JP2015063900A - Electrically-driven water pump - Google Patents

Electrically-driven water pump Download PDF

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Publication number
JP2015063900A
JP2015063900A JP2013196493A JP2013196493A JP2015063900A JP 2015063900 A JP2015063900 A JP 2015063900A JP 2013196493 A JP2013196493 A JP 2013196493A JP 2013196493 A JP2013196493 A JP 2013196493A JP 2015063900 A JP2015063900 A JP 2015063900A
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JP
Japan
Prior art keywords
volute chamber
discharge port
water pump
peripheral side
downstream
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Pending
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JP2013196493A
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Japanese (ja)
Inventor
健彌 寶井
Kenya Takarai
健彌 寶井
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Hitachi Astemo Ltd
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Hitachi Automotive Systems Ltd
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Application filed by Hitachi Automotive Systems Ltd filed Critical Hitachi Automotive Systems Ltd
Priority to JP2013196493A priority Critical patent/JP2015063900A/en
Priority to US14/430,349 priority patent/US20160258444A1/en
Priority to DE112014000220.8T priority patent/DE112014000220T5/en
Priority to CN201480002182.4A priority patent/CN104718381A/en
Priority to PCT/JP2014/068661 priority patent/WO2015045569A1/en
Publication of JP2015063900A publication Critical patent/JP2015063900A/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
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4293—Details of fluid inlet or outlet
    • 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
    • F04D29/448—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps bladed diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal 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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/428—Discharge tongues
    • 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
    • F04D29/441—Fluid-guiding means, e.g. diffusers 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
    • F05D2240/00—Components
    • F05D2240/10—Stators
    • F05D2240/12—Fluid guiding means, e.g. vanes
    • F05D2240/126—Baffles or ribs

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

Abstract

PROBLEM TO BE SOLVED: To provide a water pump which can increase efficiency.SOLUTION: A flow adjusting plate is provided which is positioned downstream of an end of a tongue part separating a downstream side, connected to a discharge port, and an upstream side of a volute chamber, and which reduces the flow speed of cooling water in an outer peripheral side of the volute chamber.

Description

本発明は、電動ウォータポンプに関する。   The present invention relates to an electric water pump.

この種の技術としては、下記の特許文献1に記載の技術が開示されている。特許文献1には、吐出し管に連通する曲り流路を第1の流路と第2の流路とに仕切る仕切り壁を有するポンプが開示されている。   As this type of technique, a technique described in Patent Document 1 below is disclosed. Patent Document 1 discloses a pump having a partition wall that partitions a curved flow path communicating with a discharge pipe into a first flow path and a second flow path.

特開2001-336499号公報JP 2001-336499 A

特許文献1に記載の技術では、曲り流路の半分以上にわたって仕切り壁が設けられているため、流速の損失が大きく効率が悪化するおそれがあった。
本発明は、上記問題に着目されたもので、その目的とするところは、効率を高めることができるウォータポンプを提供することである。 In the technique described in Patent Document 1, since the partition wall is provided over half or more of the curved flow path, there is a possibility that the loss of flow velocity is large and the efficiency is deteriorated.
The present invention has been focused on the above problems, and its object is to provide a water pump capable of increasing efficiency.

上記目的を達成するため本発明では、下流側が吐出口につながるボリュート室の下流側と上流側とを区切る舌部の端部よりも下流側に設けられ、ボリュート室の外周側の冷却水の流速を低下させる整流板を設けた。   In order to achieve the above object, in the present invention, the flow rate of the cooling water on the outer peripheral side of the volute chamber is provided on the downstream side of the end of the tongue that separates the downstream side and the upstream side of the volute chamber connected to the discharge port on the downstream side. A rectifying plate is provided to lower the temperature.

よって本発明では、ポンプ効率を高めることができる。   Therefore, in this invention, pump efficiency can be improved.

実施例1の電動ウォータポンプの斜視図である。1 is a perspective view of an electric water pump according to Embodiment 1. FIG. 実施例1の電動ウォータポンプのポンプカバーを取り外した状態の図である。FIG. 3 is a view showing a state where a pump cover of the electric water pump according to the first embodiment is removed. 整流板を設けなかったときのボリュート室内の冷却水の流れを示す図である。It is a figure which shows the flow of the cooling water in a volute room when a baffle plate is not provided. 実施例1の整流板を設けたときのボリュート室内の冷却水の流れを示す図である。FIG. 3 is a diagram showing the flow of cooling water in the volute chamber when the current plate of Example 1 is provided. 実施例2の電動ウォータポンプのポンプカバーを取り外した状態の図である。FIG. 6 is a view showing a state where a pump cover of the electric water pump according to the second embodiment is removed.

〔実施例1〕
実施例1の電動ウォータポンプ1は、作動流体として冷却媒体（冷却水）を用い、熱交換機（ラジエータ）に接続された循環回路中に組み込まれる冷却用ポンプであり、例えばハイブリッド自動車においてエンジン（内燃機関）や駆動用モータ、インバータ等に冷却水を供給するウォータポンプである。
図1は電動ウォータポンプ1の斜視図である。電動ウォータポンプ1はポンプハウジング2内に収容されている。ポンプハウジング2はポンプボディ21とポンプカバー22とから構成されている。ポンプカバー22には、吸入口23と吐出口24とが形成されている。電動ウォータポンプ1の内部には複数の羽30を有するインペラ3が回転するようになっており、インペラ3が回転することで、吸入口23から冷却水を吸入して、吐出口24から冷却水を吐出する。
図2は電動ウォータポンプ1のポンプカバー22を取り外した状態の図である。インペラ3は、ポンプボディ21とポンプカバー22とによって内部に形成される空間（インペラ収容部26）に収容されている。インペラ3はポンプボディ21に固定された回転軸25に回転自在に設けられている。インペラ収容部26の外周部には渦巻き状に溝が形成されたボリュート室27が設けられている。ボリュート室27は、図2のA点を始点としてインペラ3の回転方向（図2において右回り）と同方向の渦巻き状に形成されている。以下では、ボリュート室27のインペラ3の回転方向反対側を上流側、回転方向側を下流側と称する。ボリュート室27の最下流部の吐出口連結部27aは、ポンプカバーの吐出口24に接続する。また吐出口連結部27aの側面は円弧上に形成されている。ポンプボディ21には、ボリュート室27の上流側と下流側とを区切る舌部21aが形成されている。
ボリュート室27内には、整流板28が形成されている。整流板28はボリュート室27の一部を２本の流路に分断するように設けられている。整流板28の高さは、ボリュート室27の高さ方向と同じ高さに形成されている。整流板28は、ボリュート室27の下流側に設けられており、上流側端部28aは舌部21aの端部よりも下流側に設けられている。整流板28の下流側端部28bは吐出口連結部27aまで伸びているが、吐出口連結部27aの側面には当接しないようになっている。整流板28の上流側端部28aはボリュート室27の幅方向中間点（線B上の点）よりも外周側に位置し、下流側端部28bはボリュート室27の幅方向中間点（線B上の点）よりも内周側に位置するように形成されている。 Example 1
The electric water pump 1 of the first embodiment is a cooling pump that uses a cooling medium (cooling water) as a working fluid and is incorporated in a circulation circuit connected to a heat exchanger (radiator). Engine), a driving motor, an inverter, and the like.
FIG. 1 is a perspective view of the electric water pump 1. The electric water pump 1 is accommodated in a pump housing 2. The pump housing 2 includes a pump body 21 and a pump cover 22. The pump cover 22 is formed with a suction port 23 and a discharge port 24. An impeller 3 having a plurality of blades 30 rotates inside the electric water pump 1, and the impeller 3 rotates to suck cooling water from the suction port 23 and to cool water from the discharge port 24. Is discharged.
FIG. 2 is a view of the electric water pump 1 with the pump cover 22 removed. The impeller 3 is accommodated in a space (impeller accommodating portion 26) formed inside by the pump body 21 and the pump cover 22. The impeller 3 is rotatably provided on a rotary shaft 25 fixed to the pump body 21. A volute chamber 27 having a spiral groove is provided on the outer peripheral portion of the impeller accommodating portion 26. The volute chamber 27 is formed in a spiral shape in the same direction as the rotation direction of the impeller 3 (clockwise in FIG. 2) starting from the point A in FIG. Hereinafter, the side opposite to the rotation direction of the impeller 3 in the volute chamber 27 is referred to as the upstream side, and the rotation direction side is referred to as the downstream side. The discharge port connecting portion 27a at the most downstream portion of the volute chamber 27 is connected to the discharge port 24 of the pump cover. The side surface of the discharge port connecting portion 27a is formed on an arc. The pump body 21 is formed with a tongue portion 21a that separates the upstream side and the downstream side of the volute chamber 27 from each other.
A rectifying plate 28 is formed in the volute chamber 27. The rectifying plate 28 is provided so as to divide a part of the volute chamber 27 into two flow paths. The height of the current plate 28 is formed to be the same as the height direction of the volute chamber 27. The rectifying plate 28 is provided on the downstream side of the volute chamber 27, and the upstream end portion 28a is provided on the downstream side of the end portion of the tongue portion 21a. The downstream end portion 28b of the rectifying plate 28 extends to the discharge port connecting portion 27a, but does not contact the side surface of the discharge port connecting portion 27a. The upstream end 28a of the rectifying plate 28 is located on the outer peripheral side of the intermediate point (the point on the line B) of the volute chamber 27, and the downstream end 28b is the intermediate point (the line B) of the volute chamber 27. It is formed so as to be located on the inner peripheral side from the upper point).

［作用］
図3は整流板28を設けなかったときのボリュート室27内の冷却水の流れを示す図である。インペラ3の回転により吸入口23から吸入された冷却水は遠心力によってボリュート室27に送られ、インペラ3の回転方向と同じ方向に流れる。このとき、ボリュート室27の外周側の流速は、内周側の流速よりも速くなる。そのため、ボリュート室27の吐出口連結部27aでは外周側から内周側に向かって旋回する旋回流となり、冷却水は吐出口24および吐出口24に連結する配管の壁面に沿って流れることとなる。そのため、壁面との間で摩擦損失が生じ、また摩擦により冷却水の温度が高くなり冷却効率が低下する。
そこで実施例1では、ボリュート室27に整流板28を設け、ボリュート室27の外周側の冷却水の流速を低下させるようにした。図4は、実施例1の整流板28を設けたときのボリュート室27内の冷却水の流れを示す図である。実施例1の整流板28は、上流側端部28aがボリュート室27の幅方向中間点よりも外周側に位置し、下流側端部28bがボリュート室27の幅方向中間点よりも内周側に位置している。つまり、ボリュート室27の外周側の流れは、狭い入口から入って広い出口から出ることとなり流速は減少する。一方、ボリュート室27の外周側の流れは、広い入口から入って狭い出口から出ることとなり流速は増加する。そのため、ボリュート室27の吐出口連結部27aでは、冷却水の外周側の流れと内周側の流れとが打ち消し合い、旋回流の発生を抑制することができる。これにより、吐出口24および吐出口24に連結する配管の壁面との間で生じる摩擦損失を低減し、また冷却水の温度上昇を抑制することができるため、ポンプ効率を向上させることができる。
また整流板28を、ボリュート室27の舌部21aの端部よりも下流側に設けた。これにより、整流板28の長さを短くし、流路抵抗を小さくすることができ、ポンプ効率を向上させることができる。 [Action]
FIG. 3 is a view showing the flow of cooling water in the volute chamber 27 when the rectifying plate 28 is not provided. The cooling water sucked from the suction port 23 by the rotation of the impeller 3 is sent to the volute chamber 27 by centrifugal force and flows in the same direction as the rotation direction of the impeller 3. At this time, the flow rate on the outer peripheral side of the volute chamber 27 is faster than the flow rate on the inner peripheral side. Therefore, in the discharge port connecting portion 27a of the volute chamber 27, a swirl flow swirling from the outer peripheral side toward the inner peripheral side, and the cooling water flows along the wall surface of the discharge port 24 and the pipe connected to the discharge port 24. . Therefore, friction loss occurs with the wall surface, and the temperature of the cooling water increases due to friction, resulting in a decrease in cooling efficiency.
Therefore, in the first embodiment, the rectifying plate 28 is provided in the volute chamber 27, and the flow rate of the cooling water on the outer peripheral side of the volute chamber 27 is reduced. FIG. 4 is a diagram illustrating the flow of cooling water in the volute chamber 27 when the rectifying plate 28 of the first embodiment is provided. In the rectifying plate 28 of the first embodiment, the upstream end 28a is positioned on the outer peripheral side of the intermediate point in the width direction of the volute chamber 27, and the downstream end 28b is on the inner peripheral side of the intermediate point in the width direction of the volute chamber 27. Is located. That is, the flow on the outer peripheral side of the volute chamber 27 enters from the narrow inlet and exits from the wide outlet, and the flow velocity decreases. On the other hand, the flow on the outer peripheral side of the volute chamber 27 enters from a wide inlet and exits from a narrow outlet, and the flow velocity increases. Therefore, in the discharge port connecting portion 27a of the volute chamber 27, the flow on the outer peripheral side of the cooling water and the flow on the inner peripheral side cancel each other, and the generation of the swirling flow can be suppressed. As a result, the friction loss generated between the discharge port 24 and the wall surface of the pipe connected to the discharge port 24 can be reduced, and the temperature rise of the cooling water can be suppressed, so that the pump efficiency can be improved.
Further, the rectifying plate 28 is provided on the downstream side of the end portion of the tongue portion 21a of the volute chamber 27. Thereby, the length of the rectifying plate 28 can be shortened, the flow path resistance can be reduced, and the pump efficiency can be improved.

［効果］
(1) 吸入口23と吐出口24とが形成されたポンプハウジング2と、ポンプハウジング2のインペラ収容部26に回転可能に配置され、吸入口23から冷却水を吸入し吐出口24から吐出するインペラ3と、インペラ収容部26の外周部に渦巻き状に形成され下流側が吐出口24につながるボリュート室27と、ボリュート室27の下流側と上流側とを区切る舌部21aと、ボリュート室27の舌部21aの端部よりも下流側に設けられ、ボリュート室27の外周側の冷却水の流速を低下させる整流板28と、を備えた。
よって、ボリュート室27の吐出口連結部27aでは、冷却水の外周側の流れと内周側の流れとが打ち消し合い、旋回流の発生を抑制することができる。
(2) 整流板28の上流側端部28aは、ボリュート室27の幅方向の中間点よりも外周側に位置し、整流板28の下流側端部は28b、ボリュート室27の幅方向の中間点よりも内周側に位置するようにした。
よって、整流板28によってボリュート室27の外周側の流速を低下させることができ、ボリュート室27の吐出口連結部27aでは、冷却水の外周側の流れと内周側の流れとが打ち消し合い、旋回流の発生を抑制することができる。 [effect]
(1) The pump housing 2 in which the suction port 23 and the discharge port 24 are formed, and the impeller accommodating portion 26 of the pump housing 2 are rotatably disposed, and the cooling water is sucked from the suction port 23 and discharged from the discharge port 24. The impeller 3, a volute chamber 27 formed in a spiral shape on the outer periphery of the impeller accommodating portion 26, the downstream side connecting to the discharge port 24, a tongue 21a separating the downstream side and the upstream side of the volute chamber 27, and the volute chamber 27 A rectifying plate 28 provided on the downstream side of the end of the tongue 21a and reducing the flow rate of the cooling water on the outer peripheral side of the volute chamber 27.
Therefore, in the discharge port coupling portion 27a of the volute chamber 27, the flow on the outer peripheral side and the flow on the inner peripheral side of the cooling water cancel each other, and the generation of the swirling flow can be suppressed.
(2) The upstream end 28a of the rectifying plate 28 is positioned on the outer peripheral side of the intermediate point in the width direction of the volute chamber 27, the downstream end of the rectifying plate 28 is 28b, and the intermediate in the width direction of the volute chamber 27. It was located on the inner circumference side of the point.
Therefore, the flow velocity on the outer peripheral side of the volute chamber 27 can be reduced by the rectifying plate 28, and at the discharge port connecting portion 27a of the volute chamber 27, the flow on the outer peripheral side and the flow on the inner peripheral side cancel each other. Generation of swirling flow can be suppressed.

〔実施例2〕
実施例2の電動ウォータポンプ1について説明する。実施例1と同じ構成については同一の符号を付して説明を省略する。図5は電動ウォータポンプ1のポンプカバー22を取り外した状態の図である。
吐出口連結部27aの側面からボリュート室27内に延びる整流板28を設けた。これにより、吐出口連結部27aにおいて外周側から内周側に向かう流れを阻害することができ、旋回流の発生を抑制することができる。
［効果］
(3) 整流板28を、ボリュート室27の吐出口連結部27aの側面からボリュート室27内に延びるように形成した。
よって、吐出口連結部27aにおいて外周側から内周側に向かう流れを阻害することができ、旋回流の発生を抑制することができる。 (Example 2)
An electric water pump 1 according to a second embodiment will be described. The same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted. FIG. 5 is a view of the electric water pump 1 with the pump cover 22 removed.
A rectifying plate 28 extending from the side surface of the discharge port connecting portion 27a into the volute chamber 27 was provided. Thereby, the flow which goes to the inner peripheral side from the outer peripheral side can be inhibited in the discharge port connection part 27a, and generation | occurrence | production of a swirling flow can be suppressed.
[effect]
(3) The rectifying plate 28 is formed so as to extend into the volute chamber 27 from the side surface of the discharge port connecting portion 27a of the volute chamber 27.
Therefore, it is possible to inhibit the flow from the outer peripheral side to the inner peripheral side in the discharge port connecting portion 27a, and it is possible to suppress the generation of the swirling flow.

〔他の実施例〕
以上、本発明を実施例1および実施例2に基づいて説明してきたが、各発明の具体的な構成は実施例1および実施例2に限定されるものではなく、発明の要旨を逸脱しない範囲の設計変更等があっても、本発明に含まれる。 [Other Examples]
As described above, the present invention has been described based on the first embodiment and the second embodiment. However, the specific configuration of each invention is not limited to the first and second embodiments and does not depart from the gist of the present invention. Such design changes are included in the present invention.

1 電動ウォータポンプ
3 インペラ
21a 舌部
23 吸入口
24 吐出口
26 インペラ収容部
27 ボリュート室
28 整流板 1 Electric water pump
3 Impeller
21a Tongue
23 Suction port
24 Discharge port
26 Impeller housing
27 Volute room
28 Rectifier plate

Claims (3)

吸入口と吐出口とが形成されたポンプハウジングと、
該ポンプハウジングのインペラ収容部に回転可能に配置され、前記吸入口から冷却水を吸入し前記吐出口から吐出するインペラと、
前記インペラ収容部の外周部に渦巻き状に形成され下流側が前記吐出口につながるボリュート室と、
該ボリュート室の下流側と上流側とを区切る舌部と、
前記ボリュート室の前記舌部の端部よりも下流側に設けられ、前記ボリュート室の外周側の冷却水の流速を低下させる整流板と、
を備えたことを特徴とするウォータポンプ。 A pump housing having a suction port and a discharge port;
An impeller that is rotatably arranged in an impeller accommodating portion of the pump housing, sucks cooling water from the suction port, and discharges it from the discharge port;
A volute chamber formed in a spiral shape on the outer periphery of the impeller accommodating portion and connected downstream to the discharge port;
A tongue that separates the downstream side and the upstream side of the volute chamber;
A rectifying plate that is provided on the downstream side of the end of the tongue of the volute chamber and reduces the flow rate of cooling water on the outer peripheral side of the volute chamber;
A water pump comprising: 請求項1に記載のウォータポンプにおいて、
前記整流板の上流側端部は、前記ボリュート室の幅方向の中間点よりも外周側に位置し、前記整流板の下流側端部は、前記ボリュート室の幅方向の中間点よりも内周側に位置することを特徴とするウォータポンプ。 In the water pump according to claim 1,
The upstream end of the current plate is located on the outer peripheral side of the intermediate point in the width direction of the volute chamber, and the downstream end of the current plate is on the inner periphery of the intermediate point in the width direction of the volute chamber. Water pump characterized by being located on the side. 請求項1に記載のウォータポンプにおいて、
前記整流板は、前記ボリュート室の最下流部の側面からボリュート室内に延びるように形成したことを特徴とするウォータポンプ。 In the water pump according to claim 1,
The water pump is characterized in that the current plate is formed so as to extend from the side surface of the most downstream portion of the volute chamber into the volute chamber.
JP2013196493A 2013-09-24 2013-09-24 Electrically-driven water pump Pending JP2015063900A (en)

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JP2013196493A JP2015063900A (en) 2013-09-24 2013-09-24 Electrically-driven water pump
US14/430,349 US20160258444A1 (en) 2013-09-24 2014-07-14 Water Pump
DE112014000220.8T DE112014000220T5 (en) 2013-09-24 2014-07-14 water pump
CN201480002182.4A CN104718381A (en) 2013-09-24 2014-07-14 Water pump
PCT/JP2014/068661 WO2015045569A1 (en) 2013-09-24 2014-07-14 Water pump

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EP4008907B1 (en) 2019-09-03 2024-06-12 Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd. Heating pump and cleaning device with same
CN112443487A (en) * 2019-09-03 2021-03-05 广东美的白色家电技术创新中心有限公司 Pump with heating device and cleaning device

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