JP2006177330A - Pump - Google Patents

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Publication number
JP2006177330A
JP2006177330A JP2004374365A JP2004374365A JP2006177330A JP 2006177330 A JP2006177330 A JP 2006177330A JP 2004374365 A JP2004374365 A JP 2004374365A JP 2004374365 A JP2004374365 A JP 2004374365A JP 2006177330 A JP2006177330 A JP 2006177330A
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JP
Japan
Prior art keywords
suction
passage
blade member
pump
fluid
Prior art date
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JP2004374365A
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Japanese (ja)
Inventor
Tatsuhiro Mamiya
龍洋 間宮
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Asahi Kogyo KK
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Asahi Kogyo KK
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Publication date
Application filed by Asahi Kogyo KK filed Critical Asahi Kogyo KK
Priority to JP2004374365A priority Critical patent/JP2006177330A/en
Priority to KR1020050127075A priority patent/KR100719747B1/en
Publication of JP2006177330A publication Critical patent/JP2006177330A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4278—Nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/11—Kind or type liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/60—Fluid transfer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pump capable of sucking a fluid into a storage space through a suction port and efficiently discharging the fluid to the outside of the pump from the storage space through a discharge port without lowering the rotating efficiency of a blade member rotated within the storage space. <P>SOLUTION: The storage space is formed in the pump, and the blade member rotatable both normally and reversely around an axis is provided in the storage space. The pump is provided with a suction part 42 having the suction port 42a for sucking wash water into the storage space from a direction to intersect the rotating plane of the blade member. A suction passage 41 is formed in the suction part 42, and a circular arc passage part 41b of the suction passage 41 is formed in circular arc shape to correspond to the rotating direction (A-direction) of the blade member. A slant face 41d slanting toward the inside of the storage space is formed at the downstream end in the flow direction of wash water of the circular arc passage part 41b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、例えば食器洗い機等に設けられるポンプに関するものである。   The present invention relates to a pump provided in, for example, a dishwasher.

従来、この種のポンプとしては、例えば特許文献１に記載のポンプが提案されている。このポンプは、ポンプハウジング（ポンプケーシング）を備えており、該ポンプハウジング内の収容空間にはモータの回転駆動に基づき回転可能な羽根部材（インペラ）が設けられている。また、前記ポンプハウジングには、前記収容空間内に洗浄水（流体）を吸入するための吸入口を有する吸入部が形成されており、該吸入部は前記羽根部材の回転軸線（所定軸線）に沿う方向から洗浄水を前記収容空間内に吸入するようになっている。また、前記ポンプハウジングには、羽根部材の回転に基づき前記収容空間内の洗浄水をポンプハウジング外に吐出するための吐出口を有する吐出部が形成されている。
特開平１１−３２９６２号公報（段落番号［００３２］、図１、図２） Conventionally, as this type of pump, for example, a pump described in Patent Document 1 has been proposed. This pump is provided with a pump housing (pump casing), and an accommodation space in the pump housing is provided with a blade member (impeller) that can rotate based on the rotational drive of a motor. Further, the pump housing is formed with a suction portion having a suction port for sucking cleaning water (fluid) in the accommodation space, and the suction portion is arranged on a rotation axis (predetermined axis) of the blade member. Washing water is sucked into the housing space from the direction along. Further, the pump housing is formed with a discharge portion having a discharge port for discharging the cleaning water in the housing space to the outside of the pump housing based on the rotation of the blade member.
Japanese Patent Laid-Open No. 11-32962 (paragraph number [0032], FIGS. 1 and 2)

ところで、前記ポンプでは、ポンプハウジング外から吸入部内に流入した洗浄水が、前記羽根部材の回転平面に略直交する方向から吸入口を介して前記収容空間内に吸入されることになる。すなわち、前記吸入口を介して収容空間内に流入してきた洗浄水は、その流入圧力が前記羽根部材の回転を妨げるように作用していた。そのため、前記ポンプでは、羽根部材の回転効率が低くなり、その結果、ポンプの吐出効率が低くなるという問題があった。   By the way, in the pump, the wash water that has flowed into the suction portion from the outside of the pump housing is sucked into the accommodation space from the direction substantially orthogonal to the rotation plane of the blade member through the suction port. That is, the wash water that has flowed into the accommodation space via the suction port acts so that the inflow pressure hinders the rotation of the blade member. Therefore, in the said pump, there existed a problem that the rotational efficiency of a blade member became low and, as a result, the discharge efficiency of a pump became low.

本発明は、このような事情に鑑みてなされたものである。その目的は、収容空間内で回転する羽根部材の回転効率を低下させることなく、吸入口を介して収容空間内へ流体を吸入させると共に、該収容空間内から吐出口を介して流体を効率良くポンプ外へ吐出することができるポンプを提供することにある。   The present invention has been made in view of such circumstances. The purpose is to allow the fluid to be sucked into the receiving space through the suction port and the fluid to be efficiently discharged from the receiving space through the discharge port without reducing the rotational efficiency of the blade member rotating in the receiving space. An object of the present invention is to provide a pump capable of discharging outside the pump.

上記目的を達成するために、請求項１に記載の発明は、ポンプハウジング内の収容空間に所定軸線を中心に回転可能な羽根部材が収容され、前記ポンプハウジングには、前記羽根部材の回転に基づき前記ポンプハウジング外から前記収容空間内に流体を吸入するための吸入口を有する吸入部と、前記羽根部材の回転に基づき前記収容空間内の流体を前記ポンプハウジング外に吐出するための吐出口を有する吐出部とが設けられ、前記吸入部内にポンプハウジング外から流入した流体を前記羽根部材の回転平面と交差する方向から前記吸入口を介して前記収容空間内に吸入させるポンプにおいて、前記吸入部内には、前記流体を前記羽根部材の回転平面に対して該羽根部材の回転方向の後方側から前方側に向かって下り勾配となる斜め方向から前記吸入口を介して前記収容空間内に吸入させるためのガイド手段が設けられたことを要旨とする。   In order to achieve the above object, according to the first aspect of the present invention, a blade member rotatable around a predetermined axis is accommodated in a housing space in the pump housing, and the pump housing is configured to rotate the blade member. A suction portion having a suction port for sucking fluid from outside the pump housing into the housing space, and a discharge port for discharging fluid in the housing space to the outside of the pump housing based on rotation of the blade member And a suction section having a discharge section having a suction section, wherein the fluid flowing into the suction section from the outside of the pump housing is sucked into the housing space from the direction intersecting the rotation plane of the blade member through the suction port. In the part, the fluid is inclined from an oblique direction in which the fluid is inclined downward from the rear side in the rotation direction of the blade member toward the front side with respect to the rotation plane of the blade member. Guide means for the suction in the housing space via the serial inlet and summarized in that is provided.

請求項２に記載の発明は、請求項１に記載のポンプにおいて、前記吸入部は、該吸入部の下流端に設けられる前記吸入口と、該吸入口の上流側から前記吸入口まで前記流体を導くための吸入通路とを含んで構成されており、前記ガイド手段は、前記吸入通路を形成する通路内面のうち前記収容空間内に向けて斜状をなす斜面にて構成されていることを要旨とする。   According to a second aspect of the present invention, in the pump according to the first aspect, the suction portion includes the suction port provided at a downstream end of the suction portion, and the fluid from the upstream side of the suction port to the suction port. A suction passage for guiding the suction passage, and the guide means is formed of an inclined surface inclined toward the inside of the accommodation space on the inner surface of the passage forming the suction passage. The gist.

請求項３に記載の発明は、請求項２に記載のポンプにおいて、前記吸入通路における前記斜面が形成された通路部分は、前記所定軸線を取り巻くように形成されていることを要旨とする。   The gist of a third aspect of the present invention is that, in the pump according to the second aspect, the passage portion where the inclined surface is formed in the suction passage is formed so as to surround the predetermined axis.

請求項４に記載の発明は、請求項１に記載のポンプにおいて、前記吸入部は、該吸入部の下流端に設けられる前記吸入口と、該吸入口の上流側から前記吸入口まで前記流体を導くための吸入通路とを含んで構成されており、前記ガイド手段は、前記所定軸線を取り巻くように螺旋状に形成された吸入通路の通路内面により構成されていることを要旨とする。   According to a fourth aspect of the present invention, in the pump according to the first aspect, the suction portion includes the suction port provided at a downstream end of the suction portion, and the fluid from the upstream side of the suction port to the suction port. The guide means is constituted by a passage inner surface of a suction passage formed in a spiral shape so as to surround the predetermined axis.

本発明によれば、収容空間内で回転する羽根部材の回転効率を低下させることなく、吸入口を介して収容空間内へ流体を吸入させると共に、該収容空間内から吐出口を介して流体を効率良くポンプ外へ吐出することができる。   According to the present invention, the fluid is sucked into the housing space through the suction port without reducing the rotational efficiency of the blade member rotating in the housing space, and the fluid is discharged from the housing space through the discharge port. It can be discharged out of the pump efficiently.

以下、本発明を食器洗い機用のポンプに具体化した一実施形態を図１〜図７に従って説明する。
図１に示すように、本実施形態の食器洗い機１０は、機本体１１内に、食器Ｄを洗浄する洗浄室１２と該洗浄室１２の下方に位置するポンプ室１３とを備えている。前記洗浄室１２とポンプ室１３とは、機本体１１内の内部スペース１４を仕切り板１５で上下に仕切ることにより区画形成されている。なお、以下における本明細書中の説明において、「上下左右方向」は図１における上下左右方向を示すものとする。 Hereinafter, an embodiment in which the present invention is embodied in a dishwasher pump will be described with reference to FIGS.
As shown in FIG. 1, a dishwasher 10 according to this embodiment includes a washing chamber 12 for washing tableware D and a pump chamber 13 located below the washing chamber 12 in the machine body 11. The cleaning chamber 12 and the pump chamber 13 are partitioned and formed by partitioning an internal space 14 in the machine main body 11 with a partition plate 15. In the following description in the present specification, “up / down / left / right direction” indicates the up / down / left / right direction in FIG.

前記洗浄室１２には、食器Ｄを配置するための食器籠１６が収容され、該食器籠１６は、水平方向（図１では左右方向）に延びるレール１７上にスライド移動可能に戴置されている。また、洗浄室１２の下部には、食器Ｄを洗浄する際に洗浄水（流体）を洗浄室１２内に噴射するためのノズル１８が回転可能な態様で配設されている。このノズル１８の上面には、複数の孔（図示略）が形成されており、ノズル１８の下面側からは、前記仕切り板１５を貫通形成してポンプ室１３内まで延びるように洗浄管路１９が設けられている。この洗浄管路１９は、ノズル１８の内部空間（図示略）を介して前記ノズル１８上面の各孔と繋がっている。そのため、洗浄室１２内の食器Ｄを洗浄する際には、洗浄管路１９を介してポンプ室１３側から供給された洗浄水が前記ノズル１８上面の各孔から洗浄室１２内に噴射されるようになっている。   The washing chamber 12 accommodates a tableware bowl 16 for arranging the tableware D, and the tableware bowl 16 is slidably placed on a rail 17 extending in the horizontal direction (left-right direction in FIG. 1). Yes. Further, a nozzle 18 for injecting cleaning water (fluid) into the cleaning chamber 12 when the tableware D is cleaned is disposed in a lower portion of the cleaning chamber 12 in a rotatable manner. A plurality of holes (not shown) are formed on the upper surface of the nozzle 18, and the cleaning pipe 19 extends from the lower surface side of the nozzle 18 so as to penetrate the partition plate 15 and extend into the pump chamber 13. Is provided. The cleaning pipe 19 is connected to each hole on the upper surface of the nozzle 18 through an internal space (not shown) of the nozzle 18. Therefore, when cleaning the tableware D in the cleaning chamber 12, the cleaning water supplied from the pump chamber 13 side through the cleaning pipe 19 is jetted into the cleaning chamber 12 from each hole on the upper surface of the nozzle 18. It is like that.

また、前記洗浄室１２の左側には、機本体１１の側壁の一部を構成すると共に、機本体１１に対して開閉可能に形成された開閉扉２０が設けられている。そして、この開閉扉２０は、食器Ｄを洗浄室１２内の食器籠１６に配置する際や洗浄後に食器Ｄを洗浄室１２から外部へ取り出す際等に開放され、それら以外の時には閉じられるようになっている。また、洗浄室１２の右側には、所定容量の洗浄水を機本体１１の外部から洗浄室１２内に注入するための注入通路２１が形成されている。また、洗浄室１２の底部には、該洗浄室１２から洗浄水をポンプ室１３に流下させて吸入するための取水口２２が設けられており、該取水口２２には、食器Ｄに付着した残飯等が洗浄水と共にポンプ室１３に吸入されないようにするべく、残飯等を取り除くフィルタＦが配設されている。   On the left side of the cleaning chamber 12, there is provided an opening / closing door 20 that constitutes a part of the side wall of the machine body 11 and that can be opened and closed with respect to the machine body 11. The opening / closing door 20 is opened when the tableware D is placed in the tableware bowl 16 in the cleaning chamber 12 or when the tableware D is taken out from the cleaning chamber 12 after cleaning, and is closed at other times. It has become. Further, an injection passage 21 for injecting a predetermined volume of cleaning water into the cleaning chamber 12 from the outside of the machine body 11 is formed on the right side of the cleaning chamber 12. In addition, a water intake port 22 is provided at the bottom of the cleaning chamber 12 to allow the cleaning water to flow down from the cleaning chamber 12 to the pump chamber 13 and to be sucked in. The water intake port 22 adheres to the tableware D. A filter F for removing leftovers and the like is provided to prevent leftovers and the like from being sucked into the pump chamber 13 together with the cleaning water.

一方、前記ポンプ室１３には、前記洗浄室１２から取水口２２を介して流下する洗浄水を貯留するための貯留槽２３が設けられている。また、貯留槽２３の側方（図１における右側）にはポンプＰが収容配置されており、該ポンプＰは吸水管路２４を介して前記貯留槽２３と連結されている。そのため、貯留槽２３内に一旦貯留された洗浄水は、吸水管路２４を介してポンプＰ内に水平方向から吸水されることになる。そして、洗浄室１２内の食器Ｄを洗浄する場合には、前記ポンプＰの駆動に基づきポンプＰ内から洗浄水が前記洗浄管路１９を介して前記ノズル１８に供給され、当該ノズル１８上面の各孔から洗浄室１２内に噴射される。一方、前記洗浄水を排水する場合には、前記ポンプＰの駆動に基づきポンプＰ内から洗浄水が、該ポンプＰと所定の水頭差を持つように配設された排水管路２５に導出され、該排水管路２５を介して機本体１１外に排水される。   On the other hand, the pump chamber 13 is provided with a storage tank 23 for storing the cleaning water flowing down from the cleaning chamber 12 through the water intake port 22. Further, a pump P is accommodated and disposed on the side of the storage tank 23 (the right side in FIG. 1), and the pump P is connected to the storage tank 23 via a water absorption pipe 24. Therefore, the wash water once stored in the storage tank 23 is absorbed into the pump P from the horizontal direction via the water absorption conduit 24. When cleaning the tableware D in the cleaning chamber 12, cleaning water is supplied from the pump P to the nozzle 18 through the cleaning pipe 19 based on the driving of the pump P, and the upper surface of the nozzle 18 is It is injected into the cleaning chamber 12 from each hole. On the other hand, when the washing water is drained, the washing water is led out from the pump P to the drain pipe 25 arranged so as to have a predetermined head difference from the pump P based on the driving of the pump P. The water is drained out of the main body 11 through the drain pipe 25.

次に、前記ポンプＰの具体的構成について説明する。
前記ポンプＰは、図２に示すように、モータ部２６とポンプ部２７とから構成されている。モータ部２６は、図示しない電源に接続されたモータ（例えば直流モータ）Ｍを備えてなり、該モータＭの内部には、回転子及び固定子（共に図示略）が配設されている。前記回転子には、モータ部２６（モータＭ）の内部からポンプ部２７内まで延びるシャフト２８が固着されている。そして、本実施形態では、モータＭの固定子に供給される電流の方向に対応して、前記回転子がシャフト２８と共に該シャフト２８の軸線（所定軸線）Ｓを回転中心にして正逆両方向に回転するようになっている。 Next, a specific configuration of the pump P will be described.
As shown in FIG. 2, the pump P includes a motor part 26 and a pump part 27. The motor unit 26 includes a motor (for example, a DC motor) M connected to a power source (not shown), and a rotor and a stator (both not shown) are disposed inside the motor M. A shaft 28 extending from the inside of the motor part 26 (motor M) to the inside of the pump part 27 is fixed to the rotor. In the present embodiment, corresponding to the direction of the current supplied to the stator of the motor M, the rotor and the shaft 28 are rotated in both forward and reverse directions with the axis (predetermined axis) S of the shaft 28 as the rotation center. It is designed to rotate.

一方、前記ポンプ部２７は、前記モータＭが載置固定される上側ポンプハウジング２９と、この上側ポンプハウジング２９の下面側に取り付けられる円環状をなすリングプレート３０と、このリングプレート３０を挟んで前記上側ポンプハウジング２９に組み付けられる下側ポンプハウジング３１とを備えている。上側ポンプハウジング２９の下面側において前記モータＭの直下となる部分には、前記リングプレート３０の外周形状に対応した形状をなすプレート用凹部２９ａが形成されている。そして、前記リングプレート３０は、このプレート用凹部２９ａ内に嵌合され、図示しないねじによって前記上側ポンプハウジング２９に締付け固定されている。   On the other hand, the pump unit 27 includes an upper pump housing 29 on which the motor M is mounted and fixed, an annular ring plate 30 attached to the lower surface side of the upper pump housing 29, and the ring plate 30 interposed therebetween. And a lower pump housing 31 assembled to the upper pump housing 29. A plate recess 29 a having a shape corresponding to the outer peripheral shape of the ring plate 30 is formed in a portion directly below the motor M on the lower surface side of the upper pump housing 29. The ring plate 30 is fitted in the plate recess 29a and is fastened and fixed to the upper pump housing 29 by screws (not shown).

また、上側ポンプハウジング２９と下側ポンプハウジング３１とは、両者間にＯリング３２を介在させた状態で一体化するように組み付けられる。そして、その一体組み付け状態において、前記上側ポンプハウジング２９の上面側に前記モータＭが複数本（図２では２本のみ図示）のねじ３３にて接合固定されることにより、ポンプ部２７とモータ部２６とが一体結合する構成とされている。また、こうして上側ポンプハウジング２９、リングプレート３０及び下側ポンプハウジング３１がＯリング３２を介在させて一体組み付けされることにより、下側ポンプハウジング３１の上面側において前記リングプレート３０の直下となる部分に凹設されている収容空間３４が密封空間とされる。   The upper pump housing 29 and the lower pump housing 31 are assembled so as to be integrated with an O-ring 32 interposed therebetween. In the integrally assembled state, the motor M is joined and fixed to the upper surface side of the upper pump housing 29 with a plurality of screws 33 (only two are shown in FIG. 2). 26 is integrally connected. Further, the upper pump housing 29, the ring plate 30 and the lower pump housing 31 are integrally assembled with the O-ring 32 interposed therebetween, so that the portion directly below the ring plate 30 on the upper surface side of the lower pump housing 31. The housing space 34 that is recessed in the housing is a sealed space.

また、前記上側ポンプハウジング２９において前記リングプレート３０の内周縁３０ａの内側となる部分には、前記シャフト２８を挿通可能とする貫通孔２９ｂが形成されている。そして、前記ポンプ部２７がモータ部２６に一体結合された状態において、モータ部２６側から延びたシャフト２８が上側ポンプハウジング２９の前記貫通孔２９ｂを挿通して下側ポンプハウジング３１の前記収容空間３４内まで延設されている。そして、この下側ポンプハウジング３１の収容空間３４内において、前記シャフト２８の先端（下端）には、羽根部材３５が取り付けられている。   Further, a through hole 29 b through which the shaft 28 can be inserted is formed in a portion of the upper pump housing 29 that is inside the inner peripheral edge 30 a of the ring plate 30. In the state in which the pump unit 27 is integrally coupled to the motor unit 26, the shaft 28 extending from the motor unit 26 side passes through the through hole 29 b of the upper pump housing 29 and the accommodation space of the lower pump housing 31. 34 is extended to the inside. A blade member 35 is attached to the tip (lower end) of the shaft 28 in the accommodation space 34 of the lower pump housing 31.

前記羽根部材３５は、図３に示すように、略円盤形状をなす円盤部３６と、該円盤部３６の中央付近に形成されたハブ部３７と、該ハブ部３７の外周面３７ａから外周方向に延びる複数枚（本実施形態では１０枚）の板状をなす羽根部３８とから構成されている。そして、ハブ部３７の略中央には前記上側ポンプハウジング２９の貫通孔２９ｂと同軸配置となる貫通孔３７ｂが形成されており、前記羽根部材３５は、この貫通孔３７ｂに前記シャフト２８が嵌合されることにより、シャフト２８に対して固定支持されるようになっている。そのため、前記羽根部材３５は、前記モータＭの回転駆動に基づきシャフト２８が回転した場合には、該シャフト２８と共に前記軸線Ｓを中心に正逆両方向（図３に示すＡ方向及びＢ方向）に回転するようになっている。なお、本実施形態の各羽根部３８は、軸線Ｓ側から外周方向に延びるにつれて、Ａ方向（正方向）を回転方向前方側とした場合において次第に回転方向後方（Ｂ方向）側へ傾斜した羽根形状（所謂、後退翼形状）に形成されている。   As shown in FIG. 3, the blade member 35 includes a disk part 36 having a substantially disk shape, a hub part 37 formed near the center of the disk part 36, and an outer circumferential direction from the outer peripheral surface 37 a of the hub part 37. It is comprised from the blade | wing part 38 which makes the plate shape of several sheets (this embodiment 10 sheets) extended in this. A through hole 37b that is coaxial with the through hole 29b of the upper pump housing 29 is formed substantially at the center of the hub portion 37, and the blade member 35 has the shaft 28 fitted into the through hole 37b. As a result, the shaft 28 is fixedly supported. Therefore, when the shaft 28 is rotated based on the rotational drive of the motor M, the blade member 35 moves in both forward and reverse directions (A direction and B direction shown in FIG. 3) with the shaft S as the center. It is designed to rotate. In addition, each blade | wing part 38 of this embodiment is a blade | wing gradually inclined to the rotation direction back (B direction) side, when A direction (positive direction) is made into the rotation direction front side as it extends in the outer peripheral direction from the axis S side. It is formed in a shape (so-called swept wing shape).

また、前記上側ポンプハウジング２９には、前記貫通孔２９ｂを中心とした部位を下方に向けて窪ませたボス３９が形成されており、該ボス３９の裏面側（すなわち、上面側）に凹み形成された凹部３９ａ内には、複数（本実施形態では２つ）のリング状をなすオイルシール４０が介装されている。そして、前記貫通孔２９ｂを挿通するシャフト２８の外周面が各オイルシール４０によりシールされるようになっている。   Further, the upper pump housing 29 is formed with a boss 39 in which a portion centered on the through hole 29b is recessed downward, and a recess is formed on the back surface side (that is, the upper surface side) of the boss 39. A plurality of (two in this embodiment) ring-shaped oil seals 40 are interposed in the recessed portion 39a. And the outer peripheral surface of the shaft 28 which penetrates the said through-hole 29b is sealed by each oil seal 40. As shown in FIG.

また、前記上側ポンプハウジング２９の下面側には、前記吸水管路２４と上流端側が連通する吸入通路４１が形成されている。前記吸入通路４１は、図４に示すように、洗浄水の流動方向上流側（図４では左側）から前記ボス３９の形成部位に向けて真っ直ぐに延びる直線通路部４１ａと、ボス３９を取り巻く円弧状に形成された円弧通路部４１ｂとから構成されている。前記円弧通路部４１ｂは、その下流端が前記羽根部材３５の回転方向である正逆両方向のうちＡ方向（図４では時計回りの方向）を指向するように形成されている。また、直線通路部４１ａと円弧通路部４１ｂとの連通部位と、円弧通路部４１ｂの下流端との間には、円弧通路部４１ｂ内を流動方向下流端まで流動した洗浄水が、前記直線通路部４１ａと円弧通路部４１ｂとの連通部位に再び流入することを規制するための隔壁部４１ｃが設けられている。   Further, a suction passage 41 is formed on the lower surface side of the upper pump housing 29 so that the water suction pipe 24 communicates with the upstream end side. As shown in FIG. 4, the suction passage 41 includes a straight passage portion 41 a that extends straight from the upstream side in the flow direction of the cleaning water (left side in FIG. 4) toward the formation portion of the boss 39 and a circle surrounding the boss 39. An arc passage portion 41b formed in an arc shape. The circular arc passage portion 41b is formed so that the downstream end thereof is directed in the A direction (the clockwise direction in FIG. 4) in both the forward and reverse directions that are the rotation directions of the blade member 35. Further, between the communicating portion of the linear passage portion 41a and the arc passage portion 41b and the downstream end of the arc passage portion 41b, the wash water that has flowed in the arc passage portion 41b to the downstream end in the flow direction is the linear passage. A partition wall 41c is provided for restricting the flow into the communication portion between the portion 41a and the arc passage portion 41b.

そして、前記羽根部材３５の回転に基づき発生した吸引力に従って前記吸入通路４１内を直線通路部４１ａ側から円弧通路部４１ｂへと流動した洗浄水は、前記リングプレート３０の内周縁３０ａと前記ボス３９の外周面３９ｂとの間のリング状の隙間を介して前記収容空間３４内に吸入されるようになっている。すなわち、本実施形態では、前記リングプレート３０の内周縁３０ａと前記ボス３９の外周面３９ｂとの間のリング状の隙間により吸入口４２ａが構成されている。この吸入口４２ａは、前記吸入通路４１の下流端に設けられるものであり、前記円弧通路部４１ｂ内を流動した洗浄水は、前記軸線Ｓと直交する前記羽根部材３５の回転平面４３と交差する方向から、当該吸入口４２ａを介して収容空間３４内に吸入される。そして、本実施形態では、前記吸入口４２ａと吸入通路４１とにより前記羽根部材３５の回転に基づきポンプＰ外から収容空間３４内に洗浄水（流体）を吸入するための吸入部４２が構成されている。   Then, the washing water that has flowed from the linear passage portion 41a side to the arc passage portion 41b in the suction passage 41 according to the suction force generated based on the rotation of the blade member 35 is caused by the inner peripheral edge 30a of the ring plate 30 and the boss. The air is sucked into the accommodation space 34 through a ring-shaped gap between the outer peripheral surface 39 b of 39. That is, in the present embodiment, the suction port 42 a is configured by a ring-shaped gap between the inner peripheral edge 30 a of the ring plate 30 and the outer peripheral surface 39 b of the boss 39. The suction port 42 a is provided at the downstream end of the suction passage 41, and the wash water that has flowed through the arc passage portion 41 b intersects the rotation plane 43 of the blade member 35 that is orthogonal to the axis S. From the direction, the air is sucked into the accommodation space 34 through the suction port 42a. In the present embodiment, the suction port 42 a and the suction passage 41 constitute a suction portion 42 for sucking cleaning water (fluid) from the outside of the pump P into the accommodation space 34 based on the rotation of the blade member 35. ing.

また、前記吸入通路４１（円弧通路部４１ｂ）の下流端側において円弧通路部４１ｂを形成する通路内面（詳しくは、前記収容空間３４と上下方向で対向する通路内面であって、図５及び図６では上面）は、図５及び図６に示すように、前記収容空間３４内に向けて斜状をなす斜面４１ｄに形成されている。そのため、前記吸入通路４１（円弧通路部４１ｂ）内を斜面４１ｄに沿って下流方向へ流動した洗浄水は、前記羽根部材３５の正逆両方向への回転のうちＡ方向への回転時において、該回転方向の後方（Ｂ方向）側から前方（Ａ方向）側に向かって下り勾配となる斜め方向から前記収容空間３４内に吸入されることになる。すなわち、本実施形態では、円弧通路部４１ｂの斜面４１ｄが前記吸入通路４１内を流動する洗浄水（流体）を前記羽根部材３５の回転平面４３に対して羽根部材３５の回転方向の後方側から前方側に向かって下り勾配となる斜め方向から前記吸入口４２ａを介して前記収容空間３４内に吸入させるガイド手段として機能するようになっている。   Further, the inner surface of the passage that forms the arc passage portion 41b on the downstream end side of the suction passage 41 (the arc passage portion 41b) (specifically, the inner surface of the passage that faces the accommodating space 34 in the up-down direction, FIG. As shown in FIGS. 5 and 6, the upper surface 6 is formed on an inclined surface 41 d that is inclined toward the inside of the accommodation space 34. Therefore, the wash water that has flowed in the suction passage 41 (arc passage portion 41b) in the downstream direction along the inclined surface 41d is, when the blade member 35 is rotated in the A direction during the rotation in both the forward and reverse directions. The air is sucked into the accommodation space 34 from an oblique direction having a downward gradient from the rear (B direction) side to the front (A direction) side in the rotation direction. That is, in the present embodiment, the inclined water 41 d of the arc passage portion 41 b causes the cleaning water (fluid) flowing in the suction passage 41 to flow from the rear side in the rotation direction of the blade member 35 with respect to the rotation plane 43 of the blade member 35. It functions as a guide means for sucking into the accommodation space 34 through the suction port 42a from an oblique direction with a downward slope toward the front side.

ここで、収容空間３４内まで延設されたシャフト２８と上側ポンプハウジング２９の貫通孔２９ｂとの間には、シャフト２８及び羽根部材３５の回転を許容するために僅かな隙間（クリアランス）が存在する。しかし、上述したように、シャフト２８におけるモータＭと収容空間３４との間の軸方向位置には、前記ボス３９の凹部３９ａ内に介装された各オイルシール４０が嵌合状態で取り付けられている。そのため、このオイルシール４０のシール機能により、収容空間３４側からシャフト２８の外周面を伝ってモータＭ側へ洗浄水が漏れ入ることが抑制される。この点で、前記ボス３９及び各オイルシール４０は、前記収容空間３４内の洗浄水がシャフト２８に沿ってモータＭ内に漏れ入ることを抑制する軸封部４４として機能する。   Here, a slight gap (clearance) exists between the shaft 28 extending into the accommodation space 34 and the through hole 29b of the upper pump housing 29 to allow the shaft 28 and the blade member 35 to rotate. To do. However, as described above, each oil seal 40 interposed in the recess 39a of the boss 39 is attached in a fitted state to the axial position of the shaft 28 between the motor M and the accommodation space 34. Yes. Therefore, the sealing function of the oil seal 40 prevents the cleaning water from leaking from the housing space 34 side to the motor M side along the outer peripheral surface of the shaft 28. In this respect, the boss 39 and each oil seal 40 function as a shaft seal portion 44 that prevents the cleaning water in the accommodation space 34 from leaking into the motor M along the shaft 28.

前記下側ポンプハウジング３１の周壁部３１ａ（具体的には、前記収容空間３４を取り巻く周壁部分から径方向外側へ突出するように張り出された周壁部分）には、第１吐出口４５ａが形成されており、前記上側ポンプハウジング２９には、前記洗浄管路１９に対する連結部４５ｂが上方に向けて突出形成されている。この第１吐出口４５ａと連結部４５ｂとは下側ポンプハウジング３１及び上側ポンプハウジング２９に渡って形成された図示しない通路を介して連通されている。そして、本実施形態では、この第１吐出口４５ａ及び連結部４５ｂにより前記羽根部材３５のＡ方向への回転に基づき前記収容空間３４内の洗浄水をポンプＰ外（洗浄室１２内）に吐出するための第１吐出部４５が構成されている。   A first discharge port 45a is formed in the peripheral wall portion 31a of the lower pump housing 31 (specifically, the peripheral wall portion projecting so as to protrude radially outward from the peripheral wall portion surrounding the housing space 34). In the upper pump housing 29, a connecting portion 45b for the cleaning pipe 19 is formed to protrude upward. The first discharge port 45a and the connecting portion 45b are communicated with each other through a passage (not shown) formed over the lower pump housing 31 and the upper pump housing 29. In the present embodiment, the cleaning water in the accommodation space 34 is discharged out of the pump P (inside the cleaning chamber 12) based on the rotation of the blade member 35 in the A direction by the first discharge port 45a and the connecting portion 45b. The 1st discharge part 45 for doing is comprised.

また、前記下側ポンプハウジング３１の周壁部３１ａにおいて、前記第１吐出口４５ａから見て周方向へ所定角度離間した位置（図３では反時計方向へ略４５度離間した位置）には、第２吐出口４６ａが形成されると共に、前記排水管路２５に対する連結部４６ｂが前記シャフト２８の径方向に向けて突出形成されている。そして、本実施形態では、この第２吐出口４６ａ及び連結部４６ｂにより前記羽根部材３５のＢ方向への回転に基づき前記収容空間３４内の洗浄水をポンプＰ外（食器洗い機１０の外部）に吐出するための第２吐出部４６が構成されている。   Further, in the peripheral wall portion 31a of the lower pump housing 31, a position separated by a predetermined angle in the circumferential direction when viewed from the first discharge port 45a (a position spaced approximately 45 degrees counterclockwise in FIG. 3) Two discharge ports 46 a are formed, and a connecting portion 46 b for the drainage pipe 25 is formed to protrude in the radial direction of the shaft 28. In the present embodiment, the washing water in the accommodation space 34 is discharged outside the pump P (outside the dishwasher 10) based on the rotation of the blade member 35 in the B direction by the second discharge port 46a and the connecting portion 46b. A second discharge unit 46 for discharging is configured.

前記第２吐出口４６ａは、その通路断面積が前記第１吐出口４５ａの通路断面積よりも小さくなるように形成されている。また、本実施形態のモータＭは、前記羽根部材３５の正逆両方向（Ａ方向及びＢ方向）への回転のうちＡ方向への回転がＢ方向への回転よりも速くなるように設定されている。そのため、羽根部材３５をＡ方向へ回転させた場合における第１吐出口４５ａから前記洗浄室１２内への単位時間あたりの洗浄水の吐出量が、羽根部材３５をＢ方向へ回転させた場合における第２吐出口４６ａから食器洗い機１０外への単位時間あたりの洗浄水の吐出量よりも多くなるようになっている。   The second discharge port 46a is formed such that its passage sectional area is smaller than the passage sectional area of the first discharge port 45a. Further, the motor M of the present embodiment is set so that the rotation in the A direction out of the rotation of the blade member 35 in both the forward and reverse directions (A direction and B direction) is faster than the rotation in the B direction. Yes. Therefore, when the blade member 35 is rotated in the A direction, the discharge amount of the cleaning water per unit time from the first discharge port 45a into the cleaning chamber 12 is the same as that when the blade member 35 is rotated in the B direction. The amount of washing water discharged from the second outlet 46a to the outside of the dishwasher 10 per unit time is increased.

また、前記下側ポンプハウジング３１内において前記周壁部３１ａの内周面と前記羽根部材３５の外周縁３５ａとの間には、前記収容空間３４内で洗浄水を羽根部材３５の回転方向と同一方向へ流動させるための流体通路４７が円弧状に形成されている。そして、前記収容空間３４内の洗浄水は、前記羽根部材３５がＡ方向に回転した場合には流体通路４７内をＡ方向に流動し、前記羽根部材３５がＢ方向に回転した場合には流体通路４７内をＢ方向に流動するようになっている。なお、前記羽根部材３５の外周縁３５ａとは、前記羽根部材３５の構成要素である円盤部３６の外周縁に対応するものであり、同じく前記羽根部材３５の構成要素である各羽根部３８の先端の回転軌跡のことを示している。   Further, in the lower pump housing 31, the cleaning water is disposed in the same space as the rotation direction of the blade member 35 between the inner peripheral surface of the peripheral wall portion 31 a and the outer peripheral edge 35 a of the blade member 35. A fluid passage 47 for flowing in the direction is formed in an arc shape. The cleaning water in the accommodation space 34 flows in the fluid passage 47 in the A direction when the blade member 35 rotates in the A direction, and flows in the fluid passage 47 when the blade member 35 rotates in the B direction. It flows in the B direction in the passage 47. The outer peripheral edge 35 a of the blade member 35 corresponds to the outer peripheral edge of the disk portion 36 that is a component of the blade member 35, and each blade portion 38 that is also a component of the blade member 35. It shows the rotation trajectory of the tip.

また、前記下側ポンプハウジング３１の周壁部３１ａのうち周方向において前記第１吐出口４５ａと第２吐出口４６ａとの間となる部分は、その内面（すなわち、羽根部材３５の外周縁３５ａとの対向面）４８ａが、前記羽根部材３５の外周縁３５ａに近接するように、周壁部３１ａの壁厚が内周側へ厚く形成された誘導規制部４８とされている。すなわち、この部分には、前記流体通路４７よりも小さい通路断面積を有するクリアランス４７ａが形成されており、該クリアランス４７ａは羽根部材３５の回転を許容するだけの僅かな通路断面積しか有していない。そのため、羽根部材３５がＡ方向へ回転した場合、前記流体通路４７に沿って第１吐出口４５ａ側へと導水（誘導）された洗浄水の大部分は、前記誘導規制部４８により第２吐出口４６ａ側へと更に導水されるのを規制される。一方、羽根部材３５がＢ方向へ回転した場合には、前記流体通路４７に沿って第２吐出口４６ａ側へと導水（誘導）された洗浄水の大部分は、同様に前記誘導規制部４８によって第１吐出口４５ａ側へと更に導水されるのを規制されるようになっている。   A portion of the peripheral wall portion 31a of the lower pump housing 31 that is between the first discharge port 45a and the second discharge port 46a in the circumferential direction is an inner surface thereof (that is, the outer peripheral edge 35a of the blade member 35 and 48a is a guide restricting portion 48 in which the wall thickness of the peripheral wall portion 31a is formed thicker toward the inner peripheral side so as to be close to the outer peripheral edge 35a of the blade member 35. That is, a clearance 47a having a smaller passage cross-sectional area than the fluid passage 47 is formed in this portion, and the clearance 47a has a slight passage cross-sectional area that allows the blade member 35 to rotate. Absent. Therefore, when the blade member 35 rotates in the A direction, most of the wash water guided (induced) along the fluid passage 47 toward the first discharge port 45a is second discharged by the induction restricting portion 48. Further water introduction to the outlet 46a side is restricted. On the other hand, when the blade member 35 rotates in the direction B, most of the washing water guided (guided) along the fluid passage 47 to the second discharge port 46a side is similarly the guidance regulating portion 48. Therefore, further water introduction to the first discharge port 45a side is restricted.

前記誘導規制部４８には、図７に示すように、前記流体通路４７と第１吐出口４５ａとの間において前記周壁部３１ａに向けて延びる第１突壁部４９が突設されている。この第１突壁部４９は、その内面（すなわち、羽根部材３５の外周縁３５ａとの対向面）４９ａが誘導規制部４８の円弧面状をなす内面４８ａの延長方向に沿うように形成されている。そのため、前記クリアランス４７ａの通路幅は、第１突壁部４９の形成部分においても変更されないようになっている。そして、前記流体通路４７と第１吐出口４５ａとの間（すなわち、第１吐出口４５ａの直前）であって前記第１突壁部４９の先端４９ｂ側には、第１吐出口４５ａの通路断面積よりも小さい通路断面積を有する第１狭小領域（図３及び図７にて一点鎖線で示す領域）５０が形成されている。前記第１突壁部４９は、第１狭小領域５０から第１吐出口４５ａまでの通路断面積が次第に大きくなるように形成されている。   As shown in FIG. 7, a first projecting wall portion 49 that extends toward the peripheral wall portion 31a is provided between the fluid passage 47 and the first discharge port 45a. The first projecting wall portion 49 is formed such that an inner surface (that is, a surface facing the outer peripheral edge 35 a of the blade member 35) 49 a extends along the extending direction of the inner surface 48 a that forms the arc surface shape of the guidance restricting portion 48. Yes. For this reason, the passage width of the clearance 47a is not changed even in the portion where the first protruding wall portion 49 is formed. The passage of the first discharge port 45a is between the fluid passage 47 and the first discharge port 45a (that is, immediately before the first discharge port 45a) and on the tip 49b side of the first protruding wall portion 49. A first narrow region (region indicated by a one-dot chain line in FIGS. 3 and 7) having a passage sectional area smaller than the sectional area is formed. The first projecting wall portion 49 is formed such that a passage sectional area from the first narrow region 50 to the first discharge port 45a gradually increases.

また、前記第１突壁部４９における周方向の先端４９ｂと前記軸線Ｓとを結ぶ直線Ｓ１をＡ方向（図７では反時計回りの方向）に所定角度だけ回転させた場合、直線Ｓ１の延びる方向は、前記第１吐出口４５ａにおける周方向の両端部のうち前記誘導規制部４８から遠い方の端部と前記軸線Ｓとを結ぶ直線Ｓ２の延びる方向と一致するようになっている。すなわち、第１突壁部４９は、該第１突壁部４９が対応する第１吐出口４５ａを前記羽根部材３５の軸線（所定軸線）Ｓから見た場合に、当該第１吐出口４５ａを非視認状態とするように（すなわち、視認できないように）、その先端４９ｂが周方向へ突出形成されていることになる。   Further, when the straight line S1 connecting the circumferential tip 49b of the first projecting wall portion 49 and the axis S is rotated by a predetermined angle in the A direction (counterclockwise direction in FIG. 7), the straight line S1 extends. The direction coincides with the extending direction of the straight line S2 that connects the end portion far from the guide restricting portion 48 and both ends of the first discharge port 45a in the circumferential direction. In other words, the first projecting wall portion 49 has the first ejection port 45a when the first ejection port 45a corresponding to the first projecting wall portion 49 is viewed from the axis (predetermined axis) S of the blade member 35. The tip 49b is formed to protrude in the circumferential direction so as to be in a non-visible state (that is, not visible).

また、前記誘導規制部４８には、図７に示すように、前記流体通路４７と第２吐出口４６ａとの間において前記周壁部３１ａに向けて延びる第２突壁部５１が突設されている。前記第２突壁部５１は、前記羽根部材３５の外周縁３５ａに沿って延びると共に、その内面（すなわち、羽根部材３５の外周縁３５ａとの対向面）５１ａが誘導規制部４８の円弧面状をなす内面４８ａの延長方向に沿うように形成されている。そのため、前記クリアランス４７ａの通路幅は、第２突壁部５１の形成部分においても変更されないようになっている。そして、前記流体通路４７と第２吐出口４６ａとの間（すなわち、第２吐出口４６ａの直前）であって前記第２突壁部５１の先端５１ｂ側には、該第２吐出口４６ａの通路断面積よりも小さい通路断面積を有する第２狭小領域（図３及び図７にて一点鎖線で示す領域）５２が形成されている。そして更に、この第２狭小領域５２は、その通路断面積が前記第１狭小領域５０の通路断面積よりも小さくなるように形成されている。   Further, as shown in FIG. 7, a second projecting wall portion 51 that extends toward the peripheral wall portion 31 a is provided between the fluid passage 47 and the second discharge port 46 a in the guidance restricting portion 48. Yes. The second protruding wall portion 51 extends along the outer peripheral edge 35 a of the blade member 35, and the inner surface (that is, the surface facing the outer peripheral edge 35 a of the blade member 35) 51 a has a circular arc surface shape of the guidance restricting portion 48. Is formed along the extending direction of the inner surface 48a. For this reason, the passage width of the clearance 47a is not changed even in the portion where the second protruding wall portion 51 is formed. Then, between the fluid passage 47 and the second discharge port 46a (that is, immediately before the second discharge port 46a) and on the tip 51b side of the second protruding wall portion 51, the second discharge port 46a is provided. A second narrow region (region indicated by a one-dot chain line in FIGS. 3 and 7) 52 having a passage sectional area smaller than the passage sectional area is formed. Further, the second narrow region 52 is formed such that its passage sectional area is smaller than the passage sectional area of the first narrow region 50.

また、前記第２突壁部５１における周方向の先端５１ｂと前記軸線Ｓとを結ぶ直線Ｓ３をＢ方向（図７では時計回りの方向）に所定角度だけ回転させた場合、直線Ｓ３の延びる方向は、前記第２吐出口４６ａにおける周方向の両端部のうち前記誘導規制部４８から遠い方の端部と前記軸線Ｓとを結ぶ直線Ｓ４の延びる方向と一致するようになっている。すなわち、第２突壁部５１もまた、該第２突壁部５１が対応する第２吐出口４６ａを前記羽根部材３５の軸線（所定軸線）Ｓから見た場合に、当該第２吐出口４６ａを非視認状態とするように、その先端５１ｂが周方向へ突出形成されていることになる。   Further, when the straight line S3 connecting the circumferential tip 51b of the second protruding wall portion 51 and the axis S is rotated by a predetermined angle in the B direction (clockwise direction in FIG. 7), the direction in which the straight line S3 extends Is coincident with the extending direction of a straight line S4 connecting the axis S with the end of the second discharge port 46a in the circumferential direction that is far from the guide restricting portion 48. That is, the second protruding wall portion 51 also has the second discharge port 46a when the second discharge port 46a corresponding to the second protruding wall portion 51 is viewed from the axis (predetermined axis) S of the blade member 35. The tip 51b is formed so as to protrude in the circumferential direction so that is not visible.

次に、以上のように構成された本実施形態の食器洗い機１０におけるポンプＰの作用について以下説明する。
始めに、羽根部材３５がＡ方向に回転した場合について説明する。 Next, the operation of the pump P in the dishwasher 10 of the present embodiment configured as described above will be described below.
First, the case where the blade member 35 rotates in the A direction will be described.

まず、モータＭの回転駆動に基づき羽根部材３５がＡ方向に回転すると、吸入部４２内に流入した洗浄水は吸入通路４１内を流動する。すると、吸入部４２は、吸入通路４１の直線通路部４１ａから円弧通路部４１ｂへと洗浄水を通路内面に沿って流動させる。そして、前記円弧通路部４１ｂ内においては、該円弧通路部４１ｂの通路内面に沿って洗浄水を前記羽根部材３５の軸線Ｓを中心に螺旋状に流動させる。また、円弧通路部４１ｂ内を流動方向下流端側まで流動した洗浄水を前記斜面４１ｄに沿わせて前記収容空間３４内に吸入させる。すなわち、羽根部材３５の回転方向の後方側から前方側に向かって下り勾配となる斜め方向から吸入口４２ａを介して洗浄水を収容空間３４内に吸入させる。そのため、羽根部材３５は、Ａ方向に回転する場合、吸入口４２ａを介して収容空間３４内に吸入された洗浄水の勢いを利用しつつ、該洗浄水を流体通路４７内に導くことになる。   First, when the blade member 35 rotates in the A direction based on the rotational drive of the motor M, the wash water that has flowed into the suction portion 42 flows through the suction passage 41. Then, the suction portion 42 causes the cleaning water to flow along the inner surface of the suction passage 41 from the straight passage portion 41a to the arc passage portion 41b. In the arc passage portion 41 b, the cleaning water flows spirally around the axis S of the blade member 35 along the inner surface of the arc passage portion 41 b. Further, the wash water that has flowed through the arc passage portion 41b to the downstream end in the flow direction is sucked into the accommodation space 34 along the inclined surface 41d. That is, the wash water is sucked into the accommodation space 34 through the suction port 42a from an oblique direction with a downward slope from the rear side to the front side in the rotation direction of the blade member 35. Therefore, when the blade member 35 rotates in the A direction, the washing water is guided into the fluid passage 47 while utilizing the momentum of the washing water sucked into the accommodation space 34 through the suction port 42a. .

そして、前記羽根部材３５は、そのＡ方向への回転駆動によって、収容空間３４内に吸入された洗浄水に遠心力を働かせることにより、該洗浄水を羽根部材３５の回転の中心である軸線Ｓから放射する方向に流動させる。すると、前記軸線Ｓから放射する方向に流動した洗浄水の大部分は、流体通路４７内に導かれ、該流体通路４７内を羽根部材３５の回転方向であるＡ方向に沿って流動する。   The blade member 35 is driven to rotate in the direction A, and the centrifugal force is applied to the wash water sucked into the accommodation space 34, whereby the wash water is supplied to the axis S which is the center of rotation of the blade member 35. To flow in the direction of radiation. Then, most of the washing water that flows in the direction radiating from the axis S is guided into the fluid passage 47 and flows in the fluid passage 47 along the direction A which is the rotation direction of the blade member 35.

ここで、前記羽根部材３５のＡ方向への回転駆動によって前記軸線Ｓから放射する方向に流動した洗浄水の一部が下側ポンプハウジング３１の周壁部３１ａに形成された第２吐出口４６ａへ直接流入するということも考えられる。しかし、本実施形態では、前記軸線Ｓから見た際に前記第２吐出口４６ａが見えないように、第２突壁部５１が誘導規制部４８から周方向へ突設されている。そのため、羽根部材３５の回転に基づき前記軸線Ｓから放射する方向に流動した洗浄水が第２吐出口４６ａに直接流入することはなく、流体通路４７内をＡ方向に向けて流動することになる。   Here, a part of the wash water that has flowed in the direction radiating from the axis S by the rotational drive of the blade member 35 in the A direction is directed to the second discharge port 46 a formed in the peripheral wall portion 31 a of the lower pump housing 31. Direct inflow may also be considered. However, in the present embodiment, the second projecting wall portion 51 protrudes from the guide regulating portion 48 in the circumferential direction so that the second discharge port 46a cannot be seen when viewed from the axis S. Therefore, the wash water that flows in the direction radiating from the axis S based on the rotation of the blade member 35 does not flow directly into the second discharge port 46a, but flows in the fluid passage 47 in the A direction. .

そして、前記羽根部材３５のＡ方向への回転に基づき流体通路４７内をＡ方向に流動して第１吐出口４５ａ近傍まで導かれた洗浄水は、その大部分が誘導規制部４８により第２吐出口４６ａ側への流動を規制される。従って、誘導規制部４８によって第２吐出口４６ａ側にさらに流動することが規制された洗浄水は、第１吐出口４５ａ（第１吐出部４５）及び洗浄管路１９を介して洗浄室１２内に吐出（噴射供給）される。   And most of the washing water that flows in the A direction in the fluid passage 47 based on the rotation of the blade member 35 in the A direction and is guided to the vicinity of the first discharge port 45a is secondly guided by the guidance restricting portion 48. The flow to the discharge port 46a side is restricted. Accordingly, the cleaning water that is further restricted to flow toward the second discharge port 46 a by the guide restricting unit 48 is contained in the cleaning chamber 12 through the first discharge port 45 a (first discharge unit 45) and the cleaning pipe line 19. Discharged (injection supply).

一方、第１吐出口４５ａ近傍まで導かれた洗浄水のうち一部の洗浄水は、誘導規制部４８の内面４８ａと羽根部材３５の外周縁３５ａとの間の狭いクリアランス４７ａ内を更にＡ方向に流動して第２吐出口４６ａ側に導かれる。そして、クリアランス４７ａ内を通過し終わった洗浄水は、該クリアランス４７ａの通路断面積よりも大きい通路断面積を有する流体通路４７内に向けて勢い良く流出される。すると、前記第２突壁部５１の先端５１ｂ近傍に形成された第２狭小領域５２においては、前記クリアランス４７ａ内から洗浄水が勢い良く流出されたことに基づき、その雰囲気圧力が第２吐出口４６ａの雰囲気圧力よりも低圧となる。従って、たとえ収容空間３４内の洗浄水の一部が第２吐出口４６ａに至ったとしても、その洗浄水は、雰囲気圧力が第２吐出口４６ａよりも低圧である第２狭小領域５２まで引き戻されることになる。そして、第２狭小領域５２まで引き戻された洗浄水は、前記クリアランス４７ａ内から流体通路４７側に向けて勢い良く放出された洗浄水と共に流体通路４７内に導かれ、再び流体通路４７内をＡ方向に流動することになる。   On the other hand, a part of the cleaning water led to the vicinity of the first discharge port 45a further passes through the narrow clearance 47a between the inner surface 48a of the guide regulating portion 48 and the outer peripheral edge 35a of the blade member 35 in the A direction. And is guided to the second discharge port 46a side. Then, the wash water that has passed through the clearance 47a flows out vigorously toward the fluid passage 47 having a passage sectional area larger than the passage sectional area of the clearance 47a. Then, in the second narrow region 52 formed in the vicinity of the tip 51b of the second projecting wall portion 51, the atmospheric pressure is changed to the second discharge port based on the fact that the cleaning water has flowed out of the clearance 47a. The pressure is lower than the atmospheric pressure of 46a. Therefore, even if a part of the cleaning water in the accommodation space 34 reaches the second discharge port 46a, the cleaning water is drawn back to the second narrow region 52 where the atmospheric pressure is lower than that of the second discharge port 46a. Will be. Then, the cleaning water drawn back to the second narrow region 52 is guided into the fluid passage 47 together with the cleaning water released from the clearance 47a toward the fluid passage 47, and again passes through the fluid passage 47 in the A. Will flow in the direction.

次に、前記羽根部材３５がＢ方向に回転した場合について説明する。
前記モータＭの回転駆動に基づき羽根部材３５がＢ方向に回転すると、吸入部４２内に流入した洗浄水は吸入通路４１内を流動した後、吸入口４２ａを介して収容空間３４内に吸入される。そして、収容空間３４内に吸入された洗浄水は、前記羽根部材３５のＢ方向への回転に基づき前記流体通路４７内をＢ方向に流動し、第２吐出口４６ａ近傍まで導かれる。この際に、前記誘導規制部４８は、第２吐出口４６ａ近傍まで導かれた洗浄水の大部分が誘導規制部４８の内面４８ａと羽根部材３５の外周縁３５ａとの間に形成されたクリアランス４７ａ内を更にＢ方向に流動することを規制する。従って、誘導規制部４８によって第１吐出口４５ａ側にさらに流動することが規制された洗浄水は、第２吐出口４６ａ（第２吐出部４６）及び排水管路２５を介して食器洗い機１０外に吐出（排水）される。 Next, the case where the blade member 35 rotates in the B direction will be described.
When the blade member 35 rotates in the direction B based on the rotational drive of the motor M, the wash water flowing into the suction portion 42 flows through the suction passage 41 and is then sucked into the accommodation space 34 through the suction port 42a. The The washing water sucked into the accommodation space 34 flows in the fluid passage 47 in the B direction based on the rotation of the blade member 35 in the B direction, and is guided to the vicinity of the second discharge port 46a. At this time, the guide restricting portion 48 has a clearance in which most of the washing water guided to the vicinity of the second discharge port 46 a is formed between the inner surface 48 a of the guide restricting portion 48 and the outer peripheral edge 35 a of the blade member 35. The flow in the B direction is further restricted in 47a. Accordingly, the washing water that is further restricted to flow toward the first discharge port 45 a by the guide restricting unit 48 is outside the dishwasher 10 via the second discharge port 46 a (second discharge unit 46) and the drain pipe 25. Discharged (drained).

一方、第２吐出口４６ａ近傍まで導かれた洗浄水のうち一部の洗浄水は、誘導規制部４８によってさらなる流動が規制されずに、前記クリアランス４７ａ内をＢ方向に流動して第１吐出口４５ａ側に導かれる。そして、クリアランス４７ａ内を通過し終わった際には、該クリアランス４７ａの通路断面積よりも大きい通路断面積を有する流体通路４７内に向けて洗浄水が勢い良く流出される。すると、前記第１突壁部４９の先端４９ｂ近傍に形成された第１狭小領域５０においては、前記クリアランス４７ａ内から洗浄水が勢い良く流出されたことに基づき、その雰囲気圧力が第１吐出口４５ａの雰囲気圧力よりも低圧となる。従って、たとえ収容空間３４内の洗浄水の一部が第１吐出口４５ａに至ったとしても、その洗浄水は、雰囲気圧力が第１吐出口４５ａよりも低圧である第１狭小領域５０まで引き戻されることになる。そして、第１狭小領域５０まで引き戻された洗浄水は、前記クリアランス４７ａ内から流体通路４７側に向けて勢い良く放出された洗浄水と共に流体通路４７内に導かれ、再び流体通路４７内をＢ方向に流動することになる。   On the other hand, a part of the cleaning water led to the vicinity of the second discharge port 46a flows in the B direction in the clearance 47a without being restricted by the guidance restricting portion 48, and flows into the first discharge. Guided to the outlet 45a side. Then, when the passage through the clearance 47a is completed, the washing water flows out vigorously toward the fluid passage 47 having a passage sectional area larger than the passage sectional area of the clearance 47a. Then, in the first narrow region 50 formed in the vicinity of the tip 49b of the first protruding wall portion 49, the atmospheric pressure is changed to the first discharge port based on the fact that the cleaning water has flowed out of the clearance 47a. The pressure is lower than the atmospheric pressure of 45a. Therefore, even if a part of the cleaning water in the accommodation space 34 reaches the first discharge port 45a, the cleaning water is drawn back to the first narrow region 50 where the atmospheric pressure is lower than that of the first discharge port 45a. Will be. Then, the wash water drawn back to the first narrow region 50 is guided into the fluid passage 47 together with the wash water released from the clearance 47a toward the fluid passage 47, and again passes through the fluid passage 47 in the fluid passage 47. Will flow in the direction.

ここで、前記羽根部材３５は、そのＢ方向への回転速度がＡ方向への回転速度よりも遅くなるように設定されている。また、前記第１狭小領域５０は、その通路断面積が第２狭小領域５２の通路断面積よりも大きい。そのため、羽根部材３５がＢ方向に回転した場合における第１狭小領域５０と第１吐出口４５ａとの圧力差は、羽根部材３５がＡ方向に回転した場合における第２狭小領域５２と第２吐出口４６ａとの圧力差よりも小さくなる。従って、羽根部材３５がＢ方向に回転した場合、第１吐出口４５ａに至った洗浄水の一部は、第１狭小領域５０側に引き戻されることなく、洗浄管路１９側に導かれる場合もあり得る。しかし、本実施形態では、洗浄管路１９が上下方向に延びているため（図１参照）、前記第１吐出口４５ａから漏れ出た洗浄水が洗浄管路１９を介して洗浄室１２側に吐出されることはほとんどない。   Here, the blade member 35 is set so that the rotational speed in the B direction is slower than the rotational speed in the A direction. The first narrow region 50 has a passage cross-sectional area larger than that of the second narrow region 52. Therefore, the pressure difference between the first narrow region 50 and the first discharge port 45a when the blade member 35 rotates in the B direction is the same as the second narrow region 52 and the second discharge when the blade member 35 rotates in the A direction. It becomes smaller than the pressure difference with the outlet 46a. Therefore, when the blade member 35 rotates in the B direction, a part of the cleaning water that reaches the first discharge port 45a may be guided to the cleaning pipeline 19 side without being drawn back to the first narrow region 50 side. possible. However, in the present embodiment, since the cleaning pipe 19 extends in the vertical direction (see FIG. 1), the cleaning water leaked from the first discharge port 45a passes through the cleaning pipe 19 to the cleaning chamber 12 side. There is almost no discharge.

従って、本実施形態では、以下に示す効果を得ることができる。
（１）第２吐出口４６ａと流体通路４７との間には、第２吐出口４６ａの通路断面積よりも小さい通路断面積を有する第２狭小領域５２が形成されている。そして、羽根部材３５が軸線Ｓを中心にＡ方向に回転した場合、第２狭小領域５２は、その雰囲気圧力が第２吐出口４６ａの雰囲気圧力よりも低圧となる。そのため、羽根部材３５がＡ方向へ回転した際に収容空間３４内の洗浄水（流体）が第２吐出口４６ａまで至ったとしても、その洗浄水は、第２狭小領域５２に確実に引き戻される。従って、２つある吐出口４５ａ，４６ａのうち、第１吐出口（一方の吐出口）４５ａから洗浄水を吐出させる方向（Ａ方向）へ羽根部材３５が回転した場合には、第２吐出口（他方の吐出口）４６ａから洗浄水がポンプＰの外部に吐出されることを確実に規制できる。 Therefore, in this embodiment, the following effects can be obtained.
(1) Between the 2nd discharge port 46a and the fluid channel | path 47, the 2nd narrow area | region 52 which has a channel cross-sectional area smaller than the channel cross-sectional area of the 2nd discharge port 46a is formed. When the blade member 35 rotates in the A direction around the axis S, the atmospheric pressure of the second narrow region 52 is lower than the atmospheric pressure of the second discharge port 46a. Therefore, even if the cleaning water (fluid) in the accommodation space 34 reaches the second discharge port 46 a when the blade member 35 rotates in the A direction, the cleaning water is reliably pulled back to the second narrow region 52. . Accordingly, when the blade member 35 rotates in the direction (direction A) in which the cleaning water is discharged from the first discharge port (one discharge port) 45a among the two discharge ports 45a and 46a, the second discharge port It is possible to reliably restrict the wash water from being discharged to the outside of the pump P from the (other discharge port) 46a.

（２）もし仮に各突壁部４９，５１が下側ポンプハウジング３１の周壁部３１ａから誘導規制部４８に向けて突設されていたとする。すると、羽根部材３５のＡ方向（又はＢ方向）への回転に基づき流体通路４７内をＡ方向（又はＢ方向）に流動して吐出口４５ａ，４６ａ近傍まで導かれた洗浄水（流体）は、突壁部４９，５１が該洗浄水に対して障害物として機能してしまい、ポンプＰ外への速やかな吐出が妨害される可能性がある。しかし、本実施形態の各突壁部４９，５１は、誘導規制部４８から前記周壁部３１ａに向けてそれぞれ突設されているため、羽根部材３５の回転に基づき吐出口４５ａ，４６ａ近傍まで導かれた洗浄水のポンプＰ外への速やかな吐出を妨害することはない。   (2) It is assumed that the protruding wall portions 49 and 51 protrude from the peripheral wall portion 31a of the lower pump housing 31 toward the guidance restricting portion 48. Then, the washing water (fluid) guided in the direction A (or B direction) in the fluid passage 47 based on the rotation of the blade member 35 in the A direction (or B direction) and guided to the vicinity of the discharge ports 45a and 46a. The protruding wall portions 49 and 51 may function as an obstacle to the cleaning water, and there is a possibility that the rapid discharge to the outside of the pump P may be hindered. However, since each of the projecting wall portions 49 and 51 of the present embodiment protrudes from the guidance restricting portion 48 toward the peripheral wall portion 31a, the projecting wall portions 49 and 51 are guided to the vicinity of the discharge ports 45a and 46a based on the rotation of the blade member 35. There is no impediment to prompt discharge of the washed water out of the pump P.

（３）各突壁部４９，５１は、羽根部材３５の軸線（所定軸線）Ｓから見た場合、各吐出口４５ａ，４６ａが見えないように形成されている。そのため、羽根部材３５の回転に基づき軸線（所定軸線）Ｓから放射する方向へ流動する洗浄水（流体）が流体通路４７内を流動することなく各吐出口４５ａ，４６ａに直接流入してしまうことを確実に抑制できる。   (3) When viewed from the axis (predetermined axis) S of the blade member 35, the protruding walls 49 and 51 are formed so that the discharge ports 45a and 46a cannot be seen. Therefore, the washing water (fluid) that flows in the direction radiating from the axis (predetermined axis) S based on the rotation of the blade member 35 flows directly into the discharge ports 45a and 46a without flowing in the fluid passage 47. Can be reliably suppressed.

（４）もし仮に誘導規制部４８の内面４８ａと羽根部材３５の外周縁３５ａとの間の隙間よりも各突壁部４９，５１の内面４９ａ，５１ａと羽根部材３５の外周縁３５ａとの間の隙間の方が広くなるように各突壁部４９，５１を形成したとする。すると、本実施形態の場合に比して、羽根部材３５の回転に基づき流体通路４７内を吐出口４５ａ，４６ａ側まで導かれた洗浄水（流体）のうちクリアランス４７ａ側に導かれる洗浄水の量が増加することになる。しかし、本実施形態では、各突壁部４９，５１の内面４９ａ，５１ａが誘導規制部４８の円弧面状をなす内面４８ａの延長方向に沿うように形成されているため、羽根部材３５の回転に基づき流体通路４７内を流動した洗浄水がクリアランス４７ａ側に導かれることを極力回避でき、効率良く収容空間３４内の洗浄水をポンプＰの外部に吐出できる。   (4) If the gap between the inner surface 48a of the guide restricting portion 48 and the outer peripheral edge 35a of the blade member 35 is not between the inner surfaces 49a, 51a of the projecting wall portions 49, 51 and the outer peripheral edge 35a of the blade member 35, It is assumed that the protruding wall portions 49 and 51 are formed so that the gap is wider. Then, as compared with the case of the present embodiment, the cleaning water guided to the clearance 47a side out of the cleaning water (fluid) guided to the discharge ports 45a and 46a through the fluid passage 47 based on the rotation of the blade member 35. The amount will increase. However, in the present embodiment, the inner surfaces 49a, 51a of the respective projecting wall portions 49, 51 are formed so as to extend along the extending direction of the inner surface 48a forming the arcuate surface shape of the guidance restricting portion 48. Therefore, it is possible to avoid as much as possible that the cleaning water flowing in the fluid passage 47 is guided to the clearance 47a side, and the cleaning water in the accommodation space 34 can be efficiently discharged to the outside of the pump P.

（５）羽根部材３５は、Ａ方向に回転する場合、吸入部４２内の斜面（ガイド手段）４１ｄにガイドされて収容空間３４内に吸入された洗浄水（流体）の勢いを利用することができる。すなわち、従来のように羽根部材３５の回転の中心である軸線（所定軸線）Ｓの軸方向に沿う方向から洗浄水を吸入する場合に比して、羽根部材３５にかかる負担を低減させつつ、吸入した洗浄水を流体通路４７内でＡ方向に流動させることができる。従って、羽根部材３５の回転効率を低下させることなく、吸入口４２ａを介して洗浄水を収容空間３４内に吸入させ、また、吸入された洗浄水を各吐出口４５ａ，４６ａから効率良くポンプＰ外へ吐出することができる。   (5) When the blade member 35 rotates in the A direction, it is possible to use the momentum of the cleaning water (fluid) guided by the inclined surface (guide means) 41 d in the suction portion 42 and sucked into the accommodation space 34. it can. That is, while reducing the burden on the blade member 35 as compared to the case where the washing water is sucked from the direction along the axial direction of the axis (predetermined axis) S that is the center of rotation of the blade member 35 as in the past, The sucked cleaning water can flow in the direction A in the fluid passage 47. Accordingly, the cleaning water is sucked into the accommodation space 34 through the suction port 42a without reducing the rotation efficiency of the blade member 35, and the sucked cleaning water is efficiently pumped from the discharge ports 45a and 46a. It can be discharged outside.

（６）吸入部４２内の洗浄水（流体）を収容空間３４内にガイドするためのガイド手段（斜面４１ｄ）を、吸入部４２内に形成された吸入通路４１（円弧通路部４１ｂ）の下流端における通路内面を収容空間３４側に向けて傾斜させるという非常に簡単な構成で実現することができる。   (6) Guide means (slope 41d) for guiding the cleaning water (fluid) in the suction portion 42 into the accommodation space 34 is provided downstream of the suction passage 41 (arc passage portion 41b) formed in the suction portion 42. This can be realized with a very simple configuration in which the inner surface of the passage at the end is inclined toward the accommodation space 34 side.

（７）吸入通路４１のうち円弧通路部４１ｂは、羽根部材３５の回転方向のうちＡ方向に対応するように、羽根部材３５の軸線Ｓを取り巻くように形成されている。そのため、吸入部４２内の洗浄水（流体）は、羽根部材３５の回転方向（Ａ方向）に沿うように収容空間３４内に吸入されることになる。従って、羽根部材３５は、その回転方向に沿うように吸入口４２ａを介して収容空間３４内に吸入された洗浄水（流体）をより効率良くポンプＰの外部に吐出させることができる。   (7) The arc passage portion 41 b of the suction passage 41 is formed so as to surround the axis S of the blade member 35 so as to correspond to the A direction in the rotation direction of the blade member 35. Therefore, the cleaning water (fluid) in the suction part 42 is sucked into the accommodation space 34 along the rotation direction (A direction) of the blade member 35. Therefore, the blade member 35 can discharge the cleaning water (fluid) sucked into the accommodation space 34 through the suction port 42a along the rotation direction more efficiently to the outside of the pump P.

なお、本実施形態は以下のような別の実施形態（別例）に変更してもよい。
・前記実施形態において、第１突壁部４９は、その先端４９ｂと羽根部材３５の回転の中心となる軸線Ｓとを結ぶ直線Ｓ１の延びる方向が前記直線Ｓ２の延びる方向と一致するように形成されたものであってもよい。同様に、第２突壁部５１は、その先端５１ｂと前記軸線Ｓとを結ぶ直線Ｓ３の延びる方向が直線Ｓ４の延びる方向と一致するように形成されたものであってもよい。 The present embodiment may be changed to another embodiment (another example) as follows.
In the embodiment, the first protruding wall portion 49 is formed so that the extending direction of the straight line S1 connecting the tip 49b and the axis S that is the center of rotation of the blade member 35 coincides with the extending direction of the straight line S2. It may be what was done. Similarly, the second protruding wall portion 51 may be formed such that the extending direction of the straight line S3 connecting the tip 51b and the axis S coincides with the extending direction of the straight line S4.

・前記実施形態において、第２突壁部５１は、図８に示すように、その内面５１ａが誘導規制部４８の内面４８ａよりも羽根部材３５の径方向外側となるように突設されたものであってもよい。同様に、第１突壁部４９もまた、その内面４９ａが誘導規制部４８の内面４８ａよりも羽根部材３５の径方向外側となるように突設されたものであってもよい。   -In the said embodiment, as shown in FIG. 8, the 2nd protrusion wall part 51 protruded so that the inner surface 51a might become the radial direction outer side of the blade member 35 rather than the inner surface 48a of the guidance control part 48. It may be. Similarly, the first projecting wall portion 49 may also be provided so that its inner surface 49a is positioned on the radially outer side of the blade member 35 with respect to the inner surface 48a of the guide regulating portion 48.

・前記実施形態において、各突壁部４９，５１は、流体通路４７と吐出口４５ａ，４６ａとの間に狭小領域５０，５２を形成できる構成であれば、羽根部材３５の外周縁３５ａに沿った形状のものでなくてもよい。   In the above-described embodiment, the protruding wall portions 49 and 51 are configured along the outer peripheral edge 35a of the blade member 35 as long as the narrow regions 50 and 52 can be formed between the fluid passage 47 and the discharge ports 45a and 46a. It does not have to be of a different shape.

・前記実施形態において、第２突壁部５１は、図９に示すように、周壁部３１ａから誘導規制部４８側に向けて突設されたものであってもよい。同様に、第１突壁部４９もまた、周壁部３１ａから誘導規制部４８側に向けて突設されたものであってもよい。   -In the said embodiment, as shown in FIG. 9, the 2nd protrusion wall part 51 may protrude from the surrounding wall part 31a toward the guidance control part 48 side. Similarly, the first projecting wall portion 49 may also be provided so as to project from the peripheral wall portion 31a toward the guidance restricting portion 48 side.

・前記実施形態において、吸入部４２は、図１０に示すように、その吸入口４２ａがモータＭのシャフト２８を径方向から取り囲むように構成されてなくてもよい。すなわち、リングプレート３０に、吸入口４２ａとシャフト２８が挿通する挿通孔６０とをそれぞれ形成するようにしてもよい。   In the embodiment described above, the suction portion 42 may not be configured such that the suction port 42a surrounds the shaft 28 of the motor M from the radial direction, as shown in FIG. That is, the inlet 42a and the insertion hole 60 through which the shaft 28 is inserted may be formed in the ring plate 30, respectively.

・前記実施形態において、吸入部４２は、図１１に示すように、シャフト２８の軸方向（上下方向）において、収容空間３４の設けられる軸方向位置と同じ軸方向位置に設けられてもよい。この場合、収容空間３４内には、羽根部材３５の側方から（つまり、軸方向と直交する方向から）洗浄水が吸入されることになる。   In the above-described embodiment, as illustrated in FIG. 11, the suction portion 42 may be provided at the same axial position as the axial position where the accommodation space 34 is provided in the axial direction (vertical direction) of the shaft 28. In this case, the cleaning water is sucked into the accommodation space 34 from the side of the blade member 35 (that is, from the direction orthogonal to the axial direction).

・前記実施形態において、吸入通路は、図１２に示すように、吸水管路２４に連結された吸入用配管６１であってもよい。この吸入用配管６１は、ボス３９（及び軸線Ｓ）を取り巻くように螺旋状に形成されており、その先端部（吸入口）６１ａから洗浄水が収容空間３４内に吸入されることになる。このように構成した場合、吸入用配管６１が吸入部として機能し、該吸入用配管６１の螺旋状をなす通路内面がガイド手段を構成することになる。   In the above embodiment, the suction passage may be a suction pipe 61 connected to the water suction pipe 24 as shown in FIG. The suction pipe 61 is formed in a spiral shape so as to surround the boss 39 (and the axis S), and the cleaning water is sucked into the accommodation space 34 from the tip end (suction port) 61a. In such a configuration, the suction pipe 61 functions as a suction portion, and the inner surface of the passage that forms the spiral shape of the suction pipe 61 constitutes the guide means.

次に、上記実施形態及び別例から把握できる技術的思想について以下に追記する。
（イ）前記ガイド手段は、前記吸入口を介した前記流体の前記収容空間内への流入方向が前記吐出口の設けられた方向を指向するように設けられている請求項１〜請求項４のうち何れか一項に記載のポンプ。 Next, the technical idea that can be grasped from the above embodiment and other examples will be described below.
(A) The guide means is provided such that an inflow direction of the fluid into the accommodation space through the suction port is directed in a direction in which the discharge port is provided. The pump according to any one of the above.

本実施形態における食器洗い機の概略縦断面図。The schematic longitudinal cross-sectional view of the dishwasher in this embodiment. 本実施形態におけるポンプの一部断面図。The partial sectional view of the pump in this embodiment. 図２における３−３線矢視断面図。FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. 2. 本実施形態における上側ポンプハウジングの底面図。The bottom view of the upper pump housing in this embodiment. 図４における５−５線矢視断面図。FIG. 5 is a cross-sectional view taken along line 5-5 in FIG. 図４における６−６線矢視断面図。FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 本実施形態における下側ポンプハウジングの平面図。The top view of the lower side pump housing in this embodiment. 別例の第２突壁部の構成を説明する一部拡大図。The partially expanded view explaining the structure of the 2nd protrusion wall part of another example. 他の別例の第２突壁部の構成を説明する一部拡大図。The partially expanded view explaining the structure of the 2nd protrusion wall part of another example. 別例のポンプを示す一部断面図。The partial cross section figure which shows the pump of another example. 他の別例のポンプ内に形成された収容空間内の様子を示す平面図。The top view which shows the mode in the accommodation space formed in the pump of another example. 更なる別例のポンプを示す一部断面斜視図。The partial cross section perspective view which shows the pump of the further another example.

符号の説明Explanation of symbols

１０…食器洗い機、２９…上側ポンプハウジング、３０…リングプレート、３０ａ…内周縁（吸入口）、３１…下側ポンプハウジング、３１ａ…周壁部、３４…収容空間、３５…羽根部材、３５ａ…外周縁、３８…羽根部、３９ａ…外周縁（吸入口）、４１…吸入通路、４１ａ…直線通路部、４１ｂ…円弧通路部、４１ｄ…斜面（ガイド手段）、４２…吸入部、４２ａ…吸入口、４３…羽根部材の回転平面、４５…第１吐出部、４５ａ…第１吐出口、４５ｂ…連結部、４６…第２吐出部、４６ａ…第２吐出口、４６ｂ…連結部、４７…流体通路、４７ａ…クリアランス、４８…誘導規制部、４８ａ…内面、４９…第１突壁部、４９ａ…内面、５０…第１狭小領域、５１…第２突壁部、５１ａ…内面、５２…第２狭小領域、６１…吸入用配管（吸入通路、吸入部）、６１ａ…先端部（吸入口）、Ｐ…ポンプ、Ｓ…軸線（所定軸線）。   DESCRIPTION OF SYMBOLS 10 ... Dishwasher, 29 ... Upper pump housing, 30 ... Ring plate, 30a ... Inner peripheral edge (suction port), 31 ... Lower pump housing, 31a ... Peripheral wall part, 34 ... Storage space, 35 ... Blade member, 35a ... Outside Periphery, 38 ... blade part, 39a ... outer peripheral edge (suction port), 41 ... suction passage, 41a ... straight passage part, 41b ... arc passage part, 41d ... slope (guide means), 42 ... suction part, 42a ... suction port , 43 ... Rotation plane of the blade member, 45 ... First discharge part, 45a ... First discharge port, 45b ... Connection part, 46 ... Second discharge part, 46a ... Second discharge port, 46b ... Connection part, 47 ... Fluid Passage, 47a ... Clearance, 48 ... Guidance restricting portion, 48a ... Inner surface, 49 ... First projection wall portion, 49a ... Inner surface, 50 ... First narrow region, 51 ... Second projection wall portion, 51a ... Inner surface, 52 ... First 2 narrow area, 61 ... piping for suction ( Entry passage, the suction portion), 61a ... front end portion (intake port), P ... pumps, S ... axis (predetermined axis).

Claims (4)

ポンプハウジング内の収容空間に所定軸線を中心に回転可能な羽根部材が収容され、前記ポンプハウジングには、前記羽根部材の回転に基づき前記ポンプハウジング外から前記収容空間内に流体を吸入するための吸入口を有する吸入部と、前記羽根部材の回転に基づき前記収容空間内の流体を前記ポンプハウジング外に吐出するための吐出口を有する吐出部とが設けられ、前記吸入部内にポンプハウジング外から流入した流体を前記羽根部材の回転平面と交差する方向から前記吸入口を介して前記収容空間内に吸入させるポンプにおいて、
前記吸入部内には、前記流体を前記羽根部材の回転平面に対して該羽根部材の回転方向の後方側から前方側に向かって下り勾配となる斜め方向から前記吸入口を介して前記収容空間内に吸入させるためのガイド手段が設けられたポンプ。 A vane member that is rotatable about a predetermined axis is accommodated in an accommodation space in the pump housing, and the pump housing is configured to suck fluid from outside the pump housing into the accommodation space based on the rotation of the vane member. A suction portion having a suction port, and a discharge portion having a discharge port for discharging the fluid in the accommodation space to the outside of the pump housing based on the rotation of the blade member, are provided in the suction portion from the outside of the pump housing. In the pump for sucking inflowed fluid into the accommodation space from the direction intersecting the rotation plane of the blade member through the suction port,
In the suction portion, the fluid is introduced into the accommodation space through the suction port from an oblique direction in which the fluid is inclined downward from the rear side in the rotation direction of the blade member toward the front side with respect to the rotation plane of the blade member. A pump provided with guide means for inhaling. 前記吸入部は、該吸入部の下流端に設けられる前記吸入口と、該吸入口の上流側から前記吸入口まで前記流体を導くための吸入通路とを含んで構成されており、前記ガイド手段は、前記吸入通路を形成する通路内面のうち前記収容空間内に向けて斜状をなす斜面にて構成されている請求項１に記載のポンプ。 The suction portion includes the suction port provided at the downstream end of the suction portion, and a suction passage for guiding the fluid from the upstream side of the suction port to the suction port, and the guide means 2. The pump according to claim 1, wherein the pump is configured by an inclined surface that is inclined toward the inside of the accommodation space, of the inner surface of the passage that forms the suction passage. 前記吸入通路における前記斜面が形成された通路部分は、前記所定軸線を取り巻くように形成されている請求項２に記載のポンプ。 3. The pump according to claim 2, wherein a passage portion in which the inclined surface is formed in the suction passage is formed so as to surround the predetermined axis. 前記吸入部は、該吸入部の下流端に設けられる前記吸入口と、該吸入口の上流側から前記吸入口まで前記流体を導くための吸入通路とを含んで構成されており、前記ガイド手段は、前記所定軸線を取り巻くように螺旋状に形成された吸入通路の通路内面により構成されている請求項１に記載のポンプ。 The suction portion includes the suction port provided at the downstream end of the suction portion, and a suction passage for guiding the fluid from the upstream side of the suction port to the suction port, and the guide means The pump according to claim 1, wherein the pump is constituted by a passage inner surface of a suction passage formed in a spiral shape so as to surround the predetermined axis.
JP2004374365A 2004-12-24 2004-12-24 Pump Pending JP2006177330A (en)

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US10234065B2 (en) 2015-10-27 2019-03-19 Whirlpool Corporation Collet securing device for joining two fluid lines and providing lateral support at the connection of the two fluid lines
US10480117B2 (en) 2017-02-27 2019-11-19 Whirlpool Corporation Self cleaning sump cover
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US10634412B2 (en) 2017-04-10 2020-04-28 Whirlpool Corporation Concealed upstream air tower guide vanes
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US10234065B2 (en) 2015-10-27 2019-03-19 Whirlpool Corporation Collet securing device for joining two fluid lines and providing lateral support at the connection of the two fluid lines
US10557469B2 (en) 2016-03-22 2020-02-11 Whirlpool Corporation Multi-outlet fluid flow system for an appliance incorporating a bi-directional motor
EP3222853A3 (en) * 2016-03-22 2018-01-10 Whirlpool Corporation Multi-outlet fluid flow system for an appliance incorporating a bi-directional motor
US10655266B2 (en) 2016-11-30 2020-05-19 Whirlpool Corporation Lint processing fluid pump for a laundry appliance
US10619289B2 (en) 2017-02-27 2020-04-14 Whirlpool Corporation Self cleaning diverter valve
US10480117B2 (en) 2017-02-27 2019-11-19 Whirlpool Corporation Self cleaning sump cover
US10662574B2 (en) 2017-02-27 2020-05-26 Whirlpool Corporation Self cleaning heater exchanger plate
US11035073B2 (en) 2017-02-27 2021-06-15 Whirlpool Corporation Self cleaning sump cover
US11603615B2 (en) 2017-02-27 2023-03-14 Whirlpool Corporation Self cleaning sump cover
US11802360B2 (en) 2017-02-27 2023-10-31 Whirlpool Corporation Self cleaning sump cover
US10634412B2 (en) 2017-04-10 2020-04-28 Whirlpool Corporation Concealed upstream air tower guide vanes
US10697700B2 (en) 2018-01-17 2020-06-30 Whirlpool Corporation Refrigeration water dispensing system
US11592232B2 (en) 2018-01-17 2023-02-28 Whirlpool Corporation Refrigeration water dispensing system

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