Air foil bearing, damping system and damping method for external impact using it

摘要

The present invention aims to provide an air foil bearing and its air supply system which have improved rotational stability by improving cooling performance and damping ability. To achieve this object, the present invention provides a hollow portion for accommodating a rotating shaft. At least one air inlet is formed to supply compressed air to the middle portion of the hollow portion in the longitudinal direction, and a sleeve in which at least one slot is formed along the longitudinal direction of the inner surface, and one end of which is fixed to the slot and on the inner surface of the sleeve. At least one air foil disposed along the circumferential direction, and at least one damping disposed between and in contact with the air foil while being pushed by compressed air interposed between the air foil and the air inlet and entering the air inlet. Providing an air foil bearing comprising a foil, and furthermore, such an air foil It provides shock attenuation system and shock attenuation method bearings are used.