| 摘要 |
A diagonal or axial fan (100) comprises an air intake side (108) and an air discharge side (109) as well as an external rotor motor (150) that is mounted at least in part on a support tube (172) and drives an impeller (14) which is designed to allow, during operation of the fan, a cooling air flow (104) to be generated at least for cooling the external rotor motor (150), said cooling air flow being caused at least in part by negative pressure and flowing from the air discharge side (109) towards the air intake side (108). |
