JP3900095B2 - dishwasher - Google Patents

dishwasher Download PDF

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Publication number
JP3900095B2
JP3900095B2 JP2003069963A JP2003069963A JP3900095B2 JP 3900095 B2 JP3900095 B2 JP 3900095B2 JP 2003069963 A JP2003069963 A JP 2003069963A JP 2003069963 A JP2003069963 A JP 2003069963A JP 3900095 B2 JP3900095 B2 JP 3900095B2
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JP
Japan
Prior art keywords
motor
cleaning
pump
cleaning tank
tank
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Expired - Lifetime
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JP2003069963A
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Japanese (ja)
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JP2004275364A (en
Inventor
智之 菊川
浩章 乾
眞 大山
隆 宮内
隆幸 井上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、食器の洗浄を行う食器洗い機に関するものである。
【0002】
【従来の技術】
従来、この種の食器洗浄機は、図4および図5に示すように、洗浄槽1の底部に設けた貯水部2の洗浄水を回転自在な洗浄ノズル3から洗浄槽1内に収容した食器に向けて噴射する洗浄ポンプ4を有している。この洗浄ポンプ4はモータ5の回転軸と同心として略鉛直方向に構成し、洗浄ノズル3の回転軌跡6から外れるように洗浄槽1の下方空間に配設している(例えば、特許文献1参照)。
【0003】
したがって、図5のように洗浄ポンプ4を回避して洗浄槽1を筐体7内に無駄な空間が生じないように最大限大きくしても、洗浄ノズル3の回転軌跡6から外れた部分8は有効な洗浄可能領域とはならず、洗浄槽1内の洗浄可能な空間が狭くなり、また、所定の洗浄可能な空間を確保すると洗浄槽1を収容する筐体7が大きくなり、狭いスペースへの設置が困難になるという問題があった。
【0004】
そこで、筐体7を大型化することなく洗浄可能な空間を確保するために、図6に示すように、洗浄ポンプ4をモータ5の回転軸と同心として略水平方向に構成し、洗浄ノズル3の回転軌跡と対向する洗浄槽1の底部下方に空間部9に小型化して配設することが考えられている(例えば、特許文献2参照)。
【0005】
【特許文献1】
特開平9−131292号公報
【特許文献2】
特開2001−198071号公報
【0006】
【発明が解決しようとする課題】
しかしながら、このような特許文献2に記載された構成によれば、洗浄ポンプ4およびモータ5の外形が細くなるため、モータ5の回転数を大幅に上げなければ所定のポンプ性能を得ることができず、モータ5駆動時の駆動音および振動が増大し、モータの寿命にも悪影響を及ぼすという新たな課題が生じ、筐体7を大型化することなく洗浄槽1内の洗浄空間を大きくすることは困難であった。
【0007】
本発明は上記の課題を解決するもので、筐体によって形成される本体の外郭形状を大型化することなく洗浄槽の容積を拡大して、収容可能な食器の量が多くできる食器洗浄機を提供することを目的としている。
【0008】
【課題を解決するための手段】
上記の目的を達成するために、本発明の食器洗浄機は、洗浄ポンプのインペラの回転軸とモータの回転軸を同心として略鉛直方向に構成するとともに、洗浄槽の底部から下方へ膨出した貯水部の側方で、かつ、洗浄ノズルの回転軌跡と対向する前記洗浄槽の底部下方に形成した空間部に前記モータおよび洗浄ポンプを配設し、前記モータの上面と洗浄槽の底部外面との間に前記モータの冷却用空気を流出させる間隙を形成し、ファンにより前記モータの下方から引き込んだ空気は、通気路を通って前記洗浄槽の底部外面との間に設けた間隙から前記モータの外周方向へ流出させるようにしたものである。
【0009】
これにより、本体形状を大型化することなく洗浄槽の容積を拡大して、収容可能な食器の量を多くすることができ、コンパクトな本体形状で多量の食器を洗浄することができるとともに、洗浄槽の底部下方の狭い空間にモータおよび洗浄ポンプを配設した場合でも、モータの内部と外面を同時に効率よく冷却して温度上昇を抑えることができる。
【0010】
【発明の実施の形態】
本発明の請求項1に記載の発明は、貯水部を有した洗浄槽と、前記貯水部の洗浄水を加圧する洗浄ポンプと、前記洗浄ポンプによって加圧された洗浄水を前記洗浄槽内に噴射する回転自在な洗浄ノズルと、前記洗浄ポンプを駆動しその回転軸方向へ延びる通気路を内部に形成したモータと、前記モータの上面側に設けたファンとを具備し、前記洗浄ポンプのインペラの回転軸と前記モータの回転軸を同心として略鉛直方向に構成するとともに、前記洗浄槽の底部から下方へ膨出した貯水部の側方で、かつ、前記洗浄ノズルの回転軌跡と対向する前記洗浄槽の底部下方に形成した空間部に前記モータおよび洗浄ポンプを配設し、前記モータの上面と洗浄槽の底部外面との間に前記モータの冷却用空気を流出させる間隙を形成し、前記ファンにより前記モータの下方から引き込んだ空気は、前記通気路を通って前記洗浄槽の底部外面との間に設けた間隙から前記モータの外周方向へ流出させるようにしたものであり、本体形状を大型化することなく洗浄槽の容積を拡大して、収容可能な食器の量を多くすることができ、コンパクトな本体形状で多量の食器を洗浄することができるとともに、洗浄槽の底部下方の狭い空間にモータおよび洗浄ポンプを配設した場合でも、モータの内部と外面を同時に効率よく冷却して温度上昇を抑えることができる。
【0011】
請求項2に記載の発明は、上記請求項1に記載の発明において、洗浄槽の底部に上方へ窪ませた凹部を設け、前記凹部内にファンを収容したものであり、洗浄槽の底部下方の空間にファンをコンパクトに収容して、モータの冷却を効率よく行うことができる。
【0012】
請求項に記載の発明は、上記請求項に記載の発明において、凹部は、その開口側の外周縁に内側上がりの傾斜部または曲面部を設けたものであり、モータの内部を通過して洗浄槽の底部外面に到達した空気をモータの外周方向へ円滑に流動させて冷却効果をよくすることができる。
【0013】
請求項に記載の発明は、上記請求項1〜に記載の発明において、モータの通気路から流出する空気を前記モータの回転軸側へ導くガイド部を設けたものであり、冷却流がモータの上面に接触する面積を大きくして冷却効果をよくすることができる。
【0014】
請求項に記載の発明は、上記請求項1〜に記載の発明において、モータをトロイダルモータで構成したものであり、貯水部の側方に形成される高さの低い空間部内にコンパクトに配設することができる。
【0015】
【実施例】
以下、本発明の実施例について、図面を参照しながら説明する。
【0016】
(実施例1)
図1〜図3において、1は食器かご6を設置して食器を洗う洗浄槽で、水道水を食器洗い機の本体7へ導く給水経路、水道水の止水あるいは給水を行う給水弁、給水された水を所定の水位に保つ水位センサ、および制御回路等からなる貯水量制御手段(図示せず)により給水された水を貯める貯水部2を底部に設けている。
【0017】
4は貯水された水を加圧する洗浄ポンプで、この洗浄ポンプ4内のインペラ10の回転軸11と、洗浄ポンプ4の駆動源であるモータ5の回転軸12を同心として略鉛直方向に構成するとともに、洗浄槽1の底部から下方へ膨出した貯水部2の側方で、かつ、食器を洗浄する洗浄手段として、食器かご6に置かれた食器に向けて洗浄水を噴射する洗浄ノズル3の回転軌跡と対向する洗浄槽1の底部下方に空間部Aを形成し、この空間部Aにモータ5および洗浄ポンプ4を配設する。モータ5は高さを低く形成するのに適したトロイダルモータで構成している。8は貯水部2内の水を加熱するヒータ、9はフィルタ、13は食器洗浄後の汚水を外部へ排水するための排水ポンプである。
【0018】
洗浄ポンプ4は、インペラ10の回転軸11と洗浄ポンプ4の駆動源であるモータ5の回転軸12を同心として略鉛直方向に構成するとともに、洗浄槽1の底部から下方へ膨出した貯水部2の側方で、かつ、食器を洗浄する洗浄手段として食器かご6に置かれた食器に向けて洗浄水を噴射する洗浄ノズル3の回転軌跡と対向する洗浄槽1の底部下方に空間部Aに配置されている。
【0019】
したがって、洗浄槽1内の洗浄可能な空間が確保でき、また、洗浄ポンプ4の外形寸法も確保可能となり、モータ5の高回転化の課題がなくなるため、食器洗い機の本体7の形状を大型化することなく洗浄槽1の容積を拡大して、収容可能な食器の量を多くすることができ、コンパクトな食器洗い機の本体7形状で多量の食器を洗浄することができる。また、洗浄槽1を所定の容積に設定した場合は、食器洗い機の本体7の小型化を促進することができるようになり、狭い場所への設置性を向上することができる。
【0020】
洗浄ポンプ4は、その底部が貯水部2の底部と略同一の高さ、または、貯水部2の底部より上方となるように設けたものであり、洗浄またはすすぎの終了後に水が洗浄ポンプ4内に留まることなく貯水部2へ流動させることができるようになり、排水時の残水を少なくして洗浄効率をよくすることができる。
【0021】
洗浄ポンプ4およびモータ5を洗浄槽1の外底部にねじ等で下方から直接取着してあり、従来、防振ゴムを介して取り付けていた際に課題となっていた、洗浄槽1と洗浄ポンプ4の相対位置関係のバラツキを少なくすることができ、洗浄水を循環させる導水路14等の循環経路の水密シール性を向上するとともに、洗浄ポンプ4とモータ5の主な振動源となる回転方向の振動(電磁音)は、洗浄槽1に設けた取り付け部16のねじれ方向で受けることが可能となり、モータ5駆動時の食器洗い機の本体7への振動伝達を少なくすることができる。もちろん、従来から行われている防振ゴム等の防振手段を設ければ、その振動伝達は一層少なくすることができる。
【0022】
洗浄ポンプ4とモータ5は、洗浄ポンプ4の上方にモータ5を配設し、前記モータ5を洗浄槽1の外底部に取り付けることにより、取り付け部16の長さを短くでき、取り付け部16のねじれ方向の剛性を高めて振動振幅を抑え、質量の重いモータ5の駆動を安定させるとともに、洗浄ポンプ4およびこの洗浄ポンプに結合した循環経路に加わる振動にともなう機械的ストレスを減少させることができ、導水路14等の連結部における水密シールの信頼性を高めることができる。
【0023】
モータ5の上面と洗浄槽1の底部外面との間には間隙17が形成してあり、モータ5の冷却用空気をこの間隙17に流動させることにより、モータ5の上面を効率よく冷却してその温度上昇を抑え、洗浄ポンプ4の大径化による回転数の抑制と合わせて低い温度での運転を実現することができる。
【0024】
モータ5の上面側には、同モータ5を冷却するファン19を設けるとともに、洗浄槽1の底部には上方へ窪ませた凹部18を設け、この凹部18内に少なくともファン19の一部を収容することにより、洗浄槽1の底部下方の空間にファン19をコンパクトに収容して、モータ5の冷却を効率よく行うことができる。
【0025】
モータ5の内部には、その回転軸12と同方向へ延びる領域を有した通気路20を形成してあり、モータ5の駆動により下方から引き込んだ空気は、図3の矢印で示すように、通気路20を通って洗浄槽1の底部外面との間に設けた間隙17からモータ5の外周方向へ流出して、モータ5の内部と下面および上面を同時に効率よく冷却することができる。
【0026】
洗浄槽1の底部に設けた凹部18は、その開口側の外周縁に内側上がりの傾斜部21が設けてあり、モータ5の内部を通過して洗浄槽1の底部外面に到達した空気をモータ5の外周方向へ円滑に流動させることができ、冷却効果をよくすることができる。なお、上記傾斜部21は、曲面部で形成してもよい。
【0027】
ファン19は、モータ5の通気路20から流出する空気を、モータ5の回転軸12側へ導くガイド22を設けてあり、ファン19の能力を高めるとともに、ファン19から出た直後の空気のファン19へのショートカットを抑制し、冷却流がモータ5の上面に接触する面積を大きくして冷却効果をよくすることができる。
【0028】
モータ5の外形を洗浄ポンプ4の外形より大きく形成するとともに、モータ5の電気的接続を行うターミナル部23を設け、このターミナル部23は、モータ5の下端から同モータ5の下方に配設した洗浄ポンプ4の側方へ突出するように構成してあり、モータ5の厚さを薄くして洗浄槽1の底部下方の空間を低くすることができ、本体7の小型化または洗浄槽1の大型化を促進することができるとともに、洗浄ポンプ4の側方に形成されるモータ5の下方空間を有効に利用して、モータ5の電気的接続を行うことができるとともに、洗浄槽1の底部に取り付けたモータ5の電気的接続を容易にすることができる。
【0029】
次に、上記実施例の動作について説明する。まず、貯水量制御手段により水道水が洗浄槽1の内部へ給水される。給水された水は、洗浄槽1の底部に設けられた貯水部2に貯まり、所定の水位になったところで貯水量制御手段によって給水を停止する。次に、洗浄ポンプ4が動作し、貯水部2の洗浄水は洗浄ポンプ4により加圧され、導水路14を通して洗浄ノズル3へ搬送され、そのノズル孔15から洗浄槽1内の食器かご6に置かれた食器に向けて噴射され洗浄を行う。
【0030】
洗浄を行った洗浄水は、再び貯水部2へ戻るように複数の循環経路を構成する。その際、洗浄水はヒータ8によって加熱され、予め設定されている適度な高温となって洗浄力が高められるとともに、洗浄を行った洗浄水の汚染物は再び貯水部2へ戻る際にフィルタ9により捕捉され、循環して洗浄を行う際の汚染物の再付着を抑える。洗浄が終わると排水ポンプ13によって洗浄槽1内の洗浄水が排水される。
【0031】
【発明の効果】
以上のように本発明によれば、本体形状を大型化することなく洗浄槽の容積を拡大して、洗浄可能な食器の量を多くすることができ、コンパクトな本体形状で多量の食器を洗浄することができるとともに、洗浄槽の底部下方の狭い空間にモータおよび洗浄ポンプを配設した場合でも、モータの内部と外面を同時に効率よく冷却して温度上昇を抑えることができる。
【図面の簡単な説明】
【図1】 本発明の実施例1の食器洗い機の断面図
【図2】 同食器洗い機の要部断面図
【図3】 同食器洗い機の洗浄ポンプおよびモータの拡大断面図
【図4】 従来の食器洗い機の断面図
【図5】 同食器洗い機の上面図
【図6】 従来の他の食器洗い機の断面図
【符号の説明】
1 洗浄槽
2 貯水部
3 洗浄ノズル
4 洗浄ポンプ
5 モータ
11 回転軸
12 回転軸
17 間隙
18 凹部
19 ファン
20 通気路
A 空間部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dishwasher for washing dishes.
[0002]
[Prior art]
Conventionally, as shown in FIGS. 4 and 5, this type of dishwasher is a tableware in which washing water in a water storage section 2 provided at the bottom of the washing tank 1 is accommodated in the washing tank 1 from a rotatable washing nozzle 3. It has the washing pump 4 which injects toward. The cleaning pump 4 is configured in a substantially vertical direction concentric with the rotation shaft of the motor 5 and is disposed in the lower space of the cleaning tank 1 so as to be separated from the rotation locus 6 of the cleaning nozzle 3 (see, for example, Patent Document 1). ).
[0003]
Therefore, even if the washing tank 1 is avoided and the washing tank 1 is enlarged as much as possible so as not to create a useless space in the housing 7 as shown in FIG. 5, the portion 8 deviated from the rotation locus 6 of the washing nozzle 3. Does not become an effective washable area, the washable space in the wash tank 1 becomes narrow, and if a predetermined washable space is secured, the housing 7 for housing the wash tank 1 becomes large, and the narrow space There was a problem that it would be difficult to install.
[0004]
Therefore, in order to secure a space that can be cleaned without increasing the size of the casing 7, as shown in FIG. 6, the cleaning pump 4 is configured in a substantially horizontal direction concentric with the rotating shaft of the motor 5, and the cleaning nozzle 3 It is considered that the space 9 is downsized and disposed below the bottom of the cleaning tank 1 facing the rotation trajectory (see, for example, Patent Document 2).
[0005]
[Patent Document 1]
JP-A-9-131292 [Patent Document 2]
Japanese Patent Laid-Open No. 2001-198071
[Problems to be solved by the invention]
However, according to such a configuration described in Patent Document 2, since the outer shapes of the cleaning pump 4 and the motor 5 become thin, a predetermined pump performance can be obtained unless the number of rotations of the motor 5 is significantly increased. Therefore, driving noise and vibration when the motor 5 is driven increase, and a new problem arises that adversely affects the life of the motor, and the cleaning space in the cleaning tank 1 is enlarged without increasing the size of the housing 7. Was difficult.
[0007]
SUMMARY OF THE INVENTION The present invention solves the above-described problem, and provides a dishwasher capable of enlarging the volume of a washing tank and increasing the amount of tableware that can be accommodated without increasing the outer shape of the main body formed by the casing. It is intended to provide.
[0008]
[Means for Solving the Problems]
To achieve the above object, a dishwasher of the present invention, Rise the rotation axis of the rotary shaft and the motors of the wash pump impeller with substantially constituting the vertical direction as concentric, from the bottom of the cleaning tank downward The motor and the cleaning pump are disposed in a space formed on the side of the stored water storage unit and below the bottom of the cleaning tank facing the rotation trajectory of the cleaning nozzle, and the upper surface of the motor and the bottom of the cleaning tank A gap for allowing the cooling air of the motor to flow out is formed between the outer surface and the air drawn from below the motor by a fan from a gap provided between the outer surface of the bottom of the washing tank through a ventilation path. The motor is allowed to flow in the outer peripheral direction .
[0009]
As a result, the volume of the washing tank can be increased without increasing the size of the main body, the amount of tableware that can be accommodated can be increased, and a large amount of tableware can be washed with a compact main body shape. Even when the motor and the washing pump are arranged in a narrow space below the bottom of the tank, the inside and outside of the motor can be efficiently cooled at the same time to suppress the temperature rise.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention includes a cleaning tank having a water storage section, a cleaning pump for pressurizing the cleaning water in the water storage section, and cleaning water pressurized by the cleaning pump in the cleaning tank. A rotary cleaning nozzle that injects, a motor that drives the cleaning pump and has an air passage that extends in the direction of the rotation axis, and a fan that is provided on the upper surface side of the motor; The rotating shaft of the motor and the rotating shaft of the motor are concentrically configured in a substantially vertical direction, on the side of the water storage section bulging downward from the bottom of the cleaning tank, and opposed to the rotation trajectory of the cleaning nozzle The motor and the cleaning pump are arranged in a space formed below the bottom of the cleaning tank, and a gap for allowing the cooling air of the motor to flow out is formed between the upper surface of the motor and the bottom outer surface of the cleaning tank , By the fans Air was drawn from below the motor, the are from the gap provided between the outer bottom surface of the cleaning tank through the vent passage that so as to flow out toward the outer periphery of the motor, increasing the size of the body shape The capacity of the washing tank can be increased without increasing the amount of tableware that can be accommodated, and a large amount of tableware can be washed with a compact body shape, and in the narrow space below the bottom of the washing tank Even when a motor and a cleaning pump are provided, the inside and outside surfaces of the motor can be efficiently cooled at the same time to suppress the temperature rise.
[0011]
Invention according to claim 2, in the invention described in the claim 1, a recess is recessed upward to the bottom of the wash Kiyoshiso provided, which accommodates the fan in the recess, the cleaning tank The fan can be accommodated compactly in the space below the bottom of the motor to cool the motor efficiently.
[0012]
Invention according to claim 3, in the invention described in the claim 2, concave portion, which has provided an inclined portion or the curved portion of the inner up to the outer peripheral edge of the open side, passes through the interior of the motor Thus, the air that has reached the outer surface of the bottom of the washing tank can be smoothly flowed in the outer peripheral direction of the motor to improve the cooling effect.
[0013]
The invention according to claim 4 is the invention according to any one of claims 1 to 3 , wherein a guide portion that guides the air flowing out from the air passage of the motor to the rotating shaft side of the motor is provided. The area in contact with the upper surface of the motor can be increased to improve the cooling effect.
[0014]
The invention according to claim 5 is the invention according to any one of claims 1 to 4 , wherein the motor is configured by a toroidal motor, and is compactly formed in a space portion having a low height formed on the side of the water storage portion. It can be arranged.
[0015]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0016]
Example 1
1 to 3, reference numeral 1 denotes a washing tank in which a dish basket 6 is installed to wash dishes, a water supply path for guiding tap water to the main body 7 of the dishwasher, a water supply valve for stopping or supplying tap water, A water storage section 2 for storing water supplied by a water storage amount control means (not shown) including a water level sensor for keeping the water at a predetermined water level and a control circuit is provided at the bottom.
[0017]
A cleaning pump 4 pressurizes the stored water, and the rotating shaft 11 of the impeller 10 in the cleaning pump 4 and the rotating shaft 12 of the motor 5 that is a drive source of the cleaning pump 4 are concentric and configured in a substantially vertical direction. At the same time, as a cleaning means for cleaning the tableware on the side of the water storage unit 2 bulging downward from the bottom of the cleaning tank 1, a cleaning nozzle 3 for injecting cleaning water toward the tableware placed in the tableware basket 6 A space A is formed below the bottom of the cleaning tank 1 facing the rotation trajectory, and the motor 5 and the cleaning pump 4 are disposed in the space A. The motor 5 is a toroidal motor suitable for forming a low height. 8 is a heater for heating the water in the water storage unit 2, 9 is a filter, and 13 is a drainage pump for draining sewage after washing the dishes to the outside.
[0018]
The cleaning pump 4 is configured in a substantially vertical direction with the rotating shaft 11 of the impeller 10 and the rotating shaft 12 of the motor 5 that is a driving source of the cleaning pump 4 being concentric, and a water storage section that bulges downward from the bottom of the cleaning tank 1. The space A below the bottom of the washing tub 1 facing the rotation trajectory of the washing nozzle 3 that irradiates washing water toward the tableware placed on the tableware basket 6 as a washing means for washing the tableware. Is arranged.
[0019]
Therefore, a washable space in the washing tank 1 can be secured, and the outer dimensions of the washing pump 4 can be secured, and the problem of increasing the rotation of the motor 5 is eliminated. Therefore, the shape of the main body 7 of the dishwasher is increased. The volume of the washing tank 1 can be increased without increasing the amount of tableware that can be accommodated, and a large amount of tableware can be washed in the shape of the main body 7 of the compact dishwasher. Moreover, when the washing tank 1 is set to a predetermined volume, it becomes possible to promote downsizing of the main body 7 of the dishwasher, and the installation property in a narrow place can be improved.
[0020]
The cleaning pump 4 is provided so that the bottom thereof is substantially the same height as the bottom of the water storage unit 2 or above the bottom of the water storage unit 2, and water is supplied to the cleaning pump 4 after completion of the cleaning or rinsing. It becomes possible to make it flow to the water storage part 2 without staying in the inside, and it is possible to improve the cleaning efficiency by reducing the residual water during drainage.
[0021]
The cleaning pump 4 and the motor 5 are directly attached to the outer bottom portion of the cleaning tank 1 with screws or the like from below, and the cleaning tank 1 and the cleaning which have been problems in the past when they were attached via vibration-proof rubber The variation in the relative positional relationship of the pump 4 can be reduced, the watertight sealability of the circulation path such as the water conduit 14 through which the cleaning water is circulated, and the rotation that is the main vibration source of the cleaning pump 4 and the motor 5. Directional vibration (electromagnetic sound) can be received in the twisting direction of the mounting portion 16 provided in the washing tub 1, and transmission of vibration to the main body 7 of the dishwasher when the motor 5 is driven can be reduced. Of course, if vibration isolating means such as a conventional anti-vibration rubber is provided, vibration transmission can be further reduced.
[0022]
The cleaning pump 4 and the motor 5 are arranged above the cleaning pump 4, and the motor 5 is attached to the outer bottom portion of the cleaning tank 1, whereby the length of the mounting portion 16 can be shortened. The rigidity in the torsional direction is increased to suppress the vibration amplitude, the drive of the heavy motor 5 is stabilized, and the mechanical stress due to the vibration applied to the cleaning pump 4 and the circulation path coupled to the cleaning pump can be reduced. And the reliability of the watertight seal | sticker in connection parts, such as the water conduit 14, can be improved.
[0023]
A gap 17 is formed between the upper surface of the motor 5 and the bottom outer surface of the cleaning tank 1, and the cooling air of the motor 5 flows into the gap 17 to efficiently cool the upper surface of the motor 5. The temperature increase can be suppressed, and the operation at a low temperature can be realized together with the suppression of the rotation speed by increasing the diameter of the cleaning pump 4.
[0024]
A fan 19 that cools the motor 5 is provided on the upper surface side of the motor 5, and a recess 18 that is recessed upward is provided at the bottom of the cleaning tank 1, and at least a part of the fan 19 is accommodated in the recess 18. By doing so, the fan 19 can be accommodated compactly in the space below the bottom of the cleaning tank 1, and the motor 5 can be cooled efficiently.
[0025]
An air passage 20 having a region extending in the same direction as the rotating shaft 12 is formed inside the motor 5, and the air drawn from below by driving the motor 5 is indicated by an arrow in FIG. The air flows out from the gap 17 provided between the cleaning tank 1 and the outer surface of the bottom of the washing tank 1 in the outer peripheral direction of the motor 5 so that the inside, the lower surface and the upper surface of the motor 5 can be efficiently cooled simultaneously.
[0026]
The recess 18 provided at the bottom of the cleaning tank 1 is provided with an inwardly inclined portion 21 at the outer peripheral edge on the opening side, and the air that has passed through the inside of the motor 5 and reached the bottom outer surface of the cleaning tank 1 is supplied to the motor. 5 can smoothly flow in the outer peripheral direction, and the cooling effect can be improved. The inclined portion 21 may be formed by a curved surface portion.
[0027]
The fan 19 is provided with a guide 22 that guides the air flowing out from the air passage 20 of the motor 5 to the rotating shaft 12 side of the motor 5. The shortcut to 19 can be suppressed, and the area where the cooling flow contacts the upper surface of the motor 5 can be increased to improve the cooling effect.
[0028]
The outer shape of the motor 5 is formed larger than the outer shape of the cleaning pump 4, and a terminal portion 23 for electrical connection of the motor 5 is provided. The terminal portion 23 is disposed below the motor 5 from the lower end of the motor 5. It is configured to protrude to the side of the cleaning pump 4, and the space below the bottom of the cleaning tank 1 can be reduced by reducing the thickness of the motor 5. While the enlargement can be promoted, the lower space of the motor 5 formed on the side of the cleaning pump 4 can be effectively used to electrically connect the motor 5 and the bottom of the cleaning tank 1. It is possible to facilitate electrical connection of the motor 5 attached to the motor.
[0029]
Next, the operation of the above embodiment will be described. First, tap water is supplied to the inside of the washing tank 1 by the water storage amount control means. The supplied water is stored in a water storage section 2 provided at the bottom of the cleaning tank 1, and when the water level reaches a predetermined level, the water supply is stopped by the water storage amount control means. Next, the cleaning pump 4 is operated, and the cleaning water in the water storage section 2 is pressurized by the cleaning pump 4 and conveyed to the cleaning nozzle 3 through the water conduit 14, and from the nozzle hole 15 to the tableware basket 6 in the cleaning tank 1. It is sprayed toward the tableware and washed.
[0030]
The wash water that has been washed constitutes a plurality of circulation paths so as to return to the water storage unit 2 again. At that time, the cleaning water is heated by the heater 8 and becomes a moderately high temperature set in advance, so that the cleaning power is enhanced, and the contaminants of the cleaning water that has been cleaned return to the water storage section 2 when the filter 9 is returned. This prevents trapping and reattachment of contaminants when circulated and cleaned. When the cleaning is completed, the cleaning water in the cleaning tank 1 is drained by the drain pump 13.
[0031]
【The invention's effect】
As described above, according to the present invention, the volume of the washing tank can be increased without increasing the size of the main body, and the amount of tableware that can be cleaned can be increased. In addition, even when the motor and the cleaning pump are arranged in a narrow space below the bottom of the cleaning tank, the temperature rise can be suppressed by efficiently cooling the inside and the outer surface of the motor simultaneously.
[Brief description of the drawings]
1 is a cross-sectional view of a dishwasher according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of an essential part of the dishwasher. FIG. 3 is an enlarged cross-sectional view of a washing pump and a motor of the dishwasher. Cross-sectional view of the dishwasher [Figure 5] Top view of the dishwasher [Figure 6] Cross-sectional view of another conventional dishwasher [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Washing tank 2 Water storage part 3 Washing nozzle 4 Washing pump 5 Motor 11 Rotating shaft 12 Rotating shaft 17 Gap 18 Recessed part 19 Fan 20 Ventilation path A Space part

Claims (5)

貯水部を有した洗浄槽と、前記貯水部の洗浄水を加圧する洗浄ポンプと、前記洗浄ポンプによって加圧された洗浄水を前記洗浄槽内に噴射する回転自在な洗浄ノズルと、前記洗浄ポンプを駆動しその回転軸方向へ延びる通気路を内部に形成したモータと、前記モータの上面側に設けたファンとを具備し、前記洗浄ポンプのインペラの回転軸と前記モータの回転軸を同心として略鉛直方向に構成するとともに、前記洗浄槽の底部から下方へ膨出した貯水部の側方で、かつ、前記洗浄ノズルの回転軌跡と対向する前記洗浄槽の底部下方に形成した空間部に前記モータおよび洗浄ポンプを配設し、前記モータの上面と洗浄槽の底部外面との間に前記モータの冷却用空気を流出させる間隙を形成し、前記ファンにより前記モータの下方から引き込んだ空気は、前記通気路を通って前記洗浄槽の底部外面との間に設けた間隙から前記モータの外周方向へ流出させるようにした食器洗い機。A cleaning tank having a water storage unit, a cleaning pump for pressurizing cleaning water in the water storage unit, a rotatable cleaning nozzle for injecting cleaning water pressurized by the cleaning pump into the cleaning tank, and the cleaning pump a motor forming a ventilation path inside extending rotational axis of the drive perilla, comprising a fan provided on the upper surface side of the motor, the rotation shaft of the the rotation axis of the impeller of the washing pump motor as concentric It is configured in a substantially vertical direction, in the space formed on the side of the water storage section bulging downward from the bottom of the cleaning tank and below the bottom of the cleaning tank facing the rotation trajectory of the cleaning nozzle. disposed the motor and wash pump, to form a gap to discharge the cooling air of the motor between the outer bottom surface of the cleaning tank and the upper surface of the motor, it was drawn from the lower side of the motor by the fan Care, dishwashing machine so as to flow out toward the outer periphery of said motor from said provided between the outer bottom surface of the cleaning tank through the vent passage gap. 浄槽の底部に上方へ窪ませた凹部を設け、前記凹部内にファンを収容した請求項1記載の食器洗い機。The recess is recessed upward to the bottom of the wash Kiyoshiso provided, dishwashing machine according to claim 1, wherein accommodating the fan in the recess. 部は、その開口側の外周縁に内側上がりの傾斜部または曲面部を設けた請求項2記載の食器洗い機。 Concave portion, Dishwasher according to claim 2, wherein providing the inclined portion or the curved portion of the inner up to the outer peripheral edge of the open side. モータの通気路から流出する空気を前記モータの回転軸側へ導くガイド部を設けた請求項1〜のいずれか1項に記載の食器洗い機。The dishwasher of any one of Claims 1-3 which provided the guide part which guides the air which flows out from the ventilation path of a motor to the rotating shaft side of the said motor. モータをトロイダルモータで構成した請求項1〜のいずれか1項に記載の食器洗い機。The dishwasher according to any one of claims 1 to 4 , wherein the motor is a toroidal motor.
JP2003069963A 2003-03-14 2003-03-14 dishwasher Expired - Lifetime JP3900095B2 (en)

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JP3900095B2 true JP3900095B2 (en) 2007-04-04

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