JP2017064078A - Washing machine - Google Patents

Washing machine Download PDF

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Publication number
JP2017064078A
JP2017064078A JP2015193923A JP2015193923A JP2017064078A JP 2017064078 A JP2017064078 A JP 2017064078A JP 2015193923 A JP2015193923 A JP 2015193923A JP 2015193923 A JP2015193923 A JP 2015193923A JP 2017064078 A JP2017064078 A JP 2017064078A
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Prior art keywords
washing
washing tub
circulation
water
detergent
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JP2015193923A
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Japanese (ja)
Inventor
直人 西浦
Naoto Nishiura
直人 西浦
田中 啓之
Hiroyuki Tanaka
啓之 田中
川口 智也
Tomoya Kawaguchi
智也 川口
昌令 米田
Masanori Yoneda
昌令 米田
荒井 英行
Hideyuki Arai
英行 荒井
大西 勝司
Katsuji Onishi
勝司 大西
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Qingdao Haier Washing Machine Co Ltd
Aqua KK
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Qingdao Haier Washing Machine Co Ltd
Aqua KK
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Publication date
Application filed by Qingdao Haier Washing Machine Co Ltd, Aqua KK filed Critical Qingdao Haier Washing Machine Co Ltd
Priority to JP2015193923A priority Critical patent/JP2017064078A/en
Priority to EP16850384.5A priority patent/EP3358066A4/en
Priority to US15/765,182 priority patent/US20180298538A1/en
Priority to PCT/CN2016/100886 priority patent/WO2017054760A1/en
Priority to CN201680057008.9A priority patent/CN108138428A/en
Priority to KR1020187012068A priority patent/KR20180057710A/en
Publication of JP2017064078A publication Critical patent/JP2017064078A/en
Pending legal-status Critical Current

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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08Liquid supply or discharge arrangements
    • D06F39/083Liquid discharge or recirculation arrangements
    • D06F39/085Arrangements or adaptations of pumps
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F35/00Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005Methods for washing, rinsing or spin-drying
    • D06F35/006Methods for washing, rinsing or spin-drying for washing or rinsing only
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30Driving arrangements 
    • D06F37/304Arrangements or adaptations of electric motors
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02Devices for adding soap or other washing agents
    • D06F39/028Arrangements for selectively supplying water to detergent compartments
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08Liquid supply or discharge arrangements
    • D06F39/083Liquid discharge or recirculation arrangements
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44Current or voltage
    • D06F2103/46Current or voltage of the motor driving the drum
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46Drum speed; Actuation of motors, e.g. starting or interrupting
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F23/00Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
    • D06F23/04Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry  and rotating or oscillating about a vertical axis
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02Devices for adding soap or other washing agents
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08Liquid supply or discharge arrangements
    • D06F39/083Liquid discharge or recirculation arrangements
    • D06F39/086Arrangements for avoiding detergent wastage in the discharge conduit
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08Liquid supply or discharge arrangements
    • D06F39/087Water level measuring or regulating devices
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08Liquid supply or discharge arrangements
    • D06F39/088Liquid supply arrangements

Abstract

PROBLEM TO BE SOLVED: To provide a washing machine capable of achieving improvement in a washing effect by a small amount of detergent water in a structure for accommodating laundry in a washing tub having an axis line extending vertically.SOLUTION: A washing machine 1 includes: a washing tub 4 having an axis line J extending vertically; a circulation path 11 for pumping detergent water in which a detergent is mixed from the washing tub 4 and returning it to the washing tub 4 from an upper side Z1; a pump 12 for taking in the detergent water in the washing tub 4 into the circulation path 11 and raising it in the circulation path 11; and a control part 30 for executing a washing operation. The washing operation includes a circulation permeation step which alternately repeats circulation processing for circulating the detergent water between the washing tub 4 and the circulation path 11 by driving the pump 12 and for splashing the detergent water to laundry Q, and permeation processing for stopping the drive of the pump 12 and permeating the detergent water to the laundry Q in the washing tub 4.SELECTED DRAWING: Figure 1

Description

この発明は、洗濯機に関する。   The present invention relates to a washing machine.

洗濯機において、洗剤が混ざった洗剤水で洗濯物を洗う場合には、洗剤水における洗剤の濃度が高いほど、洗剤水による洗濯物の洗浄効果が大きい。下記特許文献1のドラム式洗濯機では、高濃度の洗剤液がドラムの中空軸からドラム内の洗濯物に散布される。下記特許文献2のドラム洗濯機では、高濃縮状態の洗濯水がドラム内の洗濯物に噴射されて、洗濯物が高濃縮洗濯される。   In a washing machine, when washing laundry with detergent water mixed with detergent, the higher the concentration of the detergent in the detergent water, the greater the washing effect of the laundry with the detergent water. In the drum type washing machine disclosed in Patent Document 1 below, a high-concentration detergent solution is sprayed from the hollow shaft of the drum onto the laundry in the drum. In the drum washing machine disclosed in Patent Document 2 below, highly concentrated washing water is sprayed onto the laundry in the drum, and the laundry is highly concentrated and washed.

特開2005−65873号公報JP 2005-65873 A 特表2008−534049号公報Special table 2008-534049 gazette

洗濯物を本格的に洗う本洗い工程に先立って、洗濯物をつけおき洗いすることがある。つけおき洗いでは、洗濯物を洗剤水に浸して洗濯物から汚れを浮き上がらせ、その後の本洗い工程において汚れを取れやすくする。一般的なつけおき洗いは、本洗い工程の全体における給水量とほぼ同量の洗剤水を用いて行われる。つけおき洗いでの洗浄効果を高めるために洗剤水における洗剤の濃度を上げる場合には、洗剤量を多くするのであれば、洗剤に要する費用の負担が大きくなる。   Prior to the main washing process in which the laundry is washed in earnest, the laundry may be put on and washed. In soaking, the laundry is soaked in detergent water to raise the dirt from the laundry and make it easier to remove the dirt in the subsequent main washing process. The general soaking is performed using approximately the same amount of detergent water as the amount of water supplied in the entire main washing process. When the concentration of the detergent in the detergent water is increased in order to enhance the cleaning effect of the extra washing, if the amount of the detergent is increased, the burden of the cost required for the detergent increases.

逆に、洗剤量を増やさずに水量を減らすことによって洗剤水における洗剤の濃度を上げる場合には、少ない洗剤水しか生成できないので、洗剤水を洗濯物に万遍なく浴びせることが難しい。特に、特許文献1のドラム式洗濯機や特許文献2のドラム洗濯機とは異なり、縦に延びる軸線を有する洗濯槽を有する縦型洗濯機では、洗剤水が洗濯槽において底側に偏って溜まることから、洗濯槽内の洗濯物では下部にしか洗剤水がかからない虞がある。これでは、洗剤水による洗濯物の洗浄効果の向上を図ることが困難である。   On the contrary, when the concentration of the detergent in the detergent water is increased by reducing the amount of water without increasing the amount of the detergent, only a small amount of detergent water can be generated, so that it is difficult to bathe the detergent water uniformly on the laundry. In particular, unlike the drum-type washing machine disclosed in Patent Document 1 and the drum-type washing machine disclosed in Patent Document 2, in a vertical washing machine having a washing tub having a longitudinally extending axis, detergent water is concentrated on the bottom side in the washing tub. For this reason, there is a concern that the laundry in the washing tub may be sprayed with detergent water only at the bottom. This makes it difficult to improve the washing effect of the laundry with the detergent water.

この発明は、かかる背景のもとでなされたもので、縦に延びる軸線を有する洗濯槽に洗濯物を収容する構成において、少ない洗剤水によって洗浄効果の向上を図れる洗濯機を提供することを目的とする。   The present invention has been made under such a background, and an object of the present invention is to provide a washing machine capable of improving the cleaning effect with a small amount of detergent water in a configuration in which laundry is accommodated in a washing tub having a longitudinally extending axis. And

本発明は、縦に延びる軸線を有し、洗濯物を収容し、水が溜められる洗濯槽と、洗剤が混ざった洗剤水を前記洗濯槽内から汲み上げて前記洗濯槽内に上側から戻すための循環路と、前記洗濯槽内の洗剤水を前記循環路に取り込んで前記循環路内で上昇させるポンプと、前記ポンプを駆動させることによって洗剤水を前記洗濯槽と前記循環路との間で循環させて洗濯物に浴びせる循環処理と、前記ポンプの駆動を停止させて前記洗濯槽内で洗剤水を洗濯物に浸透させる浸透処理とを交互に繰り返す循環浸透工程を含む洗濯運転を実行する実行手段と、を含む、洗濯機である。   The present invention has a longitudinally extending axis for storing laundry and storing water, and for drawing up detergent water mixed with detergent from the laundry tub and returning it to the laundry tub from above A circulation path, a pump that takes the detergent water in the washing tub into the circulation path and raises it in the circulation path, and circulates the detergent water between the washing tub and the circulation path by driving the pump. Executing means including a circulation and permeation step that alternately repeats a circulation process that is applied to the laundry and a permeation process that stops the driving of the pump and allows the detergent water to penetrate into the laundry in the washing tub. And a washing machine.

また、本発明は、前記洗濯槽を回転させるモータを含み、前記実行手段は、少なくとも1回の前記循環処理において、前記モータを駆動させて前記洗濯槽を所定以下の回転速度で低速回転させることを特徴とする。   Further, the present invention includes a motor for rotating the washing tub, and the execution means drives the motor to rotate the washing tub at a low speed below a predetermined speed in at least one circulation process. It is characterized by.

また、本発明は、前記洗濯槽を回転させるモータを含み、前記実行手段は、少なくとも1回の前記循環処理において、前記モータの駆動を制御して前記洗濯槽の間欠回転を繰り返すことを特徴とする。   Further, the present invention includes a motor for rotating the washing tub, and the execution means repeats intermittent rotation of the washing tub by controlling driving of the motor in at least one circulation process. To do.

また、本発明は、前記洗濯槽を回転させるモータを含み、前記実行手段は、前記循環浸透工程において、前記循環処理中では前記洗濯槽を停止させ、次の前記循環処理を開始する前に前記モータを駆動させて前記洗濯槽を所定角度だけ回転させることを特徴とする。   Further, the present invention includes a motor for rotating the washing tub, and the execution means stops the washing tub during the circulation process and starts the next circulation process in the circulation infiltration step. A motor is driven to rotate the washing tub by a predetermined angle.

また、本発明は、前記洗濯槽に給水するための給水路と、前記給水路を開閉する給水弁と、を含み、前記洗濯運転は、前記循環浸透工程と、前記循環浸透工程の後に洗濯物を本格的に洗うために前記洗濯槽に水を溜める本洗い工程とで構成された洗い工程を含み、前記実行手段は、前記循環浸透工程において、前記給水弁を開いて、前記洗い工程の全体における給水量の一部を前記洗濯槽に給水して洗剤水を生成することを特徴とする。   The present invention also includes a water supply channel for supplying water to the washing tub, and a water supply valve for opening and closing the water supply channel, and the washing operation includes the laundry after the circulation and penetration step and the circulation and penetration step. And a main washing step of storing water in the washing tub in order to wash in earnest, the execution means opens the water supply valve in the circulation permeation step, and the entire washing step A part of the amount of water supplied is supplied to the washing tub to produce detergent water.

また、本発明は、前記給水路に接続され、洗剤を収容する洗剤収容部を含み、前記給水路は、前記洗剤収容部を通過して前記給水路を流れる水を前記洗濯槽内の洗濯物を外した位置へ向けて吐出する吐出口を有することを特徴とする。   In addition, the present invention includes a detergent container that is connected to the water supply channel and stores a detergent, and the water supply channel passes the detergent container and flows water flowing through the water supply channel into the laundry in the washing tub. It has the discharge port which discharges toward the position which removed.

また、本発明は、前記実行手段は、前記洗濯槽内の洗濯物の負荷量の大きさに応じて前記循環処理および前記浸透処理のそれぞれの処理時間を変更することを特徴とする。   Moreover, the present invention is characterized in that the execution means changes processing times of the circulation process and the permeation process according to the load amount of the laundry in the washing tub.

本発明によれば、洗濯機では、縦に延びる軸線を有する洗濯槽に、洗濯物が収容され、水が溜められる。洗濯槽内で洗剤が混ざった洗剤水は、ポンプによって循環路に取り込まれて循環路内で上昇した後に、洗濯槽内に上側から戻される。
実行手段は、循環浸透工程を含む洗濯運転を実行する。実行手段は、循環浸透工程において、ポンプを駆動させることによって洗剤水を洗濯槽と循環路との間で循環させて洗濯物に浴びせる循環処理と、ポンプの駆動を停止させて洗濯槽内で洗剤水を洗濯物に浸透させる浸透処理とを交互に繰り返す。
洗剤水が少なくても、複数回の循環処理によって、洗剤水が洗濯槽内の洗濯物に繰り返し浴びせられて万遍なくかかり、各循環処理の後の浸透処理によって、つけおきと同等の効果を得ることができる。これにより、洗濯物の全体から汚れが効果的に浮き出る。そのため、少ない洗剤水によって洗浄効果の向上を図れる。
According to the present invention, in the washing machine, the laundry is accommodated in the washing tub having the longitudinally extending axis and the water is stored. The detergent water mixed with the detergent in the washing tub is taken into the circulation path by the pump and rises in the circulation path, and then is returned to the washing tub from the upper side.
The execution means executes a washing operation including a circulation infiltration step. In the circulation infiltration step, the execution means includes a circulation process in which the detergent water is circulated between the washing tub and the circulation path by driving the pump, and the laundry is bathed on the laundry, and the driving of the pump is stopped and the detergent in the washing tub. The osmosis treatment for allowing water to permeate the laundry is repeated alternately.
Even if the amount of detergent water is small, the detergent water is repeatedly bathed in the laundry in the washing tub by multiple circulation treatments, and it is applied evenly. Can be obtained. As a result, dirt effectively emerges from the entire laundry. Therefore, the cleaning effect can be improved with less detergent water.

また、本発明によれば、実行手段は、少なくとも1回の循環処理において、モータを駆動させて洗濯槽を所定以下の回転速度で低速回転させる。これにより、循環路から洗濯槽内に戻される洗剤水を、洗濯槽内の洗濯物に対して、洗濯槽の回転方向における全域に亘って万遍なく浴びせることができる。そのため、洗剤水による洗浄効果の一層の向上を図れる。   Further, according to the present invention, the execution means drives the motor to rotate the washing tub at a low speed below a predetermined speed in at least one circulation process. Thereby, the detergent water returned from the circulation path into the washing tub can be uniformly applied to the laundry in the washing tub over the entire area in the rotation direction of the washing tub. Therefore, the cleaning effect by the detergent water can be further improved.

また、本発明によれば、実行手段は、少なくとも1回の循環処理において、モータの駆動を制御して洗濯槽の間欠回転を繰り返す。これにより、循環路から洗濯槽内に戻される洗剤水を、洗濯槽内の洗濯物に対して、洗濯槽の回転方向における全域に亘って万遍なく浴びせることができる。そのため、洗剤水による洗浄効果の一層の向上を図れる。   According to the present invention, the execution means repeats intermittent rotation of the washing tub by controlling the drive of the motor in at least one circulation process. Thereby, the detergent water returned from the circulation path into the washing tub can be uniformly applied to the laundry in the washing tub over the entire area in the rotation direction of the washing tub. Therefore, the cleaning effect by the detergent water can be further improved.

また、本発明によれば、実行手段は、循環浸透工程において、循環処理中では洗濯槽を停止させ、次の循環処理を開始する前にモータを駆動させて洗濯槽を所定角度だけ回転させる。これにより、循環処理中で洗濯槽が停止した状態では、洗濯物において洗濯槽の回転方向における1箇所に洗濯水を集中して浴びせることができる。そして、次の循環処理を開始する前に洗濯槽が少しだけ回転することにより、当該次の循環処理では、洗濯物において先ほどの循環処理で洗濯水が浴びせられた部分とは別の部分に洗濯水を集中して浴びせることができる。このように洗濯物において洗剤水がかかる位置を少しずつ変えながら循環処理を複数回繰り返すことによって、最終的に、十分な量の洗剤水を、洗濯槽内の洗濯物に対して、洗濯槽の回転方向における全域に亘って万遍なく浴びせることができる。そのため、洗剤水による洗浄効果の一層の向上を図れる。   Further, according to the present invention, in the circulation infiltration step, the execution means stops the washing tub during the circulation process, and drives the motor to rotate the washing tub by a predetermined angle before starting the next circulation process. Thereby, in a state where the washing tub is stopped during the circulation process, the washing water can be concentrated and bathed in one place in the rotation direction of the laundry tub in the laundry. Then, by rotating the washing tub slightly before starting the next circulation process, in the next circulation process, the laundry is washed in a part different from the part where the washing water is bathed in the previous circulation process. Can concentrate water. Thus, by repeating the circulation process a plurality of times while gradually changing the position where the detergent water is applied to the laundry, a sufficient amount of the detergent water is finally supplied to the laundry in the laundry tub. It is possible to bathe all over the entire area in the rotation direction. Therefore, the cleaning effect by the detergent water can be further improved.

また、本発明によれば、循環浸透工程と本洗い工程とで洗い工程が構成される場合において、実行手段は、本洗い工程の前の循環浸透工程において、給水弁を開いて給水路に水を流すことによって、洗い工程の全体で定められた給水量の一部を洗濯槽に給水して洗剤水を生成する。これにより、高濃度の洗剤水を生成できる。   Further, according to the present invention, in the case where the washing process is constituted by the circulation and infiltration process and the main washing process, the execution means opens the water supply valve in the circulation and infiltration process before the main washing process. The detergent water is generated by supplying a part of the water supply amount determined in the entire washing process to the washing tub. Thereby, high concentration detergent water can be generated.

また、本発明によれば、給水路の吐出口は、洗剤収容部を通過して洗剤を乗せた水を洗濯槽内の洗濯物を外した位置へ向けて吐出する。これにより、水に溶けきる前の超高濃度の洗剤が洗濯物の表面の一部だけに付着してしまうことによって、洗濯物の全体を万遍なく洗浄できなくなることを抑制できる。   Moreover, according to this invention, the discharge outlet of a water supply channel discharges the water which put the detergent through the detergent accommodating part toward the position which removed the laundry in a washing tub. As a result, it is possible to prevent the entire laundry from being unable to be washed evenly because the ultra-high concentration detergent before being completely dissolved in water adheres to only a part of the surface of the laundry.

また、本発明によれば、実行手段は、洗濯槽内の洗濯物の負荷量の大きさに応じて循環処理および浸透処理のそれぞれの処理時間を変更するので、負荷量の大きさ毎に最適な循環浸透工程を実行できる。そのため、循環浸透工程における洗剤水による洗浄効果の一層の向上を図れる。   Further, according to the present invention, the execution means changes the processing time of the circulation process and the permeation process according to the load amount of the laundry in the washing tub, so it is optimal for each load amount. Simple circulation and infiltration process. Therefore, it is possible to further improve the cleaning effect of the detergent water in the circulation and penetration step.

図1は、この発明の一実施形態に係る洗濯機の模式図である。FIG. 1 is a schematic view of a washing machine according to one embodiment of the present invention. 図2は、洗濯機の電気的構成を示すブロック図である。FIG. 2 is a block diagram showing an electrical configuration of the washing machine. 図3は、循環浸透工程における制御動作を示すフローチャートである。FIG. 3 is a flowchart showing a control operation in the circulation permeation process. 図4は、第1変形例に係る洗濯機の模式図である。FIG. 4 is a schematic diagram of the washing machine according to the first modification. 図5は、第2変形例に係る洗濯機の模式図である。FIG. 5 is a schematic diagram of a washing machine according to a second modification. 図6は、第3変形例に係る洗濯機の模式図である。FIG. 6 is a schematic diagram of a washing machine according to a third modification.

以下には、図面を参照して、この発明の実施形態について具体的に説明する。図1は、この発明の一実施形態に係る洗濯機1の模式図である。図1における上下方向を洗濯機1の上下方向Zといい、図1における左右方向を洗濯機1の横方向Yという。上下方向Zは、垂直方向と一致し、横方向Yは、水平方向と一致する。上下方向Zのうち、上側を上側Z1といい、下側を下側Z2という。   Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a schematic diagram of a washing machine 1 according to an embodiment of the present invention. The up and down direction in FIG. 1 is referred to as the up and down direction Z of the washing machine 1, and the left and right direction in FIG. The vertical direction Z coincides with the vertical direction, and the horizontal direction Y coincides with the horizontal direction. In the vertical direction Z, the upper side is referred to as the upper side Z1, and the lower side is referred to as the lower side Z2.

洗濯機1には、乾燥機能を有する洗濯乾燥機も含まれるが、以下では、乾燥機能が省略されて洗濯運転だけを実行する洗濯機を例に取って洗濯機1について説明する。洗濯機1は、筐体2と、筐体2内に配置される外槽3、洗濯槽4、モータ5、給水路6、給水弁7、洗剤収容部8、排水路9、排水弁10、循環路11およびポンプ12とを含む。   The washing machine 1 includes a washing machine having a drying function. Hereinafter, the washing machine 1 will be described by taking a washing machine in which the drying function is omitted and only a washing operation is performed as an example. The washing machine 1 includes a housing 2, an outer tub 3, a washing tub 4, a motor 5, a water supply path 6, a water supply valve 7, a detergent container 8, a drainage path 9, a drainage valve 10, A circulation path 11 and a pump 12 are included.

筐体2は、たとえば金属製であり、ボックス状に形成される。筐体2の上面2Aには、筐体2の内外を連通させる出入口2Bが形成される。上面2Aには、出入口2Bを開閉する扉14と、スイッチや液晶パネルなどで構成された表示操作部15とが設けられる。使用者は、表示操作部15のスイッチなどを操作することによって、洗濯機1の電源をON・OFFしたり、洗濯運転のコースを自由に設定したり、洗濯機1に対して洗濯運転の開始や停止などを指示したりすることができる。表示操作部15の液晶パネルなどには、洗濯運転に関する情報が目視可能に表示される。   The housing | casing 2 is metal, for example, and is formed in a box shape. An entrance / exit 2 </ b> B that communicates the inside and outside of the housing 2 is formed on the upper surface 2 </ b> A of the housing 2. The upper surface 2A is provided with a door 14 that opens and closes the entrance 2B and a display operation unit 15 configured by a switch, a liquid crystal panel, or the like. The user operates the switch of the display operation unit 15 to turn the power of the washing machine 1 ON / OFF, freely set the course of the washing operation, or start the washing operation for the washing machine 1 Can be instructed to stop or stop. Information on the washing operation is displayed on the liquid crystal panel of the display operation unit 15 so as to be visible.

外槽3は、たとえば樹脂製であり、有底円筒状に形成され、いわゆる吊り棒などの弾性支持部材(図示せず)を介して筐体2によって弾性支持される。外槽3内には水が溜められる。外槽3の円中心を通る仮想の直線は、外槽3の軸線Jである。軸線Jは、垂直方向または垂直方向に対して若干傾いた方向、つまり縦に延びる。有底円筒状の外槽3は、軸線Jに沿って配置された略円筒状の円周壁3Aと、円周壁3Aの中空部分を下側Z2から塞ぐ円板状の底壁3Bと、円周壁3Aの上端縁を縁取りつつ軸線J側へ張り出したリング状の環状壁3Cとを有する。外槽3には、環状壁3Cによって囲まれて筐体2の出入口2Bに下側Z2から対向する円形状の出入口3Dと、底壁3Bの円中心部分を上下方向Zに貫通する貫通穴3Eとが形成される。   The outer tub 3 is made of, for example, resin, is formed in a bottomed cylindrical shape, and is elastically supported by the housing 2 via an elastic support member (not shown) such as a so-called hanging rod. Water is stored in the outer tub 3. An imaginary straight line passing through the circle center of the outer tub 3 is the axis J of the outer tub 3. The axis J extends in the vertical direction or in a direction slightly inclined with respect to the vertical direction, that is, in the vertical direction. The bottomed cylindrical outer tub 3 includes a substantially cylindrical circumferential wall 3A disposed along the axis J, a disk-shaped bottom wall 3B that blocks the hollow portion of the circumferential wall 3A from the lower side Z2, and a circumferential wall. A ring-shaped annular wall 3C projecting toward the axis J side while trimming the upper end edge of 3A. The outer tub 3 has a circular entrance / exit 3D surrounded by the annular wall 3C and opposed to the entrance / exit 2B of the housing 2 from the lower side Z2, and a through hole 3E penetrating in the vertical direction Z through the circular center portion of the bottom wall 3B. And are formed.

洗濯槽4は、外槽3よりも一回り小さい有底円筒状に形成された金属製のドラムであり、内部に洗濯物Qを収容することができる。洗濯槽4は、外槽3内に同軸状で収容される。そのため、洗濯槽4の軸線は、前述した軸線Jである。有底円筒状の洗濯槽4は、軸線Jに沿って配置された略円筒状の円周壁4Aと、円周壁4Aの中空部分を下側Z2から塞ぐ円板状の底壁4Bと、円周壁4Aの上端縁を縁取りつつ軸線J側へ張り出したリング状の環状壁4Cとを有する。洗濯槽4には、環状壁4Cによって囲まれて外槽3の出入口3Dに下側Z2から対向する円形状の出入口4Dと、円周壁4Aおよび底壁4Bを貫通する多数の貫通穴4Eとが形成される。   The washing tub 4 is a metal drum formed in a bottomed cylindrical shape that is slightly smaller than the outer tub 3, and can store the laundry Q therein. The washing tub 4 is accommodated coaxially in the outer tub 3. Therefore, the axis of the washing tub 4 is the axis J described above. The bottomed cylindrical washing tub 4 includes a substantially cylindrical circumferential wall 4A disposed along the axis J, a disk-shaped bottom wall 4B that blocks the hollow portion of the circumferential wall 4A from the lower side Z2, and a circumferential wall. It has a ring-shaped annular wall 4C that protrudes toward the axis J while edging the upper end edge of 4A. The washing tub 4 includes a circular doorway 4D surrounded by the annular wall 4C and facing the doorway 3D of the outer tub 3 from the lower side Z2, and a large number of through holes 4E penetrating the circumferential wall 4A and the bottom wall 4B. It is formed.

前述した扉14を開くと、出入口2B、出入口3Dおよび出入口4Dが、上下方向Zに並んだ状態で筐体2の上面2Aから上側Z1に露出されるので、これらの出入口を介して洗濯槽4内に洗濯物Qを出し入れすることができる。外槽3内の水は、貫通穴4Eを介して外槽3と洗濯槽4との間で行き来し、洗濯槽4にも溜まる。そのため、外槽3内の水位と洗濯槽4内の水位とは一致する。底壁4Bの円中心位置には、軸線Jに沿って下側Z2へ突出した回転軸17が設けられる。回転軸17は、外槽3の底壁3Bの貫通穴3Eに上側Z1から挿通される。   When the door 14 is opened, the doorway 2B, the doorway 3D, and the doorway 4D are exposed from the upper surface 2A of the housing 2 to the upper side Z1 in a state where they are aligned in the vertical direction Z. The laundry Q can be taken in and out. The water in the outer tub 3 moves between the outer tub 3 and the washing tub 4 through the through hole 4 </ b> E and accumulates in the washing tub 4. Therefore, the water level in the outer tub 3 matches the water level in the washing tub 4. At the center position of the circle of the bottom wall 4B, a rotating shaft 17 that protrudes downward Z2 along the axis J is provided. The rotating shaft 17 is inserted into the through hole 3E of the bottom wall 3B of the outer tub 3 from the upper side Z1.

モータ5は、たとえばインバータモータによって構成される。モータ5は、筐体2内において、外槽3の下側Z2に配置され、ステー(図示せず)などを介して外槽3の底壁3Bに固定される。モータ5は、軸線Jまわりに回転する出力軸18を有する。出力軸18は、洗濯槽4の回転軸17に連結される。モータ5が駆動されると、モータ5が発生した駆動力は、回転軸17から出力軸18に伝達され、洗濯槽4は、この駆動力によって軸線Jまわりに回転する。なお、クラッチなどで構成された伝達機構(図示せず)が回転軸17と出力軸18との間に介在されてもよい。また、洗濯槽4内には、収容された洗濯物Qを撹拌するために回転するパルセータ(図示せず)が設けられ、モータ5の駆動力が伝達機構から洗濯槽4およびパルセータの一方または両方に対して選択的に伝達されてもよい。また、この実施形態では、説明の便宜上、モータ5の回転数は、洗濯槽4およびパルセータのそれぞれの回転数と同じである。   The motor 5 is constituted by, for example, an inverter motor. The motor 5 is disposed on the lower side Z2 of the outer tub 3 in the housing 2, and is fixed to the bottom wall 3B of the outer tub 3 via a stay (not shown). The motor 5 has an output shaft 18 that rotates about the axis J. The output shaft 18 is connected to the rotating shaft 17 of the washing tub 4. When the motor 5 is driven, the driving force generated by the motor 5 is transmitted from the rotating shaft 17 to the output shaft 18, and the washing tub 4 rotates around the axis line J by this driving force. A transmission mechanism (not shown) constituted by a clutch or the like may be interposed between the rotating shaft 17 and the output shaft 18. The washing tub 4 is provided with a pulsator (not shown) that rotates to stir the stored laundry Q, and the driving force of the motor 5 is transmitted from the transmission mechanism to one or both of the washing tub 4 and the pulsator. May be selectively transmitted. In this embodiment, for the convenience of explanation, the rotational speed of the motor 5 is the same as the rotational speeds of the washing tub 4 and the pulsator.

給水路6は、蛇口(図示せず)につながった一端部6Aと、吐出口6Bが形成された他端部6Cとを有する流路である。給水路6の他端部6Cは、外槽3の環状壁3Cを上側Z1から貫通し、吐出口6Bは、外槽3の円周壁3Aと洗濯槽4の円周壁4Aとの横方向Yにおける隙間19を上側Z1から臨むように配置される。   The water supply path 6 is a flow path having one end 6A connected to a faucet (not shown) and the other end 6C in which the discharge port 6B is formed. The other end 6C of the water supply channel 6 penetrates the annular wall 3C of the outer tub 3 from the upper side Z1, and the discharge port 6B is in the lateral direction Y between the circumferential wall 3A of the outer tub 3 and the circumferential wall 4A of the washing tub 4. It arrange | positions so that the clearance gap 19 may face from upper side Z1.

給水弁7は、給水路6の途中に設けられる。給水弁7を開くと給水路6が開く。これにより、蛇口からの水が、太い実線矢印で示すように、給水路6を通って吐出口6Bから隙間19に流れ落ちて外槽3に溜まる。このとき、吐出口6Bは、給水路6を流れる水を、外槽3と洗濯槽4との隙間19、つまり、洗濯槽4内の洗濯物Qを外した位置へ向けて吐出する。外槽3に溜まった水は、洗濯槽4の貫通穴4Eを通って洗濯槽4にも溜まる。このように、給水弁7を開くと、給水路6から洗濯槽4に給水される。一方、給水弁7を閉じると給水路6が閉じるので、給水を停止できる。   The water supply valve 7 is provided in the middle of the water supply path 6. When the water supply valve 7 is opened, the water supply path 6 is opened. As a result, the water from the faucet flows through the water supply path 6 from the discharge port 6B to the gap 19 and accumulates in the outer tub 3 as indicated by the thick solid line arrow. At this time, the discharge port 6B discharges the water flowing through the water supply channel 6 toward the gap 19 between the outer tub 3 and the washing tub 4, that is, toward the position where the laundry Q in the washing tub 4 is removed. The water collected in the outer tub 3 is also collected in the washing tub 4 through the through hole 4E of the washing tub 4. In this way, when the water supply valve 7 is opened, water is supplied from the water supply channel 6 to the washing tub 4. On the other hand, when the water supply valve 7 is closed, the water supply path 6 is closed, so that water supply can be stopped.

洗剤収容部8は、洗剤が収容されるボックス状に形成され、給水路6の途中に接続される。洗剤収容部8の内部空間は、給水路6の途中部分を構成する。給水弁7を開いて給水を開始すると、蛇口からの水が、洗剤収容部8を通過して洗剤を乗せ、給水路6を流れた後に吐出口6Bから外槽3や洗濯槽4に供給される。これにより、外槽3および洗濯槽4には、洗剤が混ざった洗剤水が溜められる。   The detergent accommodating portion 8 is formed in a box shape that accommodates the detergent, and is connected in the middle of the water supply path 6. The internal space of the detergent container 8 constitutes a middle portion of the water supply channel 6. When the water supply valve 7 is opened and water supply is started, the water from the faucet passes through the detergent container 8 and puts the detergent, and after flowing through the water supply path 6, is supplied to the outer tub 3 and the washing tub 4 from the discharge port 6B. The Thereby, detergent water mixed with detergent is stored in the outer tub 3 and the washing tub 4.

排水路9は、外槽3の底壁3Bにおいて貫通穴3Eを避けた位置に下側Z2から接続された一端部9Aと、一端部9Aよりも低い位置において筐体2の外に引き出された他端部9Bとを有する流路である。   The drainage channel 9 was pulled out of the housing 2 at a position lower than the one end 9A and one end 9A connected from the lower side Z2 to a position avoiding the through hole 3E in the bottom wall 3B of the outer tub 3. A flow path having the other end 9B.

排水弁10は、排水路9の途中に設けられる。排水弁10を開くと排水路9が開く。これにより、外槽3および洗濯槽4に溜まった洗剤水が、排水路9を通って機外に排出される。このように排水された状態で排水弁10を閉じると排水路9が閉じるので、排水を停止できる。   The drain valve 10 is provided in the middle of the drain channel 9. When the drain valve 10 is opened, the drain channel 9 is opened. Thereby, the detergent water accumulated in the outer tub 3 and the washing tub 4 is discharged out of the machine through the drainage channel 9. When the drain valve 10 is closed in such a drained state, the drainage channel 9 is closed, so that drainage can be stopped.

循環路11は、排水路9において一端部9Aと排水弁10との間の部分に接続された一端部11Aと、吐水口11Bが形成された他端部11Cとを有する流路である。循環路11は、一端部11Aから横方向Yへ延びた後に折れ曲がり、筐体2と外槽3との隙間を通って上側Z1へ延びた後に軸線J側へ折れ曲がって他端部11Cに到達する。他端部11Cは、外槽3の出入口3Dの真上において下側Z2に折れ曲がり、吐水口11Bは、他端部11Cの下端で開口し、洗濯槽4の出入口4Dを上側Z1から臨む。   The circulation path 11 is a flow path having one end portion 11A connected to a portion between the one end portion 9A and the drain valve 10 in the drainage channel 9 and the other end portion 11C in which the water discharge port 11B is formed. The circulation path 11 bends after extending in the lateral direction Y from the one end 11A, extends through the gap between the housing 2 and the outer tub 3 to the upper side Z1, and then bends toward the axis J to reach the other end 11C. . The other end portion 11C bends to the lower side Z2 just above the entrance / exit 3D of the outer tub 3, the spout port 11B opens at the lower end of the other end portion 11C, and faces the entrance / exit 4D of the washing tub 4 from the upper side Z1.

ポンプ12は、回転するインペラ(図示せず)を内蔵する渦巻ポンプなどであり、循環路11の途中に設けられる。ポンプ12は、駆動されることによって、外槽3内および洗濯槽4内の洗剤水を、排水路9経由で循環路11の一端部11Aに取り込んで循環路11内で上昇させる。これにより、洗剤水は、外槽3内および洗濯槽4内から循環路11内に汲み上げられて、他端部11Cの吐水口11Bから吐出する。吐水口11Bから吐出された洗剤水は、太い破線矢印で示すように、洗濯槽4の出入口4Dに流れ落ちて、洗濯槽4内に上側Z1から戻される。引き続きポンプ12を駆動させると、洗剤水が洗濯槽4と循環路11との間で循環する。   The pump 12 is a spiral pump or the like that incorporates a rotating impeller (not shown), and is provided in the middle of the circulation path 11. When the pump 12 is driven, the detergent water in the outer tub 3 and the washing tub 4 is taken into the one end portion 11 </ b> A of the circulation path 11 via the drainage path 9 and is raised in the circulation path 11. Thereby, the detergent water is pumped up into the circulation path 11 from the inside of the outer tub 3 and the washing tub 4 and discharged from the water outlet 11B of the other end portion 11C. The detergent water discharged from the water discharge port 11B flows down to the entrance 4D of the washing tub 4 and is returned from the upper side Z1 into the washing tub 4 as indicated by a thick broken line arrow. When the pump 12 is continuously driven, the detergent water circulates between the washing tub 4 and the circulation path 11.

洗濯機1は、実行手段としての制御部30を含む。制御部30は、たとえば、CPUと、ROMやRAMなどのメモリ部とを含むマイクロコンピュータであって、筐体2内に配置される。   The washing machine 1 includes a control unit 30 as execution means. The control unit 30 is, for example, a microcomputer including a CPU and a memory unit such as a ROM or a RAM, and is arranged in the housing 2.

洗濯機1の電気的構成を示すブロック図である図2を参照して、洗濯機1は、水位センサ31と、回転センサ32と、計時用のタイマ33とをさらに含む。水位センサ31、回転センサ32およびタイマ33ならびに前述したモータ5、ポンプ12、表示操作部15、給水弁7および排水弁10のそれぞれは、制御部30に対して電気的に接続される。   Referring to FIG. 2, which is a block diagram showing an electrical configuration of washing machine 1, washing machine 1 further includes a water level sensor 31, a rotation sensor 32, and a timer 33 for timing. The water level sensor 31, the rotation sensor 32, the timer 33, and the motor 5, the pump 12, the display operation unit 15, the water supply valve 7, and the drain valve 10 are electrically connected to the control unit 30.

水位センサ31は、外槽3および洗濯槽4の水位を検知するセンサであり、水位センサ31の検知結果は、リアルタイムで制御部30に入力される。   The water level sensor 31 is a sensor that detects the water level of the outer tub 3 and the washing tub 4, and the detection result of the water level sensor 31 is input to the control unit 30 in real time.

回転センサ32は、モータ5の回転数、厳密には、モータ5における出力軸18の回転数を読み取る装置であり、たとえば、出力軸18が所定の回転角度ずつ回転する度にパルスを出力するホールIC(図示せず)で構成される。回転センサ32が読み取った回転数は、リアルタイムで制御部30に入力される。制御部30は、入力された回転数に基づいて、モータ5に印加される電圧、詳しくはモータ5に印加される電圧のデューティ比を制御して、モータ5を所望の回転数で回転するように駆動させる。制御部30は、ポンプ12の駆動も制御する。   The rotation sensor 32 is a device that reads the number of rotations of the motor 5, strictly speaking, the number of rotations of the output shaft 18 in the motor 5. For example, a hall that outputs a pulse every time the output shaft 18 rotates by a predetermined rotation angle. It is composed of an IC (not shown). The number of rotations read by the rotation sensor 32 is input to the control unit 30 in real time. The control unit 30 controls the voltage applied to the motor 5, specifically the duty ratio of the voltage applied to the motor 5, based on the input rotational speed so as to rotate the motor 5 at a desired rotational speed. To drive. The control unit 30 also controls driving of the pump 12.

前述したように使用者が表示操作部15を操作して洗濯運転の運転条件などについて選択すると、制御部30は、その選択を受け付ける。制御部30は、表示操作部15において、必要な情報を使用者に対して目視可能に表示する。制御部30は、給水弁7および排水弁10のそれぞれの開閉を制御する。そのため、制御部30は、排水弁10を閉じた状態で給水弁7を開くことによって洗濯槽4に給水でき、排水弁10を開くことによって洗濯槽4の排水を実行できる。   As described above, when the user operates the display operation unit 15 to select a washing operation condition or the like, the control unit 30 receives the selection. The control unit 30 displays necessary information on the display operation unit 15 so as to be visible to the user. The control unit 30 controls the opening and closing of the water supply valve 7 and the drain valve 10. Therefore, the controller 30 can supply water to the washing tub 4 by opening the water supply valve 7 with the drain valve 10 closed, and can drain the washing tub 4 by opening the drain valve 10.

次に、洗濯機1において制御部30が実行する洗濯運転について説明する。洗濯運転は、最初の循環浸透工程と循環浸透工程の後の本洗い工程とで構成された洗い工程と、洗い工程の後のすすぎ工程と、脱水工程とを含む。循環浸透工程を、洗濯運転における独立した工程とみなしてもよいし、本実施形態のように洗い工程の一部とみなしてもよい。脱水工程は、洗濯運転の最後に実行される最終脱水工程と、洗い工程やすすぎ工程の直後に実行される中間脱水工程とを含む。   Next, the washing operation performed by the control unit 30 in the washing machine 1 will be described. The washing operation includes a washing process composed of an initial circulation infiltration process and a main washing process after the circulation infiltration process, a rinsing process after the washing process, and a dehydration process. The circulation permeation process may be regarded as an independent process in the washing operation, or may be regarded as a part of the washing process as in the present embodiment. The dehydration process includes a final dehydration process performed at the end of the washing operation and an intermediate dehydration process performed immediately after the washing process and the rinsing process.

制御部30は、洗濯運転の開始に先立って、洗濯槽4内の洗濯物Qの量を負荷量として検知する。負荷量の単位は、たとえばkgである。負荷量検知の一例として、制御部30は、洗濯機1に備えられた重量センサ(図示せず)が検知した洗濯物Qの重量から負荷量を取得してもよい。また、洗濯槽4を低速で定常回転させたときのモータ5の回転数のばらつきによって負荷量を検知してもよい。また、前述したパルセータが備えられる場合には、制御部30は、洗濯物Qが載せられたパルセータを所定時間回転させた直後にモータ5の駆動を停止させてモータ5を惰性回転させ、そのときのモータ5の惰性回転量を測定する。負荷量が大きいほど、重い洗濯物Qが載せられたパルセータに連結されたモータ5の惰性回転量は小さくなる。負荷量が小さいほど、軽い洗濯物Qが載せられたパルセータに連結されたモータ5の惰性回転量は大きくなる。制御部30は、惰性回転数の大小に応じて負荷量を検知する。   Prior to the start of the washing operation, the control unit 30 detects the amount of the laundry Q in the washing tub 4 as a load amount. The unit of the load amount is, for example, kg. As an example of load amount detection, the control unit 30 may acquire the load amount from the weight of the laundry Q detected by a weight sensor (not shown) provided in the washing machine 1. Moreover, you may detect load amount by the dispersion | variation in the rotation speed of the motor 5 when the washing tub 4 is rotated regularly at low speed. Further, when the pulsator described above is provided, the control unit 30 stops the driving of the motor 5 immediately after rotating the pulsator on which the laundry Q is placed for a predetermined time and rotates the motor 5 by inertia, The inertial rotation amount of the motor 5 is measured. The greater the load amount, the smaller the inertial rotation amount of the motor 5 connected to the pulsator on which the heavy laundry Q is placed. The smaller the load amount, the greater the inertial rotation amount of the motor 5 connected to the pulsator on which the light laundry Q is placed. The control unit 30 detects the load amount according to the magnitude of the inertia rotation speed.

図3のフローチャートを参照して、循環浸透工程について説明する。循環浸透工程の間は、排水弁10は、常に閉じられた状態にある。制御部30は、循環浸透工程の開始に伴い、所定時間だけ給水弁7を開くことによって、洗濯槽4に給水する(ステップS1)。これにより、洗濯槽4には、所定水位まで洗剤水が溜まる。   With reference to the flowchart of FIG. 3, the circulation permeation step will be described. During the circulation and infiltration process, the drain valve 10 is always closed. The control unit 30 supplies water to the washing tub 4 by opening the water supply valve 7 for a predetermined time with the start of the circulation and infiltration step (step S1). Thereby, detergent water accumulates in the washing tub 4 to a predetermined water level.

次に、制御部30は、1回目の循環処理を実施する(ステップS2)。制御部30は、循環処理において、ポンプ12を駆動させることによって、洗剤水を洗濯槽4と循環路11との間で循環させ、その際に、循環路11の吐水口11Bから洗濯槽4内の洗濯物Qに洗剤水を浴びせる。循環処理における処理時間、つまり、ポンプ12を駆動させる時間は、たとえば15秒位である。また、循環路11内でポンプ12を通過する洗剤水では、洗剤がポンプ12のインペラによって細かく砕かれて水に溶けるので、高濃度の洗剤水を生成できる。   Next, the control unit 30 performs the first circulation process (step S2). In the circulation process, the control unit 30 drives the pump 12 to circulate the detergent water between the washing tub 4 and the circulation path 11, and at this time, the water is discharged from the water outlet 11 </ b> B of the circulation path 11 into the washing tub 4. Soak the laundry Q in detergent water. The processing time in the circulation processing, that is, the time for driving the pump 12 is, for example, about 15 seconds. Further, in the detergent water that passes through the pump 12 in the circulation path 11, the detergent is finely crushed by the impeller of the pump 12 and dissolved in water, so that highly concentrated detergent water can be generated.

次に、制御部30は、1回目の浸透処理を実施する(ステップS3)。制御部30は、浸透処理において、ポンプ12の駆動を停止させて洗濯槽4内で洗剤水を洗濯物Qに浸透させる。具体的には、循環処理において洗濯物Qに対して上側Z1から浴びせられた洗剤水が、自重によって洗濯物Qに染み込んでいく。また、浸透処理では、引き続き排水弁10が閉じた状態にあるので、洗剤水は、洗濯槽4内にある程度溜まった状態にあり、洗濯物Qでは特に下部が洗剤水に浸る。浸透処理における処理時間、つまり、ポンプ12を停止させる時間は、たとえば45秒位である。   Next, the control unit 30 performs the first permeation process (step S3). In the permeation process, the control unit 30 stops the driving of the pump 12 and permeates the laundry Q with the detergent water in the washing tub 4. Specifically, the detergent water bathed from the upper side Z1 with respect to the laundry Q in the circulation process soaks into the laundry Q by its own weight. Further, in the permeation treatment, the drain valve 10 is still in the closed state, so that the detergent water remains in the washing tub 4 to some extent, and the lower part of the laundry Q is immersed in the detergent water. The processing time in the infiltration processing, that is, the time for stopping the pump 12 is, for example, about 45 seconds.

次に、制御部30は、2回目の循環処理を実施し(ステップS4)、その後に2回目の浸透処理を実施する(ステップS5)。ちなみに、循環処理の直前の浸透処理では、ポンプ12が停止されるので、循環処理の開始時には、洗剤水は、外槽3および洗濯槽4に溜まるとともに、排水路9と循環路11の一端部11Aとにも溜まった状態にある。そのため、浸透処理の直後の循環処理の際に、ポンプ12は、空回りすることなく、洗剤水の循環を速やかに開始できる。また、1回目の循環処理では、洗濯前の洗濯物Qが乾燥して多くの洗剤水を吸収できる状態にあるので、処理時間が長めに設定されるが、2回目以降の循環処理では、洗濯物Qがある程度の洗剤水を吸収した状態にあるので、1回目の循環処理よりも処理時間が短めに設定される。同様の理由により、1回目の浸透処理では処理時間が長めに設定されるが、2回目以降の浸透処理では、1回目の浸透処理よりも処理時間が短めに設定される。   Next, the control unit 30 performs a second circulation process (step S4), and then performs a second permeation process (step S5). Incidentally, since the pump 12 is stopped in the osmosis treatment immediately before the circulation treatment, the detergent water is accumulated in the outer tub 3 and the washing tub 4 at the start of the circulation treatment, and one end portion of the drainage passage 9 and the circulation passage 11. 11A is also in a state of accumulation. Therefore, in the circulation process immediately after the infiltration process, the pump 12 can quickly start the circulation of the detergent water without idling. In the first circulation process, since the laundry Q before washing is in a state where it can dry and absorb a lot of detergent water, the treatment time is set longer, but in the second and subsequent circulation processes, the laundry is washed. Since the product Q is in a state of absorbing a certain amount of detergent water, the processing time is set shorter than the first circulation processing. For the same reason, the processing time is set longer in the first permeation process, but the processing time is set shorter in the second and subsequent permeation processes than in the first permeation process.

制御部30は、ステップS1での給水の開始から所定時間が経過するまでは(ステップS6でNO)、循環処理(ステップS4)と浸透処理(ステップS5)とを交互に複数回繰り返す。ここでの所定時間は、たとえば30分間であり、この場合、循環処理と浸透処理とは、トータルでそれぞれ30回ずつ繰り返される。洗剤水が少なくても、複数回の循環処理によって、洗剤水が洗濯槽4内の洗濯物Qに繰り返し浴びせられて万遍なくかかり、各循環処理の後の浸透処理によって、洗濯物Qが洗剤水によってつけおきと同等の状態とされる。これにより、洗濯物Qの全体から汚れが効果的に浮き出る。そのため、少ない洗剤水によって洗浄効果の向上を図れる。   The control unit 30 alternately repeats the circulation process (step S4) and the permeation process (step S5) a plurality of times until a predetermined time has elapsed from the start of water supply in step S1 (NO in step S6). The predetermined time here is, for example, 30 minutes. In this case, the circulation process and the permeation process are repeated 30 times in total. Even if the amount of the detergent water is small, the detergent water is repeatedly bathed in the laundry Q in the washing tub 4 by a plurality of circulation treatments, and it is uniformly applied. It is in a state equivalent to soaking with water. As a result, dirt effectively emerges from the entire laundry Q. Therefore, the cleaning effect can be improved with less detergent water.

そして、所定時間が経過すると(ステップS6でYES)、循環浸透工程が終了し、制御部30は、次工程である本洗い工程を実施する。制御部30は、本洗い工程の開始に伴い、引き続き排水弁10を閉じた状態で給水弁7を開くことによって、洗濯槽4に追加で給水する。これにより、洗濯槽4には、ステップS1での給水によって溜まった洗剤水の水位よりも高い水位まで洗剤水が溜まる。制御部30は、本洗い工程において、洗濯槽4に洗剤水が溜まった状態で、モータ5を駆動させて洗濯槽4を回転させたり、前述したパルセータを回転させたりする。これにより、洗濯槽4内には、洗剤水の水流が発生して洗濯物Qを撹拌させる。この水流が洗濯物Qに与える摩擦や振動などの機械力によって洗濯物Qから汚れが除去されたり、洗剤水によって汚れが化学的に分解されたりすることによって洗濯物Qが本格的に洗われる。特に、本洗い工程の直前の循環浸透工程によって、洗濯物Qは、汚れが浮き出て取れやすい状態にあるので、本洗い工程では高い洗浄効果を発揮できる。   And when predetermined time passes (it is YES at step S6), a circulation penetration process is complete | finished and the control part 30 implements the main washing process which is a next process. With the start of the main washing process, the control unit 30 supplies water to the washing tub 4 additionally by opening the water supply valve 7 with the drain valve 10 closed. Thereby, detergent water accumulates in the washing tub 4 to a water level higher than the water level of the detergent water accumulated by the water supply in step S1. In the main washing process, the control unit 30 drives the motor 5 to rotate the washing tub 4 or the pulsator described above in a state where the detergent water is accumulated in the washing tub 4. Thereby, in the washing tub 4, the water flow of detergent water is generated and the laundry Q is stirred. The laundry Q is washed in earnest by removing dirt from the laundry Q by mechanical force such as friction and vibration applied to the laundry Q by the water flow, or by chemically decomposing the dirt with the detergent water. In particular, since the laundry Q is in a state in which dirt is raised and easily removed by the circulation and infiltration step immediately before the main washing step, a high cleaning effect can be exhibited in the main washing step.

制御部30は、少なくとも1回の循環処理において、モータ5を駆動させて洗濯槽4を所定以下の回転速度で低速回転させる第1の処理を実行してもよい。洗濯槽4を低速回転させるときのモータ5の回転数は、たとえば50rpmである。ちなみに、脱水工程において洗濯槽4を高速回転させるときのモータ5の回転数は、たとえば600rpm〜800rpmである。循環処理において洗濯槽4を低速回転させることによって、洗濯槽4内における洗濯物Qの偏りや、洗濯槽4内の洗剤水が出入口4Dから外に飛び散ることを抑制できる。また、制御部30は、少なくとも1回の循環処理において、モータ5の駆動を制御して洗濯槽4の間欠回転を繰り返す第2の処理を実行してもよい。洗濯槽4の間欠回転とは、モータ5のONとOFFとが繰り返されることによって洗濯槽4の停止と回転とが繰り返されることである。   The controller 30 may execute a first process in which the motor 5 is driven to rotate the washing tub 4 at a low rotation speed at a predetermined speed or less in at least one circulation process. The rotational speed of the motor 5 when rotating the washing tub 4 at a low speed is, for example, 50 rpm. Incidentally, the rotation speed of the motor 5 when rotating the washing tub 4 at a high speed in the dehydration process is, for example, 600 rpm to 800 rpm. By rotating the washing tub 4 at a low speed in the circulation process, it is possible to suppress the bias of the laundry Q in the washing tub 4 and the splashing of the detergent water in the washing tub 4 from the entrance 4D. Moreover, the control part 30 may perform the 2nd process which repeats the intermittent rotation of the washing tub 4 by controlling the drive of the motor 5 in at least one circulation process. The intermittent rotation of the washing tub 4 is that the washing tub 4 is repeatedly stopped and rotated by repeatedly turning the motor 5 on and off.

第1の処理や第2の処理により、循環路11から洗濯槽4内に戻される洗剤水を、洗濯槽4内の洗濯物Qに対して、洗濯槽4の回転方向における全域に亘って万遍なく浴びせることができる。そのため、洗剤水による洗浄効果の一層の向上を図れる。   The detergent water returned from the circulation path 11 into the washing tub 4 by the first treatment and the second treatment is all over the entire area in the rotation direction of the washing tub 4 with respect to the laundry Q in the washing tub 4. Can be bathed evenly. Therefore, the cleaning effect by the detergent water can be further improved.

制御部30は、循環浸透工程において、循環処理中では洗濯槽4を停止させ、次の循環処理を開始する前にモータ5を駆動させて洗濯槽4を所定角度だけ回転させる第3の処理を実行してもよい。これにより、循環処理中で洗濯槽4が停止した状態では、洗濯物Qにおいて洗濯槽4の回転方向における1箇所に洗濯水を集中して浴びせることができる。そして、次の循環処理を開始する前に洗濯槽4が少しだけ回転することにより、当該次の循環処理では、洗濯物Qにおいて先ほどの循環処理で洗濯水が浴びせられた部分とは別の部分に洗濯水を集中して浴びせることができる。このように洗濯物Qにおいて洗剤水がかかる位置を少しずつ変えながら循環処理を複数回繰り返すことによって、最終的に、十分な量の洗剤水を、洗濯槽4内の洗濯物Qに対して、洗濯槽4の回転方向における全域に亘って万遍なく浴びせることができる。そのため、洗剤水による洗浄効果の一層の向上を図れる。なお、第3の処理の場合には、洗濯槽4を停止させた循環処理の直後の浸透処理でも洗濯槽4を停止させてもよいし、浸透処理では洗濯槽4を回転させてもよい。浸透処理で洗濯槽4を回転させる場合には、当該先ほどの循環処理での洗濯槽4の停止位置は、制御部30によって一時的に記憶される。   In the circulation infiltration step, the control unit 30 stops the washing tub 4 during the circulation process, and drives the motor 5 to rotate the washing tub 4 by a predetermined angle before starting the next circulation process. May be executed. Thereby, in a state where the washing tub 4 is stopped during the circulation process, the washing water can be concentrated in one place in the rotation direction of the washing tub 4 in the laundry Q. And since the washing tub 4 rotates a little before starting the next circulation process, in the said next circulation process, the part different from the part where the washing water was bathed in the previous circulation process in the laundry Q It is possible to concentrate the washing water in the bath. Thus, by repeating the circulation process a plurality of times while gradually changing the position where the detergent water is applied in the laundry Q, finally, a sufficient amount of the detergent water is supplied to the laundry Q in the laundry tub 4. The washing tub 4 can be bathed uniformly over the entire area in the rotation direction. Therefore, the cleaning effect by the detergent water can be further improved. In the case of the third process, the washing tub 4 may be stopped even in the permeation process immediately after the circulation process in which the washing tub 4 is stopped, or the washing tub 4 may be rotated in the permeation process. When the washing tub 4 is rotated by the permeation process, the stop position of the washing tub 4 in the previous circulation process is temporarily stored by the control unit 30.

循環浸透工程では、第1〜第3の処理のいずれか1種類の処理だけが実施されてもよいし、第1〜第3の処理における複数種類の処理が組み合わせて実施されてもよい。たとえば、循環浸透工程の序盤における1回目〜5回目の循環処理では、第1の処理だけが実施され、6回目以降の循環処理では、第3の処理だけが実施されてもよい。この場合、1回目〜5回目の循環処理によって、循環浸透工程における早い段階で洗濯物Qの全体に万遍なく洗剤水を浴びせることができ、6回目以降の循環処理では、多量の洗剤水を洗濯物Qに局所的に浴びせることにより、洗濯物Qにおいて洗剤水がかかった部分における洗浄効果の向上を図れる。   In the circulation infiltration step, only one of the first to third processes may be performed, or a plurality of kinds of processes in the first to third processes may be performed in combination. For example, only the first process may be performed in the first to fifth circulation processes in the beginning of the circulation infiltration process, and only the third process may be performed in the sixth and subsequent circulation processes. In this case, the first to fifth circulation treatments allow the entire laundry Q to be bathed with detergent water at an early stage in the circulation permeation process. In the sixth and subsequent circulation treatments, a large amount of detergent water is poured. By washing the laundry Q locally, it is possible to improve the cleaning effect in the portion of the laundry Q where the detergent water is applied.

また、洗濯物Qの負荷量の大きさや洗濯運転のコースに応じて、第1〜第3の処理の組み合わせを任意に設定できる。たとえば、洗濯物Qが少ないことにより負荷量が小さい場合や、水を吸いやすい綿などを洗濯するコースの場合には、少量の洗剤水を洗濯物Qに均等に浴びせるだけでも洗剤水が洗濯物Qの下部まで染み込みやすいので、第1の処理や第2の処理の頻度を増やし、第3の処理の頻度を減らす。一方、洗濯物Qが多いことにより負荷量が大きい場合や、分厚い毛布などを洗濯するコースの場合には、多量の洗剤水を洗濯物Qの一部に集中して浴びせないと洗剤水が洗濯物Qの下部まで染み込みにくいので、第3の処理の頻度を増やし、第1の処理や第2の処理の頻度を減らす。   Moreover, the combination of the 1st-3rd process can be arbitrarily set according to the magnitude | size of the load amount of the laundry Q, or the course of washing operation. For example, when the load is small due to the small amount of laundry Q, or in the course of washing cotton etc. that easily absorbs water, the detergent water can be washed even if a small amount of detergent water is evenly showered on the laundry Q. Since it easily penetrates to the lower part of Q, the frequency of the first process and the second process is increased, and the frequency of the third process is decreased. On the other hand, if the load is large due to the large amount of laundry Q, or if the course is for washing thick blankets, etc., the detergent water will be washed unless a large amount of detergent water is concentrated on part of the laundry Q. Since it is difficult to penetrate to the lower part of the object Q, the frequency of the third process is increased, and the frequency of the first process and the second process is decreased.

制御部30は、循環浸透工程でのステップS1において、給水弁7を開いて、洗い工程の全体における給水量の一部を洗濯槽4に給水して洗剤水を生成するとよい。つまり、循環浸透工程では、洗い工程の全体で定められた給水量の一部を用いて洗剤水が生成される。これにより、洗濯運転全体における給水量を増加することなく、高濃度の洗剤水を生成できる。ちなみに、洗い工程の全体における給水量は、たとえば60Lであり、この場合、循環浸透工程における給水量は、60Lに対する1/3〜1/2程度に設定されて、たとえば20Lである。   In step S <b> 1 in the circulation and infiltration process, the control unit 30 may open the water supply valve 7 and supply a part of the water supply amount in the entire washing process to the washing tub 4 to generate detergent water. That is, in the circulation infiltration process, the detergent water is generated using a part of the water supply amount determined in the entire washing process. Thereby, high concentration detergent water can be generated, without increasing the amount of water supply in the whole washing operation. Incidentally, the amount of water supply in the whole washing process is, for example, 60 L. In this case, the amount of water supply in the circulation infiltration step is set to about 1/3 to 1/2 of 60 L, for example, 20 L.

このように、循環処理工程では、少ない洗剤および水で高濃度の洗剤水を生成し、この洗剤水をポンプ12によって万遍なく洗濯物Qにかけて浸透させるという循環処理および浸透処理を繰り返すことによって、高濃度の洗剤水を多量に用いてつけおき洗いする場合と同等の洗浄効果を得ることができる。ちなみに、ここでの高濃度とは、たとえば2倍度〜3倍濃度の範囲である。   As described above, in the circulation process, by repeating the circulation process and the permeation process in which a high concentration of detergent water is generated with a small amount of detergent and water, and this detergent water is uniformly permeated through the laundry Q by the pump 12, A cleaning effect equivalent to that obtained when using a large amount of high-concentration detergent water and washing it off can be obtained. Incidentally, the high concentration here is, for example, in the range of 2 to 3 times the concentration.

また、前述したように、ステップS1での給水の際に、給水路6の吐出口6Bは、洗剤収容部8を通過して洗剤を乗せた水を洗濯槽4内の洗濯物Qを外した位置へ向けて吐出する。つまり、循環浸透工程での給水の際、洗剤収容部8の洗剤を乗せた水は、洗濯物Qに直接当たらないように供給される。これにより、水に溶けきる前の超高濃度の洗剤が洗濯物Qの表面の一部だけに付着してしまうことによって、洗濯物Qの全体を万遍なく洗浄できなくなることを抑制できる。   In addition, as described above, when water is supplied in step S1, the discharge port 6B of the water supply channel 6 removes the laundry Q in the washing tub 4 from the detergent container 8 through which the detergent is placed. Dispense toward the position. That is, when water is supplied in the circulation infiltration step, the water on which the detergent in the detergent container 8 is placed is supplied so as not to directly hit the laundry Q. Accordingly, it is possible to prevent the entire laundry Q from being uniformly washed because the ultra-high concentration detergent before being completely dissolved in water adheres to only a part of the surface of the laundry Q.

制御部30は、洗濯槽4内の洗濯物Qの負荷量の大きさに応じて循環処理および浸透処理のそれぞれの処理時間を変更してもよい。具体的に、洗濯物Qが多いことにより負荷量が大きい場合には、多量の洗剤水を洗濯物Qに浴びせて浸透させる必要があるので、制御部30は、循環処理および浸透処理のそれぞれの処理時間を通常よりも長く設定する。一方、洗濯物Qが少ないことにより負荷量が小さい場合には、少量の洗剤水を洗濯物Qに浴びせて浸透させれば十分な洗浄効果を得られるので、制御部30は、循環処理および浸透処理のそれぞれの処理時間を通常よりも短く設定する。これにより、負荷量の大きさ毎に最適な循環浸透工程を実行できる。そのため、循環浸透工程における洗剤水による洗浄効果の一層の向上を図れる。   The control unit 30 may change the processing times of the circulation process and the permeation process according to the load amount of the laundry Q in the washing tub 4. Specifically, when the load is large due to the large amount of laundry Q, it is necessary to immerse a large amount of detergent water in the laundry Q so that the control unit 30 can perform each of the circulation process and the permeation process. Set the processing time longer than usual. On the other hand, when the load is small due to the small amount of the laundry Q, a sufficient cleaning effect can be obtained by allowing a small amount of detergent water to penetrate the laundry Q and permeate it. Each processing time of processing is set shorter than usual. Thereby, the optimal circulation penetration process can be performed for every magnitude | size of load amount. Therefore, it is possible to further improve the cleaning effect of the detergent water in the circulation and penetration step.

この発明は、以上に説明した実施形態に限定されるものではなく、請求項記載の範囲内において種々の変更が可能である。   The present invention is not limited to the embodiment described above, and various modifications can be made within the scope of the claims.

たとえば、前述した実施形態では、循環路11の一端部11Aが排水路9に接続されるが(図1参照)、外槽3の下端部に直接接続されてもよい。   For example, in the embodiment described above, one end 11A of the circulation path 11 is connected to the drainage path 9 (see FIG. 1), but may be directly connected to the lower end of the outer tub 3.

図4は、第1変形例に係る洗濯機1の模式図である。図5は、第2変形例に係る洗濯機1の模式図である。図6は、第3変形例に係る洗濯機1の模式図である。図4〜図6において、図1で説明した部分と同一の部分には同一番号を付して、当該部分についての説明は省略する。図4〜図6の第1〜第3変形例のように、洗濯機1は、タンク21を含んでもよい。   FIG. 4 is a schematic diagram of the washing machine 1 according to the first modification. FIG. 5 is a schematic diagram of the washing machine 1 according to the second modification. FIG. 6 is a schematic diagram of the washing machine 1 according to the third modification. 4 to 6, the same parts as those described in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted. As in the first to third modifications of FIGS. 4 to 6, the washing machine 1 may include a tank 21.

図4を参照して、タンク21は、循環洗浄工程で生成された洗剤水を溜めることができる容量を有し、筐体2内において外槽3よりの下側Z2のスペースに配置される。タンク21は、排水路9において、循環路11の一端部11Aとの接続部分と一端部9Aとの間に介装される。タンク21の内部空間は、排水路9の途中部分を構成する。排水路9において一端部9Aとタンク21との間には、排水弁22が設けられる。以下では、説明の便宜上、排水弁10を第1排水弁10といい、排水弁22を第2排水弁22という。第2排水弁22の開閉は、制御部30によって制御される。   Referring to FIG. 4, the tank 21 has a capacity capable of storing the detergent water generated in the circulation cleaning process, and is disposed in the space below Z <b> 2 from the outer tub 3 in the housing 2. The tank 21 is interposed in the drainage channel 9 between a connection part with the one end part 11A of the circulation path 11 and the one end part 9A. The internal space of the tank 21 constitutes a middle part of the drainage channel 9. In the drainage channel 9, a drainage valve 22 is provided between the one end 9 </ b> A and the tank 21. Hereinafter, for convenience of explanation, the drain valve 10 is referred to as a first drain valve 10, and the drain valve 22 is referred to as a second drain valve 22. The opening and closing of the second drain valve 22 is controlled by the control unit 30.

第1排水弁10および第2排水弁22の両方が開くと、外槽3から排水路9に流れ出た水は、一旦タンク21を経由してから他端部9Bに到達し、機外へ排出される。一方、第2排水弁22が開いた状態で第1排水弁10を閉じると、外槽3から排水路9に流れ出た水は、機外へ排出されることなく、タンク21に溜められる。タンク21には、エア抜きパイプ23の一端部23Aが上側Z1から接続される。エア抜きパイプ23は、一端部23Aから上側Z1へ延び、その他端部23Bは、外槽3の円周壁3Aの上部に接続される。これにより、タンク21内の空気がエア抜きパイプ23を通って外槽3内に逃げるので、外槽3から排水路9に流れ出た水は、タンク21内に円滑に流入できる。また、タンク21内の泡がエア抜きパイプ23内に入り込んでも、この泡は外槽3内に導かれるので、エア抜きパイプ23に泡が詰まることを抑制できる。   When both the first drain valve 10 and the second drain valve 22 are opened, the water flowing out from the outer tub 3 to the drain channel 9 once reaches the other end 9B through the tank 21 and is discharged outside the apparatus. Is done. On the other hand, when the first drain valve 10 is closed while the second drain valve 22 is open, the water flowing out from the outer tub 3 to the drain channel 9 is stored in the tank 21 without being discharged outside the apparatus. One end portion 23A of the air vent pipe 23 is connected to the tank 21 from the upper side Z1. The air vent pipe 23 extends from the one end 23 </ b> A to the upper side Z <b> 1, and the other end 23 </ b> B is connected to the upper part of the circumferential wall 3 </ b> A of the outer tub 3. Thereby, the air in the tank 21 escapes into the outer tub 3 through the air vent pipe 23, so that the water flowing out from the outer tub 3 to the drainage channel 9 can smoothly flow into the tank 21. Even if the bubbles in the tank 21 enter the air vent pipe 23, the bubbles are guided into the outer tub 3, so that the air vent pipe 23 can be prevented from being clogged.

第1〜第3変形例でも、制御部30は、図3で説明した循環浸透工程を実行する。循環浸透工程では、第1排水弁10は、常に閉じられた状態にあるが、第2排水弁22は必要に応じて開閉されてもよい。ちなみに、第2排水弁22が常に開いた状態にある場合には、タンク21は、排水路9の一部としてしか機能しないので、タンク21がない場合と同一の内容の循環浸透工程が実行される。   Also in the first to third modifications, the control unit 30 executes the circulation and infiltration step described with reference to FIG. In the circulation infiltration step, the first drain valve 10 is always closed, but the second drain valve 22 may be opened and closed as necessary. By the way, when the second drain valve 22 is always open, the tank 21 functions only as a part of the drain channel 9, so that the circulation penetration process having the same contents as the case without the tank 21 is executed. The

一方、第2排水弁22を必要に応じて開閉する場合における循環浸透工程では、制御部30は、ステップS1において、第2排水弁22を開いた状態で給水するので、洗剤水は、タンク21に溜められる。そして、制御部30は、ステップS6で所定時間が経過するまでの間、循環処理と浸透処理とを交互に複数回繰り返す。   On the other hand, in the circulation permeation process in the case where the second drain valve 22 is opened and closed as necessary, the controller 30 supplies water with the second drain valve 22 opened in step S1, so that the detergent water is stored in the tank 21. Can be stored. Then, the control unit 30 alternately repeats the circulation process and the permeation process a plurality of times until a predetermined time elapses in step S6.

ステップS2やステップS4の循環処理では、タンク21に溜まった洗剤水がポンプ12によって循環路11に取り込まれた後に、循環路11の吐水口11Bから洗濯槽4内の洗濯物Qに対して上側Z1から浴びせられる(図4の太い破線矢印を参照)。洗濯物Qに浴びせられた洗剤水は、排水路9を通ってタンク21に溜まり、再びポンプ12によって循環路11に取り込まれて洗濯物Qに浴びせられる。これにより、循環処理において、洗剤水は、タンク21を介して洗濯槽4と循環路11との間で循環する。なお、ステップS2における1回目の循環処理では、洗濯前で乾燥した状態の洗濯物Qに多くの洗剤水を染み込ませるために、第2排水弁22を閉じて洗剤水を洗濯槽4内に溜めてもよい。   In the circulation process of step S2 and step S4, after the detergent water collected in the tank 21 is taken into the circulation path 11 by the pump 12, the upper side of the laundry Q in the washing tub 4 from the water outlet 11B of the circulation path 11 Battered from Z1 (see thick dashed arrow in FIG. 4). The detergent water bathed in the laundry Q is accumulated in the tank 21 through the drainage channel 9 and is taken into the circulation channel 11 again by the pump 12 and bathed in the laundry Q. Thereby, in the circulation process, the detergent water is circulated between the washing tub 4 and the circulation path 11 via the tank 21. In the first circulation process in step S2, the second drain valve 22 is closed and the detergent water is stored in the washing tub 4 so that a large amount of the detergent water is soaked into the laundry Q that has been dried before washing. May be.

一方、ステップS3やステップS5の浸透処理では、制御部30は、最初に、ポンプ12を停止するのと同時に第2排水弁22を閉じる。これによって、直前の循環処理において循環路11から洗濯槽4に供給された洗剤水が洗濯槽4内に溜まるので、洗剤水が洗濯物Qに染み込みやすくなる。そして、浸透処理において開始から一定時間が経過した終盤のタイミングで、制御部30は、第2排水弁22を開く。これにより、洗濯槽4内の洗剤水が排水路9を通ってタンク21に溜まるので、直後の循環処理では、洗剤水の循環を速やかに開始できる。   On the other hand, in the permeation process of step S3 or step S5, the control unit 30 first closes the second drain valve 22 simultaneously with stopping the pump 12. As a result, the detergent water supplied from the circulation path 11 to the washing tub 4 in the immediately preceding circulation process is accumulated in the washing tub 4, so that the detergent water can easily soak into the laundry Q. And the control part 30 opens the 2nd drain valve 22 at the timing of the last stage when fixed time passed in the infiltration process. Thereby, since the detergent water in the washing tub 4 accumulates in the tank 21 through the drainage channel 9, the circulation of the detergent water can be started promptly in the immediately subsequent circulation process.

所定時間が経過して(ステップS6でYES)、本洗い工程を実施する場合、制御部30は、本洗い工程の開始に伴って、第2排水弁22を閉じた状態で給水弁7を開くことによって洗濯槽4に給水するのだが、その際、ポンプ12を駆動させてタンク21の洗剤水を循環路11経由で洗濯槽4に移す。このようにタンク21の洗剤水も給水に用いることによって、給水路6から供給する水の量を少なく抑えることができる。   When the predetermined time has elapsed (YES in step S6) and the main washing process is performed, the control unit 30 opens the water supply valve 7 with the second drain valve 22 closed with the start of the main washing process. In this case, water is supplied to the washing tub 4. At this time, the pump 12 is driven to move the detergent water in the tank 21 to the washing tub 4 via the circulation path 11. Thus, the amount of water supplied from the water supply path 6 can be reduced by using the detergent water in the tank 21 for water supply.

循環浸透工程でのステップS1の給水の際に洗剤を乗せた水を洗濯物Qに直接当たらないように供給するための構成として、前述したように、給水路6の吐出口6Bは、太い実線矢印で示すように、外槽3と洗濯槽4との隙間19、つまり、洗濯槽4内の洗濯物Qを外した位置へ向けて吐出する。この構成についての変形例として、第2変形例および第3変形例が挙げられる。   As described above, the discharge port 6B of the water supply channel 6 has a thick solid line as a configuration for supplying the water loaded with the detergent so as not to directly hit the laundry Q during the water supply in step S1 in the circulation permeation process. As indicated by the arrows, the liquid is discharged toward the gap 19 between the outer tub 3 and the washing tub 4, that is, the position where the laundry Q in the washing tub 4 is removed. As a modified example of this configuration, a second modified example and a third modified example are given.

図5に示す第2変形例では、給水路6は、洗剤収容部8から外槽3の円周壁3Aと筐体2との間を通って下側Z2へ延び、給水路6の他端部6Cは、円周壁3Aの下端部に接続される。この場合の給水路6は、外槽3の外を通る流路であり、他端部6Cの吐出口6Bは、外槽3と洗濯槽4との隙間19の下端部を横方向Yから臨む。一方、第2変形例の洗濯機1は、洗剤収容部8において給水路6から分岐した分岐路25を含む。分岐路25は、洗剤収容部8から下側Z2へ延びる流路であり、その下端には、洗濯槽4の出入口4Dに上側Z1から臨む給水口25Aが設けられる。分岐路25の途中には給水弁26が設けられる。第2変形例についての以下の説明に際し、便宜上、給水弁7を第1給水弁7といい、給水弁26を第2給水弁26という。第2給水弁26の開閉は、制御部30によって制御される。   In the second modification shown in FIG. 5, the water supply path 6 extends from the detergent container 8 between the circumferential wall 3 </ b> A of the outer tub 3 and the housing 2 to the lower side Z <b> 2 and the other end of the water supply path 6. 6C is connected to the lower end of the circumferential wall 3A. The water supply path 6 in this case is a flow path that passes outside the outer tub 3, and the discharge port 6 </ b> B of the other end 6 </ b> C faces the lower end of the gap 19 between the outer tub 3 and the washing tub 4 from the lateral direction Y. . On the other hand, the washing machine 1 of the second modified example includes a branch path 25 branched from the water supply path 6 in the detergent container 8. The branch path 25 is a flow path extending from the detergent container 8 to the lower side Z2, and a water supply port 25A facing the entrance 4D of the washing tub 4 from the upper side Z1 is provided at the lower end thereof. A water supply valve 26 is provided in the middle of the branch path 25. In the following description of the second modification, for convenience, the water supply valve 7 is referred to as a first water supply valve 7, and the water supply valve 26 is referred to as a second water supply valve 26. The opening and closing of the second water supply valve 26 is controlled by the control unit 30.

第2変形例での循環浸透工程では、制御部30は、ステップS1の給水の際に、第2給水弁26を閉じた状態で、第1給水弁7を開く。これにより、蛇口からの水が、洗剤収容部8を通過して洗剤を乗せ、給水路6を流れ落ちた後に、太い実線矢印で示すように、吐出口6Bから外槽3内において洗濯槽4の底壁4Bよりも下側Z2のスペース27に供給される。このとき、吐出口6Bは、給水路6を流れる水を、スペース27、つまり、洗濯槽4内の洗濯物Qを外した位置へ向けて吐出する。これにより、洗剤を乗せた水は、洗濯物Qに直接当たらないように供給される。一方、循環浸透工程の後の本洗い工程の給水の場合には、制御部30は、第1給水弁7を閉じた状態で第2給水弁26を開く。これにより、蛇口からの水が、分岐路25を通って給水口25Aから洗濯槽4内に直接供給される。つまり、初期の給水は、給水路6を用いて行われ、その後の給水は、分岐路25を用いて行われる。   In the circulation permeation process in the second modification, the control unit 30 opens the first water supply valve 7 with the second water supply valve 26 closed at the time of water supply in step S1. As a result, the water from the faucet passes through the detergent container 8, puts the detergent, and flows down the water supply channel 6, and then, as shown by the thick solid line arrow, the washing tub 4 is disposed in the outer tub 3 from the discharge port 6 </ b> B. It is supplied to the space 27 on the lower side Z2 with respect to the bottom wall 4B. At this time, the discharge port 6B discharges the water flowing through the water supply channel 6 toward the space 27, that is, the position where the laundry Q in the washing tub 4 is removed. Thereby, the water on which the detergent is placed is supplied so as not to directly hit the laundry Q. On the other hand, in the case of water supply in the main washing process after the circulation infiltration process, the control unit 30 opens the second water supply valve 26 with the first water supply valve 7 closed. Thereby, the water from the faucet is directly supplied into the washing tub 4 from the water supply port 25 </ b> A through the branch path 25. That is, the initial water supply is performed using the water supply channel 6, and the subsequent water supply is performed using the branch channel 25.

図6に示す第3変形例では、給水路6の他端部6Cは、外槽3の出入口3Dを通り、他端部6Cの吐出口6Bは、洗濯槽4の出入口4Dに上側Z1から臨む。第3変形例の洗濯機1は、洗濯槽4の内部に、ガイド部28が設けられる。ガイド部28は、洗濯槽4の円周壁4Aの上端部から下端部までの範囲に亘って軸線Jに沿って上下方向Zに延びる樋状であり、その平断面は、軸線J側へ凸湾曲した円弧状に形成される。ガイド部28は、円周壁4Aの周上1箇所を軸線J側から覆うように円周壁4Aに固定される。これにより、ガイド部28と円周壁4Aとの間には、上下方向Zに延びるガイド流路29が形成される。ガイド部28の上端部は、軸線J側へ膨らんだ椀状に形成された受け部28Aである。ガイド流路29は、受け部28Aから上側Z1へ露出される。吐出口6Bは、受け部28Aに対して上側Z1から対向配置される。   In the third modification shown in FIG. 6, the other end 6C of the water supply channel 6 passes through the inlet / outlet 3D of the outer tub 3, and the discharge port 6B of the other end 6C faces the inlet / outlet 4D of the washing tub 4 from the upper side Z1. . In the washing machine 1 of the third modified example, a guide portion 28 is provided inside the washing tub 4. The guide portion 28 has a bowl shape extending in the up-down direction Z along the axis J over the range from the upper end portion to the lower end portion of the circumferential wall 4A of the washing tub 4, and the flat cross section is convexly curved toward the axis J side. It is formed in a circular arc shape. The guide portion 28 is fixed to the circumferential wall 4A so as to cover one place on the circumference of the circumferential wall 4A from the axis J side. Thereby, a guide channel 29 extending in the vertical direction Z is formed between the guide portion 28 and the circumferential wall 4A. The upper end portion of the guide portion 28 is a receiving portion 28A formed in a bowl shape that swells toward the axis J side. The guide channel 29 is exposed from the receiving portion 28A to the upper side Z1. The discharge port 6B is disposed to face the receiving portion 28A from the upper side Z1.

第3変形例での循環浸透工程では、制御部30は、ステップS1での給水の際に、給水弁7を開く。これにより、蛇口からの水が、洗剤収容部8を通過して洗剤を乗せて給水路6を通過し、太い実線矢印で示すように、吐出口6Bからガイド部28の受け部28Aに落下する。受け部28Aに受けられた水は、ガイド流路29を流れ落ち、洗濯槽4の貫通穴4Eから洗濯槽4の外へ漏れて、外槽3内において洗濯槽4の底壁4Bよりも下側Z2のスペース27に到達する。このとき、吐出口6Bは、給水路6を流れる水を、ガイド部28、つまり、洗濯槽4内の洗濯物Qを外した位置へ向けて吐出する。これにより、洗剤を乗せた水は、洗濯物Qに直接当たらないように供給される。   In the circulation permeation process in the third modification, the control unit 30 opens the water supply valve 7 when water is supplied in step S1. As a result, water from the faucet passes through the detergent container 8, puts the detergent, passes through the water supply path 6, and falls from the discharge port 6 </ b> B to the receiving part 28 </ b> A of the guide part 28 as indicated by a thick solid arrow. . The water received by the receiving portion 28A flows down the guide channel 29, leaks out of the washing tub 4 from the through hole 4E of the washing tub 4, and is below the bottom wall 4B of the washing tub 4 in the outer tub 3. The space 27 of Z2 is reached. At this time, the discharge port 6B discharges the water flowing through the water supply channel 6 toward the guide portion 28, that is, the position where the laundry Q in the washing tub 4 is removed. Thereby, the water on which the detergent is placed is supplied so as not to directly hit the laundry Q.

1 洗濯機
4 洗濯槽
5 モータ
6 給水路
6B 吐出口
7 給水弁
8 洗剤収容部
11 循環路
12 ポンプ
30 制御部
J 軸線
Q 洗濯物
Z1 上側
DESCRIPTION OF SYMBOLS 1 Washing machine 4 Washing tub 5 Motor 6 Water supply path 6B Discharge port 7 Water supply valve 8 Detergent storage part 11 Circulation path 12 Pump 30 Control part J Axis line Q Laundry Z1 Upper side

Claims (7)

縦に延びる軸線を有し、洗濯物を収容し、水が溜められる洗濯槽と、
洗剤が混ざった洗剤水を前記洗濯槽内から汲み上げて前記洗濯槽内に上側から戻すための循環路と、
前記洗濯槽内の洗剤水を前記循環路に取り込んで前記循環路内で上昇させるポンプと、
前記ポンプを駆動させることによって洗剤水を前記洗濯槽と前記循環路との間で循環させて洗濯物に浴びせる循環処理と、前記ポンプの駆動を停止させて前記洗濯槽内で洗剤水を洗濯物に浸透させる浸透処理とを交互に繰り返す循環浸透工程を含む洗濯運転を実行する実行手段と、
を含む、洗濯機。
A laundry tub having a longitudinally extending axis, containing laundry and storing water;
A circulation path for drawing up detergent water mixed with detergent from the washing tub and returning it to the washing tub from above;
A pump that takes in the detergent water in the washing tub into the circulation path and raises it in the circulation path;
Circulation treatment in which detergent water is circulated between the washing tub and the circulation path by driving the pump so as to be put on the laundry, and the detergent is washed in the washing tub by stopping the driving of the pump. Execution means for performing a washing operation including a circulation permeation step that alternately repeats the permeation treatment to be permeated into
Including a washing machine.
前記洗濯槽を回転させるモータを含み、
前記実行手段は、少なくとも1回の前記循環処理において、前記モータを駆動させて前記洗濯槽を所定以下の回転速度で低速回転させる、請求項1に記載の洗濯機。
A motor for rotating the washing tub;
2. The washing machine according to claim 1, wherein the execution unit drives the motor to rotate the washing tub at a low speed below a predetermined speed in at least one circulation process.
前記洗濯槽を回転させるモータを含み、
前記実行手段は、少なくとも1回の前記循環処理において、前記モータの駆動を制御して前記洗濯槽の間欠回転を繰り返す、請求項1または2に記載の洗濯機。
A motor for rotating the washing tub;
The washing machine according to claim 1 or 2, wherein the execution unit repeats intermittent rotation of the washing tub by controlling driving of the motor in at least one circulation process.
前記洗濯槽を回転させるモータを含み、
前記実行手段は、前記循環浸透工程において、前記循環処理中では前記洗濯槽を停止させ、次の前記循環処理を開始する前に前記モータを駆動させて前記洗濯槽を所定角度だけ回転させる、請求項1〜3のいずれか一項に記載の洗濯機。
A motor for rotating the washing tub;
The execution means stops the washing tub during the circulation process and drives the motor to rotate the washing tub by a predetermined angle before starting the next circulation process in the circulation infiltration step. Item 4. The washing machine according to any one of Items 1 to 3.
前記洗濯槽に給水するための給水路と、
前記給水路を開閉する給水弁と、
を含み、
前記洗濯運転は、前記循環浸透工程と、前記循環浸透工程の後に洗濯物を本格的に洗うために前記洗濯槽に水を溜める本洗い工程とで構成された洗い工程を含み、
前記実行手段は、前記循環浸透工程において、前記給水弁を開いて、前記洗い工程の全体における給水量の一部を前記洗濯槽に給水して洗剤水を生成する、請求項1〜4のいずれか一項に記載の洗濯機。
A water supply channel for supplying water to the washing tub;
A water supply valve for opening and closing the water supply channel;
Including
The washing operation includes a washing step composed of the circulation and infiltration step, and a main washing step in which water is stored in the washing tub in order to thoroughly wash the laundry after the circulation and infiltration step,
The said execution means opens the said water supply valve in the said circulation infiltration process, and supplies a part of water supply amount in the whole of the said washing process to the said washing tub, and produces | generates detergent water any one of Claims 1-4 A washing machine according to claim 1.
前記給水路に接続され、洗剤を収容する洗剤収容部を含み、
前記給水路は、前記洗剤収容部を通過して前記給水路を流れる水を前記洗濯槽内の洗濯物を外した位置へ向けて吐出する吐出口を有する、請求項5に記載の洗濯機。
A detergent container connected to the water supply path and containing a detergent;
The washing machine according to claim 5, wherein the water supply passage has a discharge port that discharges water flowing through the water supply passage through the detergent container toward a position where the laundry is removed from the washing tub.
前記実行手段は、前記洗濯槽内の洗濯物の負荷量の大きさに応じて前記循環処理および前記浸透処理のそれぞれの処理時間を変更する、請求項1〜6のいずれか一項に記載の洗濯機。   The said execution means changes each processing time of the said circulation process and the said osmosis | permeation process according to the magnitude | size of the load amount of the laundry in the said washing tub, The Claim 1 any one of Claims 1-6. Washing machine.
JP2015193923A 2015-09-30 2015-09-30 Washing machine Pending JP2017064078A (en)

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