Patent ID: 11920490
Assignee: BORGWARNER INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A charging device (10) for an internal combustion engine or a fuel cell, comprising:
a compressor (100) with a compressor housing (110) and a compressor wheel (120) arranged in the compressor housing (110),
a shaft (200) which is coupled to the compressor wheel (120),
a bearing housing (300) which is connected to the compressor housing and in which the shaft (200) is rotatably mounted, wherein the bearing housing (300) comprises a thrust bearing (400) for axial mounting of the shaft (200), wherein the thrust bearing has a bearing gap (410) which extends at least partially in a radial direction (24) relative to the shaft (200), and
at least one return channel (600a, 600b, 600c),
wherein the thrust bearing (400) is fluidically connected to a pressure side (130) of the compressor (100) and arranged such that when the compressor (100) is in operation, a fluid stream from the compressor (100) flows at least partially in the radial direction (24) through the bearing gap (410),
wherein the at least one return channel (600a, 600b, 600c) is designed to discharge the fluid stream, flowing in the radial direction (24) radially outwardly through the bearing gap (410) during operation of the compressor, out of the thrust bearing (400),
wherein the thrust bearing (400) comprises a thrust bearing plate (420) which is rotationally fixedly coupled to the shaft (200),
wherein the thrust bearing (400) comprises a thrust bearing chamber (430) in which the thrust bearing plate (420) is arranged and which has an inner circumferential face (431), and
wherein a sealing element (440) comprising a circumferential groove is provided between the inner circumferential face (431) and a circumferential running surface (423) of the thrust bearing plate (420).