US 12,435,815 B2
Fluid flow regulation assembly with vibration attenuation
Lasse Søgaard Ledet, Aalborg (DK)
Assigned to GRUNDFOS HOLDING A/S, Bjerringbro (DK)
Filed by GRUNDFOS HOLDING A/S, Bjerringbro (DK)
Filed on Jun. 7, 2022, as Appl. No. 17/834,435.
Claims priority of application No. 21178346 (EP), filed on Jun. 8, 2021.
Prior Publication US 2022/0390036 A1, Dec. 8, 2022
Int. Cl. F16K 47/02 (2006.01); F04B 53/00 (2006.01); F04D 25/06 (2006.01); F04D 29/66 (2006.01); F16K 27/00 (2006.01); F16K 31/04 (2006.01)
CPC F16K 47/02 (2013.01) [F04B 53/003 (2013.01); F04D 25/06 (2013.01); F04D 29/66 (2013.01); F04D 29/668 (2013.01); F16K 27/00 (2013.01); F16K 31/04 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A fluid flow regulation assembly comprising:
movable parts for being actively mechanically driven, wherein the movable parts include at least one fluid flow regulating body for regulating a fluid flow and a rotor of a motor for driving the regulating body;
power electronics for controlling the motor, wherein at least one of the movable parts and the power electronics are a source of vibration; and
static parts exposed to traveling vibrations originating from the source of vibration, wherein:
the static parts include at least one of the group comprising: a pump housing, a valve housing, a motor housing, a pump base and an electronics housing;
the static parts comprise a structural element with at least one vibration attenuation section for attenuating vibrations that originate from the source of vibration, travel along said structural element, and have a vibration frequency above a pre-determined minimum vibration frequency;
the at least one vibration attenuation section has a material thickness decay profile in a traveling direction of the vibrations;
the structural element comprises at least one wall section;
the at least one vibration attenuation section is arranged at the at least one wall section; and
the at least one vibration attenuation section extends over an area of rotationally asymmetric shape.