US 11,988,230 B2
Turbo machine with vibration reduction device for stator vanes
Ken Ito, Saitama (JP); Yuta Ito, Saitama (JP); Daiki Hama, Saitama (JP); Shu Taguchi, Saitama (JP); and Tatsuro Akasaka, Saitama (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Nov. 23, 2022, as Appl. No. 18/058,367.
Claims priority of application No. 2021-212090 (JP), filed on Dec. 27, 2021.
Prior Publication US 2023/0204049 A1, Jun. 29, 2023
Int. Cl. F04D 29/66 (2006.01); F04D 29/54 (2006.01)
CPC F04D 29/668 (2013.01) [F04D 29/541 (2013.01); F05D 2220/32 (2013.01); F05D 2240/12 (2013.01); F05D 2260/38 (2013.01); F05D 2260/96 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A turbo machine comprising rotor blades, stator vanes positioned behind the rotor blades, a vibration reduction device for the stator vanes, the vibration reduction device comprising:
an annular base member having a cylindrical shape concentric around a central axis of a casing of the turbo machine and supporting base ends of the stator vanes which extend radially inward from an inner circumferential surface of the base member;
an elastomeric damping member surrounding and in slidable contact with an outer circumferential surface of the base member; and
a preloader surrounding an outer circumferential surface of the elastomeric damping member and configured to apply a preload directed radially inward to the elastomeric damping member,
wherein the preloader includes a cylindrical member circumferentially surrounding the elastomeric damping member, and
the preloader further includes a band member surrounding the cylindrical member, and a fastener configured to pull two ends of the band member toward each other and apply tension to the band member.