Multi-channel air flow distribution air suction silencer
By designing a multi-channel airflow distribution structure, including filter cotton and multi-stage channel silencing, the problems of impurity residue and low silencing efficiency in existing intake silencers are solved. The design of the multi-channel airflow distribution structure achieves efficient impurity filtration and high silencing efficiency of the silencer.
Patent Information
- Application Number
- CN202520007641.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-03
AI Technical Summary
When using existing intake silencers, impurities in the airflow are easily left behind, resulting in low silencing efficiency. Furthermore, sound waves collide and reflect within the chamber, causing them to cancel each other out, leading to poor noise reduction.
The design incorporates a multi-channel airflow distribution structure, including an air inlet with filter cotton, a limiting plate and a limiting ring, and a multi-channel silencer body. Impurities are filtered through the filter cotton, and the airflow is dispersed to reduce noise. The multi-channel design is used for noise reduction.
It achieves convenient impurity filtration and efficient noise reduction, and improves the noise reduction efficiency of the muffler by dispersing noise through multi-stage channels.
Smart Images

Figure CN223767658U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of intake silencer technology, and in particular to an intake silencer with multi-channel airflow distribution. Background Technology
[0002] An intake silencer is a device used inside a refrigeration compressor. Its main function is to reduce the noise generated by the compressor during operation and protect the compressor from noise. Intake silencers are typically installed at the intake end of the compressor and use a specific structural design to reduce noise propagation and radiation. They effectively reduce the noise during compressor operation and minimize potential damage to the compressor and other equipment. However, existing intake silencers have certain drawbacks. When airflow is discharged, impurities are present inside, which easily remain and are difficult to clean. When airflow enters the silencer, sound waves accompany it into the chamber. These sound waves collide with baffles, reducing their energy and converting it into vibrations within the silencer. Furthermore, the sound waves collide and reflect within the chamber, creating opposing sound waves that meet and cancel each other out, thus eliminating noise. However, the single-channel design results in high airflow pressure and velocity, leading to low silencing efficiency. Therefore, we propose a multi-channel airflow distribution intake silencer. Utility Model Content
[0003] The main objective of this invention is to provide an intake silencer with multi-channel airflow distribution, which can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A multi-channel airflow distribution intake muffler includes a muffler body, an air inlet is embedded on one side surface of the muffler body, an exhaust port is embedded on the upper surface of the muffler body, and a channel body is embedded inside the muffler body.
[0006] In a preferred embodiment, the muffler body includes a first cavity, a shell, a first partition, a second cavity, a second partition, a third partition, a third cavity, a fourth cavity, and through holes. The first partition, the second partition, and the third partition are embedded inside the shell. Through holes are formed on one side surface of the second partition and the third partition. There are two sets of through holes. The first cavity is formed inside the shell on one side of the first partition, and the fourth cavity is formed inside the shell on one side of the third partition. A second cavity is formed between the first partition and the second partition, and a third cavity is formed between the second partition and the third partition.
[0007] In a preferred embodiment, the air inlet includes a limiting plate, filter cotton, a sleeve, a limiting ring, and an air inlet pipe. The sleeve is fitted onto the surface of the air inlet pipe, and a limiting ring is embedded on the inner surface of the sleeve on one side of the air inlet pipe. Filter cotton is embedded inside the limiting ring, and a limiting plate is fixedly installed on one side of the filter cotton.
[0008] In a preferred embodiment, the intake pipe is embedded in one side surface of the housing at the middle position, and the exhaust port is embedded in the upper surface of the housing at one side position.
[0009] In a preferred embodiment, the channel body includes a first channel, a second channel, a third channel, a fourth channel, and a conveying channel.
[0010] In a preferred embodiment, the first channel, the second channel, the third channel, and the fourth channel are all embedded between the first partition and the second partition, and are located inside the second cavity and the third cavity. The conveying channel is embedded between the second partition and the third partition and is located in the middle position.
[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:
[0012] In this invention, the filter cotton can filter the gas entering the intake pipe, and the limiting plate and limiting ring can quickly replace the filter cotton, making operation convenient. Through the main channel, the gas can undergo noise reduction treatment through multiple channels, resulting in good treatment effect. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of an intake silencer with multi-channel airflow distribution according to the present invention.
[0014] Figure 2 This is a cross-sectional view of the filter cotton in a multi-channel airflow distribution intake silencer according to the present invention.
[0015] Figure 3 This is a schematic diagram of the internal structure of the intake muffler with multi-channel airflow distribution according to the present invention.
[0016] Figure 4 This is a detailed view of the main channel of an intake muffler with multi-channel airflow distribution according to the present invention;
[0017] Figure 5 This is a cross-sectional view of the outer shell of an intake muffler with multi-channel airflow distribution according to the present invention;
[0018] Figure 6 This utility model relates to an intake muffler with multi-channel airflow distribution. Figure 2A magnified view of the details at point A.
[0019] In the diagram: 1. Silencer body; 101. First cavity; 102. Outer shell; 103. First partition; 104. Second cavity; 105. Second partition; 106. Third partition; 107. Third cavity; 108. Fourth cavity; 109. Through hole; 2. Air inlet; 201. Limiting plate; 202. Filter cotton; 203. Sleeve; 204. Limiting ring; 205. Air inlet pipe; 3. Exhaust port; 4. Channel body; 401. First channel; 402. Second channel; 403. Third channel; 404. Fourth channel; 405. Conveying channel. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0021] Reference Figure 1-6 A multi-channel airflow distribution intake muffler includes a muffler body 1, an air inlet 2 is embedded on one side surface of the muffler body 1, an exhaust port 3 is embedded on the upper surface of the muffler body 1, and a channel body 4 is embedded inside the muffler body 1.
[0022] The muffler body 1 includes a first cavity 101, a shell 102, a first partition 103, a second cavity 104, a second partition 105, a third partition 106, a third cavity 107, a fourth cavity 108, and a through hole 109. The first partition 103, the second partition 105, and the third partition 106 are embedded inside the shell 102. Two sets of through holes 109 are formed on one side surface of the second partition 105 and the third partition 106. The first cavity 101 is formed on one side of the first partition 103 inside the shell 102, and the third cavity 107 is formed on one side of the third partition 106 inside the shell 102. A fourth cavity 108 is formed, a second cavity 104 is formed between the first partition 103 and the second partition 105, and a third cavity 107 is formed between the second partition 105 and the third partition 106; the air inlet 2 includes a limiting plate 201, a filter cotton 202, a sleeve 203, a limiting ring 204, and an air inlet pipe 205. The sleeve 203 is fitted onto the surface of the air inlet pipe 205. Both the inner surface of the sleeve 203 and the outer surface of the air inlet pipe 205 are threaded, so that the sleeve 203 and the air inlet pipe 205 are connected by threads. The limiting ring 204 is embedded on the inner surface of the sleeve 203 on one side of the air inlet pipe 205. A filter cotton 202 is embedded inside the limiting ring 204. A limiting plate 201 is fixedly installed on one side surface of the filter cotton 202. The limiting plate 201 is made of breathable material and its main function is to limit the filter cotton 202. The air inlet pipe 205 is embedded in the middle of one side surface of the outer shell 102, and the exhaust port 3 is embedded in the upper surface of the outer shell 102 on one side. The channel body 4 includes a first channel 401, a second channel 402, a third channel 403, a fourth channel 404, and a conveying channel 405. All four channels 401, 402, 403, and 404 are embedded between the first partition 103 and the second partition 105, and are located inside the second cavity 104 and the third cavity 107. The conveying channel 405 is embedded between the second partition 105 and the third partition 106 in the middle position. The first channel 401, the second channel 402, the third channel 403, and the fourth channel 404 are all U-shaped tubes, with one end longer than the other. One end is embedded in the first partition 103, and the other end is embedded in the second partition 105. Small holes are provided on the surface of the first channel 401, the second channel 402, the third channel 403, and the fourth channel 404.
[0023] The implementation principle of the multi-channel airflow distribution intake muffler embodiment of this application is as follows: When in use, gas enters the interior of the muffler body 1 through the air inlet 2, and after being silenced by the muffler body 1 and the channel body 4, it is discharged through the exhaust port 3.
[0024] The gas passes through the sleeve 203 and the filter cotton 202, and then through the air inlet pipe 205 to the interior of the outer shell 102. After entering the first cavity 101, the space increases and the gas flow rate slows down, thus performing initial noise reduction. The gas passes through the first channel 401, the second channel 402, the third channel 403, and the fourth channel 404 to the interior of the third cavity 107, and mixes in the second cavity 104. It is dispersed and silenced through multiple channels, and finally reaches the interior of the fourth cavity 108 through the conveying channel 405 and is discharged from the exhaust port 3. When the filter cotton 202 needs to be replaced, the sleeve 203 is rotated and moved to one side, so that the limiting ring 204 pushes out the limiting plate 201, thus bringing the filter cotton 202 out.
[0025] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A multi-pass airflow distributing air intake silencer, characterized by: Including the muffler body (1), the side surface of the muffler body (1) is installed with the air inlet (2), the upper surface of the muffler body (1) is installed with the exhaust port (3), the inside of the muffler body (1) is installed with the channel body (4).
2. A multi-pass airflow distributing air intake silencer according to claim 1, characterized in that: The muffler body (1) includes a first cavity (101), a shell (102), a first partition (103), a second cavity (104), a second partition (105), a third partition (106), a third cavity (107), a fourth cavity (108), a through hole (109), the inside of the shell (102) is installed with the first partition (103), the second partition (105) and the third partition (106), the side surface of the second partition (105) and the third partition (106) is provided with the through hole (109), the through hole (109) is two groups, the inside of the shell (102) is formed with the first cavity (101) on one side of the first partition (103), the inside of the shell (102) is formed with the fourth cavity (108) on one side of the third partition (106), the second cavity (104) is formed between the first partition (103) and the second partition (105), and the third cavity (107) is formed between the second partition (105) and the third partition (106).
3. A multi-pass airflow distributing air intake silencer according to claim 2, characterized in that: The air inlet (2) includes a limiting plate (201), filter cotton (202), a sleeve (203), a limiting ring (204), and an air inlet pipe (205), the surface of the air inlet pipe (205) is installed with the sleeve (203), the inner surface of the sleeve (203) is installed with the limiting ring (204) on one side of the air inlet pipe (205), the inside of the limiting ring (204) is installed with the filter cotton (202), and one side surface of the filter cotton (202) is fixedly installed with the limiting plate (201).
4. A multi-pass airflow distributing air silencer according to claim 3, wherein: The air inlet pipe (205) is installed on one side surface of the shell (102) at the middle position, and the exhaust port (3) is installed on the upper surface of the shell (102) at one side position.
5. A multi-pass airflow distributing air silencer according to claim 4, wherein: The channel body (4) includes a first channel (401), a second channel (402), a third channel (403), a fourth channel (404) and a conveying channel (405).
6. A multi-pass airflow distributing air silencer according to claim 5, wherein: The first channel (401), the second channel (402), the third channel (403) and the fourth channel (404) are installed between the first partition (103) and the second partition (105) and in the second cavity (104) and the third cavity (107), and the conveying channel (405) is installed between the second partition (105) and the third partition (106) at the middle position.