公开(公告)号：US09388810B2

公开(公告)日：2016-07-12

申请号：US14351002

申请日：2012-10-10

Applicant: VHIT S.P.A.

Inventor： Antonio Crotti ,  Luciano Marchetti ,  Fabio Martello ,  Johannes Muellers

IPC: F04C29/02 ,  F04C25/02 ,  F04C18/344 ,  F04C27/00

CPC classification number: F04C29/02 ,  F04C18/344 ,  F04C25/02 ,  F04C27/009 ,  F04C2240/30 ,  F04C2240/54

Abstract: A rotary vacuum pump, for instance a vane pump, has at least one circumferential groove (6) between facing side surfaces of the rotor (2) and of the rotor guide (3) for receiving a lubricating and sealing fluid. The circumferential groove (6) is a partial annular groove, which has an angular extension of less than 360° and has at least one interruption enabling creating a hydrodynamic fluid bearing in a region opposite a discharge region of the pump (1; 101; 121; 201), over the whole axial extension of the facing surfaces. A method of lubricating a rotary vacuum pump is also provided.

Abstract translation: 旋转式真空泵（例如叶片泵）在转子（2）和转子导向件（3）的相对侧表面之间具有至少一个周向槽（6），用于容纳润滑和密封流体。 周向槽（6）是部分环形槽，其具有小于360°的角度延伸，并且具有至少一个中断，使得能够在与泵（1; 101; 121）的排出区域相对的区域中产生流体动力流体轴承 ; 201），在面对表面的整个轴向延伸。 还提供了一种润滑旋转真空泵的方法。

公开(公告)号：US20140341767A1

公开(公告)日：2014-11-20

申请号：US14351002

申请日：2012-10-10

Applicant: VHIT S.P.A.

Inventor： Antonio Crotti ,  Luciano Marchetti ,  Fabio Martello ,  Johannes Muellers

IPC: F04C29/02

CPC classification number: F04C29/02 ,  F04C18/344 ,  F04C25/02 ,  F04C27/009 ,  F04C2240/30 ,  F04C2240/54

Abstract: A rotary vacuum pump, for instance a vane pump, has at least one circumferential groove (6) between facing side surfaces of the rotor (2) and of the rotor guide (3) for receiving a lubricating and sealing fluid. The circumferential groove (6) is a partial annular groove, which has an angular extension of less than 360° and has at least one interruption enabling creating a hydrodynamic fluid bearing in a region opposite a discharge region of the pump (1; 101; 121; 201), over the whole axial extension of the facing surfaces. A method of lubricating a rotary vacuum pump is also provided.

Abstract translation: 旋转式真空泵（例如叶片泵）在转子（2）和转子导向件（3）的相对侧表面之间具有至少一个周向槽（6），用于容纳润滑和密封流体。 周向槽（6）是部分环形槽，其具有小于360°的角度延伸，并且具有至少一个中断，使得能够在与泵（1; 101; 121）的排放区域相对的区域中产生流体动力流体轴承 ; 201），在面对表面的整个轴向延伸。 还提供了一种润滑旋转真空泵的方法。