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公开(公告)号：EP2112379A3
公开(公告)日：2015-02-18
申请号：EP09158760.0
申请日：2009-04-24
CPC分类号： F04C14/226 , F01C21/0836 , F04C2/3442 , F04C15/06 , F04C2250/102
摘要： A variable displacement vane pump which includes an enhanced discharge port (140,152). The enhanced discharge port reduces areas of high pressure in the discharge port (140) which would otherwise occur as the pressurized working fluid reverses its direction of flow to enter the discharge port (140). By reducing the areas of high pressure, the back torque on the pump rotor (108) is reduced and the energy efficiency of the pump is enhanced. In one embodiment, the pivot (120) for the pump control ring (116) is located radially outwardly from a conventional location, to allow for a discharge recess (152) to be formed in the control ring (116), adjacent the discharge port (140), and extending past the pivot (120) to the pump outlet. In a second embodiment, the discharge recess (152) is formed in the control ring (208) around the pivot (120) and a seal (216) is provided on the control ring to inhibit leakage of pressurized working fluid past the control ring. In a third embodiment, a secondary discharge port (312) is provided adjacent the discharge recess (308) formed in the control ring (304) and pressurized working fluid in the discharge recess can exit the discharge recess through the secondary discharge port which is in fluid communication with the pump outlet.
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2.发明公开Variable displacement vane pump with enhanced discharge port 审中-公开Flügelpumpemit regelbarerVerdrängungund erweitertem Auslaufstutzen
公开(公告)号：EP2112379A2
公开(公告)日：2009-10-28
申请号：EP09158760.0
申请日：2009-04-24
CPC分类号： F04C14/226 , F01C21/0836 , F04C2/3442 , F04C15/06 , F04C2250/102
摘要： A variable displacement vane pump which includes an enhanced discharge port. The enhanced discharge port reduces areas of high pressure in the discharge port which would otherwise occur as the pressurized working fluid reverses its direction of flow to enter the discharge port. By reducing the areas of high pressure, the back torque on the pump rotor is reduced and the energy efficiency of the pump is enhanced. In one embodiment, the pivot for the pump control ring is located radially outwardly from a conventional location, to allow for a discharge recess to be formed in the control ring, adjacent the discharge port, and extending past the pivot to the pump outlet. In a second embodiment, the discharge recess is formed in the control ring around the pivot and a seal is provided on the control ring to inhibit leakage of pressurized working fluid past the control ring. In a third embodiment, a secondary discharge port is provided adjacent the discharge recess formed in the control ring and pressurized working fluid in the discharge recess can exit the discharge recess through the secondary discharge port which is in fluid communication with the pump outlet.
摘要翻译： 一种可变排量叶片泵，其包括增强的排出口（140,152）。 增强的排出口减少了排出口（140）中的高压区域，否则当加压工作流体反转其流动方向进入排放口（140）时将会发生。 通过减小高压区域，减小了泵转子（108）上的反向扭矩并提高了泵的能量效率。 在一个实施例中，用于泵控制环（116）的枢轴（120）从常规位置径向向外定位，以允许在控制环（116）中形成排出凹部（152），邻近排出口 （140），并且延伸穿过所述枢轴（120）到所述泵出口。 在第二实施例中，在控制环（208）中围绕枢轴（120）形成排放凹槽（152），并且在控制环上提供密封件（216），以防止加压工作流体经过控制环的泄漏。 在第三实施例中，在形成在控制环（304）中的排出凹部（308）附近设置有二次排出口（312），并且排出凹部中的加压工作流体可以通过二次排出口离开排出凹部 与泵出口的流体连通。
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公开(公告)号：EP3165769B1
公开(公告)日：2018-12-12
申请号：EP16204586.8
申请日：2005-12-21
CPC分类号： F04C2/04 , F04C2/344 , F04C14/226
摘要： The invention relates to a method of operating a variable capacity pump at at least two selectable equilibrium pressures. The pump comprises a first control chamber, a second control chamber, a pump control ring pivotable to alter the capacity of the pump, and a return spring biasing the pump control ring towards a position of maximum volumetric capacity. The method comprises the following steps: Supplying pressurized fluid to the first control chamber to create a force on the pump control ring such that the force pivots the pump control ring to reduce the volumetric capacity of the pump, wherein the return spring acts against the pivoting force of the first control chamber to establish an equilibrium pressure; and selectively supplying pressurized fluid to the second control chamber to create a force on the pump control ring such that the force pivots the pump control ring to reduce the volumetric capacity of the pump, wherein the return spring acts against the pivoting force of the first and second control chambers to establish a new, lower, equilibrium pressure.
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公开(公告)号：EP2112379B1
公开(公告)日：2018-08-15
申请号：EP09158760.0
申请日：2009-04-24
CPC分类号： F04C14/226 , F01C21/0836 , F04C2/3442 , F04C15/06 , F04C2250/102
摘要： A variable displacement vane pump which includes an enhanced discharge port (140,152). The enhanced discharge port reduces areas of high pressure in the discharge port (140) which would otherwise occur as the pressurized working fluid reverses its direction of flow to enter the discharge port (140). By reducing the areas of high pressure, the back torque on the pump rotor (108) is reduced and the energy efficiency of the pump is enhanced. In one embodiment, the pivot (120) for the pump control ring (116) is located radially outwardly from a conventional location, to allow for a discharge recess (152) to be formed in the control ring (116), adjacent the discharge port (140), and extending past the pivot (120) to the pump outlet. In a second embodiment, the discharge recess (152) is formed in the control ring (208) around the pivot (120) and a seal (216) is provided on the control ring to inhibit leakage of pressurized working fluid past the control ring. In a third embodiment, a secondary discharge port (312) is provided adjacent the discharge recess (308) formed in the control ring (304) and pressurized working fluid in the discharge recess can exit the discharge recess through the secondary discharge port which is in fluid communication with the pump outlet.
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公开(公告)号：EP3165769A1
公开(公告)日：2017-05-10
申请号：EP16204586.8
申请日：2005-12-21
CPC分类号： F04C2/04 , F04C2/344 , F04C14/226
摘要： The invention relates to a method of operating a variable capacity pump at at least two selectable equilibrium pressures. The pump comprises a first control chamber, a second control chamber, a pump control ring pivotable to alter the capacity of the pump, and a return spring biasing the pump control ring towards a position of maximum volumetric capacity. The method comprises the following steps:
Supplying pressurized fluid to the first control chamber to create a force on the pump control ring such that the force pivots the pump control ring to reduce the volumetric capacity of the pump, wherein the return spring acts against the pivoting force of the first control chamber to establish an equilibrium pressure; and selectively supplying pressurized fluid to the second control chamber to create a force on the pump control ring such that the force pivots the pump control ring to reduce the volumetric capacity of the pump, wherein the return spring acts against the pivoting force of the first and second control chambers to establish a new, lower, equilibrium pressure.摘要翻译： 本发明涉及一种在至少两个可选择的平衡压力下操作可变容量泵的方法。 泵包括第一控制室，第二控制室，可枢转以改变泵的容量的泵控制环以及将泵控制环偏向最大容积位置的复位弹簧。 该方法包括以下步骤：向第一控制室供应加压流体以在泵控制环上产生力，使得该力枢转泵控制环以减小泵的体积容量，其中，回位弹簧抵抗枢转 第一控制室的力建立平衡压力; 以及选择性地将加压流体供应到第二控制腔室以在泵控制环上产生力，使得该力枢转泵控制环以减小泵的体积容量，其中该返回弹簧抵抗第一和第二控制环的枢转力 第二控制室建立一个新的，较低的平衡压力。
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