Cooling fan and electric equipment

Abstract

The utility model discloses a cooling fan and electric equipment. The cooling fan comprises a support, a fan body and a fan cover, the fan blade is provided with a first side edge and a second side edge which are oppositely arranged, and the first side edge is rotatably connected to the support; the first magnetic part is arranged on the upper surface of the fan blade and is close to the second side edge; the first electromagnetic unit is installed on the support and located above the second side edge; and the main control board is electrically connected with the first electromagnetic unit so as to control the first electromagnetic unit to generate an electromagnetic field opposite to the magnetic field of the first magnetic part at a preset frequency, so that the second side edge moves up and down at the preset frequency. When the cooling fan works, only one fan blade is needed to swing up and down and does not need to rotate, so that the number of the fan blades can be reduced, the space occupied by the fan blades during working can be reduced, the size of the cooling fan is smaller, and equipment applied to the cooling fan is light and thin.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat dissipation fan technical field, especially a heat dissipation fan and electric equipment. BACKGROUND

[0002] Many components in electronic packaging such as CPU, GPU and LED lamp etc. dissipate a large amount of heat during operation, which can cause the temperature of the packaging to rise, which can have a negative impact on the packaging in user experience, performance and reliability. In the related art, a rotating fan is usually used to blow air on the high-temperature area to achieve the purpose of cooling, but the rotating fan occupies more space when the fan blade rotates, which is not conducive to the thinning of the applied device. SUMMARY

[0003] The main purpose of the utility model is to provide a heat dissipation fan, which aims to solve the technical problem of reducing the space occupied by the heat dissipation fan in the applied device.

[0004] To achieve the above purpose, the heat dissipation fan provided by the utility model comprises:

[0005] a support;

[0006] a fan blade, the fan blade has a first side and a second side arranged opposite to each other, and the first side is rotatably connected to the support;

[0007] a first magnetic part, the first magnetic part is arranged on the upper surface of the fan blade and close to the second side;

[0008] a first electromagnetic unit, the first electromagnetic unit is installed on the support and above the second side;

[0009] a main control board, the main control board is electrically connected with the first electromagnetic unit to control the first electromagnetic unit to generate an electromagnetic field opposite to the magnetic field of the first magnetic part at a preset frequency, so that the second side moves up and down at the preset frequency.

[0010] Optionally, the number of the first magnetic parts is multiple, and the multiple first magnetic parts are arranged along the length direction of the second side, and the first electromagnetic unit extends along the length direction of the second side.

[0011] Optionally, the support comprises a bottom plate, a top plate and two support plates, the two support plates are connected to both ends of the bottom plate and support the top plate, the heat dissipation fan further comprises a rotating shaft, both ends of the rotating shaft are rotatably connected to the two support plates respectively, the first side is connected to the rotating shaft, and the first electromagnetic unit is installed on the top plate.

[0012] Optionally, the heat dissipation fan further comprises a second magnetic member and a second electromagnetic unit, the second magnetic member is installed on the lower surface of the fan blade and close to the second side edge, the second electromagnetic unit is installed on the support and below the second side edge, the main control board is electrically connected with the second electromagnetic unit, so as to control the second electromagnetic unit to generate an electromagnetic field opposite to the magnetic field of the second magnetic member when the heat dissipation fan is in standby state, so that the second electromagnetic unit attracts and fixes the second magnetic member.

[0013] Optionally, the main control board is further used to control the second electromagnetic unit to generate an electromagnetic field in the same direction as the magnetic field of the second magnetic member when the heat dissipation fan is working, so as to generate a repulsive force between the second electromagnetic unit and the second magnetic member.

[0014] Optionally, the number of the second magnetic members is multiple, and the multiple second magnetic members are arranged along the length direction of the second side edge, and the second electromagnetic unit extends along the length direction of the second side edge.

[0015] Optionally, the thickness of the fan blade is 0.8mm to 1.5mm.

[0016] Optionally, the fan blade is a carbon fiber fan blade.

[0017] Optionally, the main control board is installed on one of the support plates away from the fan blade.

[0018] The utility model further provides an electric equipment, including the heat dissipation fan as described above, the heat dissipation fan is used to heat dissipation for the heating part of the electric equipment.

[0019] In the technical scheme of the heat dissipation fan, the fan blade can swing up and down as a whole with the first side edge as the axis, the main control board can control the first electromagnetic unit to generate an electromagnetic field, thereby driving the fan blade to swing up by generating an adsorption force on the first magnetic member, after the fan blade swings up, the main control board can control the first electromagnetic unit to be powered off to remove the adsorption force on the first magnetic member, thereby making the fan blade swing down under the action of gravity, the up and down swinging of the fan blade can generate airflow, by adjusting the power-on time and power-off time of the main control board on the first electromagnetic unit, the fan blade can swing up and down at a preset frequency, thereby making the heat dissipation fan generate stable airflow. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only show some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0021] Fig. 1 Structure diagram of an embodiment of the heat dissipation fan of the present application;

[0022] Fig. 2 Structure sectional view of an embodiment of the heat dissipation fan of the present application;

[0023] Fig. 3 Structure explosion diagram of an embodiment of the heat dissipation fan of the present application.

[0024] Explanation of reference numerals:

[0025]

[0026] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0030] Many components in electronic packaging, such as CPU, GPU and LED lamp, dissipate a large amount of heat during operation, which can cause the temperature of the packaging to rise, which can have a negative impact on the user experience, performance and reliability of the packaging. In the related art, rotating fans are usually used to blow air to high-temperature areas to achieve cooling, but the rotating fan occupies more space when the blades rotate, which is not conducive to the thinness of the applied device.

[0031] The utility model provides a radiating fan, aim at solving how to reduce the technical problem that radiating fan occupies space in the device applied.

[0032] In the embodiments of the present application, as shown in Figs. 1 to 3 The radiating fan comprises a support 10, a blade 20, the blade 20 has a first side edge 21 and a second side edge 22 arranged oppositely, the first side edge 21 is rotatably connected to the support 10, a first magnetic member 30 is arranged on the upper surface of the blade 20 and close to the second side edge 22, a first electromagnetic unit 40 is installed on the support 10 and located above the second side edge 22, a main control board 50 is electrically connected with the first electromagnetic unit 40 to control the first electromagnetic unit 40 to generate an electromagnetic field opposite to the magnetic field of the first magnetic member 30 at a preset frequency, so that the second side edge 22 moves up and down at the preset frequency.

[0033] In the embodiment, the specific form of the support 10 is not limited, and it only needs to meet the installation of the fan blade 20, the first magnetic member 30, the first electromagnetic unit 40 and the main control board 50. The fan blade 20 can be in the form of a rectangular sheet, the first side edge 21 and the second side edge 22 are two opposite long side edges of the fan blade 20, and the second side edge 22 can move up and down relative to the first side edge 21, that is, the fan blade 20 can swing up and down around the first side edge 21. The first magnetic member 30 can be a magnet, and the first electromagnetic unit 40 can be an electromagnet. The first electromagnetic unit 40 is located above the first magnetic member 30, and the main control board 50 can control the power-on or power-off of the first electromagnetic unit 40. When the main control board 50 controls the power-on of the first electromagnetic unit 40, the first electromagnetic unit 40 can generate an electromagnetic field, which is opposite to the magnetic field of the first magnetic member 30, so that the suction force can be generated between the first electromagnetic unit 40 and the first magnetic member 30. Since the first electromagnetic unit 40 is fixed on the support 10, and the first magnetic member 30 is fixed on the movable second side edge 22, the second side edge 22 of the fan blade 20 will move upward under the action of the suction force, thereby driving the entire fan blade 20 to swing upward.

[0034] It can be understood that by controlling the power-on time of the first electromagnetic unit 40, the upward movement time of the second side edge 22 can be controlled, thereby the upswing height of the fan blade 20 can be controlled. After the preset height of the fan blade 20 is upswung, by controlling the power-off of the first electromagnetic unit 40, the electromagnetic field of the first electromagnetic unit 40 disappears, so that the first magnetic member 30 loses the action of magnetic attraction, and the second side edge 22 will drop downward under the action of gravity, thereby making the fan blade 20 swing downward. After the fan blade 20 is swung downward to the preset position, the power-on of the first electromagnetic unit 40 is controlled again, and the fan blade 20 can be upswung again. In this way, by periodically controlling the power-on and power-off of the first electromagnetic unit 40, the fan blade 20 can be repeatedly swung up and down. The up-and-down swinging of the fan blade 20 can generate air flow, and by adjusting the power-on time and power-off time of the first electromagnetic unit 40 by the main control board 50, the fan blade 20 can be swung up and down at a preset frequency, thereby the heat dissipation fan can generate stable air flow. Compared with the prior art, the heat dissipation fan of the utility model only needs one fan blade 20 to swing up and down, without rotating, thereby the number of fan blades 20 can be reduced, and the space occupied by the fan blade 20 during operation can be reduced, so that the heat dissipation fan is more miniaturized, thereby facilitating the thinning of the equipment to which the heat dissipation fan is applied.

[0035] The fan blades 20 can be carbon fiber fan blades 20, which have the advantages of light weight, high folding strength, etc., and can make the fan blades 20 more easily swing under the action of driving force and gravity, so as to improve the effect of the fan blades 20 generating airflow. The thickness of the fan blades 20 can be set to 0.8-1.5 mm, for example, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm or 1.5 mm. In this way, the structural strength and service life of the fan blades 20 can be ensured, and the airflow velocity generated by the swing of the fan blades 20 can be ensured.

[0036] The number of the first magnetic members 30 can be one, two or more.

[0037] Specifically, as shown in Figs. 1 to 3 , the number of the first magnetic members 30 is multiple, the multiple first magnetic members 30 are arranged at intervals along the length direction of the second side edge 22, and the first electromagnetic unit 40 extends along the length direction of the second side edge 22. The first electromagnetic unit 40 can generate magnetic attraction force to the multiple first magnetic members 30 at the same time after being energized, so as to drive the multiple first magnetic members 30 to move upward at different positions of the second side edge 22, so that the first magnetic members 30 can more easily overcome the gravity of the fan blades 20, and the upswing effect of the fan blades 20 is improved.

[0038] In actual application, as shown in Fig. 3 , the support 10 includes a bottom plate 11, a top plate 12 and two support plates 13, the two support plates 13 are connected to the two ends of the bottom plate 11 and support the top plate 12, and the heat dissipation fan further includes a rotating shaft 14, the two ends of the rotating shaft 14 are rotatably connected to the two support plates 13 respectively, the first side edge 21 is connected to the rotating shaft 14, and the first electromagnetic unit 40 is installed on the top plate 12.

[0039] The overcurrent channel with an air inlet and an air outlet is formed between the top plate 12 and the bottom plate 11, the fan blades 20 are installed in the overcurrent channel, the first side edge 21 is close to the air inlet, the second side edge 22 is close to the air outlet, and the airflow at the air inlet can be driven to flow to the air outlet when the fan blades 20 swing, so that the airflow of the heat dissipation fan can be improved. The rotating shaft 14 can improve the connection strength between the fan blades 20 and the support 10, so as to improve the installation stability of the fan blades 20. The main control board 50 is installed on the side of one of the support plates 13 away from the fan blades 20, so that the support plate 13 can be fully utilized, and the swing track of the fan blades 20 can be avoided from being affected by the main control board 50.

[0040] When the fan is in standby state, i.e. the fan blades 20 do not need to swing, the second side edge 22 can naturally droop or lap on the bottom plate 11 under the action of gravity, or can be fixed by other ways.

[0041] Exemplarily, as shown in Fig. 2 andFig. 3 As shown, the heat dissipation fan further comprises a second magnetic member 60 and a second electromagnetic unit 70, the second magnetic member 60 is installed on the lower surface of the fan blade 20 and close to the second side edge 22, the second electromagnetic unit 70 is installed on the support 10 and below the second side edge 22, the main control board 50 is electrically connected with the second electromagnetic unit 70, so as to control the second electromagnetic unit 70 to generate an electromagnetic field opposite to the magnetic field of the second magnetic member 60 when the heat dissipation fan is standby, so as to make the second electromagnetic unit 70 attract and fix the second magnetic member 60.

[0042] The second magnetic member 60 can be a magnet, and the second electromagnetic unit 70 can be an electromagnet. When the fan blade 20 does not need to swing, the second magnetic member 60 is overlapped on the second electromagnetic unit 70, the first electromagnetic unit 40 is kept off, at this time, the main control board 50 controls the second electromagnetic unit 70 to be powered on to generate an electromagnetic field, which is opposite to the magnetic field of the second magnetic member 60, so that the second electromagnetic unit 70 and the second magnetic member 60 can generate an attractive force, so as to attract and fix the second side edge 22 on the bottom plate 11, so as to ensure that the fan blade 20 is fixed when the fan is standby, prevent the fan blade 20 from swinging randomly to generate noise under the influence of the outside world, and improve the use effect of the fan.

[0043] It can be understood that when the heat dissipation fan works, the main control board 50 can control the second electromagnetic unit 70 to be powered off, so that the magnetic attraction force between the second electromagnetic unit 70 and the second magnetic member 60 disappears, so as to unlock the second side edge 22, so that the fan blade 20 can swing freely.

[0044] Specifically, the main control board is further used to control the second electromagnetic unit 70 to generate an electromagnetic field in the same direction as the magnetic field of the second magnetic member 60 when the heat dissipation fan works, so as to generate a repulsive force between the second electromagnetic unit 70 and the second magnetic member 60. When the heat dissipation fan works, the main control board 50 controls the first electromagnetic unit 40 to be powered off after the fan blade 20 swings to a preset height, at this time, the fan blade 20 swings down under the action of gravity, and under the action of inertia, the second magnetic member 60 on the second side edge 22 will approach and eventually collide with the second electromagnetic unit 70. In this process, since the electromagnetic field generated by the second electromagnetic unit 70 is in the same direction as the magnetic field of the second magnetic member 60, a repulsive force is generated between the second electromagnetic unit 70 and the second magnetic member 60, which reduces the speed of the second side edge 22 moving towards the second electromagnetic unit 70, so that the closer the second side edge 22 is to the second electromagnetic unit 70, the smaller the speed is. In this way, the kinetic energy of the second magnetic member 60 when contacting the second electromagnetic unit 70 can be reduced, so as to reduce the noise generated by the second magnetic member 60 contacting the second electromagnetic unit 70, that is, to reduce the noise generated by the heat dissipation fan when working, and to improve the use effect of the heat dissipation fan.

[0045] The number of the second magnetic members 60 can be one, two or more.

[0046] In practical application, as shown in Fig. 3 The number of the second magnetic members 60 is multiple, and the multiple second magnetic members 60 are arranged along the length direction of the second side edge 22, and the second electromagnetic unit 70 extends along the length direction of the second side edge 22. The second electromagnetic unit 70 can generate magnetic attraction force to the multiple second magnetic members 60 at the same time after being powered on, so that the stability of the fan blade 20 can be improved in the standby state of the cooling fan, and the fan blade 20 can be effectively locked.

[0047] The utility model also proposes a kind of electric equipment, and the specific structure of the cooling fan of the electric equipment refers to above-mentioned embodiment, since the electric equipment of the present application has adopted all technical solutions of above-mentioned all embodiments, at least has all beneficial effects brought by the technical scheme of above-mentioned embodiment, here no longer one by one elaboration.

[0048] The above is only optional embodiment of the utility model, and does not limit the patent range of the utility model, and all equivalent structural transformations made by the utility model specification and attached drawing contents under the inventive concept of the utility model, or direct / indirect application in other related technical fields are included in the patent protection range of the utility model.

Claims

1. A heat dissipating fan characterized by, The heat dissipation fan comprises: a support; a fan blade having a first side and a second side arranged oppositely, the first side being rotatably connected to the support; a first magnetic element arranged on an upper surface of the fan blade and close to the second side; a first electromagnetic unit installed on the support and above the second side; a main control board electrically connected to the first electromagnetic unit to control the first electromagnetic unit to generate an electromagnetic field opposite to a magnetic field of the first magnetic element at a preset frequency, so that the second side moves up and down at the preset frequency.

2. The heat dissipating fan as set forth in claim 1, wherein The number of the first magnetic elements is multiple, and the multiple first magnetic elements are arranged along a length direction of the second side.

3. The heat dissipating fan as set forth in claim 1, wherein The support comprises a bottom plate, a top plate and two support plates, the two support plates being connected to two ends of the bottom plate and supporting the top plate, the heat dissipation fan further comprising a rotating shaft, two ends of the rotating shaft being rotatably connected to the two support plates respectively, the first side being connected to the rotating shaft, and the first electromagnetic unit being installed on the top plate.

4. The heat dissipating fan according to any one of claims 1 to 3, wherein The heat dissipation fan further comprises a second magnetic element and a second electromagnetic unit, the second magnetic element being installed on a lower surface of the fan blade and close to the second side, the second electromagnetic unit being installed on the support and below the second side, and the main control board being electrically connected to the second electromagnetic unit to control the second electromagnetic unit to generate an electromagnetic field opposite to a magnetic field of the second magnetic element when the heat dissipation fan is in standby, so that the second electromagnetic unit attracts and fixes the second magnetic element.

5. The heat dissipating fan as set forth in claim 4, wherein The main control board is further used to control the second electromagnetic unit to generate an electromagnetic field in the same direction as the magnetic field of the second magnetic element when the heat dissipation fan is working, so that repulsion is generated between the second electromagnetic unit and the second magnetic element.

6. The heat dissipating fan as set forth in claim 4, wherein The number of the second magnetic elements is multiple, and the multiple second magnetic elements are arranged along the length direction of the second side.

7. The heat dissipating fan according to any one of claims 1 to 3, wherein The thickness of the fan blade is set to 0.8mm to 1.5mm.

8. The heat dissipating fan according to any one of claims 1 to 3, wherein The fan blade is a carbon fiber fan blade.

9. The heat dissipating fan as set forth in claim 3, wherein The main control board is installed on a side of one of the support plates away from the fan blade.

10. An electrical device, characterized by The heat dissipation fan as claimed in any one of claims 1 to 9 is used to dissipate heat from a heat generating part of the electrical equipment.

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