公开(公告)号：US20150176584A1

公开(公告)日：2015-06-25

申请号：US14411701

申请日：2013-06-10

Applicant: Edwards Limited

Inventor： Nigel Paul Schofield

IPC: F04C27/00 ,  F04C18/02

CPC classification number: F04C27/005 ,  F01C19/08 ,  F04C18/0215 ,  F04C27/008 ,  F04C2240/807

Abstract: The present invention provides a scroll pump comprising: a scroll mechanism having an orbiting scroll and a fixed scroll; a drive shaft having a concentric shaft portion and an eccentric shaft portion connected to the orbiting scroll. The shaft is arranged to be driven by a motor so that rotation of the shaft imparts an orbiting motion to the orbiting scroll relative to the fixed scroll for pumping fluid along a flow path from an inlet to an outlet of the scroll mechanism. An axial lip seal is located between the orbiting scroll and the fixed scroll for resisting leakage of fluid from outside the scroll mechanism into the flow path.

Abstract translation: 本发明提供一种涡旋泵，包括：涡旋机构，其具有绕动涡旋件和固定涡旋件; 具有同心轴部分的驱动轴和连接到绕动涡卷的偏心轴部分。 轴被布置成由电动机驱动，使得轴的旋转相对于固定涡旋件给予绕动涡旋件的轨道运动，用于沿着从涡旋机构的入口到出口的流动路径泵送流体。 轴向唇形密封件位于绕动涡旋件和固定涡旋件之间，用于阻止流体从涡旋机构外部泄漏到流动路径中。