CN221040521U

CN221040521U - Muffler and oxygenerator

Info

Publication number: CN221040521U
Application number: CN202322496668.7U
Authority: CN
Inventors: 刘扬
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2023-09-13
Filing date: 2023-09-13
Publication date: 2024-05-28
Anticipated expiration: 2033-09-13

Abstract

The utility model provides a muffler and an oxygenerator, wherein the muffler comprises a shell, a first supporting part and a second supporting part; the first end and the second end of the shell are respectively provided with an air inlet and an air outlet; the first supporting part and the second supporting part are arranged in the shell and distributed along the direction perpendicular to the first direction so as to form a first space, a second space and a third space which are sequentially arranged; the first space and the third space are internally provided with sound absorbing pieces; the air inlet and the air outlet are communicated with the second space; the first support part is provided with a plurality of first openings distributed along a 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. The silencer is applied to the oxygenerator to improve the silencing effect of the silencer in the gas path of the inlet and outlet of the compressor of the oxygenerator.

Description

Muffler and oxygenerator

Technical Field

The utility model relates to the technical field of oxygenerators, in particular to a muffler and an oxygenerator.

Background

The oxygenerator is a machine for preparing oxygen, and mainly uses an air compressor to adsorb nitrogen in air through a molecular sieve when the air compressor is pressurized, so as to form high-concentration oxygen.

The compressor of the oxygenerator can generate larger noise when working, wherein, a muffler is arranged in the gas path of the gas inlet and outlet of the compressor,

Disclosure of utility model

The utility model mainly aims to provide a muffler and an oxygenerator, so as to improve the silencing effect of the muffler in an air passage of an air inlet and an air outlet of a compressor of the oxygenerator.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a muffler including: a housing having oppositely disposed first and second ends 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; the first supporting part and the second supporting part are arranged in the shell and distributed along the direction perpendicular to the first direction so as to form a first space, a second space and a third space which are sequentially arranged; the first space and the third space are internally provided with sound absorbing pieces; the air inlet and the air outlet are communicated with the second space, so that the second space is used for air flow to pass through; the first support part is provided with a plurality of first openings distributed along a 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.

Further, the first supporting part comprises a plurality of first supporting sections distributed along the first direction, and a first opening is formed between two adjacent first supporting sections; the lengths of the first openings along the first direction are equal, and the lengths of the first support sections along the first direction are unequal; and/or the second supporting part comprises a plurality of second supporting sections distributed along the first direction, and a second opening is formed between two adjacent second supporting sections; the lengths of the plurality of second openings along the first direction are all unequal, and the lengths of the plurality of second support sections along the first direction are all equal.

Further, the lengths of the plurality of first support sections along the first direction gradually decrease or increase from the first end to the second end of the housing; and/or, from the first end to the second end of the housing, the plurality of second openings gradually decrease or increase in length along the first direction.

Further, the muffler comprises a support frame arranged in the shell, the support frame comprises 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 which are sequentially arranged at intervals along the direction perpendicular to the first direction; a first space is formed between the third supporting part and the first supporting part; a second space is formed between the first supporting part and the second supporting part; a third space is formed between the second support portion and the fourth support portion.

Further, 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; each supporting part is provided with a third end and a fourth end which are oppositely arranged along the second direction; the support frame also comprises a connecting part, and the third end or the fourth end of each support part is connected with the connecting part.

Further, the muffler also comprises an embedded part, and at least part of the embedded part is made of flexible materials; an embedded part is arranged between the third supporting part and the shell; and/or an embedded part is arranged between the fourth supporting part and the shell; and/or an embedded component is arranged between the connecting part and the shell.

Further, the muffler further includes: one end of the air inlet pipe is in butt joint communication with the air inlet, and the other end of the air inlet pipe is used for introducing air flow; and/or, one end of the air outlet pipe is in butt joint communication with the air outlet, and the other end of the air outlet pipe is used for allowing air in the air outlet pipe to flow out.

Further, 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-shaped hole extending along the second direction; and/or the second opening is a strip-shaped hole extending along the second direction.

Further, the sound absorbing piece in the first space is a first sound absorbing piece, and the sound absorbing piece in the third space is a second sound absorbing piece; the first sound absorbing piece and the second sound absorbing piece are made of porous sound absorbing materials, and the porosity of the first sound absorbing piece is different from the porosity of the second sound absorbing piece.

According to another aspect of the present utility model, there is provided an oxygenerator comprising a compressor and the muffler described above; a muffler is arranged on an air inlet air path of the compressor; and/or a muffler is arranged on the gas outlet gas path of the compressor.

By applying the technical scheme of the utility model, the muffler comprises a shell, a first supporting part and a second supporting part; the shell is provided with a first end and a second end which are oppositely arranged 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 supporting part and the second supporting part are arranged in the shell, and the first supporting part and the second supporting part are distributed along the direction vertical to the first direction so as to form three independent spaces, wherein the three independent spaces are respectively a first space, a second space and a third space which are sequentially arranged; and sound absorbing pieces are arranged in the first space and the third space.

The air inlet and the air outlet are communicated with the second space, so that the second space forms an air channel for air flow to pass through.

The first support part is provided with a plurality of first openings distributed along a first direction, so that the first support part comprises a plurality of first support sections distributed along the first direction; a first opening is formed between two adjacent first support sections. The second support part is provided with a plurality of second openings distributed along the first direction, so that the second support part comprises a plurality of second support sections distributed along the first direction; a second opening is formed between two adjacent second support sections.

The first openings and the second openings are staggered along the first direction; that is, the plurality of first openings and the plurality of second support sections are arranged in one-to-one correspondence, and the plurality of second openings and the plurality of first support sections are arranged in one-to-one correspondence, so that each first opening and the corresponding second support section are arranged opposite to each other, and each second opening and the corresponding first support section are arranged opposite to each other.

Noise generated by the airflow flowing 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 play a role in reflecting noise, and through enabling the first openings and the second openings to be distributed in a staggered mode along the first direction, the incidence angle of the noise when the noise is absorbed by the sound absorbing piece through the first openings or the second openings can be changed, and further the noise absorbing effect of the sound absorbing piece is improved, and therefore the noise eliminating effect is improved. The silencer is applied to the oxygenerator to improve the silencing effect of the silencer in the gas path of the inlet and outlet of the compressor of the oxygenerator.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

Fig. 1 shows a schematic structural view of a muffler according to the present utility model; wherein the support frame in the housing is seen through;

fig. 2 shows a schematic structural view of a support frame of a muffler according to the present utility model;

Fig. 3 shows a transverse cross-section of a muffler according to the utility model;

fig. 4 shows a schematic structural view of a housing of the muffler of fig. 3;

fig. 5 shows a schematic structural view of a support frame of the muffler of fig. 3; wherein, the first space and the third space are provided with sound absorbing pieces;

fig. 6 shows a first longitudinal section through a muffler according to the utility model;

Fig. 7 shows a schematic structural view of a housing of the muffler of fig. 6;

fig. 8 shows a second longitudinal section through a muffler according to the utility model;

fig. 9 shows a schematic structural view of a housing of the muffler of fig. 8;

FIG. 10 shows a schematic structural view of a support frame of the muffler of FIG. 8; wherein, the first space and the third space are provided with sound absorbing pieces;

fig. 11 shows a top view of the support frame of the muffler of fig. 2.

Wherein the above figures include the following reference numerals:

10. A housing; 11. a housing body; 12. an air inlet; 13. an air outlet; 141. a first groove; 142. a second groove; 143. a third groove; 15. a cover body; 151. a seal;

20. A support frame; 21. a first support portion; 211. a first opening; 212. a first support section; 22. a second supporting part; 221. a second opening; 222. a second support section; 23. a third supporting part; 24. a fourth supporting part; 25. a connection part;

30. A sound absorbing member; 31. a first sound absorbing member; 32. a second sound absorbing member; 41. a first space; 42. a second space; 43. a third space; 51. an air inlet pipe; 52. an air outlet pipe; 61. a first embedded part; 62. a second embedded part; 63. and a third embedded component.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The present utility model provides a muffler for an air path, referring to fig. 1 to 11, the muffler includes a housing 10, a first support 21 and a second support 22; the housing 10 has oppositely disposed first and second ends in 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 supporting part 21 and the second supporting part 22 are both arranged in the housing 10, and the first supporting part 21 and the second supporting part 22 are distributed along 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 sequentially arranged; the sound absorbing member 30 is disposed in each of the first space 41 and the third space 43.

The gas inlet and the gas outlet are both in communication with the second space 42 such that the second space 42 forms a gas channel through which a gas flow passes.

The first supporting portion 21 is provided with a plurality of first openings 211 distributed along a first direction, so that the first supporting portion 21 comprises a plurality of first supporting sections 212 distributed along the first direction; a first opening 211 is formed between two adjacent first support sections 212. The second supporting portion 22 is provided with a plurality of second openings 221 distributed along the first direction, so that the second supporting portion 22 includes a plurality of second supporting sections 222 distributed along the first direction; a second opening 221 is formed between two adjacent second support sections 222.

The plurality of first openings 211 and the plurality of second openings 221 are staggered along the first direction; that is, the plurality of first openings 211 and the plurality of second support sections 222 are disposed in one-to-one correspondence, and the plurality of second openings 221 and the plurality of first support sections 212 are disposed in one-to-one correspondence, such that each first opening 211 and the corresponding second support section 222 are disposed opposite to each other, and such that each second opening 221 and the corresponding first support section 212 are disposed opposite to each other.

Noise generated by the flow of the air flow in the second space 42 is absorbed by the sound absorbing member 30 through the first and second openings 211 and 221; the first support section 212 and the second support section 222 may play a role in reflecting noise, and by staggering the plurality of first openings 211 and the plurality of second openings 221 along the first direction, an incident angle of the noise when the noise is absorbed by the sound absorbing member 30 through the first openings 211 or the second openings 221 may be changed, thereby being beneficial to improving an effect of the sound absorbing member 30 for absorbing the noise, thereby improving a noise elimination effect. The silencer is applied to the oxygenerator to improve the silencing effect of the silencer in the gas path of the inlet and outlet of the compressor of the oxygenerator.

Optionally, the first direction is parallel to the horizontal plane; the first and second support parts 21 and 22 are arranged in a direction parallel to the horizontal plane, that is, the first, second and third spaces 41, 42 and 43 are arranged in a direction parallel to the horizontal plane.

The air inlet 12 in fig. 3, 4, 6 and 7 is an air inlet of the housing 10, and the air outlet 13 in fig. 3, 4, 6 and 7 is an air outlet of the housing 10.

Specifically, the inner space of the housing 10 is a sealed space to secure the sound deadening effect.

In the present embodiment, the lengths of the plurality of first openings 211 along the first direction are all equal, and the lengths of the plurality of first support sections 212 along the first direction are all unequal; the lengths of the plurality of second openings 221 along the first direction are all unequal, and the lengths of the plurality of second support sections 222 along the first direction are all equal.

Specifically, from the first end to the second end of the housing 10, the lengths of the plurality of first support sections 212 in the first direction gradually decrease or increase, and the lengths of the plurality of second openings 221 in the first direction gradually decrease or increase.

In the present embodiment, the muffler includes a support frame 20 provided in the housing 10, the support frame 20 including 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.

Specifically, the support 20 is made of plastic.

In the present embodiment, the support frame 20 includes four support portions, which are a third support portion 23, a first support portion 21, a second support portion 22, and a fourth support portion 24, respectively, that are sequentially disposed at intervals in a direction perpendicular to the first direction; a first space 41 is formed between the third support 23 and the first support 21; a second space 42 is formed between the first support portion 21 and the second support portion 22; a third space 43 is formed between the second support portion 22 and the fourth support portion 24.

Specifically, the first support portion 21, the second support portion 22, the third support portion 23, and the fourth support portion 24 are each plate-like structures.

Alternatively, the third support 23, the first support 21, the second support 22, and the fourth support 24 are arranged in a direction parallel to the horizontal plane.

In the present 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 supporting part is provided with two opposite ends, namely a third end and a fourth end; the support frame 20 further includes a connection portion 25; the third end of each supporting part is connected with the connecting part 25, or the fourth end of each supporting part is connected with the connecting part 25.

Specifically, the third supporting portion 23, the first supporting portion 21, and the connecting portion 25 together enclose a first space 41; the first supporting portion 21, the second supporting portion 22 and the connecting portion 25 together enclose a second space 42; the second support portion 22, the fourth support portion 24, and the connecting portion 25 together define a third space 43.

Alternatively, the connection portion 25 is a plate-like structure.

Optionally, the second direction is parallel to the vertical direction.

Alternatively, the third support 23, the first support 21, the second support 22, and the fourth support 24 are all disposed above the connection 25.

Alternatively, in the first direction, both ends of the connecting portion 25 abut against the housing 10.

Alternatively, in the first direction, the third support 23 has a first end and a second end disposed opposite to each other, and the fourth support 24 has a first end and a second end disposed opposite to each other; the first end and the second end of the third supporting portion 23 are in contact with the housing 10, and the first end and the second end of the fourth supporting portion 24 are in contact with the housing 10.

Alternatively, in the first direction, both ends of the sound absorbing member 30 in the first space 41 are abutted with the housing 10, and both ends of the sound absorbing member 30 in the third space 43 are abutted with the housing 10.

Alternatively, the first support portion 21 has a first end and a second end disposed opposite to each other in the first direction, and both the first end and the second end of the first support portion 21 abut against the housing 10.

In this embodiment, the muffler further includes an embedded component, at least a portion of the embedded component being made of a flexible material. An embedded component is arranged between the third supporting part 23 and the shell 10; and/or an embedded component is arranged between the fourth supporting part 24 and the shell 10; and/or an embedded component is provided between the connecting portion 25 and the housing 10. By providing embedded parts, the relative stability between the support frame 20 and the housing 10 is ensured. Also, when the support frame 20 vibrates, the vibration may be converted into heat energy dissipation through friction between the support frame 20 and the embedded parts.

Specifically, the embedded component is made of rubber.

Specifically, the embedded component is in a strip-shaped structure; the fitting member between the third support portion 23 and the housing 10 is a first fitting member 61, the first fitting member 61 being provided to extend in the second direction; the embedded component between the fourth supporting part 24 and the shell 10 is a second embedded component 62, and the second embedded component 62 is arranged in an extending way along the second direction; the fitting member between the connecting portion 25 and the housing 10 is a third fitting member 63, and the extending direction of the third fitting member 63 is the same as or parallel to the distribution direction of the third supporting portion 23, the first supporting portion 21, the second supporting portion 22, and the fourth supporting portion 24.

Optionally, the housing 10 is provided with a first groove 141; at least part of the first embedded part 61 is disposed in the first groove 141 along the distribution direction of the third supporting part 23, the first supporting part 21, the second supporting part 22 and the fourth supporting part 24.

Optionally, the housing 10 is provided with a second groove 142; at least part of the second embedded part 62 is disposed in the second groove 142 along the distribution direction of the third supporting part 23, the first supporting part 21, the second supporting part 22 and the fourth supporting part 24.

Optionally, a third groove 143 is provided on the housing 10; in the second direction, at least part of the third embedded part 63 is disposed in the third groove 143.

Alternatively, the first embedding parts 61 are plural, and the plural first embedding parts 61 are spaced apart in the first direction. Further, the first grooves 141 are plural; the plurality of first fitting parts 61 are disposed in one-to-one correspondence with the plurality of first grooves 141 such that at least a portion of each first fitting part 61 is disposed within the corresponding first groove 141 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.

Alternatively, the second embedded parts 62 are plural, and the plural second embedded parts 62 are spaced apart along the first direction. Further, the second grooves 142 are plural; the plurality of second embedded parts 62 are disposed in one-to-one correspondence with the plurality of second grooves 142 such that at least a portion of each second embedded part 62 is disposed within the corresponding second groove 142 in the distribution direction of the third supporting portion 23, the first supporting portion 21, the second supporting portion 22, and the fourth supporting portion 24.

Alternatively, the third embedded parts 63 are plural, and the plural third embedded parts 63 are distributed at intervals along the first direction. Further, the plurality of third grooves 143 are provided, and the plurality of third embedded parts 63 are provided in one-to-one correspondence with the plurality of third grooves 143, so that at least part of each third embedded part 63 is provided in the corresponding third groove 143 in the second direction.

In the present embodiment, the housing 10 has a rectangular structure; the first direction is the longitudinal direction of the housing 10.

In the present embodiment, the housing 10 includes a housing body 11 and a cover 15, the housing body 11 having a mounting opening, the cover 15 being openably and closably mounted at the mounting opening. The air inlet and the air outlet are all 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.

In practice, the cover 15 may be opened to mount the support frame 20 into the housing body 11.

Specifically, the mounting opening is located at the top or side of the case body 11 so that the cover body 15 is a top cover or a side cover. Preferably, the cover is a top cover, so that after the support frame 20 is integrally installed in the housing body 11, the sound absorbing member 30 is further provided; after the sound absorbing member 30 is set, the cover 15 is covered.

Specifically, when the case 10 has a rectangular structure, the cover 15 has one side of the rectangular structure.

Specifically, the housing body 11 is made of plastic; the cover 15 is made of plastic.

In this embodiment, the cover 15 is provided with the sealing member 151, so that when the cover 15 is covered on the housing body 11, the sealing member 151 is located at the mounting opening, and the sealing member 151 contacts with the inner peripheral wall of the mounting opening of the housing body 11, so as to ensure the tightness of the mounting opening, and further ensure the sound insulation effect.

Specifically, the sealing member 151 has a strip-shaped structure, and the sealing member 151 extends along the circumferential direction of the mounting opening and is connected end to end.

Optionally, the sealing member 151 is made of rubber.

In this embodiment, the muffler further includes an air intake pipe 51, one end of the air intake pipe 51 is in butt-joint communication with the air intake, and the other end of the air intake pipe 51 is used for introducing air flow.

Alternatively, the air inlet duct 51 and the housing body 11 are an integrally formed structure.

In this embodiment, the muffler further includes an air outlet pipe 52, one end of the air outlet pipe 52 is in butt-joint communication with the air outlet, and the other end of the air outlet pipe 52 is used for supplying the air in the air outlet pipe 52 to flow out.

Alternatively, the outlet duct 52 and the housing body 11 are of an integrally formed construction.

In the present embodiment, the first opening 211 is a bar-shaped hole extending in the second direction; and/or, the second opening 221 is a bar-shaped hole extending in the second direction.

Alternatively, the first opening 211 is a rectangular hole; the second opening 221 is a rectangular hole.

In the present 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.

Specifically, the sound absorbing member 30 in the first space 41 is the first sound absorbing member 31, and the sound absorbing member 30 in the third space 43 is the second sound absorbing member 32; the first sound absorbing member 31 and the second sound absorbing member 32 are 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. That is, the first sound absorbing member 31 and the second sound absorbing member 32 are respectively made of two kinds of porosity materials, the porosity affects the frequency range in which the sound absorbing material absorbs noise, and a change in the incident angle of noise will also affect the surface resistance and the sound absorption coefficient of the sound absorbing material.

The utility model also provides an oxygenerator, which comprises a compressor and the silencer; the silencer is arranged on the air inlet air path of the compressor and/or the silencer is arranged on the air outlet air path of the compressor, so that the noise problem of the air path of the oxygenerator compressor during working is solved, the silencing effect of the silencer is obvious, and the noise level of the whole machine is reduced.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

In the muffler provided by the present utility model, the muffler includes a housing 10, a first support 21, and a second support 22; the housing 10 has oppositely disposed first and second ends in 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 supporting part 21 and the second supporting part 22 are both arranged in the housing 10, and the first supporting part 21 and the second supporting part 22 are distributed along 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 sequentially arranged; the sound absorbing member 30 is disposed in each of the first space 41 and the third space 43.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be capable of being practiced otherwise than as specifically illustrated and described. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A muffler, characterized by comprising:

A housing (10), the housing (10) having oppositely disposed first and second ends 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 supporting part (21) and a second supporting part (22), wherein the first supporting part (21) and the second supporting part (22) are arranged in the shell (10) and distributed along the direction perpendicular to the first direction so as to form a first space (41), a second space (42) and a third space (43) which are sequentially arranged; a sound absorbing member (30) is arranged in each of the first space (41) and the third space (43); the air inlet and the air outlet are both in communication with the second space (42) such that the second space (42) is for the passage of an air flow;

Wherein the first supporting part (21) is provided with a plurality of first openings (211) distributed along the first direction, and the second supporting part (22) is provided with a plurality of second openings (221) distributed along the first direction; a plurality of the first openings (211) and a plurality of the second openings (221) are staggered along the first direction.

2. The muffler of claim 1, wherein,

The first supporting part (21) comprises a plurality of first supporting sections (212) distributed along the first direction, and one first opening (211) is formed between two adjacent first supporting sections (212); -the lengths of the plurality of first openings (211) along the first direction are all equal, and the lengths of the plurality of first support sections (212) along the first direction are all unequal; and/or

The second supporting part (22) comprises a plurality of second supporting sections (222) distributed along the first direction, and a second opening (221) is formed between two adjacent second supporting sections (222); the lengths of the second openings (221) along the first direction are not equal, and the lengths of the second support sections (222) along the first direction are equal.

3. The muffler of claim 2, wherein,

-A direction from a first end to a second end of the housing (10), -a plurality of first support sections (212) decreasing or increasing in length along the first direction; and/or

The plurality of second openings (221) gradually decrease or increase in length along the first direction from the first end to the second end of the housing (10).

4. The muffler according to claim 1, characterized in that the muffler comprises a support frame (20) provided in the housing (10), the support frame (20) comprising four support portions, which are respectively a third support portion (23), the first support portion (21), the second support portion (22) and a fourth support portion (24) provided at intervals in order in a direction perpendicular to the first direction;

-said first space (41) is formed between said third support (23) and said first support (21); -said second space (42) is formed between said first support (21) and said second support (22); the third space (43) is formed between the second support portion (22) and the fourth support portion (24).

5. The muffler as claimed in claim 4, characterized in that a second direction is perpendicular to the first direction and perpendicular to the direction of distribution of the first support portion (21) and the second support portion (22); each supporting part is provided with a third end and a fourth end which are oppositely arranged along the second direction; the support frame (20) further comprises connecting portions (25), and the third end or the fourth end of each support portion is connected with the connecting portion (25).

6. The muffler of claim 5, further comprising an embedded component, at least a portion of the embedded component being flexible;

The embedded component is arranged between the third supporting part (23) and the shell (10); and/or

The embedded component is arranged between the fourth supporting part (24) and the shell (10); and/or

The embedded component is arranged between the connecting part (25) and the shell (10).

7. The muffler of claim 1, further comprising:

The air inlet pipe (51) is in butt joint communication with the air inlet at one end of the air inlet pipe (51), and the other end of the air inlet pipe (51) is used for introducing air flow; and/or

The air outlet pipe (52), one end of air outlet pipe (52) with the gas outlet butt joint intercommunication, the other end of air outlet pipe (52) is used for supplying the gaseous outflow in air outlet pipe (52).

8. The muffler as claimed in claim 1, characterized in that a second direction is perpendicular to the first direction and perpendicular to the direction of distribution 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 as claimed in 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 piece (31) and the second sound absorbing piece (32) are made of porous sound absorbing materials, and the porosity of the first sound absorbing piece (31) is different from the porosity of the second sound absorbing piece (32).

10. An oxygenerator comprising a compressor, characterized in that it further comprises a muffler according to any one of claims 1 to 9;

the muffler is arranged on an air inlet air path of the compressor; and/or

The muffler is arranged on the air outlet air path of the compressor.