The internal impeller of the high-pressure blower is the core component of the fan. The reason why the fan can generate flow and pressure is that the motor drives the rotation of the impeller, which makes the gas pressure change.
Although the fan impeller looks very simple and clear, others are produced through multiple processing techniques and precise balance tests during production. These processing processes are invisible to users, so they have such ideas.
The damage of the internal impeller of the high-pressure blower is nothing but impurities inside, which affects the rotation of the impeller. Because of the small internal clearance, the debris hinders the normal operation and directly collides with the impeller blades at high speed. The force is very large, because every second The speed is 45 rpm. Once the debris enters and collides, the impeller of the lighter one will be broken, and the heavy one will also affect the motor.
The reason mentioned above is that debris has entered the fan and sucked in through the inlet. Then you can start with the root of the disease, install a fan filter, and eliminate the transition from dangerous to the fan in the initial state.
There is another situation, which is relatively rare, that is, the bearing supporting the front panel is damaged. If the internal balls fall off, it will cause the height of the impeller to drop, and the fan impeller and the inner wall will rub against the hall. At this time, the impeller blades are damaged in a large area. Or all the leaves are knocked out, which is a serious one.
