Exhaust silencer and oxygen generator

Abstract

The utility model relates to an exhaust silencer, which comprises a silencer main body, an exhaust pipe, an exhaust pipe and an exhaust pipe, wherein the silencer main body is provided with an exhaust port; the first silencing component is arranged in the silencer body, the first silencing component is of a hollow structure, an air inlet is formed in one end of the first silencing component, and a plurality of silencing holes are formed in the wall of the first silencing component. In addition, the utility model further relates to an oxygen generator comprising the exhaust silencer. The exhaust silencer provided by the utility model adopts a multi-layer impedance composite structure design, has the advantages of simple structure, remarkable noise reduction effect and the like, can effectively reduce noise generated during nitrogen emission of an oxygenerator and the like, meets the noise reduction requirements of different occasions, and has wide application prospects.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction technology for oxygen generators, specifically to a silencer device for reducing the noise of nitrogen emissions, and more specifically, to an exhaust silencer and an oxygen generator including the exhaust silencer. Background Technology

[0002] Existing oxygen concentrators face a significant problem during operation: the high-speed flow and impact of nitrogen gas generate substantial noise pollution. This continuous, high-intensity noise not only greatly affects the comfort of the working environment and interferes with people's normal work and communication, but may also cause potential harm to the health of workers who are exposed to this environment for a long time.

[0003] To address this issue, various silencer devices have emerged on the market, attempting to reduce the noise generated by oxygen concentrators during operation through physical or acoustic principles. However, while these existing silencer devices can mitigate the impact of noise to some extent, their noise reduction effect is often not ideal, failing to completely eliminate or significantly reduce noise to a safe and comfortable level.

[0004] In addition, these silencer devices present other problems. For example, their structures are often quite complex, which not only increases the overall cost and weight of the equipment but may also adversely affect the operating efficiency and stability of the oxygen concentrator. Furthermore, the complex structure also means higher maintenance difficulty and cost, as internal components may fail due to wear, blockage, or other reasons during use, requiring regular cleaning, inspection, and replacement.

[0005] Therefore, while existing oxygen concentrator noise reduction technologies can alleviate noise problems to some extent, there is still much room for improvement. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an exhaust muffler with the advantages of simple structure and significant noise reduction effect.

[0007] To solve the above-mentioned technical problems or achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0008] According to one aspect of the present invention, an exhaust muffler is provided, comprising:

[0009] The muffler body has an exhaust port.

[0010] The first silencing component is disposed inside the muffler body. The first silencing component has a hollow structure, an air inlet is provided at one end of the first silencing component, and multiple silencing holes are provided on the wall of the first silencing component.

[0011] In one embodiment of this utility model, the exhaust muffler further includes:

[0012] A filling component that fills the space between the muffler body and the first muffler component.

[0013] In one embodiment of this utility model, the filling component includes:

[0014] A second noise-reducing component, which is fitted onto the first noise-reducing component; and

[0015] The third silencing component is inserted into the first and second silencing components.

[0016] In one embodiment of the present invention, the first noise-absorbing component includes a cylindrical noise-absorbing tube, the second noise-absorbing component includes a multi-layered annular porous felt, and the third noise-absorbing component includes a sound-insulating ring.

[0017] In one embodiment of this utility model, the third silencing component is integrally injection molded with the muffler body.

[0018] In one embodiment of this utility model, the muffler body includes a cylindrical muffler body.

[0019] In one embodiment of this utility model, the muffler hole is a circular hole, and the exhaust port includes multiple square holes with an array-like structure.

[0020] In one embodiment of this utility model, the muffler holes are evenly arranged on the wall of the first muffler component away from the air inlet. When the muffler holes are inside the muffler body, they are adjacent to the closed end of the muffler body. The exhaust port is arranged on the side wall of the muffler body and adjacent to the open end of the muffler body so that the muffler holes and the exhaust port are staggered.

[0021] In one embodiment of this utility model, the exhaust muffler further includes:

[0022] The cover plate, the middle of which is connected to the air inlet, carries the first muffler component and is inserted into the muffler body from the open end of the muffler body. The cover plate closes the open end and is detachably connected to the muffler body.

[0023] In one embodiment of this utility model, the cover plate has multiple exhaust holes that connect to the internal space of the muffler body.

[0024] In one embodiment of this utility model, the exhaust muffler further includes:

[0025] A fixing part is provided on the outside of the muffler body for mounting and fixing the muffler body.

[0026] According to another aspect of the present invention, an oxygen generator is provided, which includes the exhaust silencer as described above.

[0027] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0028] The exhaust silencer provided by this utility model has a simple structure, is easy to manufacture and install; has a significant noise reduction effect, can meet the noise reduction needs of different occasions; is easy to maintain, has a long service life; and is applicable to a variety of nitrogen emission equipment, with broad application prospects. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0030] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0031] Figure 1 A three-dimensional structural schematic diagram of an exhaust muffler provided in one embodiment of the present invention is shown;

[0032] Figure 2 It shows Figure 1 A schematic diagram of the exploded structure of an exhaust muffler;

[0033] Figure 3 It shows Figure 1 A cross-sectional view of the muffler body near the opening end of the exhaust muffler.

[0034] In the diagram: 1. Muffler body; 2. Cover plate; 3. Muffler pipe; 4. Felt; 5. Sound insulation ring; 6. Exhaust port; 7. Fixing part; 8. Open end; 9. Closed end; 10. Air inlet; 11. Exhaust hole; 12. Muffler hole. Detailed Implementation

[0035] To better understand the above-described objectives, features, and advantages of this disclosure, embodiments of this disclosure will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0036] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways than those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0037] like Figure 1-3 As shown, this utility model provides an exhaust muffler, comprising:

[0038] The muffler body 1 has an exhaust port 6 on it;

[0039] The first silencing component (e.g., silencing pipe 3) is disposed inside the muffler body 1. The first silencing component has a hollow structure, an air inlet 10 is provided at one end of the first silencing component, and a plurality of silencing holes 12 are provided on the wall of the first silencing component.

[0040] The exhaust silencer provided by this utility model has a simple structure, is easy to manufacture and install; has a significant noise reduction effect, can meet the noise reduction needs of different occasions; is easy to maintain, has a long service life; and is applicable to a variety of nitrogen emission equipment, with broad application prospects.

[0041] In the aforementioned exhaust muffler, the exhaust muffler further includes a filling component, which fills the space between the muffler body 1 and the first muffler component. Further providing a filling component between the muffler body 1 and the first muffler component allows for further noise reduction of the exhaust.

[0042] In the aforementioned exhaust muffler, the filling component includes:

[0043] A second noise-reducing component (e.g., felt 4) is fitted over the first noise-reducing component; and

[0044] The third silencing component (e.g., soundproof ring 5) is inserted into the first and second silencing components.

[0045] In the above-mentioned exhaust muffler, preferably, the first muffler component includes a cylindrical muffler pipe 3, the second muffler component includes a multi-layered annular porous felt 4, and the third muffler component includes a sound insulation ring 5.

[0046] In the above-mentioned exhaust muffler, the third muffler component is integrally injection molded with the muffler body 1.

[0047] In the above-mentioned exhaust muffler, preferably, the muffler body 1 includes a cylindrical muffler body.

[0048] In the above-mentioned exhaust muffler, preferably, the muffler hole 12 is a circular hole, and the exhaust port 6 includes a plurality of square holes with an array structure design.

[0049] In the above-mentioned exhaust muffler, preferably, the muffler holes 12 are evenly arranged on the wall of the first muffler component away from the air inlet 10. When the muffler holes 12 are inside the muffler body 1, they are adjacent to the closed end 9 of the muffler body 1. The exhaust port 6 is arranged on the side wall of the muffler body 1 and adjacent to the open end 8 of the muffler body 1 so that the muffler holes 12 and the exhaust port 6 are staggered.

[0050] The exhaust muffler described above also includes:

[0051] The cover plate 2 is connected to the air inlet 10 in the middle. The cover plate 2 carries the first muffler component and is inserted into the muffler body 1 from the opening end 8. The cover plate 2 closes the opening end 8 and is detachably connected to the muffler body 1.

[0052] In the above-mentioned exhaust muffler, the cover plate 2 has multiple exhaust holes 11 that connect to the internal space of the muffler body.

[0053] The exhaust muffler described above also includes:

[0054] The fixing part 7 is provided on the outside of the muffler body 1 for mounting and fixing the muffler body 1.

[0055] In addition, this utility model also provides an oxygen generator, which includes the exhaust silencer as described above.

[0056] The technical solution of this utility model will be described in detail below through specific embodiments.

[0057] like Figure 1-3 As shown, one embodiment of this utility model provides an exhaust muffler, the structure of which mainly includes: a muffler body 1; a cover plate 2; an exhaust port 6 on the muffler body 1; a muffler pipe 3, a felt 4 and a sound insulation ring 5 located inside the muffler body 1; and a fixing part 7.

[0058] Refer again Figure 1-3The muffler body 1 has an open end 8 and a closed end 9. An exhaust port 6 is provided on the side wall of the muffler body 1 near the open end 8. An air inlet 10 is provided at one end of the muffler pipe 3. This air inlet 10 is connected to the middle of the cover plate 2 and to, for example, the nitrogen exhaust pipe of an oxygen generator. Multiple evenly distributed silencing holes 12 are provided on the wall of the muffler pipe 3. The felt 4 is a multi-layered annular porous felt that is fitted onto the muffler pipe 3. Multiple layers of felt 4 can be stacked as needed to improve noise reduction. A sound-insulating ring 5 is placed inside the muffler body 1, forming a sound-insulating chamber. Its length is approximately the distance from the closed end 9 of the muffler body 1 to the exhaust port 6. During the assembly of the exhaust muffler, the cover plate 2, carrying the muffler pipe 3 and the felt 4 fitted thereon, is inserted from the open end 8 of the muffler body 1 into the sound-insulating ring 5 inside the muffler body 1. The cover plate 2 closes the open end 8 and is detachably connected to the muffler body 1, thereby forming a complete exhaust muffler structure. The fixing part 7 is provided on the outside of the muffler body 1 for mounting and fixing the muffler body 1. For example, the fixing part 7 can fix the entire exhaust muffler to the casing of the oxygen generator, preferably on the casing near the nitrogen exhaust pipe of the oxygen generator.

[0059] In the above embodiments of this utility model, such as Figure 3 As shown, the sound insulation ring 5 is inside the silencer body 1, and the silencer tube 3 and felt 4 are inserted into the sound insulation ring 5, so that the sound insulation ring 5 can further eliminate noise whose sound pressure and frequency have not been completely reduced by the silencer tube 3 and felt 4.

[0060] In the above embodiments of this utility model, such as Figure 1-3 As shown, preferably, the sound insulation ring 5 and the muffler body 1 are integrally injection molded from ABS material. Therefore, when assembling the exhaust muffler, it is not necessary to install the sound insulation ring 5 separately; simply inserting the muffler pipe 3 and the felt 4 into the sound insulation ring 5 is sufficient to reduce and eliminate noise through multiple muffler components.

[0061] In the above embodiments of this utility model, such as Figure 1 As shown, preferably, the cover plate 2 has multiple exhaust holes 11 that communicate with the internal space of the muffler body 1. In this embodiment, the multiple exhaust holes 11 adopt an array structure design, and the exhaust holes 11 and the exhaust port 6 together discharge the noise-reduced gas (e.g., nitrogen), further reducing the sound pressure of the noise.

[0062] In the above embodiments of this utility model, such as Figure 1 As shown, the muffler body 1 can preferably be cylindrical. Alternatively, the muffler body 1 can be square.

[0063] In the above embodiments of this utility model, preferably, the silencing hole 12 is a circular hole, and the exhaust port 6 is a plurality of square holes arranged in an array. The area of ​​the square holes is larger than that of the circular holes, which can change the frequency of the noise. The silencing hole 12 is preferably circular to avoid wear and damage to the silencing tube 3 when it is pulled. Of course, alternatively, the silencing hole 12 can also be other shapes, such as square holes; the exhaust port 6 can also be other shapes, such as circular holes. In addition, the exhaust hole 11 on the cover plate 2 is also preferably a circular hole.

[0064] In the above embodiments of this utility model, preferably, the silencing holes 12 are evenly distributed on the wall of the muffler pipe 3 away from the air inlet 10 or the cover plate 2. When the silencing holes 12 are inside the muffler body 1, they are adjacent to the closed end 9 of the muffler body 1. The exhaust port 6 is disposed on the side wall of the muffler body 1 and adjacent to the open end 8 of the muffler body 1, thereby ensuring that the silencing holes 12 and the exhaust port 6 are staggered. By adopting this structural arrangement of the silencing holes 12 and staggering the silencing holes 12 and the exhaust port 6, the noise propagation path can be longer, the noise intensity loss can be greater, and thus the final noise can be lower.

[0065] When the exhaust muffler in the above embodiments is used in the nitrogen exhaust of an oxygen generator, such as Figure 1-3 As shown, the air inlet 10 is connected to the nitrogen exhaust pipe (not shown) of the oxygen generator, and the assembled exhaust silencer is fixed to the oxygen generator casing by the fixing part 7. The nitrogen discharged from the nitrogen exhaust pipe of the oxygen generator enters the hollow silencer pipe 3 through the air inlet 10, and then is quickly discharged to the surroundings through several silencer holes 12 on the wall of the silencer pipe 3, so that the flow velocity and impact of the nitrogen when entering the silencer body 1 are reduced. At this time, the nitrogen will flow through the multi-layer annular porous felt 4 sleeved on the silencer pipe 3. The felt 4 will reduce the noise of the nitrogen emission. The felt 4 effectively absorbs the sound waves generated during nitrogen emission. Any nitrogen noise not completely reduced by the felt 4 enters the sound insulation ring 5. Here, the sound waves undergo further reflection and interference during propagation, constantly changing direction and frequency, further reducing the sound pressure and frequency of the nitrogen noise. Then, the nitrogen is discharged through the array-structured exhaust ports 6 on the silencer body 1 and the array-structured exhaust holes 11 on the cover plate 2, further reducing the flow rate and impact, thus further reducing and eliminating the nitrogen noise. Of course, to better reduce or eliminate noise during nitrogen emission from the oxygen generator, the relevant pipe structure and dimensions can be rationally designed to extend the noise propagation path and increase losses within the pipes, resulting in lower noise during emission and achieving the goal of noise reduction.

[0066] Furthermore, the silencing tube 3, felt 4, and sound insulation ring 5 described in the above embodiments are merely specific examples of silencing structures or components, and do not limit the present invention. That is, the silencing tube 3, felt 4, and sound insulation ring 5 can be replaced by other components with similar structures or functions.

[0067] In addition, an oxygen generator is provided in the embodiments of this utility model, which includes the exhaust silencer as described above.

[0068] Therefore, the exhaust muffler provided in this embodiment of the present invention adopts a multi-layer impedance composite structure design, which has the advantages of simple structure and significant noise reduction effect. This invention can effectively reduce the noise of nitrogen emission from oxygen generators, meet the noise reduction needs of different occasions, and has broad application prospects.

[0069] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0070] Furthermore, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to the process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0071] The above descriptions are merely embodiments of this application, which enable those skilled in the art to understand and implement this application. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

Claims

1. An exhaust silencer, characterized by, The muffler comprises: a muffler body provided with an exhaust port; a first sound attenuation component provided in the muffler body, the first sound attenuation component being a hollow structure, one end of the first sound attenuation component being provided with an air inlet, and a plurality of sound attenuation holes being provided on the wall of the first sound attenuation component.

2. The exhaust silencer according to claim 1, characterized in that Further comprising: a filling component filled between the muffler body and the first sound attenuation component.

3. The exhaust silencer according to claim 2, characterized in that The filling component comprises: a second sound attenuation component sleeved on the first sound attenuation component; and a third sound attenuation component in which the first sound attenuation component and the second sound attenuation component are inserted.

4. The exhaust silencer according to claim 3, characterized in that The first sound attenuation component comprises a cylindrical sound attenuation pipe, the second sound attenuation component comprises a multi-layer annular porous felt, and the third sound attenuation component comprises a sound insulation ring.

5. The exhaust silencer according to claim 3, characterized in that The third sound attenuation component is integrally injection molded with the muffler body.

6. The exhaust silencer according to claim 1, characterized in that The sound attenuation holes are circular holes, and the exhaust port comprises a plurality of square holes in an array structure design.

7. The exhaust silencer of claim 1, wherein The sound attenuation holes are uniformly provided on the wall of the first sound attenuation component away from the air inlet, the sound attenuation holes are adjacent to the closed end of the muffler body when in the muffler body, and the exhaust port is provided on the side wall of the muffler body and adjacent to the open end of the muffler body so that the sound attenuation holes and the exhaust port are staggered.

8. The exhaust silencer of claim 1, wherein Further comprising: a cover plate, a middle portion of the cover plate being in communication with the air inlet, the cover plate carrying the first sound attenuation component to be inserted into the muffler body from the open end of the muffler body, the cover plate closing the open end and being detachably connected with the muffler body.

9. The exhaust silencer of claim 1, wherein Further comprising: a fixing portion provided on the outer side of the muffler body for mounting and fixing the muffler body.

10. An oxygen generator, characterized by comprising: The exhaust muffler comprises any one of the preceding claims 1-9. The exhaust muffler comprises any one of the preceding claims 1-9.

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