US 12,234,838 B2
Turbo compressor comprising bearing cooling channel
Kyeong Su Kim, Daejeon (KR)
Appl. No. 18/277,419
Filed by TNE KOREA CO., LTD., Cheongju-si (KR)
PCT Filed Jan. 20, 2022, PCT No. PCT/KR2022/001019
§ 371(c)(1), (2) Date Aug. 16, 2023,
PCT Pub. No. WO2022/181997, PCT Pub. Date Sep. 1, 2022.
Claims priority of application No. 10-2021-0025039 (KR), filed on Feb. 24, 2021.
Prior Publication US 2024/0301895 A1, Sep. 12, 2024
Int. Cl. F04D 29/58 (2006.01); F04D 17/10 (2006.01); F04D 29/051 (2006.01); F04D 29/42 (2006.01)
CPC F04D 29/584 (2013.01) [F04D 17/10 (2013.01); F04D 29/0513 (2013.01); F04D 29/4206 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A turbo compressor capable of compressing a gas and supplying the compressed gas to outside, the turbo compressor comprising:
a compressed gas inlet through which the gas is sucked in;
an impeller for compressing the gas introduced through the compressed gas inlet;
a compressed gas outlet through which the gas compressed by the impeller is discharged to the outside;
a compression unit comprising a compressed gas channel connected from the compressed gas inlet to the compressed gas outlet;
a motor comprising a rotating shaft having an end coupled to the impeller, to rotate the impeller;
a housing comprising a motor accommodation space for accommodating the motor;
a cooling air channel provided to pass through the motor accommodation space and formed to circulate a cooling gas accommodated therein;
a cooling water channel formed to circulate a cooling liquid capable of cooling the housing; and
thrust bearings disposed at an end of the rotating shaft,
wherein the cooling water channel comprises bearing cooling water channels disposed within a predetermined distance from the thrust bearings to cool the thrust bearings,
wherein the rotating shaft comprises a thrust bearing runner corresponding to the thrust bearings,
wherein the bearing cooling water channels are provided within a predetermined distance from the thrust bearing runner,
wherein the bearing cooling water channels extend by a predetermined length along radial directions of the rotating shaft to allow the cooling liquid to flow along the radial directions of the rotating shaft such that the bearing cooling water channels cover a total area of front air channels of the cooling air channel and the thrust bearings, the front air channels being provided between the bearing cooling water channels and the thrust bearings and configured to allow the cooling gas to flow from an edge of an front end of the housing toward a center of the front end of the housing,
wherein the bearing cooling water channels have a fan shape with an upper width located farther from the rotating shaft greater than a lower width located closer from the rotating shaft and are arranged along a circumferential direction of the rotating shaft.