CN212959268U

CN212959268U - Noise reduction mechanism of centrifugal fan

Info

Publication number: CN212959268U
Application number: CN202021300312.1U
Authority: CN
Inventors: 叶顺富; 郭诗雨; 朱明龙
Original assignee: Liaoning Huatong Fan Co ltd
Current assignee: Liaoning Huatong Fan Co ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-04-13
Anticipated expiration: 2030-07-06

Abstract

The utility model discloses a centrifugal fan falls mechanism of making an uproar, including the spiral case storehouse, the shape in spiral case storehouse sets up to open-sided cavity structure, and the inside in spiral case storehouse is provided with inhales the voice coil loudspeaker voice coil, inhales the mode fixed connection through the joint between voice coil loudspeaker voice coil and the spiral case storehouse, and the air outlet inboard in spiral case storehouse is provided with the abatvoix, through joint mode fixed connection between abatvoix and the spiral case storehouse, and the bottom in spiral case storehouse is provided with the support, through welding mode fixed connection between support and the spiral case storehouse. The utility model has the characteristics of rational in infrastructure, equipment convenience, through the voice coil loudspeaker voice coil of inhaling that sets up and mutually supporting between the abatvoix to produced noise absorbs when can be to the high-speed pivoted of fan leaf, and then can reduce the produced noise of centrifuge in work.

Description

Noise reduction mechanism of centrifugal fan

Technical Field

The utility model relates to a centrifugal fan technical field specifically is a centrifugal fan falls mechanism of making an uproar.

Background

The centrifugal fan is a machine which increases gas pressure and discharges gas by means of input mechanical energy, and is a driven fluid machine; centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.

The applicant of the utility model finds that the centrifugal fan can generate noise in the working process due to high-speed flow of air, thereby generating great sound and polluting the environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a centrifugal fan's mechanism of making an uproar falls aims at improving centrifugal fan because the air flows at a high speed in the course of the work, can send the noise, produces great sound, the problem of polluted environment.

The utility model discloses a realize like this:

the utility model provides a mechanism of making an uproar falls in centrifugal fan, includes the spiral case storehouse, and the shape in spiral case storehouse sets up to open-sided cavity structure, and the inside in spiral case storehouse is provided with inhales the voice coil loudspeaker voice coil, inhales the mode fixed connection through the joint between voice coil loudspeaker voice coil and the spiral case storehouse, and the air outlet inboard in spiral case storehouse is provided with the abatvoix, through joint mode fixed connection between abatvoix and the spiral case storehouse, and the bottom in spiral case storehouse is provided with the support, passes through welding mode fixed connection between support and the spiral case.

Further, the inboard of inhaling the voice coil loudspeaker voice coil is provided with inhales the sound strip, inhale the sound strip and inhale fixed connection between the sound circle, and inhale sound strip equidistant distribution, inhale the spacing fixture block of side fixedly connected with of voice coil loudspeaker voice coil, spacing fixture block centers on the axle center equidistant distribution who inhales the voice coil loudspeaker voice coil, the side of inhaling the voice coil loudspeaker voice coil runs through and has seted up the ventilation hole, be provided with through the inboard of inhaling the sound circle and inhale the sound strip, and let and inhale sound strip equidistant distribution, be the produced noise when absorbing the fan leaf at high-speed pivoted, through the spacing fixture block of side fixedly connected with who inhales the sound circle, be for the convenience of letting to inhale the sound circle and fix the inboard in spiral case storehouse through the mode of joint, run through and seted up.

Further, honeycomb holes have been seted up in the outside of abatvoix, and honeycomb holes evenly distributed is for the convenience of absorbing the air outlet because the produced noise of air flow through setting up the abatvoix, through having seted up honeycomb holes in the outside of abatvoix, is the sound effect of inhaling in order to improve the abatvoix.

Further, the side center department in spiral case storehouse runs through and has seted up the spacing hole of axle center, and the inside wall symmetry in spiral case storehouse has seted up first spacing draw-in groove, the spacing draw-in groove of second has been seted up to the air outlet inside wall in spiral case storehouse, the spacing hole of axle center has been seted up through running through the side center department in spiral case storehouse, be for the convenience of carrying on spacingly to the center pin of fan blade, first spacing draw-in groove has been seted up through the inside wall symmetry in spiral case storehouse, be for the convenience of prescribing a limit to the position of voice coil loudspeaker voice coil, the spacing draw-in groove of second has been seted up through the air outlet inside.

Further, the both sides of support all are provided with the fixed plate, set up to the integrated into one piece structure between fixed plate and the support, and the up end symmetry of fixed plate runs through and has seted up the fixed orifices, all is provided with the fixed plate through the both sides at the support to and run through in the up end symmetry of fixed plate and have seted up the fixed orifices, be for the convenience of letting the fixed more convenient in spiral case storehouse.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the characteristics of rational in infrastructure, equipment convenience, through the voice coil loudspeaker voice coil of inhaling that sets up and mutually supporting between the abatvoix to produced noise absorbs when can be to the high-speed pivoted of fan leaf, and then can reduce the produced noise of centrifuge in work.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a noise reduction mechanism of a centrifugal fan according to the present invention;

fig. 2 is a schematic view of a split structure of a noise reduction mechanism of a centrifugal fan according to the present invention;

fig. 3 is a schematic structural diagram of a volute chamber of a noise reduction mechanism of a centrifugal fan according to the present invention;

fig. 4 is a schematic structural diagram of a voice coil of a noise reduction mechanism of a centrifugal fan according to the present invention;

fig. 5 is a schematic structural diagram of the sound-absorbing board of the noise reduction mechanism of the centrifugal fan of the present invention.

In the figure: 1. a volute bin; 11. an axis limiting hole; 12. a first limiting clamping groove; 13. a second limiting clamping groove; 2. a voice coil; 21. a sound absorbing strip; 22. a limiting clamping block; 23. a vent hole; 3. a sound-absorbing panel; 31. honeycomb holes; 4. a support; 41. a fixing plate; 411. and (7) fixing holes.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, 2, 3, 4 and 5, a noise reduction mechanism of a centrifugal fan includes a volute chamber 1, the volute chamber 1 is shaped as a cavity structure with an opening on a side surface, a shaft center limiting hole 11 is formed through the center of the side surface of the volute chamber 1, and the inner side wall of the volute chamber 1 is symmetrically provided with a first limit clamping groove 12, the inner side wall of the air outlet of the volute chamber 1 is provided with a second limit clamping groove 13, the axial center limiting hole 11 is arranged at the center of the side surface of the volute case 1 in a penetrating way, so that the central shaft of the fan blade is limited conveniently, the first limiting clamping grooves 12 are symmetrically formed in the inner side wall of the volute chamber 1, so that the position of the voice suction coil 2 is limited, a second limiting clamping groove 13 is formed in the inner side wall of the air outlet of the volute chamber 1, so that the position of the sound-absorbing board 3 is limited in a clamping manner; the voice absorption coil 2 is arranged in the volute chamber 1, the voice absorption coil 2 is fixedly connected with the volute chamber 1 in a clamping manner, the inner side of the voice absorption ring 2 is provided with voice absorption strips 21, the voice absorption strips 21 are fixedly connected with the voice absorption ring 2, the voice absorption strips 21 are distributed at equal intervals, the side surface of the voice absorption coil 2 is fixedly connected with limiting fixture blocks 22, the limiting fixture blocks 22 are distributed at equal intervals around the axis of the voice absorption coil 2, the side surface of the voice absorption coil 2 is provided with vent holes 23 in a penetrating manner, the voice absorption strips 21 are arranged on the inner side of the voice absorption ring 2 and are distributed at equal intervals, so that the noise generated when the fan blades rotate at high speed is absorbed, the limiting fixture blocks 22 are fixedly connected with the side surface of the voice absorption ring 2, so that the voice absorption coil 2 is fixed on the inner side of the volute chamber 1 in a clamping manner, and the vent holes 23 are formed in the, to facilitate air flow;

the inner side of an air outlet of the volute bin 1 is provided with the sound-absorbing plate 3, the sound-absorbing plate 3 and the volute bin 1 are fixedly connected in a clamping mode, honeycomb holes 31 are formed in the outer side of the sound-absorbing plate 3, the honeycomb holes 31 are uniformly distributed, the sound-absorbing plate 3 is arranged to facilitate the absorption of noise generated by air flowing at the air outlet, and the honeycomb holes 31 are formed in the outer side of the sound-absorbing plate 3 to improve the sound-absorbing effect of the sound-absorbing plate 3; the bottom in spiral case storehouse 1 is provided with support 4, through welding mode fixed connection between support 4 and the spiral case storehouse 1, the both sides of support 4 all are provided with fixed plate 41, set up to the integrated into one piece structure between fixed plate 41 and the support 4, and the up end symmetry of fixed plate 41 runs through and has seted up fixed orifices 411, all be provided with fixed plate 41 through the both sides at support 4, and run through and have seted up fixed orifices 411 at the up end symmetry of fixed plate 41, it is more convenient for the fixed of letting spiral case storehouse 1 to be convenient for.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a mechanism of making an uproar falls in centrifugal fan, includes spiral case storehouse (1), its characterized in that: the utility model discloses a volute casing, including volute casing storehouse (1), mode fixed connection, sound-absorbing board (3), between sound-absorbing board (3) and volute casing storehouse (1), the bottom in volute casing storehouse (1) is provided with support (4), through welding mode fixed connection between support (4) and volute casing storehouse (1).

2. The noise reduction mechanism of the centrifugal fan according to claim 1, wherein the sound absorption strips (21) are arranged on the inner side of the sound absorption coil (2), the sound absorption strips (21) are fixedly connected with the sound absorption coil (2), the sound absorption strips (21) are distributed at equal intervals, limiting clamping blocks (22) are fixedly connected to the side surface of the sound absorption coil (2), the limiting clamping blocks (22) are distributed at equal intervals around the axis of the sound absorption coil (2), and ventilation holes (23) are formed in the side surface of the sound absorption coil (2) in a penetrating manner.

3. The noise reduction mechanism of the centrifugal fan as claimed in claim 1, wherein the sound-absorbing plate (3) is provided with honeycomb holes (31) on the outer side, and the honeycomb holes (31) are uniformly distributed.

4. The noise reduction mechanism of the centrifugal fan according to claim 1, wherein an axis limiting hole (11) is formed in the center of the side surface of the volute chamber (1) in a penetrating manner, first limiting clamping grooves (12) are symmetrically formed in the inner side wall of the volute chamber (1), and second limiting clamping grooves (13) are formed in the inner side wall of the air outlet of the volute chamber (1).

5. The noise reduction mechanism of the centrifugal fan according to claim 1, wherein fixing plates (41) are arranged on two sides of the bracket (4), an integrally formed structure is arranged between the fixing plates (41) and the bracket (4), and fixing holes (411) are symmetrically formed in the upper end face of each fixing plate (41) in a penetrating manner.