CN111425409B - 一种内部液冷隔离式盘式无刷电子水泵 - Google Patents

一种内部液冷隔离式盘式无刷电子水泵 Download PDF

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CN111425409B
CN111425409B CN202010358544.0A CN202010358544A CN111425409B CN 111425409 B CN111425409 B CN 111425409B CN 202010358544 A CN202010358544 A CN 202010358544A CN 111425409 B CN111425409 B CN 111425409B
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stator
shaft
disc
rotor
cavity
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CN111425409A (zh
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李靖祥
张艺铭
董国栋
陈雨洋
黄中生
马妍
赵升吨
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Xian Jiaotong University
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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
    • 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
    • F04D13/064Details of the magnetic circuit
    • 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
    • F04D13/0646Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working fluid
    • 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
    • F04D13/0693Details or arrangements of the wiring
    • 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
    • F04D29/04Shafts or bearings, or assemblies thereof
    • F04D29/043Shafts
    • 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
    • F04D29/18Rotors
    • F04D29/20Mounting rotors on shafts
    • 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
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/2205Conventional flow pattern
    • F04D29/2222Construction and assembly
    • 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
    • F04D29/58Cooling; Heating; Diminishing heat transfer
    • F04D29/5806Cooling the drive system
    • 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
    • F04D29/58Cooling; Heating; Diminishing heat transfer
    • F04D29/5813Cooling the control unit
    • 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
    • F04D29/58Cooling; Heating; Diminishing heat transfer
    • F04D29/586Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/5886Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling by injection
    • 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
    • F04D29/58Cooling; Heating; Diminishing heat transfer
    • F04D29/586Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/5893Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps heat insulation or conduction
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2793Rotors axially facing stators
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/161Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225Terminal boxes or connection arrangements
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/19Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/19Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/197Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2201/00Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/03Machines characterised by aspects of the air-gap between rotor and stator

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种内部液冷隔离式盘式无刷电子水泵,包括盘式电机总成;盘式电机总成置于机壳内,在定子与转子中间平面气隙处设置隔水件隔出前腔和后腔,转子置于前腔内,定子置于后腔内;叶轮轴为叶轮与轴一体成形,前端为叶轮,后端为芯轴,转子安装在叶轮轴后端,叶轮轴内部开设有通孔作为轴腔;定子和接线盒固定连接,接线盒与后盖配合形成接线室,接线室内安装两层电路板,驱动板设置在定子中心;叶轮轴的轴中部安装有前端盖,前端盖呈现圆盘状,在圆盘上开设有过水孔与中心轴孔,前端盖两侧与泵壳及机壳相接,前端盖与泵壳配合形成水室密封;本发明使液体在前腔流动带走定子及电路板散发的热量,增加使用寿命与可靠性,具有轴向尺寸短等优点。

Description

一种内部液冷隔离式盘式无刷电子水泵
技术领域
本发明属于电子水泵领域,具体涉及一种内部液冷隔离式盘式无刷电子水泵。
背景技术
现有的电子水泵普遍采用无刷直流电机,相比有刷直流电机减少了电刷,不再产生电火花,但其电机磁通方向为径向,且轴向体积往往较大,对于轴向安装尺寸受限的情形难以满足。
无刷直流电机的气隙为圆筒状,气隙厚度均为毫米级,因而为了防水,现有内部水循环结构的电子水泵,常使用两端开口的隔水套筒或与端盖一体的“T”字型隔水套来隔离定子,前者至少需要在隔水套前后两处设置密封点,多处的密封便增加了失效的概率,并且装配精度要求较高;后者“T”字型隔水套仅需一处密封点,但是其薄壁长筒型的结构制造较为麻烦,加工易变形,成品率受影响。
电子水泵的电机以及PCB控制板在运行中会产生大量的热量,而电子水泵的结构紧凑,散热困难,传统的风冷无法满足散热需求,这限制了电子水泵的功率,影响了使用寿命和性能。
现有电子水泵的叶轮与芯轴多为分离的,需要芯轴穿过叶轮中心孔伸入泵腔,结合平键螺栓来连接配合,这样不仅零件较多,装配麻烦,同时会导致流体在叶轮中心部位受阻而降低了水泵的效率。
发明内容
为了克服上述现有技术的缺点,本发明的目的在于提供一种内部液冷隔离式盘式无刷电子水泵,增加使用寿命与可靠性,具有散热能力强、轴向尺寸短、加工装配方便的优点。
为了达到上述目的,本发明采取的技术方案为:
一种内部液冷隔离式盘式无刷电子水泵,包括泵盘式电机总成5;盘式电机总成5包括定子51、转子52、平面气隙53,泵盘式电机总成5置于机壳3内部;定子51与转子52中的平面气隙53处设置的隔水件6隔出前腔63和后腔64,转子52置于前腔63内,定子51置于后腔64内;转子52安装在叶轮轴4后端,叶轮轴4为叶轮41与芯轴42一体成形的零件,叶轮轴4前端为叶轮部分,后端为芯轴部分,叶轮轴4内部开设有通孔作为轴腔43;定子51和接线盒7连接,接线盒7与后盖9配合形成接线室73,接线室73内安装有电路板8,电路板8的接插件81穿过后盖9与外部连接。
所述的叶轮轴4的轴42中部安装有前端盖2,前端盖2呈现圆盘状,在圆盘上开设有过水孔21与中心轴孔24,前端盖2两侧与泵壳1及机壳3相接,前端盖2与泵壳1上的水室密封槽13配合形成水室密封,前段盖2与机壳3及泵壳1通过前螺栓21’固定连接。
所述的隔水件6主体呈扁平的圆盘状,隔水件6外缘右侧设有呈圆环的凸起62,凸起62与机壳3上的前腔密封槽31配合形成前腔密封,此密封是端面密封或轴向密封,隔水件6外侧与机壳3配合形成径向固定,隔水件6左端面紧贴定子51形成轴向固定。
所述的转子52呈圆盘状,轴向尺寸远小于径向尺寸,转子52的端面贴有永磁体521,转子中心开有轴孔和键槽,通过轴孔与键槽与叶轮轴4固定连接;所述的定子51为圆盘状,轴向尺寸远小于径向尺寸,端面开有齿槽512,齿槽512上缠绕有绕组511。
所述的接线盒7为两层圆筒状,第一层圆筒71一端通过螺钉与定子51固定,第二层圆筒72穿过定子51中心与隔水件6相接触定位。
所述的接线盒7的第二层圆筒72内部形成导热腔体,第二层圆筒72内部放置传热件10,电路板8散发的热量经传热件10传至隔水件6,经液体循环带走热量。
所述的传热件10是绝缘导热硅脂材质。
所述的叶轮轴4中间段套有第一轴承31’与第二轴承32’,两个轴承内圈固定于叶轮轴4上,外圈固定于前端盖2。
本发明的有益效果为:
本发明通过设置隔水件、过水孔及轴孔,使液体在前腔流动可带走定子及电路板散发的热量,增加使用寿命与可靠性;应用盘式无刷电机运行无电火花,轴向尺寸短,适用于轴向安装尺寸受限情景;叶轮与轴一体化成形,装配简单,减少水力损失。
附图说明
图1是本发明的正面剖视图。
图2是本发明正面剖视图。
图3是本发明图1中A处局部视图。
图4是本发明图1中前端盖2的剖视图。
图5是本发明盘式电机总成5的示意图。
图6是本发明的外观视图。
图7是本发明的接线盒7、电路板8、后盖9、传热件10剖视图。
具体实施方式
现结合实施例和附图附图对本发明作进一步说明。
如图1、图2、图7所示,一种内部液冷隔离式盘式无刷电子水泵,包括盘式电机总成5,盘式电机总成5包括转子52、定子51、平面气隙53;定子51与转子52中间的平面气隙53处设有隔水件6,隔水件6的凸起62与机壳3内壁配合隔出前腔63和后腔64;转子52置于前腔63内,定子51置于后腔64内;转子52安装在叶轮轴4后端,叶轮轴4为叶轮41与轴42一体成形的零件,叶轮轴4前端为叶轮部分,后端为芯轴,叶轮轴4内部开设有通孔作为轴腔43;定子51和接线盒7连接,接线盒7置于水泵的后侧,接线盒7与后盖9配合形成接线室73,接线室73内安装有电路板8,电路板8的接插件81穿过后盖9与外部连接。
如图1、图2、图4所示,叶轮轴4的轴42中部安装有前端盖2,前端盖2呈现圆盘状,在圆盘上开设有过水孔21与中心轴孔24,过水孔21形状不唯一,可以是圆孔、扇形、方形等常见易加工形状,且根据前腔63内所需冷却流量不同,开设过水孔21尺寸有相应变化,前端盖2外缘设有的第一凸台22与泵壳1互相配合形成水室密封槽13,水室密封槽13加入水室密封圈11’便能起到密封泵壳1内流动液体的作用;前端盖2设有的第二凸台23用于与机壳3右端面定位,前端盖2两侧与泵壳1及机壳3相接,利用前螺栓21’连接紧固。
所述的前端盖2与机壳3可以一体化成形,这样能减少了密封点,减少了零件的数量与装配难度。
如图1、图2所示,所述的隔水件6主体呈扁平的圆盘状,在隔水件6外缘右侧设有一圈圆环状的凸起62,隔水件6左端面紧贴定子51一端面形成轴向定位与固定;如图1、图3所示,所述的凸起62在径向与机壳3内壁面配合形成径向定位,所述的凸起62和定位凸起33连接形成周向定位,在前腔密封槽31内填入前腔密封圈12’,凸起62在轴向与前腔密封槽31互相配合形成对前腔63的静密封。
所述的隔水件6与机壳3可以一体成形,这样减少了零件数量和装配难度,并且不再需要前腔63的密封,除非隔水件6结构遭到破坏,密封性能一直有保证。
如图1、图2、图4、图5所示,所述的转子52呈圆盘状,其轴向尺寸远小于径向尺寸,其转子铁心522的一侧端面上贴有永磁体521,转子中心开有轴孔,通过轴孔与叶轮轴4进行轴孔配合,转子52与叶轮轴4可选用各常规连接方式,图1中通过键槽与叶轮轴4进行键连接;所述的定子51为圆盘状,定子51的轴向尺寸远小于径向尺寸,在定子51的一侧端面开有齿槽512,齿槽512上缠绕有绕组511。
电子水泵的液体主循环为从泵壳入口11流入,经过叶轮轴4的叶轮41部分后,从泵壳出水口12流出;内部液冷循环为液体从水室流经过水孔21进入前腔63,再经过平面气隙53,流经隔水件6的右端面,能带走与隔水件6紧贴的定子51所产生与传导的热量;最后通过叶轮轴的轴腔43重回水室,完成内部液冷循环,这样有效防止定子生热过高、对性能甚至寿命产生影响。
如图1、图2、图6、图7所示,所述的接线盒7为两层阶梯圆筒状,第一层圆筒71与机壳3使用后螺栓22’连接,在后腔密封槽32内置入后腔密封圈13’,然后第一层圆筒71的右端面与机壳3便能配合形成后腔的密封,第一层圆筒71的右侧的定子51与第一层圆筒71通过定位螺栓23’连接固定;第二层圆筒72穿过定子51中心与隔水件6的左端面相接触定位;如图1所示,所述的电路板8可设置为前板和后板的双层结构,后板为热量耗散较少的带有接插件81的主控板82,前板为产生大量热量的驱动板83,主控板82置于第一层圆筒71内部,驱动板83置于第二层圆筒72内部,这样依据发热量划分设计,有效避免主控板82的损坏。
在第二层圆筒72内部放置传热件10,驱动板83所散发的热量可经传热件10与接线盒7传至隔水件6,经上述内部液冷循环带走驱动板83的热量,这样能快速带走电路板8发热严重部分的热量,有利于提升电路板8的可靠性。
所述的传热件10是绝缘导热硅脂材质。
如图1、图2所示由于转子52轴向长度短,因此采用双轴承悬臂支撑方式,在叶轮轴4中间段套有第一轴承31’与第二轴承32’,起支撑作用,两个轴承的内圈固定于叶轮轴4上,轴承外圈固定于前端盖2的中心轴孔24,其固定形式可以是多种固定形式,比如图1中的轴肩44和挡圈固定。
在本发明的描述中,需要理解的是,术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制.在本发明的描述中,除非另有说明,“多个”的含义是两个或两个以上。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对发明专利范围的限制.应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。

Claims (5)

1.一种内部液冷隔离式盘式无刷电子水泵,包括泵盘式电机总成(5),其特征在于:盘式电机总成(5)包括转子(52)、定子(51)、平面气隙(53),泵盘式电机总成(5)置于机壳(3)内部;定子(51)与转子(52)中间平面气隙(53)处设置的隔水件(6)隔出前腔(63)和后腔(64),转子(52)置于前腔(63)内,定子(51)置于后腔(64)内;转子(52)安装在叶轮轴(4)后端,叶轮轴(4)为叶轮(41)与轴(42)一体成形的零件,叶轮轴(4)前端为叶轮部分,后端为芯轴,叶轮轴(4)内部开设有通孔作为轴腔(43);定子(51)和接线盒(7)连接,接线盒(7)与后盖(9)配合形成接线室(73),接线室(73)内安装有电路板(8),电路板(8)的接插件(81)穿过后盖(9)与外部连接;
所述的叶轮轴(4)的轴(42)中部安装有前端盖(2),前端盖(2)呈现圆盘状,在圆盘上开设有过水孔(21)与中心轴孔(24),前端盖(2)两侧与泵壳(1)及机壳(3)相接,前端盖(2)与泵壳(1)配合形成水室密封,前 端 盖(2)与机壳(3)及泵壳(1)固定连接;
所述的隔水件(6)主体呈扁平的圆盘状,隔水件(6)外缘右侧设有呈圆环的凸起(62),凸起(62)与机壳(3)配合形成前腔密封,此密封是端面密封或轴向密封,隔水件(6)外侧与机壳(3)配合形成径向固定,隔水件(6)左端面紧贴定子(51)形成轴向固定;
所述的转子(52)呈圆盘状,轴向尺寸远小于径向尺寸,转子(52) 的端面贴有永磁体(521),转子中心开有轴孔和键槽,通过轴孔与键槽与叶轮轴(4)固定连接;所述的定子(51)为圆盘状,轴向尺寸远小于径向尺寸,端面开有齿槽(512),齿槽(512)上缠绕有绕组(511);
所述的接线盒(7)为两层圆筒状,第一层圆筒(71)一端通过螺钉与定子(51)固定,第二层圆筒(72)穿过定子(51)中心与隔水件(6)相接触定位;
所述的接线盒(7)的第二层圆筒(72)内部形成导热腔体,第二层圆筒(72)内部放置传热件(10),电路板(8)散发的热量经传热件(10)传至隔水件(6),经液体循环带走热量;
所述的电路板(8)设置为前板和后板的双层结构,后板为热量耗散少的带有接插件(81)的主控板(82),前板为产生大量热量的驱动板(83),主控板(82)置于第一层圆筒(71)内部,驱动板(83)置于第二层圆筒(72)内部。
2.根据权利要求1所述的一种内部液冷隔离式盘式无刷电子水泵,其特征在于:所述的前端盖(2)与机壳(3)一体成形。
3.根据权利要求1所述的一种内部液冷隔离式盘式无刷电子水泵,其特征在于:所述的隔水件(6)与机壳(3)一体成形。
4.根据权利要求1所述的一种内部液冷隔离式盘式无刷电子水泵,其特征在于:所述的传热件(10)是绝缘导热硅脂材质。
5.根据权利要求1所述的一种内部液冷隔离式盘式无刷电子水泵,其特征在于:所述的叶轮轴(4)中间段套有第一轴承(31’) 与第二轴承(32’),两个轴承内圈固定于叶轮轴(4)上,外圈固定于前端盖(2)。
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