CN218093527U

CN218093527U - Axial flow fan

Info

Publication number: CN218093527U
Application number: CN202222468750.4U
Authority: CN
Inventors: 陈金英; 吕俊达
Original assignee: Shiro Motor Shanghai Co ltd
Current assignee: Shiro Motor Shanghai Co ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2022-12-20
Anticipated expiration: 2032-09-16

Abstract

The utility model relates to an axial fan relates to axial fan technical field, and it includes the dryer, the both sides face of dryer is air intake and air outlet respectively, the inboard of dryer is equipped with flabellum and driving motor, the side that the dryer is close to the air intake is equipped with first protection network and support frame, the side that the dryer is close to the air outlet is equipped with the second protection network, the outside of dryer is equipped with the terminal box, the side that the dryer is close to the air outlet is equipped with and falls the subassembly of making an uproar, it includes the water conservancy diversion circle to fall the subassembly of making an uproar, the outside border department of water conservancy diversion circle is equipped with the turn-ups, the side of dryer is equipped with a plurality of fixed plates that are used for fixed water conservancy diversion circle. The guide ring is arranged on the side face of the air duct, and meanwhile the flanging is arranged on the outer side of the guide ring, so that the swing amplitude of a fluid streamline is reduced in the flowing process of air in the air duct, the noise generated by the working of the fan is reduced, and the noise generated by the axial flow fan in working can be effectively reduced.

Description

Axial flow fan

Technical Field

The application relates to the technical field of axial flow fans, in particular to an axial flow fan.

Background

The fan with large air flow is needed to provide fresh air for buildings or plants, and the fan generally adopts an axial flow fan.

In the related art, the utility model with the publication number CN217206927U comprises a fan frame, the fan frame is provided with a cylindrical shell, a mounting seat is supported in the shell through spokes, the mounting seat is provided with a mounting hole, the side wall of the mounting hole is matched with a fastener penetrating through the side wall, and the inward extending end of the fastener extends into the mounting hole; the axial flow fan comprises a stator assembly and a middle pipe, wherein the stator assembly is supported on the middle pipe, the rotatable axial flow fan impeller is supported on the middle pipe, and a rotor assembly corresponding to the stator assembly is arranged on the axial flow fan impeller.

In the above related art, since the air volume of the axial flow fan is large, turbulence is easily generated. The turbulent flow is a flowing state of fluid, when the flow speed of the turbulent flow is gradually increased, the streamline of the fluid starts to swing in a wavy manner, the frequency and the amplitude of the swing increase along with the increase of the flow speed, noise is further generated, and the noise generated when the axial flow fan with large air volume works is too large.

SUMMERY OF THE UTILITY MODEL

The purpose of this application is to provide an axial fan, solves among the above-mentioned correlation technique axial fan at the too big problem of noise in the course of the work.

The application provides an axial fan adopts following technical scheme:

the utility model provides an axial fan, includes the dryer, the both sides face of dryer is air intake and air outlet respectively, the inboard of dryer is equipped with flabellum and driving motor, the side that the dryer is close to the air intake is equipped with first protection network and support frame, the side that the dryer is close to the air outlet is equipped with the second protection network, the outside of dryer is equipped with the terminal box, the side that the dryer is close to the air outlet is equipped with the subassembly of making an uproar of falling, the subassembly of making an uproar of falling includes the water conservancy diversion circle, the outside border department of water conservancy diversion circle is equipped with the turn-ups, the side of dryer is equipped with a plurality of fixed plates that are used for fixed water conservancy diversion circle.

By adopting the technical scheme, in the working process of the axial flow fan, the guide ring is arranged on the side face of the air duct, and meanwhile, the flanging is arranged on the outer side of the guide ring, so that the swing amplitude of a fluid streamline is reduced in the flowing process of air in the air duct, the noise generated by the working of the fan is reduced, and the noise generated by the axial flow fan in working can be effectively reduced.

Optionally, a convex ring is fixedly arranged on the inner wall of the air duct, and the side face of the flow guide ring close to the air duct is abutted against the side face of the convex ring.

Through adopting above-mentioned technical scheme, fixedly on the inner wall of dryer being provided with the bulge loop, through the setting of bulge loop, the side that the water conservancy diversion circle is close to the air inlet section of thick bamboo is contradicted with the side of bulge loop to this comes to fix water conservancy diversion circle and dryer, further improves the stability of water conservancy diversion circle and dryer equipment.

Optionally, a rubber ring is arranged between the convex ring and the flow guide ring, and a clamping groove for placing the rubber ring is formed in the side face, close to the flow guide ring, of the convex ring.

Through adopting above-mentioned technical scheme, through the setting of rubber circle and draw-in groove, in the installation of water conservancy diversion circle, the inside of draw-in groove is arranged in to the rubber circle, then the installation of water conservancy diversion circle is accomplished the back, and the downside of water conservancy diversion circle is contradicted and is extruded with the surface of rubber circle to this conflict clearance between reduction water conservancy diversion circle and the bulge loop further strengthens the stability that water conservancy diversion circle and wind cylinder are connected.

Optionally, the inside of dryer is equipped with the first sound of inhaling that is located between bulge loop and the air inlet cotton, the first sound of inhaling is cotton with the inside wall fixed connection of dryer.

Through adopting above-mentioned technical scheme, the fixed first sound cotton that inhales that is provided with on the inner wall of dryer, the first sound cotton of inhaling is located between bulge loop and the air inlet simultaneously, inhales the cotton setting of sound through the first sound of inhaling, absorbs the noise that axial fan made the production at work to this further improves axial fan's noise reduction effect.

Optionally, a second sound-absorbing cotton is fixedly arranged between the outer side surface of the flow guide ring and the inner side wall of the air duct.

Through adopting above-mentioned technical scheme, be provided with the second between the lateral surface of water conservancy diversion circle and the inside wall of dryer and inhale the sound cotton, inhale the cotton setting of sound through the second, both reduced the clearance between water conservancy diversion circle lateral surface and the dryer inside wall, improved the installation stability of water conservancy diversion circle, inhale the cotton setting of sound with the second again and further improve axial fan's the performance of making an uproar of falling.

Optionally, the joint of the flanging and the flow guide ring is a fillet.

Through adopting above-mentioned technical scheme, be the radius angle at the juncture of turn-ups and water conservancy diversion circle, more smooth when setting up the distinguished and admirable through the water conservancy diversion circle that makes the fan produce of radius angle to this reduces the swing range of fluid streamline, reduces the noise that fan work made the production.

Optionally, a plurality of the fixing plates are uniformly distributed on the side surface of the air duct close to the flow guide ring.

Through adopting above-mentioned technical scheme, a plurality of fixed plate is at the dryer and is close to the side evenly distributed of water conservancy diversion circle, reduces the not hard up possibility of water conservancy diversion circle appearance in axial fan's course of operation to this makes being connected of water conservancy diversion circle and dryer more stable.

Optionally, a waist-shaped hole is formed in the side surface of the support frame.

By adopting the technical scheme, the waist-shaped holes are formed in the side faces of the supporting frame, the axial flow fan is convenient to fix by means of the waist-shaped holes, the installation fixing time of the axial flow fan is shortened, and the installation efficiency of the axial flow fan is improved.

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

1. in the working process of the axial flow fan, the guide ring is arranged on the side face of the air duct, and meanwhile, the flanging is arranged on the outer side of the guide ring, so that the swing amplitude of a fluid streamline is reduced in the flowing process of air in the air duct, the noise generated by the working of the fan is reduced, and the noise generated by the axial flow fan in working can be effectively reduced.

2. Through the setting of bulge loop, rubber circle and draw-in groove, in the installation of water conservancy diversion circle, the inside of draw-in groove is arranged in to the rubber circle, then the installation of water conservancy diversion circle is accomplished the back, and the downside of water conservancy diversion circle is contradicted and is extruded with the surface of rubber circle to this reduces the conflict clearance between water conservancy diversion circle and the bulge loop, further strengthens the stability that water conservancy diversion circle and wind section of thick bamboo are connected.

3. Through the first cotton setting of inhaling the sound, absorb axial fan and make the noise that produces at work to this further improves axial fan's noise reduction effect. Inhale cotton setting of sound through the second, both reduced the clearance between water conservancy diversion circle lateral surface and the dryer inside wall, improved the installation stability of water conservancy diversion circle, inhale the cotton setting of sound with the second again and further improve axial fan's the performance of making an uproar of falling.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic illustration of an explosive structure of an embodiment of the present application;

FIG. 3 is a schematic cross-sectional structural view of an embodiment of the present application;

fig. 4 is a partially enlarged schematic view of a portion a in fig. 3.

In the figure, 1, a wind tube; 11. an air inlet; 12. an air outlet; 13. a first protection net; 14. a second protective net; 15. a convex ring; 151. a card slot; 16. a rubber ring; 2. a junction box; 3. a fan blade; 4. a drive motor; 5. a support frame; 51. a kidney-shaped hole; 6. a noise reduction assembly; 61. a flow guide ring; 62. flanging; 63. a fixing plate; 64. a first sound absorbing cotton; 65. the second sound-absorbing cotton.

Detailed Description

The present application is described in further detail below with reference to all of the figures.

Example (b):

referring to fig. 1, the axial flow fan comprises an air duct 1, and a junction box 2 is arranged outside the air duct 1.

Referring to fig. 2 and 3, a fan blade 3 and a driving motor 4 are arranged on the inner side of the air duct 1, and a support frame 5 is arranged on the side of the air duct 1. The air inlet 11 and the air outlet 12 are respectively arranged at openings on two side surfaces of the air duct 1, a first protective net 13 is arranged on the side surface of the air duct 1 close to the air inlet 11, a second protective net 14 is arranged on the side surface of the air duct 1 close to the air outlet 12, and the first protective net 13 and the second protective net 14 are fixedly connected with the air duct 1 through bolts.

Referring to fig. 2 and 3, a noise reduction assembly 6 is arranged on the side surface of the air duct 1 close to the air outlet 12, the noise reduction assembly 6 comprises a flow guide ring 61, a flange 62 is arranged at the edge of the outer ring of the flow guide ring 61, and the boundary edge between the flange 62 and the flow guide ring 61 is a rounded corner, so that air can flow smoothly when passing through the air duct; eight fixing plates 63 are arranged on the side face, close to the flow guide ring 61, of the air duct 1, the side edges of the fixing plates 63 are fixedly connected with the air duct 1, and the other side edge of each fixing plate 63 is fixedly connected with the flow guide ring 61 through a bolt. Through the setting of water conservancy diversion circle 61, turn-ups 62 and fixed plate 63, reduce the swing range of fluid streamline, reduce the noise that fan work made the production, can effectively reduce the noise that axial fan produced at the during operation.

Referring to fig. 2, the eight fixing plates 63 are uniformly arranged on the side of the air duct 1 close to the flow guide ring 61, and the flow guide ring 61 is more stably connected with the air duct 1 by the uniform arrangement of the fixing plates 63, so that the condition that the axial flow fan is loosened during working is avoided. The fixed bulge loop 15 that is provided with on dryer 1's the inside wall, the upper surface of bulge loop 15 is contradicted with the downside of water conservancy diversion circle 61, through the setting of bulge loop 15, further improves the stability of water conservancy diversion circle 61 and dryer 1 equipment.

Referring to fig. 3 and 4, rubber ring 16 is arranged between convex ring 15 and guide ring 61, and convex ring 15 is close to and has been offered the draw-in groove 151 that supplies the embedding of rubber ring 16 on the side of guide ring 61, and after the installation of guide ring 61 was accomplished, the downside of guide ring 61 was contradicted and is extruded with the surface of rubber ring 16, and through the setting of rubber ring 16 and draw-in groove 151, the conflict clearance between reduction guide ring 61 and the convex ring 15 further strengthened the stability that guide ring 61 and dryer 1 are connected.

Referring to fig. 3, a first sound absorption cotton 64 is arranged inside the air duct 1, the first sound absorption cotton 64 is located between the convex ring 15 and the air inlet, and the first sound absorption cotton 64 is fixedly connected with the inner side wall of the air duct 1; through the setting of first sound cotton 64 of inhaling, absorb the noise that axial fan made the production at work, improve axial fan's noise reduction effect. Be provided with the second between the lateral surface of water conservancy diversion circle 61 and the inside wall of dryer 1 and inhale cotton 65 of sound, inhale the setting of cotton 65 through the second, further improve axial fan's the performance of making an uproar that gives sound insulation.

Referring to fig. 1, a waist-shaped hole 51 is formed in a side surface of the support frame 5, and the waist-shaped hole 51 is formed, so that the axial flow fan is conveniently fixed, and the installation efficiency of the axial flow fan is improved.

The implementation principle of the embodiment of the application is as follows:

in the installation process of the noise reduction assembly 6 of the axial flow fan, firstly, a first sound absorption cotton 64 is fixed on the inner side of an air duct 1, then a rubber ring 16 is placed in a clamping groove 151 on the side surface of a convex ring 15, then a guide ring 61 is installed on the side surface of the air duct 1, the side surface of a guide groove close to the air duct 1 is abutted against the rubber ring 16, and the other side surface of the guide groove is fixedly connected with the side surface of the air duct 1 through a fixing plate 63; then the second sound-absorbing cotton 65 is fixedly arranged between the outer side surface of the guide ring 61 and the inner side wall of the air duct 1; the installation of the noise reduction assembly 6 is completed. Through installing water conservancy diversion circle 61 in the side of dryer 1, be provided with turn-ups 62 in the outside of water conservancy diversion circle 61 simultaneously, make the flow in-process of wind in dryer 1, reduce the swing range of fluid streamline to this reduces the noise that fan work made the production, can effectively reduce the noise that axial fan produced at the during operation.

The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. Therefore: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An axial flow fan comprises an air duct (1), wherein an air inlet (11) and an air outlet (12) are respectively formed in two side faces of the air duct (1), fan blades (3) and a driving motor (4) are arranged on the inner side of the air duct (1), a first protective net (13) and a support frame (5) are arranged on the side face, close to the air inlet (11), of the air duct (1), a second protective net (14) is arranged on the side face, close to the air outlet (12), of the air duct (1), and a junction box (2) is arranged on the outer side of the air duct (1);

the wind tunnel noise reduction device is characterized in that a noise reduction assembly (6) is arranged on the side face, close to the air outlet (12), of the wind tunnel (1), the noise reduction assembly (6) comprises a flow guide ring (61), a flanging (62) is arranged at the outer edge of the flow guide ring (61), and a plurality of fixing plates (63) used for fixing the flow guide ring (61) are arranged on the side edge of the wind tunnel (1).

2. The axial flow fan according to claim 1, wherein a protruding ring (15) is fixedly arranged on the inner wall of the air duct (1), and the side surface of the flow guide ring (61) close to the air duct (1) is abutted against the side surface of the protruding ring (15).

3. The axial flow fan of claim 2, wherein a rubber ring (16) is disposed between the protruding ring (15) and the flow guide ring (61), and a slot (151) for placing the rubber ring (16) is disposed on a side surface of the protruding ring (15) close to the flow guide ring (61).

4. The axial flow fan according to claim 3, wherein a first sound absorbing cotton (64) is arranged inside the air duct (1) and positioned between the convex ring (15) and the air inlet, and the first sound absorbing cotton (64) is fixedly connected with the inner side wall of the air duct (1).

5. The axial flow fan according to claim 4, wherein a second sound-absorbing cotton (65) is fixedly arranged between the outer side surface of the guide ring (61) and the inner side wall of the air duct (1).

6. The axial flow fan of claim 1, wherein the intersection of the flange (62) and the deflector ring (61) is rounded.

7. The axial fan according to claim 1, wherein a plurality of said fixing plates (63) are uniformly distributed on the side of the air duct (1) close to the guide ring (61).

8. The axial flow fan as claimed in claim 1, wherein the support frame (5) is provided with a kidney-shaped hole (51) at a side thereof.