Double-motor Double-blade Booster Fan

Abstract

The present invention discloses a double-motor double-blade booster fan, including: a fan outer frame, a rotating mechanism installed in a center position of the fan outer frame, and a wire (circuit connection) electrically connected with the rotating mechanism and having a USB interface, wherein the rotating mechanism includes a motor bracket; a first motor and a second motor arranged on both ends of the motor bracket respectively; a shifting yoke installed on the motor bracket; a first blade installed on an output shaft of the first motor; and a second blade installed on an output shaft of the second motor, wherein the first blade includes a first axle center and first leaf blades uniformly dispersed on an outer circumference of the first axle center, and the second blade includes a second axle center and second leaf blades uniformly dispersed on an outer circumference of the second axle center. The present invention not only has simple structure and stable performance, but also has larger wind volume and wind pressure than those of a traditional single-blade booster fan, is a design that integrates efficacy and energy saving and has great market application and popularization values.

1 . A double-motor double-blade booster fan, comprising: a fan outer frame ( 1 ), a rotating mechanism ( 2 ) installed in a center position of the fan outer frame ( 1 ), and a wire ( 3 ) (circuit connection) electrically connected with the rotating mechanism ( 2 ) and having a USB interface, wherein the rotating mechanism ( 2 ) comprises a motor bracket ( 21 ); a first motor ( 22 ) and a second motor ( 23 ) arranged on both ends of the motor bracket ( 21 ) respectively; a shifting yoke ( 211 ) installed on the motor bracket ( 21 ); a first blade ( 4 ) installed on an output shaft of the first motor ( 22 ); and a second blade ( 5 ) installed on an output shaft of the second motor ( 23 ), wherein the first blade ( 4 ) comprises a first axle center ( 41 ) and first leaf blades ( 42 ) uniformly dispersed on an outer circumference of the first axle center ( 41 ), and the second blade ( 5 ) comprises a second axle center ( 51 ) and second leaf blades ( 52 ) uniformly dispersed on an outer circumference of the second axle center ( 51 ). 
     
     
         2 . The double-motor double-blade booster fan according to  claim 1 , wherein screw holes ( 11 ) are formed uniformly at the outer circumference of the fan outer frame ( 1 ). 
     
     
         3 . The double-motor double-blade booster fan according to  claim 1 , wherein the motor bracket ( 21 ) is fixedly connected with the fan outer frame ( 1 ). 
     
     
         4 . The double-motor double-blade booster fan according to  claim 1 , wherein the first blade ( 4 ) and the second blade ( 5 ) rotate in opposite directions, and a distance of 50 to 150 mm is kept between the first blade ( 4 ) and the second blade ( 5 ). 
     
     
         5 . The double-motor double-blade booster fan according to  claim 1 , wherein a switch button ( 6 ) is installed on one side of the fan outer frame ( 1 ) and is electrically connected with the rotating mechanism ( 2 ).
 The double-motor double-blade booster fan according to  claim 1 , wherein the number of the first leaf blades ( 42 ) and the number of the second leaf blades ( 52 ) are designed according to fluid dynamics to effectively inhibit generation of noise.