Centrifugal fan with shock absorption and noise reduction functions

Abstract

The centrifugal fan with the shock absorption and noise reduction functions comprises a centrifugal fan body, two second damping springs are symmetrically arranged at the upper end and the lower end of a cross piece, and a sound insulation layer is arranged on the inner wall of the centrifugal fan body. By means of the structure, the upper end of the fourth fixing block is fixedly connected with the fifth fixing block, the upper end of the third damping spring is fixedly connected to the lower end of the fixing plate, the connecting plate is fixedly connected between the cross pieces, the two second damping springs are symmetrically arranged at the upper end and the lower end of the connecting plate, and the centrifugal fan body has the good buffering effect in the using process; a cylindrical honeycomb sound insulation pad is fixedly connected to the inner wall of the air outlet cylinder, a plurality of mounting plates are evenly arranged on the inner wall of the centrifugal fan body and locked and fixed through threaded holes and locking bolts, and sound insulation layers are arranged on the inner wall of the centrifugal fan body and comprise stacked sound insulation pads, honeycomb sound insulation plates and cylindrical honeycomb sound insulation pads. And an excellent sound insulation effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans with vibration reduction and noise reduction functions, in particular to a centrifugal fan with vibration reduction and noise reduction functions. Background Art

[0002] Centrifugal fans are mainly used for ventilation. When the impeller rotates, the gas between the blades of the centrifugal fan is subjected to the centrifugal force to obtain kinetic energy and is discharged from the periphery of the impeller. It is guided by the volute-shaped casing to flow toward the outlet of the fan, thereby forming a negative pressure in the center of the impeller, so that the external airflow flows in continuously to supplement, so that the fan can discharge gas. During its use, it is necessary to reduce vibration and noise, so it is necessary to set up a centrifugal fan with vibration and noise reduction functions.

[0003] When a centrifugal fan with shock-absorbing and noise-reducing functions is used, in the prior art, due to its relatively large power, a large vibration will be generated during its operation. The simple buffering effect makes its buffering performance fail to meet expectations, and a large noise will be generated during its movement, which easily affects the use of the centrifugal fan. Utility Model Content

[0004] The utility model aims to provide a centrifugal fan with shock-absorbing and noise-reducing functions, so that the centrifugal fan body has a good buffering effect during use and has an excellent sound insulation effect.

[0005] In order to achieve the above-mentioned purpose, a centrifugal fan with shock absorption and noise reduction function is provided, including a centrifugal fan body, an output end of the centrifugal fan body is fixed and connected with an air outlet pipe, a plurality of installation boxes are evenly arranged at the lower end of the centrifugal fan body, a plurality of first damping springs are evenly arranged inside the installation boxes, a fixing plate is fixedly connected to the lower end of the installation box, a cross-piece is arranged at the lower end of the fixing plate, two second damping springs are symmetrically arranged at the upper and lower ends of the cross-piece, four third damping springs are symmetrically arranged at the upper and lower ends of the cross-piece, the third damping spring is arranged on the outside of the second damping spring, a sound insulation layer is arranged on the inner wall of the centrifugal fan body, a mounting plate is fixedly connected to one side of the sound insulation layer, the sound insulation layer includes stacked sound insulation pads, and a base is arranged at the lower end of the cross-piece.

[0006] According to the centrifugal fan with shock-absorbing and noise-reducing functions, a cylindrical honeycomb sound insulation pad is fixedly connected to the inner wall of the air outlet cylinder.

[0007] According to the centrifugal fan with vibration reduction and noise reduction functions, two conical protective pieces are symmetrically fixedly connected to the upper end of the fixed plate, and the conical protective pieces and the outer wall of the centrifugal fan body are slidably connected.

[0008] According to the centrifugal fan with shock absorption and noise reduction functions, the upper and lower ends of the first damping spring are respectively fixedly connected with a first fixed block and a second fixed block, the first fixed block is fixedly connected to the lower end of the centrifugal fan body, and the second fixed block is fixedly connected to the top of the inner side of the installation box.

[0009] According to the centrifugal fan with shock absorption and noise reduction function, a connecting plate is fixedly connected between the cross members, a third fixing block is fixedly connected to one side of the second damping spring, and one side of the third fixing block is fixedly connected to one end of the connecting plate.

[0010] According to the centrifugal fan with shock absorption and noise reduction function, the lower end of the third damping spring is fixedly connected to the fifth fixing block, the lower end of the fifth fixing block is fixedly connected to the fourth fixing block, and the lower end of the fourth fixing block is fixedly connected to the cross member.

[0011] According to the centrifugal fan with vibration reduction and noise reduction function, the side wall of the mounting plate is symmetrically provided with two threaded holes, and the inner sides of the threaded holes are threadedly connected with locking bolts.

[0012] According to the centrifugal fan with shock-absorbing and noise-reducing functions, a honeycomb sound insulation board is fixedly connected to the lower end of the stacked sound insulation pad.

[0013] Beneficial effects:

[0014] 1. A plurality of first fixing blocks are evenly fixedly connected to the lower end of the centrifugal fan body, a first damping spring is fixedly connected to the lower end of the first fixing block, a second fixing block is fixedly connected to the lower end of the first damping spring, a mounting box is fixedly connected to the lower end of the second fixing block, a fixing plate is fixedly connected to the lower end of the fixing box, a cross member is arranged at the lower end of the fixing plate, two fourth fixing blocks are symmetrically fixedly connected to the upper and lower ends of the cross member, a fifth fixing block is fixedly connected to the upper end of the fourth fixing block, a third damping spring is fixedly connected to the upper end of the fifth fixing block, the upper end of the third damping spring is fixedly connected to the lower end of the fixing plate, a connecting plate is fixedly connected between the cross members, and two second damping springs are symmetrically arranged at the upper and lower ends of the connecting plate, so that the centrifugal fan body has a good buffering effect during use.

[0015] 2. An air outlet is fixed and connected to the output end of the centrifugal fan body. A cylindrical honeycomb sound insulation pad is fixedly connected to the inner wall of the air outlet. A plurality of mounting plates are evenly arranged on the inner wall of the centrifugal fan body. The mounting plates are locked and fixed by threaded holes and locking bolts. A sound insulation layer is arranged on the inner wall of the centrifugal fan body. The sound insulation layer includes stacked sound insulation pads, honeycomb sound insulation boards and cylindrical honeycomb sound insulation pads, which provide excellent sound insulation effect.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0018] Figure 1 A three-dimensional diagram of a centrifugal fan with vibration reduction and noise reduction functions proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of a mounting box of a centrifugal fan with vibration reduction and noise reduction functions proposed by the utility model;

[0020] Figure 3 This is a schematic structural diagram of an inner wall sound insulation layer of a centrifugal fan with vibration reduction and noise reduction functions proposed by the utility model;

[0021] Figure 4 This is a schematic diagram of the composition structure of a sound insulation layer of a centrifugal fan with vibration reduction and noise reduction functions proposed by the utility model;

[0022] Figure 5 The utility model proposed Figure 1 Schematic diagram of the structure at A in the middle.

[0023] Legend:

[0024] 1. Centrifugal fan body; 2. Conical protective member; 3. Mounting box; 4. First fixing block; 5. First damping spring; 6. Second fixing block; 7. Cross member; 8. Connecting plate; 9. Second damping spring; 10. Third fixing block; 11. Fourth fixing block; 12. Third damping spring; 13. Fifth fixing block; 14. Fixing plate; 15. Base; 16. Sound insulation layer; 17. Locking bolt; 18. Threaded hole; 19. Stacked sound insulation pad; 20. Air outlet; 21. Honeycomb sound insulation board; 22. Mounting plate; 23. Columnar honeycomb sound insulation pad DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0026] Reference Figure 1-5The utility model embodiment is a centrifugal fan with shock absorption and noise reduction function, which includes a centrifugal fan body 1, the centrifugal fan body 1 is controlled by a power supply and is used for ventilation. The output end of the centrifugal fan body 1 is fixed and connected with an air outlet 20, a plurality of installation boxes 3 are evenly arranged at the lower end of the centrifugal fan body 1, and a plurality of first damping springs 5 ​​are evenly arranged inside the installation boxes 3. A fixing plate 14 is fixedly connected to the lower end of the installation box 3, and a cross member 7 is arranged at the lower end of the fixing plate 14. Two second damping springs 9 are symmetrically arranged at the upper and lower ends of the cross member 7, and four third damping springs 12 are symmetrically arranged at the upper and lower ends of the cross member 7. The third damping spring 12 is arranged on the outside of the second damping spring 9, and a sound insulation layer 16 is arranged on the inner wall of the centrifugal fan body 1, and a mounting plate 22 is fixedly connected to one side of the sound insulation layer 16. The sound insulation layer 16 includes a stacked sound insulation pad 19, and the stacked sound insulation pad 19 is a plurality of sound insulation materials stacked together. A base 15 is arranged at the lower end of the cross member 7.

[0027] A columnar honeycomb sound insulation pad 23 is fixedly connected to the inner wall of the air outlet tube 20. The columnar honeycomb sound insulation pad 23 is columnar in shape and has a honeycomb sound insulation material inside.

[0028] Two conical protection members 2 are symmetrically fixedly connected to the upper end of the fixing plate 14 , and the conical protection members 2 and the outer wall of the centrifugal fan body 1 are slidably connected.

[0029] The first damping spring 5 is fixedly connected to a first fixing block 4 and a second fixing block 6 at both ends thereof. The first fixing block 4 is fixedly connected to the lower end of the centrifugal fan body 1 , and the second fixing block 6 is fixedly connected to the top of the inner side of the installation box 3 .

[0030] A connecting plate 8 is fixedly connected between the cross members 7 , and a third fixing block 10 is fixedly connected to one side of the second damping spring 9 . The third fixing block 10 is used to install the second damping spring 9 , and one side of the third fixing block 10 is fixedly connected to one end of the connecting plate 8 .

[0031] The third damping spring 12 is fixedly connected to a fifth fixing block 13 at its lower end, the fifth fixing block 13 is fixedly connected to a fourth fixing block 11 at its lower end, and the fourth fixing block 11 is fixedly connected to the cross member 7 at its lower end.

[0032] Two threaded holes 18 are symmetrically arranged on the side wall of the mounting plate 22 . The inner sides of the threaded holes 18 are threadedly connected with locking bolts 17 . The locking bolts 17 are used to fix the mounting plate 22 .

[0033] A honeycomb sound insulation board 21 is fixedly connected to the lower end of the stacked sound insulation pad 19 .

[0034] Working principle: After the device is installed, two fourth fixing blocks 11 are symmetrically fixedly connected to the upper and lower ends of the cross member 7, a fifth fixing block 13 is fixedly connected to the upper end of the fourth fixing block 11, a third damping spring 12 is fixedly connected to the upper end of the fifth fixing block 13, and the upper end of the third damping spring 12 is fixedly connected to the lower end of the fixing plate 14. A connecting plate 8 is fixedly connected between the cross members 7, and two second damping springs 9 are symmetrically arranged at the upper and lower ends of the connecting plate 8, so that the centrifugal fan body 1 has a good buffering effect during use, and the output end of the centrifugal fan body 1 is fixedly and communicated with an air outlet 20, and a cylindrical honeycomb sound insulation pad 23 is fixedly connected to the inner wall of the air outlet 20. A plurality of mounting plates 22 are evenly arranged on the inner wall of the centrifugal fan body 1, and the mounting plates 22 are locked and fixed by threaded holes 18 and locking bolts 17. A sound insulation layer 16 is arranged on the inner wall of the centrifugal fan body 1, and the sound insulation layer 16 includes stacked sound insulation pads 19, honeycomb sound insulation boards 21, and cylindrical honeycomb sound insulation pads 23, so that it has an excellent sound insulation effect.

[0035] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A centrifugal fan with vibration reduction and noise reduction function, comprising a centrifugal fan body (1), characterized in that: An air outlet (20) is fixedly and interconnectedly arranged at the output end of the centrifugal fan body (1); a plurality of mounting boxes (3) are evenly arranged at the lower end of the centrifugal fan body (1); a plurality of first damping springs (5) are evenly arranged inside the mounting boxes (3); a fixing plate (14) is fixedly connected to the lower end of the mounting box (3); a cross member (7) is arranged at the lower end of the fixing plate (14); two second damping springs (9) are symmetrically arranged at the upper and lower ends of the cross member (7); four third damping springs (12) are symmetrically arranged at the upper and lower ends of the cross member (7); the third damping springs (12) are arranged outside the second damping springs (9); a sound insulation layer (16) is arranged on the inner wall of the centrifugal fan body (1); a mounting plate (22) is fixedly connected to one side of the sound insulation layer (16); the sound insulation layer (16) comprises a stacked sound insulation pad (19); and a base (15) is arranged at the lower end of the cross member (7).

2. A centrifugal fan with vibration reduction and noise reduction function according to claim 1, characterized in that: A columnar honeycomb sound insulation pad (23) is fixedly connected to the inner wall of the air outlet cylinder (20).

3. The centrifugal fan with vibration reduction and noise reduction function according to claim 1, characterized in that: Two conical protective members (2) are symmetrically fixedly connected to the upper end of the fixed plate (14), and the conical protective members (2) and the outer wall of the centrifugal fan body (1) are slidably connected.

4. The centrifugal fan with vibration reduction and noise reduction function according to claim 1, characterized in that: The first damping spring (5) is fixedly connected to a first fixing block (4) and a second fixing block (6) at the upper and lower ends thereof, respectively; the first fixing block (4) is fixedly connected to the lower end of the centrifugal fan body (1); and the second fixing block (6) is fixedly connected to the inner top of the installation box (3).

5. The centrifugal fan with vibration reduction and noise reduction function according to claim 1, characterized in that: A connecting plate (8) is fixedly connected between the cross members (7), a third fixing block (10) is fixedly connected to one side of the second damping spring (9), and one side of the third fixing block (10) is fixedly connected to one end of the connecting plate (8).

6. The centrifugal fan with vibration reduction and noise reduction function according to claim 1, characterized in that: The lower end of the third damping spring (12) is fixedly connected to a fifth fixing block (13), the lower end of the fifth fixing block (13) is fixedly connected to a fourth fixing block (11), and the lower end of the fourth fixing block (11) is fixedly connected to a cross member (7).

7. The centrifugal fan with vibration reduction and noise reduction function according to claim 1, characterized in that: The side wall of the mounting plate (22) is symmetrically provided with two threaded holes (18), and the inner sides of the threaded holes (18) are threadedly connected with locking bolts (17).

8. The centrifugal fan with vibration reduction and noise reduction function according to claim 1, characterized in that: The lower end of the stacked sound insulation pad (19) is fixedly connected to a honeycomb sound insulation board (21).

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