Small fan with high heat dissipation performance

Abstract

The utility model relates to a high-heat-dissipation small fan which comprises an outer shell, an inner shell arranged on the outer shell, a cover body fixed to the inner shell and a fanning mechanism arranged on the cover body, the fanning mechanism comprises a motor and a fanning assembly, the cover body is provided with a mounting base, a mounting cavity is formed in the mounting base, a heat dissipation base is contained in the mounting cavity, and the heat dissipation base is arranged in the mounting cavity. A containing cavity for containing the motor is formed in the heat dissipation base, the mounting base is covered with a fixing plate, and the heat dissipation base is limited in the mounting cavity through the fixing plate; ventilation holes are formed in the bottom wall and the side wall of the cover body, heat dissipation grooves are formed in the bottom wall of the heat dissipation base, longitudinal heat dissipation channels are formed in the heat dissipation base, the depth direction of the longitudinal heat dissipation channels is the height direction of the heat dissipation base, transverse heat dissipation channels are formed in the heat dissipation base, and the depth direction of the transverse heat dissipation channels is the length direction of the heat dissipation base. And heat dissipation holes are formed in the bottom wall of the mounting base and communicate with the mounting cavity and the exterior of the cover body. The LED lamp has the effect of being good in heat dissipation performance.

Description

Technical Field

[0001] The present application relates to the field of fans, and in particular to a small fan with high heat dissipation performance. Background Art

[0002] An electric fan is a household appliance that uses an electric motor to drive the blades to rotate to provide cooling and air circulation. Electric fans are mainly composed of fan heads, blades, mesh covers, and control devices. They are widely used in homes, classrooms, offices, shops, hospitals, supermarkets, and hotels.

[0003] Table fans are commonly used electrical appliances for cooling off in daily life. Common table fans are mainly driven by motors to drive the blades to rotate. After working for a long time, the motor will gradually accumulate heat. When the internal temperature of the motor rises, it will affect the performance of the motor and reduce the fanning effect of the fan. The fan may even stop running due to motor failure. This needs to be improved. Utility Model Content

[0004] In order to improve the heat dissipation of the motor and ensure the stable operation of the electric fan, the present application provides a small fan with high heat dissipation.

[0005] The present application provides a small fan with high heat dissipation performance, which adopts the following technical solution:

[0006] The fan as claimed in claim 1, wherein the arcuate stop is provided with a plurality of arcs which are provided in the plurality of opposite ends of the arcs, and the arcuate stop is provided with a plurality of arcs which are provided in the plurality of arcs.

[0007] By adopting the above technical scheme, the heat sink is fixed in the mounting base and covered by the fixing plate. The heat sink is provided with longitudinal heat dissipation channels and transverse heat dissipation channels for heat dissipation of the motor. In addition to the ventilation holes provided on the cover body, heat dissipation grooves are provided on the bottom of the heat sink to increase ventilation and improve the heat dissipation effect. The heat sink itself can absorb part of the heat, and the heat of the heat sink is dissipated through the ventilation of the heat sink groove. The motor is cooled in time in terms of ventilation and heat conduction, so that the fan has good heat dissipation performance.

[0008] Optionally, a limit assembly is provided on the mounting base, and the limit assembly includes a first limit block abutting against two sides of the heat sink, a second limit block abutting against two sides of the heat sink, and a third limit block abutting against the end of the heat sink, the first limit block is located at the top of the heat sink, the second limit block is located in the middle of the heat sink, and the third limit block is located at the bottom of the heat sink.

[0009] By adopting the above technical solution, a limiting component is provided to fix the heat sink, so that the heat sink is stably fixed in the mounting seat to prevent the heat sink from moving when the motor is working.

[0010] Optionally, a rubber pad is provided on the side wall of the accommodating cavity, and the rubber pad abuts against the outer wall of the motor.

[0011] By adopting the above technical solution, the rubber pad can be set to facilitate the installation and fixation of the motor to make the motor stable, and the good thermal insulation of the rubber can reduce the heat transfer of the motor to the heat sink. When the heat sink does not accumulate too much heat, the motor will not accumulate heat and heat up due to the inability to dissipate heat from the heat sink, and the heat of the motor can be dissipated through air flow.

[0012] Optionally, the heat sink is a thermally conductive plastic heat sink.

[0013] By adopting the above technical solution, the heat sink made of thermally conductive plastic material has good thermal conductivity, so that the heat sink can take away the heat transferred by the motor through the flowing air, thereby preventing heat accumulation and causing the motor to heat up.

[0014] Optionally, the fan assembly includes a connecting rod coaxially fixed to the motor output shaft and fan blades fixed to the outer wall of the connecting rod.

[0015] By adopting the above technical solution, the connecting rod is connected and fixed to the output shaft of the motor, so that the fan blades rotate when the connecting rod rotates to fan out air.

[0016] Optionally, a locking screw is provided on the inner shell, and the locking screw is used to fix the outer shell to the inner shell.

[0017] By adopting the above technical solution, a locking screw is arranged to fix the outer shell and the inner shell, so that the outer shell can be opened conveniently to inspect the inside of the fan.

[0018] Optionally, the outer wall of the cover is rotatably connected to a control knob, and the control knob is used to control the rotation speed of the motor.

[0019] By adopting the above technical solution, a control knob is provided to conveniently control the number of gears and on and off of the fan.

[0020] Optionally, supporting feet are fixed on the inner shell, and when the supporting feet are supported on the ground, the outer shell and the inner shell are tilted upward in a direction close to the cover body.

[0021] By adopting the above technical solution, in order to improve the stability when placing the fan, the outer shell and the inner shell are tilted when supported by the supporting feet to prevent the fan from tipping over.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The heat sink is fixed in the mounting base and covered by the fixing plate. The heat sink is provided with longitudinal and transverse heat sinks for heat dissipation of the motor. In addition to the ventilation holes on the cover, heat sink grooves are provided on the bottom of the heat sink to increase ventilation and improve the heat dissipation effect. The heat sink itself can absorb part of the heat. The heat of the heat sink is dissipated through the ventilation of the heat sink groove. The motor is cooled in time in terms of ventilation and heat conduction, so that the fan has good heat dissipation performance.

[0024] 2. Set a limit assembly to fix the heat sink so that the heat sink is stably fixed in the mounting base to prevent the heat sink from moving when the motor is working;

[0025] 3. Set the control knob to easily control the number of gears and on and off of the fan;

[0026] 4. To improve the stability when placing the fan, the outer shell and the inner shell are tilted when supported by the supporting feet to prevent the fan from tipping over. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The overall structure of the small fan with high heat dissipation performance according to the embodiment of the present application is shown in FIG. Figure 1 .

[0028] Figure 2 The overall structure of the small fan with high heat dissipation performance according to the embodiment of the present application is shown in FIG. Figure 2 .

[0029] Figure 3 It is a schematic structural diagram of the fan assembly of the embodiment.

[0030] Figure 4 It is a schematic structural diagram of a mounting base and a heat sink in an embodiment.

[0031] Explanation of the accompanying drawings: 1. outer shell; 2. inner shell; 3. cover body; 4. fan mechanism; 41. motor; 42. fan assembly; 421. connecting rod; 422. fan blade; 5. mounting seat; 6. mounting cavity; 7. heat sink; 8. accommodating cavity; 9. fixing plate; 10. fixing screw; 11. ventilation hole; 12. heat dissipation groove; 13. longitudinal heat dissipation channel; 14. transverse heat dissipation channel; 15. heat dissipation hole; 16. limit assembly; 161. first limit block; 162. second limit block; 163. third limit block; 17. rubber pad; 18. control knob; 19. support foot; 20. through hole; 21. locking screw. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The present application discloses a small fan with high heat dissipation performance. Figure 1 and Figure 2 The small fan with high heat dissipation performance comprises an outer shell 1, an inner shell 2 fixed on the outer shell 1, a cover body 3 fixed on the inner shell 2 and a fan mechanism 4 installed on the cover body 3.

[0034] Reference Figure 3 and Figure 4 The fan mechanism 4 includes a motor 41 and a fan assembly 42. The cover body 3 is integrally fixed with a mounting seat 5. The mounting seat 5 is provided with a mounting cavity 6. The mounting cavity 6 accommodates a heat sink 7. The heat sink 7 is provided with an accommodating cavity 8 for accommodating the power supply 41. The mounting seat 5 is covered with a fixing plate 9. The fixing plate 9 limits the heat sink 7 to the mounting cavity 6. The fixing plate 9 is provided with a fixing screw 10 for fixing the fixing plate 9 to the mounting seat 5.

[0035] Reference Figure 4 The cover body 3 is provided with ventilation holes 11 on the bottom wall and side walls, the bottom wall of the heat sink 7 is provided with a heat dissipation groove 12, the heat sink 7 is provided with a longitudinal heat dissipation channel 13, the depth direction of the longitudinal heat dissipation channel 13 is the height direction of the heat sink 7, the heat sink 7 is provided with a transverse heat dissipation channel 14, the depth direction of the transverse heat dissipation channel 14 is the length direction of the heat sink 7, and the bottom wall of the mounting seat 5 is provided with a heat dissipation hole 15, which connects the mounting cavity 6 and the outside of the cover body 3.

[0036] Reference Figure 4 The mounting seat 5 is fixed with a limiting assembly 16, which includes a first limiting block 161 abutting against both sides of the heat sink 7, a second limiting block 162 abutting against both sides of the heat sink 7, and a third limiting block 163 abutting against the end of the heat sink 7. The first limiting block 161 is located at the top of the heat sink 7, the second limiting block 162 is located in the middle of the heat sink 7, and the third limiting block 163 is located at the bottom of the heat sink 7. The first limiting block 161, the second limiting block 162 and the third limiting block 163 are all fixed on the mounting seat 5.

[0037] Reference Figure 4 A rubber pad 17 is fixed on the side wall of the accommodating cavity 8, and the rubber pad 17 abuts against the outer wall of the motor 41. The heat sink 7 is a heat-conducting plastic heat sink.

[0038] Reference Figure 2 and Figure 3 A locking screw 21 is installed on the outer shell 1, and the locking screw 21 fixes the outer shell 1 to the inner shell 2.

[0039] Reference Figure 3 The fan assembly 42 includes a connecting rod 421 coaxially fixed to the output shaft of the motor 41 and a fan blade 422 fixed to the outer wall of the connecting rod 421.

[0040] Reference Figure 2 The wall is rotatably connected to a control knob 18, and the control knob 18 is used to control the speed of the motor 41, thereby controlling whether the fan is working and the number of gears of the fan.

[0041] Reference Figure 1 and Figure 2 A supporting foot 19 is fixed on the inner shell 2. When the supporting foot 19 is supported on the ground, the outer shell 1 and the inner shell 2 are tilted upward toward the direction close to the cover body 3.

[0042] Reference Figure 2 and Figure 4 The cover body 3 is provided with a through hole 20 for the power supply line to pass through.

[0043] The implementation principle of a small fan with high heat dissipation performance in an embodiment of the present application is as follows: the heat sink 7 is installed and fixed in the mounting base 5 and covered by the fixing plate 9. The heat sink 7 is provided with a longitudinal heat dissipation channel 13 and a transverse heat dissipation channel for dissipating the heat of the motor 41. In addition to the ventilation holes 11 provided on the cover body 3, a heat dissipation groove 12 is further provided on the bottom of the heat sink 7 to increase ventilation and improve the heat dissipation effect. The heat sink 7 itself can absorb part of the heat. The heat of the heat sink 7 is dissipated through the ventilation of the heat sink 12. The motor 41 is dissipated in time in terms of ventilation and heat conduction, so that the fan has good heat dissipation performance.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A small fan with high heat dissipation performance, characterized in that: The invention comprises an outer shell (1), an inner shell (2) arranged on the outer shell (1), a cover body (3) fixed on the inner shell (2), and a fan mechanism (4) arranged on the cover body (3); the fan mechanism (4) comprises a motor (41) and a fan assembly (42); the cover body (3) is provided with a mounting seat (5); a mounting cavity (6) is provided in the mounting seat (5); a heat sink (7) is accommodated in the mounting cavity (6); a receiving cavity (8) for accommodating a power supply machine (41) is provided on the heat sink (7); a fixing plate (9) is covered on the mounting seat (5); the fixing plate (9) limits the heat sink (7) to a position where the mounting seat (5) is located. The housing (3) is provided with a ventilation hole (11) on the bottom wall and the side wall, the bottom wall of the heat sink (7) is provided with a heat dissipation groove (12), the heat sink (7) is provided with a longitudinal heat dissipation channel (13), the depth direction of the longitudinal heat dissipation channel (13) is the height direction of the heat sink (7), the heat sink (7) is provided with a transverse heat dissipation channel (14), the depth direction of the transverse heat dissipation channel (14) is the length direction of the heat sink (7), and the bottom wall of the mounting seat (5) is provided with a heat dissipation hole (15), the heat dissipation hole (15) is connected with the mounting cavity (6) and the outside of the housing (3).

2. The small fan with high heat dissipation performance according to claim 1, characterized in that: The mounting seat (5) is provided with a limiting assembly (16), the limiting assembly (16) comprising a first limiting block (161) abutting against two sides of the heat sink (7), a second limiting block (162) abutting against two sides of the heat sink (7), and a third limiting block (163) abutting against an end of the heat sink (7), the first limiting block (161) being located at the top of the heat sink (7), the second limiting block (162) being located at the middle of the heat sink (7), and the third limiting block (163) being located at the bottom of the heat sink (7).

3. The small fan with high heat dissipation performance according to claim 2, characterized in that: A rubber pad (17) is provided on the side wall of the accommodating cavity (8), and the rubber pad (17) abuts against the outer wall of the motor (41).

4. The small fan with high heat dissipation performance according to claim 2, characterized in that: The heat sink (7) is a heat-conducting plastic heat sink.

5. The small fan with high heat dissipation performance according to claim 1, characterized in that: The fan assembly (42) comprises a connecting rod (421) coaxially fixed to the output shaft of the motor (41) and a fan blade (422) fixed to the outer wall of the connecting rod (421).

6. The small fan with high heat dissipation performance according to claim 1, characterized in that: The inner shell (2) is provided with a locking screw (21), and the locking screw (21) is used to fix the outer shell (1) to the inner shell (2).

7. The small fan with high heat dissipation performance according to claim 1, characterized in that: The outer wall of the cover body (3) is rotatably connected to a control knob (18), and the control knob (18) is used to control the rotation speed of the motor (41).

8. The small fan with high heat dissipation performance according to claim 1, characterized in that: A supporting foot (19) is fixed on the inner shell (2); when the supporting foot (19) is supported on the ground, the outer shell (1) and the inner shell (2) are tilted upwards towards the direction approaching the cover body (3).

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