Ceiling fan having double-layer blades

Abstract

A ceiling fan having double-layer blades includes a motor unit, a blade frame unit, a first blade unit, and a second blade unit. The blade frame unit has a blade frame body. The first blade unit includes a plurality of first blades. The second blade unit includes a plurality of second blades. The first blades and the second blades surround the outside of the blade frame body, so that there is no need for the motor unit to provide a motor housing for connecting the first blades and the second blades, thereby saving costs and installation costs. With the arrangement of the first blades and the second blades, the ceiling fan can increase the current of air for cooling.

1 - 9 . (canceled) 
     
     
         10 . A ceiling fan blade assembly, comprising:
 a blade frame body configured to be connected to a rotating component of a ceiling fan motor, the blade frame body including an upper mounting portion and a lower mounting portion;   upper blades each including a first fixing portion, mounted to the upper mounting portion, and a first blade portion; and   lower blades each including a second fixing portion, mounted to the lower mounting portion, and a second blade portion.   
     
     
         11 . The ceiling fan blade assembly according to  claim 10 , further comprising:
 the upper blades each including a first extension wall, the first extension walls comprising a first casing;   the lower blades each including a second extension wall, the second extension walls comprising a second casing beneath the first casing; and   the first casing and the second casing surrounding the blade frame body.   
     
     
         12 . The ceiling fan blade assembly according to  claim 11 , further comprising:
 the upper blades each comprising a first arc portion, the first arc portions configured with the first fixing portions, respectively; and   the lower blades each comprising a second arc portion, the second arc portions configured with the second fixing portions, respectively.   
     
     
         13 . The ceiling fan blade assembly according to  claim 12 , further comprising:
 the blade frame body further comprising a first flange, configured with the upper mounting portion, and a second flange, configured with the lower mounting portion;   the first arc portions arranged on the first flange; and   the second arc portions arranged on the second flange.   
     
     
         14 . The ceiling fan blade assembly according to  claim 13 , the blade frame body further comprising an annular wall extending between the first flange and the second flange. 
     
     
         15 . The ceiling fan blade assembly according to  claim 14 , further comprising the first flange and the second flange each extending outward from the annular wall. 
     
     
         16 . The ceiling fan blade assembly according to  claim 14 , the blade frame body including a motor mounting portion extending inward from the annular wall and configured to be connected to the rotating component. 
     
     
         17 . A ceiling fan, comprising:
 a motor including a rotating component;   a blade frame body connected to the rotating component, the blade frame body including an upper mounting portion and a lower mounting portion;   upper blades each including a first fixing portion, mounted to the upper mounting portion, and a first blade portion; and   lower blades each including a second fixing portion, mounted to the lower mounting portion, and a second blade portion.   
     
     
         18 . The ceiling fan according to  claim 17 , further comprising:
 the upper blades each including a first extension wall, the first extension walls comprising a first casing;   the lower blades each including a second extension wall, the second extension walls comprising a second casing beneath the first casing; and   the first casing and the second casing surrounding the blade frame body.   
     
     
         19 . The ceiling fan according to  claim 18 , further comprising:
 the upper blades each comprising a first arc portion, the first arc portions configured with the first fixing portions, respectively; and   the lower blades each comprising a second arc portion, the second arc portions configured with the second fixing portions, respectively.   
     
     
         20 . The ceiling fan according to  claim 19 , further comprising:
 the blade frame body further comprising a first flange, configured with the upper mounting portion, and a second flange, configured with the lower mounting portion;   the first arc portions arranged on the first flange; and   the second arc portions arranged on the second flange.   
     
     
         21 . The ceiling fan according to  claim 20 , the blade frame body arranged on an outer peripheral side of the motor. 
     
     
         22 . The ceiling fan according to  claim 21 , the blade frame body further comprising an annular wall extending between the first flange and the second flange. 
     
     
         23 . The ceiling fan according to  claim 22 , further comprising the first flange and the second flange each extending outward from the annular wall. 
     
     
         24 . The ceiling fan according to  claim 22 , the blade frame body including a motor mounting portion extending inward from the annular wall and connected to the rotating component.