Cooling fan

Abstract

The utility model relates to the technical field of cooling fans, in particular to a cooling fan. Comprising a shell, a stator, a magnetic ring, an impeller and fan blades, fan blades are fixedly connected to the interior of the shell, a shaft sleeve is fixedly connected to the fan blades, a stator is connected to the other end of the shaft sleeve, a magnetic ring is connected to the periphery of the stator, and an impeller is fixedly connected to the periphery of the magnetic ring; the impeller is an air inlet end, the fan blades are air outlet ends, and arc concave notches are formed in the ends, close to the shell, of the fan blades. Compared with the prior art, the air duct is optimized, the arc concave notches are formed in the arc-direction ends of the blades, airflow can pass through the arc concave notches conveniently, turbulent flow is effectively improved, air exhausting of the air duct is smoother, noise can be effectively lowered, the using effect of the cooling fan is improved, and the cooling fan is convenient to use. And the air outlet duct is smooth, so that the air outlet effect can be improved.

Description

Technical Field

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

[0002] A cooling fan is a tool used to dissipate heat from equipment or electronic products. Its structure generally includes a casing, a motor and an impeller. The motor drives the impeller to rotate, forming a strong airflow, which then extracts and discharges the heat.

[0003] At present, some existing cooling fans are also provided with fan blades at the air outlet to better exhaust air. However, when the air is discharged, turbulence will be formed when the air meets the end of the fan blade. The greater the turbulence, the greater the noise will be. Moreover, this situation also makes the air duct unsmooth, affecting the air outlet effect, thereby reducing the use effect of the cooling fan. For this reason, we propose a new cooling fan Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a heat dissipation fan, which, after being improved, can effectively solve the problems raised in the above-mentioned background technology.

[0005] The technical solution of the utility model is:

[0006] A heat dissipation fan comprises a housing, a stator, a magnetic ring, an impeller and fan blades;

[0007] The inside of the shell is fixedly connected with a fan blade, the fan blade is fixedly connected with a shaft sleeve, the other end of the shaft sleeve is connected with a stator, the outer periphery of the stator is connected with a magnetic ring, the outer periphery of the magnetic ring is fixedly connected with an impeller; the impeller is the air inlet end, the fan blade is the air outlet end, and an arc concave notch is provided at one end of the fan blade close to the shell.

[0008] Furthermore, the shell and the fan blades are an integrally formed structure.

[0009] Furthermore, the fan blade includes a connecting shell and blades, a plurality of blades are connected to the side of the connecting shell, the blades are in an arc-shaped structure, and the arc concave notch is arranged on the arc-shaped end of the blade.

[0010] Furthermore, a mounting hole is provided in the inner middle portion of the connecting shell, and the shaft sleeve is fixedly installed in the mounting hole.

[0011] Furthermore, a plurality of heat dissipation gaps are provided on the side of the connecting shell.

[0012] Furthermore, a wiring shell is installed on the side of the shell, the wiring shell is vertically arranged, and wiring terminals are installed on the wiring shell.

[0013] Furthermore, an air duct is formed between adjacent blades.

[0014] The beneficial effects of the utility model are:

[0015] Compared with the prior art, the utility model optimizes the air duct by providing an arc-shaped notch on the arc-shaped end of the blade. The arc-shaped notch can facilitate the passage of airflow, effectively improve turbulence, and make the exhaust of the air duct smoother, thereby effectively reducing noise and improving the use effect of the cooling fan. Moreover, the smooth air outlet duct can also improve the air outlet effect. At the same time, the blades are in an arc-shaped structure, which not only realizes directional exhaust and makes the gas discharge more concentrated, but also reduces resistance, forms a strong air volume, and greatly improves the heat dissipation effect of the cooling fan. In addition, the utility model adopts fan blades to fix the stator, magnetic ring and impeller, thereby simplifying the structure of the fan, which is conducive to cost reduction and further reducing the resistance caused by the setting of the fixing parts. It has good use effect and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of another side of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model after the impeller is disassembled;

[0019] Figure 4 This is a schematic diagram of the structure of the utility model after the impeller and the magnetic ring iron shell are disassembled;

[0020] Figure 5 It is a structural schematic diagram of the shell connected to the fan blades of the utility model.

[0021] In the figure, 1, outer shell; 2, stator; 3, magnetic ring; 4, impeller; 5, fan blade; 6, shaft sleeve; 7, arc concave notch; 8, connecting shell; 9, blade; 10, heat dissipation notch; 11, wiring shell; 12, wiring terminal; 13, air duct; 14, magnetic ring iron shell. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0023] like Figure 1-5 As shown,

[0024] A heat dissipation fan comprises a housing 1, a stator 2, a magnetic ring 3, an impeller 4 and blades 5; the interior of the housing 1 is fixedly connected with the blades 5, and the housing 1 and the blades 5 are an integrally formed structure, so that the blades 5 become a fixing member connecting the stator 2, the magnetic ring 3 and the impeller 4; the blades 5 are fixedly connected with a sleeve 6, the other end of the sleeve 6 is connected with the stator 2, the outer periphery of the stator 2 is connected with the magnetic ring 3, and the outer periphery of the magnetic ring 3 is fixedly connected with the impeller 4; the impeller 4 is an air inlet end, the blades 5 are an air outlet end, and the blades 5 are close to the stator 2. An arc-shaped notch 7 is provided at one end of the shell 1; in the present embodiment, the arc-shaped notch 7 is provided, so that the airflow can pass through easily, and the turbulence can be effectively improved, so that the exhaust of the air duct 13 is smoother, and the noise can be effectively reduced; in addition, the utility model adopts the fan blade 5 to fix the stator 2, the magnetic ring 3 and the impeller 4, so as to simplify the structure of the fan (reduce the fixing parts), which is beneficial to cost reduction (reduce the material cost of the fixing parts and reduce the production process) and further reduce the resistance caused by the setting of the fixing parts, and the use effect is good.

[0025] As a preferred embodiment, a magnetic ring iron shell 14 is also provided between the magnetic ring 3 and the impeller 4. The magnetic ring iron shell 14 is fixed to the impeller 4 as a whole, which can enhance the effect of the magnetic field.

[0026] As a preferred embodiment; the fan blade 5 includes a connecting shell 8 and blades 9, and a plurality of blades 9 are connected to the side of the connecting shell 8, and the blades 9 are in an arc-shaped structure. The arc-concave notch 7 is arranged on the arc-shaped end of the blade 9; an air duct 13 is formed between adjacent blades 9; the blades 9 are in an arc-shaped structure, which not only realizes directional exhaust and makes the gas discharge more concentrated, but also reduces resistance, forms a strong air volume, and greatly improves the heat dissipation effect of the heat dissipation fan.

[0027] As a preferred embodiment; a mounting hole is provided in the inner middle portion of the connecting shell 8, and the sleeve 6 is fixedly installed in the mounting hole; a mounting hole is provided in the middle portion of the connecting shell 8 so that the sleeve 6 is located in the middle position of the fan blade 5. When the stator 2, the magnetic ring 3 and the impeller 4 are connected, the impeller 4 can be effectively located in the center position of the outer shell 1, thereby enhancing the air extraction effect.

[0028] As a preferred embodiment, the side of the connecting shell 8 is also provided with a plurality of heat dissipation gaps 10; by providing the heat dissipation gaps 10, the heat dissipation effect inside the fan can be improved, which is beneficial to prolonging the service life of the fan.

[0029] As a preferred embodiment, a wiring shell 11 is installed on the side of the housing 1, and the wiring shell 11 is vertically arranged. A wiring terminal 12 is installed on the wiring shell 11. The purpose of this design is to arrange the wiring terminal 12 on the vertically structured wiring shell 11, which is not only more beautiful, but also more convenient to use. It can be directly plugged in and powered on in a vertical position. The wiring terminal 12 will be electrically connected to the wire on the stator 2.

[0030] The working principle of the utility model is: after the stator 2 is energized, a magnetic field is generated to drive the magnetic ring 3 to rotate, and then drive the impeller 4 to rotate, so that air continuously enters the interior of the housing 1 and is then discharged through the air duct 13 of the fan blade 5.

[0031] It should be pointed out that the main problem in the prior art is that when the air is discharged, turbulence will be formed when the air meets the end of the fan blade. The greater the turbulence, the greater the noise will be. In addition, this situation also makes the air duct unsmooth, affecting the air outlet effect, thereby reducing the use effect of the cooling fan;

[0032] Therefore, after the improvement of the present application, the air duct 13 is optimized by providing an arc-shaped notch 7 on the arc-shaped end of the blade 9. The arc-shaped notch 7 can facilitate the passage of airflow, effectively improve turbulence, and make the exhaust of the air duct 13 smoother, thereby effectively reducing noise and improving the use effect of the cooling fan. Moreover, the smoothness of the air outlet duct 13 can also improve the air outlet effect and the heat dissipation effect.

[0033] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A heat dissipation fan, comprising a housing, a stator, a magnetic ring, an impeller and fan blades; the interior of the housing is fixedly connected with the fan blades, characterized in that: The fan blade is fixedly connected to a shaft sleeve, the other end of the shaft sleeve is connected to a stator, the outer periphery of the stator is connected to a magnetic ring, and the outer periphery of the magnetic ring is fixedly connected to an impeller; the impeller is an air inlet end, the fan blade is an air outlet end, and an arc concave notch is provided at one end of the fan blade close to the outer shell.

2. A cooling fan according to claim 1, characterized in that: The shell and the fan blades are an integrally formed structure.

3. A cooling fan according to claim 2, characterized in that: The fan blade comprises a connecting shell and blades. A plurality of blades are connected to the side of the connecting shell. The blades are in an arc-shaped structure. The arc-shaped notches are arranged on the arc-shaped ends of the blades.

4. A cooling fan according to claim 3, characterized in that: The inner middle portion of the connecting shell is provided with a mounting hole, and the shaft sleeve is fixedly mounted in the mounting hole.

5. A cooling fan according to claim 4, characterized in that: The side surface of the connecting shell is also provided with a plurality of heat dissipation gaps.

6. A cooling fan according to claim 5, characterized in that: A wiring shell is installed on the side of the shell, the wiring shell is vertically arranged, and wiring terminals are installed on the wiring shell.

7. A cooling fan according to claim 6, characterized in that: An air channel is formed between adjacent blades.

Images