JP6964431B2 - Drum type washing machine and drum type washer / dryer - Google Patents

Drum type washing machine and drum type washer / dryer Download PDF

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JP6964431B2
JP6964431B2 JP2017082486A JP2017082486A JP6964431B2 JP 6964431 B2 JP6964431 B2 JP 6964431B2 JP 2017082486 A JP2017082486 A JP 2017082486A JP 2017082486 A JP2017082486 A JP 2017082486A JP 6964431 B2 JP6964431 B2 JP 6964431B2
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drum
dehydration
imbalance
rotation speed
rotation
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JP2018175613A (en
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優 金内
康之 上甲
知也 吉野
真理 黒澤
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Hitachi Global Life Solutions Inc
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Hitachi Global Life Solutions Inc
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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
    • D06F33/00Control of operations performed in washing machines or washer-dryers 
    • 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
    • D06F37/20Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/203Arrangements for detecting or measuring unbalance; Preventing vibrations by regulating the speed of rotation of the drum

Description

本発明は,洗濯,脱水を行うドラム式洗濯機及び洗濯,脱水及び乾燥を行うドラム式洗濯乾燥機に係る。 The present invention relates to a drum-type washing machine that performs washing and dehydration and a drum-type washer-dryer that performs washing, dehydration and drying.

ドラム式洗濯機は,筐体が水を溜める外槽を内包し,外槽が衣類を投入するドラムを内包しており,洗いと,すすぎと,脱水の各工程を行う。脱水工程の始めの低速回転数域では,ドラムの回転数を段階的に上昇させながら,衣類をドラムに張り付けていき,ドラムに張り付いた衣類のアンバランスを判定するアンバランス検出手段により,アンバランスが設定した閾値より小さいと判定された場合は,ドラムの回転数を上昇させる。アンバランスが閾値より大きいと判定された場合は,ドラムの回転を停止,または回転数を低下させ,アンバランスを修正する。なお,アンバランスは張り付け方法や衣類の素材,組み合わせに応じて大きさが変化する。 In a drum-type washing machine, the housing contains an outer tub for storing water, and the outer tub contains a drum for putting clothes in, and each process of washing, rinsing, and dehydration is performed. In the low-speed rotation speed range at the beginning of the dehydration process, clothes are attached to the drum while gradually increasing the rotation speed of the drum, and unbalance is detected by an unbalance detection means for determining the imbalance of the clothes attached to the drum. If it is determined that the balance is less than the set threshold, the number of revolutions of the drum is increased. If it is determined that the imbalance is greater than the threshold value, the drum rotation is stopped or the rotation speed is reduced to correct the imbalance. The size of the imbalance changes depending on the method of attachment, the material of the clothing, and the combination.

アンバランスの検出手段および修正の従来技術には,特許4961195号公報(特許文献1)がある。この公報には,ドラムの回転数を3段階に増加させ,第1の回転数で所定時間維持し,次に第1の回転数から第2の回転数まで上昇させ,第2の回転数で所定時間維持し,更に第2の回転数から第3の回転数まで上昇させ第3の回転数で所定時間維持する制御を行い,アンバランス検出手段よりアンバランスを検出し,第1の回転数で検出したアンバランスが第1の閾値より大きい場合は回転数を第1の回転数以下に落とし,再度第1の回転数まで上昇させアンバランスの検出を行い,第2の回転数で検出したアンバランスが第2の閾値より大きい場合は回転数を第1の回転数以下に落とし,再度第1の回転数まで上昇させアンバランスの検出を行い,第3の回転数で検出したアンバランスが第3の閾値より大きい場合は,一旦回転を止め第1の回転数より前から再開するような制御を行うと記載されている。 Japanese Patent No. 4961195 (Patent Document 1) is a conventional technique for detecting imbalance and modifying it. In this publication, the number of revolutions of the drum is increased in three stages, maintained at the first number of revolutions for a predetermined time, then increased from the first number of revolutions to the second number of revolutions, and at the second number of revolutions. It is maintained for a predetermined time, further increased from the second rotation speed to the third rotation speed, and controlled to be maintained for a predetermined time at the third rotation speed, the imbalance is detected by the imbalance detecting means, and the first rotation speed is detected. If the imbalance detected in step 1 is larger than the first threshold value, the number of revolutions is lowered to the first number of revolutions or less, the number of revolutions is increased to the first number of revolutions again to detect the imbalance, and the number of revolutions is detected at the second number of revolutions. If the imbalance is greater than the second threshold, the number of revolutions is lowered below the first number of revolutions, and the number of revolutions is increased again to the first number of revolutions to detect the imbalance. If it is larger than the third threshold value, it is described that the control is performed so that the rotation is temporarily stopped and restarted before the first rotation speed.

特許第4961195号公報Japanese Patent No. 4961195

近年は洗濯容量の大容量化で毛布の様な大物衣類を複数枚組合わせた洗濯が可能となっている。毛布を複数枚組合わせると,ドラムの容積に対して,毛布の占める容積が大きくなり,毛布がドラムの内周面に広がりにくくなる。そのため,毛布同士が重なったり,毛布の一部が重なることで,アンバランスが発生しやすい。特に素材が異なる毛布を組み合わせた場合,素材毎に含水のしやすさが異なるため,洗い工程やすすぎ工程の水を含んで湿布となった状態で,重量差が発生するため,大きなアンバランスとなりやすい。 In recent years, the washing capacity has been increased, and it has become possible to wash a combination of a plurality of large clothes such as blankets. When a plurality of blankets are combined, the volume occupied by the blanket becomes larger than the volume of the drum, and it becomes difficult for the blanket to spread on the inner peripheral surface of the drum. Therefore, imbalance is likely to occur when blankets overlap each other or a part of blankets overlap. In particular, when blankets made of different materials are combined, the ease of water content differs depending on the material, and as a result, a weight difference occurs when the compress contains water from the washing process and rinsing process, resulting in a large imbalance. Cheap.

特許文献1は,アンバランスが閾値より大きくなった場合,ドラムの回転を停止または回転数を低下させて,アンバランスを修正する。しかし,張り付ける際のアンバランスの修正方法については考慮されていないため,湿布重量に差が発生する素材が異なる毛布を組み合わせた場合,張り付ける際に,大きなアンバランスとなりやすい。大きなアンバランスが発生すると,アンバランスを修正する回数が増加することで,脱水時間と消費電力量が増加して,最悪の場合は脱水が完了しないで運転が終了する恐れがある。
素材が異なる毛布を組み合わせて,脱水工程を行う場合,ドラムに毛布が張り付く前にアンバランスを修正しながら回転数を上昇させて,ドラムに毛布を張り付けていく必要がある。
Patent Document 1 corrects the imbalance by stopping the rotation of the drum or reducing the rotation speed when the imbalance becomes larger than the threshold value. However, since the method of correcting the imbalance at the time of pasting is not considered, when blankets made of different materials that cause a difference in the weight of the compress are combined, a large imbalance is likely to occur at the time of pasting. When a large imbalance occurs, the number of times the imbalance is corrected increases, which increases the dehydration time and power consumption. In the worst case, the dehydration may not be completed and the operation may end.
When performing the dehydration process by combining blankets made of different materials, it is necessary to increase the number of rotations while correcting the imbalance before the blankets stick to the drum, and then stick the blankets to the drum.

上記課題を解決するために、本発明の洗濯機は、回転軸が水平または、奥側が下になるように傾斜した回転自在なるドラムと、該ドラムを内包すると共に洗濯水を溜める外槽と、該外槽を内包する筺体と、前記ドラム内の洗濯物の張り付き状態の判定手段と、アンバランスの判定手段と、を備え、脱水運転1回目は、前記衣類の張り付き状態の判定手段による判定とアンバランスの判定手段による判定をして、前記衣類の張り付き状態の判定手段にて検出した衣類が張り付き状態の前記ドラムの回転数を所定時間維持した状態でアンバランス判定手段による判定を行い、アンバランスが前記アンバランスの判定手段の閾値よりも大きい場合、再度脱水を開始する脱水運転2回目以降の回転制御を前記脱水運転1回目の前記洗濯物の張り付き状態の判定から設定して、前記脱水運転2回目以降は、衣類が張り付き状態の前記ドラムの回転数より低い回転数を所定時間維持した状態にてアンバランス判定手段による判定を行い、前記脱水運転1回目とは異なる回転制御をする構成とする。
In order to solve the above problems, the washing machine of the present invention includes a rotatable drum whose rotation axis is horizontal or inclined so that the back side is downward, and an outer tub that includes the drum and stores washing water. The housing including the outer tub, the means for determining the sticking state of the laundry in the drum, and the means for determining the imbalance are provided, and the first dehydration operation is determined by the means for determining the sticking state of the clothes. The unbalance determination means is used to make a determination, and the unbalance determination means is used to make a determination while the rotation speed of the drum with the clothes attached is maintained for a predetermined time. When the balance is larger than the threshold value of the unbalance determination means, the rotation control of the second and subsequent dehydration operations for starting dehydration again is set from the determination of the sticking state of the laundry in the first dehydration operation, and the dehydration is performed. After the second operation, the unbalance determination means makes a determination while maintaining the rotation speed lower than the rotation speed of the drum in the state where the clothes are stuck for a predetermined time, and the rotation control is different from that of the first dehydration operation. And.

本発明によれば,脱水工程の低速回転数域において,アンバランスを修正しながら衣類を張り付けることで,毛布の様な大物衣類や素材が異なる毛布を組み合わせた場合にアンバランスの修正時間を短くすることができ,脱水時間と消費電力量の増加を抑制するドラム式洗濯機及びドラム式洗濯乾燥機を提供することができる。 According to the present invention, in the low speed range of the dehydration process, by attaching clothes while correcting the imbalance, the correction time of the imbalance can be reduced when large clothes such as blankets or blankets made of different materials are combined. It is possible to provide a drum-type washing machine and a drum-type washer-dryer that can be shortened and suppress an increase in dehydration time and power consumption.

本発明の実施の形態例に係るドラム式洗濯機の斜視図である。It is a perspective view of the drum type washing machine which concerns on embodiment of this invention. 本発明の実施の形態例に係るドラム式洗濯機の内部構造の右側面から見た中央断面図である。It is a central sectional view seen from the right side surface of the internal structure of the drum type washing machine which concerns on embodiment of this invention. 第一の実施例における脱水工程のフローチャートである。It is a flowchart of the dehydration process in 1st Example. 第一の実施例における低速回転数域の毛布の張り付きを示す模式図である。It is a schematic diagram which shows the sticking of the blanket in the low-speed rotation speed range in the 1st Example. 第一の実施例における脱水1回目〜脱水3回目のアンバランス判定方法を示す模式図であるIt is a schematic diagram which shows the imbalance determination method of the 1st to 3rd dehydration in the 1st Example. 第二の実施例における脱水工程のフローチャートである。It is a flowchart of the dehydration process in 2nd Example.

以下,本発明を実施するための形態例について,図面を参照して説明する。なお,上下方向,左右方向,前後方向については図1に示す方向とする。 Hereinafter, examples of embodiments for carrying out the present invention will be described with reference to the drawings. The vertical direction, the horizontal direction, and the front-rear direction are the directions shown in FIG.

(実施例1)
図1は本発明におけるドラム式洗濯機100の斜視図,図2はドラム式洗濯機100の内部構造を示す側面図をそれぞれ示す。図1と図2を用いて,ドラム式洗濯機100の構成と動作を説明する。
(Example 1)
FIG. 1 is a perspective view of the drum-type washing machine 100 according to the present invention, and FIG. 2 is a side view showing the internal structure of the drum-type washing machine 100. The configuration and operation of the drum-type washing machine 100 will be described with reference to FIGS. 1 and 2.

図1に示すドラム式洗濯機100の外郭を構成する筐体1は,ベース1aの上に取付けられており,左右の側板1b(図1では右の側板のみを図示),前面カバー1c,背面カバー1d(図2参照),上面カバー1e,下部前面カバー1fで構成されている。上面カバー1eには,水道栓からのドラム式洗濯機100に給水するための給水ホース接続口30を設けている。筐体1は,ベース1aを含めて箱状の外枠を形成し,外枠として十分な強度を有している。 The housing 1 constituting the outer shell of the drum-type washing machine 100 shown in FIG. 1 is mounted on the base 1a, and has left and right side plates 1b (only the right side plate is shown in FIG. 1), a front cover 1c, and a back surface. It is composed of a cover 1d (see FIG. 2), a top cover 1e, and a lower front cover 1f. The top cover 1e is provided with a water supply hose connection port 30 for supplying water to the drum-type washing machine 100 from the water tap. The housing 1 forms a box-shaped outer frame including the base 1a, and has sufficient strength as the outer frame.

ドア2は,前面カバー1cの略中央に設けた衣類を出し入れするための投入口(図示せず)を塞ぐためのもので,前面カバー1cに設けたヒンジで開閉可能に支持されている。ドア2は,ドア開放取手2aを引くことでロック機構(図示せず)が外れて開き,ドア2を前面カバー1cに押し付けることでロックされて閉じる。前面カバー1cは,後述する外槽11(図2参照)の開口部と略同心に,衣類を出し入れするための円形の開口部を有している。 The door 2 is provided at substantially the center of the front cover 1c to close an insertion port (not shown) for taking in and out clothes, and is supported by a hinge provided on the front cover 1c so as to be openable and closable. The door 2 is opened by pulling the door opening handle 2a to disengage the lock mechanism (not shown), and is locked and closed by pressing the door 2 against the front cover 1c. The front cover 1c has a circular opening for putting in and taking out clothes substantially concentrically with the opening of the outer tank 11 (see FIG. 2) described later.

筺体1の上部には,洗剤を投入するための洗剤容器12を備える。また,筐体1の上部に設けた操作・表示パネル3は,電源スイッチ4,操作スイッチ5,表示器6を備える。操作・表示パネル3は筐体1の上部に設けた上補強部材13a(図2参照)に備えられている制御装置7(図2参照)に電気的に接続している。制御装置7には冷却ファン(図示せず)が取付けられている。ベース1aの近傍には,排水を行うための排水ホース14が取付けられている。 A detergent container 12 for charging detergent is provided on the upper part of the housing 1. Further, the operation / display panel 3 provided on the upper part of the housing 1 includes a power switch 4, an operation switch 5, and a display 6. The operation / display panel 3 is electrically connected to the control device 7 (see FIG. 2) provided in the upper reinforcing member 13a (see FIG. 2) provided on the upper part of the housing 1. A cooling fan (not shown) is attached to the control device 7. A drain hose 14 for draining water is attached in the vicinity of the base 1a.

図2に示すドラム式洗濯機100の筐体1の内部には,水を溜める外槽11が備えられる。外槽11の前方は,洗濯容量の大容量化の際に,筺体1と外槽11の空間を確保するために,テーパー部を有している。外槽11の下部は,筐体1に固定された左右一対のサスペンション26(コイルばねとダンパで構成)で防振支持されている。 An outer tub 11 for storing water is provided inside the housing 1 of the drum-type washing machine 100 shown in FIG. The front of the outer tub 11 has a tapered portion in order to secure a space between the housing 1 and the outer tub 11 when the washing capacity is increased. The lower part of the outer tank 11 is vibration-proof supported by a pair of left and right suspensions 26 (composed of a coil spring and a damper) fixed to the housing 1.

外槽11の上部は,外槽11の前後方向への倒れ込みを抑制するために,二組の懸架手段(コイルばねで構成)が接続されている。第一の懸架手段8は,外槽11の前方に備えられる外槽側前ばねホルダー10aに一端を接続して,第一の懸架手段8の他端は,前補強部材13に備えられる筐体側前ばねホルダー10に接続して構成される。 Two sets of suspending means (composed of coil springs) are connected to the upper portion of the outer tub 11 in order to prevent the outer tub 11 from falling in the front-rear direction. One end of the first suspension means 8 is connected to the outer tank side front spring holder 10a provided in front of the outer tank 11, and the other end of the first suspension means 8 is the housing side provided in the front reinforcing member 13. It is configured by connecting to the front spring holder 10.

第二の懸架手段9は,外槽側前ばねホルダー10aよりも後方に備えられた外槽側後ばねホルダー10cに一端を接続して,第二の懸架手段9の他端は,外槽側後ばねホルダー10cよりも後方且つ上方に備えられる筐体側後ばねホルダー10bに接続して構成される。 One end of the second suspension means 9 is connected to the outer tank side rear spring holder 10c provided behind the outer tank side front spring holder 10a, and the other end of the second suspension means 9 is on the outer tank side. It is configured by connecting to the housing-side rear spring holder 10b provided behind and above the rear spring holder 10c.

外槽側前ばねホルダー10a,筺体側前ばねホルダー10,外槽側後ばねホルダー10c及び筺体側後ばねホルダー10bの材料に,ポリプロピレンや繊維強化プラスチックといった強度が高い樹脂を用いることで,ばねホルダーに懸架手段から力が加わっても,ばねホルダーが強度を有しているため,ばねホルダーの破損を防止できる。 By using a high-strength resin such as polypropylene or fiber reinforced plastic as the material for the outer tank side front spring holder 10a, the housing side front spring holder 10, the outer tank side rear spring holder 10c, and the housing side rear spring holder 10b, the spring holder Even if a force is applied from the suspension means, the spring holder has strength, so that the spring holder can be prevented from being damaged.

外槽11は,衣類を収納するためのドラム21を内包する。外槽11の後方には,ドラム21を回転させるためのモータ22を備える。モータ22は,回転軸となるシャフト22aが外槽11を貫通し,ドラム21と結合している。モータ22が駆動すると,ドラム21は,正転(ドラム式洗濯機100を正面から見て時計回り),逆転(ドラム式洗濯機100を正面から見て反時計回り)の両方向に回転駆動される。図2に示すドラム21の回転軸Azは,ドラム式洗濯機100の前方から後方に向けて水平または,奥側が下になるように傾斜している(図2は奥側が下になるように傾斜している)。 The outer tank 11 includes a drum 21 for storing clothes. A motor 22 for rotating the drum 21 is provided behind the outer tank 11. In the motor 22, a shaft 22a serving as a rotation shaft penetrates the outer tank 11 and is coupled to the drum 21. When the motor 22 is driven, the drum 21 is rotationally driven in both forward rotation (clockwise when the drum type washing machine 100 is viewed from the front) and reverse rotation (counterclockwise when the drum type washing machine 100 is viewed from the front). .. The rotation axis Az of the drum 21 shown in FIG. 2 is inclined from the front to the rear of the drum type washing machine 100 so as to be horizontal or the back side is downward (FIG. 2 is inclined so that the back side is downward). doing).

ドラム21の内周面には,ドラム21内の洗濯水を外槽11に排水するための複数個の脱水孔21bや,ドラム21の周方向に間隔をおいて,ドラム21内に投入された衣類を持ち上げるための複数個(図2では1個のみを図示)のバッフル23が設けられている。バッフル23は,ドラム21の前後方向に延在している。 On the inner peripheral surface of the drum 21, a plurality of dehydration holes 21b for draining the washing water in the drum 21 to the outer tub 11 and a plurality of dehydration holes 21b are put into the drum 21 at intervals in the circumferential direction of the drum 21. A plurality of baffles 23 (only one is shown in FIG. 2) for lifting clothes are provided. The baffle 23 extends in the front-rear direction of the drum 21.

ドラム21の前端には,円筒状の流体バランサ21cが設けられている。外槽11は,前方を開口として,後方を閉じた有底の略円筒を形成している。この外槽11の開口部と筺体1の投入口は,前後方向に伸縮しやすいベローズ16により接続される。ベローズ16は,環状のパッキンである弾性体のエラストマーや合成ゴム材料で成形され,ドア2を閉めることでドラム21を水封する。また,筐体1の投入口,外槽11の開口部,ドラム21の開口部は連通しており,ドア2を開くことでドラム21内への衣類の出し入れが可能となる。なお,外槽11は,開口部を含む側と,モータ22の取り付けられる側とに分割することができる。 A cylindrical fluid balancer 21c is provided at the front end of the drum 21. The outer tank 11 forms a bottomed substantially cylinder with an opening at the front and a closure at the rear. The opening of the outer tank 11 and the inlet of the housing 1 are connected by a bellows 16 that easily expands and contracts in the front-rear direction. The bellows 16 is formed of an elastic elastomer or a synthetic rubber material which is an annular packing, and the drum 21 is water-sealed by closing the door 2. Further, the insertion port of the housing 1, the opening of the outer tank 11, and the opening of the drum 21 communicate with each other, and by opening the door 2, clothes can be taken in and out of the drum 21. The outer tank 11 can be divided into a side including an opening and a side to which the motor 22 is attached.

外槽11には,給水弁15ならびに洗剤容器12を介して給水ホース17の一端を接続している。給水弁15を開くことで,給水ホース接続口30から外槽11内に洗濯水の供給を行う。 One end of the water supply hose 17 is connected to the outer tank 11 via a water supply valve 15 and a detergent container 12. By opening the water supply valve 15, washing water is supplied into the outer tub 11 from the water supply hose connection port 30.

外槽11の下部に備えられた排水ホース14は排水経路に循環ポンプ27,糸屑フィルタ28,排水弁14aが設けてあり,排水弁14aを閉じて給水することで外槽11に洗濯水を溜め,排水弁14aを開いて外槽11内の洗濯水を機外へ排水する。 The drain hose 14 provided in the lower part of the outer tub 11 is provided with a circulation pump 27, a lint filter 28, and a drain valve 14a in the drain path. By closing the drain valve 14a and supplying water, washing water is supplied to the outer tub 11. The reservoir and the drain valve 14a are opened to drain the washing water in the outer tub 11 to the outside of the machine.

外槽11の下方には,外槽11の振動振幅を検知する振動センサ18が備えられており,振動センサ18の値が予め設定した所定値を超えると,脱水運転を停止する。 A vibration sensor 18 for detecting the vibration amplitude of the outer tank 11 is provided below the outer tank 11, and when the value of the vibration sensor 18 exceeds a predetermined value set in advance, the dehydration operation is stopped.

上記構成において,ドラム式洗濯機100の動作を説明する。電源スイッチ4を押すと,ドラム式洗濯機100が起動する。ドア開放取手2aを引いて,ドア2を開いてドラム21内に衣類を投入し,ドア2を閉じた後,操作スイッチ5を操作することで,運転を開始する。運転を開始すると,ドラム21が回転して,注水前の衣類の乾布重量を算出する。尚,モータ22の回転数と電流値に基づいて,ドラム21内の衣類の乾布重量を算出する。算出した衣類の乾布重量に基づいて,投入する洗剤量を表示器6に表示する。洗剤容器12内に所定量の洗剤量を投入後,初めに洗い工程を開始する。洗い工程において,給水弁15を開いて,給水ホース接続口30から供給した水を給水ホース17ならびに洗剤容器12を介して,洗剤と共に外槽11内に給水する。この時,循環ポンプ27内で未溶解の洗剤と水が強力に撹拌され,効率よく洗剤を溶かし,高濃度の洗剤液を生成することができる。この動作を所定時間実行した後,ドラム21が正転,停止,逆転,停止を繰り返す洗い動作を所定時間行う。このとき,衣類がバッフル23によって持ち上げられ落下する。洗い工程を行った後,脱水工程を実行する。なお,脱水工程の詳細は後述する。まず,排水弁14aを開いて,外槽11内の水が排水ホース14を介してドラム式洗濯機100の外に排水する。次に,衣類のドラム21の内周面への張り付け動作を行う。ドラム21を低速回転数(例えば50r/min)で一方向に回転させ,洗い工程で水を含んだ衣類をドラム21の回転時にバッフル23によって持ち上げ,落下する際にドラム21の内周面に広げる。次に,ドラム21の回転数を徐々に上昇させて,ドラム21の内周面に衣類を張り付かせる。衣類がドラム21の内周面に張り付くと,ドラム21の回転数をさらに上昇させて,外槽11や筐体1の共振回転数を通過しながら,ドラム21が目標回転数(例えば,900r/min)に到達する。その後,ドラム21が所定時間回転することで,衣類に含まれる水を遠心脱水する。 In the above configuration, the operation of the drum type washing machine 100 will be described. When the power switch 4 is pressed, the drum type washing machine 100 is activated. The operation is started by pulling the door opening handle 2a, opening the door 2, putting clothes into the drum 21, closing the door 2, and then operating the operation switch 5. When the operation is started, the drum 21 rotates to calculate the dry cloth weight of the clothes before water injection. The dry cloth weight of the clothes in the drum 21 is calculated based on the rotation speed and the current value of the motor 22. Based on the calculated dry cloth weight of clothes, the amount of detergent to be added is displayed on the display 6. After putting a predetermined amount of detergent into the detergent container 12, the washing process is started first. In the washing step, the water supply valve 15 is opened, and the water supplied from the water supply hose connection port 30 is supplied to the outer tank 11 together with the detergent via the water supply hose 17 and the detergent container 12. At this time, the undissolved detergent and water are vigorously agitated in the circulation pump 27, and the detergent can be efficiently dissolved to generate a high-concentration detergent solution. After executing this operation for a predetermined time, the drum 21 performs a washing operation of repeating forward rotation, stop, reverse rotation, and stop for a predetermined time. At this time, the clothes are lifted by the baffle 23 and fall. After performing the washing process, perform the dehydration process. The details of the dehydration process will be described later. First, the drain valve 14a is opened, and the water in the outer tub 11 is drained to the outside of the drum-type washing machine 100 via the drain hose 14. Next, the operation of attaching the clothes to the inner peripheral surface of the drum 21 is performed. The drum 21 is rotated in one direction at a low rotation speed (for example, 50 r / min), and clothes containing water are lifted by the baffle 23 when the drum 21 is rotated and spread on the inner peripheral surface of the drum 21 when the drum 21 is dropped. .. Next, the rotation speed of the drum 21 is gradually increased to attach clothing to the inner peripheral surface of the drum 21. When the clothing sticks to the inner peripheral surface of the drum 21, the rotation speed of the drum 21 is further increased, and the drum 21 passes through the resonance rotation speed of the outer tank 11 and the housing 1 while the drum 21 has a target rotation speed (for example, 900r /). min) is reached. After that, the drum 21 is rotated for a predetermined time to centrifuge and dehydrate the water contained in the clothes.

なお,ドラム21の内周面に張り付いた衣類が片寄ってアンバランスとなっていると,ドラム21の回転数の脈動(回転変動)や外槽11の共振回転数時に外槽11の振動振幅が大きくなる。ドラム21の回転変動や外槽11の振動振幅が閾値よりも大きい場合は,アンバランスを小さく修正するために,ドラム21の回転数を低下または停止して,ドラム21を正転と逆転を繰り返すほぐし動作や,注水を行い,衣類のアンバランスを修正する。 If the clothing attached to the inner peripheral surface of the drum 21 is offset and unbalanced, the vibration amplitude of the outer tank 11 at the time of the pulsation (rotational fluctuation) of the rotation speed of the drum 21 and the resonance rotation speed of the outer tank 11. Becomes larger. When the rotation fluctuation of the drum 21 or the vibration amplitude of the outer tank 11 is larger than the threshold value, the rotation speed of the drum 21 is reduced or stopped, and the drum 21 is repeatedly rotated forward and backward in order to correct the imbalance to be small. Correct the imbalance of clothing by loosening and injecting water.

この脱水工程を行った後,給水弁15を開いて,給水ホース接続口30から供給した水を給水ホース17ならびに洗剤容器12を介して,外槽11内に給水する。外槽11内に給水を行った後,すすぎ工程を行う。このすすぎ工程においては,前述した洗い工程と同様に,ドラム21が正転,停止,反転,停止の動作を繰り返す。このとき,バッフル23によって持ち上げられた衣類が落下する攪拌動作を繰り返す,すすぎ動作を所定時間行う。 After performing this dehydration step, the water supply valve 15 is opened, and the water supplied from the water supply hose connection port 30 is supplied into the outer tank 11 via the water supply hose 17 and the detergent container 12. After supplying water to the outer tank 11, a rinsing process is performed. In this rinsing step, the drum 21 repeats forward rotation, stop, inversion, and stop operations in the same manner as in the washing step described above. At this time, the rinsing operation is performed for a predetermined time by repeating the stirring operation in which the clothes lifted by the baffle 23 are dropped.

その後,前述した脱水工程およびすすぎ工程を所定回数繰り返し,最終脱水工程に移行する。この最終脱水工程における脱水時間は,前述の脱水工程より長く設定してある。 After that, the above-mentioned dehydration step and rinse step are repeated a predetermined number of times to shift to the final dehydration step. The dehydration time in this final dehydration step is set longer than that in the above-mentioned dehydration step.

ドラム式洗濯乾燥機は,ドラム式洗濯機100に温風ヒータ,温風ファンなどを備え(いずれも図示せず),最終脱水工程後に,洗い時よりもさらに低速で洗濯乾燥ドラムを回転させながら,温風を衣類に吹き付けて,衣類を乾燥する。 The drum-type washer-dryer is equipped with a hot-air heater, a hot-air fan, etc. in the drum-type washing machine 100 (none of them are shown), and after the final dehydration process, while rotating the washing / drying drum at a lower speed than during washing. , Blow warm air on the clothes to dry them.

次に,脱水工程の詳細を図3と図4及び図5を用いて説明する。 Next, the details of the dehydration step will be described with reference to FIGS. 3, 4 and 5.

脱水運転は外槽11の共振回転数前の低速回転数域と外槽11の共振回転数や目標回転数に向かう高速回転数域に分別できる。 The dehydration operation can be divided into a low-speed rotation speed region before the resonance rotation speed of the outer tank 11 and a high-speed rotation speed region toward the resonance rotation speed and the target rotation speed of the outer tank 11.

まず,脱水工程の始めの低速回転数域について説明する。脱水開始(200)すると,ドラム21を正転させて,衣類の片寄りや絡みを解消するほぐし動作(201)を行う。ほぐし動作(201)後は,ドラム21の回転を一旦停止(202)して,脱水回数の確認(203)を行う。脱水回数が洗い工程やすすぎ工程直後に行う脱水1回目の場合,ドラム21を逆転させながら,ドラム21の回転数を脱水開始回転数ω0(例えば50r/min)まで一定加速(例えば3r/min/s)で上昇(204)させ,毛布を持ち上げていく(図4A参照)。ω0に到達すると毛布が張り付き状態の検出を開始(205)して,毛布を広げながら(図4B参照),毛布がドラム21の内周面に張り付く(図4C参照)第1の回転数ω(例えば80r/min)まで上昇(206)させて,ω0からω1の間で毛布の張り付き状態を検出する。ω1に到達すると,張り付き状態の検出を終了(207)して,張り付き状態の回転数を検出して,アンバランスの修正回転数ω2を設定する。 First, the low-speed rotation speed range at the beginning of the dehydration process will be described. When the dehydration is started (200), the drum 21 is rotated in the normal direction to perform a loosening operation (201) for eliminating the deviation and entanglement of clothes. After the loosening operation (201), the rotation of the drum 21 is temporarily stopped (202), and the number of dehydrations is confirmed (203). In the case of the first dehydration performed immediately after the washing step or the rinsing step, the number of rotations of the drum 21 is constantly accelerated (for example, 3r / min) to the dehydration start rotation speed ω 0 (for example, 50r / min) while reversing the drum 21. Raise (204) at / s) and lift the blanket (see FIG. 4A). When ω 0 is reached, the detection of the sticking state of the blanket is started (205), and the blanket sticks to the inner peripheral surface of the drum 21 while spreading the blanket (see FIG. 4B) (see FIG. 4C). Raise it to 1 (for example, 80 r / min) (206) and detect the sticking state of the blanket between ω 0 and ω 1. When ω 1 is reached, the detection of the sticking state is finished (207), the rotation speed of the sticking state is detected, and the unbalance correction rotation speed ω 2 is set.

ωは張り付き状態を検出した回転数よりも5r/min〜10r/min低い回転数に設定することで,ドラム21の回転数を上昇させる際に,均一に張り付いた箇所を維持しながら,アンバランスとなったのみを箇所を広げることができ,アンバランスの修正を行いながら,毛布をドラム21に張り付けることができる。 By setting ω 2 to a rotation speed that is 5r / min to 10r / min lower than the rotation speed at which the sticking state is detected, when the rotation speed of the drum 21 is increased, the sticking portion is maintained evenly. Only the unbalanced part can be expanded, and the blanket can be attached to the drum 21 while correcting the unbalanced part.

ここで,張り付き状態の検出について説明する。張り付き状態の検出は,回転変動や電流,振動センサで行う。まず,回転変動による張り付き状態の検出について説明する。回転変動は,ドラム21が1回転する間の最大速度と最小速度の差から求める。ω0からωにドラム21の回転数を上昇させる際,毛布がドラム21に張り付いてない状態では,ドラム21が1回転する毎に毛布がドラム21から落下するため,ドラム21が1回転する毎にアンバランスの大きさが変化する。アンバランスの大きさが変化すると,ドラム21が1回転する毎の回転変動の大きさが変化する。ドラム21の回転数が上昇して,毛布がドラム21に張り付いた場合,毛布はドラム21が回転しても落下しなくなる。そのため,毛布がドラム21に張り付くと,毛布がドラム21に張り付く前に比べて,ドラム21が1回転する毎のアンバランスの大きさは変化しにくくなり,ドラム21が1回転する毎の回転変動も変化しにくくなる。前述した様に,回転変動はドラム21が1回転する間の最大速度と最小速度の差から求めるため,ドラム21の1回転以上する回転毎(例えば2回転毎)または時間毎(例えば2秒毎)の回転変動を比較して,回転変動の大きさの変化が小さくなった状態を毛布が張り付いた状態と判定し,その時の回転数を張り付き状態を検出した回転数とする。 Here, the detection of the sticking state will be described. The sticking state is detected by rotation fluctuation, current, and vibration sensors. First, the detection of the sticking state due to the rotation fluctuation will be described. The rotation fluctuation is obtained from the difference between the maximum speed and the minimum speed during one rotation of the drum 21. When increasing the rotation speed of the drum 21 from ω 0 to ω 1 , if the blanket is not attached to the drum 21, the blanket falls from the drum 21 every time the drum 21 rotates, so that the drum 21 rotates once. The size of the imbalance changes each time. When the magnitude of the imbalance changes, the magnitude of the rotation fluctuation changes every time the drum 21 makes one rotation. When the rotation speed of the drum 21 increases and the blanket sticks to the drum 21, the blanket does not fall even if the drum 21 rotates. Therefore, when the blanket sticks to the drum 21, the size of the imbalance for each rotation of the drum 21 is less likely to change than before the blanket sticks to the drum 21, and the rotation fluctuates for each rotation of the drum 21. Is less likely to change. As described above, since the rotation fluctuation is obtained from the difference between the maximum speed and the minimum speed during one rotation of the drum 21, every rotation (for example, every two rotations) or every time (for example, every two seconds) of one or more rotations of the drum 21. ), The state in which the change in the magnitude of the rotation fluctuation becomes small is determined to be the state in which the blanket is stuck, and the number of rotations at that time is defined as the number of times in which the sticking state is detected.

次に,電流による張り付き状態の検出方法について説明する。前述した様に毛布がドラム21に張り付いていない状態では,ドラム21が1回転する毎にアンバランスが変化するため,ドラム21を回転させるモータ22に加わる負荷が変化することで,ドラム21が1回転する毎に電流の変化が大きくなる。毛布がドラム21に張り付いた場合,ドラム21が1回転毎のアンバランスの変化は,毛布がドラム21に張り付く前に比べて小さいため,ドラム21が1回転毎の電流の変化は小さくなる。ドラム21が1回転以上する回転毎(例えば2回転毎)または時間毎(例えば2秒毎)の電流の変化を比較して,ドラム21が1回転毎の電流の変化が小さくなった状態を毛布が張り付いた状態と判定して,その時の回転数を張り付き状態を検出した回転数とする。 Next, a method for detecting a sticking state due to an electric current will be described. As described above, when the blanket is not attached to the drum 21, the imbalance changes each time the drum 21 rotates. Therefore, the load applied to the motor 22 that rotates the drum 21 changes, so that the drum 21 moves. The change in current increases with each rotation. When the blanket sticks to the drum 21, the change in imbalance for each rotation of the drum 21 is smaller than that before the blanket sticks to the drum 21, so that the change in current for each rotation of the drum 21 becomes smaller. A blanket is used to compare the changes in the current for each rotation (for example, every two rotations) or for each time (for example, every two seconds) when the drum 21 makes one or more rotations, and to make the change in the current for each rotation of the drum 21 small. It is determined that the sticking state is attached, and the rotation speed at that time is taken as the rotation speed at which the sticking state is detected.

次に,振動センサ18による張り付き状態の検出方法について説明する。振動センサで張り付き状態を検出する場合,ドラム21が回転数することで発生する周期的な振動とは異なる振動(毛布が落下する際に発生する衝撃による振動)を検出することで,張り付き状態を検出することができる。ドラム21に毛布が張り付いない状態では,ドラム21が回転する毎に毛布が落下するため,振動センサ18に落下による振動が入るが,ドラム21に毛布が張り付くと毛布は落下しなくなるため,振動センサ18に毛布の落下による振動は入らなくなる。ドラム21が1回転以上する回転数毎(例えば2回転毎)または時間毎(例えば2秒毎)の振動センサ18を比較して,振動センサ18に毛布の落下による振動が入らなくなる状態を毛布が張り付いたと判定し,その時の回転数を張り付き状態を検出した回転数とする。 Next, a method of detecting the sticking state by the vibration sensor 18 will be described. When the vibration sensor detects the sticking state, the sticking state is detected by detecting vibration different from the periodic vibration generated by the rotation speed of the drum 21 (vibration due to the impact generated when the blanket falls). Can be detected. When the blanket does not stick to the drum 21, the blanket falls each time the drum 21 rotates, so that the vibration sensor 18 receives vibration due to the fall. However, when the blanket sticks to the drum 21, the blanket does not fall and vibrates. Vibration caused by dropping the blanket does not enter the sensor 18. Comparing the vibration sensors 18 at every rotation speed (for example, every two rotations) or every time (for example, every 2 seconds) when the drum 21 makes one or more rotations, the blanket is in a state where the vibration sensor 18 does not receive vibration due to the falling of the blanket. It is determined that the sticking is performed, and the rotation speed at that time is defined as the rotation speed at which the sticking state is detected.

ドラム21の回転数がωに到達した後,ωを所定時間維持(208)して,第1のアンバランスの判定(209)を行う。第1のアンバランスの判定(209)は,ω1の維持中(208)の回転変動の大きさで行う。回転変動は,前述した様にドラム21が1回転する際の速度差から求めるため,回転変動でアンバランスを判定するためには,ドラム21を1回転させる必要がある。そのため,ωの維持時間t(208)はドラム21が1回転する時間以上とする必要があり,本実施例ではωに80r/minを与えているため,ωの維持時間t(208)は,0.75秒必要となる。より好ましくはωの維持時間t(208)を0.75秒よりも大きくすることで,アンバランスの誤判定を防ぐことができる。ωのアンバランスが第1のアンバランス判定(209)で,第1の閾値よりも小さい場合は,ドラム21の回転数を上昇(210)させて脱水を行っていく。ωのアンバランスが第1のアンバランス判定(209)で,第1の閾値よりも大きい場合は,ドラム21の回転数を停止(214)して,アンバランスの修正(リトライ)を行う。 After the rotational speed of the drum 21 has reached the omega 1, the omega 1 and a predetermined time maintaining (208), performs the determination of the first unbalanced (209). The first unbalance determination (209) is performed based on the magnitude of the rotational fluctuation during the maintenance of ω 1 (208). Since the rotation fluctuation is obtained from the speed difference when the drum 21 makes one rotation as described above, it is necessary to rotate the drum 21 once in order to determine the imbalance by the rotation fluctuation. Therefore, omega 1 of the sustain time t 1 (208) is required to be longer than the time the drum 21 rotates once, in the present embodiment has given 80 r / min to omega 1, omega 1 of the sustain time t 1 (208) requires 0.75 seconds. More preferably, by setting the maintenance time t 1 (208) of ω 1 to be larger than 0.75 seconds, it is possible to prevent erroneous determination of imbalance. If the imbalance of ω 1 is smaller than the first threshold value in the first imbalance determination (209), the rotation speed of the drum 21 is increased (210) to perform dehydration. If the imbalance of ω 1 is larger than the first threshold value in the first unbalance determination (209), the rotation speed of the drum 21 is stopped (214) and the imbalance is corrected (retry).

ωのアンバランスが第1のアンバランス判定(209)で第1の閾値よりも大きくなった場合,毛布がドラム21に均一に広がっていない状態や毛布同士が重なっているため,アンバランスが大きな状態となっているため,ドラム21の回転を停止(214)して,ドラム21に張り付いていた毛布を落下させる。ドラム21の回転を停止(214)した後,ほぐし動作(201)を行い,毛布の片寄りや絡まりを解消させることで,アンバランスの修正を行う。 When the imbalance of ω 1 becomes larger than the first threshold value in the first imbalance determination (209), the blankets are not evenly spread on the drum 21 or the blankets are overlapped with each other, resulting in an imbalance. Since it is in a large state, the rotation of the drum 21 is stopped (214), and the blanket attached to the drum 21 is dropped. After stopping the rotation of the drum 21 (214), the loosening operation (201) is performed to eliminate the offset and entanglement of the blanket, thereby correcting the imbalance.

ほぐし動作後,ドラム21の回転を一旦停止(202)して,脱水回数の確認(203)を行う。脱水1回目でリトライとなり,再度脱水を行う場合,脱水回数は2回目以降となる。脱水2回目以降は,ドラム21の回転数を脱水1回目で検出したωまで上昇(215)させて,ωをt2秒間維持(216)して,維持中に第2のアンバランス判定(217)を行う。なお,脱水2回目以降は,ωでt2秒間維持(216)するため,脱水1回目とは異なる回転制御となる。 After the loosening operation, the rotation of the drum 21 is temporarily stopped (202), and the number of dehydrations is confirmed (203). If the first dehydration is a retry and the dehydration is performed again, the number of dehydrations will be the second and subsequent times. After the second dehydration, the rotation speed of the drum 21 is increased to ω 2 detected in the first dehydration (215), and ω 2 is maintained for t 2 seconds (216), and the second imbalance is determined during the maintenance. (217) is performed. After the second dehydration, the rotation is maintained at ω 2 for t 2 seconds (216), so that the rotation control is different from that of the first dehydration.

ωは毛布がドラム21に均一に張り付いた箇所を維持したまま,アンバランスとなった箇所のみドラム21の内周面に広げて,アンバランスを修正する回転数である。図5は脱水1回目で,アンバランスが第1のアンバランス判定(209)で,第1の閾値よりも大きくなった場合の脱水2回目以降の回転制御を示す。脱水2回目は,ドラム21の回転数をωまで上昇(215)させ,ωのt2秒間維持中(216)に第2のアンバランス判定(217)を行う。アンバランスが第2の閾値を下回らなった場合,ドラム21の回転を停止(214)して,脱水3回目を行う。脱水3回目で,ωのt2秒間維持中(216)にアンバランスが第2の閾値を下回った場合,図5の脱水3回目の点線に示す様に,ドラム21の回転数を一定加速(例えば3r/min/s)で,ωまで上昇(218)させる。なお,図5の脱水3回目の実線で示す様に,ωをt2秒間維持(216)している途中で,アンバランスが第2のアンバランス判定(217)の閾値を下回った場合,t秒間を維持している途中で,ドラム21の回転数を一定で加速(例えば3r/min/s)させて,ωまで上昇(218)させも良い。 ω 2 is a rotation speed for correcting the imbalance by spreading only the unbalanced portion on the inner peripheral surface of the drum 21 while maintaining the portion where the blanket is uniformly attached to the drum 21. FIG. 5 shows the rotation control after the second dehydration when the imbalance becomes larger than the first threshold value in the first unbalance determination (209) in the first dehydration. In the second dehydration, the rotation speed of the drum 21 is increased to ω 2 (215), and the second imbalance determination (217) is performed while maintaining ω 2 for t 2 seconds (216). When the imbalance falls below the second threshold value, the rotation of the drum 21 is stopped (214) and the third dehydration is performed. When the imbalance falls below the second threshold value while maintaining t 2 seconds of ω 2 in the third dehydration (216), the rotation speed of the drum 21 is constantly accelerated as shown by the dotted line in the third dehydration in FIG. At (for example, 3r / min / s), the temperature is increased to ω 1 (218). As shown by the solid line of the third dehydration in FIG. 5, when the imbalance falls below the threshold value of the second unbalance determination (217) while the ω 2 is maintained for t 2 seconds (216). While maintaining t 2 seconds, the rotation speed of the drum 21 may be constantly accelerated (for example, 3 r / min / s) to rise to ω 1 (218).

脱水2回目以降で,ドラム21の回転数がωに到達すると,脱水1回目と同様にωをt秒間維持(208)し,維持中に第1のアンバランス判定(209)を行う。アンバランスが第1の閾値よりも小さい場合,ドラム21の回転数を上昇(210)させて脱水を行い,アンバランスが第1の閾値よりも大きい場合,ドラム21の回転を停止(214)して,リトライを繰り返す。なお,第1のアンバランス判定(209)や第2のアンバランス判定(217)のリトライする回数に上限を設定して,リトライが上限回数に達した場合,注水による毛布のアンバランスを修正しても良い。 When the rotation speed of the drum 21 reaches ω 1 after the second dehydration, ω 1 is maintained for t 1 second (208) as in the first dehydration, and the first imbalance determination (209) is performed during the maintenance. .. When the imbalance is smaller than the first threshold value, the rotation speed of the drum 21 is increased (210) to perform dehydration, and when the imbalance is larger than the first threshold value, the rotation of the drum 21 is stopped (214). And repeat the retry. An upper limit is set for the number of retries of the first unbalance judgment (209) and the second unbalance judgment (217), and when the number of retries reaches the upper limit, the blanket imbalance due to water injection is corrected. You may.

ωで判定したアンバランスが第1のアンバランス判定(209)の閾値よりも小さい場合は,ドラム21の回転数を上昇(210)させて,外槽11の共振を通過して,目標回転数に向かう高速回転数域に移行する。 When the imbalance determined by ω 1 is smaller than the threshold value of the first unbalance determination (209), the rotation speed of the drum 21 is increased (210), the resonance of the outer tank 11 is passed, and the target rotation is achieved. It shifts to the high-speed rotation speed range toward the number.

高速回転数域では,外槽11の共振を通過するため,外槽11の備えられた振動センサ18で第3のアンバランス判定(211)を行う。アンバランスが振動センサ18の第3の閾値よりも小さい場合は,ドラム21の回転数が目標回転数に到達しているか判定(212)を行い,到達している場合は,目標回転数で所定時間運転(219)して,脱水を終了(213)する。ドラム21の回転数が目標回転数まで到達していない場合は,目標回転数に到達するまで,ドラム21の回転数上昇(210)と第3のアンバランス判定(211)を繰り返す。 In the high-speed rotation speed range, since the resonance of the outer tank 11 is passed, the vibration sensor 18 provided in the outer tank 11 makes a third unbalance determination (211). If the unbalance is smaller than the third threshold value of the vibration sensor 18, it is determined whether the rotation speed of the drum 21 has reached the target rotation speed (212), and if it has reached the target rotation speed. Time operation (219) is performed, and dehydration is completed (213). If the rotation speed of the drum 21 has not reached the target rotation speed, the rotation speed increase (210) of the drum 21 and the third unbalance determination (211) are repeated until the target rotation speed is reached.

高速回転数域のアンバランスが振動センサ18の閾値よりも大きくなった場合,ドラム21の回転数を一旦停止(214)して,脱水2回目以降の回転制御で再度脱水を行う。なお,第3のアンバランス判定(211)でリトライする回数に上限を設定して,第3のアンバランス判定(211)でリトライが上限回数に達した場合,注水による毛布のアンバランスを修正しても良い。 When the imbalance in the high-speed rotation speed range becomes larger than the threshold value of the vibration sensor 18, the rotation speed of the drum 21 is temporarily stopped (214), and dehydration is performed again by the rotation control after the second dehydration. An upper limit is set for the number of retries in the third unbalance judgment (211), and when the upper limit of retries is reached in the third unbalance judgment (211), the blanket imbalance due to water injection is corrected. You may.

以上のように,脱水運転の低速回転数域で,洗い工程やすすぎ工程または最終脱水工程の脱水1回目に毛布の張り付き状態を検出(207)することで,リトライが発生した場合の脱水2回目以降で,毛布のアンバランスを修正しながらドラム21に毛布を張り付けることができるため,アンバランスの修正時間の増加を抑制することができ,脱水の運転時間の増加や消費電力量の増加を抑制することができる。なお,本実施の形態例に示す脱水1回目の張り付き状態を検出(207)して,脱水2回目以降のωを設定することで,脱水2回目以降でアンバランスを修正しながら張り付ける回転制御は,最終脱水工程で行うことで,脱水が完了しないで運転が終了することを防げる。より好ましくは洗い工程やすすぎ工程または最終脱水工程の各脱水工程毎における脱水1回目で,衣類の張り付き状態を検出(207)することで,各脱水工程でアンバランスの修正時間を抑制することができるため,運転時間の増加を抑制することができ,運転時間や消費電力量の増加を抑制できる。また,本実施の形態例に示す脱水1回目の張り付き状態(207)から,脱水2回目以降のωを設定して,アンバランスを修正しながら張り付ける回転制御は,ドラム式洗濯乾燥機にも適用できる。 As described above, by detecting the sticking state of the blanket in the first dehydration of the washing step, the rinsing step, or the final dehydration step (207) in the low speed range of the dehydration operation, the second dehydration when a retry occurs. After that, since the blanket can be attached to the drum 21 while correcting the blanket imbalance, the increase in the imbalance correction time can be suppressed, and the dehydration operation time and the power consumption can be increased. It can be suppressed. By detecting (207) the sticking state of the first dehydration shown in the example of the present embodiment and setting ω 2 after the second dehydration, the rotation of sticking while correcting the imbalance in the second and subsequent dehydrations. By performing the control in the final dehydration process, it is possible to prevent the operation from ending before the dehydration is completed. More preferably, the imbalance correction time can be suppressed in each dehydration step by detecting the sticking state of the clothes (207) in the first dehydration in each dehydration step of the washing step, the rinsing step or the final dehydration step. Therefore, it is possible to suppress an increase in operating time, and it is possible to suppress an increase in operating time and power consumption. Further, from the first dehydration sticking state (207) shown in the present embodiment, the rotation control of setting ω 2 after the second dehydration and sticking while correcting the imbalance is applied to the drum type washer / dryer. Can also be applied.

(実施例2)
次に実施例2について図6を参照して詳細に説明する。
(Example 2)
Next, the second embodiment will be described in detail with reference to FIG.

なお,ドラム式洗濯機100については,実施例1と基本的に同様な構成であるので,以下では,異なる部分について説明する。 Since the drum type washing machine 100 has basically the same configuration as that of the first embodiment, different parts will be described below.

は、第2の実施の形態例における脱水工程のフローチャートを示す。なお、第1のアンバランス判定(209)後のドラム21の回転上昇(210)までの脱水動作は、実施例1と同じであり、同一符号を付して説明を省略する。
FIG. 6 shows a flowchart of the dehydration step in the second embodiment. The dehydration operation of the drum 21 after the first imbalance determination (209) until the rotation of the drum 21 rises (210) is the same as that of the first embodiment, and the same reference numerals are given and the description thereof will be omitted.

実施例2は,高速回転数域のアンバランスが第3のアンバランス判定(211)で,振動センサ18の閾値よりも大きくなった場合,ドラム21の回転数を一旦停止(300)して,脱水1回目の張り付き状態から設定したωの設定をクリア(301)する。その後,ほぐし動作(302)を行い,ドラム21の回転を一旦停止(303)して,脱水1回目と同様に,ドラム21をω0まで一定加速(例えば3r/min/s)で上昇(204)させて,ω0に到達すると毛布が張り付き状態の検出を開始(205)して,ωまで上昇(206)させながら,ω0からω1の間で毛布の張り付き状態を検出する。ω1に到達すると,張り付き状態の検出を終了(207)して,検出した張り付き状態からアンバランスの修正回転数ω2を設定する。 In the second embodiment, when the imbalance in the high-speed rotation speed range becomes larger than the threshold value of the vibration sensor 18 in the third unbalance determination (211), the rotation speed of the drum 21 is temporarily stopped (300). Clear (301) the setting of ω 2 set from the first sticking state of dehydration. After that, the loosening operation (302) is performed, the rotation of the drum 21 is temporarily stopped (303), and the drum 21 is raised to ω 0 at a constant acceleration (for example, 3 r / min / s) (204) as in the first dehydration. ), When ω 0 is reached, the detection of the sticking state of the blanket is started (205), and the sticking state of the blanket is detected between ω 0 and ω 1 while increasing to ω 1 (206). When ω 1 is reached, the detection of the sticking state is completed (207), and the unbalance correction rotation speed ω 2 is set from the detected sticking state.

高速回転数域でリトライが発生した場合,毛布に含まれる水は低速回転数域の第1のアンバランス判定(209)や第2のアンバランス判定(217)でリトライが発生した場合に比べて多く抜ける。そのため,第3のアンバランス判定で,アンバランスが第3の閾値よりも大きくなった場合,再度ωを設定することで,毛布の水抜け具合に応じて,リトライ後のアンバランスを修正する回転数を設定できるため,アンバランスの修正時間の増加を抑制することができ,脱水の運転時間の増加や消費電力量の増加を抑制することができる。なお,実施例1と同様に,最終脱水工程の脱水1回目の張り付き状態を検出(207)して,脱水2回目以降のωを設定することで,脱水2回目以降でアンバランスを修正しながら張り付けることで,脱水が完了しないで運転が終了することを防げる。より好ましくは洗い工程やすすぎ工程または最終脱水工程の各脱水工程毎における脱水1回目で,衣類の張り付き状態を検出(207)することで,各脱水工程でアンバランスの修正時間を抑制することができるため,運転時間の増加を抑制することができ,運転時間や消費電力量の増加を抑制できる。また,本実施例の第3のアンバランス判定(211)でアンバランスが閾値よりも大きくなった場合,再度ωを設定する回転制御は,ドラム式洗濯乾燥機にも適用できる。 When a retry occurs in the high-speed rotation speed range, the water contained in the blanket is compared to the case where the retry occurs in the first unbalance judgment (209) or the second unbalance judgment (217) in the low-speed rotation speed range. Many exit. Therefore, if the imbalance becomes larger than the third threshold in the third imbalance determination, the imbalance after retry is corrected according to the degree of drainage of the blanket by setting ω 2 again. Since the number of revolutions can be set, it is possible to suppress an increase in the imbalance correction time, and it is possible to suppress an increase in the dehydration operation time and an increase in power consumption. In addition, as in Example 1, the imbalance is corrected in the second and subsequent dehydrations by detecting the sticking state of the first dehydration in the final dehydration step (207) and setting ω 2 after the second dehydration. By sticking while, it is possible to prevent the operation from ending without completing the dehydration. More preferably, the imbalance correction time can be suppressed in each dehydration step by detecting the sticking state of the clothes (207) in the first dehydration in each dehydration step of the washing step, the rinsing step or the final dehydration step. Therefore, it is possible to suppress an increase in operating time, and it is possible to suppress an increase in operating time and power consumption. Further, when the imbalance becomes larger than the threshold value in the third unbalance determination (211) of this embodiment, the rotation control for setting ω 2 again can be applied to the drum type washer / dryer.

1・・・筐体
11・・・外槽
18・・・振動センサ
21・・・ドラム
22・・・モータ
100・・・ドラム式洗濯機
205・・・張り付き状態の検出開始
207・・・張り付き状態の検出終了
209・・・第1のアンバランス判定
217・・・第2のアンバランス判定
1 ... Housing 11 ... Outer tub 18 ... Vibration sensor 21 ... Drum 22 ... Motor 100 ... Drum type washing machine 205 ... Start of detection of sticking state 207 ... Sticking State detection end 209 ... 1st imbalance determination 217 ... 2nd unbalance determination

Claims (2)

回転軸が水平または、奥側が下になるように傾斜した回転自在なるドラムと、該ドラムを内包すると共に洗濯水を溜める外槽と、該外槽を内包する筺体と、前記ドラム内の洗濯物の張り付き状態の判定手段と、アンバランスの判定手段と、を備えた洗濯機において、
脱水運転1回目は、前記衣類の張り付き状態の判定手段による判定とアンバランスの判定手段による判定をして、前記衣類の張り付き状態の判定手段にて検出した衣類が張り付き状態の前記ドラムの回転数を所定時間維持した状態でアンバランス判定手段による判定を行い、アンバランスが前記アンバランスの判定手段の閾値よりも大きい場合、再度脱水を開始する脱水運転2回目以降の回転制御を前記脱水運転1回目の前記洗濯物の張り付き状態の判定から設定して、前記脱水運転2回目以降は、衣類が張り付き状態の前記ドラムの回転数より低い回転数を所定時間維持した状態にてアンバランス判定手段による判定を行い、前記脱水運転1回目とは異なる回転制御をすることを特徴とする洗濯機。
A rotatable drum whose rotation axis is horizontal or inclined so that the back side is downward, an outer tub containing the drum and storing washing water, a housing containing the outer tub, and laundry in the drum. In a washing machine equipped with a means for determining a sticking state and a means for determining an imbalance.
In the first dehydration operation, the number of rotations of the drum in which the clothes are stuck is determined by the means for determining the sticking state of the clothes and the unbalance is determined by the means for determining the sticking state of the clothes. Is determined by the unbalance determination means while maintaining It is set from the second determination of the sticking state of the laundry, and after the second dehydration operation, the unbalance determination means is used while maintaining the rotation speed lower than the rotation speed of the drum in the sticking state for a predetermined time. A washing machine characterized in that a determination is made and rotation control different from that of the first dehydration operation is performed.
請求項1の洗濯機において、
前記脱水運転1回目のアンバランスが前記アンバランスの判定手段の閾値よりも小さい場合は、前記ドラムの回転数を上昇させることを特徴とする洗濯機。
In the washing machine of claim 1,
A washing machine characterized in that when the imbalance in the first dehydration operation is smaller than the threshold value of the imbalance determining means, the rotation speed of the drum is increased.
JP2017082486A 2017-04-19 2017-04-19 Drum type washing machine and drum type washer / dryer Active JP6964431B2 (en)

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