US 11,713,709 B2
Nozzle device and exhaust turbocharger
Keigo Sakamoto, Tokyo (JP); Eigo Katou, Tokyo (JP); Tsuyoshi Sakurai, Tokyo (JP); Shigeyoshi Sakuma, Tokyo (JP); Yosuke Dammoto, Sagamihara (JP); and Yoji Akiyama, Sagamihara (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
Appl. No. 17/442,025
Filed by MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
PCT Filed Mar. 28, 2019, PCT No. PCT/JP2019/013554
§ 371(c)(1), (2) Date Sep. 22, 2021,
PCT Pub. No. WO2020/194651, PCT Pub. Date Oct. 1, 2020.
Prior Publication US 2022/0170414 A1, Jun. 2, 2022
Int. Cl. F02B 37/24 (2006.01); F16B 17/00 (2006.01)
CPC F02B 37/24 (2013.01) [F16B 17/006 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A nozzle device, comprising:
an annular nozzle plate;
an annular nozzle mount defining a nozzle flow passage between the nozzle mount and one surface of the nozzle plate;
at least one nozzle support coupling the nozzle plate and the nozzle mount, and fixed to at least the nozzle plate by caulking; and
at least one nozzle vane supported between the nozzle plate and the nozzle mount,
wherein the nozzle plate has a through hole into which an end portion of the at least one nozzle support is inserted, and
wherein the through hole includes:
a straight portion extending from the one surface toward another surface of the nozzle plate;
an enlarged diameter portion formed on a side of the another surface of the nozzle plate and having a larger diameter than the straight portion; and
a relief processing portion which is formed in a part of the straight portion continuing into the enlarged diameter portion and has a larger diameter than another part of the straight portion where the relief processing portion is not formed, the relief processing portion having a constant diameter and extending along an extending direction of the through hole.