Thin fan noise reduction frame structure

Abstract

The utility model discloses a thin type fan noise reduction frame body structure which comprises a cover plate, a fan body and a frame body, an air outlet is formed in the lower end of the frame body and the lower end of the cover plate, the frame body comprises a bottom plate and a side wall, a tongue opening is formed in the side wall, and a concave portion is arranged in the frame body. The noise reduction fan has the advantages that the concave portions are additionally arranged on the inner wall of the frame body, friction between airflow and the inner wall of the frame body is reduced when the airflow passes through the interior of the frame body, the laminar flow boundary layer of fluid is prevented from being separated, the fluid is smoother, and the stable noise reduction effect is achieved under the condition that the rotating speed of the fan is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation fans, in particular to a thin fan noise reduction frame structure. Background Art

[0002] The processing speed of computers is also constantly improving. Therefore, most existing computers and electronic devices are equipped with heat dissipation devices to dissipate the heat generated by electronic components. The heat is discharged by using a cooling fan and heat-conducting fins.

[0003] When the fan is running, the airflow generated by the fan blades flows in the fan frame, rubs against the inner wall of the fan frame, and generates resonance. Most existing fan structures have the problem of high noise. Utility Model Content

[0004] The purpose of the utility model is to provide a thin fan noise reduction frame structure to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a thin fan noise reduction frame structure, comprising a cover plate, a frame and a fan body, wherein the frame and the lower end of the cover plate form an air outlet, the frame comprises a bottom plate and a side wall, a tongue is provided on the side wall, and a recess is provided in the frame.

[0007] Furthermore, the frame and the cover plate are in a snap-fit ​​structure.

[0008] Furthermore, the edge of the sector body is arranged close to the side wall.

[0009] Furthermore, the lower end of the recess extends to the air outlet and is communicated with the air outlet.

[0010] Furthermore, the recessed portion is connected to the bottom plate, the side wall, and the tongue.

[0011] Furthermore, the arc angle of the concave portion is less than R1.0.

[0012] Beneficial effects: A thin fan noise reduction frame structure, which adds a recess on the inner wall of the frame to reduce the friction between the airflow and the inner wall of the frame when passing through the inside of the frame, avoid separation of the laminar boundary layer of the fluid, make the fluid flow smoother, and achieve a stable noise reduction effect when the fan speed increases. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2Another overall structural schematic diagram of the utility model;

[0015] Figure 3 This is a schematic diagram of the frame structure of the utility model;

[0016] Figure 4 This is a test data diagram of the present utility model.

[0017] Reference numerals

[0018] 1-cover plate, 2-frame, 21-bottom plate, 22-side wall, 23-tongue, 3-fan body, 4-air outlet, 5-recess. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] Example

[0021] like Figure 1-3 As shown, a thin fan noise reduction frame structure includes a cover plate 1, a frame 2 and a fan body 3. The frame 2 and the lower end of the cover plate 1 form an air outlet 4. The frame 2 includes a bottom plate 21 and a side wall 22. The side wall 22 is provided with a tongue 23. The frame 2 has a recess 5.

[0022] The frame 2 and the cover plate 1 are in a buckled structure, and the frame 2 and the cover plate 1 are buckled together to form an internal flow channel between the fan blades and the frame 2 and the air is sent out through the outlet 4.

[0023] The lower end of the recess 5 extends to the air outlet 4 and is connected with the air outlet 4. The recess 5 is connected with the bottom plate 21, the side wall 22 and the tongue 23. The arc angle of the recess 5 is less than R1.0. After the recess 5 is connected with the air outlet 4, the inner bottom of the air outlet 4 is U-shaped, reducing the resistance of the inner wall of the frame. Through the recess 4, the fluid generated by the fan flows smoothly along the internal direction of the frame 2, avoiding the separation of the laminar boundary layer of the fluid, and achieving the noise reduction effect.

[0024] When the fan is running, the airflow generated by the rotation of the fan blades is sent out along the flow channel in the frame 2. The concave portion 2 is used to reduce the friction between the airflow and the inner wall of the frame 2 when the airflow passes through the inside of the frame 2, thereby maintaining a stable noise reduction effect when the fan speed increases.

[0025] like Figure 4 As shown in the comprehensive test data of rotation speed, wind pressure and noise, the noise is effectively reduced compared with traditional fans.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the utility model content within the protection scope of the utility model.

Claims

1. A thin fan noise reduction frame structure, comprising a cover plate (1), a frame (2) and a fan body (3), characterized in that: An air outlet (4) is formed at the lower ends of the frame (2) and the cover plate (1); the frame (2) comprises a bottom plate (21) and a side wall (22); a tongue (23) is provided on the side wall (22); and a recess (5) is provided in the frame (2).

2. A thin fan noise reduction frame structure according to claim 1, characterized in that: The frame (2) and the cover plate (1) are in a buckling structure.

3. The thin fan noise reduction frame structure according to claim 1, characterized in that: The edge of the fan body (3) is arranged close to the side wall (22).

4. The thin fan noise reduction frame structure according to claim 1, characterized in that: The lower end of the recess (5) extends to the air outlet (4) and is in communication with the air outlet (4).

5. The thin fan noise reduction frame structure according to claim 1, characterized in that: The recess (5) is connected to the bottom plate (21), the side wall (22), and the tongue (23).

6. The thin fan noise reduction frame structure according to claim 1, characterized in that: The arc angle of the concave portion (5) is less than R1.0.

Images