公开(公告)号：US20250020122A1

公开(公告)日：2025-01-16

申请号：US18688104

申请日：2022-09-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Lasse Søgaard LEDET ,  Jan Balle LARSEN

IPC: F04B53/00 ,  F04B49/06

Abstract: The invention is a device (1) for controlling operational vibrations of a pump (2) or pump assembly arranged thereon. In some embodiments, it comprises a mounting plate (3) configured to have the pump or pump assembly arranged on a surface thereof. The device comprises at least one actuator (6) configured to switch between a first state in which it provides a connection between the pump or pump assembly and an associated carrying surface or between the mounting plate and the carrying surface, and a second state in which there is no such connection via the at least one actuator. Activation of the at least one actuator to switch between the first and the second states is controllable so that resonance characteristics of the pump or pump assembly during operation can be changed by the activation.

公开(公告)号：US20220390036A1

公开(公告)日：2022-12-08

申请号：US17834435

申请日：2022-06-07

Applicant: GRUNDFOS HOLDING A/S

Inventor： Lasse Søgaard LEDET

IPC: F16K47/02 ,  F16K27/00 ,  F16K31/04 ,  F04D29/66 ,  F04D25/06

Abstract: A fluid flow regulation assembly (1) includes: movable parts, for being actively mechanically driven, including at least one of a fluid flow regulating body for regulating a fluid flow and a rotor of a motor for driving the regulating body; and power electronics for controlling the motor. The movable parts and/or the power electronics are a source of vibration. Static parts are exposed to traveling vibrations originating from the source of vibration and include at least one of the group: a pump housing (3), a valve housing, a motor housing (5), a pump base and an electronics housing (7). The static parts include a structural element (11) with at least one vibration attenuation section (9) for attenuating vibrations: that originate from the source of vibration; travel along the structural element and have a vibration frequency above a pre-determined minimum vibration frequency (fmin).