CN210531248U - A fan muffler - Google Patents

Abstract

The embodiment of the application discloses fan muffler. The fan silencer can include an outer shell, an inner shell, and a sound attenuation layer. The outer shell body is sleeved outside the inner shell body, and the outer shell body and the inner shell body are coaxially arranged at intervals, so that an installation space is formed between the outer shell body and the inner shell body. Wherein a passage axially penetrating the inner housing is formed in the inner housing, and a plurality of meshes are uniformly distributed on the inner housing so that the installation space communicates with the passage. The noise elimination layer is arranged between the outer shell and the inner shell. The silencing layer comprises a silencing structure layer and a fireproof net cloth layer, wherein the silencing structure layer is arranged between the outer shell and the inner shell, and the fireproof net cloth layer is arranged between the silencing structure layer and the inner shell. The fan silencer of the embodiment of the application has the following possible beneficial effects including but not limited to the following: the fan muffler of the embodiment of the application can effectively reduce the noise of the fan.

Description

A fan muffler

technical field

The present application relates to the technical field of fans, in particular to a fan muffler.

Background technique

The fan is a machine that increases the gas pressure and discharges the gas by relying on the input mechanical energy.

The existing fan is noisy when working, so how to reduce the noise of the fan has always been a problem that people hope to solve.

Utility model content

In view of the deficiencies of the prior art, the present application provides a fan muffler. The fan muffler may include: an outer casing, an inner casing and a sound-absorbing layer.

The outer casing is sleeved outside the inner casing, and the outer casing and the inner casing are coaxially spaced apart, so that an installation space is formed between the outer casing and the inner casing. Wherein, a channel is formed in the inner shell to penetrate through the inner shell in the axial direction, and a plurality of mesh holes are evenly distributed on the inner shell, so that the installation space is communicated with the channel.

The sound-absorbing layer is disposed between the outer casing and the inner casing. Wherein, the sound-absorbing layer includes a sound-absorbing structural layer disposed between the outer casing and the inner casing, and a fireproof mesh cloth layer disposed between the sound-absorbing structural layer and the inner casing.

According to some preferred embodiments of the present application, the sound-absorbing structure layer is a sound-absorbing material layer.

According to some preferred embodiments of the present application, the sound-absorbing material layer is a sound-absorbing sponge layer, a sound-absorbing glass wool layer and/or a composite damping sound-insulating board layer.

According to some preferred embodiments of the present application, the sound-absorbing structure layer includes a plurality of wedge structures. The wedge structure is made of sound-absorbing material. Wherein, a plurality of the wedge structural members are arranged on the inner wall of the outer casing, and the plurality of the wedge structural members are arranged and combined so that the surface facing the channel has an uneven structure. By adopting the above-mentioned muffler structure, when in use, the air outlet of the fan is connected to the fan muffler, and after the noise generated by the fan enters the fan muffler with the airflow, the muffler structure layer can almost completely absorb the sound waves incident on the surface of the wedge structure. be absorbed, so that it has a better noise reduction effect.

According to some preferred embodiments of the present application, the sound-absorbing material is one of a sound-absorbing sponge and a sound-absorbing glass wool.

According to some preferred embodiments of the present application, the wedge structure is in the shape of a triangular pyramid, a quadrangular pyramid, a cone, a triangular pyramid, a quadrangular pyramid, a truncated cone or a triangular prism.

According to some preferred embodiments of the present application, flanges are respectively provided at both ends of the channel of the inner casing.

According to some preferred embodiments of the present application, the flange is integrally formed with the inner housing, so that the flange is formed as a common plate flange.

According to some preferred embodiments of the present application, the outer casing is a cuboid box made of 0.8mm galvanized steel sheet. Installation windows are provided on both sides of the rectangular box body in the length direction. The inner housing is mounted on the outer housing through the mounting window. In addition, a first sound-absorbing paint layer is provided on the outer casing.

According to some preferred embodiments of the present application, the inner casing is a rectangular parallelepiped box made of galvanized mesh plate with two ends open. And a second sound-absorbing paint layer is arranged on the surface of the inner shell.

Compared with the prior art, the fan muffler of the embodiment of the present application has the following beneficial effects: the fan muffler of the embodiment of the present application can effectively reduce the noise of the fan.

Some of the additional features of the present application may be illustrated in the following description. Some of the additional features of the present application will become apparent to those skilled in the art from a review of the following description and the corresponding drawings, or from an understanding of the production or operation of the embodiments. The features disclosed herein can be realized and attained through the practice or use of the various methods, instrumentalities, and combinations of the specific embodiments described below.

Description of drawings

The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute a limitation to the present application. In the various figures, the same reference numerals denote the same components. in,

1 is a schematic structural diagram of a fan muffler according to some embodiments of the present application;

2 is a cross-sectional view of a fan muffler according to some embodiments of the present application;

3 is a schematic structural diagram of an outer casing in a fan muffler according to some embodiments of the present application;

FIG. 4 and FIG. 5 are schematic diagrams of sound-absorbing structural layers in a fan muffler according to some embodiments of the present application.

List of reference signs

100-outer shell

110-Installation window

200-Inner shell

210-channel

300-Anechoic layer

310-Anechoic structure layer

311 - Wedge structure

320-Fireproof mesh layer

400-Flange

Detailed ways

In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only The embodiments are part of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present application.

It should be noted that, if the terms "first", "second", etc. are involved in the description and claims of the present application and the above drawings, they are used to distinguish similar objects, and are not necessarily used to describe a specific order. or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances for the embodiments of the application described herein. Furthermore, if the terms "comprising" and "having" and any variations thereof are referred to, it is intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to the explicit Instead, those steps or elements listed may include other steps or elements not expressly listed or inherent to the process, method, product or apparatus.

In this application, if the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", " "Center", "vertical", "horizontal", "horizontal", "longitudinal", etc., the orientation or positional relationship they indicate is based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily used to better describe the present application and its embodiments, and are not intended to limit the fact that the indicated device, element, or component must have a particular orientation, or be constructed and operated in a particular orientation.

In addition, some of the above-mentioned terms may be used to express other meanings besides orientation or positional relationship. For example, the term "on" may also be used to express a certain attachment or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific situations.

In addition, in this application, if the terms "installed", "set up", "provided with", "connected", "connected", "socketed", etc. are referred to, they should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral structure; it may be a mechanical connection, or an electrical connection; it may be directly connected, or indirectly connected through an intermediary, or between two devices, elements, or components. internal communication. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

The embodiment of the present application discloses a fan muffler.

As shown in FIGS. 1 and 2 , the fan muffler may include an outer casing 100 , an inner casing 200 and a sound-absorbing layer 300 .

In some embodiments, as shown in FIG. 3 , the outer casing 100 may have a cuboid box structure. Specifically, the outer casing 100 may be a rectangular box body made of galvanized steel sheet. Preferably, the thickness of the galvanized steel sheet is 0.8 mm.

Installation windows 110 are provided on both sides of the rectangular box body in the length direction. The installation windows on both sides of the rectangular box body in the length direction are arranged opposite to each other, and are used for both ends of the inner casing 200 to pass through.

Further, a first sound-absorbing paint layer is disposed on the surface of the outer casing 100 . Specifically, the first sound-absorbing paint layer may be a sound-absorbing layer formed on the surface of the outer casing 100 by spraying the sound-absorbing paint.

As shown in FIG. 1 and FIG. 2 , the outer casing 100 is sleeved outside the inner casing 200 . Illustratively, in the assembled state, the inner housing 200 is mounted on the outer housing 100 through the mounting window. Specifically, the inner casing 200 is installed on the outer casing 100 through the installation windows on both sides of the outer casing 100 in the length direction, so that the outer casing 100 is sleeved outside the inner casing 200 .

The outer casing 100 and the inner casing 200 are coaxially spaced apart, so that an installation space is formed between the outer casing 100 and the inner casing 200 . The installation space is used to install the sound-absorbing layer 300 .

In some embodiments, the inner casing 200 may have a rectangular parallelepiped box structure. In addition, both ends of the inner casing 200 having a cuboid box structure are open, so that a channel 210 is formed in the inner casing 200 , which penetrates through the inner casing 200 in the axial direction, that is, the length direction. And a plurality of mesh holes are evenly distributed on the inner casing 200 , so that the installation space is communicated with the channel 210 .

Specifically, the inner casing 200 may be a rectangular parallelepiped box body made of galvanized mesh plate with openings at both ends. By using the galvanized mesh plate, it is possible to form a plurality of mesh holes in the inner case 200 .

Further, a second sound-absorbing paint layer is provided on the surface of the inner shell 200 . Specifically, the second sound-absorbing paint layer may be a sound-absorbing layer formed on the surface of the inner casing 200 by spraying the sound-absorbing paint.

In some embodiments, flanges 400 are respectively provided at both ends of the channel 210 of the inner casing 200 . Exemplarily, the flange 400 may be integrally formed with the inner housing 200 so that the flange 400 is formed as a common plate flange.

As shown in FIG. 2 , the sound-absorbing layer 300 is disposed between the outer casing 100 and the inner casing 200 . The sound-absorbing layer 300 may include a sound-absorbing structure layer 310 disposed between the outer casing 100 and the inner casing 200 and a fireproof mesh cloth layer 320 disposed between the sound-absorbing structural layer 310 and the inner casing 200 .

In some embodiments, the sound-absorbing structure layer 310 is a sound-absorbing material layer. Exemplarily, the sound-absorbing material layer may be a sound-absorbing sponge layer, a sound-absorbing glass wool layer and/or a composite damping sound-insulating board layer.

In some embodiments, as shown in FIGS. 4 and 5 , the sound-absorbing structure layer 310 includes a plurality of wedge structures 311 .

Exemplarily, the wedge structure 311 is in the shape of a triangular pyramid, a quadrangular pyramid, a cone, a triangular pyramid, a quadrangular pyramid, a truncated cone or a triangular prism.

Further, the wedge structure 311 is made of sound-absorbing material, so that the wedge structure 311 is formed as a sound-absorbing wedge. Exemplarily, the sound-absorbing material can be a porous sound-absorbing material. For example, the sound absorbing material may be one of sound absorbing sponge and sound absorbing glass wool.

The plurality of wedge structures 311 are arranged on the inner wall of the outer casing 100, and the plurality of wedge structures 311 are arranged and combined, so that the surface facing the channel 210 has an uneven structure, so that the incident will be incident on the surface of the wedge structure 311. almost all of the sound waves are absorbed.

Exemplarily, as shown in FIG. 4 and FIG. 5 , in this embodiment, the wedge structure 311 may adopt a triangular column structure. During installation, one edge of the wedge structure 311 of the triangular-columnar structure faces the inner casing 200 , and the surface opposite to the edge is disposed on the inner wall of the outer casing. And in the installed state, two adjacent wedge structures 311 are arranged perpendicular to each other.

When in use, the air outlet of the fan is connected to the fan muffler through the flange 400. After the noise generated by the fan enters the fan muffler with the airflow, the muffler structure layer 310 can almost completely absorb the sound waves incident on the surface of the wedge structure 311. be absorbed, so that it has a better noise reduction effect.

It is to be noted that all features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any way except mutually exclusive features and/or steps.

The possible beneficial effects of the fan muffler in the embodiment of the present application include but are not limited to the following: the fan muffler in the embodiment of the present application can effectively reduce the noise of the fan.

The above specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the scope of the present invention. within the scope of protection. It should be understood by those skilled in the art that the description of the present utility model and the accompanying drawings are illustrative rather than limiting to the claims. The protection scope of the present invention is defined by the claims and their equivalents.

Claims (10)

1. A fan silencer, comprising:

an outer housing (100);

the outer shell (100) is sleeved outside the inner shell (200), and the outer shell (100) and the inner shell (200) are coaxially arranged at intervals, so that an installation space is formed between the outer shell (100) and the inner shell (200);

a channel (210) axially penetrating through the inner shell (200) is formed in the inner shell (200), and a plurality of meshes are uniformly distributed on the inner shell (200) so that the installation space is communicated with the channel (210);

and the number of the first and second groups,

a sound-damping layer (300), the sound-damping layer (300) being disposed between the outer shell (100) and the inner shell (200);

the silencing layer (300) comprises a silencing structure layer (310) arranged between the outer shell (100) and the inner shell (200) and a fireproof mesh fabric layer (320) arranged between the silencing structure layer (310) and the inner shell (200).

2. The fan silencer according to claim 1, wherein the sound-absorbing structure layer (310) is a sound-absorbing material layer.

3. The fan silencer according to claim 2, wherein the sound-absorbing material layer is a sound-absorbing sponge layer, a sound-absorbing glass wool layer and/or a composite damping sound-insulating plate layer.

4. A fan silencer according to claim 1, wherein the sound-deadening structure layer (310) includes a plurality of wedge structures (311); the wedge structure (311) is made of sound absorption material;

the wedge structural members (311) are arranged on the inner wall of the outer shell (100), and the wedge structural members (311) are arranged and combined to enable one surface facing the channel (210) to be of an uneven structure.

5. The fan silencer of claim 4, wherein the sound absorbing material is one of a sound absorbing sponge and a sound absorbing glass wool.

6. The fan silencer according to claim 4, wherein the wedge structure (311) is in the shape of a triangular pyramid, a quadrangular pyramid, a cone, a triangular frustum, a quadrangular frustum, a cone frustum, or a triangular prism.

7. Blower muffler according to one of the claims 1 to 6, characterized in that flanges (400) are provided at both ends of the channel (210) of the inner casing (200), respectively.

8. A fan silencer according to claim 7, characterized in that the flange (400) is integrally formed with the inner casing (200) such that the flange (400) is formed as a co-planar flange.

9. Blower silencer according to one of claims 1 to 6, characterized in that the outer casing (100) is a cuboid box made of 0.8mm galvanized steel;

mounting windows are arranged on two sides of the rectangular box body in the length direction; the inner housing (200) is mounted on the outer housing (100) through the mounting window;

and a first sound absorption coating layer is arranged on the outer shell (100).

10. The fan silencer according to claim 9, wherein the inner housing (200) is a rectangular box body made of galvanized mesh plates and opened at two ends;

and a second sound absorption paint layer is arranged on the surface of the inner shell (200).

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