Noise reduction structure, air conditioner cabinet, air conditioning system and vehicle

Abstract

The application relates to a noise reduction structure, an air conditioner box, an air conditioner system and a vehicle. The noise reduction structure comprises a component, the component has a first outer surface and a plurality of mutually independent channels, and the lengths of any two channels are different. A plurality of through holes are arranged on the first outer surface, the plurality of through holes correspond to the plurality of channels one by one, and each through hole is in communication with one end of the channel corresponding thereto. The application sets the plurality of channels with different lengths, so that the noise reduction structure can reduce noise in a plurality of frequency bands, thereby improving the noise reduction range of the noise reduction structure. In this way, the noise in the passenger compartment can be reduced, and the riding comfort of the driver and the passenger can be improved.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and in particular to a noise reduction structure, an air conditioning housing, an air conditioning system, and a vehicle. Background Technology

[0002] To enhance passenger comfort, automobiles are equipped with an air conditioning system. Depending on the needs of the occupants, the air conditioning system regulates the air inside the vehicle through modes such as cooling, heating, and dehumidification. Air enters the air ducts within the air conditioning unit (also known as the air duct assembly) through its vents, is processed by air handling modules (such as filters, heating modules, and cooling modules), and is then delivered to the passenger compartment through the air outlets of the air conditioning unit.

[0003] Because the air conditioning unit needs to be adapted to the available space inside the car, the air duct structure is irregular, with bends, contractions, or expansions. As a result, when airflow moves within the duct, turbulence is generated due to the structural changes, which produces noise and reduces the comfort of the passengers. Summary of the Invention

[0004] This application provides a noise reduction structure that can reduce airflow noise, thereby at least solving the above-mentioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, a noise reduction structure is provided, the noise reduction structure including a component having a first outer surface and a plurality of independent channels, wherein the lengths of any two channels are not equal; wherein a plurality of through holes are provided on the first outer surface, the plurality of through holes corresponding one-to-one with the plurality of channels, and each through hole is connected to one end of the corresponding channel.

[0006] Optionally, multiple channels are arranged sequentially along a first direction, which is parallel to the first outer surface.

[0007] Optionally, at least one passage may meander.

[0008] Alternatively, the channel may meander along the first outer surface.

[0009] Optionally, the end of each channel furthest from its corresponding through hole is a closed end, and in two adjacent channels, the closed end of one channel is positioned close to the through hole of the other channel.

[0010] Optionally, the noise reduction structure also includes multiple fillers, each corresponding to a different channel. The fillers are placed inside their respective channels and positioned near the through holes of their corresponding channels. The fillers are made of porous material.

[0011] Optionally, the filler has a circumferential surface, a portion of which is disposed opposite to the through hole, and another portion of which is in contact with the inner wall of the channel.

[0012] Optionally, the component includes a housing and multiple partitions; the housing has an inner cavity and a first outer surface; the multiple partitions are disposed in the inner cavity and connected to the inner wall of the housing, and the multiple partitions divide the inner cavity into multiple channels.

[0013] According to a second aspect of this application, an air conditioning housing is provided, the air conditioning housing including an outer shell and the aforementioned noise reduction structure; the outer shell has an air inlet, an air outlet and an air duct, the two ends of the air duct being connected to the air inlet and the air outlet respectively; a first outer surface is connected to the outer shell, and a through hole is connected to the air duct.

[0014] Optionally, the noise reduction structure is disposed on the outer surface of the housing, and the end of the through hole away from the channel extends toward the air duct to penetrate one side of the housing.

[0015] Optionally, the first outer surface is integrally connected to the housing.

[0016] According to a third aspect of this application, an air conditioning system is provided, the air conditioning system including the aforementioned air conditioning unit.

[0017] According to a third aspect of this application, a vehicle is provided that includes the aforementioned air conditioning system.

[0018] In the noise reduction structure of this application embodiment, by setting multiple channels of varying lengths, the noise reduction structure can reduce noise across multiple frequency bands, thereby increasing its noise reduction range. This reduces cabin noise and improves passenger comfort.

[0019] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0022] Figure 1 This is a schematic diagram of the noise reduction structure provided in an exemplary embodiment of this disclosure;

[0023] Figure 2 This is an internal cross-sectional view of the noise reduction structure provided in an exemplary embodiment of this disclosure;

[0024] Figure 3 This is a schematic diagram of the sound wave path within the channel provided in an exemplary embodiment of this disclosure;

[0025] Figure 4 This is an internal cross-sectional view of another noise reduction structure provided in an exemplary embodiment of this disclosure;

[0026] Figure 5 This is a schematic diagram illustrating the fit between the filler and the channel provided in an exemplary embodiment of this disclosure;

[0027] Figure 6 This is a schematic diagram of the structure of the air conditioning unit provided in an exemplary embodiment of this disclosure;

[0028] Figure 7 This is a partial cross-sectional view of an air conditioning production line provided in an exemplary embodiment of this disclosure;

[0029] Figure 8 This is a sound absorption comparison curve provided in an exemplary embodiment of this disclosure;

[0030] Figure 9 This is a sound absorption curve provided in an exemplary embodiment of this disclosure;

[0031] Figure 10 This is a frequency-sound pressure level analysis diagram provided in an exemplary embodiment of this disclosure.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100-Noise Reduction Structure;

[0034] 11-Component; 111-First outer surface; 112-Channel; 113-Through hole; 114-Closed end; 115-Shell; 116-Partition;

[0035] 12-filler; 121-circumferential surface;

[0036] 200-Air conditioner housing; 21-Outer shell; 211-Air inlet; 212-Air outlet; 213-Air duct. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0038] The following combination Figures 1 to 10The present application provides a detailed description of a noise reduction structure 100, an air conditioning unit 200, an air conditioning system, and a vehicle, as provided in the embodiments of this application.

[0039] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the noise reduction structure 100 provided in an exemplary embodiment of this disclosure. Figure 2 This is an internal cross-sectional view of the noise reduction structure 100 provided in an exemplary embodiment of this disclosure. In a first aspect, embodiments of this application provide a noise reduction structure 100. The noise reduction structure 100 includes a component 11. The component 11 has a first outer surface 111 and a plurality of independent channels 112. The lengths of any two channels 112 are unequal. A plurality of through holes 113 are provided on the first outer surface 111. Each of the multiple through holes 113 corresponds one-to-one with a plurality of channels 112. Each through hole 113 communicates with one end of its corresponding channel 112.

[0040] It can be understood that the end of channel 112 away from the through hole 113 connected to it is a closed end 114, and the closed end 114 is a hard boundary.

[0041] It is understandable that when a sound wave enters the interior of channel 112 through the through-hole 113, it propagates along the extension direction of channel 112 and is reflected upon encountering the closed end 114. The reflected sound wave and the sound wave entering through the through-hole 113 undergo destructive interference due to their phase difference, thereby dissipating the energy of the sound wave and achieving the purpose of noise reduction. Figure 3 As shown, Figure 3 This is a schematic diagram of the acoustic wave path within channel 112 provided in an exemplary embodiment of this disclosure.

[0042] It can be understood that the length of channel 112 is one-quarter of the wavelength of the target noise in the noise reduction structure 100; therefore, channel 112 can be called a quarter-wavelength tube. For example, when the noise reduction structure 100 is used to reduce target noise with a frequency f of 149Hz, and the ambient temperature is assumed to be 20℃, the corresponding sound velocity c is 343m / s, then the wavelength of the target noise λ = c / f = 2.3m. When the length of channel 112 is one-quarter of the wavelength λ of the target noise, the sound wave reflected from the closed end 114 is 180° out of phase with the sound wave entering from the through hole 113. At this time, the destructive interference effect of the round-trip sound waves is good.

[0043] Since the lengths of the multiple channels 112 are different, noise reduction can be achieved for noise of various frequencies, thereby improving the noise reduction effect of the noise reduction structure 100.

[0044] Specifically, the wavelength of the target noise is λ, and the number of channels 112 is N. The lengths of the N channels 112, from smallest to largest, are L1, L1, ..., LN. Correspondingly, 4L1≤λ≤LN.

[0045] In this embodiment, by providing multiple channels 112 of varying lengths, the noise reduction structure 100 can reduce noise across multiple frequency bands, thereby increasing its noise reduction range. This reduces cabin noise and improves passenger comfort.

[0046] Meanwhile, compared to other noise reduction methods (e.g., resonant cavities), the noise reduction structure 100 provided in this embodiment is less susceptible to airflow excitation, thus reducing the likelihood of whistling sounds. Furthermore, this noise reduction method does not increase sidelobe noise, resulting in excellent noise reduction performance.

[0047] In addition, the noise reduction structure provided in this embodiment is simple in structure, is an integral unit, has strong integrity, and is structurally reliable.

[0048] Please see Figure 2 In some embodiments, multiple channels 112 are arranged sequentially along a first direction, which is parallel to the first outer surface 111. This allows the channels 112 to be arranged in a regular manner, which helps to reduce manufacturing difficulty and thus improve manufacturing efficiency.

[0049] It is understandable that the first direction can be a straight line, or a clockwise or counterclockwise direction. When the first outer surface 111 is a plane, the first direction can be the direction of any straight line on the first outer surface 111, or a clockwise or counterclockwise direction on the plane. When the first outer surface 111 is a curved surface, the first direction can be the direction of the generatrix of the curved surface, or the direction of the perimeter of the curved surface.

[0050] Please see Figure 2 In some embodiments, at least one channel 112 extends in a meandering manner. In this way, when the length of the channel 112 is large, the length dimension of the space occupied by the channel 112 can be shortened, thereby improving the compactness of the channel 112 layout structure.

[0051] In addition, extending the channel 112 in a meandering manner can result in a greater variation in the cross-section of the channel 112, which can cause the sound waves to be consumed by multiple reflections and interferences when propagating in the meandering channel 112.

[0052] Please see Figure 2 In some embodiments, the channel 112 extends meanderingly along the first outer surface 111.

[0053] It is understood that the meandering direction of the channel 112 can be either along or away from the first outer surface 111. When it extends away from the first outer surface 111, the noise reduction structure 100 has a larger dimension in that direction. This results in a larger radial dimension of the ventilation ducts in ventilation equipment such as air conditioners when the noise reduction structure 100 is applied, which is not conducive to installation.

[0054] Based on this, in this embodiment, by defining the channel 112 to meander along the first outer surface 111, the channel 112 is arranged to wrap around the first outer surface 111, thereby reducing the size of the noise reduction structure 100 in the direction away from the first outer surface 111. When the noise reduction structure 100 is applied to ventilation equipment such as air conditioners, the radial size of the ventilation duct of these equipment can be controlled, thereby improving the ease of installation.

[0055] Please see Figure 2 In some embodiments, the end of each channel 112 furthest from its corresponding through-hole 113 is a closed end 114. In two adjacent channels 112, the closed end 114 of one channel 112 is positioned close to the through-hole 113 of the other channel 112. This ensures that the layout of each channel 112 is consistent, thereby reducing the design and manufacturing difficulty of the noise reduction structure 100, and thus avoiding production errors, thereby improving production efficiency.

[0056] Please see Figure 4 , Figure 4 This is an internal cross-sectional view of another noise reduction structure 100 provided in an exemplary embodiment of this disclosure. In some embodiments, the noise reduction structure 100 further includes a plurality of fillers 12. The plurality of fillers 12 correspond one-to-one with a plurality of channels 112. The filler 12 is disposed within the corresponding channel 112 and is disposed near the through hole 113 of the corresponding channel 112. The filler 12 is a porous material.

[0057] It can be understood that the filler 12 is a skeletal structure with a large number of densely packed tiny voids. These tiny voids may be interconnected, or they may be partially connected and partially disconnected. Sound is easily lost when propagating in this porous structure, thus achieving the purpose of noise reduction.

[0058] For example, the filler 12 may be a sponge, polyester fiber cotton, melamine foam, aerogel, etc.

[0059] It is understandable that the dimensions of each filler 12 may be the same or different.

[0060] It is understood that the density of the filler 12 is lower than that of the component 11. Correspondingly, the acoustic resistance of the filler 12 is lower than that of the component 11. That is, the filler 12 has good sound transmission, which makes it easy for sound waves to pass through the porous material and enter the channel 112.

[0061] In this embodiment, by providing the filler 12, the high resistance of the filler 12 can be used to generate a better damping effect, thereby improving the sidelobe effect.

[0062] In addition, by providing a filler 12 at the connection point, the high flow resistance (i.e., resistance) of the porous material can be used to effectively prevent airflow from entering the channel 112 and generating eddies, thereby effectively suppressing the occurrence of whistling sounds.

[0063] It is understandable that in acoustics, resistivity and acoustic impedance are two important concepts describing the sound wave impediment effect of a muffler. Resistivity refers to the frictional resistance and viscous forces of the internal structure, that is, its ability to convert sound energy into heat energy and dissipate it. Acoustic impedance refers to the sound wave impediment effect achieved mainly through reflection, resonance, interference, and superposition generated by its internal geometry.

[0064] Please see Figure 5 , Figure 5 This is a schematic diagram illustrating the mating of the filler 12 and the channel 112 provided in an exemplary embodiment of this disclosure. In some embodiments, the filler 12 has a circumferential surface 121. A portion of the circumferential surface 121 is disposed opposite to the through hole 113, and another portion of the circumferential surface 121 contacts the inner wall of the channel 112. In this way, the area of ​​the mating surface between the filler 12 and the through hole can be increased, thereby improving the positional stability of the filler 12.

[0065] Specifically, the porous material can be snapped into the channel 112 or glued into the channel 112.

[0066] Please see Figure 2 In some embodiments, component 11 includes a housing 115 and a plurality of partitions 116. The housing 115 has an inner cavity and a first outer surface 111. The plurality of partitions 116 are disposed in the inner cavity and connected to the inner wall of the housing 115. The plurality of partitions 116 divide the inner cavity into a plurality of channels 112. In this way, by defining a plurality of channels 112 by a plurality of partitions 116, the forming method of the channels 112 can be simplified, thereby reducing the manufacturing difficulty of component 11 and improving the manufacturing efficiency of component 11.

[0067] Please see Figure 6 and Figure 7 , Figure 6 This is a structural schematic diagram of the air conditioning unit 200 provided in an exemplary embodiment of this disclosure. Figure 7This is a partial cross-sectional view of an air conditioning unit provided in an exemplary embodiment of this disclosure. In a second aspect, embodiments of this application provide an air conditioning housing 200, which includes an outer shell 21 and the aforementioned noise reduction structure 100. The outer shell 21 has an air inlet 211, an air outlet 212, and an air duct 213. The two ends of the air duct 213 are respectively connected to the air inlet 211 and the air outlet 212. A first outer surface 111 is connected to the outer shell 21. A through hole 113 communicates with the air duct 213.

[0068] It is understood that the interior of the outer casing 21 can also be equipped with components such as evaporators, condensers, pipes, valves, and heaters. The installation positions of these components can be arranged according to the available installation space in the air conditioning unit 200.

[0069] It is understandable that there can be multiple air outlets 212, and the position of the air outlets 212 can be set according to the required airflow location.

[0070] The air conditioning unit 200 may include one or more noise reduction structures 100 as provided in some embodiments of this application. The specific installation location of the noise reduction structure 100 can be determined based on the noise simulation analysis results of the air conditioning unit 200. The noise reduction structure 100 is installed in noisy areas of the air conditioning unit 200, for example, on the air intake side of the outer casing 21 where the blower is installed.

[0071] It is understood that the air conditioning unit 200 includes the aforementioned noise reduction structure 100. The air conditioning unit 200 has all the beneficial effects of the aforementioned noise reduction structure 100, which will not be elaborated further in this disclosure.

[0072] Please see Figure 6 In some embodiments, the noise reduction structure 100 is disposed on the outer surface of the housing 21. The end of the through hole 113 away from the channel 112 extends toward the air duct 213 to penetrate one side of the housing 21. In this way, the difficulty of installing the noise reduction structure 100 on the housing 21 can be reduced, allowing for more operational space when installing the noise reduction structure 100 and improving the efficiency of installing the noise reduction structure 100 on the housing 21.

[0073] Please see Figure 7 In some embodiments, the first outer surface 111 is integrally connected to the outer casing 21. In this way, the casing 115 defining the air duct 213 and the channel 112 is a single component, thereby reducing the volume and material usage of the air conditioning unit 200, and thus reducing the cost of the air conditioning unit 200.

[0074] According to a third aspect of this application, an air conditioning system is provided, the air conditioning system including the aforementioned air conditioning unit 200.

[0075] For example, if the target noise of an air conditioning system is noise with a frequency of around 149Hz, then the noise reduction structure 100 is selected to have three channels 112, each with lengths of 523mm, 566mm, and 627mm. In this way, the noise reduction structure 100 can cover noise at and around 149Hz.

[0076] It is understood that the air conditioning system includes the aforementioned air conditioning unit 200, and the air conditioning system has all the beneficial effects of the aforementioned air conditioning unit 200, which will not be repeated here.

[0077] According to a third aspect of this application, a vehicle is provided that includes the aforementioned air conditioning system.

[0078] The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this disclosure does not make any specific restrictions.

[0079] It is understood that the vehicle includes the aforementioned air conditioning system and has all the beneficial effects of the aforementioned air conditioning system, which will not be elaborated upon here.

[0080] The technical solution and effects of this application will be described in detail below through specific embodiments. These embodiments are merely some embodiments of this application and are not intended to limit the scope of this application. This embodiment aims to examine the noise reduction capability of the noise reduction structure 100.

[0081] I. Noise Reduction Analysis Explanation

[0082] (I) Test Subjects

[0083] Test object A: A noise reduction structure 100 with a channel 112 of length 1;

[0084] Test object B: A noise reduction structure 100 with a channel 112 of length 2;

[0085] Test object C: a noise reduction structure 100 with a channel 112 of length 3;

[0086] Test object D: A noise reduction structure 100 with three channels 112 of lengths 1, 2 and 3 respectively.

[0087] (II) Test Analysis

[0088] The models of test objects A, B, C, and D are input into acoustic simulation software (e.g., ANSYS ACTRAN, COMSOL Multiphysics) for simulation analysis, and the results are as follows: Figure 8 The results shown Figure 8This is a sound absorption comparison curve provided in an exemplary embodiment of this disclosure. Figure 8 In the diagram, the horizontal axis represents the sound wave frequency in Hz, and the vertical axis represents the sound absorption coefficient. It can be seen that test object A (i.e., parameter 1) is... Figure 8 The parameters shown by the red dashed line in the middle have a good sound absorption effect on sound waves of 155Hz to 170Hz. Test object B (i.e., parameter 2, is...) Figure 8 The parameters shown by the green dashed line have a good sound absorption effect on sound waves of 145Hz to 155Hz. Test object C (i.e., parameter 3) is... Figure 8 The parameters shown by the purple dashed line in the middle) have a good sound absorption effect on sound waves of 130Hz to 145Hz, while the test object D (i.e., coupling, which combines parameters 1, 2, and 3 of channel 112) has a good sound absorption effect. Figure 8 The parameters shown by the solid black line in the middle have good sound absorption effects for sound waves in the range of 130Hz to 170Hz. Obviously, the sound absorption bandwidth (130Hz to 170Hz) of the noise reduction structure 100 formed by the combination of various channels 112 with different parameters represented by test object D is better than that of the other three single-parameter channel 112 structures, and the noise reduction amplitude (i.e., sound absorption coefficient) is also greater than that of the other three single-parameter channel 112 structures.

[0089] II. Noise Reduction Analysis Explanation

[0090] (I) Test Subjects

[0091] Test object E: A noise reduction structure 100 with three channels 112, wherein the three channels 112 are arranged sequentially along a first direction, and each channel 112 is arranged meandering along the first outer surface 111. In two adjacent channels 112, the closed end 114 of one channel 112 is located close to the through hole 113 of the other channel 112.

[0092] (II) Test Analysis

[0093] The model of test object E is input into acoustic simulation software for simulation analysis, and the results are as follows: Figure 9 The results shown Figure 9 This is a sound absorption curve provided in an exemplary embodiment of this disclosure. Figure 9 In the diagram, the horizontal axis represents the sound wave frequency in Hz, and the vertical axis represents the sound absorption coefficient. Figure 9 It can be seen that test object E can not only reduce noise at the corresponding wavelength using a quarter-wavelength tube, but also has a high sound absorption effect on noise in other frequency bands. For example, Figure 9 In addition to sound waves in the 130Hz-170Hz range, it also has good sound absorption effects on some sound waves in the 400Hz-500Hz, 700Hz-800Hz, and 900Hz-2500Hz ranges.

[0094] III. Noise Reduction Analysis Explanation

[0095] (I) Test Subjects

[0096] Test object F: An air conditioning system without the noise reduction structure 100 provided in the embodiments of this application;

[0097] Test object G: An air conditioning system configured with the noise reduction structure 100 provided in the embodiments of this application.

[0098] (II) Test Analysis

[0099] The models of test objects F and G are input into acoustic simulation software for simulation analysis, and the results are as follows: Figure 10 The results shown Figure 10 This is a frequency-sound pressure level analysis diagram provided in an exemplary embodiment of this disclosure. Figure 10 In the diagram, the horizontal axis represents the sound wave frequency in Hz, and the vertical axis represents the sound absorption coefficient. The original state corresponds to test object F, and the sound-absorbing structure plus the outlet resistive material corresponds to test object G. Figure 10 It is understood that the air conditioning system with the noise reduction structure 100 provided in the embodiments of this application has a good sound absorption effect on sound waves of 130Hz to 170Hz.

[0100] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0101] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0102] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0103] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A noise reduction structure (100), characterized in that, The component (11) includes a first outer surface (111) and a plurality of independent channels (112), wherein the lengths of any two channels (112) are not equal. The first outer surface (111) is provided with a plurality of through holes (113), and the plurality of through holes (113) correspond one-to-one with the plurality of channels (112), and each of the through holes (113) is connected to one end of the corresponding channel (112).

2. The noise reduction structure (100) according to claim 1, characterized in that, Along a first direction, a plurality of channels (112) are arranged sequentially, the first direction being parallel to the first outer surface (111).

3. The noise reduction structure (100) according to claim 2, characterized in that, At least one of the channels (112) extends in a meandering manner.

4. The noise reduction structure (100) according to claim 3, characterized in that, The channel (112) extends meanderingly along the first outer surface (111).

5. The noise reduction structure (100) according to claim 4, characterized in that, Each channel (112) has a closed end (114) away from the corresponding through hole (113). In two adjacent channels (112), the closed end (114) of one channel (112) is located close to the through hole (113) of the other channel (112).

6. The noise reduction structure (100) according to any one of claims 1-5, characterized in that, The noise reduction structure (100) further includes a plurality of fillers (12), each of which corresponds to a plurality of channels (112). The filler (12) is disposed in the corresponding channel (112) and is disposed close to the through hole (113) of the corresponding channel (112). The filler (12) is a porous material.

7. The noise reduction structure (100) according to claim 6, characterized in that, The filler (12) has a circumferential surface (121), a portion of which is disposed opposite to the through hole (113), and another portion of which is in contact with the inner wall of the channel (112).

8. The noise reduction structure (100) according to any one of claims 1-5, characterized in that, The component (11) includes: A housing (115) having an inner cavity and the first outer surface (111); and Multiple partitions (116) are disposed in the inner cavity and connected to the inner wall of the housing (115), and the multiple partitions (116) divide the inner cavity into multiple channels (112).

9. An air conditioner housing (200), characterized in that, include: The outer casing (21) has an air inlet (211), an air outlet (212), and an air duct (213), the two ends of which are respectively connected to the air inlet (211) and the air outlet (212); and, The noise reduction structure (100) as described in any one of claims 1-8, wherein the first outer surface (111) is connected to the outer shell (21), and the through hole (113) is connected to the air duct (213).

10. The air conditioning unit (200) according to claim 9, characterized in that, The noise reduction structure (100) is disposed on the outer surface of the housing (21), and the end of the through hole (113) away from the channel (112) extends toward the air duct (213) to penetrate one side of the housing (21).

11. The air conditioning unit (200) according to claim 10, characterized in that, The first outer surface (111) is integrally connected with the outer shell (21).

12. An air conditioning system, characterized in that, Includes the air conditioning unit (200) as described in claims 9-11.

13. A vehicle, characterized in that, Including the air conditioning system as described in claim 12.

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