CN217233838U

CN217233838U - Air quantity enhanced axial flow fan

Info

Publication number: CN217233838U
Application number: CN202220016691.4U
Authority: CN
Inventors: 王诤
Original assignee: Hangzhou Winway Electronics Co ltd
Current assignee: Hangzhou Winway Electronics Co ltd
Priority date: 2022-01-05
Filing date: 2022-01-05
Publication date: 2022-08-19
Anticipated expiration: 2032-01-05

Abstract

The utility model discloses an amount of wind enhancement mode axial fan, which comprises a motor, wheel hub, and a housing, blade and wind circle, be fixed with the motor on the shell and drive wheel hub gyration, wheel hub is last to be radial and has arranged three blades along circumference, the inner edge and the wheel hub rigid coupling of blade, the outer fringe of blade and the inner circle rigid coupling of wind circle, the inner edge extends to the outer fringe along radially outwards expanding the formula outward, the blade is equipped with indent arc leading edge and sharp form trailing edge, sharp form trailing edge outside end joins with the rear end portion of outer fringe, sharp form trailing edge medial extremity towards indent arc leading edge bending type and form the trailing edge extension and join with the rear end portion of inner edge, sharp form on the trailing edge and fall the sawtooth of making an uproar, be the obtuse angle between sharp form trailing edge and the trailing edge extension. The utility model discloses an optimize the fan structure, can strengthen the amount of wind, be of value to simultaneously and restrain fan vortex noise, reduce wind and make an uproar.

Description

Air quantity enhanced axial flow fan

Technical Field

The utility model relates to an axial fan technical field especially relates to an amount of wind enhancement mode axial 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 an amount of wind enhancement mode axial fan, through optimizing the fan structure, can strengthen the amount of wind, is of value to simultaneously and suppresses fan vortex noise, reduces wind noise.

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

The air quantity enhanced axial flow fan comprises a motor, a hub, a shell, blades and a wind ring, wherein the shell is fixedly provided with the motor and drives the hub to rotate, three 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 the inner ring of the wind ring, the inner edges extend to the outer edges in a manner of expanding outwards along the radial direction, the blades are provided with an inwards concave arc-shaped front edge and a linear rear edge, the outer side end of the linear rear edge is connected with the rear side end of the outer edge in a converging manner, the inner side end of the linear rear edge faces the inwards concave arc-shaped front edge in a bending manner to form a rear edge extending part and is connected with the rear side end of the inner edges in a converging manner, noise reduction sawteeth are arranged on the linear rear edge, and an obtuse angle is formed between the linear rear edge extending part and the linear rear edge.

Preferably, an inner guide conical surface is arranged on the outer ring of the air ring, an outer guide conical surface matched with the inner guide conical surface is arranged on the inner side wall of the shell, and a countercurrent air guide air channel is formed between the inner guide conical surface and the outer guide conical surface.

Preferably, the linear trailing edge length is at least four times the trailing edge extension length.

Preferably, the obtuse angle is 120 to 145 degrees.

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

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

Preferably, the hub outer diameter is 100mm to 280 mm.

Preferably, the hub, the shell, the blades and the wind ring are all of PC, PE or ABS material structures.

Preferably, orthographic projections of the three blades in the axial direction do not overlap each other.

The utility model has the advantages that:

through forming the straight line shape trailing edge with the blade, and make the straight line shape trailing edge outside end and the rear end portion of outer fringe converge to be connected, the trailing edge extension that the straight line shape trailing edge medial extremity was buckled to form towards indent arc leading edge converges with the rear end portion of inner edge and is connected, the trailing edge of blade forms the indent portion at the end that is close to wheel hub like this, air-out efficiency has been improved greatly, the air output has been strengthened, and, the straight line shape trailing edge is equipped with the sawtooth of making an uproar that falls, help reducing the turbulent flow noise that takes place on the blade, reduce the wind cutting sound that the blade gyration produced, reduce wind and make an uproar. The air ring outer ring is provided with an inner guide conical surface, an outer guide conical surface and an inner guide conical surface, wherein the inner guide conical surface is arranged on the outer side wall of the air ring, the inner guide conical surface is provided with an air guide channel, the air guide channel is formed between the air guide conical surface and the outer guide conical surface on the inner side wall of the shell, and the air guide channel is used for providing a guide effect for countercurrent air.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

fig. 2 is a front view of the structure of fig. 1 with the outer shell removed.

Description of reference numerals: 1-motor, 2-hub, 3-shell, 4-blade, 5-wind ring, 6-inner edge, 7-outer edge, 8-concave arc front edge, 9-straight rear edge, 10-rear edge extension, 11-noise reduction sawtooth, 12-inner flow guide conical surface and 13-outer flow guide conical surface.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and fig. 2, the air volume enhanced axial fan of the embodiment of the present invention includes a motor 1, a hub 2, a housing 3, blades 4 and a wind ring 5. The motor 1 is fixed on the shell 3 and drives the hub 2 to rotate, the outer diameter of the hub 2 is 100mm to 280mm, three blades 4 are radially arranged on the hub 2 along the circumferential direction, and specifically, orthographic projections of the three blades 4 along the axial lead direction are not overlapped with each other. For example, the hub 2, the housing 3, the blades 4 and the wind ring 5 are all made of PC, PE or ABS material, and further, the hub 2, the blades 4 and the wind ring 5 are integrally formed by injection molding. The surfaces of the two sides of the blade 4 are respectively a suction curved surface and a pressure curved surface. The inner edge 6 of the blade 4 is fixedly connected with the hub 2, and the outer edge 7 of the blade 4 is fixedly connected with the inner ring of the wind ring 5. The inner edge 6 extends outwards in the radial direction to the outer edge 7 in an expanding manner, the blade 4 is provided with an inwards concave arc-shaped front edge 8 and a linear rear edge 9, the outer side end of the linear rear edge 9 is connected with the rear side end of the outer edge 7 in a converging manner, the inner side end of the linear rear edge 9 bends towards the inwards concave arc-shaped front edge 8 to form a rear edge extension part 10 and is connected with the rear side end of the inner edge 6 in a converging manner, and further, the length of the linear rear edge 9 is at least four times that of the rear edge extension part 10. And the straight rear edge 9 is provided with noise reduction sawteeth 11. The straight trailing edge 9 and the trailing edge extension 10 form an obtuse angle, specifically, the obtuse angle is 120 degrees to 145 degrees. An inner guide conical surface 12 is arranged on the outer ring of the air ring 5, an outer guide conical surface 13 matched with the inner guide conical surface 12 is arranged on the inner side wall of the shell 3, and a countercurrent air guide air channel is formed between the inner guide conical surface 12 and the outer guide conical surface 13.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. Air volume enhancement type axial flow fan is characterized in that: including motor (1), wheel hub (2), shell (3), blade (4) and wind circle (5), be fixed with on shell (3) motor (1) and drive wheel hub (2) gyration, wheel hub (2) are gone up radially and have been arranged three along circumference blade (4), inner edge (6) of blade (4) with wheel hub (2) rigid coupling, outer fringe (7) of blade (4) with the inner circle rigid coupling of wind circle (5), inner edge (6) radially outwards expand the formula extend to outer fringe (7), blade (4) are equipped with indent arc leading edge (8) and straight line form trailing edge (9), straight line form trailing edge (9) outside end with the rear end portion of outer fringe (7) joins, straight line form trailing edge (9) medial extremity orientation indent arc leading edge (8) are buckled and are formed trailing edge extension (10) and with the rear end portion of inner edge (6) joins and is connected, the straight line-shaped rear edge (9) is provided with noise reduction sawteeth (11), and an obtuse angle is formed between the straight line-shaped rear edge (9) and the rear edge extension part (10).

2. The airflow rate enhanced axial flow fan according to claim 1, wherein: an inner diversion conical surface (12) is arranged on the outer ring of the air ring (5), an outer diversion conical surface (13) matched with the inner diversion conical surface (12) is arranged on the inner side wall of the shell (3), and a countercurrent air diversion air channel is formed between the inner diversion conical surface (12) and the outer diversion conical surface (13).

3. The airflow rate enhanced axial flow fan according to claim 1, wherein: the linear trailing edge (9) has a length at least four times the length of the trailing edge extension (10).

4. The airflow rate enhanced axial flow fan according to claim 1, wherein: the obtuse angle is 120 to 145 degrees.

5. The airflow rate enhanced axial flow fan according to claim 1, wherein: the surfaces of the two sides of the blade (4) are respectively a suction curved surface and a pressure curved surface.

6. The airflow rate enhanced axial flow fan according to claim 1, wherein: the hub (2), the blades (4) and the wind ring (5) are integrally formed by injection molding.

7. The enhanced air volume axial flow fan according to claim 1, wherein: the outer diameter of the hub (2) is 100mm to 280 mm.

8. The airflow rate enhanced axial flow fan according to claim 1, wherein: the hub (2), the shell (3), the blades (4) and the wind ring (5) are all of PC, PE or ABS material structures.

9. The airflow rate enhanced axial flow fan according to claim 1, wherein: the orthographic projections of the three blades (4) along the axial lead direction are not overlapped.