CN218598327U - Silencer, compressor assembly and household appliance - Google Patents

Abstract

The application relates to muffler, compressor unit spare and domestic appliance, wherein, the muffler includes: the shell structure is provided with a cavity and comprises an inlet and an outlet which are communicated with the cavity; the first silencing structure is connected with the inner wall of the shell structure, and a plurality of air inlets are formed in the first silencing structure; the second silencing structure is connected with the inner wall of the shell structure between the first silencing structure and the outlet, and a plurality of air outlet holes are formed in the second silencing structure; in the direction from the inlet to the outlet, the first and second muffling structures divide the cavity into a first cavity, a second cavity and a third cavity. The technical scheme of this application has solved the relatively poor problem of muffler noise cancelling effect among the prior art effectively.

Description

Silencer, compressor assembly and household appliance

Technical Field

The application relates to the technical field of silencers, in particular to a silencer, a compressor assembly and a household appliance.

Background

With the improvement of life quality, the requirements of people on household appliances are not only satisfied with performance, but also increasingly high on noise. The main noise of the household refrigerator is from the compressor, and the noise level is also an important index for measuring the technical level of the piston compressor, and the noise of the piston compressor mainly comprises mechanical noise, pneumatic noise, electromagnetic noise and the like, wherein the pneumatic noise is generated by the compressor in the air suction and exhaust processes. The exhaust process of the piston compressor is high in gas flow rate and pressure and large in corresponding pressure pulsation relative to the air suction process, and the exhaust noise is obvious, so that a silencer needs to be designed on an exhaust path of the compressor to reduce the exhaust noise and control the noise within an acceptable range.

The exhaust silencer of refrigerating compressor and the refrigerating compressor aim at combining a straight-through perforated pipe silencer with two silencing cavities through a silencer shell, a partition plate and an inner inserting pipe. Although the silencer can reduce the flow resistance loss, the silencing effect is limited, the silencing cannot be carried out aiming at the special frequency band, and the integral silencing effect is poor.

SUMMERY OF THE UTILITY MODEL

The application provides a muffler, compressor unit spare and domestic appliance for solve the relatively poor problem of muffler noise cancelling effect among the prior art.

In order to solve the above problems, the present application provides a muffler including: the shell structure is provided with a cavity and comprises an inlet and an outlet which are communicated with the cavity; the first silencing structure is connected with the inner wall of the shell structure, and a plurality of air inlets are formed in the first silencing structure; the second silencing structure is connected with the inner wall of the shell structure between the first silencing structure and the outlet, and a plurality of air outlet holes are formed in the second silencing structure; in the direction from the inlet to the outlet, the first silencing structure and the second silencing structure divide the cavity into a first cavity, a second cavity and a third cavity.

Further, first amortization structure includes first baffle and first hush pipe, and first baffle is connected on shell structure's inner wall, and first hush pipe is installed on first baffle, and first hush pipe includes first diapire and first lateral wall, and first diapire is located one side near the import of first hush pipe, and a plurality of inlet ports set up on first lateral wall.

Further, one end of the first silencing tube, which is far away from the inlet, enters the second cavity for a first preset distance.

Further, the second silencing structure comprises a second partition plate and a second silencing pipe, the second partition plate is connected to the inner wall of the shell structure between the first partition plate and the outlet, the second silencing pipe is installed on the second partition plate, the second silencing pipe comprises a second bottom wall and a second side wall, the second bottom wall is located on one side, close to the outlet, of the second silencing pipe, and the plurality of air outlet holes are formed in the second side wall.

Further, one end of the second silencing tube, which is far away from the outlet, enters the second cavity for a second preset distance.

Further, the central axis of the first muffling pipe and the central axis of the second muffling pipe are coaxially arranged.

Furthermore, the silencer also comprises a third silencing structure, the third silencing structure is connected with the shell structure, the third silencing structure is arranged between the first silencing structure and the second silencing structure and divides the second cavity into a first sub-cavity and a second sub-cavity, and the third silencing structure is provided with a gas passage communicated with the first sub-cavity and the second sub-cavity.

Furthermore, the third silencing structure comprises a third partition plate and an inner connecting pipe, the third partition plate is connected with the inner wall of the shell structure, and the inner connecting pipe is positioned on the third partition plate.

Further, two ends of the inner connecting pipe respectively enter the first sub-cavity and the second sub-cavity for a third preset distance.

Furthermore, the third silencing structure also comprises a fourth partition plate, and the fourth partition plate is vertical to the third partition plate and is connected with the inner wall of the shell structure.

Further, the shell structure comprises a shell, the shell comprises a shell pipe section, a first head sealing section and a second head sealing section, the first head sealing section is located at the first end of the shell pipe section, the second head sealing section is located at the second end of the shell pipe section, the inlet is located at the center of the first head sealing section, and the outlet is located at the center of the second head sealing section.

Further, shell structure still includes the intake pipe, and the intake pipe is installed in the import, and the intake pipe gets into first cavity fourth predetermined distance.

Furthermore, the shell structure also comprises an air outlet pipe, the air outlet pipe is arranged at the outlet, and the air outlet pipe enters the third cavity for a fifth preset distance.

According to another aspect of the application, a compressor assembly is also provided, the compressor assembly comprises a compressor and a silencer connected with the compressor, and the silencer is the silencer.

According to another aspect of the present application, there is also provided a household appliance, which includes a silencer, wherein the silencer is the silencer.

Compared with the prior art, the technical scheme provided by the application has the following advantages:

by the aid of the technical scheme, gas enters the first cavity, enters the second cavity through the first silencing structure, enters the third cavity through the second silencing structure, and flows out of the shell structure. The gas is silenced through a plurality of cavities and the cooperation of a plurality of silencing structures, so that the noise is greatly reduced, and the purpose of reducing the noise is achieved. Particularly, through the matching of the first silencing structure and the second silencing structure, such as the distance adjustment of the first silencing structure and the second silencing structure, the noise of specific frequency can be effectively inhibited, so that the noise of the frequency can be specifically inhibited. The technical scheme of this application has solved the relatively poor problem of muffler noise cancelling effect among the prior art effectively.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 shows a schematic cross-sectional view of a muffler of the present embodiment;

FIG. 2 shows a schematic cross-sectional view of another angle of the muffler of FIG. 1;

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

FIG. 4 shows an exploded schematic view of the muffler of FIG. 1;

fig. 5 shows a schematic view of the overall structure of the silencer of fig. 1.

Wherein the figures include the following reference numerals:

10. a housing structure; 11. a housing; 12. an air inlet pipe; 13. an air outlet pipe; 20. a first sound attenuating structure; 21. a first separator; 22. a first silencer duct; 30. a second sound attenuating structure; 31. a second separator; 32. a second muffler pipe; 40. a third sound attenuating structure; 41. a third partition plate; 42. an inner connecting pipe; 43. a fourth separator; 100. a first cavity; 200. a second cavity; 300. and a third cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1 to 5, the muffler of the present embodiment includes: a housing structure 10, a first sound attenuating structure 20, and a second sound attenuating structure 30. The housing structure 10 has a cavity, the housing structure 10 including an inlet and an outlet in communication with the cavity. The first silencing structure 20 is connected to the inner wall of the housing structure 10, and the first silencing structure 20 is provided with a plurality of air inlets. The second sound attenuating structure 30 is connected to the inner wall of the housing structure 10 between the first sound attenuating structure 20 and the outlet, and the second sound attenuating structure 30 is provided with a plurality of air outlet holes. The first and second sound attenuating structures 20 and 30 divide the cavity into a first cavity 100, a second cavity 200, and a third cavity 300 in a direction from the inlet to the outlet.

By applying the technical solution of the present embodiment, the gas enters the first cavity 100, enters the second cavity 200 through the first silencing structure 20, enters the third cavity 300 through the second silencing structure 30, and exits the housing structure 10. The gas is silenced through the plurality of cavities and the cooperation of the plurality of silencing structures, so that the noise is greatly reduced, and the purpose of reducing the noise is achieved. In particular, by the cooperation of the first sound deadening structure 20 and the second sound deadening structure 30, for example, the distance adjustment of the first sound deadening structure 20 and the second sound deadening structure 30, the noise of a specific frequency can be effectively suppressed, so that the noise of the frequency can be suppressed in a targeted manner. The technical scheme of this embodiment has solved the relatively poor problem of muffler noise cancelling effect among the prior art effectively.

As shown in fig. 1 and 2, in the solution of the present embodiment, the first silencing structure 20 includes a first partition 21 and a first silencing pipe 22, the first partition 21 is connected to the inner wall of the casing structure 10, the first silencing pipe 22 is installed on the first partition 21, the first silencing pipe 22 includes a first bottom wall and a first side wall, the first bottom wall is located on one side of the first silencing pipe 22 close to the inlet, and the plurality of air inlet holes are provided on the first side wall. The first partition plate 21 and the first silencing pipe 22 are structurally arranged, so that the processing cost is low. Gaseous entering first cavity 100, the great gaseous inflation of first cavity 100, expanded gas is provided with a plurality of inlet ports through the first lateral wall of first hush pipe 22 by bypassing first diapire, gets into the inside of first hush pipe 22, and such structure is better to the noise reduction effect.

As shown in fig. 1 and 2, in the present embodiment, an end of the first muffler pipe 22 away from the inlet enters the second chamber 200 by a first predetermined distance. Thus, the gas enters the second cavity 200 through the first silencing tube 22, the volume of the gas is rapidly expanded, and the purpose of reducing noise is achieved well.

As shown in fig. 1 to 3, in the present embodiment, the second silencing structure 30 includes a second partition plate 31 and a second silencing pipe 32, the second partition plate 31 is connected to the inner wall of the casing structure 10 between the first partition plate 21 and the outlet, the second silencing pipe 32 is mounted on the second partition plate 31, the second silencing pipe 32 includes a second bottom wall and a second side wall, the second bottom wall is located on the side of the second silencing pipe 32 close to the outlet, and a plurality of air outlet holes are provided on the second side wall. The gas in the second chamber 200 enters the third chamber 300 through the plurality of gas outlet holes of the second muffling tube 32, and the above structure can further reduce noise.

As shown in fig. 1 to 3, in the solution of the present embodiment, an end of the second muffling tube 32 far from the outlet enters the second cavity 200 by a second predetermined distance. The second silencing pipe 32 enters the second cavity 200 for a certain distance, and the gas enters the second silencing pipe 32 in a larger space volume, so that a better noise reduction effect is achieved.

As shown in fig. 1 and 2, in the present embodiment, the center axis of the first silencer duct 22 and the center axis of the second silencer duct 32 are coaxially disposed. So that the gas does not easily generate noise when passing through the first and second muffling pipes 22 and 32. It should be noted that the inner diameter of the first muffling tube 22 is equal to the inner diameter of the second muffling tube 32, the central axis of the first muffling tube 22 is coaxial with the central axis of the first baffle plate 21, and the central axis of the second muffling tube 32 is coaxial with the central axis of the second baffle plate 31, so that the gas can pass through the muffling tube directly, and the curved path of noise can be reduced.

As shown in fig. 1 to fig. 3, in the technical solution of the present embodiment, the muffler further includes a third sound-deadening structure 40, the third sound-deadening structure 40 is connected to the casing structure 10, the third sound-deadening structure 40 is disposed between the first sound-deadening structure 20 and the second sound-deadening structure 30, and divides the second cavity 200 into a first sub-cavity and a second sub-cavity, and the third sound-deadening structure 40 has a gas passage communicating the first sub-cavity and the second sub-cavity. The third muffling structure 40 is provided to increase the buffering path of the gas, so as to further reduce the noise, especially the noise of specific frequency, which can be determined by adjusting the distance L4 between the first muffling structure 20 and the third muffling structure 40.

As shown in fig. 1 to 3, in the solution of the present embodiment, the third sound attenuating structure 40 includes a third partition plate 41 and an inner pipe 42, the third partition plate 41 is connected to the inner wall of the housing structure 10, and the inner pipe 42 is located on the third partition plate 41. The structure is convenient to set and good in noise reduction effect. The center axis of the inner joint tube 42 and the center axis of the first muffler pipe 22 are coaxially arranged, and the inner diameter of the first muffler pipe 22, the inner diameter of the second muffler pipe 32, and the inner diameter of the inner joint tube 42 are the same. The first silencing structure 20 is an integral structure, the second silencing structure 30 is an integral structure, and the third partition plate 41 and the inner joint pipe 42 are an integral structure.

As shown in fig. 1, in the solution of the present embodiment, two ends of the inner connecting tube 42 enter the first sub-cavity and the second sub-cavity respectively by a third predetermined distance. The structure can ensure that the gas enters the inner connecting pipe 42 in a larger space, and the gas enters the larger space from the inner connecting pipe 42, so that the noise can be effectively suppressed, and a better noise reduction effect is achieved. In the present embodiment, both ends of the inner joint pipe 42 are open, and both the first muffling pipe 22 and the second muffling pipe 32 are open at one end.

As shown in fig. 1 to fig. 3, in the solution of the present embodiment, the third sound-deadening structure 40 further includes a fourth partition 43, and the fourth partition 43 is perpendicular to the third partition 41 and is connected to the inner wall of the housing structure 10. Thus, the third partition plate 41 and the fourth partition plate 43 jointly divide the second chamber 200 into four sub-chambers, i.e., four resonant chambers, and both ends of the fourth partition plate 43 enter the first silencing tube 22 and the second silencing tube 32 for a certain distance, respectively. The four resonant cavities are isolated from each other by the third partition plate 41 and the fourth partition plate 42, and such a structure is preferable in terms of sound attenuation, which will be discussed in principle.

As shown in fig. 1 to 5, in the technical solution of the present embodiment, the shell structure 10 includes a shell 11, and the shell 11 includes a shell pipe section, a first head sealing section and a second head sealing section, the first head sealing section is located at a first end of the shell pipe section, the second head sealing section is located at a second end of the shell pipe section, the inlet is located at a center of the first head sealing section, and the outlet is located at a center of the second head sealing section. The profile of the shell 11 with the structure is gradually changed, and the structure has good noise reduction effect. I.e. the shape of the housing 11 as described above resembles a capsule. The inner diameter of the casing pipe section is at least two times larger than the diameter of the first silencing pipe 22, so that after the gas enters the casing 11, a larger space is provided for expansion, and the noise reduction effect is better.

As shown in fig. 1 to 5, in the technical solution of the present embodiment, the housing structure 10 further includes an air inlet pipe 12, the air inlet pipe 12 is installed at the inlet, and the air inlet pipe 12 enters the first cavity 100 by a fourth predetermined distance.

As shown in fig. 1 to 5, in the solution of the present embodiment, the shell structure 10 further includes an outlet pipe 13, the outlet pipe 13 is installed at the outlet, and the outlet pipe 13 enters the third cavity 300 by a fifth predetermined distance. In the same way, the outlet pipe 13 enters the third cavity 300 for the fifth predetermined distance, and also plays a role in buffering gas, so as to achieve the purpose of reducing noise.

The same inner diameter of the inlet pipe 12 and the same inner diameter of the outlet pipe 13 are both L1, the same inner diameter of the first silencing pipe 22 and the same inner diameter of the second silencing pipe 32 are both L2, and L1 is smaller than L2/2. The distance L3 between the first sound attenuating structure 20 and the second sound attenuating structure 30 can be adjusted to change the frequency of eliminating noise of a specific frequency by adjusting the distance L4 between the first sound attenuating structure 20 and the third sound attenuating structure 40, and the frequency of eliminating noise of a specific frequency can be changed by adjusting the distance L5 between the second sound attenuating structure 30 and the third sound attenuating structure 40.

The exhaust working process of the silencer of the embodiment is as follows: after being discharged from the silencing cavities of the cylinder and the cylinder block, the gas enters the first cavity 100 through the gas inlet pipe 12, then enters the first sub-cavity in two ways through a plurality of gas inlet holes of the first silencing pipe 22, then enters the second sub-cavity through the inner connecting pipe 42, exits from the resonant cavity, enters the third cavity 300 through a plurality of gas outlet holes in the second silencing pipe 32, and finally is discharged through the gas outlet pipe 13.

The working principle of the silencer of the embodiment is as follows: in the course of flowing through the entire muffler gas path, it passes through the structure of the expanding chamber (first chamber 100), the perforated pipe (first muffler pipe 22), the resonance chamber (first sub-chamber), the resonance chamber (second sub-chamber), the perforated pipe (second muffler pipe 32), and the expanding chamber (third chamber 300). The expansion cavity utilizes a pipe cavity abrupt change structure with a discontinuous section, so that sound waves are mismatched in transmission impedance of the pipeline, sound reflection is caused to perform noise elimination, and a good noise elimination effect can be obtained in a wider frequency band. The design of the perforated pipe utilizes gas flow within the hole to change the acoustic impedance of the perforations, thereby increasing the amount of sound attenuation. The resonant cavity utilizes the principle of resonance noise elimination, the noise elimination frequency is determined by the volume, cross-sectional area and length of the neck of the cavity, and the resonance frequency of the resonant cavity can be changed by changing three factors. Through the aforesaid, the muffler of this application has utilized multiple amortization to keep away from the principle and has silenced.

The silencer can obtain good silencing effect in a wider frequency band by designing the expansion cavity; the inner connecting pipe perforation design can further increase the noise elimination amount, and the exhaust pressure loss can be avoided from being too large due to the fact that the diameter of the inner connecting pipe (the first noise elimination pipe 22 and the second noise elimination pipe 32) is larger than 2 times of the diameter of the air inlet pipe, and the inner connecting pipe perforations are densely distributed; the resonant cavity can adjust the distance between the partition plates according to requirements to change the cross-sectional area and the volume of the resonant cavity, so that the resonant silencing frequency is changed, and the aim of silencing in a special frequency band is fulfilled.

The application also provides a compressor assembly, which comprises a compressor and a silencer connected with the compressor, wherein the silencer is the silencer.

The application also provides a household appliance, which comprises a silencer, wherein the silencer is the silencer. The household appliance can be an air conditioner, a fresh air conditioner, a refrigerator and the like.

It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (15)

1. A muffler, comprising:

a housing structure (10), the housing structure (10) having a cavity, the housing structure (10) including an inlet and an outlet in communication with both the cavity;

the first silencing structure (20), the first silencing structure (20) is connected with the inner wall of the shell structure (10), and a plurality of air inlets are formed in the first silencing structure (20);

the second silencing structure (30), the second silencing structure (30) is connected with the inner wall of the shell structure (10) between the first silencing structure (20) and the outlet, and a plurality of air outlet holes are formed in the second silencing structure (30);

the first and second sound attenuating structures (20, 30) divide the chamber into a first chamber (100), a second chamber (200), and a third chamber (300) in a direction along the inlet to the outlet.

2. A silencer according to claim 1, characterized in that the first silencing structure (20) comprises a first partition (21) and a first silencing duct (22), the first partition (21) being connected to an inner wall of the casing structure (10), the first silencing duct (22) being mounted on the first partition (21), the first silencing duct (22) comprising a first bottom wall on a side of the first silencing duct (22) near the inlet, and a first side wall on which the plurality of air inlet holes are provided.

3. A silencer according to claim 2, characterized in that the end of the first silencer duct (22) remote from the inlet opening enters the second chamber (200) a first predetermined distance.

4. A silencer according to claim 2, characterized in that the second silencing structure (30) comprises a second partition (31) and a second silencing duct (32), the second partition (31) being connected to the inner wall of the casing structure (10) between the first partition (21) and the outlet, the second silencing duct (32) being mounted on the second partition (31), the second silencing duct (32) comprising a second bottom wall on the side of the second silencing duct (32) near the outlet and a second side wall on which the plurality of outlet openings are provided.

5. A silencer according to claim 4, characterized in that the end of the second silencer duct (32) remote from the outlet enters the second chamber (200) a second predetermined distance.

6. A silencer according to claim 4, characterized in that the central axis of the first silencer duct (22) and the central axis of the second silencer duct (32) are arranged coaxially.

7. The muffler according to any one of claims 1 to 6 further comprising a third sound attenuating structure (40), the third sound attenuating structure (40) being connected to the housing structure (10), the third sound attenuating structure (40) being disposed between the first sound attenuating structure (20) and the second sound attenuating structure (30) and dividing the second chamber (200) into a first sub-chamber and a second sub-chamber, the third sound attenuating structure (40) having a gas passage communicating the first sub-chamber and the second sub-chamber.

8. A silencer according to claim 7, characterized in that the third silencing structure (40) comprises a third partition (41) and an inner pipe (42), the third partition (41) being connected to the inner wall of the casing structure (10), the inner pipe (42) being located on the third partition (41).

9. A silencer according to claim 8, characterized in that the two ends of the inner pipe (42) enter the first and second sub-chambers, respectively, a third predetermined distance.

10. A silencer according to claim 8, wherein the third silencing structure (40) further comprises a fourth partition (43), the fourth partition (43) being perpendicular to the third partition (41) and being attached to the inner wall of the casing structure (10).

11. A silencer according to claim 7, characterized in that the casing structure (10) comprises a casing (11), the casing (11) comprising a casing pipe section, a first head section at a first end of the casing pipe section, and a second head section at a second end of the casing pipe section, the inlet being located in the centre of the first head section, and the outlet being located in the centre of the second head section.

12. A silencer according to claim 11, characterized in that the housing structure (10) further comprises an inlet pipe (12), the inlet pipe (12) being mounted at the inlet, the inlet pipe (12) entering the first chamber (100) a fourth predetermined distance.

13. A silencer according to claim 11, characterized in that the housing structure (10) further comprises an outlet duct (13), the outlet duct (13) being mounted at the outlet, the outlet duct (13) entering the third chamber (300) a fifth predetermined distance.

14. A compressor assembly, comprising a compressor and a muffler associated with the compressor, the muffler being as claimed in any one of claims 1 to 13.

15. A household appliance, characterized in that it comprises a silencer according to any one of claims 1 to 13.

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