| 摘要 |
<p>An advection-type fan includes a fan frame (1), a driving module (2) and an impeller (3, 4, 5). The fan frame (1) has a first cover portion (11), a second cover portion (12) and a lateral wall portion (13) arranged between the first and second cover portions (11 and 12), wherein the lateral wall portion (13) has an air inlet (131) and an air outlet (132). The driving module (2) is received in the fan frame (1) and coupled with the first cover portion (11). The impeller (3, 4, 5) has a hub (31, 41, 51) and a plurality of vanes (32, 42, 52). The hub (31, 41, 51) is rotatably coupled with the driving module (2) and the vanes (32, 42, 52) are coupled with the hub (31, 41, 51). The hub (31, 41, 51) has an air-guiding plane (412) facing the second cover portion (12). Each of the vanes (32, 42, 52) has a top edge (321, 421, 521) facing the second cover portion (12). The top edge (321, 421, 521) of each of the vanes (32, 42, 52) is higher than the air-guiding plane (412) of the hub (31, 41, 51) in an axial direction of the hub (31, 41, 51).</p> |
