US 12,442,390 B2
Compressor
Yue Shen, Suzhou (CN); Tianbao Li, Suzhou (CN); and Yan Tian, Suzhou (CN)
Assigned to Wuxi Cummins Turbo Technologies Company Ltd., Jiangsu (CN)
Appl. No. 18/848,485
Filed by Wuxi Cummins Turbo Technologies Company Ltd., Suzhou (CN)
PCT Filed Mar. 18, 2022, PCT No. PCT/CN2022/081605
§ 371(c)(1), (2) Date Sep. 18, 2024,
PCT Pub. No. WO2023/173389, PCT Pub. Date Sep. 21, 2023.
Prior Publication US 2025/0215899 A1, Jul. 3, 2025
Int. Cl. F04D 29/66 (2006.01); F04D 17/10 (2006.01); F04D 29/42 (2006.01)
CPC F04D 29/661 (2013.01) [F04D 17/10 (2013.01); F04D 29/42 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A compressor housing for a compressor, the compressor housing comprising:
an inlet comprising:
an inlet passage configured to receive intake gas, the inlet passage being defined at least in part by a baffle; and
a recirculation passage defined between the baffle and an outer wall;
an impeller chamber in fluid communication with the inlet passage and configured to contain an impeller supported for rotation about a compressor axis;
a first fluid communication passage extending between the impeller chamber and the recirculation passage to permit fluid communication therebetween;
a second fluid communication passage extending between the inlet passage and the recirculation passage to permit fluid communication therebetween;
an outlet in fluid communication with the impeller chamber, the outlet comprising a volute portion and an exit portion, the volute portion and the exit portion defining a bifurcation therebetween; and
a plurality of struts including a strut being wider than the other struts in the plurality of struts, the wider strut extending across one of the first fluid communication passage or the second fluid communication passage so as to support the baffle, the strut extending circumferentially around at least a portion of the baffle;
wherein a centre of the bifurcation defines a first angular position (A) relative to the compressor axis, and the strut is configured to block at least a portion of the recirculation passage that is in the angular range of about −15° to about +45° relative to the first angular position (A); and wherein the baffle defines an outer surface on a radially outer side relative to the compressor axis and an inner surface on a radially inner side relative to the compressor axis; and
wherein the strut defines an arcuate width (W) measured along an interface between the outer surface of the baffle and the strut, the inner surface defines an inlet passage diameter (D), and the ratio of the arcuate width of the strut to the inlet passage diameter (W:D) is between around 0.15:1 to around 0.35:1.