HUB STRUCTURE
A hub structure includes an annular body and a flow guide unit. The annular body has a top end and a receiving space. The flow guide unit is disposed at the top end of the annular body. At least one raised section is formed on one face of the flow guide unit opposite to the receiving space. A motor set is disposed in the receiving space. When the motor set operates, the annular body and the flow guide unit are driven to rotate around the axis of a shaft rod. At this time, airflow is conducted through the raised section into the receiving space to dissipate the heat generated by the motor set. Accordingly, the temperature of the motor set can be effectively lowered to prolong the lifetime of the motor set.
1. Field of the Invention The present invention relates generally to an improved hub structure, and more particularly to a hub structure including a flow guide unit. The flow guide unit serves to guide more airflow into the hub structure to enhance heat dissipation effect.
2. Description of the Related Art
Following the rapid development of electronic industries, the performances of all kinds of electronic components have been greatly promoted to have faster and faster processing speed. Also, the internal chipset of an electronic component contains more and more chips. The chips work at high speed and generate high heat at the same time. The heat must be efficiently dissipated outward. Otherwise, the performances of the electronic component will be greatly affected to slow down the processing speed of the electronic component. In some more serious cases, the electronic component may even burn out due to overheating. Therefore, heat dissipation has become a critical issue for all kinds of electronic components. A cooling fan is often used as a heat dissipation device for the electronic components.
A conventional cooling fan includes a hub and blades. Multiple coils and electronic components are received in the hub. The blades extend from the circumference of the hub. The diameter and size of the blades relate to the wind power of the cooling fan. The cooling fan is operated by means of the induction between the coils and the electronic components received in the hub. The coils and electronic components will generate heat in operation. It is an important issue how to dissipate the heat generated by the coils and the electronic components.
By means of the motor set 13, the hub structure 1 can be rotated around the axis of the shaft rod 14. At this time, the coils 131 and electronic components 132 of the motor set 13 generate heat. After a period of operation, the coils 131 and electronic components 132 tend to damage due to overheating. This will shorten the lifetime of the cooling fan. As aforesaid, the top section 12 of the hub structure 1 is formed with multiple through holes 121. When the hub structure 1 operates, some airflow can be conducted through the through holes 121 to the motor set 13 to lower the temperature thereof. However, the airflow cannot be effectively conducted through the through holes 121 to the motor set 13. Therefore, the heat dissipation effect for the motor set 13 is poor. As a result, the motor set 13 is likely to damage due to overheating. This will shorten the lifetime of the cooling fan. Therefore, the conventional hub structure has the following defects:
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- 1. The airflow cannot be effectively conducted.
- 2. The heat dissipation effect for the motor set is poor.
- 3. The motor set is likely to damage due to overheating to shorten the lifetime of the cooling fan.
A primary object of the present invention is to provide an improved hub structure including a flow guide unit. The flow guide unit serves to guide more airflow into the hub structure to enhance heat dissipation effect.
To achieve the above and other objects, the hub structure of the present invention includes an annular body and a flow guide unit. The annular body has a top end and a receiving space. The flow guide unit is disposed at the top end of the annular body. At least one raised section is formed on one face of the flow guide unit opposite to the receiving space. A motor set is disposed in the receiving space. When the motor set operates, the annular body and the flow guide unit are driven to rotate around the axis of a shaft rod. At this time, airflow is conducted through the raised section into the receiving space to dissipate the heat generated by the motor set. Accordingly, the temperature of the motor set can be effectively lowered to prolong the lifetime of the motor set. According to the above, the present invention has the following advantages:
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- 1. The airflow can be effectively conducted into the receiving space.
- 2. The heat dissipation effect for the motor set is enhanced.
- 3. The lifetime of the motor set is prolonged.
The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein:
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In this embodiment, the annular body 21 and flow guide unit 22 of the hub structure 2 are made of metal material. Alternatively, the annular body 21 of the hub structure 2 can be made of plastic material. The annular body 21 and the flow guide unit 22 are integrally connected with each other. The flow guide unit 22 integrally extends from the top end 211 of the annular body 21. The flow guide unit 22 and the annular body 21 are made by means of a measure selected from the group consisting of injection molding, casting, and pressing. The flow guide unit 22 is formed with a central hole 222.
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The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. It is understood that many changes and modifications of the above embodiments can be made without departing from the spirit of the present invention. The scope of the present invention is limited only by the appended claims.
Claims
1. A hub structure comprising:
- an annular body having a top end; and
- a flow guide unit disposed at the top end of the annular body, at least one raised section being formed on one face of the flow guide unit.
2. The hub structure as claimed in claim 1, wherein at least one recessed section is formed on another face of the flow guide unit.
3. The hub structure as claimed in claim 1, wherein the flow guide unit integrally connected with the top end of the annular body.
4. The hub structure as claimed in claim 2, further comprising s a top section integrally connected with the top end of the annular body, the top section being formed with multiple through holes, the flow guide unit being disposed on the top section.
5. The hub structure as claimed in claim 3, wherein the flow guide unit and the annular body are made by means of a measure selected from the group consisting of injection molding and casting.
6. The hub structure as claimed in claim 3, wherein the flow guide unit and the annular body are made by means of pressing.
7. The hub structure as claimed in claim 3, wherein the flow guide unit is formed with a central hole.
8. The hub structure as claimed in claim 1, wherein the annular body has a receiving space, multiple coils and a control circuit being disposed in the receiving space, multiple electronic components being disposed on the control circuit.
9. The hub structure as claimed in claim 1, wherein the annular body is made of metal material.
10. The hub structure as claimed in claim 1, wherein the flow guide unit is made of metal material.
11. The hub structure as claimed in claim 4, wherein the recessed section of the flow guide unit communicates with the through holes of the top section.
Type: Application
Filed: Jul 5, 2011
Publication Date: Jan 10, 2013
Inventor: Chu-Hsien Chou (New Taipei City)
Application Number: 13/176,239
International Classification: F01D 5/14 (20060101);