Axial flow fan with sound absorption and noise reduction assembly

Abstract

The invention relates to the technical field of axial flow fans, in particular to an axial flow fan with a sound absorption and noise reduction assembly, the axial flow fan comprises a shell, a mute motor and mute fan blades, the mute fan blades are fixedly installed at the output end of the mute motor, a strip-shaped plate, a sound absorption plate and a sound absorption cotton layer with holes are inserted into the shell, a limiting column enters the shell by extruding a first spring, and the mute motor drives the mute fan blades to rotate. When a limiting column moves to the inner side of a limiting hole, the limiting column is pushed into the limiting hole under the counter-acting force of a first spring, meanwhile, a fixing plate is attached to the side wall of one end of a shell, one end of a screw penetrates through a round hole and then is in threaded connection with a threaded hole, and a sound absorption plate, a sound absorption cotton layer with holes, a mute motor and mute fan blades are fixed; when the fan works, the sound absorption plate and the sound absorption cotton layer with the holes absorb aerodynamic noise, the turbulent flow rods and the turbulent flow blades interfere with air flow, the aerodynamic noise is reduced, and the noise generated when the fan works is reduced through the buffering and fixing component.

Description

Technical Field

[0001] The present invention relates to the technical field of axial flow fans, and in particular to an axial flow fan with a sound absorbing and noise reducing component. Background Art

[0002] Axial flow fan, also known as axial flow blower, is one of many types of fans. Axial flow fan refers to a fan in which the air flows in the direction of rotation of the axis on which the fan blades are installed when the fan is working. The size of axial flow fans varies depending on the place and field of application.

[0003] In the prior art, axial flow fans are widely used in household appliances, office equipment, industrial equipment for cooling, ventilation and air conditioning, etc. They can also be used in hair dryers for automobiles. Axial flow fans are commonly used in automobile cooling systems. As automobile power continues to improve, heat dissipation requirements are also increasing. In order to achieve higher heat dissipation performance requirements, it is often necessary to increase the fan speed. However, since the increase in fan speed greatly increases the fan noise, the driver is in a high noise environment for a long time, which is prone to adverse reactions such as irritability or inattention. To this end, the present invention proposes an axial flow fan with a sound absorption and noise reduction component to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide an axial flow fan with a sound absorbing and noise reducing component to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an axial flow fan with a sound absorption and noise reduction component, comprising: a housing, a silent motor and silent fan blades, wherein the silent fan blades are fixedly mounted on the output end of the silent motor, the silent motor and the silent fan blades are located in the housing, a sound absorbing board and a sound absorbing cotton layer with holes are mounted on the inner end of the housing, and a sound absorbing cavity is arranged between the sound absorbing board and the sound absorbing cotton layer with holes; A fixing plate is fixedly installed at one end of the shell by screws, a plurality of spoiler rods are evenly fixedly installed at the outer end of the fixing plate, the inner end of the spoiler rod is fixedly installed on the outer end side wall of the silent motor, the other end of the shell is rotatably connected to a rotating ring through a bearing, a plurality of spoiler blades are evenly fixedly installed at the inner end of the rotating ring, and a buffer fixing component is provided on the outer wall of one end of the shell.

[0006] Preferably, the fixing plate is in an annular shape, the outer end of the fixing plate is flush with the outer end of the shell, the inner end of the fixing plate is flush with the inner end of the perforated sound-absorbing cotton layer, and a plurality of circular holes are evenly opened on the side wall of the fixing plate.

[0007] Preferably, the sound-absorbing panel is arc-shaped and is provided with several pieces, a strip plate is fixedly installed between two adjacent sound-absorbing panels, one end of the strip plate is fixedly connected to the inner end of the fixed plate, and fixing rings are fixedly installed on the inner ends of the left and right sides of the several strip plates, and the perforated sound-absorbing cotton layer is fixedly installed on the inner ends of the two fixing rings.

[0008] Preferably, a plurality of limit holes are evenly provided on the inner walls at the left and right ends of the shell, and a slide groove is provided on the outer ends of the left and right sides of each strip plate, and a limit column is slidably connected in the slide groove, and a spring 1 is fixedly installed at the lower end of the limit column, and the lower end of the spring 1 is fixedly installed on the inner wall at the bottom end of the slide groove. When the strip plate is inserted into the shell, the upper end of the limit column is inserted into the limit hole, and at this time, the spring 1 is in a balanced state.

[0009] Preferably, a plurality of threaded holes are evenly formed at one end of the shell, and when the fixing plate is attached to one end of the shell, the round hole can be connected with the threaded hole, and one end of the screw passes through the round hole and is threadedly connected with the inner wall of the threaded hole.

[0010] Preferably, the outer wall of the bearing is fixedly mounted on the inner end of the housing, and the inner wall of the bearing and the outer end of the rotating ring are fixedly connected.

[0011] Preferably, the buffer fixing component includes a plurality of arc plates, which are evenly fixed on the outer wall of one end of the shell, and a fixing rod is fixedly and obliquely installed on the upper end of each arc plate, and the fixing rod is L-shaped, and a mounting plate is fixedly installed on the other end of the fixing rod.

[0012] Preferably, a sliding hole is provided at the upper end of the mounting plate, a sliding rod is slidably connected in the sliding hole, a baffle is fixedly installed on one end of the sliding rod, and the other end passes through the sliding hole and is fixedly connected to the connecting plate, and a spring 2 is sleeved on the outer end of the sliding rod, one end of the spring 2 is fixed on the mounting plate, and the other end is fixedly installed on the outer wall of the connecting plate.

[0013] Preferably, the baffle and the sliding hole are both circular, and the diameter of the baffle is larger than the inner diameter of the sliding hole.

[0014] Preferably, a damper is fixedly mounted on the lower end of the mounting plate, and the other end of the damper is fixedly mounted on the side wall of the connecting plate, and a fixing hole is opened at the upper end of the connecting plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By inserting the strip plate, the sound-absorbing plate and the sound-absorbing cotton layer with holes into the shell, the limit column enters the shell by squeezing the spring 1, and when the limit column moves to the inner side of the limit hole, the limit column is pushed into the limit hole under the reaction force of the spring 1, and at the same time, the fixing plate is attached to the side wall of one end of the shell, and one end of the screw is passed through the round hole and threadedly connected with the threaded hole to fix the sound-absorbing plate and the sound-absorbing cotton layer with holes as well as the silent motor and the silent fan blades, and then the fan is fixed to the vehicle body through the buffer fixing component. When the fan is working, the sound-absorbing plate and the sound-absorbing cotton layer with holes absorb aerodynamic noise, the spoiler rod and the spoiler blades interfere with the airflow and reduce the aerodynamic noise, and the buffer fixing component reduces the noise generated when the fan is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a right view of the overall structure of the present invention; Figure 2 It is a left view of the overall structure of the present invention; Figure 3 It is an exploded right view of the overall structure of the present invention; Figure 4 It is an exploded left view of the overall structure of the present invention; Figure 5 This is a schematic diagram of the fixed ring and the sound-absorbing cotton layer with holes of the present invention; Figure 6 This is a schematic diagram of the structure of the buffer fixing component of the present invention; Figure 7 For the present invention Figure 5 A magnified view of the structure of area A.

[0017] In the figure: 1. Shell; 2. Limiting hole; 3. Threaded hole; 4. Strip plate; 5. Fixing plate; 6. Round hole; 7. Sound-absorbing board; 8. Fixing ring; 9. Sound-absorbing cotton layer with holes; 10. Slide groove; 11. Limiting column; 12. Spring 1; 13. Screw; 14. Spoiler rod; 15. Silent motor; 16. Silent fan blade; 17. Arc plate; 18. Fixing rod; 19. Mounting plate; 20. Sliding hole; 21. Sliding rod; 22. Connecting plate; 23. Fixing hole; 24. Spring 2; 25. Damper; 26. Baffle; 27. Bearing; 28. Rotating ring; 29. ​​Spoiler blade. DETAILED DESCRIPTION

[0018] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figures 1 to 7 The present invention provides a technical solution: an axial flow fan with a sound absorption and noise reduction component, comprising: a housing 1, a silent motor 15 and a silent fan blade 16, the silent fan blade 16 is fixedly installed on the output end of the silent motor 15, the silent motor 15 and the silent fan blade 16 are located in the housing 1, a sound absorbing board 7 and a sound absorbing cotton layer 9 with holes are installed on the inner end of the housing 1, a sound absorbing cavity is arranged between the sound absorbing board 7 and the sound absorbing cotton layer 9 with holes, and a pneumatic noise generated when the silent motor 15 and the silent fan blade 16 rotate is absorbed, and a part of the pneumatic noise is first absorbed by the sound absorbing cotton layer 9 with holes. , and then the other part passes through the perforated sound-absorbing cotton layer 9 to enter the sound-absorbing cavity and is absorbed by the sound-absorbing board 7 and the sound-absorbing cavity, which greatly reduces the aerodynamic noise. The sound-absorbing board 7 is in an arc shape and is provided with several blocks. A strip board 4 is fixedly installed between two adjacent sound-absorbing boards 7, and a fixing ring 8 is fixedly installed on the inner ends of the left and right sides of several strip boards 4. The perforated sound-absorbing cotton layer 9 is fixedly installed on the inner ends of the two fixing rings 8, and one end of several strip boards 4 is fixedly connected to the inner end of the fixed plate 5. When the fixed plate 5 is moved, the strip board 4, the sound-absorbing board 7 and the perforated sound-absorbing cotton layer 9 can be moved together.

[0020] The inner walls of the left and right ends of the housing 1 are evenly provided with a plurality of limit holes 2, and the outer ends of the left and right sides of each strip plate 4 are provided with a slide groove 10, and a limit column 11 is slidably connected in the slide groove 10, and an arc slope is provided at the upper end of the limit column 11, and a spring 12 is fixedly installed at the lower end of the limit column 11, and the lower end of the spring 12 is fixedly installed on the inner wall of the bottom end of the slide groove 10. When the strip plate 4 is inserted into the housing 1, the upper end of the limit column 11 is inserted into the limit hole 2, at this time, the spring 12 is in a balanced state, thereby fixing the sound-absorbing board 7 and the perforated sound-absorbing cotton layer 9 to the inner end of the shell 1. When the sound-absorbing board 7 and the perforated sound-absorbing cotton layer 9 need to be taken out, the arc slope on the limit column 11 is pulled outward by the strip plate 4 to push the limit column 11 into the slide groove 10 through the compression spring 12, so that the upper end of the limit column 11 is separated from the limit hole 2, and the sound-absorbing board 7 and the perforated sound-absorbing cotton layer 9 can be taken out.

[0021] A fixing plate 5 is fixedly installed at one end of the shell 1 by screws 13, and a plurality of spoiler rods 14 are evenly fixedly installed on the outer end of the fixing plate 5, and the inner end of the spoiler rod 14 is fixedly installed on the outer end side wall of the silent motor 15. When the fan is started, air will enter the shell 1 from one end of the silent motor 15, and the spoiler rod 14 can disrupt the incoming airflow and reduce aerodynamic noise. The fixing plate 5 is annular, and the outer end of the fixing plate 5 is flush with the outer end of the shell 1, and the inner end of the fixing plate 5 is flush with the inner end of the perforated sound-absorbing cotton layer 9. A plurality of circular holes 6 are evenly opened on the side wall of the fixing plate 5, and a plurality of threaded holes 3 are evenly opened at one end of the shell 1. When the fixing plate 5 is attached to one end of the shell 1, the circular hole 6 can be connected with the threaded hole 3, and one end of the screw 13 passes through the circular hole 6 and is threadedly connected to the inner wall of the threaded hole 3 to fix the fixing plate 5 to one end of the shell 1, and also fix the silent motor 15.

[0022] The other end of the shell 1 is rotatably connected with a rotating ring 28 through a bearing 27. The outer wall of the bearing 27 is fixedly installed on the inner end of the shell 1, and the inner wall of the bearing 27 and the outer end of the rotating ring 28 are fixedly connected. The rotating ring 28 can rotate in the shell 1 through the bearing 27. A number of spoiler blades 29 are evenly and fixedly installed on the inner end of the rotating ring 28. When the fan is started, wind is sent out of the shell 1. The wind blows onto the spoiler blades 29, which will blow the spoiler blades 29 to rotate. The spoiler blades 29 and the rotating ring 28 rotate in the shell 1, disrupting the blown airflow and reducing aerodynamic noise. At the same time, the airflow is diffused outside the spoiler blades 29 to increase the cooling area of ​​the fan.

[0023] A buffer fixing component is provided on the outer wall at one end of the housing 1, and the fan is fixed to the vehicle body through the buffer fixing component. The silent motor 15 will shake when rotating, and the buffer fixing component buffers the fan to further reduce the noise generated by the shaking of the fan. The buffer fixing component includes a plurality of arc plates 17, and the plurality of arc plates 17 are evenly fixed on the outer wall at one end of the housing 1. A fixing rod 18 is fixedly and obliquely installed on the upper end of each arc plate 17, and the fixing rod 18 is L-shaped. A mounting plate 19 is fixedly installed on the other end of the fixing rod 18, and a sliding hole 20 is provided on the upper end of the mounting plate 19. A slide rod 21 is slidably connected in the slide hole 20, one end of the slide rod 21 is fixedly installed with a baffle 26, and the other end passes through the slide hole 20 and is fixedly connected with a connecting plate 22. The baffle 26 and the slide hole 20 are both circular, and the diameter of the baffle 26 is larger than the inner diameter of the slide hole 20. When the slide rod 21 slides in the slide hole 20, the baffle 26 limits the slide rod 21. A spring 24 is sleeved on the outer end of the slide rod 21. One end of the spring 24 is fixed on the mounting plate 19, and the other end is fixedly installed on the outer wall of the connecting plate 22. The slide rod 21 slides in the slide hole 20 by compressing or stretching the spring 24.

[0024] A damper 25 is fixedly installed at the lower end of the mounting plate 19, and the other end of the damper 25 is fixedly installed on the side wall of the connecting plate 22. When the slide bar 21 slides, the damper 25 works synchronously to allow the spring 24 to quickly reset, thereby buffering and reducing the vibration of the fan and reducing noise. A fixing hole 23 is opened at the upper end of the connecting plate 22, and a fixing bolt passes through the fixing hole 23 and is connected to the vehicle body to fix the fan to the vehicle body.

[0025] When the device is working, the strip plate 4, the sound-absorbing plate 7 and the sound-absorbing cotton layer 9 with holes are inserted into the shell 1, and the limiting column 11 enters the shell 1 by squeezing the spring 12. When the limiting column 11 moves to the inner side of the limiting hole 2, the limiting column 11 is pushed into the limiting hole 2 under the reaction force of the spring 12. At the same time, the fixing plate 5 is attached to the side wall of one end of the shell 1, and one end of the screw 13 is passed through the circular hole 6 and threadedly connected with the threaded hole 3 to fix the sound-absorbing plate 7 and the sound-absorbing cotton layer 9 with holes as well as the silent motor 15 and the silent fan blades 16. Then, the fan is fixed to the vehicle body through the buffer fixing component. When the fan is working, the sound-absorbing plate 7 and the sound-absorbing cotton layer 9 with holes absorb aerodynamic noise, and the spoiler rod 14 and the spoiler blades 29 interfere with the airflow to reduce the aerodynamic noise.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An axial flow fan with a sound absorbing and noise reducing component, comprising: A housing (1), a silent motor (15) and silent fan blades (16), wherein the silent fan blades (16) are fixedly mounted on the output end of the silent motor (15), and the silent motor (15) and the silent fan blades (16) are located inside the housing (1), characterized in that a sound absorbing board (7) and a sound absorbing cotton layer with holes (9) are mounted on the inner end of the housing (1), and a sound absorbing cavity is arranged between the sound absorbing board (7) and the sound absorbing cotton layer with holes (9); A fixing plate (5) is fixedly mounted on one end of the housing (1) by means of screws (13); a plurality of spoiler rods (14) are evenly fixedly mounted on the outer end of the fixing plate (5); the inner ends of the spoiler rods (14) are fixedly mounted on the outer end side walls of the silent motor (15); the other end of the housing (1) is rotatably connected to a rotating ring (28) by means of a bearing (27); a plurality of spoiler blades (29) are evenly fixedly mounted on the inner end of the rotating ring (28); and a buffer fixing component is provided on the outer wall of one end of the housing (1).

2. An axial flow fan with a sound absorbing and noise reducing component according to claim 1, characterized in that: The fixing plate (5) is in the shape of a ring, the outer end of the fixing plate (5) is flush with the outer end of the outer shell (1), the inner end of the fixing plate (5) is flush with the inner end of the perforated sound-absorbing cotton layer (9), and a plurality of circular holes (6) are evenly arranged on the side wall of the fixing plate (5).

3. The axial flow fan with a sound absorbing and noise reducing component according to claim 1, characterized in that: The sound absorbing panel (7) is in an arc shape and is provided with a plurality of pieces. A strip plate (4) is fixedly installed between two adjacent sound absorbing panels (7). One end of the strip plate (4) is fixedly connected to the inner end of the fixed plate (5). A fixing ring (8) is fixedly installed at the inner ends of the left and right sides of the plurality of strip plates (4). The perforated sound absorbing cotton layer (9) is fixedly installed at the inner ends of the two fixing rings (8).

4. The axial flow fan with a sound absorbing and noise reducing component according to claim 1, characterized in that: The inner walls of the left and right ends of the shell (1) are evenly provided with a plurality of limit holes (2), and the outer ends of the left and right sides of each strip plate (4) are provided with a slide groove (10), and a limit column (11) is slidably connected in the slide groove (10), and a spring (12) is fixedly installed at the lower end of the limit column (11), and the lower end of the spring (12) is fixedly installed on the inner wall of the bottom end of the slide groove (10). When the strip plate (4) is inserted into the shell (1), the upper end of the limit column (11) is inserted into the limit hole (2), and at this time, the spring (12) is in a balanced state.

5. The axial flow fan with a sound absorbing and noise reducing component according to claim 1, characterized in that: One end of the housing (1) is evenly provided with a plurality of threaded holes (3); when the fixing plate (5) is attached to one end of the housing (1), the circular hole (6) can be connected to the threaded hole (3); one end of the screw (13) passes through the circular hole (6) and is threadedly connected to the inner wall of the threaded hole (3).

6. The axial flow fan with a sound absorbing and noise reducing component according to claim 1, characterized in that: The outer wall of the bearing (27) is fixedly mounted on the inner end of the housing (1), and the inner wall of the bearing (27) and the outer end of the rotating ring (28) are fixedly connected.

7. The axial flow fan with a sound absorbing and noise reducing component according to claim 1, characterized in that: The buffer fixing component comprises a plurality of arc-shaped plates (17), the plurality of arc-shaped plates (17) being evenly fixed on the outer wall of one end of the housing (1), a fixing rod (18) being fixedly and obliquely mounted on the upper end of each arc-shaped plate (17), the fixing rod (18) being L-shaped, and a mounting plate (19) being fixedly mounted on the other end of the fixing rod (18).

8. An axial flow fan with a sound absorbing and noise reducing component according to claim 7, characterized in that: A sliding hole (20) is formed at the upper end of the mounting plate (19), a sliding rod (21) is slidably connected in the sliding hole (20), a baffle (26) is fixedly mounted on one end of the sliding rod (21), and the other end passes through the sliding hole (20) and is fixedly connected to the connecting plate (22), a spring (24) is sleeved on the outer end of the sliding rod (21), one end of the spring (24) is fixed on the mounting plate (19), and the other end is fixedly mounted on the outer wall of the connecting plate (22).

9. An axial flow fan with a sound absorbing and noise reducing component according to claim 8, characterized in that: The baffle plate (26) and the sliding hole (20) are both circular, and the diameter of the baffle plate (26) is larger than the inner diameter of the sliding hole (20).

10. An axial flow fan with a sound absorbing and noise reducing component according to claim 9, characterized in that: A damper (25) is fixedly mounted on the lower end of the mounting plate (19), and the other end of the damper (25) is fixedly mounted on the side wall of the connecting plate (22). A fixing hole (23) is formed at the upper end of the connecting plate (22).

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