Patent Publication Number: US-9841035-B2

Title: Heat dissipation fan

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority to Chinese Patent Application No. 201510219977.7 filed on May 4, 2015, the contents of which are incorporated by reference herein. 
     FIELD 
     The subject matter herein generally relates to a heat dissipating device, especially, relates to a heat dissipation fan. 
     BACKGROUND 
     A fan is used to cool electrical components of electrical devices. The fan may be an axial fan or centrifugal fan. However, each the axial fan or the centrifugal fan has an outlet oriented towards a desired direction. When the outlet is covered, the electrical device may overheat. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Implementations of the present technology will now be described, by way of example only, with reference to the attached figures. 
         FIG. 1  is an assembled view of a heat dissipation fan of the present disclosure. 
         FIG. 2  is an assembled view similar to the heat dissipation fan of  FIG. 1  but show from another angle. 
         FIG. 3  is an exploded view of the heat dissipation fan of  FIG. 1 . 
         FIG. 4  is an exploded view of the heat dissipation fan of  FIG. 2 . 
         FIG. 5  is a cross sectional view of the heat dissipation fan of the present disclosure, taken along V-V line of  FIG. 1 . 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     It will be appreciated that for simplicity and clarity of illustration, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure. The description is not to be considered as limiting the scope of the embodiments described herein. 
     A definition that applies throughout this disclosure will now be presented. The term “comprising” means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in a so-described combination, group, series and the like. 
     Referring to  FIGS. 1-2 , a heat dissipation fan  100  of the present disclosure includes a base plate  10 , a frame  20  formed on a top side of the base plate  10 , a stator  30  received in the frame  20 , and a rotor  40  below the stator  30  and connected with the stator  30 . 
     Referring also to  FIGS. 3-4 , the base plate  10  is a rectangular plate. The base plate  10  has a first side  101  and a second side  102  located opposite to the first side  101 . A side wall  103  protrudes vertically downward from a periphery of the second side  102 . The side wall  103  includes a first fixing portion  1031  and a second fixing portion  1032  to fix the heat dissipation fan to electrical device. The first fixing portion  1031  and the second portion  1032  protrude towards an extending direction of the side wall  103 . In at least one embodiment, the number of the first fixing portion  1031  is four, the first fixing portions  1031  are respectively located at edges of two ends of the side wall  103 ; the number of the second fixing portion  1032  is four, the second fixing portions  1032  are respectively located at edges of the other side wall  103 . A height of the first fixing portion  1031  is more than that of the second fixing portion  1032 . An inner side of each first fixing portion  1031  has a through hole  1033 . 
     The base plate  10  has a circular hole  11  defined in a central portion thereof. The circular hole  11  extends through the first side  101  and the second side  102 . An end of the circular hole  11  towards the second side  102  is an air inlet  110 . 
     The frame  20  is protruded upward and vertically from edges of the circular hole on the first side  101 . The frame  20  includes a main portion  21 . The main portion  21  defines a first air outlet  22  configured on a top end of the main portion  21 , relatively to the air inlet  110 , and a second outlet  23 . An extending direction of the second air outlet  23  is angled with that of the first air outlet  22 . Preferable, the extending direction of the first air outlet  22  and that of the second outlet are perpendicular. 
     The main portion  21  is arc-shaped and defines a cutout  210  on a side thereof. A first extending portion  211 , a second extending portion  212  and a connecting plate  213  are extended outward along edges of the cutout  210  of the main portion  21 . Specifically, the first extending portion  211  and the second extending portion  212  are face to each other and extend from opposite edges of the cutout  210 . The first extending portion  211  and the second extending portion  212  are tangent with an outer periphery of the main portion  21 . The connecting plate  213  extends from a bottom edges of the cutout  210  to connect bottom ends of the first extending portion  211  and the second extending portion  212 . The first extending portion  211 , the second extending portion  212 , and the connecting plate  213  are cooperatively to define the second air outlet  23 . An extending direction of the second air outlet  23  is vertical with an extending direction of the first air outlet  22 . 
     The stator  30  is circular-shaped. A rotating shaft  32  is formed downward from an central portion of the stator  30  to drive the rotor  40 . The stator  30  is connected with the frame  20  by a plurality of connecting arms  31 . In at least this embodiment, the number of the connecting arms is four, and between each connecting arm is angled at 90 degree. 
     The rotor  40  is cylindrical, and received in the frame  20  to connect with the stator  30  by a rotating shaft  32 . The rotor  40  includes a wheel hub  41  and multiple blades  42  extended outward and radially from peripheries of the wheel hub  41 . 
     Referring to  FIG. 5 , when the heat dissipation fan  100  is assembled, the rotor  40  connects with the stator  30  by the rotating shaft  32 , and is received in the frame  20 , an outer top end of the blades  42  is beyond of a top surface of the connecting plate  213 . The airflow enters from the air inlet  110  and discharges from either of the first air outlet  22  and the second air outlet  23 . 
     In this disclosure, both the first air outlet  22  and the second air outlet  23  discharge the airflow, so the heat dissipation fan  100  has a high cooling efficiency. While the first air outlet  22  or the second air outlet  23  is blocked, the heat dissipation fan  100  can discharge the airflow through the second air outlet  23  or the first air outlet  22 . It can be understood that, the heat dissipation fan  100  of the present disclosure can configured multiple air outlets to avoid being blocking. An angle is defined between each of the first air outlets and multiple air outlets. 
     It is to be further understood that even though numerous characteristics and advantages have been set forth in the foregoing description of embodiments, together with details of the structures and functions of the embodiments, the disclosure is illustrative only; and that changes may be made in the details, including in matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed. 
     The embodiments shown and described above are only examples. Many details are often found in the art such as the other features of a heat dissipation fan. Therefore, many such details are neither shown nor described. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the detail, including in matters of shape, size and arrangement of the parts within the principles of the present disclosure up to, and including the full extent established by the broad general meaning of the terms used in the claims. It will therefore be appreciated that the embodiments described above may be modified within the scope of the claims.