Patent ID: 11965520
Assignee: NEUROS CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 19:
20. A mechanical device comprising:
a motor housing;
a motor inside the motor housing and including a rotation shaft;
an impeller connected to the rotation shaft;
an airfoil journal bearing rotatably supporting the rotation shaft; and
a bearing seating part connected to the motor housing and including a seating space in which the airfoil journal bearing is seated, wherein the airfoil journal bearing comprises:
a bearing housing having an inner surface forming a hollow through the bearing housing into which the rotation shaft is inserted,
an airfoil in the hollow, extending in a circumferential direction of the rotation shaft, and enclosing at least 180 to 360 degrees of a circumference of the rotation shaft, and receiving pressure generated by rotation of the rotation shaft, and
a ring member connected to the bearing housing and enclosing an outer surface of the bearing housing in a circumferential direction of the bearing housing, wherein
the bearing housing, based on a cross-section perpendicular to an axial direction of the rotation shaft, comprises an insert slit formed in a radial direction of the bearing housing through the bearing housing from the inner surface of the bearing housing forming the hollow to the outer surface of the bearing housing,
the airfoil comprises an insert part bent from an edge of the airfoil in the circumferential direction of the rotation shaft and extending through the insert slit to the outer surface of the bearing housing, and
an outer surface of the ring member is engaged with the insert part and configured to fix a position of the airfoil in an axial direction of the airfoil.