Exhaust silencer and compressor applying same

Abstract

The invention discloses an exhaust silencer and a compressor applying the exhaust silencer, the exhaust silencer comprises a shell assembly, an air inlet assembly and an exhaust assembly, the air inlet assembly and the exhaust assembly are both connected to the shell assembly, and the shell assembly, the air inlet assembly and the exhaust assembly are internally provided with silencing areas which are communicated with one another; an oil return hole communicated with the silencing area of the shell assembly is formed in the shell assembly, and after a gas-liquid mixture enters from the gas inlet assembly, is subjected to vibration reduction and silencing through the silencing areas and is subjected to liquid separation, gas is discharged out of the exhaust assembly, and liquid is discharged out of the oil return hole. Mutually communicated silencing areas are arranged in the shell assembly, the air inlet assembly and the exhaust assembly, and communicated oil return holes are further formed in the silencing areas, so that exhaust pressure pulsation of the compressor can be effectively restrained, output air is smoother, and noise and vibration are reduced; the reliability of the compressor is improved, the oil content of the compressor is reduced, and the heat exchange efficiency of a system pipeline is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to an exhaust silencer and a compressor using the same. Background Art

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

[0003] The noise of the compressor comes from vibration, and the noise vibration mainly includes mechanical noise vibration and fluid dynamic noise vibration. Among many factors, the air flow pulsation in the exhaust process of fluid dynamic noise vibration can be classified as the main factor according to the contribution amount. However, the compressor exhaust pipe in the prior art has no relevant silencer, such as Figure 1 As shown, the pressure pulsation of the discharged gas is large, which can easily cause pipeline resonance and bring noise problems. In the prior art, the gas in the upper chamber of the compressor motor is usually discharged directly through the exhaust pipe. At this time, the gas has a certain pressure pulsation, and is mixed with liquid components such as lubricating oil components. Pressure pulsation is the main cause of the noise problem, and after the lubricating oil is discharged along with the gas, it is easy to adhere to the inner wall of the copper tube, further affecting the heat exchange efficiency. It can be seen that the compressor exhaust method in the prior art has failed to effectively solve the problems of noise and lubricating oil pollution, and is in urgent need of improvement. Summary of the invention

[0004] The object of the present invention is to provide an exhaust silencer and a compressor using the same, aiming to solve the technical problem that the exhaust method of the compressor in the prior art fails to effectively solve the noise and lubricating oil pollution.

[0005] In order to solve the above technical problems, the purpose of the present invention is achieved through the following technical solutions: to provide an exhaust silencing device, applied to a compressor, comprising a shell assembly, an air intake assembly and an exhaust assembly, the air intake assembly and the exhaust assembly are both connected to the shell assembly, the shell assembly, the air intake assembly and the exhaust assembly are each provided with mutually connected silencing areas inside, the shell assembly is provided with an oil return hole connected to its silencing area, when a gas-liquid mixture enters from the air intake assembly, after vibration reduction and silencing and liquid separation through each of the silencing areas, 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 member, the interior of the air intake member is hollow to form a first silencer area, and the side wall of the air intake member is provided with a plurality of first bypass holes connected to the silencer area of ​​the shell assembly.

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

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

[0009] Furthermore, the shell assembly also includes a first baffle; the first baffle is closer to the air intake assembly relative to the damping baffle, and the area between the first baffle and the damping baffle forms a second silencing area.

[0010] Furthermore, the shell assembly also includes a second partition, which is farther away from the damping partition relative to the first partition, and a transfer piece is arranged between the first partition and the second partition, and the interior of the transfer piece is hollow to form a third sound-absorbing area, and a fourth sound-absorbing area is formed between the second partition and the other end of the shell assembly.

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

[0012] Furthermore, the transfer member is provided with a second bypass hole communicating with the sixth silencing area.

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

[0014] Furthermore, the oil return hole is arranged in the fourth silencing area.

[0015] An embodiment of the present invention further provides a compressor, comprising the exhaust silencer as described above.

[0016] The present invention provides an exhaust silencer and a compressor using the same. The exhaust silencer is applied to a compressor. The exhaust silencer includes a shell assembly, an air intake assembly and an exhaust assembly. The air intake assembly and the exhaust assembly are both connected to the shell assembly. The shell assembly, the air intake assembly and the exhaust assembly are each provided with mutually connected silencer areas. The shell assembly is provided with an oil return hole connected with the silencer area. When a gas-liquid mixture enters from the air intake assembly, after vibration reduction and silence and liquid separation through each of the silencer areas, the gas is discharged from the exhaust assembly and the liquid is discharged from the oil return hole. The present invention is provided with mutually connected silencer areas in the shell assembly, the air intake assembly and the exhaust assembly, and a connected oil return hole is also provided in the silencer area, so that the exhaust pressure pulsation of the compressor can be effectively suppressed, the output gas can be smoother, and the noise and vibration can be reduced; the compressor lubricating oil is locked and returned to the oil pool, so as to improve the reliability of the compressor; the oil content of the compressor is reduced, and the heat exchange efficiency of the system pipeline is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0018] Figure 1 is a cross-sectional view of a conventional compressor;

[0019] Figure 2 A cross-sectional view of an exhaust muffler device provided by an embodiment of the present invention;

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

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

[0022] Description of the symbols in the figure:

[0023] 100, housing assembly; 101, oil return hole; 102, damping baffle; 103, damping elastic member; 104, first baffle; 105, second baffle; 106, transfer member; 1061, second bypass hole;

[0024] 200, air intake assembly; 201, air intake member; 2011, first bypass hole; 202, guide member;

[0025] 300. Exhaust assembly; 301. Third bypass hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

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

[0029] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0030] Combination Figure 2 As shown, an embodiment of the present invention provides an exhaust silencing device, which is applied to a compressor, including a shell assembly 100, an air intake assembly 200 and an exhaust assembly 300, wherein the air intake assembly 200 and the exhaust assembly 300 are both connected to the shell assembly 100, and the interiors of the shell assembly 100, the air intake assembly 200 and the exhaust assembly 300 are all provided with mutually connected silencing areas, and the shell assembly 100 is provided with an oil return hole 101 connected with its silencing area. When a gas-liquid mixture enters from the air intake assembly 200, after vibration reduction and silencing and liquid separation through each of the silencing areas, 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 shell assembly 100, the air intake assembly 200 and the exhaust assembly 300 are provided with mutually connected silencing areas, and the design of the silencing areas can reduce vibration and silence the gas-liquid mixture and separate the gas and liquid. Specifically, the shell assembly 100 can withstand the exhaust pressure pulsation of the gas-liquid mixture from the air intake assembly 200. The shell assembly 100 is provided with multiple silencing areas, which are connected to each other and form an integrated vibration reduction and silencing space.

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

[0033] In the above embodiment, the silencer area can cooperate with the air intake assembly 200 and the exhaust assembly 300 to minimize the noise generated during the exhaust process. By effectively reducing vibration and silencing, and reducing the reflux of lubricating oil to the exhaust silencer during the gas-liquid separation process, the purpose of reducing noise and improving the heat exchange efficiency of the system pipeline is achieved. Of course, the structure of the silencer area can be a damping structure or a combination of multiple curved channels, aiming to achieve the vibration reduction and silencing of the gas through different fluid dynamics principles.

[0034] In one embodiment, the air intake assembly 200 includes an air intake member 201 , the interior of the air intake member 201 is hollow to form a first silencing area, and the side wall of the air intake member 201 is provided with a plurality of first bypass holes 2011 communicating with the silencing area of ​​the housing assembly 100 .

[0035] In this embodiment, the interior of the air inlet 201 is a hollow structure, and its internal space forms a first silencing area (i.e. Figure 2 The hollow structure design enables the air inlet 201 to accommodate and guide the incoming gas flow, and at the same time, the inner cavity design enables the gas to effectively reduce vibration and silence when passing through the first silencer area. In the embodiment of the present invention, a total of five levels of voltage stabilization can be achieved. The first silencer area here is used to achieve the first level of voltage stabilization, and other levels of voltage stabilization will be introduced one by one below.

[0036] In order to further optimize the silencing effect, a plurality of first bypass holes 2011 are provided on the side wall of the air inlet 201, and the first bypass holes 2011 are connected to the silencing area of ​​the housing assembly 100. The first bypass holes 2011 are used to adjust the pressure pulsation peak of the main circuit fluid. When the pressure pulsation peak flows through, part of the air flow of the main circuit enters other silencing areas through the first bypass holes 2011, thereby reducing the pressure pulsation peak; when the pressure pulsation valley flows through, part of the air flow of other silencing areas flows back from the first bypass holes 2011 into the main circuit, thereby reducing the pressure pulsation valley.

[0037] Specifically, when the gas enters through the air intake member 201, it is first preliminarily silenced in the first silencer area inside the air intake member 201, and then part of the air flow enters other silencer areas of the housing assembly 100 through the first bypass hole 2011 for silencer and vibration reduction. The air intake member 201 can select appropriate materials as needed, such as materials with damping function, to further improve the silencer effect. In addition, the number, size and distribution of the first bypass holes 2011 can be optimized and adjusted according to specific silencer requirements. Appropriate aperture and distribution can effectively adjust the gas flow rate and flow direction, further improving the silencer efficiency.

[0038] In one embodiment, the air intake assembly 200 further includes a plurality of guide members 202 spaced apart on the side wall of the air intake member 201 , and the plurality of guide members 202 are inclined toward the air intake port of the air intake assembly 200 from the side wall to the center of the air intake member 201 .

[0039] In this embodiment, a plurality of guide members 202 are arranged on the side wall of the air inlet member 201, and these guide members 202 can be made of metal or other materials with high strength and wear resistance, such as fins. The main function of the guide members 202 is to guide the flow of the airflow on the side wall of the air inlet member 201 and change the flow direction of the airflow. Through the inclined design of these guide members 202, the movement trajectory of the airflow in the air inlet member 201 is adjusted, so that the airflow is more evenly distributed, and the disturbance and eddy current phenomenon of the airflow are reduced. The inclination angle of the guide member 202 can be adjusted according to the overall design of the air inlet assembly 200 and the silencing requirements. The inclination angle can be designed to a certain range to ensure that part of the airflow can be guided from the side wall of the air inlet member 201 to the first bypass hole 2011.

[0040] Furthermore, the interval arrangement of the plurality of guide members 202 helps to optimize the path of the airflow, so that the airflow can be more uniform and stable when passing through the air intake member 201. By providing the guide members 202, the air intake assembly 200 can not only improve the flow efficiency of the gas, but also effectively reduce the noise problem caused by airflow disturbance and uneven distribution, further enhancing the performance of the exhaust muffler.

[0041] In one embodiment, the shell assembly 100 includes a movable damping baffle 102 and a damping elastic member 103, the air outlet of the air intake assembly 200 is arranged 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, and the damping elastic member 103 is connected between one end of the shell assembly 100 and the damping baffle 102.

[0042] like Figure 2As shown, one end of the shell component 100 can be designed as an upper cover, and the other end of the shell component 100 can be designed as a lower cover, one end of the air intake component 200 (one end of the exhaust port of the air intake component 200) extends from the lower cover to the interior of the exhaust silencer, and the other end of the air intake component 200 (one end of the air intake port of the air intake component 200) is located outside the lower cover, and one end of the exhaust component 300 extends from the upper cover to the interior of the exhaust silencer, and the other end of the exhaust component 300 is located outside the upper cover.

[0043] In this embodiment, the damping baffle 102 of the shell assembly 100 is designed as a movable structure and can move within a certain range, so that the damping baffle 102 can adjust its position according to the change of airflow pressure or other working conditions to adapt to different working environments. The air outlet of the air intake assembly 200 is arranged relative to the damping baffle 102. After the airflow is discharged from the air outlet of the air intake assembly 200, it will first contact the damping baffle 102, thereby achieving the vibration reduction and damping effect of the airflow. The damping elastic member 103 is connected to one end of the shell assembly 100 and the damping baffle 102. The main function of the damping elastic member 103 is to absorb and consume 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 will act on the damping baffle 102, and the damping elastic member 103 provides a reaction force through its elastic characteristics, alleviates the vibration caused by the change of the airflow, and effectively reduces the noise caused by the airflow during the discharge process.

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

[0045] In one embodiment, the housing assembly 100 further includes a first baffle 104 ; the first baffle 104 is closer to the air intake assembly 200 relative to the damping baffle 102 , and the area between the first baffle 104 and the damping baffle 102 forms a second silencing area.

[0046] In this embodiment, the area between the first baffle 104 and the damping baffle 102 forms a second silencing area (i.e. Figure 2Area 2 in the air intake assembly 200). Specifically, the first baffle 104 is disposed close to the air 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 flow path of the airflow and create a second silencing area in the area between the first baffle 104 and the damping baffle 102. The second silencing area further reduces vibration and silences the airflow by decelerating the airflow. After entering the air intake assembly 200, the airflow first passes through the first silencing area, and then enters the second silencing area, 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 the high-frequency noise components in the airflow, and balance the airflow pressure. The second silencing area here is the second-stage voltage stabilization. Combined with Figure 2 As shown, when the airflow pressure entering the second silencing area is at a peak, the damping baffle 102 is pushed upward, and the damping elastic member 103 is compressed. At this time, the pulsation peak kinetic energy of the airflow is converted into the elastic energy of the damping elastic member 103 and stored; when the airflow pressure entering the second silencing area is at a peak, the damping baffle 102 moves downward, and the damping elastic member 103 stretches to release the stored elastic energy. By suppressing the peak value of the pressure pulsation in the second silencing area to store energy, and compensating and releasing energy at the peak and valley value of the pressure pulsation, the effect of weakening the peak value of the airflow pulsation is achieved, and the second-level pressure stabilization is realized.

[0047] Furthermore, the first partition 104 can be made of a material with strong sound absorption, such as a composite material, metal material or other suitable elastic material with excellent sound insulation and sound absorption performance. When selecting the material, the first partition 104 can effectively isolate high-frequency noise, and when the airflow passes through, it does not cause excessive flow resistance to the airflow, so as to avoid affecting the overall work efficiency.

[0048] In one embodiment, the shell assembly 100 also includes a second partition 105, which is away from the damping partition 102 relative to the first partition 104, and a transfer member 106 is arranged between the first partition 104 and the second partition 105. The internal hollow setting of the transfer member 106 forms a third sound-absorbing area, and a fourth sound-absorbing area is formed between the second partition 105 and the other end of the shell assembly 100.

[0049] In this embodiment, the inner hollow structure of the transfer member 106 forms a third silencing area (i.e. Figure 2 At the same time, a fourth silencing area (i.e. Figure 2The second partition 105 is arranged opposite to the first partition 104 and is located in a further area than the damping partition 102. The transfer member 106 itself has a hollow design, and a third silencing area is formed inside. When the airflow passes through the third silencing area, further silencing and vibration reduction treatment is performed.

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

[0051] At the same time, a fourth silencing area is formed between the second baffle 105 and the other end of the housing assembly 100. This area further suppresses the noise of the airflow through the action of the second baffle 105. The fourth silencing area and the third silencing area form a continuous silencing system, ensuring that the airflow undergoes multiple stages of vibration reduction and silencing treatment throughout the exhaust path. The design of the fourth silencing area can not only reduce the high-frequency noise in the airflow, but also reduce the additional noise caused by the uneven distribution of the airflow and pressure fluctuations.

[0052] In this embodiment, multiple silencer areas are formed through the synergistic effect of the second baffle 105, the first baffle 104 and the transfer member 106, thereby effectively controlling the noise and vibration in the airflow during the compressor exhaust process. Each silencer area provides different levels of vibration reduction, noise reduction and airflow guidance when the airflow passes through, thereby 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 area, and a sixth silencing area 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 be able to pass through the second baffle 105, so that the exhaust assembly 300 can be connected to the second baffle 105. The exhaust assembly 300 is provided with a hollow structure inside, and the hollow part constitutes the fifth silencing area (i.e. Figure 2 When the gas flows through the exhaust assembly 300, it first enters the fifth silencing area, which can slow down the speed of the airflow and disperse the airflow pressure, further reducing the noise and vibration in the airflow. When the gas passes through the fifth silencing area, the pressure pulsation and flow noise can be effectively attenuated.

[0055] In addition, the area between the first baffle 104 and the second baffle 105 forms a sixth silencing area (i.e. Figure 2 The sixth silencing area is set to further suppress the airflow noise that may still exist after passing through the exhaust assembly 300. The sixth silencing area increases the length of the airflow channel and enhances the disturbance of the airflow, so that the airflow can obtain more vibration reduction and noise attenuation during the flow process. The sixth silencing area can effectively eliminate the noise in the airflow. The design of the sixth silencing area can also increase the complexity of the airflow channel, thereby effectively reducing the propagation of noise.

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

[0057] In this embodiment, the second bypass hole 1061 is arranged on the transfer member 106, and the second bypass hole 1061 is connected to the sixth silencing area. The main purpose is to enable the airflow to pass through the transfer member 106 through the diversion effect of the second bypass hole 1061, so that part of the airflow flows through the second bypass hole 1061 and enters the sixth silencing area, thereby achieving further attenuation of the airflow noise. In the sixth silencing area, the airflow will undergo additional vibration reduction and silencing processes to further reduce the noise and pressure fluctuations in the airflow. The size and distribution of the second bypass hole 1061 can be optimized according to the silencing requirements. By adjusting the aperture and number of the second bypass holes 1061, the distribution of the airflow can be effectively adjusted to ensure that the airflow can be evenly processed when flowing through the sixth silencing area, thereby improving the silencing effect.

[0058] In addition, the second bypass hole 1061 enables the transfer part 106 to divert and reduce vibration of the airflow (i.e., the third level of voltage stabilization) while guiding the airflow by utilizing the connection between the second bypass hole 1061 and the sixth silencing area. The material and structural design of the transfer part 106 need to take into account the optimization of fluid dynamics and noise attenuation. Materials with certain strength, good shock resistance and low flow resistance can be selected, such as alloy metals, plastic composite materials, etc. The role of the fourth silencing area is to refract the airflow back and forth between the first partition plate 104 and the second partition plate 105, which has the effect of reducing vibration and silencing. This is the fourth level of voltage stabilization.

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

[0060] In this embodiment, the third bypass hole 301 is provided on the exhaust assembly 300, and the third bypass hole 301 is connected to the second silencing area and the sixth silencing area. When the airflow passes through the exhaust assembly 300, part of the airflow flows into the second silencing area and the sixth silencing area through the third bypass hole 301, that is, the vibration reduction and silencing functions of each silencing area are utilized, and the noise and pressure pulsation in the airflow are further reduced. The existence of the third bypass hole 301 enables 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 area and the sixth silencing area. In the second silencing area and the sixth silencing area, the airflow will undergo additional vibration reduction and silencing processes, thereby further reducing the vibration and noise of the airflow, which is the fifth level of voltage stabilization.

[0061] Furthermore, the size, position and distribution of the third bypass hole 301 can be optimized and designed according to actual needs. For example, the aperture and number of the third bypass hole 301 can be adjusted by fluid dynamics calculation to ensure the uniformity of airflow distribution. By providing the third bypass hole 301 connected to the second silencing area and the sixth silencing area on the exhaust assembly 300, this embodiment further enhances the silencing effect of the airflow, optimizes the flow path of the airflow, and improves the overall performance of the exhaust silencing device.

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

[0063] In this embodiment, the setting position of the oil return hole 101 is selected in the fourth silencer area, and the fourth silencer area is usually located on the side of the exhaust silencer. In the fourth silencer area, the airflow has passed through the vibration reduction and silencer of the first three silencer areas, and the noise and vibration in the airflow are attenuated. During the airflow discharge process, the lubricating oil or liquid in the gas can be discharged from the oil return hole 101 without interfering with the silencer effect. The position and size of the oil return hole 101 can be optimized according to the design of the liquid return amount and the airflow path. Generally, the aperture of the oil return hole 101 should be large enough to ensure that the liquid can be discharged in time, but not too large to affect the normal flow of the airflow or cause secondary excitation of noise.

[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 the liquid while reducing the noise and vibration caused by the change in airflow. In this embodiment, by setting the oil return hole 101 in the fourth silencing area, not only the discharge efficiency of the airflow and the return speed of the liquid are effectively improved, but also the cleanliness and efficient operation of the exhaust silencing device can be maintained without affecting the silencing effect.

[0065] The exhaust muffler device of the embodiment of the present invention is mainly made of steel.

[0066] The embodiment of the present invention suppresses the exhaust pressure pulsation of the compressor by continuously absorbing the peak-to-peak value of the pressure pulsation, thereby achieving the purpose of noise reduction. The entire exhaust silencing process is as follows: the gas-liquid mixture in the upper chamber of the motor enters the exhaust silencing device from the air intake assembly 200, that is, enters area 1. When the pulsating gas-liquid mixture enters area 1, the pressure pulsation peak will enter the branch circuit under the guidance of the guide 202, and then overflow from the first bypass hole 2011 to area 4 and area 6, thereby weakening the pressure pulsation peak. At the same time, part of the lubricating fluid brought out with the gas is separated from the first bypass hole 2011 to reduce the migration of the lubricating oil outward with the gas. After the airflow passes through area 1 for the first level of pressure stabilization, the main airflow then comes to area 2. When the airflow pressure entering area 2 is at a peak, the damping baffle 102 is pushed upward, and the damping elastic member 103 is compressed. At this time, the pulsation peak kinetic energy of the airflow is converted into the elastic energy of the damping elastic member 103 and stored; when the airflow pressure entering area 2 is at a peak and valley, the damping baffle 102 moves downward, and the damping elastic member 103 stretches to release the stored elastic energy. By suppressing the stored energy at the peak value of the pressure pulsation in area 2 and compensating and releasing energy at the peak and valley value of the pressure pulsation, the effect of weakening the peak value of the airflow pulsation is achieved, and the second level of pressure stabilization is realized; then the main airflow enters area 3, and the pressure pulsation of the main airflow overflows through the second bypass hole 1061 of the transfer member 106, and the third level of pressure stabilization is achieved. Then the main airflow enters area 4 from area 3, and the airflow refracts back and forth between the second partition 105 and the lower end of the exhaust silencer, forming a phase difference to reduce the pulsation peak value, and realizing the fourth level of pressure stabilization. The oil and liquid separated in the process are discharged from the oil return hole 101; then the main airflow enters area 5. When the main airflow passes through the exhaust component 300, the pulsating airflow will overflow from the third bypass hole 301 to area 6 and area 2, and further perform the fifth level of pressure stabilization. After the main airflow has undergone the above five levels of pressure pulsation suppression, the gas finally output from the exhaust component 300 becomes more stable, thereby achieving the effect of vibration reduction and noise reduction.

[0067] It should be noted that, in the embodiment of the present invention, area 1, area 3, and area 5 are the main circuit passages, and area 6 is a bypass of area 1, area 3, and area 5, which is used to adjust the peak value of the pressure pulsation of the main circuit fluid. When the peak value of the pressure pulsation of the main circuit flows through, part of the airflow of the main circuit enters area 6 through the bypass hole, thereby reducing the peak value of the pressure pulsation; when the valley value of the pressure pulsation of the main circuit flows through, part of the airflow of area 6 flows out from the bypass hole into the main circuit, thereby reducing the valley value of the pressure pulsation; at the same time, area 1, area 3, and area 5 are located at different positions of the main circuit, and there is a certain phase difference in the airflow pulsation. The different phase differences are gathered in area 6, and the pressure pulsation is offset by the phase difference between the two, which further plays a role in stabilizing the pressure.

[0068] Combination Figure 3As shown, an embodiment of the present invention further provides a compressor, comprising the exhaust silencer device as described above.

[0069] In this embodiment, the compressor includes a compressor body and an exhaust silencer, wherein the exhaust silencer is designed according to the above-mentioned design to effectively reduce the noise in the airflow in the exhaust path of the compressor. The exhaust silencer integrates a shell assembly 100, an air intake assembly 200, an exhaust assembly 300, and multiple silencer areas. Through the synergistic effect of each silencer area, the pressure fluctuation and noise in the airflow can be greatly reduced. The silencer area in this embodiment can be divided into six silencer areas, referring to Figure 2 As shown, the flow direction of the airflow flows from area 1 to area 6 in sequence, that is, corresponding to the first silencer area to the sixth silencer area. The working process of the compressor includes the gas entering the exhaust silencer through the intake assembly 200 and then being discharged by the exhaust assembly 300. During the exhaust process, the gas passes through each silencer area in sequence, including the first silencer area, the second silencer area, the third silencer area, the fourth silencer area, the sixth silencer area, etc., and is finally discharged after multiple stages of vibration reduction and silencer treatment.

[0070] In summary, the present invention can filter and suppress the pressure pulsation peak in the airflow by introducing the guide 202 and the bypass hole structure in the exhaust silencer. That is, by adjusting the airflow path, the amplitude of the pressure fluctuation is reduced, thereby reducing the noise and vibration generated when the compressor is working. In order to further improve the silencer effect, the present invention also uses a damping mechanism (i.e., a damping baffle 102 and a damping elastic member 103) to compensate and suppress the pressure pulsation peak during the exhaust process. Figure 4 As shown, the solid line in the figure represents the pressure pulsation change of the compressor in the prior art when it is running, and the dotted line represents the pressure pulsation change of the compressor of the present invention when it is running after adopting the exhaust silencer. By comparison, it can be seen that the pressure pulsation of the compressor of the present invention is lower than the pressure pulsation of the compressor of the prior art as a whole, and therefore, the noise is better solved.

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

[0072] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An exhaust silencer, applied to a compressor, characterized in that: It includes a shell assembly, an air intake assembly and an exhaust assembly, the air intake assembly and the exhaust assembly are both connected to the shell assembly, the shell assembly, the air intake assembly and the exhaust assembly are each provided with mutually connected silencing areas inside, the shell assembly is provided with an oil return hole connected with its silencing area, when a gas-liquid mixture enters from the air intake assembly, after vibration reduction and silencing and liquid separation in each of the silencing areas, the gas is discharged from the exhaust assembly, and the liquid is discharged from the oil return hole.

2. The exhaust silencer according to claim 1, characterized in that: The air intake assembly comprises an air intake member, the interior of the air intake member is hollow to form a first silencing area, and the side wall of the air intake member is provided with a plurality of first bypass holes communicating with the silencing area of ​​the shell assembly.

3. The exhaust silencer according to claim 2, characterized in that: The air intake assembly further includes a plurality of guide members spaced apart on an inner wall of the air intake member, and the plurality of guide members are inclined from the inner wall of the air intake member to a center thereof toward an air intake port of the air intake assembly.

4. The exhaust silencer according to claim 1, characterized in that: The shell assembly includes a movable damping baffle and a damping elastic member. The air outlet of the air intake assembly is arranged opposite to the damping baffle. The damping elastic member and the air intake assembly are located on both sides of the damping baffle. The damping elastic member is connected between one end of the shell assembly and the damping baffle.

5. The exhaust silencer according to claim 4, characterized in that: The shell assembly also includes a first baffle; the first baffle is closer to the air intake assembly than the damping baffle, and the area between the first baffle and the damping baffle forms a second sound-absorbing area.

6. The exhaust silencer according to claim 5, characterized in that: The shell assembly also includes a second partition, which is farther away from the damping partition relative to the first partition. A transfer piece is arranged between the first partition and the second partition. The interior of the transfer piece is hollow to form a third sound-absorbing area. A fourth sound-absorbing area is formed between the second partition and the other end of the shell assembly.

7. The exhaust silencer according to claim 6, characterized in that: One end of the exhaust component extends into the position of the second partition, the interior of the exhaust component is hollow to form a fifth silencing area, and a sixth silencing area is formed between the first partition and the second partition.

8. The exhaust silencer according to claim 7, characterized in that: The transfer member is provided with a second bypass hole communicating with the sixth silencing area.

9. The exhaust silencer according to claim 7, characterized in that: The exhaust assembly is provided with a third bypass hole communicating with the second silencing area and the sixth silencing area.

10. The exhaust silencer according to claim 6, characterized in that: The oil return hole is arranged in the fourth silencing area.

11. A compressor, characterized in that: It comprises the exhaust silencer device as described in any one of claims 1 to 10.

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