US 12,467,381 B2
Variable geometry turbine
Robert L. Holroyd, Huddersfield (GB)
Assigned to Cummins Ltd, London (GB)
Appl. No. 18/293,723
Filed by Cummins Ltd, London (GB)
PCT Filed Jul. 28, 2022, PCT No. PCT/GB2022/051993
§ 371(c)(1), (2) Date Jan. 30, 2024,
PCT Pub. No. WO2023/007172, PCT Pub. Date Feb. 2, 2023.
Claims priority of application No. 2111046 (GB), filed on Jul. 30, 2021.
Prior Publication US 2024/0344465 A1, Oct. 17, 2024
Int. Cl. F01D 17/14 (2006.01); F01D 17/16 (2006.01); F01D 25/24 (2006.01); F02B 37/24 (2006.01)
CPC F01D 17/16 (2013.01) [F01D 17/14 (2013.01); F01D 25/243 (2013.01); F01D 17/143 (2013.01); F01D 17/167 (2013.01); F02B 37/24 (2013.01); F05D 2220/40 (2013.01); F05D 2230/60 (2013.01); F05D 2240/128 (2013.01); F05D 2270/02 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A nozzle ring for a variable geometry turbine, the nozzle ring comprising:
an annular wall;
an inner flange that is perpendicular to the annular wall, and which extends from a radially inner edge of the annular wall;
an outer flange that is perpendicular to the annular wall, and which extends from a radially outer edge of the annular wall; and
two protrusions extending from one of the inner or outer flange towards the other one of the inner or outer flange, at least one of the two protrusions extending only partially towards the other one of the inner or outer flange, wherein both of the two protrusions extend either from the inner flange or from the outer flange;
wherein the two protrusions define a first gap therebetween; and
wherein the annular wall and the two protrusions define a second gap between the annular wall and both of the two protrusions.