CN109210246B - 组合式入口和出口止回阀座 - Google Patents
组合式入口和出口止回阀座 Download PDFInfo
- Publication number
- CN109210246B CN109210246B CN201810718453.6A CN201810718453A CN109210246B CN 109210246 B CN109210246 B CN 109210246B CN 201810718453 A CN201810718453 A CN 201810718453A CN 109210246 B CN109210246 B CN 109210246B
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- valve
- seat
- valve seat
- outlet
- inlet
- Prior art date
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1087—Valve seats
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- H01F7/06—Electromagnets; Actuators including electromagnets
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- 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
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
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- F02M37/08—Feeding by means of driven pumps electrically driven
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- F02M59/367—Pump inlet valves of the check valve type being open when actuated
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- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
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- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
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- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
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- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
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- F02M63/0019—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of electromagnets or fixed armatures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
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- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
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- F04B53/10—Valves; Arrangement of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
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- F04B53/10—Valves; Arrangement of valves
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- F04B53/10—Valves; Arrangement of valves
- F04B53/109—Valves; Arrangement of valves inlet and outlet valve forming one unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
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- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
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- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
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- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8053—Fuel injection apparatus manufacture, repair or assembly involving mechanical deformation of the apparatus or parts thereof
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- 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
- F02M37/043—Arrangements for driving reciprocating piston-type pumps
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- 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
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/54—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by air purging means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F2007/062—Details of terminals or connectors for electromagnets
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- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
- Magnetically Actuated Valves (AREA)
- Check Valves (AREA)
- Electromagnets (AREA)
- Lift Valve (AREA)
Abstract
一种用于流体泵的阀组件,包括:阀体;入口盘,入口盘可移动地设置在阀体中;出口盘,出口盘可移动地设置在阀体中;以及阀座,阀座被固定在阀体内。阀座包括:第一孔口,所述第一孔口被限定为在阀座的径向中心部分中轴向地穿过阀座;以及一个或多个第二孔口,一个或多个第二孔口设置成至少部分地围绕第一孔口。入口盘被偏压成处于沿着阀座的第一表面抵靠阀座的闭合位置中,入口盘的闭合位置覆盖阀座的一个或多个第二孔口。出口盘被偏压成处于沿者阀座的第二表面抵靠阀座的闭合位置中。
Description
相关申请的交叉引用
本申请要求2017年7月3日提交的以下临时申请的权益:申请号62/528,348、名称为“组合式入口和出口止回阀座(Combined Inlet and Outlet Check Valve Seat)”的申请; 申请号62/528,345、名称为“非对称弹簧阀盘(Asymmetric Spring Valve Disk)”的申请; 申请号62/528,356、名称为“螺线管的液压阻尼(Hydraulic Damping of aSolenoid)”的申请; 申请号62/528,412、名称为“燃料泵阀构造及组件(Fuel Pump ValveConfiguration and Assembly)”的申请; 申请号62/528,351、名称为“燃料泵螺线管组件方法(Fuel Pump Solenoid Assembly Method)”的申请; 以及申请号为62/528,417、名称为“燃料输送单元组件及操作(Fuel Sending Unit Assembly and Operation)”的申请。这些临时专利申请的内容通过引用整体并入本文中。
技术领域
本发明涉及用于燃料泵的入口阀和出口阀,并且特别地涉及一种用于入口阀和出口阀的阀座。
背景技术
先前或现有的止回阀具有阀座,并且是典型的球弹簧/针弹簧式止回阀。其将弹簧和球用作动态密封元件。此动态密封元件抵靠金属阀座来密封,所述金属阀座的几何形状与动态密封元件匹配以形成密封。此阀座是单向流动的,其中流体的速度将有助于推压抵靠使弹簧压缩的球。球开始抬升离开阀座,并且流体的流动开始。流体将流动穿过阀座孔或孔口,并且围绕球流动并经过正将压力施加到球的弹簧。只要流体正在流动,球就抬升离开阀座,从而允许流动,直到在止回阀的两侧上达到相等压力。概括地说,这种类型的止回阀具有一个孔口,所述孔口是密封着的并且仅提供一个流动方向。
因为仅使用一个孔口/孔,所以需要液体有高的速度以在阀的尺寸增大时保持阀打开(以在某些应用中允许更大的流量)。当阀的尺寸增大以便允许更大的流量时,必须增大孔口以允许穿过阀座的流量更大。这种类型的止回阀具有有限的流量,尤其是在高频率和高流量时。当此孔口增大时,球尺寸因此也必须增大。当球尺寸增大时,质量也增大了,这需要更大的流体速度以保持球打开。阀元件的质量越大,阀响应就越慢。响应越慢,阀的最大操作频率就越低。在这种典型设计下耐久性是一个问题,因为止回阀的每一次致动都将重质量的球送入到阀座中。在多次致动后,会在孔口上沿密封带看到磨损。这种磨损有时会使孔口尺寸增大,从而降低流体跨过止回阀的可能的速度。导致性能的动态转变,这会负面地影响依赖于阀的性能的装置。
发明内容
根据示例实施例,这里公开了一种用于流体泵的阀组件,所述阀组件包括:阀体;入口盘,所述入口盘可移动地设置在所述阀体中;出口盘,所述出口盘可移动地设置在所述阀体中;以及阀座,所述阀座被固定在所述阀体内。所述阀座包括:第一孔口,所述第一孔口被限定为在所述阀座的径向中心部分中轴向地穿过所述阀座;以及一个或多个第二孔口,所述一个或多个第二孔口设置成至少部分地围绕所述第一孔口。所述入口盘被偏压成处于沿着所述阀座的第一表面抵靠所述阀座的闭合位置中,所述入口盘的闭合位置覆盖所述阀座的一个或多个第二孔口。所述出口盘被偏压成处于沿着所述阀座的第二表面抵靠所述阀座的闭合位置中。
所述阀座可包括沿着所述阀座的第一表面限定的凹槽,所述一个或多个第二孔口中的每一者设置在所述凹槽中。所述入口盘在处于所述闭合位置中时设置在所述凹槽之上并且覆盖所述凹槽。所述凹槽可具有环状形状,其具有在所述第一孔口与所述一个或多个第二孔口之间的径向内边缘。
在一个方面中,所述阀座包括从所述阀座的第二表面延伸的第一座环。所述第一座环设置在所述第一孔口与所述一个或多个第二孔口之间,并且形成所述阀座的第二表面。所述出口盘在处于所述闭合位置中时接触所述第一座环。出口弹簧可定位在所述阀体内以将所述出口盘偏压抵靠所述第一座环。所述第一座环可包括沿轴向方向延伸得比所述第一座环的其他部分更远的突起,所述出口盘在处于所述闭合位置中时接触所述突起。
所述阀座还可包括从所述阀座的第二表面延伸的第二座环。所述第一座环和所述第二座环可彼此同心,并且所述第二座环定位在所述一个或多个第二孔口的径向向外处。所述第一座环和所述第二座环由可压缩的弹力材料构造而成。
在另一方面中,入口室被至少部分地限定在所述第一座环与所述第二座环之间的空间中,泵室被至少部分地限定在所述第一孔口中以及所述第一座环内的在所述出口盘上游的空间内,所述出口室被限定在所述第一座环与所述出口盘之间的接触区域的下游。
所述阀组件还可包括止动线(stop wire),所述止动线设置成至少部分地围绕并且邻近于所述第二座环。所述止动线由不可压缩的材料构造而成,并且其尺寸被设计成以便限制所述第一座环和所述第二座环的压缩量。
在另一方面中,公开了一种用于流体泵阀组件的阀座,所述阀组件具有入口阀和出口阀。所述阀座包括:盘构件,所述盘构件具有:第一孔口,所述第一孔口被限定为在所述盘构件的径向中心部分中轴向地穿过所述盘构件;以及多个第二孔口,所述多个第二孔口设置成至少部分地围绕所述第一孔口并且被限定为轴向地穿过所述盘构件。所述第一孔口被构造成提供通向所述出口阀的流体路径,并且所述第二孔口被构造成提供通向所述入口阀的流体路径。
在一个方面中,环状凹槽被限定成沿着所述盘构件的表面,所述第二孔口设置在所述凹槽中,所述凹槽的径向内边缘在所述第一孔口的径向向外处。
在另一方面中,第一座环和第二座环沿着所述盘构件的表面设置并且从所述盘构件的表面延伸。所述第一座环和所述第二座环是同心的。所述第一座环和所述第二座环限定入口室的至少一部分,其用于穿过所述入口阀的流体,并且所述第二环限定出口室的至少一部分,其用于穿过所述出口阀的流体。
所述第一座环设置在所述第二孔口的径向向外处,并且所述第二座环设置在所述第一孔口与所述第二孔口之间。所述第一座环和所述第二座环由弹力的可压缩材料构造而成。
在另一方面中,所述第二座环包括沿着所述第二座环的轴向外表面的突起,使得所述突起从所述盘构件延伸得比所述第二座环的其他部分更远,所述突起限定用于所述出口阀的接触表面。所述突起沿着所述第二座环的径向内部分设置。
附图说明
图1是根据示例实施例的燃料泵的阀组的一部分的截面图;
图2是图1的燃料泵的阀组部分的放大透视图;
图3是图1的燃料泵的阀组部分的截面图;
图4是图1的阀组的阀座的透视俯视图;
图5是图1的阀组的阀座的透视仰视图;
图6是图1的阀组的阀座和入口盘的透视俯视图;
图7是其内具有图1的阀组的燃料泵的示意图;以及
图8是图1的阀组的止动线的俯视图。
具体实施方式
示例实施例通常涉及用于燃料泵的阀组或阀组件,燃料泵将燃料泵送到具有汽油燃烧发动机的设备(诸如,两轮或四轮车辆)的燃料管线中。燃料泵被构造成浸没在车辆或燃料泵作为其一部分的其他设备的燃料箱内。泵由所述设备的ECU控制。阀组包括具有组合式阀座的入口止回阀和出口止回阀。阀组操作性地连接到螺线管动力组或组件以形成燃料泵。
示例实施例涉及燃料泵的阀组。泵以适当的压力提供从燃料箱向燃料管线(未示出)“输送”的经过滤的、按体积计量的燃料。该“输送”的燃料使燃料管线保持处于适当的压力,以用于通向燃料管线的另一端的燃料喷射器(未示出)。这允许移除返回管线、管路过滤器(inline filter)和压力调节器。泵由电子控制单元(ECU)命令并且通常与也由ECU(未示出)控制的燃料喷射器的时序同步地运行,其在适当的时间致动以提供燃料。
要理解的是,本文中对“上游”和“下游”的引用是相对于燃料流动穿过阀组泵的方向而言的。
如图1至图3所示,阀组或阀组件12包括泵体25、衬套26、以及保护阀30,衬套26至少部分地设置于泵体25中并具有通孔,柱塞24在通孔中可移动地位移,并且保护阀30设置在泵体25内。柱塞24连接到螺线管动力组的衔铁(armature)(未示出),以使得保护阀30受到与阀组12连接的动力组的控制。泵体25包括限定在其内的燃料入口通路32(图1),经过保护阀30的流体在燃料入口通路32中流动。泵体25还包括一个或多个流体出口通路34,燃料在离开泵体25之前经过流体出口通路34。在燃料入口通路32和燃料出口通路34之间设置有入口盘36、阀座38和出口盘40。阀座38固定地设置在泵体25内。在图2和图3中最佳地看到的,入口盘36的一部分可移动地设置在衬套26和阀座38之间,并且出口盘40设置在阀座38的下游。出口弹簧42设置在泵体25内以使出口盘40偏压抵靠阀座38。入口盘36和阀座38用作阀组12的入口止回阀,并且出口盘40、出口弹簧42和阀座38用作阀组12的出口止回阀。
用于保持燃料的多个室在泵体25内。参照图1至图3,入口室44至少部分地形成在燃料入口通路32内位于入口盘36的上游。泵室46至少部分地限定在柱塞24设置于其中的衬套26的通孔内,并且包括在入口盘36下游以及在出口盘40上游的空间。出口室48设置在出口盘40的下游,并且至少部分地限定在燃料出口通路34内。
大体上柱形的柱塞24与衬套26的纵向轴线同轴地设置。为了减小或最小化泵室46的体积,在燃料泵操作的某些部分期间柱塞46的末端位于入口盘36的“止动”表面下方并且非常靠近阀座38,而在其他时间,柱塞46位于衬套的此类止动件26A上方并且处于与柱塞24配合的衬套26的紧密空隙内以在操作时形成“密封”。该密封通过具有相对小的直径间隙(例如,5-15微米)而形成,该直径间隙使得在压缩冲程期间燃料难以泄漏,但通过允许泵室46中的空气在不需要空气传送到燃料管线中的情况下离开而在燃料泵的灌注(priming)期间有帮助。
在图4和5中最佳地看到的,阀座38是由金属、塑料或类似刚性材料构造而成的盘或柱形构件。阀座38包括轴向限定或几乎轴向穿过阀座的多个孔口38A。在所图示的示例实施例中,孔口38A环绕阀座38的径向中心,并且绕该中心均匀分布。孔口38A的数量和尺寸可取决于阀组12的特定应用而变化。至少一个孔口38A设置在入口室44的正上方。从入口室44传送到泵室46的燃料穿过孔口38A,并且促使入口盘36的一部分远离阀座38,由此打开入口止回阀并形成进入到泵室46中的燃料路径。孔口38A环绕孔口38C,孔口38C被轴向地限定穿过阀座38的径向中心。孔口38C具有比孔口38A的直径更大的直径。
阀座38包括沿着阀座的上表面限定的相对浅的凹槽38D。每个孔口38A的下游端位于凹槽38D内。该凹槽38D至少具有孔口38A的宽度,并且围绕阀座38行进或延伸360度,确保每个孔口38A位于凹槽38D内。凹槽深度可变化,但通常不超过阀座38D自身厚度的一半。
阀座38的顶部是平坦的和/或平面的,并且具有抛光的完成面以有助于密封,因为入口盘36接触抛光区域。如在图6中最佳地示出的,入口盘36仅覆盖阀座38的顶表面的径向外部分以及孔口38A连同凹槽38D。孔口38C所位于的阀座38的径向中心部分未被入口盘36覆盖。阀座38和入口盘36之间的入口界接部是金属对金属的,并且两个部件都是平坦且光滑的以便提供密封。该入口盘36在凹槽38D的任一侧上与阀座38密封,因此入口盘36的大部分实际上不触碰阀座38。凹槽38D允许入口盘36和阀座38的顶部之间的减少的接触或最小接触,以及允许在阀组12的操作期间入口流体压力连通到入口盘36的显著区域,如下面更详细地讨论的。凹槽38D内的空间和孔口38A中的空间形成入口室44的一部分。
如图5所示,阀座38的底表面具有两个径向分开但同心的凸起的座环38B,座环38B模制到底表面上并且从底表面延伸。座环38B1是径向最外侧的座环38B,其结合在阀座38的外直径和孔口38A的螺栓圆周(bolt circle)之间。座环38B2结合在中心孔口38C和孔口38A之间。该座环38B具有沿着环的内直径添加的额外突起或唇部38E(图3),以便比座环38B2和座环38B1的其余部分沿轴向方向更加延伸远离入口盘36。沿着该突起38E的是平坦的圆形出口盘40接触阀座38的底部所处的位置。在图2和3中最佳地看到的,入口室44至少部分地限定在两个座环38B之间,并且泵室46部分地限定在处于中心孔口38C中的空间和处于内座环38B2内的空间中。环38由弹力的、弹性的和/或可压缩的材料(诸如,橡胶)构造而成。如图2和图3所示,座环38B2为出口盘40提供密封表面,并且座环38B1和38B2为阀体25内的壁提供密封表面,以便至少部分地限定入口室44和燃料入口通路32。
如所提到的,入口盘36的一部分能够在衬套26和阀座38之间位移。如图2和图3所示,衬套26包括止动件26A,当入口盘36与阀座38分离时,入口盘36的一部分接触抵靠止动件26A,这允许燃料从入口室44传送到泵室46。衬套26还包括台阶26B,在所图示的实施例中台阶26B设置在止动件26A的径向内侧,以便减小衬套26与入口盘36的接触表面,由此当入口盘36返回到其抵靠阀座38的位置时提供其更容易的分离。
参照图6,其描绘了处于堆叠布置的入口盘36和阀座38,入口盘36包括径向内部分36A以及径向外部分36B。在所图示的示例实施例中,外部分36B固定在阀体25内。在内部分36A和外部分36B之间连接有多个支腿36C。支腿36C在内部分36A和外部分36B之间延伸并且被构造成用作弹簧,以允许内部分36A相对于外部分36B抬升或以其他方式升高。在示例实施例中,在向操作性地联接到阀组12的动力组的螺线管通电期间,导致柱塞24移动远离阀座38,因此增加泵室46的尺寸并在入口室44与泵室46之间形成压力差。该压力差当超过与支腿36C相关联的偏压力时,导致入口盘36的内部分36A与阀座38分离并且朝向衬套26移动,由此允许燃料穿过孔口38A。随后,当螺线管断电时,柱塞24朝向阀座38移动以便减小泵室46的尺寸并且增加其内的压力,内部分36A移动远离衬套26并且返回到其与外部分36B基本处于同一平面的初始位置。在示例实施例中,一个或多个支腿36C的尺寸不同从而提供不对称弹簧,其中,内部分36A的第一区段在内部分36A的其他区段从阀座38抬升之前而被抬升远离阀座38,并且内部分36A的另一区段在内部分36A的其他区段从衬套26移动至阀座38之前而从衬套26移动至阀座38。在示例实施例中,每个支腿36C与每个其他支腿36C不同地被构造。
参照图1和图2,出口弹簧42容纳在形状类似于杯子的弹簧保持器52中。出口盘弹簧保持器52的内表面以大体上柱形形状开始,并且然后在保持器的底部上方的一距离处径向向内渐缩。由于出口弹簧保持器52的顶部也是出口阀的阀止动件(其设定出口盘40的行程),所以内表面的渐缩有助于使出口弹簧42居中并且防止弹簧被夹挤。出口弹簧保持器52的壁厚大部分是恒定的,并且内侧表面上的渐缩在外表面上也类似。在保持器52的外侧上的该表面渐缩确保了清楚地(clean)压配合到燃料出口通路34中的在阀体25的基部处的三个肋中。
在图2和3中最佳地看到的,阀组12还包括止动线50,止动线50是由不可压缩材料(诸如,金属或刚性塑料)构造而成的大体环形构件。止动线50设置在阀体25中处于阀座38的径向外端处,使得止动线50被设置成邻近于座环38B1并且在其径向外侧。止动线50的直径的尺寸类似于座环38B1的轴向延伸的量,诸如具有略小于此轴向延伸的直径。在止动线50由不可压缩材料构造而成的情况下,止动线50用于限制座环38B1和38B2的压缩量。尽管附图将止动环50描绘为具有圆形截面,但要理解的是,止动环可具有不同的截面形状。
如在图8中示出的,止动线50大体上是环形的。在示例实施例中,止动线50包括径向间隙或空间50A,使得止动线50具有半环状或接近环状的形状。止动线50设置在阀体25中,使得阀体25中的(诸如燃料进口通路32中的)任何捕获的空气气泡能够穿过间隙50A并且进入泵室46并从阀组件排出,其诸如穿过出口室48和流体外通路34,或穿过上面所讨论的在衬套26和柱塞24之间的间隙。
在燃料泵的正常操作期间,通过向螺线管施加电流来致动螺线管动力组,这建立了电流产生的磁力,磁力开始移动与柱塞24连接的动力组的衔铁。柱塞24移动远离阀座38,这增加了泵室46的尺寸并且降低了其内的压力。泵室46中的较低压力跨过入口盘36形成差别压力。面向入口盘36并且与其相邻的阀座38上的浅凹槽38D允许入口室44的压力被连通到大的表面区域,从而增加差别压力并且帮助阀组12抵抗粘性驱动的粘滞作用(stiction),该粘性驱动的粘滞作用将减缓入口盘36与阀座38的分离。一旦跨过入口盘36的差别压力超出盘的内部弹簧(即,支腿36C)将盘36抵靠座38保持在入口止回阀的密封位置中的能力时,入口盘36将打开,内部分36A从阀座38抬升。特别地,跨过入口盘36的差别压力在由支腿36C形成的非对称弹簧的刚性最低的位置处抬升入口盘36的内部分36A,以便触发脱离效果并且改善入口盘36的打开时间的可重复性以及缩短该打开时间。为了进一步利用入口盘36的非对称性,该盘上的非对称弹簧部分的最弱/刚性最低点的径向位置被标记有凹口36D。该凹口36D用于将入口盘36定向成使盘的刚性最低的部分对准成位于供给入口室44的燃料入口通路32的正上方。这允许直接来自保护阀30的燃料具有通过阀座38上的流动孔口38A的大体上直的路径,以及允许直接来自保护阀30的燃料冲击在入口盘36上,从而提供入口盘36的更大分离,这减少了填充泵室46所需的时间。使入口室44利用设置有燃料泵的燃料箱来达到压力稳定可能耗费了循环的整个其余部分。在完成衔铁和柱塞24的完整行程之后,螺线管保持激活/通电达一小段时间,以便允许泵室46完全填充。随着泵室46的压力接近入口室44的压力,进入的燃料速度降低。当进入的燃料的动量充分减小时,入口盘36的内部分36A从衬套26的止动件26A脱离并返回到阀座38,这阻止进入的燃料流动到泵室46中,止动件26A在台阶26B处呈台阶状以减小衬套26与入口盘36的接触表面,这是由于入口盘36的支腿36C的非对称的刚性特性。
当螺线管动力组断电并且螺线管中的磁场衰减时,螺线管的衔铁被校准弹簧推压,并且柱塞24的所产生的运动增加了泵室46中的压力。当泵室46和出口室48之间的差别压力超出出口阀弹簧42的负载时,出口盘40与阀座38上的座环38B2的突起38E分离,并且燃料从泵室46流动到出口室48中。离开泵室46的燃料流在到达燃料出口端口之前转动90度,其向低质量出口盘40施加动量。添加被设计用以使出口盘40移动的力以允许在小于1毫秒内的完全流动,燃料流被推压穿过出口盘40的外直径和阀体25的壁之间的小环形域(annulus)以形成高速,这利用了薄的锋利边缘出口盘40的高曳引(drag)系数的优点。这种曳引和传递动量导致出口盘40的几乎数字式(打开/关闭)运动。当出口盘40被迫使离开阀座环38B2时,力将势能添加到出口弹簧42中。离开泵100的燃料在通往出口端口并进入到燃料管线中的途中穿过三个燃料出口通路34(图1)。在出口弹簧保持器52的基部处还有一个小孔,其允许保持器内侧和外侧的压力均衡,同时出口盘40被迫使抵靠保持器52的边缘或顶部处的止动件。压力的这种均衡减小了出口盘42与出口弹簧保持器52的边缘和/或出口盘止动件的分离时间。出口盘止动件还具有小的接触区域以减少出口盘40和止动件之间的流体粘滞作用,从而进一步改善分离时间和一致性。当燃料离开出口室48时,柱塞24接近阀座38。
图7是图示出具有联接到阀组12的螺线管动力组或组件100的流体泵10的框图。在所图示的示例实施例中,流体泵10是燃料泵,但是要理解的是,流体泵10可用于在其他应用中泵送其他流体。阀组12操作性地连接到螺线管动力组100以用于将燃料从阀组12的流体入口302泵送到流体出口304。流体出口304被构造成连接到流体管线(未示出)以用于在压力下供应流体。ECU(未示出)控制螺线管动力组100以使其内的衔铁以往复方式移动,这导致燃料经由入口室44和入口阀从流体入口302流动到泵室46,并且经由出口室48和出口阀从泵室46流动到流体出口304,如上面所描述的那样。螺线管动力组100和流体泵10的特定特征可包括在上面的交叉引用部分中指出的美国专利申请中描述的特征。
示例实施例在以高频操作并且基于使用入口和出口止回式阀的正排量泵的原理工作的其他流体泵送应用中将是非常有用的。上面所描述的阀构造允许非常紧凑的阀组12以及对于非常高的流量具有相对小的位移的燃料泵100。空间有限的任何泵送应用将非常适合于所公开的实施例。
阀座38可由模制塑料构造而成,该模制塑料具有将座环38B模制到塑料的二次加工。阀座38可被光刻并具有用于孔口38A和/或38C的模制橡胶密封环的二次加工。阀座38可被冲压或压印并具有对橡胶进行模制以形成密封环的二次加工。
阀座38可沿着座的顶部的外直径凸起或偏移。这允许入口盘36在不同高度处被夹持到阀座38。
阀座38可类似于上面所描述的内容来被制造,但是作为在座的入口侧上具有金属对金属的密封界接部的替代,橡胶模制工艺可将橡胶添加到给定高度的每个孔口38A的外直径。阀座38的平坦度不需要被严格控制,因为围绕每个孔口38A的橡胶环可顺应以容易地抵靠入口盘36进行密封。当孔口38A的密封表面凸起时,入口盘36可仍然与阀座38齐平。这意味着入口盘36被弹簧加载抵靠橡胶入口,其给予燃料泵10入口开启(inlet cracking)压力。该高度可被调节以便将入口盘的开启压力调节到所期望的数值。
在某些情形或设计中,需要控制穿过入口的一定量的泄漏。在该情况中,能够对阀座的顶部进行二次磨削加工。例如,从盘的正中心开始的径向凹槽能够被磨削到阀座上,该径向凹槽朝向盘的外侧围绕该部件延伸360度。由磨削导致的凹槽的深度能够被改变以便使泄漏最小化。这在你控制跨过入口盘和阀座之间的密封表面的沿期望方向的泄漏时是有帮助的。
本文中已经以说明性的方式描述了示例实施例,并且要理解的是,已经使用的术语旨在具有描述性词语而不是限制性词语的性质。显然,根据上述教导,本发明的许多改进例和变型例都是可能的。以上描述本质上仅是示例性的,并且因此,在不偏离如所附权利要求中限定的本发明的精神和范围的情况下可根据其做出变型例。
Claims (19)
1.一种用于流体泵的阀组件,包括:
阀体;
入口盘,所述入口盘可移动地设置在所述阀体中;
出口盘,所述出口盘可移动地设置在所述阀体中;以及
阀座,所述阀座被固定在所述阀体内,并且包括:第一孔口,所述第一孔口被限定为在所述阀座的径向中心部分中轴向地穿过所述阀座;以及一个或多个第二孔口,所述一个或多个第二孔口设置成至少部分地围绕所述第一孔口,
其中,所述入口盘被偏压成处于沿着所述阀座的第一表面抵靠所述阀座的闭合位置中,所述入口盘的闭合位置覆盖所述阀座的一个或多个第二孔口,并且
其中,所述出口盘被偏压成处于沿着所述阀座的第二表面抵靠所述阀座的闭合位置中,
其中,所述阀座包括所述第一孔口和所述一个或多个第二孔口从中轴向延伸穿过的盘,
其中,所述阀座包括沿着所述阀座的第一表面限定的凹槽,所述一个或多个第二孔口中的每一者设置在所述凹槽中,其中,每个第二孔口的下游端位于所述凹槽内,
其中,所述入口盘在处于所述闭合位置中时设置在所述凹槽之上并且覆盖所述凹槽。
2.根据权利要求1所述的阀组件,其中,所述阀座包括围绕所述第一孔口设置的多个第二孔口。
3.根据权利要求1所述的阀组件,其中,所述凹槽具有环状形状,其具有在所述第一孔口与所述一个或多个第二孔口之间的径向内边缘。
4.根据权利要求1所述的阀组件,其中,所述阀座包括从所述阀座的第二表面延伸的第一座环,所述第一座环设置在所述第一孔口与所述一个或多个第二孔口之间,并且形成所述阀座的第二表面。
5.根据权利要求4所述的阀组件,其中,所述出口盘在处于所述闭合位置中时接触所述第一座环。
6.根据权利要求5所述的阀组件,还包括出口弹簧,所述出口弹簧定位在所述阀体内以将所述出口盘偏压抵靠所述第一座环。
7.根据权利要求5所述的阀组件,其中,所述第一座环包括沿轴向方向延伸得比所述第一座环的其他部分更远的突起,所述出口盘在处于所述闭合位置中时接触所述突起。
8.根据权利要求4所述的阀组件,其中,所述阀座还包括从所述阀座的第二表面延伸的第二座环,所述第一座环和所述第二座环彼此同心,并且所述第二座环定位在所述一个或多个第二孔口的径向向外处。
9.根据权利要求8所述的阀组件,还包括:入口室,所述入口室被至少部分地限定在所述第一座环与所述第二座环之间的空间中;泵室,所述泵室被至少部分地限定在所述第一孔口中以及所述第一座环内的在所述出口盘上游的空间内;以及出口室,所述出口室被限定在所述第一座环与所述出口盘之间的接触区域的下游。
10.根据权利要求8所述的阀组件,其中,所述第一座环和所述第二座环由可压缩的弹力材料构造而成。
11.根据权利要求10所述的阀组件,还包括止动线,所述止动线设置成至少部分地围绕并且邻近于所述第二座环,所述止动线由不可压缩的材料构造而成,并且其尺寸被设计成以便限制所述第一座环和所述第二座环的压缩量。
12.一种用于流体泵阀组件的阀座,所述阀组件具有入口阀和出口阀,所述阀座包括:
盘构件,所述盘构件具有:第一孔口,所述第一孔口被限定为在所述盘构件的径向中心部分中轴向地穿过所述盘构件;以及多个第二孔口,所述多个第二孔口设置成至少部分地围绕所述第一孔口并且被限定为轴向地穿过所述盘构件,所述第一孔口被构造成提供通向所述出口阀的流体路径,并且所述第二孔口被构造成提供通向所述入口阀的流体路径,以及
沿着所述盘构件的表面限定的环状凹槽,所述第二孔口设置在所述凹槽中,所述凹槽的径向内边缘在所述第一孔口的径向向外处,其中,每个第二孔口的下游端位于所述凹槽内。
13.根据权利要求12所述的阀座,所述阀座包括围绕所述第一孔口设置的多个第二孔口。
14.根据权利要求12所述的阀座,还包括第一座环和第二座环,所述第一座环和所述第二座环沿着所述盘构件的表面设置并且从所述盘构件的表面延伸,所述第一座环和所述第二座环是同心的,其中,所述第一座环和所述第二座环限定入口室的至少一部分,其用于穿过所述入口阀的流体,并且所述第二座 环限定出口室的至少一部分,其用于穿过所述出口阀的流体。
15.根据权利要求14所述的阀座,其中,所述第一座环设置在所述第二孔口的径向向外处,并且所述第二座环设置在所述第一孔口与所述第二孔口之间。
16.根据权利要求14所述的阀座,其中,所述第一座环和所述第二座环由弹力的可压缩材料构造而成。
17.根据权利要求16所述的阀座,还包括止动线,所述止动线设置成至少部分地围绕并且邻近于所述第二座环,所述止动线由不可压缩的材料构造而成,并且其尺寸设计成以便限制所述第一座环和所述第二座环的压缩量。
18.根据权利要求15所述的阀座,其中,所述第二座环包括沿着所述第二座环的轴向外表面的突起,使得所述突起从所述盘构件延伸得比所述第二座环的其他部分更远,所述突起限定用于所述出口阀的接触表面。
19.根据权利要求18所述的阀座,其中,所述突起沿着所述第二座环的径向内部分设置。
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CN201810718453.6A Active CN109210246B (zh) | 2017-07-03 | 2018-07-03 | 组合式入口和出口止回阀座 |
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CN109215933B (zh) | 2021-09-03 |
CN109215933A (zh) | 2019-01-15 |
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US10982634B2 (en) | 2021-04-20 |
US11035491B2 (en) | 2021-06-15 |
CN109306926B (zh) | 2021-04-20 |
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CN111630271A (zh) | 2020-09-04 |
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US11105437B2 (en) | 2021-08-31 |
CN109215932B (zh) | 2021-08-17 |
WO2019010206A1 (en) | 2019-01-10 |
CN111542693A (zh) | 2020-08-14 |
CN111630271B (zh) | 2022-09-27 |
CN111542693B (zh) | 2022-04-19 |
CN109210246A (zh) | 2019-01-15 |
US11231032B2 (en) | 2022-01-25 |
US20190003605A1 (en) | 2019-01-03 |
US10883458B2 (en) | 2021-01-05 |
US20190003474A1 (en) | 2019-01-03 |
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