US 11,885,335 B2
Oil supply mechanism of rotating machinery and rotating machinery having oil supply mechanism
Xiaowei Hu, Suzhou (CN); and Lingfeng Ni, Suzhou (CN)
Assigned to Copeland Climate Technologies (Suzhou) Co. Ltd., Jiangsu (CN)
Appl. No. 17/288,423
Filed by EMERSON CLIMATE TECHNOLOGIES (SUZHOU) CO., LTD., Jiangsu (CN)
PCT Filed Oct. 23, 2019, PCT No. PCT/CN2019/112754
§ 371(c)(1), (2) Date Aug. 11, 2021,
PCT Pub. No. WO2020/083309, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 201811245293.4 (CN), filed on Oct. 24, 2018; and application No. 201821730366.4 (CN), filed on Oct. 24, 2018.
Prior Publication US 2021/0388836 A1, Dec. 16, 2021
Int. Cl. F04C 29/02 (2006.01); F04C 18/02 (2006.01); F04C 23/00 (2006.01); F04C 29/00 (2006.01)
CPC F04C 29/025 (2013.01) [F04C 18/0207 (2013.01); F04C 29/005 (2013.01); F04C 29/028 (2013.01); F04C 2240/603 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An oil supply mechanism of a rotating machinery comprising a rotating shaft, the oil supply mechanism comprising:
a main oil supply passage formed in the rotating shaft substantially in an axial direction of the rotating shaft; and
a bypass oil passage in communication with the main oil supply passage and allowing a part of lubricating oil in the main oil passage to flow out via the bypass oil passage,
wherein the bypass oil passage extends substantially transversely to the rotating shaft, and the bypass oil passage is configured such that a radial distance between an outlet of the bypass oil passage and an axis of the rotating shaft is greater than a radius of the rotating shaft,
wherein the bypass oil passage comprises a first passage portion and a second passage portion connected to each other, the first passage portion is in direct fluid communication with the main oil supply passage, and a cross-sectional area of the first passage portion is greater than a cross-sectional area of the second passage portion so that the bypass oil passage is formed as a stepped passage.