CN117365982A - Heat dissipation fan and electronic equipment - Google Patents
Heat dissipation fan and electronic equipment Download PDFInfo
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- CN117365982A CN117365982A CN202311675772.0A CN202311675772A CN117365982A CN 117365982 A CN117365982 A CN 117365982A CN 202311675772 A CN202311675772 A CN 202311675772A CN 117365982 A CN117365982 A CN 117365982A
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 51
- 230000001133 acceleration Effects 0.000 claims abstract description 8
- 230000000712 assembly Effects 0.000 claims description 20
- 238000000429 assembly Methods 0.000 claims description 20
- 238000010586 diagram Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention provides a heat dissipation fan and electronic equipment, and belongs to the technical field of heat sinks. The heat dissipation fan includes: the fan frame is internally provided with a heat dissipation cavity, and an air inlet and an air outlet which are communicated with the heat dissipation cavity are arranged on the fan frame; the fan wheel is rotatably arranged in the heat dissipation cavity, an airflow channel is defined between the outer periphery of the fan wheel and the cavity wall of the heat dissipation cavity, the airflow channel is at least divided into a rotary acceleration area and a advection area along the air flow direction, and the advection area is communicated with the air outlet; the tongue rod is arranged in the heat dissipation cavity and is close to the air outlet, an air inlet channel which is communicated with the air outlet and the rotary accelerating area is defined between the tongue rod and the outer periphery of the fan wheel, and the tongue rod can move relative to the fan frame to adjust the size of the air inlet channel in the radial direction of the fan wheel. The size of the air inlet channel between the tongue rod and the fan wheel is adjusted to improve the noise generated when the heat dissipation fan operates.
Description
Technical Field
The invention belongs to the technical field of radiators, and particularly relates to a radiating fan and electronic equipment.
Background
Generally, electronic devices such as notebook computers are provided with heat dissipation fans inside, and the thinner the structure of the electronic devices is, the less easy the heat dissipation is. Therefore, the heat dissipation fan must exert the greatest effect in the limited space inside the electronic device.
The heat dissipation fan in general electronic equipment is centrifugal fan, this kind of heat dissipation fan generally includes the fan frame and sets up the fan wheel in the fan frame, air outlet department is equipped with the tongue on the fan frame, when the heat dissipation fan is discharged from the air outlet there is regional back flow to the fan frame between tongue and the fan wheel again, the regional size between tongue and the fan wheel can influence the quality of noise, and then influence the flow of fan, and the tongue is fixed generally, when the fan wheel rotational speed is great, the noise that the region between air current through tongue and the fan wheel produced is just big more.
Disclosure of Invention
In view of the foregoing problems of the prior art, an object of an embodiment of the present invention is to provide a heat dissipation fan and an electronic device capable of improving noise.
The technical scheme adopted by the embodiment of the invention is as follows:
a heat dissipating fan, comprising:
the fan frame is internally provided with a heat dissipation cavity, and an air inlet and an air outlet which are communicated with the heat dissipation cavity are arranged on the fan frame;
the fan wheel is rotatably arranged in the heat dissipation cavity, an air flow channel is defined between the outer periphery of the fan wheel and the cavity wall of the heat dissipation cavity, the air flow channel is at least divided into a rotary acceleration area and a advection area along the air flow direction, and the advection area is communicated with the air outlet;
the tongue rod is arranged in the heat dissipation cavity and is close to the air outlet, an air inlet channel which is communicated with the air outlet and the rotary acceleration area is defined between the tongue rod and the outer periphery of the fan wheel, and the tongue rod can move relative to the fan frame to adjust the size of the air inlet channel in the radial direction of the fan wheel.
Further, the tongue includes first pole section and the second pole section of buckling formation, first pole section is followed the circumference direction of fan wheel extends, first pole section with inject between the outer periphery of fan wheel the air inlet passageway, the second pole section is located first pole section deviate from the one side of fan wheel, just the free end of second pole section is close to the lateral wall of fan frame.
Further, the first rod section is rotatably connected with the fan frame so that the tongue rod can rotate relative to the fan frame, and when the tongue rod rotates along a first direction, the first rod section can be close to the outer periphery of the fan wheel so as to reduce the size of the air inlet channel in the radial direction of the fan wheel; the tongue is rotatable in a second direction opposite the first direction, the first bar section being capable of being moved away from the outer periphery of the impeller to increase the size of the air intake passage in the radial direction of the impeller.
Further, a rotating shaft is arranged in the side wall of the fan frame, the axis of the rotating shaft is parallel to the axis of the fan wheel, the free end of the first rod section is provided with a sleeve part, and the sleeve part is sleeved on the rotating shaft, so that the tongue rod can rotate around the axis of the rotating shaft.
Further, the heat dissipation fan further comprises a driving assembly, the driving assembly comprises a circuit board assembly and a magnet assembly, the magnet assembly is fixed on the tongue rod, the circuit board assembly is fixed on the fan frame, the circuit board assembly comprises a coil and a circuit board electrically connected with the coil, and when the coil is powered on, the coil can generate attractive force with the magnet so that the tongue rod rotates along a second direction or generate repulsive force with the magnet so that the tongue rod rotates along a first direction.
Further, the driving components are two groups, a first group of driving components in the two groups of driving components are arranged corresponding to the first rod section, and a second group of driving components in the two groups of driving components are arranged corresponding to the second rod section.
Further, the first group of driving components are positioned on one side of the first rod section, which is away from the fan wheel, and the circuit board components in the first group of driving components are fixed on the bottom wall of the fan frame; the circuit board components in the second group of driving components are fixed on the side wall of the fan frame, and the magnet components in the second group of driving components are fixed at the free end of the second rod section.
Further, a plurality of convex locating parts are arranged on the bottom wall of the fan frame, a plurality of locating parts are arranged at intervals, each locating part can respectively move up and down relative to the fan frame, and after each tongue rod rotates for a preset angle along the first direction, the second rod section can be respectively clamped between two adjacent locating parts.
Further, the bottom wall of the fan frame is provided with a plurality of positioning holes corresponding to the positioning parts one by one, the bottom of the fan frame is provided with a plurality of flexible positioning rods, first ends of the flexible positioning rods are fixed on the fan frame, and second ends of the flexible positioning rods are provided with positioning balls, and the positioning balls penetrate through the positioning holes so that parts of the positioning balls extend into the heat dissipation cavities to form the positioning parts.
An electronic device comprising a heat dissipating fan as defined in any one of the preceding claims.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
according to the embodiment of the invention, the tongue rod is arranged at the air outlet of the fan frame, the air inlet channel is defined between the tongue rod and the outer periphery of the fan wheel, and the tongue rod can move relative to the fan frame, so that the size of the air inlet channel in the radial direction of the fan wheel can be adjusted according to the rotating speed of the fan wheel, and the noise of the heat dissipation fan is further improved.
Drawings
In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The accompanying drawings illustrate various embodiments by way of example in general and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive of the present apparatus or method.
FIG. 1 is a schematic diagram of a heat dissipating fan according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a partial structure of a heat dissipating fan according to an embodiment of the present invention;
FIG. 3 is a schematic view of a fan frame with a top wall removed;
FIG. 4 is a schematic view of a tongue bar according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a flexible positioning rod according to an embodiment of the present invention.
In the figure: 1-a fan frame; 10-an air outlet; 11-a spin-up zone; 12-advection area; 13-an air inlet channel; 14-an air inlet; 15-rotating shaft; 16-positioning holes; 2-fan wheel; 3-tongue bar; 31-a first stem; 32-a second stem; 33-magnet slots; 34-a sleeve portion; 4-a circuit board assembly; a 5-magnet assembly; 6-a flexible positioning rod; 60-rod body; 61-positioning ball.
Detailed Description
In order to keep the following description of the embodiments of the present invention clear and concise, the detailed description of known functions and known components thereof have been omitted.
The embodiment of the invention provides a heat dissipation fan which can be used in electronic equipment to dissipate heat of the electronic equipment. As shown in fig. 1, the heat dissipation fan comprises a fan frame 1, a fan wheel 2 and a tongue 3.
The fan frame 1 is internally provided with a heat dissipation cavity, and the fan frame 1 is provided with an air inlet 14 and an air outlet 10 which are communicated with the heat dissipation cavity.
The fan wheel 2 is rotatably arranged in the heat dissipation cavity, an air flow channel is defined between the outer periphery of the fan wheel 2 and the cavity wall of the heat dissipation cavity, the air flow channel is at least divided into a rotary acceleration area 11 and a advection area 12 along the air flow direction, and the advection area 12 is communicated with the air outlet 10. Wherein the flow velocity of the air stream in the spin-up zone 11 is greater than the flow velocity of the air stream in the advection zone 12.
The tongue rod 3 is arranged in the heat dissipation cavity and is close to the air outlet 10, and an air inlet channel 13 which is communicated with the air outlet 10 and the rotary acceleration area 11 is defined between the tongue rod 3 and the outer periphery of the fan wheel 2. When the fan wheel 2 rotates, external air enters the air flow channel through the air inlet 14 on the fan frame 1 and sequentially flows through the rotary acceleration region 11 and the advection region 12, and finally is discharged through the air outlet 10 to be blown onto the heat dissipation fins (not shown in the figure) on the heat dissipation fan. Some of the hot air discharged through the air outlet 10 flows back into the air flow channel through the air inlet channel 13, and then is discharged through the rotary accelerating area 11 and the advection area 12.
The tongue 3 of this embodiment is movable relative to the fan frame 1 to adjust the size of the air intake duct 13 in the radial direction of the fan wheel. For the convenience of description herein, the dimension of the air intake passage 13 in the radial direction of the sector wheel 2 is defined herein as the width of the air intake passage 13.
The heat dissipation fan provided in this embodiment sets up tongue 3 in the air outlet 10 department of fan frame 1, and tongue 3 and the outer periphery of fan wheel 2 define air inlet channel 13 between, and tongue 3 can be relative fan frame 1 motion, can adjust the width of air inlet channel 13 according to the rotational speed of fan wheel 2 like this, and then improves the noise of heat dissipation fan. For example, when the rotation speed of the fan wheel 2 is too high, the larger the air volume generated by the fan wheel 2, the width of the air inlet channel 13 can be increased, so as to ensure that hot air can smoothly pass through the air inlet channel 13.
As shown in fig. 3, the fan frame 1 of the present embodiment is a frame structure surrounded by an annular side wall, a bottom wall and a top wall, the air inlets 14 on the fan frame 1 can be respectively disposed on the top wall and the bottom wall of the fan frame 1, and the air outlets 10 can be disposed on the annular side wall of the fan frame 1, and the annular side wall, the bottom wall and the top wall enclose a heat dissipation cavity.
As shown in fig. 1 and 4, in some embodiments, tongue 3 includes a first pole segment 31 and a second pole segment 32. The first rod section 31 is arc-shaped and extends along the circumferential direction of the fan wheel 2, an air inlet channel 13 is defined between the first rod section 31 and the outer periphery of the fan wheel 2, and the width of the air inlet channel 13 is sequentially increased along the flowing direction of the air flow so as to ensure the smoothness of the air flow.
The second bar segment 32 is located on the side of the first bar segment 31 facing away from the sector wheel 2 and the free end of the second bar segment 32 is brought close to the side wall of the sector 1. The entry of hot air between the first pole section 31 and the side wall of the heat dissipation chamber can be avoided by the second pole section 32. As to the specific shape of the second pole segment 32, embodiments of the present invention are not limited.
Preferably, the first rod segment 31 and the second rod segment 32 of the present embodiment may be integrally formed or the first rod segment 31 and the second rod segment 32 may be formed by bending one rod body 60, thereby facilitating the processing of the tongue 3.
To facilitate adjusting the width of the air intake channel 13, as shown in fig. 1, in some embodiments the first bar segment 31 is rotatably connected to the fan frame 1. When the tongue 3 is rotated in a first direction, i.e. counter-clockwise in fig. 1, the first rod segment 31 can gradually approach the outer periphery of the fan wheel 2, thereby reducing the width of the air inlet channel 13.
When the tongue 3 is rotated in a second direction opposite to the first direction, i.e. clockwise in fig. 1, the first bar segment 31 can gradually move away from the outer periphery of the fan wheel 2, thereby increasing the width of the air inlet channel 13. Thus, when the rotation speed of the fan wheel 2 is increased to increase the air quantity of the air outlet 10, the tongue rod 3 can be controlled to rotate clockwise, so that the air quantity of the air inlet channel 13 is increased, and the noise is reduced.
Further, as shown in fig. 3 and 4, in some embodiments, the fan frame 1 is provided with a rotating shaft 15, and an axis of the rotating shaft 15 is parallel to an axis of the fan wheel 2. The free end of the first rod segment 31 is provided with a sleeve portion 34, the sleeve portion 34 is sleeved on the rotating shaft 15 on the fan frame 1, and the tongue 3 can rotate around the axis of the rotating shaft 15 to be close to the outer periphery of the fan wheel 2 or far away from the outer periphery of the fan wheel 2.
Preferably, the rotating shaft 15 of the present embodiment is disposed in the side wall of the fan frame 1, when the sleeve portion 34 of the first rod segment 31 is sleeved on the rotating shaft 15, the first rod segment 31 can be engaged with the side wall of the fan frame 1, so as to guide the flow of hot air more, and avoid the hot air flowing into the air outlet 10 again from the gap between the first rod segment 31 and the side wall of the fan frame 1.
At the same time, to avoid that the first lever segment 31 contacts the outer periphery of the fan wheel 2 when the tongue 3 rotates in the counter-clockwise direction, the air inlet channel 13 is closed. In some embodiments, a limit (not shown) may be provided in the heat dissipation chamber, and may contact the limit when the tongue 3 rotates in the counterclockwise direction to come into contact with the fan wheel 2.
As shown in fig. 1 and 2, in some embodiments, the heat dissipating fan further includes a driving assembly for controlling the rotation of the tongue 3, the driving assembly including a circuit board assembly 4 and a magnet assembly 5. The magnet assembly 5 is fixed on the tongue 3, the circuit board assembly 4 is fixed on the fan frame 1, the circuit board assembly 4 comprises a coil and a circuit board electrically connected with the coil, and the circuit board supplies current for the coil.
The coil of this embodiment is capable of generating an attractive force with the magnet assembly 5 to rotate the tongue 3 in a clockwise direction or a repulsive force to rotate the tongue 3 in a counterclockwise direction when energized. Specifically, it is possible to control whether an attractive force or a repulsive force is generated with the magnet by the direction of the current in the coil. As for the magnitude of the attractive force or repulsive force, it can be determined by controlling the magnitude of the current in the coil. For example, the greater the current, the greater the attractive or repulsive force. The tongue rod 3 is controlled to rotate through the cooperation of the circuit board assembly 4 and the magnet assembly 5, so that not only is the transmission stable, but also a mechanical transmission structure is not required, and the space in the heat dissipation cavity is saved.
Preferably, the circuit board in the circuit board assembly 4 of the present embodiment may be electrically connected to a controller in an electronic device in which the heat dissipation fan is installed, and meanwhile, the controller is electrically connected to the fan wheel 2, and the controller may further control the magnitude of the current in the coil through the circuit board according to the rotation speed of the fan wheel 2, so as to adjust the width of the air inlet channel 13.
As shown in fig. 2, in some embodiments, the drive assemblies are divided into at least two groups, wherein a first group of the two groups of drive assemblies is disposed corresponding to the first pole segment 31, i.e., the magnet assemblies 5 in the first group of drive assemblies are fixed to the first pole segment 31; the second of the two sets of drive assemblies is arranged in correspondence with the second pole segment 32, i.e. the magnet assemblies 5 of the second set of drive assemblies are fixed to the second pole segment 32. The first pole segment 31 and the second pole segment 32 are each provided with a magnet slot 33 for receiving the magnet assembly 5.
By providing each rod segment with a corresponding drive assembly, sufficient drive force is provided for driving the rotation of the tongue 3.
As further shown in fig. 2, in some embodiments, the first set of drive assemblies is located on a side of the first shaft segment 31 facing away from the fan wheel 2, and the circuit board assemblies 4 of the first set of drive assemblies are secured to the bottom wall of the fan frame 1. The circuit board assemblies 4 of the second set of drive assemblies are fixed to the side walls of the fan frame 1 and the magnet assemblies 5 of the second set of drive assemblies are fixed to the free ends of the second pole segments 32.
As shown in fig. 1, in some embodiments, a plurality of protruding positioning portions are provided on the bottom wall of the heat dissipation chamber. The plurality of positioning parts are arranged at intervals. Each positioning part can move up and down relative to the fan frame 1 respectively. After each rotation of the tongue 3 in the counterclockwise direction by a predetermined angle, the second pole segment 32 can be respectively clamped between two adjacent positioning portions. Wherein the preset angle may be determined according to a specific case. Therefore, when the circuit board assembly 4 fails or fails, the tongue rod 3 can be stabilized through the two adjacent positioning parts, and the tongue rod 3 can be prevented from swinging back and forth under the action of air flow generated during the flow of hot air.
The specific positions of the plurality of positioning portions in the present embodiment are not particularly limited in the present invention. For example, the plurality of positioning portions may be sequentially spaced apart in the direction in which the tongue 3 rotates. At the same time, the first lever section 31 of the tongue 3 can also be clamped between two adjacent positioning parts during rotation.
As shown in fig. 3, in some embodiments, positioning holes 16 corresponding to the positioning portions are provided on the bottom wall of the fan frame 1. Each positioning portion passes through the corresponding positioning hole 16 and protrudes from the bottom wall of the heat dissipation cavity.
Further, as shown in fig. 5, the bottom of the fan frame 1 is provided with a plurality of flexible positioning rods 6, each flexible positioning rod 6 includes a rod body 60 and a positioning ball 61, the positioning ball 61 is disposed at a first end of the rod body 60, a second end of the rod body 60 can be fixed on the fan frame 1, and at least a portion of the positioning ball 61 on each rod body 60 protrudes from a bottom wall of the heat dissipation cavity through a corresponding positioning hole 16 to form a positioning portion. When the tongue 3 rotates in the counterclockwise direction, the positioning balls 61 can be respectively touched in sequence and a downward acting force is exerted on the positioning balls 61, the rod body 60 can be deformed downwards under the acting force, so that the tongue 3 can be conveniently crossed, and when the tongue 3 respectively crosses each positioning ball 61, the rod body 60 can recover deformation so that the positioning balls 61 are protruded out of the bottom wall of the heat dissipation cavity again, and the tongue 3 can be conveniently and automatically stabilized.
The embodiment of the invention also provides electronic equipment which comprises the radiating fan according to any one of the embodiments, and the electronic equipment can be a notebook computer and other equipment.
The above description is intended to be illustrative and not limiting, and variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art within the scope of the present disclosure. Also, the above examples (or one or more aspects thereof) may be used in combination with each other, and it is contemplated that the embodiments may be combined with each other in various combinations or permutations.
Claims (10)
1. A heat dissipation fan, comprising:
the fan frame is internally provided with a heat dissipation cavity, and an air inlet and an air outlet which are communicated with the heat dissipation cavity are arranged on the fan frame;
the fan wheel is rotatably arranged in the heat dissipation cavity, an air flow channel is defined between the outer periphery of the fan wheel and the cavity wall of the heat dissipation cavity, the air flow channel is at least divided into a rotary acceleration area and a advection area along the air flow direction, and the advection area is communicated with the air outlet;
the tongue rod is arranged in the heat dissipation cavity and is close to the air outlet, an air inlet channel which is communicated with the air outlet and the rotary acceleration area is defined between the tongue rod and the outer periphery of the fan wheel, and the tongue rod can move relative to the fan frame to adjust the size of the air inlet channel in the radial direction of the fan wheel.
2. The heat dissipating fan of claim 1, wherein said tongue comprises a first and a second bent bar section, said first bar section extending in a circumferential direction of said fan wheel, said first bar section and an outer periphery of said fan wheel defining said air inlet channel therebetween, said second bar section being located on a side of said first bar section facing away from said fan wheel, and a free end of said second bar section being located adjacent a side wall of said fan frame.
3. The heat dissipating fan of claim 2, wherein said first lever segment is rotatably connected to said fan frame such that said tongue is rotatable relative to said fan frame, said first lever segment being capable of approaching an outer periphery of said fan wheel to reduce a dimension of said air intake passage in a radial direction of said fan wheel when said tongue is rotated in a first direction; the tongue is rotatable in a second direction opposite the first direction, the first bar section being capable of being moved away from the outer periphery of the impeller to increase the size of the air intake passage in the radial direction of the impeller.
4. A heat dissipating fan according to claim 3, wherein a shaft is provided in a side wall of the fan frame, an axis of the shaft is parallel to an axis of the fan wheel, and a free end of the first rod section is provided with a sleeve portion, and the sleeve portion is sleeved on the shaft, so that the tongue can rotate around the axis of the shaft.
5. The heat dissipating fan of claim 2, further comprising a drive assembly comprising a circuit board assembly and a magnet assembly, said magnet assembly being secured to said tongue, said circuit board assembly being secured to said fan frame, said circuit board assembly comprising a coil and a circuit board electrically connected to said coil, said coil being capable of generating an attractive force with said magnet to rotate said tongue in a second direction or a repulsive force with said magnet to rotate said tongue in a first direction when energized.
6. The heat dissipating fan of claim 5, wherein said driving assemblies are two sets, a first set of said driving assemblies of two sets being disposed corresponding to said first pole segment, and a second set of said driving assemblies of two sets being disposed corresponding to said second pole segment.
7. The heat dissipating fan of claim 6, wherein said first set of drive assemblies is located on a side of said first pole segment facing away from said fan wheel, and wherein circuit board assemblies of said first set of drive assemblies are secured to a bottom wall of said fan frame; the circuit board components in the second group of driving components are fixed on the side wall of the fan frame, and the magnet components in the second group of driving components are fixed at the free end of the second rod section.
8. A heat dissipating fan according to claim 3, wherein a plurality of protruding positioning portions are provided on the bottom wall of the fan frame, a plurality of positioning portions are provided at intervals, each positioning portion is capable of moving up and down relative to the fan frame, and the second rod section is capable of being clamped between two adjacent positioning portions after each rotation of the tongue rod along the first direction by a predetermined angle.
9. The heat dissipating fan of claim 8, wherein the bottom wall of the fan frame has positioning holes corresponding to the positioning portions one to one, the bottom of the fan frame has a plurality of flexible positioning rods, the first ends of the flexible positioning rods are fixed on the fan frame, and the second ends of the flexible positioning rods have positioning balls, and the positioning balls are inserted into the positioning holes so that part of the positioning balls extend into the heat dissipating cavity to form the positioning portions.
10. An electronic device comprising a heat dissipating fan according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311675772.0A CN117365982B (en) | 2023-12-08 | 2023-12-08 | Heat dissipation fan and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311675772.0A CN117365982B (en) | 2023-12-08 | 2023-12-08 | Heat dissipation fan and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
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| CN117365982A true CN117365982A (en) | 2024-01-09 |
| CN117365982B CN117365982B (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311675772.0A Active CN117365982B (en) | 2023-12-08 | 2023-12-08 | Heat dissipation fan and electronic equipment |
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| Country | Link |
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| CN (1) | CN117365982B (en) |
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| JP2018084150A (en) * | 2016-11-21 | 2018-05-31 | 東芝ライフスタイル株式会社 | Electric blower, vacuum cleaner and manufacturing method of electric blower |
| JP2021134671A (en) * | 2020-02-25 | 2021-09-13 | 三菱重工業株式会社 | Centrifugal rotary machine |
| CN113915146A (en) * | 2020-07-07 | 2022-01-11 | 华为技术有限公司 | Centrifugal fan and electronic equipment |
| CN114198321A (en) * | 2021-12-03 | 2022-03-18 | 合肥联宝信息技术有限公司 | Centrifugal fan with self-adaptive flow channel |
| CN115175524A (en) * | 2022-07-05 | 2022-10-11 | 展讯通信（上海）有限公司 | Heat dissipation device and electronic equipment |
| CN115653911A (en) * | 2022-11-02 | 2023-01-31 | 孙良 | Dry-type transformer and power equipment |
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| CN101649842A (en) * | 2008-08-15 | 2010-02-17 | 仁宝电脑工业股份有限公司 | Fan assembly |
| CN103321962A (en) * | 2012-03-19 | 2013-09-25 | 纬创资通股份有限公司 | Centrifugal fan and electronic device comprising same |
| CN105204596A (en) * | 2015-09-29 | 2015-12-30 | 联想(北京)有限公司 | Fan and electronic equipment |
| US20170089361A1 (en) * | 2015-09-29 | 2017-03-30 | Beijing Lenovo Software Ltd. | Fan and Electronic Device |
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| CN113915146A (en) * | 2020-07-07 | 2022-01-11 | 华为技术有限公司 | Centrifugal fan and electronic equipment |
| CN114198321A (en) * | 2021-12-03 | 2022-03-18 | 合肥联宝信息技术有限公司 | Centrifugal fan with self-adaptive flow channel |
| CN115175524A (en) * | 2022-07-05 | 2022-10-11 | 展讯通信（上海）有限公司 | Heat dissipation device and electronic equipment |
| CN115653911A (en) * | 2022-11-02 | 2023-01-31 | 孙良 | Dry-type transformer and power equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117365982B (en) | 2024-04-02 |
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