JP2010036016A - Drum washing machine - Google Patents

Drum washing machine Download PDF

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Publication number
JP2010036016A
JP2010036016A JP2008250131A JP2008250131A JP2010036016A JP 2010036016 A JP2010036016 A JP 2010036016A JP 2008250131 A JP2008250131 A JP 2008250131A JP 2008250131 A JP2008250131 A JP 2008250131A JP 2010036016 A JP2010036016 A JP 2010036016A
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water
washing
drum
water tank
rotating drum
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JP4877300B2 (en
Inventor
Yasuyuki Horibe
泰之 堀部
Kenji Terai
謙治 寺井
Shinji Matsuoka
真二 松岡
Takeshi Murao
剛 村尾
Masahiro Suzuki
将大 鈴木
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Panasonic Corp
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Panasonic Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum washing machine in which water in a water tub is circulated by a circulation pump without using a complex structure and the circulation water is uniformly sprayed on washing regardless of quantity and kind of washing thrown into the water tub. <P>SOLUTION: A rotary drum 4 formed into a cylinder shape bottomed is set in a water tub 3 so that the rotation axis direction is horizontal or inclined downward from the horizontal direction from an opening front side toward the back side to be a bottom part. The rotary drum 4 is driven by a motor 6 to perform at least one of a washing step and a rinsing step. A water circulation system 16 is provided to circulate the water in the water tub 3 via a water circulation passage 31 connected thereto by a circulation pump 20 with variable rotational speed. In the water circulation system 16, the circulation water is delivered from a flow passage 52 between the backside of a front end wall 3h of the water tub 3 and the surface of a front end wall 4b of the rotary drum 4 into the rotary drum 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、有底円筒形に形成された回転ドラムを、開口する正面側から底部となる背面側に向けて回転軸方向が水平または水平方向から下向き傾斜となるようにして水槽内に設置し、回転ドラムを回転駆動することにより回転ドラム内に収容した洗濯物を洗濯するドラム式洗濯機に関するものである。   In the present invention, a rotating drum formed in a bottomed cylindrical shape is installed in a water tank so that the direction of the rotation axis is horizontal or inclined downward from the horizontal direction from the front side to the open side to the back side as the bottom. The present invention relates to a drum type washing machine for washing laundry stored in a rotating drum by rotationally driving the rotating drum.

このようなドラム式洗濯機で、水槽内の水を循環ポンプで循環させる循環機能を有したものが既に知られている(例えば、特許文献1〜4参照)。   A drum-type washing machine having such a circulation function that circulates water in a water tank with a circulation pump is already known (see, for example, Patent Documents 1 to 4).

特許文献1は、1つのポンプを洗い工程やすすぎ工程では循環ポンプとして用い、すすぎ水や洗濯水を循環させ、洗い工程初期では洗剤と洗濯水の積極的な撹拌、洗剤の早期溶け込みを図り、脱水や排水工程では排水ポンプとして用いる技術を開示しており、循環経路の循環ポンプ吸水側途中にフィルタケースを設けて、吸水中の夾雑物を捕集するようにもしている。これにより循環ポンプに夾雑物が入り込まなくなる。   Patent Document 1 uses one pump as a circulation pump in the washing process and the rinsing process, circulates rinsing water and washing water, and actively stirs the detergent and the washing water at the early stage of the washing process, and aims to dissolve the detergent at an early stage. The technique used as a drainage pump is disclosed in the dehydration and drainage processes, and a filter case is provided in the middle of the circulation pump suction side of the circulation path to collect impurities in the suction water. This prevents impurities from entering the circulation pump.

特許文献2は、水槽内の水を循環ポンプで循環させることにより、洗剤がヒータ設置空間または特定空間に集まる現象を防止し、併せ、洗濯前に該当の洗濯物を迅速に加熱して洗濯効率を高められる技術を開示している。   Patent Document 2 prevents the phenomenon that detergent is gathered in a heater installation space or a specific space by circulating water in a water tank with a circulation pump, and at the same time, the laundry is quickly heated before washing, thereby washing efficiency. The technology which can improve is disclosed.

特許文献3は、循環ポンプ部と糸屑類の洗濯屑を捕獲するフィルタリング部とを備えた循環ポンプユニットを洗濯機の外箱の底部である台板に設けて、水槽内の洗濯水を循環させるのに、弾性クッションを介して台板に設け、ポンプモータの振動が台板に伝播するのを防止し、結果、ポンプモータの振動と外箱の振動とが共振することで起こる騒音を防げるようにした技術を開示している。   Patent Document 3 circulates washing water in an aquarium by providing a circulation pump unit including a circulation pump unit and a filtering unit that captures laundry waste of yarn waste on a base plate that is the bottom of an outer box of a washing machine. In order to do this, it is provided on the base plate via an elastic cushion, preventing the vibration of the pump motor from propagating to the base plate, and as a result, the noise caused by the resonance of the vibration of the pump motor and the vibration of the outer box can be prevented. Such a technique is disclosed.

特許文献4は、水槽内の水を回転ドラム内に加え、乾燥用のヒータまわりに噴射してヒータまわりに付着した糸屑類を除去できるようにした技術を開示している。
特開平11−276791号公報 特開2005−58741号公報 特開2006−223572号公報 特開2006−239142号公報
Patent Document 4 discloses a technology in which water in a water tank is added to a rotating drum and sprayed around a drying heater to remove lint attached around the heater.
Japanese Patent Application Laid-Open No. 11-276791 JP 2005-58741 A JP 2006-223572 A JP 2006-239142 A

しかし、特許文献1〜4に開示の水循環技術はいずれも、循環水を配管端から回転ドラム内に噴射するようにしているので、折角の循環水が回転ドラム内の洗濯物の局部にしか噴射できず、循環効果を生かし切れない。そこで、特許文献2、4に記載の技術は広域に噴射するのに特別な噴射ノズルを採用しているが、必要ポンプ圧の上昇も併せコスト上昇の原因になるし、限度がある。また、特許文献1、3、4に開示の技術は、水循環系の配管が水槽の前端壁部を貫通して回転ドラム内に臨む構造上、配管構造がさらに複雑になりさらなるコスト上昇の原因になる。   However, all of the water circulation techniques disclosed in Patent Documents 1 to 4 are designed to inject the circulating water from the pipe end into the rotating drum, so that the circulating water at the corner is injected only to the local area of the laundry in the rotating drum. Cannot make full use of the circulation effect. Therefore, the techniques described in Patent Documents 2 and 4 employ a special injection nozzle to inject over a wide area, but an increase in necessary pump pressure also causes an increase in cost and has a limit. In addition, the technology disclosed in Patent Documents 1, 3, and 4 causes the piping structure of the water circulation system to pass through the front end wall portion of the water tank and face the rotating drum, which further increases the cost of the piping structure. Become.

本発明の主たる目的は、複雑な構造を用いることなく、水槽内に投入される洗濯物の量や種類に関わらず循環ポンプによる循環水を満遍なく洗濯物に噴射することで、無用なコスト上昇を抑えつつ洗浄力を効果的に高めることができるドラム式洗濯機を提供することにある。   The main object of the present invention is to increase unnecessary cost by injecting the circulating water by the circulation pump evenly into the laundry regardless of the amount and type of the laundry put into the aquarium without using a complicated structure. An object of the present invention is to provide a drum-type washing machine capable of effectively increasing the cleaning power while suppressing.

上記目的を達成するために本発明に係るドラム式洗濯機は、有底円筒形に形成された回転ドラムと、前記回転ドラムを、開口する正面側から底部となる背面側に向けて回転軸方向が水平または水平方向から下向き傾斜となるようにして内部に配設する水槽と、前記回転ドラムを回転駆動するモータと、前記モータ等を制御して洗い工程、すすぎ工程の少なくとも1つを実行する制御手段と、前記水槽内の洗濯水を前記水槽に接続した循環経路を通じ、回転速度可変のモータからなる循環ポンプにより循環させる水循環系とを備え、前記水循環系は、前記水槽の前端壁裏面に設けた噴射口から噴射された洗濯水が前記水槽の前端壁裏面と前記回転ドラムの前端壁表面との間の流路を介して前記回転ドラム内に吐出されるようにし、前記循環ポンプは、回転速度可変のモータからなることを特徴としている。   In order to achieve the above object, a drum-type washing machine according to the present invention includes a rotating drum formed in a bottomed cylindrical shape, and a rotating shaft direction of the rotating drum from a front side opening to a back side serving as a bottom. At least one of a washing step and a rinsing step by controlling the motor and the like, a water tank disposed in the interior so as to be inclined downward from the horizontal or horizontal direction, a motor that rotationally drives the rotating drum, and the motor Control means and a water circulation system for circulating the wash water in the water tank through a circulation path connected to the water tank by a circulation pump consisting of a motor having a variable rotation speed, and the water circulation system is provided on the back surface of the front end wall of the water tank. Washing water sprayed from a provided spray port is discharged into the rotating drum via a flow path between the back surface of the front end wall of the water tank and the front end wall surface of the rotating drum, and the circulation pump It is characterized by comprising the rotational speed variable of the motor.

これによって、循環系がその循環ポンプおよび循環経路によって洗い工程またはおよびすすぎ工程などにて水槽内の水を吸引して水槽内に戻して循環させるのに、循環経路は水槽の前端壁に接続するだけで水槽および回転ドラムの各前端壁間で形成した流路に繋がって、この流路を通じ特別な配管なしに、前記各前端壁の内周部間で形成する環状出口から回転ドラム内に循環水を吐出させられ、また、循環水の吐出口が特別な形状、構造でなくとも、前記循環ポンプの回転速度を変えることで吐出される循環水の上下方向の角度、左右方向の広がり度合いを変えることができるので、複雑な構造を用いることなく、水槽内に投入される洗濯物の量や種類に関わらず循環ポンプによる循環水を満遍なく洗濯物に噴射することで、無用なコスト上昇を抑えつつ洗浄力を効果的に高めることができる。   As a result, the circulation path is connected to the front end wall of the aquarium so that the circulation system sucks the water in the aquarium by the circulation pump and the circulation path and circulates it back into the aquarium in the washing process and the rinsing process. Simply connect to the flow path formed between each front end wall of the water tank and the rotating drum, and circulate in the rotating drum from the annular outlet formed between the inner peripheral portions of each front end wall through this flow path without special piping. Even if the discharge port of the circulating water is not specially shaped or structured, the vertical angle of the circulating water discharged by changing the rotational speed of the circulating pump and the extent of the horizontal direction can be adjusted. Since it can be changed, the use of a circulating pump uniformly injects the circulating water into the laundry regardless of the amount and type of the laundry put into the aquarium without using a complicated structure. It can be effectively enhanced detergency while suppressing.

本発明のドラム式洗濯機によれば、循環系の循環ポンプおよび循環経路により洗い工程やすすぎ工程などで、水槽内の水を吸引して水槽内に戻して循環させて、洗いやすすぎなどの機能を高められるが、特に、循環経路が水槽の前端壁に接続するだけで水槽、回転ドラムの各前端壁間で形成する流路に繋がる特別な配管が不要でその分漏水リスクも少ない簡単かつ安価な配管構造にて、回転ドラム内に循環水を吐出させられるし、また、循環水の吐出口が特別な形状、構造でなくとも、前記循環ポンプの回転速度を変えることで吐出される循環水の上下方向の角度、左右方向の広がり度合いを変えることができるので、複雑な構造を用いることなく、水槽内に投入される洗濯物の量や種類に関わらず循環ポンプによる循環水を満遍なく洗濯物に噴射することで、無用なコスト上昇を抑えつつ洗浄力を効果的に高めることができる。   According to the drum type washing machine of the present invention, the water in the water tank is sucked back into the water tank and circulated by the circulation pump and the circulation path of the circulation system, and the water is circulated to be easy to wash. Although the function can be enhanced, it is particularly easy and simple because there is no need for special piping connected to the flow path formed between the front end walls of the water tank and the rotating drum just by connecting the circulation path to the front end wall of the water tank. Circulating water can be discharged into the rotating drum with an inexpensive piping structure, and the circulating water can be discharged by changing the rotational speed of the circulating pump, even if the outlet of the circulating water is not specially shaped and structured. Since the vertical angle of the water and the degree of spread in the horizontal direction can be changed, it is possible to wash the circulating water evenly without using a complicated structure, regardless of the amount and type of laundry put into the aquarium. object By injection, it is possible to effectively improve the cleaning power while suppressing unnecessary cost increase.

第1の発明は、有底円筒形に形成された回転ドラムと、前記回転ドラムを、開口する正面側から底部となる背面側に向けて回転軸方向が水平または水平方向から下向き傾斜となるようにして内部に配設する水槽と、前記回転ドラムを回転駆動するモータと、前記モータ等を制御して洗い工程、すすぎ工程の少なくとも1つを実行する制御手段と、前記水槽内の洗濯水を前記水槽に接続した循環経路を通じ、回転速度可変のモータからなる循環ポンプにより循環させる水循環系とを備え、前記水循環系は、前記水槽の前端壁裏面に設けた噴射口から噴射された洗濯水が前記水槽の前端壁裏面と前記回転ドラムの前端壁表面との間の流路を介して前記回転ドラム内に吐出されるようにし、前記循環ポンプは、回転速度可変のモータからなることを特徴とするドラム式洗濯機とすることにより、循環系がその循環ポンプおよび循環経路によって洗い工程またはおよびすすぎ工程などにて水槽内の水を吸引して水槽内に戻して循環させるのに、循環経路は水槽の前端壁に接続するだけで水槽および回転ドラムの各前端壁間で形成した流路に繋がって、この流路を通じ特別な配管なしに、前記各前端壁の内周部間で形成する環状出口から回転ドラム内に循環水を吐出させられ、また、循環水の吐出口が特別な形状、構造でなくとも、前記循環ポンプの回転
速度を変えることで吐出される循環水の上下方向の角度、左右方向の広がり度合いを変えることができるので、複雑な構造を用いることなく、水槽内に投入される洗濯物の量や種類に関わらず循環ポンプによる循環水を満遍なく洗濯物に噴射することで、無用なコスト上昇を抑えつつ洗浄力を効果的に高めることができる。
According to a first aspect of the present invention, there is provided a rotating drum formed in a bottomed cylindrical shape, and the rotating drum is horizontally or downwardly inclined from the horizontal direction from the front side of the opening toward the back side of the bottom. A water tank disposed inside, a motor for rotationally driving the rotary drum, control means for controlling the motor and the like to perform at least one of a washing process and a rinsing process, and washing water in the water tank. A water circulation system that is circulated by a circulation pump composed of a motor having a variable rotation speed through a circulation path connected to the water tank, and the water circulation system is configured to receive washing water sprayed from an injection port provided on the rear surface of the front end wall of the water tank. It is discharged into the rotary drum through a flow path between the back surface of the front end wall of the water tank and the front end wall surface of the rotary drum, and the circulation pump is composed of a motor having a variable rotation speed. By using the drum-type washing machine, the circulation system uses the circulation pump and circulation path to draw the water in the water tank in the washing process and the rinsing process, and return it to the water tank for circulation. The path is connected to the flow path formed between each front end wall of the water tank and the rotating drum just by connecting to the front end wall of the water tank, and is formed between the inner peripheral portions of each front end wall through this flow path without special piping. Circulating water is discharged from the annular outlet into the rotating drum, and the circulating water is discharged by changing the rotational speed of the circulating pump, even if the circulating water outlet is not specially shaped and structured. The degree of spread and the degree of spread in the left and right direction can be changed, so that circulating water from the circulation pump can be evenly sprayed onto the laundry without using a complicated structure, regardless of the amount and type of laundry put into the aquarium. By, it can be effectively enhanced detergency while suppressing unnecessary cost increase.

第2の発明は、特に、第1の発明において、回転ドラム内の洗濯物の量を検知する布量検知手段をさらに備え、前記布量検知手段により布量が少ないと判定された場合は、前記循環ポンプの回転速度を通常より低くすることを特徴とすることにより、吐出される循環水の上下への角度は小さくなり、前記回転ドラム内の下方にのみ位置する少ない衣類に集中的に循環水を供給させられる。   The second invention, in particular, in the first invention, further comprises a cloth amount detecting means for detecting the amount of laundry in the rotating drum, and when the cloth amount detecting means determines that the amount of cloth is small, By making the rotational speed of the circulation pump lower than usual, the angle of the circulating water discharged up and down becomes smaller and circulates intensively in a small number of clothes located only under the rotating drum. Water can be supplied.

第3の発明は、特に、第1の発明において、回転ドラム内の洗濯物の量を検知する布量検知手段をさらに備え、前記布量検知手段により布量が少ないと判定された場合は、前記循環ポンプのON/OFFデューティ比を通常より小さくすることを特徴とすることにより、少量の布量に十分な循環水のみを供給でき、必要以上に循環水を供給することを回避でき、泡の異常発生を防止することができる。   In a third aspect of the invention, in particular, in the first aspect of the invention, the apparatus further comprises a cloth amount detecting means for detecting the amount of laundry in the rotating drum, and when the cloth amount detecting means determines that the amount of cloth is small, By making the ON / OFF duty ratio of the circulation pump smaller than usual, it is possible to supply only sufficient circulating water for a small amount of cloth, avoid supplying unnecessary circulating water, The occurrence of abnormalities can be prevented.

第4の発明は、特に、第1の発明において、運転するコースを使用者が設定する入力手段をさらに備え、入力手段によりデリケートな衣類を洗濯するコースを設定された場合は、前記循環ポンプの回転速度を通常より低くすることを特徴とすることにより、循環ポンプから吐出される循環水の勢いによりデリケートな衣類が傷むことを防止することができる。   According to a fourth aspect of the present invention, in particular, in the first aspect of the present invention, when the user further sets input courses for setting a course to be driven and the course for washing delicate clothes is set by the input means, By making the rotational speed lower than usual, it is possible to prevent the delicate clothing from being damaged by the momentum of the circulating water discharged from the circulation pump.

第5の発明は、特に、第1の発明において、運転するコースを使用者が設定する入力手段をさらに備え、入力手段によりデリケートな衣類を洗濯するコースを設定された場合は、前記循環ポンプのON/OFFデューティ比を通常より大きくすることを特徴とすることにより、通常の洗濯コースより短い洗い工程においても、十分に衣類に循環水を供給することができる。   According to a fifth aspect of the present invention, in particular, in the first aspect of the present invention, when the user further sets input courses for setting a course to be driven and the course for washing delicate clothes is set by the input means, By making the ON / OFF duty ratio larger than usual, the circulating water can be sufficiently supplied to the clothing even in a washing process shorter than a normal washing course.

第6の発明は、特に、第1の発明において、洗い工程、すすぎ工程のうち、少なくとも一方の工程中において、前記循環ポンプの回転速度を周期的に変化させることを特徴とすることにより、回転ドラム内に存在する衣類に満遍なく循環水を供給することができる。   According to a sixth aspect of the invention, in particular, in the first aspect of the invention, the rotation speed of the circulation pump is periodically changed during at least one of the washing step and the rinsing step. Circulating water can be supplied evenly to the clothes present in the drum.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(実施の形態1)
本実施の形態1のドラム式洗濯機は、図1に示すように、洗濯機本体2の内部に揺動自在に水槽3が配設され、水槽3内には、回転ドラム4が回転自在に配設され、回転ドラム4は、水槽3の背面に外側より取り付けられたモータ6により回転駆動される。
(Embodiment 1)
As shown in FIG. 1, the drum-type washing machine according to the first embodiment has a water tank 3 disposed in a swingable manner inside a washing machine body 2, and a rotating drum 4 is rotatable in the water tank 3. The rotating drum 4 is arranged and rotated by a motor 6 attached to the back surface of the water tank 3 from the outside.

また、本実施の形態1のドラム式洗濯機は、モード設定や制御プログラムに従い、図1に示すモータ6、給水系7、排水系8、乾燥系9を自動制御して少なくとも洗い工程、すすぎ工程、脱水工程、乾燥工程を行う機能を有したいわゆるドラム式洗濯乾燥機を構成している。しかし、乾燥系9は省略することができる。   The drum type washing machine of the first embodiment automatically controls at least the washing process and the rinsing process by automatically controlling the motor 6, the water supply system 7, the drainage system 8, and the drying system 9 shown in FIG. 1 according to the mode setting and control program. A so-called drum type laundry dryer having a function of performing a dehydration process and a drying process is configured. However, the drying system 9 can be omitted.

給水系7は電磁弁(図示せず)の開閉によって実線矢印で示すように適時に給水でき、また給水を利用して洗剤収容部7aの洗剤を水槽3内に適時に投入できるようになっている。   The water supply system 7 can supply water in a timely manner as indicated by a solid arrow by opening and closing a solenoid valve (not shown), and can use the water supply to introduce the detergent in the detergent container 7a into the water tank 3 in a timely manner. Yes.

排水系8は、排水弁19の開閉によって洗い工程終了時、すすぎ工程終了時など必要なときに一点鎖線矢印で示すように、水槽3の下部に接続された排水管8aを介し、糸屑類を捕集し外部から取り外し可能の排水フィルタ8bを通過した後、排水できるようになっている。   The drainage system 8 is connected to the lower part of the water tank 3 through a drain pipe 8a connected to the lower part of the water tank 3, as shown by a one-dot chain line at the end of the washing process or the end of the rinsing process by opening and closing the drain valve 19. After being collected and passed through a drainage filter 8b that can be removed from the outside, drainage can be performed.

乾燥系9は、水槽3および回転ドラム4内の空気を送風機12によって図1の破線矢印で示すように循環させる。乾燥系9内には、糸屑類を捕集し除塵するフィルタ(図示せず)、除塵後の導入空気を除湿する除湿部(図示せず)、除湿後の空気を加熱して渇いた高温空気とする加熱部(図示せず)等を有する。   The drying system 9 circulates the air in the water tank 3 and the rotating drum 4 by the blower 12 as indicated by the broken line arrows in FIG. In the drying system 9, there are a filter (not shown) for collecting and removing dust from the lint, a dehumidifying part (not shown) for dehumidifying the introduced air after the dust removal, and a high temperature which is depleted by heating the dehumidified air. It has a heating part (not shown) etc. used as air.

また、上記に併せ、洗い準備工程時、洗い工程時、すすぎ工程時など必要に応じ、水循環系16にて水槽3内の水を循環させて洗剤の早期溶け込みや偏りの防止、洗いやすすぎの機能向上を図る機能も有している。この循環系16は、循環ポンプ20を駆動させることで、水槽3内の水を、排水管8aを介し、排水フィルタ8bを通過させ、水循環経路31の循環ポンプ20への流入側経路31a、循環ポンプ20および水循環経路31の循環ポンプ20からの吐出側経路31bを介して、水槽3内に戻すことを繰り返す。   In addition to the above, the water in the water tank 3 is circulated in the water circulation system 16 as necessary during the washing preparation process, the washing process, the rinsing process, etc., to prevent early dissolution and bias of the detergent, It also has a function to improve the function. This circulation system 16 drives the circulation pump 20 so that the water in the water tank 3 passes through the drainage filter 8b through the drainage pipe 8a, and the inflow side path 31a of the water circulation path 31 to the circulation pump 20 is circulated. It returns repeatedly in the water tank 3 via the discharge path 31b from the circulation pump 20 of the pump 20 and the water circulation path 31.

運転コース等のモードや各種機能の選択は、洗濯機本体2の前面上部に設けられる操作パネル21から入力して行い、制御系22がその入力情報を基に操作パネル21上の表示手段で表示して使用者に知らせるとともに、操作パネル21での入力設定手段により運転開始が設定されると、水槽3内の水位を検知する水位検知手段等からのデータを入力して駆動を開始して、排水弁、給水弁などの動作を制御し、洗濯、脱水、乾燥などの運転を行う。   The mode such as the driving course and various functions are selected by inputting from the operation panel 21 provided in the upper front portion of the washing machine body 2, and the control system 22 displays on the display means on the operation panel 21 based on the input information. In addition to informing the user, when the start of operation is set by the input setting means on the operation panel 21, data is input from the water level detecting means for detecting the water level in the water tank 3, and driving is started. Controls the operation of the drain valve, water supply valve, etc., and performs operations such as washing, dehydration, and drying.

回転ドラム4は回転軸4aに水槽3上のモータ5が直結されて、水槽3と共に、開口側から底部側に向けて回転軸方向を水平方向から角度θ=20±10度に傾斜させて設置し、水平方向での設置の場合に比べ、回転ドラム4を同じ高さに設置しても水槽3および回転ドラム4の開口が斜め上向きとなることで屈んだりする無理な姿勢を取らずに洗濯物を容易に出し入れできる。特に、本発明者等の経験からは傾斜角度は20±10度とすることにより、子供(幼児を除く)から大人までの身長差があっても、車椅子利用者であっても、洗濯物の出し入れの作業が最も行い易い状態が得られる。また、回転ドラム4内に給水された水が背面側に溜まって少ない水量でも深い貯水状態が得られる利点もある。水槽3は給水を効率よく回転ドラム4内の洗濯物に働かせるために、回転ドラム4と同じ傾斜を持ってその近くに沿うよう設けてある。なお、洗濯機本体2には開閉扉5が設けられ、水槽3の開口13をその口縁に装着したシール材14を介し密閉し、また開くことができるようにしている。   The rotating drum 4 is installed with the motor 5 on the water tank 3 directly connected to the rotating shaft 4a, and with the water tank 3, the rotating shaft direction is inclined from the horizontal direction to the angle θ = 20 ± 10 degrees from the opening side to the bottom side. However, even when the rotating drum 4 is installed at the same height as compared with the case of installation in the horizontal direction, washing is performed without taking an unreasonable posture where the water tank 3 and the opening of the rotating drum 4 are bent obliquely upward. You can easily put things in and out. In particular, from the experience of the present inventors, by setting the inclination angle to 20 ± 10 degrees, even if there is a height difference from children (excluding infants) to adults, even wheelchair users, It is possible to obtain a state in which the work in and out is most easily performed. Further, there is an advantage that a deep water storage state can be obtained even with a small amount of water because water supplied into the rotating drum 4 is accumulated on the back side. The water tank 3 is provided to have the same inclination as that of the rotating drum 4 and along the vicinity thereof in order to make water supply work efficiently on the laundry in the rotating drum 4. The washing machine main body 2 is provided with an opening / closing door 5 so that the opening 13 of the water tub 3 can be sealed and opened via a sealing material 14 attached to the mouth edge thereof.

なお、回転ドラム4の駆動は、脱水工程が例えば1000rpmといった高速度での連続回転にて実行される関係から、洗濯物を洗い工程、すすぎ工程での絡み、捩れ、皺より状態のまま回転ドラム4の内面に貼り付かせて癖付けしてしまうことで、洗濯物を取り出し難いし、事後処理に手間が掛かる。また、洗濯物にきつい皺が残りやすく皺取りの手間が大きい。   The rotating drum 4 is driven because the dewatering process is performed by continuous rotation at a high speed of, for example, 1000 rpm, so that the rotating drum is kept in a state of being entangled, twisted, and wrinkled in the washing process and the rinsing process. By sticking on the inner surface of 4 and brazing, it is difficult to take out the laundry, and post-processing is troublesome. In addition, it is easy to leave hard wrinkles on the laundry, and it takes a lot of time to remove the wrinkles.

これを解消するのに、本実施の形態では、洗い工程または、洗い工程およびすすぎ工程において、絡み、捩れの発生を大きく改善し機械力の働きを高めながら皺も生じ難くすることを意図して、回転ドラム4の90度を超え180度未満の急正弧回転、急逆弧回転を交互に繰り返す正逆弧回転駆動モードと、回転ドラム4の回転によって持ち上げられた洗濯物がその自重が勝る高さから落下する挙動を示す回転速度での回転ドラム4の連続回転を正逆交互に繰り返す正逆連続回転駆動モードとを備え、洗い工程または、洗い工程およびすすぎ工程において、前記正逆弧回転駆動モードと前記正逆連続回転駆動モードとを、
交互に実行するようにしている。これにより、回転ドラム4の90度を超え180度未満の急速度での弧回転および急激な制動により洗濯物を最大限90度を超えて180度未満まで持ち上げられるし、洗濯物の持ち上げの最終段階の急激な制動により制動状態が生じて洗濯物をその慣性および自重により回転ドラム4内面から剥がしてその自重によって持ち上げ側とは左右反対の側に落すことが確実に達成できるので、水を含んで十分に膨潤し、かつ緩み、滑りやすい状態にある洗濯物に対して特に高い解し作用を与えられるし、機械力を洗濯物に及ぼすことができるので洗浄性能を高めることができる。さらに、弧回転駆動の正方向の急正弧回転と逆方向の急逆弧回転とを交互に繰り返すことで正逆弧回転駆動モードとし、これによって、正逆交互の急弧回転駆動によって洗濯物の持ち上げ位置、落下位置を毎回の弧回転駆動において左右交互に入れ換えられるので、洗濯物が絡むことをより防ぎながら解し作用をさらに高められるとともに、機械力を洗濯物に及ぼす回数を増やすことができるので洗浄性能を高めることができる。また、高い解し作用により、洗い、すすぎ工程が進行することで生じる洗濯物同士の絡みが抑制できるので、正逆弧回転モードにおける効果的な叩き洗いを持続的に実行して、洗浄効果およびすすぎ効果を高めることができる。
In order to solve this problem, in the present embodiment, it is intended that the occurrence of entanglement and twist is greatly improved in the washing process or the washing process and the rinsing process, and the function of mechanical force is enhanced and the occurrence of wrinkles is less likely to occur. The forward and reverse arc rotation drive mode in which the rotating drum 4 exceeds 90 degrees and less than 180 degrees alternately in the forward and reverse arc rotation and the laundry lifted by the rotation of the rotating drum 4 wins its own weight. And a forward / reverse continuous rotation drive mode in which continuous rotation of the rotating drum 4 at a rotational speed showing a behavior of falling from a height is alternately repeated forward and backward, and the forward / reverse arc rotation in the washing step or the washing step and the rinsing step A drive mode and the forward / reverse continuous rotation drive mode,
They are executed alternately. Accordingly, the laundry is lifted up to more than 90 degrees and less than 180 degrees by the arc rotation and rapid braking of the rotating drum 4 exceeding 90 degrees and less than 180 degrees, and the final lifting of the laundry Since the braking state is caused by the sudden braking of the stage, the laundry can be reliably peeled off from the inner surface of the rotating drum 4 by its inertia and its own weight and dropped to the side opposite to the lifting side by its own weight. Therefore, it is possible to give a particularly high unraveling action to laundry that is sufficiently swollen, loose, and slippery, and can exert a mechanical force on the laundry, thereby improving the washing performance. Furthermore, the forward / reverse arc rotation drive mode is established by alternately repeating the forward / reverse rapid arc rotation in the forward direction and the reverse rotation in the reverse direction. The lifting position and falling position can be switched alternately between left and right in each arc rotation drive, so that it is possible to further improve the solving action while preventing the laundry from becoming tangled, and to increase the number of times the mechanical force is applied to the laundry As a result, the cleaning performance can be improved. In addition, because of the high unraveling action, it is possible to suppress the entanglement between the laundry caused by the progress of the washing and rinsing process. The rinsing effect can be enhanced.

また、正逆弧回転駆動モードのみでは、洗濯物の絡み、捩れ、皺より等が軽減される一方で、洗濯物の上下方向の位置が入れ替わりにくく、回転ドラム4底部の洗濯物は動きにくいため、洗いむらが生じやすいが、正逆連続回転駆動モードを併用することによって、洗濯物の上下方向の位置の入れ替わりを実現することができ、すなわち、正逆連続回転駆動モードにおける洗濯物の絡み、捩れ、皺よりを軽減するとともに、正逆弧回転駆動モードにおける洗濯物に対する機械力付与の不均衡を軽減することで、両モードによって洗濯やすすぎ中の洗濯物に異なった2通りの挙動、具体的には正逆弧回転駆動モードによっては洗濯物の絡み、捩れ、皺よりを軽減しつつしっかりした手もみ洗いの挙動を、正逆連続回転駆動モードによっては洗濯物を大きく連続に動かしむらを軽減しながら洗う、均一で強い汚れに対する効果的な洗い挙動を与えられる。   Further, in the forward / reverse arc rotation drive mode alone, the tangling, twisting, wrinkles, etc. of the laundry are reduced, but the vertical position of the laundry is difficult to change, and the laundry at the bottom of the rotating drum 4 is difficult to move. In addition, washing unevenness is likely to occur, but by using the forward / reverse continuous rotation drive mode together, it is possible to realize a change in the position of the laundry in the vertical direction, that is, the entanglement of the laundry in the forward / reverse continuous rotation drive mode, In addition to reducing twisting and wrinkling, and reducing the imbalance in applying mechanical force to the laundry in the forward / reverse arc rotation drive mode, two different behaviors for the laundry being washed and rinsed depending on both modes, Depending on the forward / reverse arc rotation drive mode, the hand-washing behavior can be improved while reducing tangling, twisting, and wrinkling of the laundry. The large wash while reducing irregularity move continuously, given an effective washing behavior for uniform and strong stain.

乾燥工程では特に、正逆弧回転駆動モードを実行すると、脱水後の洗濯物のしわ伸ばしに好適であり、仕上がり品質を各段に高めて後仕上げを大幅に軽減できる。しかし、乾燥工程の洗濯物は軽く回転ドラム4の内面に貼り付きにくい場合があるので、回転ドラム4の回転角は90°以上200°未満に設定するのが好適である。   In the drying process, the forward / reverse arc rotation drive mode is particularly suitable for the wrinkle extension of the laundry after dehydration, and the finishing quality can be greatly improved and the finishing can be greatly reduced. However, since the laundry in the drying process may be light and difficult to stick to the inner surface of the rotating drum 4, the rotation angle of the rotating drum 4 is preferably set to 90 ° or more and less than 200 °.

正逆連続駆動モードでの回転ドラム4の最高回転速度は通常通り45±5rpmとしてよく、正逆弧回転駆動モードでの回転ドラム4の最高回転速度は、洗い、すすぎ工程で40rpm以上、脱水後は50rpm以上として好適である。   The maximum rotation speed of the rotating drum 4 in the forward / reverse continuous driving mode may be 45 ± 5 rpm as usual, and the maximum rotating speed of the rotating drum 4 in the forward / reverse arc rotation driving mode is 40 rpm or more in the washing and rinsing process after dehydration. Is preferably 50 rpm or more.

ここで、循環系16について説明する。循環ポンプ20は、図1に示すように、洗濯機本体2の底部である台板2a上に固定している。具体的には、循環ポンプ20は、図2に示すように、インペラ20aを収容した樹脂製のポンプケーシング20bがその開口側で、循環モータ20cの金属製のモータケーシング20dの前端にある軸受隔壁20d1に当てがって一体化し、インペラ20aをモータ軸20eに直結したものとしてあり、これを樹脂製の取り付け座35に嵌め付けてある。取り付け座35はその周辺3か所にほぼC型の取り付け片35aを有し、これら取り付け片35aを台板2a上のボス部(図示せず)にボルト(図示せず)をねじ込むことにより取り付けている。   Here, the circulation system 16 will be described. As shown in FIG. 1, the circulation pump 20 is fixed on a base plate 2 a that is the bottom of the washing machine body 2. Specifically, as shown in FIG. 2, the circulating pump 20 has a bearing partition wall in which a resin-made pump casing 20b that houses an impeller 20a is on the opening side and at the front end of a metallic motor casing 20d of the circulating motor 20c. The impeller 20a is integrated with the motor shaft 20e, and the impeller 20a is directly connected to the motor shaft 20e. The mounting seat 35 has substantially C-shaped mounting pieces 35a at three places around the mounting seat 35, and these mounting pieces 35a are attached by screwing bolts (not shown) into bosses (not shown) on the base plate 2a. ing.

また、水循環経路31の吐出側経路31bは図1および図3に示すように、水槽3の開口13まわりの前端壁3hの最下部に設けた図3に示す噴射口51に外面から接続して、図1の矢印aのように、水槽3の前端壁3hの裏面とこれに対応する回転ドラム4の前端壁4bの表面との間に吐出側経路31bからの洗濯水を噴射し、それらの間で形成する流路52を通じて回転ドラム4内に吐出するようにしてある。このときの循環ポンプ20の
モータ回転速度は、例えば3500rpm程度に設定している。これにより、吐出側経路31bからの水の噴射口51が回転ドラム4内の洗濯物と接触しない位置にあるので、洗濯物が引っ掛かって洗濯やすすぎ、乾燥などに必要な挙動を乱したり、あるいは洗濯物を傷めたり、破れたりするようなことを防止することができるし、見栄えのよい外観が損なわれない。併せ、流路52は水槽3および回転ドラム4の前端壁3h、4b間で形成しているため、特別な部品が不要でシール部材56を用いる程度の構造が簡単かつ安価で水漏れのリスクが低減する。
1 and 3, the discharge side path 31b of the water circulation path 31 is connected to the injection port 51 shown in FIG. 3 provided at the lowermost part of the front end wall 3h around the opening 13 of the water tank 3 from the outer surface. 1, washing water from the discharge side passage 31b is injected between the back surface of the front end wall 3h of the water tank 3 and the front surface of the front end wall 4b of the rotating drum 4 corresponding to the front side wall 3h. The ink is discharged into the rotary drum 4 through a flow path 52 formed therebetween. At this time, the motor rotation speed of the circulation pump 20 is set to about 3500 rpm, for example. Thereby, since the water injection port 51 from the discharge side path 31b is in a position where it does not come into contact with the laundry in the rotary drum 4, the laundry is caught and washed too easily, disturbing the behavior necessary for drying, Alternatively, the laundry can be prevented from being damaged or torn, and the appearance is not impaired. In addition, since the flow path 52 is formed between the water tank 3 and the front end walls 3h and 4b of the rotating drum 4, no special parts are required, the structure using the seal member 56 is simple and inexpensive, and there is a risk of water leakage. To reduce.

しかも噴射口51は、水槽3の前端壁3hの裏面において図3(c)に示すように回転ドラム4の回転中心方向、具体的には、水槽3および回転ドラム4の前端壁3h、4b間の流路52における環状出口53に向かって開口しているので、噴射口51から噴射する洗濯水は流路52を回転ドラム4の回転中心側、具体的には環状出口53に向かって径方向に回転ドラム4の内側回転域に効率よく吐出させられ、洗濯物の多少にかかわらず洗濯水を効率よく供与できる。特に、水槽3の前端壁3hは噴射口51に対応する位置から内周近くに向かって洗濯機本体2の後部側に傾斜した傾斜面3h1およびこの傾斜面3h1から内周まで、回転ドラム4の開口54側に向け湾曲した湾曲面3h2を有していることにより、流路52に噴射される洗濯水を図3(c)に示すように、傾斜面3h1から湾曲面3h2に沿わせて、回転ドラム4の開口54を通じ回転ドラム4の奥側に向け吐出させられるので、洗濯水の洗濯物への供与効率を高められる。   Moreover, the injection port 51 is formed on the back surface of the front end wall 3h of the water tank 3 as shown in FIG. 3C, specifically, between the front end walls 3h and 4b of the water tank 3 and the rotary drum 4 as shown in FIG. Since the washing water sprayed from the injection port 51 passes through the passage 52 in the rotational center side of the rotary drum 4, specifically toward the annular outlet 53, Thus, the water can be efficiently discharged into the inner rotation area of the rotary drum 4, and the washing water can be efficiently supplied regardless of the amount of the laundry. In particular, the front end wall 3h of the water tank 3 has an inclined surface 3h1 inclined toward the rear side of the washing machine body 2 from a position corresponding to the injection port 51 toward the inner periphery, and from the inclined surface 3h1 to the inner periphery of the rotating drum 4. By having the curved surface 3h2 curved toward the opening 54 side, as shown in FIG. 3 (c), the washing water sprayed to the flow path 52 extends from the inclined surface 3h1 to the curved surface 3h2. Since it is discharged toward the inner side of the rotating drum 4 through the opening 54 of the rotating drum 4, the efficiency of supplying washing water to the laundry can be increased.

ここで、水循環系16の構造としては、水槽3の前端壁3hの吐出側経路31bが接続される接続口51aから洗濯水を流路52に噴射させる噴射口51は、流路52へ回転ドラム4の回転中心側に向け周方向の所定範囲で開口したものとしている。このように、水槽3の前端壁3hに接続口51aを設けるのに、流路52に向いて開口する噴射口51を形成することで、吐出側経路31bからの洗濯水を、噴射51口を通じ流路52側に乱れなく案内して、回転ドラム4内に環状出口53の噴射口51の周方向域に対応した所定域から所定の方向に左右への広がりを伴い安定して吐出させられる。結果、水槽3の前端壁3hの吐出側経路31bを接続する接続口51aから流入する洗濯水を、接続口51aに併せ設けられて流路52に向き開口する噴射口51により、噴射口51の周方向域に対応した開口を通じ流路52側に乱れなく案内して、環状出口53の噴射口51に対応する周方向の所定域から所定の方向に左右への広がりを伴い安定して吐出させて、回転ドラム4内の洗濯物にその多少にかかわらず有効に働かせさられる。   Here, as the structure of the water circulation system 16, the injection port 51 for injecting the washing water into the flow channel 52 from the connection port 51 a to which the discharge side channel 31 b of the front end wall 3 h of the water tank 3 is connected is connected to the flow channel 52 by a rotating drum. It is assumed that an opening is made in a predetermined range in the circumferential direction toward the rotation center side of No. 4. Thus, in order to provide the connection port 51 a in the front end wall 3 h of the water tank 3, by forming the injection port 51 that opens toward the flow path 52, the washing water from the discharge side passage 31 b is passed through the injection 51 port. Guided without disturbance to the flow path 52 side, it is stably discharged into the rotating drum 4 from the predetermined area corresponding to the circumferential direction area of the injection port 51 of the annular outlet 53 to the left and right in a predetermined direction. As a result, the washing water flowing in from the connection port 51 a that connects the discharge side path 31 b of the front end wall 3 h of the water tank 3 is also provided in the connection port 51 a and is opened toward the flow path 52, thereby the injection port 51. It guides without disturbance to the flow path 52 side through the opening corresponding to the circumferential direction area, and discharges from the circumferential predetermined area corresponding to the injection port 51 of the annular outlet 53 to the left and right in a predetermined direction with stable discharge. Thus, the laundry in the rotating drum 4 is effectively used regardless of the amount of the laundry.

また、噴射口51は、接続口51aに接続される吐出側経路31bの接続端部55eとの間で、洗濯水を流路52への開口部に案内するようにしている。これにより、吐出側経路31bが接続される接続口51aに設けた噴射口51が洗濯水を前記流路の側に案内するのに、吐出側経路31bの接続口51aへの接続端部と協働した相互の簡単形状での合わせ形態にて、好適な案内条件を満足できる。結果、接続口51aに設けた噴射口51により流入する洗濯水を流路52の側に案内するのに、吐出側経路31bの接続口51aへの接続端部55eとの簡単形状での合わせ形態により、周方向に大きな吐出流幅、前後方向に十分な吐出流厚み、着水距離を大きくできる吐出流速度など、洗濯物の多少にかかわらず好適に働く条件を満足する案内ができ、しかも、配管構造は特に複雑化せず漏水リスクの増大がなく、コスト上昇の原因にもならない。結果、接続口51aに続いて設けた噴射口51により流入する洗濯水を流52路の側に案内するのに、吐出側経路31bの接続口51aへの接続端部55eとの簡単形状での合わせ形態により、周方向に大きな吐出流幅、前後方向に十分な吐出流厚み、着水距離を大きくできる吐出流速度など、洗濯物の多少にかかわらず好適に働く条件を満足する案内ができ、しかも、配管構造は特に複雑化せず漏水リスクの増大がなく、コスト上昇の原因にもならない。   Further, the ejection port 51 is configured to guide the washing water to the opening to the flow path 52 between the ejection port 51 and the connection end 55e of the discharge side path 31b connected to the connection port 51a. As a result, the ejection port 51 provided in the connection port 51a to which the discharge side path 31b is connected guides the washing water to the flow path side, and cooperates with the connection end portion of the discharge side path 31b to the connection port 51a. Suitable guiding conditions can be satisfied by the combined form of the worked simple shapes. As a result, in order to guide the washing water flowing in by the injection port 51 provided in the connection port 51a to the flow channel 52 side, the form of matching with the connection end portion 55e of the discharge side path 31b to the connection port 51a in a simple shape With this, it is possible to provide guidance that satisfies conditions that work well regardless of the amount of laundry, such as a large discharge flow width in the circumferential direction, a sufficient discharge flow thickness in the front-rear direction, and a discharge flow speed that can increase the landing distance, The piping structure is not particularly complicated, does not increase the risk of water leakage, and does not increase costs. As a result, in order to guide the wash water flowing in by the injection port 51 provided subsequent to the connection port 51a to the flow 52 path side, in a simple shape with the connection end part 55e to the connection port 51a of the discharge side path 31b. Depending on the form of alignment, a large discharge flow width in the circumferential direction, a sufficient discharge flow thickness in the front-rear direction, a discharge flow speed that can increase the landing distance, etc. Moreover, the piping structure is not particularly complicated, does not increase the risk of water leakage, and does not cause an increase in cost.

また、噴射口51は、図3(a)に示すように水槽3の前端壁3hの底部のほぼ中心位
置に開口し、この噴射口51と吐出側経路31bとを図3に示す樹脂製のダクト55部によって接続してある。このダクト55は前後部材55a、55b二枚合せにして前後に扁平に形成してある。吐出側経路31bは噴射口51の開口位置に対し左右方向一方に偏って循環ポンプ20から水槽3の軸線とほぼ平行に前方へ延び、ダクト55はパイプ状の吐出側経路31bの前端と噴射口51とを後部材55b一端に一体形成した接続パイプ55cで吐出側経路31bにその延長部として接続され、この一端側から噴射口51の下方近くにまでほぼ水平に延びた後、他端側が噴射口51まで湾曲して立ち上がり、図3(c)に示すように立ち上がり部55dの後部材55bに一体成形した接続端部55eによって噴射口51の水槽3の前端壁3hに開口する接続口51aにシール部材56を介し接続しねじ57でねじ止めし固定してある。このように、水槽3の前端壁3hの接続口51aとの接続端部55eから水槽3の外周へ張り出し循環ポンプ20側に接続されるダクト55部を前後に扁平なものとしてあると、水槽3の前端壁3hと洗濯機本体2の前面壁との間に小さなスペースで配管できる。しかも、ダクト55の扁平形状によって洗濯水に噴射口51の開口などに見合う水流幅、水流厚みに整流して、接続口51aから噴射口51に向かわせ流路52に噴射されるようにし、環状出口53からの大きな周方向吐出幅、前後方向に十分な吐出厚み、着水距離を大きくできる吐出速度域を、流れに乱れなく満足することができ、洗濯、すすぎ効果をさらに高められる。また、ダクト55部が、水槽3の外周から前端壁3h下部の噴射口51の接続口51a近くの下まで横方向に延び、そこから接続口51aまでの湾曲した立ち上がり部にて接続口51aに接続されているため、扁平流に整流した洗濯水を立ち上がり部の湾曲形状にて乱すことなく接続口51a、および扁平方向が一致した噴射口51に導き、流路52の周方向所定域に噴射させるので、環状出口53のより広域からより安定して吐出させられ、洗濯水の洗濯物への働きを高められる。
Further, as shown in FIG. 3 (a), the injection port 51 opens at substantially the center position of the bottom of the front end wall 3h of the water tank 3, and the injection port 51 and the discharge side path 31b are made of resin as shown in FIG. The duct 55 is connected. The duct 55 is formed flat in the front-rear direction by combining the front and rear members 55a, 55b. The discharge-side path 31b is biased to one side in the left-right direction with respect to the opening position of the injection port 51, and extends forward from the circulation pump 20 substantially parallel to the axis of the water tank 3, and the duct 55 is connected to the front end of the pipe-shaped discharge-side path 31b and the injection port. 51 is connected to the discharge side passage 31b as an extension by a connection pipe 55c integrally formed at one end of the rear member 55b. After extending substantially horizontally from the one end side to near the lower portion of the injection port 51, the other end side is injected. As shown in FIG. 3 (c), the connection port 51 a that opens to the front end wall 3 h of the water tank 3 of the injection port 51 is formed by a connection end portion 55 e that is integrally formed with the rear member 55 b of the rising portion 55 d as shown in FIG. It is connected via a seal member 56 and fixed with screws 57. Thus, when the duct 55 portion that projects from the connection end portion 55e of the front end wall 3h of the water tank 3 with the connection port 51a to the outer periphery of the water tank 3 and is connected to the circulation pump 20 side is flattened back and forth, The front end wall 3h and the front wall of the washing machine body 2 can be piped in a small space. In addition, the flat shape of the duct 55 rectifies the washing water into a water flow width and a water flow thickness that match the opening of the injection port 51 and the like, and the water is injected from the connection port 51a toward the injection port 51 into the flow channel 52. A large circumferential discharge width from the outlet 53, a sufficient discharge thickness in the front-rear direction, and a discharge speed range that can increase the landing distance can be satisfied without being disturbed by the flow, and the washing and rinsing effects can be further enhanced. Further, the duct 55 part extends in the lateral direction from the outer periphery of the water tank 3 to the vicinity of the connection port 51a of the injection port 51 at the lower part of the front end wall 3h, and from there to the connection port 51a at a curved rising portion to the connection port 51a. Since it is connected, the washing water rectified into a flat flow is led to the connection port 51a and the injection port 51 whose flat directions coincide with each other without being disturbed by the curved shape of the rising portion, and injected into a predetermined circumferential region of the flow path 52 Therefore, the discharge is more stably discharged from a wider area of the annular outlet 53, and the function of the washing water on the laundry can be enhanced.

特に、噴射口51は、水槽3の前端壁3hに開口する接続口51aからこれに平行で回転ドラム4の前端壁4b側に寄って一体形成された受け止め壁51cによって、接続口51aの口縁上部との間で環状出口53に向け開口するように形成され、接続端部55eは受け止め壁51cとの間で、噴射口51に向け噴射通路をダクト55側からアール面にて滑らかに絞る絞り壁55fを備え、ダクト55から噴射口51に向かう洗濯水を加勢し、水槽3の前端壁3hの裏面の傾斜面3h1および湾曲面3h2に強く沿わせた高速流とするので、回転ドラム4内へ上方斜め後方に所定の経路で確実に吐出し左右に広がりながら放物線を描くより長い飛翔経路にて回転ドラム4内の洗濯物により広域から供与できるようになる。しかし、前記高速流とするための絞り通路はダクト55の接続口51aへの接続端部と噴射口51との間でどのように形成されてもよい。つまり、接続口51aに設けた噴射口51により流入する洗濯水を流路52の側に案内するのに、吐出側経路51bの接続口51aへの接続端部55との簡単形状での合わせ形態により、周方向に大きな吐出流幅、前後方向に十分な吐出流厚み、着水距離を大きくできる吐出流速度など、洗濯物の多少にかかわらず好適に働く条件を満足する案内ができ、しかも、配管構造は特に複雑化せず漏水リスクの増大がなく、コスト上昇の原因にもならない。   In particular, the injection port 51 is connected to the front end wall 4h of the rotating drum 4 in parallel with the connection port 51a that opens from the front end wall 3h of the water tank 3 and is formed integrally with the receiving wall 51c. It is formed so as to open toward the annular outlet 53 between the upper part and the connection end 55e between the receiving wall 51c and the throttle that smoothly squeezes the injection passage toward the injection port 51 from the duct 55 side on the rounded surface. Since the wall 55f is provided and the washing water directed from the duct 55 toward the injection port 51 is energized, a high-speed flow is provided along the inclined surface 3h1 and the curved surface 3h2 on the back surface of the front end wall 3h of the water tank 3, The laundry can be provided from a wide area by the laundry in the rotating drum 4 through a longer flight path that draws a parabola while being surely discharged obliquely upward and backward in a predetermined path and spreading left and right. However, the throttle passage for the high-speed flow may be formed in any way between the connection end of the duct 55 to the connection port 51 a and the injection port 51. That is, in order to guide the washing water flowing in by the injection port 51 provided in the connection port 51a to the flow channel 52 side, it is a combination form in a simple shape with the connection end 55 to the connection port 51a of the discharge side path 51b. With this, it is possible to provide guidance that satisfies conditions that work well regardless of the amount of laundry, such as a large discharge flow width in the circumferential direction, a sufficient discharge flow thickness in the front-rear direction, and a discharge flow speed that can increase the landing distance, The piping structure is not particularly complicated, does not increase the risk of water leakage, and does not increase costs.

また、回転ドラム4の前端壁4bには図3(c)に示すように流路52を傾斜面3h1との間に絞り隙間Sを残して周方向に横切る環状のリブ状凸部4cが形成されている。さらに、このリブ状凸部4cはその位置が径方向に波打ち状に変化している。このため、リブ状凸部4cは回転ドラム4が回転すると噴射口51近傍での流路52に対する横切り位置、つまり絞り隙間Sの形成位置を図3(c)に3つの具体的位置で示すように径方向に変位させる。この結果、流路52を環状出口53に向かう洗濯水流は環状出口53近くで絞り隙間Sにより絞られる場合と、環状出口53から遠い位置で絞り隙間Sに絞られる場合とで、回転ドラム4内に向かう角度が上下に振れるので、回転ドラム4の軸線方向の広域に洗濯水を振り分け洗濯物に供与することができる。   Further, as shown in FIG. 3C, an annular rib-shaped convex portion 4c is formed on the front end wall 4b of the rotating drum 4 so as to cross the flow path 52 in the circumferential direction leaving the narrowing gap S between the inclined surface 3h1. Has been. Further, the rib-like convex portion 4c changes in a wavy shape in the radial direction. For this reason, when the rotary drum 4 rotates, the rib-like convex portion 4c shows the crossing position with respect to the flow path 52 in the vicinity of the injection port 51, that is, the formation position of the throttle gap S in three specific positions in FIG. Displace in the radial direction. As a result, the washing water flow toward the annular outlet 53 in the flow path 52 is narrowed by the narrowing gap S near the annular outlet 53 and in the case of being narrowed by the narrowing gap S at a position far from the annular outlet 53. Since the angle toward the top and bottom swings up and down, the wash water can be distributed and provided to the laundry in a wide area in the axial direction of the rotary drum 4.

ここに、リブ状凸部4cは、回転ドラム4の前端壁3h側に周方向に不均一に設けた吐
出ガイドで、流路52に噴射され環状出口53から回転ドラム4内に吐出される洗濯水の吐出方向を前後に乱し、あるいは変化させ、吐出した洗濯水が回転ドラム4内への洗濯物に着水する位置が前後に乱し、または変化させるものといえ、このような吐出ガイドとしては、吐出ガイドは、周方向に波打ちした内周、周方向に前後に波打ちした壁面、前記流路側に突出し周方向に波打ちし、またはおよび断続したリブ状凸部または羽根、前記流路を通って噴射される洗濯水の通過抵抗を周方向に変化させる邪魔部、の少なくとも1つとして吐出方向を前後に乱しまたは変化させる作用を営むことができ、可能な限りそれらを複合して採用することができる。
Here, the rib-like convex portion 4 c is a discharge guide that is provided unevenly in the circumferential direction on the front end wall 3 h side of the rotating drum 4, and is washed into the rotating drum 4 from the annular outlet 53. It can be said that the discharge direction of water is disturbed or changed back and forth, and the position where the discharged washing water lands on the laundry into the rotating drum 4 is disturbed or changed back and forth. As for the discharge guide, the inner circumference waved in the circumferential direction, the wall surface waved back and forth in the circumferential direction, the rib-shaped convex part or blade projecting toward the flow path side and waved in the circumferential direction, or intermittent, the flow path It can act to disturb or change the discharge direction back and forth as at least one of the baffles that change the passage resistance of the wash water sprayed through in the circumferential direction, and combine them as much as possible can do

これら放物線供与作用、前後振り分け作用によって洗濯水は洗濯物に前後方向にも偏りなく働き、洗剤の溶かし込効果、洗濯効果、すすぎ効果を高められる。   By these parabola donating action and front / rear sorting action, the washing water works evenly on the laundry in the front / rear direction, so that the detergent dissolving effect, washing effect, and rinsing effect can be enhanced.

なお、本実施の形態1のドラム式洗濯機には、回転ドラム4内に投入された洗濯物の量を検知する負荷量検知手段が設けられている。以下に負荷量検知手段について説明する。   Note that the drum type washing machine of the first embodiment is provided with a load amount detecting means for detecting the amount of laundry put into the rotating drum 4. The load amount detection means will be described below.

洗濯を開始すると、まず、制御回路(図示せず)は、モータ6を始動し、そのモータ6の回転速度を検知する回転検知部(図示せず)からは検知出力が入力される。回転検知部の検出周波数は、モータ6の回転に比例して直線的に変化する。即ち、制御回路は、回転検知部からの入力周波数が小さいときは、位相制御の手段によりモータ6の電源電圧の平均電圧を大きくし、また、周波数が大きくなると平均電圧を小さくする。   When washing is started, first, the control circuit (not shown) starts the motor 6, and a detection output is input from a rotation detection unit (not shown) that detects the rotation speed of the motor 6. The detection frequency of the rotation detector changes linearly in proportion to the rotation of the motor 6. That is, the control circuit increases the average voltage of the power supply voltage of the motor 6 by means of phase control when the input frequency from the rotation detector is small, and decreases the average voltage when the frequency increases.

この布量検知工程では、回転制御を行ないながら、制御回路内部で徐々にモータ6に印加する平均電圧を上昇させて高速回転に移行し、衣類が回転ドラム4の内壁に遠心力により均一に貼り付くようにする。その状態で、所定時間回転を持続した後、モータ6の通電を停止する。それにより、回転ドラム4の惰性回転が、逆にモータ6を回転させる状態になる。   In this cloth amount detection process, while controlling the rotation, the average voltage applied to the motor 6 is gradually increased in the control circuit to shift to high speed rotation, and the clothes are uniformly attached to the inner wall of the rotating drum 4 by centrifugal force. Try to stick. In this state, after continuing the rotation for a predetermined time, the energization of the motor 6 is stopped. Thereby, the inertial rotation of the rotating drum 4 is in a state where the motor 6 is rotated.

このとき回転検知部は、回転ドラム4の惰性回転力が摩擦トルクによりしだいに低下して停止する様子を分回転速度に変換して出力する。   At this time, the rotation detection unit converts a state in which the inertial rotating force of the rotating drum 4 gradually decreases due to the friction torque and stops the rotation, and outputs the converted value to the minute rotation speed.

通電停止から回転ドラム4の停止までの時間は、布量が多いときは長く、布量が少ないときは短い。この停止に要する時間の違いが布量に比例することを利用して布量を検知するものである。   The time from the stop of energization to the stop of the rotating drum 4 is long when the amount of cloth is large and short when the amount of cloth is small. The cloth amount is detected by utilizing the fact that the difference in time required for the stop is proportional to the cloth amount.

ここで布の重量をm、回転ドラム4の内周に分布する布の平均半径をr、回転角速度をωとすると、布にかかる遠心力Fは、F=mrωで求められる。モータ7の通電を停止した時、遠心力Fは、回転ドラム4の初期惰性回転力となる。従って回転ドラム4が停止するまでの時間はFに、即ち布量に比例するという理論から布量を検知できる。 Here, when the weight of the cloth is m, the average radius of the cloth distributed on the inner periphery of the rotary drum 4 is r, and the rotational angular velocity is ω, the centrifugal force F applied to the cloth is obtained by F = mrω 2 . When the energization of the motor 7 is stopped, the centrifugal force F becomes the initial inertial rotational force of the rotating drum 4. Accordingly, the cloth amount can be detected from the theory that the time until the rotating drum 4 stops is proportional to F, that is, the cloth amount.

しかし、モータ6や、回転ドラム4の構成は、個々の製品により異なるのが通常であり、従来構成をもう少し詳細に分析してみる。   However, the configurations of the motor 6 and the rotating drum 4 are usually different depending on individual products, and the conventional configuration will be analyzed in more detail.

ここで、回転ドラム4やモータ6の慣性モーメントをJdとすると、布を含めた回転系の慣性モーメントJは数式1で求められる。   Here, when the inertia moment of the rotating drum 4 and the motor 6 is Jd, the inertia moment J of the rotating system including the cloth is obtained by Equation 1.

また、モータ6の発生トルクをT、回転ドラム4や回転軸などが有する摩擦トルクをT
b、回転ドラム4の角加速度をαとおくと、これらの関係は数式2で表される。
Further, the generated torque of the motor 6 is T, and the friction torque of the rotating drum 4 or the rotating shaft is T.
b, where the angular acceleration of the rotating drum 4 is α, these relationships are expressed by Equation 2.

角加速度αは、角速度ωと時間tの関数として数式3で表される。従って、布の平均半径rが一定であれば、数式4で表されるように、布の重量mに応じて、回転速度すなわち角速度ωが変化する。   The angular acceleration α is expressed by Equation 3 as a function of the angular velocity ω and time t. Accordingly, if the average radius r of the cloth is constant, the rotational speed, that is, the angular speed ω changes according to the weight m of the cloth as represented by Expression 4.

数式4から、dω/dtつまり回転速度の変化は、布量mに反比例することが判る。つまり、モータ6の通電を停止して回転ドラム4を惰性回転させ、回転ドラム4が停止するまでのある時間区間における回転速度の変化を測定することによって、布量を知ることができる。   From Equation 4, it can be seen that dω / dt, that is, the change in the rotational speed, is inversely proportional to the fabric amount m. That is, the cloth amount can be known by stopping the energization of the motor 6 to rotate the rotary drum 4 by inertia and measuring the change in the rotational speed in a certain time interval until the rotary drum 4 stops.

ところで、上記したように、洗濯水を回転ドラム内に単純に噴射するようにした場合、折角の循環水が回転ドラム内の洗濯物の局部にしか噴射できず、循環効果を生かし切れない。一方、循環水を広域に噴射するのに特別な噴射ノズルを採用すると、必要ポンプ圧の上昇も併せコスト上昇の原因になるし、限度がある。   By the way, as described above, when the washing water is simply sprayed into the rotating drum, the circulating water at the corner can be sprayed only to the local portion of the laundry in the rotating drum, and the circulation effect cannot be fully utilized. On the other hand, if a special injection nozzle is used for injecting circulating water over a wide area, an increase in the required pump pressure causes a cost increase and there is a limit.

そこで、本実施の形態1では、水槽3内の水を循環ポンプ20により循環させるのに、例えば回転速度制御が可能であるDCブラシレスモータを用いて、吐出される循環水の流量、流速を調整することで、特別な噴射ノズルを採用することなく、吐出される循環水の上下方向の角度、左右方向の広がり度合いを変えることができる。   Therefore, in the first embodiment, in order to circulate the water in the water tank 3 by the circulation pump 20, the flow rate and flow rate of the circulating water to be discharged are adjusted using, for example, a DC brushless motor capable of controlling the rotation speed. By doing so, it is possible to change the angle in the vertical direction and the degree of spread in the horizontal direction of the circulating water to be discharged without adopting a special injection nozzle.

この結果、循環ポンプ20により、水槽3内の衣類に対し満遍なく、かつ最適な位置に循環水を供給可能となり、洗い性能およびすすぎ性能を高めることができる。また、衣類が位置しない空間に無駄に循環水を供給することを避けられるので、無駄な電力の消費を抑えられ、洗剤水による異常な発泡を抑制することもできる。   As a result, the circulating pump 20 can supply the circulating water evenly and optimally to the clothes in the water tank 3, and can improve the washing performance and the rinsing performance. Moreover, since it is possible to avoid unnecessary supply of circulating water to a space where clothing is not located, it is possible to suppress wasteful power consumption and to suppress abnormal foaming caused by detergent water.

循環ポンプ20の回転速度は、通常運転時は例えば上記したように3500rpm程度とし、毎分20L程度の循環水を水槽3内の衣類に供給することで、洗い性能、すすぎ性能の向上を図る。一方、負荷量検知手段により衣類の量が所定値より少ないと判断された場合は、循環ポンプ20の回転速度を、例えば2500rpm程度に落とし、供給する循環水を毎分15L程度にするとともに、図1の矢印bのように、循環水の吐出される上下方向の角度を水平に近づけ、左右方向の広がり度合いを小さくする。   The rotation speed of the circulation pump 20 is, for example, about 3500 rpm as described above during normal operation, and the circulation performance of about 20 L per minute is supplied to the clothes in the water tank 3 to improve the washing performance and the rinsing performance. On the other hand, when it is determined by the load amount detection means that the amount of clothing is less than the predetermined value, the rotational speed of the circulation pump 20 is reduced to about 2500 rpm, for example, and the circulating water to be supplied is about 15 L / min. As shown by the arrow b in FIG. 1, the vertical angle at which the circulating water is discharged is made closer to the horizontal, and the extent of the horizontal direction is reduced.

これにより、衣類が少ない場合は、吐出された循環水が水槽3内の下方に位置する衣類に当たらないという状態を避けることができ、効率的に循環水を供給することができる。   Thereby, when there are few clothes, the state where the discharged circulating water does not hit the clothing located in the downward direction in the water tank 3 can be avoided, and circulating water can be supplied efficiently.

また、循環ポンプ20は、通常運転時は例えば75%程度の駆動デューティで循環水を水槽3内の衣類に供給することで、洗い性能、すすぎ性能の向上を図る。一方、負荷量検
知手段により衣類の量が所定値より少ないと判断された場合は、循環ポンプ20は、例えば50%程度の駆動デューティで循環水を水槽3内の衣類に供給することで、必要以上の循環水を少量の衣類に供給することを避ける。
In addition, the circulation pump 20 improves the washing performance and the rinsing performance by supplying the circulating water to the clothes in the water tank 3 with a driving duty of, for example, about 75% during normal operation. On the other hand, when it is determined by the load amount detection means that the amount of clothing is less than the predetermined value, the circulation pump 20 is necessary by supplying circulating water to the clothing in the water tank 3 with a driving duty of about 50%, for example. Avoid supplying the above circulating water to a small amount of clothing.

これにより、衣類が少ない場合は、衣類が多い場合に比べて比較的早い時間で均一に循環水が行き渡るので、必要以上の循環水を供給することを避けられる為、必要以上の電力を消費することもない。過剰に循環水を供給しても、洗い性能、すすぎ性能の向上は図れず、かえって洗剤水による異常な発泡を招き、それによりすすぎ性能を悪化させる可能性もある。よって、過剰な循環水の供給を避けることで、上記の問題を回避することができる。   As a result, when there are few clothes, the circulating water is evenly distributed in a relatively early time compared to when there are many clothes, so it is possible to avoid supplying more circulating water than necessary, thus consuming more power than necessary. There is nothing. Even if circulating water is supplied excessively, the washing performance and the rinsing performance cannot be improved, and abnormal foaming due to the detergent water may be caused, which may deteriorate the rinsing performance. Therefore, the above problem can be avoided by avoiding excessive supply of circulating water.

また、循環ポンプ20の回転速度は、通常運転時は例えば上記したように3500rpm程度とし、毎分20L程度の循環水を水槽3内の衣類に供給することで、洗い性能、すすぎ性能の向上を図る。一方、運転コースの入力手段により、デリケートな衣類を洗濯するコースを設定された場合は、循環ポンプ20の回転速度を、例えば2000rpm程度にし、供給する循環水を毎分12L程度にするとともに、循環水の吐出される上下方向の角度を水平に近づけ、左右方向の広がり度合いを小さくする。   In addition, the rotation speed of the circulation pump 20 is set to about 3500 rpm, for example, as described above during normal operation, and the circulation performance of about 20 L per minute is supplied to the clothes in the water tank 3 to improve the washing performance and the rinsing performance. Plan. On the other hand, when a course for washing delicate clothes is set by the input means of the operation course, the rotation speed of the circulation pump 20 is set to, for example, about 2000 rpm, and the circulating water to be supplied is set to about 12 L / min. The vertical angle at which water is discharged is made closer to the horizontal, and the degree of spread in the horizontal direction is reduced.

これにより、デリケートな衣類を洗濯する場合でも、循環水の吐出の勢いにより衣類に過度な機械力を与えて布傷みが発生することを防止しつつ、十分な洗浄力を得ることができる。また、デリケートな衣類の洗濯用洗剤は一般的に発泡性が高いが、回転速度を下げて流量、流速を落とすことで、異常な発泡も防止することができる。   As a result, even when delicate clothes are washed, it is possible to obtain a sufficient cleaning power while preventing excessive fabric from causing mechanical damage to the clothes due to the momentum of discharge of circulating water. Further, delicate laundry detergents generally have high foaming properties, but abnormal foaming can be prevented by lowering the rotation speed and decreasing the flow rate and flow rate.

また、循環ポンプ20は、通常運転時は例えば75%程度の駆動デューティで循環水を水槽3内の衣類に供給することで、洗い性能、すすぎ性能の向上を図る。一方、運転コースの入力手段により、デリケートな衣類を洗濯するコースを設定された場合は、循環ポンプ20は、例えば75%以上の駆動デューティで循環水を水槽3内の衣類に供給することで、一般的に短いデリケート衣類を洗濯するコースの洗い時間においても、十分に循環水を供給することができる。   In addition, the circulation pump 20 improves the washing performance and the rinsing performance by supplying the circulating water to the clothes in the water tank 3 with a driving duty of, for example, about 75% during normal operation. On the other hand, when the course for washing delicate clothes is set by the input means of the driving course, the circulation pump 20 supplies the circulating water to the clothes in the water tank 3 with a driving duty of 75% or more, for example. In general, sufficient circulating water can be supplied even during the washing time of a course in which short delicate clothes are washed.

これにより、デリケートな衣類を洗濯する場合、一般的に短いデリケート衣類を洗濯するコースの洗い時間においても、十分な循環水を供給することができ、水が浸透しにくいウールなどの衣類についても、より早く効果的に洗濯水を浸透させることができるので、洗い性能、すすぎ性能を向上させることができる。   As a result, when washing delicate clothes, it is possible to supply sufficient circulating water even in the washing time of the course in which short delicate clothes are generally washed. Since washing water can be permeated more quickly and effectively, washing performance and rinsing performance can be improved.

また、循環ポンプ20は、洗い工程、すすぎ工程において、回転速度を例えば3500rpmから2500rpmへ、また2500rpmから3500pmへと周期的に変化させることで、吐出される循環水の上下方向の角度、左右方向の広がり度合いを工程中に周期的に変えることができる。   Further, the circulation pump 20 periodically changes the rotation speed from, for example, 3500 rpm to 2500 rpm and from 2500 rpm to 3500 pm in the washing process and the rinsing process. The degree of spread can be changed periodically during the process.

これにより、回転ドラム4内の前後左右に均等に全体にわたって吐出されるので、回転ドラム4内に存在する衣類に満遍なく循環水を供給することができる。即ち、例えば衣類が多い場合や、ふとん、毛布といった大物衣類を洗濯する場合でも、その局部にのみ循環水が供給されるという状況を回避でき、洗い性能、すすぎ性能のムラを低減することができる。   Thereby, since it discharges over the whole back and forth, right and left in the rotating drum 4 uniformly, circulating water can be supplied uniformly to the clothing which exists in the rotating drum 4. That is, for example, even when there are many clothes or when washing large clothes such as futons and blankets, it is possible to avoid the situation in which circulating water is supplied only to the local areas, and to reduce unevenness in washing performance and rinsing performance. .

なお、本実施の形態1では、循環ポンプ20を洗濯機本体2の底部である台板2a上に設置する構成としたが、これに限定されるものではなく、水槽3内の水を循環させるのに循環ポンプ20を水槽3の下部3bに設置する構成でも良く、同等の効果を奏することができる。   In addition, in this Embodiment 1, although it was set as the structure which installs the circulation pump 20 on the base plate 2a which is the bottom part of the washing machine main body 2, it is not limited to this, The water in the water tank 3 is circulated. However, the structure which installs the circulation pump 20 in the lower part 3b of the water tank 3 may be sufficient, and there can exist an equivalent effect.

回転ドラムを水平方向または傾斜して設置したドラム式洗濯機での、洗いやすすぎなどの工程で、水槽内の水を循環させるのに、簡単かつ安価な配管で漏水リスクを少なく実現し、また、循環水の吐出口が特別な形状、構造でなくとも、循環ポンプの回転速度を変えることで吐出される循環水の上下方向の角度、左右方向の広がり度合いを変えることができ、衣類の種類、量、嵩に関わらず、洗い性能、すすぎ性能を高めることができるので、有底円筒形に形成された回転ドラムを、開口する正面側から底部となる背面側に向けて回転軸方向が水平または水平方向から下向き傾斜となるようにして水槽内に設置し、回転ドラムを回転駆動することにより回転ドラム内に収容した洗濯物を洗濯するドラム式洗濯機として有用である。   In a drum-type washing machine with a rotating drum installed horizontally or inclined, it is possible to circulate the water in the aquarium in a process such as washing too easily. Even if the outlet of the circulating water is not specially shaped and structured, changing the rotation speed of the circulating pump can change the vertical angle of the circulating water, the degree of spread in the left and right, and the type of clothing Because the washing performance and rinsing performance can be improved regardless of the amount and bulk, the rotation axis direction of the rotating drum formed in the bottomed cylindrical shape is horizontal from the opening front side to the back side as the bottom. Or it is useful as a drum-type washing machine which installs in a water tank so that it may become a downward slope from a horizontal direction, and wash | cleans the laundry accommodated in the rotating drum by rotationally driving the rotating drum.

本発明の実施の形態に係るドラム式洗濯機の断面図Sectional drawing of the drum type washing machine which concerns on embodiment of this invention (a)同ドラム式洗濯機に用いた循環ポンプの断面図(b)同ドラム式洗濯機に用いた循環ポンプの側面図(c)同ドラム式洗濯機に用いた循環ポンプの下面図(A) Cross-sectional view of the circulation pump used in the drum type washing machine (b) Side view of the circulation pump used in the drum type washing machine (c) Bottom view of the circulation pump used in the drum type washing machine (a)同ドラム式洗濯機の水循環経路の吐出側経路を水槽に接続するダクトを示す正面図(b)同ドラム式洗濯機の水循環経路の吐出側経路を水槽に接続するダクトを示す横断面図(c)同ドラム式洗濯機の水循環経路の吐出側経路を水槽に接続するダクトを示す縦断面図(A) Front view showing a duct connecting the discharge side path of the water circulation path of the drum type washing machine to the water tank (b) Cross section showing the duct connecting the discharge side path of the water circulation path of the drum type washing machine to the water tank Fig. (C) Longitudinal sectional view showing a duct connecting the discharge side path of the water circulation path of the drum type washing machine to the water tank

符号の説明Explanation of symbols

3 水槽
3h 前端壁
4 回転ドラム
4b 前端壁
6 モータ
16 水循環系
20 循環ポンプ
31 水循環経路
52 流路
3 Water tank 3h Front end wall 4 Rotating drum 4b Front end wall 6 Motor 16 Water circulation system 20 Circulation pump 31 Water circulation path 52 Flow path

Claims (6)

有底円筒形に形成された回転ドラムと、前記回転ドラムを、開口する正面側から底部となる背面側に向けて回転軸方向が水平または水平方向から下向き傾斜となるようにして内部に配設する水槽と、前記回転ドラムを回転駆動するモータと、前記モータ等を制御して洗い工程、すすぎ工程の少なくとも1つを実行する制御手段と、前記水槽内の洗濯水を前記水槽に接続した循環経路を通じ、回転速度可変のモータからなる循環ポンプにより循環させる水循環系とを備え、前記水循環系は、前記水槽の前端壁裏面に設けた噴射口から噴射された洗濯水が前記水槽の前端壁裏面と前記回転ドラムの前端壁表面との間の流路を介して前記回転ドラム内に吐出されるようにし、前記循環ポンプは、回転速度可変のモータからなることを特徴とするドラム式洗濯機。 A rotating drum formed in a bottomed cylindrical shape, and the rotating drum are arranged inside such that the rotating shaft direction is horizontal or inclined downward from the horizontal direction from the opening front side to the bottom rear side. A water tank that rotates, a motor that rotationally drives the rotating drum, control means that controls the motor and the like to perform at least one of a washing process and a rinsing process, and a circulation in which washing water in the water tank is connected to the water tank A water circulation system that circulates through a path by a circulation pump composed of a motor having a variable rotation speed, and the water circulation system is configured such that washing water sprayed from an injection port provided on the back surface of the front end wall of the water tank is back of the front end wall of the water tank. And the front end wall surface of the rotary drum is discharged into the rotary drum through a flow path, and the circulation pump is composed of a motor having a variable rotation speed. Equation washing machine. 回転ドラム内の洗濯物の量を検知する布量検知手段をさらに備え、前記布量検知手段により布量が少ないと判定された場合は、循環ポンプの回転速度を通常より低くすることを特徴とする請求項1記載のドラム式洗濯機。 The apparatus further comprises a cloth amount detecting means for detecting the amount of laundry in the rotating drum, and when the cloth amount detecting means determines that the cloth amount is small, the rotational speed of the circulation pump is made lower than usual. The drum type washing machine according to claim 1. 回転ドラム内の洗濯物の量を検知する布量検知手段をさらに備え、前記布量検知手段により布量が少ないと判定された場合は、前記循環ポンプのON/OFFデューティ比を通常より小さくすることを特徴とする請求項1記載のドラム式洗濯機。 A cloth amount detecting means for detecting the amount of laundry in the rotating drum is further provided, and when the cloth amount detecting means determines that the cloth amount is small, the ON / OFF duty ratio of the circulation pump is made smaller than usual. The drum-type washing machine according to claim 1. 運転するコースを使用者が設定する入力手段をさらに備え、前記入力手段によりデリケートな衣類を洗濯するコースを設定された場合は、循環ポンプの回転速度を通常より低くすることを特徴とする請求項1記載のドラム式洗濯機。 An input means for a user to set a course to be driven is provided, and when the course for washing delicate clothes is set by the input means, the rotational speed of the circulation pump is made lower than usual. The drum-type washing machine according to 1. 運転するコースを使用者が設定する入力手段を備え、入力手段によりデリケートな衣類を洗濯するコースを設定された場合は、前記循環ポンプのON/OFFデューティ比を通常より大きくすることを特徴とする請求項1記載のドラム式洗濯機。 An input means for a user to set a course to be driven is provided, and when the course for washing delicate clothes is set by the input means, the ON / OFF duty ratio of the circulation pump is made larger than usual. The drum type washing machine according to claim 1. 洗い工程、すすぎ工程の少なくとも1つの工程中において、循環ポンプの回転速度を周期的に変化させることを特徴とする請求項1記載のドラム式洗濯機。 The drum type washing machine according to claim 1, wherein the rotational speed of the circulation pump is periodically changed during at least one of the washing step and the rinsing step.
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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011250922A (en) * 2010-06-01 2011-12-15 Panasonic Corp Drum type washing machine
WO2013073140A1 (en) 2011-11-14 2013-05-23 パナソニック株式会社 Drum-type washing machine
CN103620103A (en) * 2011-09-05 2014-03-05 松下电器产业株式会社 Washing machine and rinsing method using same
JP5589135B1 (en) * 2013-12-05 2014-09-10 日立アプライアンス株式会社 Drum washing machine
JP2015062606A (en) * 2013-09-26 2015-04-09 日立アプライアンス株式会社 Drum type washing machine
TWI510691B (en) * 2013-08-29 2015-12-01 Hitachi Appliances Inc Drum type washer
WO2016068574A1 (en) * 2014-10-27 2016-05-06 엘지전자 주식회사 Washing machine
KR20170039995A (en) * 2015-10-02 2017-04-12 엘지전자 주식회사 Washing machine
CN106574418A (en) * 2014-06-10 2017-04-19 Lg电子株式会社 Method of controlling washing machine
KR20180035767A (en) * 2015-10-02 2018-04-06 엘지전자 주식회사 Washing machine
EP3505668A1 (en) 2017-12-28 2019-07-03 LG Electronics Inc. Method for controlling washing machine
EP3505669A1 (en) 2017-12-28 2019-07-03 LG Electronics Inc. Washing machine, and method for controlling the same
EP3505670A1 (en) 2017-12-28 2019-07-03 LG Electronics Inc. Method for controlling washing machine
EP3505667A1 (en) 2017-12-28 2019-07-03 LG Electronics Inc. Method for controlling washing machine
EP3508647A1 (en) 2018-01-05 2019-07-10 LG Electronics Inc. Washing machine and method for controlling the same
EP3508644A1 (en) 2018-01-05 2019-07-10 LG Electronics Inc. Method for controlling washing machine
CN110387706A (en) * 2018-04-16 2019-10-29 青岛海尔滚筒洗衣机有限公司 Roller washing machine and its spray system
CN110387707A (en) * 2018-04-16 2019-10-29 青岛海尔滚筒洗衣机有限公司 Roller washing machine and its door body and spray system
CN110387705A (en) * 2018-04-16 2019-10-29 青岛海尔滚筒洗衣机有限公司 Roller washing machine and its spray system
WO2019214516A1 (en) * 2018-05-10 2019-11-14 青岛海尔滚筒洗衣机有限公司 Drum washing machine and spraying control method thereof
WO2020263003A1 (en) 2019-06-28 2020-12-30 엘지전자 주식회사 Washing machine and method for controlling washing machine
WO2021002639A1 (en) 2019-07-04 2021-01-07 엘지전자 주식회사 Washing machine and control method of washing machine
WO2021002640A1 (en) 2019-07-04 2021-01-07 엘지전자 주식회사 Washing machine and method for controlling washing machine
US11408115B2 (en) 2018-02-22 2022-08-09 Electrolux Appliances Aktiebolag Laundry washing machine equipped with a liquid supply line

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JP2011250922A (en) * 2010-06-01 2011-12-15 Panasonic Corp Drum type washing machine
CN103620103A (en) * 2011-09-05 2014-03-05 松下电器产业株式会社 Washing machine and rinsing method using same
WO2013073140A1 (en) 2011-11-14 2013-05-23 パナソニック株式会社 Drum-type washing machine
TWI510691B (en) * 2013-08-29 2015-12-01 Hitachi Appliances Inc Drum type washer
JP2015062606A (en) * 2013-09-26 2015-04-09 日立アプライアンス株式会社 Drum type washing machine
JP5589135B1 (en) * 2013-12-05 2014-09-10 日立アプライアンス株式会社 Drum washing machine
CN106574418A (en) * 2014-06-10 2017-04-19 Lg电子株式会社 Method of controlling washing machine
CN106574418B (en) * 2014-06-10 2019-04-23 Lg电子株式会社 The method for controlling washing machine
US10196769B2 (en) 2014-10-27 2019-02-05 Lg Electronics Inc. Washing machine
WO2016068574A1 (en) * 2014-10-27 2016-05-06 엘지전자 주식회사 Washing machine
KR20170039995A (en) * 2015-10-02 2017-04-12 엘지전자 주식회사 Washing machine
KR102127844B1 (en) * 2015-10-02 2020-06-29 엘지전자 주식회사 Washing machine
KR20180035767A (en) * 2015-10-02 2018-04-06 엘지전자 주식회사 Washing machine
KR102348038B1 (en) * 2015-10-02 2022-01-05 엘지전자 주식회사 Washing machine
EP3505668A1 (en) 2017-12-28 2019-07-03 LG Electronics Inc. Method for controlling washing machine
EP3505669A1 (en) 2017-12-28 2019-07-03 LG Electronics Inc. Washing machine, and method for controlling the same
EP3505670A1 (en) 2017-12-28 2019-07-03 LG Electronics Inc. Method for controlling washing machine
EP3505667A1 (en) 2017-12-28 2019-07-03 LG Electronics Inc. Method for controlling washing machine
EP3933090A1 (en) 2017-12-28 2022-01-05 LG Electronics Inc. Washing machine having a circulation pump
EP3508647A1 (en) 2018-01-05 2019-07-10 LG Electronics Inc. Washing machine and method for controlling the same
EP3842581A1 (en) 2018-01-05 2021-06-30 LG Electronics, Inc. Method for controlling washing machine
EP3508644A1 (en) 2018-01-05 2019-07-10 LG Electronics Inc. Method for controlling washing machine
US11408115B2 (en) 2018-02-22 2022-08-09 Electrolux Appliances Aktiebolag Laundry washing machine equipped with a liquid supply line
CN110387705A (en) * 2018-04-16 2019-10-29 青岛海尔滚筒洗衣机有限公司 Roller washing machine and its spray system
CN110387707A (en) * 2018-04-16 2019-10-29 青岛海尔滚筒洗衣机有限公司 Roller washing machine and its door body and spray system
CN110387707B (en) * 2018-04-16 2021-12-03 青岛海尔洗涤电器有限公司 Roller washing machine and door body and spraying system thereof
CN110387706A (en) * 2018-04-16 2019-10-29 青岛海尔滚筒洗衣机有限公司 Roller washing machine and its spray system
CN110387705B (en) * 2018-04-16 2022-04-15 青岛海尔洗涤电器有限公司 Roller washing machine and spraying system thereof
WO2019214516A1 (en) * 2018-05-10 2019-11-14 青岛海尔滚筒洗衣机有限公司 Drum washing machine and spraying control method thereof
WO2020263003A1 (en) 2019-06-28 2020-12-30 엘지전자 주식회사 Washing machine and method for controlling washing machine
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