Blower

A blower, comprising:

• a) a blower volute;
• b) a blower motor;
• and
• c) a fan wheel;
• wherein:
• the blower motor is disposed at a top of the blower volute;
• the fan wheel is disposed inside the blower volute and connected to the blower motor;
• the blower volute comprises an air inlet, an air outlet, a cover body, and a bottom cover;
• a plurality of installation parts are disposed at an outer side of the cover body;
• the bottom cover is embedded within the cover body;
• and the bottom cover and the cover body are welded together;
• the bottom cover is directly embedded into an inner wall of a bottom of the cover body;
• the inner wall is arranged with steps and a top of the bottom cover supports the steps;
• both the bottom cover and the inner wall have a circular shape and a bottom of the bottom cover is aligned with that of the cover body;
• the air outlet is disposed at one side of the cover body;
• the bottom cover comprises a circular base plate embedded into the inner wall of the bottom of the cover body and a convex ring body located in a middle of the circular base plate;
• the air inlet is disposed in the middle of the circular base plate and the convex ring body is located at an outer side of the air inlet;
• a bottom surface of the circular base plate and outer edges of the air inlet are provided with a plurality of reinforcing ribs;
• the fan wheel comprises an upper disks, a lower disk, and a plurality of fan blades disposed between the upper disk and the lower disk;
• a through hole is arranged in a middle of the lower disk and the convex ring body extends into the through hole;
• a shaft sleeve is arranged in a middle of the upper disk;
• the shaft sleeve is tightly connected to a shaft extension end of a rotating shaft of the blower motor;
• the shaft sleeve is embedded into a central through hole disposed at the top of the cover body;
• a top inner wall of the cover body is arranged with a convex portion located at an outer side of the shaft sleeve and disposed above an end surface of the upper disk;
• the outer edge of the upper disk is arranged with a plurality of fan blades;
• and
• the upper disk and the lower disk are welded together;
• and a number of the fan blades is 8-12.

A blower, the blower comprising:

• a) a blower volute;
• b) a blower motor;
• and
• c) a fan wheel;
• wherein
• the blower motor is disposed at a top of the blower volute;
• the fan wheel is disposed inside the blower volute and connected to the blower motor;
• the blower volute comprises an air inlet, an air outlet, a cover body, and a bottom cover;
• a plurality of installation parts are disposed at an outer side of the cover body;
• the bottom cover is embedded within the cover body;
• and the bottom cover and the cover body are welded together;
• the cover body is arranged with at least one drainage hole, the drainage hole having two top sides;
• a rib is arranged both on an inner wall of the bottom of the cover body and at the two top sides of the drainage hole;
• and the rib introduces a condensed water generated in the blower volute out through the drainage hole;
• and
• the drainage hole comprises a gully hole, a drain outlet, and a diversion section located between the gully hole and the drain outlet;
• the gully hole, the drain outlet, and the diversion section have the same cross-sectional shape and size;
• and the rib is arranged at one side of the gully hole and perpendicularly connected to a side edge of the gully hole.