Direct blowing type cross flow fan

Abstract

The invention discloses a direct blowing type cross flow fan which comprises a mounting frame, a wind shielding piece, a fan blade assembly and a driving mechanism. The wind shielding piece comprises the integrally-formed fixing plate and the wind shielding plate facing the air outlet, the wind shielding piece is matched with the wind shielding plate to be obliquely arranged, and the distance between the outer end of the wind shielding plate and the side wall of the mounting frame is larger than the distance between the inner end of the wind shielding plate and the side wall of the mounting frame; the fan blade assembly is arranged in the air outlet, air blown out when the fan blade assembly works is blown to the air baffle when reaching the air outlet, then the direction of blown cold air is changed through the obliquely-arranged air baffle, the cold air can be directly blown out of the air outlet, and therefore the cold air can be directly blown to the surface of an external host, the heat dissipation effect is better, and the heat dissipation efficiency is improved. And the mounting frame does not need to be obliquely mounted, so that the mounting mode is more convenient.

Description

Technical Field

[0001] The invention relates to the field of heat dissipation devices, and in particular to a direct-blowing cross-flow fan. Background Art

[0002] Integrated circuits are widely used in computer components. As we all know, high temperature is the enemy of integrated circuits. High temperature will not only cause unstable system operation and shorten service life, but may even burn some components. The heat that causes high temperature does not come from outside the computer, but from inside the computer, or inside the integrated circuit. The function of the radiator is to absorb this heat and then dissipate it into or outside the chassis to ensure that the temperature of computer components is constant. Most radiators absorb heat by contacting the surface of the heat-generating components, and then transfer the heat to a distant place through various methods, such as the air in the chassis, and then the chassis transfers the hot air to the outside of the chassis to complete the heat dissipation of the computer. For larger hosts, additional fans need to be installed for heat dissipation.

[0003] The existing host cooling fan draws air from the outside into the inside through the rotation of the fan blades, and then blows it out from the air outlet to the host, thereby taking away the heat on the surface of the host. Since the wind direction blown out by the rotation of the fan blades is blown out along the tangent direction of the fan blades, the wind blown out by the existing cooling fan is mostly blown out obliquely; the obliquely blown cold air cannot be blown directly on the host to be cooled or can only be blown partially on the host, resulting in poor heat dissipation effect. In order to ensure that the blown cold air is blown directly on the external host, the cooling fan needs to be installed obliquely, making the installation process of the cooling fan more troublesome. Therefore, it is necessary to further improve the existing cooling fan structure. Summary of the invention

[0004] In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a direct-blowing cross-flow fan, which can effectively solve the problems of the existing cooling fans being unable to directly blow cold air, having poor cooling effects, and having a cumbersome installation process.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A direct-blowing cross-flow fan comprises a mounting frame, a wind shield, a fan blade assembly and a driving mechanism; the mounting frame has a mounting cavity extending laterally and opening laterally; the wind shield is arranged on the mounting frame in a laterally extending manner and is located at the opening of the mounting cavity, the wind shield divides the opening of the mounting cavity into an air inlet and an air outlet, the wind shield comprises an integrally formed fixing plate and a wind shield facing the air outlet, the wind shield is arranged obliquely, and the distance between the outer end of the wind shield and the side wall of the mounting frame is greater than the distance between the inner end of the wind shield and the side wall of the mounting frame; the fan blade assembly is arranged on the mounting frame and is located in the mounting cavity so as to be rotatable back and forth, and the fan blade assembly is arranged to extend laterally; the driving mechanism is arranged on the mounting frame and drives the fan blade assembly to rotate back and forth.

[0007] As a preferred solution, the wind deflector has an inclination angle of 6-20°.

[0008] As a preferred solution, the width of the wind shield is 5-8 mm.

[0009] As a preferred solution, the vertical distance between the fan blade assembly and the fixing plate is 2-8 mm.

[0010] As a preferred solution, the fan blade assembly includes a mounting plate and fan blades, wherein the mounting plates are multiple and arranged at intervals laterally, and the fan blades are multiple and arranged at equal angles, and the multiple fan blades pass through the multiple mounting plates in sequence and are fixed together between the mounting plates.

[0011] As a preferred solution, there are 22 fan blades arranged at equal angles, and the width of each fan blade is 7-8mm.

[0012] As a preferred solution, the mounting plate is circular, each fan blade is inclined relative to the radius of the mounting plate, and the inclination angle of the fan blade is 26-29°.

[0013] As a preferred solution, the fan blade assemblies are two arranged horizontally, a support plate is provided on the mounting frame, the support plate is located in the mounting cavity, and the two fan blade assemblies are respectively arranged on the left and right sides of the support plate and connected together by a transmission rod.

[0014] As a preferred solution, the fixing plate and the supporting plate are fixedly installed together.

[0015] As a preferred solution, the mounting frame is provided with a guide portion arranged in an arc shape to fit the rotation direction of the fan blade assembly, and the guide portion extends laterally and is located on the outside of the fan blade assembly.

[0016] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0017] The wind shield member includes an integrally formed fixing plate and a wind shield facing the air outlet, and the wind shield is arranged obliquely, so that the distance between the outer end of the wind shield and the side wall of the mounting frame is greater than the distance between the inner end of the wind shield and the side wall of the mounting frame; when the fan blade assembly is working, the wind blown out first blows on the wind shield when it reaches the air outlet, and then the wind direction of the blown cold air is changed through the inclined wind shield, so that it can be blown directly from the air outlet, so that the cold air can be directly blown to the surface of the external host, which not only has a better heat dissipation effect, but also does not need to be installed at an angle for the mounting frame, and the installation method is also more convenient.

[0018] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a preferred embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of the decomposed state of a preferred embodiment of the present invention;

[0021] Figure 3 It is a cross-sectional schematic diagram of a preferred embodiment of the present invention.

[0022] Description of the accompanying drawings:

[0023] 10. Mounting frame 101. Mounting cavity

[0024] 102. Air inlet 103. Air outlet

[0025] 11. Support plate 12. Guide part

[0026] 20. Wind shield 21. Fixing plate

[0027] 22. Wind shield 30. Fan blade assembly

[0028] 31. Mounting plate 32. Fan blade

[0029] 33. Transmission rod 40. Driving mechanism. DETAILED DESCRIPTION

[0030] Please refer to Figures 1 to 3 As shown, it shows the specific structure of a preferred embodiment of the present invention, which includes a mounting frame 10, a wind shield 20, a fan blade assembly 30 and a driving mechanism 40.

[0031] The mounting frame 10 has a mounting cavity 101 extending transversely and opening laterally;

[0032] The windshield 20 is arranged on the mounting frame 10 in a transversely extending manner and is located at the opening of the mounting cavity 101. The windshield 20 divides the opening of the mounting cavity 101 into an air inlet 102 and an air outlet 103. The windshield 20 includes an integrally formed fixing plate 21 and a windshield 22 facing the air outlet 103. The windshield 22 is arranged obliquely. The distance between the outer end of the windshield 22 and the side wall of the mounting frame 10 is greater than the distance between the inner end of the windshield 22 and the side wall of the mounting frame 10. The wind direction of the cold air blown out of the air outlet 103 is changed by the obliquely arranged windshield 22, so that the cold air can be blown out directly from the air outlet 103. In this embodiment, the inclination angle of the windshield 22 is 6-20°. The angle of the windshield 22 can be changed according to the amount of air blown out, so as to ensure the angle of the cold air blown out. The width of the windshield 22 is 5-8mm. The wider the width of the windshield 22, the better the effect of changing the angle of the cold air.

[0033] The fan blade assembly 30 can be rotatably arranged on the mounting frame 10 and is located in the mounting cavity 101. The fan blade assembly 30 is arranged to extend horizontally; wherein the rotation direction of the fan blade assembly 30 corresponds to the tilt direction of the wind shield 22, so that the cold wind brought out by the fan blade assembly 30 can be directly blown on the wind shield 22 and the wind direction of the cold wind can be changed through the wind shield 22. In this embodiment, the vertical distance between the fan blade assembly 30 and the fixing plate 21 is 6-8mm. When the vertical distance between the fan blade assembly 30 and the fixing plate 21 is larger, the air volume blown out will be smaller. When the vertical distance between the fan blade assembly 30 and the fixing plate 21 is smaller, the air volume blown out will be larger, but the noise will be greater at the same time. Therefore, when the vertical distance is between 2-8mm, the air volume blown out and the noise reach the best effect.

[0034] The fan blade assembly 30 includes a mounting plate 31 and a fan blade 32. The mounting plates 31 are arranged in a plurality of lateral intervals, and the fan blades 32 are arranged in a plurality of equal angles. The plurality of fan blades 32 sequentially pass through the plurality of mounting plates 31 and are fixed together with the mounting plates 31. The fan blades 32 are fixedly installed in the mounting cavity 101 through the mounting plates 31. The fan blades 32 are arranged in 22 equal angles, and the width of each fan blade 32 is 7-8mm. The mounting plate 31 is circular, and each fan blade 32 is inclined between the radius of the mounting plate 31, and the inclination angle of the fan blade 32 is 26-29°. When the inclination angle of the fan blade 32 is larger, the air volume is smaller, and the noise during operation is also smaller. When the inclination angle of the fan blade 32 is smaller, the air volume is larger, but the noise is also larger. Therefore, when the inclination angle is between 26-29°, the air volume and noise can achieve the best effect. The fan blade assembly 30 is two arranged transversely, and a support plate 11 is provided on the mounting frame 10, and the support plate 11 is located in the mounting cavity 101. The two fan blade assemblies 30 are respectively arranged on the left and right sides of the support plate 11 and connected together by a transmission rod 33. The two fan blade assemblies 30 are synchronously transmitted through the connection of the transmission rod 33. The support plate 11 supports the two fan blade assemblies 30 at the same time, and when the overall size is large, the stability of the overall structure can also be guaranteed. The fixed plate 21 is fixedly installed with the support plate 11, and the support plate 11 can also support the windshield 20, further improving the stability of the overall structure. The mounting frame 10 is provided with a guide portion 12 arranged in an arc shape in accordance with the rotation direction of the fan blade assembly 30. The guide portion 12 extends transversely and is located on the outside of the fan blade assembly 30. The guide portion 12 is used to guide the air entering from the air inlet 102, so that it is convenient for it to be sent out from the air outlet 103 under the drive of the fan blade assembly 30.

[0035] The driving mechanism 40 is disposed on the mounting frame 10 and drives the fan blade assembly 30 to rotate back and forth. In this embodiment, the driving mechanism 40 is a motor.

[0036] The design focus of the present invention is that the wind shield member includes an integrally formed fixing plate and a wind shield facing the air outlet, and the wind shield is inclinedly arranged, so that the distance between the outer end of the wind shield and the side wall of the mounting frame is greater than the distance between the inner end of the wind shield and the side wall of the mounting frame; when the fan blade assembly is working, the wind blown out first blows on the wind shield when it reaches the air outlet, and then the wind direction of the blown cold air is changed through the inclined wind shield, so that it can be blown directly out from the air outlet, so that the cold air can be directly blown to the surface of the external host, which not only has a better heat dissipation effect, but also does not need to be installed at an angle for the mounting frame, and the installation method is also more convenient.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A direct-blowing cross-flow fan, characterized in that: It includes a mounting frame, a windshield, a fan blade assembly and a driving mechanism; the mounting frame has a mounting cavity which extends laterally and opens laterally; the windshield is arranged on the mounting frame in a laterally extending manner and is located at the opening of the mounting cavity, the windshield separates the opening of the mounting cavity into an air inlet and an air outlet, the windshield includes an integrally formed fixing plate and a windshield facing the air outlet, the windshield is arranged obliquely, and the distance between the outer end of the windshield and the side wall of the mounting frame is greater than the distance between the inner end of the windshield and the side wall of the mounting frame; the fan blade assembly is arranged on the mounting frame and is located in the mounting cavity so as to be rotatable back and forth, and the fan blade assembly is arranged to extend laterally; the driving mechanism is arranged on the mounting frame and drives the fan blade assembly to rotate back and forth.

2. The direct-blowing cross-flow fan according to claim 1, characterized in that: The windshield has an inclination angle of 6-20°.

3. The direct-blowing cross-flow fan according to claim 1, characterized in that: The width of the windshield is 5-8 mm.

4. The direct-blowing cross-flow fan according to claim 1, characterized in that: The vertical distance between the fan blade assembly and the fixing plate is 2-8 mm.

5. The direct-blowing cross-flow fan according to claim 1, characterized in that: The fan blade assembly includes a mounting plate and fan blades. The mounting plates are arranged in a plurality at intervals in a transverse direction, and the fan blades are arranged in a plurality at equal angles. The plurality of fan blades pass through the plurality of mounting plates in sequence and are fixed together between the mounting plates.

6. The direct-blowing cross-flow fan according to claim 5, characterized in that: There are 22 fan blades arranged at equal angles, and the width of each fan blade is 7-8mm.

7. The direct-blowing cross-flow fan according to claim 5, characterized in that: The mounting plate is circularly arranged, and each fan blade is inclined relative to the radius of the mounting plate, and the inclination angle of the fan blade is 26-29°.

8. The direct-blowing cross-flow fan according to claim 1, characterized in that: The fan blade assemblies are two arranged transversely, a support plate is provided on the mounting frame, the support plate is located in the mounting cavity, and the two fan blade assemblies are respectively arranged on the left and right sides of the support plate and are connected together through a transmission rod.

9. The direct-blowing cross-flow fan according to claim 8, characterized in that: The fixing plate and the supporting plate are fixedly installed together.

10. The direct-blowing cross-flow fan according to claim 1, characterized in that: The mounting frame is provided with an arc-shaped guide portion which is in contact with the rotation direction of the fan blade assembly. The guide portion extends transversely and is located on the outside of the fan blade assembly.

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