| 摘要 |
PURPOSE: An elbow and an exhaust pipe using the same are provided to successively and periodically clean the inner surface of the exhaust pipe included in the elbow with a brush rotated by a motor, thereby preventing the degradation of the exhaust performance or the blockage of the exhaust pipe even in a long-term usage. CONSTITUTION: An elbow (1) includes an elbow pipe (11), a bearing bracket, a rotary shaft with a rectangular shaft (S1) on an end portion of the elbow pipe, a rotary shaft with a rectangular groove (S2) on the other end portion of the elbow pipe, a middle rotary shaft, and brush units (7). Both sides of the middle rotary shaft are connected between the rotary shafts with universal joints to be inclined. The brush units are equipped on the peripheries of the rotary shafts and the middle shaft respectively and separate foreign materials adsorbed on the inner surface of the elbow pipe. |
