JP2005131115A - Washing machine - Google Patents

Washing machine Download PDF

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Publication number
JP2005131115A
JP2005131115A JP2003370891A JP2003370891A JP2005131115A JP 2005131115 A JP2005131115 A JP 2005131115A JP 2003370891 A JP2003370891 A JP 2003370891A JP 2003370891 A JP2003370891 A JP 2003370891A JP 2005131115 A JP2005131115 A JP 2005131115A
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Japan
Prior art keywords
rotating drum
rotation
washing
water
washing machine
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JP2003370891A
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Japanese (ja)
Inventor
Yoshihisa Ogura
嘉尚 小倉
Ryuta Yazawa
龍太 矢澤
Hiroyuki Saito
弘幸 齊藤
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2003370891A priority Critical patent/JP2005131115A/en
Priority to KR1020040085273A priority patent/KR100645651B1/en
Priority to SG200406878A priority patent/SG111305A1/en
Priority to MYPI20044440A priority patent/MY141956A/en
Priority to TW093132739A priority patent/TWI261638B/en
Priority to CNB2004100877749A priority patent/CN1322194C/en
Publication of JP2005131115A publication Critical patent/JP2005131115A/en
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/43—Control of cleaning or disinfection of washing machine parts, e.g. of tubs
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/10—Power supply arrangements, e.g. stand-by circuits
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/008—Methods for washing, rinsing or spin-drying for disinfecting the tub or the drum
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/20—Operation modes, e.g. delicate laundry washing programs, service modes or refreshment cycles
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing machine that effectively removes a foreign matter such as a detergent residue or mold sticking to the interior and exterior surface of a rotary drum having the center shaft of rotation nearly in the horizontal direction or nearly in the inclining direction and the inwall surface of a water receiving tank. <P>SOLUTION: The washing machine performs the combination of a first washing process in which a control means 20 rotates the rotary drum 1 at a first revolution by controlling a motor 5 after supplying water to a set water level by controlling a water supply valve 14 at a first set revolution, a second washing process in which the control means rotates the rotary drum at a second set revolution as a revolution causing a circulating stream between the outer surface of the rotary drum and an inner wall surface of the water receiving tank 3, higher than the first set revolution, and a rotation stopping process in which the control means stops the rotary drum, more than one time for a set time. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、水平方向または傾斜方向に回転中心軸を有する回転ドラム内で洗濯物の洗濯、すすぎ、脱水を行うと共に、回転ドラムの内外表面および回転ドラムを内包した水受け槽の内壁面に固着した洗剤やカビ等の異物の洗浄を行う洗濯機に関する。   The present invention performs washing, rinsing and dewatering of laundry in a rotating drum having a central axis of rotation in a horizontal direction or an inclined direction, and is fixed to the inner and outer surfaces of the rotating drum and the inner wall surface of the water receiving tank containing the rotating drum. The present invention relates to a washing machine that cleans foreign substances such as detergent and mold.

従来より、垂直方向に回転中心軸を有する洗濯槽の外壁や洗濯槽を内包した外槽の内壁に付着した、洗剤成分と水道水中の金属イオンとが結合して発生した金属石鹸や、この金属石鹸に洗濯物に含まれる微生物が作用して発生した黒カビ等の異物を洗浄する方法が提案されている（例えば、特許文献１参照）。   Conventionally, metal soap generated by the combination of detergent components and metal ions in tap water attached to the outer wall of a washing tub having a central axis of rotation in the vertical direction or the inner wall of the outer tub enclosing the washing tub, or the metal A method for cleaning foreign substances such as black mold generated by the action of microorganisms contained in laundry on soap has been proposed (for example, see Patent Document 1).

この従来例１では、洗濯槽が垂直方向に回転軸を有するため、洗濯槽内に所定水位まで給水を行い、洗浄剤を投入し、攪拌翼を所定時間回転させて洗浄液を作成する。ついで、洗濯槽を間欠的に回転させるつけおき行程を実行し、洗濯槽の外壁や外槽の内壁に洗浄液を行き渡らせ、このつけおき行程を所定時間実行して、洗浄液を異物に十分作用させて、異物を剥がしていく。その後、再び攪拌翼を回転させて、洗濯槽内の洗浄液をポンプ室から循環水路を経由して糸屑フィルターに送水し、洗浄液に含まれる異物を糸屑フィルターに回収するというものである。   In Conventional Example 1, since the washing tub has a rotation axis in the vertical direction, water is supplied to the predetermined water level in the washing tub, the cleaning agent is added, and the stirring blade is rotated for a predetermined time to prepare the cleaning liquid. Next, a soaking process is performed in which the washing tub is rotated intermittently, and the cleaning liquid is spread over the outer wall of the washing tub and the inner wall of the outer tub. Remove the foreign material. Thereafter, the stirring blade is rotated again, the cleaning liquid in the washing tub is fed from the pump chamber to the lint filter via the circulation channel, and the foreign matter contained in the cleaning liquid is collected in the lint filter.

また、最近では、水平方向または傾斜方向に回転中心軸を有する回転ドラム内で洗濯物の洗濯、すすぎ、脱水を行う回転ドラム式の洗濯機が提案されている（例えば、特許文献２参照：従来例２）。
特開２００２−２４８２９５号公報 特開平１０−２０１９９１号公報 Recently, there has been proposed a rotary drum type washing machine that performs washing, rinsing, and dewatering of laundry in a rotary drum having a rotation center axis in a horizontal direction or an inclination direction (see, for example, Patent Document 2: Conventional). Example 2).
JP 2002-248295 A Japanese Patent Laid-Open No. 10-201991

上記従来例１のように、垂直方向に回転中心軸を有する洗濯機では、所定水位まで給水を行い洗浄液を作成することで、洗濯槽の内外壁および外槽の内壁のほぼ全体が十分に洗浄液に浸漬するため、洗濯槽および攪拌翼の回転により、洗濯槽の外壁や外槽の内壁に付着した異物を十分に洗浄することができる。   In the washing machine having the central axis of rotation in the vertical direction as in the conventional example 1, the cleaning liquid is prepared by supplying water up to a predetermined water level, so that the entire inner and outer walls of the washing tub and the inner wall of the outer tub are sufficiently cleaned. Therefore, the foreign matter adhering to the outer wall of the washing tub or the inner wall of the outer tub can be sufficiently washed by the rotation of the washing tub and the stirring blade.

しかしながら、上記従来例２のように、水平方向または傾斜方向に回転中心軸を有するドラム式の洗濯機では、回転ドラムの内外表面および回転ドラムを内包した水受け槽の内壁面の一部までしか給水ができないため、そこに付着した異物の洗浄方法については提案されておらず、また従来例１の洗浄方法を適用したとしても、洗浄効果が十分に得られないものと考えられる。   However, in the drum type washing machine having the rotation center axis in the horizontal direction or the inclination direction as in the conventional example 2, only the inner and outer surfaces of the rotating drum and a part of the inner wall surface of the water receiving tub containing the rotating drum are included. Since water supply cannot be performed, no cleaning method for foreign matter adhering thereto is proposed, and even if the cleaning method of Conventional Example 1 is applied, it is considered that a sufficient cleaning effect cannot be obtained.

本発明は、かかる従来の問題点に鑑みてなされたものであり、その目的は、水平方向または傾斜方向に回転中心軸を有する回転ドラムの内外表面、および水受け槽の内壁面に固着した洗剤やカビ等の異物の洗浄効果が十分に得られる洗濯機を提供することにある。   The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a detergent fixed to the inner and outer surfaces of a rotating drum having a rotation center axis in the horizontal direction or the inclined direction, and the inner wall surface of a water receiving tank. Another object of the present invention is to provide a washing machine that can sufficiently obtain a cleaning effect of foreign matters such as mold and mold.

前記の目的を達成するため、本発明に係る洗濯機は、洗濯物を収納し水平方向または傾斜方向に回転中心軸を有する回転ドラムと、回転ドラムを内包し洗濯機本体に弾性的に支持する水受け槽と、回転ドラムを駆動するモータと、水受け槽内に給水を行う給水手段と、洗濯機の動作を設定する入力設定手段と、入力設定手段により設定された洗濯動作の制御および給水手段とモータの制御を行う制御手段とを備えた洗濯機であって、洗濯物が回転ドラムに存在しない無負荷状態で、制御手段は、給水手段を制御して設定水位まで給水させたのち、モータを制御して、第１の設定回転数で回転ドラムを回転させる第１の洗い行程と、第１の設定回転数よりも高くかつ回転ドラムの外表面と水受け槽の内壁面との間に循環流を生じせしめる回転数である第２の設定回転数で回転ドラムを回転させる第２の洗い行程と、回転ドラムの回転を停止させる回転停止行程との組み合わせを設定時間だけ複数回行わせる構成を有している。   In order to achieve the above-described object, a washing machine according to the present invention stores a laundry and has a rotating drum having a rotation center axis in a horizontal direction or an inclination direction, and includes the rotating drum and elastically supports the washing machine body. Water receiving tank, motor for driving the rotating drum, water supply means for supplying water into the water receiving tank, input setting means for setting the operation of the washing machine, control of washing operation and water supply set by the input setting means A washing machine having a control means for controlling the motor and the motor, and in a no-load state where the laundry does not exist in the rotating drum, the control means controls the water supply means to supply water to the set water level, A first washing process for controlling the motor to rotate the rotating drum at the first set rotational speed, and between the outer surface of the rotating drum and the inner wall surface of the water receiving tank that is higher than the first set rotational speed. Rotation speed that causes a circulating flow It has a second washing step of rotating the rotary drum at a certain second predetermined rotational speed, a structure to perform a plurality of times only the combination of setting time with the rotation stopping step of stopping the rotation of the rotary drum.

この構成によれば、第１の設定回転数（低い回転数、例えば３５ｒ／ｍｉｎ）で回転ドラムを回転させる第１の洗い行程で、回転ドラムの内外表面を洗浄することが可能となる。また、第２の設定回転数（高い回転数、例えば１４０ｒ／ｍｉｎ）で回転ドラムを回転させる第２の洗い行程で、回転ドラムの回転時による摩擦と遠心力により回転ドラムの外表面と水受け槽の内壁面との間に循環流が発生し、発生した循環流により水受け槽の内壁面を洗浄することが可能となる。特に、回転ドラムおよび水受け槽の上部は洗濯中に飛散した洗剤や汚れの粒子が残り、洗濯水がかからず洗浄がほとんど行われないが、この循環流により上部を洗浄することが可能となる。また、回転ドラムの回転停止行程により、洗剤液への浸漬による洗浄効果が得られるとともに、停止していることから消費電力を削減することも可能である。さらに、第１の洗い行程、第２の洗い行程、および回転停止行程の組み合わせを長時間の設定時間（例えば、１０時間）にわたって繰り返し複数回行うことで、固着した洗剤カスやカビなども洗浄できる。   According to this configuration, it is possible to clean the inner and outer surfaces of the rotating drum in the first washing process in which the rotating drum is rotated at the first set rotation speed (low rotation speed, for example, 35 r / min). Further, in the second washing step of rotating the rotating drum at the second set rotation speed (high rotation speed, for example, 140 r / min), the outer surface of the rotating drum and the water receiver are received by friction and centrifugal force caused by the rotation of the rotating drum. A circulating flow is generated between the inner wall surface of the tank and the inner wall surface of the water receiving tank can be cleaned by the generated circulating flow. In particular, the upper part of the rotating drum and the water receiving tub remains with detergent and dirt particles scattered during washing, and the washing water is not applied and the washing is hardly performed, but this circulation flow can wash the upper part. Become. In addition, the rotation stop process of the rotary drum provides a cleaning effect by immersion in the detergent solution, and can also reduce power consumption because it is stopped. Furthermore, the fixed detergent residue, mold, etc. can be washed by repeatedly performing the combination of the first washing step, the second washing step, and the rotation stopping step a plurality of times over a long set time (for example, 10 hours). .

また、本発明に係る洗濯機において、制御手段は、第１の洗い行程において、モータを制御して、各設定時間で回転ドラムの正転と反転を切り替えさせることが好ましい。   In the washing machine according to the present invention, it is preferable that the control means controls the motor in the first washing process to switch between normal rotation and reverse rotation of the rotating drum at each set time.

この構成によれば、第１の設定回転数で回転ドラムを回転させる第１の洗い行程は、回転ドラムの内外表面を洗浄することが可能であるが、回転ドラムの正転と反転が切り替わることで、回転ドラムの内外表面の凹凸部を左右の水流で洗浄することが可能となり、正転と反転を繰り返す場合は、切替えのタイミングで乱流が起こり、さらに洗浄効果が得られる。   According to this configuration, in the first washing process in which the rotating drum is rotated at the first set number of rotations, it is possible to clean the inner and outer surfaces of the rotating drum, but the forward rotation and the inversion of the rotating drum are switched. Thus, it becomes possible to clean the uneven portions on the inner and outer surfaces of the rotating drum with the left and right water flows. When the forward rotation and the reverse rotation are repeated, turbulence occurs at the timing of switching, and a cleaning effect is further obtained.

また、本発明に係る洗濯機において、制御手段は、第２の洗い行程において、モータを制御して、各設定時間で回転ドラムの正転と反転を切り替えさせることが好ましい。   In the washing machine according to the present invention, it is preferable that the control means controls the motor in the second washing step to switch between normal rotation and reverse rotation of the rotating drum at each set time.

この構成によれば、第２の設定回転数で回転ドラムを回転させる第２の洗い行程は、循環流により水受け槽の内壁面を洗浄することが可能であるが、回転ドラムの正転と反転が切替わることで、水受け槽の内壁面の凹凸部を左右の水流で洗浄することが可能となり、正転と反転を繰り返す場合は、切替えのタイミングで乱流が起こり、さらに洗浄効果が得られる。   According to this configuration, in the second washing step of rotating the rotating drum at the second set number of rotations, the inner wall surface of the water receiving tank can be washed by the circulating flow. By switching the reversal, it becomes possible to clean the uneven part of the inner wall surface of the water receiving tank with the left and right water flow, and when repeating normal rotation and reversal, turbulent flow occurs at the switching timing, and the cleaning effect is further improved can get.

また、本発明に係る洗濯機において、設定水位は、洗濯物が回転ドラムに存在する通常の洗濯動作状態における最高水位と同等以上であることが好ましい。   In the washing machine according to the present invention, the set water level is preferably equal to or higher than the maximum water level in a normal washing operation state in which the laundry is present on the rotating drum.

この構成によれば、洗浄液の浸漬効果を高めることができる。   According to this configuration, the immersion effect of the cleaning liquid can be enhanced.

また、本発明に係る洗濯機において、制御手段は、第１の洗い行程、第２の洗い行程、および回転停止行程の組み合わせにより、回転ドラムの内外表面および水受け槽の内壁面の洗浄を行わせたのち、給水手段およびモータを制御して、排水行程、給水行程、および回転ドラムの回転行程の組み合わせにより、回転ドラムの内外表面および水受け槽の内壁面のすすぎを自動的に行わせることが好ましい。   In the washing machine according to the present invention, the control means cleans the inner and outer surfaces of the rotating drum and the inner wall surface of the water receiving tub by a combination of the first washing step, the second washing step, and the rotation stopping step. After that, the water supply means and the motor are controlled so that the inner and outer surfaces of the rotating drum and the inner wall surface of the water receiving tank are automatically rinsed by a combination of the draining process, the water supplying process, and the rotating process of the rotating drum. Is preferred.

この構成によれば、注水・洗浄・排水・すすぎを手動で設定する必要がなく、回転ドラムの内外表面および水受け槽の内壁面の洗浄およびすすぎを簡単に行うことができる。   According to this configuration, it is not necessary to manually set water injection / cleaning / drainage / rinsing, and cleaning and rinsing of the inner and outer surfaces of the rotating drum and the inner wall surface of the water receiving tank can be easily performed.

また、本発明に係る洗濯機において、回転ドラムの内外表面および水受け槽の内壁面の洗浄およびすすぎは、入力設定手段の設定により行われることが好ましい。   In the washing machine according to the present invention, it is preferable that the inner and outer surfaces of the rotating drum and the inner wall surface of the water receiving tub are cleaned and rinsed by setting of the input setting means.

この構成によれば、回転ドラムの内外表面および水受け槽の内壁面の洗浄およびすすぎをさらに容易に行うことができる。   According to this configuration, it is possible to more easily clean and rinse the inner and outer surfaces of the rotating drum and the inner wall surface of the water receiving tank.

さらに、本発明に係る洗濯機において、水受け槽は、回転ドラムの回転中心軸の方向で下部に形成された溝部を備えることが好ましい。   Furthermore, the washing machine which concerns on this invention WHEREIN: It is preferable that a water receiving tank is provided with the groove part formed in the lower part in the direction of the rotation center axis | shaft of a rotating drum.

この構成によれば、第２の設定回転数で回転ドラムを回転させる第２の洗い行程において、循環流が溝部で乱流を発生し、より高い洗浄効果を得ることが可能となる。   According to this configuration, in the second washing step in which the rotating drum is rotated at the second set rotation speed, the circulating flow generates turbulent flow in the groove portion, and a higher washing effect can be obtained.

本発明によれば、水平方向または傾斜方向に回転中心軸を有する回転ドラムの内外表面、および水受け槽の内壁面に固着した洗剤カスやカビ等の異物の洗浄効果を十分に得ることが可能となる、という格別な効果を奏する。   According to the present invention, it is possible to sufficiently obtain the cleaning effect of foreign matter such as detergent residue and mold fixed to the inner and outer surfaces of the rotating drum having the rotation center axis in the horizontal direction or the inclined direction and the inner wall surface of the water receiving tank. It has a special effect of becoming.

以下、本発明の好適な実施の形態について、図面を参照しながら説明する。   Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の一実施の形態に係る洗濯機の一構成例を示す断面図である。図１において、回転ドラム１は、有底円筒形に形成され、外周部に多数の通水孔２が全面に設けられて、水受け槽３内に回転自在に配設されている。回転ドラム１の回転中心に傾斜方向に回転軸（回転中心軸）４が設けられ、回転ドラム１の軸心方向は正面側から背面側に向けて下向きに傾斜させている。この回転軸４に、水受け槽３の背面に取り付けたモータ５が連結され、モータ５により回転ドラム１が正転、逆転方向に回転駆動される。回転ドラム１の内壁面には数個の突起板６が設けられている。   FIG. 1 is a cross-sectional view illustrating a configuration example of a washing machine according to an embodiment of the present invention. In FIG. 1, a rotating drum 1 is formed in a bottomed cylindrical shape, and a large number of water passage holes 2 are provided on the entire surface of the outer periphery, and are rotatably disposed in a water receiving tank 3. A rotation axis (rotation center axis) 4 is provided in the inclination direction at the rotation center of the rotary drum 1, and the axial center direction of the rotation drum 1 is inclined downward from the front side toward the back side. A motor 5 attached to the rear surface of the water receiving tank 3 is connected to the rotating shaft 4, and the rotating drum 1 is rotationally driven by the motor 5 in the forward and reverse directions. Several protruding plates 6 are provided on the inner wall surface of the rotating drum 1.

水受け槽３の正面側の上向き傾斜面に設けた開口部を蓋体７により開閉自在に覆い、この蓋体７を開くことにより、衣類出入口８を通して回転ドラム１内に洗濯物を入れ、回転ドラム１内から洗濯物を取り出せるようにしている。蓋体７を上向き傾斜面に設けているため、使用者は洗濯物を出し入れする際に、腰を屈める具合を少なくして行うことができる。   The opening provided in the upward inclined surface on the front side of the water receiving tub 3 is covered with a lid 7 so that it can be opened and closed. By opening the lid 7, the laundry is put into the rotary drum 1 through the clothing entrance 8 and rotated. The laundry can be taken out from the drum 1. Since the lid body 7 is provided on the upward inclined surface, the user can reduce the degree of bending the waist when putting in and out the laundry.

水受け槽３は、洗濯機本体９からばね体１０とダンパー１１により揺動可能に吊り下げられており、水受け槽３の下部に排水経路１２の一端を接続し、排水経路１２の他端を排水弁１３に接続して、水受け槽３内の洗濯水を排水するようにしている。   The water receiving tub 3 is suspended from the washing machine body 9 by a spring body 10 and a damper 11 so as to be swingable. One end of the drainage path 12 is connected to the lower part of the water receiving tub 3, and the other end of the drainage path 12 is connected. Is connected to the drain valve 13 to drain the washing water in the water receiving tank 3.

また、水受け槽３の下部には、回転ドラムの回転軸方向に溝部３００が設けられている。図２および図３は、それぞれ、溝部３００の構成例および変形例を示す部分断面図である。図２に示す例では、溝部３００は、側壁面３００ａと底面３００ｂを有し、側壁面３００ａは、底面３００ｂに対して直角に形成されている。一方、図３に示す例では、溝部３００は、側壁面３００ａが、底面３００ｂに対して鋭角をなすように形成されている。   A groove 300 is provided in the lower part of the water receiving tank 3 in the direction of the rotation axis of the rotary drum. 2 and 3 are partial cross-sectional views showing a configuration example and a modification of the groove portion 300, respectively. In the example shown in FIG. 2, the groove part 300 has a side wall surface 300a and a bottom surface 300b, and the side wall surface 300a is formed at right angles to the bottom surface 300b. On the other hand, in the example shown in FIG. 3, the groove portion 300 is formed such that the side wall surface 300a forms an acute angle with respect to the bottom surface 300b.

図２および図３に示す溝部３００は、後ほど詳細に説明する回転ドラム１と水受け槽３の槽洗浄シーケンスにおいて、高い回転数である第２の設定回転数で回転ドラムを回転させる第２の洗い行程で、循環流に図中矢印で示す乱流を発生させ、より高い洗浄効果を得るために設けられている。   The groove 300 shown in FIGS. 2 and 3 is a second drum that rotates the rotating drum at a second set rotational speed which is a high rotational speed in the tank cleaning sequence of the rotating drum 1 and the water receiving tank 3 which will be described in detail later. It is provided in order to obtain a higher cleaning effect by generating a turbulent flow indicated by an arrow in the figure in the circulation flow in the washing process.

図１に戻って、給水弁（給水手段）１４は、給水経路１５を通して水受け槽３内に水を給水するために、また、水位検知手段１６は、水受け槽３内の水位を検知するために設けられている。   Returning to FIG. 1, the water supply valve (water supply means) 14 supplies water into the water receiving tank 3 through the water supply path 15, and the water level detection means 16 detects the water level in the water receiving tank 3. It is provided for.

なお、本実施の形態では、回転ドラム１の回転中心に傾斜方向に回転軸４を設け、回転ドラム１の軸心方向を正面側から背面側に向けて下向きに傾斜させているが、回転ドラム１の回転中心に水平方向に回転軸４を設け、回転ドラム１の軸心方向を水平方向にしてもよい。   In this embodiment, the rotary shaft 4 is provided in the tilt direction at the rotation center of the rotary drum 1 and the axial center direction of the rotary drum 1 is tilted downward from the front side to the back side. The rotation shaft 4 may be provided in the horizontal direction at the center of rotation 1 and the axial center direction of the rotary drum 1 may be set in the horizontal direction.

また、図１には例示していないが、回転ドラム１内に温風を送風する送風ファン１７と温風を加熱するヒータ１８（図４参照）とが設けられ、回転ドラム１内の洗濯物を乾燥する乾燥機能を有している。   Although not illustrated in FIG. 1, a blower fan 17 that blows hot air and a heater 18 (see FIG. 4) that heats the hot air are provided in the rotary drum 1, and the laundry in the rotary drum 1 is provided. It has a drying function for drying.

制御装置１９は、図４に示すように構成されており、モータ５、排水弁（ＤＶ）１３、給水弁（ＦＶ）１４、送風ファン（Ｆ）１７、ヒータ（Ｈ）１８などの動作を制御し、洗濯、すすぎ、脱水、乾燥の一連の行程を逐次制御するマイクロコンピュータからなる制御手段２０を有している。   The control device 19 is configured as shown in FIG. 4 and controls operations of the motor 5, the drain valve (DV) 13, the water supply valve (FV) 14, the blower fan (F) 17, the heater (H) 18, and the like. And a control means 20 comprising a microcomputer for sequentially controlling a series of steps of washing, rinsing, dewatering and drying.

制御手段２０は、運転コース等を設定するための入力設定手段２１からの情報を入力して、その情報を基に表示手段２２で表示して使用者に知らせるとともに、入力設定手段２１により運転開始が設定されると、水受け槽３内の水位を検知する水位検知手段１６等からのデータを入力して負荷駆動手段２３を介して、排水弁１３、給水弁１４、送風ファン１７、ヒータ１８などの動作を制御し、洗濯・乾燥運転を行う。   The control means 20 inputs information from the input setting means 21 for setting a driving course and the like, displays the information on the display means 22 based on the information, notifies the user, and starts the operation by the input setting means 21. Is set, the data from the water level detection means 16 for detecting the water level in the water receiving tank 3 is input and the drain valve 13, the water supply valve 14, the blower fan 17, and the heater 18 are input via the load driving means 23. Control the operation of the washing, drying operation.

このとき、制御手段２０は、モータ５のロータの位置を検出する位置検出手段２４（２４ａ、２４ｂ、２４ｃ）からの情報に基づいて、駆動回路２５を介してインバータ２６を制御することによりモータ５を回転制御するようにしている。モータ５は直流ブラシレスモータで、図示していないが、３相巻線を有するステータと、リング上に２極の永久磁石を配設しているロータとで構成され、ステータは３相巻線を構成する第１の巻線５ａ、第２の巻線５ｂ、第３の巻線５ｃを、スロットを設けた鉄心に巻き付けて構成されている。   At this time, the control unit 20 controls the inverter 26 via the drive circuit 25 based on information from the position detection unit 24 (24a, 24b, 24c) that detects the position of the rotor of the motor 5. The rotation is controlled. The motor 5 is a direct current brushless motor, which is not shown, and is composed of a stator having a three-phase winding and a rotor having a two-pole permanent magnet disposed on the ring. The stator has a three-phase winding. The first winding 5a, the second winding 5b, and the third winding 5c to be configured are wound around an iron core provided with a slot.

インバータ２６は、パワートランジスタ（例えば、絶縁ゲート型バイポーラトランジスタ（ＩＧＢＴ））と逆導通ダイオードの並列回路からなるスイッチング素子で構成されている。スイッチング素子は、第１のスイッチング素子２６ａと第２のスイッチング素子２６ｂの直列回路と、第３のスイッチング素子２６ｃと第４のスイッチング素子２６ｄの直列回路と、第５のスイッチング素子２６ｅと第６のスイッチング素子２６ｆの直列回路とから構成され、各スイッチング素子の直列回路は並列接続されている。   The inverter 26 is composed of a switching element including a parallel circuit of a power transistor (for example, an insulated gate bipolar transistor (IGBT)) and a reverse conducting diode. The switching elements include a series circuit of a first switching element 26a and a second switching element 26b, a series circuit of a third switching element 26c and a fourth switching element 26d, a fifth switching element 26e and a sixth switching element. The switching element 26f is composed of a series circuit, and the series circuit of each switching element is connected in parallel.

ここで、スイッチング素子の直列回路の両端は入力端子で、直流電源が接続され、スイッチング素子の直列回路を構成する２つのスイッチング素子の接続点に、それぞれ出力端子が接続されている。出力端子は、３相巻線のＵ端子、Ｖ端子、Ｗ端子に接続され、スイッチング素子の直列回路を構成する２つのスイッチング素子のオン・オフの組み合せにより、Ｕ端子、Ｖ端子、Ｗ端子をそれぞれ正電圧、零電圧、解放の３状態にする。   Here, both ends of the series circuit of switching elements are input terminals, a DC power supply is connected, and output terminals are respectively connected to connection points of two switching elements constituting the series circuit of switching elements. The output terminal is connected to the U terminal, V terminal, and W terminal of the three-phase winding, and the U terminal, V terminal, and W terminal are connected by the on / off combination of two switching elements that constitute the series circuit of the switching element. The three states are positive voltage, zero voltage, and release, respectively.

スイッチング素子のオン・オフは、ホールＩＣからなる３つの位置検出手段２４ａ、２４ｂ、２４ｃからの情報に基づいて制御手段２０により制御される。位置検出手段２４ａ、２４ｂ、２４ｃは、電気角で１２０度の間隔でロータが有する永久磁石に対向するように、ステータに配設されている。   The on / off of the switching element is controlled by the control means 20 based on information from the three position detection means 24a, 24b, 24c made of Hall ICs. The position detection means 24a, 24b, and 24c are disposed on the stator so as to face the permanent magnets of the rotor at an electrical angle of 120 degrees.

ロータが１回転する間に、３つの位置検出手段２４ａ、２４ｂ、２４ｃは、それぞれ電気角で１２０度の間隔でパルスを出力する。制御手段２０は、３つの位置検出手段２４ａ、２４ｂ、２４ｃのいずれかの信号の状態が変わったときを検知し、位置検出手段２４ａ、２４ｂ、２４ｃの信号を基に、スイッチング素子２６ａ〜２６ｆのオン・オフ状態を変えていくことで、Ｕ端子、Ｖ端子、Ｗ端子を正電圧、零電圧、解放の３状態にし、ステータの第１の巻線５ａ、第２の巻線５ｂ、第３の巻線５ｃに通電して磁界を作り、ロータを回転させるよう構成されている。   During one rotation of the rotor, the three position detecting means 24a, 24b, and 24c each output a pulse at an electrical angle of 120 degrees. The control means 20 detects when the signal state of any of the three position detection means 24a, 24b, 24c changes, and based on the signals of the position detection means 24a, 24b, 24c, the switching elements 26a-26f. By changing the on / off state, the U terminal, the V terminal, and the W terminal are brought into three states of positive voltage, zero voltage, and release, and the first winding 5a, the second winding 5b, and the third winding of the stator. The coil 5c is energized to create a magnetic field and rotate the rotor.

また、スイッチング素子２６ａ、２６ｃ、２６ｅはそれぞれパルス幅変調（ＰＷＭ）制御され、例えば、繰り返し周波数１０ｋＨｚでハイ、ローの通電比を制御することで、ロータの回転数を制御するようにしてあり、制御手段２０は、３つの位置検出手段２４ａ、２４ｂ、２４ｃのいずれかの信号の状態が変わるたびにその周期を検出し、その周期よりロータの回転数を算出して、設定回転数になるようにスイッチング素子２６ａ、２６ｃ、２６ｅをＰＷＭ制御する。   The switching elements 26a, 26c, and 26e are each controlled by pulse width modulation (PWM). For example, the rotational speed of the rotor is controlled by controlling the energization ratio of high and low at a repetition frequency of 10 kHz. The control means 20 detects the cycle each time the signal state of any of the three position detection means 24a, 24b, 24c changes, calculates the rotor rotation speed from the cycle, and sets the rotation speed to the set rotation speed. The switching elements 26a, 26c, and 26e are PWM-controlled.

電流検知手段２７は、インバータ２６の一方の入力端子に接続された抵抗２８と、この抵抗２８に接続された電流検知回路２９とで構成され、インバータ２６の入力電流値を検知し、その出力電圧を制御手段２０に供給している。モータ５が直流ブラシレスモータの場合は、トルクは入力電流にほぼ比例するので、抵抗２８に接続された電流検知回路２９により、インバータ２６の入力電流値を検知することで、モータ５のトルクを検知することができる。   The current detection means 27 includes a resistor 28 connected to one input terminal of the inverter 26 and a current detection circuit 29 connected to the resistor 28. The current detection means 27 detects the input current value of the inverter 26 and outputs the output voltage. Is supplied to the control means 20. When the motor 5 is a direct current brushless motor, the torque is substantially proportional to the input current. Therefore, the torque of the motor 5 is detected by detecting the input current value of the inverter 26 by the current detection circuit 29 connected to the resistor 28. can do.

布量検知手段３０は、回転ドラム１内の洗濯物の量を検知するもので、回転ドラム１を所定回転数（例えば、２００ｒｐｍ）に立ち上げるときの電流検知手段２７からの信号により、回転ドラム１内の洗濯物の量を検知するように構成されている。   The cloth amount detecting means 30 detects the amount of laundry in the rotating drum 1, and the rotating drum 1 is detected by a signal from the current detecting means 27 when the rotating drum 1 is raised to a predetermined rotational speed (for example, 200 rpm). It is comprised so that the quantity of the laundry in 1 may be detected.

商用電源３１は、ダイオードブリッジ３２、チョークコイル３３、平滑用コンデンサ３４からなる直流電源変換装置を介して、インバータ２６に接続されている。ただし、これは一例であり、直流ブラシレスモータ５の構成、インバータ２６の構成等は、これに限定されるものではない。   The commercial power supply 31 is connected to the inverter 26 via a direct current power converter comprising a diode bridge 32, a choke coil 33, and a smoothing capacitor 34. However, this is an example, and the configuration of the DC brushless motor 5, the configuration of the inverter 26, and the like are not limited thereto.

入力設定手段２１は、図５に示すように、洗い時間を設定する洗い時間設定スイッチ２１ａ、すすぎ回数を設定するすすぎ回数設定スイッチ２１ｂ、脱水時間を設定する脱水時間設定スイッチ２１ｃ、乾燥時間を設定する乾燥時間設定スイッチ２１ｄ、スタート・一時停止スイッチ２１ｅ、電源入りスイッチ２１ｆ、電源切りスイッチ２１ｇなどを有している。また、入力設定手段２１には、第１のコース設定スイッチ２１ｈと第２のコース設定スイッチ２１ｉとを設けている。   As shown in FIG. 5, the input setting means 21 includes a washing time setting switch 21a for setting the washing time, a rinsing frequency setting switch 21b for setting the rinsing frequency, a dehydration time setting switch 21c for setting the dehydration time, and a drying time. A drying time setting switch 21d, a start / pause switch 21e, a power-on switch 21f, and a power-off switch 21g. The input setting means 21 is provided with a first course setting switch 21h and a second course setting switch 21i.

第１のコース設定スイッチ２１ｈは、運転するコースを設定するもので、洗い、すすぎ、脱水、乾燥の一連の行程を行うコースと、洗い、すすぎ、脱水の各行程を行うコースと、乾燥行程のみを行うコースとを、１回オンするごとに上記の順に切換設定できるようにしている。   The first course setting switch 21h sets a course to be driven, a course for performing a series of steps of washing, rinsing, dehydration, and drying, a course for performing steps of washing, rinsing, and dehydration, and a drying step only. The course to be performed can be switched and set in the above order each time it is turned on.

第２のコース設定スイッチ２１ｉは、おまかせコース、お急ぎコース、わたし流コース、毛布コース、槽洗浄コースなどを切換設定するもので、１回オンするごとに上記の順に切り換えられるようにしている。   The second course setting switch 21i switches and sets an automatic course, a rush course, a private course, a blanket course, a tank washing course, and the like, and is switched in the above order each time it is turned on.

表示手段２２は、洗い時間表示部２２ａ、すすぎ回数表示部２２ｂ、脱水時間表示部２２ｃ、乾燥時間表示部２２ｄ、および第２のコース設定スイッチ２１ｉで設定されるコースを表示するコース設定表示部２２ｅなどを有している。また、表示手段２２は、数字表示部２２ｈを有しており、数字表示部２２ｈの表示が、洗剤量であることを示す洗剤量表示部２２ｆと、残り時間であることを示す残り時間表示部２２ｇを有している。さらに、表示手段２２は、乾燥運転後にふんわりキープを行うことを示すふんわりキープ表示部２２ｉを有している。   The display means 22 includes a washing time display section 22a, a rinse count display section 22b, a dehydration time display section 22c, a drying time display section 22d, and a course setting display section 22e that displays the course set by the second course setting switch 21i. Etc. Moreover, the display means 22 has a number display part 22h, and the display of the number display part 22h is a detergent amount display part 22f indicating that it is a detergent amount, and a remaining time display part indicating that it is the remaining time. 22g. Furthermore, the display means 22 has a soft keep display portion 22i indicating that soft keeping is performed after the drying operation.

次に、以上のように構成された洗濯機において、回転ドラム１の内外表面および水受け槽３の内壁面に固着した異物を洗浄する槽洗浄シーケンスについて、図６のフローチャートを参照しながら説明する。   Next, in the washing machine configured as described above, a tank cleaning sequence for cleaning foreign matters fixed on the inner and outer surfaces of the rotating drum 1 and the inner wall surface of the water receiving tank 3 will be described with reference to the flowchart of FIG. .

図６において、まず、入力設定手段２１の第２のコース設定スイッチ２１ｉにより、槽洗浄コースが設定されると（ステップＳ６０１）、制御手段２０は、給水弁１４から給水経路１５を介して、回転ドラム１内へ、通常の洗濯動作時における最高水位と同等以上である設定水位（例えば、１５０ｍｍ）まで給水を行わせるとともに、洗浄剤を投入する（ステップＳ６０２）。この設定水位までの給水は、洗浄液の浸漬効果を可能な限り高めるためである。   In FIG. 6, first, when the tank cleaning course is set by the second course setting switch 21 i of the input setting means 21 (step S <b> 601), the control means 20 rotates from the water supply valve 14 via the water supply path 15. Water is supplied into the drum 1 up to a set water level (for example, 150 mm) that is equal to or higher than the maximum water level during a normal washing operation, and a cleaning agent is introduced (step S602). This is because the water supply up to this set water level is to enhance the immersion effect of the cleaning liquid as much as possible.

次に、制御手段２０は、洗浄剤を溶解させて洗浄液を作成するために、回転ドラム１を例えば３５ｒ／ｍｉｎで５分間回転させ（ステップＳ６０３）、洗浄液を回転ドラムの内表面に浸漬させるために、例えば４分間回転ドラム１の回転を停止させる（ステップＳ６０４：回転停止行程）。その後、第１の設定回転数（例えば、３５ｒ／ｍｉｎ）で回転ドラム１を設定時間（例えば、２０秒）だけ正面から見て右に回転（正転）させ（ステップＳ６０５）、次いで同じ第１の設定回転数で同じ設定時間だけ左に回転（反転）させる（ステップＳ６０６）。これらステップＳ６０５とＳ６０５が第１の洗い行程に相当する。この第１の洗い行程において、回転ドラム１の正転、反転を切り替えることで、回転ドラム１の内外表面だけでなく、その内外表面の凹凸部を左右の水流で洗浄することができる。   Next, the control means 20 rotates the rotary drum 1 for 5 minutes at 35 r / min, for example, to dissolve the cleaning agent and create a cleaning liquid (step S603), so that the cleaning liquid is immersed in the inner surface of the rotary drum. For example, the rotation of the rotary drum 1 is stopped for 4 minutes (step S604: rotation stop process). Thereafter, the rotating drum 1 is rotated to the right (forward rotation) when viewed from the front for a set time (for example, 20 seconds) at the first set rotation speed (for example, 35 r / min) (step S605), and then the same first Are rotated (inverted) to the left for the same set time at the set rotation speed (step S606). These steps S605 and S605 correspond to the first washing process. In this first washing step, by switching between normal rotation and reversal of the rotating drum 1, not only the inner and outer surfaces of the rotating drum 1, but also the uneven portions on the inner and outer surfaces can be washed with the left and right water flows.

次に、設定時間Ａ（例えば２分）が経過したか否かを判断し（ステップＳ６０７）、経過していない場合（Ｎｏ）、ステップＳ６０５とＳ６０６を繰り返し行う。これにより、回転ドラム１の正転と反転の切替タイミングで乱流が起こり、回転ドラム１の洗浄効果が高まる。ステップＳ６０７での判断の結果、設定時間Ａが経過した場合（Ｙｅｓ）、例えば回転ドラム１の正転と反転がそれぞれ３回繰り返された場合、第１の洗い行程を終了し、第２の洗い行程に進む。   Next, it is determined whether or not a set time A (for example, 2 minutes) has elapsed (step S607). If it has not elapsed (No), steps S605 and S606 are repeated. Thereby, a turbulent flow occurs at the switching timing between the normal rotation and the reverse rotation of the rotating drum 1, and the cleaning effect of the rotating drum 1 is enhanced. As a result of the determination in step S607, when the set time A has elapsed (Yes), for example, when the forward rotation and the reverse rotation of the rotating drum 1 are repeated three times, the first washing process is finished and the second washing is completed. Proceed to the process.

第２の洗い行程では、まず、第１の設定回転数よりも高くかつ回転ドラム１の外表面と水受け槽３の内壁面との間に循環流を生じせしめる回転数である第２の設定回転数（例えば、１４０ｒ／ｍｉｎ）で回転ドラム１を設定時間（例えば、３０秒）だけ正面から見て右に回転（正転）させ（ステップＳ６０８）、次いで同じ第２の設定回転数で同じ設定時間だけ左に回転（反転）させる（ステップＳ６０９）。この第２の洗い行程において、回転ドラム１の回転時による摩擦と遠心力により回転ドラム１の外表面と水受け槽３の内壁面との間に循環流が発生し、また上記した水受け槽３の溝部３００により循環流に乱流が発生し、さらに回転ドラム１の正転、反転を切り替えることで、水受け槽３の内壁面だけでなく、その内壁面の凹凸部を左右の水流で洗浄することができる。   In the second washing step, first, a second setting that is higher than the first setting rotation speed and is a rotation speed that causes a circulation flow between the outer surface of the rotating drum 1 and the inner wall surface of the water receiving tank 3. The rotating drum 1 is rotated to the right (forward rotation) when viewed from the front for a set time (for example, 30 seconds) at a rotation speed (for example, 140 r / min) (step S608), and then the same at the same second set rotation speed It is rotated (inverted) to the left for the set time (step S609). In this second washing step, a circulating flow is generated between the outer surface of the rotating drum 1 and the inner wall surface of the water receiving tank 3 due to friction and centrifugal force caused by the rotation of the rotating drum 1, and the above-described water receiving tank. The turbulent flow is generated by the three groove portions 300, and the rotating drum 1 is switched between normal rotation and reversal. Can be washed.

次に、設定時間Ｂ（例えば２分）が経過したか否かを判断し（ステップＳ６１０）、経過していない場合（Ｎｏ）、ステップＳ６０８とＳ６０９を繰り返し行う。これにより、回転ドラム１の正転と反転の切替タイミングで乱流が起こり、水受け槽３の洗浄効果が高まる。ステップＳ６１０での判断の結果、設定時間Ｂが経過した場合（Ｙｅｓ）、すなわち回転ドラム１の正転と反転がそれぞれ２回繰り返された場合、ステップＳ６１１に進み、長時間の設定時間Ｃ（例えば、１０時間）が経過したか否かを判断する。   Next, it is determined whether or not a set time B (for example, 2 minutes) has elapsed (step S610). If it has not elapsed (No), steps S608 and S609 are repeated. Thereby, a turbulent flow occurs at the switching timing between the normal rotation and the reverse rotation of the rotating drum 1, and the cleaning effect of the water receiving tank 3 is enhanced. As a result of the determination in step S610, if the set time B has elapsed (Yes), that is, if the forward rotation and the reverse rotation of the rotary drum 1 are each repeated twice, the process proceeds to step S611, where a long set time C (for example, 10 hours) is determined.

しかし、設定時間Ｃがまだ経過していない場合（Ｎｏ）、ステップＳ６０４の回転停止行程に戻り、ステップＳ６０５、Ｓ６０６、Ｓ６０７の第１の洗い行程、ステップＳ６０８、Ｓ６０９、Ｓ６１０の第２の洗い行程を繰り返し行う。このように、長時間の設定時間Ｃにわたって、第１の洗い行程、第２の洗い行程、および回転停止行程の組み合わせを長時間の設定時間にわたって繰り返し複数回行うことで、固着した洗剤カスやカビなども洗浄できる。   However, if the set time C has not yet elapsed (No), the process returns to the rotation stop process in step S604, the first wash process in steps S605, S606, and S607, and the second wash process in steps S608, S609, and S610. Repeat. In this way, the combination of the first washing process, the second washing process, and the rotation stopping process is repeated a plurality of times over a long set time over a long set time C. Can also be cleaned.

このようにして、設定時間Ｃが経過した場合（ステップＳ６１１の判断でＹｅｓ）、排水行程（ステップＳ６１２）に進み、制御手段２０は、排水経路１２および排水弁１３を介して、回転ドラム１の内外表面および水受け槽３の内壁面から剥がれた異物を含む洗浄液を排水させる。次に、回転ドラム１を脱水時の回転数（例えば、９００ｒ／ｍｉｎ）で例えば３分間回転させ（ステップＳ６１３：回転ドラムの回転行程）、次いで、ステップＳ６０２と同様に、制御手段２０は、給水弁１４から給水経路１５を介して、回転ドラム１内へ、通常の洗濯動作時における最高水位と同等以上である設定水位（例えば、１５０ｍｍ）まで給水を行わせる（ステップＳ６１４：給水行程）。   In this way, when the set time C has elapsed (Yes in the determination in step S611), the process proceeds to the drainage process (step S612), and the control means 20 passes through the drainage route 12 and the drainage valve 13 to The cleaning liquid containing the foreign matter peeled off from the inner and outer surfaces and the inner wall surface of the water receiving tank 3 is drained. Next, the rotating drum 1 is rotated, for example, for 3 minutes at a rotation speed (for example, 900 r / min) at the time of dehydration (step S613: rotation stroke of the rotating drum), and then, similarly to step S602, the control means 20 Water is supplied from the valve 14 through the water supply path 15 to the rotary drum 1 up to a set water level (for example, 150 mm) that is equal to or higher than the maximum water level during normal washing operation (step S614: water supply stroke).

次に、第２の洗い行程と同様に、第２の設定回転数（例えば、１４０ｒ／ｍｉｎ）で回転ドラム１を設定時間（例えば、３０秒）だけ正面から見て右に回転（正転）させ（ステップＳ６１５：回転ドラムの回転行程）、次いで同じ第２の設定回転数で同じ設定時間だけ左に回転（反転）させる（ステップＳ６１６：回転ドラムの回転行程）。   Next, as in the second washing step, the rotating drum 1 is rotated to the right (forward rotation) when viewed from the front for a set time (for example, 30 seconds) at the second set rotation speed (for example, 140 r / min). (Step S615: Rotating stroke of the rotating drum), and then rotated (reversed) to the left for the same set time at the same second set rotational speed (Step S616: Rotating stroke of the rotating drum).

上記の排水行程、給水行程、回転ドラムの回転行程の組み合わせによるすすぎは、設定回数（例えば、４回）だけ実施され、その設定回数が終了すると（ステップＳ６１７の判断でＹｅｓ）、排水行程（ステップ６１８）を行い、回転ドラム１の内外表面および水受け槽３の内壁面に固着した異物を洗浄する槽洗浄シーケンスが終了する。   Rinsing by a combination of the above-described drainage stroke, water supply stroke, and rotation stroke of the rotating drum is performed a set number of times (for example, four times), and when the set number of times is completed (Yes in step S617), the drainage stroke (step 618) is performed, and the tank cleaning sequence for cleaning the foreign matters fixed to the inner and outer surfaces of the rotating drum 1 and the inner wall surface of the water receiving tank 3 is completed.

このように、槽洗浄シーケンスは、入力設定手段２１の第２のコース設定スイッチ２１ｉにより使用者が槽洗浄コースを設定するだけで自動的に実施されるので、給水、洗浄、排水、すすぎを手動で設定する必要がなく、回転ドラム１および水受け槽３の洗浄行程を行うことができる。   As described above, the tank cleaning sequence is automatically executed only by the user setting the tank cleaning course by the second course setting switch 21i of the input setting means 21, so that water supply, cleaning, drainage, and rinsing are performed manually. Therefore, the cleaning process of the rotary drum 1 and the water receiving tank 3 can be performed.

なお、本実施の形態では、水受け槽３の溝部３００の形状として、側壁面３００ａが底面３００ｂに対して直角または鋭角に形成された場合について例示および説明したが、本発明はこれに限定されず、第２の設定回転数で回転ドラム１が回転する際に、回転ドラム１の外表面と水受け槽３の内壁面との間に発生する循環流に乱流を生じさせるような形状であればよい。   In the present embodiment, as the shape of the groove portion 300 of the water receiving tank 3, the case where the side wall surface 300a is formed at a right angle or an acute angle with respect to the bottom surface 300b has been illustrated and described, but the present invention is limited to this. First, when the rotating drum 1 rotates at the second set number of rotations, the circulatory flow generated between the outer surface of the rotating drum 1 and the inner wall surface of the water receiving tank 3 is turbulent. I just need it.

また、本実施の形態では、モータ５として直流ブラシレスモータを用いた場合について例示および説明したが、本発明はこれに限定されず、例えば直流ブラシモータやインダクションモータを用いて、その駆動手段および方法を変更しても、本発明を適用することができ、また本発明と同じ効果が得られる。   In the present embodiment, the case where a DC brushless motor is used as the motor 5 is illustrated and described. However, the present invention is not limited to this, and for example, a DC brush motor or an induction motor is used, and its driving means and method. Even if it changes, this invention can be applied and the same effect as this invention is acquired.

また、本実施の形態で説明したその他の構成および槽洗浄シーケンスの各行程（設定水位、設定回転数、設定時間を含めて）は単なる例示にすぎず、その修正例および変形例も、特許請求の範囲の技術思想に基づいて本発明に包含されるものである。   In addition, other configurations described in the present embodiment and each process of the tank cleaning sequence (including the set water level, the set rotation speed, and the set time) are merely examples, and modifications and variations thereof are also claimed. It is included in the present invention based on the technical idea of the range.

本発明に係る洗濯機は、略水平方向または略傾斜方向に回転中心軸を有する回転ドラムの内外表面、および水受け槽の内壁面に固着した洗剤カスやカビ等の異物の洗浄効果を十分に得ることが可能となるという利点を有し、回転ドラム式洗濯機等に有用である。   The washing machine according to the present invention has a sufficient cleaning effect on foreign matter such as detergent residue and mold fixed to the inner and outer surfaces of the rotating drum having the rotation center axis in the substantially horizontal direction or the substantially inclined direction and the inner wall surface of the water receiving tank. It has the advantage that it can be obtained, and is useful for a rotary drum type washing machine or the like.

本発明の一実施の形態に係る洗濯機の一構成例を示す断面図Sectional drawing which shows one structural example of the washing machine which concerns on one embodiment of this invention 図１の溝部３００の一構成例を示す部分断面図1 is a partial cross-sectional view showing an example of the configuration of the groove 300 in FIG. 図１の溝部３００の変形例を示す部分断面図1 is a partial cross-sectional view showing a modification of the groove 300 in FIG. 図１の制御装置１９の一構成例を示す回路図1 is a circuit diagram showing a configuration example of the control device 19 of FIG. 図１の入力設定手段２１を含む操作パネルの上面図Top view of the operation panel including the input setting means 21 of FIG. 本発明の一実施の形態に係る洗濯機の槽洗浄シーケンスにおける各行程を示すフローチャートThe flowchart which shows each process in the tank washing | cleaning sequence of the washing machine which concerns on one embodiment of this invention.

符号の説明Explanation of symbols

１ 回転ドラム
２ 通水孔
３ 水受け槽
３００ 溝部
３００ａ 溝部の側壁面
３００ｂ 溝部の底面
４ 回転軸（回転中心軸）
５ モータ
６ 突起板
７ 蓋体
８ 衣類出入口
９ 洗濯機本体
１０ ばね体
１１ ダンパー
１２ 排水経路
１３ 排水弁
１４ 給水弁（給水手段）
１５ 給水経路（給水手段）
１６ 水位検知手段
１７ 送風ファン
１８ ヒータ
１９ 制御装置
２０ 制御手段
２１ 入力設定手段
２２ 表示手段
２３ 負荷駆動手段
２４ 位置検知手段
２５ 駆動回路
２６ インバータ
２７ 電流検知手段
３０ 布量検知手段
３１ 商用電源
３２ ダイオードブリッジ
３３ チョークコイル
３４ 平滑用コンデンサ
Ｓ６０４ 回転停止行程
Ｓ６０５、Ｓ６０６、Ｓ６０７ 第１の洗い行程
Ｓ６０８、Ｓ６０９、Ｓ６１０ 第２の洗い行程
Ｓ６１２、Ｓ６１８ 排水行程
Ｓ６０２、Ｓ６１４ 給水行程
Ｓ６１３、Ｓ６１５、Ｓ６１６ 回転ドラムの回転行程

DESCRIPTION OF SYMBOLS 1 Rotating drum 2 Water flow hole 3 Water receiving tank 300 Groove part 300a Side wall surface of groove part 300b Bottom surface of groove part 4 Rotating shaft (rotation center axis)
DESCRIPTION OF SYMBOLS 5 Motor 6 Protrusion board 7 Cover body 8 Clothes entrance / exit 9 Washing machine main body 10 Spring body 11 Damper 12 Drainage path 13 Drainage valve 14 Water supply valve (water supply means)
15 Water supply route (water supply means)
DESCRIPTION OF SYMBOLS 16 Water level detection means 17 Blower fan 18 Heater 19 Control apparatus 20 Control means 21 Input setting means 22 Display means 23 Load drive means 24 Position detection means 25 Drive circuit 26 Inverter 27 Current detection means 30 Cloth amount detection means 31 Commercial power supply 32 Diode bridge 33 Choke coil 34 Capacitor for smoothing S604 Rotation stop process S605, S606, S607 First washing process S608, S609, S610 Second washing process S612, S618 Draining process S602, S614 Water supply process S613, S615, S616 Rotating drum Process

Claims (7)

洗濯物を収納し水平方向または傾斜方向に回転中心軸を有する回転ドラムと、前記回転ドラムを内包し洗濯機本体に弾性的に支持する水受け槽と、前記回転ドラムを駆動するモータと、前記水受け槽内に給水を行う給水手段と、洗濯機の動作を設定する入力設定手段と、前記入力設定手段により設定された洗濯動作の制御および前記給水手段と前記モータの制御を行う制御手段とを備えた洗濯機であって、
洗濯物が前記回転ドラムに存在しない無負荷状態で、前記制御手段は、前記給水手段を制御して設定水位まで給水させたのち、前記モータを制御して、第１の設定回転数で前記回転ドラムを回転させる第１の洗い行程と、前記第１の設定回転数よりも高くかつ前記回転ドラムの外表面と前記水受け槽の内壁面との間に循環流を生じせしめる回転数である第２の設定回転数で前記回転ドラムを回転させる第２の洗い行程と、前記回転ドラムの回転を停止させる回転停止行程との組み合わせを設定時間だけ複数回行わせることを特徴とする洗濯機。 A rotating drum for storing laundry and having a rotation center axis in a horizontal direction or an inclination direction; a water receiving tub containing the rotating drum and elastically supporting the washing machine body; a motor for driving the rotating drum; Water supply means for supplying water into the water receiving tub, input setting means for setting the operation of the washing machine, control of the washing operation set by the input setting means, and control means for controlling the water supply means and the motor A washing machine equipped with
In a no-load state where no laundry is present on the rotating drum, the control means controls the water supply means to supply water to a set water level, and then controls the motor to rotate the motor at a first set rotation speed. A first washing step for rotating the drum, and a rotation speed higher than the first set rotation speed and generating a circulation flow between the outer surface of the rotation drum and the inner wall surface of the water receiving tank. A washing machine, wherein a combination of a second washing process for rotating the rotating drum at a set rotational speed of 2 and a rotation stopping process for stopping the rotation of the rotating drum is performed a plurality of times for a set time. 前記制御手段は、前記第１の洗い行程において、前記モータを制御して、各設定時間で前記回転ドラムの正転と反転を切り替えさせる請求項１記載の洗濯機。   2. The washing machine according to claim 1, wherein the control unit controls the motor in the first washing step to switch between normal rotation and reverse rotation of the rotating drum at each set time. 前記制御手段は、前記第２の洗い行程において、前記モータを制御して、各設定時間で前記回転ドラムの正転と反転を切り替えさせる請求項１記載の洗濯機。   2. The washing machine according to claim 1, wherein the control unit controls the motor in the second washing step to switch between normal rotation and reverse rotation of the rotating drum at each set time. 前記設定水位は、洗濯物が前記回転ドラムに存在する通常の洗濯動作時における最高水位と同等以上である請求項１から３のいずれか一項記載の洗濯機。   The washing machine according to any one of claims 1 to 3, wherein the set water level is equal to or higher than a maximum water level during a normal washing operation in which laundry is present on the rotating drum. 前記制御手段は、前記第１の洗い行程、前記第２の洗い行程、および前記回転停止行程の組み合わせにより、前記回転ドラムの内外表面および前記水受け槽の内壁面の洗浄を行わせたのち、前記給水手段および前記モータを制御して、排水行程、給水行程、および前記回転ドラムの回転行程の組み合わせにより、前記回転ドラムの内外表面および前記水受け槽の内壁面のすすぎを自動的に行わせる請求項１から３のいずれか一項記載の洗濯機。   The control means performs cleaning of the inner and outer surfaces of the rotating drum and the inner wall surface of the water receiving tank by a combination of the first washing step, the second washing step, and the rotation stopping step. By controlling the water supply means and the motor, the inner and outer surfaces of the rotating drum and the inner wall surface of the water receiving tank are automatically rinsed by a combination of a draining process, a water supplying process, and a rotating process of the rotating drum. The washing machine according to any one of claims 1 to 3. 前記回転ドラムの内外表面および前記水受け槽の内壁面の洗浄およびすすぎは、前記入力設定手段の設定により行われる請求項５記載の洗濯機。   The washing machine according to claim 5, wherein cleaning and rinsing of the inner and outer surfaces of the rotating drum and the inner wall surface of the water receiving tub are performed by setting of the input setting means. 前記水受け槽は、前記回転ドラムの回転中心軸の方向で下部に形成された溝部を備えた請求項１から６のいずれか一項記載の洗濯機。

The washing machine according to any one of claims 1 to 6, wherein the water receiving tub includes a groove portion formed in a lower portion in a direction of a rotation center axis of the rotating drum.

JP2003370891A 2003-10-30 2003-10-30 Washing machine Pending JP2005131115A (en)

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