| 主权项 |
1. A centrifugal blower apparatus, comprising:
a housing having first and second scroll-shaped sides separated by a main body portion defining an air outlet, said first side having a first air inlet, and said second side having a second air inlet wherein said first and second air inlets open to a blower chamber that is in fluid communication with said air outlet, said main body portion further defining a mid-portion axially substantially mid-way between said first and second sides; an operating system having:
(a) a frame arranged in said blower chamber between said first and second sides, said frame having a central portion including a bearing housing;(b) a first impeller for motivating air out from said blower chamber through said air outlet, said first impeller having a first outer diameter and said impeller having a hub and a central shaft extending from said hub, said central shaft being rotatable about bearings contained in said bearing housing of said frame; and(c) a motor for rotating said first impeller in a first circumaxial direction about a blower axis, said motor having a rotor with a second outer diameter that is substantially equal to said first outer diameter, said rotor being coupled to said first impeller circumaxially about said hub to rotate about said blower axis, and an annular stator arranged radially concentrically outwardly about said rotor, said annular stator having an inner diameter that is substantially equal to said first outer diameter, wherein said stator is secured to said frame within said blower chamber and said rotor is secured to said frame within said blower housing by way of said hub, central shaft and bearings; and wherein said operating system is coupled with said housing only at a coupling location downstream from said first impeller. |
