JP5397093B2

JP5397093B2 - Drum washing machine

Info

Publication number: JP5397093B2
Application number: JP2009196249A
Authority: JP
Inventors: 智之菊川; 潤一縄間; 眞大山; 剛村尾
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2009-08-27
Filing date: 2009-08-27
Publication date: 2014-01-22
Anticipated expiration: 2029-08-27
Also published as: JP2011045516A

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、水槽内の洗濯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および２参照）。 A drum-type washing machine having such a circulation function that circulates washing water in a water tank with a circulation pump is already known (see, for example, Patent Documents 1 and 2).

特許文献１は、循環手段による回転ドラム内への噴射を、回転ドラム前面側から回転ドラム中心側に、ノズルに少しずつ角度を変えて複数形成されている噴射口より噴射し、高容量の被処理物を効率よく洗浄するものである。 In Patent Document 1, the injection into the rotating drum by the circulation means is performed from a plurality of injection ports formed by changing the angle little by little from the front surface side of the rotating drum to the center side of the rotating drum, and a high-capacity target. The processed product is efficiently cleaned.

特許文献２は、循環ポンプのポンプケーシングは、前記ポンプ羽根車の正逆転に応じて吐出が切り替わる二つの吐出口を有することで、回転ドラムの正逆転に応じて洗い時やすすぎ時の洗濯水の掛ける向きが変わるものである。 According to Patent Document 2, the pump casing of the circulation pump has two discharge ports that switch discharge according to the forward and reverse rotation of the pump impeller, so that the washing water when washing and rinsing according to the forward and reverse rotation of the rotary drum is performed. The direction in which is applied changes.

特開平１０−１２７９７８号公報JP-A-10-127978 特開２００８−０７３１２８号公報JP 2008-073128 A

しかし、特許文献１に開示の水循環技術は、ノズルに少しずつ角度を変えて複数形成されている噴射口より棒状のシャワーを噴射するため、各々のシャワーは局所的になり、それをカバーするために角度の異なる複数の噴射口としているが、節水の流れがある昨今のドラム式洗濯機では、少ない水量で循環を行う必要があり、噴射口の数でカバーするには限界がある。 However, since the water circulation technique disclosed in Patent Document 1 sprays a bar-shaped shower from a plurality of nozzles formed by changing the angle little by little to the nozzle, each shower becomes local and covers it. However, in recent drum-type washing machines with water-saving flow, it is necessary to circulate with a small amount of water, and there is a limit to cover with the number of spray ports.

また、特許文献２に開示の水循環技術は、ポンプ羽根車の正逆転に応じて吐出が切り替わる二つの吐出口を有することで、回転ドラムの正逆転に応じて洗い時やすすぎ時の洗濯水の掛ける向きを変え、それぞれの回転ドラムの各回転方向回転時に落下する洗濯物にシャワーを当てて洗濯物の重さを増やし叩き洗いによる洗浄力をあげるものであるが、特に高容量の洗濯物量時には叩き洗いの状態にならず、その効果が得られない。 Further, the water circulation technique disclosed in Patent Document 2 has two discharge ports that switch discharge according to the forward and reverse rotation of the pump impeller, so that the washing water at the time of washing and rinsing according to the forward and reverse rotation of the rotary drum is provided. The direction of hanging is changed, and a shower is applied to the laundry that falls when the rotating direction of each rotating drum rotates, increasing the weight of the laundry and increasing the washing power by tapping, especially when the amount of laundry is high capacity It is not in the state of scouring, and the effect cannot be obtained.

本発明の主たる目的は、水槽内の洗濯水を循環ポンプにより循環させるのに、循環ポンプからの吐出側経路による洗濯水の回転ドラム内の洗濯物への吐出の効率を上げることで洗浄力の高い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 the efficiency of discharging the washing water in the rotating drum to the laundry in the rotating drum by the discharge side path from the circulation pump in order to circulate the washing water in the water tank by the circulation pump. It is to provide a high drum type washing machine.

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、正面側に第１の開口を有し有底円筒形に形成された回転ドラムと、前記第１の開口に対応して第２の開口を有するとともに前記回転ドラムを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設置する水槽と、前記回転ドラムを回転制御するモータと、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循環ポンプにより前記回転ドラム内に循環させる水循環系とを備え、前記モータ、循環ポンプ等を駆動して洗浄工程、すすぎ工程の少なくとも１つが行えるドラム式洗濯機において、前記水循環系は、前記水槽の前端壁に設けられ前記循環経路の循環ポンプからの吐出側経路が接続される導水路と、前記導水路に設けられ洗濯水を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に吐出させる複数の吐出口と、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から前記回転ドラム内に洗濯水を噴射する複数の噴射口とを設け、前記吐出口は、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に前記回転ドラムの略回転中心側に向け所定の周方向範囲で開口し、前記水槽の前端壁の裏面は、前記第２の開口の周端部に設けられ前記吐出口から吐出した洗濯水が前記第１の開口を介して前記回転ドラム内方向に向かうようにする案内面を有し、前記吐出口から吐出された洗濯水は前記水槽の前端壁の裏面と案内面に沿って流れ、前記噴射口から噴射される構成とし、複数の案内面の形状は、二種類以上からなり、前記案内面の少なくとも一つは、湾曲面と傾斜面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 rotary drum having a first opening on the front side and formed in a bottomed cylindrical shape, and a second corresponding to the first opening. A water tank that is installed such that the rotation axis direction is horizontal or inclined downward from the horizontal direction from the front side toward the back side that is the bottom, and a motor that controls the rotation of the rotation drum. A water circulation system that circulates the washing water in the water tank into the rotary drum by a circulation pump through a circulation path connected to the water tank, and drives the motor, the circulation pump, etc. to at least one of a washing process and a rinsing process. In the drum-type washing machine that can perform the operation, the water circulation system is provided in a water guide path provided on a front end wall of the water tank and connected to a discharge side path from a circulation pump of the circulation path. A plurality of discharge ports for discharging washing water between the front end wall back surface of the water tank and the front end wall surface of the rotating drum, and the rotating drum from between the front end wall back surface of the water tank and the front end wall surface of the rotating drum. A plurality of injection ports for injecting washing water therein, and the discharge port is provided between a front end wall rear surface of the water tub and a front end wall surface of the rotary drum toward a substantially rotation center side of the rotary drum. Opening in the circumferential direction range, the back surface of the front end wall of the water tank is provided at the peripheral end portion of the second opening, and the washing water discharged from the discharge port is inward of the rotating drum through the first opening. The washing water discharged from the discharge port flows along the back surface and the guide surface of the front end wall of the water tub, and is jetted from the injection port. shape consists of two or more, little of the guide surface Both One is characterized in that an inclined surface and a curved surface.

このような構成では、各々の吐出口近傍の案内面の形状を少なくとも二種類以上とすることにより、それぞれの噴射口からの洗濯水の噴射の回転ドラムの回転軸に対する噴射角度や、噴射の拡がり角度が異なる噴射が実現可能となり、低容量や高容量の洗濯物それぞれに最適な噴射角度や拡がり角度を設けることが可能になり、洗浄効果を高めることが可能となる。 In such a configuration, by forming at least two types of guide surfaces in the vicinity of each discharge port, the spray angle of the washing water from each spray port with respect to the rotation axis of the rotating drum, and the spread of the spray It is possible to realize injection with different angles, and it is possible to provide an optimal injection angle and spread angle for each of the low-volume and high-volume laundry, thereby enhancing the cleaning effect.

本発明のドラム式洗濯機によれば、各々の吐出口近傍の案内面の形状を少なくとも二種類以上とすることにより、それぞれの噴射口からの洗濯水の噴射の回転ドラムの回転軸に対する噴射角度や、噴射の拡がり角度が異なる噴射が実現可能となり、低容量や高容量の洗濯物それぞれに最適な噴射角度や拡がり角度を設けることが可能になり、洗浄効果を高めることが可能となる。 According to the drum type washing machine of the present invention, at least two types of guide surfaces in the vicinity of each discharge port are used, so that the spray angle of the washing water from each spray port with respect to the rotation axis of the rotating drum is In addition, it is possible to realize injections with different spray spread angles, and it is possible to provide optimum spray angles and spread angles for the low-volume and high-capacity laundry, thereby enhancing the cleaning effect.

本発明の実施の形態１におけるドラム式洗濯機の概略構造を示す断面図Sectional drawing which shows schematic structure of the drum type washing machine in Embodiment 1 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(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 （ａ）同ドラム式洗濯機の水槽の要部斜視図（ｂ）同ドラム式洗濯機の水槽の前面壁を内方より見た平面図(A) Perspective view of the main part of the water tank of the drum type washing machine (b) Plan view of the front wall of the water tank of the drum type washing machine as seen from the inside 同ドラム式洗濯機の水循環経路の導水路近傍の断面図Sectional view of the vicinity of the water conduit in the water circulation path of the drum type washing machine （ａ）同ドラム式洗濯機の水循環経路の吐出口近傍の断面図（ｂ）同ドラム式洗濯機の水循環経路の他の吐出口近傍の断面図(A) Sectional view near the discharge port of the water circulation path of the drum type washing machine (b) Sectional view near the other discharge port of the water circulation path of the drum type washing machine 同ドラム式洗濯機の洗濯水の噴射の状態を示す正面図Front view showing a state of washing water jet of the drum type washing machine （ａ）本発明の実施の形態２におけるドラム式洗濯機の水循環経路の吐出口近傍の断面図（ｂ）同ドラム式洗濯機の水循環経路の他の吐出口近傍の断面図(A) Cross-sectional view of the vicinity of the discharge port of the water circulation path of the drum type washing machine in Embodiment 2 of the present invention (b) Cross-sectional view of the vicinity of the other discharge port of the water circulation path of the drum type washing machine 本発明の実施の形態３におけるドラム式洗濯機の水循環経路の吐出口近傍の断面図Sectional drawing of discharge port vicinity of the water circulation path | route of the drum type washing machine in Embodiment 3 of this invention 本発明の実施の形態４におけるドラム式洗濯機の水循環経路の吐出口近傍の断面図Sectional drawing of discharge port vicinity of the water circulation path | route of the drum type washing machine in Embodiment 4 of this invention （ａ）本発明の実施の形態５におけるドラム式洗濯機の水循環経路の吐出口近傍の拡大断面図（ｂ）同ドラム式洗濯機の水循環経路の他の吐出口近傍の拡大断面図(A) Enlarged sectional view near the discharge port of the water circulation path of the drum type washing machine in Embodiment 5 of the present invention (b) Enlarged sectional view near the other discharge port of the water circulation path of the drum type washing machine 本発明の実施の形態６におけるドラム式洗濯機の水循環経路の吐出口近傍の断面図Sectional drawing of discharge port vicinity of the water circulation path | route of the drum type washing machine in Embodiment 6 of this invention

第１の発明は、正面側に第１の開口を有し有底円筒形に形成された回転ドラムと、前記第１の開口に対応して第２の開口を有するとともに前記回転ドラムを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設置する水槽と、前記回転ドラムを回転制御するモータと、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循環ポンプにより前記回転ドラム内に循環させる水循環系とを備え、前記モータ、循環ポンプ等を駆動して洗浄工程、すすぎ工程の少なくとも１つが行えるドラム式洗濯機において、前記水循環系は、前記水槽の前端壁に設けられ前記循環経路の循環ポンプからの吐出側経路が接続される導水路と、前記導水路に設けられ洗濯水を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に吐出させる複数の吐出口と、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から前記回転ドラム内に洗濯水を噴射する複数の噴射口とを設け、前記吐出口は、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に前記回転ドラムの略回転中心側に向け所定の周方向範囲で開口し、前記水槽の前端壁の裏面は、前記第２の開口の周端部に設けられ前記吐出口から吐出した洗濯水が前記第１の開口を介して前記回転ドラム内方向に向かうようにする案内面を有し、前記吐出口から吐出された洗濯水は前記水槽の前端壁の裏面と案内面に沿って流れ、前記噴射口から噴射される構成とし、複数の案内面の形状は、二種類以上からなり、前記案内面の少なくとも一つは、湾曲面と傾斜面からなることを特徴とするドラム式洗浄機とすることにより、それぞれの噴射口からの洗浄水の噴射の回転ドラムの回転軸に対する噴射角度や、噴射の拡がり角度が異なる噴射が実現可能となり、低容量や高容量の洗浄物それぞれに最適な噴射角度や拡がり角度を設けることが可能になると同時に、洗浄開始時の洗浄物が洗浄液を含んでいない状態でかさばっている際に、一方の噴射口近傍が洗浄物によって周方向に塞がれた場合でも、他方の噴射口から回転ドラムの第１の開口付近に向けて大きな拡がりを有する噴射を行い、噴射口近傍の洗浄物を早期に濡らし体積を減らすことで、洗浄物による一方の噴射口近傍の塞ぎを解消することができ、さらに、一方の噴射口からは回転ドラムの中心軸方向に向かって拡がりが小さく回転ドラムの奥方向に向けた噴射を行うことで、他方の噴射口からの大きな拡がりを有する噴射では濡れにくい回転ドラムの中心付近から奥部分の洗浄物も早期に濡らし、洗浄水の効果を高めるとともに、中心付近から奥部分の洗浄物の体積を洗浄水を染み込ませることで減らし、回転ドラム内で洗浄物が早期に動きやすくなるので、叩き洗いの効果も向上するとともに、洗浄物の体積が減ることによりできた隙間から洗浄物全体への噴射が可能となり相乗的に洗浄効果を高めることが可能となる。また、案内面の少なくとも一つは、湾曲面と傾斜面で構成されたことを特徴とするドラム式洗浄機とすることにより、洗浄水を湾曲面に沿って滑らかに傾斜面に沿わすことが出来るとともに、案内面に沿って流れる洗浄水の噴射の回転ドラムの回転軸に対する噴射角度は端部近傍の傾斜角度を決め、湾曲半径で噴射の拡がり角度が決めることが個別にできるようになり、噴射の拡がり角度を広げながら噴射角度を立てたり、噴射の拡がり角度を抑えながら噴射角度を寝かすことが可能となり、湾曲面と傾斜面の形状を二種類以上にすることで、それぞれの噴射口からの洗浄水の噴射の回転ドラムの回転軸に対する噴射角度や、噴射の拡がり角度が異なる噴射が実現可能となる。
According to a first aspect of the present invention, there is provided a rotating drum having a first opening on the front side and having a bottomed cylindrical shape, a second opening corresponding to the first opening, and the rotating drum on the front side. A water tank installed such that the rotation axis direction is horizontal or inclined downward from the horizontal direction toward the bottom side from the bottom, a motor for controlling rotation of the rotating drum, and washing water in the water tank to the water tank A drum-type washing machine comprising: a water circulation system that circulates in the rotating drum by a circulation pump through a connected circulation path; and wherein the motor, the circulation pump, etc. are driven to perform at least one of a washing step and a rinsing step. Are provided on the front end wall of the water tank and connected to the discharge side path from the circulation pump of the circulation path, and the washing water provided in the water supply path and the back surface of the front end wall of the water tank and the rotation A plurality of outlets for discharging between the front end wall surface of the ram, and a plurality of outlets for injecting washing water into the rotary drum from between the front end wall back surface of the water tank and the front end wall surface of the rotary drum; The discharge port is opened in a predetermined circumferential range toward the substantially rotation center side of the rotating drum 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 front end wall of the water tank A back surface of the second opening has a guide surface that is provided at a peripheral end of the second opening so that the washing water discharged from the discharge port is directed inward in the rotary drum through the first opening; The washing water discharged from the discharge port flows along the back surface and the guide surface of the front end wall of the water tank and is jetted from the spray port. The shape of a plurality of guide surfaces is composed of two or more types, and the guide At least one of the surfaces consists of a curved surface and an inclined surface With a drum washer, wherein, injection angle and relative to the axis of rotation of the rotary drum of the washing water injected from each injection opening, spreading angle of injection is different injection becomes feasible, low capacity and high capacity It is possible to set the optimum spray angle and spread angle for each of the cleaning objects at the same time, and at the same time when the cleaning object at the start of cleaning is bulky without containing cleaning liquid, Even when clogged in the circumferential direction, by performing an injection having a large spread from the other injection port toward the vicinity of the first opening of the rotating drum, reducing the volume by wetting the cleaning object in the vicinity of the injection port early, It is possible to eliminate blockage in the vicinity of one of the injection ports due to the cleaning object, and further, the expansion from the one injection port toward the center axis direction of the rotating drum is small and directed toward the back of the rotating drum. By spraying, the cleaning object in the back part from the center of the rotating drum, which is difficult to get wet with the jet having a large spread from the other injection port, is also wetted early, increasing the effect of cleaning water, and from the center to the back part. The volume of the washing is reduced by soaking the washing water, and the washing becomes easier to move in the rotating drum at an early stage, so that the effect of tapping is improved and cleaning is performed from the gap created by the reduction in the volume of the washing. It becomes possible to inject the whole object and synergistically enhance the cleaning effect. In addition, at least one of the guide surfaces is a drum-type washing machine characterized by comprising a curved surface and an inclined surface, so that the cleaning water can be smoothly along the inclined surface along the curved surface. In addition, the spray angle of the washing water flowing along the guide surface with respect to the rotation axis of the rotary drum determines the inclination angle near the end, and the spray spread angle can be determined individually by the curvature radius. It is possible to set the injection angle while expanding the expansion angle of the injection, or to lay down the injection angle while suppressing the expansion angle of the injection, and by using two or more shapes of the curved surface and the inclined surface, from each injection port It is possible to realize injections with different injection angles of the washing water with respect to the rotation axis of the rotating drum and different injection spread angles.

第２の発明は、特に、第１の発明の案内面は、傾斜面で構成され、前記傾斜面の傾斜角度は、二種類以上からなることを特徴とするドラム式洗浄機とすることにより、案内面に沿って流れる洗浄水の噴射の回転ドラムの回転軸に対する噴射角度が傾斜面の傾斜角度で決まると同時に、洗浄水が水槽の前端壁の裏面と案内面に沿って流れる際、前端壁の裏面と案内面の間の角度で噴射の拡がり角度が決まるため、傾斜面の傾斜角度を二種類以上にすることで、それぞれの噴射口からの洗浄水の噴射の回転ドラムの回転軸に対する噴射角度や、噴射の拡がり角度が異なる噴射が実現可能となる。 According to a second aspect of the present invention, in particular, the guide surface of the first aspect of the present invention is composed of an inclined surface, and the inclination angle of the inclined surface is composed of two or more types. When the washing water flows along the guide surface and the back surface of the front end wall of the water tank, the spray angle of the washing water flowing along the guide surface is determined by the inclination angle of the inclined surface with respect to the rotation axis of the rotating drum. Since the spray spread angle is determined by the angle between the back surface and the guide surface of the nozzle, the spray angle of the inclined surface is set to at least two types, so that the cleaning water is sprayed from the respective spray ports to the rotation shaft of the rotating drum. It is possible to realize injections with different angles and different spread angles.

第３の発明は、特に、第１の発明の案内面は、湾曲面で構成され、前記湾曲面の湾曲半径は、二種類以上からなることを特徴とするドラム式洗浄機とすることにより、案内面の湾曲面に沿って流れる洗浄水の噴射の回転ドラムの回転軸に対する噴射角度は湾曲面の端部近傍の接線角度で決まると同時に、洗浄水が水槽の前端壁の裏面と案内面に沿って流れる際、湾曲半径で噴射の拡がり角度が決まるため、湾曲面の湾曲形状を二種類以上にすることで、それぞれの噴射口からの洗浄水の噴射の回転ドラムの回転軸に対する噴射角度や、噴射の拡がり角度が異なる噴射が実現可能となる。 According to a third aspect of the invention, in particular, the guide surface of the first aspect of the invention is configured by a curved surface, and the curved radius of the curved surface is composed of two or more types. The spray angle of the cleaning water spray flowing along the curved surface of the guide surface with respect to the rotation axis of the rotating drum is determined by the tangential angle near the end of the curved surface, and at the same time, the cleaning water is applied to the back surface of the front end wall of the water tank and the guide surface. As the flow spreads along the curve, the spread angle of the spray is determined by the curved radius, so by setting the curved shape of the curved surface to two or more types, the spray angle of the washing water from each spray port to the rotational axis of the rotating drum, Thus, it is possible to realize injections with different injection spread angles.

第４の発明は、特に、第２または第３の発明の案内面の少なくとも一つは、複数の傾斜角度を持つ傾斜面からなることを特徴とするドラム式洗浄機とすることにより、特に噴射の拡がり角度を広げながら噴射角度を立てる際など、案内面で角度を急に変える際に起こる剥離を、複数の面で段階的に角度を変えることで抑えることが可能となる。
According to a fourth aspect of the invention, in particular, at least one of the guide surfaces of the second or third aspect of the invention is a drum type washing machine characterized in that it comprises an inclined surface having a plurality of inclination angles. It is possible to suppress peeling that occurs when the angle is suddenly changed on the guide surface, for example, when the injection angle is raised while increasing the spread angle, by gradually changing the angle on a plurality of surfaces.

第５の発明は、特に、第１〜４のいずれか１つの発明の案内面の回転ドラム側端部は、所定角の面取り形状としたことを特徴とするドラム式洗浄機とすることにより、面取り形状は、洗浄物が案内面の端部にこすれることで起こる傷みを低減するとともに、案内面側の面取り角度により、案内面に沿って流れてきた洗浄水が案内面からはなれる際に決まる噴射角度が決定される。
According to a fifth aspect of the present invention, in particular, the drum-type washing machine is characterized in that the end of the guide surface of the rotating drum side of the guide surface according to any one of the first to fourth aspects has a predetermined chamfered shape. The chamfered shape reduces damage caused when the cleaning object is rubbed against the end of the guide surface, and is determined when the cleaning water flowing along the guide surface is separated from the guide surface by the chamfer angle on the guide surface side. The injection angle is determined.

第６の発明は、特に、第１〜４のいずれか１つの発明の案内面の回転ドラム側端部は、所定半径の丸み形状としたことを特徴とするドラム式洗浄機とすることにより、丸み形状は、洗浄物が案内面の端部にこすれることで起こる傷みを低減するとともに、案内面から丸み形状に沿って流れてきた洗浄水が丸み形状から剥離する際の接線方向の角度に噴射角度が決定される。
According to a sixth aspect of the invention, in particular, the drum-type washing machine is characterized in that the end of the guide drum according to any one of the first to fourth aspects has a rounded shape with a predetermined radius. The round shape reduces the damage caused by the cleaning object being rubbed against the end of the guide surface, and the cleaning water that flows along the round shape from the guide surface is sprayed at a tangential angle when peeling off the round shape. The angle is determined.

第７の発明は、特に、第１〜６のいずれか１つの発明の案内面の少なくとも一つは、複数の傾斜角を持つ傾斜面、湾曲面、回転ドラム側端部などを徐変し構成したことを特徴とするドラム式洗浄機とすることにより、案内面に沿って流れる洗浄水の噴射の回転ドラムの回転軸に対する噴射角度は端部近傍を傾斜あるいは接線角度で決め、前端壁の裏面と案内面の間の境界近傍の傾斜面の傾斜角度や徐変湾曲面の接線角度で噴射の拡がり角度が決めることが個別にできる。また回転ドラムの回転軸に対する噴射角度と噴射の拡がり角度を個別に決める際に、案内面が急激な面の角度の変化となる場合、間をつなぐ角度の面を追加することで洗浄水の流れの剥離を抑えることができるため、安定した所定の噴射が実現可能となる。 In the seventh invention, in particular, at least one of the guide surfaces of any one of the first to sixth inventions is configured by gradually changing an inclined surface having a plurality of inclination angles, a curved surface, a rotating drum side end portion, and the like. By adopting the drum type washing machine characterized by the above, the spray angle of the washing water flowing along the guide surface with respect to the rotation axis of the rotating drum is determined by the inclination or tangential angle in the vicinity of the end, and the back surface of the front end wall The spray spread angle can be individually determined by the inclination angle of the inclined surface near the boundary between the guide surface and the tangent angle of the gradually changing curved surface. In addition, when the injection angle and the expansion angle of the injection are individually determined for the rotation axis of the rotating drum, if the guide surface changes suddenly, the flow of cleaning water can be increased by adding a surface with an angle between them. Therefore, stable predetermined injection can be realized.

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）
図１は、本発明の実施の形態１におけるドラム式洗浄機の概略構造を示す断面図、図２（ａ）は、同ドラム式洗浄機に用いた循環ポンプの断面図、図２（ｂ）は、同ドラム式洗浄機に用いた循環ポンプの側面図、図３（ａ）は、同ドラム式洗浄機の水槽の要部斜視図、図３（ｂ）は、同ドラム式洗浄機の水槽の前面壁を内方より見た平面図、図４は、同ドラム式洗浄機の水循環経路の導水路近傍の断面図、図５（ａ）は、同ドラム式洗浄機の水循環経路の吐出口近傍の断面図、図５（ｂ）は、同ドラム式洗浄機の水循環経路の他の吐出口近傍の断面図、図６は、同ドラム式洗浄機の洗浄水の噴射の状態を示す正面図を示すものである。 (Embodiment 1)
FIG. 1 is a cross-sectional view showing a schematic structure of a drum type cleaning machine in Embodiment 1 of the present invention, FIG. 2 (a) is a cross-sectional view of a circulation pump used in the drum type cleaning machine, and FIG. 2 (b). Fig. 3A is a side view of a circulation pump used in the drum type washing machine, Fig. 3A is a perspective view of a main part of a water tank of the drum type washing machine, and Fig. 3B is a water tank of the drum type washing machine. FIG. 4 is a sectional view of the vicinity of the water conduit of the water circulation path of the drum type washing machine, and FIG. 5A is a discharge port of the water circulation path of the drum type washing machine. FIG. 5B is a sectional view of the vicinity of another outlet of the water circulation path of the drum type washer, and FIG. 6 is a front view showing a state of jetting of the washing water of the drum type washer. Is shown.

本実施の形態１のドラム式洗浄機は、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浄工程、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浄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。また、上記に併せ、洗浄準備工程時、洗浄工程時、すすぎ工程時など必要に応じ、水循環系１６にて水槽３内の洗浄水を循環させて洗剤の早期溶け込みや偏りの防止、洗浄やすすぎの機能向上を図る機能も有している。 The drum type cleaning machine of the first embodiment automatically controls at least the cleaning process, the rinsing process, and the dehydration 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 washing and drying machine having a function of performing a process and a drying process is configured. However, the drying system 9 can be omitted. In addition to the above, the cleaning water in the water tank 3 is circulated in the water circulation system 16 as necessary at the time of the cleaning preparation process, the cleaning process, the rinsing process, etc. It also has a function to improve the function.

なお、給水系７は電磁弁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。排水系８は排水弁１９の開閉によって洗浄工程終了時、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排水できるようになっている。また、循環系１６は水槽３内の洗濯水を循環ポンプ２０により吸い込み水槽３内に戻すことを繰り返す。 Note that the water supply system 7 can supply water in a timely manner as indicated by solid arrows by opening and closing the electromagnetic valve, and the water supply can be used to supply the detergent in the detergent container into the water tank 3 in a timely manner. The drainage system 8 can be drained as indicated by a one-dot chain line arrow when necessary, such as at the end of the washing process or at the end of the rinsing process, by opening and closing the drain valve 19. The circulation system 16 repeatedly sucks the washing water in the water tank 3 by the circulation pump 20 and returns it to the water tank 3.

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、洗浄、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 cleaning, dehydration, and drying.

なお、洗濯機本体２の正面側には本体開口２ｂが設けられ、水槽３の正面側に設けた第２の開口１３および回転ドラム４の正面側に設けた第１の開口５４を介して回転ドラム４内に洗濯物を出し入れできるように構成している。本体開口２ｂ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。 A main body opening 2 b is provided on the front side of the washing machine main body 2, and is rotated through a second opening 13 provided on the front side of the water tank 3 and a first opening 54 provided on the front side of the rotary drum 4. The laundry can be taken in and out of the drum 4. An opening / closing door 5 is provided in the main body opening 2b, so that the opening 13 of the water tank 3 is sealed and opened via a sealing material 14 attached to the rim of the opening.

なお、回転ドラム４の駆動は、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前記回転ドラム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、洗浄工程または、洗浄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、洗濯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、洗浄、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。 The driving of the rotating drum 4 is lifted by the forward / reverse arc rotation driving mode in which the rotating drum 4 repeats the sudden forward arc rotation and the sudden reverse arc rotation exceeding 90 degrees and less than 180 degrees alternately and the rotation of the rotating drum 4. 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 where the weight of the laundry falls is reversed forward and backward, and a washing step or a washing step; In the rinsing step, the forward / reverse arc rotation drive mode and the forward / reverse continuous rotation drive mode are alternately executed. 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 occurs due to 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. In particular, the laundry is sufficiently swollen and loosened, and can be given a particularly high unraveling action to the laundry in a slippery state, and the mechanical performance can be exerted on the laundry, so that the washing performance can be enhanced. 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 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, since the entanglement between the laundry caused by the progress of the washing and rinsing process can be suppressed due to the high unraveling action, effective tapping washing in the forward and reverse arc rotation mode is continuously executed, and the washing effect and 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浄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 and reverse arc rotation drive mode, the two different behaviors of washing and rinsing laundry in 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 unevenness move continuously, given an effective washing behavior for uniform and strong stain.

循環ポンプ２０は、台板２ａに固定し、水循環経路１６の循環ポンプ２０からの吐出側経路１６ｂは、水槽３の開口１３が位置する洗濯機本体２の前方に向けて延びたものとしている。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。 The circulation pump 20 is fixed to the base plate 2a, and the discharge side path 16b from the circulation pump 20 of the water circulation path 16 extends toward the front of the washing machine body 2 where the opening 13 of the water tank 3 is located. Specifically, as shown in FIG. 2, in the circulation pump 20, a resin-made pump casing 20b containing an impeller 20a is applied to a bearing partition 20d1 at the opening side of the motor casing 20d of the circulation motor 20c. And the impeller 20a is directly connected to the motor shaft 20e, and this is fitted to a mounting seat 35 made of resin.

水槽３の前面壁３ｈの下半分の部分には、略Ｙ字状に形成され前方に膨出した膨出部３ａが形成され、膨出部３ａと外形が略同一形状のカバー５５が、内方より、パッキン５５ａを間に挟んで、ネジの締結などにより取り付けられることで、導水路５５ｂを形成している。 The lower half of the front wall 3h of the water tank 3 is formed with a bulging portion 3a formed in a substantially Y shape and bulging forward, and a cover 55 having substantially the same outer shape as the bulging portion 3a On the other hand, the water guide passage 55b is formed by attaching the packing 55a with the screws 55a between them.

膨出部３ａの下端部には、横方向に延びた連結部５１の一端が接続され、連結部５１の他端は、水循環経路１６の吐出側経路１６ｂが接続されている。また、略Ｙ字状に形成されたカバー５５のそれぞれの上端部分は、パッキン５５ａを含めたシール構成の無い切欠き部５５ｃが形成され、それによって、膨出部３ａとカバー５５とで略Ｙ字状に分岐して形成された導水路５５ｂのそれぞれの上端部分には、切欠き部５５ｃとこれに対応する水槽３の前端壁３ｈの裏面との間で周方向域に広がった開口を有する吐出口５５ｄが形成されている。 One end of a connecting portion 51 extending in the lateral direction is connected to the lower end portion of the bulging portion 3a, and the discharge side passage 16b of the water circulation passage 16 is connected to the other end of the connecting portion 51. Further, each upper end portion of the cover 55 formed in a substantially Y-shape is formed with a notch portion 55c having no sealing structure including the packing 55a, so that the bulging portion 3a and the cover 55 are approximately Y. Each of the upper ends of the water conduits 55 b formed by branching in a letter shape has an opening extending in the circumferential direction region between the notch 55 c and the back surface of the front end wall 3 h of the water tank 3 corresponding thereto. A discharge port 55d is formed.

循環ポンプ２０により加圧された洗濯水は、水循環経路１６の吐出側経路１６ｂを介して連結部５１より導水路５５ｂに流入し、吐出口５５ｄより水槽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。吐出口５５ｄは、水槽３の前端壁３ｈの裏面において図５（ａ）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の前端壁３ｈおよび回転ドラム４の前端壁４ｂ間の流路５２における環状の噴射口５３に向かって開口しているので、吐出口５５ｄ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、具体的には噴射口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。 Washing water pressurized by the circulation pump 20 flows into the water conduit 55b from the connecting part 51 via the discharge side path 16b of the water circulation path 16, and corresponds to the back surface of the front end wall 3h of the water tank 3 from the discharge port 55d. Washing water is sprayed between the rotating drum 4 and the front end wall 4b of the rotating drum 4 and discharged into the rotating drum 4 through a flow path 52 formed therebetween. As shown in FIG. 5A, the discharge port 55 d is formed on the back surface of the front end wall 3 h of the water tank 3, specifically, the rotation center direction of the rotary drum 4, specifically, the front end wall 3 h of the water tank 3 and the front end wall 4 b of the rotary drum 4. Since the opening is directed toward the annular injection port 53 in the channel 52 between them, the washing water sprayed from the discharge port 55d is directed to the rotation center side of the rotary drum 4, specifically to the injection port 53. Thus, the water can be efficiently discharged in the radial direction to the inner rotation area of the rotary drum 4, and the washing water can be efficiently supplied regardless of the amount of laundry.

特に、水槽３の前端壁３ｈは吐出口５５ｄ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側に向け傾斜した案内面５６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５（ａ）に示すように、傾斜面３ｈ１から案内面５６に沿わせて、噴射口５３から回転ドラム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。 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 discharge port 55d toward the inner periphery, and the rotating drum 4 from the inclined surface 3h1 to the inner periphery. By having the guide surface 56 inclined toward the opening 54 side, as shown in FIG. 5A, the washing water sprayed to the flow path 52 is made to extend along the guide surface 56 from the inclined surface 3h1. Since it is discharged toward the back side of the rotating drum 4 through the opening 54 of the rotating drum 4 from the injection port 53, the supply efficiency of the washing water to the laundry can be improved.

ここで、図５（ａ）、（ｂ）に示すように、複数の吐出口５５ｄに対し、それぞれ傾斜角度の異なる案内面５６、５７を設ける構成としている。例えば、図５（ａ）に示すように、分岐した導水路５５ｂの正面から見て左側の吐出口５５ｄ（図３（ｂ）における右側）に対応する案内面５６の傾斜角度をαとし、また、図５（ｂ）に示すように、導水路５５ｂの正面から見て右側の吐出口５５ｄ（図３（ｂ）における左側）に対応する案内面５７の傾斜角度をβとして、α＞βとすることで、図６に示すように、正面から見て左側の噴射口５３からの洗濯水（図５（ａ）に示す矢印ａ）は、シャワー形状Ａのように比較的上方向に噴射し、一方、正面から見て右側の噴射口５３からの洗濯水（図５（ｂ）に示す矢印ｂ）は、シャワー形状Ｂのように、シャワー形状Ａよりも下方向に向けて噴射することとなる。すなわち、それぞれの吐出口５５ｄから噴射された洗濯水は、傾斜角度の異な
る案内面５６、５７に沿って流れ、噴射口５３から第１の開口５４を介して回転ドラム４内に噴射されるため、回転ドラム４の回転軸に対する噴射角度の異なる噴射を実現できる。 Here, as shown in FIGS. 5A and 5B, the guide surfaces 56 and 57 having different inclination angles are provided for the plurality of discharge ports 55d, respectively. For example, as shown in FIG. 5A, the inclination angle of the guide surface 56 corresponding to the left outlet 55d (right side in FIG. 3B) when viewed from the front of the branched water conduit 55b is α, As shown in FIG. 5 (b), when the inclination angle of the guide surface 57 corresponding to the right discharge port 55d (left side in FIG. 3 (b)) when viewed from the front of the water conduit 55b is β, α> β Thus, as shown in FIG. 6, the washing water from the left-side injection port 53 as viewed from the front (arrow a shown in FIG. 5A) is injected relatively upward like the shower shape A. On the other hand, the washing water (arrow b shown in FIG. 5 (b)) from the right injection port 53 as viewed from the front is jetted downward from the shower shape A like the shower shape B. Become. That is, the wash water sprayed from the respective discharge ports 55d flows along the guide surfaces 56 and 57 having different inclination angles, and is sprayed from the spray port 53 into the rotary drum 4 through the first opening 54. Thus, it is possible to realize injection with different injection angles with respect to the rotation axis of the rotary drum 4.

また、傾斜角度は、噴射の拡がりにも影響する。傾斜角度が小さい場合、傾斜面３ｈ１から案内面５７に角度が変化する近傍で、傾斜面３ｈ１に沿って流れてきた洗濯水が案内面５７で急激に角度が変わるため、案内面５７に衝突する状態となる。この状態では、案内面５７に沿う流れとともに、周方向への拡がりが発生し、拡がりを有した噴射となる。すなわち、図６に示すように、傾斜角度がαである左側の噴射口５３から噴射する洗濯水のシャワー形状Ａに対し、傾斜角度がβ（上記のように、α＞βの関係を有する）である右側の噴射口５３から噴射する洗濯水のシャワー形状Ｂの方が、拡がりを有した噴射となっている。発明者らの試験結果では、傾斜角が１２０度付近までは、大きく拡がり拡散した噴射となり、１３０度以上では、拡がりの小さい膜状の噴射となった。 The tilt angle also affects the spread of the injection. When the angle of inclination is small, the wash water flowing along the inclined surface 3h1 changes abruptly at the guide surface 57 in the vicinity where the angle changes from the inclined surface 3h1 to the guide surface 57, and thus collides with the guide surface 57. It becomes a state. In this state, along with the flow along the guide surface 57, the expansion in the circumferential direction occurs, and the injection has the expansion. That is, as shown in FIG. 6, with respect to the shower shape A of the washing water sprayed from the left jet port 53 whose tilt angle is α, the tilt angle is β (having a relationship of α> β as described above). The shower shape B of the washing water sprayed from the right spray port 53 is a spray having a spread. According to the test results of the inventors, the spray was greatly spread and diffused up to an inclination angle of about 120 degrees, and the film-like jet with a small spread was obtained at 130 degrees or more.

上記の構成により、噴射口５３からの洗濯水の回転ドラム４の回転軸に対する噴射角度を異ならせるとともに、異なる拡がりとすることで、低容量や高容量の洗濯物のそれぞれに対応した最適な噴射角度を設けることが可能となる。 With the above configuration, the spray angle from the spray port 53 with respect to the rotation axis of the rotating drum 4 of the washing water is made different, and by making the spread different, the optimum spray corresponding to each of the low-capacity and high-capacity laundry An angle can be provided.

例えば、洗浄開始時の洗濯物が洗浄液を含んでいない状態でかさばっている際に、図６に示す左側の噴射口５３近傍が洗濯物によって周方向に塞がれた場合でも、右側の噴射口５３から回転ドラム４の第１の開口５４付近に向けて大きな拡がりを有する噴射を行い、噴射口５３近傍の洗濯物を早期に濡らし体積を減らすことで、洗濯物による左側の噴射口５３近傍の塞ぎを解消することができる。 For example, when the laundry at the start of washing is bulky without containing the cleaning liquid, even if the vicinity of the left injection port 53 shown in FIG. 6 is closed in the circumferential direction by the laundry, the right injection port By performing spraying having a large spread from 53 to the vicinity of the first opening 54 of the rotary drum 4, the laundry in the vicinity of the spraying port 53 is wetted early, and the volume is reduced. The blockage can be eliminated.

また、図６に示す左側の噴射口５３からは回転ドラム４の中心軸方向に向かって拡がりが小さく回転ドラム４の奥方向に向けた噴射を行うことで、右側の噴射口５３からの大きな拡がりを有する噴射では濡れにくい回転ドラム４の中心付近から奥部分の洗濯物も早期に濡らし、洗濯水の効果を高めるとともに、中心付近から奥部分の洗濯物の体積を洗濯水を染み込ませることで減らし、回転ドラム４内で洗濯物が早期に動きやすくなるので、叩き洗いの効果も向上するとともに、洗濯物の体積が減ることによりできた隙間から洗濯物全体への噴射が可能となり相乗的に洗浄効果を高めることが可能となる。 Further, from the left injection port 53 shown in FIG. 6, the expansion is small toward the center axis direction of the rotating drum 4, and the injection toward the back direction of the rotating drum 4 is performed, so that the large expansion from the right injection port 53 is performed. The wet part of the laundry from the center of the rotating drum 4 that is difficult to get wet by the jet having a wetness is also wetted at an early stage to increase the effect of the washing water, and the volume of the laundry at the back part is reduced by soaking the washing water from the vicinity of the center. Since the laundry easily moves in the rotating drum 4 at an early stage, the effect of tapping is improved, and the laundry can be sprayed from the gap formed by reducing the volume of the laundry to synergistically wash. The effect can be increased.

以上の効果により、回転ドラム４内の洗濯物にその多少にかかわらず洗浄液を有効に働かせさられ、また吐出口５５ｄ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い、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。洗濯水の噴射効果は、正逆連続回転駆動モードで上下が入れ替わる洗濯物の挙動、正逆弧回転駆動モード時の左右が入れ替わる洗濯物の挙動との組合せでより高められる。 Due to the above-described effects, the washing liquid is effectively applied to the laundry in the rotating drum 4 regardless of the amount thereof, and the laundry is caught because the discharge port 55d is not in contact with the laundry in the rotating drum 4. Therefore, it is possible to prevent the behavior necessary for washing, rinsing, drying, etc. from being disturbed, and to prevent the laundry from being damaged or torn, and the appearance is not impaired. The washing water injection effect is further enhanced by a combination of the behavior of the laundry that is switched up and down in the forward / reverse continuous rotation drive mode and the behavior of the laundry that is switched between the left and right in the forward / reverse arc rotation drive mode.

なお、本実施の形態１では、吐出口５５ｄは左右の２箇所としたが、３箇所以上としても、同等の効果を有することは言うまでも無い。 In the first embodiment, the discharge ports 55d are provided at two places on the left and right, but it goes without saying that the same effect can be obtained even when there are three or more places.

（実施の形態２）
図７（ａ）は、本発明の実施の形態２におけるドラム式洗濯機の水循環経路の吐出口近傍の断面図、図７（ｂ）は、同ドラム式洗濯機の水循環経路の他の吐出口近傍の断面図を示すものである。実施の形態１と同一構成については、同一符号を付し、その説明を省略する。 (Embodiment 2)
7A is a cross-sectional view of the vicinity of the discharge port of the water circulation path of the drum type washing machine in Embodiment 2 of the present invention, and FIG. 7B is another discharge port of the water circulation path of the drum type washing machine. The cross-sectional view of the vicinity is shown. About the same structure as Embodiment 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

図７（ａ）、（ｂ）に示すように、案内面５８、５９は湾曲形状とし、左右の吐出口５
５ｄに対し、それぞれ湾曲半径の異なる案内面５８、５９としている。例えば、図７（ａ）に示すように、分岐した導水路５５ｂの正面から見て左側の吐出口５５ｄ（図３（ｂ）における右側）に対応する案内面５８の湾曲半径をγとし、また、図７（ｂ）に示すように、導水路５５ｂの正面から見て右側の吐出口５５ｄ（図３（ｂ）における左側）に対応する案内面５９の湾曲半径をδとして、γ＞δとすることで、図６に示すように、正面から見て左側の噴射口５３からの洗濯水（図７（ａ）に示す矢印ｃ）は、シャワー形状Ａのように比較的上方向に噴射し、一方、正面から見て右側の噴射口５３からの洗濯水（図７（ｂ）に示す矢印ｄ）は、シャワー形状Ｂのように、シャワー形状Ａよりも下方向に向けて噴射することとなる。すなわち、それぞれの吐出口５５ｄから噴射された洗濯水は、湾曲半径の異なる案内面５８、５９に沿って流れ、噴射口５３から第１の開口５４を介して回転ドラム４内に噴射されるため、回転ドラム４の回転軸に対する噴射角度の異なる噴射を実現できる。 As shown in FIGS. 7A and 7B, the guide surfaces 58 and 59 are curved, and the left and right discharge ports 5 are formed.
For 5d, the guide surfaces 58 and 59 have different curvature radii. For example, as shown in FIG. 7A, the curvature radius of the guide surface 58 corresponding to the discharge port 55d on the left side (right side in FIG. 3B) when viewed from the front of the branched water conduit 55b is γ, As shown in FIG. 7B, γ> δ, where δ is the curvature radius of the guide surface 59 corresponding to the right outlet 55d (left side in FIG. 3B) when viewed from the front of the water conduit 55b. Thus, as shown in FIG. 6, the washing water (arrow c shown in FIG. 7A) from the left injection port 53 as viewed from the front is injected relatively upward like the shower shape A. On the other hand, the washing water from the right injection port 53 as viewed from the front (arrow d shown in FIG. 7 (b)) is injected downward from the shower shape A like the shower shape B. Become. That is, the wash water sprayed from the respective discharge ports 55d flows along the guide surfaces 58 and 59 having different curvature radii, and is sprayed from the spray port 53 into the rotary drum 4 through the first opening 54. Thus, it is possible to realize injection with different injection angles with respect to the rotation axis of the rotary drum 4.

また、湾曲半径は、噴射の拡がりにも影響する。湾曲半径が小さい場合、傾斜面３ｈ１から案内面５９に変化する近傍で、傾斜面３ｈ１に沿って流れてきた洗濯水が案内面５９の湾曲で急激に角度が変わるため、案内面５９に衝突する状態となる。この状態では、案内面５９に沿う流れとともに、周方向への拡がりが発生し、拡がりを有した噴射となる。すなわち、図６に示すように、湾曲半径がγである左側の噴射口５３から噴射する洗濯水のシャワー形状Ａに対し、傾斜角度がδ（上記のように、γ＞δの関係を有する）である右側の噴射口５３から噴射する洗濯水のシャワー形状Ｂの方が、拡がりを有した噴射となっている。 The radius of curvature also affects the spread of injection. When the radius of curvature is small, the washing water flowing along the inclined surface 3h1 suddenly changes its angle due to the curvature of the guide surface 59 in the vicinity of the change from the inclined surface 3h1 to the guide surface 59, so that it collides with the guide surface 59. It becomes a state. In this state, along with the flow along the guide surface 59, the circumferential expansion occurs, resulting in an injection having an expansion. That is, as shown in FIG. 6, the inclination angle is δ (having a relationship of γ> δ as described above) with respect to the shower shape A of the washing water sprayed from the left jet port 53 whose curvature radius is γ. The shower shape B of the washing water sprayed from the right spray port 53 is a spray having a spread.

すなわち、本実施の形態２においても、上記実施の形態１と同等の作用効果を有することができる。 In other words, the second embodiment can have the same effects as those of the first embodiment.

（実施の形態３）
図８は、本発明の実施の形態３におけるドラム式洗濯機の水循環経路の吐出口近傍の断面図を示すものである。実施の形態１と同一構成については、同一符号を付し、その説明を省略する。 (Embodiment 3)
FIG. 8 shows a cross-sectional view of the vicinity of the discharge port of the water circulation path of the drum type washing machine in Embodiment 3 of the present invention. About the same structure as Embodiment 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

図８に示すように、傾斜面３ｈ１と傾斜角度の異なる案内面６１とを湾曲面６０で接続するように構成している。これにより、吐出口５５ｄから吐出した洗濯水は、傾斜面３ｈ１から湾曲面６０を介して傾斜角度の異なる案内面６１へスムーズに流れるため、噴射口５３からの噴射が、より安定した噴射となることを実現することができる。 As shown in FIG. 8, the inclined surface 3 h 1 and the guide surface 61 having different inclination angles are connected by a curved surface 60. Thereby, since the wash water discharged from the discharge port 55d smoothly flows from the inclined surface 3h1 to the guide surface 61 having a different inclination angle through the curved surface 60, the injection from the injection port 53 becomes a more stable injection. Can be realized.

また、噴射の回転ドラム４の回転軸に対する噴射角度は案内面６１の傾斜角度で決め、湾曲面６０の湾曲半径で噴射の拡がり角度が決めることが個別にできるようになり、噴射の拡がり角度を広げながら噴射角度を立てたり、噴射の拡がり角度を抑えながら噴射角度を寝かすことが可能となり、湾曲面６０と案内面６１の形状を二種類以上にすることで、それぞれの噴射口からの洗濯水の噴射の回転ドラムの回転軸に対する噴射角度や、噴射の拡がり角度が異なる噴射が実現可能となる。 Further, the injection angle of the injection with respect to the rotation axis of the rotary drum 4 is determined by the inclination angle of the guide surface 61, and the injection expansion angle can be determined individually by the bending radius of the curved surface 60, and the injection expansion angle can be determined. It is possible to raise the injection angle while expanding, or to lay down the injection angle while suppressing the expansion angle of the injection. By making the curved surface 60 and the guide surface 61 into two or more shapes, the washing water from each injection port Thus, it is possible to realize injections with different injection angles with respect to the rotation axis of the rotary drum and different injection spread angles.

（実施の形態４）
図９は、本発明の実施の形態４におけるドラム式洗濯機の水循環経路の吐出口近傍の断面図を示すものである。実施の形態１と同一構成については、同一符号を付し、その説明を省略する。 (Embodiment 4)
FIG. 9 shows a cross-sectional view of the vicinity of the discharge port of the water circulation path of the drum type washing machine in the fourth embodiment of the present invention. About the same structure as Embodiment 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

図９に示すように、本実施の形態４では、案内面を複数の傾斜角度を持つ面で構成している。 As shown in FIG. 9, in the fourth embodiment, the guide surface is configured by surfaces having a plurality of inclination angles.

図９において、傾斜面３ｈ１から湾曲面６０を介して案内面６２に変化する近傍では傾斜角εを小さくとり、傾斜面３ｈ１に沿って流れてきた洗濯水を案内面６２で急激に角度を変え、案内面６２に衝突させ洗濯水の流れを拡げ、傾斜角εに比べ大きい傾斜角ζの案内面６３で回転ドラム４の回転軸に対する噴射角度が大きい噴射を実現する。傾斜角εと傾斜角ζの差が大きく、洗濯水の流れが案内面６３に対し剥離が生じ噴射が不安定な場合は、さらに中間の傾斜角を有した面を間に追加してもよい。これらの形状は、案内面６２、６３近傍の偏肉を抑えることもできる。回転ドラム４の回転軸に対する噴射角度が大きく且つ拡がりを持った噴射を実現する際などに、案内面を複数の傾斜角度を持つ面で構成してもよい。 In FIG. 9, the inclination angle ε is reduced in the vicinity of the change from the inclined surface 3 h 1 to the guide surface 62 through the curved surface 60, and the angle of washing water flowing along the inclined surface 3 h 1 is changed abruptly at the guide surface 62. Then, the flow of the washing water is made to collide with the guide surface 62, and injection with a large injection angle with respect to the rotation axis of the rotary drum 4 is realized by the guide surface 63 having an inclination angle ζ larger than the inclination angle ε. When the difference between the inclination angle ε and the inclination angle ζ is large and the flow of the washing water is separated from the guide surface 63 and the injection is unstable, a surface having an intermediate inclination angle may be added between them. . These shapes can also suppress uneven thickness in the vicinity of the guide surfaces 62 and 63. The guide surface may be constituted by a surface having a plurality of inclination angles when the injection angle with respect to the rotation axis of the rotating drum 4 is large and the injection is widened.

（実施の形態５）
図１０（ａ）は、本発明の実施の形態５におけるドラム式洗濯機の水循環経路の吐出口近傍の拡大断面図、図１０（ｂ）は、同ドラム式洗濯機の水循環経路の他の吐出口近傍の拡大断面図を示すものである。実施の形態１と同一構成については、同一符号を付し、その説明を省略する。 (Embodiment 5)
FIG. 10 (a) is an enlarged cross-sectional view of the vicinity of the discharge port of the water circulation path of the drum type washing machine in Embodiment 5 of the present invention, and FIG. 10 (b) is another discharge of the water circulation path of the drum type washing machine. The expanded sectional view of the exit vicinity is shown. About the same structure as Embodiment 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

図１０（ａ）に示すように、洗濯水の回転ドラム４の回転軸に対する噴射角度は、開口５４近傍の案内面５６の、延長線上あるいは接線方向で決まることから、前端壁３ｈの裏面の端部は所定角の面取り形状６５にすることで噴射角度を変えてもよく、また面取り形状６５により洗濯物を傷めたり、破れたりするようなことを防止する効果も得られる。同様に図９（ｂ）に示すように面取り形状６５を丸み形状６６としてもよい。 As shown in FIG. 10 (a), the spray angle with respect to the rotation axis of the rotating drum 4 of the washing water is determined by the extension line or the tangential direction of the guide surface 56 in the vicinity of the opening 54. The portion may have a chamfered shape 65 with a predetermined angle to change the spray angle, and the chamfered shape 65 can also prevent the laundry from being damaged or torn. Similarly, the chamfered shape 65 may be a rounded shape 66 as shown in FIG.

（実施の形態６）
図１１は、本発明の実施の形態６におけるドラム式洗濯機の水循環経路の吐出口近傍の断面図を示すものである。実施の形態１と同一構成については、同一符号を付し、その説明を省略する。 (Embodiment 6)
FIG. 11 shows a cross-sectional view of the vicinity of the discharge port of the water circulation path of the drum type washing machine in the sixth embodiment of the present invention. About the same structure as Embodiment 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

図１１に示すように、噴射の拡がり、噴射角度、噴射の安定性、洗濯物の傷み、破れ、偏肉を考慮した、複数の傾斜角を持つ傾斜面６４、６４ａや湾曲面６０、６０ａ、６０ｂ、６０ｃ、端部などを徐変し構成している。 As shown in FIG. 11, the inclined surfaces 64 and 64a and the curved surfaces 60 and 60a having a plurality of inclination angles in consideration of the spread of the injection, the injection angle, the stability of the injection, the damage, tearing, and uneven thickness of the laundry. 60b, 60c, end portions and the like are gradually changed.

本発明にかかるドラム式洗濯機は、低容量や高容量の洗濯物それぞれに最適な噴射角度や拡がり角度を設けることが可能になり、洗浄効果を高めることが可能となるので、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等として有用である。 The drum type washing machine according to the present invention can provide an optimum spray angle and spread angle for each of low-capacity and high-capacity laundry, and can improve the cleaning effect. The rotating drum formed in the above is installed in the water tank so that the rotation axis direction is horizontal or inclined downward from the horizontal direction from the opening front side to the bottom rear side, and the rotation drum is driven to rotate. Thus, the present invention is useful as a drum-type washing machine for washing laundry stored in a rotating drum.

４回転ドラム
５３噴射口
５６案内面
５７案内面 4 Rotating drum 53 Injection port 56 Guide surface 57 Guide surface

Claims

正面側に第１の開口を有し有底円筒形に形成された回転ドラムと、前記第１の開口に対応して第２の開口を有するとともに前記回転ドラムを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設置する水槽と、前記回転ドラムを回転制御するモータと、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循環ポンプにより前記回転ドラム内に循環させる水循環系とを備え、前記モータ、循環ポンプ等を駆動して洗浄工程、すすぎ工程の少なくとも１つが行えるドラム式洗濯機において、前記水循環系は、前記水槽の前端壁に設けられ前記循環経路の循環ポンプからの吐出側経路が接続される導水路と、前記導水路に設けられ洗濯水を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に吐出させる複数の吐出口と、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から前記回転ドラム内に洗濯水を噴射する複数の噴射口とを設け、前記吐出口は、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に前記回転ドラムの略回転中心側に向け所定の周方向範囲で開口し、前記水槽の前端壁の裏面は、前記第２の開口の周端部に設けられ前記吐出口から吐出した洗濯水が前記第１の開口を介して前記回転ドラム内方向に向かうようにする案内面を有し、前記吐出口から吐出された洗濯水は前記水槽の前端壁の裏面と案内面に沿って流れ、前記噴射口から噴射される構成とし、複数の案内面の形状は、二種類以上からなり、前記案内面の少なくとも一つは、湾曲面と傾斜面からなることを特徴とするドラム式洗濯機。 A rotating drum having a first opening on the front side and having a bottomed cylindrical shape, and a rear surface side having a second opening corresponding to the first opening and the rotating drum from the front side to the bottom. A water tank installed so that the rotation axis direction is horizontal or inclined downward from the horizontal direction, a motor for controlling the rotation of the rotary drum, and the wash water in the water tank circulate through a circulation path connected to the water tank A drum-type washing machine having a water circulation system that circulates in the rotating drum by a pump, and that can perform at least one of a washing process and a rinsing process by driving the motor, the circulation pump, and the like. A water guide path provided on a wall to which a discharge side path from the circulation pump of the circulation path is connected, and a wash water provided in the water guide path on the rear surface of the front end wall of the water tank and a front end wall of the rotary drum A plurality of discharge ports for discharging between the surface and a plurality of injection ports for spraying wash water into the rotary drum from between the front end wall back surface of the water tank and the front end wall surface of the rotary drum, The discharge port is opened in a predetermined circumferential range between the front end wall back surface of the water tank and the front end wall surface of the rotating drum toward a substantially rotation center side of the rotating drum, and the back surface of the front end wall of the water tank is A guide surface provided at a peripheral end portion of the second opening and configured to direct wash water discharged from the discharge port toward the inside of the rotary drum through the first opening; The washed water flows along the back surface and the guide surface of the front end wall of the water tank, and is jetted from the injection port. The plurality of guide surfaces have two or more types , and at least one of the guide surfaces. One is characterized in that an inclined surface and the curved surface de Beam type washing machine.

前記傾斜面の傾斜角度は、二種類以上からな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 inclined angle of the inclined surface includes two or more kinds.

前記湾曲面の湾曲半径は、二種類以上からな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 curved surface has two or more kinds of curvature radii.

案内面の少なくとも一つは、複数の傾斜角度を持つ傾斜面からなることを特徴とする請求項２または３に記載のドラム式洗濯機。 The drum type washing machine according to claim 2 or 3 , wherein at least one of the guide surfaces comprises an inclined surface having a plurality of inclination angles .

案内面の回転ドラム側端部は、所定角の面取り形状としたことを特徴とする請求項１〜４のいずれか１項に記載のドラム式洗濯機。 The drum-type washing machine according to any one of claims 1 to 4, wherein the end portion of the guide surface on the rotating drum side has a chamfered shape with a predetermined angle .

案内面の回転ドラム側端部は、所定半径の丸み形状としたことを特徴とする請求項１〜４のいずれか１項に記載のドラム式洗濯機。 The drum-type washing machine according to any one of claims 1 to 4, wherein the end portion of the guide surface on the rotating drum side is rounded with a predetermined radius .

案内面の少なくとも一つは、複数の傾斜角を持つ傾斜面、湾曲面、回転ドラム側端部などを徐変し構成したことを特徴とする請求項１〜６のいずれか１項に記載のドラム式洗濯機。
The at least one of the guide surfaces is configured by gradually changing an inclined surface having a plurality of inclination angles, a curved surface, a rotating drum side end portion, and the like . Drum type washing machine.