A silencer, an oxygen generator, and a device having a silencer

Abstract

This application provides a silencer, an oxygen generator, and a device with a silencer. The silencer includes: a housing; a flow-guiding silencer assembly disposed inside the housing, including: at least one longitudinal flow-guiding baffle extending axially along the housing; at least one transverse flow-guiding baffle, each transverse flow-guiding baffle penetrating the longitudinal flow-guiding baffle and extending to the inner wall of the housing; an air inlet disposed in the housing; and an exhaust outlet disposed in the housing. The longitudinal and transverse flow-guiding baffles divide the inner cavity of the housing into multiple chambers, the air inlet corresponds to one of the multiple chambers, and the exhaust outlet corresponds to another of the multiple chambers. The silencer of this application embodiment can significantly improve noise reduction without affecting gas flow efficiency.

Description

Technical Field

[0001] This application relates to the field of noise reduction structures for fluid channels, and more specifically, embodiments of this application relate to a silencer, an oxygen generator, and a device having a silencer. Background Technology

[0002] Suction machines, nebulizers, air conditioners, heating and cooling units, and oxygen concentrators all generate gas flow noise during use. Existing technologies to reduce this noise include resistive noise reduction, which uses sound-absorbing materials to convert sound energy into heat energy. However, this method is not very effective in reducing noise. For example, even silent oxygen concentrators still produce some noise during air intake, affecting the user experience.

[0003] Furthermore, while existing silencers designed to eliminate aerodynamic noise can reduce noise to some extent, their noise reduction effect is limited and may affect gas flow efficiency. Therefore, developing a silencer for intake or exhaust with better noise reduction performance has become an urgent technical problem to be solved. Utility Model Content

[0004] The purpose of this application is to provide a silencer, an oxygen generator, and a device with a silencer. The silencer of this application can significantly improve the noise reduction effect without affecting the gas flow efficiency.

[0005] In a first aspect, embodiments of this application provide a muffler, the muffler comprising: a housing; a flow-guiding muffler assembly disposed inside the housing, comprising: at least one longitudinal flow-guiding baffle extending axially along the housing; at least one transverse flow-guiding baffle, each transverse flow-guiding baffle penetrating the longitudinal flow-guiding baffle and extending to the inner wall of the housing; an air inlet disposed in the housing; and an exhaust outlet disposed in the housing; wherein the longitudinal flow-guiding baffle and the transverse flow-guiding baffle are used to divide the inner cavity of the housing into multiple chambers, the air inlet corresponds to one of the multiple chambers, the exhaust outlet is disposed corresponding to another of the multiple chambers, and at least one opening is provided on the longitudinal flow-guiding baffle and / or the transverse flow-guiding baffle corresponding to different chambers.

[0006] The embodiments of this application construct a multi-path long-path diversion structure through transverse and longitudinal diversion baffles to achieve continuous acoustic impedance matching. Even without sound-absorbing materials, good noise reduction can be achieved, thereby significantly improving the noise reduction effect without affecting airflow.

[0007] In some embodiments, the number of longitudinal flow guide baffles is one, and each transverse flow guide baffle is divided into left and right parts by the longitudinal flow guide baffles to form two rows of serial chambers in the housing. The at least one transverse flow guide baffle is a plurality of parallel and spaced flow guide baffles. The openings on adjacent transverse flow guide baffles are arranged alternately from left to right, and the openings on the longitudinal flow guide baffles are shared by the left and right chambers.

[0008] The embodiments of this application, through the innovative concept of two types of flow guide baffles and setting openings on various types of flow guide baffles, can reduce noise by supplementing peaks and valleys through reflection, thereby maximizing the noise elimination effect through reflection superposition without affecting the smooth passage of airflow.

[0009] In some embodiments, the air inlet is disposed on a first side of the housing; and the exhaust outlet is disposed on a second side of the housing; wherein the second side is the opposite side of the first side.

[0010] Some embodiments of this application further reduce airflow noise by placing the air inlet and exhaust outlet on opposite sides of the housing, thereby extending the length of the airflow passage.

[0011] In some embodiments, the plurality of parallel and spaced-apart flow guides include: a first transverse flow guide and a second transverse flow guide, wherein the first transverse flow guide, the second transverse flow guide, and the longitudinal flow guide are used to divide the inner cavity of the housing into six chambers.

[0012] The embodiments of this application can minimize the impact of the muffler on airflow by introducing two parallel transverse guide vanes, and at the same time minimize airflow noise.

[0013] In some embodiments, the muffler includes: an upstream left chamber, formed by the left side of the first transverse guide baffle, the front portion of the longitudinal guide baffle, and the end wall of the housing; an upstream right chamber, formed by the right side of the first transverse guide baffle, the front portion of the longitudinal guide baffle, and the end wall of the housing; a midstream left chamber, formed by the left side of the first transverse guide baffle, the middle portion of the longitudinal guide baffle, and the left side of the second transverse guide baffle; a midstream right chamber, formed by the right side of the first transverse guide baffle, the middle portion of the longitudinal guide baffle, and the right side of the second transverse guide baffle; and a downstream left chamber, formed by the left side of the second transverse guide baffle, the front portion of the longitudinal guide baffle, and the end wall of the housing; The rear part of the flow guide baffle and the end wall of the housing are enclosed; the downstream right chamber is enclosed by the right side of the second transverse flow guide baffle, the rear part of the longitudinal flow guide baffle and the end wall of the housing; wherein, the front and middle parts of the longitudinal flow guide baffle are respectively provided with an opening, the rear part of the longitudinal flow guide baffle is provided with multiple openings, and the left side of the first transverse flow guide baffle and the right side of the second transverse flow guide baffle are respectively provided with an opening; or, the front and middle parts of the longitudinal flow guide baffle are respectively provided with an opening, the rear part of the longitudinal flow guide baffle is provided with multiple openings, and the right side of the first transverse flow guide baffle and the left side of the second transverse flow guide baffle are respectively provided with an opening.

[0014] The embodiments of this application can minimize noise by setting up a multi-stage parallel chamber from the air inlet to the exhaust outlet (each stage corresponds to a different part of the longitudinal flow guide baffle, and the parallel chamber is obtained by dividing the interior of the shell by the longitudinal flow guide baffle) and setting multiple openings on the last stage chamber.

[0015] In some embodiments, the size of each of the plurality of openings provided at the rear of the longitudinal flow guide baffle is smaller than the size of the openings provided at other locations on the longitudinal flow guide baffle and on the first and second transverse flow guide baffles.

[0016] Some embodiments of this application can further reduce airflow noise by reducing the chamber opening during the final stage of airflow.

[0017] In some embodiments, the opening shape is square or circular.

[0018] Some embodiments of this application can employ directional openings and circular openings to achieve better airflow noise reduction.

[0019] In some embodiments, the rear portion of the longitudinal flow guide baffle is provided with nine square holes.

[0020] Some embodiments of this application reduce noise by setting nine square holes in the longitudinal flow guide baffle of the chamber near the exhaust port, thereby changing the airflow state (laminar / turbulent) and disturbing the noise propagation medium.

[0021] In some embodiments, the volume of the downstream left chamber is smaller than the volumes of the remaining chambers, or the volume of the downstream right chamber is smaller than the volumes of the remaining chambers.

[0022] Some embodiments of this application provide a smaller chamber in the last stage (i.e., away from the muffler inlet) to further enhance the noise reduction effect on the airflow.

[0023] In some embodiments, the muffler further includes: sound-absorbing foam disposed in at least a portion of the chamber inside the housing; and / or damping plate foam disposed on the outer wall of the longitudinal flow guide baffle and / or the transverse flow guide baffle.

[0024] Some embodiments of this application can be combined with absorbent materials such as sound-absorbing cotton to further reduce noise in scenarios that require airflow noise reduction and are not sensitive to airflow velocity.

[0025] In some embodiments, the housing includes: a first half-shell with a first connecting portion at its open end; and a second half-shell with a second connecting portion at its open end; wherein the first connecting portion and the second connecting portion are used to connect the first half-shell and the second half-shell to form a sealed cavity.

[0026] Some embodiments of this application use two separate, connectable, and detachable half-shells to form a housing, which facilitates the replacement or repair of the flow-guiding and noise-reducing components inside the housing.

[0027] In some embodiments, the air inlet is disposed in the first half-shell, the exhaust outlet is disposed in the second half-shell, and the volume of the chamber corresponding to the air inlet is smaller than the volume of the chamber corresponding to the exhaust outlet.

[0028] Some embodiments of this application can minimize noise by placing the air inlet and exhaust outlet on opposite sides of the housing.

[0029] In some embodiments of this application, the two ends of the air inlet are circular nozzles.

[0030] The embodiments of this application use a circular nozzle to better ensure smooth airflow.

[0031] Secondly, some embodiments of this application provide an oxygen generator, the oxygen generator including: an air inlet pipe, an air inlet connecting component and an exhaust outlet connecting component; and a muffler as described in any embodiment of the first aspect; wherein the air inlet connecting component is connected to the air inlet of the muffler, and the exhaust outlet connecting component is connected to the exhaust outlet of the muffler.

[0032] Thirdly, some embodiments of this application provide a device with a silencer, comprising: a fluid conduction path; a silencer as described in any of the embodiments included in the first aspect; wherein the silencer is connected to the fluid conduction path. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A top view of a muffler provided in an embodiment of this application; Figure 2 This is a schematic diagram of the airflow direction of the muffler provided in the embodiments of this application; Figure 3 This is a cutaway view of the muffler provided in an embodiment of this application; Figure 4 This is a block diagram of the oxygen generator provided in the embodiments of this application. Detailed Implementation

[0035] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0036] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] To address the technical problems identified in the background section, embodiments of this application provide a silencer that divides the interior of the housing into multiple independent chambers using guide baffles distributed along the axial and transverse directions of the housing. Openings are provided on at least one side of the guide baffles in each chamber. These openings on the transverse and longitudinal guide baffles allow airflow to pass through while simultaneously reducing noise. Compared to silencers provided by related technologies, the silencer provided in this application significantly reduces airflow noise with minimal impact on gas flow.

[0038] Please refer to Figure 1 , Figure 1 A muffler for eliminating airflow noise is provided in some embodiments of this application. The muffler includes: a housing 100, a flow-guiding muffler assembly, an air inlet 401, and an exhaust outlet 402.

[0039] In some embodiments of this application, the housing 100 is a single unit; in other embodiments, the housing 100 comprises two half-housing units. In still other embodiments, the housing may also be formed by more than two (e.g., top, bottom, and four sides) detachable and combinable surfaces.

[0040] In embodiments of this application, a flow-guiding and noise-reducing assembly is disposed inside the housing 100. This flow-guiding and noise-reducing assembly includes: at least one longitudinal flow-guiding baffle 202 (only one longitudinal flow-guiding baffle is shown in the figure) and one or more transverse flow-guiding baffles 200. Figure 1 (Multiple transverse flow deflectors are shown).

[0041] In some embodiments of this application, multiple longitudinal flow guide baffles can be provided if the airflow rate is determined to be greater than a set threshold. It should be noted that the accompanying drawings of the embodiments of this application only show the case including one longitudinal flow guide baffle; however, the embodiments of this application do not limit the number of longitudinal flow guide baffles included. For example, in other embodiments of this application, multiple parallel longitudinal flow guide baffles can be provided within the housing. Multiple longitudinal flow guide baffles can divide the housing into more parallel chambers, further improving the noise reduction effect.

[0042] In some embodiments of this application, such as Figure 1 As shown, there is one longitudinal flow guide baffle 202, and this longitudinal flow guide baffle extends along the axial direction of the housing 100. The longitudinal flow guide baffle forms a left-right dual-path parallel chamber structure within the housing 100, which can broaden the noise reduction frequency band. For example... Figure 1As shown in the embodiments of this application, each transverse flow guide baffle penetrates the longitudinal flow guide baffle and extends to the inner wall of the housing, and each transverse flow guide baffle is arranged perpendicular to the longitudinal flow guide baffle. That is, different transverse flow guide baffles are arranged parallel to each other, which can also form a series chamber. It can be understood that forming a multi-series and multi-parallel chamber structure within the housing can broaden the noise reduction frequency band. In some embodiments of this application, the air inlet is located on the first surface of the housing and the exhaust outlet is located on the second surface of the housing, wherein the second surface is the opposite surface of the first surface. For example, the first surface is the upper surface of the housing 100 and the second surface is the lower surface of the housing 100. In other embodiments of this application, the air inlet and the exhaust outlet can be located on the same surface of the housing.

[0043] It should be noted that, in the embodiments of this application, the longitudinal and transverse flow guide baffles are used to divide the inner cavity of the housing into multiple chambers. The air inlet corresponds to one of the multiple chambers, and the exhaust port corresponds to another of the multiple chambers. At least one opening is provided on the longitudinal and / or transverse flow guide baffles corresponding to different chambers. For example, in some embodiments of this application, openings are provided on both the longitudinal and transverse flow guide baffles corresponding to one or more chambers; or, openings are provided on the longitudinal flow guide baffles corresponding to one or more chambers; or, openings are provided on both the transverse flow guide baffles corresponding to one or more chambers. For example, in some embodiments of this application, two chambers sharing the same portion of the longitudinal flow guide baffle share the same opening, and adjacent transverse flow guides have openings staggered on opposite sides. If a longitudinal flow guide baffle is included, the opposite sides are the left and right sides, respectively.

[0044] In the embodiments of this application, each transverse flow guide baffle is divided into left and right parts by a longitudinal flow guide baffle. The longitudinal flow guide baffle divides the inner cavity of the housing 100 into two rows of chambers. At least one transverse flow guide baffle can be multiple parallel and spaced flow guide baffles.

[0045] It should be noted that, in the embodiments of this application, the openings on adjacent transverse baffles are arranged in a staggered manner. For example... Figure 1 As shown, two adjacent transverse flow guide baffles 200 near the housing air inlet have an opening 500 on each side; one has an opening 500 on the left side, and the other has an opening 500 on the right side. Similarly, two transverse flow guide baffles near the housing exhaust outlet have an opening 500 on each side. In embodiments of this application, the openings on the longitudinal flow guide baffles are shared by both chambers. Figure 1 As shown, all openings 300 on the longitudinal flow guide baffle 202 are shared by the left and right chambers.

[0046] and Figure 1The airflow direction corresponding to the muffler is as follows Figure 2 As shown by the yellow arrows, the airflow enters from the intake 401 and flows forward along the yellow arrows through the openings, finally reaching the exhaust 402.

[0047] The following is combined with Figure 3 An example is provided of a muffler with one longitudinal baffle and two transverse baffles.

[0048] like Figure 3 As shown, in some embodiments of this application, a plurality of parallel and spaced-apart flow guides include, for example, a first transverse flow guide 201 and a second transverse flow guide 203, wherein the first transverse flow guide 201, the second transverse flow guide 203 and the longitudinal flow guide 202 are used to divide the inner cavity of the housing 100 into six chambers.

[0049] In some embodiments of this application, the silencer includes: The upstream left chamber is formed by the left side of the first transverse flow guide baffle 201, the front part of the longitudinal flow guide baffle 202, and the end wall of the shell, and in Figure 3 An air inlet 401 is provided on the housing corresponding to the upstream left chamber.

[0050] The upstream right chamber is formed by the right side of the first transverse flow guide baffle 201, the front part of the longitudinal flow guide baffle 202, and the end wall of the shell.

[0051] It should be noted that the upstream right chamber and the upstream left chamber share the front part of the longitudinal flow guide baffle 202. In some embodiments of this application, the front part of the longitudinal flow guide baffle 202 is provided with a first opening 301 shared by the upstream right chamber and the upstream left chamber, and a second opening 501 is provided on the right side of the first transverse flow guide baffle 201 corresponding to the upstream right chamber.

[0052] The middle left chamber is formed by the left side of the first transverse flow guide baffle 201, the middle part of the longitudinal flow guide baffle 202, and the left side of the second transverse flow guide baffle 203.

[0053] The middle right chamber is formed by the right side of the first transverse flow guide baffle, the middle part of the longitudinal flow guide baffle, and the right side of the second transverse flow guide baffle.

[0054] It should be noted that the midstream right chamber and the midstream left chamber share the middle portion of the longitudinal flow guide baffle 202. In some embodiments of this application, a third opening 302 shared by the midstream right chamber and the midstream left chamber is provided on the middle portion of the longitudinal flow guide baffle 202, and a fourth opening 502 is provided on the left side of the second transverse flow guide baffle 203 corresponding to the midstream left chamber. That is to say, the second opening 501 on the adjacent first transverse flow guide baffle 201 and the fourth opening 502 on the second transverse flow guide baffle 203 are arranged alternately from left to right.

[0055] The downstream left chamber is formed by the left side of the second transverse flow guide baffle 203, the rear part of the longitudinal flow guide baffle 202, and the end wall of the housing.

[0056] The downstream right chamber is formed by the right side of the second transverse flow guide baffle 203, the rear part of the longitudinal flow guide baffle 202, and the end wall of the housing.

[0057] It should be noted that the downstream right chamber and the downstream left chamber share the rear portion of the longitudinal flow guide baffle 202. In some embodiments of this application, the rear portion of the longitudinal flow guide baffle 202 is provided with multiple openings shared by the downstream right chamber and the downstream left chamber, for example, in Figure 3 The number of multiple openings is nine (for example, such as...). Figure 3 The longitudinal flow guide baffle shown has nine square holes (i.e., square hole set 303 or nine circular holes) at its rear, and a fourth opening 502 is provided on the left side of the second transverse flow guide baffle 203 in the downstream left chamber. It can be understood that the number of square holes included in the square hole set 303 can be designed as other numbers of square holes or circular holes, or openings of other shapes, depending on specific needs.

[0058] It is easy to understand that in some embodiments of this application, the longitudinal flow guide baffle has an opening at its front and middle portions, and multiple openings at its rear portion. Furthermore, the first transverse flow guide baffle and the second transverse flow guide baffle each have an opening on their left and right sides, respectively. In other embodiments of this application, the longitudinal flow guide baffle has an opening at its front and middle portions, and multiple openings at its rear portion. Additionally, the first transverse flow guide baffle and the second transverse flow guide baffle each have an opening on their right and left sides, respectively.

[0059] To further improve noise reduction, in some embodiments of this application, the chamber at the end along the airflow direction is smaller, and the opening size on the longitudinal guide baffle of the corresponding chamber is also smaller than the opening in the direction closer to the airflow inflow (i.e., the airflow inflow direction of the muffler). For example, in some embodiments of this application, the size of each of the multiple openings provided at the rear part of the longitudinal guide baffle (i.e., the part away from the air inlet of the airflow flowing into the muffler, which is close to the exhaust port of the airflow in the muffler) is smaller than the size of the openings provided at other locations on the longitudinal guide baffle (i.e., the location relative to the air inlet of the airflow flowing into the muffler) and on the first and second transverse guide baffles. For example, in some embodiments of this application, the volume of the downstream left chamber (with an exhaust port provided on the housing corresponding to this chamber) is smaller than the volume of the other chambers, or, in other embodiments of this application, the volume of the downstream right chamber (with an exhaust port provided on the housing corresponding to this chamber) is smaller than the volume of the other chambers.

[0060] In some embodiments of this application, the opening shape is square or circular.

[0061] For scenarios where airflow velocity is not sensitive, if further improvement in noise reduction is required, the muffler described in some embodiments of this application further includes at least one of sound-absorbing cotton and damping plate sponge, wherein the sound-absorbing cotton is disposed in at least a portion of the cavity inside the housing of the embodiment of this application; and the damping plate sponge is disposed on the outer wall of the longitudinal flow guide baffle and / or the transverse flow guide baffle of some embodiments of this application.

[0062] At least for the purpose of facilitating the maintenance of the muffler or the replacement of internal components, the housing in some embodiments of this application includes: a first half-housing and a second half-housing, wherein the opening end of the first half-housing is provided with a first connecting portion, and the opening end of the second half-housing is provided with a second connecting portion, and the first connecting portion and the second connecting portion are used to connect the first half-housing and the second half-housing to form a sealed cavity.

[0063] For example, such as Figure 3 As shown, the housing in some embodiments of this application includes a first half-shell 101 and a second half-shell 102. The edge of the opening end of the first half-shell 101 is provided with a flange, and the edge of the opening end of the corresponding second half-shell 102 is provided with a groove (not shown in the figure). The first half-shell and the second half-shell can be connected by the flange and the groove to obtain a sealed chamber.

[0064] It is understandable that those skilled in the art may employ different methods to enable the first and second half-shells to be connected to form a sealed chamber. Figure 3 The specific form of the connecting part is not limited in the embodiments of this application.

[0065] To maximize the airflow path and thus improve the noise reduction effect, such as Figure 3 As shown, in some embodiments of this application, the air inlet 401 is disposed on the upper surface of the first half-shell 101, and the exhaust outlet 402 is disposed on the lower surface of the second half-shell 102, the lower surface including a first surface and a second surface. The exhaust outlet is disposed on the first surface, and the second surface corresponds to the remaining chambers other than the chamber corresponding to the exhaust outlet. The second surface is closer to the upper surface of the shell than the first surface. This recessed design of the second surface is more conducive to the airflow pipeline layout. It should be noted that the volume of the chamber corresponding to the air inlet is smaller than the volume of the chamber corresponding to the exhaust outlet. For example, in some embodiments of this application, the air inlet is disposed on the first half-shell corresponding to the upstream left chamber; the exhaust outlet is disposed on the second half-shell corresponding to the downstream right chamber; wherein the volume of the downstream right chamber is smaller than the volume of the upstream left chamber. In some other embodiments of this application, an air inlet is disposed on the first half-shell corresponding to the upstream right chamber; an exhaust outlet is disposed on the second half-shell corresponding to the downstream left chamber; wherein the volume of the downstream left chamber is smaller than the volume of the upstream right chamber.

[0066] In order to improve the airflow velocity so that it can pass smoothly through the muffler, the air inlet in some embodiments of this application has circular nozzles at both ends, that is, the air inlet has an inlet circular nozzle and an outlet circular nozzle.

[0067] Some embodiments of this application also provide an oxygen generator, which includes: an air intake pipe and a muffler as described in the above embodiments, wherein the muffler is connected to the air intake pipe.

[0068] like Figure 4 As shown, some embodiments of the oxygen generator in this application include a silencer 10, a compressor assembly 20, a cooling system 30, an air storage tank assembly 40, and an oxygen buffer pipe 50 as described in the above embodiments. The air inlet of the silencer 10 receives external air through an air inlet pipe (not shown in the figure). The air undergoes silencing, compression, and cooling to obtain the required oxygen, and then the corresponding oxygen is output.

[0069] It should be noted that the oxygen generator in this application embodiment is merely an exemplary structure, and those skilled in the art can employ different methods. Figure 4 More components or devices can also be used than Figure 4 Fewer components or devices are used as components of oxygen generators, all of which include a silencer as described in the above embodiments.

[0070] The silencer for the oxygen concentrator's air intake in this application can further reduce the noise generated during the oxygen concentrator's air intake process, improving user comfort and a quieter experience. This silencer significantly improves noise reduction while ensuring smooth airflow.

[0071] This application provides an oxygen generator with the aforementioned silencer, which reduces the noise generated during operation and improves the user experience.

[0072] As described in the above embodiments, the intake silencer of the oxygen generator in some embodiments of this application includes a flow-guiding silencer assembly (i.e., a chamber silencer structure) and a housing.

[0073] The flow dividers (including longitudinal and transverse flow dividers) between different chambers in the flow-guiding and noise-absorbing assembly are used to disperse airflow and reduce noise generated by airflow impact; the sound-absorbing cotton has excellent sound absorption performance and can further absorb residual noise; the damping plate sponge has the function of a flow divider in the vibration-damping and noise-absorbing chamber; in some embodiments of this application, the flow dividers (including longitudinal and transverse flow dividers) achieve the effects of small square hole noise reduction and frequency conversion, further reducing the noise level.

[0074] In some embodiments of this application, the muffler's air inlet adopts a design with round nozzles at both ends to reduce airflow resistance and improve gas flow efficiency. Simultaneously, the air inlet of the chamber's silencing structure is provided with a square hole, the side walls are lined with damping plates and sound-absorbing sponges, and the chamber is filled with sound-absorbing sponges to further reduce noise.

[0075] The silencers in some embodiments of this application have a compact and simple overall structure, making them easy to install and use. The housing is made of high-polymer ABS material and welded together using ultrasonic technology, providing excellent sealing and reliability. The silencers in these embodiments significantly reduce noise. Through the combined use of multi-layered sound-absorbing structures and materials, a significant reduction in intake noise is achieved, enhancing the user's quiet experience. In addition to reducing noise, the embodiments of this application also ensure smooth gas flow. For example, some embodiments of this application ensure smooth gas flow through the design of the air inlet and the overall structure (i.e., the design of the openings on the transverse and longitudinal flow guides), without affecting the rated intake volume of the oxygen concentrator.

[0076] like Figure 3 As shown, the silencer for the air intake of the oxygen generator includes a first half-shell 101, a second half-shell 102, square holes provided on the longitudinal flow guide plate, and square openings staggered on the transverse flow guide plate.

[0077] like Figure 3As shown, in some embodiments of this application, multiple chambers have irregular shapes, meaning that the sizes of different chambers vary (this variation is beneficial for multi-band noise reduction). Each chamber has a square air inlet on its baffle plate, and the end air inlet is configured with nine square holes (corresponding to...). Figure 3 (A set of square holes 303). Damping sponge is attached to the outer surface of the flow guide baffle of the chamber, and sound-absorbing sponge is placed at the intervals of the chamber to absorb noise. The flow guide and noise reduction assembly is set in the cavity of the complete shell composed of two half shells to absorb the noise generated when the compressor intakes.

[0078] In some embodiments of this application, when the oxygen concentrator is running, the intake noise generated by the compressor intake passes through the silencer of this embodiment (the silencer of this embodiment is connected to the compressor input end, i.e., the air intake end). The air enters from the intake port on the silencer, passes through the sound-absorbing cotton, and then passes through the first opening 301, changing the noise generated by the compressor's operating sound frequency. The noise that is not eliminated continues to the rear end of the operation. The second opening 501 further eliminates and frequency-isolates the noise of the incoming gas. The noise intensity is reduced by the sound-absorbing cotton and enters the third opening 302. The air then passes through the third opening 302, and the noise intensity is reduced by the sound-absorbing cotton and enters the fourth opening 502. The noise that is not eliminated continues to the rear end of the operation. The fourth opening 502 enters the nine noise-reducing diversion holes of the nine smaller square holes (i.e., the square hole set 303), which eliminate the frequency and intensity of the noise again and generate a relatively smaller noise. The second half-shell, combined with the longitudinal and transverse baffles, forms a noise-reducing air duct that further isolates and eliminates the noise that was not eliminated at the front end. The intake muffler can also adjust the intensity of the noise canceller according to the muffler material to achieve the best noise reduction effect.

[0079] The embodiments of this application have the following advantages and effects: Excellent noise reduction effect: The injection molding structure changes the intensity and frequency of noise and reduces the intensity of sound waves hitting the flow guide baffle, thus significantly reducing the noise generated by the oxygen generator.

[0080] Easy assembly: The applied part is fixed with a single screw. The noise reduction component is pressed together with the base body and the sound insulation sheet metal, making the operation simple and easy.

[0081] In some embodiments of this application, a silencer is installed at the front end of an oxygen-generating compressor to change the frequency of air intake and eliminate the noise generated by the compressor in real time.

[0082] Some embodiments of this application provide a device with a muffler, comprising: a fluid conduction path; a muffler as described in any of the above embodiments; wherein the muffler is connected to the fluid conduction path.

[0083] It should be noted that the device with a silencer can be a medical device such as a suction device or nebulizer, a household appliance such as an air conditioner or heating / cooling unit, or a transportation device such as a motorcycle or automobile. The embodiments of this application do not limit the specific type of device; it is understood that devices equipped with the silencers described in the above examples of this application are all covered within the scope of the rights claimed in this application.

[0084] The fluid conduction pathways in this application embodiment are pathways for gas transmission, including exhaust pipes or intake pipes of the corresponding equipment.

[0085] It is understood that the silencer of this application can also be used in other equipment that requires airflow noise reduction to reduce the airflow noise of the corresponding equipment.

[0086] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0087] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0088] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0089] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0090] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0091] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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. Furthermore, 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 such a process, method, article, or apparatus. Without further limitations, 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.

Claims

1. A muffler characterized by comprising: The silencer includes: case; A flow-guiding and noise-reducing assembly, disposed inside the housing, includes: At least one longitudinal flow guide baffle extends along the axial direction of the housing; At least one transverse flow guide baffle, each transverse flow guide baffle penetrating the longitudinal flow guide baffle and extending to the inner wall of the housing; An air inlet is provided in the housing; and An exhaust port is provided in the housing; The longitudinal and transverse flow guides are used to divide the inner cavity of the housing into multiple chambers. The air inlet corresponds to one of the multiple chambers, and the exhaust port corresponds to another of the multiple chambers. At least one opening is provided on the longitudinal and / or transverse flow guides corresponding to different chambers.

2. The muffler of claim 1, wherein The number of longitudinal flow guide baffles is one, and each transverse flow guide baffle is divided into left and right parts by the longitudinal flow guide baffles, forming two rows of serial chambers in the shell. The at least one transverse flow guide baffle is a plurality of parallel and spaced flow guide baffles. The openings on the adjacent transverse baffles are arranged alternately from left to right, and the openings on the longitudinal baffles are shared by the left and right chambers.

3. The silencer as described in claim 2, characterized in that, The plurality of parallel and spaced-apart flow guide baffles include: a first transverse flow guide baffle and a second transverse flow guide baffle, wherein the first transverse flow guide baffle, the second transverse flow guide baffle and the longitudinal flow guide baffle are used to divide the inner cavity of the shell into six chambers.

4. The muffler of claim 3 wherein, The silencer includes: The upstream left chamber is formed by the left side of the first transverse flow guide baffle, the front part of the longitudinal flow guide baffle, and the end wall of the shell; The upstream right chamber is formed by the right side of the first transverse flow guide baffle, the front part of the longitudinal flow guide baffle, and the end wall of the shell. The middle left chamber is formed by the left side of the first transverse flow guide baffle, the middle part of the longitudinal flow guide baffle, and the left side of the second transverse flow guide baffle; The middle right chamber is formed by the right side of the first transverse flow guide baffle, the middle part of the longitudinal flow guide baffle, and the right side of the second transverse flow guide baffle. The downstream left chamber is formed by the left side of the second transverse flow guide baffle, the rear part of the longitudinal flow guide baffle, and the end wall of the shell; The downstream right chamber is formed by the right side of the second transverse flow guide baffle, the rear part of the longitudinal flow guide baffle, and the end wall of the shell. in, The longitudinal flow guide baffle has an opening at its front and middle portions, and multiple openings at its rear portion. The first transverse flow guide baffle has an opening on its left side, and the second transverse flow guide baffle has an opening on its right side; or... The longitudinal flow guide baffle has an opening at the front and middle parts, and multiple openings at the rear. The first transverse flow guide baffle and the second transverse flow guide baffle each have an opening on the right side and the left side, respectively.

5. The muffler of claim 4 wherein, The size of each of the multiple openings provided at the rear of the longitudinal flow guide baffle is smaller than the size of the openings provided at other locations on the longitudinal flow guide baffle and on the first and second transverse flow guide baffles.

6. The muffler of claim 5 wherein, The opening shape is square or round.

7. The muffler of claim 5 wherein, The rear part of the longitudinal flow guide baffle has nine square holes.

8. The muffler as described in any one of claims 1-6, characterized in that, The air inlet is located on the first surface of the housing; and The exhaust port is located on the second side of the housing; The second face is the face opposite to the first face.

9. The muffler of claim 4 wherein, The volume of the downstream left chamber is smaller than the volume of the other chambers, or the volume of the downstream right chamber is smaller than the volume of the other chambers.

10. The muffler of any one of claims 1-5, wherein, The silencer also includes: Sound-absorbing cotton is disposed in at least a portion of the cavities inside the housing; and / or Damping plate sponge is disposed on the outer wall of the longitudinal flow guide baffle and / or the transverse flow guide baffle.

11. The muffler of claim 1 wherein, The housing includes: The first half-shell has a first connecting part at its open end; The second half-shell has a second connecting part at its open end; The first connecting part and the second connecting part are used to connect the first half-shell and the second half-shell to form a sealed cavity.

12. The muffler of claim 11, wherein, The air inlet is located in the first half-shell, the exhaust outlet is located in the second half-shell, and the volume of the chamber corresponding to the air inlet is smaller than the volume of the chamber corresponding to the exhaust outlet.

13. The muffler of any one of claims 1-7, wherein, The air inlet has round nozzles at both ends.

14. An oxygen generator, characterized by comprising: The oxygen generator includes: The air intake pipe is equipped with an air intake connection component and an exhaust connection component; The silencer as described in any one of claims 1-13; The air inlet connecting component is connected to the air inlet of the muffler, and the exhaust outlet connecting component is connected to the exhaust outlet of the muffler.

15. An apparatus having a muffler, characterized by include: Fluid conduction pathway; The silencer as described in any one of claims 1-13; The silencer is connected to the fluid transmission passage.

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