Muffler and oxygen concentrator

Abstract

The present invention provides a muffler and an oxygen concentrator, wherein the muffler includes a shell, a first support portion, and a second support portion; the first end and the second end of the shell are respectively provided with an air inlet and an air outlet; the first support portion and the second support portion are both arranged in the shell, and are distributed in a direction perpendicular to the first direction to form a first space, a second space, and a third space arranged in sequence; sound absorbing parts are both provided in the first space and the third space; the air inlet and the air outlet are both connected to the second space; the first support portion is provided with a plurality of first openings distributed along the first direction, and the second support portion is provided with a plurality of second openings distributed along the first direction; the plurality of first openings and the plurality of second openings are staggered along the first direction. The muffler of the present application is applied to an oxygen concentrator to improve the sound reduction effect of the muffler in the air path of the compressor inlet and outlet of the oxygen concentrator.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen concentrators, and in particular to a muffler and an oxygen concentrator. Background Art

[0002] An oxygen generator is a machine that produces oxygen. It mainly uses an air compressor to adsorb nitrogen in the air through a molecular sieve during pressurization to form high-concentration oxygen.

[0003] The compressor of the oxygen concentrator will produce a lot of noise when it is working, and a muffler will be installed in the air inlet and outlet of the compressor. Summary of the Invention

[0004] The main purpose of the present invention is to provide a muffler and an oxygen concentrator, so as to improve the silencing effect of the muffler in the air inlet and outlet air paths of the compressor of the oxygen concentrator.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a silencer is provided, which includes: a shell, the shell having a first end and a second end relatively arranged along a first direction; the first end and the second end of the shell are respectively provided with an air inlet and an air outlet; a first support part and a second support part, the first support part and the second support part are both arranged in the shell, and are distributed in a direction perpendicular to the first direction to form a first space, a second space and a third space arranged in sequence; sound absorbing parts are both provided in the first space and the third space; the air inlet and the air outlet are both connected to the second space, so that the second space is used for air flow to pass through; wherein, the first support part is provided with a plurality of first openings distributed along the first direction, and the second support part is provided with a plurality of second openings distributed along the first direction; the plurality of first openings and the plurality of second openings are staggered along the first direction.

[0006] Further, the first support portion includes a plurality of first support segments distributed along the first direction, and a first opening is formed between two adjacent first support segments; the lengths of the plurality of first openings along the first direction are equal, and the lengths of the plurality of first support segments along the first direction are unequal; and / or, the second support portion includes a plurality of second support segments distributed along the first direction, and a second opening is formed between two adjacent second support segments; the lengths of the plurality of second openings along the first direction are unequal, and the lengths of the plurality of second support segments along the first direction are equal.

[0007] Furthermore, from the first end to the second end of the shell, the length of the multiple first support segments along the first direction gradually decreases or increases; and / or, from the first end to the second end of the shell, the length of the multiple second openings along the first direction gradually decreases or increases.

[0008] Furthermore, the muffler includes a support frame arranged in the shell, the support frame includes four support parts, and the four support parts are a third support part, a first support part, a second support part and a fourth support part arranged in sequence along a direction perpendicular to the first direction; a first space is formed between the third support part and the first support part; a second space is formed between the first support part and the second support part; and a third space is formed between the second support part and the fourth support part.

[0009] Furthermore, the second direction is perpendicular to the first direction and to the distribution direction of the first support part and the second support part; along the second direction, each support part has a third end and a fourth end arranged opposite to each other; the support frame also includes a connecting part, and the third end or the fourth end of each support part is connected to the connecting part.

[0010] Furthermore, the muffler also includes an embedded component, at least part of which is made of flexible material; an embedded component is arranged between the third support part and the shell; and / or, an embedded component is arranged between the fourth support part and the shell; and / or, an embedded component is arranged between the connecting part and the shell.

[0011] Furthermore, the muffler also includes: an air inlet pipe, one end of the air inlet pipe is connected to the air inlet, and the other end of the air inlet pipe is used to allow air flow into; and / or, an air outlet pipe, one end of the air outlet pipe is connected to the air outlet, and the other end of the air outlet pipe is used to allow the gas in the air outlet pipe to flow out.

[0012] Furthermore, the second direction is perpendicular to the first direction and perpendicular to the distribution direction of the first support portion and the second support portion; the first opening is a strip hole extending along the second direction; and / or the second opening is a strip hole extending along the second direction.

[0013] Furthermore, the sound absorbing member in the first space is a first sound absorbing member, and the sound absorbing member in the third space is a second sound absorbing member; the first sound absorbing member and the second sound absorbing member are both made of porous sound absorbing materials, and the porosity of the first sound absorbing member is different from that of the second sound absorbing member.

[0014] According to another aspect of the present invention, an oxygen concentrator is provided, which includes a compressor and the above-mentioned muffler; the muffler is provided on the air inlet air path of the compressor; and / or the muffler is provided on the air outlet air path of the compressor.

[0015] Applying the technical solution of the present invention, the muffler includes a shell, a first support part and a second support part; the shell has a first end and a second end arranged opposite to each other along a first direction; the first end of the shell is provided with an air inlet, and the second end of the shell is provided with an air outlet; the first support part and the second support part are both arranged in the shell, and the first support part and the second support part are distributed in a direction perpendicular to the first direction to form three separate spaces, which are a first space, a second space and a third space arranged in sequence; sound absorbing parts are both provided in the first space and the third space.

[0016] The air inlet and the air outlet are both communicated with the second space, so that the second space forms a gas channel for air flow to pass through.

[0017] The first support portion is provided with a plurality of first openings distributed along a first direction, such that the first support portion includes a plurality of first support segments distributed along the first direction; a first opening is formed between two adjacent first support segments. The second support portion is provided with a plurality of second openings distributed along the first direction, such that the second support portion includes a plurality of second support segments distributed along the first direction; a second opening is formed between two adjacent second support segments.

[0018] Multiple first openings and multiple second openings are staggered along the first direction; that is, multiple first openings and multiple second support segments are arranged in a one-to-one correspondence, and multiple second openings and multiple first support segments are arranged in a one-to-one correspondence, so that each first opening and the corresponding second support segment are arranged relative to each other, and each second opening and the corresponding first support segment are arranged relative to each other.

[0019] The noise generated by the airflow in the second space is absorbed by the sound-absorbing member through the first opening and the second opening; the first support section and the second support section can reflect the noise, and by staggering the plurality of first openings and the plurality of second openings along the first direction, the incident angle of the noise when it passes through the first opening or the second opening and is absorbed by the sound-absorbing member can be changed, thereby facilitating the improvement of the noise absorption effect of the sound-absorbing member, thereby enhancing the noise reduction effect. The silencer of the present application is applied to an oxygen concentrator to improve the noise reduction effect of the silencer in the air inlet and outlet of the compressor of the oxygen concentrator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 A schematic structural diagram of a muffler according to the present invention is shown, wherein the support frame inside the shell is seen through;

[0022] Figure 2 It shows a schematic structural diagram of a support frame of a muffler according to the present invention;

[0023] Figure 3 shows a transverse cross-sectional view of a muffler according to the present invention;

[0024] Figure 4 Shown Figure 3 A schematic structural diagram of the shell of the muffler;

[0025] Figure 5 Shown Figure 3 Schematic diagram of the structure of the support frame of the muffler; wherein the first space and the third space are both provided with sound absorbing members;

[0026] Figure 6 shows a first longitudinal sectional view of a muffler according to the present invention;

[0027] Figure 7 Shown Figure 6 A schematic structural diagram of the shell of the muffler;

[0028] Figure 8 shows a second longitudinal sectional view of the muffler according to the present invention;

[0029] Figure 9 Shown Figure 8 A schematic structural diagram of the shell of the muffler;

[0030] Figure 10 Shown Figure 8 Schematic diagram of the structure of the support frame of the muffler; wherein the first space and the third space are both provided with sound absorbing members;

[0031] Figure 11 Shown Figure 2 A top view of the muffler support bracket.

[0032] The above drawings include the following reference numerals:

[0033] 10. Shell; 11. Shell body; 12. Air inlet; 13. Air outlet; 141. First groove; 142. Second groove; 143. Third groove; 15. Cover; 151. Sealing member;

[0034] 20. Support frame; 21. First support portion; 211. First opening; 212. First support section; 22. Second support portion; 221. Second opening; 222. Second support section; 23. Third support portion; 24. Fourth support portion; 25. Connecting portion;

[0035] 30. Sound absorbing member; 31. First sound absorbing member; 32. Second sound absorbing member; 41. First space; 42. Second space; 43. Third space; 51. Air inlet pipe; 52. Air outlet pipe; 61. First embedded component; 62. Second embedded component; 63. Third embedded component. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] The present invention provides a muffler for gas circuit, please refer to Figures 1 to 11 The muffler includes a shell 10, a first support portion 21 and a second support portion 22; the shell 10 has a first end and a second end arranged opposite to each other along a first direction; the first end of the shell 10 is provided with an air inlet, and the second end of the shell 10 is provided with an air outlet; the first support portion 21 and the second support portion 22 are both arranged in the shell 10, and the first support portion 21 and the second support portion 22 are distributed in a direction perpendicular to the first direction to form three separate spaces, which are a first space 41, a second space 42 and a third space 43 arranged in sequence; sound absorbing members 30 are both provided in the first space 41 and the third space 43.

[0040] The air inlet and the air outlet are both communicated with the second space 42 , so that the second space 42 forms a gas channel for air flow to pass through.

[0041] The first support portion 21 has a plurality of first openings 211 distributed along a first direction, such that the first support portion 21 includes a plurality of first support segments 212 distributed along the first direction; a first opening 211 is formed between two adjacent first support segments 212. The second support portion 22 has a plurality of second openings 221 distributed along the first direction, such that the second support portion 22 includes a plurality of second support segments 222 distributed along the first direction; a second opening 221 is formed between two adjacent second support segments 222.

[0042] The plurality of first openings 211 and the plurality of second openings 221 are staggeredly distributed along the first direction; that is, the plurality of first openings 211 and the plurality of second support segments 222 are arranged in a one-to-one correspondence, and the plurality of second openings 221 and the plurality of first support segments 212 are arranged in a one-to-one correspondence, so that each first opening 211 and the corresponding second support segment 222 are arranged relative to each other, and each second opening 221 and the corresponding first support segment 212 are arranged relative to each other.

[0043] The noise generated by the airflow in the second space 42 is absorbed by the sound absorbing member 30 through the first opening 211 and the second opening 221; the first support section 212 and the second support section 222 can reflect the noise. By staggering the plurality of first openings 211 and the plurality of second openings 221 along the first direction, the incident angle of the noise when it passes through the first opening 211 or the second opening 221 and is absorbed by the sound absorbing member 30 can be changed, thereby facilitating the improvement of the noise absorption effect of the sound absorbing member 30, thereby enhancing the noise reduction effect. The muffler of the present application is applied to an oxygen concentrator to improve the muffler effect of the muffler in the air inlet and outlet of the compressor of the oxygen concentrator.

[0044] Optionally, the first direction is parallel to the horizontal plane; the distribution direction of the first support portion 21 and the second support portion 22 is parallel to the horizontal plane, that is, the distribution direction of the first space 41, the second space 42 and the third space 43 is parallel to the horizontal plane.

[0045] Figure 3 、 Figure 4 、 Figure 6 and Figure 7 The air inlet 12 is the air inlet of the housing 10. Figure 3 、 Figure 4 、 Figure 6 and Figure 7 The air outlet 13 in the figure is the air outlet of the shell 10.

[0046] Specifically, the internal space of the housing 10 is a sealed space to ensure a sound-absorbing effect.

[0047] In this embodiment, the lengths of multiple first openings 211 along the first direction are equal, and the lengths of multiple first support segments 212 along the first direction are unequal; the lengths of multiple second openings 221 along the first direction are unequal, and the lengths of multiple second support segments 222 along the first direction are equal.

[0048] Specifically, from the first end to the second end of the housing 10 , the lengths of the plurality of first support segments 212 along the first direction gradually decrease or increase, and the lengths of the plurality of second openings 221 along the first direction gradually decrease or increase.

[0049] In this embodiment, the muffler includes a support frame 20 disposed in the housing 10 . The support frame 20 includes a first support portion 21 and a second support portion 22 . The support frame 20 encloses a first space 41 , a second space 42 and a third space 43 .

[0050] Specifically, the support frame 20 is made of plastic.

[0051] In this embodiment, the support frame 20 includes four support parts, which are a third support part 23, a first support part 21, a second support part 22 and a fourth support part 24 which are arranged in sequence along a direction perpendicular to the first direction; a first space 41 is formed between the third support part 23 and the first support part 21; a second space 42 is formed between the first support part 21 and the second support part 22; and a third space 43 is formed between the second support part 22 and the fourth support part 24.

[0052] Specifically, the first support portion 21 , the second support portion 22 , the third support portion 23 and the fourth support portion 24 are all plate-shaped structures.

[0053] Optionally, the distribution direction of the third support portion 23 , the first support portion 21 , the second support portion 22 and the fourth support portion 24 is parallel to the horizontal plane.

[0054] In this embodiment, the second direction is perpendicular to the first direction, and the second direction is perpendicular to the distribution direction of the first support portion 21 and the second support portion 22; along the second direction, each support portion has two oppositely arranged ends, which are respectively the third end and the fourth end; the support frame 20 also includes a connecting portion 25; the third end of each support portion is connected to the connecting portion 25, or the fourth end of each support portion is connected to the connecting portion 25.

[0055] Specifically, the third support portion 23 , the first support portion 21 and the connecting portion 25 together form a first space 41 ; the first support portion 21 , the second support portion 22 and the connecting portion 25 together form a second space 42 ; the second support portion 22 , the fourth support portion 24 and the connecting portion 25 together form a third space 43 .

[0056] Optionally, the connecting portion 25 is a plate-shaped structure.

[0057] Optionally, the second direction is parallel to the vertical direction.

[0058] Optionally, the third support portion 23 , the first support portion 21 , the second support portion 22 and the fourth support portion 24 are all disposed above the connecting portion 25 .

[0059] Optionally, along the first direction, both ends of the connecting portion 25 abut against the housing 10 .

[0060] Optionally, along the first direction, the third support portion 23 has a first end and a second end that are oppositely arranged, and the fourth support portion 24 has a first end and a second end that are oppositely arranged; the first end and the second end of the third support portion 23 are both in contact with the shell 10, and the first end and the second end of the fourth support portion 24 are both in contact with the shell 10.

[0061] Optionally, along the first direction, both ends of the sound absorbing member 30 in the first space 41 abut against the housing 10 , and both ends of the sound absorbing member 30 in the third space 43 abut against the housing 10 .

[0062] Optionally, along the first direction, the first support portion 21 has a first end and a second end that are oppositely disposed, and both the first end and the second end of the first support portion 21 abut against the housing 10 .

[0063] In this embodiment, the muffler further includes an embedded component, at least partially made of a flexible material. An embedded component is disposed between the third support portion 23 and the housing 10; and / or between the fourth support portion 24 and the housing 10; and / or between the connecting portion 25 and the housing 10. The embedded component ensures relative stability between the support frame 20 and the housing 10. Furthermore, when the support frame 20 vibrates, the vibration is converted into heat energy through friction between the support frame 20 and the embedded component.

[0064] Specifically, the embedded component is made of rubber.

[0065] Specifically, the embedded component is a strip-shaped structure; the embedded component between the third support portion 23 and the shell 10 is the first embedded component 61, and the first embedded component 61 extends along the second direction; the embedded component between the fourth support portion 24 and the shell 10 is the second embedded component 62, and the second embedded component 62 extends along the second direction; the embedded component between the connecting portion 25 and the shell 10 is the third embedded component 63, and the extension direction of the third embedded component 63 is the same as or parallel to the distribution direction of the third support portion 23, the first support portion 21, the second support portion 22 and the fourth support portion 24.

[0066] Optionally, a first groove 141 is provided on the housing 10 ; along the distribution direction of the third support portion 23 , the first support portion 21 , the second support portion 22 and the fourth support portion 24 , at least a portion of the first embedded component 61 is disposed in the first groove 141 .

[0067] Optionally, a second groove 142 is provided on the housing 10 ; along the distribution direction of the third support portion 23 , the first support portion 21 , the second support portion 22 and the fourth support portion 24 , at least a portion of the second embedded component 62 is disposed in the second groove 142 .

[0068] Optionally, a third groove 143 is provided on the housing 10 ; along the second direction, at least a portion of the third embedded component 63 is disposed in the third groove 143 .

[0069] Optionally, there are multiple first embedding components 61, and the multiple first embedding components 61 are spaced apart along the first direction. Furthermore, there are multiple first grooves 141; the multiple first embedding components 61 are arranged in a one-to-one correspondence with the multiple first grooves 141, so that in the distribution direction of the third support portion 23, the first support portion 21, the second support portion 22, and the fourth support portion 24, at least a portion of each first embedding component 61 is disposed within the corresponding first groove 141.

[0070] Optionally, there are multiple second embedded components 62, and the multiple second embedded components 62 are spaced apart along the first direction. Furthermore, there are multiple second grooves 142; the multiple second embedded components 62 are arranged in a one-to-one correspondence with the multiple second grooves 142, so that in the distribution direction of the third support portion 23, the first support portion 21, the second support portion 22, and the fourth support portion 24, at least a portion of each second embedded component 62 is disposed within the corresponding second groove 142.

[0071] Optionally, there are multiple third embedded components 63, and the multiple third embedded components 63 are spaced apart along the first direction. Further, there are multiple third grooves 143, and the multiple third embedded components 63 are arranged in a one-to-one correspondence with the multiple third grooves 143, so that in the second direction, at least a portion of each third embedded component 63 is disposed in the corresponding third groove 143.

[0072] In this embodiment, the housing 10 is a rectangular structure; the first direction is the length direction of the housing 10 .

[0073] In this embodiment, the housing 10 includes a housing body 11 and a cover 15. The housing body 11 has an installation opening, and the cover 15 is installed in an openable and closable manner at the installation opening. The air inlet and air outlet are both provided on the housing body 11, and the first groove 141, the second groove 142, and the third groove 143 are all provided on the housing body 11.

[0074] During the specific implementation process, the cover 15 can be opened to install the support frame 20 into the shell body 11.

[0075] Specifically, the mounting opening is located at the top or side of the housing body 11, so that the cover 15 can be a top cover or a side cover. Preferably, the cover is a top cover, so that after the support frame 20 is completely installed in the housing body 11, the sound absorbing member 30 can be installed; after the sound absorbing member 30 is installed, the cover 15 can be replaced.

[0076] Specifically, when the housing 10 is a rectangular structure, the cover 15 is a side surface of the rectangular structure.

[0077] Specifically, the shell body 11 is made of plastic material; the cover body 15 is also made of plastic material.

[0078] In this embodiment, a sealing member 151 is provided on the cover body 15, so that when the cover body 15 is covered on the shell body 11, the sealing member 151 is located at the installation opening, and the sealing member 151 contacts the inner peripheral wall of the installation opening of the shell body 11 to ensure the sealing of the installation opening, thereby ensuring the sound insulation effect.

[0079] Specifically, the sealing member 151 is a strip-shaped structure, and the sealing member 151 is extended along the circumference of the installation opening and connected end to end.

[0080] Optionally, the sealing member 151 is made of rubber.

[0081] In this embodiment, the muffler further includes an air intake pipe 51 , one end of which is connected to the air inlet, and the other end of which is used for introducing air flow.

[0082] Optionally, the air inlet pipe 51 and the shell body 11 are an integrally formed structure.

[0083] In this embodiment, the muffler further includes an air outlet pipe 52 , one end of which is connected to the air outlet, and the other end of which is used for allowing the gas in the air outlet pipe 52 to flow out.

[0084] Optionally, the air outlet pipe 52 and the shell body 11 are an integrally formed structure.

[0085] In this embodiment, the first opening 211 is a strip-shaped hole extending along the second direction; and / or the second opening 221 is a strip-shaped hole extending along the second direction.

[0086] Optionally, the first opening 211 is a rectangular hole; the second opening 221 is a rectangular hole.

[0087] In this embodiment, the sound absorbing member 30 is a porous sound absorbing material; alternatively, the sound absorbing member 30 is a porous foam sound absorbing material.

[0088] Specifically, the sound absorbing member 30 within the first space 41 is the first sound absorbing member 31, and the sound absorbing member 30 within the third space 43 is the second sound absorbing member 32. Both the first sound absorbing member 31 and the second sound absorbing member 32 are made of porous sound absorbing materials, but the porosity of the first sound absorbing member 31 and the porosity of the second sound absorbing member 32 are different. In other words, the first sound absorbing member 31 and the second sound absorbing member 32 are made of materials with different porosities. Porosity affects the frequency range of noise absorbed by the sound absorbing material, and changes in the incident angle of noise also affect the surface impedance and sound absorption coefficient of the sound absorbing material.

[0089] The present invention also provides an oxygen concentrator, which includes a compressor and the above-mentioned muffler; a muffler is provided on the air inlet air path of the compressor, and / or a muffler is provided on the air outlet air path of the compressor, so as to solve the noise problem of the air path when the oxygen concentrator compressor is working, and the muffler of the present application has an obvious noise reduction effect, which helps to reduce the noise level of the whole machine.

[0090] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0091] In the muffler provided by the present invention, the muffler includes a shell 10, a first support part 21 and a second support part 22; the shell 10 has a first end and a second end arranged opposite to each other along a first direction; the first end of the shell 10 is provided with an air inlet, and the second end of the shell 10 is provided with an air outlet; the first support part 21 and the second support part 22 are both arranged in the shell 10, and the first support part 21 and the second support part 22 are distributed in a direction perpendicular to the first direction to form three separate spaces, which are a first space 41, a second space 42 and a third space 43 arranged in sequence; sound absorbing parts 30 are both provided in the first space 41 and the third space 43.

[0092] The air inlet and the air outlet are both communicated with the second space 42 , so that the second space 42 forms a gas channel for air flow to pass through.

[0093] The first support portion 21 has a plurality of first openings 211 distributed along a first direction, such that the first support portion 21 includes a plurality of first support segments 212 distributed along the first direction; a first opening 211 is formed between two adjacent first support segments 212. The second support portion 22 has a plurality of second openings 221 distributed along the first direction, such that the second support portion 22 includes a plurality of second support segments 222 distributed along the first direction; a second opening 221 is formed between two adjacent second support segments 222.

[0094] The plurality of first openings 211 and the plurality of second openings 221 are staggeredly distributed along the first direction; that is, the plurality of first openings 211 and the plurality of second support segments 222 are arranged in a one-to-one correspondence, and the plurality of second openings 221 and the plurality of first support segments 212 are arranged in a one-to-one correspondence, so that each first opening 211 and the corresponding second support segment 222 are arranged relative to each other, and each second opening 221 and the corresponding first support segment 212 are arranged relative to each other.

[0095] The noise generated by the airflow in the second space 42 is absorbed by the sound absorbing member 30 through the first opening 211 and the second opening 221; the first support section 212 and the second support section 222 can reflect the noise. By staggering the plurality of first openings 211 and the plurality of second openings 221 along the first direction, the incident angle of the noise when it passes through the first opening 211 or the second opening 221 and is absorbed by the sound absorbing member 30 can be changed, thereby facilitating the improvement of the noise absorption effect of the sound absorbing member 30, thereby enhancing the noise reduction effect. The muffler of the present application is applied to an oxygen concentrator to improve the muffler effect of the muffler in the air inlet and outlet of the compressor of the oxygen concentrator.

[0096] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0097] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0098] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A muffler, characterized in that: include: A shell (10), the shell (10) having a first end and a second end arranged opposite to each other along a first direction; the first end and the second end of the shell (10) are respectively provided with an air inlet and an air outlet; A first support portion (21) and a second support portion (22), wherein the first support portion (21) and the second support portion (22) are both arranged in the housing (10) and distributed in a direction perpendicular to the first direction to form a first space (41), a second space (42), and a third space (43) arranged in sequence; a sound absorbing member (30) is provided in the first space (41) and the third space (43); the air inlet and the air outlet are both communicated with the second space (42), so that the second space (42) is used for airflow to pass through; The first support portion (21) is provided with a plurality of first openings (211) distributed along the first direction, and the second support portion (22) is provided with a plurality of second openings (221) distributed along the first direction; the plurality of first openings (211) and the plurality of second openings (221) are staggered along the first direction; The lengths of the plurality of first openings (211) along the first direction are all equal, and the lengths of the plurality of second openings (221) along the first direction are all unequal.

2. The muffler according to claim 1, characterized in that The first supporting portion (21) comprises a plurality of first supporting segments (212) distributed along the first direction, with a first opening (211) formed between two adjacent first supporting segments (212); the lengths of the plurality of first supporting segments (212) along the first direction are not equal; and / or The second support portion (22) comprises a plurality of second support segments (222) distributed along the first direction, with a second opening (221) formed between two adjacent second support segments (222); the lengths of the plurality of second support segments (222) along the first direction are all equal.

3. The muffler according to claim 2, characterized in that In a direction from the first end to the second end of the housing (10), the lengths of the plurality of first support segments (212) along the first direction gradually decrease or increase; and / or In a direction from the first end to the second end of the shell (10), the lengths of the plurality of second openings (221) along the first direction gradually decrease or increase.

4. The muffler according to claim 1, characterized in that The muffler comprises a support frame (20) arranged in the shell (10), the support frame (20) comprising four support portions, the four support portions being a third support portion (23), the first support portion (21), the second support portion (22) and a fourth support portion (24) arranged in sequence and spaced apart in a direction perpendicular to the first direction; The first space (41) is formed between the third support portion (23) and the first support portion (21); the second space (42) is formed between the first support portion (21) and the second support portion (22); and the third space (43) is formed between the second support portion (22) and the fourth support portion (24).

5. The muffler according to claim 4, characterized in that The second direction is perpendicular to the first direction and perpendicular to the distribution direction of the first support portion (21) and the second support portion (22); along the second direction, each of the support portions has a third end and a fourth end that are arranged opposite to each other; the support frame (20) further includes a connecting portion (25), and the third end or the fourth end of each of the support portions is connected to the connecting portion (25).

6. The muffler according to claim 5, characterized in that The muffler further includes an embedded component, at least a portion of which is made of a flexible material; The embedded component is provided between the third support portion (23) and the housing (10); and / or The embedded component is provided between the fourth support portion (24) and the housing (10); and / or The embedded component is provided between the connecting portion (25) and the housing (10).

7. The muffler according to claim 1, characterized in that The muffler further comprises: an air intake pipe (51), one end of the air intake pipe (51) being connected to the air inlet, and the other end of the air intake pipe (51) being used for introducing airflow; and / or An air outlet pipe (52), one end of the air outlet pipe (52) is connected to the air outlet, and the other end of the air outlet pipe (52) is used for allowing the gas in the air outlet pipe (52) to flow out.

8. The muffler according to claim 1, wherein: The second direction is perpendicular to the first direction and perpendicular to the distribution direction of the first support portion (21) and the second support portion (22); The first opening (211) is a strip-shaped hole extending along the second direction; and / or The second opening (221) is a strip-shaped hole extending along the second direction.

9. The muffler according to claim 1, wherein: The sound absorbing member (30) in the first space (41) is a first sound absorbing member (31), and the sound absorbing member (30) in the third space (43) is a second sound absorbing member (32); the first sound absorbing member (31) and the second sound absorbing member (32) are both made of porous sound absorbing materials, and the porosity of the first sound absorbing member (31) and the porosity of the second sound absorbing member (32) are different.

10. An oxygen concentrator, comprising a compressor, characterized in that: The oxygen concentrator further comprises a muffler according to any one of claims 1 to 9; The muffler is provided on the air inlet air path of the compressor; and / or The muffler is arranged on the air path of the air outlet of the compressor.

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