公开(公告)号：US20080025862A1

公开(公告)日：2008-01-31

申请号：US11716296

申请日：2007-03-09

申请人： Markus Hanst ,  Martin Korn ,  Jorg Weissgarber ,  Christof Harle ,  Christof Lamparski

发明人： Markus Hanst ,  Martin Korn ,  Jorg Weissgarber ,  Christof Harle ,  Christof Lamparski

IPC分类号： F01C1/18

CPC分类号： F04C2/088 ,  F04C2/18 ,  F04C14/185

摘要： An external toothed wheel pump, comprising a delivery chamber comprising an inlet and an outlet for a fluid; a first feed wheel and a second feed wheel which can be rotationally driven for delivering the fluid and are in a toothed engagement with each other which separates the outlet from the inlet; and sealing surfaces which axially face the feed wheels and form axial sealing gaps with the feed wheels, wherein at least one of the sealing surfaces comprises a relieving pocket on a high-pressure side of the delivery chamber only and except for the relieving pocket, extends circumferentially up to at least the root circle and tip circle of the axially facing feed wheel.

摘要翻译： 一个外齿轮泵，包括一个输送室，它包括一个用于流体的入口和出口; 第一进料轮和第二进料轮，其可被旋转地驱动以输送流体，并且彼此啮合，将出口与入口分离; 以及密封表面，所述密封表面轴向地面对所述进给轮并且与所述进给轮形成轴向密封间隙，其中所述密封表面中的至少一个仅包括在所述输送室的高压侧上并且除了所述释放口袋之外的释放袋 沿圆周方向至少到轴向面对的进给轮的根圆和尖端圆。