| 摘要 |
The invention relates to an impeller (1) for a fan, in particular an axial or radial fan having a hub (2) for connecting the impeller (1) to a drive motor and having fan blades (6) which are arranged circumferentially around the hub (2) and having pockets (9) in the hub region, having balance weights (15) which can be fastened therein, aligned in the axial direction. The balance weights (15) are made of U-shaped, bent weight clips made of spring-elastic material, having at least two opposite clip legs extending parallel to each other which are connected to each other via a bend section, and comprise a clamping gap between the clip legs. One of the clip legs extends within the pockets (9) and the other clip leg extends outside of the pockets (9), such that there is a clamping seat on a pocket wall (12) extending in the clamping gap. |
| 主权项 |
1. An impeller (1) for a fan, especially for an axial or radial fan, having a hub (2, 31, 41) to connect the impeller (1) to a drive motor and having fan blades (6, 32) that are arranged around the hub (2, 41) along the circumference and, in the hub area, having pockets (9, 24, 33, 36) that are oriented in the axial direction, that are open on one side in the axial direction, and that have balancing weights (15) that can be fastened therein,
characterized in that the balancing weights (15) are in the form of U-shaped bent balancing clips (15a, 15b, 15c, 15d) made of resilient material, each having at least two opposing parallel clip legs (17, 18) that are connected to each other via an arced section (19) and that enclose a clamping gap (21) between the clip legs (17, 18), whereby one of the clip legs (17) runs inside the pockets (9, 24, 33, 36) while the other clip leg (18) runs outside of the pockets (9, 24, 33, 36), so that a clamping fit is achieved on a pocket wall (12, 27, 38) that runs in the clamping gap (21), whereby in a configuration as a radial fan, the blades (6) run between a top disc (4) and a bottom disc (3), and the hub (2) is configured on the bottom disc (3), whereby on the one hand, the pockets (9) are configured in a rim (8) that surrounds an inflow opening (7) of the top disc (4) and, on the other hand, said pockets (9) are configured in a ring collar (23) that faces away axially from the top disc (4) and that is shaped onto the bottom disc (3), whereby the rim (8) and the ring collar (23) have a circular cross section, and the diameter of the ring collar (23) is especially larger than, or the same as, the diameter of the rim (8). |
