CN221322866U - Damping and noise reducing device for fan - Google Patents

Abstract

The utility model discloses a fan vibration and noise reduction device, which belongs to the technical field of fans and comprises an air inlet and outlet flow adjustment noise reduction assembly, wherein an air outlet pipe and an air inlet pipe of the fan are connected with the air inlet and outlet flow adjustment noise reduction assembly which is used for reducing the noise of air inlet and outlet of the fan and can control the air inlet and outlet flow, the air inlet and outlet flow adjustment noise reduction assembly comprises an air outlet flow adjustment noise reduction assembly and an air inlet flow adjustment noise reduction assembly, an air outlet pipe of the fan is connected with the air outlet flow adjustment noise reduction assembly, the air inlet pipe of the fan is connected with the air inlet flow adjustment noise reduction assembly, the air outlet of the fan is noise reduced through the air outlet flow adjustment noise reduction assembly, the air outlet flow of the fan is regulated through the air inlet flow adjustment noise reduction assembly, and the air inlet flow of the fan is regulated.

Description

Damping and noise reducing device for fan

Technical Field

The utility model belongs to the technical field of fans, and particularly relates to a fan damping and noise reducing device.

Background

Nowadays, with the development of industrial technology, environmental pollution is more and more serious, and a fan is a main means for exhausting and collecting industrial waste gas in industrial production, so that the fan is widely used in industrial production, but a noise elimination device is required to reduce noise of the fan due to a large amount of noise generated when the fan operates.

Chinese patent CN219159265U proposes a fan noise abatement structure, comprising a housing and a noise reduction inner core; connecting ports are arranged at two ends of the shell, connecting flanges are arranged on the connecting ports, connecting screw holes are formed in the connecting flanges, a sound insulation layer is arranged on the surface of the shell, and a protective sleeve is arranged on the outer wall of the sound insulation layer; the inner core of making an uproar falls in the inner chamber of shell, and the edge of inner core of making an uproar falls is provided with the honeycomb panel, and the inner core of making an uproar falls is connected with the inner chamber lateral wall of shell through the honeycomb panel, and the inner chamber of inner core of making an uproar falls is provided with the filling material layer.

However, the above patent only has a single effect of reducing noise on the fan, and the noise reduction device is required to be installed at the air inlet and outlet of the fan, so that the air flow of the air inlet and outlet of the fan is difficult to adjust.

Based on the above, the utility model designs a fan damping and noise reducing device to solve the above problems.

Disclosure of utility model

Aiming at the defects existing in the prior art, the utility model provides a fan vibration and noise reduction device.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

A fan vibration/noise reduction device is arranged on a fan and comprises an air inlet/outlet flow adjusting and noise reduction assembly;

The air outlet pipe and the air inlet pipe of the fan are connected with an air inlet and outlet flow regulating and noise reducing component which is used for reducing the noise of the air inlet and outlet of the fan and controlling the air inlet and outlet flow;

The air inlet and outlet flow adjusting and noise reducing assembly comprises an air outlet flow adjusting and noise reducing assembly and an air inlet flow adjusting and noise reducing assembly, an air outlet pipe of the fan is connected with the air outlet flow adjusting and noise reducing assembly, and an air inlet pipe of the fan is connected with the air inlet flow adjusting and noise reducing assembly.

Still further, the flow regulation of giving vent to anger falls the subassembly of making an uproar and includes first pipe of making an uproar, first threaded rod, the carousel, first piston and first spacing guide bar, fixedly connected with first pipe of making an uproar behind the outlet duct of fan, the front end of first pipe of making an uproar passes the preceding lateral wall of fan outlet duct and with fan fixed connection, first threaded rod passes the inside fan outlet duct back lateral wall of first pipe of making an uproar and rotates with the fan to be connected, the rear end fixedly connected with carousel of first threaded rod, the inside first threaded rod of first pipe of making an uproar passes first piston and with first piston threaded connection, the outer end of first piston and the inner wall laminating sliding connection of first pipe of making an uproar, the front end fixedly connected with of first threaded rod a plurality of groups head rod, the one end fixedly connected with of head rod keeping away from first threaded rod is on the inner wall of first pipe of making an uproar, wherein fixedly connected with first spacing guide bar on the lateral wall that a set of head rod is close to first piston, first spacing guide bar passes first piston and fixedly connected with on the back inner wall of fan outlet duct.

Further, a plurality of groups of vent holes are formed in the side wall of the first noise reduction pipe inside the air outlet pipe of the fan.

Still further, the subassembly of making an uproar falls in air intake flow regulation includes that the second falls the pipe of making an uproar, the second threaded rod, the second piston, the spacing guide bar of second, swivel and second connecting rod, the right-hand member outside fixed connection of the pipe of making an uproar falls in the second falls on the intake pipe inner wall of fan, the second falls the left inner wall middle part of pipe and rotates and be connected with the second piston of making an uproar, the left inner wall outer end fixedly connected with second spacing guide bar of the pipe of making an uproar falls in the second, second threaded rod and the spacing guide bar of second all pass the second piston, the spacing guide bar of second and second piston sliding connection, the outer end of second piston and the inner wall laminating sliding connection of the pipe of making an uproar falls in the second, the right-hand member fixed connection of the spacing guide bar of second falls on the right-hand member of pipe of making an uproar, the right-hand member of the fan intake pipe rotates and is connected with the second pipe of making an uproar, the right-hand member fixedly connected with a plurality of second connecting rods of the second threaded rod, the outer end of the second connecting rod is all fixedly connected with on the inner wall of swivel.

Furthermore, a plurality of groups of vent holes are formed in the second noise reduction pipe in the air inlet pipe of the fan.

Further, the bottom fixedly connected with of fan is used for carrying out the shock attenuation subassembly of shock attenuation to fan vertical and horizontal position.

Still further, the damper includes vertical damper and horizontal damper, and the bottom fixedly connected with vertical damper of fan, the interior bottom fixedly connected with horizontal damper of vertical damper, horizontal damper's top fixed connection is on the bottom of fan.

Still further, vertical damper includes spacing traveller, limit sleeve, supporting baseplate and first spring, equal fixedly connected with spacing traveller on the bottom four corners of fan, and the equal sliding connection of lower extreme of spacing traveller has limit sleeve, and limit sleeve's bottom fixedly connected with supporting baseplate, equal fixedly connected with a set of first spring between the fan bottom in every group limit sleeve outside and the supporting baseplate top.

Further, the upper and lower length of the limit sliding column is equal to the upper and lower length of the notch inside the limit sleeve.

Further, the outer end of the top of the supporting bottom plate is fixedly connected with a plurality of groups of horizontal damping components.

The utility model has the following technical effects:

When the fan works, gas enters the second noise reduction pipe from the air inlet pipe, at the moment, the gas is dispersed into the air inlet pipe of the fan through the plurality of groups of vent holes on the second noise reduction pipe, so that noise when the fan sucks air is reduced, when the gas is discharged from the air outlet pipe of the fan, the gas is dispersed into the first noise reduction pipe through the vent holes on the first noise reduction pipe, and is discharged through the first noise reduction pipe, so that noise reduction of air outlet is realized, when the air inlet flow is required to be regulated, the swivel is rotated, the swivel drives the second threaded rod to rotate through the second connecting rod, the second threaded rod drives the second piston to move left and right under the limit of the second limit guide rod, further, the regulation of the ventilation quantity of the air on the second noise reduction pipe of the air inlet pipe of the fan can be realized when the fan sucks air is realized, the regulation of the air inlet flow is realized, when the air outlet flow is required to be regulated is realized, the turntable is rotated, the first threaded rod drives the first threaded rod to rotate under the limit fixing of the first connecting rod, the first piston is driven to move back and forth under the limit guide of the first limit guide rod, the air in the first noise reduction pipe is realized, the regulation of the quantity of the air in the air inside the fan can be realized, the air inlet flow and the air outlet flow is regulated, and the air outlet flow is further regulated, and the air outlet is reduced.

When the fan works, the limit sliding column is driven to move up and down in the limit sleeve by the up-and-down vibration of the fan, the first spring is pulled or extruded by the up-and-down vibration of the fan to enable the first spring to deform, so that the restoring force of the linkage sliding ring pulls down the fan or pushes up the fan, damping force to the fan is generated, damping force to the fan in the vertical direction is achieved, when the fan vibrates up and down, the fan drives the upper end of the linkage rod to move up and down, so that the linkage rod drives the linkage sliding ring to move horizontally under the limit of the limit sliding rod, the linkage sliding ring extrudes or stretches the second spring, the restoring force of the second spring is reacted with the fan through the linkage rod to further damp the fan in the vertical direction, when the fan vibrates horizontally, the second supporting seat drives the linkage sliding ring to move horizontally, the linkage sliding ring stretches or extrudes the second spring, the restoring force of the second spring is used for the fan through the second spring, damping force to damp the fan in the horizontal direction of the fan is generated, and damping force to the fan in the horizontal direction is achieved, and the fan is damped, so that the fan cannot be damaged due to overlarge vibration.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a first perspective view of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a second perspective view of the present utility model;

FIG. 4 is a cross-sectional view taken along the B-B direction of FIG. 2;

FIG. 5 is a cross-sectional view taken along the direction A-A of FIG. 2;

Fig. 6 is an enlarged view at C in fig. 3.

In the accompanying drawings: 1. fan 2, intake air flow adjustment noise reduction assembly 21, exhaust air flow adjustment noise reduction assembly 211, first noise reduction tube 212, first threaded rod 213, turntable 214, first piston 215, first stop guide rod 216, first connecting rod 22, intake air flow adjustment noise reduction assembly 221, second noise reduction tube 222, second threaded rod 223, second piston 224, second stop guide rod 225, swivel 226, second connecting rod 3, shock absorbing assembly 31, vertical shock absorbing assembly 311, stop slide post 312, stop sleeve 313, support floor 314, first spring 32, horizontal shock absorbing assembly 321, first support seat 322, stop slide rod 323, second support seat 324, slip ring 325, linkage rod 326, second spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model is further described below with reference to examples.

Reference to "left", "right", "front", "rear", "upper", "lower" in the following description is oriented in the viewing direction of the front view.

Example 1

Referring to fig. 1-6 of the drawings, as a preferred embodiment of the present utility model, a fan vibration/noise reduction device is installed on a fan 1, and includes an air inlet/outlet flow adjusting and noise reduction assembly 2;

The air outlet pipe and the air inlet pipe of the fan 1 are connected with an air inlet and outlet flow regulating and noise reducing component 2 which is used for reducing the noise of the air inlet and outlet of the fan 1 and controlling the air inlet and outlet flow;

The bottom of the fan 1 is fixedly connected with a damping component 3 for damping the vertical and horizontal positions of the fan 1;

The air inlet and outlet flow regulating and noise reducing assembly 2 comprises an air outlet flow regulating and noise reducing assembly 21 and an air inlet flow regulating and noise reducing assembly 22, an air outlet pipe of the fan 1 is connected with the air outlet flow regulating and noise reducing assembly 21, and an air inlet pipe of the fan 1 is connected with the air inlet flow regulating and noise reducing assembly 22;

The air outlet flow adjusting noise reduction assembly 21 comprises a first noise reduction pipe 211, a first threaded rod 212, a rotary table 213, a first piston 214 and a first limit guide rod 215, wherein the first noise reduction pipe 211 is fixedly connected to the inner wall behind an air inlet pipe of the fan 1, the front end of the first noise reduction pipe 211 penetrates through the front side wall of an air outlet pipe of the fan 1 and is fixedly connected with the fan 1, the first threaded rod 212 penetrates through the rear side wall of the air outlet pipe of the fan 1 inside the first noise reduction pipe 211 and is rotationally connected with the fan 1, the rear end of the first threaded rod 212 is fixedly connected with the rotary table 213, the first threaded rod 212 inside the first noise reduction pipe 211 penetrates through the first piston 214 and is in threaded connection with the first piston 214, the outer end of the first piston 214 is in fit sliding connection with the inner wall of the first noise reduction pipe 211, one end of the first connecting rod 216 far away from the first threaded rod 211 is fixedly connected to the inner wall of the first noise reduction pipe 211, the first limit guide rod 215 is fixedly connected to the side wall of the first threaded rod 216 near the first piston 214, the first limit guide rod 215 penetrates through the first piston 214 and is fixedly connected to the inner wall of the first air outlet pipe 1, the first limit guide rod 215 is connected to the inner wall of the first air outlet pipe 1, and the first noise reduction pipe is connected to the inner wall of the first vent pipe 211 is provided with the first limit guide rod;

The air inlet flow adjusting and noise reducing assembly 22 comprises a second noise reducing pipe 221, a second threaded rod 222, a second piston 223, a second limiting guide rod 224, a swivel 225 and a second connecting rod 226, wherein the outer side of the right end of the second noise reducing pipe 221 is fixedly connected to the inner wall of an air inlet pipe of the fan 1, the middle part of the left inner wall of the second noise reducing pipe 221 is rotationally connected with the second piston 223, the outer end of the left inner wall of the second noise reducing pipe 221 is fixedly connected with the second limiting guide rod 224, the second threaded rod 222 and the second limiting guide rod 224 penetrate through the second piston 223, the second limiting guide rod 224 is in sliding connection with the second piston 223, the second threaded rod 222 is in threaded connection with the second piston 223, the outer end of the second piston 223 is in fit sliding connection with the inner wall of the second noise reducing pipe 221, the right end of the second limiting guide rod 224 is fixedly connected to the right end of the second noise reducing pipe 221, the right end of the air inlet pipe of the fan 1 is rotationally connected with the second noise reducing pipe 221, the right end of the second threaded rod 222 is fixedly connected with a plurality of groups of second connecting rods 226, the outer ends of the second connecting rods 226 are fixedly connected to the inner walls of the swivel 225, and a plurality of groups of air inlet pipes 1 are internally provided with a plurality of air holes;

When the fan 1 works, air enters the second noise reduction pipe 221 from the air inlet pipe, at the moment, the air is dispersed into the air inlet pipe of the fan 1 through a plurality of groups of air holes on the second noise reduction pipe 221, so that the noise generated when the fan 1 sucks air is reduced, when the air is discharged from the air outlet pipe of the fan 1, the air is dispersed into the first noise reduction pipe 211 through the air holes on the first noise reduction pipe 211, and is discharged through the first noise reduction pipe 211, the reduction of the air outlet noise is realized, when the air inlet flow is required to be regulated, the swivel 225 is rotated, the swivel 225 drives the second threaded rod 222 to rotate through the second connecting rod 226, the second threaded rod 222 drives the second piston 223 to move left and right under the limit of the second limit guide rod 224, and then realized the regulation of the quantity of ventilating on the second pipe of making an uproar 221 that falls that the gas can get into fan 1 intake pipe when fan 1 breathes in, and then realized the regulation to the flow of admitting air, when need go on adjusting to the flow of giving vent to anger, rotate carousel 213, carousel 213 drives first threaded rod 212 and rotates under the spacing fixed of head rod 216, first threaded rod 212 drives first piston 214 and moves back and forth at the spacing guide of first spacing guide rod 215, realized the regulation to the inside gas of fan 1 through the quantity of ventilation hole on the first pipe of making an uproar 211 of making an uproar that falls of first pipe 211 exhaust that falls, and then realized the regulation to the flow of giving vent to anger, realized the regulation to fan 1 business turn over flow and the reduction to fan 1 business turn over gas noise.

Example 2

As shown in fig. 1 to 6, as a preferred embodiment of the present utility model, the damper assembly 3 includes a vertical damper assembly 31 and a horizontal damper assembly 32, the bottom of the blower 1 is fixedly connected with the vertical damper assembly 31, the inner bottom of the vertical damper assembly 31 is fixedly connected with the horizontal damper assembly 32, and the top of the horizontal damper assembly 32 is fixedly connected to the bottom of the blower 1;

The vertical damping component 31 comprises limit sliding columns 311, limit sleeves 312, support bottom plates 313 and first springs 314, wherein the limit sliding columns 311 are fixedly connected to four corners of the bottom of the fan 1, the lower ends of the limit sliding columns 311 are fixedly connected with the limit sleeves 312, the bottom of each limit sleeve 312 is fixedly connected with the support bottom plates 313, a group of first springs 314 are fixedly connected between the bottom of the fan 1 outside each group of limit sleeves 312 and the top of the support bottom plates 313, and the outer ends of the tops of the support bottom plates 313 are fixedly connected with a plurality of groups of horizontal damping components 32;

The horizontal damping component 32 comprises a first supporting seat 321, limiting slide rods 322, a second supporting seat 323, a linkage slide ring 324, a linkage rod 325 and a second spring 326, wherein the middle parts of the front end, the rear end, the left end and the right end of the supporting bottom plate 313 are fixedly connected with the first supporting seat 321, a group of limiting slide rods 322 penetrate through the first supporting seat 321 and are fixedly connected with the first supporting seat 321, two ends, far away from the first supporting seat 321, of the limiting slide rods 322 are fixedly connected with the second supporting seat 323, the bottom of the second supporting seat 323 is fixedly connected with the top of the supporting bottom plate 313, the limiting slide rods 322 on the left side and the right side of the first supporting seat 321 are respectively connected with the linkage slide ring 324 in a sliding mode, the upper ends of the linkage slide rings 324 are respectively connected with the linkage rod 325 in a rotating mode through hinge bases, the second springs 326 are respectively fixedly connected between the linkage slide rings 324 and the first supporting seat 321, and the limiting slide rods 322 are wrapped by the second springs 326;

When the fan 1 works, the limit sliding column 311 is driven to move up and down in the limit sleeve 312 when the fan 1 vibrates up and down, the first spring 314 is pulled or extruded when the fan 1 vibrates up and down, so that the first spring 314 is deformed, the restoring force of the linkage sliding ring 324 pulls down the fan 1 or pushes up the fan 1, damping force to the fan 1 is generated, vertical vibration reduction to the fan 1 is achieved, when the fan 1 vibrates up and down, the fan 1 drives the upper end of the linkage rod 325 to move up and down, so that the linkage rod 325 drives the linkage sliding ring 324 to move horizontally under the limit of the limit sliding rod 322, the linkage sliding ring 324 extrudes or stretches the second spring 326, restoring force of the second spring 326 is reacted to the fan 1 through the linkage rod 325, further vibration reduction is carried out to the vertical direction of the fan 1, when the fan 1 vibrates horizontally, the fan 1 drives the second supporting seat 323 to move horizontally, the second sliding ring 324 stretches or extrudes the second spring 326, the restoring force of the second spring 326 is used for the fan 1 through the second spring 326, and the horizontal vibration reduction to the fan 1 is achieved, and the fan 1 is not damaged due to the horizontal vibration reduction to the fact that the fan 1 vibrates horizontally.

Example 3

As shown in fig. 1-6, as a preferred embodiment of the present utility model, the upper and lower length of the limit strut 311 is equal to the upper and lower length of the notch inside the limit sleeve 312.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. The utility model provides a fan vibration/noise reduction device installs on fan (1), including business turn over air flow regulation noise reduction subassembly (2), its characterized in that:

The air outlet pipe and the air inlet pipe of the fan (1) are connected with an air inlet and outlet flow regulating and noise reducing assembly (2) which is used for reducing the noise of the air inlet and outlet of the fan (1) and controlling the air inlet and outlet flow;

the air inlet and outlet flow adjusting and noise reducing assembly (2) comprises an air outlet flow adjusting and noise reducing assembly (21) and an air inlet flow adjusting and noise reducing assembly (22), the air outlet pipe of the fan (1) is connected with the air outlet flow adjusting and noise reducing assembly (21), and the air inlet pipe of the fan (1) is connected with the air inlet flow adjusting and noise reducing assembly (22).

2. The fan damping and noise reducing device according to claim 1, wherein the air outlet flow adjusting noise reducing assembly (21) comprises a first noise reducing pipe (211), a first threaded rod (212), a rotary table (213), a first piston (214) and a first limit guide rod (215), the first noise reducing pipe (211) is fixedly connected to the rear inner wall of the air outlet pipe of the fan (1), the front end of the first noise reducing pipe (211) penetrates through the front side wall of the air outlet pipe of the fan (1) and is fixedly connected with the fan (1), the first threaded rod (212) penetrates through the rear side wall of the air outlet pipe of the fan (1) in the first noise reducing pipe (211) and is in rotary connection with the fan (1), the rotary table (213) is fixedly connected to the rear end of the first threaded rod (212), the first threaded rod (212) in the first noise reducing pipe (211) penetrates through the first piston (214) and is in threaded connection with the first piston (214), the outer end of the first piston (214) is in sliding connection with the inner wall of the first noise reducing pipe (211), the front end of the first threaded rod (212) is fixedly connected with a plurality of groups of first connecting rods (216), the first connecting rods (216) are in a mode, the first threaded rod (212) is far away from the first connecting rod (216) is fixedly connected to the first connecting rod (215) and is close to the first connecting rod (215), the first limit guide rod (215) passes through the first piston (214) and is fixedly connected to the rear inner wall of the air outlet pipe of the fan (1), and the first limit guide rod (215) is in sliding connection with the first piston (214).

3. The fan damping and noise reducing device according to claim 2, wherein a plurality of groups of vent holes are formed in the side wall of the first noise reducing pipe (211) inside the air outlet pipe of the fan (1).

4. The fan vibration/noise reduction device according to claim 3, wherein the air intake flow adjusting noise reduction assembly (22) comprises a second noise reduction pipe (221), a second threaded rod (222), a second piston (223), a second limit guide rod (224), a swivel (225) and a second connecting rod (226), the outer side of the right end of the second noise reduction pipe (221) is fixedly connected to the inner wall of an air intake pipe of the fan (1), the middle part of the left inner wall of the second noise reduction pipe (221) is rotationally connected with the second piston (223), the outer end of the left inner wall of the second noise reduction pipe (221) is fixedly connected with the second limit guide rod (224), the second threaded rod (222) and the second limit guide rod (224) penetrate through the second piston (223), the second limit guide rod (224) is in sliding connection with the second piston (223), the second piston (222) is in threaded connection with the outer end of the second piston (223), the right end of the second piston (223) is in sliding connection with the inner wall of the second noise reduction pipe (221), the right end of the second limit guide rod (224) is rotationally connected with the right end of the second threaded rod (221) on the right end of the second air intake pipe (221), the outer ends of the second connecting rods (226) are fixedly connected to the inner wall of the swivel (225).

5. The fan vibration/noise reduction device according to claim 4, wherein the second noise reduction pipe (221) inside the air inlet pipe of the fan (1) is provided with a plurality of groups of ventilation holes.

6. The fan damping and noise reducing device according to claim 5, characterized in that the bottom of the fan (1) is fixedly connected with a damping assembly (3) for damping the vertical and horizontal positions of the fan (1).

7. The fan vibration/noise reduction device according to claim 6, wherein the vibration/noise reduction assembly (3) comprises a vertical vibration/noise reduction assembly (31) and a horizontal vibration/noise reduction assembly (32), the bottom of the fan (1) is fixedly connected with the vertical vibration/noise reduction assembly (31), the inner bottom of the vertical vibration/noise reduction assembly (31) is fixedly connected with the horizontal vibration/noise reduction assembly (32), and the top of the horizontal vibration/noise reduction assembly (32) is fixedly connected to the bottom of the fan (1).

8. The fan damping and noise reducing device according to claim 7, wherein the vertical damping component (31) comprises a limiting slide column (311), limiting sleeves (312), supporting bottom plates (313) and first springs (314), the limiting slide column (311) is fixedly connected to four corners of the bottom of the fan (1), the limiting sleeves (312) are fixedly connected to the lower ends of the limiting slide column (311), the supporting bottom plates (313) are fixedly connected to the bottoms of the limiting sleeves (312), and a group of first springs (314) are fixedly connected between the bottoms of the fan (1) outside each group of limiting sleeves (312) and the tops of the supporting bottom plates (313).

9. The fan vibration/noise reduction device according to claim 8, wherein the upper and lower lengths of the limit strut (311) are equal to the upper and lower lengths of the notch inside the limit sleeve (312).

10. Fan vibration and noise reduction device according to claim 8 or 9, characterized in that the top outer end of the supporting base plate (313) is connected with several sets of horizontal vibration damping components (32).