JP7485388B2 - Drainage pump - Google Patents

Drainage pump Download PDF

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Publication number
JP7485388B2
JP7485388B2 JP2022099108A JP2022099108A JP7485388B2 JP 7485388 B2 JP7485388 B2 JP 7485388B2 JP 2022099108 A JP2022099108 A JP 2022099108A JP 2022099108 A JP2022099108 A JP 2022099108A JP 7485388 B2 JP7485388 B2 JP 7485388B2
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motor
wall surface
opening
pump
space
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JP2024000362A (en
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友也 東家
良樹 渡邉
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Fujikoki Corp
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Fujikoki Corp
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Priority to JP2022099108A priority Critical patent/JP7485388B2/en
Priority to CN202310582505.2A priority patent/CN117267137A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00Pumping installations or systems
    • F04D13/02Units comprising pumps and their driving means
    • F04D13/06Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606Canned motor 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
    • F04D29/426Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid 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
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps

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

Description

本発明は、水を吸い上げて吐出する排水ポンプに関する。 The present invention relates to a drainage pump that sucks up and discharges water.

例えば、建物の天井に取り付けられる空気調和機の室内ユニットは、運転時に生じるドレン水をドレンパンに溜め、その水を排水ポンプで吸い上げて室外へ向けて吐出するようにしている。 For example, the indoor unit of an air conditioner that is attached to the ceiling of a building collects drain water generated during operation in a drain pan, and then uses a drainage pump to suck up the water and discharge it outside.

下記の特許文献1には、この種の排水ポンプの一例が開示されている。この排水ポンプは、吸込口、吐出口及びそれらに連通するポンプ室を有するポンプ本体と、ポンプ室内に配設される回転羽根と、回転羽根を回転させるモータと、ポンプ本体の上部に固着されるとともにモータを支持するモータ受け部材とを備えている。 An example of this type of drainage pump is disclosed in the following Patent Document 1. This drainage pump is equipped with a pump body having a suction port, a discharge port, and a pump chamber communicating with them, a rotor blade disposed in the pump chamber, a motor for rotating the rotor blade, and a motor support member fixed to the top of the pump body and supporting the motor.

特開2008-291780号公報JP 2008-291780 A

上述した排水ポンプにあっては、ポンプ室内で発生する騒音、具体的には回転羽根が水をかき回す際の水掻き音が、筒状のモータ受け部材の内部に進入し、モータ受け部材の内部に進入した騒音が、モータ受け部材の壁面を透過して外部に伝達される。 In the drainage pump described above, noise generated within the pump chamber, specifically the paddling noise caused by the rotating blades stirring the water, enters the inside of the cylindrical motor receiving member, and the noise that enters the inside of the motor receiving member passes through the wall of the motor receiving member and is transmitted to the outside.

本発明の目的は、モータ受け部材の壁面を透過する騒音を減らすことができる排水ポンプを提供することにある。 The object of the present invention is to provide a drainage pump that can reduce noise transmitted through the wall surface of the motor receiving member.

請求項1に記載の排水ポンプは、吸込口、吐出口、及び前記吸込口と前記吐出口とに連通し上部が開口したポンプ室を備えたポンプ本体と、前記ポンプ室内に配置された回転羽根と、前記回転羽根を回転させるモータと、前記ポンプ本体の上部に配置され前記ポンプ本体の開口を覆い前記モータの回転駆動力を前記回転羽根に伝達する回転力伝達部材が貫通する開口部が形成された蓋部、及び前記蓋部の上面に設けられ前記モータを上部に支持する筒状部を備えると共に、前記筒状部に内外を連通する排水路が形成されたモータ受け部材と、を備え、前記筒状部は、径方向内側の内壁面と径方向外側の外壁面とを有し、前記内壁面と前記外壁面との間には閉空間が設けられている。 The drainage pump according to claim 1 comprises a pump body having a suction port, a discharge port, and a pump chamber communicating with the suction port and the discharge port and having an open top, a rotor blade disposed in the pump chamber, a motor for rotating the rotor blade, a lid disposed on the top of the pump body, covering the opening of the pump body, and having an opening through which a torque transmission member for transmitting the rotational driving force of the motor to the rotor blade passes, and a motor support member provided on the upper surface of the lid and supporting the motor at the top, and having a drainage channel formed to communicate the inside and outside of the cylindrical part, the cylindrical part having a radially inner inner wall surface and a radially outer outer wall surface, and a closed space is provided between the inner wall surface and the outer wall surface.

請求項1に記載の排水ポンプでは、ポンプ室内に配置された回転羽根をモータで回転させることで、吸込口から吸い込んだ排水を吐出口から排出することができる。 In the drainage pump described in claim 1, the drainage water sucked in through the suction port can be discharged from the discharge port by rotating the rotating blades arranged in the pump chamber with a motor.

回転羽根がポンプ室内で回転するとポンプ室内で水をかき回す音、即ち、騒音が発生する。ポンプ室内で発生した騒音は、モータ受け部材の蓋に形成された開口部を介してモータ受け部材の筒状部内に進入する。 When the rotor blades rotate inside the pump chamber, the sound of stirring the water inside the pump chamber is generated. The noise generated inside the pump chamber enters the cylindrical portion of the motor receiving member through an opening formed in the lid of the motor receiving member.

筒状部内に進入した騒音は、一部が排水路を介して筒状部の外部へ伝達され、他の一部が、筒状部を透過して外部へ伝達される。 Part of the noise that enters the cylindrical section is transmitted to the outside of the cylindrical section via the drainage channel, and the other part passes through the cylindrical section and is transmitted to the outside.

請求項1の排水ポンプでは、筒状部が径方向内側の内壁面と径方向外側の外壁面とを有しており、内壁面と前記外壁面との間に閉空間が設けられているため、筒状部が単一の壁面で形成されている場合に比較して、筒状部を透過する騒音を減らすことができる。 In the drainage pump of claim 1, the cylindrical portion has an inner wall surface on the radial inside and an outer wall surface on the radial outside, and a closed space is provided between the inner wall surface and the outer wall surface, so that noise transmitted through the cylindrical portion can be reduced compared to when the cylindrical portion is formed by a single wall surface.

請求項2に記載の発明は、請求項1に記載の排水ポンプにおいて、前記筒状部は、前記内壁面と前記外壁面との間に上部が開口された空間を備え、前記閉空間は、前記空間の開口が前記モータで塞がれて形成されている。 The invention described in claim 2 is the drainage pump described in claim 1, in which the cylindrical portion has a space between the inner wall surface and the outer wall surface that is open at the top, and the closed space is formed by blocking the opening of the space with the motor.

請求項2に記載の排水ポンプは、筒状部は、内壁面と外壁面との間に上部が開口された空間を備えており、該空間の開口をモータで塞ぐことで閉空間としている。 In the drainage pump described in claim 2, the cylindrical portion has a space between the inner wall surface and the outer wall surface that is open at the top, and the opening of the space is closed by closing it with the motor to form a closed space.

請求項3に記載の排水ポンプは、請求項2に記載の排水ポンプにおいて、前記内壁面を構成する内筒と、前記外壁面を構成し、前記内筒よりも高く形成された外筒と、を備え、前記外筒に挿入された前記モータが前記内筒の上端に載置されて前記開口が塞がれている。 The drainage pump described in claim 3 is the drainage pump described in claim 2, which includes an inner cylinder that forms the inner wall surface, and an outer cylinder that forms the outer wall surface and is formed higher than the inner cylinder, and the motor inserted into the outer cylinder is placed on the upper end of the inner cylinder to close the opening.

請求項3に記載の排水ポンプでは、外筒が内筒よりも高く形成されており、モータを外筒に挿入し、モータを内筒の上端に載置することで、内筒の上端と外筒との間の開口を塞ぎ、外筒と内筒との間の空間を閉空間にすることができる。 In the drainage pump described in claim 3, the outer cylinder is formed higher than the inner cylinder, and by inserting the motor into the outer cylinder and placing the motor on the upper end of the inner cylinder, the opening between the upper end of the inner cylinder and the outer cylinder can be blocked, and the space between the outer cylinder and the inner cylinder can be made into a closed space.

請求項4に記載の発明は、請求項2または請求項3に記載の排水ポンプにおいて、前記空間には、遮音材が充填されている。 The invention described in claim 4 is the drainage pump described in claim 2 or claim 3, in which the space is filled with soundproofing material.

請求項4に記載の排水ポンプの筒状部は、空間に遮音材が充填されているので、空間に遮音材が充填されていない筒状部に比較して、騒音が透過し難くなる。 The cylindrical portion of the drainage pump described in claim 4 has a space filled with sound-proofing material, so noise is less likely to pass through compared to a cylindrical portion in which the space is not filled with sound-proofing material.

本発明の排水ポンプは、モータ受け部材の壁面を透過する騒音を減らすことができる。 The drainage pump of the present invention can reduce noise transmitted through the wall surface of the motor receiving member.

(A)は本発明の第1の実施形態に係る排水ポンプを示す正面図であり、(B)は図1(A)に示す排水ポンプを示す平面図である。1A is a front view showing a drainage pump according to a first embodiment of the present invention, and FIG. 1B is a plan view showing the drainage pump shown in FIG. 1A. FIG. 排水ポンプを示す軸線に沿った縦断面図である。FIG. 2 is a longitudinal sectional view showing the drainage pump along its axis. モールドモータとモータ受け部材とを固定する構成を示す説明図である。11 is an explanatory diagram showing a configuration for fixing a molded motor and a motor receiving member. FIG. 排水ポンプの水平断面図(図2の4-4線断面図)である。4 is a horizontal cross-sectional view of the drainage pump (cross-sectional view taken along line 4-4 in FIG. 2). 図3の要部を示す拡大図である。FIG. 4 is an enlarged view showing a main part of FIG. 3 . 筒部材の一部を示す縦断面図(図4の6-6線断面図)である。6 is a vertical cross-sectional view (cross-sectional view taken along line 6-6 in FIG. 4) showing a portion of the tubular member. 比較例に係る排水ポンプを示す水平断面図である。FIG. 4 is a horizontal cross-sectional view showing a drainage pump according to a comparative example. 本発明の第2の実施形態に係る排水ポンプを示す水平断面図である。FIG. 5 is a horizontal cross-sectional view showing a drainage pump according to a second embodiment of the present invention.

[第1の実施形態]
図1、2に示すように、排水ポンプ1は、合成樹脂製のポンプ本体10を備えており、ポンプ本体10は、下方に突出する吸込口12と、水平方向に突出する吐出口16と、吸込口12及び吐出口16に連通するポンプ室14とを有する。
[First embodiment]
As shown in Figures 1 and 2, the drainage pump 1 has a pump body 10 made of synthetic resin. The pump body 10 has a suction port 12 that protrudes downward, a discharge port 16 that protrudes horizontally, and a pump chamber 14 that communicates with the suction port 12 and the discharge port 16.

ポンプ室14内には回転羽根20が配設される。回転羽根20は、回転力伝達部材の一例としての取付軸21と、取付軸21から径方向に延びる複数の大径羽根(図示せず)と、各大径羽根から下方に向けて軸方向に延びる複数の小径羽根22と、複数の大径羽根の下縁部を連結するとともに中心に開口部を有する円盤23と、複数の大径羽根の外周部を連結するリング24とを備える。取付軸21の中心に形成した取付穴(図示省略)に後述するモールドモータ100の出力軸110が圧入される。モールドモータ100を駆動すると、回転羽根20がポンプ室14内で回転する。モールドモータ100は、本発明のモータの一例である。 A rotating blade 20 is disposed in the pump chamber 14. The rotating blade 20 includes a mounting shaft 21 as an example of a rotational force transmission member, a plurality of large diameter blades (not shown) extending radially from the mounting shaft 21, a plurality of small diameter blades 22 extending axially downward from each large diameter blade, a disk 23 connecting the lower edges of the plurality of large diameter blades and having an opening in the center, and a ring 24 connecting the outer peripheries of the plurality of large diameter blades. An output shaft 110 of a molded motor 100 described later is press-fitted into a mounting hole (not shown) formed in the center of the mounting shaft 21. When the molded motor 100 is driven, the rotating blade 20 rotates in the pump chamber 14. The molded motor 100 is an example of a motor of the present invention.

ポンプ本体10の上面は開口していて、この開口を覆うように合成樹脂製のモータ受け部材50が取り付けられている。モータ受け部材50は、ポンプ本体10に一体成形された一対のフック状の取付部80によりポンプ本体10に結合されている。モータ受け部材50は、ポンプ本体10の開口部を覆う蓋部52を有し、この蓋部52とポンプ本体10との間にはOリング40が配設されている。 The top surface of the pump body 10 is open, and a motor receiving member 50 made of synthetic resin is attached to cover this opening. The motor receiving member 50 is connected to the pump body 10 by a pair of hook-shaped mounting parts 80 that are integrally molded with the pump body 10. The motor receiving member 50 has a lid part 52 that covers the opening of the pump body 10, and an O-ring 40 is disposed between the lid part 52 and the pump body 10.

蓋部52は、回転羽根20の取付軸21が貫通する開口部54を中央部に有している。取付軸21と開口部54との間には環状の隙間Gが設けられている。排水ポンプ1の停止時には、排水の一部が逆流してポンプ室14、及び該隙間Gを介して上方のモータ受け部材50側へ噴出する場合があるが、取付軸21と出力軸110との間に取り付けられた水切り30により、隙間Gから噴出した排水がモールドモータ100側へ飛散するのが防止される。なお、モータ受け部材50内に進入した水は、後述する排水路68を介してモータ受け部材50の外部に排出される。 The cover 52 has an opening 54 in the center through which the mounting shaft 21 of the rotor blade 20 passes. An annular gap G is provided between the mounting shaft 21 and the opening 54. When the drainage pump 1 is stopped, some of the drainage water may flow back and spurt out into the pump chamber 14 and the motor support member 50 above through the gap G. However, the drain 30 attached between the mounting shaft 21 and the output shaft 110 prevents the drainage water spurting out from the gap G from splashing toward the molded motor 100. Water that enters the motor support member 50 is discharged to the outside of the motor support member 50 through the drainage channel 68 described below.

蓋部52の上部には、内筒56と、内筒56の径方向外側に間隔を開けて配置される外筒58とを含んで構成された二重管構造の筒状部60が一体的に形成されている。なお、この内筒56は筒状部60の内壁面を構成し、外筒58は筒状部60の外壁面を構成する。 A cylindrical section 60 having a double-tube structure is integrally formed on the upper part of the lid section 52. The cylindrical section 60 includes an inner tube 56 and an outer tube 58 that is spaced apart radially outward from the inner tube 56. The inner tube 56 constitutes the inner wall surface of the cylindrical section 60, and the outer tube 58 constitutes the outer wall surface of the cylindrical section 60.

本実施形態の筒状部60は、外筒58よりも内筒56が低く形成されており、図3に示すように、モールドモータ100が外筒58に挿入され、図2に示すように、外筒58に挿入されたモールドモータ100は内筒56の上端に搭載されて支持されている。 In this embodiment, the cylindrical portion 60 is formed such that the inner cylinder 56 is lower than the outer cylinder 58, and as shown in FIG. 3, the molded motor 100 is inserted into the outer cylinder 58, and as shown in FIG. 2, the molded motor 100 inserted into the outer cylinder 58 is mounted and supported on the upper end of the inner cylinder 56.

図4に示すように、内筒56には、一対のスリット状の開口62が形成されている。外筒58には、内筒56の開口62と対向する位置から周方向に離間した位置に、一対の開口64が形成されている。 As shown in FIG. 4, the inner tube 56 is formed with a pair of slit-shaped openings 62. The outer tube 58 is formed with a pair of openings 64 at positions circumferentially spaced apart from positions facing the openings 62 of the inner tube 56.

開口64の周方向一端側の外筒端部と、内筒56の外周面とは、隔壁66で一体的に繋がっており、該外筒端部と内筒56との間の円弧状の空間Sは、周方向の両端部が隔壁66で塞がれている。 The outer tube end at one circumferential end of the opening 64 and the outer circumferential surface of the inner tube 56 are integrally connected by a partition wall 66, and both circumferential ends of the arc-shaped space S between the outer tube end and the inner tube 56 are blocked by the partition wall 66.

図4、及び図6に示すように、外筒58の開口64と内筒56の開口62との間の隙間は、モータ受け部材50の内筒56の内部空間に浸入した水をモータ受け部材50の外部に排出するための排水路68である。 As shown in Figures 4 and 6, the gap between the opening 64 of the outer tube 58 and the opening 62 of the inner tube 56 is a drainage channel 68 for discharging water that has entered the internal space of the inner tube 56 of the motor receiving member 50 to the outside of the motor receiving member 50.

図2に示すように、外筒58にモールドモータ100が挿入され、内筒56の上端にモールドモータ100が搭載されると、内筒56の上端と外筒58の内周面との間の開口が塞がれ、蓋部52と外筒58と内筒56と隔壁66とで囲まれる空間Sが密閉されて閉空間となる。 As shown in FIG. 2, when the molded motor 100 is inserted into the outer cylinder 58 and the molded motor 100 is mounted on the upper end of the inner cylinder 56, the opening between the upper end of the inner cylinder 56 and the inner peripheral surface of the outer cylinder 58 is blocked, and the space S surrounded by the lid portion 52, the outer cylinder 58, the inner cylinder 56, and the partition wall 66 is sealed to form a closed space.

図1に示すように、外筒58の上端には上外方へ突出する複数の取付脚70が一体成形されている。この取付脚70には、排水ポンプ1を室内ユニットへ固定するためのねじが貫通する取付孔72が形成されている。 As shown in FIG. 1, a number of mounting legs 70 that protrude upward and outward are integrally formed on the upper end of the outer cylinder 58. The mounting legs 70 have mounting holes 72 through which screws pass to secure the drainage pump 1 to the indoor unit.

外筒58の上端部における各取付脚70に対応する位置には取付穴90が形成されている。図3、5に示すように、本実施形態にあっては、この取付穴90は四角穴に形成されている。この取付穴90とモールドモータ100の凸部130とにより、モールドモータ100を筒状部60の外筒58にスナップフィット結合で着脱可能に固定する固定手段を構成している。 Attachment holes 90 are formed at the upper end of the outer tube 58 at positions corresponding to the mounting legs 70. As shown in Figures 3 and 5, in this embodiment, the attachment holes 90 are formed as square holes. The attachment holes 90 and the protrusions 130 of the molded motor 100 constitute a fixing means for removably fixing the molded motor 100 to the outer tube 58 of the cylindrical portion 60 by snap-fit connection.

モールドモータ100の上部の外周部には、3個の凸部130が一体成形されている。図5に示すように、凸部130の下面は傾斜面132とされており、モールドモータ100の各凸部130を外筒58の取付穴90の位置に合わせてモールドモータ100を外筒58に挿入すると、モールドモータ100の底面が内筒56の上端に当接するのとほぼ同時に各凸部130が取付穴90に嵌合してモールドモータ100が外筒58の内部に固定される。外筒58は、径方向に弾性変形するので、モールドモータ100を外筒58内に押し込むことにより、凸部130は取付穴90に対していわゆるスナップフィット結合で結合される。 Three protrusions 130 are integrally molded on the outer periphery of the upper part of the molded motor 100. As shown in FIG. 5, the lower surface of the protrusions 130 is an inclined surface 132. When the molded motor 100 is inserted into the outer cylinder 58 with each protrusion 130 aligned with the mounting hole 90 of the outer cylinder 58, the bottom surface of the molded motor 100 abuts against the upper end of the inner cylinder 56, and the protrusions 130 fit into the mounting hole 90 at almost the same time, and the molded motor 100 is fixed inside the outer cylinder 58. The outer cylinder 58 elastically deforms in the radial direction, so that the protrusions 130 are connected to the mounting hole 90 by a so-called snap fit connection when the molded motor 100 is pushed into the outer cylinder 58.

(作用、効果)
本実施形態の排水ポンプ1では、モールドモータ100を駆動し、回転羽根20がポンプ室14内で回転すると、吸込口12から吸い込まれた水が、吐出口16から吐出される。
(Action, Effect)
In the drainage pump 1 of this embodiment, when the molded motor 100 is driven and the rotating blades 20 rotate within the pump chamber 14 , water sucked in through the suction port 12 is discharged from the discharge port 16 .

回転羽根20がポンプ室14内で回転する事で発生した騒音は、取付軸21と開口部54との間の隙間Gを介して、モータ受け部材50の内部に進入する。図4に示すように、モータ受け部材50の内部に進入した騒音は、矢印Aで示すように、一部が排水路68を介して外部に伝達され、他の一部が矢印Bで示すように、筒状部60の内筒56と外筒58とを透過して外部に伝達される。 Noise generated by the rotating blades 20 rotating inside the pump chamber 14 enters the inside of the motor receiving member 50 through the gap G between the mounting shaft 21 and the opening 54. As shown in FIG. 4, part of the noise that enters the inside of the motor receiving member 50 is transmitted to the outside through the drainage channel 68 as shown by arrow A, and the other part is transmitted to the outside through the inner tube 56 and outer tube 58 of the cylindrical portion 60 as shown by arrow B.

図7には、比較例に係る排水ポンプ200が示されている。なお、本実施形態と同一構成には同一符号を付し、その説明は省略する。比較例に係る排水ポンプ200は、内筒56と外筒58とを有しているが、内筒56と外筒58との間には、周方向に連続する環状の空間S1が形成されており、この空間S1は、内筒56に形成された開口62と連通すると共に、外筒58に形成された開口64と連通している。 Figure 7 shows a drainage pump 200 according to a comparative example. The same components as those in this embodiment are given the same reference numerals and their description will be omitted. The drainage pump 200 according to the comparative example has an inner cylinder 56 and an outer cylinder 58, and a continuous annular space S1 is formed between the inner cylinder 56 and the outer cylinder 58 in the circumferential direction. This space S1 communicates with an opening 62 formed in the inner cylinder 56 and also communicates with an opening 64 formed in the outer cylinder 58.

比較例に係る排水ポンプ200では、本実施形態の排水ポンプ1と同様に、蓋部52の開口部54から内筒56の内部に騒音が進入する。内筒56の内部に進入した騒音は、一部が矢印Cで示すように内筒56の開口62、空間S1、及び外筒58の開口64を通過して外部へ伝達され、他の一部が、矢印Dで示すように内筒56を透過した後に外筒の開口64を通過して外部で伝達される。 In the drainage pump 200 of the comparative example, similar to the drainage pump 1 of the present embodiment, noise enters the interior of the inner cylinder 56 from the opening 54 of the lid portion 52. A portion of the noise that enters the interior of the inner cylinder 56 passes through the opening 62 of the inner cylinder 56, the space S1, and the opening 64 of the outer cylinder 58 as shown by arrow C and is transmitted to the outside, while another portion passes through the inner cylinder 56 and then the opening 64 of the outer cylinder as shown by arrow D and is transmitted to the outside.

図7に示すように、本実施形態の排水ポンプ1では、筒状部60の空間Sが閉空間とされており、内筒56を透過した騒音は、さらに外筒58を透過してから外部で伝達される構成とされているので、比較例の排水ポンプ200のように、内筒56を透過した騒音が外筒58の開口64を介してそのまま外部に伝達される場合に比較して、モータ受け部材50の外側での騒音のレベルを低下させることができる。 As shown in FIG. 7, in the drainage pump 1 of this embodiment, the space S of the cylindrical portion 60 is a closed space, and the noise that passes through the inner tube 56 is further transmitted through the outer tube 58 before being transmitted to the outside. This reduces the noise level outside the motor receiving member 50 compared to the drainage pump 200 of the comparative example, in which the noise that passes through the inner tube 56 is transmitted directly to the outside via the opening 64 of the outer tube 58.

[第2の実施形態]
次に、図8にしたがって本発明の第2の実施形態に係る排水ポンプ1を説明する。なお、第1の実施形態と同一構成には同一符号を付し、その説明は省略する。
図8に示すように、本実施形態の排水ポンプ1では、筒状部60の空間Sに、遮音材140が充填されている。
Second Embodiment
Next, a drainage pump 1 according to a second embodiment of the present invention will be described with reference to Fig. 8. Note that the same components as those in the first embodiment are given the same reference numerals, and the description thereof will be omitted.
As shown in FIG. 8 , in the drainage pump 1 of this embodiment, the space S of the cylindrical portion 60 is filled with a sound-proofing material 140 .

遮音材140としては、一例として、繊維状部材(グラスウール、ロックウール、天然繊維等)、パテ、モルタル等を用いることができる。遮音効果を高めるために、遮音材140は、比重の大きなものを用いることが好ましく、一例として、モータ受け部材50を構成する材料よりも比重の大きな材料を用いることが好ましい。なお、パテを用いる場合、パテに金属粉を混入させてもよい。 As the sound insulation material 140, for example, a fibrous material (glass wool, rock wool, natural fiber, etc.), putty, mortar, etc. can be used. To enhance the sound insulation effect, it is preferable to use a material with a large specific gravity for the sound insulation material 140, and for example, it is preferable to use a material with a larger specific gravity than the material constituting the motor receiving member 50. When using putty, metal powder may be mixed into the putty.

[その他の実施形態]
以上、本発明の一実施形態について説明したが、本発明は、上記に限定されるものでなく、上記以外にも、その主旨を逸脱しない範囲内において種々変形して実施可能であることは勿論である。
[Other embodiments]
Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and it goes without saying that the present invention can be implemented in various modified forms without departing from the spirit and scope of the present invention.

上記実施形態の排水ポンプ1では、筒状部60が二重管構造とされていたが、径の異なる3つ以上の筒で構成した多重管構造としてもよい。
そして、3つ以上の筒のうち径方向で対向する2つの筒によって閉空間を構成してもよい。上記実施形態の排水ポンプ1では、内筒56と外筒58との間の上部の開口がモールドモータ100によって閉塞されたが、内筒56と外筒58との間の上部の開口はモールドモータ100以外で閉塞されてもよい。例えば、内筒56と外筒58との間の上部の開口は壁部で閉塞されてもよい。
上記実施形態の排水ポンプ1は、筒状部60が複数の筒、具体的には2つの筒を備え、これら2つの筒の間に閉空間が形成された。しかしながら、本発明は、筒状部60が複数の筒を備える構成に限定されない。他の例では、筒状部60が1つの筒を備え、この筒の厚み内に閉空間が形成される構成であってもよい。このような排水ポンプ1は、例えば、筒状部60を、発泡した樹脂等、硬化する際に内部に閉空間を形成する材料で構成してもよい。または、ポンプ本体10を3Dプリンタで形成することで、筒状部60の内部に1つまたは複数の閉空間を形成してもよい。筒状部60の製造方法は限定されるものではない。
このように、筒状部60が1つの筒を備える構成であることによって、筒状部60自体の剛性を向上でき、結果、排水ポンプ1の剛性を向上できる。
In the drainage pump 1 of the above embodiment, the cylindrical portion 60 has a double-pipe structure, but it may have a multiple-pipe structure made up of three or more pipes with different diameters.
And, the closed space may be formed by two of the three or more cylinders that are opposed to each other in the radial direction. In the drainage pump 1 of the above embodiment, the upper opening between the inner cylinder 56 and the outer cylinder 58 is closed by the molded motor 100, but the upper opening between the inner cylinder 56 and the outer cylinder 58 may be closed by something other than the molded motor 100. For example, the upper opening between the inner cylinder 56 and the outer cylinder 58 may be closed by a wall portion.
In the drainage pump 1 of the above embodiment, the cylindrical portion 60 includes a plurality of cylinders, specifically, two cylinders, and a closed space is formed between the two cylinders. However, the present invention is not limited to a configuration in which the cylindrical portion 60 includes a plurality of cylinders. In another example, the cylindrical portion 60 may include one cylinder, and a closed space may be formed within the thickness of the cylinder. In such a drainage pump 1, for example, the cylindrical portion 60 may be made of a material that forms a closed space inside when hardened, such as a foamed resin. Alternatively, one or more closed spaces may be formed inside the cylindrical portion 60 by forming the pump body 10 with a 3D printer. The manufacturing method of the cylindrical portion 60 is not limited.
In this manner, by configuring the cylindrical portion 60 to have a single tube, the rigidity of the cylindrical portion 60 itself can be improved, and as a result, the rigidity of the drainage pump 1 can be improved.

1 排水ポンプ
10 ポンプ本体
12 吸込口
14 ポンプ室
16 吐出口
21 取付軸(回転力伝達部材)
20 回転羽根
50 モータ受け部材
52 蓋部
54 開口部
56 内筒(内壁面)
58 外筒(外壁面)
60 筒状部
68 排水路
100 モールドモータ(モータ)
140 遮音材
REFERENCE SIGNS LIST 1 Drain pump 10 Pump body 12 Suction port 14 Pump chamber 16 Discharge port 21 Mounting shaft (rotational force transmission member)
20 Rotating blade 50 Motor receiving member 52 Lid portion 54 Opening portion 56 Inner cylinder (inner wall surface)
58 Outer cylinder (outer wall surface)
60: Cylindrical portion 68: Drainage channel 100: Molded motor (motor)
140 Soundproofing material

Claims (4)

吸込口、吐出口、及び前記吸込口と前記吐出口とに連通し上部が開口したポンプ室を備えたポンプ本体と、
前記ポンプ室内に配置された回転羽根と、
前記回転羽根を回転させるモータと、
前記ポンプ本体の上部に配置され前記ポンプ本体の開口を覆い前記モータの回転駆動力を前記回転羽根に伝達する回転力伝達部材が貫通する開口部が形成された蓋部、及び前記蓋部の上面に設けられ前記モータを上部に支持する筒状部を備えると共に、前記筒状部に内外を連通する排水路が形成されたモータ受け部材と、
を備え、
前記筒状部は、径方向内側の内壁面と径方向外側の外壁面とを有し、前記内壁面と前記外壁面との間には閉空間が設けられている、
排水ポンプ。
a pump body including a suction port, a discharge port, and a pump chamber communicating with the suction port and the discharge port and having an open upper portion;
A rotating blade disposed in the pump chamber;
A motor that rotates the rotor blades;
a motor receiving member including a lid portion disposed on an upper portion of the pump body, covering an opening of the pump body, and having an opening through which a rotational force transmission member for transmitting a rotational driving force of the motor to the rotor blades passes, and a cylindrical portion disposed on an upper surface of the lid portion and supporting the motor at an upper portion, the cylindrical portion having a drainage passage formed therein to communicate the inside and the outside;
Equipped with
The cylindrical portion has a radially inner wall surface and a radially outer wall surface, and a closed space is provided between the inner wall surface and the outer wall surface.
Drain pump.
前記筒状部は、前記内壁面と前記外壁面との間に上部が開口された空間を備え、
前記閉空間は、前記空間の開口が前記モータで塞がれて形成されている、
請求項1に記載の排水ポンプ。
The cylindrical portion has a space between the inner wall surface and the outer wall surface, the space having an open upper portion,
The closed space is formed by closing an opening of the space with the motor.
The drainage pump according to claim 1.
前記内壁面を構成する内筒と、
前記外壁面を構成し、前記内筒よりも高く形成された外筒と、
を備え、
前記外筒に挿入された前記モータが前記内筒の上端に載置されて前記開口が塞がれている、
請求項2に記載の排水ポンプ。
An inner cylinder that constitutes the inner wall surface;
an outer cylinder that constitutes the outer wall surface and is formed higher than the inner cylinder;
Equipped with
The motor inserted into the outer cylinder is placed on the upper end of the inner cylinder to close the opening.
The drainage pump according to claim 2.
前記空間には、遮音材が充填されている、
請求項2または請求項3に記載の排水ポンプ。
The space is filled with a sound-insulating material.
The drainage pump according to claim 2 or 3.
JP2022099108A 2022-06-20 2022-06-20 Drainage pump Active JP7485388B2 (en)

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JP2022099108A JP7485388B2 (en) 2022-06-20 2022-06-20 Drainage pump
CN202310582505.2A CN117267137A (en) 2022-06-20 2023-05-23 Draining pump

Applications Claiming Priority (1)

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JP7485388B2 true JP7485388B2 (en) 2024-05-16

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006183535A (en) 2004-12-27 2006-07-13 Saginomiya Seisakusho Inc Vertical-type centrifugal pump and air conditioner in which the pump is used
JP2021188515A (en) 2020-05-25 2021-12-13 株式会社不二工機 Drainage pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006183535A (en) 2004-12-27 2006-07-13 Saginomiya Seisakusho Inc Vertical-type centrifugal pump and air conditioner in which the pump is used
JP2021188515A (en) 2020-05-25 2021-12-13 株式会社不二工機 Drainage pump

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