公开(公告)号：US20210396240A1

公开(公告)日：2021-12-23

申请号：US17353002

申请日：2021-06-21

Applicant: GRUNDFOS HOLDING A/S

Inventor： Alessandro IACOPONI ,  Riccardo DAL CANTO

IPC: F04D27/00 ,  F04D29/42 ,  F04D29/22 ,  F04D1/00

Abstract: A centrifugal pump device has at least one impeller (16), a circulation connection between a delivery side (22) of the at least one impeller (16) and a suction side (20) of the at least one impeller (16), and a valve arrangement (30, 46) in said circulation connection (44, 54). The valve arrangement (30, 46) has a first valve mode providing a pressure dependent shut-off valve (46) in the circulation connection. The valve arrangement (30, 46) allows a change between the first valve mode and at least one further valve mode. The at least one further valve mode provides at least one fixed closing degree of the circulation connection (44, 54).

公开(公告)号：US20130074947A1

公开(公告)日：2013-03-28

申请号：US13623233

申请日：2012-09-20

Applicant: GRUNDFOS HOLDING A/S

Inventor： Riccardo DAL CANTO ,  Alessandro IACOPONI ,  Thomas MEYER ,  Ralf SCHOMÄCKER

IPC: F03B11/00

CPC classification number: F24H8/006 ,  C02F1/66 ,  C02F2103/18 ,  Y02B30/106 ,  Y10T137/5762

Abstract: A condensate lifting installation system is provided having a lifting unit (2), which includes a collection container (6) and a pump assembly (9), and a neutralization unit (4), which includes a receiver space (20) for a neutralizing agent. The lifting unit (2) is designed at its upper side for the releasable attachment of the neutralization unit (4).

Abstract translation: 提供了一种具有提升单元（2）的冷凝提升安装系统，该升降单元包括收集容器（6）和泵组件（9），以及中和单元（4），其包括用于中和的接收器空间（20） 代理商 提升单元（2）设计在其上侧，用于中和单元（4）的可释放的附接。