Air conditioner pipe with built-in silencer

Abstract

The utility model provides an air conditioner pipe with a built-in silencer, and belongs to the technical field of automobile parts. The hush pipe is arranged in the body pipeline, one end of the hush pipe is connected with the air inlet connector of the air inlet end of the body pipeline, the other end of the hush pipe is suspended, and the interval is formed between the other end of the hush pipe and the air outlet end, so that when air flow enters from the air inlet connector and enters the inner cavity of the body pipeline through the hush pipe, the air flow enters the inner cavity of the body pipeline; due to the fact that airflow enters the large inner cavity from the small inner cavity, acoustic impedance changes can be caused through changes of the section of the pipeline, noise reduction is achieved through interference counteracting of generated reflected sound waves and original sound waves, meanwhile, a plurality of protruding noise reduction joints are arranged on the outer side wall of the noise reduction pipe, reflection and scattering of the sound waves are achieved through the noise reduction joints for multiple times, and noise reduction is achieved. The airflow turbulence is reduced, the airflow velocity is maintained, the energy consumption is reduced, meanwhile, additional space occupation and pipeline arrangement are not needed, additional space occupation is avoided, a pipeline system is simplified, and later maintenance is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, in particular to an air conditioner pipe with built-in silencer. BACKGROUND

[0002] With the development of automobile technology, the requirement for automobile driving comfort is also higher and higher, and almost all modern cars are equipped with air conditioning systems, and the air conditioning system needs to be configured with air conditioner pipes for flow guiding. Therefore, the use performance of the air conditioner pipe has an impact on the driving experience of the automobile, and the industry needs to be continuously improved.

[0003] When the automobile air conditioning system is running, refrigerant, airflow and the like flow at high speed in the pipeline system, thereby generating noise, and the generated noise is transmitted to the cockpit, affecting the driving experience. Therefore, the industry usually considers installing a silencing structure in the pipeline system to reduce the operating noise of the air conditioning system. At present, the existing air conditioner pipes of automobile air conditioning systems on the market, such as the automobile air conditioner pipeline with silencing function disclosed in patent CN 221678466U, include a pipeline and a silencing device. The inner side of the silencing device is fixedly connected to the outer side of the pipeline. At this time, the silencing device includes an outer pipe, and the inner side of the outer pipe is fixedly connected to the outer side of the pipeline. In addition, a spiral groove is formed in the wall of the outer pipe, and the inner part of the outer pipe is provided with a silencing assembly, and the outer side of the silencing assembly is fixedly connected to the inner side of the pipeline. In addition, the outer side of the silencing device is fixedly connected to the inner side of the fixing device, and the fixing device is used to fix the silencing device and the pipeline. The silencing assembly includes a silencing pipe, a reflecting plate and a silencing plate. The inner side of the silencing pipe is fixedly connected to a partition plate. The airflow enters the inner part of the silencing pipe through the pipeline, first flows to the reflecting plate, is bounced to the silencing plate through the reflecting plate, the silencing plate absorbs the sound generated by the airflow, and the airflow continues to flow forward to the partition plate, the airflow is blocked by the partition plate, the flow rate of the airflow is reduced, and the noise is further reduced. As can be seen, the existing air conditioner pipe is usually arranged independently and then connected together for use, i.e. the silencing device is externally mounted, which requires additional installation space and is connected with additional pipelines, increasing the complexity of the pipeline, causing inconvenience in later maintenance, increasing the cost, in addition, the inner part is provided with a partition plate and the like to block the airflow, which is easy to form airflow turbulence, obviously reduces the flow rate of the airflow, thereby increasing the energy consumption, and is not conducive to the performance improvement of the automobile air conditioning system. SUMMARY

[0004] In view of the above problems existing in the prior art, the air conditioner pipe with a built-in silencer is provided to realize the built-in silencer pipe in the body pipe, the silencer pipe is coaxially arranged along the length direction of the body pipe, long path silencing is realized, the outer wall of the silencer pipe is provided with a plurality of silencer sections, and a space is arranged between adjacent two silencer sections, each silencer section is arranged to protrude from the outer wall of the silencer pipe, one end of the silencer pipe is connected with the air inlet, and the other end is suspended in the body pipe, after the airflow passes through the silencer pipe, the airflow enters the body pipe with a larger inner cavity, the change of acoustic impedance is realized, the reflected sound wave is formed to interfere and cancel the original sound wave, silencing is realized, meanwhile, the multi-stage change is realized through the silencer sections outside the silencer pipe, the reflection and scattering of the sound wave are realized multiple times, the silencing effect is further improved, and the airflow turbulence is also reduced, the airflow velocity is ensured while the noise is reduced, the excessive increase of energy consumption is effectively avoided, in addition, the built-in silencer pipe does not occupy additional installation space, the additional pipeline arrangement is reduced, the pipeline system is simplified, the later maintenance is facilitated, the cost is reduced, and the performance of the automobile air conditioning system is improved.

[0005] The specific technical solutions are as follows:

[0006] The air conditioner pipe with a built-in silencer comprises a body pipe, the two ends of the body pipe are respectively an air inlet end and an air outlet end, and an air inlet connector is arranged in the air inlet end of the body pipe, and the air conditioner pipe with a built-in silencer further comprises a silencer pipe, the silencer pipe is built in a section of the body pipe, one end of the silencer pipe is connected with the air inlet connector, the other end of the silencer pipe is suspended in the inner cavity of the body pipe and is spaced apart from the air outlet end, and a plurality of rings of silencer sections are arranged on the outer wall of the silencer pipe, and each ring of silencer sections is arranged to protrude from the outer wall of the silencer pipe.

[0007] The air conditioner pipe with a built-in silencer, wherein the silencer pipe is made of PP (Polypropylene).

[0008] The air conditioner pipe with a built-in silencer, wherein a guide plate is arranged on the outer wall of the silencer pipe, and the guide plate is arranged in a spiral shape along the length direction of the silencer pipe.

[0009] The air conditioner pipe with a built-in silencer, wherein quick connectors are arranged between the two ends of the body pipe provided with the silencer pipe and the matched pipes.

[0010] The air conditioner pipe with a built-in silencer, wherein the quick connector comprises an inner plug and an outer sleeve, a connecting ring is arranged on the outer wall of the inner plug, a ring of connecting grooves is formed in the connecting ring, the outer sleeve is arranged in a barrel shape and a sleeve hole is formed in the bottom of the barrel, the hole opening of the sleeve hole is clamped into the connecting groove, meanwhile, the barrel wall of the outer sleeve is sleeved on one end of the inner plug, and the end of the body pipe provided with the silencer pipe is connected with the inner plug sleeved by the outer sleeve.

[0011] The air conditioner pipe with the built-in silencer further comprises a mounting frame, the mounting frame comprises a mounting portion and a connecting portion, the mounting portion is provided with a mounting hole, the connecting portion is in an integral structure with the mounting portion, the connecting portion comprises a first clamping portion and a second clamping portion, one end of the first clamping portion is connected with the mounting portion, the other end of the first clamping portion is connected with the second clamping portion, meanwhile, a clamping groove is arranged at the connecting position of the first clamping portion and the mounting portion, a clamping head matched with the clamping groove is arranged on the end of the second clamping portion away from the first clamping portion, and a plurality of clamping grooves are arranged on the opposite side of the first clamping portion and the second clamping portion.

[0012] The air conditioner pipe with the built-in silencer further comprises a mounting frame, the mounting frame comprises a mounting portion and a connecting portion, the mounting portion is provided with a mounting hole, the connecting portion is in an integral structure with the mounting portion, the connecting portion comprises a first clamping portion and a second clamping portion, one end of the first clamping portion is connected with the mounting portion, the other end of the first clamping portion is connected with the second clamping portion, meanwhile, a clamping groove is arranged at the connecting position of the first clamping portion and the mounting portion, a clamping head matched with the clamping groove is arranged on the end of the second clamping portion away from the first clamping portion, and a plurality of clamping grooves are arranged on the opposite side of the first clamping portion and the second clamping portion.

[0013] The air conditioner pipe with the built-in silencer further comprises a mounting frame, the mounting frame comprises a mounting portion and a connecting portion, the mounting portion is provided with a mounting hole, the connecting portion is in an integral structure with the mounting portion, the connecting portion comprises a first clamping portion and a second clamping portion, one end of the first clamping portion is connected with the mounting portion, the other end of the first clamping portion is connected with the second clamping portion, meanwhile, a clamping groove is arranged at the connecting position of the first clamping portion and the mounting portion, a clamping head matched with the clamping groove is arranged on the end of the second clamping portion away from the first clamping portion, and a plurality of clamping grooves are arranged on the opposite side of the first clamping portion and the second clamping portion.

[0014] The air conditioner pipe with the built-in silencer further comprises a mounting frame, the mounting frame comprises a mounting portion and a connecting portion, the mounting portion is provided with a mounting hole, the connecting portion is in an integral structure with the mounting portion, the connecting portion comprises a first clamping portion and a second clamping portion, one end of the first clamping portion is connected with the mounting portion, the other end of the first clamping portion is connected with the second clamping portion, meanwhile, a clamping groove is arranged at the connecting position of the first clamping portion and the mounting portion, a clamping head matched with the clamping groove is arranged on the end of the second clamping portion away from the first clamping portion, and a plurality of clamping grooves are arranged on the opposite side of the first clamping portion and the second clamping portion.

[0015] The air conditioner pipe with the built-in silencer further comprises a mounting frame, the mounting frame comprises a mounting portion and a connecting portion, the mounting portion is provided with a mounting hole, the connecting portion is in an integral structure with the mounting portion, the connecting portion comprises a first clamping portion and a second clamping portion, one end of the first clamping portion is connected with the mounting portion, the other end of the first clamping portion is connected with the second clamping portion, meanwhile, a clamping groove is arranged at the connecting position of the first clamping portion and the mounting portion, a clamping head matched with the clamping groove is arranged on the end of the second clamping portion away from the first clamping portion, and a plurality of clamping grooves are arranged on the opposite side of the first clamping portion and the second clamping portion. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural diagram of the embodiment of the air conditioner pipe with the built-in silencer.

[0017] Figure 2 Structure diagram of the body pipeline with the sound attenuation pipe of a preferred embodiment of the present application;

[0018] Figure 3 Structure diagram of the sound attenuation pipe of a preferred embodiment of the present application;

[0019] Figure 4 Structure diagram of the mounting rack of a preferred embodiment of the present application.

[0020] In the drawings: 1, body pipeline; 11, air inlet end; 12, air outlet end; 2, air inlet joint; 3, sound attenuation pipe; 31, sound attenuation section; 32, flow guide plate; 4, quick connector; 41, inner plug; 42, outer sleeve; 411, connecting ring; 5, mounting rack; 51, mounting portion; 52, connecting portion; 511, mounting hole; 521, first clamping portion; 522, second clamping portion; 523, clamping groove; 524, clamping head; 525, clamping slot; 526, cushion block; 5231, first protrusion; 5232, second protrusion; 5241, first recess; 5242, second recess; 5261, deformation groove. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the following embodiments are combined with the accompanying drawings to illustrate the present application. Figure 1 to the accompanying drawings Figure 4 The technical solutions of the present application are described in detail, but the following content is not a limitation of the present application.

[0022] Figure 1 Structure diagram of the air conditioner pipeline with the built-in sound attenuation device of an embodiment of the present application; Figure 2 Structure diagram of the body pipeline with the sound attenuation pipe of a preferred embodiment of the present application. As shown in Figure 1 and Figure 2 The built-in sound attenuation device of the air conditioner pipeline provided by the present embodiment includes a body pipeline 1 and a sound attenuation pipe 3. At this time, the two ends of the body pipeline 1 are respectively an air inlet end 11 and an air outlet end 12, which meet the use requirements of connecting with other pipelines in the air conditioning system and maintaining the flow of air.

[0023] And, the intake joint 2 is arranged in the intake end 11 of the body pipeline 1, so that when the airflow enters the body pipeline 1 from the intake end 11, the airflow enters through the intake joint 2. In addition, the sound attenuation pipe 3 is arranged in a section of the body pipeline 1, preferably, the sound attenuation pipe 3 is arranged along the length direction of the body pipeline 1 and coaxially arranged with the body pipeline 1, so that the long path sound attenuation is realized, and the sound attenuation effect is ensured. At the same time, one end of the sound attenuation pipe 3 is connected with the intake joint 2, so that the airflow entering the intake joint 2 can directly enter the sound attenuation pipe 3 and flow to the air outlet end 12 of the body pipeline 1 through the sound attenuation pipe 3. At this time, the other end of the sound attenuation pipe 3 is suspended in the pipe inner cavity of the body pipeline 1 and is arranged with a spacing between the sound attenuation pipe 3 and the air outlet end 12, so that the airflow flowing out of the sound attenuation pipe 3 flows from the smaller inner cavity of the sound attenuation pipe 3 to the larger inner cavity of the body pipeline 1, so that the change of the pipeline interface is realized, the acoustic impedance is changed, the reflected sound wave can interfere with the original sound wave, and the purpose of sound attenuation is achieved. And, a plurality of sound attenuation sections 31 are arranged on the outer wall of the sound attenuation pipe 3, and each sound attenuation section 31 is arranged protruding from the outer wall of the sound attenuation pipe 3, and a spacing is arranged between adjacent two sound attenuation sections 31. Through the plurality of sound attenuation sections 31, the inner cavity is changed multiple times, the reflection and scattering of sound waves are realized multiple times, the sound attenuation effect is further improved, and the airflow turbulence is also reduced. While realizing the noise reduction, the airflow velocity is ensured, the excessive increase of energy consumption is effectively avoided, the efficient operation of the air conditioning system is facilitated, and the performance of the air conditioning system is improved.

[0024] Specifically, the sound attenuation pipe 3 is made of PP (English: Polypropylene; Chinese: polypropylene), so that the sound attenuation pipe 3 has good plasticity and can adaptively bend according to the bending requirement of the body pipeline 1, so that the sound attenuation pipe 3 can be flexibly adapted to air conditioning pipelines of different scenes and different structures, and the customer demand can be better met.

[0025] Figure 3 The structure diagram of the sound attenuation pipe of the preferred embodiment of the utility model. As shown in Figure 2 and Figure 3 shown, the outer wall of the sound attenuation pipe 3 is further provided with a flow guide plate 32, at this time, the flow guide plate 32 is arranged in a spiral shape along the length direction of the sound attenuation pipe 3, so that when the airflow passes through the pipeline, the airflow can be guided through the spiral flow guide plate 32, the airflow turbulence is further reduced, the pressure loss is further avoided, and the energy consumption is further reduced.

[0026] More specifically, the two ends of the body pipeline 1 provided with the silencer pipe 3 are provided with quick connectors 4 between the matched pipelines, and the quick connectors are used to realize the quick disassembly and assembly of the body pipeline 1 provided with the silencer pipe 3 in the whole air conditioning system, which is convenient for assembly and subsequent maintenance and replacement, and the structure design is more reasonable.

[0027] More specifically, each quick connector 4 comprises an inner plug 41 and an outer sleeve 42. The inner plug 41 is a hollow pipe structure, and one end of the inner plug 41 is fixedly connected with the matched pipeline, and a connecting ring 411 is arranged on the outer wall of the end of the inner plug 41 fixedly connected with the matched pipeline, and preferably, the connecting ring 411 is an integral structure with the inner plug 41, which has higher structural strength and better connection reliability. In addition, a connecting groove is formed on the connecting ring 411, and the outer sleeve 42 is arranged in a barrel shape and is provided with a sleeve hole at the bottom of the barrel, and when the outer sleeve 42 is installed on the inner plug 41, the hole opening of the sleeve hole is clamped into the connecting groove, thereby realizing the stable installation of the outer sleeve 42 on the inner plug 41. At the same time, the barrel wall of the outer sleeve 42 is sleeved on the end of the inner plug 41 away from the matched pipeline, and the end of the body pipeline 1 provided with the silencer pipe 3 is connected with the inner plug 41 sleeved by the outer sleeve 42, so that the outer sleeve 42 can be sleeved on the outer side of the body pipeline 1 provided with the silencer pipe 3, and the outer side of the body pipeline 1 provided with the silencer pipe 3 is pressed tightly by extruding the outer sleeve 42, thereby realizing the quick and reliable connection of the body pipeline 1 provided with the silencer pipe 3 and the matched pipeline, and the structure design is more reasonable.

[0028] Figure 4 is a structural view of the mounting frame of a preferred embodiment of the present application. Figure 1 and Figure 4The air conditioner pipe further comprises a mounting rack 5, through which the air conditioner pipe is mounted on the vehicle body of the vehicle. At this time, the mounting rack 5 comprises a mounting portion 51 and a connecting portion 52, and a mounting hole 511 is formed in the mounting portion 51, through which a bolt or the like is passed to be connected. Preferably, a metal sleeve is arranged in the mounting hole 511, and the metal sleeve is coaxially arranged in the mounting hole 511. The metal sleeve increases the structural strength of the mounting hole 511 of the mounting portion 51, and improves the reliability of the mounting rack 5 after being mounted. In addition, the connecting portion 52 is integrally injection molded with the mounting portion 51, which is convenient to process and manufacture and has higher structural strength. Meanwhile, the connecting portion 52 comprises a first clamping portion 521 and a second clamping portion 522, and one end of the first clamping portion 521 is connected with the mounting portion 51, and the other end of the first clamping portion 521 is connected with the second clamping portion 522. Meanwhile, the second clamping portion 522 can be folded relative to the first clamping portion 521, so that the first clamping portion 521 and the second clamping portion 522 can be clamped relative to each other. In addition, a clamping groove 523 is arranged at the connection between the first clamping portion 521 and the mounting portion 51, and a clamping head 524 matched with the clamping groove 523 is arranged at the end of the second clamping portion 522 away from the first clamping portion 521. When the first clamping portion 521 is folded towards the first clamping portion 521 to be clamped, the clamping head 524 can be clamped into the clamping groove 523 to connect the ends of the first clamping portion 521 and the second clamping portion 522, maintain the state of the first clamping portion 521 and the second clamping portion 522, and thus ensure the stability of the structure of the mounting rack 5 after being mounted. In addition, a plurality of clamping grooves 525 are formed on the opposite sides of the first clamping portion 521 and the second clamping portion 522. When the first clamping portion 521 is provided with a semicircular clamping groove 525, the second clamping portion 522 is provided with another semicircular clamping groove 525 matched with the semicircular clamping groove 525. When the first clamping portion 521 and the second clamping portion 522 are clamped relative to each other, the corresponding two semicircular clamping grooves 525 form a circular clamping groove 525, and the main pipeline 1 and the pipeline connected therewith are clamped by the clamping groove 525, thereby meeting the mounting requirements of the air conditioner pipe. Preferably, the mounting rack 5 is made of rubber or plastic, which has good flexibility and can absorb the vibration generated by the air conditioner compressor and the like in the first time, reduce the vibration of the main pipeline 1, and further improve the noise reduction performance.

[0029] More specifically, the middle part of the inner wall of one side of the clamping groove 523 on the first clamping part 521 is provided with a first protrusion 5231 protruding into the clamping groove 523, so that the inner wall of the clamping groove 523 and located on both sides of the first protrusion 5231 can form a recess, so that the inner wall of one side of the clamping groove 523 has a plurality of uneven structures. And, the other side of the slot of the clamping groove 523 is provided with a second protrusion 5232 protruding into the clamping groove 523, that is, the second protrusion 5232 forms a limiting structure at the slot of the other side of the inner wall of the clamping groove 523, so that the slot of the clamping groove 523 is a necked structure. In addition, a first recess 5241 corresponding to the first protrusion 5231 is formed on one side of the clamping head 524, and a second recess 5242 corresponding to the second protrusion 5232 is formed on the other side of the clamping head 524, so that when the clamping head 524 is clamped into the clamping groove 523, the clamping head 524 can be stably clamped in the clamping groove 523 through the mutual fitting of the first protrusion 5231 and the first recess 5241 and the second protrusion 5232 and the second recess 5242, so that the first clamping part 521 and the second clamping part 522 can be more reliable and stable after being clamped with each other, ensuring the structural reliability of the mounting frame 5 after installation, avoiding the problem of accidental disconnection, not only facilitating the disassembly and assembly of the air conditioner pipe, but also ensuring the stability of the air conditioner pipe after installation.

[0030] More specifically, the mounting frame 5 is provided with a pad 526 in each clamping groove 525, at this time, the pad 526 is an annular structure with an opening, which facilitates the air conditioner pipe to enter the inner side of the pad 526 from the opening, so that when the air conditioner pipe is clamped by the clamping groove 525 to realize installation, the clamping groove 525 can tightly abut the outer wall of the air conditioner pipe through the pad 526, realizing the installation of the air conditioner pipe. And, a plurality of deformation grooves 5261 are formed on the inner wall of the pad 526, which form a tooth-shaped structure on the inner wall of the pad 526, and the deformation grooves 5261 are deformed by extruding the pad 526, thereby increasing the friction between the pad 526 and the air conditioner pipe, and further improving the installation reliability.

[0031] The air conditioner pipe with built-in silencer provided by the embodiment comprises a body pipe 1 and a silencer pipe 3; the silencer pipe 3 is built in the body pipe 1, one end of the silencer pipe 3 is connected with the air inlet joint 2 of the air inlet end 11 of the body pipe 1, the other end is arranged in suspension and is provided with a space between the air outlet end 12, so that when the airflow enters from the air inlet joint 2 and enters into the inner cavity of the body pipe 1 through the silencer pipe 3, the sound impedance can be changed by the change of the pipe section due to the airflow entering from the smaller inner cavity into the larger inner cavity, the reflection sound wave generated is interfered and offset with the original sound wave to realize silencing, meanwhile, a plurality of protruding silencer sections 31 are arranged on the outer side wall of the silencer pipe 3, the multiple changes of the inner cavity are realized through the silencer sections 31, the reflection and scattering of the sound wave can be realized multiple times, the silencing effect is further improved, the airflow turbulence is reduced, the airflow velocity is maintained, the energy consumption is reduced, meanwhile, no additional space and pipe arrangement are needed, the space is avoided to be additionally occupied, the pipe system is simplified, the post-maintenance is facilitated, the manufacturing and maintenance costs are reduced, and the use performance of the automobile air conditioner system is facilitated to be improved.

[0032] The above is only the preferred embodiment of the utility model, and does not limit the implementation and protection scope of the utility model, and those skilled in the art should realize that the obtained solutions of equivalent replacement and obvious changes by applying the contents of the utility model specification and drawings should be included in the protection scope of the utility model.

Claims

1. An air conditioner pipe with a built-in silencer, comprising a body pipe, two ends of the body pipe being an air inlet end and an air outlet end respectively, and an air inlet connector being arranged in the air inlet end of the body pipe, characterized in that, Also include: The muffler is made of PP material.

2. The air conditioner tube with a built-in silencer according to claim 1, wherein The outer wall of the muffler is provided with a guide plate, which is arranged in a spiral shape along the length direction of the muffler.

3. The air conditioner tube with a built-in silencer according to claim 1, wherein The two ends of the body pipeline provided with the muffler are provided with quick connectors between the matched pipelines.

4. The air conditioner tube with a built-in silencer according to claim 1, wherein The quick connector includes an inner plug and an outer sleeve, the outer wall of the inner plug is provided with a connecting ring, a connecting groove is formed in the connecting ring, the outer sleeve is barrel-shaped and is provided with a sleeve hole at the bottom, the hole opening of the sleeve hole is clamped into the connecting groove, and the barrel wall of the outer sleeve is sleeved outside one end of the inner plug.

5. The air conditioner tube with a built-in silencer according to claim 4, wherein Also include mounting bracket, the mounting bracket includes mounting part and connecting part, the mounting hole is formed in the mounting part, the connecting part and the mounting part are integrated structure, the connecting part includes first clamping part and second clamping part, one end of the first clamping part is connected with the mounting part, the other end of the first clamping part is connected with the second clamping part, at the same time, the connecting part of the first clamping part and the mounting part is provided with clamping groove, the second clamping part is provided with clamping head matched with the clamping groove away from one end connected with the first clamping part, and the first clamping part and the second clamping part are provided with a plurality of clamping grooves on the opposite side.

6. The air conditioner tube with a built-in silencer according to claim 1, wherein The middle part of the inner wall of one side of the clamping groove is provided with a first protruding block in the clamping groove, and the other side of the clamping groove is provided with a second protruding block in the clamping groove, one side of the clamping head is provided with a first recess corresponding to the first protruding block, and the other side of the clamping head is provided with a second recess corresponding to the second protruding block.

7. The air conditioner tube with a built-in silencer according to claim 6, wherein Also include pad, each clamping groove is provided with the pad, the pad is an open ring structure, and a plurality of deformation grooves are formed in the inner wall of the pad.

8. The air conditioner tube with a built-in silencer according to claim 6, wherein Also include pad, each clamping groove is provided with the pad, the pad is an open ring structure, and a plurality of deformation grooves are formed in the inner wall of the pad.

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