Fan and fan frame thereof

Abstract

A fan frame of a fan includes a main body, a base and at least one connecting element. The main body has at least one mounting portion and at least one auxiliary passage, which are not communicated with each other. A main passage is disposed in the main body, and the auxiliary passage is obliquely communicated with the main passage from the upper part of the main body. The base is disposed in the central portion of the main body. The connecting element is disposed between the main body and the base. A fan including such fan frame is also disclosed.

1 . A fan frame, comprising:
 a main body comprising at least one mounting portion and at least one auxiliary passage, wherein a main passage is disposed in the main body, and the auxiliary passage is not communicated with the mounting portion.   
   
   
       2 . The fan frame of  claim 1 , further comprising a base disposed in a central portion of the main body and at least one connecting element disposed between the main body and the base. 
   
   
       3 . The fan frame of  claim 2 , wherein the connecting element, the base and the main body are integrally formed as a single unit. 
   
   
       4 . The fan frame of  claim 1 , wherein the auxiliary passage is disposed at a corner and/or a side of the main body. 
   
   
       5 . The fan frame of  claim 1 , wherein the auxiliary passage is obliquely communicated with the main passage with an oblique angle. 
   
   
       6 . The fan frame of  claim 5 , wherein the oblique angle is between 20 and 50 degrees. 
   
   
       7 . The fan frame of  claim 1 , wherein the auxiliary passage is disposed on a side of the corresponding mounting portion and the mounting portion is located at a corner of the main body. 
   
   
       8 . The fan frame of  claim 1 , wherein a confluence of the auxiliary passage and the main passage is located between ⅓ and ½ of the main body along an air intake direction. 
   
   
       9 . The fan frame of  claim 1 , wherein the mounting portion is a through hole. 
   
   
       10 . The fan frame of  claim 1 , wherein
 the auxiliary passage is obliquely communicated with the main passage from an upper part of the main body.   
   
   
       11 . A fan, comprising:
 a fan frame comprising a main body, wherein the main body comprises at least one mounting portion and at least one auxiliary passage, a main passage is disposed in the main body and the auxiliary passage is not communicated with the mounting portion;   a motor disposed in the fan frame; and   an impeller disposed in the fan frame and connected to the motor so that the motor drives the impeller to rotate.   
   
   
       12 . The fan of  claim 11 , wherein the fan frame further comprises a base disposed at a central portion of the main body, and at least one connecting element disposed between the main body and the base. 
   
   
       13 . The fan of  claim 12 , wherein the connecting element, the base and the main body are integrally formed as a single unit. 
   
   
       14 . The fan of  claim 11 , wherein the auxiliary passage is disposed at a corner and/or a side of the main body. 
   
   
       15 . The fan of  claim 11 , wherein the auxiliary passage is obliquely communicated with the main passage with an oblique angle. 
   
   
       16 . The fan of  claim 15 , wherein the oblique angle is between 20 and 50 degrees. 
   
   
       17 . The fan of  claim 11 , wherein the auxiliary passage is disposed on a side of the corresponding mounting portion, and the mounting portion is located at a corner of the main body. 
   
   
       18 . The fan of  claim 11 , wherein a confluence of the auxiliary passage and the main passage is located between ⅓ and ½ of the main body along an air intake direction. 
   
   
       19 . The fan of  claim 11 , wherein the mounting portion is a through hole. 
   
   
       20 . The fan of  claim 11 , wherein the auxiliary passage is obliquely communicated with the main passage from an upper part of the main body.