CN105864033A - 叶片泵 - Google Patents

叶片泵 Download PDF

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CN105864033A
CN105864033A CN201610082456.6A CN201610082456A CN105864033A CN 105864033 A CN105864033 A CN 105864033A CN 201610082456 A CN201610082456 A CN 201610082456A CN 105864033 A CN105864033 A CN 105864033A
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rotor
vane pump
entrance
recess
inner hole
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CN105864033B (zh
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埃里克·豪高
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Danfoss AS
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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
    • F04C2/3446—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 more than one line or surface
    • 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
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F04C2/3448—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 with axially movable vanes
    • 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
    • F04C2250/00—Geometry
    • F04C2250/10—Geometry of the inlet or outlet
    • F04C2250/101—Geometry of the inlet or outlet of the inlet
    • 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
    • F04C2250/00—Geometry
    • F04C2250/10—Geometry of the inlet or outlet
    • F04C2250/102—Geometry of the inlet or outlet of the outlet

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

公开了一种叶片泵(1)，包括：壳体(2)，其具有定子内孔的；转子(4)，其可旋转地安装在所述定子内孔中，并且多个叶片(5)沿所述转子(4)的径向可滑动地安装在所述转子(4)中；入口(11)和出口(12)。这种叶片泵应当具有较高的效率。为此，所述入口(11)在所述定子内孔(3)的轴向端壁中开口，并且所述出口(12)与形成在所述定子内孔的圆周壁(3)中的流出区连接。

Description

叶片泵
技术领域
本发明涉及一种叶片泵，包括：具有定子内孔的壳体；转子，可旋转地安装在所述定子内孔中并且具有沿所述转子的径向可滑动地安装在所述转子中的若干叶片；入口和出口。
背景技术
这种叶片泵可被用作例如与压力交换器相连的增压泵，其中压力交换器和增压泵的组合被用于与反渗透系统相连。当转子旋转时，由壳体形成的泵室、转子和叶片减小和增大它们的容积。在室的容积增大阶段的过程中，液体被吸入室内。在室的容积减小阶段的过程中，液体被泵出室外。
发明内容
本发明的目的在于提出一种高效的叶片泵。
该目的通过在开篇处描述的叶片泵解决，其特征在于所述入口在所述定子内孔的轴向端壁中开口，并且所述出口与形成在所述定子内孔的圆周壁中的流出区连接。
在这种叶片泵中，液体以具有轴向速度分量的方式供应到由壳体、转子和叶片形成的泵室中，使得流入的液体可以利用其自身的惯性快速地填充压力室。压力损失可以被保持得较。在转子的旋转过程中，压力室内的液体承受离心力。该离心力可以附加地被用于将液体推出泵室，再次节省能量。
优选地，所述流出区形成为位于所述圆周壁中的出口凹部。一旦泵室与所述出口凹部形成重叠关系，液体的流出就能够开始，并且液体的流阻随着转子的进一步旋转而下降，由此能够将损失保持为较小。
在优选的实施例中，所述入口连接到位于所述定子内孔的轴向端壁中的肾形的入口凹部，所述入口凹部具有沿径向的宽度，所述宽度沿所述转子的旋转方向增大。流入的液体不但具有相对于转子的转动轴线的沿轴向方向的分量。流入的液体同样沿转子的切向或周向流动。由于宽度在转子的旋转方向上增大，因此液体的流阻减小。将液体提供给至泵室的流动通道沿转子轴线是弯曲的，使得流体获得沿泵室的旋转方向的速度分量。
优选地，所述转子偏心地定位在所述定子内孔中，其中所述入口凹部的径向内边界与绕所述转子的旋转轴线的环线平行，并且所述入口凹部的径向外边界与所述定子内孔的所述圆周壁平行。通过利用转子在定子内孔中的偏心定位，形成入口凹部的增大的宽度。这使得结构简单。
在优选的实施例中，所述转子具有芯体，其中所述入口凹部的所述径向内边界与所述芯体的径向外表面具有相同的半径。芯体基本上为圆柱体，稳定装置引导叶片从该芯体沿径向向外突出。以这种方式，能够使液体能够流出入口凹部进入泵室的区域尽可能的大。
优选地，所述入口凹部包括沿所述转子的径向方向延伸的后边界。在大多数情况下，叶片沿径向定向。当入口凹部的后缘被布置成在叶片经过该后缘的时刻与叶片平行时，转子沿旋转方向的进一步的移动可以被用于在压力室中对液体施压，而没有使液体逸出压力室的可能。
优选地，位于所述入口凹部的底部中的缝隙形开口将所述入口凹部与所述入口连通。缝隙形开口允许流入的液体以较小的损失在圆周方向上沿凹部的长度分布。
优选地，所述出口凹部具有沿径向的深度，所述深度沿所述转子的旋转方向增大。这意味着当转子和泵室沿旋转方向朝向出口移动时输出液体的流阻下降，由此使损失最小化。优选地，出口凹部的深度被设计为保持流体的速度几乎不变。
优选地，所述出口凹部在轴向方向上比所述叶片短。定子内孔的圆周壁的剩余部分可以被用于引导叶片。
优选地，所述出口相对于所述定子内孔的径向方向倾斜30°至60°范围内的角度。输出液体不仅承受离心力，而且还具有沿切向的运动分量。输出的倾斜以有利的形式利用离心力和输出液体的运动的切向分量，这是获得较高效率的进一步措施。
在优选的实施例中，所述入口被构造并设置为与另一个液压机械直接连接。在这种情况下，能够在叶片泵和液压机械之间形成连接而不使用任何导管或其它外部管道。这种叶片泵和液压机械的单元可以形成例如用于恢复反渗透系统中的压力的液压装置。
附图说明
现在参照附图更详细地描述本发明的优选实施例，其中：
图1叶片泵的正视图；以及
图2图1的II-II截面。
具体实施方式
叶片泵1包括具有壳体2，该壳体具有例如圆柱形的定子内孔3。定子内孔具有圆周壁3。
转子4位于所述定子内孔内。转子4承载若干叶片5。每个叶片相对于转子4沿可径向移动。为此，转子4包括芯体6和用于每个叶片5的突起部7，缝隙8形成在突起部7中。叶片5可滑动地设置在所述缝隙8内。
转子4沿旋转方向固定在轴9上。当轴9旋转时，转子4被驱动。旋转方向用箭头10表示。
入口11设置在壳体2的轴向端部。而且，具有出口轴线13的出口12设置在壳体2的周向外侧。
入口11可以被构造并设置为与另一个液压机械直接连接，例如与压力交换器直接连接。在这种情况下，能够在液压机械和叶片泵之间形成连接，而无需使用任何导管或其它外部管道。在所述情况下，将入口11设置成与壳体2的布置该入口的侧面齐平将是优选的。
入口11与入口11附近的肾形的入口凹部14连接，该入口凹部14位于壳体2的侧面上的定子内孔3的轴向端壁中。入口凹部14沿径向具有宽度。如图2所示，该宽度沿方向10增大，即沿转子4的旋转方向增大。
如图2所示，转子4偏心地定位在定子内孔中。当转子4沿方向10旋转时，每个由芯体6、突起部7、两个叶片5、壳体2和壳体的两个轴向端壁(未示出)形成的泵室15增大和减小其容积。在形成入口凹部14的区域中，泵室15增大容积，并且在入口凹部14和出口12之间的区域，泵室15减小其容积。
入口凹部14具有径向内边界16，径向内边界平行于绕转子4的旋转轴线17的环线，更准确地说，径向内边界16与转子的芯体6的径向外表面一致。
此外，入口凹部具有平行于所述定子内孔3的圆周壁的径向外边界18。如图所示，径向外边界18可相对于定子内孔的圆周壁3具有较小的距离。然而，使径向外边界18具有与定子内孔相同的半径也是可以的。
入口凹部具有沿转子4的径向方向延伸的后缘19(或后边界)。由于叶片5径向设置在转子4内，每一个叶片5在叶片5经过后缘19时平行于后缘19。换句话说，一旦叶片5经过后缘19，泵室15立刻关闭。
缝隙形的开口20设置在入口凹部14的底部。缝隙形的开口20连接入口11和入口凹部14，并且允许流入的液体平稳分布在入口凹部14的周向上。
定子内孔具有流出区，该流出区形成为在定子内孔的圆周壁31中的出口凹部21。该出口凹部21具有比叶片5的轴向长度略短的轴向长度，使得导向面22保持在定子内孔内，控制叶片5的移动。
如图2所示，出口凹部沿径向具有深度，所述深度沿转子4的旋转方向10增大。
在转子5的旋转过程中，困在泵室15中的液体承受离心力，即径向作用在液体上指向转子4的外侧的力。同时，困在泵室15中的液体具有与转子4的旋转速度相对应的旋转速度。出口12的轴线13可以相对于转子4的径向倾斜(未示出)，使得产生如下有益效果：一旦泵室15已经与出口凹部21形成重叠关系，离心力即沿径向移动液体；此外，被困的流体15的切向速度可被用于使液体低损失地移出泵室15并进入出口12。
因此，可以低损失地并高效地使用叶片泵1。

Claims (11)

1.一种叶片泵(1)，包括：
壳体(2)，所述壳体具有定子内孔；
转子(4)，所述转子可旋转地安装在所述定子内孔中，并且多个叶片(5)沿所述转子(4)的径向可滑动地安装在所述转子(4)中；
入口(11)；和
出口(12)，
其特征在于，所述入口(11)在所述定子内孔的轴向端壁中开口，并且所述出口(12)与形成在所述定子内孔的圆周壁(3)中的流出区连接。
2.根据权利要求1所述的叶片泵，其特征在于，所述流出区形成为位于所述圆周壁(3)中的出口凹部(21)。
3.根据权利要求1或2所述的叶片泵，其特征在于，所述入口(11)连接到位于所述定子内孔的轴向端壁中的肾形的入口凹部(14)，所述入口凹部(14)具有沿径向的宽度，所述宽度沿所述转子的旋转方向(10)增大。
4.根据权利要求3所述的叶片泵，其特征在于，所述转子(4)偏心地定位在所述定子内孔(3)中，其中所述入口凹部(14)的径向内边界与绕所述转子(4)的旋转轴线(17)的环线平行，并且所述入口凹部(14)的径向外边界(18)与所述定子内孔的所述圆周壁(3)平行。
5.根据权利要求4所述的叶片泵，其特征在于，所述转子(4)具有芯体(6)，其中所述入口凹部(14)的所述径向内边界(16)与所述芯体(6)的径向外表面具有相同的半径。
6.根据权利要求4或5所述的叶片泵，其特征在于，所述入口凹部(14)包括沿所述转子(4)的径向方向延伸的后边界(19)。
7.根据权利要求3-6中任一项所述的叶片泵，其特征在于，定位在所述入口凹部(14)的底部中的缝隙形开口(20)将所述入口凹部(14)与所述入口(11)连通。
8.根据权利要求1-7中任一项所述的叶片泵，其特征在于，所述出口凹部(21)具有沿径向的深度，所述深度沿所述转子的旋转方向(10)增大。
9.根据权利要求1-8中任一项所述的叶片泵，其特征在于，所述出口凹部(21)在轴向方向上比所述叶片(5)短。
10.根据权利要求1-9中任一项所述的叶片泵，其特征在于，所述出口(12)相对于所述定子内孔的径向方向倾斜30°至60°范围内的角度。
11.根据权利要求1-10中任一项所述的叶片泵，其特征在于，所述入口(11)被构造并设置为与另一个液压机械直接连接。
CN201610082456.6A 2015-02-11 2016-02-05 叶片泵 Active CN105864033B (zh)

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