公开(公告)号：US20160084253A1

公开(公告)日：2016-03-24

申请号：US14892774

申请日：2014-04-29

Applicant: GRUNDFOS HOLDING A/S

Inventor： Bjarne VINTHER TOFT ,  Aage BRUHN

IPC: F04D1/10 ,  F04D13/06 ,  F04D15/00 ,  F04D29/70 ,  F04D29/043 ,  F04D29/44 ,  F04D29/42 ,  F04D9/02 ,  F04D29/22

CPC classification number: F04D1/10 ,  F04D1/063 ,  F04D9/003 ,  F04D9/02 ,  F04D13/06 ,  F04D15/0011 ,  F04D29/043 ,  F04D29/22 ,  F04D29/426 ,  F04D29/445 ,  F04D29/70

Abstract: A multi-stage, self-priming centrifugal pump assembly includes at least two pump stages (4) which are consecutive in a main flow direction (32), and a backflow channel (13) which lies parallel to at least one a pump stage (4). The backflow channel (13) runs out downstream of the first or a further pump stage (4), in the main flow direction (32).

Abstract translation: 多级自吸离心泵组件包括在主流动方向（32）上连续的至少两个泵级（4）和平行于至少一个泵级的回流通道（13） 4）。 回流通道（13）在主流动方向（32）上延伸出第一或另外的泵级（4）的下游。

公开(公告)号：US20170107986A1

公开(公告)日：2017-04-20

申请号：US15292535

申请日：2016-10-13

Applicant: GRUNDFOS HOLDING A/S

Inventor： Bjarne VINTHER TOFT

IPC: F04D13/06 ,  F04D29/42 ,  F04D17/08

CPC classification number: F04D13/0686 ,  F04D13/06 ,  F04D13/16 ,  F04D17/08 ,  F04D29/026 ,  F04D29/4273 ,  F04D29/4293 ,  F04D29/628 ,  F05D2250/52 ,  F05D2300/43

Abstract: A water supply system includes a water inlet connection (12), a water outlet connection (28), a centrifugal pump (3), an electric motor (5), an electrical/electronic control and a diaphragm tank (30). The centrifugal pump (3) and the diaphragm tank (30) are arranged above one another and are connected to one another via a construction unit (6). The construction unit (6) includes the water connections (12, 28), the conduit connections between the water connections (12, 28) and the pump (3), as well as a threaded connection piece (29) for the diaphragm tank (30).