Silent nitrogen removal silencer for medical PSA oxygen generator

By designing a multi-layer structure of medical PSA oxygen generator silent nitrogen silencer, the combination of shell, fixing frame, ventilation mesh, threaded tube, and silence cotton in the prior art has solved the problem of poor noise reduction effect caused by single sound silencer in the prior art, achieving more efficient noise cancellation and longer service life.

CN222600513UActive Publication Date: 2025-03-11ZHENGZHOU TONGDA OXYGEN APPL DEV CO LTD
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Patent Information

Application Number
CN202421215360.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-30
Publication Date
2025-03-11
Estimated Expiration
2034-05-30

AI Technical Summary

Technical Problem

The existing silent nitrogen discharge silencer has relatively single silence methods, resulting in poor noise reduction effect and affecting the practicality of the silencer.

Method used

A silent nitrogen silencer for medical PSA oxygen generator is designed, and adopts a multi-layer structure including a housing, a fixing frame, a ventilation mesh, a threaded tube, a silencer cotton, an intake pipe and a connecting pipe. The combination of these components can achieve rapid and efficient noise cancellation.

Benefits of technology

It realizes more efficient noise cancellation, improves the service life of the silencer, and solves the problem of poor noise reduction results caused by the single silencer method in the prior art.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of oxygen generator spare and accessory parts, and discloses a medical PSA oxygen generator mute type nitrogen removal silencer which comprises a shell, a fixing frame is fixedly connected to the inner wall of the shell, a ventilation net is fixedly connected to the inner wall of the fixing frame, a threaded pipe is arranged on the outer wall of the ventilation net in a sleeved mode, a plurality of ventilation nets are arranged in the threaded pipe, and the ventilation nets are arranged in the threaded pipe. The inner wall of the shell is provided with silencing cotton, the inner wall of the shell is slidably connected with an air inlet pipe, the interior of the air inlet pipe is fixedly connected with connecting pipes which are in bilateral symmetry, the two connecting pipes cover the outer wall of the threaded pipe, the outer wall of the air inlet pipe is fixedly connected with a top cover, and the outer wall of the top cover is provided with a clamping assembly. According to the silencer, through cooperation of the shell, the fixing frame, the ventilation net, the threaded pipe, the ventilation net, the silencing cotton, the air inlet pipe, the connecting pipe, the top cover and the clamping assembly, the rapid and efficient silencing effect is achieved, and the silencing efficiency is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of oxygen concentrator parts and components, in particular to a silent nitrogen exhaust silencer for a medical PSA oxygen concentrator. Background Art

[0002] Medical PSA oxygen concentrator is a device that uses PSA technology to produce high-purity medical oxygen. The silent nitrogen exhaust silencer is used to reduce the noise generated by the emission of nitrogen. PSA oxygen concentrators will produce nitrogen byproduct emissions when working, and these emissions will generate noise. In order to reduce environmental noise pollution and improve patient comfort, silent nitrogen exhaust silencers are used to reduce these noises, ensure a quiet medical environment, and enhance the treatment experience.

[0003] In most cases, existing silent nitrogen exhaust silencers use a single silent surface placed inside the pipe and then connected to the exhaust pipe for silencing. However, a single silencer cotton cannot reduce the noise to a minimum, which greatly reduces the practicality of the silencer. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a silent nitrogen exhaust silencer for a medical PSA oxygen generator, aiming to improve the problem that the silencer structure used in the prior art is relatively simple, resulting in a significant reduction in the silencer effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a silent nitrogen exhaust silencer for a medical PSA oxygen concentrator, comprising a shell, a fixing frame is fixedly connected to the inner wall of the shell, a ventilation net is fixedly connected to the inner wall of the fixing frame, a threaded tube is sleeved on the outer wall of the ventilation net, a plurality of air-permeable nets are provided inside the threaded tube, sound-absorbing cotton is provided on the inner wall of the shell, an air intake pipe is slidably connected to the inner wall of the shell, a left-right symmetrical connecting pipe is fixedly connected to the inside of the air intake pipe, two connecting pipe covers are provided on the outer wall of the threaded tube, a top cover is fixedly connected to the outer wall of the air intake pipe, and a snap-fit ​​assembly is provided on the outer wall of the top cover.

[0006] Furthermore, the snap-fit ​​assembly includes a plurality of snaps, one side of the outer walls of the plurality of snaps are fixedly connected to one side of the outer wall of the top cover, the outer wall of the snaps is snap-fitted with a block, and one side of the outer wall of the block is fixedly connected to the outer wall of the shell.

[0007] Furthermore, the outer wall of the shell is fixedly connected with an external thread, and the external threaded outer wall is threadedly connected with a mounting cover.

[0008] Furthermore, a spring 1 is fixedly connected to one side of the outer wall of the mounting cover, a resistance block is fixedly connected to one end of the spring 1, and the resistance block is slidably connected to the inner wall of the ventilation net.

[0009] Furthermore, the outer wall of the air intake pipe is fixedly connected to a left-right symmetrical hinge seat, and the interior of the hinge seat is fixedly connected to a fixing rod.

[0010] Furthermore, the outer wall of the fixing rod 1 is rotatably connected to a connecting rod, one side of the outer wall of the connecting rod is fixedly connected to a fixing plate, one side of the outer wall of the fixing plate is fixedly connected to a spring 2, and one end of the spring 2 is fixedly connected to one side of the outer wall of the intake pipe.

[0011] Furthermore, a second hinge seat is fixedly connected to one side of the outer wall of the connecting rod, a second fixing rod is fixedly connected inside the second hinge seat, and a hinge block is rotatably connected to the outer wall of the second fixing rod.

[0012] Furthermore, a clamping block is fixedly connected to one side of the outer wall of the hinge block, and an anti-sliding block is fixedly connected to the inner wall of the clamping block.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, through the cooperation of the shell, the fixing frame, the ventilation net, the threaded pipe, the ventilation net, the silencer cotton, the air intake pipe, the connecting pipe, the top cover and the clamping assembly, the effect of rapid and efficient silencer is achieved, the efficiency of silencer is improved, and the problem of the relatively single silencer means in the prior art is solved.

[0015] 2. In the utility model, through the cooperation of the external thread, the mounting cover, the spring 1, the abutment block, the hinge seat 1, the fixing rod 1, the connecting rod, the fixing plate, the spring 2, the hinge seat 2, the fixing rod 2, the hinge block, the clamping block and the anti-sliding block, the effect of facilitating the replacement of the silencer cotton and prolonging the service life of the silencer is achieved, the service life of the silencer is improved, and the problem of the inconvenience of replacing the silencer cotton in the prior art leading to a reduction in the service life of the silencer is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a silent nitrogen exhaust silencer for a medical PSA oxygen generator proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the disassembly of a silent nitrogen exhaust silencer for a medical PSA oxygen concentrator proposed by the utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of a silent nitrogen exhaust silencer for a medical PSA oxygen concentrator proposed by the utility model;

[0019] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0020] Legend:

[0021] 1. Shell; 2. Fixed frame; 3. Ventilation net; 4. Threaded pipe; 5. Ventilation net; 6. Silencing cotton; 7. Inlet pipe; 8. Connecting pipe; 9. Top cover; 10. Snap assembly; 1001. Buckle; 1002. Block; 11. External thread; 12. Mounting cover; 13. Spring 1; 14. Resistance block; 15. Articulated seat 1; 16. Fixed rod 1; 17. Connecting rod; 18. Fixed plate; 19. Spring 2; 20. Articulated seat 2; 21. Fixed rod 2; 22. Articulated block; 23. Clamping block; 24. Anti-sliding block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1 , Figure 2 and Figure 3 , the utility model provides an embodiment: a silent nitrogen exhaust silencer for a medical PSA oxygen concentrator, comprising a shell 1, a fixing frame 2 is fixedly connected to the inner wall of the shell 1, a ventilation net 3 is fixedly connected to the inner wall of the fixing frame 2, a threaded tube 4 is sleeved on the outer wall of the ventilation net 3, a plurality of air-permeable nets 5 are provided inside the threaded tube 4, a silencer cotton 6 is provided on the inner wall of the shell 1, an air intake pipe 7 is slidably connected to the inner wall of the shell 1, a left-right symmetrical connecting pipe 8 is fixedly connected inside the air intake pipe 7, two connecting pipes 8 are covered on the outer wall of the threaded tube 4, a top cover 9 is fixedly connected to the outer wall of the air intake pipe 7, a clamping assembly 10 is provided on the outer wall of the top cover 9; the clamping assembly 10 comprises a plurality of buckles 1001, one side of the outer wall of the plurality of buckles 1001 are fixedly connected to one side of the outer wall of the top cover 9, a clamping block 1002 is clamped and connected to the outer wall of the buckle 1001, and one side of the outer wall of the clamping block 1002 is fixedly connected to the outer wall of the shell 1;

[0024] Specifically, the core of this silencing structure lies in the silencing cotton 6 filled inside the shell 1. As a highly efficient sound-absorbing material, the silencing cotton has excellent sound absorption performance and can effectively absorb and reduce the noise in transmission. By cleverly inserting the silencing cotton 6 into the shell 1, not only the space is fully utilized, but also the silencing effect is made more uniform and efficient. In order to achieve the fixation and positioning of the silencing cotton 6, the designer adopts the snap-on method of the buckle 1001 and the block 1002. This connection method is not only firm and reliable, but also simple to operate, and convenient for subsequent maintenance and replacement. In the propagation path of the noise, the air intake pipe 7 and the connecting pipe 8 play a key role. They are responsible for guiding the noise into the inside of the threaded pipe 4, and then evenly distributing the noise into the silencing cotton 6 through the breathable net 5. The setting of the breathable net 5 not only ensures the smooth transmission of the noise, but also prevents impurities such as dust from entering the inside of the silencing cotton 6, thereby extending the service life of the silencing structure. The design of the threaded pipe 4 is even more ingenious. Through the threaded connection, not only can the length and angle of the connecting pipe 8 be easily adjusted, but also a close connection with other components can be achieved to prevent noise leakage. At the same time, the inner wall of the threaded tube 4 is smooth and not easy to accumulate dust, ensuring the smoothness of noise transmission. After this series of designs and optimizations, the silencer structure achieves efficient noise processing. When the noise enters the interior of the silencer cotton 6 through the air intake pipe 7, the connecting pipe 8 and the threaded tube 4, the silencer cotton 6 can effectively absorb and reduce the intensity of the noise to an acceptable range for people. At the same time, the discharge of the ventilation net 3 further reduces the impact of noise on the surrounding environment. Finally, the setting of the mounting cover 12 not only plays a role in protecting the internal structure, but also helps to discharge the air inside the shell 1 through its unique ventilation design, thereby ensuring the normal operation and long life of the silencer structure. This design not only reflects the attention to detail, but also shows the designer's emphasis on user experience.

[0025] Reference Figure 1 , Figure 2 and Figure 4 The outer wall of the shell 1 is fixedly connected with an external thread 11, and the outer wall of the external thread 11 is threadedly connected with a mounting cover 12; a spring 13 is fixedly connected to one side of the outer wall of the mounting cover 12, and a resistance block 14 is fixedly connected to one end of the spring 13, and the resistance block 14 is slidably connected to the inner wall of the ventilation net 3; a left-right symmetrical hinge seat 15 is fixedly connected to the outer wall of the intake pipe 7, and a fixing rod 16 is fixedly connected inside the hinge seat 15; the outer wall of the fixing rod 16 is rotatably connected with a connecting rod 17, and the connecting rod A fixing plate 18 is fixedly connected to one side of the outer wall of the fixing plate 18, and a spring 2 19 is fixedly connected to one side of the outer wall of the intake pipe 7. One end of the spring 2 19 is fixedly connected to one side of the outer wall of the intake pipe 7. A hinge seat 20 is fixedly connected to one side of the outer wall of the connecting rod 17, and a fixing rod 21 is fixedly connected inside the hinge seat 20. The outer wall of the fixing rod 21 is rotatably connected to a hinge block 22. A clamping block 23 is fixedly connected to one side of the outer wall of the hinge block 22, and an anti-sliding block 24 is fixedly connected to the inner wall of the clamping block 23.

[0026] Specifically, first, when the fixing plate 18 is pressed, it squeezes the spring 2 19, which is a precisely designed spring with sufficient elasticity and restoring force. As the spring 2 19 is squeezed, the connecting rod 17 starts to move. The connecting rod 17 is a key part in the mechanical structure, which is connected to the fixing plate 18 through the hinge seat 20 on the outer wall. When the fixing plate 18 moves, the hinge seat 20 will also move accordingly, thereby driving the connecting rod 17 to move accordingly. The movement of the connecting rod 17 further causes the rotation of the clamping block 23. The design of the clamping block 23 is very clever. One end of it is connected to the connecting rod 17 through the hinge seat, and the other end is designed with an anti-sliding block 24. When the clamping block 23 rotates, the anti-sliding block 24 will fit tightly on the outer wall of the exhaust pipe of the oxygen concentrator, thereby achieving a stable clamping effect. In addition, in order to enhance the silencing effect of the equipment, engineers also placed a silencing cotton block inside the shell 1. The silencing cotton block can effectively absorb and reduce the noise generated during the operation of the machine and improve the overall performance of the equipment. In order to ensure that the silencer cotton block is firmly placed inside the housing 1, a resisting block 14 and a spring 13 are also designed in the structure. When the silencer cotton block is placed in the housing 1, the resisting block 14 will tightly resist the silencer cotton block and fix it through the elastic force of the spring 13. This design not only ensures the stability of the silencer cotton block, but also makes the installation and removal process very simple and convenient. Finally, by tightening the installation cover 12, the entire structure is firmly fixed together, thereby realizing the rapid installation and removal of the silencer cotton block.

[0027] Working principle: when the silencer needs to be used, first press the fixing plate 18, and the fixing plate 18 presses the spring 2 19 to squeeze, and then the fixing plate 18 drives the hinge seat 2 20 on the outer wall of the connecting rod 17 to move, and then the hinge seat 20 moves, so as to drive the clamping block 23 to rotate, and then the anti-sliding block 24 is contacted with the outer wall of the exhaust pipe of the oxygen concentrator to achieve the effect of quick installation and disassembly, and then the silencer cotton block is placed in the shell 1, and then the resistance block 14 is pressed against the silencer cotton block by the spring 13 to fix it, and then the installation cover 12 is tightened, so as to achieve the effect of fixing the silencer cotton block;

[0028] Secondly, when the oxygen generator is performing nitrogen exhaust operation, the sound-absorbing cotton 6 is inserted into the shell 1, and then the buckle 1001 and the block 1002 are engaged to achieve a fixing effect, and the noise is transmitted to the inside of the connecting pipe 8 through the air intake pipe 7, and then transmitted to the inside of the threaded tube 4 through the connecting pipe 8. At this time, the noise is discharged into the inside of the sound-absorbing cotton 6 through the breathable net 5 to achieve the effect of noise reduction. Through the setting of the threaded tube 4, the noise is evenly distributed to the inside of the sound-absorbing cotton 6 for efficient noise reduction. At this time, it is discharged through the ventilation net 3 and then enters the sound-absorbing cotton block, thereby achieving a further efficient noise reduction effect, and the air is discharged from the inside of the shell 1 through the installation cover 12.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A silent nitrogen exhaust silencer for a medical PSA oxygen generator, comprising a housing (1), characterized in that: The inner wall of the shell (1) is fixedly connected to a fixing frame (2), the inner wall of the fixing frame (2) is fixedly connected to a ventilation net (3), the outer wall of the ventilation net (3) is sleeved with a threaded tube (4), a plurality of ventilation nets (5) are provided inside the threaded tube (4), the inner wall of the shell (1) is provided with a sound-absorbing cotton (6), the inner wall of the shell (1) is slidably connected to an air intake pipe (7), the air intake pipe (7) is fixedly connected to left-right symmetrical connecting pipes (8), the two connecting pipes (8) are covered on the outer wall of the threaded tube (4), the outer wall of the air intake pipe (7) is fixedly connected to a top cover (9), and the outer wall of the top cover (9) is provided with a snap-fit ​​assembly (10).

2. A medical PSA oxygen generator silent nitrogen exhaust muffler according to claim 1, characterized in that: The snap-fit ​​assembly (10) comprises a plurality of snaps (1001), one side of the outer walls of the plurality of snaps (1001) being fixedly connected to one side of the outer wall of the top cover (9), the outer wall of the snaps (1001) being snap-fitted with a clamping block (1002), and one side of the outer wall of the clamping block (1002) being fixedly connected to the outer wall of the shell (1).

3. A silent nitrogen exhaust muffler for a medical PSA oxygen generator according to claim 2, characterized in that: An external thread (11) is fixedly connected to the outer wall of the shell (1), and a mounting cover (12) is threadedly connected to the outer wall of the external thread (11).

4. A medical PSA oxygen generator silent nitrogen exhaust silencer according to claim 3, characterized in that: A spring (13) is fixedly connected to one side of the outer wall of the mounting cover (12), and a resistance block (14) is fixedly connected to one end of the spring (13), and the resistance block (14) is slidably connected to the inner wall of the ventilation net (3).

5. A silent nitrogen exhaust muffler for a medical PSA oxygen generator according to claim 4, characterized in that: The outer wall of the air inlet pipe (7) is fixedly connected to a left-right symmetrical hinge seat (15), and the interior of the hinge seat (15) is fixedly connected to a fixing rod (16).

6. A silent nitrogen exhaust muffler for a medical PSA oxygen generator according to claim 5, characterized in that: The outer wall of the fixing rod 1 (16) is rotatably connected to a connecting rod (17), one side of the outer wall of the connecting rod (17) is fixedly connected to a fixing plate (18), one side of the outer wall of the fixing plate (18) is fixedly connected to a spring 2 (19), and one end of the spring 2 (19) is fixedly connected to one side of the outer wall of the intake pipe (7).

7. A silent nitrogen exhaust silencer for a medical PSA oxygen generator according to claim 6, characterized in that: A second hinge seat (20) is fixedly connected to one side of the outer wall of the connecting rod (17), a second fixing rod (21) is fixedly connected inside the second hinge seat (20), and a hinge block (22) is rotatably connected to the outer wall of the second fixing rod (21).

8. A silent nitrogen exhaust muffler for a medical PSA oxygen generator according to claim 7, characterized in that: A clamping block (23) is fixedly connected to one side of the outer wall of the hinge block (22), and an anti-sliding block (24) is fixedly connected to the inner wall of the clamping block (23).