CN218817186U

CN218817186U - Double-blade fan impeller

Info

Publication number: CN218817186U
Application number: CN202223093483.3U
Authority: CN
Inventors: 邱永亮
Original assignee: Zhongshan Aobaite Metal Industry Co ltd
Current assignee: Zhongshan Aobaite Metal Industry Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-04-07
Anticipated expiration: 2032-11-22

Abstract

The utility model provides a double-blade fan impeller, which comprises a turntable, wherein the turntable is provided with a plurality of first fan blades and a plurality of second fan blades; the center of the rotary table is provided with a shaft hole; the first fan blades are positioned on the front side of the turntable and distributed in a circumferential annular array; the second fan blades are positioned on the reverse side of the turntable and are distributed in a circumferential annular array; the first fan blade and the second fan blade are installed in the same direction, so that the contact area of the first fan blade and the second fan blade with wind is increased, and larger wind flow can be driven; the turntable is provided with a plurality of convex ribs, and the outer wall of one side of each convex rib is connected with the first fan blade; the first fan blade, the plate and the rotary table are more firmly installed, the influence of wind resistance on the first fan blade is reduced, and the fan blade is prevented from being broken when rotating at high speed.

Description

Double-blade fan impeller

Technical Field

The utility model relates to an impeller technical field especially relates to a bilobed fan wheel.

Background

The fan is a machine which increases gas pressure and discharges gas by means of input mechanical energy, generates wind flow by the rotation of the impeller, enables the wind flow to flow in a set direction, and is widely applied to the fields of industrial production and daily life such as aviation, coal, air conditioners and the like. The impeller is a core part of the fan and has the function of converting mechanical energy into static pressure energy and kinetic energy of gas.

CN201921596736.4 discloses an integrated into one piece's impeller, the impeller includes the impeller base member to and set up the blade on the impeller base member, impeller base member center is equipped with the pilot hole, and the blade is equidistant arranges, and the blade includes front end, middle-end and the rear end from the impeller center to the impeller edge in proper order, and the impeller blade height reduces from front end, middle-end to the rear end gradually, and the impeller blade reduces from middle-end to rear end thickness gradually. The impeller is simple in structure and suitable for small air volume equipment. When the wind-driven generator is used, when the wind quantity needs to be increased, the rotating speed is also increased, and at the moment, because the blades are generally made of plastics, the blades are easy to break due to reverse resistance in the high-speed rotating process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the double vane fan wheel who proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a double-blade fan impeller comprises a rotary table, wherein a plurality of first blades and a plurality of second blades are arranged on the rotary table; the center of the rotary table is provided with a shaft hole; the first fan blades are positioned on the front side of the turntable and distributed in a circumferential annular array; the second fan blades are positioned on the reverse side of the rotary table and distributed in a circumferential annular array; a plurality of plates are circumferentially distributed on the circumferential outer wall of the rotary table in an annular array manner, the plates are connected with the first fan blade and the second fan blade, and the plates are respectively vertical to the first fan blade and the second fan blade; the rotary table is provided with a plurality of convex ribs, and the outer wall of one side of each convex rib is connected with the first fan blade.

One end of the first plate is provided with a first guide angle, and the other end of the first plate is provided with a second guide angle.

The width of one end of the plate is smaller than that of the other end of the plate, and a round angle is arranged at the end with the smaller width.

The first fan blade and the second fan blade are both curved in an arc shape in the same direction.

The rotary table is provided with a boss, and the boss and the rotary table are coaxially arranged; the shaft hole is located on the boss.

The first lead angle is connected with the circumference of the boss.

And a plurality of reinforcing ribs are arranged around the shaft hole.

The utility model discloses following beneficial effect has: the front side of the turntable is provided with a first fan blade, the back side of the turntable is provided with a second fan blade, and the air supply quantity can be effectively improved by adopting the structural design of double-sided fan blades; the rotary table is provided with the plate and the convex ribs, so that the influence of wind resistance on the first fan blade can be reduced, and the first fan blade is prevented from being broken when the impeller rotates at a high speed.

Drawings

Fig. 1 is a schematic top perspective view of an embodiment of the present invention.

Fig. 2 is a schematic bottom three-dimensional structure according to an embodiment of the present invention.

Fig. 3 is a schematic view of the wind flow direction according to the embodiment of the present invention.

Reference numbers in the figures: the fan comprises a rotary table 1, a shaft hole 11, a reinforcing rib 11.1, a convex rib 12, a plate 13, a fillet 13.1, a boss 15, a second convex rib 16, a first fan blade 2, a first guide angle 21, a second guide angle 22 and a second fan blade 3.

Detailed Description

As shown in fig. 1-3, a double-blade fan impeller is installed in a fan, and is used for generating wind flow by rotation to enable wind to flow in the same direction, and includes a rotating disk 1, wherein the rotating disk 1 is provided with a plurality of first blades 2 and a plurality of second blades 3, a shaft hole 11 is arranged at the center of the rotating disk 1, and a motor shaft on the fan penetrates through the shaft hole 11 to enable the rotating disk 1 to be installed in the fan in a rotatable manner. The first fan blades 2 and the second fan blades 3 are located on the rotary table 1 and distributed on the rotary table 1 in a circumferential annular array mode. In order to increase the air supply amount, the first fan blade 2 and the second fan blade 3 are respectively perpendicular to the turntable 1, specifically, the first fan blade 2 is located on the front side of the turntable 1, the second fan blade 3 is located on the back side of the turntable 1, and the first fan blade 2 and the second fan blade 3 are arranged in a vertically corresponding manner, so that the area of the fan is increased, and the air supply amount is increased.

As shown in fig. 1, because the fan surface of the first fan blade 2 is relatively large, in other words, the wind resistance received by the first fan blade 2 is relatively large, when the rotary table 1 rotates rapidly, the huge wind resistance easily causes the situation that the first fan blade 2 is broken, therefore, a plurality of convex ribs 12 are arranged on the rotary table 1, the convex ribs 12 are in a triangular shape, the outer wall of one side of each convex rib 12 is connected with the first fan blade 2 and used for consolidating and supporting the first fan blade 2, so that the connection between the first fan blade 2 and the rotary table 1 is firmer, and therefore, when the rotary table 1 rotates rapidly to generate the wind resistance, the first fan blade 2 is not easy to break.

As shown in fig. 1 and 2, a plurality of plates 13 are circumferentially and annularly arrayed on the circumferential outer wall of the turntable 1, and the plates 13 are connected with the first fan blade 2 and the second fan blade 3, are perpendicular to the first fan blade 2 and the second fan blade 3, and are used for supporting and reinforcing the first fan blade 2 and the second fan blade 3. Specifically, the plate 13 is located on the right side of the first fan blade 2 and the second fan blade 3, and the outer end of the plate 13 is flush with the outer ends of the first fan blade 2 and the second fan blade 3, so that the whole first fan blade 2 and the whole second fan blade 3 are reinforced.

As shown in fig. 1 to fig. 3, in order to further enhance the stability of the first fan blade 2, a first guide angle 21 is provided at one end of the first fan blade 2, and a second guide angle 22 is provided at the other end. Specifically, one end of the first fan blade 2, which is provided with the first guide angle 21, is in a Z shape. The first guide angle 21 and the second guide angle 22 are used for guiding wind flow, so that when the rotary table 1 rotates, wind flows along the first guide angle 21 and the second guide angle 22, the thrust of wind resistance to the first fan blade 2 is reduced, and the situation that the first fan blade 2 is broken in the rotating process of the rotary table 1 is avoided.

In order to reduce wind resistance, the width of one end of the plate 13 is smaller than that of the other end, so that one side of the plate 13 inclines inwards. Specifically, when the rotary table 1 rotates, the inward inclined side of the plate 13 is a windward side, and wind flows outwards along the outward inclined side of the plate 13, so that disturbance to wind flow is reduced. In order to further reduce the wind resistance, the end with the smaller width is provided with a rounded corner 13.1.

In order to make carousel 1 rotate the during operation, the faster toward outer circumference circulation of wind current, first fan blade 2 with second fan blade 3 all is "arc" setting, and all is towards same direction arc bending, makes the wind current flow toward the periphery along the cambered surface of first fan blade 2 and second fan blade 3.

In order to make the structure of the turntable more three-dimensional and firmer, a boss 15 is arranged on the turntable 1, and the boss 15 is coaxially arranged with the turntable 1 and protrudes upwards. Shaft hole 11 is located on boss 15, be equipped with a plurality of strengthening ribs 11.1 around shaft hole 11, make the fan motor shaft pass 11 drives in the shaft hole during carousel 1, avoid because torsion is too big that carousel 1 tears.

In order to enable the first fan blade 2 to be connected with the rotary table 1 more firmly and prevent stronger wind resistance, the root of the first fan blade 2 is connected with the circumference of the boss 15.

In this embodiment, the impeller of the double-blade fan is made of plastic by integral molding, in other words, the rotary table 1, the first blade 2, the second blade 3, the shaft hole 11, the convex rib 12, the plate 13 and the reinforcing rib 11.1 are integrally molded.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that certain features may be substituted in the embodiments or modified in some cases.

Claims

1. A double-blade fan impeller is characterized by comprising a rotary table (1), wherein a plurality of first fan blades (2) and a plurality of second fan blades (3) are arranged on the rotary table (1); a shaft hole (11) is formed in the center of the turntable (1); the first fan blades (2) are positioned on the front surface of the turntable (1) and are distributed in a circumferential annular array; the second fan blades (3) are positioned on the reverse side of the rotary table (1) and are distributed in a circumferential annular array; a plurality of plates (13) are circumferentially distributed on the circumferential outer wall of the rotary table (1) in an annular array manner, the plates (13) are connected with the first fan blade (2) and the second fan blade (3), and the plates (13) are respectively vertical to the first fan blade (2) and the second fan blade (3); the fan blade is characterized in that a plurality of convex ribs (12) are arranged on the rotary table (1), and the outer wall of one side of each convex rib (12) is connected with the corresponding first fan blade (2).

2. The double-bladed fan wheel according to claim 1, characterised in that one end of the first blades (2) is provided with a first lead angle (21) and the other end with a second lead angle (22).

3. Double-bladed fan wheel according to claim 1, characterised in that the plates (13) have one end with a width smaller than the other end, and the end with the smaller width is provided with rounded corners (13.1).

4. The double-bladed fan wheel according to claim 1, characterized in that said first blades (2) and said second blades (3) are curved arcuately in the same direction.

5. The double-bladed fan impeller according to claim 2, characterized in that on said carousel (1) there are provided bosses (15), said bosses (15) being arranged coaxially with said carousel (1); the shaft hole (11) is positioned on the boss (15).

6. Double-bladed fan wheel according to claim 5, characterised in that said second lead angle (22) is connected with the circumference of said boss (15).

7. A two-bladed fan impeller according to claim 1, characterised in that around said axial hole (11) there are several reinforcing ribs (11.1).