JP2004060536A - Pump and washing machine - Google Patents

Pump and washing machine Download PDF

Info

Publication number
JP2004060536A
JP2004060536A JP2002220284A JP2002220284A JP2004060536A JP 2004060536 A JP2004060536 A JP 2004060536A JP 2002220284 A JP2002220284 A JP 2002220284A JP 2002220284 A JP2002220284 A JP 2002220284A JP 2004060536 A JP2004060536 A JP 2004060536A
Authority
JP
Japan
Prior art keywords
port
pump
water
washing machine
washing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002220284A
Other languages
Japanese (ja)
Inventor
Koichi Kishimoto
岸本 浩一
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.)
Nidec Shibaura Corp
Original Assignee
Nidec Shibaura Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nidec Shibaura Corp filed Critical Nidec Shibaura Corp
Priority to JP2002220284A priority Critical patent/JP2004060536A/en
Publication of JP2004060536A publication Critical patent/JP2004060536A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D5/00Pumps with circumferential or transverse flow
    • F04D5/002Regenerative pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44Fluid-guiding means, e.g. diffusers
    • F04D29/46Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/50Fluid-guiding means, e.g. diffusers adjustable for reversing fluid flow
    • F04D29/506Fluid-guiding means, e.g. diffusers adjustable for reversing fluid flow especially adapted for liquid pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Frames (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small-sized, low-cost pump capable of performing a specified water sucking and discharging operation according to an operating direction and also provide, at a low cost, a washing machine supplying external water into a laundry sink by using one pump and circulating the water in the laundry sink. <P>SOLUTION: In this pump 1, an impeller 21 having a westoco vane 22 is disposed in a pump part 20. The pump part comprises three ports for sucking or charging water, a flow passage 40 is formed in the outer peripheral part of the westoco vane 22. A first port 24 and a third port 26 are provided at both end parts of the flow passage 40. A second port 25 is provided midway in a flow passage for the first port 24 and the third port 26. The second port 25 is formed openable. The pump also comprises a swing valve which when the second port 25 is in the open state, cuts off the flow passage for the first port 24 and the second port 25, and when the second port 25 is in the closed state, opens the flow passage for the first port 24 and the second port 25. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、ポンプ及び洗濯機に関し、水道とは別の外部の水源からの水を洗濯槽に供給し、また洗濯槽内の水を洗濯機内で循環させるポンプ、及びそのポンプを備えた洗濯機に関する。
【0002】
【従来の技術】
近年の自動洗濯機には、水道とは別の外部の水(例えば風呂水)を利用して洗濯機の洗濯槽に給水して洗濯やすすぎを行い、また洗濯槽内の水を洗濯機内で循環させながら洗濯やすすぎを行う自動洗濯機が普及している。
【0003】
この自動洗濯機では、浴槽の風呂水を吸水して洗濯槽に供給するための風呂水用給水ポンプと、洗濯槽内の水を洗濯機内で循環させながら洗濯やすすぎを行うための洗濯水循環用ポンプを別途使用するもので、2台のポンプを洗濯機本体内に内蔵する必要があった。
【0004】
このため、2台のポンプを設置するスペースを洗濯機内に要して洗濯機が大型化し、また重量も重くなり、さらにポンプ自体の費用のみならずポンプ組み込みのため付属部品や組立の作業工数を必要として洗濯機が高価格なものとなっている。
【0005】
【発明が解決しようとする課題】
そこで、上記の自動洗濯機の小形化、軽量化及び低価格化を実現するために、洗濯槽に風呂水などの外部の水を供給する機能と洗濯槽内の水を洗濯機内で循環させる2つの機能を1台のポンプで果たすことのできる、いわゆる「リバーシブルポンプ」が実用化されている。しかしながら、従来のリバーシブルポンプは1台のポンプに正転用羽根車と逆転用羽根車の2種類の羽根車を有し、それぞれが別々のポンプ室内に収納され、またそれぞれのポンプ室には吸水口と吐出口を備え、ポンプの正転、逆転運転に応じて2つのポンプ室を使い分けて送水方向を切替えるもので、ポンプ構造が複雑となって大きなポンプとなり、ポンプとそれを用いた洗濯機の小形化や低価格化の要求を十分に満足するものではなかった。
【0006】
本発明は、上記の要求を満たすものであり、ポンプの正転、逆転の運転方向に応じて所定の吸水口と吐出口を選択し吸水、吐出運転を行うことのできるコンパクトな構造を有する小形、低価格化を実現するポンプを提供するものであり、また、1台のポンプで風呂水などの外部の水を洗濯槽に供給し、洗濯槽内の水を循環させることができるポンプを備えたコンパクト化、小形化が可能である洗濯機を低価格で提供することを目的とするものである。
【0007】
【課題を解決するための手段】
請求項1の発明は、ポンプ部にウエスコ型羽根を有する羽根車を配したポンプであり、前記ポンプ部は、水を吸水又は吐出する3つの口を有し、前記ウエスコ型羽根の外周部に流路を有し、前記流路の両端部に第1の口と第3の口を設け、前記第1の口と第3の口の流路途中に第2の口が設けられ、前記第2の口を自在に開閉し、かつ前記第2の口が開状態にある時は前記第1の口と前記第2の口との流路を遮断し、また閉状態にある時は前記第1の口と前記第2の口との流路を開放するスイング弁を備え、前記羽根車の正転時には、前記スイング弁が前記第2の口を閉じて前記第1の口から吸引した水を前記第3の口から吐出し、前記羽根車の逆転時には、前記スイング弁が前記第2の口を開状態にして、前記第3の口から吸引した水を前記第2の口から吐出することを特徴とするポンプである。
【0008】
本発明のポンプによれば、ポンプ部に配されたウエスコ型羽根を有する羽根車は、ポンプの正転、逆転運転に応じて正逆の2方向に吸引作用を発生し、ポンプ部に設けられた3カ所の開口部から2カ所を選択し、吸水、吐出することができる。すなわち、正転時には第1の口から吸引した水流によりスイング弁が第2の口を閉じ、第1の口から第3の口へ続く流路を開放し第3の口から水を吐出し、また、逆転時には第3の口から吸引した水流によりスイング弁が第2の口を開状態にし、かつ第2の口から後方にある第1の口への流路を遮断して、第3の口から第2の口へ導く流路を形成し第2の口から水を吐出することができる。また、1枚の羽根車と1つのポンプ室とでポンプが構成されるので、ポンプ構造がコンパクトなものとなり、ポンプの小形化、低価格化が実現する。
【0009】
請求項2の発明は、前記ポンプが、モータ部とポンプ部とが一体に構成されたポンプであり、前記モータ部では、固定子の内周に磁性体を有する回転子が回転自在に配され、前記回転子がウエスコ型羽根を有する羽根車を備えたことを特徴とする請求項1に記載のポンプである。
【0010】
この発明のポンプによれば、モータ部とポンプ部とが一体構造に形成され、回転子が羽根車を備えたコンパクトな構造となってより小形化され、またモータ部の回転ロスの発生を抑えてポンプ特性を向上し、騒音発生を低減することができる。
【0011】
請求項3の発明は、前記モータ部が、モールド樹脂によりモールドされている
ことを特徴とする請求項2に記載のポンプである。
【0012】
この発明のポンプでは、モータ部の耐水性、絶縁性が向上し、電気部品の故障や漏電が防止されるのでポンプの耐久性、安全性を改善することができる。
【0013】
請求項4の発明は、外部の水を吸水して洗濯機の洗濯槽に供給し、また洗濯槽内の水を循環させるポンプを有する洗濯機において、前記ポンプが請求項1〜3のいずれか1項に記載のポンプであって、前記ポンプの正転時には、前記第1の口から吸引した外部の水を前記第3の口から前記洗濯槽へ供給し、前記ポンプの逆転時には、前記第3の口から吸引した洗濯槽内の水を前記第2の口から前記洗濯槽内に循環させることを特徴とする洗濯機である。
【0014】
この発明の洗濯機では、1台のポンプが外部の水を洗濯機の洗濯槽に供給する給水ポンプと洗濯槽内の水を循環させる循環ポンプの2つの機能を果たすので、洗濯機に内蔵するポンプが1台となって洗濯機の小形化、軽量化、低価格化を可能とする。
【0015】
【発明の実施の形態】
本発明の実施形態について、以下に図面に基づいて説明する。
【0016】
(第1の実施形態)
図1は第1の実施形態のポンプ1の逆転運転時の縦断面図であり、図2はその正転運転時の部分縦断面図であり、図3、図4は逆転及び正転時のスイング弁30部分の横断面図であり、図5、図6は逆転及び正転時のポンプ部20の正面断面図である。
【0017】
ポンプ1は、モータ部10とポンプ部20とが一体に構成されている。
【0018】
モータ部10は、第1ケーシング8の外周に沿ってリング状に設けられた固定子13を有し、固定子13の内周部の第1ケーシング8内には磁性体12を有する回転子11が回転自在に配された、ブラシレス直流モータを構成するものであり、ポンプ1の低騒音化や制御性向上に寄与するものである。
【0019】
固定子13は、鉄心とそれに巻回されたコイルとからなり、モータ駆動用の回路基板14が固定子13の側部に配され、固定子13及び回路基板14は全体がモールド樹脂17により樹脂内にモールドされ、モータ部10の耐水性、絶縁性を向上している。
【0020】
回転子11は、ウエスコ型羽根22を有する羽根車21を磁性体12と同軸に連結するもので、羽根車21をポンプ室23内に配し、ポンプ1の中心に設けられた固定軸15に左右端部の軸受16a、16bを介して回転自在に支持されている。
【0021】
ポンプ部20は、それぞれが吸水口或いは吐出口となる3つの口を有し、またポンプ室23の外周壁となる第2ケーシング9の内周壁と羽根車21に設けられたウエスコ型羽根22の外周部との間に流路40を形成している。
【0022】
上記3つの口は、流路40の両端部に第1の口である吸水口24と、第3の口である吸水吐出口26を設け、吸水口24と吸水吐出口26の間の流路40の途中に第2の口である吐出口25が設けられ、それぞれポンプ室23から外部に向かう接続管を設けて開口している。
【0023】
この流路40は、吸水口24と吸水吐出口26の間が第2ケーシング9に設けられた壁部28により閉塞され、ポンプ室23内の流水方向を規制し、逆流を防止するようになっている。
【0024】
また、ポンプ部20には、吐出口25を自在に開閉し、かつ吐出口25が開状態にある時は吸水吐出口26から吸水口24への流路40を遮断し、また吐出口25が閉状態にある時は吸水口24と吸水吐出口26との流路を開放するスイング弁30が設けられている。
【0025】
そして、ポンプ1は、第1ケーシング8と第2ケーシング9とが、回転子11の磁性体12部分と羽根車21部分とを仕切る仕切り板19とパッキン18とを挟んで締結され、モータ部10とポンプ部20とが一体化されている。
【0026】
このポンプ1は、モータ部10の通電により回転子11が回転し、ウエスコ型羽根車21がポンプ室23内で回転して吸引作用を発生し、吸水口から吸引された水はポンプ室23内に流入して回転するウエスコ型羽根22が通過した後に渦を生してポンプ室23内を旋回する渦流を形成して吐出口から流水をポンプ1外部に吐出するもので、回転子11の正転、逆転運転の変換によって渦流の発生方向を切替えて吸水口と吐出口を自動的に選択し送水するものである。
【0027】
上記スイング弁30は、ポンプ室23内を流れる流水方向により吐出口25の開口部27を開閉するように動作するものである。
【0028】
ポンプ1の逆転運転時には、スイング弁30が吐出口25の開口部27を開状態(図1、3)とし、同時に吐出口25の後方へのポンプ室23内の流路40を遮断して流水の流れを中断させ、流水が吐出口25のみに流入し吐出される。
【0029】
また、ポンプ1の正転時には、スイング弁30が吐出口25の開口部27を閉状態(図2、4)にし、吐出口25の後方への流路40を開放し、流水は塞がれた吐出口25を通過して吐出口25後方の吸水吐出口26に流入し吐出するものである。
【0030】
このスイング弁30は、例えば、図3、図4に示すように、吐出口25の開口部27を開閉する弁蓋部31とポンプ室23の流路40を遮断する遮蔽板32からなるゴム、ウレタン等の弾性体からなり、片開き状に動作するようにポンプ室の内壁に設けた弁止め33にピン止めされピンを支点として水流の方向とその水圧により弧状に動作するもの、或いは弁の自重と水流を利用して吐出口の開閉を行うもの等が利用でき、ポンプの正転、逆転運転による水流方向に従い確実に吐出口25を開閉し、またポンプ室23の流路40を遮断又は開放する構造のものであればよい。
【0031】
ポンプ1の運転中のスイング弁30の動作と、ポンプ室23内の流水の流れについて以下に説明する。
【0032】
ポンプ1の逆転時には、図3及び図5に示すように、吸入吐出口26から吸引された流水41がポンプ室23を吐出口25に向かって流れ、その水圧により吐出口25の後方に設けられているスイング弁30を弁止め33を支点にして押し上げるように動作させ、吐出口25の開口部27を開状態にすると共に遮蔽板32が仕切り板19に圧接されてその間の流路を閉塞し、吐出口25からポンプ室23後方への流路を遮断し、ポンプ室23の流水42は吐出口25のみに流入しポンプ1外に吐出されるようになる。なお、流路40に設けられた第2ケーシング9の壁部28により流水方向が規制され、ポンプ室23内での逆流が防止される。
【0033】
また、ポンプ1の正転時には、図4及び図6に示すように、吸水口24から吸引された流水43がポンプ室23を吐出口25の方向に流れ、その水圧によりスイング弁30を押し倒して弁蓋部31が開口部27を覆い吐出口25を閉状態にすると共に遮蔽板32と仕切り板19の間には流路が開かれ吐出口25の後方への流路40を開放し、ポンプ室23を流れる流水44は塞がれた吐出口25を通過してポンプ室23後方の吸水吐出口26に流入しポンプ1外に吐出されるものである。
【0034】
従って、上記構成のポンプ1では、1つのポンプ室23に3カ所の開口部が設けられているものの、ポンプ1の逆転時には吸入吐出口26からの流水は吐出口25のみから吐出され、また、正転時には吸入口24からの流水が吸水吐出口26のみから吐出されるようになり、ポンプの正転逆転に応じて吸水口と吐出口を自動的に選択し確実に所定の方向に送水し、1台で2台分のポンプ機能を満たすことができるようになる。
【0035】
また、ポンプ1では、1種類の羽根車を用いて1つのポンプ室内に正転流と逆転流を形成することができるので、従来の2種類の羽根車を用いたポンプに比べて、ポンプ構造を簡単なものとしポンプの小形化や価格の低減が可能とする。
【0036】
さらに、ポンプ構造のコンパクト化により、ポンプ特性の向上、低騒音化等の性能向上も図られ、吸水、吐出揚程や吐出量の確保が容易となり、従来品よりも部品点数を削減して高信頼性を得ることもできる。
【0037】
(第2の実施形態)
図7は、第2の実施形態である全自動洗濯機2の概略図である。洗濯機2は、洗濯機本体内に洗濯物を収容しモータ(M)で回転する洗濯槽51を有し、その他に水道水の給水経路56や排水経路61等を有し、ユーザーが選択した洗濯コースの工程がマイクロコンピュータにより制御され、給水から洗濯、排水までの全工程を自動的に行う一般的な構造の全自動洗濯機であり、その細部の構造についての説明は省略する。
【0038】
洗濯機2は、浴槽53等の外部に貯留されている水54を洗濯槽51に供給して洗濯し、また洗濯中に洗濯槽51の洗濯水やすすぎ水52を洗濯機2内で循環させるながら洗濯する機能を持つもので、その給水および循環用ポンプとして、上記ポンプ1を洗濯機2本体内に内蔵している。
【0039】
図に示すように、ポンプ1には、洗濯機外部の浴槽53内に投入された風呂水吸水孔62に接続される風呂水吸水管57と、ポンプ1が吸引した洗濯槽51の洗濯水52を再び洗濯槽51に戻す循環水給水管58と、ポンプ1から吐出される風呂水54を洗濯槽51へ送る(矢符A)給水管と洗濯機2内を循環させるために洗濯槽51から吸水された洗濯水52をポンプ1に送る(矢符B)循環水吸水管を共用する送水管59が接続されている。
【0040】
ここで、ポンプ1の吸水口24は風呂水吸水管57と接続され、吐出口25は循環水給水管58と接続され、吸水吐出口26は送水管59と接続されている。
なお、送水管59は切替弁を設けて、風呂水54の洗濯槽51への給水管と洗濯槽51から吸水した水をポンプ1に送る循環水吸水管との2経路に分割して設けたものでもよい。
【0041】
この洗濯機2では、浴槽53の風呂水54を洗濯やすすぎに使用する場合、ポンプ1が正転運転されてポンプ1の吸水口24からの吸引作用が働き、吸水口24に接続された浴槽53内の風呂水吸水孔62から風呂水54が吸水され、風呂水用吸水管57を通りポンプ1内に流入した後、吸水吐出口26から吐出され送水管59を経て洗濯槽51に給水され、規定水位になると自動的にポンプ1が停止する。
【0042】
また、洗濯やすすぎ中に洗濯槽51の洗濯水やすすぎ水を循環させながら洗濯、すすぎを行う場合は、ポンプ1が逆転運転され、ポンプ1の吸入吐出口26からの吸引作用により吸水された洗濯槽51の水が送水管59を通りポンプ1内に流入し、吐出口25から吐出され循環水給水管58を経て再び洗濯槽51に戻されて洗濯槽を循環し、洗濯、すすぎ工程が終了するとポンプ1も自動停止する。
【0043】
これにより、洗濯機2では、本体に内蔵した1台の小形ポンプ1により、風呂水などの外部の水の洗濯槽51への給水と、洗濯中に洗濯水やすすぎ水を循環させながら洗濯を行うことができるようになる。
【0044】
従って、洗濯機2では、洗濯機への給水用と循環用とにそれぞれ専用のポンプが不要となり、また、ポンプ1は従来のリバーシブルポンプよりも小形化されたものであるので、洗濯機内のポンプ及びその付属部品の設置スペースを最小限とし、またポンプ設置場所の選択に自由度が増したり遊休スペースを活用することもでき、洗濯機の低価格化とコンパクト化、小形化を可能とするものである。
【0045】
また、内蔵するポンプのポンプ特性の向上や低騒音化等の性能向上、或いは信頼性の向上により、洗濯機の操作性や耐久性を向上することもできる。
【0046】
【発明の効果】
以上説明したように、本発明のポンプでは、正転、逆転運転の切替えに応じてポンプの3カ所の開口部から吸水口と吐出口とを選択し所定の水源から所定方向へ送水することができコンパクトな構造を有する小形ポンプを安価に提供することができる。
【0047】
また、本発明の洗濯機では、1台のポンプによって風呂水などの外部の水を洗濯槽に供給し、洗濯槽内の水を循環させることができるので、洗濯機のコンパクト化、小形化が図られ、またポンプやその付属部品の部品点数が削減され低価格化を可能とする信頼性の高い洗濯機が得られる。
【図面の簡単な説明】
【図1】第1の実施形態のポンプの逆転時縦断面図である。
【図2】第1の実施形態のポンプの正転時部分縦断面図である。
【図3】第1の実施形態のポンプの逆転時部分横断面図である。
【図4】第1の実施形態のポンプの正転時部分横断面図である。
【図5】第1の実施形態のポンプ室の逆転時正面断面図である。
【図6】第1の実施形態のポンプ室の正転時正面断面図である。
【図7】第2の実施形態の洗濯機の概略図である。
【符号の説明】
1……ポンプ
10……モータ部
11……回転子
12……磁性体
13……固定子
15……固定軸
20……ポンプ部
21……羽根車
22……ウエスコ型羽根
23……ポンプ室
24……吸水口(第1の口)
25……吐出口(第2の口)
26……吸水吐出口(第3の口)
30……スイング弁
31……弁蓋部
32……遮蔽板
40……流路
[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump and a washing machine, and more particularly to a pump for supplying water from an external water source other than a water supply to a washing tub and for circulating water in the washing tub in the washing machine, and a washing machine equipped with the pump. About.
[0002]
[Prior art]
In recent years, automatic washing machines have been used to supply water to the washing tub of the washing machine using external water (for example, bath water) which is different from the tap water to rinse and wash the washing tub. Automatic washing machines that perform washing and rinsing while circulating have become widespread.
[0003]
This automatic washing machine has a bath water feed pump for absorbing the bath water in the bathtub and supplying it to the washing tub, and a washing water circulation pump for circulating the water in the washing tub in the washing machine for washing and rinsing. The pump was separately used, and two pumps had to be built in the main body of the washing machine.
[0004]
For this reason, the space for installing two pumps is required in the washing machine, so that the size of the washing machine is increased, and the weight becomes heavy. Needlessly, washing machines are expensive.
[0005]
[Problems to be solved by the invention]
In order to reduce the size, weight, and cost of the automatic washing machine, a function of supplying external water such as bath water to the washing tub and circulating the water in the washing tub in the washing machine 2 A so-called “reversible pump” that can perform one function with one pump has been put to practical use. However, the conventional reversible pump has two types of impellers, one for forward rotation and the other for reverse rotation, in a single pump, each of which is housed in a separate pump chamber, and each pump chamber has a water inlet. The pump has a complicated structure and becomes a large pump, and the pump and the washing machine using it are used. It did not fully satisfy the demand for miniaturization and price reduction.
[0006]
The present invention satisfies the above-mentioned requirements, and has a compact structure having a compact structure capable of selecting a predetermined water inlet and a discharge port in accordance with the forward and reverse operation directions of a pump to perform water absorption and discharge operations. The present invention provides a pump that realizes low cost, and is provided with a pump that can supply external water such as bath water to a washing tub with one pump and circulate water in the washing tub. It is an object of the present invention to provide a compact and compact washing machine at a low price.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 is a pump in which an impeller having a Wesco-type blade is provided in a pump portion, wherein the pump portion has three ports for absorbing or discharging water, and is provided on an outer peripheral portion of the Wesco-type blade. A first port and a third port are provided at both ends of the channel, and a second port is provided in the middle of the channel between the first port and the third port; The second port is freely opened and closed, and when the second port is in the open state, the flow path between the first port and the second port is shut off, and when the second port is in the closed state, the second port is closed. A swing valve that opens a flow path between the first port and the second port, and when the impeller rotates forward, the swing valve closes the second port and water sucked from the first port. Is discharged from the third port, and at the time of reverse rotation of the impeller, the swing valve opens the second port so that water sucked from the third port is moved forward. A pump, characterized in that the discharge from the second port.
[0008]
According to the pump of the present invention, the impeller having the Wesco-type blades arranged in the pump section generates suction action in two directions, forward and reverse, according to the normal rotation and reverse rotation operation of the pump, and is provided in the pump section. Water can be absorbed and discharged by selecting two of the three openings. That is, at the time of normal rotation, the swing valve closes the second port by the water flow sucked from the first port, opens a flow path from the first port to the third port, and discharges water from the third port, Further, at the time of reverse rotation, the swing valve opens the second port by the water flow sucked from the third port, and shuts off the flow path from the second port to the first port located rearward. A flow path leading from the mouth to the second mouth is formed, and water can be discharged from the second mouth. In addition, since the pump is composed of one impeller and one pump chamber, the pump structure is compact, and the pump can be reduced in size and cost.
[0009]
According to a second aspect of the present invention, the pump is a pump in which a motor unit and a pump unit are integrally formed. In the motor unit, a rotor having a magnetic body is rotatably disposed on an inner periphery of a stator. The pump according to claim 1, wherein the rotor includes an impeller having Wesco-type blades.
[0010]
ADVANTAGE OF THE INVENTION According to the pump of this invention, a motor part and a pump part are formed in an integral structure, a rotor becomes a compact structure provided with the impeller, and it is more miniaturized, and also suppresses generation | occurrence | production of rotation loss of a motor part. As a result, pump characteristics can be improved and noise generation can be reduced.
[0011]
The invention according to claim 3 is the pump according to claim 2, wherein the motor portion is molded with a molding resin.
[0012]
ADVANTAGE OF THE INVENTION In the pump of this invention, the water resistance and insulation of a motor part improve, and failure and electric leakage of an electric component are prevented, and the durability and safety of a pump can be improved.
[0013]
According to a fourth aspect of the present invention, there is provided a washing machine having a pump for absorbing external water to supply the water to the washing tub of the washing machine, and for circulating the water in the washing tub. 2. The pump according to claim 1, wherein at the time of forward rotation of the pump, external water sucked from the first port is supplied to the washing tub from the third port, and at the time of reverse rotation of the pump, the second water is supplied. A washing machine characterized in that water in a washing tub sucked from a third mouth is circulated from the second mouth into the washing tub.
[0014]
In the washing machine of the present invention, one pump performs two functions of a water supply pump for supplying external water to the washing tub of the washing machine and a circulation pump for circulating the water in the washing tub, so that it is built in the washing machine. A single pump makes it possible to reduce the size, weight and cost of the washing machine.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings.
[0016]
(1st Embodiment)
FIG. 1 is a vertical cross-sectional view of the pump 1 of the first embodiment at the time of reverse rotation operation, FIG. 2 is a partial vertical cross-sectional view of the pump 1 at the time of normal rotation operation, and FIGS. FIG. 5 and FIG. 6 are front cross-sectional views of the pump unit 20 at the time of reverse rotation and normal rotation.
[0017]
In the pump 1, the motor unit 10 and the pump unit 20 are integrally formed.
[0018]
The motor unit 10 has a stator 13 provided in a ring shape along the outer periphery of the first casing 8, and a rotor 11 having a magnetic body 12 in the first casing 8 on the inner periphery of the stator 13. Constitutes a brushless DC motor rotatably arranged, and contributes to lowering the noise of the pump 1 and improving controllability.
[0019]
The stator 13 includes an iron core and a coil wound therearound. A circuit board 14 for driving a motor is disposed on a side portion of the stator 13. The water resistance and insulation of the motor unit 10 are improved.
[0020]
The rotor 11 connects an impeller 21 having a Wesco-type impeller 22 coaxially with the magnetic body 12. The impeller 21 is arranged in a pump chamber 23, and is attached to a fixed shaft 15 provided at the center of the pump 1. It is rotatably supported via bearings 16a, 16b at the left and right ends.
[0021]
The pump unit 20 has three ports each serving as a water intake port or a discharge port. The inner wall of the second casing 9, which is the outer wall of the pump chamber 23, and the wesco-type blade 22 provided on the impeller 21. The flow path 40 is formed between the outer peripheral portion and the outer peripheral portion.
[0022]
The three ports are provided with a water inlet 24 as a first port and a water outlet 26 as a third port at both ends of the flow path 40, and a flow path between the water inlet 24 and the water outlet 26. A discharge port 25, which is a second port, is provided in the middle of 40, and a connection pipe extending from the pump chamber 23 to the outside is provided and opened.
[0023]
In the flow path 40, the space between the water inlet 24 and the water outlet 26 is closed by a wall 28 provided in the second casing 9, and regulates the direction of flowing water in the pump chamber 23 to prevent backflow. ing.
[0024]
In the pump section 20, the discharge port 25 is freely opened and closed, and when the discharge port 25 is in the open state, the flow path 40 from the water suction discharge port 26 to the water suction port 24 is shut off. A swing valve 30 that opens the flow path between the water inlet 24 and the water outlet 26 when in the closed state is provided.
[0025]
In the pump 1, the first casing 8 and the second casing 9 are fastened with a partition plate 19 and a packing 18 separating the magnetic body 12 and the impeller 21 of the rotor 11 interposed therebetween. And the pump unit 20 are integrated.
[0026]
In the pump 1, the rotor 11 is rotated by the energization of the motor unit 10, and the Wesco impeller 21 rotates in the pump chamber 23 to generate a suction action. After passing through the rotating Wesco-type blades 22 to form a vortex, the vortex forms a swirling flow in the pump chamber 23 and discharges flowing water from the discharge port to the outside of the pump 1. The direction in which the vortex is generated is switched by the conversion of the rotation and reverse operation, and the water inlet and the discharge port are automatically selected and the water is supplied.
[0027]
The swing valve 30 operates to open and close the opening 27 of the discharge port 25 depending on the direction of flowing water flowing in the pump chamber 23.
[0028]
During the reverse operation of the pump 1, the swing valve 30 opens the opening 27 of the discharge port 25 (FIGS. 1 and 3), and at the same time, shuts off the flow path 40 in the pump chamber 23 to the Is interrupted, and flowing water flows only into the discharge port 25 and is discharged.
[0029]
In addition, when the pump 1 rotates normally, the swing valve 30 closes the opening 27 of the discharge port 25 (FIGS. 2 and 4), opens the flow path 40 behind the discharge port 25, and blocks the flowing water. After passing through the discharge port 25, the water flows into the water-absorbing discharge port 26 behind the discharge port 25 and is discharged.
[0030]
The swing valve 30 is, for example, as shown in FIGS. 3 and 4, a rubber made up of a valve cover 31 that opens and closes the opening 27 of the discharge port 25 and a shielding plate 32 that shuts off the flow path 40 of the pump chamber 23. A valve made of an elastic body such as urethane, which is pinned to a valve stopper 33 provided on the inner wall of the pump chamber so as to operate in a one-sided manner, and which operates in an arc shape by the direction of the water flow and the water pressure with the pin as a fulcrum, or A pump that opens and closes a discharge port using its own weight and a water flow can be used. The discharge port 25 is surely opened and closed according to the water flow direction due to the normal rotation and reverse rotation of the pump, and the flow path 40 of the pump chamber 23 is shut off or Any structure may be used as long as it is open.
[0031]
The operation of the swing valve 30 during the operation of the pump 1 and the flow of flowing water in the pump chamber 23 will be described below.
[0032]
When the pump 1 rotates in reverse, as shown in FIGS. 3 and 5, flowing water 41 sucked from the suction / discharge port 26 flows through the pump chamber 23 toward the discharge port 25, and is provided behind the discharge port 25 by the water pressure. The opening valve 27 of the discharge port 25 is opened, and the shielding plate 32 is pressed against the partition plate 19 to close the flow path therebetween. Then, the flow path from the discharge port 25 to the rear of the pump chamber 23 is shut off, and the flowing water 42 in the pump chamber 23 flows only into the discharge port 25 and is discharged outside the pump 1. In addition, the direction of flowing water is regulated by the wall portion 28 of the second casing 9 provided in the flow path 40, and backflow in the pump chamber 23 is prevented.
[0033]
4 and 6, when the pump 1 rotates forward, the flowing water 43 sucked from the water suction port 24 flows through the pump chamber 23 in the direction of the discharge port 25, and the water pressure causes the swing valve 30 to be pushed down. The valve cover 31 covers the opening 27 to close the discharge port 25, and a flow path is opened between the shielding plate 32 and the partition plate 19 to open the flow path 40 behind the discharge port 25, and the pump The flowing water 44 flowing through the chamber 23 passes through the closed discharge port 25, flows into the water suction discharge port 26 behind the pump chamber 23, and is discharged outside the pump 1.
[0034]
Therefore, in the pump 1 having the above configuration, although one pump chamber 23 is provided with three openings, when the pump 1 rotates in reverse, the flowing water from the suction / discharge port 26 is discharged only from the discharge port 25, and At the time of normal rotation, the flowing water from the suction port 24 is discharged only from the water suction and discharge port 26, and the water suction port and the discharge port are automatically selected according to the normal rotation and the reverse rotation of the pump, and the water is reliably sent in a predetermined direction. One pump can fulfill the function of two pumps.
[0035]
Further, the pump 1 can form a forward rotation flow and a reverse rotation flow in one pump chamber using one kind of impeller, so that the pump structure is different from that of the conventional pump using two kinds of impellers. And the size of the pump can be reduced and the price can be reduced.
[0036]
Furthermore, the compactness of the pump structure has improved pump characteristics and improved performance such as low noise, making it easy to secure water absorption, discharge head and discharge volume, and reducing the number of parts compared to conventional products to achieve high reliability. You can also get sex.
[0037]
(Second embodiment)
FIG. 7 is a schematic view of a fully automatic washing machine 2 according to the second embodiment. The washing machine 2 has a washing tub 51 which accommodates laundry in the washing machine body and is rotated by a motor (M), and further has a tap water supply path 56, a drain path 61, and the like. This is a fully automatic washing machine having a general structure in which the processes of the washing course are controlled by a microcomputer and automatically perform all processes from water supply to washing and drainage, and a detailed description of the structure will be omitted.
[0038]
The washing machine 2 supplies the water 54 stored outside such as the bathtub 53 to the washing tub 51 for washing, and circulates the washing water and the rinsing water 52 of the washing tub 51 in the washing machine 2 during the washing. The pump 1 is built in the main body of the washing machine 2 as a pump for water supply and circulation.
[0039]
As shown in the figure, a pump 1 has a bath water suction pipe 57 connected to a bath water suction hole 62 inserted into a bathtub 53 outside the washing machine, and a washing water 52 of the washing tub 51 sucked by the pump 1. Circulating water supply pipe 58 for returning the water to the washing tub 51 again, and bath water 54 discharged from the pump 1 to the washing tub 51 (arrow A). The washing water 52 that has absorbed water is sent to the pump 1 (arrow B), and a water supply pipe 59 that shares the circulating water suction pipe is connected.
[0040]
Here, the water suction port 24 of the pump 1 is connected to a bath water suction pipe 57, the discharge port 25 is connected to a circulating water supply pipe 58, and the water suction discharge port 26 is connected to a water supply pipe 59.
The water supply pipe 59 is provided with a switching valve, and is divided into two paths: a water supply pipe for the bath water 54 to the washing tub 51 and a circulating water suction pipe for sending water absorbed from the washing tub 51 to the pump 1. It may be something.
[0041]
In the washing machine 2, when the bath water 54 in the bathtub 53 is used for washing and rinsing, the pump 1 is operated in the normal rotation, the suction action from the water suction port 24 of the pump 1 works, and the bathtub connected to the water suction port 24. Bath water 54 is absorbed from a bath water suction hole 62 in 53, flows into the pump 1 through a bath water suction pipe 57, is discharged from the water suction discharge port 26, and is supplied to the washing tub 51 through a water pipe 59. When the specified water level is reached, the pump 1 automatically stops.
[0042]
Further, when washing and rinsing are performed while circulating the washing water and the rinsing water in the washing tub 51 during the washing and rinsing, the pump 1 is operated in reverse, and water is absorbed by the suction action from the suction and discharge port 26 of the pump 1. The water in the washing tub 51 flows into the pump 1 through the water supply pipe 59, is discharged from the discharge port 25, returns to the washing tub 51 again through the circulating water supply pipe 58, circulates through the washing tub, and the washing and rinsing steps are performed. Upon completion, the pump 1 also automatically stops.
[0043]
Thus, in the washing machine 2, the single small pump 1 built in the main body supplies the external water such as bath water to the washing tub 51 and performs the washing while circulating the washing water and the rinsing water during the washing. Will be able to do it.
[0044]
Therefore, in the washing machine 2, dedicated pumps are not required for supplying water to the washing machine and for circulating the washing machine, respectively, and the pump 1 is smaller than the conventional reversible pump. And minimizing the installation space for its accessories and increasing the degree of freedom in selecting the pump installation location and making use of the idle space, making it possible to reduce the price, size, and size of the washing machine. It is.
[0045]
Further, the operability and durability of the washing machine can be improved by improving the pump characteristics of the built-in pump, improving the performance such as reducing noise, or improving the reliability.
[0046]
【The invention's effect】
As described above, in the pump of the present invention, it is possible to select a water intake port and a discharge port from three openings of the pump in accordance with switching between the normal rotation and the reverse rotation operation, and to supply water in a predetermined direction from a predetermined water source. Thus, a compact pump having a compact structure can be provided at low cost.
[0047]
Further, in the washing machine of the present invention, external water such as bath water can be supplied to the washing tub by one pump and the water in the washing tub can be circulated, so that the washing machine can be made compact and compact. In addition, a highly reliable washing machine capable of reducing the number of parts of the pump and its accessories and reducing the price can be obtained.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a pump according to a first embodiment at the time of reverse rotation.
FIG. 2 is a partial longitudinal sectional view of the pump according to the first embodiment at the time of normal rotation.
FIG. 3 is a partial cross-sectional view of the pump according to the first embodiment at the time of reverse rotation.
FIG. 4 is a partial transverse sectional view of the pump according to the first embodiment at the time of normal rotation.
FIG. 5 is a front sectional view of the pump chamber of the first embodiment at the time of reverse rotation.
FIG. 6 is a front sectional view of the pump chamber of the first embodiment at the time of normal rotation.
FIG. 7 is a schematic view of a washing machine according to a second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Pump 10 ... Motor part 11 ... Rotor 12 ... Magnetic body 13 ... Stator 15 ... Fixed shaft 20 ... Pump part 21 ... Impeller 22 ... Wesco type blade 23 ... Pump chamber 24 ... Water inlet (first port)
25 ... Discharge port (second port)
26 ... Water-absorbing discharge port (third port)
30 swing valve 31 valve cover 32 shielding plate 40 flow path

Claims (4)

ポンプ部にウエスコ型羽根を有する羽根車を配したポンプであり、
前記ポンプ部は、水を吸水又は吐出する3つの口を有し、
前記ウエスコ型羽根の外周部に流路を有し、
前記流路の両端部に第1の口と第3の口を設け、前記第1の口と第3の口の流路途中に第2の口が設けられ、
前記第2の口を自在に開閉し、かつ前記第2の口が開状態にある時は前記第1の口と前記第2の口との流路を遮断し、また閉状態にある時は前記第1の口と前記第2の口との流路を開放するスイング弁を備え、
前記羽根車の正転時には、前記スイング弁が前記第2の口を閉じて前記第1の口から吸引した水を前記第3の口から吐出し、
前記羽根車の逆転時には、前記スイング弁が前記第2の口を開状態にして、前記第3の口から吸引した水を前記第2の口から吐出する
ことを特徴とするポンプ。
A pump in which an impeller having Wesco-type blades is arranged in the pump section,
The pump unit has three ports for absorbing or discharging water,
Having a flow path on the outer periphery of the Wesco type blade,
A first port and a third port are provided at both ends of the flow path, and a second port is provided in the flow path between the first port and the third port,
The second port can be freely opened and closed, and when the second port is in the open state, the flow path between the first port and the second port is shut off, and when the second port is in the closed state, A swing valve that opens a flow path between the first port and the second port;
At the time of normal rotation of the impeller, the swing valve closes the second port and discharges water sucked from the first port from the third port,
The pump, wherein when the impeller rotates in the reverse direction, the swing valve opens the second port and discharges water sucked from the third port through the second port.
前記ポンプが、モータ部とポンプ部とが一体に構成されたポンプであり、
前記モータ部では、固定子の内周に磁性体を有する回転子が回転自在に配され、
前記回転子がウエスコ型羽根を有する羽根車を備えた
ことを特徴とする請求項1に記載のポンプ。
The pump is a pump in which a motor unit and a pump unit are integrally formed,
In the motor unit, a rotor having a magnetic material is rotatably arranged on the inner periphery of the stator,
The pump according to claim 1, wherein the rotor includes an impeller having Wesco-type blades.
前記モータ部が、モールド樹脂によりモールドされている
ことを特徴とする請求項2に記載のポンプ。
The pump according to claim 2, wherein the motor unit is molded with a molding resin.
外部の水を吸水して洗濯機の洗濯槽に供給し、また洗濯槽内の水を循環させるポンプを有する洗濯機において、
前記ポンプが請求項1〜3のいずれか1項に記載のポンプであって、
前記ポンプの正転時には、前記第1の口から吸引した外部の水を前記第3の口から前記洗濯槽へ供給し、
前記ポンプの逆転時には、前記第3の口から吸引した洗濯槽内の水を前記第2の口から前記洗濯槽内に循環させる
ことを特徴とする洗濯機。
In a washing machine having a pump that absorbs external water and supplies it to a washing tub of the washing machine, and circulates water in the washing tub,
The pump according to any one of claims 1 to 3, wherein
At the time of normal rotation of the pump, external water sucked from the first port is supplied to the washing tub from the third port,
When the pump is rotated in reverse, water in the washing tub sucked from the third port is circulated from the second port into the washing tub.
JP2002220284A 2002-07-29 2002-07-29 Pump and washing machine Pending JP2004060536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002220284A JP2004060536A (en) 2002-07-29 2002-07-29 Pump and washing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002220284A JP2004060536A (en) 2002-07-29 2002-07-29 Pump and washing machine

Publications (1)

Publication Number Publication Date
JP2004060536A true JP2004060536A (en) 2004-02-26

Family

ID=31940953

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002220284A Pending JP2004060536A (en) 2002-07-29 2002-07-29 Pump and washing machine

Country Status (1)

Country Link
JP (1) JP2004060536A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006037878A (en) * 2004-07-28 2006-02-09 Kawamoto Pump Mfg Co Ltd Cascade pump
JP2009261208A (en) * 2008-03-18 2009-11-05 Panasonic Electric Works Co Ltd Claw pole type motor and pump
JP2010028909A (en) * 2008-07-16 2010-02-04 Mitsubishi Electric Corp Molded stator, pump, water heater, electric motor, and method of manufacturing pumps
CN114383330A (en) * 2021-12-02 2022-04-22 安徽建筑大学设计研究总院有限公司 Three-pipe double-loop ground heat exchanger

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006037878A (en) * 2004-07-28 2006-02-09 Kawamoto Pump Mfg Co Ltd Cascade pump
JP2009261208A (en) * 2008-03-18 2009-11-05 Panasonic Electric Works Co Ltd Claw pole type motor and pump
JP2010028909A (en) * 2008-07-16 2010-02-04 Mitsubishi Electric Corp Molded stator, pump, water heater, electric motor, and method of manufacturing pumps
CN114383330A (en) * 2021-12-02 2022-04-22 安徽建筑大学设计研究总院有限公司 Three-pipe double-loop ground heat exchanger
CN114383330B (en) * 2021-12-02 2024-04-05 安徽建筑大学设计研究总院有限公司 Three-pipe double-loop ground buried pipe heat exchanger

Similar Documents

Publication Publication Date Title
JP4302955B2 (en) Pump and washing machine
JP2004060536A (en) Pump and washing machine
KR20050039759A (en) Drum type washing machine
JP2009243434A (en) Pump and liquid circulation device equipped with this
JP2007222242A (en) Pump and dishwasher
JP2006220034A (en) Pump and dish washer
JP2008012140A (en) Pump and washing machine provided with it
JP2006177330A (en) Pump
JP4143360B2 (en) Piping system and pump
JP2003148396A (en) Pump, and dish washer using pump
KR100234100B1 (en) Dishwasher
JP2003230527A (en) Pump and washing device
JP2008267357A (en) Pump and liquid circulating device with this
JP2004060620A (en) Reversible pump and dishwasher
KR200461049Y1 (en) Pump and washing machine having the same
JP4121290B2 (en) Pump and dishwasher
JP2003074488A (en) Water suction pump and washing machine using the pump
JP4352570B2 (en) Washing machine
JP3116943B2 (en) Self-priming pump
JP2006177329A (en) Pump
JP2003181193A (en) Washing machine
JP3125784B2 (en) Washing machine
JP2003120578A (en) Reversible pump
JP2003097495A (en) Pump and dish washer using the pump
JPH1024194A (en) Pump for washing machine

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050701

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080714

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080722

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20081118