JP2009002244A - Pump - Google Patents

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Publication number
JP2009002244A
JP2009002244A JP2007164223A JP2007164223A JP2009002244A JP 2009002244 A JP2009002244 A JP 2009002244A JP 2007164223 A JP2007164223 A JP 2007164223A JP 2007164223 A JP2007164223 A JP 2007164223A JP 2009002244 A JP2009002244 A JP 2009002244A
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Japan
Prior art keywords
pump
protective tube
motor case
impeller
water tank
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Granted
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JP2007164223A
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Japanese (ja)
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JP4803123B2 (en
Inventor
Toshisuke Sakai
敏輔 酒井
Tetsuya Fukuda
哲也 福田
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Panasonic Electric Works Co Ltd
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Panasonic Electric Works Co Ltd
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Priority to JP2007164223A priority Critical patent/JP4803123B2/en
Priority to PCT/JP2008/061249 priority patent/WO2008156143A1/en
Publication of JP2009002244A publication Critical patent/JP2009002244A/en
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Publication of JP4803123B2 publication Critical patent/JP4803123B2/en
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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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0693—Details or arrangements of the wiring

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pump capable of securing water tightness with single pump and excellent in assemblability. <P>SOLUTION: This pump pressurizes liquid sucked from a suction port 12 by centrifugal force of rotation of an impeller 14 and feeding out from a delivery port 13. A motor case 16 holding a drive means for driving and rotating the impeller therein is provided with a protection pipe 17 projecting outside as one unit, and lead wire 23 for supplying electric power source to the drive means is provided in the protection pipe 17. When the pump is installed in a water tank, the protection pipe and the water tank need to be water tightly connected but the lead wire need not to be sealed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、羽根車の回転で液体を吸入吐出するポンプ、殊に液中に浸漬した状態で配設されるポンプに関するものである。   The present invention relates to a pump that sucks and discharges liquid by rotation of an impeller, and more particularly, to a pump that is disposed in a state immersed in liquid.

ポンプ室に配する羽根車にロータマグネットを設けた構造の遠心ポンプにおいては、上記羽根車を駆動するための磁気駆動部を上記ポンプ室に対して完全に仕切られた空間に配置することができるために、磁気駆動部へのポンプ室側からの液体の侵入の虞がなく、このために液中に浸漬した状態で配設する水中ポンプとしての使用に容易に対応させることができる。   In a centrifugal pump having a structure in which a rotor magnet is provided in an impeller disposed in a pump chamber, a magnetic drive unit for driving the impeller can be disposed in a space completely separated from the pump chamber. For this reason, there is no risk of liquid intrusion from the pump chamber side to the magnetic drive unit, and for this reason, it can be easily adapted for use as a submersible pump disposed in the liquid.

この場合、上記磁気駆動部を収めたモータケース内の空間は、パッキンなどによるシールで水密に保持したり、モールドやポッティングによって水密構造としたりすることになるが、電源供給については二重被覆のキャブタイヤケーブルなどをパッキングやＯリングでモータケースにシールしても、その可動時の応力やケーブルの変形などでシール性が損なわれて漏水が生じるという問題を有している。   In this case, the space inside the motor case containing the magnetic drive unit is kept watertight with a seal such as packing, or has a watertight structure by molding or potting. Even if a cabtyre cable or the like is sealed to the motor case with packing or an O-ring, there is a problem that the sealing performance is impaired due to stress at the time of movement or deformation of the cable, resulting in water leakage.

このために特許文献１においては、モータケースと水槽とを固定するとともにケーブルをパッキングでシール固定するものが提案されている。この場合、水槽に固定されたモータケースから引き出されたケーブルを弾性体で挟み込んで固定するためにケーブルが動くことによる上記問題を招くことがない。   For this reason, Patent Document 1 proposes a method in which the motor case and the water tank are fixed and the cable is sealed with a packing. In this case, the above-mentioned problem due to the movement of the cable is not caused to sandwich and fix the cable drawn from the motor case fixed to the water tank with an elastic body.

しかし、上記のものでは水槽にモータケースを固定しないことにはポンプが完成しないために、ポンプ単品での水密性の確認ができない。また、シール固定にあたって複数の部品を必要とするために、組立作業に時間がかかる上に、ポンプ運転時の振動によって水密性が損なわれてしまう虞がある。
実公平６−４９９２０号公報 However, in the above, the pump cannot be completed without fixing the motor case to the water tank, so that the watertightness of the pump alone cannot be confirmed. In addition, since a plurality of parts are required for fixing the seal, it takes a long time to assemble, and there is a possibility that watertightness may be lost due to vibration during pump operation.
Japanese Utility Model Publication No. 6-49920

本発明は上記の従来の問題点に鑑みて発明したものであって、ポンプ単品で水密性を確保することができる上に組立性にも優れるポンプをを提供することを課題とするものである。   The present invention has been invented in view of the above-described conventional problems, and it is an object of the present invention to provide a pump that can ensure water tightness with a single pump and has excellent assemblability. .

上記課題を解決するために本発明は、回転駆動される羽根車を備えて、該羽根車の回転で吸い込み口から吸い込んだ液体を遠心力によって加圧して吐出口から送り出すポンプにおいて、羽根車を回転駆動するための駆動手段を内部に納めたモータケースは外部に突出する保護管を一体に備えて、該保護管内に上記駆動手段に至る電源供給のためのリード線が配されていることに特徴を有している。   In order to solve the above-mentioned problems, the present invention provides an impeller that is provided with an impeller that is driven to rotate, pressurizes the liquid sucked from the suction port by the rotation of the impeller by centrifugal force, and sends the liquid from the discharge port. The motor case in which the driving means for rotationally driving is internally provided with a protective tube protruding outside, and lead wires for supplying power to the driving means are arranged in the protective tube. It has characteristics.

水槽内に設置する時、保護管と水槽とを水密的に連結すればよいものであり、リード線をシールしなくてもすむものである。   When installing in the water tank, the protective tube and the water tank need only be connected in a watertight manner, and the lead wires need not be sealed.

上記保護管のモータケース側の根元部に補強リブが設けられていると、水槽内に液体が無い時のポンプの荷重を保護管で支えることが容易となる。   If the reinforcing rib is provided at the root of the protective tube on the motor case side, it becomes easy to support the load of the pump when there is no liquid in the water tank with the protective tube.

また、上記保護管は上記リード線の先端に付設されたコネクタを通すことができる大きさの内径を有するものとしておくと、モータケース内への部品組み込みの手順を簡便にすることができる。   If the protective tube has an inner diameter large enough to allow the connector attached to the tip of the lead wire to pass therethrough, the procedure for assembling the components into the motor case can be simplified.

上記保護管はその端部にシール部材装着用の段部を備えたものであると、保護管と水槽とのシールを容易に行うことができるものとなる。   If the protective tube is provided with a step for attaching a seal member at its end, the protective tube and the water tank can be easily sealed.

上記保護管は吐出口の突出方向と同方向に突出していると、殊に上記保護管と上記吐出口とが補強具で連結されていると、水槽内に液体が無い時のポンプの荷重の支持をより確実に行うことができる。   When the protective tube protrudes in the same direction as the discharge port, particularly when the protective tube and the discharge port are connected by a reinforcing tool, the load of the pump when there is no liquid in the water tank is obtained. Support can be performed more reliably.

本発明は、モータケースから突出させた保護管内に電源供給のためのリード線を配していることから、このポンプを水槽内に設置する時、保護管と水槽とを水密的に連結することで、モータケース内の駆動手段の水密性を確保することができるものであり、リード線をシールするという手間がかかる上に水密性について問題を招きやすいことをしなくてもすむものである。また、保護管の先端を閉じておくことでポンプ単体での水密性の確認ができるものである。   In the present invention, since the lead wire for supplying power is arranged in the protective tube protruding from the motor case, when this pump is installed in the water tank, the protective tube and the water tank are connected in a watertight manner. Thus, the water tightness of the driving means in the motor case can be ensured, and it takes time and effort to seal the lead wire, and it is not necessary to cause a problem with respect to the water tightness. In addition, the watertightness of the pump alone can be confirmed by closing the tip of the protective tube.

以下、本発明を添付図面に示す実施形態に基いて説明すると、このポンプ１は、吸い込み口１２及び吐出口１３を備えたポンプケース１１とモータケース１６とによって囲まれたポンプ室内にロータマグネット１５を備えた羽根車１４が配設されている。複数の羽根１４が回転中心部から外縁部まで放射状に設けられている図示の羽根車１４は、モータケース１６の中央に固定された軸３０に対して、軸受３１とスラスト軸受３２とによって軸回りに回転自在に支持されている。   Hereinafter, the present invention will be described based on an embodiment shown in the accompanying drawings. This pump 1 includes a rotor magnet 15 in a pump chamber surrounded by a pump case 11 having a suction port 12 and a discharge port 13 and a motor case 16. Is provided. In the illustrated impeller 14 in which a plurality of blades 14 are provided radially from the rotation center to the outer edge, a shaft 30 fixed to the center of the motor case 16 is rotated around a shaft by a bearing 31 and a thrust bearing 32. Is supported rotatably.

上記モータケース１６は上記ロータマグネット１５を備える羽根車１４を回転させるための回転磁界を発生させるステータ２１と、このステータ２１のコイルに電流を供給する駆動回路を実装した基板２２を内部に納めたもので、アルミニウム等の金属あるいは耐熱プラスチックからなり、その開口面は全周がモータケース１６に溶着された蓋３５で閉じられているとともに、モータケース１６内の空間には樹脂１８が充填されることで水密が確保されている。   The motor case 16 has a stator 21 for generating a rotating magnetic field for rotating the impeller 14 provided with the rotor magnet 15 and a substrate 22 mounted with a drive circuit for supplying a current to the coil of the stator 21 housed therein. It is made of a metal such as aluminum or a heat-resistant plastic, and its opening surface is closed with a lid 35 welded to the motor case 16 and the space inside the motor case 16 is filled with a resin 18. This ensures watertightness.

上記ステータ２１で回転磁界を発生させた時、ロータマグネット１５を備えた羽根車１４が回転し、この時、吸い込み口１２から吸い込まれた液体は羽根車１４の遠心力によって加圧されながら羽根車１４の外縁部へと送り出され、吐出口１３から吐出される。   When a rotating magnetic field is generated by the stator 21, the impeller 14 provided with the rotor magnet 15 rotates. At this time, the liquid sucked from the suction port 12 is pressurized by the centrifugal force of the impeller 14, and the impeller. 14 is sent out to the outer edge portion 14 and discharged from the discharge port 13.

ここにおいて、上記ポンプ１は、送り出すべき液体を収容した水槽３内に配されて上記液体に浸漬した状態で使用されて、上記液体を水槽３外に送り出すものであり、このために上記吐出口１３は管状に形成されて水槽３の側面に嵌合連結されて溶着固定されるものとなっている。   Here, the pump 1 is arranged in a water tank 3 containing a liquid to be sent out and is used in a state of being immersed in the liquid, and sends out the liquid to the outside of the water tank 3. 13 is formed in a tubular shape, and is fitted and connected to the side surface of the water tank 3 to be welded and fixed.

また、上記モータケース１６の側面からは、上記の管状の吐出口１３と同方向に保護管１７を突設している。モータケース１６と一体に形成されて先端が水槽３の壁面に嵌合連結される保護管１７は、上記モータケース１７内の空間を水槽３外の空間に接続するためのもので、上記ステータ１６や基板２２への電源供給や信号供給のためのリード線２３は、この保護管１７の内部を通って水槽３外に導出されている。   A protective tube 17 projects from the side surface of the motor case 16 in the same direction as the tubular discharge port 13. A protective tube 17 that is formed integrally with the motor case 16 and whose tip is fitted and connected to the wall surface of the water tank 3 is for connecting the space inside the motor case 17 to the space outside the water tank 3. Lead wires 23 for supplying power and signals to the substrate 22 are led out of the water tank 3 through the inside of the protective tube 17.

つまり、ポンプ１そのものは水槽３内の液体中に浸漬されているが、ポンプ１のモータケース１６内の空間は、保護管１７を通じて水槽３外の空間につながっていることから、上記リード線２３が動いて上記樹脂１８との間に隙間が生じるようなことがあっても、リード線２３は液中に無いことから、モータケース１６内に液体が侵入することはない。   That is, although the pump 1 itself is immersed in the liquid in the water tank 3, the space inside the motor case 16 of the pump 1 is connected to the space outside the water tank 3 through the protective tube 17. The lead wire 23 is not in the liquid, so that the liquid does not enter the motor case 16 even if the gap moves between the resin 18 and the resin 18.

ここで、保護管１７を吐出口１３と同方向に突出させているのは、水槽３との連結を容易とするためである。また、保護管１７の内径は、リード線２３の先端に付設されるコネクタ２４を通すことができる大きさのものとしてある。コネクタ２４付きのリード線２３を基板２２に接続した後、基板２２をモータケース１６内に配設するとともにこの時にコネクタ２４を保護管１７を通じて外に引き出せるようにしているわけである。なお、コネクタ２４を後付けとする場合は、保護管１７はリード線２３を通すことができるだけの内径のものでよい。   Here, the reason why the protective tube 17 protrudes in the same direction as the discharge port 13 is to facilitate the connection with the water tank 3. The protective tube 17 has an inner diameter that allows the connector 24 attached to the distal end of the lead wire 23 to pass therethrough. After the lead wire 23 with the connector 24 is connected to the substrate 22, the substrate 22 is disposed in the motor case 16 and at this time, the connector 24 can be pulled out through the protective tube 17. When the connector 24 is retrofitted, the protective tube 17 may have an inner diameter that allows the lead wire 23 to pass through.

水槽３に液体が満たされていない場合、ポンプ１の荷重は水槽３に連結された保護管１７及び吐出口１３の部分で支持することになるために、保護管１７（及び吐出口１３）の根元部分は図２に示すようにリブ１９で補強しておくことが望ましい。また、吐出口１３と保護管１７とを補強具３６で連結しておけば、互いに応力を分散させることができるために、耐荷重の点でより好ましいものとなる。   When the water tank 3 is not filled with liquid, the load of the pump 1 is supported by the part of the protective tube 17 and the discharge port 13 connected to the water tank 3, so that the protective tube 17 (and the discharge port 13) It is desirable to reinforce the root portion with ribs 19 as shown in FIG. Further, if the discharge port 13 and the protective tube 17 are connected by the reinforcing tool 36, the stress can be dispersed with each other, which is more preferable in terms of load resistance.

保護管１７の先端は段部を設けて先細にしておくと、水槽３との連結に際してＯリング３３を配設することができるために、保護管１７と水槽３との連結部の水密性の確保で有利となる。また、ここでは保護管１７をモータケース１６と一体に成形したものを示したが、モータケース１６に溶接（溶着）等の手段で後付けして一体化したものであってもよいのはもちろんである。   If the tip of the protective tube 17 is tapered with a stepped portion, an O-ring 33 can be provided for connection with the water tank 3, so that the water tightness of the connection portion between the protective tube 17 and the water tank 3 can be reduced. It is advantageous in securing. Although the protective tube 17 is formed integrally with the motor case 16 here, it may of course be integrated with the motor case 16 by means of welding (welding) or the like. is there.

本発明の実施の形態の一例を示す断面図である。It is sectional drawing which shows an example of embodiment of this invention. 同上の他例の部分斜視図である。It is a fragmentary perspective view of the other example same as the above.

符号の説明Explanation of symbols

１１ ポンプケーシング
１２ 吸い込み口
１３ 吐出口
１４ 羽根車
１６ モータケース
１７ 保護管
２３ リード線 11 Pump casing 12 Suction port 13 Discharge port 14 Impeller 16 Motor case 17 Protective tube 23 Lead wire

Claims (6)

回転駆動される羽根車を備えて、該羽根車の回転で吸い込み口から吸い込んだ液体を遠心力によって加圧して吐出口から送り出すポンプであり、羽根車を回転駆動するための駆動手段を内部に納めたモータケースは外部に突出する保護管を一体に備えて、該保護管内に上記駆動手段に至る電源供給のためのリード線が配されていることを特徴とするポンプ。   A pump having a rotationally driven impeller, a pump that pressurizes the liquid sucked from the suction port by the rotation of the impeller by centrifugal force and feeds it from the discharge port, and has a driving means for rotationally driving the impeller inside The pump is characterized in that the housed motor case is integrally provided with a protective tube projecting to the outside, and a lead wire for supplying power to the driving means is arranged in the protective tube. 上記保護管のモータケース側の根元部には補強リブが設けられていることを特徴とする請求項１記載のポンプ。   The pump according to claim 1, wherein a reinforcing rib is provided at a base portion of the protective tube on the motor case side. 上記保護管は上記リード線の先端に付設されたコネクタを通すことができる大きさの内径を有するものであることを特徴とする請求項１または２記載のポンプ。   The pump according to claim 1 or 2, wherein the protective tube has an inner diameter large enough to allow a connector attached to the tip of the lead wire to pass therethrough. 上記保護管はその端部にシール部材装着用の段部を備えたものであることを特徴とする請求項１〜３のいずれか１項に記載のポンプ。   The pump according to any one of claims 1 to 3, wherein the protective tube has a step portion for attaching a seal member at an end thereof. 上記保護管は吐出口の突出方向と同方向に突出していることを特徴とする請求項１〜４のいずれか１項に記載のポンプ。   The pump according to any one of claims 1 to 4, wherein the protective tube protrudes in the same direction as the protruding direction of the discharge port. 上記保護管と上記吐出口とが補強具で連結されていることを特徴とする請求項５記載のポンプ。   6. The pump according to claim 5, wherein the protective tube and the discharge port are connected by a reinforcing tool.
JP2007164223A 2007-06-21 2007-06-21 pump Expired - Fee Related JP4803123B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2007164223A JP4803123B2 (en) 2007-06-21 2007-06-21 pump
PCT/JP2008/061249 WO2008156143A1 (en) 2007-06-21 2008-06-19 Pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007164223A JP4803123B2 (en) 2007-06-21 2007-06-21 pump

Publications (2)

Publication Number Publication Date
JP2009002244A true JP2009002244A (en) 2009-01-08
JP4803123B2 JP4803123B2 (en) 2011-10-26

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WO (1) WO2008156143A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020101130A (en) * 2018-12-21 2020-07-02 日本電産サンキョー株式会社 Pump device

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