| 摘要 |
The duct comprises two relatively rotating elements (11,12) with two coaxial ring channels (23,24,23',24',23'',24'') between them, and different ring diameters. Each one has a fluid channel (25,26,27,28) with an inlet or outlet for gases or fluids. At least two of the ring channels have different diameters and are concentric. Both of the parts moving relative to each other about and axis (D) have a ring wall (19). |
