SWING FAN STRUCTURE
A swing fan structure includes a main body and multiple blades. The main body has an upper face and a lower face. The main body also has a long side and a short side. The blades are side by side disposed on the upper face of the main body in parallel to each other. The blades define therebetween a flow way. The blades are drivable by the main body to reciprocally move along the long side to create an air volume. The swing fan structure has a greatly minified volume. Also, the swing fan structure overcomes the shortcoming of unstable operation of the conventional fan caused by deflection of the blades in rotation.
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1. Field of the Invention
The present invention relates generally to a swing fan structure, and more particularly to a swing fan structure, which has a greatly minified volume. Also, the swing fan structure overcomes the shortcoming of unstable operation of the conventional fan caused by deflection of the blades in rotation.
2. Description of the Related Art
Along with the continuous advance of electronic technologies and industries, the density of transistors of various chips (such as central processor and execution unit) has been more and more increased. This enables the central processor to process data at higher and higher speed. However, the power consumption and heat generated by the central processor have also become higher and higher. In order to keep the central processor stably operating, it has become an important topic how to develop high-efficiency heat dissipation unit for dissipating the heat generated by the central processor.
In order to keep a high-efficiency heat dissipation function, the heat dissipation unit has inevitably become larger and larger and heavier and heavier. However, in design of electronic device such as laptop, tablet, intelligent mobile phone and intelligent handheld electronic device, the limitation of space is always a greatest bottleneck of the design process.
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In order to meet the requirements for lightweight, slimness and miniaturization, the respective components are as minified as possible. Therefore, the centrifugal fan is miniaturized. However, due to the miniaturization of the volume, the blades of the centrifugal fan are very thin. This will cause more vibrations and make louder noise.
According to the above, the conventional fan module has the following shortcomings:
1. The volume is larger.
2. The blades tend to deflect in rotation to cause unstable operation.
SUMMARY OF THE INVENTIONIt is therefore a primary object of the present invention to provide a swing fan structure, which has a greatly minified volume.
It is a further object of the present invention to provide the above swing fan structure, which overcomes the shortcoming of unstable operation of the conventional fan caused by deflection of the blades in rotation.
To achieve the above and other objects, the swing fan structure of the present invention includes a main body and multiple blades. The main body has an upper face and a lower face opposite to the upper face. The main body also has a long side and a short side. The blades are side by side disposed on the upper face of the main body in parallel to each other. Each blade has a locating section disposed on the upper face and a first end extending from the locating section along the short side of the main body. The blades define therebetween a flow way. The blades are drivable by the main body to reciprocally move along the long side.
In the above swing fan structure, the locating sections of the blades are located on the upper face of the main body with the first ends of the blades extending along the short side of the main body. When a power member is turned on, the main body is driven by the power member to move along the long side. At this time, the blades are driven by the main body to reciprocally move. Due to the wing-shaped configuration of the blades and the specific aerodynamic property of the wing-shaped configuration, the airflow around the first ends of the blades are changed to create an air volume through the flow ways. Accordingly, the swing fan structure can be used instead of the conventional fan to minimize the volume of the fan. Also, the swing fan structure overcomes the shortcoming of unstable operation of the conventional fan caused by deflection of the blades in rotation.
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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The blade 21 is wing-shaped. The wing-shaped blade 21 has such an aerodynamic property that the direction of force can be changed due to its shape. For example, a horizontal push force can be converted into lift force or a horizontal rotational torque can be converted into a vertical push force.
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The swing fan structure further includes a power member 3 connected to the main body 20. The power member 3 has a cam 32 and a connection member 31 connected to the cam 32. Multiple slide rails 33 are disposed on inner sides of the sidewalls 222 of the case 22 corresponding to four corners of the main body 20. The four corners of the main body 20 are slidably disposed on the slide rails 33. Accordingly, the blades 21 can be driven by the main body 20 to reciprocally move within the receiving space 223 along the long side 203.
According to the above arrangement, the locating sections 211 of the blades 21 are located on the upper face 201 of the main body 20 with the first ends 212 of the blades 21 extending along the short side 204 of the main body 20. When the power member 3 is turned on, the main body 20 is driven by the power member 3 to move along the long side 203. At this time, the blades 21 are driven by the main body 20 to reciprocally move. Due to the wing-shaped configuration of the blades 21, the airflow around the first ends 212 of the blades 21 are changed to create an air volume through the flow ways 214. Accordingly, the swing fan structure can be used instead of the conventional fan to minimize the volume of the fan. Also, the swing fan structure overcomes the shortcoming of unstable operation of the conventional fan caused by deflection of the blades in rotation.
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According to the above arrangement, when the power member 3 is turned on, the main body 20 is driven by the power member 3 to move along the long side 203. At this time, the blades 21 are driven by the main body 20 to reciprocally move. Due to the wing-shaped configuration of the blades 21 and the specific aerodynamic property of the wing-shaped configuration, the airflow around the first and second ends 212, 213 of the blades 21 are changed to create a greater air volume through the flow ways 214. Accordingly, the swing fan structure can be used instead of the conventional fan to minimize the volume of the fan. Also, the swing fan structure overcomes the shortcoming of unstable operation of the conventional fan caused by deflection of the blades in rotation.
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In conclusion, in comparison with the conventional fan structure, the present invention has the following advantages:
1. The volume of the fan structure is greatly reduced.
2. The shortcoming of unstable operation of the conventional fan structure caused by deflection of the blades in rotation is overcome.
The present invention has been described with the above embodiments thereof and it is understood that many changes and modifications in the above embodiments can be carried out without departing from the scope and the spirit of the invention that is intended to be limited only by the appended claims.
Claims
1. A swing fan structure comprising:
- a main body having an upper face and a lower face opposite to the upper face, the main body also having a long side and a short side; and
- multiple blades side by side disposed on the upper face of the main body in parallel to each other, the blades defining therebetween a flow way, the blades being drivable by the main body to reciprocally move along the long side.
2. A swing fan structure comprising:
- a main body having an upper face and a lower face opposite to the upper face, the main body also having a long side and a short side; and
- multiple blades side by side disposed on the upper face of the main body in parallel to each other, each blade having a locating section disposed on the upper face and a first end extending from the locating section along the short side of the main body, the blades defining therebetween a flow way, the blades being drivable by the main body to reciprocally move along the long side.
3. The swing fan structure as claimed in claim 2, further comprising a case having at least one bottom board and two sidewalls disposed on two opposite sides of the bottom board, the bottom board and the sidewalls together defining a receiving space for receiving the main body and the blades, the receiving space communicating with the flow way between the blades.
4. The swing fan structure as claimed in claim 1, wherein the blades are wing-shaped.
5. The swing fan structure as claimed in claim 3, wherein the upper face of the main body has multiple assembling sections arranged along the long side, the locating section of the blade having a connection section connected to the assembling section.
6. The swing fan structure as claimed in claim 5, wherein the assembling section is an insertion hole or a threaded hole and the connection section is an insertion pin or a screw, the connection section being connected to the assembling section by means of insertion or screwing.
7. The swing fan structure as claimed in claim 6, wherein multiple blades are further disposed under the lower face of the main body, the blades being side by side disposed under the lower face of the main body in parallel to each other.
8. The swing fan structure as claimed in claim 2, wherein the blade further has a second end extending from the locating section along the short side of the main body in a direction reverse to the first end.
9. The swing fan structure as claimed in claim 8, wherein the first and second ends of the blade are made of flexible material.
10. The swing fan structure as claimed in claim 3, further comprising a power member connected to the main body for driving the main body, whereby the blades can be driven by the main body to reciprocally move along the long side.
11. The swing fan structure as claimed in claim 10, wherein the power member has a cam and a connection member connected to the cam, multiple slide rails being disposed on inner sides of the sidewalls of the case corresponding to four corners of the main body, the four corners of the main body being slidably disposed on the slide rails, whereby the main body can be driven to reciprocally move within the receiving space.
Type: Application
Filed: Jan 9, 2013
Publication Date: Jul 10, 2014
Applicant: ASIA VITAL COMPONENTS CO., LTD. (New Taipei City)
Inventors: Bor-Haw Chang (New Taipei City), Liang-Ji Chang (New Taipei City), Chia-Lieh Huang (New Taipei City)
Application Number: 13/737,889
International Classification: F04D 33/00 (20060101);