CN217737518U

CN217737518U - Silencing assembly, expansion valve and air conditioning system

Info

Publication number: CN217737518U
Application number: CN202221547439.2U
Authority: CN
Inventors: 贺宇辰; 江超; 徐冠军; 刘曈晖
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-11-04
Anticipated expiration: 2032-06-20

Abstract

The utility model provides a amortization subassembly, expansion valve and air conditioning system, amortization subassembly, include: the silencing block group comprises a plurality of silencing channels and a plurality of first passing flow channels, and the flow cross-sectional area of each first passing flow channel is larger than the minimum flow cross-sectional area of the plurality of silencing channels. The utility model provides a problem that electronic expansion valve's amortization structure among the prior art is reduced by the system reliability that the impurity shutoff caused easily.

Description

Silencing assembly, expansion valve and air conditioning system

Technical Field

The utility model relates to an electronic expansion valve amortization technical field particularly, relates to a amortization subassembly, expansion valve and air conditioning system.

Background

At present, in the use process of the electronic expansion valve, due to unstable flow of two-phase fluid and different sizes of bubbles before or after throttling, discontinuous noise is easy to generate and the noise value is larger.

In the prior art, a silencing structure is usually arranged on an electronic expansion valve, the silencing structure comprises a plurality of pores, and a refrigerant achieves a silencing effect in a process of flowing through the plurality of pores.

However, since the diameter of the pores in the silencing structure is small, impurities in the refrigerant are easily blocked in the pores during the process of flowing through the silencing structure, and the silencing effect and the reliability of the long-term operation performance of the system are affected.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide an amortization subassembly, expansion valve and air conditioning system to solve the problem that the system reliability that the amortization structure of the electronic expansion valve among the prior art is easily caused by the impurity shutoff reduces.

In order to achieve the above object, according to a first aspect of the present invention, there is provided a noise reduction assembly, comprising: the silencing block group comprises a plurality of silencing channels and a plurality of first passing flow channels, and the flow cross-sectional area of each first passing flow channel is larger than the minimum flow cross-sectional area of the plurality of silencing channels.

Furthermore, the noise elimination block group includes the noise elimination group body, and a plurality of first runners and a plurality of noise elimination passageways all set up in the noise elimination group body.

Furthermore, the silencing block group comprises a silencing group body and a support frame, the silencing block group is arranged on the support frame, the first flow passages are arranged in the support frame, and the silencing passages are arranged in the silencing group body.

Further, the noise reduction assembly further comprises: the first through flow passages and the silencing passages are arranged on the silencing group body; the support frame is provided with a plurality of second through channels, the plurality of second through channels are arranged at intervals, and the noise elimination block group is arranged on the support frame.

Further, the silencing group body includes: the first silencing block is arranged on the first side of the support frame; the second silencing block is arranged on the second side of the support frame, and the orthographic projection area of the first silencing block is larger than that of the second silencing block, or the orthographic projection of the first silencing block is superposed with that of the second silencing block; a plurality of silencing channels are arranged on the first silencing block and the second silencing block; a plurality of first through flow passages are arranged on the first silencing block and/or the second silencing block.

Furthermore, a plurality of first passing flow channels are arranged on the first silencing block, and at least parts of the first passing flow channels on the first silencing block are opposite to the silencing channels on the second silencing block.

Further, the support frame includes: the supporting body is provided with an installation opening, and the plurality of second passage channels are arranged around the installation opening; the protruding body is arranged on the supporting body and extends in the circumferential direction to form an installation channel communicated with the installation opening in a surrounding mode, and the second silencing block is arranged in the installation channel.

Further, at least a portion of the second plurality of through flow passages on the support body oppose the plurality of sound damping channels on the first sound damping block.

Furthermore, a limiting groove is formed in the inner wall surface of the installation channel, the limiting groove extends along the circumferential direction of the installation channel, and the second silencing block is arranged in the limiting groove.

Further, the support frame still includes: the turn-ups sets up and extends at the rim of supporting the body and towards the direction of keeping away from the protrusion body, and the turn-ups sets up around the circumferential direction who supports the body, and first noise elimination piece sets up on the turn-ups.

Further, the average inner diameter of the plurality of sound attenuation channels is less than 0.15mm.

According to the utility model provides a second aspect provides an expansion valve, including valve body and amortization subassembly, be provided with the medium circulation passageway on the valve body, the amortization subassembly sets up in the medium circulation passageway, and the amortization subassembly is foretell amortization subassembly.

Furthermore, the silencing block group and the support frame of the silencing assembly are both arranged in the valve port, and the flow cross section of the first flow passage is more than or equal to one half of the cross section of the valve port.

According to the utility model provides a third aspect provides an air conditioning system, including refrigerant circulation return circuit and expansion valve, the expansion valve setting is on refrigerant circulation return circuit, and the expansion valve is foretell expansion valve.

According to the utility model provides a fourth aspect provides an air conditioning system, including refrigerant circulation return circuit and amortization subassembly, the amortization subassembly sets up on refrigerant circulation return circuit, and the amortization subassembly is foretell amortization subassembly.

Further, the air conditioning system further includes: the filter is arranged on the refrigerant circulation loop, and the flow cross section of the first passing flow passage in the silencing assembly is larger than that of the smallest mesh of the filter screen in the filter.

By applying the technical scheme of the utility model, the silencing component comprises a silencing block group and a support frame, the silencing block group comprises a plurality of silencing channels and a plurality of first through runners, and the flow cross section of the first through runners is larger than the minimum flow cross section of the plurality of silencing channels; a plurality of second channels are arranged on the supporting frame at intervals, and the silencing block group is arranged on the supporting frame. The noise reduction device comprises a plurality of noise elimination blocks, a plurality of flow channels, a first flow passage and a second flow passage, wherein the plurality of noise elimination channels in the noise elimination blocks are utilized, the noise is reduced in the process that a medium passes through, the first flow passage is utilized, the flow sectional area of the first flow passage is larger than the minimum flow sectional area of the plurality of noise elimination channels, in the process that the medium passes through, impurities in the medium are prevented from being piled and blocked on the noise elimination blocks, the impurities in the medium can pass through the first flow passage, the flow passage is matched with the second flow passage on a support frame, the noise reduction effect is guaranteed, meanwhile, the condition that the first flow passage in the noise elimination blocks is dirty and blocked is avoided, and the reliability of a noise reduction assembly is improved.

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:

figure 1 shows a schematic structural view of an embodiment of a silencer assembly according to the present invention;

fig. 2 shows a schematic structural view of a support frame of a silencer assembly according to the present invention;

fig. 3 shows a schematic structural view of a first embodiment of a first sound-damping block of a sound-damping assembly according to the invention;

fig. 4 shows a schematic structural view of a first embodiment of a first sound-damping block of a sound-damping assembly according to the invention;

fig. 5 shows a schematic structural view of an expansion valve according to the present invention;

fig. 6 shows a schematic structural diagram of an air conditioning system according to the present invention.

Wherein the figures include the following reference numerals:

100. a silencing block group; 101. a sound-deadening channel; 102. a first passage channel; 11. a first sound attenuation block; 12. a second sound attenuation block; 200. a support frame; 201. a second passage channel; 20. a support body; 202. an installation opening; 21. a protruding body; 210. installing a channel; 211. a limiting groove; 22. flanging; 300. a valve body; 400. a noise reduction assembly; 301. a medium flow channel; 500. a refrigerant circulation circuit; 501. an evaporator; 502. a condenser; 600. an expansion valve; 700. a first filter; 800. a second filter.

Detailed Description

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

Referring to fig. 1 to 4, the present invention provides a noise reduction assembly, including: the muffler block group 100 comprises a plurality of muffler channels 101 and a plurality of first through runners 102, and the flow cross-sectional area of the first through runners 102 is larger than the minimum flow cross-sectional area in the muffler channels 101.

By arranging the plurality of sound attenuation channels 101 and the plurality of first passing flow channels 102 on the sound attenuation block group 100, the flow cross-sectional area of the first passing flow channel 102 is larger than the minimum flow cross-sectional area of the plurality of sound attenuation channels 101, so that impurities in a medium can pass through the first passing flow channel 102 in the process that the medium passes through the sound attenuation block group 100, and the sound attenuation effect of the sound attenuation block group 100 is prevented from being influenced due to the fact that the impurities in the medium are accumulated in the sound attenuation channels 101.

In the first embodiment of the present invention, the noise elimination block set 100 includes a noise elimination set body, and the first through runners 102 and the noise elimination channels 101 are disposed in the noise elimination set body. Wherein, with the position that amortization group body set up in the valve port department of valve body or pipeline or valve body and pipeline combine to play the effect of amortization at the in-process of medium flow through amortization group body, simultaneously, utilize first setting through runner 102 to make the impurity in the medium can following current, avoid producing the shutoff to vocal passageway 101, influence the noise cancelling effect.

In the second embodiment provided by the present invention, the noise elimination block set 100 includes a noise elimination set body and a support frame 200, the noise elimination block set 100 is disposed on the support frame 200, a plurality of first through runners 102 are disposed in the support frame 200, and a plurality of noise elimination channels 101 are disposed in the noise elimination set body. The setting can make the noise cancelling effect maximize of amortization group body like this, and the support frame 200 that sets up alone sets up first runner 102 that passes through on support frame 200, makes the impurity in the medium pass through by first runner 102 that passes through, and the body of amortization group is mutually supported with support frame 200, has realized the noise cancelling effect promptly, has avoided the problem that noise cancelling channel 101 is by the shutoff of impurity again.

In a third embodiment of the present invention, the noise reduction assembly further comprises: the silencing group comprises a silencing group body, wherein a plurality of first passing flow passages 102 and a plurality of silencing passages 101 are arranged on the silencing group body; the supporting frame 200 is provided with a plurality of second flow channels 201, the plurality of second flow channels 201 are arranged at intervals, and the silencing block group 100 is arranged on the supporting frame 200. According to the embodiment of the present invention, the noise elimination assembly includes the noise elimination block set 100 and the support frame 200, the noise elimination block set body of the noise elimination block set 100 is provided with a plurality of noise elimination channels 101 and a plurality of first through flow channels 102, and the flow cross-sectional area of the first through flow channels 102 is greater than the minimum flow cross-sectional area in the plurality of noise elimination channels 101; a plurality of second flow channels 201 are arranged on the support frame 200, the second flow channels 201 are arranged at intervals, and the silencing block group 100 is arranged on the support frame 200. The noise reduction device has the advantages that the noise is reduced by the aid of the multiple silencing channels 101 in the silencing block group 100 in the medium passing process, the flow cross section area of the first passing channel 102 is larger than the minimum flow cross section area of the multiple silencing channels 101 by the aid of the first passing channel 102, impurities in the medium are prevented from being accumulated on the silencing block group 100 in the medium passing process, the impurities in the medium can pass through the first passing channel 102 and are matched with the second passing channel 201 on the support frame 200, the silencing effect is guaranteed, the first passing channel 102 in the silencing block group 100 is prevented from being dirty and blocked, and reliability of a silencing assembly is improved.

Specifically, the muffler assembly body includes: the first silencing block 11 is arranged on the first side of the support frame 200; the second silencing block 12 is arranged on the second side of the support frame 200, the orthographic projection area of the first silencing block 11 is larger than that of the second silencing block 12, or the orthographic projection of the first silencing block 11 is superposed with that of the second silencing block 12; a plurality of silencing channels 101 are arranged on the first silencing block 11 and the second silencing block 12; a plurality of first through flow passages 102 are provided in the first sound attenuation block 11 and/or the second sound attenuation block 12. In the using process, when a medium enters or leaves the silencing assembly, bubbles in the medium can be refined into fine bubbles by the plurality of silencing channels 101 on the first silencing block 11 and the plurality of silencing channels 101 on the second silencing block 12, and meanwhile, the first through flow passage 102 is arranged to avoid complete fouling of the plurality of silencing channels 101. In addition, the first sound attenuation block 11 and the second sound attenuation block 12 are sequentially arranged at intervals along the extending direction of the medium flowing channel, so that the sound attenuation effect of the sound attenuation assembly is improved under the combined action of the first sound attenuation block 11 and the second sound attenuation block 12.

The orthographic projection refers to the projection of the first sound attenuation block 11 and the second sound attenuation block 12 on the horizontal plane.

In the implementation process, a plurality of first through flow passages 102 are arranged on the first sound attenuation block 11, and at least parts of the plurality of first through flow passages 102 on the first sound attenuation block 11 are opposite to the plurality of sound attenuation channels 101 on the second sound attenuation block 12. In the process that the medium flows through the plurality of silencing channels 101 in the flowing process of the medium, if impurities in the medium are excessive, a part of the medium is remained on the second silencing block 12, and the other part of the impurities flow out through the plurality of first through flow channels 102 on the first silencing block 11, so that the silencing channels 101 on the first silencing block 11 and the second silencing block 12 are prevented from being dirty and blocked to influence the silencing effect. When the medium flows reversely, the impurities remained on the second sound attenuation block 12 can be directly carried out.

In the first embodiment of the first sound attenuation block 11 of the present invention, as shown in fig. 3, the first through flow channel 102 is disposed in the middle of the first sound attenuation block 11, and the sound attenuation channel 101 of the second sound attenuation block 12 is disposed in the middle of the second sound attenuation block 12.

In the second embodiment of the first sound attenuation block 11 of the present invention, as shown in fig. 4, a plurality of first through runners 102 are provided at the edge of the first sound attenuation block 11, and at this time, the sound attenuation passages 101 of the second sound attenuation block 12 are provided at the edge of the second sound attenuation block 12.

In the embodiment provided by the present invention, as shown in fig. 2, the supporting frame 200 includes: a support body 20, wherein the support body 20 is provided with an installation opening 202, and a plurality of second through runners 201 are arranged around the installation opening 202; and a projection body 21 provided on the support body 20, the projection body 21 extending in a circumferential direction to enclose a mounting passage 210 communicating with the mounting opening 202, the second sound attenuation block 12 being provided in the mounting passage 210. In the process of medium flowing, a part of medium is silenced by using the silencing channel 101 on the second silencing block 12, the other part of medium flows to the silencing channel 101 on the first silencing block 11 through the second through channel 201 on the support body 20 to achieve the silencing effect, meanwhile, impurities in the medium can be directly attached to the first silencing block 11 through the second through channel 201, and when the medium flows reversely, the medium on the first silencing block 11 is taken out and flows out through the second through channel 201 on the support body 20, so that the silencing effect is ensured, and the first silencing block 11 and the second silencing block 12 are cleaned.

Specifically, at least a part of the plurality of second through flow passages 201 on the support body 20 is opposed to the plurality of sound attenuation passages 101 on the first sound attenuation block 11. Because the second passage channel 201 has poorer noise reduction capability for the medium than the noise reduction channel 101, at least part of the second passage channels 201 on the support body 20 is opposite to the noise reduction channels 101 on the first noise reduction block 11, so that the medium can be immediately silenced by the noise reduction channels 101 on the first noise reduction block 11 after flowing through the second passage channels 201, and overlarge noise is avoided.

In order to facilitate mounting of the second sound attenuation block 12, a limiting groove 211 is formed in the inner wall surface of the mounting channel 210, the limiting groove 211 extends along the circumferential direction of the mounting channel 210, and the second sound attenuation block 12 is arranged in the limiting groove 211. This stops the second sound attenuation block 12 with the opposite groove walls of the stopper groove 211 to keep it stable when the second sound attenuation block 12 is impacted by a medium.

In the specific implementation process, the supporting frame 200 further includes: and the flange 22 is arranged on the edge of the support body 20 and extends towards the direction far away from the protruding body 21, the flange 22 is arranged around the circumferential direction of the support body 20, and the first sound attenuation block 11 is arranged on the flange 22. Through setting up turn-ups 22, make first noise elimination piece 11 and support body 20 between have the clearance, utilize this clearance to play the effect of buffering to the medium, avoid the medium directly to strike on support body 20 or directly strike first noise elimination piece 11 after the support body 20 after flowing through first noise elimination piece 11, cause medium energy loss great, influence the operation of whole medium circulation system. Preferably, the distance (i.e. the height of the flange 22) between the connecting end face of the first sound attenuation block 11 and the end face of the support body 20 enclosing the mounting opening 202 is 0.2mm to 3mm, and preferably 0.8mm, so as to ensure that the distance between the first sound attenuation block 11 and the second sound attenuation block 12 achieves an optimal noise reduction effect.

Preferably, the average inner diameter of the plurality of sound-damping channels 101 is less than 0.15mm. Thus, the bubbles in the medium are uniformly refined, and the silencing effect is improved.

The utility model provides a amortization subassembly can be fixed on the valve body part or in the pipe fitting or the junction of pipe fitting and valve body, and the in-process that the medium passed through the amortization subassembly can play the noise cancelling effect.

Through the combined action of the first noise elimination block 11 and the second noise elimination block 12, the noise reduction effect is optimized, and meanwhile, due to the arrangement of the first passing flow channel 102 and the second passing flow channel 201, the influence of the first passing flow channel 102 and the second passing flow channel 201 on the pressure of a medium and the influence of noise reduction can be made up, and meanwhile, the problem that the noise elimination channel 101 is easily blocked by impurities in the medium is solved.

As shown in fig. 5, the utility model also provides an expansion valve, including valve body 300 and amortization subassembly 400, be provided with medium circulation passageway 301 on the valve body 300, amortization subassembly 400 sets up in medium circulation passageway 301, and the amortization subassembly is foretell amortization subassembly.

Wherein, a valve port is arranged in the valve body 300, the silencing block group 100 and the support frame 200 are both arranged in the valve port, and the flow cross-sectional area of the first passage flow channel 102 is more than or equal to one half of the cross-sectional area of the valve port. The flow cross-sectional area of the second passing runner 201 is greater than or equal to one half of the valve port cross-sectional area, so that the occurrence of filth blockage in the silencing passage 101 can be avoided, and the occurrence of obvious pressure reduction in the process that the medium passes through the first passing runner 102 or the second passing runner 201 is avoided.

As shown in fig. 6, the utility model also provides an air conditioning system, including refrigerant circulation return circuit 500 and expansion valve 600, expansion valve 600 sets up on refrigerant circulation return circuit 500, and expansion valve 600 is foretell expansion valve 600.

The utility model also provides an air conditioning system, including refrigerant circulation return circuit 500 and amortization subassembly, the amortization subassembly sets up on refrigerant circulation return circuit 500, and the amortization subassembly is the amortization subassembly of above-mentioned embodiment.

The air conditioning system further comprises a filter, the filter is arranged on the refrigerant circulation loop 500, and the flow cross-sectional area of the first passing flow passage 102 in the silencing assembly is larger than that of the smallest mesh of a filter screen in the filter.

Specifically, the filter includes a first filter 700 and a second filter 800, the first filter 700 and the second filter 800 are disposed on the refrigerant circulation circuit 500 at an interval, and the expansion valve 600 is disposed between the first filter 700 and the second filter 800. The refrigerant circulation circuit 500 is further provided with an evaporator 501 and a condenser 502. In the practical application process, a two-phase refrigerant circulates in the refrigerant circulation circuit 500, bubbles in the refrigerant are refined by using the silencing passages 101 in the first silencing block 11 and the second silencing block 12 in the silencing assembly in the process that the refrigerant passes through the expansion valve 600, so that the silencing effect can be achieved, meanwhile, due to the arrangement of the first passing flow passage 102 and the second passing flow passage 201, the situation that the silencing passage 101 is blocked by impurities in the refrigerant and impurities which are not filtered in the first filter 700 can be avoided, after passing through the first passing flow passage 102 and the second passing flow passage 201, the second filter 800 can be continuously used for filtering, so that the operation reliability of the air conditioning system is improved, when the impurities are blocked in the silencing passage 101, the impurities in the silencing passage 101 can be brought out when the refrigerant reversely flows, the cleaning effect is achieved, and the dirty blocking time is delayed.

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

according to the utility model provides a silencing assembly, including noise elimination block group 100 and support frame 200, noise elimination block group 100 includes a plurality of noise elimination passageways 101 and a plurality of first runner 102 that passes through, and the flow cross section area that first runner 102 passes through is greater than the minimum flow cross section area in a plurality of noise elimination passageways 101; a plurality of second flow channels 201 are arranged on the support frame 200, the second flow channels 201 are arranged at intervals, and the silencing block group 100 is arranged on the support frame 200. The noise reduction device comprises a plurality of noise elimination channels 101 in a noise elimination block group 100, wherein noise is reduced in the process of passing a medium, the flow cross section area of the first passing channel 102 is larger than the minimum flow cross section area of the plurality of noise elimination channels 101 by utilizing a first passing flow channel 102, so that impurities in the medium are prevented from being accumulated on the noise elimination block group 100 in the process of flowing the medium, the impurities in the medium can pass through the first passing flow channel 102 and are matched with a second passing flow channel 201 on a support frame 200, the noise elimination effect is guaranteed, meanwhile, the first passing flow channel 102 in the noise elimination block group 100 is prevented from being dirty and blocked, and the reliability of a noise elimination assembly is improved.

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, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

For ease of description, spatially relative terms such as "over 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

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

1. A sound attenuating assembly, comprising:

the noise elimination block set (100) comprises a plurality of noise elimination channels (101) and a plurality of first passing flow passages (102), and the flow cross-sectional area of the first passing flow passages (102) is larger than the minimum flow cross-sectional area of the noise elimination channels (101).

2. The acoustic dampening assembly of claim 1, wherein the acoustic dampening block set (100) includes an acoustic dampening block body, the plurality of first pass-through runners (102) and the plurality of acoustic dampening channels (101) each being disposed in the acoustic dampening block body.

3. The acoustic muffling assembly of claim 1, wherein the acoustic muffling block set (100) comprises an acoustic muffling block body and a support frame (200), the acoustic muffling block set (100) being disposed on the support frame (200), the plurality of first through flow passages (102) being disposed in the support frame (200), the plurality of muffling passages (101) being disposed in the acoustic muffling block body.

4. The acoustic abatement assembly of claim 1, further comprising:

the silencing group comprises a silencing group body, wherein the silencing channels (101) and the first through flow channels (102) are arranged on the silencing group body;

the silencer comprises a supporting frame (200), wherein a plurality of second flow channels (201) are arranged on the supporting frame (200), the second flow channels (201) are arranged at intervals, and the silencer block group (100) is arranged on the supporting frame (200).

5. The acoustic silencer assembly of claim 4, wherein the acoustic silencer assembly body includes:

the first silencing block (11) is arranged on the first side of the support frame (200);

a second sound attenuation block (12) arranged on a second side of the support frame (200);

the first silencing block (11) and the second silencing block (12) are respectively provided with a plurality of silencing channels (101); the first silencing block (11) and/or the second silencing block (12) are/is provided with a plurality of first through flow passages (102).

6. The sound attenuation assembly according to claim 5, characterized in that the first sound attenuation block (11) is provided with the first plurality of through flow passages (102), and at least part of the first plurality of through flow passages (102) on the first sound attenuation block (11) is opposite to the plurality of sound attenuation channels (101) on the second sound attenuation block (12).

7. The acoustic silencer assembly of claim 5, wherein the support bracket (200) includes:

the support body (20), the support body (20) is provided with an installation opening (202), and a plurality of second through flow channels (201) are arranged around the installation opening (202);

a protruding body (21) provided on the support body (20), the protruding body (21) extending in a circumferential direction to enclose an installation channel (210) communicating with the installation opening (202), the second sound attenuation block (12) being provided in the installation channel (210).

8. The silencing assembly of claim 7, wherein at least part of said second plurality of passage channels (201) on said support body (20) is opposite to said plurality of silencing channels (101) on said first silencing block (11).

9. The sound attenuation assembly according to claim 7, characterized in that a limiting groove (211) is provided on an inner wall surface of the mounting channel (210), the limiting groove (211) extends in a circumferential direction of the mounting channel (210), and the second sound attenuation block (12) is disposed in the limiting groove (211).

10. The acoustic silencer assembly of claim 7, wherein the support bracket (200) further includes:

the flanging (22) is arranged on the edge of the support body (20) and extends towards the direction far away from the protruding body (21), the flanging (22) is arranged around the circumferential direction of the support body (20), and the first silencing block (11) is arranged on the flanging (22).

11. The silencing assembly of claim 1 wherein the plurality of silencing channels (101) have an average inner diameter of less than 0.15mm.

12. An expansion valve comprising a valve body (300) and a noise dampening assembly (400), said valve body (300) being provided with a medium flow channel (301), said noise dampening assembly (400) being arranged in said medium flow channel (301), characterized in that said noise dampening assembly is a noise dampening assembly according to any of claims 1 to 11.

13. An expansion valve according to claim 12, wherein a valve port is arranged in the valve body (300), the muffler block group (100) and the support frame (200) of the muffler assembly (400) are both mounted in the valve port, and the cross-sectional flow area of the first through-flow passage (102) is equal to or greater than half of the cross-sectional area of the valve port.

14. An air conditioning system comprising a refrigerant circulation circuit (500) and an expansion valve (600), the expansion valve (600) being arranged on the refrigerant circulation circuit (500), characterized in that the expansion valve (600) is the expansion valve (600) as claimed in claim 13.

15. An air conditioning system comprising a refrigerant circulation circuit (500) and a silencing assembly arranged on said refrigerant circulation circuit (500), characterized in that said silencing assembly is as claimed in any one of claims 1 to 11.

16. The air conditioning system of claim 15, further comprising:

the filter is arranged on the refrigerant circulation loop (500), and the flow cross-sectional area of a first passing flow passage (102) in the silencing assembly is larger than that of the smallest mesh of a filter screen in the filter.