公开(公告)号：US11879474B2

公开(公告)日：2024-01-23

申请号：US17722900

申请日：2022-04-18

Applicant: GRUNDFOS HOLDING A/S

Inventor： Martin Bang Kristensen ,  Tom Jæger ,  Patrick Pradel ,  Joseph Arnold White ,  Richard James Bibb

IPC: F04D29/22 ,  F04D1/06 ,  F04D17/12 ,  F04D29/043 ,  F04D29/08 ,  F04D29/42 ,  F04D29/58

CPC classification number: F04D29/22 ,  F04D1/063 ,  F04D17/12 ,  F04D29/043 ,  F04D29/083 ,  F04D29/4206 ,  F04D29/584 ,  F04D29/5806

Abstract: A centrifugal pump assembly includes a pump head, a pump base defining a pump inlet and a pump outlet, a fluid outlet channel from the pump head to the pump outlet, impellers, defining an impeller fluid channel between an impeller inlet and outlet and connected with one of rotor shaft segments including a positive fit coupling for torque transfer between at least two rotor shaft segments, and one or more pump stage housing segments arranged between the pump base and the pump head. The pump stage housing segments have a structure defining a guide passage for receiving pumped fluid from the impeller outlet of the impellers and for guiding pumped fluid to the impeller inlet of another one of the impellers or to the pump head. The pump stage housing segments each have a structure defining at least a part of a wall section of the fluid outlet channel.