Silencing structure, compressor and air conditioner

Abstract

The invention provides a noise elimination structure, a compressor and an air conditioner, the noise elimination structure comprises a first noise elimination component which is detachably arranged on a mounting base, and at least part of the first noise elimination component is used for defining a first cavity; at least part of the second silencing component is arranged on the first silencing component in a sleeving mode, and a second cavity is formed by the second silencing component and at least part of the outer wall face of the first silencing component; wherein at least part of the first silencing part is provided with a plurality of silencing holes, so that the first cavity and the second cavity are communicated through the silencing holes, the silencing frequency band of the first cavity is different from that of the second cavity, the first cavity is communicated with the air outlet of the mounting base, and the second cavity is communicated with the air outlet of the mounting base. At least part of gas flowing out of the mounting foundation flows to the first cavity, the silencing holes and the second cavity for vibration reduction; the problems that in the prior art, compressor micro-perforation can only reduce noise in the same frequency band, and full-frequency-band noise control from low frequency to high frequency cannot be effectively achieved are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressors, in particular to a sound-absorbing structure, a compressor and an air conditioner. BACKGROUND

[0002] As an indispensable power source in modern industry and daily life, compressors are widely used in fields such as air conditioning, refrigeration, automobile engine starting systems, etc. With the development of technology and the increasing demand for a quiet environment, the noise problem caused by compressors has attracted widespread attention. High-frequency noise, in particular, not only affects people's quality of life and health, but also may have adverse effects on the stable operation of the compressor and the surrounding equipment. Therefore, designing an efficient compressor sound-absorbing structure, especially a technology that can effectively control high-frequency noise, has become a research hotspot and development trend in the industry. In recent years, micro-perforated plate technology has been favored due to its significant effect on high-frequency noise suppression. Micro-perforated plate is composed of one or more layers of materials with micro-apertures, which are much smaller than the wavelength of sound waves. When sound waves penetrate these micro-holes, the sound energy is converted into heat energy within the holes, thereby significantly reducing noise intensity.

[0003] Although micro-perforated plates have shown great potential in high-frequency noise control, their application in the actual operation of compressors still faces a series of challenges. First, traditional micro-perforated sound absorbers often have a large processing area, requiring highly precise micro-hole arrays, which undoubtedly increases manufacturing difficulty and cost. Second, as the main exhaust path, micro-perforations may affect the exhaust performance of the compressor, especially at high speeds, the blocking effect of micro-holes may cause a decrease in exhaust efficiency, thereby affecting the overall performance of the compressor. Third, to solve the problem of exhaust efficiency, some designs add additional exhaust channels, but this results in the destruction of the Helmholtz resonance effect of the micro-perforated plate and the back cavity, reducing the noise reduction effect of the sound absorber at high frequencies. In addition, the micro-perforated sound absorber in the prior art can only reduce noise in the same frequency band, and cannot effectively achieve full-band noise control from low to high frequencies. SUMMARY

[0004] The main purpose of the present application is to provide a sound-absorbing structure, a compressor and an air conditioner, to solve the problem that the micro-perforated plate of the compressor in the prior art can only reduce noise in the same frequency band, and cannot effectively achieve full-band noise control from low to high frequencies.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a sound-absorbing structure is provided, comprising a first sound-absorbing component, which is detachably arranged on a mounting base, at least part of the first sound-absorbing component being used to enclose a first cavity;

[0006] The second muffling component is at least partially sleeved on the first muffling component and forms a second cavity with at least part of the outer wall surface of the first muffling component.

[0007] The first muffling component is provided with a plurality of muffling holes, the first cavity and the second cavity are communicated through the plurality of muffling holes, the sound reduction frequency range of the first cavity is different from that of the second cavity, and the first cavity is communicated with the gas outlet of the mounting base to make at least part of the gas flowing out of the mounting base flow through the first cavity, the muffling holes and the second cavity to be damped.

[0008] Further, the second cavity is a resonance cavity, and the second cavity is communicated with the outside through the plurality of muffling holes; and / or,

[0009] The first cavity has a discharge outlet communicated with the outside, and the plurality of muffling holes are arranged on the side wall for enclosing the discharge outlet.

[0010] Further, the mounting base comprises a mounting portion;

[0011] The first muffling component comprises a first annular portion, at least part of the first annular portion is sleeved on the periphery of the mounting portion, the plurality of muffling holes are arranged on the first annular portion, and each muffling hole is arranged through the wall thickness of the first annular portion in the radial direction; and / or,

[0012] The first muffling component is provided with a first mounting position, the mounting base is provided with a second mounting position, the muffling structure further comprises a mounting component which is arranged in the second mounting position in a penetrating manner, and the mounting component is arranged in one-to-one correspondence with the second mounting position to fix the first muffling component on the mounting base through the mounting component.

[0013] Further, the first muffling component further comprises a second annular portion, and the distance between the inner wall of the second annular portion and the central axis of the first annular portion gradually increases in the direction away from the central axis of the first annular portion.

[0014] Further, the second muffling component comprises an annular contact portion and an annular muffling portion, the end surface of the annular contact portion is in contact with at least part of the outer wall surface of the first muffling component, and the annular muffling portion is used to be connected with the mounting base.

[0015] Further, the distance between the inner wall surface of the annular muffling portion and the outer wall surface of the mounting base gradually increases in the direction away from the central axis of the annular contact portion; and / or,

[0016] The annular muffling portion is provided with a third mounting position, the third mounting position is arranged in one-to-one correspondence with the first mounting position of the first muffling component to fix the second muffling component on the first muffling component through the mounting component of the muffling structure; and / or,

[0017] The annular contact portion and the annular muffling portion are integrally formed.

[0018] Further, the first muffling component comprises a first body part, and a third annular part detachably arranged on the first body part;

[0019] The second muffling component is circular annular, and the annular contact end of the second muffling component is detachably arranged with the outer wall surface of the third annular part;

[0020] The third annular part is at least partially sleeved on the mounting base, the muffling hole is arranged on the third annular part, and the first body part, the third annular part and the second muffling component jointly form the second cavity.

[0021] Further, the muffling hole is arranged on at least part of the upper surface of the first muffling component away from the mounting base.

[0022] According to another aspect of the present application, a compressor is provided, comprising the muffling structure as described above.

[0023] According to another aspect of the present application, an air conditioner is provided, comprising the compressor as described above.

[0024] By the cooperation of the first muffling component and the second muffling component, the present application realizes the communication between the first cavity and the second cavity, and the two cavities have different noise reduction frequency bands. This means that the muffling structure can absorb and weaken noise in a wider frequency range, achieving the effect of wideband noise reduction. Sound waves are initially reduced in the first cavity, then enter the second cavity through the muffling hole for further processing of medium and high frequency noise. This double-layer noise reduction design covers the entire noise spectrum generated during the operation of the compressor, significantly improving the noise reduction performance. The arrangement of the muffling hole enables the first cavity and the second cavity to be effectively communicated. When the gas flows through the muffling hole, its flow rate and direction will change, generating vortex and disturbance, which helps to convert sound wave energy into kinetic energy loss of fluid, thereby achieving the purpose of vibration reduction.

[0025] The detachable design of the first muffling component and the second muffling component, and the independent adjustment capability of the first cavity and the second cavity, significantly improve the system adaptability and flexibility of the muffling structure. In the face of different compressor models, operating conditions or noise environments, the muffling structure can be optimized by adjusting the connection mode between components or replacing specific components, without the need to replace the entire muffling system, reducing the cost and time of system adjustment. The detachable nature of the muffling component simplifies the maintenance process. When the noise reduction performance of the first cavity or the second cavity decreases, the operator can only replace the corresponding component without affecting the operation of the entire system. BRIEF DESCRIPTION OF DRAWINGS

[0026] The drawings accompanying the specification of this application serve to provide further understanding of the present application, the illustrative embodiments of the present application, and its description, and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 An overall structural schematic diagram of the muffling structure and the connecting flange of the embodiment of the present application is shown;

[0028] Figure 2 A sectional view of the muffling structure of the embodiment of the present application is shown;

[0029] Figure 3 A top view of the embodiment of the present application is shown;

[0030] Figure 4 A sectional view of another scheme of the embodiment of the present application is shown;

[0031] Figure 5 A top view of another scheme of the embodiment of the present application is shown.

[0032] Among the above drawings, the following reference signs are included:

[0033] 1, first muffling component; 101, first annular portion; 102, second annular portion; 103, first mounting position; 104, first body portion; 105, third annular portion; 106, upper surface;

[0034] 2, mounting base; 201, mounting portion; 202, second mounting position;

[0035] 3, first cavity;

[0036] 4, second muffling component; 401, annular contact portion; 402, annular muffling portion; 403, third mounting position;

[0037] 5, second cavity; 6, muffling hole; 7, mounting component. DETAILED DESCRIPTION

[0038] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] Compressors are indispensable power sources in modern industry and daily life, widely used in air conditioning, refrigeration, automobile engine starting systems and other fields. With the development of technology and the increasing demand for a quiet environment, the noise problem caused by compressors has attracted widespread attention. High-frequency noise, in particular, not only affects people's quality of life and health, but also can have an adverse impact on the stable operation of the compressor and surrounding equipment. Therefore, designing an efficient compressor noise reduction structure, especially a technology that can effectively control high-frequency noise, has become a research hotspot and development trend in the industry. In recent years, micro-perforated plate technology has been favored due to its significant effect in high-frequency noise suppression. Micro-perforated plate is composed of one or more layers of materials with micro-apertures, which are much smaller than the wavelength of sound waves. When sound waves penetrate these micro-holes, the sound energy is converted into heat energy within the holes, thereby significantly reducing noise intensity.

[0040] Although micro-perforated plates have shown great potential in high-frequency noise control, their application in the actual operation of compressors still faces a series of challenges. First, traditional micro-perforated silencers often have a large processing area, requiring highly precise micro-hole arrays, which undoubtedly increases manufacturing difficulty and cost. Second, as the main exhaust path, micro-perforations can affect the exhaust performance of the compressor, especially at high speeds, the blocking effect of micro-holes can lead to reduced exhaust efficiency, thereby affecting the overall performance of the compressor. Third, to address the issue of exhaust efficiency, some designs add additional exhaust channels, but this results in the destruction of the Helmholtz resonance effect between the micro-perforated plate and the back cavity, reducing the noise reduction effect of the silencer at high frequencies. In addition, the existing micro-perforated silencers can only reduce noise in the same frequency band, and cannot effectively achieve full-band noise control from low to high frequencies.

[0041] Therefore, the purpose of the present application is to provide a noise reduction structure, a compressor and an air conditioner to solve the above problems.

[0042] Embodiment 1

[0043] The present application first provides a noise reduction structure, as shown in Figures 1 to 3 The noise reduction structure includes a first noise reduction component 1, which is detachably arranged on a mounting base 2, and at least part of the first noise reduction component 1 is used to enclose a first cavity 3;

[0044] A second noise reduction component 4 is at least partially sleeved on the first noise reduction component 1 and forms a second cavity 5 with at least part of the outer wall surface of the first noise reduction component 1;

[0045] The first muffling component 1 is provided with a plurality of muffling holes 6 on at least part thereof, so as to communicate the first cavity 3 and the second cavity 5 through the plurality of muffling holes 6, the muffling frequency range of the first cavity 3 is different from that of the second cavity 5, the first cavity 3 is communicated with the gas outlet of the mounting base 2, so as to make at least part of the gas flowing out of the mounting base 2 flow through the first cavity 3, the muffling holes 6 and the second cavity 5 for vibration reduction.

[0046] Specifically, the mounting base 2 is a compressor in the embodiment, which comprises a compressor body and a connecting flange provided on the compressor body, and the muffling structure is detachably arranged on the connecting flange of the compressor body, at least part of the first muffling component 1 is connected with the connecting flange of the compressor, the first muffling component 1 is sleeved on the connecting flange, and an annular channel is formed between the inner wall surface of the first muffling component 1 and the outer wall surface of the connecting flange. The compressed gas flowing out of the compressor body first flows into the first cavity 3 through the connecting flange for primary muffling (the channel for the compressed gas flowing out of the connecting flange is not shown), then part of the gas after muffling flows out of the annular channel to the outside, and part of the gas after primary muffling enters the second cavity 5 through the muffling holes 6 for secondary muffling, wherein the muffling frequency range of the first cavity 3 is different from that of the second cavity 5, specifically, the muffling frequency range of the first cavity 3 is smaller than that of the second cavity 5, so that the noise of the compressed gas flowing out of the compressor body in the low frequency range can be eliminated in the first cavity 3, part of the gas after primary muffling continues to be muffled in the second cavity 5, the muffling holes 6 also perform primary muffling in the process of the gas entering the second cavity 5 through the muffling holes 6, and then the gas enters the second cavity 5, so as to eliminate the noise of the compressed gas in different frequency ranges, wherein the diameter of the muffling holes 6 is preferably 1 mm, the distance between every two adjacent muffling holes 6 is 1.5 mm, and in order to enhance the muffling effect, the perforation rate of all the muffling holes 6 should satisfy a = πd 2 / 4l 2 , wherein a represents the perforation rate, d represents the diameter of each muffling hole 6, and l represents the distance between two adjacent muffling holes 6.

[0047] The connecting flange provided on the mounting base 2 (i.e. the compressor) is tightly matched with the first muffling component 1, so as to form the annular channel, which is a unique structure, and effectively manage the gas flow path and accurately control the noise.

[0048] When the compressor is running, the high-temperature and high-pressure gas flowing out of the compressor body outlet first enters the first cavity 3 formed by the inner wall surface of the first muffling component 1 and the outer wall surface of the connecting flange. With the characteristics of the first cavity 3, the low-frequency noise in the gas is preliminarily reduced. Here, the first cavity 3 is designed specifically for low-frequency noise, and the vibration energy of the sound wave is converted into heat energy by using the Helmholtz resonance principle, thereby effectively reducing the low-frequency noise component carried by the compressed gas.

[0049] Subsequently, part of the gas that has been preliminarily muffled flows out through the annular channel and is directly discharged to the external environment, while the other part enters the second cavity 5 through the muffling holes 6 for more refined high-frequency noise filtering. The presence of the muffling holes 6 not only serves as a bridge connecting the first cavity 3 and the second cavity 5, but also plays a role in muffling, thereby further weakening the remaining noise in the gas. The design of the muffling holes 6 utilizes the friction and heat exchange effect of sound waves in the pores to implement a second reduction of high-frequency noise for the passing gas.

[0050] At the same time, the second cavity 5 is optimized for high-frequency noise, making it complementary to the first cavity 3 and widening the noise reduction frequency band. The acoustic environment and pore layout inside the second cavity 5 can effectively capture and consume high-frequency sound waves that were not completely eliminated in the first stage of muffling, ensuring that the noise emitted by the compressor is significantly attenuated in the high-frequency band.

[0051] Further, the second cavity 5 is a resonance cavity, and the second cavity 5 is in communication with the outside through a plurality of muffling holes 6; and / or,

[0052] The first cavity 3 has a discharge outlet in communication with the outside, and a plurality of muffling holes 6 are arranged at intervals on the side wall for enclosing the discharge outlet.

[0053] Specifically, the discharge outlet of the first cavity 3 in communication with the outside is the annular channel mentioned above.

[0054] Designing the second cavity 5 as a resonance cavity can achieve efficient absorption of specific frequency noise. When the compressed gas enters the second cavity 5 through the muffling holes 6, the sound waves caused by the gas flow will produce a resonance effect inside the cavity, especially for high-frequency noise. The sound waves repeatedly reflect and refract inside the cavity, and the energy is gradually dissipated and converted into heat energy, thereby significantly reducing the intensity of high-frequency noise. The arrangement of the muffling holes 6 not only serves as a transition for the gas from the first cavity 3 to the second cavity 5, but also can further weaken the passing sound waves. Under the dual action, high-frequency noise is effectively controlled.

[0055] The annular channel, as the exhaust port of the first cavity 3, can effectively guide part of the gas that has been initially silenced to be directly discharged to the outside. This design avoids the additional resistance that may be introduced by the gas passing through the silencing holes 6 again, ensures the smoothness of the gas flow, and thus maintains the exhaust performance of the compressor. At the same time, the layout of the annular channel can uniformly disperse the gas discharge and reduce the noise peak in the discharge moment, further optimizing the overall noise control effect.

[0056] The plurality of silencing holes 6 are arranged on the side wall of the exhaust port of the first cavity 3, which not only ensures uniform distribution of the gas, but also avoids the formation of local noise hotspots. This distribution makes the gas flow into the second cavity 5 more stable, which is conducive to uniform absorption of noise in the resonance cavity and avoids the problem of secondary noise that may be caused by the concentrated influx of gas into a certain area.

[0057] Further, the mounting base 2 includes a mounting portion 201;

[0058] The first silencing component 1 includes a first annular portion 101, wherein at least part of the first annular portion 101 is sleeved on the periphery of the mounting portion 201, a plurality of silencing holes 6 are arranged on the first annular portion 101, and each silencing hole 6 is arranged through the wall thickness of the first annular portion 101 in the radial direction.

[0059] Specifically, as shown in Figure 1 and Figure 2 , the mounting base 2 includes an annular mounting portion 201, and the first silencing component 1 includes a first annular portion 101, which is sleeved on the outside of the mounting portion 201 and forms the above-mentioned annular channel with the outer wall of the mounting portion 201, wherein a plurality of silencing holes 6 are arranged on the first annular portion 101, and each silencing hole 6 communicates with the annular channel and the second cavity 5, wherein the first cavity 3 and the second cavity 5 are only communicated through the plurality of silencing holes 6.

[0060] By designing the first silencing component 1 to include the first annular portion 101, the present application realizes a more compact and efficient silencing structure. The first annular portion 101 is sleeved on the periphery of the annular mounting portion 201 of the mounting base 2, not only forming the first cavity 3, but also naturally forming the annular channel with the mounting portion 201. This structural design ensures that the compressed gas can directly and uniformly enter the first cavity 3 after flowing out of the compressor body outlet, without forming turbulent flow or unnecessary pressure loss, thereby optimizing the gas flow path and providing good conditions for subsequent silencing treatment.

[0061] A plurality of sound holes 6 are arranged radially through the wall thickness of the first annular portion 101, which ensures direct communication between the first cavity 3 and the second cavity 5. When the gas passes through the primary sound attenuation, it enters the second cavity 5 through these radial sound holes 6, which can then be attenuated by the sound holes 6. The radial arrangement of the sound holes 6 not only improves the uniformity of gas flow and reduces fluid resistance, but also takes advantage of its high-frequency sound absorption characteristics to effectively absorb the energy of the sound waves when perforating, converting it into heat energy and reducing the intensity of high-frequency noise.

[0062] The design of only communicating between the first cavity 3 and the second cavity 5 through the sound holes 6 realizes the staged processing of the sound attenuation process. The first cavity 3 is mainly responsible for the absorption of low-frequency noise, while the second cavity 5 focuses on the control of high-frequency noise. This design avoids direct gas flow mixing between the first cavity 3 and the second cavity 5, ensuring the independence and integrity of each stage of sound attenuation effect. At the same time, the presence of sound holes 6 ensures the necessary gas flow between the two cavities, so that the exhaust process of the compressor is smooth and efficient, and is not significantly affected by the presence of the sound attenuation structure.

[0063] Further, the first sound attenuation component 1 is provided with a first mounting position 103; the mounting base 2 is provided with a second mounting position 202, and the sound attenuation structure further comprises a mounting component 7 which is arranged in the second mounting position 202 in a penetrating manner, and the mounting component 7 is arranged in one-to-one correspondence with the second mounting position 202, so as to fix the first sound attenuation component 1 on the mounting base 2 through the mounting component 7.

[0064] Specifically, the first mounting position 103 is a bolt hole or a pin hole arranged on the first sound attenuation component 1, the second mounting position 202 is a bolt hole or a pin hole arranged on the mounting base 2, and the mounting component 7 corresponds to a connecting bolt or a pin, so as to fix the first sound attenuation component 1 on the mounting base 2 through the mounting component 7.

[0065] By arranging the first mounting position 103 and the second mounting position 202 on the first sound attenuation component 1 and the mounting base 2 respectively, and fixing them together by using the mounting component 7 (such as a connecting bolt or a pin), the application provides a more stable sound attenuation structure installation scheme. This design ensures the stability of the sound attenuation component during the operation of the compressor, reducing the risk of performance degradation caused by vibration. At the same time, since the mounting component 7 is arranged in the second mounting position 202 in a penetrating manner, the disassembly and assembly of the sound attenuation structure becomes convenient, facilitating regular inspection, cleaning and replacement, and improving the maintainability of the equipment.

[0066] The one-to-one correspondence design of the first mounting position 103 and the second mounting position 202 simplifies the assembly process of the sound attenuation structure and ensures the installation precision and speed. During the assembly process, the first mounting position 103 of the first sound attenuation component 1 is only needed to be aligned with the second mounting position 202 of the mounting base 2, and then the mounting component 7 is inserted to complete the fixation, without the need for complex adjustment or special tools, thereby greatly improving the assembly efficiency.

[0067] The first mounting position 103 provided on the first sound attenuation component 1 can be a bolt hole or a pin shaft hole, and such a design has high flexibility and can select the most suitable connection mode according to specific installation requirements.

[0068] Further, the first sound attenuation component 1 further includes a second annular portion 102, and the distance between the inner wall of the second annular portion 102 and the central axis of the first annular portion 101 gradually increases in the direction away from the central axis of the first annular portion 101.

[0069] Specifically, the first sound attenuation component 1 further includes a second annular portion 102, the second annular portion 102 is in a Z-shaped type, the part connecting the first annular portion 101 and the second annular portion 102 is in an arc shape, and the distance between the inner wall of the second annular portion 102 and the central axis of the first annular portion 101 gradually increases in the direction away from the central axis of the first annular portion 101.

[0070] By designing the first sound attenuation component 1 to include the second annular portion 102 in a Z-shaped type, the embodiment of the present application not only enhances the mechanical strength of the sound attenuation structure, but also significantly improves the airflow guiding property. The distance between the inner wall of the second annular portion 102 and the central axis gradually increases in the direction away from the central axis of the first annular portion 101, thereby forming a gradually changing flow channel. Such a flow channel design can guide the compressed gas to flow smoothly along a preset path, reduce the formation of turbulence and vortex, thereby reducing the additional noise caused by irregular airflow and improving the overall sound attenuation effect.

[0071] The second annular portion 102 in a Z-shaped type is connected with the first annular portion 101 through an arc shape, which not only avoids the violent impact of airflow at the turning place, but also improves the airflow dynamics through the gradually changing cross section of the second annular portion 102. The second annular portion 102 of the first sound attenuation component 1 is designed in a Z-shaped type, which, in combination with the gradually changing characteristics of the internal flow channel, can effectively improve the noise reduction efficiency of the low-frequency band. During the process of reducing low-frequency noise, the lengthening of the airflow path helps the sound wave to propagate and reflect in the cavity, increases the probability of converting sound energy into heat energy, and thereby improves the sound attenuation effect. At the same time, the Z-shaped structure increases the contact area between the airflow and the cavity wall surface, absorbs more sound energy through the sound-absorbing material of the wall surface, and further enhances the control ability of low-frequency noise.

[0072] Further, the second muffling component 4 comprises a ring-shaped contact portion 401 and a ring-shaped muffling portion 402, the end face of the ring-shaped contact portion 401 is in contact with the outer wall face of at least part of the first muffling component 1, and the ring-shaped muffling portion 402 is used to be connected with the mounting base 2.

[0073] Specifically, the second muffling component 4 is in a Z-shaped structure, which comprises a ring-shaped contact portion 401 and a ring-shaped muffling portion 402, the end face of the ring-shaped contact portion 401 is in contact with the outer wall face of at least part of the first muffling component 1 to form a sealed environment of the second cavity 5, and the ring-shaped muffling portion 402 is used to be connected with the mounting base 2.

[0074] The ring-shaped contact portion 401 of the second muffling component 4 is in close contact with the outer wall face of the first muffling component 1, forming an effective sealed environment, which ensures that the sound wave energy cannot leak between the muffling components, improves the residence time of the sound wave in the second cavity 5 and the interaction with the muffling material, thereby enhancing the muffling effect.

[0075] Further, the distance between the inner wall face of the ring-shaped muffling portion 402 and the outer wall face of the mounting base 2 gradually increases in the direction away from the central axis of the ring-shaped contact portion 401.

[0076] The ring-shaped contact portion 401 of the second muffling component 4 is in close contact with the outer wall face of the first muffling component 1, forming a sealed environment, i.e. the second cavity 5. This sealed design ensures sufficient reflection and absorption of sound waves in the second cavity 5, reducing the leakage of sound wave energy, thereby improving the muffling effect, especially in the high frequency band.

[0077] The second muffling component 4 adopts a Z-shaped structure design, which not only increases the contact area with the first muffling component 1, but also prolongs the path of airflow through the second cavity 5. In the Z-shaped path, the airflow needs to change direction multiple times, which helps the sound wave collide and rub with the cavity wall multiple times, prompting the conversion of sound energy into heat energy, thereby reducing the intensity of noise. In addition, the Z-shaped design can also increase the degree of turbulence of the airflow, which helps to diffuse and attenuate noise, further improving the muffling performance.

[0078] The ring-shaped muffling portion 402 is provided with a third mounting position 403, which is correspondingly arranged with the first mounting position 103 of the first muffling component 1, so as to fix the second muffling component 4 on the first muffling component 1 through the mounting component 7 of the muffling structure.

[0079] Among them, the third mounting position 403 is a threaded hole or a pin hole.

[0080] The third mounting position 403 is provided on the annular muffling part 402 of the second muffling part 4, and corresponds to the first mounting position 103 on the first muffling part 1. The two are tightly connected by mounting components 7 (such as bolts or pins). This design not only ensures the mechanical strength between the first muffling part 1 and the second muffling part 4, but also reduces air leakage between components due to inaccurate installation by precise alignment, thereby improving the sealing performance and muffling effect of the entire muffling structure.

[0081] Through the corresponding design of the third mounting position 403 and the first mounting position 103, the assembly of the muffling structure becomes more convenient and efficient.

[0082] The third mounting position 403 is designed as a threaded hole or a pin hole, providing multiple choices for the connection between the second muffling part 4 and the first muffling part 1.

[0083] The annular contact part 401 and the annular muffling part 402 are integrally formed.

[0084] The integrally formed design of the annular contact part 401 and the annular muffling part 402 significantly enhances the overall structural integrity and mechanical strength of the second muffling part 4. Traditionally, muffling parts are often assembled from multiple independent parts. Although this design is flexible, it may lead to a decrease in structural stability due to the lack of joints and connections. The integrally formed technology eliminates these potential weak links, improves the vibration resistance and durability of the components, especially in high-pressure and continuous vibration working environments. This improved structural strength can prevent deformation or damage of the components, ensuring long-term stability of the muffling performance.

[0085] Further, the first muffling part 1 includes a first body part 104, and a third annular part 105 detachably arranged on the first body part 104;

[0086] The second muffling part 4 is a circular ring, and the annular contact end of the second muffling part 4 is detachably arranged with the outer wall surface of the third annular part 105;

[0087] The third annular part 105 is at least partially sleeved on the mounting base 2, the muffling hole 6 is arranged on the third annular part 105, and the first body part 104, the third annular part 105 and the second muffling part 4 jointly form the second cavity 5.

[0088] Specifically, as shown in Figure 4 The first body part 104 is in a Z shape, and the first body part 104 and the third annular part 105 are detachably arranged.

[0089] By designing the first muffling component 1 to include the first body part 104 and the detachable third annular part 105, the embodiment of the present application greatly improves the maintenance efficiency and upgrade convenience of the muffling structure. When the muffling component needs to be maintained or replaced, the operator can only detach the third annular part 105 while retaining the first body part 104, which reduces the overall system downtime and lowers the maintenance cost. In addition, when the muffling performance needs to be optimized or upgraded, only the third annular part 105 needs to be replaced without changing the structure of the entire muffling component, achieving local optimization of the muffling effect.

[0090] The second muffling component 4 is circular and is detachably arranged on the third annular part 105, which improves the adaptability of the muffling system to different conditions and environments. For example, when facing different compressor models or operating conditions, the size and shape of the muffling structure can be adjusted by replacing the second muffling component 4 to match the new requirements.

[0091] The third annular part 105 is at least partially sleeved on the mounting base 2 and is provided with a muffling hole 6 thereon, which forms a second cavity 5 together with the first body part 104 and the second muffling component 4. This design optimizes the acoustic performance by precisely controlling the position and size of the muffling hole 6, as well as the volume and shape of the second cavity 5.

[0092] Further, the muffling hole 6 is arranged on at least part of the upper surface 106 of the first muffling component 1 away from the mounting base 2.

[0093] As shown in Figure 5 The muffling hole 6 is arranged on at least part of the upper surface of the first muffling component 1 away from the mounting base 2, which ingeniously changes the propagation path of sound waves and improves the muffling efficiency. After the sound waves are discharged from the compressor, they first encounter the first muffling component 1, and the position selection of the muffling hole 6 means that the sound waves need to pass through these holes upwards and then enter the second cavity 5 downwards. This path increases the time and opportunity for sound waves to contact the muffling component, so that more sound energy can be converted into heat energy or other forms of energy, thereby reducing the intensity of sound waves.

[0094] Embodiment 2

[0095] The embodiment of the present application also provides a compressor, which includes the above-mentioned muffling structure.

[0096] The noise reduction structure of the embodiment of the present application is applied to the compressor, which can significantly reduce the noise level of the equipment during operation. The noise reduction structure realizes effective control of noise in different frequency bands through the synergistic effect of the first noise reduction component 1 and the second noise reduction component 4. The first cavity 3 is for low-frequency noise, and the second cavity 5 focuses on medium and high-frequency noise, and the combination of the two ensures the low-noise operation of the compressor in the full frequency range, providing a more comfortable working environment for the operator, and reducing the impact of noise pollution on the surrounding environment.

[0097] Embodiment 3

[0098] The embodiment of the present application also provides an air conditioner, which comprises the compressor described above.

[0099] The noise level of the air conditioner during operation is one of the important factors affecting the user experience. By adopting the optimized compressor described above, the air conditioner of the embodiment of the present application can significantly reduce the noise during operation, whether it is an indoor unit or an outdoor unit, users can enjoy a more peaceful use environment, and at the same time, the stability and reliability of the air conditioner operation can be improved.

[0100] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or combinations thereof.

[0101] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions, and values set forth in the examples are not intended to limit the scope of the application. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, methods and equipment known to those skilled in the relevant art can not be discussed in detail, but under appropriate circumstances, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0102] In the description of the application, it needs to be understood that the orientation words such as "front, back, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element indicated must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0103] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0104] In addition, it should be noted that the use of "first", "second" and the like to define parts only facilitates the differentiation of corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the application.

[0105] The above only describes the preferred embodiments of the application and is not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the scope of protection of the application.

Claims

1. A sound-absorbing structure, characterized in that: include: A first sound-absorbing component (1) is detachably arranged on a mounting base (2), wherein at least a portion of the first sound-absorbing component (1) is used to enclose a first cavity (3); A second muffler component (4) is at least partially sleeved on the first muffler component (1) and forms a second cavity (5) with at least a portion of the outer wall surface of the first muffler component (1); Wherein, a plurality of silencer holes (6) are provided on at least a portion of the first silencer component (1), so that the first cavity (3) and the second cavity (5) are connected through the plurality of silencer holes (6); the silencer frequency band of the first cavity (3) is different from the silencer frequency band of the second cavity (5); the first cavity (3) is connected to the air outlet of the mounting base (2), so that at least a portion of the gas flowing out of the mounting base (2) flows through the first cavity (3), the silencer holes (6) and the second cavity (5) for vibration reduction.

2. The sound-absorbing structure according to claim 1, characterized in that: The second cavity (5) is a resonance cavity, and the second cavity (5) is connected to the outside through the plurality of muffler holes (6); and / or, The first cavity (3) has an outlet communicating with the outside, and a plurality of muffler holes (6) are arranged at intervals on a side wall for surrounding the outlet.

3. The sound-absorbing structure according to claim 1, characterized in that: The installation base (2) includes an installation portion (201); The first muffler component (1) comprises a first annular portion (101), wherein at least a portion of the first annular portion (101) is sleeved around the outer periphery of the mounting portion (201), a plurality of muffler holes (6) are provided on the first annular portion (101), and each of the muffler holes (6) is radially penetrating the wall thickness of the first annular portion (101); and / or, The first muffler component (1) is provided with a first mounting position (103); the mounting base (2) is provided with a second mounting position (202); the muffler structure further comprises a mounting component (7) which can be interspersed and arranged on the second mounting position (202); the mounting component (7) is arranged in a one-to-one correspondence with the second mounting position (202), so that the first muffler component (1) is fixed on the mounting base (2) through the mounting component (7).

4. The sound-absorbing structure according to claim 3, characterized in that: The first sound-absorbing component (1) further comprises a second annular portion (102), wherein the distance between the inner wall of the second annular portion (102) and the central axis of the first annular portion (101) gradually increases in a direction away from the central axis of the first annular portion (101).

5. The sound-absorbing structure according to claim 1, characterized in that: The second silencer component (4) comprises an annular contact portion (401) and an annular silencer portion (402), wherein the end face of the annular contact portion (401) contacts at least a portion of the outer wall surface of the first silencer component (1), and the annular silencer portion (402) is used to connect to the mounting base (2).

6. The sound-absorbing structure according to claim 5, characterized in that: The distance between the inner wall surface of the annular muffler portion (402) and the outer wall surface of the mounting base (2) gradually increases in a direction away from the central axis of the annular contact portion (401); and / or, A third mounting position (403) is provided on the annular muffler portion (402), and the third mounting position (403) is provided in a one-to-one correspondence with the first mounting position (103) of the first muffler component (1), so as to fix the second muffler component (4) on the first muffler component (1) through the mounting component (7) of the muffler structure; and / or, The annular contact portion (401) and the annular sound-absorbing portion (402) are integrally formed.

7. The sound-absorbing structure according to claim 1, characterized in that: The first sound-absorbing component (1) comprises a first body portion (104), and a third annular portion (105) detachably arranged on the first body portion (104); The second silencer component (4) is annular, and the annular contact end of the second silencer component (4) is detachably arranged on the outer wall surface of the third annular portion (105); The third annular portion (105) is at least partially sleeved on the mounting base (2), the muffler hole (6) is provided on the third annular portion (105), and the first body portion (104), the third annular portion (105) and the second muffler component (4) together form the second cavity (5).

8. The sound-absorbing structure according to claim 1, characterized in that: The muffler hole (6) is provided on at least a portion of the upper surface (106) of the first muffler component (1) away from the mounting base (2).

9. A compressor comprising a sound-absorbing structure, characterized in that: The sound-absorbing structure is the sound-absorbing structure according to any one of claims 1 to 8.

10. An air conditioner comprising a compressor, characterized in that: The compressor is the compressor described in claim 9.

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