| 摘要 |
PURPOSE: A bubble generating device is provided to deliver small bubble from a bubble inserting part to a pipe-typed cutting part without the friction between the bubble inserting part to the pipe-typed cutting part by using several balls or rollers. CONSTITUTION: A bubble generating device comprises a pipe-typed inserting part (2) with several air inserting holes (12) on the outside of a shelf part in water and an air supplying pipe (5) which is connected to the air inserting part and a pipe-typed cutting part (3) with several passing holes (13) on the outside of the shelf part. The front part of the air inserting part is connected to the shelf part. The air inserting part or the pipe-typed cutting part is a rotator and one of them is a fixture. There are several balls (7a) or several rollers between the front part of the pipe=-typed cutting part and the air inserting part. The several passing holes and the air inserting holes are arranged in a way that the two holes do not face each other. |
