WO2014089978A1 - 一种水冷电机 - Google Patents

一种水冷电机 Download PDF

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Publication number
WO2014089978A1
WO2014089978A1 PCT/CN2013/080940 CN2013080940W WO2014089978A1 WO 2014089978 A1 WO2014089978 A1 WO 2014089978A1 CN 2013080940 W CN2013080940 W CN 2013080940W WO 2014089978 A1 WO2014089978 A1 WO 2014089978A1
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WO
WIPO (PCT)
Prior art keywords
water
casing
water inlet
cooled motor
outer cover
Prior art date
Application number
PCT/CN2013/080940
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English (en)
French (fr)
Inventor
刘伟才
黄建平
Original Assignee
上海亿力电器有限公司
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Filing date
Publication date
Application filed by 上海亿力电器有限公司 filed Critical 上海亿力电器有限公司
Priority to JP2015544323A priority Critical patent/JP5920907B2/ja
Priority to EP13863420.9A priority patent/EP2903142B1/en
Priority to BR112014026297A priority patent/BR112014026297A2/pt
Priority to US14/385,899 priority patent/US9472995B2/en
Publication of WO2014089978A1 publication Critical patent/WO2014089978A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets

Definitions

  • the present invention relates to a water-cooled motor, and more particularly to a water-cooled motor for an electric pump unit of a high-pressure cleaner. Background technique
  • the motor cooling method is divided into air cooling and water cooling. With its excellent cooling effect, the water cooling method enables the motor to output higher power at the same cost or the motor material can be used less and cost less at the same output power, and the water-cooled motor noise is also air-cooled. Low, so water-cooled motors have high economic value and practical value in various industries.
  • the existing water-cooled motor used in the electric pump unit has several structural forms: one is to embed a spiral hollow aluminum tube in the aluminum die-casting of the motor casing, and the water is cooled on the spiral hollow aluminum tube to cool the motor, but the structure The process is more complicated and the cost is higher; the other is the aluminum profile described in the Chinese patents of CN201450384 U and CN 201937382 U, which are hollow double-layered cylinder structure and evenly distributed between the two walls. There is a water barrier, an end cover is arranged at each end of the cylinder, and the end cover is provided with a structure such as a water tank.
  • the structure has many components, the structure is complicated, the sealing effect is poor, the motor 4 is easy to enter the water, and there is a major safety hazard.
  • the water flow channel has a simple structure and a low cost, but the plastic outer cover mold structure requires a plurality of inner cores, resulting in a complicated mold structure, and the injection molding production is easy to occur.
  • "z" shape design such that the liquid passage occurs a plurality of times to turn 180 degrees in the flow direction, at the same cross section, so that the liquid flow will be reduced.
  • the Chinese patent with the publication number CN102510158A proposes a water-cooled motor designed with a spiral water tank.
  • a plurality of spiral water tanks 2.0 are processed on the outer circumferential surface of the inner casing 2 of the water-cooled motor, and a circular sump is processed at both ends of the outer circumferential surface, one end is a first sump 2.1, and the other end is The second sump 2.2; each spiral water tank 2.0 rotates several times in the axial direction and is directly connected with the sump at both ends; two water sumpes each have two water blocking plates 2.3, the first set The water tank 2.1 is divided into a first water inlet sump 2.11 and a first water sump 2.12, and the second sump 2.2 is divided into a second water sump 2.21 and a second water sump 2.22; the first water sump 2.11 and The second water collecting sump 2.22 is connected, and the two water collecting tanks are respectively connected with the first water inlet joint 2.1 ⁇ and the second water outlet joint 2.22
  • the base is made of metal material. Because the thread is arranged on the inner frame and the water blocking plate and the base are integrated, the manufacturing process of the base must be pressure cast. The process can be realized, and the products produced by the pressure casting process are prone to generate pores, that is, the structure of the casting is not dense. The presence of pores causes water in the flow path to penetrate into the motor, causing leakage and electric shock.
  • the invention provides a water-cooled motor to solve the problems of complicated structure, poor sealing performance, low safety and high cost of the water-cooled motor in the prior art.
  • the present invention provides a water-cooled motor, comprising: a casing for accommodating at least a stator and a rotor, the casing including a bottom, a side wall and an opening opposite to the bottom, a side wall having a step; a cover disposed on a side wall of the casing, the outer The cover includes a double-headed thread disposed on an inner surface thereof to provide a water inlet passage and a water outlet passage between the outer cover and the casing; a water inlet, disposed on the outer casing and connected to the water inlet passage a first end; and a water outlet adjacent to the water inlet disposed on the outer casing and connected to the second end of the water outlet passage, wherein the second end of the water inlet passage passes through the step Connected to the first end of the water outlet channel.
  • the motor cooling structure further includes a water barrier mounted to the water inlet for preventing water flowing in from the water inlet from flowing directly to the water outlet.
  • the water inlet is designed to prevent rotation of the water barrier relative to the outer casing when the water barrier is mounted to the water inlet.
  • the water inlet and the water outlet are located on a side of the outer casing adjacent to the opening of the casing.
  • the water-cooled motor further includes: a first excess joint for connecting the water inlet to an external inlet pipe; and a second excess joint for the water outlet Connect to an external outlet pipe.
  • the casing has an everted flange at the opening.
  • the water-cooled motor further includes: a first sealing ring disposed between the first end of the outer cover and the casing; and a second sealing ring disposed on the outer cover Between the two ends and the casing.
  • the casing is made of a metal material, and the outer casing is made of a plastic material. According to a preferred embodiment, the casing is integrally formed.
  • the water-cooled motor provided by the present invention isolates two water flows in the space between the outer cover and the casing by using a screw on the inner surface of the outer cover. Channel; By forming a step on the side wall of the casing, the two water flow passages are connected without providing an additional connecting pipe, thereby greatly simplifying the product structure, and the design of the water inlet and the water outlet on the same side is also The product structure is more compact.
  • the structural design of the present invention enables the casing production process to be produced by a process of sheet metal forming, the sheet metal stretched product organization Densification avoids defects in the product produced by the pressure casting process that have pores that cause water in the motor. Furthermore, the structural design of the present invention allows the threads to be placed on the outer cover and produced by a plastic mold forming process, which greatly reduces the manufacturing cost.
  • the water-cooled motor of the present invention can effectively prevent the water flow from flowing directly from the water inlet to the water outlet by adding a simple water-blocking ring, and on the other hand, the mold structure of the outer cover can be simplified, and the manufacturing cost can be greatly reduced.
  • FIG. 1 is a schematic structural view of a water-cooled machine base in the prior art
  • Figure 2 is a schematic view showing the structure of an electric pump unit using the water-cooled motor of the present invention
  • Figure 3 is an exploded view of Figure 2;
  • Figure 4 is a cross-sectional view of Figure 2;
  • Figure 5 is a partial enlarged view of Figure 4.
  • Figure 6 is a cross-sectional view of a cover of an embodiment of the present invention.
  • FIG. 7 is a schematic view of a water flow path according to an embodiment of the present invention. detailed description
  • the water-cooled motor provided by the present invention is particularly suitable for an electric pump unit, as shown in FIGS. 2 to 4, which is a schematic view of an electric pump unit using the water-cooled motor of the present invention, the electric pump unit including the oppositely disposed casing 10 and The end cover 20 is disposed in the space formed by the casing 10 and the end cover 20, the stator 30, the rotor 40 and the two bearings 50.
  • the two bearings 50 are respectively fixed to the two ends of the rotor 40, and the outside of the stator 30
  • the circle is in an interference fit with the inner wall of the casing 10.
  • the side wall of the casing 10 is formed with The step 64, in order to axially position the stator 30 mounted within the casing 10, and on the other hand to communicate the water inlet and outlet channels of the water-cooled motor (described in more detail below).
  • the housing 10 is further provided with a cover 60.
  • the cover 60 has a water inlet 61 and a water outlet 62 disposed adjacently.
  • the inner wall of the cover 60 is further provided with a screw 63.
  • the number of turns can be adjusted according to the size of the casing 10 and the outer cover 60.
  • the bottom diameter of each of the screw teeth 63 is the same, and the screw 63 separates the water flow passage 80 from the space between the outer wall of the casing 10 and the inner wall of the outer cover 60. .
  • the outer cover 60 is made of a plastic material to ensure that the outer cover 60 is easily formed from the mold.
  • the casing 10 is formed by metal stretching and is cup-shaped.
  • the open end of the casing 10 ie, the cup end
  • a bearing chamber 51 is provided for mounting the bearing 50.
  • the step 64 divides the side wall of the casing 10 into two parts, wherein the outer diameter of the first portion near the open end is larger than the outer diameter of the second portion near the bottom end, and the outer diameter of the first portion is substantially the same as the bottom diameter of the screw 63 They are equal so that the bottom of the screw 63 can be in close contact with the side wall of the first portion.
  • the thread 63 on the inner wall of the outer cover 60 is a double-ended thread
  • the water inlet 61 on the outer cover 60 is The water outlets 62 are respectively disposed at positions close to the open end of the casing 10, and are respectively communicated with one ends of the two water flow passages formed by the double-headed teeth 63, and the other ends of the two water flow passages pass through the side wall of the casing 10.
  • the upper steps 64 are in communication, that is, the double-headed teeth 63 form a water inlet passage 81 and a water outlet passage 82, respectively, and the water inlet passage 81 and the water outlet passage 82 communicate at a connecting passage 83 formed by the step 64.
  • the end of the water inlet passage 81 is axially located rearward of the starting end of the water outlet passage 82 (i.e., the right side in the drawing), but the present invention is not limited thereto. In other embodiments, the end of the water inlet passage 81 may also be located in the axial direction in front of the starting end of the water outlet passage 82 (i.e., interchanged with the position of the starting end of the water outlet passage 82), and the connecting passage formed by the step 64 as well. 83 realizes communication between the water inlet passage 81 and the water outlet passage 82.
  • the water inlet 61 is provided with a water blocking ring 65 to prevent the water flow from flowing directly from the water inlet 61 to the water outlet 62, that is, the water flow enters from the water inlet 61, and the water is blocked.
  • the coil 65 does not directly flow to the water outlet 62, but is guided into the water inlet passage 81, and spirally flows in the direction of the water inlet passage 81 until it flows to the step 64 and continues to spiral in the direction of the water outlet passage 82. Flowing, eventually flowing to the water outlet 62.
  • the water inlet 61 is shaped to be non-circular and cooperates with the shape of the water barrier 65 to prevent the water barrier 65 from rotating relative to the outer cover 60.
  • a pair of anti-rotation steps 66 may be designed at the water inlet 61.
  • the shape of the anti-rotation step 66 matches the shape of the water-blocking ring 65, so that the water-blocking ring is The 65 is placed at the rotation stop step 66 to prevent the water barrier 65 from rotating.
  • the water inlet 61 and the water outlet 62 are respectively connected to the water inlet pipe 71 and the water outlet pipe 72 through an excessive joint 70, specifically, the water inlet pipe 71 and the water outlet pipe 72.
  • the first joint 70a and the second joint 70b are respectively connected, and the third joint 70c and the fourth joint 70d are respectively connected to the water inlet 61 and the water outlet 62, and the joint is respectively provided with a third sealing ring 67 for sealing.
  • the excess joint 70 adjusts the direction of the water flow.
  • the end of the casing 10 that is in contact with the end cover 20 is provided with an everted flange 11 , specifically, the end cover 20 , the flange 11 and the cover 60 respectively
  • a plurality of matching screw holes are provided, and the end cap 20, the casing 10, and the outer cover 60 are fixed and connected by screws matched with the screw holes.
  • the two ends of the outer cover 60 connected to the casing 10 are respectively provided with a first sealing ring 12 and a second sealing ring 13, so that the The water flow path formed between the casing 10 and the outer cover 60 can communicate with the outside only through the water inlet 61 and the water outlet 62, ensuring a good sealing effect.
  • the present invention is particularly applicable to an electric pump unit of a high pressure cleaner.
  • a pump unit 90 is mounted at the front end of the motor.
  • the present invention uses the water inlet of the water pump to introduce a motor through the line 71 to cool the motor.
  • the pipeline 72 is connected to the inlet end of the pump, and after being pressurized by the pump, it is output from the outlet 91.
  • This design on the one hand, does not require a special additional water source and corresponding water pipe fittings to save the material consumption; on the other hand, the fan is eliminated by water cooling, reducing noise.
  • the water-cooled motor provided by the present invention is provided with a double-headed screw on the inner surface of the outer cover 60.
  • the teeth 63, the two water flow passages 81, 82 are separated in the space between the outer cover 60 and the casing 10; by forming the step 64 on the side wall of the casing 10, the two water flow passages 81, 82 are not provided with additional
  • the communication is achieved in the case of connecting pipes, thereby greatly simplifying the product structure, and the design in which the water inlet 61 and the water outlet 62 are on the same side also makes the product structure more compact.
  • the water-cooled motor of the present invention can effectively prevent the water flow from flowing directly from the water inlet 61 to the water outlet 62 by adding a simple water-blocking ring 65.
  • the mold structure of the outer cover 60 can be simplified, and the manufacturing is greatly reduced. cost.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

一种水冷电机，包括用于容纳至少一定子（30）和一转子（40）的机壳（10），机壳（10）的侧壁上具有台阶（64）；罩设在机壳侧壁上的外罩（60），外罩（60）内壁上形成有双头螺牙（63），以在外罩（60）和机壳（10）之间提供一进水通道（81）和一出水通道（82）；布置在外罩（60）上的进水口（61）和出水口（62），分别连接至进水通道（81）和出水通道（82）的一端，进水通道（81）和出水通道（82）的另一端通过台阶（64）相连通。

Description

一种水冷电机 技术领域
本发明涉及一种水冷电机， 尤其涉及一种用于高压清洗机的电动泵单元 的水冷电机。 背景技术
电机冷却方式分风冷、 水冷等。 水冷方式以其极好的冷却效果， 使电机 在同样的成本下能输出更高的功率或在输出同等功率下能使电机材料用的更 少、 成本更低， 并且水冷电机噪音也较风冷低， 因此水冷电机在各行业具有 较高的经济价值与实用价值。
现有的应用于电动泵单元的水冷电机的结构形式有几种： 一种是在电机 机壳铝压铸的时候嵌入螺旋空心铝管， 在螺旋空心铝管上通水使电机冷却， 但该结构工艺比较复杂，成本比较高；另一种是公开号分别为 CN201450384 U 与 CN 201937382 U的中国专利中所述的采用铝型材，其结构为中空的双层圓 筒结构， 两壁之间均布有隔水筋， 圓筒两端各装配一个端盖， 端盖上设有过 水槽等结构， 该结构零件较多， 结构复杂， 密封效果差， 电机 4艮容易进水， 存在重大的安全隐患， 且成本也较高； 还有一种是公开号为 CN101663483 A 的中国专利提供的结构， 该结构通过在塑料外罩内部注塑形成若干个筋， 在 塑料外罩和冷却壳体之间形成 "z" 形水流通道， 其结构简单、 成本较低， 但 是塑料外罩模具结构须若干个内抽芯， 导致模具结构复杂， 注塑生产容易出 故障， 且 "z" 形通路的设计使得液体在流动方向上出现多次 180度转弯， 在 相同截面的条件下， 会使得液体流量减小。
公开号为 CN102510158A的中国专利提出采用螺旋形水槽设计的水冷电 机。 参见图 1 , 该水冷电机的内机座 2外圓周面上加工有多条螺旋形水槽 2.0, 外圓周面两端处各加工一条圓环形的集水槽， 一端为第一集水槽 2.1 , 另一端 为第二集水槽 2.2; 每条螺旋形水槽 2.0沿轴向等间距旋转若干圈， 且与两端 的集水槽直接连通； 两条集水槽中分别各有两个隔水板 2.3 ,将第一集水槽 2.1 分隔成第一进水集水槽 2.11和第一出水集水槽 2.12, 将第二集水槽 2.2分隔 成第二进水集水槽 2.21和第二出水集水槽 2.22; 第一进水集水槽 2.11与第二 出水集水槽 2.22联通， 该两集水槽分别与外机座 1上的第一进水管接头 2.1 Γ 和第二出水管接头 2.22'对应连接； 第二进水集水槽 2.21 与第一出水集水槽 2.12联通,该两集水槽分别与外机座 1上的第二进水管接头 2.2Γ和第一出水管 接头 2.12'对应连接， 与外水路构成两路进水和两路出水， 形成冷却水路， 使 进水与出水沿轴向左右对称流动。
为了实现液体的流动方向相反流动， 在机座两侧分别设置了两个水管接 头 （总共四个接头）， 导致外机座的结构复杂， 加工、 装配难度高， 且容易发 生液体泄漏， 引起电机故障； 而且， 因传热的需要， 机座采用金属材料， 由 于其螺纹设置在内机座上且所述的隔水板与机座为一体结构， 使得机座的制 造工艺必须采用压力铸造的工艺才能实现， 而压力铸造工艺生产的产品又容 易产生气孔， 即铸件组织不致密。 气孔的出现使流道里的水渗入电机内部， 导致漏电、 触电。
因此， 如何在确保冷却效果均勾、 冷却效率高的同时， 提供一种结构简 单、 工艺性好， 成本低廉、 防水性好、 安全可靠的水冷电机是本领域技术人 员亟待解决的一个技术问题。 发明内容
本发明提供一种水冷电机， 以解决现有技术中的水冷电机结构复杂、 密 封性差、 安全性低以及成本较高的问题。
为解决上述技术问题， 本发明提供一种水冷电机， 包括： 一机壳， 用于 容纳至少一定子和一转子， 所述机壳包括一底部、 一侧壁和与底部相对的一 开口， 所述侧壁上具有一台阶； 一外罩， 罩设在所述机壳的侧壁上， 所述外 罩包括设置在其内表面上的双头螺牙， 以在外罩和机壳之间提供一进水通道 和一出水通道； 一进水口， 布置在所述外罩上且连接至所述进水通道的第一 端； 以及一出水口， 相邻于所述进水口布置在所述外罩上且连接至所述出水 通道的第二端， 其中， 所述进水通道的第二端通过所述台阶与所述出水通道 的第一端相连。
根据一较佳实施例， 所述电机冷却结构还包括安装至所述进水口的隔水 圈， 用于防止从进水口流入的水直接流向出水口。
根据一较佳实施例， 所述进水口设计为当所述隔水圈安装至进水口时， 能够防止所述隔水圈相对外罩旋转。
根据一较佳实施例， 所述进水口和出水口均位于外罩上靠近机壳开口的 一侧。
根据一较佳实施例， 所述的水冷电机还包括： 一第一过度接头， 用于将 所述进水口连接至一外部的进水管； 以及一第二过度接头， 用于将所述出水 口连接至一外部的出水管。
根据一较佳实施例， 所述机壳在开口处具有外翻的凸沿。
根据一较佳实施例， 所述的水冷电机还包括： 第一密封圈， 设置在所述 外罩的第一端与所述机壳之间； 以及第二密封圈， 设置在所述外罩的第二端 与所述机壳之间。
根据一较佳实施例， 所述机壳为金属材料， 所述外罩采用塑料材料。 根据一较佳实施例， 所述机壳为一体成型。
与现有技术相比， 本发明具有以下优点： 本发明提供的水冷电机， 通过 在外罩的内表面设置双头螺牙， 利用螺牙在外罩和机壳之间的空间中隔离出 两条水流通道； 通过在机壳侧壁上形成台阶， 使两条水流通道在没有设置额 外的连接管道的情况下实现连通， 从而大大简化了产品结构， 且进水口与出 水口位于同一侧的设计也使产品结构更加紧凑。 并且本发明的结构设计使得 机壳生产工艺能够利用板材拉伸成形的工艺产生， 该金属板材拉伸制品组织 致密避免了压力铸造工艺产生的制品有气孔从而导致电机内部进水的缺陷。 再者， 本发明的结构设计使螺纹设置在外罩上， 并用塑料模具成型的工艺生 产， 大大降低了制造成本。
此外， 本发明的水冷电机通过增加一个简单的隔水圈， 一方面可以有效 防止水流从进水口流入后直接流向出水口， 另一方面可使外罩的模具结构简 单， 大大降低制造成本。 附图说明
图 1为现有技术中的水冷机座的结构示意图；
图 2为采用了本发明的水冷电机的一电动泵单元的结构示意图； 图 3为图 2的爆炸图；
图 4为图 2的剖面图；
图 5为图 4的局部放大图；
图 6为本发明一具体实施方式的外罩的剖面图；
图 7为本发明一具体实施方式的水流通路示意图。 具体实施方式
为使本发明的上述目的、 特征和优点能够更加明显易懂， 下面结合附图 对本发明的具体实施方式做详细的说明。 需说明的是， 本发明附图均采用简 化的形式且均使用非精准的比例， 仅用以方便、 明晰地辅助说明本发明实施 例的目的。
本发明提供的水冷电机， 尤其适用于电动泵单元， 如图 2至图 4所示， 是采用了本发明的水冷电机的电动泵单元的示意图， 该电动泵单元包括相对 设置的机壳 10和端盖 20, 设于机壳 10与端盖 20组成的空间内的定子 30、 转子 40以及两轴承 50, 所述两轴承 50分别固定于所述转子 40的两端， 所述 定子 30的外圓与所述机壳 10的内壁过盈配合。 所述机壳 10的侧壁上形成有 台阶 64, —方面用于对安装在机壳 10内的定子 30进行轴向定位， 另一方面 用于连通水冷电机的进水通道和出水通道 (将于下文详述）。
所述机壳 10外部还设有外罩 60, 所述外罩 60上具有相邻设置的进水口 61和出水口 62, 所述外罩 60的内壁上还设有螺牙 63 , 所述螺牙 63的圈数可 根据机壳 10及外罩 60的尺寸进行调整， 各圈螺牙 63的底径相同， 由所述螺 牙 63在机壳 10外壁和外罩 60内壁之间的空间中分隔出水流通道 80。
具体地， 所述外罩 60采用塑料材料， 以确保所述外罩 60从模具成型上 容易实现。 所述机壳 10为金属拉伸成型， 且为杯状， 机壳 10的开口端 （即 杯口端）与所述端盖 20固定连接， 与所述开口端相对的一端 （即杯底端）设 有一轴承室 51 , 用于安装所述轴承 50。 所述台阶 64将机壳 10的侧壁分为两 部分， 其中靠近开口端的第一部分的外径大于靠近底端的第二部分的外径， 且第一部分的外径大致与螺牙 63的底径相等， 从而使螺牙 63的底部能与所 述第一部分侧壁紧密接触。
请参考图 2至图 4, 并重点参考图 5至图 7, 根据一较佳实施例， 所述外 罩 60内壁上的螺牙 63为双头螺牙， 所述外罩 60上的进水口 61与出水口 62 均设置在靠近机壳 10开口端的位置， 且分别与所述双头螺牙 63形成的两个 水流通道的一端相连通， 所述两个水流通道的另一端通过机壳 10侧壁上的台 阶 64相连通， 也就是说， 双头螺牙 63分别形成进水通道 81和出水通道 82, 所述进水通道 81和出水通道 82在所述台阶 64形成的连接通道 83处连通。
在图 5和图 7所示的具体实施例中， 进水通道 81的末端沿轴向位于出水 通道 82 的起始端的后方 （即图中的右侧）， 但本发明并不限于此。 在其它实 施例中， 进水通道 81的末端沿轴向也可以位于出水通道 82的起始端的前方 (即与出水通道 82起始端的位置互换）， 同样能通过台阶 64所形成的连接通 道 83实现进水通道 81与出水通道 82的连通。
较佳地， 所述进水口 61上安装有隔水圈 65 , 以防止水流从进水口 61流 入后直接流向出水口 62, 也就是说， 水流从所述进水口 61进入， 在所述隔水 圈 65的作用下不能直接流向出水口 62, 而是被引导进入进水通道 81 , 沿进 水通道 81的方向做螺旋流动， 直至流至所述台阶 64后继续沿出水通道 82的 方向做螺旋流动， 最终流向出水口 62。 较佳地， 所述进水口 61的形状设计为 非正圓， 且与隔水圈 65的形状相配合， 以防止隔水圈 65相对外罩 60旋转。 例如， 该进水口 61处可以设计一对止转台阶 66, 如图 6所示， 所述止转台阶 66的形状与所述隔水圈 65的形状相匹配， 这样， 将所述隔水圈 65置于所述 止转台阶 66处， 可防止隔水圈 65旋转。
较佳地， 请参考图 2和图 3 , 所述进水口 61和出水口 62分别通过一过度 接头 70与进水管 71和出水管 72相连接， 具体地， 所述进水管 71、 出水管 72分别与第一接头 70a和第二接头 70b相连， 第三接头 70c、 第四接头 70d 分别与所述进水口 61和出水口 62相连， 连接处分别设有第三密封圈 67进行 密封， 通过所述过度接头 70对水流的方向调节。
较佳地， 所述机壳 10与所述端盖 20相接触的一端 (即开口端）设有外 翻的凸沿 11 , 具体地， 所述端盖 20、 凸沿 11以及外罩 60上分别设有若干相 匹配的螺孔（图中未示出）， 并采用与所述螺孔相匹配的螺钉对所述端盖 20、 机壳 10以及外罩 60进行固定并连接。
较佳地， 请参考图 3、 图 4以及图 6和图 7, 所述外罩 60与所述机壳 10 相连的两端分别设有第一密封圈 12和第二密封圈 13 , 使得所述机壳 10与所 述外罩 60之间形成的水流通路只能通过所述进水口 61和出水口 62与外界连 通， 确保良好的密封效果。
较佳地， 本发明尤其适用于高压清洗机的电动泵单元， 如图 2和图 3 , 电 机前端安装有泵单元 90,本发明利用水泵的本身进水通过管路 71引入电机进 行冷却电机然后再由管路 72接入泵的进口端， 经泵增压后由出口 91输出。 这样的设计， 一方面使电机的冷却不需要专门额外的水源以及相应的水路管 件， 节省了材料消耗； 另一方面由于通过水冷省却了风扇， 降低了噪音。
综上所述， 本发明提供的水冷电机， 通过在外罩 60的内表面设置双头螺 牙 63 , 在外罩 60和机壳 10之间的空间中隔离出两条水流通道 81、 82; 通过 在机壳 10侧壁上形成台阶 64, 使两条水流通道 81、 82在没有设置额外的连 接管道的情况下实现连通， 从而大大简化了产品结构， 且进水口 61与出水口 62位于同一侧的设计也使产品结构更加紧凑。 此外， 本发明的水冷电机通过 增加一个简单的隔水圈 65 ,—方面可以有效防止水流从进水口 61流入后直接 流向出水口 62, 另一方面可使外罩 60的模具结构简单， 大大降低制造成本。
显然， 本领域的技术人员可以对发明进行各种改动和变型而不脱离本发 明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要求 及其等同技术的范围之内， 则本发明也意图包括这些改动和变型在内。

Claims

权利要求
1. 一种水冷电机， 其特征在于， 包括：
一机壳， 用于容纳至少一定子和一转子， 所述机壳包括一底部、一侧壁和 与底部相对的一开口， 所述侧壁上具有一台阶；
一外罩，罩设在所述机壳的侧壁上，所述外罩包括设置在其内表面上的双 头螺牙， 以在外罩和机壳之间提供一进水通道和一出水通道；
一进水口， 布置在所述外罩上且连接至所述进水通道的第一端； 以及 一出水口，相邻于所述进水口布置在所述外罩上且连接至所述出水通道的 第二端，
其中， 所述进水通道的第二端通过所述台阶与所述出水通道的第一端相 连。
2. 如权利要求 1所述的水冷电机， 其特征在于， 还包括安装至所述进水 口并靠近出水口侧的隔水圈， 用于防止从进水口流入的水直接流向出水口。
3. 如权利要求 2所述的水冷电机， 其特征在于， 所述进水口设计为当所 述隔水圈安装至进水口时， 能够防止所述隔水圈相对外罩旋转。
4. 如权利要求 1所述的水冷电机， 其特征在于， 所述进水口和出水口均 位于外罩上靠近机壳开口的一侧。
5. 如权利要求 1所述的水冷电机， 其特征在于， 还包括：
一第一过度接头， 用于将所述进水口连接至一外部的进水管； 以及 一第二过度接头， 用于将所述出水口连接至一外部的出水管。
6. 如权利要求 1所述的水冷电机， 其特征在于， 所述机壳在开口处具有 外翻的凸沿。
7. 如权利要求 1所述的水冷电机， 其特征在于， 还包括：
第一密封圈， 设置在所述外罩的第一端与所述机壳之间； 以及
第二密封圈， 设置在所述外罩的第二端与所述机壳之间。
8. 如权利要求 1所述的水冷电机， 其特征在于， 所述机壳为金属材料, 所述外罩为塑料材料。
9. 如权利要求 1所述的水冷电机， 其特征在于， 所述机壳为一体成型。
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CN116054485A (zh) * 2022-12-27 2023-05-02 徐州沃德桑拿设备有限公司 一种机电设备散热用散热装置
CN116054485B (zh) * 2022-12-27 2023-11-07 徐州沃德桑拿设备有限公司 一种机电设备散热用散热装置

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US9472995B2 (en) 2016-10-18
JP2015535677A (ja) 2015-12-14
BR112014026297A2 (pt) 2017-06-27
CN103023219A (zh) 2013-04-03
EP2903142A1 (en) 2015-08-05
CN103023219B (zh) 2015-05-13
US20150048700A1 (en) 2015-02-19

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