公开(公告)号：EP2420678B2

公开(公告)日：2018-08-15

申请号：EP10008738.6

申请日：2010-08-21

Applicant: Grundfos Management A/S

Inventor： Rasmussen, Svend ,  Jepsen, Troels ,  Stenholt Laursen, Pia ,  Jensen, Finn

IPC: F04D15/00 ,  F04D29/22 ,  F04D29/24 ,  F04D25/06 ,  F04D13/06

CPC classification number: F04D13/06 ,  F04D15/0033 ,  F04D25/06 ,  F04D29/2261 ,  F04D29/245

Abstract: A centrifugal pump having at least one impeller (32), a pump housing and an electrical motor. The pump has a Q-H pump curve (4) having a head Ho (28) at zero flow and a head H ref (30) corresponding to the highest hydraulic power and that H ref (30) is greater than Ho (28). The pump has low energy consumption rate, especially at low flow corresponding to the conditions in which the pump is operated most of the time. Thus, the pump according to the invention is less energy consuming than the prior art centrifugal pumps.

公开(公告)号：EP2420678A1

公开(公告)日：2012-02-22

申请号：EP10008738.6

申请日：2010-08-21

Applicant: Grundfos Management A/S

Inventor： Rasmussen, Svend ,  Jepsen, Troels ,  Stenholt Laursen, Pia ,  Jensen, Finn

IPC: F04D15/00 ,  F04D29/22 ,  F04D29/24

CPC classification number: F04D13/06 ,  F04D15/0033 ,  F04D25/06 ,  F04D29/2261 ,  F04D29/245

Abstract: A centrifugal pump having at least one impeller (32), a pump housing and an electrical motor. The pump has a Q-H pump curve (4) having a head Ho (28) at zero flow and a head H ref (30) corresponding to the highest hydraulic power and that H ref (30) is greater than Ho (28). The pump has low energy consumption rate, especially at low flow corresponding to the conditions in which the pump is operated most of the time. Thus, the pump according to the invention is less energy consuming than the prior art centrifugal pumps.

Abstract translation: 一种具有至少一个叶轮（32），泵壳体和电动马达的离心泵。 泵具有在零流动下具有头部Ho（28）的Q-H泵曲线（4）和对应于最高液压功率的头部H ref（30），并且H ref（30）大于Ho（28）。 该泵具有低能量消耗率，特别是在与大部分时间内运行泵的条件相对应的低流量下。 因此，根据本发明的泵与现有技术的离心泵相比能量消耗较少。

公开(公告)号：EP2420678B1

公开(公告)日：2015-02-25

申请号：EP10008738.6

申请日：2010-08-21

Applicant: Grundfos Management A/S

Inventor： Rasmussen, Svend ,  Jepsen, Troels ,  Stenholt Laursen, Pia ,  Jensen, Finn

IPC: F04D15/00 ,  F04D29/22 ,  F04D29/24 ,  F04D25/06

CPC classification number: F04D13/06 ,  F04D15/0033 ,  F04D25/06 ,  F04D29/2261 ,  F04D29/245

Abstract: A centrifugal pump having at least one impeller (32), a pump housing and an electrical motor. The pump has a Q-H pump curve (4) having a head Ho (28) at zero flow and a head H ref (30) corresponding to the highest hydraulic power and that H ref (30) is greater than Ho (28). The pump has low energy consumption rate, especially at low flow corresponding to the conditions in which the pump is operated most of the time. Thus, the pump according to the invention is less energy consuming than the prior art centrifugal pumps.