Air foil bearing and structure for supplying air into it

摘要

The present invention improves the damping power and cooling air foil bearing, and the air was increased rotational stability and to provide a supply structure for the purpose, in order to achieve this object, and a hollow portion is formed to receive a rotation axis, the at least one air inlet is formed so that the length of the hollow portion can be supplied with compressed air towards the middle of the direction, in the longitudinal direction on the inner surface at least one slot is formed in the sleeve and the slot is coupled to one end provides an air foil bearing including at least one airfoil disposed in the circumferential direction and on the inner surface of the sleeve. Further, the hollow portion is formed for receiving the rotary shaft, the length of the at least one air inlet to supply compressed air to the hollow portion is formed in the middle portion in the direction along the longitudinal direction on the inner surface at least one slot is formed in the sleeve, wherein at least one end of the airfoil portion is provided in the slot, the sleeve is coupled, the housing has an air passage connected to the air inlet is formed, and the air flow path and the air supply unit for supplying air into said sleeves through said air inlet provides an air supply structure of the air foil bearing comprising: