Flow-increasing centrifugal fan with axial flow wing shape

Abstract

The utility model relates to a flow-increasing centrifugal fan with an axial flow wing shape, which belongs to the technical field of centrifugal fans and comprises a mounting plate and a shaft disc, no less than two axial flow blades are arranged on the outer side of the shaft disc, and an annular connecting frame is arranged on the outer side of the shaft disc. According to the flow-increasing centrifugal fan with the axial flow wing shape, the axial flow blades are additionally arranged at the roots of the centrifugal blades, the roots can be utilized, downward and peripheral diffusion can be formed after root flow vector decomposition, and downward flowing into a system cannot be discharged due to the fact that a gap between the bottom face of the fan and the installation face of the system is small; therefore, after impacting a system mounting surface, the air can be sucked into the fan again by the blades at the bottom to increase the air inlet quantity, so that the problem of poor air inlet at the bottom after entering the system is solved, a peripheral diffused flow field is pressed into the centrifugal blades, the flow increasing effect can be achieved, and the single air quantity can be increased by 10-50% under the same noise through tests. The performance of the system can be improved by 10%-40% under the same noise.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal fan technical field, concretely is a kind of flow-increasing centrifugal fan with axial flow airfoil. BACKGROUND

[0002] The fan heat dissipation system of notebook computer is the important component for maintaining the normal operation of equipment, and its main function is to take away the heat generated by internal electronic components (such as CPU, GPU, etc.) through air flow, to prevent overheating from causing performance degradation or hardware damage. The large-leaf centrifugal fan in notebook computer is a high-efficiency heat dissipation component specially designed for compact equipment. It can provide powerful air flow capacity in limited space while minimizing noise and energy consumption through special structure and working principle.

[0003] However, as the performance of notebook computer becomes higher and higher, the requirement for heat dissipation also becomes higher and higher, and the system requires more and more lightweight. Therefore, the requirement for fan is higher and higher. The traditional notebook computer ordinary large-leaf centrifugal fan has almost no air inlet at the root, which limits the overall air intake. Therefore, facing the high-performance notebook on the market, the performance is close to the limit, and it cannot meet the effective noise reduction and high-efficiency heat dissipation effect. Based on this, a flow-increasing centrifugal fan with axial flow airfoil is proposed. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a flow-increasing centrifugal fan with axial flow airfoil, which has the advantages of effective noise reduction and high-efficiency heat dissipation, and solves the problem that the traditional ordinary large-leaf centrifugal fan has almost no air inlet at the root, which limits the overall air intake and cannot meet the effective noise reduction and high-efficiency heat dissipation effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a flow-increasing centrifugal fan with axial flow airfoil, comprising a mounting plate and a shaft disc, the outer side of the shaft disc is provided with not less than two axial flow blades, the outer side of the shaft disc is provided with a ring-shaped connecting frame, and the outer side of the ring-shaped connecting frame is provided with not less than two centrifugal blades.

[0006] Further, the centrifugal blades on the opposite side of the centrifugal blades are provided with a ring-shaped ring.

[0007] Further, the axial flow blades are evenly distributed on the outer side of the shaft disc.

[0008] Further, the centrifugal blades are evenly distributed on the outer side of the ring-shaped connecting frame.

[0009] Further, the back of the mounting plate is provided with three air guide openings.

[0010] Further, the front surface of the mounting plate is provided with a circular mounting groove, the shaft disc is located inside the circular mounting groove, and the air guide opening is communicated with the circular mounting groove.

[0011] Compared with the prior art, the technical scheme has the following beneficial effects:

[0012] The flow-increasing centrifugal fan with axial flow airfoils adds axial flow blades to the root of centrifugal blades, utilizes the root, and forms downward and peripheral diffusion after the root flow vector is decomposed. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a structural schematic view of the utility model;

[0014] Fig. 2 It is a structural schematic view of the back surface of the mounting plate;

[0015] Fig. 3 It is a three-dimensional schematic view of the mounting plate;

[0016] In the drawing: 1, mounting plate; 2, shaft disc; 3, axial flow blade; 4, annular connecting frame; 5, centrifugal blade; 6, annular ring; 7, air guide opening. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] Please refer to Figs. 1 to 3 The flow-increasing centrifugal fan with axial flow airfoils, in the embodiments, comprises a mounting plate 1 and a shaft disc 2, the outer side of the shaft disc 2 is provided with not less than two axial flow blades 3, the outer side of the shaft disc 2 is provided with an annular connecting frame 4, and the outer side of the annular connecting frame 4 is provided with not less than two centrifugal blades 5.

[0019] In the embodiment, the centrifugal blades 5 opposite to each other are provided with annular rings 6, the axial flow blades 3 are uniformly distributed on the outer side of the shaft disc 2, the centrifugal blades 5 are uniformly distributed on the outer side of the annular connecting frame 4, the back surface of the mounting plate 1 is provided with three air guide openings 7, the front surface of the mounting plate 1 is provided with a circular mounting groove, the shaft disc 2 is located in the circular mounting groove, the air guide openings 7 are communicated with the circular mounting groove, the single air volume can be increased by 10%-50% under the same noise, and the performance can be increased by 10%-40% under the same noise.

[0020] It should be noted that the axial flow blades 3 are added at the roots of the centrifugal blades 5 by using the large flow characteristics of the axial flow blades 3, the roots of the centrifugal blades 5 are utilized, the flow vector of the roots is decomposed to form downward and peripheral diffusion, the downward flow cannot be discharged due to the small gap between the fan bottom surface and the system mounting surface after entering the system, and the flow is reabsorbed into the fan by the bottom blades after impacting the system mounting surface, so that the problem of poor bottom air inlet after entering the system is solved, and the peripheral diffusion flow field is pressed into the centrifugal blades 5, so that the flow is increased.

[0021] The working principle of the above embodiment is as follows:

[0022] In the application, the axial flow blades 3 are added at the roots of the centrifugal blades 5, the roots are utilized, the flow vector of the roots is decomposed to form downward and peripheral diffusion, the downward flow cannot be discharged due to the small gap between the fan bottom surface and the system mounting surface after entering the system, and the flow is reabsorbed into the fan by the bottom blades after impacting the system mounting surface, so that the problem of poor bottom air inlet after entering the system is solved, so the peripheral diffusion flow field is pressed into the centrifugal blades 5, the flow is increased, the single air volume can be increased by 10%-50% under the same noise, and the performance can be increased by 10%-40% under the same noise.

[0023] It should be noted that, in this document, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0024] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application.

Claims

1. A flow-increasing centrifugal fan with axial profile, comprising a mounting plate (1) and a shaft disc (2), characterized in that: The outer side of the shaft disc (2) is provided with not less than two axial flow vanes (3), the outer side of the shaft disc (2) is provided with a ring-shaped connecting frame (4), and the outer side of the ring-shaped connecting frame (4) is provided with not less than two centrifugal vanes (5).

2. A flow-increasing centrifugal fan with axial flow airfoils as claimed in claim 1, characterized in that: The opposite sides of the not less than two centrifugal vanes (5) are provided with annular rings (6).

3. A flow-increasing centrifugal fan with axial flow airfoils as defined in claim 1, characterized in that: The not less than two axial flow vanes (3) are uniformly distributed on the outer side of the shaft disc (2).

4. A flow-increasing centrifugal fan with axial flow airfoils as defined in claim 1, wherein: The not less than two centrifugal vanes (5) are uniformly distributed on the outer side of the ring-shaped connecting frame (4).

5. A flow-increasing centrifugal fan with axial flow airfoils as defined in claim 1, wherein: The back of the mounting plate (1) is provided with three air guide openings (7).

6. A flow-increasing centrifugal fan with axial flow airfoils as defined in claim 5, characterized in that: The front of the mounting plate (1) is provided with a circular mounting groove, the shaft disc (2) is located in the circular mounting groove, and the air guide openings (7) are in communication with the circular mounting groove.

Images