Blower with waterproof function

Abstract

A blower with a waterproof function includes a volute casing having a first housing, a second housing, and a volute cavity defined within the volute casing between the first housing and the second housing, an impeller disposed within the volute cavity, and a motor driving the rotation of the impeller, the motor including an output shaft. A sidewall of the second housing of the volute casing further includes a ventilation area disposed adjacent to the motor, the output shaft of the motor passes through the ventilation area and is connected to the impeller, and a water-blocking rib is disposed on a periphery of the ventilation area.

1 . A blower with a waterproof function comprising:
 a volute casing comprising:
 a first housing; 
 a second housing; and 
 a volute cavity defined within the volute casing between the first housing and the second housing; 
   an impeller disposed within the volute cavity; and   a motor driving a rotation of the impeller and comprising an output shaft;   wherein a sidewall of the second housing of the volute casing further includes a ventilation area disposed adjacent to the motor, the output shaft of the motor passes through the ventilation area and is connected to the impeller, and a water-blocking rib is disposed on a periphery of the ventilation area.   
     
     
         2 . The blower of  claim 1 , wherein the motor is disposed within a mounting cavity defined between a first rear housing of the sidewall of the second housing and a motor rear housing, and a drainage hole in communication with an external environment is formed within a bottom portion of the mounting cavity. 
     
     
         3 . The blower of  claim 2 , wherein a rear vent is disposed at an end of the motor rear housing positioned opposite to the first housing, and a water-blocking cover is disposed at the rear vent. 
     
     
         4 . The blower of  claim 3 , wherein a first water-blocking grille is disposed at the rear vent. 
     
     
         5 . The blower of  claim 1 , wherein the ventilation area includes a main air intake area disposed at a central location of the ventilation area, an auxiliary air intake area is defined on a periphery of the main air intake area, a plurality of main air inlets are disposed in the main air intake area in a circumferential direction, and a second water-blocking grille is disposed at each of the plurality of main air inlets. 
     
     
         6 . The blower of  claim 5 , wherein the first water-blocking grille and the second water-blocking grille each include an L-shaped pillar and an inverted L-shaped pillar, the L-shaped pillar being staggered relative to the inverted L-shaped pillar. 
     
     
         7 . The blower of  claim 5 , wherein the main air intake area includes a boss protruding into the volute cavity, the boss forms a recess on the sidewall of the second housing, and an end portion of the motor adjacent to the output shaft abuts against the recess. 
     
     
         8 . The blower of  claim 7 , wherein the motor further comprises a motor front cover including a plurality of front cover side holes formed through the motor front cover and positioned about the motor front cover in a circumferential direction, and an end portion of the motor front cover is provided with a plurality of front cover end holes corresponding to the plurality of main air inlets. 
     
     
         9 . The blower of  claim 8 , further comprising a second rear housing disposed in an outer circumferential direction of the recess, a second rear housing diameter of the second rear housing being greater than a recess diameter of the recess. 
     
     
         10 . The blower of  claim 8 , wherein a plurality of auxiliary air inlets are disposed in the auxiliary air intake area, the second rear housing and the first rear housing form an auxiliary ventilation passage, the plurality of auxiliary air inlets are in communication with the auxiliary ventilation passage, and a third water-blocking grille is disposed at each of the plurality of auxiliary air inlets. 
     
     
         11 . The blower of  claim 9 , wherein a sidewall of the second rear housing includes a plurality of rear housing ridges positioned along an axial direction of the second rear housing, the end portion of the motor front cover abuts the recess, and an outer sidewall of the motor front cover abuts the plurality of rear housing ridges. 
     
     
         12 . 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.   
     
     
         13 . The blower of  claim 12 , further comprising:
 a motor rear housing; and   a first rear housing;   wherein the motor rear housing and the first rear housing define a mounting cavity that encloses the motor.   
     
     
         14 . The blower of  claim 13 , wherein a drainage hole in communication with an external environment is formed within a bottom portion of the mounting cavity. 
     
     
         15 . The blower of  claim 13 , wherein a rear vent is disposed at an end of the motor rear housing, and a water-blocking cover is disposed at the rear vent. 
     
     
         16 . The blower of  claim 12 , wherein each of at least one water-blocking grille includes an L-shaped pillar and an inverted L-shaped pillar, the L-shaped pillar being staggered relative to the inverted L-shaped pillar. 
     
     
         17 . The blower of  claim 12 , wherein the motor further comprises a motor front cover including a plurality of front cover side holes formed through the motor front cover and positioned about the motor front cover in a circumferential direction, and an end portion of the motor front cover is provided with a plurality of front cover end holes corresponding to the plurality of main air inlets. 
     
     
         18 . 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.   
     
     
         19 . The blower of  claim 18 , wherein the water-blocking cover includes an upper surface that is obliquely angled. 
     
     
         20 . The blower of  claim 18 , wherein the water-blocking cover includes an L-shaped pillar and an inverted L-shaped pillar, the L-shaped pillar being staggered relative to the inverted L-shaped pillar.