CN218407849U

CN218407849U - Low-noise wing-type fan blade type radiating fan

Info

Publication number: CN218407849U
Application number: CN202222370681.3U
Authority: CN
Inventors: 王诤
Original assignee: Hangzhou Winway Electronics Co ltd
Current assignee: Hangzhou Winway Electronics Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-01-31
Anticipated expiration: 2032-09-07

Abstract

The utility model discloses a low noise wing section fan blade formula radiator fan, which comprises a motor, wheel hub, and a housing, the blade, the leeway and the fan housing of making an uproar fall, the inner edge and the wheel hub fixed connection of blade, the outer fringe of blade and the inner circle fixed connection of leeway, the outer lane of leeway is equipped with first water conservancy diversion conical surface, be equipped with on the shell air-out end inside wall with first water conservancy diversion conical surface matched with second water conservancy diversion conical surface, form adverse current wind water conservancy diversion wind channel between first water conservancy diversion conical surface and the second water conservancy diversion conical surface, shell air inlet end central part forms the main inlet air channel with blade matched with, it is equipped with the bypass fresh air inlet and falls the exhaust vent to separate in proper order along the air inlet direction on the shell air inlet end lateral wall, fall the fan housing shroud of making an uproar outside and with the bypass fresh air inlet and fall the exhaust vent of making an uproar and cooperate and form the bypass water conservancy diversion wind channel of making an uproar. The radiating fan is beneficial to inhibiting the vortex noise of the fan, reducing the backflow of the fan and reducing the wind noise by improving the fan air channel.

Description

Low-noise wing-type fan blade type radiating fan

Technical Field

The utility model relates to an axial fan technical field especially relates to a low noise wing section fan blade formula radiator fan.

Background

An axial fan, also called an axial fan, is one of a plurality of fan types, and an axial fan refers to a fan in which air flows in a rotation direction of a shaft on which blades are installed when the fan operates, and the size of the axial fan is different according to different application places and fields. In order to meet the requirement of higher standard heat dissipation performance, the fan speed is usually increased, however, the fan speed is increased, and higher fan noise is also brought, so that the fan structure needs to be improved to reduce the fan noise.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a low noise wing section fan blade formula radiator fan, through improving the fan wind channel, helps restraining fan vortex noise, reduces the fan backward flow, is of value to when increasing the wind speed increase amount of wind, effectively reduces wind and makes an uproar.

The utility model discloses a make above-mentioned technical problem solve through following technical scheme.

The low-noise wing-type fan blade type radiating fan comprises a motor, a hub, a shell, blades, a wind ring and a noise reduction fan cover, wherein the motor is fixed at the center of an air outlet end of the shell and drives the hub to rotate, a plurality of blades are radially arranged on the hub along the circumferential direction, the inner edges of the blades are fixedly connected with the hub, the outer edges of the blades are fixedly connected with an inner ring of the wind ring, a first guide conical surface is arranged on an outer ring of the wind ring, a second guide conical surface matched with the first guide conical surface is arranged on the inner side wall of the air outlet end of the shell, a countercurrent air guide wind channel is formed between the first guide conical surface and the second guide conical surface, a main air inlet channel matched with the blades is formed at the center of an air inlet end of the shell, bypass air inlet holes and noise reduction air outlet holes are sequentially arranged on the side wall of the air inlet end of the shell at intervals along the air inlet direction, and the noise reduction fan cover is covered outside the air inlet end of the shell and matched with the bypass air inlet holes and the noise reduction air outlet holes to form a bypass guide noise reduction wind channel.

Preferably, the blades are LS aerofoil blades.

Preferably, the number of the blades is seven.

Preferably, the blade comprises curved leading and trailing edges, the leading edge leading to the trailing edge from which mainstream wind is directed.

Preferably, the outer edge of the blade is provided with a triangular air guide wing plate extending along the inner ring surface of the wind ring, and the plate body of the triangular air guide wing plate forms a concave arc curved surface facing the direction of the mainstream wind.

Preferably, the wind ring and the triangular wind guide wing plate are integrally formed by injection molding.

Preferably, the hub, the blades and the wind ring are integrally injection molded.

Preferably, the surfaces of the two sides of the blade are respectively a suction curved surface and a pressure curved surface.

The utility model has the advantages that:

1. the first guide conical surface of the outer ring of the wind ring can inhibit the flow of the countercurrent wind to a certain degree, the countercurrent wind guide wind channel is formed between the first guide conical surface and the second guide conical surface on the inner side wall of the shell to provide a guide effect for the countercurrent wind, a small part of main wind enters the bypass noise reduction guide wind channel from the bypass air inlet hole on the side wall of the air inlet end of the shell, and the air is discharged from the noise reduction air outlet hole to enter the countercurrent wind guide wind channel to be smoothly converged with the main wind, so that the interference of the countercurrent wind and the main wind in the vertical direction can be inhibited, the formation of air vortex can be reduced, the wind noise can be effectively reduced while the wind speed is increased and the wind volume is increased.

2. The triangular air guide wing plate is arranged on the blade in an extending mode, the plate body of the triangular air guide wing plate forms a concave arc curved surface towards the wind direction of the main stream wind, and the wind receiving surface of the triangular air guide wing plate is in an outward convex arc shape, so that the diversion countercurrent wind does not interfere with the main stream wind in the vertical direction, the countercurrent wind and the main stream wind are smoothly converged, the formation of air vortex is favorably inhibited, the vortex noise is reduced, and the reduction of the wind volume is avoided.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of an embodiment of the present invention;

fig. 3 is a schematic front view of the noise reduction fan housing and the housing of fig. 1.

In the figure: 1-motor, 2-hub, 3-shell, 4-blade, 5-wind ring, 6-noise reduction fan cover, 7-inner edge, 8-outer edge, 9-first guide conical surface, 10-second guide conical surface, 11-bypass air inlet hole, 12-noise reduction air outlet hole, 13-main air inlet channel, 14-bypass noise reduction guide air channel and 15-triangular wind guide wing plate.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1 to fig. 3, the utility model discloses low noise wing type fan blade formula radiator fan of embodiment, including motor 1, wheel hub 2, shell 3, blade 4, wind circle 5 and the fan housing 6 of making an uproar falls. The motor 1 is fixed at the central part of the air outlet end of the shell 3 and drives the hub 2 to rotate, and a plurality of blades 4 are radially arranged on the hub 2 along the circumferential direction. In the present embodiment, the blades 4 are LS airfoil blades, and the blades 4 are seven. The surfaces of the two sides of the blade 4 are respectively a suction curved surface and a pressure curved surface. The blade 4 comprises a curved leading edge and a trailing edge, from which leading edge the prevailing wind is directed. The inner edge 7 of the blade 4 is fixedly connected with the hub 2, and the outer edge 8 of the blade 4 is fixedly connected with the inner ring of the wind ring 5, for example, the hub 2, the blade 4 and the wind ring 5 are integrally formed by injection molding. Further, the outer edge 8 of the blade 4 is provided with a triangular wind guiding wing plate 15 extending along the inner ring surface of the wind ring 5, and the plate body of the triangular wind guiding wing plate 15 forms a concave arc curved surface facing the main wind direction, for example, the wind ring 5 and the triangular wind guiding wing plate 15 are integrally formed by injection molding.

The outer ring of the air ring 5 is provided with a first flow guiding conical surface 9, the inner side wall of the air outlet end of the shell 3 is provided with a second flow guiding conical surface 10 matched with the first flow guiding conical surface 9, and a countercurrent air flow guiding air channel is formed between the first flow guiding conical surface 9 and the second flow guiding conical surface 10. The central part of the air inlet end of the shell 3 forms a main air inlet channel 13 matched with the blade 4. The fan housing 6 that makes an uproar falls is in 3 air inlet end outsides of shell and with bypass air inlet 11 with fall the exhaust vent 12 that makes an uproar and cooperate and form bypass and fall diversion air duct 14 that makes an uproar along the air inlet direction spaced apart in proper order on the 3 air inlet end lateral walls of shell.

While the invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the claims of the present application belong to the protection scope of the present invention.

Claims

1. Low noise wing section fan blade formula radiator fan, characterized by: including motor (1), wheel hub (2), shell (3), blade (4), leeway (5) and fall fan housing (6) of making an uproar, shell (3) air-out end central part is fixed with motor (1) and drive wheel hub (2) gyration, it has a plurality ofly radially arranged along circumference on wheel hub (2) blade (4), inner edge (7) of blade (4) with wheel hub (2) fixed connection, the outer fringe (8) of blade (4) with the inner circle fixed connection of leeway (5), the outer lane of leeway (5) is equipped with first water conservancy diversion conical surface (9), be equipped with on shell (3) air-out end inside wall with first water conservancy diversion conical surface (9) matched with second water conservancy diversion conical surface (10), first water conservancy diversion conical surface (9) with form upstream water conservancy diversion conical surface between second water conservancy diversion conical surface (10) and fall the wind channel (12) and fall the fan housing (3) air-out bypass side wall be equipped with in proper order along the air-inlet bypass 11) and fall noise reduction wind-inlet bypass (12) and fall noise reduction wind-inlet bypass (3) and fall noise reduction wind-inlet bypass 12) and form upstream air-inlet bypass and fall noise-reduction bypass 12 and fall noise-inlet bypass (12) and fall noise-reduction bypass 12) and fall noise-inlet side bypass 12) .

2. The low noise airfoil fan blade type heat dissipating fan as claimed in claim 1, wherein: the blades (4) are LS airfoil blades.

3. The low noise airfoil fan blade type heat dissipating fan as claimed in claim 2, wherein: the number of the blades (4) is seven.

4. The low noise airfoil fan blade type heat dissipating fan as claimed in claim 1, wherein: the blade (4) comprises a curved leading edge and a trailing edge, from which leading edge the main wind is directed towards the trailing edge.

5. The low noise airfoil fan blade type heat dissipating fan as claimed in claim 1, wherein: the outer edge (8) of the blade (4) extends along the inner ring surface of the wind ring (5) to form a triangular wind guide wing plate (15), and the plate body of the triangular wind guide wing plate (15) forms a concave arc curved surface facing the direction of main wind.

6. The low noise airfoil fan blade type heat dissipating fan according to claim 5, wherein: the air ring (5) and the triangular air guide wing plate (15) are integrally formed by injection molding.

7. The low noise airfoil fan blade type heat dissipating fan as claimed in claim 1, wherein: the hub (2), the blades (4) and the wind ring (5) are integrally formed by injection molding.

8. The low noise airfoil fan blade type heat dissipating fan as claimed in claim 1, wherein: the surfaces of the two sides of the blade (4) are respectively a suction curved surface and a pressure curved surface.