Fan blade center radiation type gradually-expanding three-dimensional flow channel fan

Abstract

The utility model discloses a fan blade center radiation type divergent three-dimensional flow channel fan, which comprises a frame body, a cover body and a fan blade group, the frame body and the cover body are respectively provided with an air inlet, a flow channel space is formed between the frame body and the cover body relative to the periphery of the fan blade group, and the flow channel space is provided with a first divergent air outlet and a second divergent air outlet. The radiating fan has the advantages that the transverse and radial gradually-expanded flow channel space is adopted, the whole flow channel space is in a radiation type divergent shape, a three-dimensional flow channel is formed, radiation type gradually-diffused heat of the fan with the fan blades as the center is achieved, and the radiating effect is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling fans, in particular to a three-dimensional flow channel fan with a fan blade center radiation type gradually expanding type. Background Technique

[0002] Based on usage considerations, small cooling fans generally use outwardly extending flow channels to improve the heat dissipation effect. The traditional flow channel is mainly an equal straight tube structure, which is connected to the air outlet. The air flow generated by the fan can be gradually expanded vertically downward through the straight tube for heat dissipation.

[0003] When the cooling fan operates at a high rotational speed, the centrifugal force increases. The traditional heat dissipation flow channel can no longer meet the air flow velocity, and the phenomenon of air flow swirling and backflow may occur, which will not only cause the problem of increased noise, but also affect the heat dissipation effect. Content of the Utility Model

[0004] The purpose of the utility model is to provide a three-dimensional flow channel fan with a fan blade center radiation type gradually expanding type to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A three-dimensional flow channel fan with a fan blade center radiation type gradually expanding type provided by the utility model includes a frame body, a cover body and a fan blade group. Air inlets are provided on both the frame body and the cover body. A flow channel space is formed between the frame body and the cover body relative to the periphery of the fan blade group. The flow channel space has a first gradually expanding air outlet and a second gradually expanding air outlet. The cover body has a first gradually expanding surface, a second gradually expanding surface, a third gradually expanding surface and a fourth gradually expanding surface. Arc transitions are provided between the first gradually expanding surface, the second gradually expanding surface, the third gradually expanding surface and the fourth gradually expanding surface.

[0007] Further optimized, the frame body includes a base plate. The frame body has a first side wall near the first gradually expanding air outlet and a second side wall near the second gradually expanding air outlet. The second side wall is in an inclined plane.

[0008] Further optimized, the first gradually expanding surface and the second gradually expanding surface are in inclined planes, and the first gradually expanding surface and the second gradually expanding surface are formed on both sides of the second gradually expanding air outlet.

[0009] Further optimized, the third gradually expanding surface and the fourth gradually expanding surface are in arc surfaces, and the third gradually expanding surface and the fourth gradually expanding surface are formed at the front end of the second gradually expanding air outlet.

[0010] Further optimized, the first gradually expanding air outlet is tapered around the periphery of the fan blade group, and is in a gradually expanding shape from the first gradually expanding air outlet to the second gradually expanding air outlet.

[0011] Beneficial effects: A three-dimensional flow channel fan with a fan blade center-radiating gradually expanding type adopts a laterally and radially gradually expanding flow channel space, making the overall flow channel space radiate and diverge, forming a three-dimensional flow channel, realizing the fan to radiate and gradually expand heat dissipation centered on the fan blade, and effectively improving the heat dissipation effect. Description of the Drawings

[0012] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 is an exploded schematic diagram of the overall structure of the present invention;

[0014] Figure 3 is a schematic diagram of a partial structure of the present invention;

[0015] Figure 4 is a schematic diagram of the cover body structure of the present invention.

[0016] Reference Numerals

[0017] 1 - housing, 101 - first side wall, 102 - second side wall, 103 - substrate, 2 - cover body, 201 - first gradually expanding surface, 202 - second gradually expanding surface, 203 - third gradually expanding surface, 204 - fourth gradually expanding surface, 3 - fan blade group, 4 - air inlet, 5 - flow channel space, 6 - first gradually expanding air outlet, 7 - second gradually expanding air outlet. Detailed Description of the Invention

[0018] The following are specific embodiments of the present invention in combination with the drawings, and the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0019] Embodiment

[0020] As Figures 1-4 shown, a three-dimensional flow channel fan with a fan blade center-radiating gradually expanding type includes a housing 1, a cover body 2 and a fan blade group 3. Air inlets 4 are provided on both the housing 1 and the cover body 2. A flow channel space 5 is formed between the housing 1 and the cover body 2 relative to the periphery of the fan blade group 3. The flow channel space 5 has a first gradually expanding air outlet 6 and a second gradually expanding air outlet 7.

[0021] In this embodiment, the housing 1 includes a substrate 103. The housing 1 has a first side wall 101 near the first gradually expanding air outlet 6, and the housing 1 has a second side wall 102 near the second gradually expanding air outlet 7. The second side wall 102 is inclined, and the first side wall 101 is linear. The diameter formed between the fan blade group 3 and the first side wall 101 is the lateral diameter of the first gradually expanding air outlet 6. The inclined second side wall 102 extends downward, forming a radially expanding diameter that expands downward between the substrate 103 and the cover 2, and extends to the second gradually expanding air outlet 7.

[0022] In this embodiment, the cover 2 has a first gradually expanding surface 201, a second gradually expanding surface 202, a third gradually expanding surface 203, and a fourth gradually expanding surface 204. The first gradually expanding surface 201, the second gradually expanding surface 202, the third gradually expanding surface 203, and the fourth gradually expanding surface 204 are all in arc transition. The first gradually expanding surface 201 and the second gradually expanding surface 202 are inclined surfaces. The first gradually expanding surface 201 and the second gradually expanding surface 202 are formed on both sides of the second gradually expanding air outlet 7. The third gradually expanding surface 203 and the fourth gradually expanding surface 204 are arc surfaces. The third gradually expanding surface 203 and the fourth gradually expanding surface 204 are formed at the front end of the second gradually expanding air outlet 7. By the first gradually expanding surface 201 and the second gradually expanding surface 202, an angle that expands forward and to both sides is formed, enabling the second gradually expanding air outlet 7 to achieve lateral gradual expansion. The third gradually expanding surface 203 and the fourth gradually expanding surface 204 expand forward in a fan shape corresponding to the lower end of the fan blade group 3, making the second gradually expanding air outlet 7 radially gradually expand.

[0023] In this embodiment, the first gradually expanding air outlet 6 is gradually constricted around the periphery of the fan blade group 3, and is gradually expanding from the first gradually expanding air outlet 6 to the second gradually expanding air outlet 7. The flow channel space 5 is overall in a trumpet shape through the first gradually expanding air outlet 6 and the second gradually expanding air outlet 7. Utilizing the laterally gradually expanding and radially gradually expanding spaces, a three-dimensional flow channel is formed to achieve radiation-type gradual expansion heat dissipation centered on the fan blades.

[0024] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A three-dimensional flow channel fan with a fan blade center radiation type gradually expanding shape, comprising a frame body (1), a cover body (2) and a fan blade group (3), characterized in that: The air inlets (4) are provided on both the housing (1) and the cover (2). A flow channel space (5) is formed between the housing (1) and the cover (2) relative to the periphery of the fan blade group (3). The flow channel space (5) has a first gradually expanding air outlet (6) and a second gradually expanding air outlet (7). The cover (2) has a first gradually expanding surface (201), a second gradually expanding surface (202), a third gradually expanding surface (203) and a fourth gradually expanding surface (204). The first gradually expanding surface (201), the second gradually expanding surface (202), the third gradually expanding surface (203) and the fourth gradually expanding surface (204) are all in arc transition.

2. The three-dimensional flow channel fan with a fan blade center radiation type gradually expanding shape according to claim 1, wherein: The housing (1) includes a base plate (103). The housing (1) has a first side wall (101) near the first gradually expanding air outlet (6), and the housing (1) has a second side wall (102) near the second gradually expanding air outlet (7). The second side wall (102) is in an inclined plane.

3. The three-dimensional flow channel fan with a fan blade center radiation type gradually expanding shape according to claim 1, wherein: The first gradually expanding surface (201) and the second gradually expanding surface (202) are in inclined planes. The first gradually expanding surface (201) and the second gradually expanding surface (202) are formed on both sides of the second gradually expanding air outlet (7).

4. A three-dimensional flow channel fan with a fan blade center radiation type gradually expanding shape according to claim 1, characterized in that: The third gradually expanding surface (203) and the fourth gradually expanding surface (204) are in arc surfaces. The third gradually expanding surface (203) and the fourth gradually expanding surface (204) are formed at the front end of the second gradually expanding air outlet (7).

5. A three-dimensional flow channel fan with a fan blade center radiation type gradually expanding shape according to claim 1, characterized in that: The first gradually expanding air outlet (6) is in a gradually shrinking shape around the periphery of the fan blade group (3), and is in a gradually expanding shape from the first gradually expanding air outlet (6) to the second gradually expanding air outlet (7).

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