Fan frame and heat dissipation fan having the same

• US 10,385,876 B2
• Filed: 07/25/2016
• Issued: 08/20/2019
• Est. Priority Date: 11/24/2015
• Status: Active Grant

• Current Assignee: Champ Tech Optical (FOSHAN) Corporation (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Champ Tech Optical (FOSHAN) Corporation (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Lin, Hsien-Chou, Ma, Xiao-Guang, Lin, Yung-Ping, Cheng, Chien-Nan, Luo, Zheng
• Primary Examiner(s): Rivera, Carlos A
• Assistant Examiner(s): Pruitt, Justin A
• Application Number:
  US15/218,288
• Publication Number:
  US 20170146032A1
• Time in Patent Office: 1,121 Days
• Field of Search: 415220
• CPC Class Codes: F04D 25/0606 the electric motor being specially adapted for integration in the pump
• CPC Class Codes: F04D 25/0646 Details of the stator
• CPC Class Codes: F04D 25/08 the working fluid being air, e.g. for ventilation
• CPC Class Codes: F04D 29/023 especially adapted for elastic fluid pumps
• CPC Class Codes: F04D 29/26 Rotors specially for elastic fluids
• CPC Class Codes: F04D 29/403 especially adapted for elastic fluid pumps
• CPC Class Codes: F04D 29/522 especially adapted for elastic fluid pumps
• CPC Class Codes: F04D 29/668 damping or preventing mechanical vibrations
• CPC Class Codes: F05B 2240/14 Casings, housings, nacelles, gondels or the like, protecting or supporting assemblies there within
• CPC Class Codes: F05B 2240/20 Rotors
• CPC Class Codes: F05B 2280/4003 Synthetic polymers, e.g. plastics
• CPC Class Codes: F05B 2280/4004 Rubber
• CPC Class Codes: F05B 2280/401 Silicon polymers

Abstract

A vibration-proofed fan frame includes a housing and a base surrounded by the housing. A hollow tube is arranged on the base and has the rotary connection with an impeller of the heat dissipation fan. The base includes a disc and a plurality of ribs extending outwards from periphery of the disc. The fan frame further includes a buffer member within the structural interconnections between the disc and the housing. The buffer member includes first elements. The first elements are embedded in the disc. A heat dissipation fan having the fan frame described is also presented.

Claims

1. A fan frame, comprising:

a housing;

a base surrounded by the housing, the base comprising;

a disc;

a hollow tube mounted on the disc, the hollow tube having a rotary connection with an impeller of a heat dissipation fan; and

a plurality of ribs extending outwards from periphery of the disc, the ribs interconnecting the housing and the disc; and

a buffer member operable to absorb vibrations created by the heat dissipation fan during operation, the buffer member comprising;

at least one first damping section embedded in the disc; and

at least one second damping section embedded in the ribs, wherein the second damping sections are positioned at connecting portions of the ribs which are connected to the disc.

2. The fan frame of claim 1, wherein the disc comprises an inner surface and an outer surface, the inner surface defines a hole at the center of the disc, the outer surface is periphery of the disc, the first damping section is located between the inner surface and the outer surface.

3. The fan frame of claim 2, wherein a distance between each first damping section and the outer surface is less than a distance between the corresponding first damping section and the inner surface.

4. The fan frame of claim 3, wherein a quantity of the first damping section is one, the first damping section is annular.

5. The fan frame of claim 3, wherein a quantity of the first damping section is two or more, each of the first damping sections is annular, the first damping sections are concentric and isolated from each other.

6. The fan frame of claim 1, wherein a quantity of the second damping section is two or more, one of the second damping sections is positioned on connecting portions of the ribs which are connected to the housing.

7. The fan frame of claim 6, wherein one of the second damping sections is positioned on central portions of the ribs which are between the housing and the disc.

8. The fan frame of claim 7, wherein parts of each of the second damping sections embedded in the ribs are located at one circumference.

9. The fan frame of claim 1, wherein the buffer member further comprises a third damping section embedded in the housing.

10. The fan frame of claim 1, wherein the buffer member is made of silicon resin, rubber, plastic or sponge.

14. The heat dissipation fan of claim 1, wherein a quantity of the second damping section is two or more, one of the second damping sections is positioned on connecting portions of the ribs which are connected to the housing.

15. The heat dissipation fan of claim 14, wherein one of the second damping sections is positioned on central portions of the ribs which are between the housing and the disc.

11. A heat dissipation fan, comprising:

a fan frame comprising;

a housing;

a base surrounded by the housing, the base comprising;

a disc;

a hollow tube formed at the center of the disc; and

a plurality of ribs extending outwards from periphery of the disc, the ribs interconnecting the housing and the disc; and

a buffer member operable to absorb vibrations created by the heat dissipation fan during operation, the buffer member comprising;

at least one first damping section embedded in the disc; and

at least one second damping section embedded in the ribs, wherein the second damping sections are positioned at connecting portions of the ribs which are connected to the disc; and

an impeller received in the fan frame, the hollow tube having a rotary connection with the impeller.

12. The heat dissipation fan of claim 11, wherein the disc comprises an inner surface and an outer surface, the inner surface defines a hole at the center of the disc, the outer surface is periphery of the disc, the first damping section is located between the inner surface and the outer surface.

13. The fan frame of claim 12, wherein a distance between each first damping section and the outer surface is less than a distance between the corresponding first damping section and the inner surface.

16. The heat dissipation fan of claim 12, wherein the buffer member further comprises a third damping section embedded in the housing.