CN218598374U - Compressor - Google Patents

Abstract

The utility model provides a compressor. The compressor includes: a housing; the pump body assembly is arranged in the shell and comprises a first silencing structure, the first silencing structure is arranged on the pump body assembly, and the first silencing structure is provided with a silencing cavity; the driving device is connected with the crankshaft of the pump body assembly; and the second silencing structure is arranged between the driving device and the first silencing structure and comprises a plurality of silencing parts which are arranged at intervals along the circumferential direction of the crankshaft, and each silencing part is provided with a plurality of sound absorption holes. The utility model discloses the silencer of having solved compressor among the prior art effectively can not satisfy the problem of making an uproar requirement of falling.

Description

Compressor

Technical Field

The utility model relates to a compressor technical field particularly, relates to a compressor.

Background

Currently, aerodynamic noise is the main source of noise in rolling rotor compressors, including high velocity gas flow, unsteady gas flow, and noise due to interaction of gas flow with objects, with frequencies in the range of 500-4000 Hz. The rolling rotor compressor has periodic and discontinuous exhaust noise, and the exhaust noise can cause the noise of an inner machine and an outer machine of an air conditioner, so that the experience of a user is influenced.

In the prior art, an exhaust muffler is usually disposed on a flange of a rolling rotor compressor, and the noise elimination principle of the exhaust muffler is as follows: the sound energy is reflected to the sound source after the acoustic impedance of some frequencies of the sound wave at the branch point in the silencing cavity is mutated, part of the sound energy is dissipated due to the frictional damping of the silencing cavity, and the rest part of the sound energy is continuously transmitted forward so as to achieve the aim of silencing. Because the muffling frequency range of the muffling cavity is narrow, the volume of the muffling cavity is generally increased in order to improve the frequency bandwidth of resonance muffling.

However, the above arrangement for increasing the volume of the muffling chamber may cause a decrease in volumetric efficiency of the rolling rotor type compressor, affecting the operating efficiency of the rolling rotor type compressor, resulting in that the operating efficiency and the noise reduction performance of the rolling rotor type compressor cannot be achieved at the same time.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a compressor to the silencer of compressor can not satisfy the problem of making an uproar requirement of falling among the solution prior art.

In order to achieve the above object, the present invention provides a compressor, including: a housing; the pump body assembly is arranged in the shell and comprises a first silencing structure, the first silencing structure is arranged on the pump body assembly, and the first silencing structure is provided with a silencing cavity; the driving device is connected with the crankshaft of the pump body assembly; and the second silencing structure is arranged between the driving device and the first silencing structure and comprises a plurality of silencing parts which are arranged at intervals along the circumferential direction of the crankshaft, and each silencing part is provided with a plurality of sound absorption holes.

Further, the aperture of the sound absorption hole is more than or equal to 0.2mm and less than or equal to 0.5mm.

Further, the second sound deadening structure further includes: the annular structure is arranged on the inner peripheral surface of the shell; wherein the annular structure is arranged coaxially with the crankshaft.

Further, the outer surface of each sound-deadening portion includes a first surface disposed toward the crankshaft, the plurality of sound-absorbing holes include a first sound-absorbing hole group disposed on the first surface, and the first sound-absorbing hole group includes a plurality of first sound-absorbing holes disposed at intervals in the first direction and/or the second direction; the first direction is consistent with the extension direction of the crankshaft, and the second direction is along the circumferential direction of the crankshaft.

Further, the outer surface of each silencing part also comprises a second surface and a third surface, the second surface is connected with the third surface through the first surface, and the second surface and the third surface are both connected with the inner circumferential surface of the annular structure; the plurality of sound absorption holes further comprise a second sound absorption hole group, the second sound absorption hole group is arranged on the second surface and/or the third surface, and the second sound absorption hole group comprises a plurality of second sound absorption holes which are arranged at intervals along the first direction and/or the third direction; the first direction is consistent with the extension direction of the crankshaft, and the third direction is along the radial direction of the crankshaft.

Furthermore, each sound attenuation part is strip-shaped, the extending direction of each sound attenuation part is parallel to the central axis of the annular structure, and the orthographic projection of each sound attenuation part on the annular structure is rectangular or square.

Furthermore, each sound eliminating part is strip-shaped, an included angle is formed between the extending direction of each sound eliminating part and the central axis of the annular structure, and the orthographic projection of each sound eliminating part on the annular structure is a parallelogram.

Furthermore, each silencing part is strip-shaped, an included angle is formed between the extending direction of each silencing part and the central axis of the annular structure, and the orthographic projection of each silencing part on the annular structure is S-shaped or wavy.

Further, the sound absorption holes are round holes, elliptical holes, polygonal holes or semicircular holes.

Further, the plurality of sound absorbing holes further include a third sound absorbing hole group, the outer surface of each sound absorbing part further includes a fourth surface, the fourth surface is arranged towards the driving device, and the third sound absorbing hole group is arranged on the fourth surface; and/or the outer surface of each sound-deadening portion further comprises a fifth surface disposed toward the first sound-deadening structure, and the third sound-absorbing hole group is disposed on the fifth surface.

Further, the cross-sections of the muffling portions are uniform along the extending direction of the muffling portions.

Use the technical scheme of the utility model, the compressor includes first amortization structure and second amortization structure, and first amortization structure sets up on pump body subassembly and has the amortization chamber. The second silencing structure is arranged between the driving device and the first silencing structure and comprises a plurality of silencing parts which are arranged at intervals along the circumferential direction of the crankshaft, and each silencing part is provided with a plurality of sound absorption holes. Therefore, in the running process of the compressor, when gas passes through the sound absorption holes, the friction resistance between the sound absorption holes and the gas is increased, and then sound energy is consumed, so that the aim of silencing is fulfilled. The sound absorption hole can absorb sound and fall and make an uproar to high frequency gas dynamic nature noise, the amortization chamber is used for the centering, low frequency gas dynamic nature noise is absorbed sound and is fallen and make an uproar, and then carry out the amortization to full frequency gas dynamic nature noise through first amortization structure and second amortization structure and fall and make an uproar, the problem that the silencer of compressor can not satisfy the requirement of making an uproar of falling among the prior art has been solved, under the prerequisite that does not influence compressor operating efficiency, the performance of making an uproar of falling of compressor has been promoted, in order to satisfy user's user demand, user's use experience has been promoted.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a cross-sectional view of a first embodiment of a compressor according to the present invention;

fig. 2 shows a schematic perspective view of a second sound attenuating structure of the compressor of fig. 1;

FIG. 3 illustrates a top view of the second sound attenuating structure of FIG. 2;

fig. 4 shows a schematic perspective view of a second muffling structure of a second embodiment of a compressor according to the present invention;

FIG. 5 shows a top view of the second sound attenuating structure of FIG. 4;

fig. 6 shows a schematic perspective view of a second silencing structure according to a third embodiment of the compressor of the present invention;

fig. 7 shows a top view of the second sound attenuating structure of fig. 6.

Wherein the figures include the following reference numerals:

10. a housing; 11. an upper cover; 12. a lower cover; 20. a pump body assembly; 21. a first sound attenuating structure; 22. a crankshaft; 23. a cylinder; 24. a pump body rotor assembly; 30. a drive device; 40. a second sound attenuating structure; 41. a sound deadening section; 411. a sound absorbing aperture; 4111. a first sound-absorbing aperture; 4112. a second sound-absorbing hole; 412. a first surface; 413. a second surface; 414. a third surface; 415. a fourth surface; 42. an annular structure; 50. a liquid distributor.

Detailed Description

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

It is noted that, unless otherwise indicated, 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.

In the present application, where the contrary is not intended, the use of directional terms such as "upper" and "lower" is generally with respect to the orientation shown in the drawings, or to the vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "left and right" are generally directed to the left and right as shown in the drawings; the terms "inner and outer" refer to the inner and outer relative to the contour of the respective member itself, but the above directional terms are not intended to limit the present invention.

In order to solve the problem that the silencer of compressor can not satisfy the requirement of making an uproar of falling among the prior art, this application provides a compressor.

Example one

As shown in fig. 1 to 3, the compressor includes a housing 10, a pump body assembly 20, a driving device 30, and a second noise reduction structure 40. Wherein, pump body subassembly 20 sets up in casing 10, and pump body subassembly 20 includes first amortization structure 21, and first amortization structure 21 sets up on pump body subassembly 20, and first amortization structure 21 has the amortization chamber. The drive device 30 is connected to the crankshaft 22 of the pump block assembly 20. The second silencing structure 40 is disposed between the driving device 30 and the first silencing structure 21, the second silencing structure 40 includes a plurality of silencing portions 41, the plurality of silencing portions 41 are disposed at intervals in the circumferential direction of the crankshaft 22, and each silencing portion 41 has a plurality of sound absorbing holes 411.

By applying the technical solution of the present embodiment, the compressor includes the first sound deadening structure 21 and the second sound deadening structure 40, and the first sound deadening structure 21 is disposed on the pump body assembly 20 and has a sound deadening chamber. The second silencing structure 40 is disposed between the driving device 30 and the first silencing structure 21, and the second silencing structure 40 includes a plurality of silencing portions 41, the plurality of silencing portions 41 being disposed at intervals in the circumferential direction of the crankshaft 22, each silencing portion 41 having a plurality of sound absorbing holes 411. Thus, in the operation process of the compressor, when the gas passes through the sound absorption hole 411, the frictional resistance between the sound absorption hole 411 and the gas is increased to further consume the sound energy, thereby achieving the purpose of sound attenuation. The hole 411 of inhaling sound can absorb sound and fall and make an uproar to high frequency gas dynamic nature noise, the amortization chamber is used for the centering, low frequency gas dynamic nature noise is absorbed sound and is fallen and make an uproar, and then carry out the amortization to full frequency gas dynamic nature noise through first amortization structure 21 and second amortization structure 40 and fall and make an uproar, the problem of the requirement of making an uproar can not satisfy to fall of the silencer of having solved compressor among the prior art, under the prerequisite that does not influence compressor operating efficiency, the performance of making an uproar of falling of compressor has been promoted, in order to satisfy user's user demand, user's use experience has been promoted.

Optionally, the aperture of the sound absorption hole 411 is 0.2mm or more and 0.5mm or less. Like this, under the prerequisite of ensureing noise reduction part 41 structural strength, the sound absorption that noise reduction part 41 can be promoted in the aforesaid setting is fallen the noise performance, and then has reduced the noise that produces in the compressor operation process, has promoted user's use and has experienced.

In the present embodiment, the aperture of the sound absorption hole 411 is 0.4m.

It should be noted that the aperture of the sound absorption hole 411 is not limited to this, and can be adjusted according to the working condition and the use requirement. Optionally, the sound absorbing holes 411 have a hole diameter of 0.2mm, or 0.25mm, or 0.3mm, or 0.35mm, or 0.45mm, or 0.48mm, or 0.5mm.

In particular, the pump block assembly 20 further comprises a cylinder 23, the medium being compressed inside the cylinder 23.

As shown in fig. 2 and 3, second sound attenuating structure 40 also includes an annular structure 42. All the muffling portions 41 are provided on the inner peripheral surface of the annular structure 42, and the annular structure 42 is provided on the inner wall of the housing 10. Wherein the annular structure 42 is disposed coaxially with the crankshaft 22. Therefore, on one hand, the structure of the second silencing structure 40 is simpler, the processing and the realization are easy, and the processing cost and the processing difficulty of the second silencing structure 40 are reduced; on the other hand, the normal operation of the compressor is prevented from being influenced by the movement interference between the crankshaft 22 and the annular structure 42 in the rotation process, and the operation reliability of the compressor is improved.

Specifically, the annular structure 42 has a predetermined gap with the crankshaft 22, and the sound deadening portion 41 is located in the predetermined gap to absorb and reduce noise of the gas passing through the predetermined gap. Simultaneously, above-mentioned setting makes second sound-absorbing structure 40 more even, unanimous to carminative sound absorption performance, has further promoted the sound absorption and noise reduction performance of second sound-absorbing structure 40.

Optionally, the outer surface of each sound deadening portion 41 includes a first surface 412, the first surface 412 is disposed toward the crankshaft 22, and the plurality of sound absorbing holes 411 includes a first sound absorbing hole group disposed on the first surface 412, the first sound absorbing hole group including a plurality of first sound absorbing holes 4111 disposed at intervals in the first direction and/or the second direction. Wherein the first direction coincides with the extension direction of the crankshaft 22 and the second direction is along the circumferential direction of the crankshaft 22. Thus, in the operation process of the compressor, gas can flow through the first surface 412, and the first sound absorption holes 4111 formed in the first surface 412 can sufficiently absorb and reduce noise of the gas, so that the sound absorption performance of the second sound absorption structure 40 is improved.

In this embodiment, the first sound absorption hole group includes a plurality of first sound absorption holes 4111 arranged along the first direction and the second direction at intervals, so that the sound absorption amount of the first sound absorption hole group is increased on the premise of ensuring the structural strength of the sound attenuation part 41, and the sound absorption and noise reduction performance of the second sound attenuation structure 40 on high-frequency aerodynamic noise is further improved.

In other embodiments not shown in the drawings, the first sound absorption hole group comprises a plurality of first sound absorption holes arranged at intervals along the first direction, so that the structure of the second sound absorption structure is simpler, the processing and the realization are easy, and the processing cost of the compressor is reduced.

In other embodiments not shown in the drawings, the first sound absorption hole group comprises a plurality of first sound absorption holes arranged at intervals along the second direction, so that the second sound absorption structure is simpler in structure, easy to process and realize, and the processing cost of the compressor is reduced.

Optionally, the outer surface of each sound deadening portion 41 further includes a second surface 413 and a third surface 414, the second surface 413 is connected to the third surface 414 through the first surface 412, and the second surface 413 and the third surface 414 are both connected to the inner circumferential surface of the annular structure 42; the plurality of sound absorbing apertures 411 further includes a second set of sound absorbing apertures disposed in the second surface 413 and/or the third surface 414, the second set of sound absorbing apertures including a plurality of second sound absorbing apertures 4112 spaced apart in the first direction and/or the third direction. Wherein the first direction coincides with the extension direction of the crankshaft 22 and the third direction is in the radial direction of the crankshaft 22. Like this, at the in-process of gas flow through second sound-absorbing structure 40, the above-mentioned setting of second sound-absorbing hole group can further promote the amortization performance of second sound-absorbing structure 40, has promoted user's use and has experienced.

In this embodiment, the second sound absorption hole group is disposed on the second surface 413 and the third surface 414, and the second sound absorption hole group includes a plurality of second sound absorption holes 4112 disposed at intervals along the first direction and the third direction, so that the sound absorption amount of the second sound absorption hole group is increased on the premise of ensuring the structural strength of the sound attenuation portion 41, and the sound absorption and noise reduction performance of the second sound attenuation structure 40 on the high-frequency aerodynamic noise is further improved.

In other embodiments not shown in the drawings, the second sound absorbing hole group is disposed only on the second surface, and the second sound absorbing hole group includes a plurality of second sound absorbing holes spaced in the first direction and the third direction, so that the structure of the sound deadening portion is simpler, and the sound deadening portion is easy to process and implement, reducing the processing cost of the compressor.

In other embodiments not shown in the drawings, the second sound absorption hole group is only disposed on the second surface, and the second sound absorption hole group includes a plurality of second sound absorption holes disposed at intervals in the first direction, so that the structure of the sound deadening portion is simpler, the processing and the implementation are easy, and the processing cost of the compressor is reduced.

In other embodiments not shown in the drawings, the second sound absorption hole group is only disposed on the second surface, and the second sound absorption hole group includes a plurality of second sound absorption holes spaced in the third direction, so that the structure of the sound deadening portion is simpler, the processing and the implementation are easy, and the processing cost of the compressor is reduced.

In other embodiments not shown in the drawings, the second sound absorbing hole group is disposed only on the third surface, and the second sound absorbing hole group includes a plurality of second sound absorbing holes spaced in the first direction and the third direction, so that the structure of the sound deadening portion is simpler, and the sound deadening portion is easy to process and implement, reducing the processing cost of the compressor.

In other embodiments not shown in the drawings, the second sound absorption hole group is only disposed on the third surface, and the second sound absorption hole group includes a plurality of second sound absorption holes disposed at intervals in the first direction, so that the structure of the sound deadening portion is simpler, the processing and implementation are easy, and the processing cost of the compressor is reduced.

In other embodiments not shown in the drawings, the second sound absorbing hole group is disposed only on the third surface, and the second sound absorbing hole group includes a plurality of second sound absorbing holes spaced in the third direction, so that the structure of the sound deadening portion is simpler, and the sound absorbing portion is easy to process and implement, thereby reducing the processing cost of the compressor.

In other embodiments not shown in the drawings, the second sound absorption hole group is disposed on the second surface and the third surface, and the second sound absorption hole group includes a plurality of second sound absorption holes spaced in the first direction, so that the structure of the sound deadening portion is simpler, the processing and the implementation are easy, and the processing cost of the compressor is reduced.

In other embodiments not shown in the drawings, the second sound absorption hole group is disposed on the second surface and the third surface, and the second sound absorption hole group includes a plurality of second sound absorption holes spaced in the third direction, so that the structure of the sound attenuation part is simpler, the processing and implementation are easy, and the processing cost of the compressor is reduced.

Alternatively, each sound-deadening portion 41 is in a strip shape, the extending direction of each sound-deadening portion 41 and the central axis of the annular structure 42 are arranged in parallel, and the orthographic projection of each sound-deadening portion 41 on the annular structure 42 is rectangular or square. In this way, the first surface 412 and the second surface 413 are perpendicular to each other, and the second surface 413 and the third surface 414 are parallel to each other, so that the structure of the sound-deadening portion 41 is simpler, and the sound-deadening portion is easy to process and implement, thereby reducing the processing cost and the processing difficulty of the second sound-deadening structure 40.

In this embodiment, the orthographic projection of each sound-deadening portion 41 on the annular structure 42 is a rectangle, and the surface where the sound-deadening portions 41 are connected with the annular structure 42 is an arc surface matched with the inner surface of the annular structure 42, so that the connecting area of the sound-deadening portions and the annular structure is increased, and the structural strength of the second sound-deadening structure 40 is improved.

Alternatively, the silencer 41 is welded or integrally formed with the ring structure 42.

Alternatively, the sound absorption holes 411 are circular holes, or elliptical holes, or polygonal holes, or semicircular holes. Like this, above-mentioned setting makes sound-absorbing hole 411's shape more diversified to satisfy different user demand and operating mode, also promoted staff's processing flexibility.

In the present embodiment, the sound absorption hole 411 is a circular hole.

Optionally, the plurality of sound absorbing holes 411 further includes a third sound absorbing hole group, the outer surface of each sound deadening portion 41 further includes a fourth surface 415, the fourth surface 415 being disposed toward the driving device 30, the third sound absorbing hole group being disposed on the fourth surface 415; and/or the outer surface of each sound-deadening portion 41 further includes a fifth surface provided toward the first sound-deadening structure 21, and the third sound-absorbing hole group is provided on the fifth surface. Like this, at the in-process of the second amortization structure 40 of gas flow through, the above-mentioned setting of third sound absorption hole group can further promote the amortization performance of second amortization structure 40, has promoted user's use and has experienced.

In the present embodiment, the cross sections of the silencer parts 41 are uniform along the extending direction of the silencer parts 41. Thus, the structure of the silencing part 41 is simpler, the silencing part is easy to process and realize, and the processing cost and the processing difficulty of the silencing part 41 are reduced.

Alternatively, the number of the silencer units 41 is 6 or more and 16 or less. Thus, the number of the silencing parts 41 can be selected more flexibly by the arrangement, different use requirements and working conditions can be met, and the processing flexibility of workers can be improved.

In the present embodiment, the number of the silencer units 41 is 12.

As shown in fig. 1, the compressor further includes a liquid distributor 50, the casing 10 includes an upper cover 11, a lower cover 12 and a casing body, the upper cover 11 is welded to the upper end surface of the casing body, and the lower cover 12 is welded to the lower end surface of the casing body. The driving device 30 is a motor, the outer end face of the motor is in interference fit with the inner surface of the housing 10 through shrink fit or the like, and the annular structure 42 is assembled inside the housing 10 through shrink fit, welding or the like. The pump rotor assembly 24 of the pump assembly 20 is fixed to the inside of the housing 10 by spot welding. The liquid distributor 50 is welded with the shell 10 through a lower elbow of the liquid distributor and an air suction pipe of the pump body assembly.

In this embodiment, the height of the ring structure 42 is adjusted according to the height of the lower cavity of the motor.

Example two

The compressor in the second embodiment is different from the compressor in the first embodiment in that: the shape of the sound-deadening portion 41 is different.

As shown in fig. 4 and 5, each sound-deadening portion 41 has a strip shape, the extending direction of the sound-deadening portion 41 forms an angle with the central axis of the annular structure 42, and the orthographic projection of each sound-deadening portion 41 on the annular structure 42 is a parallelogram. Thus, the structure of the sound deadening portion 41 is simpler, the sound deadening portion is easy to process and implement, and the processing cost and the processing difficulty of the second sound deadening structure 40 are reduced.

Optionally, an angle formed between the extending direction of the sound deadening portion 41 and the central axis of the annular structure 42 is greater than or equal to 10 ° and less than or equal to 45 °. Like this, the value of the contained angle that forms between the extending direction of noise reduction portion 41 and the central axis of loop configuration 42 is more nimble in above-mentioned setting to satisfy different user demand and operating mode, also promoted staff's processing flexibility.

As shown in fig. 4 and 5, the sound deadening portion 41 extends at an angle of 30 ° with respect to the central axis of the annular structure 42.

It should be noted that, the value of the included angle formed between the extending direction of the sound deadening portion 41 and the central axis of the annular structure 42 is not limited to this, and may be adjusted according to the working condition and the use requirement. Optionally, the angle between the extending direction of the sound deadening portion 41 and the central axis of the annular structure 42 is 10 °, or 15 °, or 25 °, or 35 °, or 40 °, or 45 °.

EXAMPLE III

The compressor in the third embodiment is different from the first embodiment in that: the shape of the sound-deadening portion 41 is different.

Alternatively, each sound-deadening portion 41 is in a strip shape, the extending direction of each sound-deadening portion 41 forms an included angle with the central axis of the annular structure 42, and the orthographic projection of each sound-deadening portion 41 on the annular structure 42 is in an S shape or a wave shape. Like this, under the prerequisite that the overall height of second amortization structure 40 was confirmed, the surface area of noise reduction portion 41 can be increased in the aforesaid setting, and then has increased the sound absorbing area of sound absorbing hole 411, has further promoted the sound absorption and noise reduction performance of second amortization structure 40.

As shown in fig. 6 and 7, the orthographic projection of each silencer 41 on the annular structure 42 is in an S shape, so that the structure of the silencer 41 is simpler, the silencer is easy to process and implement, and the difficulty in processing the silencer 41 is reduced.

In the present embodiment, the angle between the extending direction of the sound deadening portion 41 and the central axis of the annular structure 42 is in the range of 10 to 45 °.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the compressor includes first amortization structure and second amortization structure, and first amortization structure sets up on pump body subassembly and has the amortization chamber. The second silencing structure is arranged between the driving device and the first silencing structure and comprises a plurality of silencing parts which are arranged at intervals along the circumferential direction of the crankshaft, and each silencing part is provided with a plurality of sound absorption holes. Therefore, in the running process of the compressor, when gas passes through the sound absorption holes, the friction resistance between the sound absorption holes and the gas is increased, and then sound energy is consumed, so that the aim of silencing is fulfilled. The sound absorption hole can absorb sound and fall and make an uproar to high frequency gas dynamic nature noise, the amortization chamber is used for the centering, low frequency gas dynamic nature noise is absorbed sound and is fallen and make an uproar, and then carry out the amortization to full frequency gas dynamic nature noise through first amortization structure and second amortization structure and fall and make an uproar, the problem that the silencer of compressor can not satisfy the requirement of making an uproar of falling among the prior art has been solved, under the prerequisite that does not influence compressor operating efficiency, the performance of making an uproar of falling of compressor has been promoted, in order to satisfy user's user demand, user's use experience has been promoted.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

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 example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A compressor, comprising:

a housing (10);

a pump body assembly (20) disposed within the housing (10), the pump body assembly (20) including a first sound attenuating structure (21), the first sound attenuating structure (21) being disposed on the pump body assembly (20), the first sound attenuating structure (21) having a sound attenuating cavity;

a drive device (30) connected to the crankshaft (22) of the pump body assembly (20);

and a second silencing structure (40) disposed between the driving device (30) and the first silencing structure (21), wherein the second silencing structure (40) comprises a plurality of silencing portions (41), the plurality of silencing portions (41) are disposed at intervals along the circumferential direction of the crankshaft (22), and each silencing portion (41) is provided with a plurality of sound absorption holes (411).

2. The compressor as claimed in claim 1, wherein the diameter of the sound absorbing hole (411) is 0.2mm or more and 0.5mm or less.

3. Compressor, in accordance with claim 1, characterized in that said second silencing structure (40) further comprises:

an annular structure (42), all of the sound-deadening portions (41) being provided on an inner peripheral surface of the annular structure (42), the annular structure (42) being provided on an inner wall of the housing (10);

wherein the annular structure (42) is arranged coaxially with the crankshaft (22).

4. A compressor according to claim 3, wherein an outer surface of each of the muffling portions (41) includes a first surface (412), the first surface (412) being disposed toward the crankshaft (22), the plurality of sound absorbing holes (411) includes a first sound absorbing hole group, the first sound absorbing hole group being disposed on the first surface (412), the first sound absorbing hole group including a plurality of first sound absorbing holes (4111) spaced apart in a first direction and/or a second direction; wherein the first direction coincides with an extension direction of the crankshaft (22) and the second direction is along a circumferential direction of the crankshaft (22).

5. Compressor according to claim 4, characterized in that the outer surface of each silencing portion (41) further comprises a second surface (413) and a third surface (414), the second surface (413) being connected to the third surface (414) through the first surface (412), the second surface (413) and the third surface (414) being connected to the inner peripheral surface of the annular structure (42); the plurality of sound absorbing holes (411) further comprises a second set of sound absorbing holes disposed in the second surface (413) and/or the third surface (414), the second set of sound absorbing holes comprising a plurality of second sound absorbing holes (4112) spaced apart in the first direction and/or the third direction; wherein the first direction coincides with an extension direction of the crankshaft (22) and the third direction is in a radial direction of the crankshaft (22).

6. The compressor according to claim 3, wherein each of the sound-absorbing portions (41) has a strip shape, the extending direction of the sound-absorbing portion (41) and the central axis of the annular structure (42) are arranged in parallel, and the orthographic projection of each of the sound-absorbing portions (41) on the annular structure (42) is rectangular or square.

7. A compressor according to claim 3, wherein each of said muffling portions (41) is in the shape of a bar, the extending direction of said muffling portion (41) forms an included angle with the central axis of said annular structure (42), and the orthographic projection of each of said muffling portions (41) on said annular structure (42) is in the shape of a parallelogram.

8. The compressor according to claim 3, wherein each of the sound-absorbing portions (41) is strip-shaped, the extending direction of the sound-absorbing portion (41) forms an included angle with the central axis of the annular structure (42), and the orthographic projection of each of the sound-absorbing portions (41) on the annular structure (42) is S-shaped or wavy.

9. Compressor according to claim 1, characterized in that said sound absorption holes (411) are circular holes, or elliptical holes, or polygonal holes, or semicircular holes.

10. The compressor of claim 1, wherein the plurality of sound-absorbing holes (411) further includes a third sound-absorbing hole group,

the outer surface of each of the muffling portions (41) further comprises a fourth surface (415), the fourth surface (415) being disposed toward the driving means (30), the third set of sound absorbing holes being disposed on the fourth surface (415); and/or the presence of a gas in the gas,

the outer surface of each of the sound-deadening portions (41) further includes a fifth surface disposed toward the first sound-deadening structure (21), the third sound-absorbing hole group being disposed on the fifth surface.

11. Compressor according to claim 1, characterized in that the cross-section of the sound-attenuating portion (41) is uniform along the extension of the sound-attenuating portion (41).

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