CN110714915A - 叶片泵 - Google Patents

叶片泵 Download PDF

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CN110714915A
CN110714915A CN201910629372.3A CN201910629372A CN110714915A CN 110714915 A CN110714915 A CN 110714915A CN 201910629372 A CN201910629372 A CN 201910629372A CN 110714915 A CN110714915 A CN 110714915A
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vane
pump
axis
vane pump
rotor
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A·迪亚费里亚
C·梅多拉
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Robert Bosch GmbH
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Robert Bosch GmbH
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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
    • 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
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/045—Arrangements for driving rotary positive-displacement pumps
    • 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
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • 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
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • 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
    • 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
    • F04C2210/00—Fluid
    • F04C2210/20—Fluid liquid, i.e. incompressible
    • F04C2210/203—Fuel
    • 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
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/12—Magnetic properties

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Rotary Pumps (AREA)

Abstract

叶片泵具有泵体(31)，其由转子(36)可滑动地接合，转子(36)设有多个凹部(39)，凹部(39)中的每一个都由借助于至少一个磁性元件(44)与泵保持接触的驱动叶片(40；45)可滑动地接合，所述磁性元件(44)绕所述泵体(31)的内侧壁(34)安装。

Description

叶片泵
技术领域
本发明涉及一种叶片泵。
背景技术
本发明可以以特别有利的方式用于用来将燃料、优选柴油燃料供给至内燃机的泵送单元中，下文将特别参照该泵送单元而不失去其一般特征。
在用于将燃料供给至内燃机的泵送单元领域中，已知提供一种泵送单元，其包括：用于将燃料供给至内燃机的高压泵、例如活塞泵；以及用于将燃料从储存容器供给至高压泵的低压泵或预供给泵。
低压泵是叶片泵，其包括泵体，所述泵体又包括杯形容纳壳体和用于封闭所述容纳壳体的盖件。
容纳壳体由基本上平坦的端壁和基本上圆柱形的内侧壁限界，并且在其内部容纳转子，所述转子安装成能够绕旋转轴线转动，所述旋转轴线基本上垂直于端壁并且平行于所述内侧壁的纵向轴线并与所述内侧壁的纵向轴线分开。
转子具有多个凹部，所述凹部绕旋转轴线均匀地分布并沿所述转子的外周边缘向外敞开。
每个凹部由驱动叶片可滑动地接合，所述驱动叶片与转子的旋转轴线平行地延伸，并且突出凹部之外，以便布置成与容纳壳体的内侧壁相接触。
每个驱动叶片通过容纳在凹部内并布置在转子与所述驱动叶片之间的弹性件被推动并保持压在容纳壳体的内侧壁上。
驱动叶片绕旋转轴线分布，以便形成多个容积可变室，所述容积可变室以流体密封的方式连接在一起，并通过转子首先移动经过叶片泵的燃料入口，然后经过所述叶片泵的燃料出口。
由于驱动叶片通过由转子的转动产生的离心力并通过有弹性件施加的径向推力而与容纳壳体的内侧壁保持接触，因此上述类型的已知叶片泵具有许多缺点，主要是由于下述事实：当转子具有相对慢的旋转速度时，作用在驱动叶片上的离心力相对较小并且损害了容积可变室之间的正确的流体密封连接。
上述类型的已知叶片泵还具有另外的缺点，因为下述事实：弹性件施加的径向推力根据转子绕所述旋转轴线的角位置而变化。
发明内容
本发明的目的在于提供一种叶片泵，其不具有上述缺点并且制造简单且便宜。
根据本发明，提供了一种叶片泵，其包括：泵体；安装在泵体内以便绕旋转轴线转动的转子；形成在转子中以便分别在内部容纳相应的驱动叶片的多个凹部，所述驱动叶片与相关的凹部可滑动地接合并且通过转子绕旋转轴线且沿泵体的内侧壁运动，其特征在于，叶片泵还包括绕内侧壁安装或在驱动叶片中安装的用于将驱动叶片推向所述内侧壁的磁性结构。
本发明还提供一种泵送单元，其用于将燃料、优选柴油燃料供给至内燃机，所述泵送单元包括用于将燃料供给至内燃机的高压泵和用于将燃料从储存容器供给至高压泵的低压泵；所述低压泵是根据本发明的叶片泵。
附图说明
现在将参照附图描述本发明，附图示出了本发明的实施例的非限制性示例，其中：
图1是根据本发明的叶片泵的一优选实施例的第一示意性剖视图，其中，为了更加清楚，移除了部分部件；
图2是根据图1的泵送单元的第二示意性剖视图，其中，为了更加清楚，移除了部分部件；
图3是根据图1的叶片泵的示意性前视图，其中，为了更加清楚，移除了部分部件；以及
图4是根据图3的叶片泵的一变型例的示意性前视图，其中，为了更加清楚，移除了部分部件。
具体实施方式
参照图1和图2，1整体地表示用于将燃料、优选柴油燃料供给至内燃机(未示出)的泵送单元。
泵送单元1包括：用于将燃料供给至所述内燃机(未示出)的高压泵2；和用于将燃料从储存容器(未示出)供给至所述泵2的低压或预供给泵3。
高压泵2是包括泵体4的活塞泵，所述泵体4设置有具有纵向轴线6的中央孔5，并且还设置有至少一个侧向孔7(通常多个孔7绕轴线6均匀地分布)，所述侧向孔7具有横向于轴线6的纵向轴线8，并且从所述孔5朝向泵体4的外侧径向地延伸。
每个孔7都由头部件9封闭，所述头部件9布置成与泵体4相接触并且具有与轴线8同轴地伸入孔7内的凸起部10。
头部件9具有中央孔11，所述中央孔11形成为与轴线8同轴地通过头部件9，并且包括沿着所述轴线8彼此对准的较宽部12和较窄部13。
较窄部13面向孔5并且限定高压泵2的缸14。
缸14可滑动地接合活塞15，所述活塞15由于致动装置16的推力而能够以交替的直线运动移动，所述交替的直线运动包括用于将燃料吸入缸14的进油冲程和用于压缩容纳在所述缸14内的燃料的压缩冲程。
装置16包括管状衬套17，所述管状衬套17可滑动地与轴线8同轴地接合在孔7内，并且绕缸14延伸，并具有内部环形凸缘18，所述内部环形凸缘18从衬套17的内表面径向地突出并将衬套17分成两个圆筒部19、20，其圆筒部19面向孔5。
装置16还具有挺杆系统21，所述挺杆系统21包括具有大致圆柱形状的耦接块27，所述耦接块借助于干涉而被锁定在部分19内，并且布置成与凸缘18相接触并支撑挺杆系统滚子23。
滚子23从块22朝向孔5突出，并且与块22可转动地耦接，从而相对于所述块22绕其基本垂直于轴线8的纵向轴线24转动。
凸缘18支撑环形盘25，所述环形盘25绕活塞15延伸，并且与轴线8同轴地插入衬套17的部分20内，并具有轴向地面向凸缘18的外周边缘和轴向地面向所述活塞15的头部的内周边缘。
装置16还包括压缩弹性件26，所述压缩弹性件26与轴线8同轴地安装在凸起部10与衬套17之间，并布置在头部件9与盘25之间，以便使盘25移位并通常保持盘25与凸缘18相接触，以及滚子23与形成在传动轴28的中间部分的外表面上的凸轮27相接触，所述传动轴28通过孔5安装，以便相对于壳体4绕轴线6转动。
头部件9在内部容纳有用于将燃料吸入缸14的进油阀29和用于将燃料供应至内燃机(未示出)的输送阀30。
如图3所示，低压或预供给泵3是包括泵体31的叶片泵，泵体31又包括容纳壳体32，所述容纳壳体32具有杯形形状，并且由基本上平坦的端壁33限界并且还由基本上圆柱形的内侧壁34限界。
泵体31还包括用于封闭壳体32的盖件35(图2)，并在内部容纳转子36，所述转子36安装成能够绕旋转轴线37转动，所述旋转轴线37平行于壁34的纵向轴线38并与壁34的纵向轴线38分开。
转子36具有多个凹部39，所述凹部39绕轴线37均匀地分布并沿所述转子36的外周边缘向外敞开。
每个凹部39都由驱动叶片40可滑动地接合，所述驱动叶片40平行于轴线37延伸，并由铁磁金属材料制成，并且径向地突出至凹部39之外，以便布置成与壁34相接触。
叶片40在它们之间限定多个容积可变室41，所述容积可变室41以流体密封的方式连接在一起，并且通过转子36绕轴线37首先移动经过泵3的燃料入口42，然后经过所述泵3的燃料出口43。
各个叶片40通过由转子36绕轴线37的转动产生的离心力以及通过由绕壳体32与轴线38同轴地安装的环形磁体44产生的附加径向力被推到壁34上。
根据(未示出的)多个变型例：
磁体44与轴线38同轴地安装在壳体32内；
去掉磁体44并用绕壳体32安装并绕轴线38分布的多个磁体代替磁体45；以及
去掉磁体44并用安装在壳体32内并绕轴线38分布的多个磁体代替磁体45。
图4中所示的变型例与前面附图中所示的变型例的不同之处仅在于，其中，每个叶片40都被去掉并由叶片45代替，所述叶片45由塑料材料或非铁磁金属材料制成并且具有并入叶片中的由铁磁金属材料制成的杆46。
根据一变型例(未示出)，每个杆46都被去掉并由相应的磁体代替，磁体44被去除，并且侧壁34由铁磁金属材料制成。
泵送单元1提供了主要由于以下事实的多个优点：磁体44产生的附加径向力确保了容积可变室41之间的正确的流体密封式连接，即使当转子36具有相对慢的转速时也是如此。

Claims (10)

1.一种叶片泵，其包括：泵体(31)；安装在泵体(31)内以便绕旋转轴线(37)转动的转子(36)；形成在转子(36)中以便分别在内部容纳相应的驱动叶片(40；45)的多个凹部(39)，所述驱动叶片(40；45)与相关的凹部(39)可滑动地接合并且通过转子(36)绕旋转轴线(37)且沿泵体(31)的内侧壁(34)运动，其特征在于，叶片泵还包括绕内侧壁(34)安装或在驱动叶片(40；45)中安装的用于将驱动叶片(40；45)推向所述内侧壁(34)的磁性结构(44)。
2.根据权利要求1所述的叶片泵，其中，驱动叶片(40)由铁磁金属材料制成。
3.根据权利要求1所述的叶片泵，其中，每个驱动叶片(45)都由塑料或非铁磁金属材料制成并具有并入驱动叶片中的铁磁材料元件(46)。
4.根据权利要求1-3中任一项所述的叶片泵，其中，磁性结构(44)包括绕泵体(31)和旋转轴线(37)安装的环形磁体。
5.根据权利要求1-3中任一项所述的叶片泵，其中，磁性结构(44)包括绕旋转轴线(37)安装在泵体(31)内的环形的磁体。
6.根据权利要求1-3中任一项所述的叶片泵，其中，磁性结构(45)包括绕泵体(31)和旋转轴线(37)分布的多个磁体。
7.根据权利要求1-3中任一项所述的叶片泵，其中，磁性结构(44)包括安装在泵体(31)中并绕旋转轴线(37)分布的多个磁体。
8.根据权利要求1所述的叶片泵，其中，每个驱动叶片(45)都由塑料或非铁磁金属材料制成，其中，内侧壁(34)由铁磁金属制成；磁性结构(44)安装在驱动叶片(45)中。
9.根据前述权利要求中任一项所述的叶片泵，其中，旋转轴线(37)平行于内侧壁(34)的纵向轴线(38)并与所述纵向轴线(38)分开。
10.一种泵送单元，其用于将燃料、优选柴油燃料供给至内燃机，所述泵送单元包括用于将燃料供给至内燃机的高压泵(2)和用于将燃料从储存容器供给至高压泵(2)的低压泵(3)；所述低压泵(3)是根据前述权利要求中任一项所述的叶片泵。
CN201910629372.3A 2018-07-13 2019-07-12 叶片泵 Pending CN110714915A (zh)

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WO2013120030A1 (en) * 2012-02-08 2013-08-15 Shining Golden Yida Welding & Cutting Machinery Manufacture Ltd. Rotary vane air motor with improved vanes and other improvements
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