CN219639004U - Muffler and compressor - Google Patents

Abstract

The utility model relates to a silencer and a compressor, wherein the silencer comprises a shell, a shell and a compressor, wherein the shell is provided with an air inlet, an air outlet and an air flow channel communicated with the air inlet and the air outlet; the silencing piece is arranged in the airflow channel; wherein the airflow channel is bent and extended from the air inlet to the air outlet. Through setting up crooked extension's air current passageway to set up the amortization piece on the air current passageway, can make the route of air current passageway longer in the space of limited muffler, thereby make the air current through the air current passageway can continuously carry out the amortization through the amortization piece, the muffler is obvious to the weakening effect of air current pulsation.

Description

Muffler and compressor

Technical Field

The utility model relates to the technical field of silencers, in particular to a silencer and a compressor.

Background

The air flow pulsation of the compressor exhaust cavity is a main source of noise generated when the compressor works, and the periodic communication of air suction and air exhaust of the compressor exacerbates the air flow pulsation, so that the noise of vibration of the compressor air suction cavity and the air exhaust cavity is increased. The current method for reducing the air flow pulsation noise of the compressor mainly comprises the steps of reducing the air flow pulsation, adding a silencer and improving the valve plate structure, wherein the method for adding the silencer is more applied.

However, due to the limitation of the structure and the installation environment of the compressor, the requirements of the compressor on the internal space are strict, so that the available space in the compressor is limited, the installation space reserved for the silencer in the cavity is small, the space in the silencer is too small, and the weakening effect of the silencer on airflow pulsation is not obvious.

Disclosure of Invention

In view of this, it is necessary to provide a muffler and a compressor capable of making the effect of reducing the pulsation of the air flow by the muffler obvious when the space in the muffler is too small, in order to solve the problem that the effect of reducing the pulsation of the air flow by the muffler is not obvious because the space in the conventional muffler is too small.

In a first aspect, the present utility model provides a muffler comprising:

the shell is provided with an air inlet, an air outlet and an air flow channel which is communicated with the air inlet and the air outlet; and

the silencing piece is arranged in the airflow channel;

wherein the airflow channel is bent and extended from the air inlet to the air outlet.

In one embodiment, the airflow channel comprises a plurality of sub-airflow channels which are sequentially communicated along the extending direction of the sub-airflow channels, each sub-airflow channel bends and extends from the air inlet to the air outlet, and the bending directions of two adjacent sub-airflow channels are opposite.

In one embodiment, the airflow channel extends in a zigzag manner from the air inlet to the air outlet.

In one embodiment, the inner wall of the housing has a plurality of flow guiding portions protruding inward or recessed outward, and all the flow guiding portions are arranged at intervals from the air inlet to the air outlet, so as to form an air flow channel in the housing.

In one embodiment, the muffler includes a first flow guiding group and a second flow guiding group, each of the first flow guiding group and the second flow guiding group has at least one flow guiding portion, and the first flow guiding group is disposed opposite to the second flow guiding group.

In one embodiment, the side wall of the partial housing is recessed inwards to form a corresponding inwardly protruding flow guiding part, or the side wall of the partial housing is protruding outwards to form a corresponding inwardly recessed flow guiding part.

In one embodiment, the flow guiding part is provided with at least two flow guiding planes which are sequentially distributed from the air inlet to the air outlet, and an included angle is formed between any two adjacent flow guiding planes.

In one embodiment, the flow guide is covered with a sound absorbing structure.

In one embodiment, the muffler includes a plurality of muffling members spaced apart along the direction of extension of the airflow passage.

In one embodiment, the path of all of the sound attenuating members within the airflow path is consistent with the curved extension path of the airflow path.

In one of the embodiments, the opposite ends of the muffler member extend to be connected to the inner wall of the airflow passage in a direction intersecting the extending direction of the airflow passage.

In one embodiment, the opposite ends of the silencer are embedded in the airflow channel.

In one embodiment, the connection between the silencer and the inner wall of the air flow channel is provided with a damping structure.

In one of the embodiments, the muffler has a flow gap between the inner wall of the airflow passage and the muffler in the circumferential direction in a direction intersecting the extending direction of the airflow passage.

In one embodiment, the silencing piece is provided with a silencing hole and a silencing cavity, and the silencing hole is communicated with the airflow channel and the silencing cavity.

In one embodiment, the silencer is cylindrical, and the axial direction of the silencer intersects with the extending direction of the airflow channel.

In one embodiment, the silencing piece comprises a plurality of silencing holes and a plurality of independent silencing cavities, and at least one silencing hole is communicated with the airflow channel and a corresponding silencing cavity;

the plurality of silencing chambers are arranged in sequence in a direction intersecting with the extending direction of the airflow passage.

In one embodiment, the air inlet of the housing is provided with a silencing connector for connecting with an external structure, and the silencing connector is used for silencing the air flow at the air inlet.

In one embodiment, a check valve is provided at the exhaust port of the housing for preventing backflow of air from the exhaust port to the air flow passage.

In a second aspect, there is also provided a compressor comprising the muffler described above.

Above-mentioned muffler and compressor through setting up crooked air current passageway that extends to set up the amortization piece on air current passageway, can make air current passageway's route longer in the space of limited muffler, thereby make the air current through air current passageway can continuously carry out the amortization through the amortization piece, the reduction effect of muffler to the air current pulsation is obvious.

Drawings

FIG. 1 is a schematic view of a muffler according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the muffler of FIG. 1 from another perspective;

FIG. 3 is a schematic cross-sectional view of the muffler of FIG. 1;

fig. 4 is a schematic cross-sectional view of a muffler according to an embodiment of the present utility model.

Reference numerals:

a muffler 100;

a housing 10;

an air inlet 11, an air outlet 12, an air flow channel 13, a sub-air flow channel 131, a flow gap 132, a flow guiding portion 14, a flow guiding plane 141, a first side wall 15, a second side wall 16, a first portion 17, a second portion 18;

a muffler 20;

a sound deadening hole 21, a sound deadening chamber 22;

a shock absorbing structure 30;

a sound deadening connection member 40;

a check valve 50.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The accompanying drawings are not 1:1, and the relative dimensions of the various elements are drawn by way of example only in the drawings and are not necessarily drawn to true scale.

FIG. 1 is a schematic view of a muffler according to an embodiment of the present utility model; FIG. 2 is a schematic view of the muffler of FIG. 1 from another perspective; fig. 3 is a schematic cross-sectional structure of the muffler shown in fig. 1.

Referring to fig. 1-3, an embodiment of the present utility model provides a muffler 100, which includes a housing 10 and a muffler 20. The muffler 100 of the present utility model may be applied to a compressor, particularly a screw compressor, and the muffler 100 may be applied to other devices to which the muffler is applied, particularly, without limitation.

The housing 10 has an intake port 11, an exhaust port 12, and an airflow passage 13 that communicates the intake port 11 and the exhaust port 12. In a specific embodiment of the utility model, the inlet 11 communicates with the discharge end of the compressor.

The muffler 20 is provided in the airflow passage 13. The silencer 20 serves to silence the airflow. Specifically, the muffler 20 may be a porous muffler or a sound absorbing plate, and the sound absorbing plate may be coated with a sound absorbing coating, which is not particularly limited.

Wherein the air flow channel 13 extends in a curved manner from the air inlet 11 to the air outlet 12.

By providing the airflow passage 13 extending in a curved manner and providing the silencer 20 on the airflow passage 13, the path of the airflow passage 13 can be made longer in a limited space of the silencer 100, so that the airflow can be continuously silenced by the silencer 20 through the airflow passage 13, and the effect of reducing the pulsation of the airflow by the silencer 100 is obvious.

In particular, in the embodiment of the present utility model, the airflow channel 13 includes a plurality of sub-airflow channels 131 sequentially connected along the extending direction thereof, each sub-airflow channel 131 extends in a curved manner from the air inlet 11 to the air outlet 12, and the curved directions of the adjacent two sub-airflow channels 131 are opposite.

In this way, the path of the airflow passage 13 can be further lengthened, and the effect of reducing the pulsation of the airflow can be further improved.

Specifically, the airflow passage 13 extends in an S-shape, a Z-shape, or a W-shape from the intake port 11 toward the exhaust port 12. The S-shaped, Z-shaped or W-shaped curved extension can make full use of the inner space of the housing 10 and make the structure of the housing 10 simple.

It should be noted that the S-, Z-or W-shaped curved extensions referred to herein are not single S-, Z-or W-shaped curved extensions, but may be curved extensions of a plurality of S-, Z-or W-shaped combinations.

In other embodiments, the airflow channel 13 may also extend in a spiral shape, but the spiral extending manner may make the structure of the housing 10 more complex, and the space outside the spiral cannot be fully utilized.

In some embodiments, the inner wall of the housing 10 has a plurality of flow guiding portions 14 protruding inward or recessed outward, and all the flow guiding portions 14 are arranged at intervals from the air inlet 11 toward the air outlet 12, so as to form an air flow channel 13 in the housing 10.

Through set up guide part 14 on the inner wall of shell 10, can guide the air current turn deflection flow to define the mode that forms air current passageway 13 through guide part 14 and be simple, the inner space of shell 10 is also by make full use of, is favorable to forming unobstructed low-resistance air current passageway 13, reduces the exhaust pressure loss, and then reaches the purpose of making an uproar of falling under the prerequisite that does not influence the compressor efficiency.

Further, the muffler 100 includes a first flow guiding group and a second flow guiding group, each of the first flow guiding group and the second flow guiding group has at least one flow guiding portion 14, and the first flow guiding group is disposed opposite to the second flow guiding group. Specifically, the housing 10 includes a first side wall 15 and a second side wall 16 disposed opposite to each other, where the first flow guiding set is disposed on the first side wall, and the second flow guiding set is disposed on the second side wall.

In this way, both opposite sides of the air flow channel 13 are able to guide the air flow, so that it is possible to further draw the path of the air flow channel 13.

Further, the flow guiding portions 14 of the first flow guiding group and the flow guiding portions 14 of the second flow guiding group are staggered and arranged at intervals from the air inlet 11 to the air outlet 12.

In other embodiments, the baffle groups may be provided on only one side wall of the housing 10.

Specifically, the side wall of the partial housing 10 is concaved inward to form a corresponding inwardly convex flow guiding portion 14, or the side wall of the partial housing 10 is convexly formed outward to form a corresponding inwardly concave flow guiding portion 14.

The manner of forming the flow guide portion 14 by using the side wall of the housing 10 to be concave or convex can be simple, and the overall structure of the housing 10 is simplified.

In some embodiments, the flow guiding portion 14 has at least two flow guiding planes 141 sequentially arranged from the air inlet 11 to the air outlet 12, and an included angle is formed between any two adjacent flow guiding planes 141. Through setting up the water conservancy diversion plane 141, can make the air current flow more smooth and easy, and the direction of guiding is more accurate, and forms the contained angle between two adjacent water conservancy diversion planes 141, can be to the guide of two different directions of air current, and then realize the air current bending, through realizing the guide of two different directions on a water conservancy diversion portion 14, can make the crooked route of air current inseparabler, the crooked route of air current passageway 13 is inseparable promptly, has still further utilized the inner space of shell 10.

Specifically, each flow guiding portion 14 of the first flow guiding group and the second flow guiding group has at least two flow guiding planes 141 sequentially arranged along a direction from the air inlet 11 to the air outlet 12, and the flow guiding plane 141 of any flow guiding portion 14 of the first flow guiding group is parallel to the flow guiding plane 141 of the flow guiding portion 14 of the second flow guiding group adjacent to the flow guiding plane 141. In this way, the air flow can be guided to move in the same direction, and smoothly flow from the air inlet 11 to the air outlet 12, so that the flow resistance is reduced, and the exhaust pressure loss is reduced.

In some embodiments, the baffle 14 is covered with a sound absorbing structure. Specifically, the sound absorbing structure may be disposed on the inner surface of the air flow channel 13 of the air guide portion 14, or may be disposed on the outer surface of the casing 10 of the air guide portion 14. The sound absorbing structure may be a sound absorbing coating or a sound absorbing medium, for example, sound absorbing cotton, and the like, and is not particularly limited. In this way, by providing the sound absorbing structure to the guide portion 14, the sound absorbing effect of the muffler 100 can be further enhanced.

In an embodiment of the present utility model, the housing 10 includes a first portion 17 and a second portion 18, the first portion 17 and the second portion 18 overlapping each other, the first portion 17 and the second portion 18 together defining an interior space of the housing 10. Specifically, the first portion 17 has a hollow structure with one end open, and the second portion 18 has a plate-like structure, and can be covered on the opening side of the first portion 17.

When the first portion 17 is a hollow structure having one end opened, the second portion 18 is a plate-like structure, and in order to further expand the inner space of the housing 10, a portion of the side wall of the second portion 18 is recessed outward to form a cavity, and the cavity extends from the air inlet 11 toward the air outlet 12 to form a portion of the air flow passage 13.

Further, a sealing member is provided between the first portion 17 and the second portion 18, and the first portion 17 and the second portion 18 are connected by the sealing member.

In some embodiments, the housing 10 is a cast molding. Specifically, the first portion 17 and the second portion 18 are both formed by a casting process. The casting molding process is simple, and the internal structure of the molded housing 10 is more accurate.

In the embodiment of the present utility model, the muffler 100 includes a plurality of the silencing members 20, and the plurality of silencing members 20 are arranged at intervals along the extending direction of the airflow passage 13.

In this way, during the process of the airflow flowing in the airflow channel 13, the airflow can sequentially pass through the plurality of silencing pieces 20, so as to eliminate low-frequency and high-frequency noise in multiple layers.

In addition, since the pulsating gas flow passes through not only the silencing members 20 but also the gaps between the adjacent two silencing members 20, various different gas flow pulsation and attenuation can be formed, and the silencing effect is improved.

Further, the arrangement path of all the silencing members 20 in the airflow passage 13 coincides with the curved extension path of the airflow passage 13. In this way, the pulsating gas flow in the gas flow path 13 can pass through the silencer 20, and the silencing effect can be improved.

The arrangement path of all the silencing members 20 in the airflow passage 13 means a line formed by connecting all the silencing members 20, which is similar to the curved extension path of the airflow passage 13. The connecting line formed by connecting all the silencing members 20 may be any one of a center point, a geometric center, a central line axis, and the like of the silencing members 20. Specifically, all the muffling members 20 are arranged in a zigzag manner from the intake port 11 toward the exhaust port 12.

Referring to fig. 3 and 4, in some embodiments, the muffler 20 has a muffler hole 21 and a muffler chamber 22, and the muffler hole 21 communicates the airflow channel 13 with the muffler chamber 22.

According to the helmholtz resonance principle, when the frequency of an incident sound wave approaches the natural frequency of a gas column in a resonator, the gas column in a short tube generates strong vibration, and acoustic energy is consumed by overcoming frictional resistance during the vibration. Therefore, when the pulsation frequency of the air flow in the air flow channel 13 is close to the natural frequency of the silencing hole 21 and the silencing cavity 22, the air flow pulsation can be reduced, and the wide-frequency noise can be eliminated.

In addition, the air flow in the air flow passage 13 enters the silencing cavity 22 through the silencing hole 21, namely, the air flow suddenly changes from small volume to large volume, so that the air pressure is small, the flow speed of the air is reduced, and part of noise is reduced.

It should be further noted that, since the silencing member 20 is provided with the silencing holes 21 and the silencing chambers 22, the sound absorption coefficient can be changed, the width of the sound absorption frequency band can be increased, and the position of the resonance sound absorption peak can be changed by reasonably changing the size, the number and the position of the silencing holes 21, the wall thickness of the silencing holes 21, and the like, thereby greatly reducing noise. Therefore, the muffler 20 of the present utility model can also improve the versatility of the muffler 100.

Specifically, the muffler 20 has a cylindrical shape, and the axial direction of the muffler 20 intersects with the extending direction of the airflow passage 13.

In this way, the air flow can flow along the outer wall of the muffler 20, reducing the flow resistance and lowering the exhaust pressure. And the silencing hole 21 is formed in the cylindrical side wall of the silencing piece 20, and can radially enter the silencing cavity 22 through the silencing hole 21, so that the small volume can be quickly suddenly changed into the large volume, and the noise reduction effect is further improved.

In some embodiments, the silencing member 20 includes a plurality of silencing holes 21 and a plurality of independent silencing cavities 22, at least one silencing hole 21 communicates with the airflow channel 13 and a corresponding silencing cavity 22, and the silencing cavities 22 are sequentially arranged in a direction intersecting with an extending direction of the airflow channel 13.

Thus, when the air flow passes through one silencing piece 20, the silencing can be performed through the silencing cavities 22, so that the noise reduction of the air flow with different frequency bands can be realized, and the noise reduction effect is improved.

Specifically, the volume of each sound deadening chamber 22 and the number, size, position, etc. of the corresponding sound deadening holes 21 may be different.

In the embodiment of the present utility model, the plurality of sound deadening chambers 22 are arranged in order along the axial direction of the cylindrical sound deadening member 20.

In some embodiments, opposite ends of the silencing member 20 extend to the inner wall of the airflow passage 13 in a direction intersecting the extending direction of the airflow passage 13.

In this way, the pulsating gas flow can be silenced by the silencer 20 when flowing through the gas flow duct 13.

Specifically, the opposite ends of the muffler 20 are embedded in the airflow passage 13.

By the way of embedding, the installation and the disassembly of the silencing piece 20 are easy. Specifically, opposite ends of the muffler 20 abut against inner walls of the first portion 17 and the second portion 18, respectively.

In the embodiment of the present utility model, the connection between the silencer 20 and the inner wall of the airflow channel 13 is provided with a shock absorbing structure 30.

In this way, when the noise reducing member 20 collides with the housing 10 by the impact of the pulsating gas flow to generate noise, the collision noise between the two can be eliminated by avoiding the collision by the shock absorbing structure 30.

Specifically, the shock absorbing structure 30 includes an elastic shock absorbing pad. The elastic shock pad may be sleeved at the end of the silencing member 20 connected to the inner wall of the airflow passage 13. More specifically, the elastic shock-absorbing pad includes two elastic shock-absorbing pads respectively sleeved at opposite ends of the silencing member 20.

In some embodiments, the silencing member 20 has a flow gap 132 between the inner wall of the airflow passage 13 in the circumferential direction in a direction intersecting the extending direction of the airflow passage 13. Specifically, there is a flow gap 132 between the cylindrical surface of the cylindrical muffler 20 and the inner wall of the airflow passage 13.

By providing the flow gaps 132, the pulsating gas flow can pass through the flow gaps 132 to form various different gas flow pulsation and attenuation, so that the initial pulsating gas flow gradually and smoothly descends in the gas flow channel 13, thereby being more beneficial to noise reduction.

In addition, due to the existence of the circulation gap 132, the unobstructed low-resistance airflow channel 13 can be formed, so that the exhaust pressure loss is reduced, and the noise reduction purpose is achieved on the premise of not influencing the energy efficiency.

In some embodiments, a silencing connector 40 is provided at the air inlet 11 of the housing 10, the silencing connector 40 being adapted to be connected to an external structure, the silencing connector 40 being adapted to silence the air flow at the air inlet 11. Specifically, the sound attenuating connector 40 is adapted to be connected to the discharge end of the compressor.

The specific structure of the sound deadening attachment 40 is similar to that of the sound deadening attachment 20, and detailed description thereof is omitted. Except that the sound deadening chamber 22 of the sound deadening attachment 40 communicates with the intake port 11, and communicates with the inner chamber of the casing 10 through the sound deadening hole 21.

In some embodiments, a check valve 50 is provided at the exhaust port 12 of the housing 10 for preventing backflow of air from the exhaust port 12 to the air flow channel 13.

Specifically, the check valve 50 is secured or interference fit at the exhaust port 12 by a retainer ring.

Based on the same inventive concept, the present utility model also provides a compressor including the silencer 100 of any of the above embodiments.

The silencer 100 and the compressor provided by the embodiment of the utility model have the following beneficial effects:

by providing the airflow passage 13 extending in a curved manner and providing the silencer 20 on the airflow passage 13, the path of the airflow passage 13 can be made longer in a limited space of the silencer 100, so that the airflow can be continuously silenced by the silencer 20 through the airflow passage 13, and the effect of reducing the pulsation of the airflow by the silencer 100 is obvious.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the patent. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (19)

1. A muffler (100), characterized by comprising:

a housing (10) having an air inlet (11), an air outlet (12), and an air flow passage (13) communicating the air inlet (11) and the air outlet (12); and

a muffler (20) provided in the airflow passage (13);

the inner wall of the shell (10) is provided with a plurality of diversion parts (14) which are convexly arranged inwards or concaved outwards, and all the diversion parts (14) are distributed at intervals from the air inlet (11) to the air outlet (12) so as to form the air flow channel (13) in the shell (10);

the air flow passage (13) extends from the air inlet (11) to the air outlet (12) in a curved manner.

2. The silencer (100) of claim 1, wherein the airflow passage (13) includes a plurality of sub-airflow passages (131) that are sequentially connected along the extending direction thereof, each of the sub-airflow passages (131) being curved to extend from the air inlet (11) toward the air outlet (12), the curved directions of the adjacent two sub-airflow passages (131) being opposite.

3. The muffler (100) according to claim 1, wherein the airflow passage (13) extends in an S-shape, a Z-shape, or a W-shape from the intake port (11) toward the exhaust port (12).

4. The muffler (100) according to claim 1, wherein the muffler (100) includes a first baffle group and a second baffle group, each of the first baffle group and the second baffle group having at least one of the baffle portions (14), the first baffle group being disposed opposite the second baffle group.

5. The muffler (100) as defined in claim 1, wherein a portion of the side wall of the housing (10) is inwardly recessed to form a corresponding inwardly protruding flow guide (14), or a portion of the side wall of the housing (10) is outwardly protruding to form a corresponding inwardly recessed flow guide (14).

6. The silencer (100) according to claim 1, wherein the flow guiding portion (14) has at least two flow guiding planes (141) arranged in sequence from the air inlet (11) to the air outlet (12), and an included angle is formed between any two adjacent flow guiding planes (141).

7. The muffler (100) as defined in claim 1, wherein the flow guide (14) is covered with a sound absorbing structure.

8. The muffler (100) according to any one of claims 1 to 7, wherein the muffler (100) includes a plurality of the muffler elements (20), the plurality of muffler elements (20) being arranged at intervals along the extending direction of the airflow passage (13).

9. The muffler (100) according to claim 8, wherein the arrangement path of all the muffling members (20) within the gas flow channel (13) coincides with the curved extension path of the gas flow channel (13).

10. The muffler (100) according to any one of claims 1 to 7, wherein opposite ends of the muffler (20) extend to be connected to an inner wall of the airflow passage (13) in a direction intersecting an extending direction of the airflow passage (13).

11. The muffler (100) as defined in claim 10, wherein opposite ends of the muffler (20) are embedded in the airflow passage (13).

12. The muffler (100) according to any one of claims 1 to 7, wherein a shock absorbing structure (30) (30) is provided at a junction of the muffler (20) and an inner wall of the airflow passage (13).

13. The muffler (100) according to any one of claims 1 to 7, wherein the muffler (20) has a flow clearance (132) between the circumferential direction and the inner wall of the airflow passage (13) in a direction intersecting the extending direction of the airflow passage (13).

14. The muffler (100) according to any one of claims 1 to 7, wherein the muffler (20) has a muffler hole (21) and a muffler chamber (22), the muffler hole (21) communicating the airflow passage (13) with the muffler chamber (22).

15. The muffler (100) as defined in claim 14, wherein the muffler (20) has a cylindrical shape, and an axial direction of the muffler (20) intersects with an extending direction of the airflow passage (13).

16. The muffler (100) as defined in claim 14, wherein the muffler (20) includes a plurality of the muffler holes (21) and a plurality of the muffler chambers (22) independent of each other, at least one of the muffler holes (21) communicating the airflow passage (13) with a corresponding one of the muffler chambers (22);

the plurality of silencing chambers (22) are arranged in sequence in a direction intersecting with the extending direction of the airflow passage (13).

17. The muffler (100) according to any one of claims 1 to 7, wherein a sound attenuating connection (40) is provided at the air inlet (11) of the housing (10), the sound attenuating connection (40) being for connection to an external structure, the sound attenuating connection (40) being for attenuating an air flow at the air inlet (11).

18. The muffler (100) according to any one of claims 1 to 7, wherein a check valve (50) is provided at the exhaust port (12) of the housing (10), the check valve (50) being for preventing a back flow of air from the exhaust port (12) to the air flow passage (13).

19. A compressor comprising a muffler (100) according to any one of claims 1 to 18.