An exhaust silencer and a compressor using the same.

Abstract

This invention discloses an exhaust silencing device and a compressor using the same. The exhaust silencing device includes a housing assembly, an intake assembly, and an exhaust assembly. The intake and exhaust assemblies are both connected to the housing assembly. Each of the housing assembly, intake assembly, and exhaust assembly has interconnected silencing regions inside. The housing assembly has an oil return hole communicating with its silencing regions. When a gas-liquid mixture enters from the intake assembly, it is damped and silenced by the silencing regions and then separated. The gas is discharged from the exhaust assembly, and the liquid is discharged from the oil return hole. This invention, by providing interconnected silencing regions inside the housing assembly, intake assembly, and exhaust assembly, and by providing interconnected oil return holes within these silencing regions, can effectively suppress compressor exhaust pressure pulsations, resulting in smoother output gas and reduced noise and vibration. It also locks in the compressor lubricating oil and returns it to the oil sump, improving compressor reliability, reducing compressor oil content, and increasing the heat exchange efficiency of the system pipeline.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more particularly to an exhaust silencing device and a compressor using the same. Background Technology

[0002] Currently, household air conditioners have become common household appliances, especially in urban communities where their penetration rate is constantly increasing. However, due to the high installation density of outdoor air conditioner units, noise issues have gradually become a major source of user complaints, seriously affecting the user experience.

[0003] Compressor noise originates from vibration, which is mainly categorized into mechanical and hydrodynamic noise. Among the many factors, the airflow pulsation during the exhaust process in hydrodynamic noise can be considered a major contributor. However, current compressor exhaust pipes lack relevant silencing devices. Figure 1 As shown, the large pressure pulsations in the discharged gas can easily cause pipeline resonance, leading to noise problems. In existing technologies, the gas in the upper chamber of the compressor motor is usually discharged directly through the exhaust pipe. In this case, the gas exhibits certain pressure pulsations and contains liquid components such as lubricating oil. Pressure pulsations are the main cause of noise problems, and the lubricating oil, discharged with the gas, easily adheres to the inner wall of the copper pipes, further affecting heat exchange efficiency. Therefore, the existing compressor exhaust method fails to effectively solve the noise and lubricating oil contamination problems and urgently needs improvement. Summary of the Invention

[0004] The purpose of this invention is to provide an exhaust silencing device and a compressor using the same, aiming to solve the technical problems of existing compressor exhaust methods failing to effectively address noise and lubricating oil contamination.

[0005] To solve the above-mentioned technical problems, the objective of this invention is achieved through the following technical solution: A silencing device for an exhaust compressor is provided, comprising a housing assembly, an intake assembly, and an exhaust assembly. The intake assembly and exhaust assembly are both connected to the housing assembly. The housing assembly, intake assembly, and exhaust assembly each have interconnected silencing regions inside. The housing assembly has an oil return hole communicating with its silencing regions. When a gas-liquid mixture enters from the intake assembly, it is damped and silenced by the silencing regions and then separated into liquids. The gas is discharged from the exhaust assembly, and the liquid is discharged from the oil return hole.

[0006] Furthermore, the air intake assembly includes an air intake component, the air intake component has a hollow interior forming a first noise reduction area, and the sidewall of the air intake component has a plurality of first bypass holes communicating with the noise reduction area of ​​the housing assembly.

[0007] Furthermore, the air intake assembly also includes a plurality of guide members spaced apart on the inner wall of the air intake member, and the plurality of guide members are inclined toward the air intake port of the air intake assembly from the inner wall of the air intake member toward the center.

[0008] Furthermore, the housing assembly includes a movable damping baffle and a damping elastic element. The air outlet of the air intake assembly is disposed opposite to the damping baffle. The damping elastic element and the air intake assembly are located on both sides of the damping baffle. The damping elastic element is connected between one end of the housing assembly and the damping baffle.

[0009] Furthermore, the housing assembly also includes a first partition; the first partition is close to the air intake assembly relative to the damping partition, and the area between the first partition and the damping partition forms a second noise reduction area.

[0010] Furthermore, the housing assembly also includes a second partition, which is located away from the damping partition relative to the first partition. A transfer member is provided between the first partition and the second partition, and the interior of the transfer member is hollow to form a third noise-absorbing area. A fourth noise-absorbing area is formed between the second partition and the other end of the housing assembly.

[0011] Furthermore, one end of the exhaust assembly extends into the position of the second partition, and the interior of the exhaust assembly is hollow to form a fifth silencing area, and a sixth silencing area is formed between the first partition and the second partition.

[0012] Furthermore, the transfer component is provided with a second bypass hole that communicates with the sixth silencing area.

[0013] Furthermore, the exhaust assembly is provided with a third bypass hole that communicates with the second silencing area and the sixth silencing area.

[0014] Furthermore, the oil return hole is located in the fourth noise reduction area.

[0015] This invention also provides a compressor, including the exhaust silencer device described above.

[0016] This invention provides an exhaust silencing device and a compressor using the same. The exhaust silencing device is applied to a compressor and includes a housing assembly, an intake assembly, and an exhaust assembly. The intake and exhaust assemblies are both connected to the housing assembly. Each of the housing assembly, intake assembly, and exhaust assembly has interconnected silencing regions inside. The housing assembly has an oil return hole communicating with its silencing regions. When a gas-liquid mixture enters from the intake assembly, it is damped and silenced by the silencing regions and then separated. The gas is discharged from the exhaust assembly, and the liquid is discharged from the oil return hole. This invention, by providing interconnected silencing regions inside the housing assembly, intake assembly, and exhaust assembly, and by providing interconnected oil return holes within these silencing regions, can effectively suppress compressor exhaust pressure pulsations, resulting in smoother output gas and reduced noise and vibration; it also locks in the compressor lubricating oil and returns it to the oil sump, improving compressor reliability; and it reduces the compressor's oil content, improving the system's pipeline heat exchange efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a cross-sectional view of a traditional compressor.

[0019] Figure 2 This is a cross-sectional view of an exhaust muffler provided in an embodiment of the present invention;

[0020] Figure 3 A cross-sectional view of a compressor provided in an embodiment of the present invention;

[0021] Figure 4 A pressure pulsation comparison diagram provided for an embodiment of the present invention.

[0022] Explanation of the markings in the image:

[0023] 100. Housing assembly; 101. Oil return hole; 102. Damping baffle; 103. Damping elastic element; 104. First baffle; 105. Second baffle; 106. Transfer component; 1061. Second bypass hole;

[0024] 200. Intake assembly; 201. Intake component; 2011. First bypass hole; 202. Guide component;

[0025] 300, Exhaust assembly; 301, Third bypass hole. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0028] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0029] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0030] Combination Figure 2 As shown, this embodiment of the invention provides an exhaust silencing device applied to a compressor, including a housing assembly 100, an intake assembly 200, and an exhaust assembly 300. The intake assembly 200 and the exhaust assembly 300 are both connected to the housing assembly 100. The housing assembly 100, the intake assembly 200, and the exhaust assembly 300 are all provided with interconnected silencing areas inside. The housing assembly 100 is provided with an oil return hole 101 communicating with its silencing area. When a gas-liquid mixture enters from the intake assembly 200, it is damped and silenced by the silencing areas and separated into liquids. The gas is discharged from the exhaust assembly 300, and the liquid is discharged from the oil return hole 101.

[0031] In this embodiment, the housing assembly 100, the intake assembly 200, and the exhaust assembly 300 are internally provided with interconnected silencing regions. The design of these silencing regions enables vibration damping and noise reduction of the gas-liquid mixture, as well as gas-liquid separation. Specifically, the housing assembly 100 can withstand the exhaust pressure pulsations of the gas-liquid mixture from the intake assembly 200. The housing assembly 100 has multiple silencing regions internally, which are interconnected to form a unified vibration damping and noise reduction space.

[0032] Furthermore, as the gas-liquid mixture flows through multiple silencing zones inside the housing assembly 100, the gas and liquid are further separated as the flow continues, and the gas is effectively damped. The gas is discharged at the exhaust assembly 300, while the liquid (such as lubricating oil) is discharged through the oil return hole 101 on the housing assembly 100. The oil return hole 101 is configured to communicate with the silencing zones inside the housing assembly 100 to ensure smooth liquid discharge and prevent liquid from flowing back into the housing assembly 100, thereby locking the compressor lubricating oil and returning it to the oil sump, reducing the migration of compressor refrigerant lubricating oil, ensuring the lubrication of the compressor pump body, improving compressor reliability, reducing the compressor oil content, and improving the heat exchange efficiency of the system pipeline.

[0033] In the above embodiments, the silencing region can cooperate with the intake assembly 200 and the exhaust assembly 300 to minimize the noise generated during the exhaust process. By effectively reducing vibration and noise, and minimizing the backflow of lubricating oil to the exhaust silencing device during gas-liquid separation, the aim is to reduce noise and improve the heat exchange efficiency of the system pipeline. Of course, the structure of the silencing region can be a damping structure or a combination of multiple curved channels, designed to achieve gas vibration reduction and noise reduction through different fluid dynamic principles.

[0034] In one embodiment, the air intake assembly 200 includes an air intake member 201, the air intake member 201 is hollow to form a first noise reduction area, and the sidewall of the air intake member 201 is provided with a plurality of first bypass holes 2011 that communicate with the noise reduction area of ​​the housing assembly 100.

[0035] In this embodiment, the air intake 201 has a hollow structure, and its internal space forms a first noise reduction area (i.e., Figure 2 Region 1). The hollow structure design allows the air intake 201 to accommodate and guide the incoming gas flow. Simultaneously, the internal cavity design enables effective vibration damping and noise reduction as the gas passes through the first silencing region. In this embodiment of the invention, a total of five levels of voltage regulation can be achieved. The first silencing region is used to achieve the first level of voltage regulation; the other levels of voltage regulation will be described in detail below.

[0036] To further optimize the noise reduction effect, the side wall of the air intake component 201 is provided with multiple first bypass holes 2011, which are connected to the noise reduction area of ​​the housing assembly 100. The first bypass holes 2011 are used to adjust the pressure pulsation peak value of the fluid in the main circuit. When the pressure pulsation peak value flows through, part of the airflow in the main circuit enters other noise reduction areas through the first bypass holes 2011, thereby reducing the pressure pulsation peak value; when the pressure pulsation valley value flows through, part of the airflow in other noise reduction areas flows back into the main circuit from the first bypass holes 2011, thereby reducing the pressure pulsation valley value.

[0037] Specifically, when gas enters through the intake component 201, it first undergoes initial silencing within the first silencing area inside the intake component 201. Subsequently, a portion of the airflow passes through the first bypass hole 2011 and enters other silencing areas of the housing assembly 100 for further silencing and vibration reduction. The intake component 201 can be made of appropriate materials, such as materials with damping functions, to further improve the silencing effect. Furthermore, the number, size, and distribution of the first bypass holes 2011 can be optimized and adjusted according to specific silencing requirements. Appropriate hole diameter and distribution can effectively regulate gas flow rate and direction, further improving silencing efficiency.

[0038] In one embodiment, the air intake assembly 200 further includes a plurality of guides 202 spaced apart from the sidewall of the air intake member 201, and the plurality of guides 202 are inclined toward the air intake of the air intake assembly 200 from the sidewall of the air intake member 201 toward the center.

[0039] In this embodiment, multiple guides 202 are provided on the sidewall of the air intake 201. These guides 202 can be made of metal or other materials with high strength and wear resistance, such as fins. The main function of the guides 202 is to guide the airflow along the sidewall of the air intake 201 and change the direction of airflow. Through the inclined design of these guides 202, the movement trajectory of the airflow within the air intake 201 is adjusted, making the airflow more evenly distributed and reducing airflow disturbance and turbulence. The inclination angle of the guides 202 can be adjusted according to the overall design of the air intake assembly 200 and the noise reduction requirements. The inclination angle can be designed within a certain range to ensure that some airflow can be guided from the sidewall of the air intake 201 to the first bypass hole 2011.

[0040] Furthermore, the spacing of the multiple guides 202 helps optimize the airflow path, allowing the airflow to be more uniform and smooth as it passes through the intake component 201. By setting the guides 202, the intake assembly 200 can not only improve the gas flow efficiency, but also effectively reduce noise problems caused by airflow disturbance and uneven distribution, further enhancing the performance of the exhaust muffler.

[0041] In one embodiment, the housing assembly 100 includes a movable damping baffle 102 and a damping elastic member 103. The air outlet of the air intake assembly 200 is disposed opposite to the damping baffle 102. The damping elastic member 103 and the air intake assembly 200 are located on both sides of the damping baffle 102. The damping elastic member 103 is connected between one end of the housing assembly 100 and the damping baffle 102.

[0042] like Figure 2As shown, one end of the housing assembly 100 can be designed as an upper cover, and the other end of the housing assembly 100 can be designed as a lower cover. One end of the intake assembly 200 (one end of the exhaust port of the intake assembly 200) extends from the lower cover into the interior of the exhaust muffler, and the other end of the intake assembly 200 (one end of the intake port of the intake assembly 200) is located outside the lower cover. One end of the exhaust assembly 300 extends from the upper cover into the interior of the exhaust muffler, and the other end of the exhaust assembly 300 is located outside the upper cover.

[0043] In this embodiment, the damping baffle 102 of the housing assembly 100 is designed as a movable structure, capable of moving within a certain range. This allows the damping baffle 102 to adjust its position according to changes in airflow pressure or other operating conditions to adapt to different working environments. The air outlet of the air intake assembly 200 is positioned opposite to the damping baffle 102. After the airflow exits from the air outlet of the air intake assembly 200, it first contacts the damping baffle 102, thereby achieving vibration reduction and damping effects. The damping elastic element 103 is connected to one end of the housing assembly 100 and the damping baffle 102. The main function of the damping elastic element 103 is to absorb and dissipate the vibration energy generated during the airflow through elastic deformation. When the airflow passes through the air outlet of the air intake assembly 200, the pressure pulsation of the airflow acts on the damping baffle 102, and the damping elastic element 103 provides a reaction force through its elastic properties, mitigating the vibration caused by airflow changes and effectively reducing the noise caused by the airflow during discharge.

[0044] Furthermore, the range of motion of the damping baffle 102 can be adjusted according to specific design requirements, and its movement range can be limited by setting appropriate support and guiding structures. The material and elastic coefficient of the damping elastic element 103 can also be selected as needed; common materials include rubber or other elastic composite materials with high elasticity and good shock absorption performance. This embodiment, through the design of the movable damping baffle 102 and the damping elastic element 103, provides more precise vibration absorption and noise suppression capabilities during the airflow discharge process of the intake assembly 200, thereby improving the working stability and noise control effect of the exhaust muffler.

[0045] In one embodiment, the housing assembly 100 further includes a first partition 104; the first partition 104 is close to the intake assembly 200 relative to the damping partition 102, and the area between the first partition 104 and the damping partition 102 forms a second noise reduction area.

[0046] In this embodiment, the area between the first partition 104 and the damping partition 102 forms a second noise-absorbing area (i.e., Figure 2(Region 2) Specifically, the first baffle 104 is positioned close to the intake assembly 200 and is arranged opposite to the damping baffle 102. The main function of the first baffle 104 is to further optimize the airflow path and create a second silencing zone in the area between it and the damping baffle 102. The second silencing zone further reduces vibration and noise by slowing down the airflow. After entering the intake assembly 200, the airflow first passes through the first silencing zone and then enters the second silencing zone, where it is further subjected to effective noise suppression and vibration control. The relative arrangement of the first baffle 104 and the damping baffle 102 can guide the airflow to a certain extent, reduce high-frequency noise components in the airflow, and balance the airflow pressure. Here, the second silencing zone is the second-stage pressure stabilization. Figure 2 As shown, when the airflow pressure entering the second silencing region reaches its peak, it pushes the damping baffle 102 upward, compressing the damping elastic element 103. At this time, the kinetic energy of the airflow pulsation peak is converted into the elastic energy of the damping elastic element 103 and stored. When the airflow pressure entering the second silencing region reaches its trough, the damping baffle 102 moves downward, and the damping elastic element 103 extends, releasing the stored elastic energy. By suppressing and storing energy at the pressure pulsation peak value in the second silencing region and compensating for and releasing energy at the pressure pulsation trough value, the effect of weakening the airflow pulsation peak value is achieved, realizing the second-stage pressure stabilization.

[0047] Furthermore, the first partition 104 can be made of a material with strong sound absorption properties, such as composite materials, metal materials, or other suitable elastic materials with excellent sound insulation and sound absorption properties. In selecting materials, the first partition 104 can effectively isolate high-frequency noise and, when airflow passes through, not cause excessive flow resistance, thus avoiding affecting overall working efficiency.

[0048] In one embodiment, the housing assembly 100 further includes a second partition 105, which is located away from the damping partition 102 relative to the first partition 104. A transfer member 106 is provided between the first partition 104 and the second partition 105. The transfer member 106 is hollow inside to form a third noise reduction area. A fourth noise reduction area is formed between the second partition 105 and the other end of the housing assembly 100.

[0049] In this embodiment, the hollow internal structure of the transfer component 106 forms a third noise-absorbing area (i.e., Figure 2 In region 3), a fourth noise-absorbing region (i.e., region 3) is formed between the second partition 105 and the other end of the housing assembly 100. Figure 2Region 4). The second baffle 105 is located opposite the first baffle 104 and is in a more distant region compared to the position of the damping baffle 102. The transfer component 106 itself has a hollow design, forming a third silencing zone inside, where the airflow receives further silencing and vibration reduction treatment when passing through the third silencing zone.

[0050] Furthermore, the function of the transfer element 106 is to further slow down and stabilize the airflow as it passes through by increasing the channel length and dispersion of the airflow. Due to the hollow structure of the transfer element 106, pressure fluctuations generated by the airflow in this area are effectively dissipated within the inner cavity of the transfer element 106, thereby reducing airflow noise and vibration. The third silencing area not only reduces noise but also optimizes the airflow path by guiding and buffering the airflow.

[0051] Simultaneously, a fourth silencing region is formed between the second baffle 105 and the other end of the housing assembly 100. This region, through the action of the second baffle 105, further suppresses noise from the airflow. The fourth silencing region, together with the third silencing region, forms a continuous silencing system, ensuring that the airflow undergoes multi-stage vibration reduction and silencing treatment throughout the exhaust path. The design of the fourth silencing region not only reduces high-frequency noise in the airflow but also reduces additional noise caused by uneven airflow distribution and pressure fluctuations.

[0052] This embodiment utilizes the synergistic effect of the second partition 105, the first partition 104, and the transfer component 106 to form multiple silencing zones, thereby effectively controlling noise and vibration in the airflow during compressor exhaust. Each silencing zone provides different levels of vibration reduction, noise reduction, and airflow guidance as the airflow passes through, reducing the noise generated by the compressor during operation.

[0053] In one embodiment, one end of the exhaust assembly 300 extends into the position of the second partition 105, the interior of the exhaust assembly 300 is hollow to form a fifth silencing region, and a sixth silencing region is formed between the first partition 104 and the second partition 105.

[0054] In this embodiment, one end of the exhaust assembly 300 is designed to pass through the second partition 105, allowing the exhaust assembly 300 to connect with the second partition 105. The exhaust assembly 300 has a hollow structure inside, which constitutes the fifth silencing region (i.e., Figure 2 (Region 5) When gas flows through the exhaust assembly 300, it first enters the fifth silencing zone. The fifth silencing zone can slow down the airflow speed and disperse the airflow pressure, further reducing noise and vibration in the airflow. When the gas passes through the fifth silencing zone, pressure pulsation and flow noise can be effectively attenuated.

[0055] In addition, the area between the first partition 104 and the second partition 105 forms a sixth noise-absorbing area (i.e. Figure 2 (Region 6 in the diagram). The sixth silencing zone is designed to further suppress any airflow noise that may still exist after passing through the exhaust assembly 300. By increasing the length of the airflow channel and enhancing airflow turbulence, the sixth silencing zone provides greater vibration damping and noise attenuation during airflow. The sixth silencing zone effectively eliminates noise in the airflow. The design of the sixth silencing zone also increases the complexity of the airflow channel, thereby effectively reducing noise propagation.

[0056] In one embodiment, the transfer component 106 is provided with a second bypass hole 1061 that communicates with the sixth silencing area.

[0057] In this embodiment, the second bypass hole 1061 is disposed on the transfer member 106 and is connected to the sixth silencing area. Its main purpose is to divert airflow through the second bypass hole 1061, allowing a portion of the airflow to enter the sixth silencing area as it passes through the transfer member 106, thereby further attenuating airflow noise. Within the sixth silencing area, the airflow undergoes additional vibration damping and silencing processes, further reducing noise and pressure fluctuations in the airflow. The size and distribution of the second bypass hole 1061 can be optimized according to silencing requirements. By adjusting the diameter and number of the second bypass holes 1061, the airflow distribution can be effectively adjusted, ensuring uniform processing of the airflow as it flows through the sixth silencing area, thereby improving the silencing effect.

[0058] Furthermore, the second bypass hole 1061 allows the transfer component 106 to guide airflow while simultaneously diverting and damping the airflow (i.e., third-stage voltage stabilization) through its connection with the sixth silencing region. The material and structural design of the transfer component 106 must consider the optimization of fluid dynamics and noise attenuation; materials with sufficient strength, good shock resistance, and low flow resistance, such as alloy metals and plastic composite materials, can be selected. The fourth silencing region serves to refract the airflow back and forth between the first partition 104 and the second partition 105, achieving vibration damping and noise reduction; this is the fourth stage of voltage stabilization.

[0059] In one embodiment, the exhaust assembly 300 is provided with a third bypass hole 301 that communicates with the second silencing region and the sixth silencing region.

[0060] In this embodiment, the third bypass hole 301 is disposed on the exhaust assembly 300, and the third bypass hole 301 is connected to the second silencing region and the sixth silencing region. When the airflow passes through the exhaust assembly 300, part of the airflow flows into the second silencing region and the sixth silencing region through the third bypass hole 301, thus utilizing the vibration reduction and silencing functions of each silencing region to further reduce noise and pressure pulsation in the airflow. The presence of the third bypass hole 301 allows the airflow to be effectively diverted inside the exhaust assembly 300. After the airflow passes through the third bypass hole 301, part of the airflow flows into the second silencing region and the sixth silencing region. In the second silencing region and the sixth silencing region, the airflow undergoes an additional vibration reduction and silencing process, thereby further reducing airflow vibration and noise, which is the fifth stage of voltage stabilization.

[0061] Furthermore, the size, position, and distribution of the third bypass hole 301 can be optimized according to actual needs. For example, the diameter and number of the third bypass holes 301 can be adjusted through fluid dynamics calculations to ensure uniform airflow distribution. By providing the third bypass hole 301 on the exhaust assembly 300 that communicates with the second and sixth silencing regions, this embodiment further enhances the silencing effect of the airflow, optimizes the airflow path, and improves the overall performance of the exhaust silencing device.

[0062] In one embodiment, the oil return hole 101 is disposed in the fourth noise reduction area.

[0063] In this embodiment, the oil return hole 101 is located within the fourth silencing region, which is typically situated on the side of the exhaust silencing device. Within this fourth silencing region, the airflow has already undergone vibration damping and silencing in the first three silencing regions, resulting in attenuation of noise and vibration. During airflow discharge, lubricating oil or liquid in the gas can be discharged through the oil return hole 101 without interfering with the silencing effect. The location and size of the oil return hole 101 can be optimized based on the design of the liquid return flow rate and the airflow path. Generally, the diameter of the oil return hole 101 should be large enough to ensure timely liquid discharge, but not so large as to affect the normal flow of airflow or cause secondary noise excitation.

[0064] Furthermore, the oil return hole 101 can be used in conjunction with a fluid guiding device, such as a streamlined guide groove or conduit, to further ensure the smooth discharge of liquid while reducing noise and vibration caused by changes in airflow. This embodiment, by setting the oil return hole 101 within the fourth silencing zone, not only effectively improves the airflow discharge efficiency and liquid return speed, but also maintains the cleanliness and efficient operation of the exhaust silencing device without affecting the silencing effect.

[0065] The exhaust muffler of this invention is mainly made of steel.

[0066] This invention suppresses compressor exhaust pressure pulsation by continuously absorbing the peak-to-peak value of pressure pulsation, thereby achieving noise reduction. The entire exhaust silencing process is as follows: The gas-liquid mixture in the upper cavity of the motor enters the exhaust silencing device through the intake assembly 200, i.e., it enters region 1. When the pulsating gas-liquid mixture enters region 1, the pressure pulsation peak value will enter the branch circuit under the guidance of the guide 202, and then overflow from the first bypass hole 2011 to regions 4 and 6, thereby weakening the pressure pulsation peak value. At the same time, some of the lubricating oil carried out with the gas is separated from the first bypass hole 2011, reducing the migration of lubricating oil with the gas. After the airflow undergoes the first stage of pressure stabilization in region 1, the main airflow then enters region 2. When the airflow pressure entering region 2 reaches its peak, it pushes the damping baffle 102 upward, compressing the damping elastic element 103. At this time, the kinetic energy of the airflow pulsation peak is converted into the elastic energy of the damping elastic element 103 and stored. When the airflow pressure entering region 2 reaches its trough, the damping baffle 102 moves downward, and the damping elastic element 103 extends, releasing the stored elastic energy. By suppressing and storing energy at the pressure pulsation peak in region 2 and compensating for and releasing energy at the pressure pulsation trough, the peak value of the airflow pulsation is weakened, achieving the second stage of pressure stabilization. Subsequently, the main airflow enters region 3, and the pressure pulsation of the main airflow overflows through the second bypass hole 1061 of the transfer element 106, achieving the third stage of pressure stabilization. The main airflow then enters region 4 from region 3. The airflow refracts back and forth between the second baffle 105 and the lower end of the exhaust muffler, creating a phase difference to reduce pulsation peaks and achieve the fourth stage of pressure stabilization. During this process, the separated oil and liquid are discharged through the oil return hole 101. The main airflow then enters region 5. As it passes through the exhaust assembly 300, the pulsating airflow overflows from the third bypass hole 301 into regions 6 and 2, further undergoing the fifth stage of pressure stabilization. After undergoing the above five stages of pressure pulsation suppression, the gas finally output from the exhaust assembly 300 becomes more stable, thus achieving vibration reduction and noise reduction.

[0067] It should be noted that in this embodiment of the invention, regions 1, 3, and 5 are the main circuit pathways, while region 6 is a bypass to regions 1, 3, and 5, used to regulate the peak value of fluid pressure pulsations in the main circuit. When the peak value of the main circuit pressure pulsations flows through, part of the airflow in the main circuit enters region 6 through the bypass hole, thereby reducing the peak value of the pressure pulsations; when the trough value of the main circuit pressure pulsations flows through, part of the airflow in region 6 flows out from the bypass hole and enters the main circuit, thereby reducing the trough value of the pressure pulsations; at the same time, regions 1, 3, and 5 are located at different positions in the main circuit, and there is a certain phase difference in the airflow pulsations. The different phase differences converge in region 6, and the phase differences between each pair cancel out the pressure pulsations, further playing a role in stabilizing the pressure.

[0068] Combination Figure 3As shown, this embodiment of the invention also provides a compressor, including the exhaust silencer device described above.

[0069] In this embodiment, the compressor includes a compressor body and an exhaust silencer. The exhaust silencer, as designed above, effectively reduces noise in the airflow along the compressor's exhaust path. The exhaust silencer integrates a housing assembly 100, an intake assembly 200, an exhaust assembly 300, and multiple silencer zones. Through the synergistic effect of these silencer zones, pressure fluctuations and noise in the airflow can be significantly reduced. In this embodiment, the silencer zones can be divided into six zones, as shown below. Figure 2 As shown, the airflow direction is from region 1 to region 6, corresponding to the first to the sixth silencing regions. The compressor's operation involves gas entering the exhaust silencing device through the intake assembly 200 and then being discharged through the exhaust assembly 300. During the exhaust process, the gas passes through various silencing regions in sequence, including the first, second, third, fourth, and sixth silencing regions, undergoing multiple stages of vibration reduction and noise reduction before finally being discharged.

[0070] In summary, this invention, by introducing a guide element 202 and a bypass hole structure into the exhaust muffler, can filter and suppress pressure pulsation peaks in the airflow. That is, by adjusting the airflow path, the amplitude of pressure fluctuations is reduced, thereby lowering the noise and vibration generated during compressor operation. To further improve the muffler effect, this invention also uses a damping mechanism (i.e., a damping baffle 102 and a damping elastic element 103) to compensate for and suppress pressure pulsation peaks during the exhaust process. Figure 4 As shown in the figure, the solid lines represent the pressure pulsation changes during the operation of the compressor in the prior art, while the dashed lines represent the pressure pulsation changes during the operation of the compressor of the present invention after adopting the exhaust silencer. The comparison shows that the overall pressure pulsation of the compressor of the present invention is lower than that of the compressor in the prior art, thus the noise is better resolved.

[0071] In addition, the exhaust silencer of the present invention can effectively separate the gas-liquid mixture, prevent the compressor's refrigeration lubricating oil from migrating outward, and improve the compressor's reliability and service life.

[0072] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An exhaust silencer device, applied to a compressor, characterized in that, The device includes a housing assembly, an intake assembly, and an exhaust assembly. The intake assembly and the exhaust assembly are both connected to the housing assembly. The housing assembly, the intake assembly, and the exhaust assembly each have interconnected silencing areas inside. The housing assembly is provided with an oil return hole that communicates with its silencing areas. When a gas-liquid mixture enters from the intake assembly, it is damped and silenced by each of the silencing areas and then separated into liquids. The gas is discharged from the exhaust assembly, and the liquid is discharged from the oil return hole. The air intake assembly includes an air intake component, the air intake component is hollow to form a first noise reduction area, and the side wall of the air intake component is provided with a plurality of first bypass holes communicating with the noise reduction area of ​​the housing assembly. The air intake assembly further includes a plurality of guides spaced apart on the inner wall of the air intake member, and the plurality of guides are inclined toward the air intake of the air intake assembly from the inner wall of the air intake member toward the center; wherein, the guides are fins.

2. The exhaust muffler according to claim 1, characterized in that, The housing assembly includes a movable damping baffle and a damping elastic element. The air outlet of the air inlet assembly is disposed opposite to the damping baffle. The damping elastic element and the air inlet assembly are located on both sides of the damping baffle. The damping elastic element is connected between one end of the housing assembly and the damping baffle.

3. The exhaust muffler according to claim 2, characterized in that, The housing assembly further includes a first partition; the first partition is close to the air intake assembly relative to the damping partition, and the area between the first partition and the damping partition forms a second noise reduction area.

4. The exhaust muffler according to claim 3, characterized in that, The housing assembly further includes a second partition, which is located away from the damping partition relative to the first partition. A transfer member is provided between the first partition and the second partition, and the interior of the transfer member is hollow to form a third noise-absorbing area. A fourth noise-absorbing area is formed between the second partition and the other end of the housing assembly.

5. The exhaust muffler according to claim 4, characterized in that, One end of the exhaust assembly extends into the position of the second partition, and the interior of the exhaust assembly is hollow to form a fifth silencing area, and a sixth silencing area is formed between the first partition and the second partition.

6. The exhaust muffler according to claim 5, characterized in that, The transfer component is provided with a second bypass hole that communicates with the sixth silencing area.

7. The exhaust muffler according to claim 5, characterized in that, The exhaust assembly is provided with a third bypass hole that communicates with the second silencing area and the sixth silencing area.

8. The exhaust muffler according to claim 4, characterized in that, The oil return hole is located in the fourth noise reduction area.

9. A compressor, characterized in that, Includes the exhaust muffler as described in any one of claims 1-8.

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