| 摘要 |
The present invention relates to an air valve device which is applied with air bearings. More specifically, the air bearings are applied to the air valve device, and the surfaces of an outer ring and an inner ring are formed to be flat and not to be bent to minimize a friction force due to the movement of the outer ring. The air valve device which is applied with air bearings can also operate a wide range of a frequency band of the sound generated through an air valve. |
