Air cooling fan applied to ultrathin low-noise notebook computer

Abstract

The invention provides an air cooling fan applied to an ultrathin low-noise notebook computer. The air cooling fan comprises a shell with an exhaust outlet, a fan motor is arranged in the shell, a blade assembly is installed at the output end of the fan motor, and bionic sawteeth are arranged at the tip of each fan blade in the blade assembly. The bionic sawteeth are arranged at the tips of the fan blades, airflow is optimized, wind resistance is reduced, aerodynamic noise generated by rotation of the fan blades is reduced, and the situation that the use experience of computer operators is affected by too large noise is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation fans, and in particular to an air heat dissipation fan applied to an ultra-thin low-noise notebook computer. Background Art

[0002] In recent years, with the continuous advancement of screen, chip, battery and other technologies, thin and light design is the main development trend of laptops. One of the important issues brought about by this is the thermal management of laptops. In particular, when the CPU performs high-load tasks, if effective heat dissipation cannot be performed, it will cause electronic components to overheat, resulting in increased power consumption, reduced performance, shortened battery life and even life problems.

[0003] Most current notebooks transfer heat from the heating parts through cooling fans combined with copper tubes. The thin and light design of notebooks further compresses the flow space of cooling fans. In order to improve the cooling efficiency under high load, the general strategy is to increase the fan speed to increase the fan flow. Although this approach has certain effects, as the fan speed increases, the aerodynamic noise generated by the rotation of the blades gradually increases, affecting the user experience of computer operators and is not conducive to the high-end development of notebooks. How to reduce fan noise while ensuring the heat dissipation effect has always been a key research direction in related fields. Summary of the invention

[0004] The purpose of the present invention is to provide an air cooling fan applied to an ultra-thin low-noise notebook computer to solve the above technical problems.

[0005] The present invention provides an air cooling fan for an ultra-thin low-noise notebook computer, comprising a shell with an air outlet, a fan motor being arranged in the shell, a blade assembly being installed on the output end of the fan motor, and a bionic sawtooth being arranged at the tip of each fan blade in the blade assembly.

[0006] Furthermore, the blade assembly is coaxially arranged with the fan motor, and the blade assembly is eccentrically arranged with the housing.

[0007] Furthermore, the housing is in a volute shape.

[0008] Furthermore, the housing comprises a top shell and a bottom shell, the fan motor is mounted on the bottom shell, and the top shell is provided with an air inlet corresponding to the blade assembly.

[0009] Furthermore, the top shell and the bottom shell are detachably connected.

[0010] Furthermore, the root of the fan blade is fixedly mounted on the output end of the fan motor.

[0011] Furthermore, the fan blades are of a bent-twisted structure.

[0012] Furthermore, the thickness of the tip portion of the fan blade is smaller than the thickness of the root portion of the fan blade.

[0013] Furthermore, anti-vortex ribs are arranged in the shell.

[0014] Furthermore, the anti-vortex ribs are mounted on the top shell.

[0015] The present invention optimizes airflow, reduces wind resistance, and reduces aerodynamic noise generated by the rotation of the fan blades by arranging bionic sawtooth at the tip of the fan blades, thereby preventing excessive noise from affecting the user experience of computer operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is the internal structure diagram of the present invention;

[0019] Figure 3 It is a top shell structure diagram of the present invention;

[0020] Figure 4 It is a structural diagram of the fan blade of the present invention;

[0021] Figure 5 A top view of a fan blade of the present invention;

[0022] Figure 6 This is a plan view of the fan blade of the present invention;

[0023] Description of reference numerals:

[0024] In the figure: 1-housing, 11-top shell, 12-bottom shell, 13-air inlet, 14-air outlet, 2-fan motor, 3-blade assembly, 31-fan blade, 32-bionic sawtooth, 4-anti-vortex rib; DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example 1

[0029] like Figure 1-Figure 6 As shown:

[0030] An air cooling fan for an ultra-thin low-noise notebook computer comprises a shell 1, the shell 1 is in a volute shape, and an air outlet 14 is arranged on one side edge of the shell 1.

[0031] A fan motor 2 is arranged in the housing 1 , and a blade assembly 3 is mounted on the output end of the fan motor 2 .

[0032] The housing 1 comprises a top housing 11 and a bottom housing 12, and the top housing 11 and the bottom housing 12 are detachably connected. In this embodiment, the top housing 11 and the bottom housing 12 are detachably connected by means of a slot and an insert block.

[0033] The fan motor 2 is mounted on the bottom shell 12 , and an air inlet 13 corresponding to the blade assembly 3 is provided on the top shell 11 .

[0034] The blade assembly 3 is coaxially arranged with the fan motor 2 , and the blade assembly 3 is eccentrically arranged with the housing 1 .

[0035] The blade assembly 3 is composed of 80 fan blades 31 which are evenly arranged circumferentially and equidistantly along the output end of the fan motor 2 .

[0036] The root of the fan blade 31 is fixedly mounted on the output end of the fan motor 2 .

[0037] The fan blade 31 is a bent and twisted structure. The fan blade 31 is formed by bending and twisting the bottom end of a rectangular semi-annular blade upward along its geometric center line, thereby increasing the blade work area without increasing the blade height.

[0038] The twisted fan blades 31 have two advantages: on the one hand, for fan blades 31 with fixed spatial dimensions, the twisted design can reduce the number of blades while ensuring the total working area of ​​the fan blades 31, thereby reducing the mass of the cooling fan. On the other hand, for cooling fans with limited spatial dimensions, the twisted design can reduce the blade height while ensuring the total working area of ​​the fan blades 31, thereby adapting to the spatial height.

[0039] The tip of the fan blade 31 is provided with a bionic sawtooth 32, which improves the heat dissipation efficiency of the heat dissipation fan and effectively reduces the aerodynamic noise of the fan, thereby effectively improving the user experience.

[0040] The thickness of the tip of the fan blade 31 is smaller than the thickness of the root of the fan blade 31 .

[0041] When the cooling fan is actually working, due to the eccentric arrangement of the blade assembly 3 inside the shell 1, the internal flow channel of the shell 1 will produce vortices of varying degrees depending on the fan speed, causing increased resistance to the airflow when flowing inside, affecting the cooling efficiency of the fan.

[0042] In this regard, anti-vortex ribs 4 are provided at the places where the vortex is seriously harmful inside the housing 1, and the anti-vortex ribs 4 are installed on the top shell 11. The anti-vortex ribs 4 can guide the airflow inside the fan, reduce the resistance caused by the local vortex inside the fan, and further increase the flow rate of the cooling fan.

[0043] When working, the computer controller controls the notebook to supply power to the fan and drives the cooling fan to work. The fan blades 31 rotate, sucking in high-temperature air through the air inlet 13, and changing the air inlet flow rate by adjusting the current. The air is discharged through the exhaust port 14 by centrifugal force through the rotation of the fan blades 31. The rotation speed of the blade assembly 3 is controlled by the current. When the CPU and other heat-generating components are running at high load, the current increases, the rotation speed of the cooling fan increases, the overall flow rate of the cooling fan increases, and the cooling efficiency increases.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air cooling fan for ultra-thin low-noise notebook computers, characterized in that The invention comprises a shell with an air outlet, wherein a fan motor is arranged in the shell, a blade assembly is installed on the output end of the fan motor, and a bionic sawtooth is arranged at the tip of each fan blade in the blade assembly.

2. The air cooling fan for ultra-thin low-noise notebook computers according to claim 1 is characterized in that: The blade assembly is coaxially arranged with the fan motor, and the blade assembly is eccentrically arranged with the housing.

3. The air cooling fan for ultra-thin low-noise notebook computers according to claim 1 is characterized in that: The housing is in the shape of a volute.

4. The air cooling fan for ultra-thin low-noise notebook computers according to claim 1, characterized in that: The housing comprises a top shell and a bottom shell, the fan motor is mounted on the bottom shell, and an air inlet corresponding to the blade assembly is provided on the top shell.

5. The air cooling fan for ultra-thin low-noise notebook computers according to claim 4 is characterized in that: The top shell and the bottom shell are detachably connected.

6. The air cooling fan for ultra-thin low-noise notebook computers according to claim 1, characterized in that: The root of the fan blade is fixedly mounted on the output end of the fan motor.

7. The air cooling fan for ultra-thin low-noise notebook computers according to claim 1, characterized in that: The fan blade is a bending and twisting structure.

8. The air cooling fan for ultra-thin low-noise notebook computers according to claim 1, characterized in that: The thickness of the tip portion of the fan blade is less than the thickness of the root portion of the fan blade.

9. The air cooling fan for ultra-thin low-noise notebook computers according to claim 4, characterized in that: Anti-vortex ribs are arranged in the shell.

10. The air cooling fan for ultra-thin low-noise notebook computers according to claim 9, characterized in that: The anti-vortex ribs are mounted on the top shell.

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