Fan Housing

Abstract

A fan housing includes a casing body, two air vents, an assembling portion, two supporting ribs and a side outlet. The air vents and assembling portion are formed in a base plate of the casing body. The assembling portion is surrounded by the air vents. The supporting ribs spaces out the air vents. A remaining portion of the base plate other than the air vents, the assembling portion and the supporting ribs being defined as a border that surrounds and adjoins the air vents, with each supporting rib linking the assembling portion and the border. A dividing line is defined in the base plate to divide the casing body into an output section close to the side outlet and a temporarily-staying section away from the side outlet by the dividing line, and each supporting rib is not completely within the output section. Consequently, turbulence in the output section is suppressed.

1 . A fan housing comprising:
 a casing body including a skirt wall and a base plate for the skirt wall to fix, with the skirt wall and base plate delimiting a compartment together;   two air vents being formed in the base plate of the casing body and connecting with the compartment;   an assembling portion being a part of the base plate and surrounded by the two air vents;   two supporting ribs being another part of the base plate and spacing out the two air vents, with a remaining portion of the base plate other than the air vents, the assembling portion and the supporting ribs being defined as a border that surrounds and adjoins the air vents, with each supporting rib linking the assembling portion and the border;   a side outlet being defined in the skirt wall; and   a dividing line being defined in the base plate of the casing body and in an area between and including a tangent touching an outermost point of the assembling portion, and a line parallel to the said tangent and passing through the center of the assembling portion, with the outermost point being closest to the side outlet among points on an periphery of the assembling portion;   wherein the casing body is divided into an output section close to the side outlet and a temporarily-staying section away from the side outlet by the dividing line, and each supporting rib is not completely within the output section.   
   
   
       2 . The fan housing as defined in  claim 1 , wherein the said tangent to the assembling portion at the outermost point is defined as the dividing line. 
   
   
       3 . The fan housing as defined in  claim 2 , wherein the two supporting ribs are arranged outside the output section. 
   
   
       4 . The fan housing as defined in  claim 1 , wherein the line passing through the center of the assembling portion and parallel to the tangent touching the outermost point of the assembling portion is defined as the dividing line. 
   
   
       5 . The fan housing as defined in  claim 4 , wherein the two supporting ribs are opposite to and align with each other, with the dividing line passing through the two supporting ribs. 
   
   
       6 . The fan housing as defined in  claim 4 , wherein the two air vents are respectively within the output section and the temporarily-staying section. 
   
   
       7 . The fan housing as defined in  claim 1 , wherein the air vent that is close to the side outlet is larger than the air vent that is away from the side outlet, with the larger air vent being within the output section and the temporarily-staying section while the smaller air vent is completely within the temporarily-staying section, with all of the supporting ribs being within the temporarily-staying section. 
   
   
       8 . The fan housing as defined in  claim 1 , wherein size of one of the supporting ribs is larger than that of the other supporting rib. 
   
   
       9 . The fan housing as defined in  claim 1 , wherein a direction from a line that passes through the center of the assembling portion and a position where the assembling portion connects with the supporting rib to another line that passes through the position where the assembling portion connects with the supporting rib and another position where the supporting rib connects with the border is the same as the direction of airflow in the compartment. 
   
   
       10 . The fan housing as defined in  claim 1 , wherein widths of portions of each supporting rib from the position where the supporting rib connects with the assembling portion to the position where the supporting rib connects with the border are gradually increased. 
   
   
       11 . The fan housing as defined in  claim 1  further comprises a lid mounted on top of the casing body and having an air inlet that connects with the compartment. 
   
   
       12 . A fan housing comprising:
 a casing body including a base plate for a lid having a side outlet and an air inlet to be mounted on;   two air vents being formed in the base plate of the casing body;   an assembling portion being a part of the base plate and surrounded by the two air vents;   two supporting ribs being another part of the base plate and spacing out the two air vents, with a remaining portion of the base plate other than the air vents, the assembling portion and the supporting ribs being defined as a border that surrounds and adjoins the air vents, with each supporting rib linking the assembling portion and the border; and   a dividing line being defined in the base plate of the casing body and in an area between and including a tangent touching an outermost point of the assembling portion, and a line parallel to the said tangent and passing through the center of the assembling portion, with the outermost point being closest to the side outlet among points on an periphery of the assembling portion;   wherein the casing body is divided into an output section close to the side outlet and a temporarily-staying section away from the side outlet by the dividing line, and each supporting rib is not completely within the output section.   
   
   
       13 . The fan housing as defined in  claim 12 , wherein the said tangent to the assembling portion at the outermost point is defined as the dividing line. 
   
   
       14 . The fan housing as defined in  claim 13 , wherein the two supporting ribs are arranged outside the output section. 
   
   
       15 . The fan housing as defined in  claim 12 , wherein the line passing through the center of the assembling portion and parallel to the tangent touching the outermost point of the assembling portion is defined as the dividing line. 
   
   
       16 . The fan housing as defined in  claim 12 , wherein the two supporting ribs are opposite to and align with each other, with the dividing line passing through the two supporting ribs. 
   
   
       17 . The fan housing as defined in  claim 15 , wherein the two air vents are respectively within the output section and the temporarily-staying section. 
   
   
       18 . The fan housing as defined in  claim 12 , wherein the air vent that is close to the side outlet is larger than the air vent that is away from the side outlet, with the larger air vent being within the output section and the temporarily-staying section while the smaller air vent is completely within the temporarily-staying section, with all of the supporting ribs being within the temporarily-staying section. 
   
   
       19 . The fan housing as defined in  claim 12 , wherein size of one of the supporting ribs is larger than that of the other supporting rib. 
   
   
       20 . The fan housing as defined in  claim 12 , wherein a direction from a line that passes through the center of the assembling portion and a position where the assembling portion connects with the supporting rib to another line that passes through the position where the assembling portion connects with the supporting rib and another position where the supporting rib connects with the border, is the same as the direction of airflow in the compartment. 
   
   
       21 . The fan housing as defined in  claim 12 , wherein widths of portions of each supporting rib from the position where the supporting rib connects with the assembling portion to the position where the supporting rib connects with the border are gradually increased. 
   
   
       22 . The fan housing as defined in  claim 12  further comprises the lid mounted on the casing body, with a skirt wall being fixedly formed around the lid to delimit a compartment connecting with the air inlet of the lid. 
   
   
       23 . The fan housing as defined in  claim 22 , wherein the side outlet is defined by the skirt wall and connecting with the compartment.