CN111173739A - 一种液压泵 - Google Patents

一种液压泵 Download PDF

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CN111173739A
CN111173739A CN201910777784.1A CN201910777784A CN111173739A CN 111173739 A CN111173739 A CN 111173739A CN 201910777784 A CN201910777784 A CN 201910777784A CN 111173739 A CN111173739 A CN 111173739A
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contact surface
chamber
inner contact
chamber housing
hydraulic pump
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CN111173739B (zh
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周全保
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Chongqing Changan Automobile Co Ltd
Chang'an Uk R & D Center
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Chongqing Changan Automobile Co Ltd
Chang'an Uk R & D Center
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C2/3442—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

一种液压泵(10)，包括液体室壳体(12)和转子组件(14)。液体室壳体(12)和转子组件(14)相互配合从而定义液体室(16)。液体室壳体(12)和转子组件(14)可以相对移动，从而推动液体室(16)里的液体沿着液体室壳体(12)的内接触面(34)从液压泵(10)的进口(26)到出口(28)。当转子组件(14)和液体室壳体(12)相对移动时，转子组件(14)包括叶片(20)，通过叶片(20)的液体接触面推动液体。叶片(20)进一步包括腔室接触面(32)，配置为在液体室壳体(12)的内接触面(34)上滑动，当转子组件(14)和液体室壳体(12)发生相对移动时。内接触面(34)包括设置在其上的腔室(40’,40’’,40’’’)，在液体室壳体(12)和叶片(20)之间定义非接触部分(42,42a,42b),腔室(40’,40’’,40’’’)位于内接触面(34)的相邻外边缘(44a,44b;44’a,44’b)。

Description

一种液压泵
技术领域
本发明涉及一种液压泵。
背景技术
众所周知，在液压控制系统中，使用液压泵提供一定流量的流体以维持相关下游设备的压力要求，例如内燃机或机动车辆的自动变速器。
发明内容
根据发明的第一个方面是提供了一个由液体室壳体和转子组件组成的液压泵，液体室壳体和转子组件相互配合从而定义了一个液体室，液体室壳体和转子组件可以相互移动，驱动液体室的液体沿着液体室壳体内部接触面从液压泵的进口流向出口。
转子组件包括叶片，所述叶片被配置为当转子组件和液体室壳体发生相对移动时转子通过叶片的液体接触面推动液体，叶片进一步包括腔室接触表面配置，当转子组件和液体室壳体发生相对移动时叶片滑过液体室壳体的内接触面。
内接触面包括设置在其上的腔室，腔室限定了液体室壳体和叶片之间的非接触部分，其中所述腔室位于所述内接触面的相邻外边缘之间。
液体室壳体在内接触面配置有腔室，定义了液体室壳体和叶片之间非接触部分，意味着叶片腔室接触面和液体室壳体内接触面的滑动接触面积减小。因此，叶片和液体室壳体之间的摩擦也减小，提高了液压泵的整体效率。
此外，位于内接触面相邻外边缘之间的腔室意味着可以为腔室选择更大的内接触面面积，从而增加叶片和液体室壳体的非接触面面积，同时仍然为叶片提供足够的支撑。
因此，在保持液压泵稳定运行的同时，包含这样一个腔室可以提高液压泵的效率。
优选的，当叶片滑过腔室时，内接触面被配置为允许腔室接触面的两个外端部分保持与内部接触面接触。
这种内接触面配置意味着当叶片滑过腔室时，叶片在两个外端部分均受支撑。受支撑的叶片在液压泵运行过程中有助于防止叶片振动，如果叶片在两个外端部分没有受到支撑，可能会发生叶片振动，例如因为内接触面在外边缘有腔室形成，以至于叶片仅在它的腔室接触面的中间部分受到支撑。
优选的，当叶片在整个内接触面滑动时，内接触面被配置为允许腔室接触面的两个外端部分与内接触面保持接触。
这种布置意味着当叶片在整个内接触面滑动时，内接触面为叶片两个外端部分提供持续的支撑。换句话说，在内接触面的外边缘没有空腔（因此没有非接触点）。因此，在液压泵的整个工作过程中，液压泵的稳定性得到了提高。
液体室壳体包括密封部分，腔室可以位于密封部分的外部。
腔室位于密封部分的外侧，意味着腔室不存在密封部分中，因此不会影响液压泵的运行。
可选的，腔室为细长凹槽。
该腔室是一个细长凹槽，沿凹槽的长度提供了一个连续的非接触部分，从而最大限度的减少了叶片与液体室壳体之间的摩擦。
可选的，内部接触构件包括多个腔室。
具有多个腔室意味着摩擦的减少（即由于腔室提供的非接触部分）可以通过为叶片提供足够的支撑来平衡（即通过与叶片可滑动接触的腔室之间的接触面）。
附图说明
本发明的优选实施例将参照附图以非限制性示例的方式进行描述，附图中：
图1 展示了本发明的液压泵的示意图；
图2 展示了本发明的第一种实施例的液压泵腔室示意图；
图3 展示了本发明的第二种实施例的液压泵腔室示意图；
图4展示了本发明的第三种实施例的液压泵腔室示意图。
具体实施方式
液压泵10如图1所示。液压泵10包括液体室壳体12和位于液体室壳体12内的转子组件14。液体室壳体12和转子组件14相互配合，从而在其中定义液体室16。
转子组件14包括转子18和从转子18径向延伸的多个叶片20。转子18具有多个槽22，与各个叶片20实现可移动耦合。每个叶片20都可与液体室壳体12配合，以便定义位于相邻叶片20之间的对应液体室部分24。
液压泵10还包括入口26和出口28，液体通过它们流进和流出液体室16。 转子组件14相对于液体室壳体12可相对移动，以便在进口26和出口28之间推动液体。更具体的，转子18相对于液体室壳体12可旋转，并且这种旋转允许叶片20向外侧移动至液体室壳体12（即由于离心力）。叶片20各有一个液体接触面30，当转子18相对于液体室壳体12旋转时，该液体接触面30推动流体。此外，叶片20各有一个腔室接触面32，该腔室接触面32滑动过液体室壳体12的内接触面34。
因此，每个叶片20的腔室接触面32和液体室壳体12的内接触面34定义了两个表面彼此滑动接触的接触部分36，36a，36b，如图2至图4所示更加清楚。
在其他实施例中，液体室壳体12可相对于转子组件14移动，或者液体室壳体12和转子组件14可相对于彼此移动。
液体室壳体12包括外凸轮环38，其内表面定义叶片20滑动的内接触面34。
图2至图4显示了液体室壳体12的内接触面34，就好像它已被展平一样。内接触面34包括腔室40’，40’’，40’’’，当叶片20通过腔室40’， 40’’，40’’’时，定义流体室壳体12和每个叶片20之间的非接触部分42，42a，42b。
图2显示根据本发明第一种实施例的腔室40’。内接触面34包括一个单腔40’，该单腔40’位于内接触面34的两个外边缘44a，44b的外侧。因此，当叶片20滑过腔室40’时，每个叶片20的每个腔室接触面32的外端部46a，46b与内接触面34保持接触。同时，位于每个叶片20的每个腔室接触面32的外端部46a，46b之间的中间部分48在其滑过腔室40’（即滑过非接触部分42）时不与内接触面34接触。
进一步，在内接触面34的外边缘44a，44b处没有其他腔室，因此，当叶片20在整个内接触面34上滑动时，每个叶片20的腔室接触面32与内接触面34保持接触。
内接触面34包括一个密封部分50，该密封部分50不含任何腔室40’，以便当叶片20在密封部分50上滑动时，每个腔室接触面32的整个长度，即外端部分46a，46b和中间部分48，与内接触面34接触。
在本实施例中，腔室40’是一个细长凹槽。凹槽大体为矩形的横截面形状，但它可以是另一种形状，如椭圆形。如图所示，凹槽有一个区域定义了大部分内接触面34。优选的，所述凹槽定义了内接触面34的80%。
T凹槽较浅，例如，有可能约10µm的深度。
图3显示本发明第二实施例的腔室40’’。本实施例中，腔室40’’由多个离散腔室部分54组成，每个部分定义一个离散非接触部分42a。这里显示了三个腔室部分54，但有可能会多于或少于3个。
腔室部分54彼此间隔以定义位于离散非接触部分42a之间的中间接触部分36a。每个腔室部分54都位于内接触面34的两个外缘44a，44b内侧。因此，当叶片20滑过腔室部分54时，每个叶片20的每个腔室接触面32的外端部46a，46b与内接触面34保持接触。同时，每个叶片20的每个腔室接触面32的中间部分48在每个中间接触部分36a接触内接触面34，并且在每个离散非接触部分42a滑过腔室部分54时不会接触内接触面34。因此，叶片20在外端部分46a，46b和沿中间部分48内离散点36a处得到支撑。
此外，内接触面34的外边缘44a，44b处没有其他腔室，因此，当叶片20在整个内接触面34上滑动时，每个叶片20的腔室接触面32与内接触面34保持接触。
如前所述，内接触面34包括一个密封部分50，该密封部分不含任何腔室40’’，以便当叶片20在密封部分50上滑动时，每个腔室接触面32的整个长度（即外端部分46a，46b和中间部分48）与内接触面34接触。
每个腔室部分54是一个横截面大体上为矩形的细长凹槽56。如图所示，细长凹槽56的总面积定义了大部分内接触面34。优选的，细长凹槽56的总面积定义了内接触面34的80%。
图4展示根据本发明第三实施例的腔室40’’’。本实施例中，腔室40’’’由多个离散空腔部分58组成，每个部分定义一个离散非接触部分42b。这里显示了三个腔室部分58，但有可能会多于或少于3个。
腔室部分58彼此间隔以定义位于离散非接触部分42b之间的中间接触部分36b。这一次，两个腔室部分58位于内接触面34的各自外边缘44a，44b处。因此，内接触面34的缩进的最外边缘44a，44b形成所述内接触面34的新“外边缘”44’a，44’b。另一个腔室部分58位于内接触面34的新外边缘44’a，44’b之间，即位于外腔室部分58之间。因此，当叶片20滑过腔室部分58时，每个叶片20的每个腔室接触面32的外端部分46a，46b不与内部接触面34接触。替代的，当叶片20滑过腔室部分58时，腔室接触面32的中间部分48在每个中间接触部分36b处接触内部接触面34。因此，当叶片20通过腔室40’’’时，叶片20仅在腔室接触面32的中间部分48的离散点36b处得到支撑。因此，离散点36b位于腔室接触面32的外端部46a、46b的内侧。
如前所述，内接触面34包括一个密封部分50，该密封部分不含任何腔室40’’’，以便当叶片20在密封部分50上滑动时，每个腔室接触面32的整个长度，即外端部分46a，46b和中间部分48与内接触面34接触。
每个腔室部分58是一个横截面大体上为矩形的细长凹槽56。如图所示，细长凹槽56的总面积定义了大部分内接触面34。优选的，细长凹槽56的总面积定义了内接触面34的80%。
在使用中，液压泵10可以连接到机动车中的液压控制系统（未显示）。在该实施例中，入口26和出口28连接到下游设备，例如与机动车的自动变速器或发动机相关联的设备。
液体，如油，通过入口26进入液体室壳体12。转子18旋转，每个叶片20的液体接触面30直接旋转（即本实施例中逆时针方向）推动液体。当转子18旋转时，每个叶片20在转子18中的关联槽22进进出出，使得每个叶片20的腔室接触面32连续地与液体室壳体12的内接触面34相接并滑动。因此，叶片20推动每个液体腔室部分24内的相应部分的液体从入口26推送到出口28。
图2和图3所示，当转子18旋转和叶片20在内部接触面34上滑动时，每个叶片20的腔室接触面32的外端部46a，46b在整个旋转运动过程中与内接触面34保持接触，即在它的外边缘44a，44b处。
图2所示，每个叶片20的腔室接触面32的中间部分48通过由腔体40’定义的内接触面的非接触部分42。因此，当叶片20滑过腔室40’时，每个腔室接触面32的中间部分48和内接触面34之间没有摩擦。此外，当叶片20滑过腔室40’时，每个叶片20的腔室接触面32在两个外端部46a，46b处受到支撑。
图3所示，每个叶片20的腔室接触面32的中间部分48通过由腔室部分54定义的离散非接触部分42a和中间接触部分36a。因此，当叶片20滑过腔室部分54时，每个腔室接触面32的中间部分48和非接触部分42a的内接触表面34之间没有摩擦。此外，当叶片20滑过腔室部分54时，每个叶片20的腔室接触面32在外端部46a，46b和每个中间接触部分36a处受到支撑。
图4所示，每个叶片20的腔室接触面32的中间部分48通过由腔室部分54定义的离散非接触部分42b和离散接触部分36b。这一次，离散接触部分36b位于内接触表面34的最外边缘44a，44b的内侧。因此，每个叶片20的腔室接触面32的外端部分46a，46b和内接触面34之间没有摩擦。此外，每个腔室接触面32的中间部分48和由中间部分腔室58定义的非接触部分42b的内接触面34之间没有摩擦。
图2至图4所示的每个实施例中，当叶片20在密封部分50上滑动时，每个腔室接触面32的整个长度，即外端部分46a，46b和中间部分48，与内接触面34接触。因此，密封部分50捕集了给定量的油，因此可以在入口和出口之间运输。
腔室40'、40''、40'''可在液体室壳体12中形成，通过机加，铸造，烧结，3D打印或其他方法如腐蚀、刻蚀等。

Claims (6)

1.一种液压泵，由液体腔室壳体和转子组件组成，所述液体室壳体和转子组件相互配合从而定义了一个液体室，液体室壳体和转子组件可以相互移动，驱动所述液体室的液体沿着液体室壳体内部接触面从液压泵的进口流向出口；
所述转子组件包括叶片，所述叶片被配置为当所述转子组件和所述液体室壳体发生相对移动时转子通过叶片的液体接触面推动液体，所述叶片进一步包括腔室接触表面，所述腔室接触表面被配置为当转子组件和液体室壳体发生相对移动时叶片滑过液体室壳体的内接触面；
所述内接触面包括设置在其上的腔室，腔室限定了液体室壳体和叶片之间的非接触部分，其中所述腔室位于所述内接触面的相邻外边缘之间。
2.根据权利要求1所述的液压泵，其内接触面被配置为允许当叶片滑过腔室时，腔室接触面的两个外端部分与内接触面保持接触。
3.根据权利要求1或2所述的液压泵，其内接触面被配置为允许当叶片滑过整个内接触面时，腔室接触面的两个外端部分与内接触面保持接触。
4.根据权利要求1、2或3所述的液压泵，所述液体腔室壳体包括密封部分，所述腔室位于密封部分外部。
5.根据权利要求1、2或3所述的液压泵，所述腔室是细长的凹槽。
6.根据权利要求1、2或3所述的液压泵，所述内接触面包括多个腔室。
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US5716201A (en) * 1995-07-31 1998-02-10 Coltec Industries Inc. Variable displacement vane pump with vane tip relief
GB2389875A (en) * 2002-06-21 2003-12-24 Boc Group Plc Vane pump with a non-circular bore
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