US 11,913,481 B2
Attenuation device for the fluid flow pulsation in a hydraulic circuit connected with a hydraulic machine
Mario Antonio Morselli, Modena (IT)
Assigned to STEM NUMERICAL ENGINEERING S.R.L., Modena (IT)
Appl. No. 17/255,587
Filed by STEM NUMERICAL ENGINEERING S.R.L., Modena (IT)
PCT Filed Jun. 27, 2019, PCT No. PCT/IB2019/055446
§ 371(c)(1), (2) Date Dec. 23, 2020,
PCT Pub. No. WO2020/003190, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 102018000006768 (IT), filed on Jun. 28, 2018.
Prior Publication US 2021/0164502 A1, Jun. 3, 2021
Int. Cl. F15B 21/00 (2006.01); F04B 11/00 (2006.01); F16L 55/027 (2006.01)
CPC F15B 21/008 (2013.01) [F04B 11/0091 (2013.01); F15B 2211/8616 (2013.01); F16L 55/02772 (2013.01)] 27 Claims
OG exemplary drawing
 
1. An attenuation device for a fluid flow pulsation along a duct of a hydraulic circuit connected with a hydraulic machine, comprising at least an attenuation module passed through by a pass-through duct configured to be placed in fluid communication with said duct of said hydraulic circuit, wherein in said attenuation module a first duct is obtained having an opened first end in fluid communication with said pass-through duct, and a closed second end, said first duct extending between said opened first end and said closed second end along a curved line comprising a plurality of curved sections, wherein at least two curved sections of said first duct are separated from one another by a shared separation wall configured to be compliant towards a pressure difference between a first section and a second section of said at least two curved sections separated by said shared separation wall, said first duct being adapted to attenuate the pulsation of said fluid flow along said duct of said hydraulic circuit to reduce the vibrations generated by said pulsation of said fluid flow.