤は溶解される。洗濯兼脱水槽２４の回転を所定時間行い、洗濯兼脱水槽２４の回転を停止させ、再び給水弁３２を作動させて給水を開始し、水位検知手段３３が洗濯時の水位を検知すると給水弁３２の動作を停止し、攪拌翼３０を動作させ、洗濯行程を開始する。
【０００７】
【発明が解決しようとする課題】
しかしながら、この構成の洗濯機の場合、バケツ等で洗濯兼脱水槽２４の回転により洗濯兼脱水槽２４と外槽２３との間の洗剤を溶解させる行程を行う所定水位以上まで給水された後、運転を開始された場合、すなわち運転開始以前に洗濯兼脱水槽２４内に洗濯兼脱水槽２４の回転により洗濯兼脱水槽２４と外槽２３との間の洗剤を溶解させる行程を行う所定水位以上まで水があった場合、洗濯兼脱水槽２４の回転により洗濯兼脱水槽２４と外槽２３との間の洗剤を溶解させる行程は行われないまま、洗濯行程が開始されるため、外槽２３と洗濯兼脱水槽２４との間に落下された洗剤は溶解されず、満足な洗浄性能は得られないという問題を有していた。
【０００８】
本発明は上記課題を解決するもので、洗濯行程前に洗剤溶解性を高めることで、洗浄性能を向上し、洗いむらを低減することを目的としている。
【０００９】
【課題を解決するための手段】
本発明は上記目的を達成するために、洗濯物を収容する洗濯兼脱水槽を外槽内に回転自在に収容し、水位検知手段からの情報を入力するとともに洗濯兼脱水槽を駆動する駆動手段、洗濯兼脱水槽内に給水する給水弁などの動作を制御手段により制御して行程を制御するよう構成し、洗濯兼脱水槽と外槽との間に洗剤を投下させる洗剤通路部を有し、制御手段は、運転開始時において、外槽内の水位が所定水位未満の場合は、給水弁を制御して所定水位まで給水した後、洗濯兼脱水槽を回転させることで洗濯兼脱水槽と外槽の間の洗剤を溶解させる行程を実行し、外槽内の水位が所定水位以上の場合は、給水することなく洗濯兼脱水槽を回転させることで洗濯兼脱水槽と外槽との間の洗剤を溶解させる行程を実行するようにしたである。
【００１０】
これにより、洗濯行程前に洗剤溶解性を高めることができ、洗浄性能を向上し、洗いむらを低減することができる。
【００１１】
【発明の実施の形態】
本発明の請求項１に記載の発明は、洗濯物を収容する洗濯兼脱水槽と、前記洗濯兼脱水槽を回転自在に収容した外槽と、前記洗濯兼脱水槽を回転駆動する駆動手段と、前記洗濯兼脱水槽内に給水する給水弁と、前記外槽内の水位を検知する水位検知手段と、前記水位検知手段からの情報を入力するとともに前記駆動手段、前記給水弁などの動作を制御し行程を制御する制御手段と、前記洗濯兼脱水槽と前記外槽との間に洗剤を投下させる洗剤通路部とを備え、前記制御手段は、運転開始時において、前記外槽内の水位が所定水位未満の場合は、前記給水弁を制御して前記所定水位まで給水した後、前記洗濯兼脱水槽を回転させることで前記洗濯兼脱水槽と前記外槽の間の洗剤を溶解させる行程を実行し、前記外槽内の水位が所定水位以上の場合は、給水することなく前記洗濯兼脱水槽を回転させることで前記洗濯兼脱水槽と前記外槽との間の洗剤を溶解させる行程を実行するようにしたものであり、バケツ等で給水された後、運転を開始された場合でも、洗剤を溶解させる行程を洗濯行程前に行うので、洗濯行程前に洗剤溶解性を高めることができ、洗浄性能を向上し、洗いむらを低減することができる。
【００１２】
【実施例】
以下、本発明の一実施例について、図面を参照しながら説明する。
【００１３】
図１に示すように、外槽１は、回転自在に配設した洗濯兼脱水槽２を内包し、吊り棒３により洗濯機外枠４に吊り下げている。モータ（駆動手段）５は、Ｖベルト６および減速機構７を介して洗濯兼脱水槽２および洗濯兼脱水槽２の内底部に回転自在に配設した攪拌翼８を回転駆動する。カバー体９は、外槽１の上部に設け、散水用の吐出部を形成するものである。
【００１４】
給水弁１０は、洗濯兼脱水槽２内に水を給水するものであり、水位検知手段１１は、外槽１内の水位を検知するもので、排水弁１２は外槽１内の洗濯水を排水するものである。洗剤通路部１３は上方から粉末合成洗剤などを投入することにより、洗剤を外槽１と洗濯兼脱水槽２との間に落下させるよう構成しており、洗剤を直接投下させる手段を形成している。環状の流体バランサー１４は脱水時の振動を低減するものである。
【００１５】
制御装置１５は、図２に示すように構成しており、制御手段１６は、マイクロコンピュータで構成し、パワースイッチング手段１７を介してモータ５、給水弁１０、排水弁１２などの動作を制御し、洗濯、すすぎ、脱水などの一連の行程を逐次制御する。入力設定手段１８は、運転コース等を設定するもので、制御手段１６は入力設定手段１８からの情報を入力して、その情報を基に表示手段１９で表示して使用者に知らせる。記憶手段２０は、制御手段１６により制御するのに必要なデータを記憶している。なお、２１は商用電源、２２は電源スイッチである。
【００１６】
ここで、制御手段１６は、通常、運転を開始したとき、所定水位Ｓ１まで給水し、洗濯兼脱水槽２を回転させて洗濯兼脱水槽２と外槽１との間の洗剤を溶解させる行程を行い、その後、所定水位Ｓａまで給水して洗濯行程を行うようにし、さらに、運転開始以前に、洗濯兼脱水槽２内に所定水位Ｓ１以上の水があった場合には、洗濯行程前に洗濯兼脱水槽２を回転させて洗濯兼脱水槽２と外槽１との間の洗剤を溶解させる行程を行うようにしている。
【００１７】
上記構成において、図３を参照にしながら動作を説明すると、洗濯兼脱水槽２内に洗濯物を投入し、洗剤通路部１３に洗剤を投入した後、洗濯兼脱水槽２の回転により洗濯兼脱水槽２と外槽１との間の洗剤を溶解させる行程を行う所定水位Ｓ１以上の水位Ｓ２までバケツ等で給水し、運転を開始された場合、水位検知手段１１が所定水位Ｓ１以上の水位であると検知すると、洗濯兼脱水槽２を回転させ、洗濯兼脱水槽２の回転数を所定回転数Ｒａまで上昇させる。
【００１８】
洗濯兼脱水槽２を回転させることにより、外槽１と洗濯兼脱水槽２との間の洗剤（洗濯水）を攪拌する攪拌する力が生じ、外槽１と洗濯兼脱水槽２との間の洗剤は溶解される。洗濯兼脱水槽２の回転を所定時間Ｔａ行い、洗濯兼脱水槽２の回転を停止させ、給水弁１０を作動させて給水を開始し、水位検知手段１１が洗濯時の水位Ｓａを検知すると給水弁１０の動作を停止し、攪拌翼８を動作させ、洗濯行程を開始する。
【００１９】
また、バケツ等で給水され、洗濯時の水位Ｓａ以上の水位から運転を開始された場合には、洗濯兼脱水槽２を回転させ、洗濯兼脱水槽２の回転数を上昇させ、外槽１と洗濯兼脱水槽２との間の洗剤を溶解した後、攪拌翼８を動作させ、洗濯行程を開始する。
【００２０】
さらに、バケツ等で給水され、洗濯兼脱水槽２の回転により洗濯兼脱水槽２と外槽１との間の洗剤を溶解させる行程を行う所定水位Ｓ１以下の水位から運転を開始された場合には、所定水位Ｓ１まで給水後、洗濯兼脱水槽２を回転させ、洗濯兼脱水槽２の回転数を上昇させ、外槽１と洗濯兼脱水槽２との間の洗剤を溶解した後、給水を開始し、洗濯時の水位Ｓａに到達後、攪拌翼８を動作させ、洗濯行程を開始する。
【００２１】
このように、バケツ等で給水された後、運転を開始された場合でも、洗濯兼脱水槽２の回転により洗濯兼脱水槽２と外槽１との間の洗剤を溶解させる行程を洗濯行程前に行うので、洗濯行程前に洗剤溶解性を高めることができ、洗浄性能を向上し、洗いむらを低減することができる。
【００２２】
なお、本実施例では、洗濯時の水位Ｓａを検知すると、攪拌翼８を動作させて洗濯行程を開始するよう構成しているが、洗濯行程で、洗濯兼脱水槽２を回転させて、その遠心力により洗濯水を循環させて洗濯するようにしてもよい。
【００２３】
また、本実施例では、運転開始以前に洗濯兼脱水槽２内に水がある場合として、バケツ等で給水された場合としているが、使用者が吸水ポンプを使って給水した場合、洗濯後あるいはすすぎ後に排水せず再び洗濯を行った場合などであっても同様である。
【００２４】
【発明の効果】
以上のように本発明によれば、洗濯物を収容する洗濯兼脱水槽と、前記洗濯兼脱水槽を回転自在に収容した外槽と、前記洗濯兼脱水槽を回転駆動する駆動手段と、前記洗濯兼脱水槽内に給水する給水弁と、前記外槽内の水位を検知する水位検知手段と、前記水位検知手段からの情報を入力するとともに前記駆動手段、前記給水弁などの動作を制御し行程を制御する制御手段と、前記洗濯兼脱水槽と前記外槽との間に洗剤を投下させる洗剤通路部とを備え、前記制御手段は、運転開始時において、前記外槽内の水位が所定水位未満の場合は、前記給水弁を制御して前記所定水位まで給水した後、前記洗濯兼脱水槽を回転させることで前記洗濯兼脱水槽と前記外槽の間の洗剤を溶解させる行程を実行し、前記外槽内の水位が所定水位以上の場合は、給水することなく前記洗濯兼脱水槽を回転させることで前記洗濯兼脱水槽と前記外槽との間の洗剤を溶解させる行程を実行するようにしたから、バケツ等で給水された後、運転を開始された場合でも、洗剤を溶解させる行程を洗濯行程前に行うので、洗濯行程前に洗剤溶解性を高めることができ、洗浄性能を向上し、洗いむらを低減することができる。
【図面の簡単な説明】
【図１】本発明の一実施例の洗濯機の縦断面図
【図２】同洗濯機のブロック回路図
【図３】同洗濯機の要部動作タイムチャート
【図４】従来の洗濯機の縦断面図
【符号の説明】
１外槽
２洗濯兼脱水槽
５モータ（駆動手段）
１３洗剤通路部（洗剤を投下させる手段）
１６制御手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a washing machine that efficiently dissolves detergent and performs washing.
[0002]
[Prior art]
Conventionally, a washing machine is configured as shown in FIG. Hereinafter, the configuration will be described.
[0003]
As shown in FIG. 4, the outer tub 23 includes a washing / dehydrating tub 24 that is rotatably arranged, and is suspended from a washing machine outer frame 26 by a suspension bar 25. The motor (driving means) 27 rotationally drives the washing / dehydrating tub 24 and the stirring blade 30 rotatably disposed on the inner bottom portion of the washing / dehydrating tub 24 via the V belt 28 and the speed reduction mechanism 29. The cover body 31 is provided in the upper part of the outer tank 23, and forms the discharge part for watering.
[0004]
The water supply valve 32 supplies water into the washing / dehydrating tub 24, the water level detection means 33 detects the water level in the outer tub 23, and the drain valve 34 supplies the washing water in the outer tub 23. It is what drains. The detergent passage 35 is configured to drop the detergent between the outer tub 23 and the washing / dehydrating tub 24 by adding powdered synthetic detergent or the like from above, and forms a means for directly dropping the detergent. Yes. The annular fluid balancer 36 reduces vibration during dehydration. The control device 37 controls the motor 27, the drain valve 34, the water supply valve 32, etc., and sequentially controls each process of washing, rinsing and dehydration.
[0005]
The operation in the above configuration will be described. When the laundry is put into the washing and dehydrating tub 24 and the detergent is inserted into the detergent passage 35, when the operation is started, the water supply valve 32 is operated to start the water supply, and the washing is started. The cum dewatering tank 24 starts rotating. When the water level detection means 33 detects the predetermined water level, the operation of the water supply valve 32 is stopped, and the rotational speed of the washing and dewatering tub 24 is increased to the predetermined rotational speed.
[0006]
As the rotational speed of the washing / dehydrating tub 24 increases, the stirring force for stirring the detergent (washing water) between the outer tub 23 and the washing / dehydrating tub 24 increases. The detergent between 24 is dissolved. When the washing / dehydrating tub 24 is rotated for a predetermined time, the rotation of the washing / dehydrating tub 24 is stopped, the water supply valve 32 is actuated again to start water supply, and when the water level detection means 33 detects the water level during washing, the water supply valve The operation | movement of 32 is stopped, the stirring blade 30 is operated, and the washing process is started.
[0007]
[Problems to be solved by the invention]
However, in the case of a washing machine of this configuration, after being supplied to a predetermined water level or higher in which a detergent is dissolved between the washing / dehydrating tub 24 and the outer tub 23 by rotation of the washing / dehydrating tub 24 with a bucket or the like, When the operation is started, that is, before the operation is started, the washing / dehydration tub 24 is rotated in the washing / dehydration tub 24 to perform the process of dissolving the detergent between the washing / dehydration tub 24 and the outer tub 23. When there is water until the washing / dehydration tank 24 is rotated, the washing process is started without the process of dissolving the detergent between the washing / dehydration tank 24 and the outer tank 23 being performed. The detergent dropped between the washing / dehydrating tub 24 is not dissolved, and satisfactory cleaning performance cannot be obtained.
[0008]
This invention solves the said subject, and aims at improving washing | cleaning performance and reducing washing nonuniformity by improving detergent solubility before a washing process.
[0009]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a washing / dehydrating tub for storing laundry in a rotatable manner in the outer tub, inputs information from the water level detection means, and drives the washing / dehydrating tub. The operation of the water supply valve for supplying water into the washing / dehydrating tub is controlled by the control means to control the stroke, and the detergent passage section for dropping the detergent between the washing / dehydrating tub and the outer tub is provided. When the water level in the outer tub is less than the predetermined water level at the start of operation, the control means controls the water supply valve to supply water to the predetermined water level, and then rotates the washing / dehydration tub to rotate the washing / dehydration tub. run the process of dissolving the detergent between the outer tank, when the water level in the outer tub is above a predetermined level, between the washing and dewatering tank and outer tank washing and dewatering tank by rotating without water it was so executes step to dissolve the detergent.
[0010]
Thereby, detergent solubility can be improved before a washing process, cleaning performance can be improved, and washing unevenness can be reduced.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention includes a washing and dewatering tub for storing laundry, an outer tub for rotatably storing the washing and dewatering tub, and a driving means for rotationally driving the washing and dewatering tub. , A water supply valve for supplying water into the washing and dewatering tub, a water level detecting means for detecting the water level in the outer tub, and information from the water level detecting means are inputted and the operation of the driving means , the water supply valve, etc. A control means for controlling and controlling the stroke, and a detergent passage section for dropping a detergent between the washing and dewatering tub and the outer tub, the control means at the start of operation the water level in the outer tub Is less than a predetermined water level, the process of dissolving the detergent between the washing / dehydrating tub and the outer tub by rotating the washing / dehydrating tub after controlling the water supply valve to supply water to the predetermined water level When the water level in the outer tub is equal to or higher than the predetermined water level It is obtained by so as to perform the step of dissolving the detergent between the outer tub and the washing and dewatering tank by rotating the washing and dewatering tank without water supply, which is water in a bucket or the like Later, even when the operation is started, since the process of dissolving the detergent is performed before the washing process, the solubility of the detergent can be increased before the washing process, and the washing performance can be improved and the unevenness of washing can be reduced. .
[0012]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0013]
As shown in FIG. 1, the outer tub 1 includes a washing and dewatering tub 2 that is rotatably arranged, and is suspended from a washing machine outer frame 4 by a suspension bar 3. The motor (driving means) 5 rotationally drives the washing / dehydrating tub 2 and the agitation blade 8 rotatably disposed on the inner bottom portion of the washing / dehydrating tub 2 via the V belt 6 and the speed reduction mechanism 7. The cover body 9 is provided in the upper part of the outer tub 1, and forms the discharge part for watering.
[0014]
The water supply valve 10 supplies water into the washing and dewatering tub 2, the water level detection means 11 detects the water level in the outer tub 1, and the drain valve 12 supplies the washing water in the outer tub 1. It is what drains. The detergent passage unit 13 is configured to drop the detergent between the outer tub 1 and the washing and dehydrating tub 2 by adding powdered synthetic detergent or the like from above, and forms a means for directly dropping the detergent. Yes. The annular fluid balancer 14 reduces vibration during dehydration.
[0015]
The control device 15 is configured as shown in FIG. 2, and the control means 16 is constituted by a microcomputer, and controls the operation of the motor 5, the water supply valve 10, the drain valve 12, etc. via the power switching means 17. A series of processes such as washing, rinsing and dehydration are sequentially controlled. The input setting means 18 sets a driving course or the like, and the control means 16 inputs information from the input setting means 18 and displays it on the display means 19 based on the information to notify the user. The storage unit 20 stores data necessary for control by the control unit 16. In addition, 21 is a commercial power source and 22 is a power switch.
[0016]
Here, the control means 16 normally supplies water up to a predetermined water level S1 when the operation is started, and rotates the washing / dehydrating tub 2 to dissolve the detergent between the washing / dehydrating tub 2 and the outer tub 1. After that, water is supplied to the predetermined water level Sa to perform the washing process, and before the start of operation, if there is water in the washing / dehydrating tub 2 at the predetermined water level S1 or more, before the washing process The washing / dehydrating tub 2 is rotated so that the detergent between the washing / dehydrating tub 2 and the outer tub 1 is dissolved.
[0017]
In the above configuration, the operation will be described with reference to FIG. 3. After the laundry is put into the washing and dehydrating tub 2 and the detergent is put into the detergent passage portion 13, the washing and dehydrating tub 2 is rotated to rotate the washing and dehydrating tank 2. When water is supplied to the water level S2 above the predetermined water level S1 that performs the process of dissolving the detergent between the water tank 2 and the outer tank 1 and the operation is started, the water level detection means 11 is at the water level above the predetermined water level S1. When it is detected, the washing / dehydrating tub 2 is rotated, and the rotation speed of the washing / dehydrating tub 2 is increased to a predetermined rotation number Ra.
[0018]
By rotating the washing / dehydrating tub 2, a stirring force for stirring the detergent (washing water) between the outer tub 1 and the washing / dehydrating tub 2 is generated, and between the outer tub 1 and the washing / dehydrating tub 2. The detergent is dissolved. The rotation of the washing / dehydrating tub 2 is performed for a predetermined time Ta, the rotation of the washing / dehydrating tub 2 is stopped, the water supply valve 10 is operated to start water supply, and the water level detection means 11 detects the water level Sa at the time of washing. The operation of the valve 10 is stopped, the stirring blade 8 is operated, and the washing process is started.
[0019]
Further, when water is supplied by a bucket or the like and the operation is started from the water level Sa or higher at the time of washing, the washing and dewatering tub 2 is rotated, the number of rotations of the washing and dewatering tub 2 is increased, and the outer tub 1 After the detergent between the washing and dewatering tank 2 is dissolved, the stirring blade 8 is operated to start the washing process.
[0020]
Furthermore, when the operation is started from a water level below a predetermined water level S1 in which water is supplied in a bucket or the like and a process of dissolving the detergent between the washing / dehydrating tub 2 and the outer tub 1 by the rotation of the washing / dehydrating tub 2 is performed. After supplying water to a predetermined water level S1, the washing and dewatering tub 2 is rotated, the rotation speed of the washing and dewatering tub 2 is increased, and the detergent between the outer tub 1 and the washing and dewatering tub 2 is dissolved, and then water is supplied. After the water level Sa at the time of washing is reached, the stirring blade 8 is operated to start the washing process.
[0021]
Thus, even when the operation is started after water is supplied with a bucket or the like, the process of dissolving the detergent between the washing / dehydrating tub 2 and the outer tub 1 by the rotation of the washing / dehydrating tub 2 is performed before the washing process. Therefore, it is possible to improve the detergent solubility before the washing process, improve the cleaning performance, and reduce the unevenness of washing.
[0022]
In the present embodiment, when the water level Sa at the time of washing is detected, the stirring blade 8 is operated to start the washing process. In the washing process, the washing and dewatering tub 2 is rotated, and the washing process is started. You may make it wash by circulating washing water with a centrifugal force.
[0023]
In the present embodiment, the case where there is water in the washing and dehydrating tub 2 before the start of operation is the case where water is supplied by a bucket or the like, but when the user supplies water using a water absorption pump, The same applies to cases where washing is performed again without rinsing after rinsing.
[0024]
【The invention's effect】
According to the invention as above, the washing and dewatering tank for accommodating the laundry, an outer tub and rotatably housing the washing and dewatering tank, a driving means for rotating the washing and dewatering tank, wherein A water supply valve for supplying water into the washing and dehydrating tub, a water level detecting means for detecting the water level in the outer tub, and information from the water level detecting means are inputted , and the operation of the driving means , the water supply valve, etc. is controlled. A control means for controlling a stroke; and a detergent passage for dropping a detergent between the washing and dewatering tub and the outer tub, and the control means has a predetermined water level in the outer tub at the start of operation. When the water level is lower than the water level, the water supply valve is controlled to supply water to the predetermined water level, and then the washing / dehydrating tub is rotated to dissolve the detergent between the washing / dehydrating tub and the outer tub. When the water level in the outer tub is equal to or higher than the predetermined water level It is so arranged to perform the step of dissolving the detergent between said outer tub wherein the washing and dewatering tank by rotating the washing and dewatering tank without water supply to, after being water with a bucket or the like, the operation Even when the process is started, since the process of dissolving the detergent is performed before the washing process, the solubility of the detergent can be improved before the washing process, the washing performance can be improved, and the washing unevenness can be reduced.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a washing machine according to an embodiment of the present invention. FIG. 2 is a block circuit diagram of the washing machine. FIG. 3 is an operation time chart of main parts of the washing machine. Vertical section [Explanation of symbols]
1 Outer tub 2 Washing / dehydration tub 5 Motor (driving means)
13 Detergent passage (means for dropping detergent)
16 Control means

Claims

A washing / dehydrating tub for storing laundry, an outer tub for rotatably storing the washing / dehydrating tub, a driving means for rotationally driving the washing / dehydrating tub, and a water supply valve for supplying water into the washing / dehydrating tub Water level detection means for detecting the water level in the outer tub, control means for inputting information from the water level detection means and controlling the operation of the drive means , the water supply valve, etc., and the stroke, and the washing A detergent passage section for dropping a detergent between the cum dewatering tank and the outer tank, and the control means is configured to turn the water supply valve when the water level in the outer tank is lower than a predetermined water level at the start of operation. After controlling and supplying water to the predetermined water level, a process of dissolving the detergent between the washing / dehydrating tub and the outer tub is performed by rotating the washing / dehydrating tub, and the water level in the outer tub is predetermined. for more water level, the washing and without water Washing machine so as to perform the step of dissolving the detergent between the washing and dewatering tank by rotating the water tank and the outer tank.