公开(公告)号：US20180051564A1

公开(公告)日：2018-02-22

申请号：US15557111

申请日：2016-03-31

申请人： EBM-PAPST ST. GEORGEN GmbH & Co. KG

发明人： Markus BRAXMAIER ,  Hassan GHODSI-KHAMENEH ,  Daniel HAUER ,  Juergen HERR ,  Marc JEUCK ,  Gerhard KUHNERT ,  Wolfgang LAUFER ,  Mario STAIGER

IPC分类号： F01C5/02 ,  F04B43/10

CPC分类号： F01C5/02 ,  F01N2610/1406 ,  F01N2610/1433 ,  F04B43/10 ,  F04C5/00 ,  F04C2240/30

摘要： The invention relates to a pump device for pumping a liquid, comprising a hydraulics housing (12, 212), in which a pump ring (14, 214), a pump ring support (16, 216) and an eccentric (18), which can be driven by a shaft (20), are accommodated. The hydraulics housing (12, 212) has an annular portion (22, 222) and a first and a second lateral section (24, 26, 224), the two lateral sections (24, 26,224) being arranged opposite each other. The pump ring (14, 214) is mounted between the two lateral sections (24, 26, 224) of the hydraulics housing (12, 212) at least in some portions. On a side facing away from the pump ring support (16, 216), two first projections (28, 228), which run in the axial direction of the shaft (20), are each in contact with one of the two lateral sections (24, 26, 224).

公开(公告)号：US20180045049A1

公开(公告)日：2018-02-15

申请号：US15557124

申请日：2016-03-31

申请人： EBM-PAPST ST. GEORGEN GMBH & CO. KG

发明人： Markus BRAXMAIER ,  Daniel HAUER ,  Hassan GHODSI-KHAMENEH ,  Juergen HERR ,  Marc JEUCK ,  Wolfgang LAUFER ,  Mario STAIGER

IPC分类号： F01C5/02 ,  F04C5/00

摘要： The invention relates to a pump device for pumping a liquid, comprising a hydraulics housing (12), in which a pump ring (14) with a contact surface (46), a pump ring support (16) and an eccentric (18), which can be driven by a shaft (20), are accommodated, said shaft defining an axial and a radial direction. The hydraulics housing (12) has an annular portion (22) and a first and a second lateral section (24, 26), the two lateral sections (24, 26) being arranged opposite each other. The pump ring (14) is mounted between the two lateral sections (24, 26) of the hydraulics housing (12) at least in some portions. The profile of the contact surface (46) has a contour with a curvature that changes at least in portions, and specifically in such a way that the curvature increases at least in some portions towards the ends of the contact surface (46).