Blower with waterproof function

A blower comprising:

• a volute casing having a first housing and a second housing, the first housing and the second housing cooperating to define a volute cavity;
• an impeller disposed within the volute cavity;
• a motor configured to drive rotation of the impeller and comprising an output shaft;
• a ventilation area formed on a sidewall of the second housing, the ventilation area comprising:
• a main air intake area disposed at a central position of the ventilation area and comprising a plurality of main air inlets;
• and
• an auxiliary air intake area disposed around a periphery of the main air intake area and comprising a plurality of auxiliary air inlets;
• a water-blocking rib disposed on a periphery of the ventilation area;
• at least one water-blocking grille disposed at each of the plurality of main air inlets and each of the plurality of auxiliary air inlets.

A blower comprising:

• a volute casing having a first housing and a second housing, the first housing and the second housing cooperating to define a volute cavity;
• an impeller disposed within the volute cavity;
• a motor configured to drive rotation of the impeller and comprising an output shaft;
• a ventilation area formed on a sidewall of the second housing;
• a first rear housing and a motor rear housing cooperating to define a mounting cavity in which the motor is enclosed;
• a drainage hole formed in a bottom portion of the mounting cavity, the drainage hole being in fluid communication with an external environment;
• a rear vent formed at an end of the motor rear housing positioned opposite to the impeller;
• and
• a water-blocking cover disposed over the rear vent.