公开(公告)号：US10094385B2

公开(公告)日：2018-10-09

申请号：US14882750

申请日：2015-10-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Steen Mikkelsen ,  Carl-Christian Danielsen

IPC: F04D17/12 ,  F04D1/06 ,  F04D29/42 ,  F04D29/62 ,  F04D13/02

Abstract: A multistage centrifugal pump includes a foot part (1) and a head part (7), between which several pump stages are arranged. Each of the pump stages includes an impeller (4) and a housing (5) surrounding the impeller (4). The housings (5) are arranged over one another. The housings (5) together with an outer casing (9) form an annular channel (8). The housings (5) together with an outer casing (9) are clamped via clamping bolts (11) which are fastened on the head part (7) and the foot part (1). The clamping bolts (11) are arranged within the annular channel (8).

公开(公告)号：US10027199B2

公开(公告)日：2018-07-17

申请号：US14655374

申请日：2013-12-20

Applicant: GRUNDFOS HOLDING A/S

Inventor： Christian Schuldt ,  Carl-Christian Danielsen

IPC: H02K5/22 ,  F04D13/06 ,  F04D29/58 ,  F04D25/06 ,  F04D29/18 ,  F04D29/26 ,  F04D29/40 ,  H02K11/30 ,  H02K11/33

Abstract: A pump assembly with an electric motor which includes a stator housing (6) and an electronics housing (4; 50) fastened at the outside on the stator housing (6). The electronics housing (4; 50) is connected to the stator housing (6) via at least one fastening element (24, 24′; 56). The fastening element is situated within an outer contour of the electronics housing (4; 50) which is delimited by the outer walls of the electronics housing (4; 50) and is accessible even with a closed electronics housing (4; 50).