JP2007082651A - Drum type washing machine - Google Patents
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- JP2007082651A JP2007082651A JP2005273337A JP2005273337A JP2007082651A JP 2007082651 A JP2007082651 A JP 2007082651A JP 2005273337 A JP2005273337 A JP 2005273337A JP 2005273337 A JP2005273337 A JP 2005273337A JP 2007082651 A JP2007082651 A JP 2007082651A
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- 238000005406 washing Methods 0.000 title claims abstract description 193
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 305
- 238000000034 method Methods 0.000 claims abstract description 127
- 230000008569 process Effects 0.000 claims abstract description 126
- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 239000003599 detergent Substances 0.000 claims description 104
- 239000006260 foam Substances 0.000 claims description 72
- 238000010079 rubber tapping Methods 0.000 claims description 24
- 238000005187 foaming Methods 0.000 claims description 7
- 230000018044 dehydration Effects 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 7
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- 239000004744 fabric Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000009991 scouring Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
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- 230000002159 abnormal effect Effects 0.000 description 1
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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- 230000007480 spreading Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
Description
本発明は、水平方向もしくは斜め方向に回転軸を有する回転ドラム内で洗濯、すすぎ、脱水等の各行程を行うドラム式洗濯機に関するものである。 The present invention relates to a drum-type washing machine that performs various processes such as washing, rinsing, and dewatering in a rotating drum having a rotating shaft in a horizontal direction or an oblique direction.
従来におけるこの種のドラム式洗濯機について以下説明する。 A conventional drum type washing machine of this type will be described below.
図１３は、回転ドラムの回転軸が水平方向であるドラム式洗濯機の断面図である。ドラム式洗濯機の筐体１０１内に、サスペンションによって支持された外槽１０２と、外槽１０２内に回転自在に支持された回転ドラム１０３を配設している。回転ドラム１０３は、駆動モータ１０４によって回転駆動される。筐体１０１の正面側に開閉自在に設けた扉体１０５を開くことにより、外槽１０２の開口部１０２ａ及び回転ドラム１０３にある開口部１０３ａを通して洗濯物を回転ドラム１０３内から出し入れすることができるようになっている（例えば、特許文献１参照）。 FIG. 13 is a cross-sectional view of a drum type washing machine in which the rotating shaft of the rotating drum is in the horizontal direction. An outer tub 102 supported by a suspension and a rotating drum 103 rotatably supported in the outer tub 102 are disposed in a casing 101 of the drum type washing machine. The rotary drum 103 is rotationally driven by a drive motor 104. By opening the door body 105 that can be opened and closed on the front side of the housing 101, the laundry can be taken in and out of the rotary drum 103 through the opening 102 a of the outer tub 102 and the opening 103 a in the rotary drum 103. (For example, refer to Patent Document 1).
このようなドラム式洗濯機における洗濯行程について説明する。扉体１０５が開かれて回転ドラム１０３内に洗濯物が投入され、さらに洗剤が投入されて運転が開始されると、まず、給水弁１０６を開き外槽１０２内に所定の水位まで給水する。その後、駆動モータ１０４により回転ドラム１０３を所定回転速度で回転駆動させると、回転ドラム１０３に収容された洗濯物は、回転ドラム１０３の内面に設けられた撹拌突起１０７に引っ掛けられて回転方向に持ち上げられて適当な高さから落下しその衝撃力で洗濯される、いわゆる叩き洗いを行う。 The washing process in such a drum type washing machine will be described. When the door body 105 is opened, laundry is put into the rotating drum 103, and a detergent is further put in to start the operation, first, the water supply valve 106 is opened and water is supplied into the outer tub 102 to a predetermined water level. Thereafter, when the rotary drum 103 is driven to rotate at a predetermined rotational speed by the drive motor 104, the laundry stored in the rotary drum 103 is hooked on the stirring protrusion 107 provided on the inner surface of the rotary drum 103 and lifted in the rotation direction. Then, it is dropped from a suitable height and washed with its impact force, so-called tapping.
この洗濯行程の後、汚れた洗濯水を排水し、新たに供給した水を用いてすすぎ行程を実行し、すすぎ行程が終了すると回転ドラム１０３を高速回転させる脱水行程を行う。 After this washing process, the dirty washing water is drained, and the rinsing process is performed using newly supplied water. When the rinsing process is completed, a dehydration process is performed in which the rotating drum 103 is rotated at a high speed.
このような構成では、洗濯物が十分洗濯水を含まない状態で洗濯行程を行うので、洗浄力の不足や、洗浄ムラ、さらに一定の洗浄力を確保するには洗いに時間がかかるという課題があった。 In such a configuration, since the washing process is performed in a state where the laundry does not contain sufficient washing water, there is a problem that it takes time to wash in order to ensure insufficient washing power, uneven washing, and a certain washing power. there were.
これらの課題を解決するものとして、外槽１０２内に溜まった洗濯水を循環ポンプで吸い上げ、回転ドラム内に戻すことにより洗濯物に洗濯水を十分に給水させて洗浄力を高める技術がある（例えば、特許文献２参照）。
しかしながら、このような従来のドラム式洗濯機では、循環ポンプにより循環することができる水量は循環ポンプの大きさによって異なるため、洗濯物に洗濯水を十分に給水させるには大きな循環ポンプが必要となるが、洗濯機本体をコンパクト化するには循環ポンプも小さくせざるを得ず、そのため十分な循環水量を得ることができないという問題があった。また、循環ポンプという新たな構成が必要となってしまうため複雑な構成となり、製造コストがかかるものであった。 However, in such a conventional drum-type washing machine, the amount of water that can be circulated by the circulation pump varies depending on the size of the circulation pump, and thus a large circulation pump is required to supply the laundry with sufficient washing water. However, in order to make the washing machine main body compact, the circulation pump has to be made small, so that there is a problem that a sufficient amount of circulating water cannot be obtained. Further, since a new configuration called a circulation pump is required, the configuration becomes complicated and the manufacturing cost is high.
本発明は、上記従来の課題を解決するもので、循環ポンプ等を用いることなく外槽内の洗濯水を回転ドラム内に戻すことにより、洗浄力を向上させ、洗浄ムラを減少させることができるとともに製造コストを低く抑えるドラム式洗濯機を提供することを目的とする。 The present invention solves the above-described conventional problems, and by returning the washing water in the outer tub to the rotating drum without using a circulation pump or the like, the cleaning power can be improved and the cleaning unevenness can be reduced. At the same time, it is an object to provide a drum type washing machine that keeps the manufacturing cost low.
上記目的を達成するために、本発明のドラム式洗濯機は、筐体と、前記筐体に内包され衣類出入用の第１開口部を有する有底円筒状の外槽と、前記外槽に回転自在に内包され前記第１開口部に対応して開口する第２開口部と水平方向または水平方向から傾斜した回転軸とを有する有底円筒状の回転ドラムと、前記外槽内に給水する給水手段と、前記外槽に設けられ前記回転ドラムの回転に伴って前記外槽内を回転する洗濯水が入り込む取水口と、前記取水口と一端が連通する循環水路と、前記循環水路の他端と連通し前記回転ドラム内に洗濯水を吐出する吐出口と、洗い、すすぎ、脱水等の各行程を実行する制御手段とを備え、前記制御手段は、第１の所定回転速度で回転ドラムを回転させることにより、洗濯物を遠心力で前記回転ドラムの内周壁に張り付かせるとともに吐出口から洗濯水を吐出させる張り付き行程と、前記回転ドラムを前記第１の所定回転速度より低い第２の所定回転速度で回転させることにより、前記洗濯物を前記回転ドラムの回転により回転方向に持ち上げて適当な高さから落下させるとともに前記吐出口から前記張り付き行程より少量の洗濯水を吐出させるかまたは洗濯水を吐出させない叩き洗い行程とを実行することを特徴とするものである。 In order to achieve the above object, a drum-type washing machine of the present invention includes a housing, a cylindrical outer tub having a first opening that is included in the housing and has a first opening for entering and exiting clothes, and the outer tub. A bottomed cylindrical rotary drum having a second opening that is rotatably included and opens corresponding to the first opening, and a rotating shaft that is inclined in the horizontal direction or the horizontal direction, and supplies water into the outer tub. A water supply means; a water intake provided in the outer tub and rotating in the outer tub as the rotary drum rotates; a circulation water channel in which one end communicates with the water intake; A discharge port through which the washing water is discharged into the rotary drum, and a control means for executing each step of washing, rinsing, dehydration, etc., the control means at a first predetermined rotational speed; By rotating the laundry by centrifugal force of the rotating drum A sticking step for sticking to the peripheral wall and discharging the washing water from the discharge port, and rotating the rotating drum at a second predetermined rotational speed lower than the first predetermined rotational speed, thereby causing the laundry to move to the rotating drum. And a tapping washing process in which a smaller amount of washing water is discharged from the sticking process than the sticking process or the washing process is not performed. Is.
回転ドラムの回転に伴って回転する外槽内の洗濯水を、外槽に設けた取水口に取り込み、その取水口から取り込んだ洗濯水を吐出口から回転ドラムに吐出することにより、洗濯水を洗濯物にふりかけて循環させる。これにより洗濯水が洗濯物に含まれやすくなるため、洗浄力が向上し、洗浄ムラを減少させることができる。 The washing water in the outer tub rotating with the rotation of the rotating drum is taken into a water intake provided in the outer tub, and the washing water taken in from the water intake is discharged from the outlet to the rotating drum. Sprinkle on the laundry to circulate. As a result, since the washing water is easily contained in the laundry, the cleaning power is improved and the cleaning unevenness can be reduced.
本発明のドラム式洗濯機は、循環ポンプ等を用いることなく外槽内の洗濯水を回転ドラム内に戻すことにより、洗浄力を向上させ、洗浄ムラを減少させることができるとともに製造コストを低く抑えることができる。 The drum type washing machine of the present invention can improve washing power, reduce washing unevenness and reduce manufacturing cost by returning washing water in the outer tub into the rotating drum without using a circulation pump or the like. Can be suppressed.
第１の発明におけるドラム式洗濯機は、筐体と、前記筐体に内包され衣類出入用の第１開口部を有する有底円筒状の外槽と、前記外槽に回転自在に内包され前記第１開口部に対応して開口する第２開口部と水平方向または水平方向から傾斜した回転軸とを有する有底円筒状の回転ドラムと、前記外槽内に給水する給水手段と、前記外槽に設けられ前記回転ドラムの回転に伴って前記外槽内を回転する洗濯水が入り込む取水口と、前記取水口と一端が連通する循環水路と、前記循環水路の他端と連通し前記回転ドラム内に洗濯水を吐出する吐出口と、洗い、すすぎ、脱水等の各行程を実行する制御手段とを備え、前記制御手段は、第１の所定回転速度で回転ドラムを回転させることにより、洗濯物を遠心力で前記回転ドラムの内周壁に張り付かせるとともに吐出口から洗濯水を吐出させる張り付き行程と、前記回転ドラムを前記第１の所定回転速度より低い第２の所定回転速度で回転させることにより、前記洗濯物を前記回転ドラムの回転により回転方向に持ち上げて適当な高さから落下させるとともに前記吐出口から前記張り付き行程より少量の洗濯水を吐出させるかまたは洗濯水を吐出させない叩き洗い行程とを実行するものである。 A drum-type washing machine according to a first aspect of the present invention includes a housing, a bottomed cylindrical outer tub that is included in the housing and has a first opening for clothes in and out, and is rotatably included in the outer tub. A bottomed cylindrical rotating drum having a second opening that corresponds to the first opening and a horizontal axis or a rotating shaft that is inclined from the horizontal direction; a water supply means that supplies water into the outer tub; A water intake provided in a tub, into which washing water that rotates in the outer tub as the rotary drum rotates enters, a circulation water channel that communicates with one end of the water intake, and the other end of the circulation water channel communicate with the rotation. A discharge port for discharging washing water into the drum, and a control means for executing each process such as washing, rinsing, and dehydration, the control means by rotating the rotating drum at a first predetermined rotational speed, Whether the laundry is attached to the inner peripheral wall of the rotating drum by centrifugal force The laundry is rotated by the rotation of the rotating drum by rotating the rotating drum at a second predetermined rotation speed lower than the first predetermined rotation speed. In this case, the water is lifted in the direction and dropped from an appropriate height, and a washing water amount smaller than the sticking step is discharged from the discharge port, or a tapping washing step in which the washing water is not discharged is executed.
この構成によると、回転ドラムの回転に伴って回転する外槽内の洗濯水を、外槽に設けた取水口に取り込み、その取水口から取り込んだ洗濯水を吐出口から回転ドラムに吐出することにより、洗濯水を洗濯物にふりかけて循環させ、これにより洗濯水が洗濯物に含まれやすくなるため、洗浄力が向上し、洗浄ムラを減少させることができる。また、張り付き行程では、回転ドラムを第１の所定回転速度で回転させることにより、洗濯物を遠心力で回転ドラムの内壁に張り付かせ、泡を含む洗濯水を回転ドラムに循環させて洗濯物に浸透させることができる。さらに、叩き洗い行程では、第１の所定回転速度より低い第２の所定回転速度で回転ドラムを回転させることにより、洗濯水を張り付き行程より少ない水量を循環させるかまたは循環させずに、洗濯物を回転ドラムの内壁に張り付かせることなく回転ドラムの回転方向に持ち上げて適当な高さから落下させて洗浄する叩き洗いを行うので、洗濯水が回転ドラム内に吐出し続けることでその衝撃によって洗剤泡が充満してしまい洗剤泡がクッションとなって叩き洗いの効果が十分得られないという状況を防ぐことができる。 According to this configuration, the washing water in the outer tub rotating with the rotation of the rotating drum is taken into the water intake provided in the outer tub, and the washing water taken from the water intake is discharged from the outlet to the rotating drum. Thus, the washing water is sprinkled on the laundry and circulated, whereby the washing water is easily contained in the laundry, so that the cleaning power is improved and the unevenness in washing can be reduced. Further, in the sticking process, the laundry is stuck to the inner wall of the rotating drum by centrifugal force by rotating the rotating drum at the first predetermined rotation speed, and the washing water containing foam is circulated to the rotating drum to wash the laundry. Can penetrate. Furthermore, in the washing and washing process, the laundry is rotated without rotating or circulating the washing water less than the sticking process by rotating the rotating drum at a second predetermined rotation speed lower than the first predetermined rotation speed. Without being attached to the inner wall of the rotating drum, it is lifted in the direction of rotation of the rotating drum and dropped from an appropriate height to perform washing, so that washing water continues to be discharged into the rotating drum. It is possible to prevent a situation in which the detergent foam is filled and the detergent foam serves as a cushion and the effect of tapping is not sufficiently obtained.
第２の発明は、前記請求項１に記載の発明において、制御手段は、叩き洗い行程を第１の所定時間実行し、張り付き行程を前記第１の所定時間より短い第２の所定時間実行するものである。 According to a second aspect of the present invention, in the first aspect of the present invention, the control means executes the tapping process for a first predetermined time and executes the sticking process for a second predetermined time shorter than the first predetermined time. Is.
この構成によると、張り付き行程を実行する時間は叩き洗い行程を実行する時間より短いので、洗濯水を吐出口から吐出させたときに洗濯物や回転ドラムの内周面と当たる衝撃により生じる洗剤泡の発生量を抑えることができる。 According to this configuration, since the time for performing the sticking process is shorter than the time for performing the washing process, the detergent bubbles generated by the impact of the laundry and the inner peripheral surface of the rotating drum when the washing water is discharged from the discharge port. Can be suppressed.
第３の発明は、前記請求項１または２に記載の発明において、張り付き行程と叩き洗い行程とを所定回数または第３の所定時間経過するまで繰り返して行うものである。 According to a third aspect of the present invention, the sticking step and the tapping washing step are repeatedly performed a predetermined number of times or until a third predetermined time elapses.
この構成によると、外槽に溜まった洗濯水を回転ドラム内に循環させ洗濯物に洗濯水を浸透させる張り付き行程と、叩き洗いを行う叩き洗い行程とを繰り返し行うことができるので、洗濯物に洗濯水を十分に含ませた状態で何度も叩き洗いを行うことができ、洗浄力を向上させることができる。 According to this configuration, it is possible to repeatedly perform the sticking process in which the washing water accumulated in the outer tub is circulated in the rotating drum and the washing water is infiltrated into the laundry and the washing process in which the washing is performed. The washing can be performed many times in a state where the washing water is sufficiently contained, and the detergency can be improved.
第４の発明は、前記請求項１〜３に記載の発明において、制御手段は、第１の所定回転速度より高い第３の所定回転速度で回転ドラムを回転させることにより外槽内の洗濯水を泡立たせる泡生成行程を実行するものである。 According to a fourth aspect of the present invention, in the first to third aspects, the control means rotates the rotating drum at a third predetermined rotational speed higher than the first predetermined rotational speed, thereby washing water in the outer tub. The foam generation process is performed to make the foam.
この構成によると、泡生成行程において大量に洗剤泡を生成し、洗濯物に洗剤泡を浸透させることができるので、洗浄力を上げることができる。また、第１の所定回転速度より高い第３の所定回転速度で回転させるので、低い水位でも循環水量を確保することができる。 According to this configuration, a large amount of detergent foam can be generated in the foam generation process, and the detergent foam can be permeated into the laundry, so that the cleaning power can be increased. Moreover, since it rotates at the 3rd predetermined rotation speed higher than the 1st predetermined rotation speed, the amount of circulating water can be ensured even at a low water level.
第５の発明は、前記請求項４記載の発明において、泡生成行程における洗濯水の水位は、叩き洗い行程および張り付き行程における洗濯水の水位より低いものである。 According to a fifth aspect of the present invention, the water level in the foam generation process is lower than the water level in the tapping process and the sticking process.
この構成によると、泡生成行程における水位を低くすることにより、洗い行程初期に高濃度の洗剤泡を生成して衣類にふりかけて循環することができ、洗浄力を上げることができる。また、叩き洗い行程および張り付き行程における水位を高くすることにより、洗剤濃度が低くなり泡立ちが抑えられ、また水位が高いため、泡立ちを抑えるために回転ドラムの回転速度を泡生成行程より低くしても、十分に循環水量を得ることができる。 According to this configuration, by reducing the water level in the foam generation process, a high-concentration detergent foam can be generated at the initial stage of the washing process and sprinkled on the clothes to be circulated, thereby increasing the cleaning power. Also, by increasing the water level in the scouring process and sticking process, the detergent concentration is lowered and foaming is suppressed, and since the water level is high, the rotational speed of the rotating drum is set lower than the foaming process in order to suppress foaming. In addition, a sufficient amount of circulating water can be obtained.
第６の発明は、前記請求項４または５に記載の発明において、制御手段は、泡生成行程を叩き洗い行程および張り付き行程より前に実行するものである。 According to a sixth aspect of the present invention, in the invention according to the fourth or fifth aspect, the control means executes the bubble generation process before the scouring process and the sticking process.
この構成によると、泡生成行程において洗剤泡を発生させて洗濯物に浸透させ、その後叩き洗いを行うので、洗剤による洗浄力を上げることができる。 According to this configuration, detergent bubbles are generated in the foam generation process, penetrated into the laundry, and then washed by tapping, so that the cleaning power of the detergent can be increased.
第７の発明は、前記請求項６記載の発明において、制御手段は、泡生成行程より後であって張り付き行程より前に給水を行うことにより、張り付き行程における洗剤濃度を泡生成行程における洗剤濃度より低くしたものである。 According to a seventh aspect of the present invention, in the invention according to the sixth aspect, the control means supplies the water after the foam generation process and before the sticking process, so that the detergent concentration in the sticking process is changed to the detergent concentration in the foam generation process. It is a lower one.
この構成によると、張り付き行程における洗剤濃度が低くなり泡立ちが抑えられ、また水位が高いため、泡立ちを抑えるために回転ドラムの回転速度を泡生成行程より低くしても、十分に循環水量を得ることができる。 According to this configuration, the detergent concentration in the sticking process becomes low and foaming is suppressed, and the water level is high, so even if the rotation speed of the rotating drum is lower than the foam generation process in order to suppress foaming, a sufficient amount of circulating water is obtained. be able to.
第８の発明は、前記請求項１〜７記載の発明において、給水手段は、回転ドラムの第２開口部から前記回転ドラム内へ給水する第１の給水手段と、洗剤を収納する洗剤ケースを介して外槽内に給水する第２の給水手段とからなり、制御手段は、第１の給水手段による給水を所定時間行った後、第２の給水手段により所定水位まで給水するものである。 According to an eighth aspect of the present invention, in the first to seventh aspects of the present invention, the water supply means includes a first water supply means for supplying water into the rotary drum from the second opening of the rotary drum, and a detergent case for storing the detergent. The control means is configured to supply water to the predetermined water level by the second water supply means after performing water supply by the first water supply means for a predetermined time.
この構成によると、同じ水量を第２の給水手段のみで給水する場合に比べ、洗濯物に含まれる水量が増えるため外槽内に溜まる洗濯水の量が少量になり、外槽内に溜まる洗濯水を減らすことができる。これにより、洗剤泡を含む洗濯水の体積を減らすことができる。また、洗剤が外槽内に投入される時間が遅くなるので、洗濯水がリブに掻きあげられる時間を短くすることができ、発生する洗剤泡の量を制限することができる。 According to this configuration, compared with the case where the same amount of water is supplied only by the second water supply means, the amount of washing water collected in the outer tub is reduced because the amount of water contained in the laundry is increased, and the laundry collected in the outer tub. Can reduce water. Thereby, the volume of the washing water containing the detergent foam can be reduced. Moreover, since the time for the detergent to be put into the outer tub is delayed, the time for the washing water to be scraped up to the rib can be shortened, and the amount of detergent foam generated can be limited.
第９の発明は、前記請求項１〜８記載の発明において、制御手段は、回転ドラムを回転させて洗剤を溶解する洗剤溶解行程を、泡生成行程より前に実行するものである。 According to a ninth aspect of the present invention, in the first to eighth aspects of the present invention, the control means executes a detergent dissolving step of rotating the rotating drum to dissolve the detergent before the foam generating step.
この構成によると、洗剤が洗濯水に溶けずに洗濯物に付着するのを防ぐことができ、また洗濯水に洗濯物の汚れが溶解する前に洗剤を溶解させるので、汚れが洗濯水に溶解することにより泡生成行程において洗剤泡の発生が抑えられるのを防ぐことができる。 According to this configuration, the detergent can be prevented from dissolving in the washing water and adhering to the laundry, and the detergent is dissolved before the washing stain is dissolved in the washing water, so that the dirt is dissolved in the washing water. By doing, it can prevent generation | occurrence | production of detergent foam in the foam production | generation process.
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、本発明の第１の実施の形態におけるドラム式洗濯機の断面図を示している。図１において、ドラム式洗濯機の筐体１内には、有底円筒状の外槽６が図示しないサスペンション構造によって筐体１の正面側から背面側に向かって下向きに傾斜した状態で支持されている。外槽６は外槽本体２と外槽カバー３とで構成され、その接続部分で第１のパッキング部材４を介して接続固定されている。外槽６は、その内側に有底円筒形に形成された回転ドラム５を、その回転軸が筐体１の正面側から背面側に向かって下向きに傾斜するように回転自在に支持している。
(Embodiment 1)
FIG. 1 shows a cross-sectional view of a drum-type washing machine according to the first embodiment of the present invention. In FIG. 1, a bottomed cylindrical outer tub 6 is supported in a casing 1 of a drum-type washing machine in a state inclined downward from the front side to the back side of the casing 1 by a suspension structure (not shown). ing. The outer tub 6 is composed of an outer tub main body 2 and an outer tub cover 3, and is connected and fixed via a first packing member 4 at the connection portion. The outer tub 6 rotatably supports a rotating drum 5 formed in a cylindrical shape with a bottom on the inner side so that the rotating shaft inclines downward from the front side of the housing 1 toward the back side. .
筐体１の正面側には、洗濯物を出し入れするための筐体開口部１ａが設けられており、さらにその筐体開口部１ａを開閉自在に覆う扉体８が設けられている。 On the front side of the housing 1, a housing opening 1a for taking in and out the laundry is provided, and a door body 8 that covers the housing opening 1a in an openable and closable manner is provided.
外槽カバー３には、筐体開口部１ａの対応位置に外槽カバー開口部（第１開口部）３ａが設けられており、回転ドラム５には、筐体開口部１ａ及び外槽カバー開口部３ａの対応位置に、回転ドラム開口部５ａ（第２開口部）が設けられている。この筐体開口部１ａ、外槽カバー開口部３ａ及び回転ドラム開口部５ａを介して、筐体１の外から回転ドラム５内への洗濯物の出し入れを行う。 The outer tank cover 3 is provided with an outer tank cover opening (first opening) 3a at a position corresponding to the housing opening 1a, and the rotating drum 5 is provided with the housing opening 1a and the outer tank cover opening. A rotary drum opening 5a (second opening) is provided at a position corresponding to the portion 3a. The laundry is put into and out of the rotating drum 5 from the outside of the casing 1 through the casing opening 1a, the outer tub cover opening 3a, and the rotating drum opening 5a.
回転ドラム５は、回転ドラム開口部５ａが設けられた回転ドラム前面部５ｂ、有底円筒状の胴部を構成する回転ドラム胴部５ｃ及び底部を構成する回転ドラム底部５ｄより構成され、また回転ドラム胴部５ｃの内面には撹拌突起５ｅが複数個設けられており、外槽本体２の外槽本体底部２ｃの外方に取り付けられた駆動モータ７によって回転駆動され、その回転速度や回転方向は可変である。 The rotating drum 5 includes a rotating drum front surface portion 5b provided with a rotating drum opening 5a, a rotating drum body portion 5c constituting a bottomed cylindrical body portion, and a rotating drum bottom portion 5d constituting a bottom portion. A plurality of agitation protrusions 5e are provided on the inner surface of the drum body 5c, and are rotationally driven by a drive motor 7 attached to the outer side of the outer tank main body bottom 2c of the outer tank main body 2. Is variable.
第１の給水弁（第１の給水手段）９には、第１給水ホース１０ａの一端が接続され、第１給水ホース１０ａの他端は、注水口金部１０ｂに接続されている。注水口金部１０ｂは、注水される水が略水平方向に広がりながら回転ドラム５内へ注水されるようスリット状に開口しており、回転ドラム５内に広がるように注水される。 One end of the first water supply hose 10a is connected to the first water supply valve (first water supply means) 9, and the other end of the first water supply hose 10a is connected to the water injection cap 10b. The water injection cap portion 10 b is opened in a slit shape so that water to be injected is injected into the rotating drum 5 while spreading in a substantially horizontal direction, and water is injected so as to spread into the rotating drum 5.
第２の給水弁（第２の給水手段）１１には、第２給水ホース１３ａの一端が接続され、第２給水ホース１３ａの他端は洗剤１３ｂを収納する洗剤ケース１３ｃに接続され、さらに洗剤ケース１３ｃの下部に第３給水ホース１３ｄの一端が接続され、第３給水ホース１３ｄの他端が外槽６に接続されて、外槽６内に給水できるようにしている。 One end of a second water supply hose 13a is connected to the second water supply valve (second water supply means) 11, and the other end of the second water supply hose 13a is connected to a detergent case 13c that houses the detergent 13b. One end of the third water supply hose 13d is connected to the lower part of the case 13c, and the other end of the third water supply hose 13d is connected to the outer tub 6 so that water can be supplied into the outer tub 6.
洗剤ケース１３ｃの上面には、第２給水ホース１３ａにより給水された水を洗剤ケース１３ｃ内へシャワー状に注水する複数の注水穴１３ｅが設けられ、注水穴１３ｅから出たシャワー状の水は洗剤１３ｂの上に落下し、洗剤１３ｂとともに外槽６内に流れ落ちる。外槽６内へ流れ落ちた洗濯水は、排水管路４２の途中に設けられた排水弁４３が開かれることにより、外槽６外へ排水される。 The upper surface of the detergent case 13c is provided with a plurality of water injection holes 13e for pouring water supplied by the second water supply hose 13a into the detergent case 13c in a shower shape, and the shower-like water coming out of the water injection holes 13e is detergent. It falls onto 13b and flows into the outer tub 6 together with the detergent 13b. The washing water that has flowed down into the outer tub 6 is drained out of the outer tub 6 by opening a drain valve 43 provided in the middle of the drain pipe 42.
また、本実施の形態１におけるドラム式洗濯機は、回転ドラム５内の洗濯物を乾燥させる乾燥機能を有している。図２は、本発明の第１の実施の形態における外槽６内に送風する循環送風経路を示す側断面図であり、図３は、本発明の第１の実施の形態における外槽６内に送風する循環送風経路を示す断面図である。 In addition, the drum type washing machine in the first embodiment has a drying function of drying the laundry in the rotating drum 5. FIG. 2 is a side cross-sectional view showing a circulation ventilation path for blowing air into the outer tub 6 in the first embodiment of the present invention, and FIG. 3 shows the inside of the outer tub 6 in the first embodiment of the present invention. It is sectional drawing which shows the circulation ventilation path | route which ventilates.
図２に示すように、筐体１の上方にはヒータ４４と送風ファン４５とを内部に収容したファンケース４６が設けられている。この送風ファン４５を回転させることにより、循環送風経路内に空気の流れが発生し、回転ドラム５内の空気は、回転ドラム５の側壁に設けられた通水孔５ｇを通して、外槽６の胴部に設けた温風取入口４７から、一端が温風取入口４７と連通する熱交換経路４８へ排気される。この熱交換経路４８において空気は除湿され、さらに熱交換経路４８の他端と連通する第１蛇腹ホース４９を介してファンケース４６へ送り込まれる。ファンケース４６内でヒータ４４に加熱された空気は、ファンケース４６と一端が連通する第２蛇腹ホース５０を介して温風送風経路５１を通り、さらに外槽６の背面に設けられ温風送風経路５１の他端と連通する温風送風口５２から外槽６内に送風され、回転ドラム５の背面に設けられた背面透孔５ｈを通って回転ドラム５内に再び送風される。 As shown in FIG. 2, a fan case 46 in which a heater 44 and a blower fan 45 are housed is provided above the housing 1. By rotating the blower fan 45, an air flow is generated in the circulation blower path, and the air in the rotary drum 5 passes through the water passage hole 5 g provided in the side wall of the rotary drum 5, and the body of the outer tub 6. One end is exhausted from a hot air intake 47 provided in the section to a heat exchange path 48 communicating with the hot air intake 47. In this heat exchange path 48, the air is dehumidified and further fed into the fan case 46 via a first bellows hose 49 communicating with the other end of the heat exchange path 48. The air heated by the heater 44 in the fan case 46 passes through the hot air blowing path 51 via the second bellows hose 50 that communicates with the fan case 46 at one end, and is further provided on the back surface of the outer tub 6 to supply hot air. Air is blown into the outer tub 6 from the hot air blowing port 52 communicating with the other end of the path 51, and is blown again into the rotating drum 5 through the back surface through-hole 5 h provided on the back surface of the rotating drum 5.
このような空気の循環を所定時間繰り返すことにより洗濯物の乾燥がなされる。 The laundry is dried by repeating such air circulation for a predetermined time.
また、図３に示すように、この温風送風経路５１内には洗剤泡の侵入を検知する泡検知手段５３が設けられている。外槽６内に洗剤泡が過剰に発生して温風送風経路５１内に入り込み、泡検知手段５３の位置まで達したとき、泡検知手段５３は洗剤泡を検知する。泡検知手段５３が洗剤泡を検知すると、これ以上洗剤泡を増やさないようにするため、泡生成行程（後述）を行わずに第２の給水行程（後述）へ進むようにしている。これは、洗剤泡がさらに生成されて泡検知手段５３の位置よりもさらに温風送風経路５１の奥へ侵入すると、洗剤泡が送風ファン４５やヒータ４４等の電気部品に付着してしまい故障等の不具合が発生してしまうためである。 Further, as shown in FIG. 3, the hot air blowing path 51 is provided with a foam detecting means 53 for detecting the intrusion of the detergent foam. When the detergent bubbles are excessively generated in the outer tub 6 and enter the hot air blowing path 51 and reach the position of the bubble detecting means 53, the foam detecting means 53 detects the detergent bubbles. When the foam detection means 53 detects the detergent foam, in order not to increase the detergent foam any more, the process proceeds to the second water supply process (described later) without performing the foam generation process (described later). This is because if detergent bubbles are further generated and enter further into the warm air blowing path 51 than the position of the bubble detecting means 53, the detergent bubbles adhere to electric parts such as the blower fan 45 and the heater 44, and so on. This is because the above problem occurs.
さらに、洗濯物の量に応じて駆動モータ７が受ける負荷変化から洗濯物の量を検知する布量検知手段１２、外槽６内の洗濯水の水位を検知する水位検知手段１４（図４に示す）及び洗濯行程から脱水行程までの運転動作の一連行程を制御する制御装置１５（図４に示す）などを設けている。 Furthermore, a cloth amount detecting means 12 for detecting the amount of laundry from the load change received by the drive motor 7 according to the amount of laundry, and a water level detecting means 14 for detecting the water level of the washing water in the outer tub 6 (see FIG. 4). And a control device 15 (shown in FIG. 4) for controlling a series of operation steps from the washing process to the dehydration process.
図４は、本発明の第１の実施の形態における制御装置１５の構成を示すブロック図である。制御装置１５は、制御手段１６、設定手段１７、記憶手段１８及びパワースイッチング手段１９等から構成される。マイクロコンピュータにより構成される制御手段１６は、設定手段１７から入力される運転コースの選択などの設定入力に応じて、記憶手段１８に記憶された制御プログラムを用いてパワースイッチング手段１９に制御指令を出力する。 FIG. 4 is a block diagram showing a configuration of the control device 15 in the first embodiment of the present invention. The control device 15 includes a control unit 16, a setting unit 17, a storage unit 18, a power switching unit 19, and the like. The control means 16 constituted by a microcomputer issues a control command to the power switching means 19 using a control program stored in the storage means 18 in response to a setting input such as selection of an operation course input from the setting means 17. Output.
パワースイッチング手段１９はＳＣＲ等のスイッチング素子を用いて構成されており、制御手段１６からの制御指令に応じて駆動モータ７、第１の給水弁９、第２の給水弁１１および排水弁４３などの動作を制御する。 The power switching means 19 is configured by using a switching element such as an SCR, and the drive motor 7, the first water supply valve 9, the second water supply valve 11, the drain valve 43 and the like according to a control command from the control means 16. To control the operation.
図５は、本発明の第１の実施の形態における外槽本体２の斜視図である。外槽本体２は、外槽本体開口部２ａ、外槽本体胴部２ｂおよび外槽本体底部２ｃを有する有底円筒型である。 FIG. 5 is a perspective view of the outer tub main body 2 in the first embodiment of the present invention. The outer tank main body 2 is a bottomed cylindrical type having an outer tank main body opening 2a, an outer tank main body body 2b, and an outer tank main body bottom 2c.
外槽本体底部２ｃと外槽本体胴部２ｂの境界部の近傍であって外槽本体底部２ｃ内面には、略凹状に形成された外槽本体底溝部２ｄを、外槽本体胴部２ｂと略同心円の円弧状に設けている。外槽本体底溝部２ｄには、内面側より外槽本体底溝部２ｄに対応した形状の外槽本体溝蓋２３が、その外周近傍に設けられた第２のパッキング部材２４を介して外周部をねじ２５にてねじ止め固定されており、この外槽本体底溝部２ｄと外槽本体溝蓋２３とにより第１の循環水路２２が形成されている。 An outer tank body bottom groove 2d formed in a substantially concave shape is formed on the inner surface of the outer tank body bottom 2c, in the vicinity of the boundary between the outer tank body bottom 2c and the outer tank body body 2b, and the outer tank body body 2b. It is provided in a substantially concentric circular arc shape. The outer tub main body bottom groove 2d has an outer tub main body groove lid 23 having a shape corresponding to the outer tub main body bottom groove 2d from the inner surface side through the second packing member 24 provided in the vicinity of the outer periphery. The outer tub main body bottom groove 2d and the outer tub main body groove lid 23 form a first circulation water channel 22 which is fixed by screws 25.
第１の循環水路２２の一端である取水口２０は、底面が外槽本体底溝部２ｄの底面から外槽本体底部２ｃの内面まで徐々に変化する案内凹部２１に連通している。また、外槽本体２には、その外槽本体胴部２ｂの外側に、外槽本体開口部２ａから外槽本体底部２ｃまで連通するパイプ状の第２の循環水路２６が一体に形成されており、この第２の循環水路２６の外槽本体底部２ｃ側の端が第１の循環水路２２の他端に連通している。 The water intake 20 which is one end of the first circulating water channel 22 communicates with the guide recess 21 whose bottom surface gradually changes from the bottom surface of the outer tank main body bottom groove 2d to the inner surface of the outer tank main body bottom 2c. The outer tub main body 2 is integrally formed with a pipe-like second circulation water channel 26 communicating from the outer tub main body opening 2a to the outer tub main body bottom 2c outside the outer tub main body 2b. The end of the second circulating water channel 26 on the outer tub main body bottom 2 c side communicates with the other end of the first circulating water channel 22.
図６は、本発明の第１の実施の形態における外槽カバー３の斜視図である。 FIG. 6 is a perspective view of the outer tub cover 3 according to the first embodiment of the present invention.
外槽カバー３は、外槽カバー開口部３ａが設けられた外槽カバー前面部３ｂと、外槽カバー胴部３ｃと、外槽カバー後方開口部３ｄを有する略円筒状に形成されている。 The outer tank cover 3 is formed in a substantially cylindrical shape having an outer tank cover front surface portion 3b provided with an outer tank cover opening 3a, an outer tank cover body portion 3c, and an outer tank cover rear opening 3d.
外槽カバー３には、その外槽カバー胴部３ｃの外側で、第２の循環水路２６に対応する位置に外槽カバー後方開口部３ｄから外槽カバー前面部３ｂまで連通する第３の循環水路２７が一体に形成されている。 The outer tank cover 3 has a third circulation that communicates from the outer tank cover rear opening 3d to the outer tank cover front surface portion 3b at a position corresponding to the second circulation water channel 26 outside the outer tank cover body 3c. The water channel 27 is integrally formed.
外槽カバー前面部３ｂ内面には、略凹状に形成された外槽カバー前面溝部３ｅを、外槽カバー前面部３ｂの外周側から外槽カバー開口部３ａに近づくにつれ、途中で二股に分かれるような略Ｙ字状に設けられている。この外槽カバー前面溝部３ｅには、内面側より外槽カバー前面溝部３ｅの形状に対応した形状の外槽カバー溝蓋２９が、その外周近傍に設けられた第３のパッキング部材３０を介して、外周部をねじ３１にてねじ止め固定されている。この外槽カバー前面溝部３ｅと外槽カバー溝蓋２９とにより、略Ｙ字状の第４の循環水路２８が形成されている。 On the inner surface of the outer tub cover front surface portion 3b, an outer tub cover front surface groove portion 3e formed in a substantially concave shape is divided into two branches in the middle as approaching the outer tub cover opening portion 3a from the outer peripheral side of the outer tub cover front surface portion 3b. It is provided in a substantially Y shape. An outer tub cover groove cover 29 having a shape corresponding to the shape of the outer tub cover front groove 3e is formed on the outer tub cover front groove 3e via the third packing member 30 provided in the vicinity of the outer periphery thereof. The outer periphery is fixed with screws 31. The outer tub cover front groove 3e and the outer tub cover groove lid 29 form a substantially Y-shaped fourth circulation water channel 28.
第４の循環水路２８の略Ｙ字状の下側端である一端は、第３の循環水路２７の外槽カバー前面部３ｂ側の端と連通している。外槽カバー溝蓋２９には、二股に分かれた先端部分の近傍に、洗濯水を吐出するための循環ノズル３４がそれぞれ設けられている。 One end, which is the substantially Y-shaped lower end of the fourth circulating water channel 28, communicates with the end of the third circulating water channel 27 on the outer tank cover front surface portion 3 b side. The outer tub cover groove cover 29 is provided with circulation nozzles 34 for discharging washing water in the vicinity of the bifurcated tip portion.
この構成により、図６に示すように循環ノズル３４は、外槽カバー開口部３ａの外周近傍で、かつ、外槽カバー前面部３ｂの内面側であって、回転ドラム開口部５ａ内に面するように配設されている。 With this configuration, as shown in FIG. 6, the circulation nozzle 34 is in the vicinity of the outer periphery of the outer tank cover opening 3a and on the inner surface side of the outer tank cover front surface 3b, and faces the rotary drum opening 5a. It is arranged like this.
また、外槽本体２と外槽カバー３が接続固定され外槽６として筐体１に支持された状態において、循環ノズル３４は、外槽カバー前面部５ｃの下半分の部分に位置し、取水口２０より低い位置になるように設けられている。 In addition, in a state where the outer tub body 2 and the outer tub cover 3 are connected and fixed and supported by the housing 1 as the outer tub 6, the circulation nozzle 34 is located in the lower half of the outer tub cover front surface portion 5c, and takes in water. It is provided so as to be lower than the mouth 20.
また、外槽本体２と外槽カバー３が接続固定された時において、第２の循環水路２６と第３の循環水路２７は、前述した外槽本体２と外槽カバー３を接続固定する方法と同様にして第１のパッキング部材４を介して接続固定されている。 Further, when the outer tub main body 2 and the outer tub cover 3 are connected and fixed, the second circulating water channel 26 and the third circulating water channel 27 are connected and fixed to the outer tub main body 2 and the outer tub cover 3 described above. In the same manner as above, it is connected and fixed via the first packing member 4.
図７（ａ）は本発明の第１の実施の形態における循環ノズル３４の正面図、図７（ｂ）は同循環ノズル３４の平面図、図７（ｃ）は同循環ノズル３４の側断面図である。循環ノズル３４は、一端が第４の循環水路２８と連通し、他端が回転ドラム５の内面側へ突出した、略円筒状のノズル３４ａと、下半分がノズル３４ａの突出した端の下半分と一体に形成され、上半分が回転ドラム５の内面側へ向かうにつれてノズル３４ａから離れるように傾斜し、その上端の高さがノズル３４ａの上端と略同じ高さになるように形成された略円盤状の調節板３３とで、構成されている。この調節板３３の上半分をノズル３４ａと離すことにより吐出口３２を形成している。また、調節板３３の傾斜角度を調節することにより、第１〜４の循環水路２２、２６、２７、２８を通ってきた洗濯水の吐出角度を調節することができる。 FIG. 7A is a front view of the circulation nozzle 34 in the first embodiment of the present invention, FIG. 7B is a plan view of the circulation nozzle 34, and FIG. 7C is a side cross-section of the circulation nozzle 34. FIG. The circulation nozzle 34 has one end communicating with the fourth circulation water channel 28 and the other end protruding toward the inner surface of the rotary drum 5. The lower half is the lower half of the end protruding from the nozzle 34 a. The upper half is inclined so as to move away from the nozzle 34a toward the inner surface side of the rotating drum 5, and the upper end of the upper half is substantially the same height as the upper end of the nozzle 34a. A disc-shaped adjusting plate 33 is used. The discharge port 32 is formed by separating the upper half of the adjustment plate 33 from the nozzle 34a. Further, by adjusting the inclination angle of the adjustment plate 33, the discharge angle of the washing water that has passed through the first to fourth circulation water channels 22, 26, 27, and 28 can be adjusted.
図８は、本発明の第１の実施の形態における回転ドラム５の回転ドラム底部５ｄの外方からの平面図であり、図９は、回転ドラム５の縦断面図である。 FIG. 8 is a plan view from the outside of the rotating drum bottom 5d of the rotating drum 5 according to the first embodiment of the present invention, and FIG. 9 is a longitudinal sectional view of the rotating drum 5. FIG.
回転ドラム底部５ｄは、その外周に外側へ突出するフランジ部５ｆを設けることで、略凹状に形成され、回転ドラム胴部５ｃの後端部分と、フランジ部５ｆとをかしめまたは溶接等により連接している。 The rotating drum bottom 5d is formed in a substantially concave shape by providing a flange portion 5f protruding outward on the outer periphery thereof, and the rear end portion of the rotating drum body 5c and the flange portion 5f are connected by caulking or welding or the like. ing.
この回転ドラム底部５ｄの外面側のフランジ部５ｆ内には、３本の延設部３５ａを略放射状に有するアルミダイキャスト製のドラム固定部材３５が設けられるとともに、３本の延設部３５ａ間に、それぞれ回転ドラム底部５ｄの外周に沿うように形成された略円弧状のリブ取付部材３７が設けられている。 Inside the flange portion 5f on the outer surface side of the rotating drum bottom portion 5d, there are provided a drum fixing member 35 made of aluminum die cast having three extending portions 35a substantially radially, and between the three extending portions 35a. In addition, a substantially arc-shaped rib attachment member 37 formed along the outer periphery of the rotating drum bottom 5d is provided.
ドラム固定部材３５は、モータ７から延出したシャフト７ａとその中央部分で連結され、モータ７の回転を回転ドラム５に伝達している。 The drum fixing member 35 is connected to a shaft 7 a extending from the motor 7 at a central portion thereof, and transmits the rotation of the motor 7 to the rotating drum 5.
リブ取付部材３７は、外周に後方へ凸の外壁４０および内壁４１を設けることで、略凹状に形成し、その内部に外壁４０と内壁４１とを連結する複数本のリブ３８を外壁４０と内壁４１とほぼ同じ高さで、外周側に向かうにつれ外槽６内を回転する洗濯水の流れ方向に向かって所定の角度で傾斜させ、かつ、外槽６内を回転する洗濯水の流れ方向と反対方向に凸となるように湾曲させている。 The rib attachment member 37 is formed in a substantially concave shape by providing an outer wall 40 and an inner wall 41 that protrude rearward on the outer periphery, and a plurality of ribs 38 that connect the outer wall 40 and the inner wall 41 are formed therein. 41 is inclined at a predetermined angle toward the flow direction of the washing water rotating in the outer tub 6 as it goes to the outer peripheral side at the same height as 41, and the flow direction of the washing water rotating in the outer tub 6 It is curved to be convex in the opposite direction.
以上のように構成されたドラム式洗濯機について、以下その動作及び作用を説明する。図１０および図１１は洗い行程のフローチャートであり、図１０は、布量判定行程から泡生成行程までのフローチャート、図１１は、第２給水行程から張り付き行程までのフローチャートである。 About the drum type washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. 10 and 11 are flowcharts of the washing process, FIG. 10 is a flowchart from the cloth amount determination process to the foam generation process, and FIG. 11 is a flowchart from the second water supply process to the sticking process.
Ｓ１００において、回転ドラム５内に洗濯物が投入され運転開始の入力が行われると、制御手段１６は、制御プログラムを記憶手段１８から読み出し、以下のような制御動作を行う。 In S100, when the laundry is put into the rotating drum 5 and the operation start is input, the control means 16 reads the control program from the storage means 18 and performs the following control operation.
Ｓ１０１では、布量検知手段１２により回転ドラム５を回転させることにより洗濯物の量を検知し、検知した洗濯物の量を記憶手段１８に記憶する（布量判定行程）。 In S101, the amount of laundry is detected by rotating the rotary drum 5 by the cloth amount detection means 12, and the detected amount of laundry is stored in the storage means 18 (cloth amount determination process).
次にＳ１０２では、第１の給水弁９を開き、第１給水ホース１０ａを通して注水口金部１０ｂから回転ドラム内に注水する。注水口金部１０ｂはスリット状に開口しているため、注水された水は略水平方向に広がって回転ドラム５内の洗濯物にふりかかり、洗濯物に浸透する。第４の所定時間（例えば、６０秒）給水すると（Ｓ１０３）、Ｓ１０４で第１の給水弁９を閉じ、給水を停止する。 Next, in S102, the first water supply valve 9 is opened, and water is injected into the rotary drum from the water injection cap 10b through the first water supply hose 10a. Since the water injection cap part 10b is opened in a slit shape, the injected water spreads in a substantially horizontal direction and sprinkles on the laundry in the rotating drum 5 and penetrates into the laundry. When water is supplied for a fourth predetermined time (for example, 60 seconds) (S103), the first water supply valve 9 is closed and the water supply is stopped in S104.
次にＳ１０５では、第２の給水弁１１を開き第２給水ホース１３ａを通して洗剤ケース１３ｃに水を流し込むとともに、第１の給水弁９からの給水（Ｓ１０２）を始めるのと並行して、回転ドラム５を第４の所定回転速度（例えば、３５ｒ／ｍｉｎ）で筐体１の正面側から見て左回転させる。洗剤ケース１３ｃに流れ込んだ水は、洗剤ケース１３ｃの上面に設けられた複数の注水穴１３ｅを通過し、シャワー状に洗剤１３ｂ上へ流れ落ちる。その後、水は洗剤１３ｂとともに洗剤ケース１３ｃの下部に接続した第３給水ホース１３ｄを通り、外槽６内に流れ込む。Ｓ１０６において、第１の水位まで水が給水されたことを水位検知手段１４により検知すると、Ｓ１０７において第２の給水弁１１を閉じて給水を停止するとともに、回転ドラム５の回転を停止させる。 Next, in S105, the second water supply valve 11 is opened, water is poured into the detergent case 13c through the second water supply hose 13a, and at the same time as the water supply from the first water supply valve 9 (S102) is started, the rotating drum 5 is rotated counterclockwise when viewed from the front side of the housing 1 at a fourth predetermined rotation speed (for example, 35 r / min). The water flowing into the detergent case 13c passes through the plurality of water injection holes 13e provided on the upper surface of the detergent case 13c, and flows down onto the detergent 13b in a shower-like manner. Thereafter, water flows into the outer tub 6 through the third water supply hose 13d connected to the lower portion of the detergent case 13c together with the detergent 13b. In S106, when the water level detection means 14 detects that water has been supplied up to the first water level, in S107, the second water supply valve 11 is closed to stop water supply, and the rotation of the rotary drum 5 is stopped.
この第１の給水行程（Ｓ１０２〜Ｓ１０７）において、回転ドラム５を左回転させているのは、温風送風経路５１に設けた泡検知手段５３により洗濯泡が検知されにくいようにするためである。 The reason why the rotating drum 5 is rotated counterclockwise in the first water supply process (S102 to S107) is to make it difficult for the foam detection means 53 provided in the hot air blowing path 51 to detect the washing foam. .
すなわち、第１の給水行程において回転ドラム５を低い第４の所定回転速度で回転させているため、外槽６に溜まった洗剤１３ｂを含む水（以下、洗濯水という）は、作用する遠心力が小さいため外槽本体胴部２ｂと外槽本体底部２ｃの境界近傍を回転せずに途中で下方に落ちてしまう。そのため、外槽本体底部２ｃの上方に設けた取水口２１に洗濯水はほとんど入らないため回転ドラム５内へ循環されず、外槽６内には回転ドラム５の回転により洗剤泡が発生して洗濯水の体積が増える一方となる。 That is, since the rotating drum 5 is rotated at a low fourth predetermined rotation speed in the first water supply stroke, the water containing the detergent 13b accumulated in the outer tub 6 (hereinafter referred to as washing water) acts as a centrifugal force acting on it. Is small, it falls down in the middle without rotating the vicinity of the boundary between the outer tub main body body 2b and the outer tub main body bottom 2c. For this reason, washing water does not enter the water intake 21 provided above the bottom portion 2c of the outer tub main body, so that it is not circulated into the rotating drum 5, and detergent bubbles are generated in the outer tub 6 due to the rotation of the rotating drum 5. The volume of washing water will increase.
また、回転ドラム５の回転ドラム底部５ｄには、図８に示すようにリブ３８を設けているため、リブ３８を設けていない場合に比べて洗剤泡が発生しやすい。特に、リブ３８は筐体１の正面側から見て右回転方向（矢印Ｂの向き）に向かって傾斜させた状態で形成しているため（図８は本体１の後面側から見た図）、回転ドラム５を右回転させるとリブ３８がより多くの洗濯水を掻きあげることにより洗剤泡が大量に発生してしまう。 Further, since the rib 38 is provided on the rotating drum bottom 5d of the rotating drum 5 as shown in FIG. 8, detergent bubbles are likely to be generated as compared with the case where the rib 38 is not provided. In particular, the rib 38 is formed in a state of being inclined toward the right rotation direction (direction of arrow B) when viewed from the front side of the housing 1 (FIG. 8 is a view seen from the rear side of the main body 1). When the rotating drum 5 is rotated to the right, a large amount of detergent bubbles are generated by the rib 38 scooping up more washing water.
さらに、温風送風経路５１は、図３に示すように回転ドラム５を筐体１の正面側から見て左回転よりも右回転させたときに洗濯水が矢印Ａの方向へ取り込まれやすい形状であるため（図３は筐体１の背面側から見た図）、右回転させるとより多くの洗剤泡が泡検知手段５３を内部に有する温風送風経路５１に入り込んでしまう。 Further, as shown in FIG. 3, the warm air blowing path 51 has a shape in which washing water is easily taken in the direction of arrow A when the rotating drum 5 is rotated to the right rather than to the left as viewed from the front side of the housing 1. (FIG. 3 is a view as seen from the back side of the housing 1), when it is rotated to the right, more detergent bubbles enter the warm air blowing path 51 having the bubble detecting means 53 inside.
したがって、回転ドラム５の回転方向を筐体１の正面側から見て左回転（図９の矢印Ｄ）とすることにより、リブ３８が洗濯水を掻きあげにくくして洗剤泡の発生を抑え、洗剤泡が温風送風経路５１に入るのを抑えている。 Therefore, when the rotation direction of the rotary drum 5 is set to the left rotation (arrow D in FIG. 9) when viewed from the front side of the housing 1, the rib 38 makes it difficult to scoop up the washing water and suppresses the generation of detergent bubbles. The detergent bubbles are prevented from entering the hot air blowing path 51.
以上のように、第１の給水行程において、第１の給水弁９により回転ドラム５内に直接給水して水を洗濯物に浸透させ、第２の給水弁１１により洗剤１３ｂと共に外槽６内に流れ落ちるように給水するので、第２の給水手段のみで給水する場合に比べると、同じ水量を給水しても洗濯物に浸透する洗濯水の量が増えるので、外槽６内に溜まる洗濯水の量が少量になり、洗剤泡を含む洗濯水の体積を減らすことができる。また、洗剤１３ｂが外槽６内に投入される時間が遅くなるので、洗濯水がリブ３８に掻きあげられる時間を短くすることができ、洗剤泡の発生を制限することができる。 As described above, in the first water supply process, the first water supply valve 9 supplies water directly into the rotary drum 5 to infiltrate the laundry, and the second water supply valve 11 together with the detergent 13b in the outer tub 6 Therefore, the amount of washing water that penetrates into the laundry increases even when the same amount of water is supplied, so that the washing water that accumulates in the outer tub 6 is greater than the amount of water supplied by the second water supply means. As a result, the volume of washing water containing detergent foam can be reduced. Moreover, since the time for the detergent 13b to be put into the outer tub 6 is delayed, the time for the washing water to be scraped up to the ribs 38 can be shortened, and the generation of detergent bubbles can be restricted.
また、回転ドラム５を回転させながら給水を行うことにより、洗濯物は回転ドラム５内を移動するため、洗濯物に洗濯水をまんべんなくかけることができ、略均一に洗濯水を浸透させることができる。これにより、後の泡生成行程（Ｓ１１０〜Ｓ１１２）で回転ドラム５を高い回転速度（１００ｒ／ｍｉｎ以上）で回転させたときに、洗濯水が洗濯物に不均一に浸透しているためアンバランスが生じ外槽６が異常振動しまうといった問題を防止することができる。 Further, by supplying water while rotating the rotating drum 5, the laundry moves in the rotating drum 5, so that the washing water can be evenly applied to the laundry, and the washing water can penetrate substantially uniformly. . As a result, when the rotating drum 5 is rotated at a high rotation speed (100 r / min or more) in the subsequent foam generation process (S110 to S112), the washing water is unevenly permeated into the laundry. And the problem that the outer tub 6 vibrates abnormally can be prevented.
次にＳ１０８において、回転ドラム５を、右回転で略静止状態から、第１の所定回転速度（回転ドラム５の回転に伴う遠心力により洗濯物が回転ドラム５の内周面に張り付く程度の回転速度、例えば８０ｒ／ｍｉｎ）まで徐々に加速させることにより、洗濯物に作用する重力よりも遠心力が大きくなるようにして、洗濯物を回転ドラム５の内周面に張り付かせる。 Next, in step S108, the rotating drum 5 is rotated from the substantially stationary state by rotating to the right, so that the laundry is stuck to the inner peripheral surface of the rotating drum 5 by the first predetermined rotation speed (the centrifugal force accompanying the rotation of the rotating drum 5). By gradually accelerating to a speed (for example, 80 r / min), the laundry is stuck to the inner peripheral surface of the rotating drum 5 such that the centrifugal force is greater than the gravity acting on the laundry.
Ｓ１０９では、駆動モータ７へ印加する電圧を、回転ドラム５の回転速度が第１の所定回転速度に保てる程度に固定し、その状態で回転速度の変動を測定し、バランス状態が良いか悪いかを判定する。バランス状態が良いと判定したとき、次の泡生成行程（Ｓ１１０〜Ｓ１１２）へ移り、バランス状態が悪いと判定したとき、回転ドラム５の回転を停止し、Ｓ１０８に戻る。Ｓ１０８を実行し、Ｓ１０９において再度バランス状態を判定し、バランス状態が良いと判定したときは、泡生成行程に移り、再度バランス状態が悪いと判定したときは、次の泡生成行程を行わずに、第２の給水行程（Ｓ１１３〜Ｓ１１６）へ移る。 In S109, the voltage applied to the drive motor 7 is fixed to such an extent that the rotation speed of the rotary drum 5 can be maintained at the first predetermined rotation speed, and the fluctuation of the rotation speed is measured in this state to determine whether the balance state is good or bad. Determine. When it is determined that the balance state is good, the process proceeds to the next bubble generation process (S110 to S112). When it is determined that the balance state is bad, the rotation of the rotary drum 5 is stopped and the process returns to S108. S108 is executed, the balance state is determined again in S109, and when it is determined that the balance state is good, the process proceeds to a bubble generation process, and when it is determined that the balance state is bad again, the next bubble generation process is not performed. Then, the process proceeds to the second water supply process (S113 to S116).
以上のようにバランス行程（Ｓ１０８〜Ｓ１０９）においては、洗濯物を略均一に回転ドラム５の内周面へ張り付かせるので、後の泡生成行程（Ｓ１１０〜Ｓ１１２）で回転ドラム５を高い回転速度（１００ｒ／ｍｉｎ以上）で回転させてもアンバランスが生じず、外槽６の異常振動を防止することができる。 As described above, in the balance process (S108 to S109), the laundry is stuck almost uniformly on the inner peripheral surface of the rotary drum 5, so that the rotary drum 5 is rotated at a high speed in the subsequent foam generation process (S110 to S112). Even if it is rotated at a speed (100 r / min or more), unbalance does not occur and abnormal vibration of the outer tub 6 can be prevented.
また、このバランス行程において回転ドラム５を回転させることにより洗剤１３ｂが溶解する（洗剤溶解行程）。このバランス行程において洗剤を溶解させておくことにより、後の行程において外槽６内の洗濯水を回転ドラム５内に循環させたときに、洗剤１３ｂが洗濯水に溶けず洗濯物に付着してしまうのを防ぐことができる。 Further, the detergent 13b is dissolved by rotating the rotary drum 5 in this balance process (detergent dissolving process). By dissolving the detergent in this balance process, when the washing water in the outer tub 6 is circulated in the rotating drum 5 in the subsequent process, the detergent 13b does not dissolve in the washing water and adheres to the laundry. Can be prevented.
次にＳ１１０では、回転ドラム５の回転速度を、第１の所定回転速度から第３の所定回転速度（第１の所定回転速度より高い回転速度、例えば、１２０ｒ／ｍｉｎ）まで立ち上げ、外槽６内の洗濯水を泡立たせて洗剤泡を生成する。 Next, in S110, the rotational speed of the rotating drum 5 is increased from the first predetermined rotational speed to a third predetermined rotational speed (a rotational speed higher than the first predetermined rotational speed, for example, 120 r / min), and the outer tank The washing water in 6 is bubbled to produce detergent foam.
図１２は回転ドラム５および外槽６の断面図（筐体１の正面側から見た図）であり、図１２に示すように、外槽６の最下部には回転ドラム５の回転方向（右方向、矢印Ｃ方向）と直交する方向に排水溝５４が形成されている。この排水溝５４の側壁５４ａは水流方向（矢印Ｄ方向）に交差しているので、回転ドラム５を右回転させることにより、この側壁５４ａによって水流に乱流（矢印Ｅ）が生じ、乱流によって洗濯水を泡立たせ洗剤泡を生成することができる。 FIG. 12 is a cross-sectional view of the rotary drum 5 and the outer tub 6 (viewed from the front side of the housing 1). As shown in FIG. A drainage groove 54 is formed in a direction orthogonal to the right direction (arrow C direction). Since the side wall 54a of the drain groove 54 intersects the water flow direction (arrow D direction), when the rotating drum 5 is rotated to the right, a turbulent flow (arrow E) is generated in the water flow by the side wall 54a. Washing water can be bubbled to produce detergent foam.
また、回転ドラム底部５ｄに形成されたリブ３８が右回転方向に向かって傾斜しているため、回転ドラム５が右回転することにより洗濯水をより多く掻きあげ、洗濯水をさらに泡立たせることができる。 Further, since the ribs 38 formed on the rotating drum bottom 5d are inclined in the right rotation direction, the rotating drum 5 can be rotated to the right to scrape more washing water and further lather the washing water. it can.
このようにして大量に生成された洗剤泡は、外槽６と回転ドラム５の間に充満して回転ドラム開口部５ａ側へ上昇し、回転ドラム開口部５ａから回転ドラム５内に次々と入っていく。さらに、リブ３８により外槽６内の洗剤泡を含む洗濯水が掻きあげられることにより、洗濯水は外槽本体胴部２ｂと外槽本体底部２ｃの境界近傍を回転し、外槽本体底部２ｃに設けた案内凹部２１に導かれて取水口２０に取り込まれ、第１〜４の循環水路２２、２６、２７、２８を通って吐出口３２から回転ドラム５内に吐出される。これにより、洗剤泡を含む洗濯水を大量に回転ドラム５内に循環することができる。 The detergent foam generated in a large amount in this way is filled between the outer tub 6 and the rotating drum 5 and rises toward the rotating drum opening 5a, and enters the rotating drum 5 one after another from the rotating drum opening 5a. To go. Further, the washing water containing detergent bubbles in the outer tub 6 is scraped up by the ribs 38, so that the washing water rotates in the vicinity of the boundary between the outer tub main body trunk 2b and the outer tub main body bottom 2c, and the outer tub main body bottom 2c. Are guided to the water intake 20 through the guide recesses 21 provided in the first through fourth circulation water passages 22, 26, 27, and 28 and discharged from the discharge port 32 into the rotary drum 5. Thereby, a large amount of washing water containing detergent bubbles can be circulated in the rotating drum 5.
このように、回転ドラム５を第３の所定回転速度で第５の所定時間（例えば、３０秒）回転させて洗剤泡を生成し回転ドラム５内に洗剤泡を充満させると（Ｓ１１１）、Ｓ１１２において回転ドラム５を停止する。 As described above, when the rotating drum 5 is rotated at the third predetermined rotation speed for the fifth predetermined time (for example, 30 seconds) to generate detergent bubbles and the rotating drum 5 is filled with the detergent bubbles (S111), S112. The rotary drum 5 is stopped.
回転ドラム５内に洗剤泡が大量にある場合、後述する叩き洗い行程において叩き洗いの効果を十分に得ることができない。しかし、泡生成行程（Ｓ１１０〜Ｓ１１２）の後であって叩き洗い行程より前に、回転ドラム５内に給水し、洗剤泡を消すようにしていることから、回転ドラム５を第３の所定回転速度のように高い回転速度で回転させ大量に洗剤泡を生成しても問題はなく、むしろ洗剤による洗浄力を上げるためにこの泡生成行程では大量に洗剤泡を生成させることが望ましい。 When there is a large amount of detergent foam in the rotating drum 5, it is not possible to sufficiently obtain the effect of tapping in the tapping process described later. However, after the foam generation process (S110 to S112) and before the scouring process, water is supplied into the rotary drum 5 so that the detergent foam disappears. There is no problem even if a large amount of detergent foam is generated by rotating at a high rotational speed like the speed, but it is desirable to generate a large amount of detergent foam in this foam generation process in order to increase the cleaning power by the detergent.
また、第１の給水行程で給水した水は洗濯物に吸収されるため、この泡生成行程における外槽６の水位は、第１の給水行程において給水した第１の所定水位よりはるかに低くなっている。しかし、回転ドラム５を第３の回転速度で回転させているので、取水口２０から取り込んで回転ドラム５内に循環させる循環水量を十分に確保することができる。また、泡生成行程における水位が低いため、高濃度の洗剤泡を生成し洗濯物に浸透させることができ洗浄力を上げることができる。 Further, since the water supplied in the first water supply process is absorbed by the laundry, the water level of the outer tub 6 in the foam generation process is much lower than the first predetermined water level supplied in the first water supply process. ing. However, since the rotating drum 5 is rotated at the third rotation speed, a sufficient amount of circulating water taken from the water intake 20 and circulated in the rotating drum 5 can be secured. Moreover, since the water level in a foam production | generation process is low, a highly concentrated detergent foam can be produced | generated and it can be made to osmose | permeate and can improve a cleaning power.
さらに、前行程のバランス行程から回転方向を変えずに徐々に回転速度を上げているので、洗濯物が回転ドラム５の内周面に張り付いた状態で回転しており、洗濯物が一部に固まって回転している状態よりも広い範囲で洗濯物に洗剤泡を浸透させることができ、洗剤泡をより早く洗濯物全体に浸透させることができる。 Further, since the rotational speed is gradually increased without changing the rotational direction from the balance stroke of the previous stroke, the laundry is rotating while being stuck to the inner peripheral surface of the rotary drum 5, and the laundry is partially The detergent foam can be permeated into the laundry in a wider range than the state of being hardened and rotating, and the detergent foam can permeate the entire laundry faster.
以上により泡生成行程（Ｓ１１０〜Ｓ１１２）では、洗濯水を体積の大きい泡の状態にして、回転ドラム５内の洗濯物に付着浸透させることにより、汚れに洗剤成分が作用しやすくなり、高濃度の洗剤液が染み込みやすくなって洗いむらが抑制され、洗浄力が向上する。また、洗剤泡を含む洗濯水を早期に洗濯物に浸透させるほど洗浄力を上げることができるので、この泡生成行程はできるだけ早い段階で行うことが望ましい。 As described above, in the foam generation process (S110 to S112), the detergent component easily acts on the dirt by making the washing water into a foam with a large volume and allowing the washing water to adhere to and penetrate into the laundry in the rotating drum 5, thereby increasing the concentration. This makes it easier for the detergent solution to soak in and prevents uneven washing, improving the cleaning power. In addition, since the washing power can be increased as the washing water containing the detergent bubbles penetrates into the laundry at an early stage, it is desirable to perform this foam generation process as early as possible.
次にＳ１１３では、第１の給水弁９を開き第１給水ホース１０ａを通じて注水口金部１０ｂから回転ドラム５内に給水するとともに、回転ドラム５を、第２の所定回転速度（回転ドラム５内に収容された洗濯物が、回転ドラム５の回転により回転方向に持ち上げられ、回転に伴う慣性や遠心力よりも自重が勝る高さ位置に移動したとき回転ドラム５の下方内周面上に落下する挙動を示す回転速度、例えば４５ｒ／ｍｉｎ）で右回転・休止・第２の所定回転速度で左回転・休止の順で繰り返し回転させる。 Next, in S113, the first water supply valve 9 is opened and water is supplied into the rotary drum 5 from the water injection cap 10b through the first water supply hose 10a, and the rotary drum 5 is supplied to the second predetermined rotational speed (into the rotary drum 5). When the stored laundry is lifted in the rotational direction by the rotation of the rotating drum 5 and moves to a height position where the weight of the laundry is higher than the inertia and centrifugal force associated with the rotation, it falls onto the lower inner peripheral surface of the rotating drum 5. The rotation is repeated in the order of right rotation / pause / left rotation / pause at a second predetermined rotation speed at a rotation speed indicating the behavior (for example, 45 r / min).
第２の所定水位（第１の所定水位と同程度か低い水位）まで給水すると（Ｓ１１４）、Ｓ１１５において第１の給水弁９を閉じ給水を停止する。 When the water is supplied to the second predetermined water level (a water level that is the same as or lower than the first predetermined water level) (S114), the first water supply valve 9 is closed and the water supply is stopped in S115.
第６の所定時間（例えば、１分３０秒）回転および給水を行うと（Ｓ１１６）、次の叩き洗い行程（Ｓ１１７〜Ｓ１２０）へ移る。 When rotation and water supply are performed for a sixth predetermined time (for example, 1 minute 30 seconds) (S116), the process proceeds to the next tapping process (S117 to S120).
以上のように第２の給水行程（Ｓ１１３〜Ｓ１１６）において、回転ドラム５内に直接給水することにより、回転ドラム５内の洗剤泡を減らし、洗濯水の洗剤濃度を下げている。すなわち、後の叩き洗い行程において、叩き洗いを行うときに回転ドラム５内に洗剤泡があると、洗剤泡がクッションとなって叩き洗いの効果が十分に得られない。そのため、この第２の給水行程で給水することにより、洗剤泡を減らし、洗剤濃度を低くして洗濯水の泡立ちを減らすようにしている。 As described above, in the second water supply process (S113 to S116), by supplying water directly into the rotating drum 5, the detergent bubbles in the rotating drum 5 are reduced, and the detergent concentration of the washing water is lowered. In other words, if there is detergent bubbles in the rotating drum 5 during the subsequent tapping process, the detergent foam becomes a cushion and the tapping effect cannot be obtained sufficiently. Therefore, by supplying water in this second water supply process, detergent bubbles are reduced, and the detergent concentration is lowered to reduce foaming of washing water.
次にＳ１１７において、第１の給水弁９を開き第１給水ホース１０ａを通じて注水口金部１０ｂから回転ドラム５の内部に第１の所定水位まで給水するとともに、回転ドラム５を第２の所定回転速度で右回転・休止・第２の所定回転速度で左回転・休止の順に繰り返し回転させる。 Next, in S117, the first water supply valve 9 is opened and water is supplied to the inside of the rotary drum 5 from the water injection cap 10b through the first water supply hose 10a to the first predetermined water level. The rotation is repeated in the order of right rotation / pause / left rotation / pause at the second predetermined rotation speed.
第１の水位まで給水すると（Ｓ１１８）、Ｓ１１９において第１の給水弁９を閉じ給水を停止する。 When water is supplied to the first water level (S118), the first water supply valve 9 is closed and water supply is stopped in S119.
回転ドラム５を第１の所定時間（例えば、３分３０秒）給水および回転させると（Ｓ１２０）、次の張り付き行程（Ｓ１２１〜Ｓ１２２）へ移る。 When the rotating drum 5 is supplied with water and rotated for a first predetermined time (for example, 3 minutes and 30 seconds) (S120), the process proceeds to the next sticking step (S121 to S122).
回転ドラム５を第２の所定回転速度で回転させることにより、回転ドラム５の内周面の複数位置に設けた撹拌突起５ｅが、回転ドラム５内の洗濯物を引っ掛けて回転方向に持ち上げる。持ち上げられた洗濯物は、その自重が回転に伴う慣性や遠心力に勝る高さ位置まで持ち上げられたとき落下する。このように洗濯物は次々と持ち上げられては落下するため位置が次々と入れ替わり、注水口金部１０ｂから回転ドラム５に給水される水が洗濯物に略均一にふりかかり浸透する。これにより、前行程の泡生成行程により洗濯物に付着浸透している洗剤泡が注水口金部１０ｂより給水される水によってさらに洗濯物内部にまで浸透することになる。このように随時洗濯物に洗剤泡が浸透しながら、洗濯物は落下したときの衝撃力で洗浄される。 By rotating the rotating drum 5 at the second predetermined rotation speed, the stirring protrusions 5e provided at a plurality of positions on the inner peripheral surface of the rotating drum 5 hook the laundry in the rotating drum 5 and lift it in the rotation direction. The lifted laundry drops when its own weight is lifted to a height that exceeds the inertia and centrifugal force associated with rotation. Since the laundry is lifted and dropped one after another in this way, the positions are changed one after another, and the water supplied to the rotary drum 5 from the water injection cap 10b is almost uniformly sprinkled on the laundry and penetrates. Thereby, the detergent foam adhering and penetrating into the laundry by the foam generation process in the previous process further penetrates into the laundry by the water supplied from the water injection cap 10b. As described above, the laundry is washed with the impact force when it falls while the detergent foam penetrates the laundry as needed.
また、回転ドラム５を第１の所定回転速度より低い第２の所定回転速度で回転させることによって、取水口２０から取り込まれ回転ドラム５内に循環される循環水量を、後行程の張り付き行程における循環水量より低いかまたは循環されないようにしている。 Further, by rotating the rotary drum 5 at a second predetermined rotation speed lower than the first predetermined rotation speed, the amount of circulating water taken from the water intake 20 and circulated in the rotary drum 5 is changed in the sticking process of the subsequent process. The amount of water is less than the circulating water or is not circulated.
すなわち、長時間洗濯水を循環させて吐出口３２から吐出させると、吐出されたときに洗濯物や回転ドラム５の内周面と当たる衝撃によって洗濯水が泡立ち洗剤泡が多く発生してしまう。叩き洗い行程を行う第１の所定時間は、後の張り付き行程を行う第２の所定時間より長いため、叩き洗い行程では洗剤泡をできるだけ発生させないように低い回転速度で回転させることにより洗濯水の循環水量を抑えている。 That is, if the washing water is circulated for a long time and discharged from the discharge port 32, the washing water foams and a lot of detergent bubbles are generated due to the impact that hits the laundry or the inner peripheral surface of the rotating drum 5 when discharged. Since the first predetermined time for performing the washing process is longer than the second predetermined time for performing the subsequent sticking process, the washing water is rotated by rotating at a low rotation speed so as not to generate detergent bubbles as much as possible in the washing process. Circulating water volume is suppressed.
次にＳ１２１において、回転ドラム５を第１の所定回転速度で右回転させると、外槽６内の洗濯水はリブ３８により掻きあげられて取水口２０に取り込まれ、第１〜４の循環水路２２、２６、２７、２８を通って吐出口３２から回転ドラム５内に吐出され、回転ドラム５内に循環される。洗濯水を循環させることにより洗濯物に洗濯水をより多く浸透させることができる。 Next, in S121, when the rotating drum 5 is rotated clockwise at the first predetermined rotational speed, the washing water in the outer tub 6 is scraped up by the rib 38 and taken into the water intake 20, and the first to fourth circulation channels 22, 26, 27, and 28 are discharged from the discharge port 32 into the rotary drum 5 and circulated in the rotary drum 5. By circulating the washing water, the washing water can penetrate more into the laundry.
回転ドラム５を第２の所定時間（例えば、３０秒）回転させると（Ｓ１２２）、Ｓ１１７に戻って再び叩き洗い行程を開始する。これにより、張り付き行程で洗濯物に洗濯水を十分に浸透させた状態で叩き洗い行程を行うことができる。叩き洗い行程と張り付き行程を第３の所定時間（例えば、３３分）経過するまで繰り返して行い、第３の所定時間経過すると（Ｓ１２３）、次にすすぎ行程へ移る（Ｓ１２４）。 When the rotating drum 5 is rotated for a second predetermined time (for example, 30 seconds) (S122), the process returns to S117 to start the washing process again. Thereby, the tapping washing process can be performed in a state where the washing water is sufficiently infiltrated into the laundry in the sticking process. The beat washing process and the sticking process are repeated until a third predetermined time (for example, 33 minutes) elapses, and when the third predetermined time elapses (S123), the process proceeds to a rinsing process (S124).
この張り付き行程において第３の回転速度より低い第１の回転速度で回転させているのは、洗剤泡の発生を抑えるためである。すなわち、外槽６内に洗剤泡が多く発生し、第１〜４の循環水路２２、２６、２７、２８に洗剤泡が入ってしまうと、洗濯水よりも軽い洗剤泡は吐出口３２近傍に集まるため、洗濯水が回転ドラム５内へ吐出されるときの勢いが弱くなり、循環された洗濯水が洗濯物にかかりにくくなってしまう。そこで、泡生成行程での第３の所定回転速度よりも低い第１の所定回転速度で回転させることにより、洗剤泡の発生を抑えている。 The reason for rotating at the first rotation speed lower than the third rotation speed in this sticking process is to suppress the generation of detergent bubbles. That is, when a lot of detergent bubbles are generated in the outer tub 6 and the detergent bubbles enter the first to fourth circulation water channels 22, 26, 27, and 28, the detergent bubbles that are lighter than the washing water are near the discharge port 32. Therefore, the momentum when the washing water is discharged into the rotary drum 5 is weakened, and the circulated washing water is less likely to be applied to the laundry. Therefore, the generation of detergent bubbles is suppressed by rotating at a first predetermined rotation speed lower than the third predetermined rotation speed in the bubble generation process.
また、張り付き行程より前の第２の給水行程および叩き洗い行程において第１の所定水位になるよう給水を行っているため、外槽６の水位は泡生成行程での水位よりも高いことから、泡生成行程における第３の所定回転速度より低い第１の所定回転速度で回転させても、十分な循環水量を確保することができる。さらに、前の行程で給水することにより洗剤濃度を低くしているので、洗剤泡の発生を抑えることができる。 In addition, since water is supplied so as to be at the first predetermined water level in the second water supply process and the scouring process before the sticking process, the water level of the outer tub 6 is higher than the water level in the foam generation process, A sufficient amount of circulating water can be secured even if the first predetermined rotation speed is lower than the third predetermined rotation speed in the bubble generation process. Furthermore, since the detergent concentration is lowered by supplying water in the previous step, the generation of detergent bubbles can be suppressed.
以上のように叩き洗い行程と張り付き行程を繰り返し行うことにより、洗濯水を循環させて洗濯物により多くの洗濯水を浸透させることができ、洗濯物に洗濯水を十分浸透させた状態で叩き洗いを行うことができるので、洗濯水の浸透が不十分な状態で叩き洗いを行う場合に比べて洗浄力を向上させることができるともに、洗浄ムラを減らすことができる。 By repeatedly performing the washing and sticking process as described above, the washing water can be circulated so that more washing water can penetrate into the laundry, and the washing is performed with the washing water sufficiently infiltrated into the laundry. Therefore, the cleaning power can be improved and the unevenness in cleaning can be reduced as compared with the case where the washing is performed in a state where the penetration of the washing water is insufficient.
また、洗濯水を循環させることにより、外槽６内の水位を上げることなく洗浄力を上げることができる。さらに、同じ洗浄効果を得るための時間が短くなり、洗い時間を短縮することができる。 In addition, the washing power can be increased without increasing the water level in the outer tub 6 by circulating the washing water. Furthermore, the time for obtaining the same cleaning effect is shortened, and the cleaning time can be shortened.
以上の洗い行程（Ｓ１００〜Ｓ１２３）を行った後、すすぎ行程、脱水行程を行う。 After performing the above washing process (S100-S123), a rinse process and a dehydration process are performed.
なお、本実施の形態１では洗い行程において泡生成行程、叩き洗い行程および張り付き行程を行ったが、泡生成行程を行わずに叩き洗い行程と張り付き行程を行ってもよく、張り付き行程において外槽６内の洗濯水を吐出口３２より回転ドラム５内に循環し、洗濯物に洗濯水を十分に浸透させた状態で叩き洗いを行うことにより、洗浄力を向上させることができる。 In the first embodiment, the foam generation process, the tapping process, and the sticking process are performed in the washing process, but the tapping process and the sticking process may be performed without performing the foam generation process. The washing power in the inside 6 is circulated into the rotary drum 5 from the discharge port 32, and the washing power can be improved by performing the tapping washing in a state where the washing water is sufficiently infiltrated into the laundry.
また、本実施の形態１では、泡検知手段５３を温風送風経路５１内に設けた場合について説明したが、泡検知手段５３を設ける位置は外槽６内の洗濯泡の量を検知できる位置であればどこでもよく、その位置に応じて、各行程における回転ドラム５の回転方向を決めてもよい。さらに、泡検知手段５３に関係なく各行程の回転ドラム５の回転方向を決めてもよい。 Further, in the first embodiment, the case where the foam detection means 53 is provided in the hot air blowing path 51 has been described, but the position where the foam detection means 53 is provided is a position where the amount of washing foam in the outer tub 6 can be detected. As long as it is anywhere, the rotation direction of the rotary drum 5 in each stroke may be determined according to the position. Further, the rotation direction of the rotary drum 5 in each stroke may be determined regardless of the bubble detection means 53.
また、本実施の形態１では、乾燥機能を有するドラム式洗濯機について説明したが、乾燥機能を有しないドラム式洗濯機でも同様の効果を奏することができる。 In the first embodiment, the drum type washing machine having a drying function has been described. However, a drum type washing machine having no drying function can achieve the same effect.
また、リブ３８の形状は本実施の形態１で説明した形状に限定されず、洗濯水を掻きあげる形状であることが望ましいが、リブ３８を設けなくても洗濯水を循環させることができるのであればリブ３８を設けなくてもよい。 In addition, the shape of the rib 38 is not limited to the shape described in the first embodiment, and it is desirable that the shape of the rib 38 scoop up the washing water, but the washing water can be circulated without providing the rib 38. If so, the rib 38 may not be provided.
また、取水口２０、第１〜４の循環水路２２、２６、２７、２８および吐出口３２は本実施の形態１で説明した構成に限定されず、取水口２０は外槽６内の洗濯水を取り込むことができ、第１〜４の循環水路２２、２６、２７、２８は取水口２０から取り込んだ洗濯水を吐出口３２まで流すことができ、吐出口３２は取水口２０から取り込んだ洗濯水を回転ドラム５内に吐出できる構成であればどのような構成でもよい。 Further, the water intake 20, the first to fourth circulation water channels 22, 26, 27, and 28 and the discharge port 32 are not limited to the configuration described in the first embodiment, and the water intake 20 is the washing water in the outer tub 6. The first to fourth circulation channels 22, 26, 27, and 28 can flow the wash water taken from the water intake 20 to the discharge port 32, and the discharge port 32 is the laundry taken from the water intake 20. Any configuration is possible as long as water can be discharged into the rotating drum 5.
また、本実施の形態１では、回転ドラム５の回転速度を、泡生成行程と張り付き行程で異なる回転速度としたが、泡生成行程および張り付き行程において同じ回転速度で回転ドラム５を回転させても良く、張り付き行程において洗剤泡が過剰に発生しないのであれば張り付き行程での回転速度を泡生成行程での回転速度より高くしてもよい。張り付き行程において高い回転速度で回転させることにより、循環水量を増やすことができる。さらに、洗濯物の量に対応する設定水位に応じて、泡生成行程、叩き洗い行程および張り付き行程の回転速度をそれぞれ変えることにより循環水量を調節してもよい。 In the first embodiment, the rotational speed of the rotary drum 5 is different between the foam generation process and the sticking process. However, even if the rotary drum 5 is rotated at the same rotational speed in the foam generation process and the sticking process, If the detergent foam is not excessively generated in the sticking process, the rotational speed in the sticking process may be higher than the rotational speed in the foam generating process. By rotating at a high rotation speed in the sticking process, the amount of circulating water can be increased. Furthermore, the amount of circulating water may be adjusted by changing the rotational speeds of the foam generation process, the tapping process, and the sticking process according to the set water level corresponding to the amount of laundry.
また、本実施の形態１では、叩き洗い行程における循環水量を、張り付き行程での循環水量より少ないかまたは循環させないように回転速度を調節したが、回転速度を上げて洗濯水を十分循環させるようにしてもよい。この場合、洗剤泡が発生し叩き洗いによる洗浄力が薄れる可能性があるが、洗濯物により多くの洗濯水を浸透させることができるので、洗剤による洗浄力を上げることができる。 In the first embodiment, the rotational speed is adjusted so that the circulating water amount in the tapping process is less than the circulating water amount in the sticking process or not circulated. However, the rotational speed is increased so that the washing water is sufficiently circulated. It may be. In this case, detergent bubbles may be generated and the washing power by tapping may be weakened. However, since a large amount of washing water can be permeated into the laundry, the washing power by the detergent can be increased.
また、洗剤溶解行程はバランス行程より前に設けてもよく、洗濯水が回転ドラム５内へ循環される前に洗剤を溶解することにより、洗剤１３ｂが洗濯水に溶けず洗濯物に付着してしまうのを防ぐことができる。 Further, the detergent dissolution process may be provided before the balance process, and by dissolving the detergent before the washing water is circulated into the rotating drum 5, the detergent 13b does not dissolve in the washing water and adheres to the laundry. Can be prevented.
以上のように、本発明にかかるドラム式洗濯機は、循環ポンプを用いずに叩き洗いすることができるため、洗浄力を向上させることができるともに洗浄ムラを減少させることが可能となるので、洗濯機に限らず、回転ドラムを回転させながら洗浄を行う各種機器、装置にも広く適用できるものである。 As described above, since the drum type washing machine according to the present invention can be washed without using a circulation pump, it is possible to improve cleaning power and reduce cleaning unevenness. The present invention can be widely applied not only to a washing machine but also to various devices and apparatuses that perform cleaning while rotating a rotating drum.
１ 筐体
２ 外槽本体
３ 外槽カバー
５ 回転ドラム
６ 外槽
１６ 制御手段
２０ 取水口
２２ 第１の循環水路
２６ 第２の循環水路
２７ 第３の循環水路
２８ 第４の循環水路
３２ 吐出口
DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Outer tank main body 3 Outer tank cover 5 Rotating drum 6 Outer tank 16 Control means 20 Water intake 22 1st circulating water path 26 2nd circulating water path 27 3rd circulating water path 28 4th circulating water path 32 Discharge port
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
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| JP2005273337A JP4466521B2 (en) | 2005-09-21 | 2005-09-21 | Drum washing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005273337A JP4466521B2 (en) | 2005-09-21 | 2005-09-21 | Drum washing machine |
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| Publication Number | Publication Date |
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| JP2007082651A true JP2007082651A (en) | 2007-04-05 |
| JP4466521B2 JP4466521B2 (en) | 2010-05-26 |
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| JP2005273337A Expired - Fee Related JP4466521B2 (en) | 2005-09-21 | 2005-09-21 | Drum washing machine |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009240548A (en) * | 2008-03-31 | 2009-10-22 | Panasonic Corp | Washing machine |
| CN101831779A (en) * | 2009-03-09 | 2010-09-15 | 松下电器产业株式会社 | Tumbling-box washing machine |
| JP2010207311A (en) * | 2009-03-09 | 2010-09-24 | Panasonic Corp | Drum-type washing machine |
| JP2011245268A (en) * | 2010-04-26 | 2011-12-08 | Toshiba Corp | Drum-type washing machine |
| WO2013008362A1 (en) * | 2011-07-08 | 2013-01-17 | パナソニック株式会社 | Drum-type washing machine |
| JP2013017556A (en) * | 2011-07-08 | 2013-01-31 | Panasonic Corp | Drum washing machine |
| JP2013052057A (en) * | 2011-09-02 | 2013-03-21 | Panasonic Corp | Drum type washing machine |
| JP2013052056A (en) * | 2011-09-02 | 2013-03-21 | Panasonic Corp | Drum type washing machine |
| JP2016106673A (en) * | 2014-12-02 | 2016-06-20 | シャープ株式会社 | Washing machine |
| WO2020191885A1 (en) * | 2019-03-27 | 2020-10-01 | 无锡小天鹅电器有限公司 | Clothing treatment apparatus, control method, control system, and readable storage medium |
-
2005
- 2005-09-21 JP JP2005273337A patent/JP4466521B2/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009240548A (en) * | 2008-03-31 | 2009-10-22 | Panasonic Corp | Washing machine |
| CN101831779A (en) * | 2009-03-09 | 2010-09-15 | 松下电器产业株式会社 | Tumbling-box washing machine |
| JP2010207312A (en) * | 2009-03-09 | 2010-09-24 | Panasonic Corp | Drum-type washing machine |
| JP2010207311A (en) * | 2009-03-09 | 2010-09-24 | Panasonic Corp | Drum-type washing machine |
| CN101831779B (en) * | 2009-03-09 | 2011-12-14 | 松下电器产业株式会社 | Drum-type washer |
| JP2011245268A (en) * | 2010-04-26 | 2011-12-08 | Toshiba Corp | Drum-type washing machine |
| WO2013008362A1 (en) * | 2011-07-08 | 2013-01-17 | パナソニック株式会社 | Drum-type washing machine |
| JP2013017556A (en) * | 2011-07-08 | 2013-01-31 | Panasonic Corp | Drum washing machine |
| JP2013052057A (en) * | 2011-09-02 | 2013-03-21 | Panasonic Corp | Drum type washing machine |
| JP2013052056A (en) * | 2011-09-02 | 2013-03-21 | Panasonic Corp | Drum type washing machine |
| JP2016106673A (en) * | 2014-12-02 | 2016-06-20 | シャープ株式会社 | Washing machine |
| WO2020191885A1 (en) * | 2019-03-27 | 2020-10-01 | 无锡小天鹅电器有限公司 | Clothing treatment apparatus, control method, control system, and readable storage medium |
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