Fan frame

Abstract

A fan frame includes a frame body, a base, and a plurality of supporting members. The base is disposed in the frame body, and the supporting members are disposed annularly at the periphery of the base and connected the base and the frame body. Each of the supporting members has a body portion and a descending portion. A top side of the descending portion is facing the upwind surface of the frame body, and the descending portion is located between the body portion and the frame body. The ratio of the minimum height of the descending portion to the maximum height of the body portion is between 0.82 and 0.92.

What is claimed is: 
     
         1 . A fan frame, comprising:
 a frame body;   a base, disposed in the frame body; and   a plurality of supporting members, disposed annularly at a periphery of the base and connected the base and the frame body, wherein each of the supporting members has a body portion and a descending portion, a top side of the descending portion is facing an upwind surface of the frame body, and the descending portion is located between the body portion and the frame body;   wherein a ratio of a minimum height of the descending portion to a maximum height of the body portion is between 0.82 and 0.92.   
     
     
         2 . The fan frame of  claim 1 , wherein the ratio of the minimum height of the descending portion to the maximum height of the body portion is between 0.85 and 0.88. 
     
     
         3 . The fan frame of  claim 1 , wherein a ratio of a radius distance between a center of the frame body and a junction of the body portion and the descending portion to a minimum radius distance between the center of the frame body and an outer wall of the frame body is between 0.8 and 0.95. 
     
     
         4 . The fan frame of  claim 1 , wherein a ratio of a radius distance between a center of the frame body and a junction of the body portion and the descending portion to a minimum radius distance between the center of the frame body and an outer wall of the frame body is 0.9. 
     
     
         5 . The fan frame of  claim 1 , wherein the supporting member is a static blade or a rib. 
     
     
         6 . The fan frame of  claim 1 , wherein the top side of the descending portion is an arc structure, a curved structure, an oblique line structure, or a polyline structure. 
     
     
         7 . The fan frame of  claim 1 , wherein two opposite sides of the body portion have a parallel structure, a right-trapezoid structure, or an acute-trapezoid structure. 
     
     
         8 . The fan frame of  claim 1 , wherein the supporting member further comprises an end portion connecting the descending portion and the frame body, and one side of the end portion is a plane structure. 
     
     
         9 . A fan frame, comprising:
 a frame body;   a base, disposed in the frame body; and   a plurality of supporting members, disposed annularly at a periphery of the base and connected the base and the frame body, wherein each of the supporting members has a body portion and a descending portion, a top side of the descending portion is facing an upwind surface of the frame body, and the descending portion is located between the body portion and the frame body;   wherein a ratio of a radius distance between a center of the frame body and a junction of the body portion and the descending portion to a minimum radius distance between the center of the frame body and an outer wall of the frame body is between 0.8 and 0.95.   
     
     
         10 . The fan frame of  claim 9 , wherein the ratio of the radius distance between the center of the frame body and the junction of the body portion and the descending portion to the minimum radius distance between the center of the frame body and the outer wall of the frame body is 0.9. 
     
     
         11 . The fan frame of  claim 9 , wherein the supporting member is a static blade or a rib. 
     
     
         12 . The fan frame of  claim 9 , wherein the top side of the descending portion is an arc structure, a curved structure, an oblique line structure, or a polyline structure. 
     
     
         13 . The fan frame of  claim 9 , wherein two opposite sides of the body portion have a parallel structure, a right-trapezoid structure, or an acute-trapezoid structure. 
     
     
         14 . The fan frame of  claim 9 , wherein the supporting member further comprises an end portion connecting the descending portion and the frame body, and one side of the end portion is a plane structure.