Large-air-volume cooling fan impeller

Abstract

The utility model relates to the technical field of fan impellers, in particular to a large-air-volume cooling fan impeller which comprises an outer frame, a supporting frame is fixedly connected to the inner wall of the outer frame, a base is fixedly connected to the middle of the supporting frame, a fan base is rotationally connected to the base, a driving assembly is fixedly connected between the base and the fan base, and a plurality of sets of fan blades are fixedly connected to the side wall of the fan base in an inclined mode. The multiple sets of fan blades are arranged in a circumferential array mode, the tail portions of the fan blades are fixedly connected with the side wall of the fan base, the included angle between the tail portions of the fan blades and the side wall of the fan base is 30-60 degrees, the width of the tip portions of the fan blades is larger than that of the tail portions of the fan blades, and the tip portions of the fan blades are in a fillet shape. The fan blades are obliquely and fixedly connected with the side wall of the fan seat, and the included angle between the tail parts of the fan blades and the side wall of the fan seat is an acute angle, so that the fan blades sweep forwards, the effective length of the fan blades is increased, the width of the tip parts of the fan blades is increased, and the windward quantity of the fan blades is improved, and the air quantity generated by rotation of the impeller is improved.

Description

Technical Field

[0001] The utility model relates to the field of fan impellers, in particular to a large air volume heat dissipation fan impeller. Background Art

[0002] The cooling fan drives the surrounding air to flow, so that the flowing air drives the heat to dissipate. The faster the air flows, the better the heat dissipation effect. Therefore, the air volume of the fan affects the heat dissipation effect. The air volume is determined by factors such as the rotation speed and structure of the fan impeller.

[0003] Existing large-air-volume cooling fan impellers, such as a fan impeller with a guide cover proposed in patent application number "CN201920645064.5", concentrate most of the airflow in the forward direction through structures such as the guide cover, blades, and a hub.

[0004] However, the blade length of the impeller needs to be increased, and the blade structure of the impeller also needs to be improved. By improving the blade length and the blade structure, the air volume of the cooling fan can be increased, thereby improving the cooling effect of the cooling fan. Therefore, a cooling fan impeller with a large air volume is proposed. Utility Model Content

[0005] The utility model aims to provide a large air volume heat dissipation fan impeller to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A large air volume heat dissipation fan impeller comprises an outer frame, an inner wall of the outer frame is fixedly connected to a support frame, a base is fixedly connected to the middle of the support frame, a fan seat is rotatably connected to the base, and a driving component is fixedly connected between the base and the fan seat;

[0008] The fan seat side wall is inclined and fixed with multiple groups of fan blades, which are arranged in a circular array. The tail of the fan blade is fixed to the fan seat side wall, and the angle between the tail of the fan blade and the fan seat side wall is set to 30-60 degrees. The width of the tip of the fan blade is greater than the width of the tail of the fan blade, and the tip of the fan blade is set to a rounded shape.

[0009] Preferably, the tail of the fan blade includes an upper fixing point and a lower fixing point, both of which are fixedly connected to the side wall of the fan base, and the upper fixing point is located on one side of the lower fixing point, forming a windward area in the middle of the fan blade.

[0010] Preferably, the tip of the fan blade includes a wind gathering point and a wind blowing point. The wind gathering point is on the same side as the upper fixed point, and the wind blowing point is on the same side as the lower fixed point. A wind gathering area is formed between the wind gathering point and the wind blowing point, and the wind gathering area is smoothly connected to the windward area via an arc surface.

[0011] Preferably, the driving assembly includes a circuit board, which is fixed to the base, a fixing sleeve fixed to the circuit board, a coil assembly fixed inside the fixing sleeve, an axle seat fixed to the middle of the base, the axle seat is located inside the coil assembly, a rotating shaft is fixed inside the fan seat, and the rotating shaft is rotatably connected to the axle seat.

[0012] Preferably, a magnetic sleeve is fixedly connected to the inner wall of the fan seat, a magnetic ring is fixedly connected to the inner wall of the magnetic sleeve, the magnetic ring and the coil assembly are magnetically matched, and an electric pole is fixedly connected to one end of the fixed sleeve, and the electric pole is electrically connected to the circuit board.

[0013] Preferably, a wear-resistant sheet is fixedly connected to the inner wall of the shaft seat, the wear-resistant sheet cooperates with the end of the rotating shaft, a buckle plate is clamped in the shaft seat, the buckle plate is clamped and cooperates with the rotating shaft, and a mounting block is fixedly connected to the side wall of the outer frame.

[0014] Beneficial effects of the utility model:

[0015] The utility model makes the fan blades be swept forward, increases the effective length of the fan blades, increases the width of the tip of the fan blades, increases the amount of wind facing the fan blades, and thus increases the amount of wind generated by the rotation of the impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall front structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall back structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the base of the utility model;

[0020] The reference numerals in the figures are as follows:

[0021] 1. Outer frame; 2. Support frame; 3. Base; 6. Fan seat; 7. Fan blade; 71. Wind gathering point; 72. Wind blowing point; 73. Wind gathering area; 74. Windward area; 75. Upper fixing point; 76. Lower fixing point; 8. Shaft seat; 9. Wear-resistant sheet; 10. Rotating shaft; 11. Buckle plate; 13. Fixed sleeve; 15. Coil assembly; 16. Electric pole; 17. Magnetic ring; 18. Magnetic sleeve; 19. Circuit board; 20. Mounting block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] A large air volume cooling fan impeller, such as Figure 1-Figure 3 As shown, it comprises an outer frame 1, a support frame 2 is fixedly connected to the inner wall of the outer frame 1, a base 3 is fixedly connected to the middle of the support frame 2, a fan seat 6 is rotatably connected to the base 3, and a driving assembly is fixedly connected between the base 3 and the fan seat 6;

[0024] The fan seat 6 has a plurality of groups of fan blades 7 fixedly connected at an angle, and the plurality of fan blades 7 are arranged in a circular array. The tail of the fan blade 7 is fixedly connected to the side wall of the fan seat 6, and the angle between the tail of the fan blade 7 and the side wall of the fan seat 6 is set to 30-60 degrees. The tip width of the fan blade 7 is greater than the tail width of the fan blade 7, and the tip of the fan blade 7 is set to a rounded shape.

[0025] The fan frame is formed by the outer frame 1, the support frame 2 and the base 3. The driving component is powered on to control the rotation of the fan seat 6, so that the fan seat 6 drives the fan blade 7 to rotate, driving the surrounding air flow. The straight-line distance between the side wall of the fan seat 6 and the inner wall of the outer frame 1 is a. The fan blade 7 is tilted and fixed to the side wall of the fan seat 6 so that the length of the fan blade 7 is greater than a. Within the limited area of ​​the outer frame 1, the effective length of the fan blade 7 is increased, and the angle between the tail of the fan blade 7 and the side wall of the fan seat 6 (such as Figure 1 The angle A) in the middle is set to an acute angle, so that the fan blade 7 is swept forward and the width of the tip of the fan blade 7 is increased (ensuring that the windward angle is greater than 30 degrees), thereby increasing the windward amount of the fan blade 7, thereby increasing the air volume generated by the rotation of the impeller and improving the heat dissipation effect of the cooling fan. The rounded tip of the fan blade 7 can reduce the wear on the end of the fan blade 7.

[0026] The tail of the fan blade 7 includes an upper fixing point 75 and a lower fixing point 76. The upper fixing point 75 and the lower fixing point 76 are both fixedly connected to the side wall of the fan base 6, and the upper fixing point 75 is located on one side of the lower fixing point 76. The middle part of the fan blade 7 forms a windward area 74.

[0027] like Figure 1 and Figure 3 As shown, the upper fixing point 75 and the lower fixing point 76 are on the side wall of the shaft seat 8, and the two are not on a vertical line, so that the tail of the fan blade 7 is tilted and fixed to the side wall of the fan seat 6, and the windward area 74 in the middle of the fan blade 7 faces the wind when the fan blade 7 rotates, promoting air flow.

[0028] The tip of the fan blade 7 includes a wind gathering point 71 and a wind blowing point 72. The wind gathering point 71 is on the same side as the upper fixed point 75, and the wind blowing point 72 is on the same side as the lower fixed point 76. A wind gathering area 73 is formed between the wind gathering point 71 and the wind blowing point 72, and the wind gathering area 73 is smoothly connected to the windward area 74 via an arc surface.

[0029] like Figure 1-Figure 3 As shown, the wind gathering point 71, the wind blowing point 72 and the wind gathering area 73 not only increase the wind volume generated by the rotation of the fan blade 7, but also can reduce noise. The wind gathering area 73 and the windward area 74 are smoothly connected to integrate the fan blade 7.

[0030] The driving assembly includes a circuit board 19, which is fixedly connected to the base 3. A fixing sleeve 13 is fixedly connected to the circuit board 19, and a coil assembly 15 is fixedly connected to the fixing sleeve 13. A shaft seat 8 is fixedly connected to the middle of the base 3, and the shaft seat 8 is located inside the coil assembly 15. A rotating shaft 10 is fixedly connected to the inside of the fan seat 6, and the rotating shaft 10 is rotatably connected to the shaft seat 8.

[0031] like Figure 3 As shown, the circuit board 19 is energized, so that the coil assembly 15 is energized, the coil assembly 15 is in a stationary state relative to the shaft seat 8, and the fan seat 6 rotates smoothly on the shaft seat 8 relying on the rotating shaft 10.

[0032] The inner wall of the fan seat 6 is fixed with a magnetic sleeve 18 , the inner wall of the magnetic sleeve 18 is fixed with a magnetic ring 17 , the magnetic ring 17 and the coil assembly 15 are magnetically matched, and one end of the fixed sleeve 13 is fixed with a connecting rod 16 , which is electrically connected to the circuit board 19 .

[0033] like Figure 3 As shown, the coil assembly 15 is energized via the power rod 16, and the coil assembly 15 is energized to drive the magnetic ring 17 to rotate, so that the magnetic ring 17 drives the shaft seat 8 to rotate via the magnetic sleeve 18, thereby driving the fan to operate.

[0034] The inner wall of the shaft seat 8 is fixedly connected with a wear-resistant sheet 9, which cooperates with the end of the rotating shaft 10. A buckle plate 11 is clamped in the shaft seat 8, which is clamped with the rotating shaft 10. A mounting block 20 is fixedly connected to the side wall of the outer frame 1.

[0035] like Figure 3 As shown, the wear-resistant sheet 9 prevents the rotating shaft 10 from rotating and damaging the inside of the shaft seat 8, the buckle plate 11 prevents the rotating shaft 10 from separating from the shaft seat 8, and the mounting block 20 facilitates the installation of the cooling fan.

[0036] The working principle of a large air volume heat dissipation fan impeller provided by the utility model is as follows:

[0037] The fan frame is formed by the outer frame 1, the support frame 2 and the base 3. The driving component is energized to control the rotation of the fan seat 6, so that the fan seat 6 drives the fan blades 7 to rotate, driving the surrounding air to flow. Within the limited area of ​​the outer frame 1, the effective length of the fan blades 7 is increased, the fan blades 7 are swept forward, and the width of the tip of the fan blades 7 is increased, the amount of wind facing the fan blades 7 is increased, thereby increasing the amount of air generated by the rotation of the impeller and improving the heat dissipation effect of the heat dissipation fan.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A large air volume heat dissipation fan impeller, comprising an outer frame (1), characterized in that: The inner wall of the outer frame (1) is fixedly connected to a support frame (2), the middle of the support frame (2) is fixedly connected to a base (3), a fan seat (6) is rotatably connected to the base (3), and a driving assembly is fixedly connected between the base (3) and the fan seat (6); The fan seat (6) has a plurality of groups of fan blades (7) fixedly connected at an angle to the side wall thereof, the plurality of groups of fan blades (7) being arranged in a circular array, the tail of the fan blade (7) being fixedly connected to the side wall of the fan seat (6), and the angle between the tail of the fan blade (7) and the side wall of the fan seat (6) being set at 30-60 degrees, the tip width of the fan blade (7) being greater than the tail width of the fan blade (7), and the tip of the fan blade (7) being set in a rounded shape.

2. A large air volume heat dissipation fan impeller according to claim 1, characterized in that: The tail of the blade (7) comprises an upper fixing point (75) and a lower fixing point (76), the upper fixing point (75) and the lower fixing point (76) are both fixedly connected to the side wall of the blade seat (6), and the upper fixing point (75) is located on one side of the lower fixing point (76), and the middle part of the blade (7) forms a windward area (74).

3. A large air volume heat dissipation fan impeller according to claim 2, characterized in that: The tip of the fan blade (7) comprises a wind gathering point (71) and a wind blowing point (72); the wind gathering point (71) is on the same side as the upper fixing point (75); the wind blowing point (72) is on the same side as the lower fixing point (76); a wind gathering area (73) is formed between the wind gathering point (71) and the wind blowing point (72); and the wind gathering area (73) and the windward area (74) are smoothly connected via an arc surface.

4. A large air volume heat dissipation fan impeller according to claim 1, characterized in that: The driving assembly comprises a circuit board (19), the circuit board (19) is fixedly connected to the base (3), a fixing sleeve (13) is fixedly connected to the circuit board (19), a coil assembly (15) is fixedly connected inside the fixing sleeve (13), a shaft seat (8) is fixedly connected to the middle of the base (3), the shaft seat (8) is located inside the coil assembly (15), a rotating shaft (10) is fixedly connected inside the fan seat (6), and the rotating shaft (10) is rotatably connected inside the shaft seat (8).

5. A large air volume heat dissipation fan impeller according to claim 4, characterized in that: The inner wall of the fan seat (6) is fixedly connected with a magnetic sleeve (18), the inner wall of the magnetic sleeve (18) is fixedly connected with a magnetic ring (17), the magnetic ring (17) and the coil assembly (15) are magnetically matched, and one end of the fixed sleeve (13) is fixedly connected with an electric pole (16), and the electric pole (16) is electrically connected to the circuit board (19).

6. A large air volume heat dissipation fan impeller according to claim 5, characterized in that: The inner wall of the shaft seat (8) is fixedly connected with a wear-resistant sheet (9), the wear-resistant sheet (9) cooperates with the end of the rotating shaft (10), a buckle plate (11) is clamped inside the shaft seat (8), the buckle plate (11) is clamped and cooperates with the rotating shaft (10), and a mounting block (20) is fixedly connected to the side wall of the outer frame (1).

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