Patent Application
20170146032
The subject matter relates to a heat dissipation fan, and particularly relates to a fan frame and a heat dissipation fan having the same.
A traditional fan includes a stator, a rotor, and a fan frame receiving the stator and the rotor. In operation, the rotor is driven by a motor to rotate relative to the stator, therefore dissipating heat generated from electronic elements. However, because of uneven mass distribution of the rotor and transformed moments of the motor, vibration and noise can be caused when the fan is working and stability of a heat sink including the fan is reduced.
Implementations of the present technology will now be described, by way of example only, with reference to the attached figures:
It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, 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 have been exaggerated to better illustrate details and features of the present disclosure.
Several definitions that apply throughout this disclosure will now be presented.
The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “substantially” is defined to be essentially conforming to the particular dimension, shape, or other feature that the term modifies, such that the component need not be exact. For example, “substantially cylindrical” means that the object resembles a cylinder, but can have one or more deviations from a true cylinder. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the like.
Referring to
The heat dissipation fan 1 may be an aerofoil fan. The fan frame 10 includes a housing 11 and a base 12 surrounded by the housing 11.
The housing 11 is substantially cuboid-shaped. The housing 11 is hollow. The housing 11 includes a first end face 111 and a second end face 112. The first end face 111 and the second end face 112 are opposite to each other. The impeller 20 is received between the first end face 111 and the second end face 112.
The base 12 is arranged adjacent to the second end face 112 of the housing 11. A bottom face of the base 12 is coplanar with the second end face 112. The base 12 includes a disc 121, a plurality of ribs 122, and a hollow tube 123. The disc 121 is positioned at the center of the base 12. The ribs 122 interconnect the disc 121 and housing 11. The hollow tube 123 is formed at the center of the disc 121.
In this exemplary embodiment, the disc 121 is substantially cylindrical, and a cross-section of the disc 121 is substantially U-shaped. The disc 121 is hollow. A hole 1213 is defined at the center of the disc 121. The disc 121 includes an inner surface 1211 and an outer surface 1212. The inner surface 1211 is cylindrical and defines the hole 1213. In other words, the inner surface 1211 is an inner wall of the hole 1213. The outer surface 1212 is a periphery of the disc 121.
The ribs 122 are formed on the outer surface 1212 of the disc 121. The ribs 122 extend outwards from the outer surface 1212 of the disc 121 radially until interconnecting with an inner wall of the housing 11. Each rib 122 is substantially a thick and straight line. The ribs 122 are positioned adjacent to the second end face 112 of the housing 11.
The hollow tube 123 is formed on a top surface of the disc 121. The hollow tube 123 extends from a center part of the top surface of the disc 121 upwards. A channel 1231 is defined at the center of the hollow tube 123. The channel 1231 of the hollow tube 123 and the hole 1213 of the disc 121 are used for fixing and carrying the impeller 20. The hollow tube 123 has a rotary connection with the impeller 20.
The fan frame 10 can further include a buffer member 13. The buffer member 13 is made of damping material. The damping material may be silicon resin, rubber, plastic, sponge and so on.
In the first exemplary embodiment, the buffer member 13 includes a first buffer element 131. The first buffer element 131 is embedded in the disc 121. The first buffer element 131 is substantially annular. The first buffer element 131 is located between the inner surface 1211 and the outer surface 1212 of the disc 121. The first buffer element 131 is adjacent to the outer surface 1212. A distance between the first buffer element 131 and the outer surface 1212 is less than a distance between the first buffer element 131 and the inner surface 1211.
When the heat dissipation fan 1 is operating, the impeller 20 rotates, causing vibrations in the heat dissipation fan 1. The buffer member 13 is embedded in the fan frame 10, and is located a transmitting path of the vibrations caused by the impeller 20. The housing 11 is thus isolated from the vibrations. Since the housing 11 is used for connecting other cooling elements and is isolated from the vibration during operation, the connection between the housing 11 and the cooling elements is protected.
In other exemplary embodiments, the first buffer element 131 may have other shapes, such as rectangular frame, polygonal and so on. It is not limited to being annular.
In the first exemplary embodiment, the quantity of the first buffer elements 131 is one. In other exemplary embodiments, the quantity of the first buffer elements 131 may be at least two. Referring to
Referring to
Referring to
The embodiments shown and described above are only examples. Many details are often found in the art such as the other features of the fan frame. 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, especially 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.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201510823982.9 | Nov 2015 | CN | national |
