CN203856776U - Centrifugal fan and electronic equipment - Google Patents
Centrifugal fan and electronic equipment Download PDFInfo
- Publication number
- CN203856776U CN203856776U CN201420262637.3U CN201420262637U CN203856776U CN 203856776 U CN203856776 U CN 203856776U CN 201420262637 U CN201420262637 U CN 201420262637U CN 203856776 U CN203856776 U CN 203856776U
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- air inlet
- centrifugal fan
- spoiler
- fan
- end surface
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- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 239000006185 dispersion Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a centrifugal fan and electronic equipment. The centrifugal fan comprises a fan body and two or more than two interceptors, wherein the fan body comprises an end surface with an air inlet; and the interceptors are arranged on the end surface, and are outwards scattered from the edge of the air inlet, so that distribution of air flow in the air inlet is changed, and eddy is reduced. According to the technical scheme, the centrifugal fan is simple in structure; and noise caused by the eddy is reduced under the condition that the heat dissipation performance of the centrifugal fan is not affected.
Description
Technical Field
The utility model relates to an electronic equipment especially relates to a centrifugal fan and electronic equipment.
Background
With the continuous development of electronic technology, electronic devices are becoming more and more compact, and for small electronic devices, users need to use the electronic devices in close proximity during use. In order to prevent the electronic device from being damaged by heat generated during the operation of the electronic device, a fan is usually disposed on the electronic device. When a small electronic device is used in a close range, noise generated by the fan may cause a bad user experience.
When the fan of the prior art operates, the noise generated by the fan mainly includes aerodynamic noise (i.e. airflow noise), and the airflow noise includes: periodic exhaust noise generated by pressure pulsation caused by periodic outward exhaust when the fan impeller rotates; and vortex noise caused when the gas vortex splits at the wind impeller interface. Periodic exhaust noise is unavoidable, and eddy noise depends on the shape of the fan impeller, the flow velocity and flow pattern of the airflow relative to the body. The fan with the prior structure is easy to form vortex at the air inlet as shown in figure 1, and the gas vortex is split violently on the interface of the wind impeller so as to generate vortex noise. Therefore, the eddy current noise of the fan can be effectively reduced by reducing the eddy current generation of the air inlet.
Therefore, it is desirable to provide a fan with a novel structure for reducing the generation of eddy currents in the air inlet, so as to reduce the noise of the fan while satisfying the heat dissipation requirement, and to make the fan more practical.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a centrifugal fan and an electronic apparatus having a novel structure, wherein the technical problem to be solved is to reduce noise while satisfying heat dissipation requirements.
The utility model discloses an aim at and solve its technical problem and adopt following technical scheme to realize:
in a first aspect, the present invention provides a centrifugal fan, comprising:
the fan body comprises an end face provided with an air inlet;
two or more spoilers provided on the end surface;
the two or more spoilers are distributed from the edge of the air inlet in an outward scattering mode and used for changing the air flow distribution at the air inlet and reducing the generation of vortex.
Optionally, in the centrifugal fan, the spoiler is a straight plate or a curved plate.
Optionally, in the centrifugal fan, an end surface of the spoiler near the edge of the air inlet is an arc surface.
Optionally, in the centrifugal fan, the spoiler and the end surface form an angle of 90 degrees.
Optionally, in the centrifugal fan, the air inlet is circular, and the two or more spoilers are uniformly distributed from the edge of the air inlet outward along the radial direction of the air inlet.
Optionally, in the centrifugal fan, a length of the spoiler is equal to a distance from the edge of the air inlet to the outer edge of the end surface at the position where the spoiler is disposed.
In a second aspect, the present invention provides an electronic device, including: a centrifugal fan; wherein the centrifugal fan includes:
the fan body comprises an end face provided with an air inlet;
two or more spoilers provided on the end surface;
the two or more spoilers are distributed from the edge of the air inlet in an outward scattering mode and used for changing the air flow distribution at the air inlet and reducing the generation of vortex.
Optionally, the electronic device is a notebook computer or a one-piece computer.
Borrow by above-mentioned technical scheme, the utility model discloses the structure has following advantage at least:
the utility model provides a technical scheme is through setting up the spoiler on the terminal surface of the air intake department of fan organism for the spoiler can change and flow through the air current distribution of air intake department reduces the vortex and produces, with the noise that reduces because of the vortex produces. The utility model provides a technical scheme simple structure realizes with low costs, and does not influence centrifugal fan's heat dispersion.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
The present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of a vortex of air generated at an air inlet of a prior art fan;
fig. 2 is a schematic view of an implementation structure of a centrifugal fan according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating a flow state of gas at an air inlet of a centrifugal fan according to an embodiment of the present invention;
fig. 4 is a schematic view of another implementation structure of the centrifugal fan according to the first embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to a second embodiment of the present invention.
Detailed Description
The embodiment of the utility model provides an on providing a centrifugal fan and electronic equipment, the big problem of noise of fan among the prior art has been solved, centrifugal fan and electronic equipment of a novel structure is proposed to noise reduction when satisfying the heat dissipation requirement, and realize simple structure, it is with low costs.
The utility model discloses technical scheme for solving above-mentioned technical problem, the general thinking is as follows:
the fan body comprises an end face provided with an air inlet;
two or more spoilers provided on the end surface;
the two or more spoilers are distributed from the edge of the air inlet in an outward scattering mode and used for changing the air flow distribution at the air inlet and reducing the generation of vortex.
Based on same utility model think, the utility model provides an electronic equipment, electronic equipment includes: the centrifugal fan described above.
The utility model provides a technical scheme is through setting up the spoiler on the terminal surface of the air intake department of fan organism for the spoiler can change and flow through the air current distribution of air intake department reduces the vortex and produces, with the noise that reduces because of the vortex produces. The utility model provides a technical scheme simple structure realizes with low costs, and does not influence centrifugal fan's heat dispersion.
To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the present invention, the following detailed description of the embodiments, structures, features and effects of the test stand according to the present invention will be made with reference to the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Example one
As shown in fig. 2 and 3, a schematic structural diagram of a centrifugal fan according to an embodiment of the present invention is provided. As shown in fig. 2, the centrifugal fan according to the first embodiment includes: a fan body 10 and two or more spoilers 20. The fan body 10 includes an end surface 12 provided with an air inlet 11. The two or more spoilers 20 are provided on the end surface 12. Wherein the two or more spoilers 20 are distributed scattered outward from the edge of the air inlet 11 for changing the air flow distribution at the air inlet 11 to reduce the generation of vortex. Through tests, the air flow distribution at the air inlet of the centrifugal fan with the structure provided by the embodiment is the condition shown in fig. 3. Obviously, compared with the fan in the prior art, the centrifugal fan with the structure provided by the embodiment reduces the generation of the vortex at the air inlet, and further reduces the noise caused by the vortex.
In this embodiment, the angle between the spoiler 20 and the end surface 12 may be any angle. Specifically, as shown in fig. 2, the spoiler 20 may be disposed at an angle of 90 degrees with respect to the end surface 12 (as shown in fig. 2 and 4), so that the spoiler 20 can better change the airflow distribution flowing through the air inlet 11, and effectively reduce the generation of vortex, thereby better reducing the noise caused by the vortex and making the centrifugal fan less noisy.
The embodiment of the utility model provides a through with the spoiler setting on the terminal surface of the air intake department of fan organism for the spoiler can change to flow through the air current distribution of air intake department reduces the vortex and produces, with the noise that reduces the vortex and lead to. The utility model provides a technical scheme simple structure realizes with low costs, and does not influence centrifugal fan's heat dispersion.
Further, as shown in fig. 2 and 4, the spoiler 20 in the above embodiment may be a straight plate (as shown in fig. 2); alternatively, the spoiler 20 in the above embodiment may be a curved plate, such as a C-shaped curved plate shown in fig. 4, or an S-shaped curved plate, etc. The relevant parameters of the spoiler 20, such as the length, width and height of the spoiler 20, can be determined according to the actual design requirements (such as the minimum noise requirement), the shape of the fan body, the size of the air inlet, and other factors. What needs to be added here is: the spoiler top plate may be a surface parallel to the end surface 12 of the fan body, or may be a surface having a certain undulation width. Similarly, the arrangement of the top plate of the spoiler can also be determined according to the actual design requirements (such as the requirement of lowest noise) and the factors of the shape of the fan body, the size of the air inlet amount and the like.
Specifically, as shown in fig. 2, the length of the spoiler 20 is equal to the distance from the edge of the air inlet 11 to the outer edge of the end surface 12 at the position where the spoiler 20 is disposed.
In the above embodiment, the end surface 12 of the spoiler 20 near the edge of the air inlet 11 is an arc surface, so as to prevent the spoiler 20 near the end surface 12 near the edge of the air inlet 11 from blocking the airflow flowing into the air inlet 11, thereby ensuring the airflow flowing into the air inlet 11, and ensuring the heat dissipation performance of the centrifugal fan.
Further, the shape of the air inlet 11 in the above embodiments may be various, such as an oval shape, a circular shape, etc. In the embodiment of the present invention, the air inlet 11 is circular. When the air inlet 11 is circular, the two or more spoilers 20 are uniformly distributed outward from the edge of the air inlet 11 along the radial direction of the air inlet 11 (as shown in fig. 2), so that the airflow at the edge of the air inlet 11 is dynamically balanced, and the airflow flowing through the air inlet 11 is uniformly distributed (as shown in fig. 3) and thus the noise is effectively reduced.
Example two
As shown in fig. 5, the electronic device according to the second embodiment of the present invention is schematically illustrated. As shown in fig. 5, the electronic apparatus includes: a centrifugal fan 100. The centrifugal fan 100 is provided in a casing of the electronic device body, and is used for dissipating heat of a heat generating component built in the casing of the electronic device. As shown in fig. 2, the centrifugal fan 100 includes: a fan body 10 and two or more spoilers 20. The fan body 10 includes an end surface 12 provided with an air inlet 11. The two or more spoilers 20 are provided on the end surface 12. Wherein the two or more spoilers 20 are distributed scattered outward from the edge of the air inlet 11 for changing the air flow distribution at the air inlet 11 to reduce the generation of vortex.
Specifically, the centrifugal fan 100 in the second embodiment may directly adopt the centrifugal fan 100 provided in the first embodiment, and the specific implementation structure may refer to the related contents described in the first embodiment, and is not described herein again.
The electronic device in the above embodiments may be a notebook computer, an all-in-one computer, or the like.
Through the technical proposal provided by the utility model and the comparative test of the centrifugal fan with the prior structure, compared with the prior fan, the structure that the spoiler is arranged on the end surface of the air inlet of the fan body is adopted,
the effect of reducing noise caused by eddy current is more obvious, please refer to the comparative data in table 1 specifically:
table 1 comparative data
| Speed (rpm) | Air quantity Q (cfm) | Noise (dB) | |
| No spoiler | 6000 | 15.51 | 57.4 |
| With spoilers | 6000 | 15.53 | 56.5 |
As can be seen from table 1, the noise of the existing fan without the spoiler is significantly larger than that of the fan with the spoiler provided by the present invention.
The embodiment of the utility model provides a through with the spoiler setting on the terminal surface of the air intake department of fan organism for the spoiler can change to flow through the air current distribution of air intake department reduces the vortex and produces, with the noise that reduces the vortex and lead to. The utility model provides a technical scheme simple structure, and do not influence centrifugal fan's heat dispersion.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. A centrifugal fan, comprising:
the fan body comprises an end face provided with an air inlet;
two or more spoilers provided on the end surface;
wherein,
the two or more spoilers are distributed from the edge of the air inlet in an outward scattering mode and used for changing the air flow distribution at the air inlet and reducing the generation of vortex.
2. The centrifugal fan of claim 1 wherein said spoilers are straight or curved plates.
3. The centrifugal fan according to claim 1 or 2, wherein the end surface of the spoiler near the air inlet edge is an arc surface.
4. The centrifugal fan according to claim 1 or 2, wherein the spoiler is 90 degrees from the end surface.
5. The centrifugal fan as claimed in claim 4, wherein the air inlet is circular, and the two or more spoilers are uniformly distributed from the edge of the air inlet outward in a radial direction of the air inlet.
6. The centrifugal fan as claimed in claim 5, wherein the length of the spoiler is equal to the distance from the air inlet edge to the outer edge of the end surface at the position where the spoiler is disposed.
7. An electronic device, comprising: the centrifugal fan according to any one of claims 1 to 6.
8. The electronic device of claim 7, wherein the electronic device is a laptop computer or a all-in-one computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420262637.3U CN203856776U (en) | 2014-05-21 | 2014-05-21 | Centrifugal fan and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420262637.3U CN203856776U (en) | 2014-05-21 | 2014-05-21 | Centrifugal fan and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856776U true CN203856776U (en) | 2014-10-01 |
Family
ID=51606630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420262637.3U Expired - Lifetime CN203856776U (en) | 2014-05-21 | 2014-05-21 | Centrifugal fan and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856776U (en) |
-
2014
- 2014-05-21 CN CN201420262637.3U patent/CN203856776U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141001 |