Air supply mechanism and radiator

Abstract

The present invention discloses an air supply mechanism, including a base plate and a swing piece, wherein a first limiting gap and a second limiting gap are provided on the base plate, a first action portion is provided at the center of the swing piece, and a second action portion is provided outside the swing piece, the swing piece vertically passes through the first limiting gap and the second limiting gap, and the first action portion is located between the first limiting gap and the second limiting gap, and the first action portion and the second action portion can bend and swing when the first action portion and the second action portion alternately attract and repel. The swing piece used in the air supply mechanism does not need to be fixed at one end, so it can be free from the tearing force generated by fixing one end, can extend the working life of the swing piece, and can swing at both ends under one driving force, so the air supply efficiency is high and the cost is low.

Description

Technical Field

[0001] The invention relates to an air supply and heat dissipation device, in particular to an air supply mechanism and a radiator. Background Art

[0002] In the heat dissipation of electronic components or other occasions that require heat dissipation and air blowing, air supply mechanisms such as axial flow fans or vortex fans are often used. The fans have problems such as high noise and easy damage to bearings after long-term operation. In order to reduce noise and prevent damage, invention patent application CN104717873A discloses a heat dissipation device, which uses electromagnetic force to attract a movable part to swing to generate airflow and realize air supply. The movable part is in the form of a sheet, with the center fixed on the fulcrum, and magnets are installed at both ends, which can be attracted and repelled by the electromagnetic coil, so as to achieve swinging at both ends. Utility model patent CN205356927U discloses a heat dissipation device and its swinging structure, in which two long blades are fixed at both ends of the base, and an actuating magnetic part is arranged on the long blade, and an electromagnetic coil is arranged between the two blades. The electromagnetic coil attracts and repels the actuating magnetic part to make the blade swing. Invention patent application CN107347242A discloses a heat dissipation device, including a base and a pendulum, one end of the pendulum is fixed to the base, a ring coil is provided on the pendulum, and a first magnet and a second magnet are provided on both sides of the coil. When alternating current is passed through the coil, a changing magnetic force is generated, which interacts with the first magnet and the second magnet to drive the pendulum to swing.

[0003] In the above scheme, one end of the pendulum needs to be fixed on a fulcrum or a base. During the swinging process of the pendulum, the pendulum at the fixed point will be subjected to a large repeated tearing force, which makes the material of the pendulum at the fixed point prone to fatigue and damage, affecting the service life of the pendulum; and for the pendulum with only one end swinging, the air supply efficiency is low, while the pendulum that can swing at both ends needs to be equipped with a driving device for each end, which is more expensive. Summary of the invention

[0004] One of the objects of the present invention is to provide an air supply mechanism, in which the pendulum used does not need to be fixed at one end, thereby being free from the tearing force caused by fixing one end, extending the working life of the pendulum, and being able to swing at both ends under one driving force, so that the air supply efficiency is higher and the cost is lower.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme:

[0006] A wind supply mechanism comprises a base plate and a swing piece, wherein a first limiting gap and a second limiting gap are arranged opposite to each other on the base plate, a first action portion is arranged at the center of the swing piece, and a second action portion is arranged outside the swing piece, the swing piece vertically passes through the first limiting gap and the second limiting gap and the first action portion is located between the first limiting gap and the second limiting gap, and the swing piece can bend and swing when the first action portion and the second action portion alternately act by attraction and repulsion.

[0007] Preferably, the first limiting gap and the second limiting gap are both formed by a lower limiting block, an upper limiting block and limiting blocks on both sides, and the swing piece is located on the lower limiting block and has a gap with the base plate.

[0008] Preferably, the contact parts between the limit blocks on both sides and the swing piece have arc surfaces, and when the swing piece bends and swings, the arc surfaces always remain tangent to the swing piece.

[0009] Preferably, the limit blocks on both sides are two rotatable rollers.

[0010] Preferably, the swing plate has a limiting portion relative to the upper limit block and / or the lower limit block.

[0011] Preferably, a plurality of the swing pieces and the first limiting gap, the second limiting gap and the first action part are arranged at intervals on the substrate, and a plurality of the second action parts are located between two adjacent swing pieces.

[0012] Preferably, the first acting part is a magnet and the second acting part is an electromagnetic coil, or the first acting part is an electromagnetic coil and the second acting part is a magnet, or both the first acting part and the second acting part are electromagnetic coils.

[0013] Preferably, the second acting part is an electromagnetic coil, and the second acting part is isolated from the swing piece and the first limiting gap, the second limiting gap and the first acting part through a protective shell.

[0014] Preferably, the substrate protrudes toward the side where the swing piece is provided and forms a groove on the other side of the substrate, the second acting part is an electromagnetic coil and is located in the groove, and the first acting part is a magnet.

[0015] Preferably, the swing piece increases thickness and width toward both ends to form a fan portion, and a plurality of guide grooves are provided on the fan portion.

[0016] Another object of the present invention is to provide a heat sink to dissipate heat for heat-generating components such as electronic components, specifically using the following scheme:

[0017] A radiator comprises the above-mentioned air supply mechanism and fins, wherein the fins are arranged on a substrate of the air supply mechanism and located on both sides of the swing piece, and a mounting base is provided on the substrate.

[0018] In the above technical solution, the pendulum is arranged between the first limiting gap and the second limiting gap, and the electromagnetic action between the first acting part and the second acting part generates an attraction or repulsion force at the center of the pendulum to make the pendulum swing. The reciprocating swing of the center of the pendulum will cause the two ends to fan, thereby achieving an air supply effect. In the above process, the entire pendulum is free and is not fixed at any point. There is sliding friction or rolling friction between the first limiting gap, the second limiting gap and the pendulum, and it supports the swing of the pendulum. The present invention can realize the swinging and fanning of the two ends of the pendulum by setting a force point on the pendulum, optimizes the swing structure, improves the air supply efficiency, and reduces the cost compared to the need for two driving devices for the swing at both ends. The limiting blocks on both sides of the first limiting gap and the second limiting gap are curved or configured as rollers, which can reduce the friction with the pendulum, reduce the material loss of the pendulum, and also improve the smoothness of the swing of the pendulum. Arranging multiple pendulums side by side and driving each pendulum to swing together through multiple second action parts can effectively improve the air supply capacity and make the air supply structure more flat, so as to meet the needs of flattening in many occasions. The substrate is arranged in the form of a convexity on one side and a corresponding groove on the other side. The second action part and the pendulum can be placed on both sides of the substrate to achieve waterproofing and other effects on the second action part. If the first action part on the pendulum adopts a magnet, the side of the substrate with the pendulum can be directly rinsed with water to achieve the purpose of convenient cleaning. The air supply mechanism of the present invention can be suitable for various air use occasions such as heat dissipation, purification, and drying. The radiator of the present invention can better extend the practical life because it adopts the air supply mechanism with the above-mentioned advantages. The scheme of arranging multiple pendulums side by side can not only improve the heat dissipation speed and effect, but also better meet the flattening design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the air supply mechanism of the present invention;

[0020] Figure 2 It is a schematic diagram of the enlarged structure of the parts related to the swing piece and the second limit gap.

[0021] Figure 3 It is a schematic diagram of the structure of the left limit block, the right limit block, the wheel roller, the fan part and the upper guide groove;

[0022] Figure 4 is a schematic diagram of the radiator structure;

[0023] Figure 5 It is a schematic diagram of the heat sink structure when multiple pendulums are arranged side by side;

[0024] Figure 6 It is a schematic diagram of the structure of protrusions and grooves formed on the substrate;

[0025] Figure 7 It is a schematic diagram of the relationship between the magnetic field poles of the first action part and the second action part when a plurality of pendulum pieces are arranged side by side;

[0026] Figure 8 It is a schematic diagram of a structure with a mounting base on the other side of the substrate. DETAILED DESCRIPTION

[0027] The present invention will be further described below by means of specific embodiments in conjunction with the accompanying drawings:

[0028] like Figures 1 to 8 As shown, the air supply mechanism of the present invention includes a substrate 1 and a swing piece 2, and a first limiting gap 3 and a second limiting gap 4 are arranged on one side of the substrate 1, and the gap openings of the first limiting gap 3 and the second limiting gap 4 are arranged oppositely. The swing piece 2 vertically passes through the first limiting gap 3 and the second limiting gap 4, that is, the direction from the first limiting gap 3 to the second limiting gap 4 is the length direction of the swing piece 2, the up and down direction of the first limiting gap 3 or the second limiting gap 4 is the width direction of the swing piece 2, and the width direction of the first limiting gap 3 or the second limiting gap 4 is the thickness direction of the swing piece 2. A first action part 5 is arranged at the center of the swing piece 2, which is generally a permanent magnet such as a magnet, and an electromagnetic coil can also be arranged. For example, a circular hole is left in the center of the swing piece 2, and a cylindrical iron core passes through the circular hole. The cylindrical iron core is fixedly bonded or welded to the inner wall of the circular hole. The two ends of the cylindrical iron core are exposed at the two sides of the swing piece, and the electromagnetic coil is wound around the two ends of the cylindrical iron core. The first action part 5 is located in the middle of the first limiting gap 3 and the second limiting gap 4.

[0029] In one embodiment of the present invention, the first limit gap 3 and the second limit gap 4 are both formed by an upper limit block 301, a lower limit block 302, and left limit blocks 305 and right limit blocks 306 located on both sides, respectively. The lower limit block 302 lifts the swing piece 2 away from the substrate 1, that is, there is a gap between it and the substrate 1 and it is suspended. In order to reduce the friction on the swing piece, the contact side of the left limit block 305 and the right limit block 306 with the swing piece is set to an arc surface, such as a semicircular surface, so that the swing piece always remains tangent to the semicircular surface, which can reduce sliding friction. Furthermore, the left limit block 305 and the right limit block 306 can be set to a cylindrical roller ( Figure 3 ), the swing piece contacts the roller and slides over the roller surface during the bending and swinging process, and the roller can rotate in coordination to further reduce friction. A lubricating layer can be provided on the arc surface or the roller to further reduce friction.

[0030] In one embodiment, a limiting portion 7 is provided on the upper edge or the lower edge of the swing piece, and the limiting portion is located inside or outside the first limiting gap 3, and inside or outside the second limiting portion, and the limiting portion can be an upward protrusion on the upper edge, or a downward protrusion on the lower edge. The limiting portion can prevent the swing piece from sliding laterally relative to the first limiting gap or the second limiting gap, and prevent deviation.

[0031] A second action part 8 is provided on one side of the pendulum, and the second action part 8 is mounted on the substrate 1, which can be an electromagnetic coil that cooperates with the magnet of the first action part 5. When the first action part 5 is an electromagnetic coil, the second action part can be a magnet or an electromagnetic coil. A magnetic permeable core can be provided in the electromagnetic coil. When an alternating current is passed through the electromagnetic coil of the second action part 8, it will generate a magnetic field with alternating poles, which interacts with the magnet of the first action part 5, and can attract the pendulum from the center to make it bend and approach the second action part 8, and then the pendulum 2 is subjected to the repulsive force to bend in the direction away from the second action part, thereby realizing reciprocating swing. If the second action part 8 is an electromagnetic coil passing an alternating current, and the first action part is an electromagnetic coil passing a direct current, the same effect can be achieved, or the second action part is a permanent magnet or an electromagnetic coil passing a direct current, and the first action part 5 is an electromagnetic coil passing an alternating current, the second action part 8 and the first action part 5 can also be attracted and repelled. Furthermore, when the first acting part and the second acting part are both electromagnetic coils and both carry alternating current, controllable attraction and repulsion forces will be generated, which is conducive to better controlling the amplitude and vibration frequency of the pendulum to meet the needs of different occasions.

[0032] In order to increase the air supply volume, multiple pendulum pieces can be arranged side by side, that is, multiple parallel pendulum pieces 2 are arranged, each pendulum piece 2 is supported in the first limit gap 3 and the second limit gap 4, the pendulum pieces 2 are spaced from each other, and multiple second action parts are arranged in each interval gap, and the N pole and S pole of the first action part 5 are arranged alternately in sequence, that is, if the magnet on the first pendulum piece is NS from left to right, then the magnet on the second pendulum piece is SN from left to right, the magnet on the third pendulum piece is NS again, and the fourth is SN again, and so on. At the same time, the pole order of the electromagnetic coil of the second action part is: the left and right poles of the electromagnetic coil on the right side of the first pendulum piece are NS, the left and right poles of the electromagnetic coil on the right side of the second pendulum piece are SN, the next electromagnetic coil is NS again, and the next one is SN again, and so on ( Figure 7 ). In this way, when an electromagnetic coil attracts the pendulum on the left, it repels the pendulum on the right. When the current direction of the electromagnetic coil changes and starts to repel the pendulum on the left, it attracts the pendulum on the right, and so on. In this way, the movement directions of multiple pendulums are consistent, just like the coordination of the oars of dragon boat racers ( Figure 6 ).

[0033] In a specific embodiment, the electromagnetic coil of each second action part 8 is sealed with a protective shell 11 that does not shield the magnetic field, and a magnet is arranged on the swing piece. In this way, the swing piece, the magnet and the protective shell can be rinsed with water without causing damage to the electromagnetic coil, thereby improving the convenience of cleaning. If the first action part is also an electromagnetic coil, it is necessary to seal the electromagnetic coil with a protective material and then rinse it with water. The substrate 1 can be protruded 101 on the side with the swing piece and a groove 102 can be formed on the other side, and the second action part can be arranged in the groove 102. This can also play a role in protecting and isolating the second action part, and the substrate and the upper parts on one side of the swing piece can be directly rinsed with water without causing damage to the electromagnetic coil of the second action part.

[0034] In the above embodiment, the swing piece can be made of elastic material, and the swinging of the two ends can fan the air. In order to improve the air supply effect, in a preferred embodiment, the two ends of the swing piece 2 are thickened and widened to form a fan part, which helps to increase the rigidity of the fan part and avoid deformation during the fanning process. A plurality of guide grooves 202 can also be provided on the fan part, so that the airflow is discharged outward from the guide groove without generating vortex ( Figure 3 ). You can also install rigid plates and set guide grooves at both ends of the swing plate to improve the air supply effect.

[0035] like Figure 4 , Figure 5 and Figure 8 As shown, the heat sink of the present invention is designed based on the above-mentioned air supply mechanism. A plurality of rows of fins 9 for heat dissipation are arranged on one side of the substrate 1 having the swinging piece 2. The fins 9 are arranged on both sides of the swinging piece, so that the airflow generated by the swinging piece 2 enters the array of fins 9 to take away the heat. A mounting base 12 is arranged on the other side of the substrate, and the substrate 1 can be mounted on a component that needs heat dissipation, such as a CPU chip or other chip of a computer, through the mounting base 12.

[0036] The above embodiments are only some illustrations of the concept and implementation of the present invention, and are not intended to limit the same. Under the concept of the present invention, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. An air supply mechanism, comprising a base plate and a swing plate, characterized in that: A first limiting gap and a second limiting gap are provided on the substrate, a first acting part is provided at the center of the pendulum piece, and a second acting part is provided outside the pendulum piece, the pendulum piece vertically passes through the first limiting gap and the second limiting gap, and the first acting part is located between the first limiting gap and the second limiting gap, and the pendulum piece can bend and swing when the first acting part and the second acting part alternately attract and repel each other; the first limiting gap and the second limiting gap are both surrounded by a lower limiting block, an upper limiting block and limiting blocks on both sides, the pendulum piece is located on the lower limiting block and has a gap with the substrate; the limiting blocks on both sides are two rotatable rollers; the first acting part is a magnet, the second acting part is an electromagnetic coil, or the first acting part is an electromagnetic coil, the second acting part is a magnet, or the first acting part and the second acting part are both electromagnetic coils.

2. The air supply mechanism according to claim 1, characterized in that: The swing piece has a limiting portion relative to the upper limit block and / or the lower limit block.

3. The air supply mechanism according to claim 1, characterized in that: A plurality of the swing pieces, a first limiting gap, a second limiting gap and the first action part are arranged at intervals on the substrate, and a plurality of the second action parts are located between two adjacent swing pieces.

4. The air supply mechanism according to claim 1, characterized in that: The second acting part is an electromagnetic coil, and the second acting part is isolated from the swing piece and the first limiting gap, the second limiting gap and the first acting part through a protective shell.

5. The air supply mechanism according to claim 3, characterized in that: The substrate protrudes toward one side where the swing piece is provided and forms a groove on the other side of the substrate. The second acting part is an electromagnetic coil and is located in the groove. The first acting part is a magnet.

6. The air supply mechanism according to claim 1, characterized in that: The swing piece increases thickness and width toward both ends to form a fan portion, and a plurality of guide grooves are arranged on the fan portion.

7. A radiator, comprising an air supply mechanism and fins, characterized in that: The air supply mechanism is the air supply mechanism according to any one of claims 1 to 6, the wing is arranged on a substrate of the air supply mechanism and is located on both sides of the swing piece, and a mounting base is provided on the substrate.

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