Noise elimination treatment device for air suction port

Abstract

The utility model relates to the technical field of compressors, and discloses an air suction port noise elimination treatment device which comprises a compressor body, an installation cylinder is installed at an air inlet of the compressor body, a rubber pad and second noise elimination cotton are arranged between the installation cylinder and the compressor body in a padding mode, and a noise elimination assembly is installed in the installation cylinder. By means of the silencer, the problems that an existing silencer mainly reduces noise and is limited in effect by reducing the noise are solved, the generated noise can be eliminated while the noise is reduced, and therefore the silencing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, and more specifically, to an air intake silencing treatment device. Background Art

[0002] A compressor is a driven fluid machine that boosts low-pressure gas to high-pressure gas. The gas is introduced into the compressor through the air intake port for compression. When the compressor is working, a large amount of gas needs to be introduced, which makes the air flow velocity through the air intake port larger, which is easy to generate air noise and affect the use environment.

[0003] The Chinese utility model patent with application number 202120976233.0 discloses a compressor suction port muffler for a cascade refrigeration unit. The spiral suction guide reduces the occurrence of turbulence, thereby reducing the noise generated by the collision of the gas itself. At the same time, the ventilation pipe is set as a spring-fixed suspension structure, and the propagation of the air pipe collision noise is prevented by reducing the vibration of the air pipe. However, it cannot completely prevent the generation of noise, and lacks the effect of eliminating the noise that has already been generated, so that the noise reduction effect is limited. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an air intake silencer processing device with better noise reduction effect.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A suction port silencing treatment device comprises a compressor body, an air inlet of the compressor body is equipped with a mounting tube, a rubber pad and silencing cotton are arranged between the mounting tube and the compressor body, a silencing assembly is installed in the mounting tube, and a drainage hood is threadedly connected to the air inlet end of the mounting tube.

[0007] The utility model is further configured as follows: the silencer assembly includes a resonance tube, a plurality of resonance cavities are opened on the tube wall of the resonance tube, the plurality of resonance cavities are divided into different apertures and hole depths, one end of the resonance tube is connected to a drainage cover, a resistive net is arranged on the opening of the other end of the resonance tube, and silencer cotton is filled between the tube wall of the resonance tube and the inner wall of the mounting tube.

[0008] The utility model is further configured as follows: the inner wall of one end of the drainage cover away from the installation tube is configured as a bell mouth, the small diameter end of the bell mouth faces the installation tube, and the opening of the small diameter end of the bell mouth is covered with a filter screen.

[0009] The present utility model is further configured as follows: The installation cylinder includes a cylinder body. One end of the cylinder body facing the compressor body is provided with a flange, and the flange is connected to the compressor body by a plurality of bolts. The outer wall of the other end of the cylinder body is provided with an external thread, and the drainage cover is connected to the external thread. A flow guiding block is arranged inside the cylinder body. The flow guiding block is in a horn shape, and the small-diameter end of the flow guiding block is connected to the outlet of the sound absorption component.

[0010] The present utility model is further configured as follows: The screw head and nut of the bolt are respectively pressed against the inner wall of the outer shell of the compressor body and the surface of the flange. A rubber sleeve is arranged between the stud of the bolt and the compressor body and the flange.

[0011] The advantages of the present utility model are:

[0012] 1. A sound absorption component is arranged inside the installation cylinder. By cooperating with the resonance tube and the sound absorption cotton I, most of the low-frequency noise in the gas can be eliminated. At the same time, a resistive net is arranged at the bottom, and most of the medium- and high-frequency noise can be eliminated through resistive sound absorption, thereby eliminating the noise generated by the impact of the gas itself;

[0013] 2. The intake side of the installation cylinder is threadedly connected with a drainage cover. The drainage cover is provided with a flared opening. The end of the sound absorption component is connected to the flow guiding block, and the flow guiding block is also in a horn shape. The flared opening of the drainage cover and the flow guiding block both have a guiding effect on the air flow, which can reduce the impact of the gas on the intake port assembly, thereby reducing the generation of noise;

[0014] 3. The installation cylinder and the compressor body are connected by bolts. A rubber pad and sound absorption cotton II are arranged between the flange and the compressor body. A rubber sleeve is arranged between the bolt and the bolt hole, thereby reducing the mutual transmission of vibration and noise between the installation cylinder and the compressor body and reducing noise. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0016] Figure 2 Along Figure 1 The sectional view taken along the line A-A shown;

[0017] Figure 3 For Figure 2 The enlarged view of part B shown;

[0018] In the figure: 1. Compressor body; 2. Installation cylinder; 21. Flange; 22. Cylinder body; 23. Flow guiding block; 24. External thread; 3. Drainage cover; 31. Flared opening; 32. Filter screen; 4. Sound absorption component; 41. Resonance tube; 42. Resistive net; 43. Sound absorption cotton I; 5. Bolt; 6. Rubber sleeve; 7. Rubber pad; 8. Sound absorption cotton II. Detailed implementation mode

[0019] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will describe the present utility model in detail with reference to the drawings and in combination with the embodiments.

[0020] It should be pointed out that unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0021] In the present utility model, unless otherwise stated, the orientations such as "upper and lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left and right" are usually in the left and right shown in the drawings; "inside and outside" refer to the inside and outside of the contour of each component itself, but the above orientation terms are not used to limit the present utility model.

[0022] Please refer to Figures 1-3 , the present utility model provides the following technical solutions:

[0023] An air inlet silencing treatment device includes a compressor body 1. A mounting cylinder 2 is installed at the air inlet of the compressor body 1. A rubber pad 7 and a second sound-absorbing cotton 8 are provided between the mounting cylinder 2 and the compressor body 1, which can prevent the compressor body 1 and the mounting cylinder 2 from affecting each other, block the transmission of noise and vibration bidirectionally, and improve the silencing effect;

[0024] A silencing component 4 is installed in the mounting cylinder 2. The silencing component 4 includes a resonance tube 41 and a resistive mesh 42. Sound-absorbing cotton 43 is filled between the tube wall of the resonance tube 41 and the inner wall of the mounting cylinder 2. The resistive mesh 42 is arranged at the bottom opening of the resonance tube 41. The resonance tube 41 can eliminate most of the low-frequency noise in the gas through cavity resonance, and cooperate with the sound-absorbing cotton 43 to absorb the noise. The resistive mesh 42 is made of a porous material, and most of the medium- and high-frequency noise can be absorbed when the air flow passes through, so as to have a certain elimination effect on the full-frequency noise and improve the silencing effect;

[0025] The air inlet end of the mounting cylinder 2 is threadedly connected with a diversion cover 3. The diversion cover 3 guides the air flow entering the mounting cylinder 2, thereby reducing the occurrence of turbulence and reducing the generation of noise.

[0026] A plurality of resonance cavities are opened on the tube wall of the resonance tube 41. The plurality of resonance cavities are provided with different pore diameters and pore depths. The resonance cavities with different pore diameters and pore depths have different elimination effects on noises with different frequencies, and improve the coverage rate of low-frequency noise elimination.

[0027] One end of the air guide cover 3 facing away from the mounting cylinder 2 has an inner wall configured as a flared opening 31. The small-diameter end of the flared opening 31 faces the mounting cylinder 2 and is connected to the upper end of the resonance tube 41. A filter screen 32 is covered on the opening of the small-diameter end of the flared opening 31, which can filter the intake air, thus ensuring clean intake air. When the filter screen 32 is dirty, the air guide cover 3 can be unscrewed for cleaning, and the operation is convenient.

[0028] The mounting cylinder 2 includes a cylinder body 22. One end of the cylinder body 22 facing the compressor body 1 is provided with a flange 21. The flange 21 is connected to the compressor body 1 by a plurality of bolts 5. An external thread 24 is provided on the outer wall of the other end of the cylinder body 22, and the air guide cover 3 is connected to the external thread 24. A flow guide block 23 is arranged inside the cylinder body 22. The flow guide block 23 is in a flared shape. The small-diameter end of the flow guide block 23 is connected to the outlet of the sound-absorbing component 4. After the air flow passes through the resistive mesh 42, it is guided and diffused by the flow guide block 23, reducing the generation of turbulent flow and the impact of the air flow on the cylinder body 22, thereby reducing the generation of noise.

[0029] The screw head and nut of the bolt 5 are respectively pressed against the inner wall of the housing of the compressor body 1 and the surface of the flange 21, thereby fixing the mounting cylinder 2 on the compressor body 1. A rubber sleeve 6 is arranged between the stud of the bolt 5 and the compressor body 1 and the flange 21, that is, the stud and the screw hole are connected through the rubber sleeve 6. Together with the rubber pad 7 and the sound-absorbing cotton II 8, the vibration and noise transmission between the compressor body 1 and the mounting cylinder 2 are blocked.

[0030] Specifically, a sound-absorbing component 4 is arranged inside the mounting cylinder 2. By cooperating with the resonance tube 41 and the sound-absorbing cotton I 43, most of the low-frequency noise in the gas can be eliminated. At the same time, a resistive mesh 42 is arranged at the bottom, and most of the medium- and high-frequency noise can be eliminated through resistive sound absorption, thereby eliminating the noise generated by the impact of the gas itself.

[0031] The air intake side of the mounting cylinder 2 is threadedly connected with an air guide cover 3. The air guide cover 3 is provided with a flared opening 31. The end of the sound-absorbing component 4 is connected to the flow guide block 23. The flow guide block 23 is also in a flared shape. The flared opening 31 of the air guide cover 3 and the flow guide block 23 both have a guiding effect on the air flow, which can reduce the impact of the gas on the air intake port assembly, thereby reducing the generation of noise.

[0032] The mounting cylinder 2 is connected to the compressor body 1 by bolts 5. A rubber pad 7 and a sound-absorbing cotton II 8 are provided between the flange 21 and the compressor body 1. A rubber sleeve 6 is arranged between the bolt 5 and the bolt hole, thereby reducing the mutual transmission of vibration and noise between the mounting cylinder 2 and the compressor body 1 and reducing the noise.

[0033] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein.

[0036] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An intake port noise reduction processing device, comprising a compressor body (1), characterized in that: An installation cylinder (2) is installed at the air inlet of the compressor body (1). A rubber gasket (7) and a second sound-absorbing cotton (8) are provided between the installation cylinder (2) and the compressor body (1). A sound-absorbing component (4) is installed in the installation cylinder (2). The air inlet end of the installation cylinder (2) is threadedly connected to a diversion cover (3).

2. The noise elimination processing device for an air inlet according to claim 1, wherein: The sound-absorbing component (4) includes a resonance tube (41). A number of resonance cavities are formed in the wall of the resonance tube (41). The resonance cavities are divided into different pore diameters and depths. One end of the resonance tube (41) is connected to the diversion cover (3). A resistive mesh (42) is provided at the opening of the other end of the resonance tube (41). Sound-absorbing cotton one (43) is filled between the wall of the resonance tube (41) and the inner wall of the installation cylinder (2).

3. The noise elimination processing device for the air inlet according to claim 1, characterized in that: The inner wall of the end of the diversion cover (3) facing away from the installation cylinder (2) is provided with a flared opening (31). The small-diameter end of the flared opening (31) faces the installation cylinder (2). A filter screen (32) is provided at the opening of the small-diameter end of the flared opening (31).

4. The noise elimination processing device for an air inlet according to claim 1, characterized in that: The installation cylinder (2) includes a cylinder body (22). One end of the cylinder body (22) facing the compressor body (1) is provided with a flange (21). The flange (21) is connected to the compressor body (1) by a number of bolts (5). External threads (24) are provided on the outer wall of the other end of the cylinder body (22). The diversion cover (3) is connected to the external threads (24). A diversion block (23) is provided in the cylinder body (22). The diversion block (23) is in a flared shape. The small-diameter end of the diversion block (23) is connected to the outlet of the sound-absorbing component (4).

5. The noise elimination processing device for an air inlet according to claim 4, characterized in that: The screw head and nut of the bolt (5) are respectively pressed against the inner wall of the outer shell of the compressor body (1) and the surface of the flange (21). A rubber sleeve (6) is provided between the stud of the bolt (5) and the compressor body (1) and the flange (21).

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