JP4634260B2 - Drum washing machine - Google Patents

Drum washing machine Download PDF

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Publication number
JP4634260B2
JP4634260B2 JP2005260099A JP2005260099A JP4634260B2 JP 4634260 B2 JP4634260 B2 JP 4634260B2 JP 2005260099 A JP2005260099 A JP 2005260099A JP 2005260099 A JP2005260099 A JP 2005260099A JP 4634260 B2 JP4634260 B2 JP 4634260B2
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water
drum
washing machine
water tank
detergent
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JP2007068804A (en
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治夫 井田
真二 松岡
智 児玉
正 犬塚
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Priority to JP2005260099A priority Critical patent/JP4634260B2/en
Priority to TW095127515A priority patent/TW200714774A/en
Priority to CN 200610151630 priority patent/CN100510230C/en
Priority to CN 200620133071 priority patent/CN200988908Y/en
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Description

本発明は、水槽内に配設した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浄する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 cleans laundry stored in a rotating drum by rotationally driving a rotating drum disposed in a water tank.

ドラム式洗濯機は回転ドラムの回転軸心が水平方向になるようにしたものが一般的であるが、洗濯物の出し入れに際して腰を屈める必要があるため作業がしづらく、正面側に広いスペースが要求されるため、洗面所などの狭い設置環境に設置し難いものとなる。このドラム式洗濯機の基本的な課題を解決すべく本願出願人は、回転ドラム及びそれを収容する水槽を正面側から背面側に向けて傾斜させて洗濯機筐体内に配設した斜めドラム形式のドラム式洗濯機を提案した(特許文献1参照)。この斜めドラム形式のドラム式洗濯機により、子供(幼児を除く)から大人までの身長差があっても、車椅子を使用する障害者であっても、扉体8を開いて回転ドラム5に洗濯物を出し入れする作業が行いやすく、出し入れに際して腰を屈めることがないので、洗面所などの狭いスペースに設置することもできる。   Drum-type washing machines are generally designed so that the rotation axis of the rotating drum is in the horizontal direction, but it is difficult to work because it is necessary to bend down when putting in and out the laundry, and there is a large space on the front side. Therefore, it is difficult to install in a narrow installation environment such as a washroom. In order to solve the basic problem of this drum type washing machine, the applicant of the present application has proposed an inclined drum type in which a rotating drum and a water tub that accommodates the rotating drum are inclined from the front side toward the back side and are arranged in the washing machine casing. Proposed a drum-type washing machine (see Patent Document 1). This slanted drum-type washing machine opens the door body 8 and cleans it on the rotating drum 5 regardless of height differences from children (excluding infants) to adults or disabled persons using wheelchairs. It is easy to work in and out, and it does not bend you when you put it in or out, so it can be installed in a narrow space such as a washroom.

特開2005−137641号公報JP 2005-137441 A

しかしながら、水槽が斜めに傾斜していると、洗濯開始時に水槽内に給水と同時に供給された洗剤は水槽の底部である有底円筒形の底に溜まることになる。また、水槽の最下部位には排水口が形成されるので、排水口とその先にある排水弁との間のポケット状の窪みに洗剤が溜まりやすくなる。水槽内に水と共に供給された洗剤は、水槽内で回転ドラムが回転することにより攪拌されて水に溶け込んで洗濯水となるが、排水口のポケットや水槽の底角に溜まった洗剤は回転ドラムの回転に伴う水流の影響が及び難く、洗濯が終了するまで残ってしまうことにもなる。   However, if the water tank is inclined obliquely, the detergent supplied simultaneously with the water supply into the water tank at the start of washing accumulates on the bottomed cylindrical bottom that is the bottom of the water tank. Moreover, since a drain outlet is formed in the lowest part of a water tank, detergent becomes easy to accumulate in the pocket-shaped hollow between a drain outlet and the drain valve in the tip. The detergent supplied with water in the aquarium is agitated by the rotating drum rotating in the aquarium and dissolved in the water to become washing water. However, the detergent accumulated in the pocket of the drain and the bottom corner of the aquarium is the rotating drum. It is difficult to be affected by the water flow accompanying the rotation of the water, and it will remain until washing is completed.

洗剤を水に均一に溶け込ませるには、水と洗剤とを強く攪拌する必要があるが、円筒形の水槽内で円筒形の回転ドラムを回転させるドラム式洗濯機では強力な攪拌水流を発生させることは構造的に困難であり、投入した洗剤の全量が水に溶け込めずに無駄に排出されることになりがちであり、水に溶けずに残った洗剤が洗濯物に付着することにもなる。特に、斜めドラム形式のドラム式洗濯機では前述のように洗剤が特定場所に溜まりやすくなるので、洗剤を無駄なく水に溶け込ませることができる構造を設けることが要求されていた。   In order for the detergent to be uniformly dissolved in the water, it is necessary to vigorously agitate the water and the detergent, but a drum-type washing machine that rotates a cylindrical rotating drum in a cylindrical water tank generates a strong stirring water flow. This is difficult in terms of structure, and the entire amount of detergent that is thrown in tends to be wasted without being dissolved in water, and the detergent remaining without being dissolved in water will also adhere to the laundry. . In particular, in the drum-type washing machine of the oblique drum type, the detergent easily accumulates in a specific place as described above, and therefore, it has been required to provide a structure that can dissolve the detergent in water without waste.

本発明が目的とするところは、斜めドラム形式のドラム式洗濯機にあっても投入された洗剤を水に充分に溶け込ませることができる構造を設けたドラム式洗濯機を提供することにある。   An object of the present invention is to provide a drum-type washing machine provided with a structure capable of sufficiently dissolving the introduced detergent in water even in a drum-type washing machine of an oblique drum type.

上記目的を達成するための本発明に係るドラム式洗濯機は、回転駆動される有底円筒形の回転ドラムを有底円筒形に形成された水槽内に収容し、前記水槽の最下部位から下方に向けて底面が略水平方向となるように貯水空間を形成し、前記底面の前方側最下部に排水口を開口させてなる水槽ユニットが、洗濯機筐体の正面側から背面側に向けて前記回転ドラムの回転軸心が下向き傾斜となり、前記排水口が前記水槽内部の最下点となるように洗濯機筐体内に配設され、前記水槽の上方かつ前記貯水空間よりも前記洗濯機筐体の背面寄りの位置に洗剤混合水を給水する給水口を前記水槽内に開口させてなることを特徴とする。 In order to achieve the above object, a drum type washing machine according to the present invention accommodates a rotationally driven bottomed cylindrical rotating drum in a water tank formed in a bottomed cylindrical shape, from the bottom part of the water tank. bottom to form a water storage space to be substantially horizontal direction downward, water tank unit obtained by opening the front bottom to the water outlet of the bottom, toward the rear side from the front side of the washing machine casing the rotation axis of the rotary drum becomes downward inclination, the drain port is disposed in the washing machine housing such that the lowest point of the interior of the water tub, the washing machine than the upper and the water storage space of the water tank Te A water supply port for supplying detergent mixed water to a position near the back of the housing is opened in the water tank .

上記構成によれば、水槽の上方背面寄りの位置に設けられた給水口から洗剤を混合した洗剤混合水が水槽内に給水されると、水槽の面に沿って流下し、水槽の最下部位にある貯水空間に流入する。貯水空間の底面は略水平方向になっているので、流入した洗剤混合水の中の水は最下点である排水口に向けて流れるが、洗剤は貯水空間の底面との摩擦抵抗により排水口に流れ込まず貯水空間の底面に留まった状態になる。水槽に所定量の洗剤混合水が給水され、回転ドラムが回転駆動されることによって生じた水流により貯水空間内には渦流が発生して攪拌され、渦流の強い攪拌により洗剤は水に溶け込んだ状態となる。 According to the above configuration, the detergent mixed water obtained by mixing the detergent from the water supply port provided at a position above the rear side of the water tank is water in the water tank, flows down along the back of the water tank, the top of the water tank It flows into the water storage space in the lower part. Since the bottom surface of the water storage space is substantially horizontal, the water in the detergent mixture that has flowed in flows toward the drainage port, which is the lowest point, but the detergent drains due to frictional resistance with the bottom surface of the water storage space. It stays on the bottom of the water storage space . A state in which a predetermined amount of detergent mixed water is supplied to the aquarium and a vortex is generated in the water storage space due to the water flow generated by rotating the rotating drum, and the detergent is dissolved in the water due to strong vortex agitation It becomes.

上記構成において、貯水空間内に、その底面と略平行にヒータを配設することが好適で、給水された水をヒータで加熱すると、洗剤が水に溶解しやすくなるばかりでなく、洗剤に適した洗濯水の温度を得ることができ、洗濯性能を向上させることができる。   In the above configuration, it is preferable to arrange a heater in the water storage space substantially parallel to the bottom surface. When the supplied water is heated by the heater, the detergent is not only easily dissolved in water but also suitable for the detergent. Washing water temperature can be obtained, and washing performance can be improved.

本発明によれば、回転ドラム及び水槽を傾斜配置して回転ドラムに対して洗濯物を出し入れする作業を容易にした斜めドラム形式のドラム式洗濯機であっても水に洗剤を混合して給水された洗剤混合水の中の洗剤は水槽の最下部位に設けられた貯水空間の底面に集められ。回転ドラムが回転駆動されると、貯水空間には渦流が発生して洗剤と水は強力に攪拌されるので、水に洗剤が充分に溶け込んだ洗濯水が得られる。従って、溶け残った洗剤が無駄に排出されることもなく、洗剤が充分に溶け込んだ洗濯水により洗濯性能を向上させることができる。 According to the present invention, even in a drum-type washing machine of an inclined drum type in which a rotating drum and a water tank are disposed at an inclination to facilitate the operation of taking in and out laundry with respect to the rotating drum, detergent in the detergent mixed water is Ru collected in the bottom of the water storage space provided at the lowermost portion of the tank. When the rotating drum is driven to rotate, eddy currents are generated in the water storage space and the detergent and water are strongly stirred, so that washing water in which the detergent is sufficiently dissolved in water can be obtained. Therefore, the washing performance can be improved by the washing water in which the detergent is sufficiently dissolved, without the detergent remaining undissolved being discharged unnecessarily.

実施形態に係るドラム式洗濯機の構成を示す断面図。Sectional drawing which shows the structure of the drum type washing machine which concerns on embodiment. 洗濯水加熱槽の配設構造を示す(a)は平面図、(b)は側面図。(A) which shows the arrangement structure of a washing water heating tub is a top view, (b) is a side view. 温度ヒューズの取付構造を示す断面図。Sectional drawing which shows the attachment structure of a thermal fuse.

図1は、実施形態に係るドラム式洗濯機1の構成を断面図として示すもので、回転ドラム5と、それを収容する水槽3とを水平方向から上向き方向に角度θで傾斜させ、回転ドラム5及び水槽3の開口部が水平方向から上向きとなるようにして洗濯機筐体2内に配設し、洗濯機筐体2の正面を上向きに傾斜させた傾斜面に設けられた扉体8から回転ドラム5内への洗濯物の出し入れを容易にした斜めドラム形式のドラム式洗濯機1に構成されている。因みに、本構成における回転ドラム5の傾斜角度θは、本願発明者らによる様々な観点からの調査研究により、θ=25±5度に設定するのが最適の角度であるとの結論を得ており、子供(幼児を除く)から大人までの身長差があっても、車椅子を使用する障害者であっても、扉体8を開いて回転ドラム5に洗濯物を出し入れする作業が行いやすく、出し入れに際して腰を屈めることがないので、洗面所などの狭いスペースに設置することもできるように構成されている。   FIG. 1 shows a configuration of a drum type washing machine 1 according to an embodiment as a cross-sectional view. A rotating drum 5 and a water tub 3 that accommodates the rotating drum 5 are inclined at an angle θ from a horizontal direction to an upward direction. 5 and the opening 8 of the water tub 3 are arranged in the washing machine casing 2 so that the opening of the washing machine casing 3 faces upward from the horizontal direction, and the door body 8 is provided on an inclined surface in which the front surface of the washing machine casing 2 is inclined upward. The drum-type washing machine 1 in the form of an oblique drum that makes it easy to put the laundry into and out of the rotary drum 5. By the way, according to the research by the inventors of the present application from various viewpoints, it is concluded that the optimum angle is set to θ = 25 ± 5 degrees. Even if there is a difference in height from children (excluding infants) to adults, even people with disabilities using wheelchairs, it is easy to open the door 8 and put the laundry in and out of the rotating drum 5, Since the waist does not bend in and out, it is configured to be installed in a narrow space such as a washroom.

前記回転ドラム5は、有底円筒形の開口部側を洗濯機筐体2の正面側に、底面側を洗濯機筐体2の背面側にして、回転軸心Rが正面側から背面側に向けて角度θで下向き傾斜となるようにして水槽3内に配置され、その回転軸15は水槽3の背面に設けられた軸受16で軸支されている。回転軸15には従動プーリ18が装着され、水槽3の下面に取り付けられたドラム駆動モータ4の回転駆動軸に装着された駆動プーリ17との間に駆動ベルト19が架設されたベルト駆動構造に構成され、ドラム駆動モータ4によって回転ドラム5は回転駆動される。回転ドラム5の周面には多数の透孔20が形成されて水槽3内との間で水の流通がなされるように構成され、回転ドラム5の内周面の複数位置には攪拌突起21が設けられ、回転ドラム5の回転により洗濯物を上方に持ち上げ、上方から落下させる叩き洗いの作用がなされるように構成されている。   The rotating drum 5 has a bottomed cylindrical opening side on the front side of the washing machine housing 2 and a bottom surface on the back side of the washing machine housing 2 so that the rotation axis R is from the front side to the back side. The rotating shaft 15 is pivotally supported by a bearing 16 provided on the back surface of the water tank 3 so as to be inclined downward at an angle θ. A driven pulley 18 is attached to the rotating shaft 15, and a belt driving structure in which a driving belt 19 is installed between the rotating pulley 15 and the driving pulley 17 attached to the rotating drive shaft of the drum drive motor 4 attached to the lower surface of the water tank 3. The rotary drum 5 is rotationally driven by the drum drive motor 4. A large number of through holes 20 are formed on the peripheral surface of the rotating drum 5 so that water can flow between the inside of the water tank 3, and stirring protrusions 21 are provided at a plurality of positions on the inner peripheral surface of the rotating drum 5. Is provided, and the washing drum is lifted upward by the rotation of the rotating drum 5 and is configured to be beaten and dropped from above.

前記水槽3は、水槽本体3aと水槽蓋体3bとを連結した有底円筒形に形成され、収容した回転ドラム5と同様に正面側から背面側に向けて下向き傾斜させて洗濯機筐体2内に図示しないサスペンション構造により支持されている。この水槽3は、軽量化を図ると同時に様々な構成要素の構築及び接続が容易に行い得るように樹脂成形によって形成されている。水槽3の正面側には洗濯物出入口6が開口し、その開口中心Cは回転ドラム5の開口中心(回転軸心Rと一致)から上方に偏心した位置とし、扉体8の中心も洗濯物出入口6の中心線上に略一致させている。このように洗濯物出入口6及び扉体8をその中心位置Cが回転ドラム5の回転軸心Rから上方に偏心した位置になるように構成すると、円形に形成される扉体8の直径や洗濯物出入口6の開口径が制約を受ける状態にあっても扉体8を開き、洗濯物出入口6を通して回転ドラム5の内部を覗いたときに死角となる部位が少なくなる。従って、回転ドラム5内に収容した洗濯物が広範囲にわたって見えるので、洗濯物の取り出し忘れなどが生じ難くなる。特に、本実施形態に係るドラム式洗濯機1のように回転ドラム5を傾斜配置し、回転ドラム5の傾斜角度に対応させた洗濯機筐体2の傾斜面に扉体8を設けた構成においては、より広範囲に回転ドラム5の内部を見渡すことができる。   The water tank 3 is formed in a bottomed cylindrical shape in which a water tank main body 3a and a water tank lid body 3b are connected, and is inclined downward from the front side to the back side in the same manner as the rotating drum 5 accommodated in the washing machine casing 2. It is supported inside by a suspension structure (not shown). The water tank 3 is formed by resin molding so that various components can be easily constructed and connected while reducing the weight. A laundry entrance 6 is opened on the front side of the water tub 3, and the opening center C thereof is positioned upward from the opening center of the rotating drum 5 (coincident with the rotational axis R), and the center of the door 8 is also the laundry. It is made to substantially coincide with the center line of the entrance 6. When the laundry entrance / exit 6 and the door body 8 are configured such that the center position C thereof is offset upward from the rotation axis R of the rotary drum 5, the diameter of the door body 8 formed in a circle and the laundry Even when the opening diameter of the article entrance / exit 6 is restricted, the number of parts that become blind spots when the door body 8 is opened and the inside of the rotating drum 5 is viewed through the laundry entrance / exit 6 is reduced. Therefore, since the laundry accommodated in the rotating drum 5 can be seen over a wide range, it becomes difficult to forget to take out the laundry. In particular, in the configuration in which the rotating drum 5 is inclined and the door body 8 is provided on the inclined surface of the washing machine housing 2 corresponding to the inclination angle of the rotating drum 5 as in the drum type washing machine 1 according to the present embodiment. Can look over the interior of the rotating drum 5 in a wider range.

しかし、回転ドラム5の開口径より洗濯物出入口6の開口径が小さく、回転ドラム5の回転軸心Rから洗濯物出入口6の中心位置Cが上方に偏っていると、図示するように回転ドラム5の開口端に洗濯物出入口6の下方がオーバーラップすることになる。この状態で回転ドラム5の開口部から洗濯物の一部が飛び出た場合に、回転ドラム5の回転に伴って飛び出た部分が回転ドラム5と水槽3との間に噛み込まれてしまうことがある。このような洗濯物の噛み込みを防止するために、洗濯物出入口6の周縁部を覆い、回転ドラム5の開口部にオーバーラップする部分を中心に回転ドラム5内に向けて突出する噛み込み防止突起13を形成した出入口枠体14が設けられている。前記噛み込み防止突起13は、回転ドラム5の開口部とオーバーラップする量が大きくなる下方の突出量が大きくなるように形成され、噛み込み防止突起13は回転ドラム5の開口部から内側に突出しているので、洗濯物の量が多い場合に回転ドラム5の回転に伴って洗濯物が開口部から飛び出ることを抑えるように作用し、回転ドラム5の開口部から飛び出した洗濯物が水槽3との間に噛み込んでしまうことが防止できる。   However, when the opening diameter of the laundry entrance / exit 6 is smaller than the opening diameter of the rotating drum 5 and the center position C of the laundry entrance / exit 6 is offset upward from the rotation axis R of the rotating drum 5, the rotating drum as illustrated in FIG. The lower part of the laundry entrance / exit 6 overlaps the opening end of 5. In this state, when a part of the laundry jumps out of the opening of the rotary drum 5, the part that jumps out with the rotation of the rotary drum 5 may be caught between the rotary drum 5 and the water tub 3. is there. In order to prevent the biting of the laundry, the biting prevention of covering the peripheral portion of the laundry entrance 6 and protruding toward the inside of the rotating drum 5 with the portion overlapping the opening of the rotating drum 5 as the center. An entrance / exit frame 14 in which the protrusion 13 is formed is provided. The biting prevention protrusion 13 is formed so that a downward protrusion amount that increases the amount of overlap with the opening of the rotating drum 5 is increased, and the biting prevention protrusion 13 protrudes inward from the opening of the rotating drum 5. Therefore, when the amount of laundry is large, it acts to prevent the laundry from jumping out of the opening with the rotation of the rotating drum 5, and the laundry jumping out of the opening of the rotating drum 5 becomes the water tank 3. It is possible to prevent biting between the two.

また、噛み込み防止突起13は回転ドラム5によって攪拌される洗濯物が接触する状態になりやすいため、接触面積が大きいと洗濯物が張り付いて接触抵抗が増加するため、洗濯物との間で擦れ摩擦が発生する度合いが大きくなり、弱い繊維質の洗濯物では擦れ摩擦の繰り返しにより損傷が生じる恐れがある。そこで、噛み込み防止突起13の表面形状は、図1に断面図として示すように、平坦面を無くしたアール面に形成している。噛み込み防止突起13の表面がアール形状であることにより、洗濯物との接触面積が小さくなり、接触摩擦が小さくなるので、洗濯物に損傷を与えることが抑制される。更に接触抵抗の低減を図るためには、噛み込み防止突起13に多数の孔又は凹部を形成すると、洗濯物との接触面積を低下させることができる。   Further, the biting prevention protrusion 13 is likely to come into contact with the laundry stirred by the rotary drum 5, so that if the contact area is large, the laundry sticks and contact resistance increases, so that the contact resistance increases between the laundry and the laundry. The degree of occurrence of rubbing friction increases, and there is a possibility that damage will occur due to repeated rubbing friction in a weak fibrous laundry. Therefore, the surface shape of the biting prevention protrusion 13 is formed in a rounded surface without a flat surface, as shown in a sectional view in FIG. Since the surface of the biting prevention protrusion 13 is rounded, the contact area with the laundry is reduced and the contact friction is reduced, so that the laundry is prevented from being damaged. In order to further reduce the contact resistance, the contact area with the laundry can be reduced by forming a large number of holes or recesses in the biting prevention protrusion 13.

また、本実施形態に係るドラム式洗濯機1においては、水に洗剤を混合させた洗剤混合水を回転ドラム5の回転に伴う水流により洗剤と水とを攪拌して水に洗剤を充分に溶け込ませるために、水槽3の最下部位に洗濯水加熱槽(貯水空間)10が設けられている。この洗濯水加熱槽10には、洗剤の性能が充分に発揮される温度に加熱して洗浄効果を向上させ、洗濯物の種類に適した水温が得られるように、水槽3内に注水された洗剤混合水を加熱するヒータ11が配設されている。洗濯水加熱槽10は、その底面は略水平方向に形成され、底面の前方側に開口させた排水口22の位置が最下点となるように若干の傾斜を設けて配置され、ヒータ11は底面と略平行になるように配設されている。   Further, in the drum type washing machine 1 according to the present embodiment, the detergent and water mixed with the detergent mixed with water are agitated with the water flow accompanying the rotation of the rotating drum 5 to sufficiently dissolve the detergent in the water. Therefore, a washing water heating tank (water storage space) 10 is provided at the lowermost part of the water tank 3. The washing water heating tank 10 was poured into the water tank 3 so as to improve the washing effect by heating to a temperature at which the performance of the detergent was sufficiently exhibited, and to obtain a water temperature suitable for the type of laundry. A heater 11 for heating the detergent mixture water is provided. The bottom surface of the washing water heating tank 10 is formed in a substantially horizontal direction, and is disposed with a slight inclination so that the position of the drain port 22 opened to the front side of the bottom surface is the lowest point. It is arrange | positioned so that it may become substantially parallel to a bottom face.

図2(a)(b)は、前記洗濯水加熱槽10に配設されたヒータ11の装着構造を示すもので、洗濯水加熱槽10の内壁面はステンレス薄板によって形成された遮熱板33によって被覆され、この遮熱板33に取り付けられたヒータ保持金具34により屈曲形成したヒータ11の先端部が保持されている。ヒータ11は洗濯水加熱槽10の後側壁に形成された穴から洗濯水加熱槽10内に挿入され、先端部をヒータ保持金具34に挿入し、側壁に設けられた穴がヒータ支持体32によって防水構造に閉じられるように固定される。ヒータ保持金具34は、ステンレス薄板を略T字状にプレス抜きし、そのT字左右方向の幅の広い部分の両翼をヒータ11を挟持できる間隔を設けて互いに中央に折り返して保持部34aに形成し、T字縦方向の幅の狭い部分は保持金具取付部34bとして遮熱板33の底面後方側に溶接固定されている。箱状の保持部34aは上面で分割された構造になり、下面は排水口22の上方に位置し、排水口22のほぼ全面を覆う大きさを有している。また、洗濯水加熱槽10の一外側面には温度ヒューズ35が装着され、それに対向する遮熱板33にはヒータ11の一端側を挟持してヒータ11の熱を温度ヒューズ35に伝熱させるための伝熱板36が遮熱板33の側面に取り付けられている。   2 (a) and 2 (b) show a mounting structure of the heater 11 disposed in the washing water heating tank 10, and the inner wall surface of the washing water heating tank 10 is a heat shield plate 33 formed of a stainless steel thin plate. The tip of the heater 11 bent and formed by the heater holding metal fitting 34 attached to the heat shield plate 33 is held. The heater 11 is inserted into the washing water heating tub 10 through a hole formed in the rear side wall of the washing water heating tub 10, the tip portion is inserted into the heater holding metal 34, and the hole provided in the side wall is formed by the heater support 32. Fixed to be closed to a waterproof structure. The heater holding bracket 34 is formed in a holding portion 34a by pressing a stainless thin plate into a substantially T shape and folding back both sides of the wide portion of the T shape in the left-right direction to the center with a space to hold the heater 11. A portion with a narrow width in the T-shaped vertical direction is welded and fixed to the rear side of the bottom surface of the heat shield plate 33 as a holding bracket mounting portion 34b. The box-shaped holding portion 34 a has a structure divided on the upper surface, and the lower surface is positioned above the drain port 22 and has a size covering almost the entire surface of the drain port 22. Further, a thermal fuse 35 is attached to one outer side surface of the washing water heating tank 10, and one end side of the heater 11 is sandwiched between the opposite heat shield plates 33 to transfer the heat of the heater 11 to the thermal fuse 35. A heat transfer plate 36 is attached to the side surface of the heat shield plate 33.

図3に示すように、前記伝熱板36はその取付基部が遮熱板33の側面に形成された凹部内に溶接接合されているので、遮熱板33を洗濯水加熱槽10内に装着すると凹部の外面が洗濯水加熱槽10の側面に密着し、ヒータ11の温度を洗濯水加熱槽10の側面を介して温度ヒューズ35に効率よく伝熱させることができる。温度ヒューズ35はその温度検知面が洗濯水加熱槽10の外側面に密着するように温度ヒューズ取付金具39に取り付けられており、前記伝熱板36から洗濯水加熱槽10の側面を介して伝熱してきたヒータ11の温度を検知する。前記温度ヒューズ取付金具39には、左右一対の付勢片40と固定片41とが形成されており、洗濯水加熱槽10の側面から所定間隔を隔てて設けられているリブ37と洗濯水加熱槽10の外側面との間に前記付勢片40が嵌入するように押し入れると、付勢片40がリブ37に押されて温度ヒューズ取付金具39を洗濯水加熱槽10の外側面に押し付けるように付勢するので、温度ヒューズ取付金具39に取り付けられた温度ヒューズ35の温度検知面が洗濯水加熱槽10の外側面に密着する。この状態は固定片41を水槽3に設けられているボス38にネジ固定することにより維持される。   As shown in FIG. 3, the heat transfer plate 36 is welded and joined to a recess formed on the side surface of the heat shield plate 33 so that the heat shield plate 33 is mounted in the washing water heating tank 10. Then, the outer surface of the concave portion is in close contact with the side surface of the washing water heating tank 10, and the temperature of the heater 11 can be efficiently transferred to the temperature fuse 35 through the side surface of the washing water heating tank 10. The temperature fuse 35 is attached to the temperature fuse mounting bracket 39 so that its temperature detection surface is in close contact with the outer surface of the washing water heating tank 10, and is transferred from the heat transfer plate 36 through the side surface of the washing water heating tank 10. The temperature of the heated heater 11 is detected. The thermal fuse mounting bracket 39 is formed with a pair of left and right urging pieces 40 and a fixed piece 41, and a rib 37 provided at a predetermined interval from the side surface of the washing water heating tank 10 and washing water heating. When the urging piece 40 is pushed in between the outer surface of the tank 10 and the urging piece 40 is inserted, the urging piece 40 is pushed by the rib 37 to press the temperature fuse mounting bracket 39 against the outer surface of the washing water heating tank 10. Thus, the temperature detection surface of the temperature fuse 35 attached to the temperature fuse mounting bracket 39 is in close contact with the outer surface of the washing water heating tank 10. This state is maintained by fixing the fixing piece 41 to the boss 38 provided in the water tank 3 with screws.

上記洗濯水の加熱構造は、洗濯水加熱槽10に洗濯水が満たされてヒータ11が水中に没した状態にしてヒータ11に通電する必要があり、ヒータ11が空気中に露出した状態で通電されると、異常温度上昇により空気中に露出した部分が変形して回転ドラム5に接触したり、樹脂によって形成された水槽3、特に洗濯水加熱槽10を熱変形させたりする状態になる。また、温度上昇が継続され過熱状態になると、樹脂製の水槽3に溶解を生じさせ、溶解した樹脂が発火する恐れもある。上記構成では洗濯水加熱槽10は水槽3の最下部に排水口22につながる略水平面を形成した凹部になっているので、洗濯中の水位変動によって洗濯水加熱槽10内から洗濯水がなくなることはなく、ヒータ11が空気中に露出して異常温度上昇することが防止できる。   In the washing water heating structure, it is necessary to energize the heater 11 with the washing water heating tank 10 filled with the washing water and the heater 11 submerged in the water, and the heater 11 is energized with the heater 11 exposed to the air. If it does, the part exposed in the air will deform | transform and contact with the rotating drum 5 by abnormal temperature rise, or it will be in the state which carries out the heat deformation of the water tank 3, especially the washing water heating tank 10 formed with resin. In addition, if the temperature rise continues and an overheated state occurs, dissolution may occur in the resin water tank 3 and the dissolved resin may ignite. In the above-described configuration, the washing water heating tank 10 is a recess having a substantially horizontal plane connected to the drain port 22 at the bottom of the water tank 3, so that the washing water disappears from the washing water heating tank 10 due to fluctuations in the water level during washing. It is possible to prevent the heater 11 from being exposed to the air and causing an abnormal temperature rise.

また、故障や制御不良等によってヒータ11の温度が異常上昇した場合でも洗濯水加熱槽10の内周壁は遮熱板33で被覆されているため、高熱が洗濯水加熱槽10に輻射されて変形や溶解に至ることが防止される。また、ヒータ11の排水口22上に位置するヒータ保持金具34の保持部34aの下面によって排水口22は遮蔽されているので、ヒータ11からの輻射熱を保持部34aで遮ることができ、ヒータ11の熱輻射が直接排水口22に及ばず、排水口22及びそれに接続された排水管などの樹脂部材に及ぼす影響が抑制される。また、ヒータ保持金具34の保持部34aの天面はヒータ11の上部を遮蔽しているので、ヒータ11からの輻射熱が鏡面仕上げされた回転ドラム5で反射して水槽3の遮熱板33で被覆されていない部位に熱影響を及ぼすことを抑制する効果もある。   Even when the temperature of the heater 11 rises abnormally due to a failure or poor control, the inner peripheral wall of the washing water heating tank 10 is covered with the heat shield plate 33, so that high heat is radiated to the washing water heating tank 10 and deforms. And dissolution is prevented. In addition, since the drain port 22 is shielded by the lower surface of the holding portion 34a of the heater holding bracket 34 located on the drain port 22 of the heater 11, the radiant heat from the heater 11 can be blocked by the holding portion 34a. The heat radiation does not reach the drain port 22 directly, and the influence on the resin member such as the drain port 22 and the drain pipe connected thereto is suppressed. Further, the top surface of the holding portion 34a of the heater holding metal 34 shields the upper portion of the heater 11, so that the radiant heat from the heater 11 is reflected by the mirror-finished rotating drum 5 and is reflected by the heat shield plate 33 of the water tank 3. There is also an effect of suppressing thermal influence on the uncoated region.

上記遮熱板33によって遮熱できる温度以上にヒータ11の温度が上昇した場合には、その温度は伝熱板36から温度ヒューズ35に伝熱されるので、予め設定された温度ヒューズ35の作動温度にまでヒータ11が過熱すると、温度ヒューズ35は溶断してヒータ11への通電回路を遮断し、ヒータ11の異常過熱を停止させることができる。この温度ヒューズ35は洗濯水加熱槽10を含む水槽3が溶解したり発火するような状態に陥ることを未然に防ぐ最終手段であり、故障などによって最悪の状態に陥ることが防止される。また、ヒータ保持金具34の保持部34aはヒータ11に密接しているので、ヒータ11の熱は保持金具取付部34aから遮熱板33を介して温度ヒューズ35に伝熱されるので、伝熱板35だけでなくヒータ11の熱が温度ヒューズ35に伝熱し、温度ヒューズ35をより確実に茶道させることができる。   When the temperature of the heater 11 rises above the temperature that can be shielded by the heat shield plate 33, the temperature is transferred from the heat transfer plate 36 to the temperature fuse 35, so that the preset operating temperature of the temperature fuse 35 is set. When the heater 11 is overheated, the temperature fuse 35 is melted and the energization circuit to the heater 11 is cut off, and the abnormal overheating of the heater 11 can be stopped. The temperature fuse 35 is a final means for preventing the water tank 3 including the washing water heating tank 10 from being melted or ignited, and is prevented from falling into the worst state due to a failure or the like. Further, since the holding portion 34a of the heater holding metal 34 is in close contact with the heater 11, the heat of the heater 11 is transferred from the holding metal mounting portion 34a to the thermal fuse 35 via the heat shield plate 33. The heat of not only the heater 35 but also the heater 11 is transferred to the thermal fuse 35, and the thermal fuse 35 can be more reliably teased.

上記のように洗濯水を加熱する機能を設けた場合、加熱に伴って水槽3内には蒸気が発生する。水槽3は扉体8が閉じられることにより密閉状態となるため、蒸気発生によって水槽3内の内圧が上昇する。この水槽3内の気圧変化は好ましくなく、本構成のように水槽3内の気圧変化から給水水位を検知する機能の障害となる。水位検知は排水口22に連通するエアトラップ45内の空気が給水水量に応じて圧縮される状態をエアパイプ47によって水位センサ46に導き、水位センサ46が検出する空圧から給水水位を検知している。従って、水槽3内の気圧は大気圧に保つ必要があり、加熱に伴う蒸気発生により気圧が上昇したときには水槽3から圧力を排出することになる。本構成においては、水槽3の上方から洗剤投入部27に向けて排気パイプ48が接続されており、水槽3内で発生した蒸気は排気パイプ48から洗剤投入部27の洗剤収容室61を閉じる注水蓋体62に流れ、冷却により結露し、結露によって生じた水は給水パイプ7から水槽3に戻されるように構成されている。また、給水パイプ7にはトラップ7aが設けられているので、水槽3内の蒸気が給水パイプ7から洗剤投入部27に流れることが防止される。   When the function of heating the washing water is provided as described above, steam is generated in the water tank 3 with the heating. Since the water tank 3 is in a sealed state when the door body 8 is closed, the internal pressure in the water tank 3 increases due to the generation of steam. This change in atmospheric pressure in the water tank 3 is not preferable, and this hinders the function of detecting the feed water level from the change in atmospheric pressure in the water tank 3 as in this configuration. In the water level detection, a state in which the air in the air trap 45 communicating with the drain port 22 is compressed according to the amount of water supply is guided to the water level sensor 46 by the air pipe 47, and the water supply water level is detected from the air pressure detected by the water level sensor 46. Yes. Therefore, it is necessary to keep the atmospheric pressure in the water tank 3 at atmospheric pressure, and when the atmospheric pressure rises due to the generation of steam accompanying heating, the pressure is discharged from the water tank 3. In this configuration, an exhaust pipe 48 is connected from above the water tank 3 toward the detergent charging unit 27, and steam generated in the water tank 3 fills the detergent storage chamber 61 of the detergent charging unit 27 from the exhaust pipe 48. The water flows through the lid 62 and is condensed by cooling, and water generated by the condensation is returned from the water supply pipe 7 to the water tank 3. Further, since the water supply pipe 7 is provided with the trap 7 a, the steam in the water tank 3 is prevented from flowing from the water supply pipe 7 to the detergent charging unit 27.

上記構成になる水槽3は、図示しないサスペンション構造により洗濯機筐体2内に支持される。洗濯機筐体2は樹脂製の台枠25上に制振鋼板等により構築され、要所に補強部材、制振部材などを配すると共に台枠25を防振支持脚24で設置面上に支持し、脱水時の振動が外部に伝導することを抑制している。また、洗濯機筐体2には、水道栓に接続する給水受口26や洗剤投入部27、図示しない操作・表示パネルなどが外部露出するように設けられている。   The water tank 3 having the above configuration is supported in the washing machine casing 2 by a suspension structure (not shown). The washing machine housing 2 is constructed of a damping steel plate or the like on a resin base frame 25, and a reinforcing member, a damping member, and the like are arranged at important points, and the base frame 25 is placed on the installation surface by a vibration isolation support leg 24. Supports and suppresses the conduction of vibrations during dehydration to the outside. Further, the washing machine housing 2 is provided with a water supply port 26 connected to the water tap, a detergent charging unit 27, an operation / display panel (not shown), and the like exposed to the outside.

上記構成になるドラム式洗濯機1の運転動作について簡単に説明する。洗濯工程から脱水工程に至る一連の動作は、操作・表示パネルから指示入力を行うことにより図示しない制御構成により自動的に実行される。   The operation of the drum type washing machine 1 configured as described above will be briefly described. A series of operations from the washing process to the dehydration process is automatically executed by a control configuration (not shown) by inputting an instruction from the operation / display panel.

扉体8を開いて回転ドラム5内に洗濯物を投入し、洗濯物の量に対応する量の洗剤を洗剤投入部27に投入し、操作・表示パネルから運転開始を入力すると、排水弁28は閉じられ、まず第1給水弁29が開かれ、給水された水はシャワーノズル31から回転ドラム5内に散水されて洗濯物に水を含ませ、洗剤が溶け込んだ洗濯水が染み込みやすい状態にする。引き続いて第2給水弁30が開かれ、給水された水は洗剤投入部27の注水蓋体62から洗剤収容室61に注水され、洗剤を混合した洗剤混合水は給水口9から水槽3内に給水される。前記給水口9は水槽3の上方背面寄りの位置に開口しており、水槽3が傾斜しているので、流入した洗剤混合水は水槽3の背面に沿うように流れ落ち、最下部位である洗濯水加熱槽10にその背面寄りから流入する。洗濯水加熱槽10は前述したように、その底面が略水平方向に形成され、前方側に設けられた排水口22の開口位置に向かって若干の傾斜(2〜3度)が形成されているので、洗濯水加熱槽10に流入した洗剤混合水の中の洗剤は底面との摩擦抵抗により底面の後方側に残り、水だけが排水口22に流入し、排水弁28が閉じられていることから速やかに排水口22を満たす状態になり、洗剤は洗濯水加熱槽10の底に溜まった状態になる。水槽3内には洗濯物の量に対応する水位まで洗剤混合水が給水されるので、これをヒータ11によって所定温度に加熱すると、洗剤が水に溶け込みやすい状態になる。   When the door body 8 is opened, laundry is put into the rotary drum 5, an amount of detergent corresponding to the amount of laundry is put into the detergent loading unit 27, and an operation start is input from the operation / display panel. Is closed, first the first water supply valve 29 is opened, and the supplied water is sprinkled from the shower nozzle 31 into the rotary drum 5 so that the laundry contains water, so that the washing water in which the detergent has dissolved is easily infiltrated. To do. Subsequently, the second water supply valve 30 is opened, and the supplied water is poured into the detergent storage chamber 61 from the water filling lid 62 of the detergent charging unit 27, and the detergent mixed water mixed with the detergent enters the water tank 3 from the water supply port 9. Water is supplied. The water supply port 9 is opened at a position near the upper back surface of the water tank 3 and the water tank 3 is inclined, so that the detergent mixed water that has flowed in flows down along the back surface of the water tank 3 and is the lowermost part of the washing It flows into the water heating tank 10 from its back side. As described above, the bottom surface of the washing water heating tank 10 is formed in a substantially horizontal direction, and a slight inclination (2 to 3 degrees) is formed toward the opening position of the drain port 22 provided on the front side. Therefore, the detergent in the detergent mixed water flowing into the washing water heating tub 10 remains on the rear side of the bottom surface due to frictional resistance with the bottom surface, and only water flows into the drain port 22 and the drain valve 28 is closed. From this, the drain port 22 is quickly filled, and the detergent accumulates at the bottom of the washing water heating tank 10. Since the detergent mixed water is supplied to the water level corresponding to the amount of laundry in the aquarium 3, when the heater 11 is heated to a predetermined temperature by the heater 11, the detergent is easily dissolved in water.

次いで、ドラム駆動モータ4により回転ドラム5が回転駆動されると、水槽3内に生じる激しい水流により洗濯水加熱槽10内に渦流が発生して洗剤と水とが攪拌されるので、ヒータ11による加熱と相まって洗剤が水に充分に溶け込んだ洗濯水が得られる。洗濯水は透孔20を通して回転ドラム5内に入るので、水を含んだ洗濯物に効果的に浸透する。この洗濯物は回転ドラム5の回転により、その内周面に設けられた攪拌突起21により持ち上げられ、上方から洗濯水中に落下する叩き洗いの動作が繰り返されるので、洗濯物は攪拌されて効果的に洗濯動作がなされる。回転ドラム5の開口部及び水槽3の洗濯物出入口6は開口しているが、扉体8が閉じられたとき出入口枠体14に取り付けられたベローズ12が扉体8の内側に密着するので洗濯水が外部に飛散することはない。   Next, when the rotary drum 5 is rotationally driven by the drum drive motor 4, a vortex flow is generated in the washing water heating tank 10 due to the intense water flow generated in the water tank 3, and the detergent and water are agitated. Washing water in which the detergent is sufficiently dissolved in water is obtained in combination with heating. Since the washing water enters the rotary drum 5 through the through holes 20, it effectively penetrates into the laundry containing water. The laundry is lifted by the stirring protrusions 21 provided on the inner peripheral surface thereof by the rotation of the rotary drum 5 and the operation of tapping to drop into the washing water from above is repeated. The washing operation is performed. Although the opening of the rotating drum 5 and the laundry entrance / exit 6 of the water tub 3 are open, the bellows 12 attached to the entrance / exit frame 14 is in close contact with the inside of the door 8 when the door 8 is closed. Water will not splash outside.

洗濯工程が終了すると排水弁28が開かれて汚れた洗濯水は外部に排出されるので、引き続き回転ドラム5を高速回転させる脱水動作により洗濯物に含まれた洗濯水は透孔20から水槽3内に排出され、排水口22から外部に排出される。この脱水動作の後、第1及び第2の各給水弁29,30を開いて水槽3内に給水し、回転ドラム5を回転させるすすぎ工程と脱水動作を所定回数繰り返すことにより、洗濯物に残存している洗濯水がすすぎ出されるので、最後に脱水工程を実行することによって洗濯された洗濯物は脱水された状態になって工程は終了するので、扉体8を開いて洗濯物を取り出すことができる。   When the washing process is completed, the drain valve 28 is opened and the dirty washing water is discharged to the outside. Therefore, the washing water contained in the laundry by the dehydration operation of rotating the rotating drum 5 at a high speed continues from the through hole 20 to the water tank 3. It is discharged inside and discharged from the drain port 22 to the outside. After this dewatering operation, the first and second water supply valves 29 and 30 are opened to supply water into the water tub 3, and the rinsing process for rotating the rotating drum 5 and the dewatering operation are repeated a predetermined number of times to remain in the laundry. Since the washing water being rinsed is rinsed out, the laundry washed by performing the dehydration process lastly becomes dehydrated and the process ends, so the door 8 is opened and the laundry is taken out. Can do.

上記構成のように回転ドラム5を傾斜配置すると、回転ドラム5に洗濯物を出し入れする動作が容易になることや、回転ドラム5内に給水された水が背面側に溜まって少ない水量でも深い貯水状態が得られる利点がある反面、回転ドラム5内に収容した洗濯物が最も低い位置となる底面側の下部に集まり、回転ドラム5を回転させると更に洗濯物を底面側に集めてしまう弊害が生じやすくなるが、本実施形態に係るドラム式洗濯機1においては、ドラム駆動モータ4による回転ドラム5の回転駆動を制御することにより洗濯物の位置が入れ替わるように構成され、更には攪拌突起21の形状により回転ドラム5の回転に伴って洗濯物が前後に入れ替わるようにしている。これらの構成により洗濯物の位置を入れ替えて全ての洗濯物に満遍なく洗浄力が与えられるようにしている。   When the rotating drum 5 is inclined as in the above configuration, the operation of putting laundry into and out of the rotating drum 5 is facilitated, and the water supplied into the rotating drum 5 is accumulated on the back side, so that even a small amount of water can be stored deeply. On the other hand, there is an advantage that the state can be obtained, but the laundry stored in the rotary drum 5 gathers at the lower part on the bottom surface side which is the lowest position, and when the rotary drum 5 is rotated, the laundry is further gathered on the bottom surface side. The drum type washing machine 1 according to the present embodiment is configured to change the position of the laundry by controlling the rotation drive of the rotary drum 5 by the drum drive motor 4, and the stirring protrusion 21. With this shape, the laundry is changed back and forth as the rotary drum 5 rotates. With these configurations, the position of the laundry is changed so that all the laundry is uniformly given cleaning power.

以上説明した実施形態の構成は、回転ドラム5を傾斜配置した斜めドラム形式のドラム式洗濯機1に適用した例を示したが、回転ドラム5を水平方向に配置した一般的な構成においても同様に適用することができる。   The configuration of the embodiment described above is an example in which the rotary drum 5 is applied to the drum-type washing machine 1 in the form of an inclined drum, and the same applies to a general configuration in which the rotary drum 5 is horizontally arranged. Can be applied to.

以上の説明の通り本発明に係るドラム式洗濯機は、回転ドラム及び水槽を傾斜配置して回転ドラムに対して洗濯物を出し入れする作業を容易にした斜めドラム形式のドラム式洗濯機であっても水に混合して給水された洗剤混合水の中の洗剤は水槽の最下部位に設けられた貯水空間の底面に集められ、排水口や水槽の底角に溜まることがない。回転ドラムが回転駆動されると、貯水空間には渦流が発生して洗剤と水は強力に攪拌されるので、水に洗剤が充分に溶け込んだ洗濯水が得られる。従って、溶け残った洗剤が無駄に排出されることもなく、洗剤が充分に溶け込んだ洗濯水により洗濯性能を向上させたドラム式洗濯機を得ることができる。   As described above, the drum-type washing machine according to the present invention is a drum-type washing machine of an oblique drum type in which the rotating drum and the water tub are inclined to facilitate the work of putting the laundry in and out of the rotating drum. In addition, the detergent in the detergent mixed water supplied by mixing with water is collected on the bottom surface of the water storage space provided at the lowermost part of the aquarium and does not collect at the drain outlet or the bottom corner of the aquarium. When the rotating drum is driven to rotate, eddy currents are generated in the water storage space and the detergent and water are strongly stirred, so that washing water in which the detergent is sufficiently dissolved in water can be obtained. Accordingly, the detergent that has not been melted is not discharged unnecessarily, and a drum type washing machine having improved washing performance with washing water in which the detergent is sufficiently dissolved can be obtained.

1 ドラム式洗濯機
2 洗濯機筐体
3 水槽
5 回転ドラム
10 洗濯水加熱槽(貯水空間)
11 ヒータ
22 排水口
DESCRIPTION OF SYMBOLS 1 Drum type washing machine 2 Washing machine housing 3 Water tank 5 Rotating drum 10 Washing water heating tank (water storage space)
11 Heater 22 Drain outlet

Claims (2)

回転駆動される有底円筒形の回転ドラムを有底円筒形に形成された水槽内に収容し、前記水槽の最下部位から下方に向けて底面が略水平方向となるように貯水空間を形成し、前記底面の前方側最下部に排水口を開口させてなる水槽ユニットが、洗濯機筐体の正面側から背面側に向けて前記回転ドラムの回転軸心が下向き傾斜となり、前記排水口が前記水槽内部の最下点となるように洗濯機筐体内に配設され、前記水槽の上方かつ前記貯水空間よりも前記洗濯機筐体の背面寄りの位置に洗剤混合水を給水する給水口を前記水槽内に開口させてなることを特徴とするドラム式洗濯機。 A bottomed cylindrical rotating drum that is driven to rotate is housed in a water tank formed in a bottomed cylindrical shape, and a water storage space is formed so that the bottom surface is in a substantially horizontal direction downward from the lowest part of the water tank. and, water tank unit obtained by opening the front bottom to the water outlet of the bottom, the rotation axis of the rotary drum toward the rear side from the front side of the washing machine casing becomes downward inclination, the drain port disposed in the washing machine housing such that the lowest point of the interior of the water tank, the upper and the water supply port for supplying water to the detergent mixed water to the back side of the position of the washing machine housing than the water storage space of the water tank A drum-type washing machine characterized by being opened in the water tank . 貯水空間内に、その底面と略平行にヒータが配設されてなる請求項1に記載のドラム式洗濯機。   The drum type washing machine according to claim 1, wherein a heater is disposed in the water storage space substantially parallel to the bottom surface.
JP2005260099A 2005-09-08 2005-09-08 Drum washing machine Expired - Fee Related JP4634260B2 (en)

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JP2005260099A JP4634260B2 (en) 2005-09-08 2005-09-08 Drum washing machine
TW095127515A TW200714774A (en) 2005-09-08 2006-07-27 A tumbling washing machine
CN 200610151630 CN100510230C (en) 2005-09-08 2006-09-07 Drum washing machine
CN 200620133071 CN200988908Y (en) 2005-09-08 2006-09-07 Drum type washing machine

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