Silent centrifugal fan

Abstract

The utility model relates to the technical field of centrifugal fans, in particular to a mute type centrifugal fan which comprises a main body, an air inlet barrel is arranged on the main body, the main body is connected with an air outlet channel, a connecting frame is arranged at the bottom of the main body, a damping assembly is arranged at the top end of the connecting frame, a filter plate is arranged in the air inlet barrel, and the filter plate is connected with the air outlet channel. A filter plate is arranged in the air outlet channel and connected with a first mounting sleeve, a first perforated plate is arranged on one side face of the filter plate, first sound absorption cotton is arranged on one side face of the first perforated plate, a second perforated plate is arranged in the air outlet channel and connected with a second mounting sleeve, and second sound absorption cotton is arranged on one side face of the second perforated plate. By means of the structure of the mounting sleeve, the perforated plate, the sound absorption cotton, the air outlet channel, the sound absorption cotton, the connecting frame and the damping assembly, the problems that in the operation process of a traditional centrifugal fan, large noise and vibration are often generated, the performance and the service life of equipment are affected, and discomfort is caused to the surrounding environment and a user are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal fan technical field, concretely is a kind of mute centrifugal fan. BACKGROUND

[0002] Fan in work, airflow enters blade space by fan shaft, then under the drive of impeller, one aspect rotates with impeller;Another aspect improves energy under the action of inertia, leaves impeller along radial direction, and the fan that works by the centrifugal force produced is called centrifugal fan.

[0003] Traditional centrifugal fan in the operation process often generates greater noise and vibration, which not only affects the performance and life of the equipment, but also causes discomfort to the surrounding environment and users.

[0004] Therefore, it is particularly important to design a mute centrifugal fan to change the above technical defects and improve the overall practicability. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of mute centrifugal fan to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of mute centrifugal fan, including main body, the main body is equipped with air inlet cylinder, the main body is connected air outlet passage, the bottom of the main body is equipped with connecting frame, the top of the connecting frame is equipped with damping component, the inside of the air inlet cylinder is equipped with filter plate, the filter plate is connected first installation sleeve, the side surface of the filter plate is equipped with first perforated plate, the side surface of the first perforated plate is equipped with first sound-absorbing cotton, the inside of the air outlet passage is equipped with second perforated plate, the second perforated plate is connected second installation sleeve, the side surface of the second perforated plate is equipped with second sound-absorbing cotton.

[0008] As the preferred scheme of the utility model, the first installation sleeve, second installation sleeve are equipped with embedded entrance, and the embedded entrance is respectively matched with air inlet cylinder, air outlet passage.

[0009] As the preferred scheme of the utility model, the first installation sleeve, second installation sleeve and air inlet cylinder, air outlet passage are fixed by bolt position.

[0010] As the preferred scheme of the utility model, the damping component is composed of multilayer shock-absorbing material structure, including high-density microcellular foam material, the high-density microcellular foam material top is equipped with high-damping viscoelastic material, the top of the high-damping viscoelastic material is equipped with high-strength fiber net.

[0011] As the preferred scheme of the utility model, the outer surface of the main body is equipped with a soundproof cover, the soundproof cover is filled with sound-absorbing material inside, which is used for absorbing external noise generated when the main body operates.

[0012] As the preferred scheme of the utility model, the perforations on the first perforated plate and the second perforated plate are uniformly distributed, which is used for realizing sound-absorbing effect and airflow passing.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] In the utility model, the sound-absorbing centrifugal fan is provided with the structure of the mounting sleeve, the perforated plate, the sound-absorbing cotton, the air outlet channel, the sound-absorbing cotton, the connecting frame and the damping assembly, the perforated plate and the sound-absorbing cotton are arranged inside the air inlet cylinder and the air outlet channel for reducing noise of vortex, the mounting sleeve is connected between the air inlet cylinder and the air outlet channel, the sound-absorbing cover is arranged outside the main body, the damping assembly is arranged on the connecting frame, which is used for reducing noise generated when the main body operates, the problems that the traditional centrifugal fan often generates large noise and vibration during operation, which not only affects the performance and service life of the equipment, but also causes discomfort to the surrounding environment and the user are solved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structural diagram of the utility model;

[0016] Figure 2 It is the connecting frame assembly schematic diagram of the utility model;

[0017] Figure 3 It is the air inlet cylinder plane schematic diagram of the utility model;

[0018] Figure 4 It is the air inlet cylinder and air outlet channel internal component schematic diagram of the utility model.

[0019] In the drawing: 1, main body; 2, air inlet cylinder; 201, filter plate; 202, first mounting sleeve; 203, first perforated plate; 205, first sound-absorbing cotton; 3, air outlet channel; 301, second perforated plate; 302, second mounting sleeve; 303, second sound-absorbing cotton; 4, connecting frame; 5, damping assembly. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] For the purpose of facilitating the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. Several embodiments of the present application are given. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present application is more complete and thorough.

[0022] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein, the terms "vertical", "horizontal", "left", "right", and the like are merely used for the purpose of illustration.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0024] Embodiments, please refer to Figures 1-4 The present application provides a technical solution:

[0025] The utility model provides a kind of mute centrifugal fan, including main body 1, which is provided with air inlet cylinder 2, main body 1 is connected air outlet channel 3, the bottom of main body 1 is equipped with connecting frame 4, the top of connecting frame 4 is equipped with damping component 5, the inside of air inlet cylinder 2 is equipped with filter plate 201, filter plate 201 connects first mounting sleeve 202, one side of filter plate 201 is equipped with first perforated plate 203, the side of first perforated plate 203 is equipped with first sound-absorbing cotton 205, the inside of air outlet channel 3 is equipped with second perforated plate 301, second perforated plate 301 connects second mounting sleeve 302, the side of second perforated plate 301 is equipped with second sound-absorbing cotton 303, after main body 1, air enters the inside of main body by air inlet cylinder 2, air is purified first by filter plate 201, then passes through first perforated plate 203 with evenly distributed perforation, first sound-absorbing cotton 205 on the side of first perforated plate 203 absorbs noise generated by airflow, purified air continues to flow in main body 1, and is finally discharged through air outlet channel 3, in the process of discharging, air also passes through second perforated plate 301 with evenly distributed perforation, and second sound-absorbing cotton 303 on the back side of second perforated plate 301 further reduces noise, and in addition, the inside of soundproof cover on the surface of main body is filled with sound-absorbing material, further absorbing external noise generated by fan operation, to ensure the mute operation of the whole fan.

[0026] Wherein the first mounting sleeve 202, second mounting sleeve 302 are provided with embedded entrances, and the embedded entrances are respectively matched with the air inlet cylinder 2 and the air outlet channel 3, the matching of the embedded entrances with the air inlet cylinder 2 and the air outlet channel 3 ensures the close fit between the components, reduces airflow leakage and noise transmission, the first mounting sleeve 202 and the second mounting sleeve 302 are fixed in position with bolts between the air inlet cylinder 2 and the air outlet channel 3, to facilitate the later disassembly and cleaning of the filter plate and the perforated plate, the damping component 5 is composed of multiple layers of damping material structure, including high-density microcellular foam material, high-density microcellular foam material is provided with high-damping viscoelastic material at the top, and high-damping viscoelastic material is provided with high-strength fiber mesh at the top, to absorb and disperse vibration energy from fan operation, reduce the impact of vibration on the equipment itself and the surrounding environment, the surface of main body 1 is provided with a soundproof cover, the inside of the soundproof cover is filled with sound-absorbing material, to absorb external noise generated by main body 1 operation, the perforations on the first perforated plate 203 and the second perforated plate 301 are evenly distributed, to achieve sound-absorbing effect and airflow passing.

[0027] The utility model discloses a working procedure: when using this kind of mute centrifugal fan, first, the main body 1 starts, air enters the inside of main body through the air inlet tube 2, at this time, air first carries out preliminary purification through filter plate 201, then passes through the first perforated plate 203 that has evenly distributed perforation, the first sound-absorbing cotton 205 of first perforated plate 203 one side absorbs the noise of the airflow, and the purified air continues to flow in the main body 1, and finally is discharged through the air outlet channel 3, in the air outlet process, air will also pass through the second perforated plate 301 that is provided with even perforation, and the second sound-absorbing cotton 303 of its back side further reduces the noise, simultaneously, the shock attenuation component 5 of main body 1 bottom is composed of multilayer material, including high density microcellular foam, high damping viscoelastic material and high strength fiber net, effectively absorbs and disperses the vibration energy of fan operation, reduces the influence of vibration to equipment and surrounding environment, in addition, the soundproof cover of main body outer surface is filled with sound-absorbing material inside, further absorbs the external noise of fan operation, ensures the mute operation of whole fan, wherein the soundproof cover avoids the main body 1 heat dissipation groove setting in actual situation, and the fan is the main body 1 for the existing mature technology, therefore its principle, working mode are not too much elaboration.

[0028] Although the embodiments of the utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A silencer centrifugal fan comprising a main body (1), characterized in that: The main body (1) is provided with an air inlet cylinder (2), the main body (1) is connected with an air outlet channel (3), the bottom of the main body (1) is provided with a connecting frame (4), the top end of the connecting frame (4) is provided with a damping assembly (5), the inside of the air inlet cylinder (2) is provided with a filter plate (201), the filter plate (201) is connected with a first mounting sleeve (202), one side of the filter plate (201) is provided with a first perforated plate (203), one side of the first perforated plate (203) is provided with first sound-absorbing cotton (205), the inside of the air outlet channel (3) is provided with a second perforated plate (301), the second perforated plate (301) is connected with a second mounting sleeve (302), one side of the second perforated plate (301) is provided with second sound-absorbing cotton (303).

2. A silent centrifugal fan according to claim 1, characterized in that: The first mounting sleeve (202) and the second mounting sleeve (302) are provided with embedding entrances, and the embedding entrances are respectively matched with the air inlet cylinder (2) and the air outlet channel (3).

3. The silent centrifugal fan according to claim 1, wherein: The first mounting sleeve (202) and the second mounting sleeve (302) are fixed in position with bolts with the air inlet cylinder (2) and the air outlet channel (3).

4. The silent centrifugal fan according to claim 1, wherein: The damping assembly (5) is composed of a multilayer damping material structure, including high-density microcellular foam material, the top end of the high-density microcellular foam material is provided with high-damping viscoelastic material, and the top end of the high-damping viscoelastic material is provided with a high-strength fiber net.

5. The silent centrifugal fan according to claim 1, wherein: The outer surface of the main body (1) is provided with a sound-absorbing cover, the inside of the sound-absorbing cover is filled with sound-absorbing material, which is used for absorbing external noise generated when the main body (1) operates.

6. The silent centrifugal fan according to claim 1, wherein: The perforations on the first perforated plate (203) and the second perforated plate (301) are uniformly distributed, which is used for realizing sound-absorbing effect and air flow passing.

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