CN112796994A - 流体泵及用于制造流体泵的方法 - Google Patents
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- H02K1/12—Stationary parts of the magnetic circuit
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- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
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Abstract
描述了一种流体泵(10),特别是用于向离合器致动器、传动系的齿轮箱致动器、润滑系统和/或冷却系统供应的油泵,所述流体泵具有带有定子(22)和转子(24)的电驱动单元(18)。转子(24)布置在定子(22)的内部,并且径向向内界定定子室(22a)的内壁(30)具有至少一个壁部(30a),其接合在存在于两个周向相邻的定子段(22b)之间的定子(22)的分配的径向凹陷(22c)中。此外,提出了一种用于制造流体泵(10)的方法。
Description
技术领域
本发明涉及一种流体泵,特别是用于向离合器致动器、传动系的齿轮箱致动器、润滑系统和/或冷却系统供应的油泵,其具有包括定子和可绕转子轴线旋转的转子的电驱动单元,其中定子布置在驱动壳体的环形定子室中,转子布置在与定子室分开并且位于定子室内部的转子室中。
本发明还涉及一种用于制造流体泵、特别是油泵的方法,该流体泵具有电驱动单元,其包括定子和可绕转子轴线旋转的转子。
背景技术
这种流体泵从现有技术中是已知的,并且通常装配在机动车辆、特别是汽车上。它们通常也被称为电动流体泵。
例如,EP3179106A1公开了一种已知的流体泵。
因此,可以以低成本和始终如一的高质量生产特别是在汽车领域所需的大量产品,通常根据需要简单地生产这种流体泵。特别地,转子和定子必须可靠且精确地布置在流体泵内部,以便能够确保电驱动单元的高效率和长使用寿命。
发明内容
在这种情况下,本发明的目的是提供一种流体泵,其可以特别容易地安装。特别地,电驱动单元的部件必须能够精确且容易地安装。
该目的通过最初描述的类型的流体泵来实现,其中径向向内界定定子室的内壁具有至少一个壁部,其接合在存在于两个周向相邻的定子段之间的定子的分配的径向凹陷中。定子段可以包括定子极或定子绕组。以这种方式,定子被固定以防止相对于壁部扭转。因此,其在定子室内部处于预定位置。在此,壁部和定子在周向方向上形成形状配合连接。在轴向方向上,定子可以容易地相对于内壁移动。因此,定子可以容易且精确地安装在流体泵内部。
在这种情况下,壁部也可以被描述为径向突起。
因此,本发明的基本思想是使用径向凹陷,其通常存在于单独定子段之间的定子中,以用于旋转定位在驱动壳体内部。
优选地,转子容纳在转子室中,该转子室与容纳在定子室中的定子流体密封地分离。转子室可以由转子罐的内部形成。这种转子罐是具有基本呈圆筒形外壳(也可以称为罐壁)的壁部和轴向地封闭圆筒形外壳的壁部的基部或罐基的元件。这种转子罐在驱动单元内将所谓的湿区域(即与待泵送的流体接触的区域)和干区域(即不与待泵送的流体接触的区域)分开。在此,转子位于湿区域中,而定子位于干区域中。
根据一个实施例,径向向内界定定子室的内壁具有多个周向分布的壁部,其中每个壁部接合在存在于周向相邻的定子段之间的定子的分配的径向凹陷中。因此,定子的旋转定位是通过多对径向凹陷和壁部实现的。因此,定子特别可靠且精确地定位。
一个壁部可以是内壁的一个径向凸起,或者多个壁部可以是内壁的多个径向凸起,特别是其中径向凸起在内壁的整个轴向长度上延伸。与应用到内壁上的径向突起相比,径向凸起易于制造并节省材料。因此,可以容易且廉价地制造这种流体泵。
有利地,一个或多个径向凸起在面向转子室的内壁的一侧上形成一个或多个对应的径向凹部。以此方式,可以以最少的材料使用来制造中间壁。特别地,为此可以使用成型或模制生产过程。内壁的厚度在此可以保持恒定,这对于生产是有利的。
基本轴向延伸的冷却剂通道形成在每个壁部中,特别是其中冷却剂通道在转子室的方向上径向敞开。轴向方向由转子轴线定义。因此,可以以简单紧凑的方式将冷却剂通道布置在流体泵的内部。流体泵可通过冷却剂通道有效地冷却,因为它们基本穿过驱动单元的核心区域。如果冷却通道在转子室的方向上径向敞开,则冷却剂可以从冷却剂通道流入转子室的内部,特别是在转子罐的整个轴向长度上。以这种方式,转子可以特别是在其整个轴向长度上被冷却剂润湿,由此其被有效地冷却。
优选地,壁部在其径向外侧上是圆形的,特别是在其整个轴向长度上是圆形的。因此,在轴向截面中,壁部在其径向外端处形成为部分圆。因此,壁部易于通过标准的生产方法和机器来生产。另外,因此可以为任何冷却通道提供较大的流动横截面。此外,由于部分圆形的形式,冷却通道可以在较大的面积上与邻近壁部的定子室热相互作用。这尤其适用于流动横截面。这样可以对流体泵进行有效而可靠的冷却。
根据变型,定子室和转子室是罐状的,其中定子室和转子室在相对的轴向侧敞开。因此,可以容易地限定定子室和转子室。在优选实施例中,定子室和转子室由具有所谓的双罐结构的单个部件提供。这确保流体泵的紧凑结构。
而且,定子可以通过浇铸材料嵌入定子室中。因此,将定子无间隙地安装在其限定的安装位置。因此,定子在定子室内部的运动不再可能。这提供了可靠起作用且耐用的流体泵。
在变型中,流体泵是齿轮泵,特别是环形齿轮泵。环形齿轮泵也称为摆线泵且是一种特别强大同时具有紧凑结构的齿轮泵。
另外,该目的通过一种最初所述的类型的方法来实现,该方法包括以下步骤:
a)提供具有围绕定子的圆周分布的多个定子段的定子,其中径向凹陷形成在相应的相邻定子段之间,
b)为驱动壳体提供定子室,其中定子室的壁部对应于径向凹陷并且相对于界定定子室的内壁的基础轮廓突出,
c)相对于驱动壳体对准定子,以使每个径向凹陷在轴向方向上与对应的壁部相对,
d)将定子插入驱动壳体中,其中突出的壁部接合在分配的径向凹陷中。
定子因此容易且快速地以精确的旋转位置安装在驱动壳体中。
根据一个实施例,定子被封装在定子室内。因此,定子固定在定子室的内部,并且即使在运行期间也不能再在其中移动。因此,流体泵可靠地起作用。
附图说明
下面参考附图中所示的各种示例性实施例说明本发明。附图示出了:
-图1以外部透视图示出了根据本发明的流体泵,
-图2描绘了沿轴向平面剖切的图1中的流体泵,以及
-图3是来自图2的流体泵的细节III。
具体实施方式
图1示出了流体泵10,在所示的实施例中,该流体泵10形成为用于供应离合器致动器的油泵。
同时,流体泵10也适于将油供应至传动系的齿轮箱致动器、冷却系统和/或润滑系统。
流体泵10设计为环形齿轮泵。因此,其包括泵单元12,其根据环形齿轮泵的原理工作。
借助于泵单元12,经由流体入口14提供给流体泵10的流体被输送到流体泵10的流体出口16。流体被加压,因此流体入口14可被描述为吸入侧,而流体出口16为压力侧。
泵单元12借助于由控制单元20控制的电驱动单元1 8驱动。
电驱动单元18布置在泵单元12与控制单元20之间。
电驱动单元18还包括定子22和转子24(仅在图2和图3中示意性地示出),其可绕转子轴线26旋转。
在此上下文中,定子22布置在驱动壳体28的环形定子室22a中,转子24布置在与定子室22a分开并且位于其内部的转子室24a中。因此,转子室24a位于环形内部。因此,转子24是所谓的内部转子。
而且,定子22通过浇铸材料23封装在定子室22a内。换句话说,定子22通过浇铸材料23嵌入在定子室22a中。
转子室24a和定子室22a均形成为罐状,其中定子室22a和转子室24a在相对的轴向侧敞开。这种所谓的双罐形式配置为驱动壳体的一部分。
定子22包括围绕其圆周分布的多个定子段22b。在根据图2的实施例中存在的总共十二个定子段22b中,为了清楚起见,仅少数用参考符号标记。
在相应的相邻定子段22b之间设置有径向凹陷22c。
转子室24a和定子室22a由内壁30隔开。
因此,该内壁30径向向内界定定子室22a并且径向向外界定转子室24a。
它具有多个壁部30a,其对应于定子22的径向凹陷22c的数量并且在定子22的方向上形成为径向凸起30b,其在转子室24a的方向上形成对应的径向凹部30c。
径向凸起30b和径向凹部30c基本在内壁30的整个轴向长度上延伸。
每个径向凸起30b在此接合在定子22的相应分配的径向凹陷22c中,使得定子22不可旋转地安装在驱动壳体28中。为此,径向凸起30b和径向凹陷22c形成在圆周方向上起作用的形状配合连接。
另外,大致轴向延伸的冷却剂通道30d形成在每个壁部30a中并且在转子室24a的方向上径向敞开。经由冷却剂通道30d,冷却剂可被引导到转子室24a中,从而电驱动单元18被冷却。这尤其适用于转子24。
此外,壁部30a在其径向外侧呈圆形。因此,在图2和3的截面图中,壁部30a的径向外侧呈部分圆的形式。
因此,轴向延伸的冷却剂通道30d可首先配备有较大的流动横截面。
其次,由于壁部30a的圆形形式,冷却通道30d具有较大的表面积,从而促进了在冷却通道30d中流动的冷却剂与定子室22之间的热交换。
流体泵10可以如下制造。
首先,制造定子22,其具有周向分布的定子段22b和位于其间的径向凹陷22c。
此外,制造其中存在定子室22a的驱动壳体28。
如已经说明,定子室22a由内壁30径向向内界定,并且内壁30具有相对于基础轮廓突出的壁部。这些壁部30a在定子侧设计为径向凸起30a。
现在,定子22相对于驱动壳体28对准,使得沿着转子轴线26的每个径向凹陷22c与对应的壁部30a(即对应的径向凸起30b)相对。
然后将定子沿着转子轴线26插入驱动壳体28中,其中呈径向凸起30b形式的突出壁部30a接合在分配的径向凹陷22c中。
最后,通过浇铸材料23将定子22封装在定子室22a中。
Claims (11)
1.一种流体泵(10),特别是用于向离合器致动器、传动系的齿轮箱致动器、润滑系统和/或冷却系统供应的油泵,所述流体泵具有包括定子(22)和绕转子轴线(26)可旋转的转子(24)的电驱动单元(18),其中,所述定子(22)布置在驱动壳体(28)的环形定子室(22a)中,所述转子(24)布置在与所述定子室(22a)分开并且位于所述定子室(22a)内部的转子室(24a)中,其特征在于,径向向内界定所述定子室(22a)的内壁(30)具有至少一个壁部(30a),所述壁部接合在存在于两个周向相邻的定子段(22b)之间的定子(22)的分配的径向凹陷(22c)中。
2.根据权利要求1所述的流体泵(10),其特征在于,径向向内界定所述定子室(22a)的内壁(30)具有多个周向分布的壁部(30a),其中,每个壁部(30a)接合在存在于周向相邻的定子段(22b)之间的定子(22)的分配的径向凹陷(22c)中。
3.根据权利要求1或2所述的流体泵(10),其特征在于,一个壁部(30a)是所述内壁(30)的一个径向凸起(30b),或者多个壁部(30a)是所述内壁(30)的多个径向凸起(30b),特别是其中,所述径向凸起(30b)在所述内壁(30)的整个轴向长度上延伸。
4.根据权利要求3所述的流体泵(10),其特征在于,一个或多个径向凸起(30b)在面向所述转子室(24a)的内壁(30)的一侧上形成一个或多个对应的径向凹部(30c)。
5.根据前述权利要求中任一项所述的流体泵(10),其特征在于,基本轴向延伸的冷却剂通道(30d)形成在每个壁部(30a)中,特别是其中,所述冷却剂通道(30d)在所述转子室(24a)的方向上径向敞开。
6.根据前述权利要求中任一项所述的流体泵(10),其特征在于,所述壁部(30a)在其径向外侧上是圆形的,特别是在其整个轴向长度上是圆形的。
7.根据前述权利要求中任一项所述的流体泵(10),其特征在于,所述定子室(22a)和所述转子室(24a)是罐状的,其中,所述定子室(22a)和所述转子室(24a)在相对的轴向侧敞开。
8.根据前述权利要求中任一项所述的流体泵(10),其特征在于,所述定子(22)借助于浇铸材料(23)嵌入在所述定子室(22a)中。
9.根据前述权利要求中任一项所述的流体泵(10),其特征在于,所述流体泵(10)是齿轮泵,特别是环形齿轮泵。
10.一种用于制造流体泵(10)、特别是油泵的方法,该流体泵具有电驱动单元(18),所述电驱动单元包括定子(22)和绕转子轴线(26)可旋转的转子(24),其特征在于以下步骤:
a)提供具有围绕所述定子(22)的圆周分布的多个定子段(22b)的定子(22),其中,径向凹陷(22c)形成在相应的相邻定子段(22b)之间,
b)为驱动壳体(28)提供定子室(22a),其中,所述定子室(22a)的壁部(30a)对应于径向凹陷(22c)并且相对于界定所述定子室(22a)的内壁(30)的基础轮廓突出,
c)相对于所述驱动壳体(28)对准所述定子(22),以使每个径向凹陷(22c)在轴向方向上与对应的壁部(30a)相对,
d)将所述定子(22)插入所述驱动壳体(28)中,其中,突出的壁部(30a)接合在分配的径向凹陷(22c)中。
11.根据权利要求10所述的方法,其特征在于,所述定子(22)被封装在所述定子室(22)的内部。
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DE102019130717.1A DE102019130717A1 (de) | 2019-11-14 | 2019-11-14 | Flüssigkeitspumpe |
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EP (1) | EP3823135A1 (zh) |
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TWI594551B (zh) * | 2012-03-29 | 2017-08-01 | 荏原製作所股份有限公司 | 密封電動機、真空泵 |
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DE102016209312A1 (de) * | 2016-05-30 | 2017-11-30 | Bühler Motor GmbH | Elektrische kreiselpumpe |
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- 2019-11-14 DE DE102019130717.1A patent/DE102019130717A1/de active Pending
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2020
- 2020-11-04 US US17/089,167 patent/US20210148357A1/en not_active Abandoned
- 2020-11-06 EP EP20206090.1A patent/EP3823135A1/en not_active Withdrawn
- 2020-11-11 KR KR1020200150277A patent/KR20210058708A/ko unknown
- 2020-11-13 CN CN202011275349.8A patent/CN112796994A/zh active Pending
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US5015159A (en) * | 1989-06-01 | 1991-05-14 | Aisan Kogyo Kabushiki Kaisha | Fuel pump |
US20030230950A1 (en) * | 2002-06-17 | 2003-12-18 | Christian Reimann | Electric motor having a multipole rotor and a multipole stator |
US20090022610A1 (en) * | 2006-02-23 | 2009-01-22 | Thomas Materne | Motor centrifugal pump |
EP2246962A2 (en) * | 2009-04-30 | 2010-11-03 | General Electric Company | High speed internal permanent magnet machine |
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US20190036388A1 (en) * | 2017-07-28 | 2019-01-31 | Nidec Corporation | Stator, motor, air blower, and method of manufacturing stator |
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US20210148357A1 (en) | 2021-05-20 |
KR20210058708A (ko) | 2021-05-24 |
DE102019130717A1 (de) | 2021-05-20 |
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