Silencer assembly, compressor and refrigeration equipment

Abstract

The utility model relates to the technical field of compressors, and provides a silencer assembly, a compressor and refrigeration equipment, the silencer assembly is used for the compressor, the compressor comprises a rotor assembly and a motor end plate, the motor end plate is arranged at the bottom of the rotor assembly, the silencer assembly is arranged on the bottom side of the motor end plate, and the silencer assembly comprises a shell, the shell comprises a base and a side wall, a noise reduction cavity with a bottom opening is defined between the base and the side wall, and an exhaust port is formed in the side wall of the shell; the fairing is arranged on the base of the shell and detachably connected with the base, the fairing is arranged on the side wall of the shell in a surrounding mode, and an exhaust channel is formed between the fairing and the side wall in a surrounding mode and used for exhausting gas exhausted from the exhaust port through the exhaust channel; in the axis direction of the rotor assembly, the fairing extends from one side of the base of the shell to one side of the motor end plate, and a preset distance is formed between the end of the extending side of the fairing and the bottom of the motor end plate. Noise reduction is achieved, and oil return is improved.

Description

Technical Field

[0001] This application relates to the field of compressor technology, and more specifically, to a muffler assembly, a compressor, and a refrigeration device. Background Technology

[0002] Currently, in existing rotary compressors, high-pressure gas from the compression cylinder is discharged through the muffler exhaust port. To prevent this high-pressure gas from overflowing and spraying onto the rotor assembly, generating airflow noise, and to prevent the rising airflow from obstructing the return of lubricating oil from the top of the stator assembly, a flange, an integral structure with the muffler, is typically installed at the muffler exhaust port to reduce the distance between the exhaust port and the motor assembly. However, during compressor assembly, especially when the rotor assembly is magnetized, it needs to be installed and disassembled with the stator mold. During this process, the muffler flange can interfere with the assembly. To avoid this interference, the height of the muffler flange is usually reduced. This results in an increased distance between the muffler exhaust port and the motor assembly, leading to increased noise and worsened oil return. Utility Model Content

[0003] This application aims to at least solve the technical problem in the related art where the increased distance between the muffler exhaust port and the motor assembly due to the integrated molding of the muffler and the muffler flange leads to increased noise and worsened oil return.

[0004] Therefore, the first aspect of this application provides a muffler assembly.

[0005] The second aspect of this application proposes a compressor.

[0006] The third aspect of this application proposes a refrigeration device.

[0007] In view of this, this application provides a muffler assembly for a compressor. The compressor includes a rotor assembly and a motor end plate. The motor end plate is disposed at the bottom of the rotor assembly, and the muffler assembly is disposed on the bottom side of the motor end plate. The muffler assembly includes: a housing, the housing including a base and a side wall, the base and the side wall enclosing a noise reduction cavity with a bottom opening, and an exhaust port on the side wall of the housing; a shroud, the shroud disposed on the base of the housing and detachably connected to the base, the shroud surrounding the side wall of the housing, and the shroud and the side wall enclosing an exhaust channel for discharging gas discharged from the exhaust port through the exhaust channel; along the axial direction of the rotor assembly, the shroud extends from one side of the base of the housing to one side of the motor end plate, and there is a preset distance between the end of the extended side of the shroud and the bottom of the motor end plate.

[0008] The muffler assembly provided in this application includes a housing and a shroud. The muffler assembly is used in a compressor. The compressor includes a rotor assembly and a motor end plate, with the motor end plate located at the bottom of the rotor assembly and the muffler assembly located on the underside of the motor end plate. By incorporating the muffler assembly into the compressor, compressor noise can be reduced, and lubricating oil return in the motor assembly can be improved.

[0009] Specifically, the muffler assembly housing includes a base and sidewalls, which together form a noise-reducing cavity with a bottom opening. This cavity reduces the noise generated by the high-pressure gas discharged from the muffler. An exhaust port is provided on the sidewall of the housing to discharge the high-pressure gas generated in the compression cylinder. The shroud is mounted on the base of the housing and is detachably connected to it. This allows the shroud to be removed during rotor assembly magnetization without affecting the assembly. After assembly, the shroud is reinstalled on the housing. This allows for an increase in the height of the shroud, reducing the gap between it and the motor assembly. This prevents high-pressure gas from overflowing and concentrating on the rotor assembly, avoiding impact noise, and also prevents high-pressure gas from rising from the bottom of the motor assembly, which could affect the return of lubricating oil from the stator assembly to the lower oil sump, thus hindering oil return.

[0010] In addition, the shroud surrounds the side wall of the housing, forming an exhaust channel between the shroud and the side wall. This exhaust channel directs the exhaust gas from the exhaust port to the silencer assembly. The exhaust channel effectively concentrates the high-pressure airflow near the stator axis, preventing high-pressure gas from overflowing and spraying onto the rotor assembly, thus avoiding noise and interference with the stator assembly's oil return. Specifically, along the rotor assembly's axial direction, the shroud extends from the base side of the housing towards the motor end plate side, with a predetermined distance between the extended end of the shroud and the bottom of the motor end plate. That is, along the compressor's height, the shroud extends from the bottom of the housing towards the motor assembly, maintaining a predetermined distance from the bottom of the motor end plate to reduce the distance between the exhaust port and the motor assembly, preventing high-pressure gas overflow. By designing the housing and shroud as separate units, they can be disassembled during the rotor assembly magnetization process. This increases the height of the shroud, minimizing the distance between the shroud and the motor assembly, concentrating the rising airflow near the stator axis, reducing noise, and improving the compressor's oil return performance.

[0011] The muffler assembly according to the above-described technical solution of this application may also have the following additional technical features:

[0012] In some technical solutions, optionally, the preset spacing is H, and the preset spacing H satisfies: 0 < H ≤ 5 mm.

[0013] In this technical solution, by setting a preset distance between the end of the extended side of the rectifier and the bottom of the motor end plate between 0mm and 5mm, it can be ensured that the gap between the rectifier and the motor end plate is neither too small, which would cause assembly difficulties or friction, nor too large, which would cause high-pressure gas to overflow. This ensures the normal operation of the compressor while minimizing noise and improving oil return.

[0014] In some technical solutions, the fairing and the base can be connected by a snap-fit ​​structure; or the fairing and the base can be connected by a threaded structure.

[0015] In this technical solution, the shroud and the base are connected by a connection structure such as a snap-fit ​​structure or a threaded structure, thereby enabling a separate design and detachable connection between the shroud and the base, which facilitates the assembly, noise reduction and optimized oil return of the compressor.

[0016] In some technical solutions, optionally, the fairing includes: a fairing body; a limiting protrusion ring disposed on the inner wall of the fairing body and surrounding the fairing body, the limiting protrusion ring abutting against the base for adjusting the installation position of the fairing.

[0017] In this technical solution, the shroud includes a shroud body and a limiting ring. The limiting ring is located on the inner wall of the shroud body and surrounds it, abutting against the base. In other words, the limiting ring abuts against the base of the housing, meaning the shroud is mounted on the base of the housing via the limiting ring. This allows for adjustment of the shroud's installation position; specifically, the limiting ring restricts the shroud's installation height, enabling adjustment of the shroud's installation height. Simultaneously, because the limiting ring protrudes from the inner wall of the shroud body, it also helps to slow down the airflow velocity through the shroud body. This design effectively controls noise generated by high-speed airflow impact and also improves the compressor's oil return condition, as the reduced airflow velocity helps reduce oil splashing and evaporation, thus promoting smooth oil return.

[0018] In some technical solutions, optionally, the number of limiting protrusions is multiple, and the multiple limiting protrusions are evenly distributed along the height direction of the fairing.

[0019] In this technical solution, multiple limiting protrusions are evenly distributed along the height direction of the shroud on the inner wall of the shroud. This even distribution of multiple limiting protrusions not only allows for adjustment of the shroud's installation height, ensuring the end of the shroud remains within a preset distance from the bottom of the motor end plate and guaranteeing normal compressor operation, but also enhances the shroud's ability to regulate airflow velocity, further improving its noise reduction and oil return performance. Each limiting protrusion effectively slows the airflow velocity across its surface, thereby reducing airflow noise and improving compressor oil return. Furthermore, the synergistic effect of multiple limiting protrusions allows the shroud to maintain stable noise reduction and oil return effects over a wider flow velocity range.

[0020] In some technical solutions, optionally, the end of the cover near the motor end plate is folded outward to increase the exhaust area between the exhaust channel and the rotor assembly, thereby reducing the flow rate of the airflow discharged from the exhaust channel.

[0021] In this technical solution, the end of the cover near the motor end plate is folded outward to increase the exhaust area between the exhaust channel and the rotor assembly, thereby reducing the flow rate of the airflow exiting the exhaust channel. Specifically, the end of the cover near the motor end plate is folded outward to increase the exhaust area between the exhaust channel and the rotor assembly, effectively reducing the flow rate of the airflow exiting the exhaust channel, thus lowering noise and facilitating lubricant return.

[0022] In some technical solutions, optionally, the wall thickness of the cover is T, and the wall thickness T of the cover satisfies: 0.5mm≤T≤3mm.

[0023] In this technical solution, the wall thickness of the shroud is set to T, which satisfies the condition: 0.5mm ≤ T ≤ 3mm. This control of the shroud's wall thickness not only ensures sufficient structural strength to withstand various pressures during compressor operation but also achieves a lightweight design, reducing costs. The lighter weight helps reduce overall energy consumption and improve compressor operating efficiency. Simultaneously, the reasonable wall thickness range makes the shroud easier to process and control during manufacturing, thus ensuring its consistency and reliability.

[0024] In some technical solutions, the fairing may optionally be a one-piece stamped structure.

[0025] In this technical solution, the fairing adopts a one-piece stamped structure. This design not only simplifies the fairing manufacturing process but also significantly improves its overall performance and reliability.

[0026] Specifically, the one-piece stamping structure means that the fairing is formed in one piece through a stamping process. This manufacturing method eliminates the seams that may exist in traditional splicing processes, thereby reducing the risk of performance degradation or failure of the fairing due to loosening of seams during use. At the same time, the one-piece stamping structure also gives the fairing higher strength and better durability, enabling it to withstand the pressure during compressor operation.

[0027] In some technical solutions, the fairing shape can optionally be set to any one of cylindrical, conical, and stepped shapes.

[0028] In this technical solution, the fairing shape can be set to any one of cylindrical, conical, or stepped shapes. This allows for meeting the specific performance requirements of the fairing in different application scenarios.

[0029] In some technical solutions, the fairing may optionally include a polymer plastic fairing.

[0030] In this technical solution, the compressor performance is improved by setting the shroud to be made of polymer plastic. Since polymer plastic shroud is an insulating material, it has high strength, high temperature resistance and excellent electrical insulation properties.

[0031] According to a second aspect of this application, a compressor is also proposed, comprising: a muffler assembly as described above, and a stator assembly sleeved on a rotor assembly; and a housing, in which the stator assembly and the rotor assembly are disposed.

[0032] The compressor provided in this application includes the silencer assembly of the above-mentioned technical solution, and therefore has all the beneficial effects of the silencer assembly, which will not be repeated here.

[0033] In addition, the compressor also includes a stator assembly and a housing. The stator assembly is fitted onto the rotor assembly, and both the stator and rotor assemblies are housed within the housing. The housing, as the compressor's external protective structure, not only provides necessary mechanical support but also serves for protection and heat dissipation.

[0034] According to a third aspect of this application, a refrigeration device is also proposed, comprising: a compressor as described above.

[0035] The refrigeration equipment provided in this application includes the compressor of the above-mentioned technical solution, and therefore has all the beneficial effects of the compressor, which will not be repeated here.

[0036] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0037] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0038] Figure 1 This is a cross-sectional structural diagram of the compressor section according to an embodiment of this application;

[0039] Figure 2 This is a schematic diagram of the fairing structure according to one embodiment of this application;

[0040] Figure 3 for Figure 2 A schematic diagram of the AA cross-sectional structure of the fairing in the embodiment shown;

[0041] Figure 4 This is a schematic diagram of the structure of a refrigeration device according to an embodiment of this application.

[0042] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0043] 100 Muffler assembly, 110 Rotor assembly, 120 Motor end plate, 130 Housing, 132 Base, 134 Side wall, 136 Noise reduction cavity, 138 Exhaust port, 140 Fairing, 142 Cover, 144 Limiting ring, 150 Exhaust passage, 200 Compressor, 210 Stator assembly, 220 Housing, 300 Refrigeration equipment. Detailed Implementation

[0044] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0045] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0046] The following reference Figures 1 to 4 This application describes a muffler assembly 100, a compressor 200, and a refrigeration device 300 provided according to some embodiments of the present application.

[0047] like Figures 1 to 4 As shown, Figure 1 This is a cross-sectional structural diagram of a compressor 200 according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a fairing 140 according to an embodiment of this application; Figure 3 for Figure 2 A schematic diagram of the AA cross-sectional structure of the fairing in the embodiment shown; Figure 4 This is a schematic diagram of the structure of a refrigeration device 300 according to an embodiment of this application.

[0048] One embodiment of this application provides a muffler assembly 100 for a compressor 200. The compressor 200 includes a rotor assembly 110 and a motor end plate 120. The motor end plate 120 is disposed at the bottom of the rotor assembly 110, and the muffler assembly 100 is disposed on the bottom side of the motor end plate 120. The muffler assembly 100 includes: a housing 130, which includes a base 132 and a side wall 134. The base 132 and the side wall 134 enclose a noise reduction cavity 136 with a bottom opening. An exhaust port 138 is provided on the side wall 134 of the housing 130; and a shroud 14. 0. The shroud 140 is disposed on the base 132 of the housing 130 and is detachably connected to the base 132. The shroud 140 surrounds the side wall 134 of the housing 130, and the shroud 140 and the side wall 134 form an exhaust channel 150 for discharging the gas discharged from the exhaust port 138 through the exhaust channel 150. Along the axial direction of the rotor assembly 110, the shroud 140 extends from one side of the base 132 of the housing 130 to one side of the motor end plate 120, and there is a preset distance between the end of the extended side of the shroud 140 and the bottom of the motor end plate 120.

[0049] Specifically, such as Figure 1 and Figure 2 As shown, the muffler assembly 100 includes a housing 130 and a shroud 140. The muffler assembly 100 is used in the compressor 200. The compressor 200 includes a rotor assembly 110 and a motor end plate 120, with the motor end plate 120 disposed at the bottom of the rotor assembly 110 and the muffler assembly 100 disposed on the underside of the motor end plate 120. By providing the muffler assembly 100 in the compressor 200, the noise of the compressor 200 can be reduced, and the lubricating oil return flow of the motor assembly can be improved.

[0050] Specifically, the housing 130 of the muffler assembly 100 includes a base 132 and a side wall 134. The base 132 and the side wall 134 enclose a noise-reducing cavity 136 with a bottom opening. The noise-reducing cavity 136 can reduce the noise generated by the high-pressure gas discharged from the muffler. An exhaust port 138 is provided on the side wall 134 of the housing 130. The function of the exhaust port 138 is to discharge the high-pressure gas generated in the compression cylinder through the exhaust port 138 of the muffler. The rectifier 140 is mounted on the base 132 of the housing 130 and is detachably connected to the base 132. That is, the rectifier 140 can be detachably connected to the housing 130. This allows the rectifier 140 to be removed when the rotor assembly 110 is magnetized without affecting the assembly of the rotor assembly 110. After assembly, the rectifier 140 is then installed back onto the housing 130. Because of this, the height of the rectifier 140 can be increased, thereby reducing the gap between the rectifier 140 and the motor assembly. This prevents high-pressure gas from overflowing and being concentrated on the rotor assembly 110, avoiding impact noise, and also prevents high-pressure gas from rising from the bottom of the motor assembly, which would affect the return of the lubricating oil in the stator assembly 210 to the lower oil sump, thus affecting oil return.

[0051] Additionally, the fairing 140 surrounds the side wall 134 of the housing 130, and the fairing 140 and the side wall 134 together form an exhaust channel 150. The exhaust channel 150 allows the gas discharged from the exhaust port 138 to be discharged through the exhaust channel 150 to the muffler assembly. The exhaust channel 150 effectively concentrates the high-pressure airflow near the stator axis, preventing high-pressure gas from overflowing and spraying onto the rotor assembly 110, thus avoiding noise and affecting the oil return of the stator assembly 210. Specifically, along the axial direction of the rotor assembly 110, such as... Figure 1 As shown, the rotor assembly 110 has an axial direction of Y. The shroud 140 extends from the base 132 side of the housing 130 towards the motor end plate 120 side, and there is a preset distance between the end of the extended side of the shroud 140 and the bottom of the motor end plate 120. That is, along the height direction of the compressor 200, which is the axial direction of the rotor assembly 110, the shroud 140 extends from the bottom of the housing 130 towards the motor assembly, and has a preset distance from the bottom of the motor end plate 120, thereby reducing the distance between the exhaust port 138 and the motor assembly and preventing high-pressure gas from overflowing. By designing the housing 130 and the shroud 140 separately, they can be disassembled during the magnetization and assembly of the rotor assembly 110. This increases the height of the shroud 140, minimizes the distance between the shroud 140 and the motor assembly, concentrates the rising airflow near the stator axis, reduces noise, and improves the problem of poor oil return in the compressor 200.

[0052] Specifically, in existing rotary compressors, high-pressure gas in the compression cylinder is discharged through the muffler exhaust port. To prevent the high-pressure gas from overflowing and spraying onto the rotor assembly, generating airflow noise, and to prevent the rising airflow from obstructing the return of lubricating oil from the top of the stator assembly, a flange integrated with the muffler is typically installed at the muffler exhaust port to reduce the distance between the exhaust port and the motor assembly. However, during compressor assembly, especially when the rotor assembly is magnetized, it needs to be installed and disassembled with the stator mold. During this process, the muffler flange can interfere with the assembly. To avoid interference, the height of the muffler flange is usually reduced, which increases the distance between the muffler exhaust port and the motor assembly, leading to increased noise and worsened oil return.

[0053] This application addresses this issue, such as Figure 1 and Figure 2 As shown, this application provides a split-design muffler assembly 100. The muffler assembly 100 includes two parts: a housing 130 and a shroud 140. The housing 130 is formed by a base 132 and a side wall 134, creating a noise-reducing cavity 136 with a bottom opening, used to reduce noise generated when high-pressure gas is discharged. An exhaust port 138 is provided on the side wall 134 of the housing 130 for discharging high-pressure gas generated in the compression cylinder through the muffler's exhaust port 138. The shroud 140 is mounted on the base 132 of the housing 130 and is detachably connected to the base 132. The shroud 140 surrounds the side wall 134 of the housing 130, forming an exhaust channel 150 between the shroud 140 and the side wall 134, for discharging the gas discharged from the exhaust port 138 through the exhaust channel 150 out of the muffler assembly 100.

[0054] Along the axial direction of the rotor assembly 110, the shroud 140 extends from the base 132 side of the housing 130 towards the motor end plate 120 side, and there is a predetermined gap between the end of the extended side of the shroud 140 and the bottom of the motor end plate 120. This design can reduce the gap between the exhaust port 138 and the motor assembly, preventing high-pressure gas from overflowing. At the same time, by designing the housing 130 and the shroud 140 separately, the shroud 140 can be easily disassembled during the magnetization assembly of the rotor assembly 110, thereby avoiding interference of the muffler assembly 100 with the assembly process.

[0055] After the rotor assembly 110 is magnetized, the shroud 140 can be reinstalled, and its height adjusted to minimize the distance between the shroud 140 and the motor assembly. This concentrates the rising airflow near the stator axis, allowing the airflow to enter the motor assembly through the motor end plate 120. The airflow then passes through the gaps in the winding terminals and the openings in the rotor assembly 110 to reach the top of the stator assembly 210. This prevents the high-pressure airflow from impacting the counterweight of the rotor assembly 110 and generating noise, and also prevents the high-pressure airflow from escaping through the gap between the stator assembly 210 and the housing 220, which would affect the lubricant return and improve the compressor 200's poor oil return problem. Furthermore, it prevents the high-pressure airflow from cutting and impacting the returning oil during overflow, thus avoiding secondary atomization.

[0056] The muffler assembly 100 provided in this application solves the problem of interference between the muffler and the compressor 200 assembly process in the prior art through its split design and detachable shroud 140, and effectively reduces noise and improves oil return. Furthermore, the muffler assembly 100 provided in this application has the advantages of simple structure, ease of manufacture and assembly, and is suitable for various rotary compressors 200.

[0057] In some embodiments, optionally, such as Figure 1 As shown, the preset spacing is H, and the preset spacing H satisfies: 0 < H ≤ 5 mm.

[0058] Specifically, such as Figure 1 As shown, by setting the preset distance H between the end of the extended side of the rectifier 140 and the bottom of the motor end plate 120 to be between 0mm and 5mm, it can be ensured that the gap between the rectifier 140 and the motor end plate 120 is neither too small, which would cause assembly difficulties or friction, nor too large, which would cause high-pressure gas to overflow. This ensures the normal operation of the compressor 200 while minimizing noise and improving oil return.

[0059] Specifically, precise control of the preset distance between the shroud 140 and the motor end plate 120 is crucial. Too small a distance may increase assembly difficulty and even cause friction between the shroud 140 and the motor end plate 120, affecting the stability and durability of the compressor 200. Too large a distance, on the other hand, may fail to effectively prevent the leakage of high-pressure gas, thus weakening the silencing effect, increasing noise, and potentially affecting the lubricating oil return of the stator assembly 210. By controlling the distance H between the extended end of the shroud 140 and the bottom of the motor end plate 120 within the range of 0mm to 5mm, not only is noise reduction helpful, but the oil return of the compressor 200 is also effectively improved, thereby enhancing the overall performance and stability of the compressor 200. Furthermore, the detachable connection design between the shroud 140 and the housing 130 allows for easy disassembly of the shroud 140 during compressor assembly and maintenance, further improving the maintainability and ease of use of the compressor 200.

[0060] In specific applications, the preset distance H between the end of the extended side of the fairing 140 and the bottom of the motor end plate 120 can be set to 1mm, 2mm, 2.5mm, 3mm, 4mm or 5mm. The specific distance can be selected according to the actual use situation, and will not be listed here.

[0061] In some embodiments, the fairing 140 and the base 132 may be connected by a snap-fit ​​structure; or the fairing 140 and the base 132 may be connected by a threaded structure.

[0062] Specifically, the shroud 140 and the base 132 are connected by a connection structure such as a snap-fit ​​structure or a threaded structure, thereby enabling a separate design and detachable connection between the shroud 140 and the base 132, which facilitates the assembly, noise reduction and optimized oil return of the compressor 200.

[0063] Specifically, when the rectifier 140 and the base 132 are connected by a snap-fit ​​structure, snap-fit ​​protrusions can be designed on the edge of the rectifier 140, while corresponding snap-fit ​​grooves are provided on the base 132. During assembly, simply align the snap-fit ​​protrusions of the rectifier 140 with the snap-fit ​​grooves of the base 132, and then gently press the rectifier 140 until the snap-fit ​​protrusions engage with the snap-fit ​​grooves. This connection method is not only simple and quick to operate, but also provides a secure and reliable connection. Furthermore, due to the snap-fit ​​structure, the rectifier 140 is not easily dislodged under external force, thus ensuring the stable operation of the compressor 200. When it is necessary to disassemble the rectifier 140, simply pry the snap-fit ​​protrusions gently to release them from the snap-fit ​​grooves. This disassembly method is also simple and quick, and will not cause any damage to the rectifier 140 or the base 132.

[0064] Specifically, when the fairing 140 and the base 132 are connected by a threaded structure, an internal thread can be designed on the bottom of the fairing 140, while a corresponding external thread is provided on the base 132. During assembly, simply screw the internal thread of the fairing 140 onto the external thread of the base 132 until the required tightness is achieved. This connection method is not only strong and reliable but also has a certain sealing performance, preventing high-pressure gas from leaking out from the gap between the fairing 140 and the base 132. When it is necessary to disassemble the fairing 140, simply use a suitable tool such as a wrench to unscrew the fairing 140 from the base 132. This disassembly method is also simple and quick, and will not cause any damage to the fairing 140 or the base 132.

[0065] In practical applications, the fairing 140 and the base 132 can also be connected by adhesive or bonding.

[0066] In some embodiments, optionally, such as Figure 2 As shown, the fairing 140 includes: a fairing body 142; a limiting protrusion ring 144, which is disposed on the inner wall of the fairing body 142 and surrounds the fairing body 142. The limiting protrusion ring 144 abuts against the base 132 and is used to adjust the installation position of the fairing 140.

[0067] Specifically, such as Figure 2 and Figure 3 As shown, the fairing 140 includes a fairing body 142 and a limiting protrusion ring 144. The limiting protrusion ring 144 is disposed on the inner wall of the fairing body 142 and surrounds the fairing body 142. The limiting protrusion ring 144 abuts against the base 132, that is, the limiting protrusion ring 144 abuts against the base 132 of the housing 130. In other words, the fairing 140 is mounted on the base 132 of the housing 130 via the limiting protrusion ring 144. This allows for adjustment of the installation position of the fairing 140, specifically by limiting the installation height of the fairing 140 through the limiting protrusion ring 144, thus enabling adjustment of the installation height of the fairing 140. Simultaneously, since the limiting protrusion ring 144 protrudes from the inner wall of the fairing body 142, it can also be used to slow down the airflow velocity passing through the interior of the fairing body 142. This design effectively controls the noise generated by the impact of high-speed airflow, and also improves the oil return condition of the compressor 200, because the reduced airflow speed helps to reduce oil splashing and evaporation, thereby promoting the smooth return of oil.

[0068] Specifically, a limiting protrusion 144 is added to the inner wall of the cover 142 of the fairing 140. The limiting protrusion 144 is located on the inner wall of the cover 142 and extends along the entire circumference of the cover 142. Its main function is to allow the limiting protrusion 144 to abut against the base 132 of the housing 130. In other words, the fairing 140 is mounted on the base 132 of the housing 130 via the limiting protrusion 144. This allows for adjustment of the installation position of the fairing 140, specifically by limiting its installation height through the limiting protrusion 144. Simultaneously, it effectively slows down the airflow velocity inside the cover 142 through physical obstruction.

[0069] Specifically, the shape and size of the limiting protrusion 144 can be designed to ensure that it can abut against the base 132, thereby adjusting the installation height of the shroud 140. Simultaneously, it minimizes airflow velocity without affecting normal airflow discharge. This not only considers the principles of aerodynamics but also incorporates the airflow characteristics of the compressor 200 during actual operation, ensuring that the shroud 140 can achieve optimal noise reduction and oil return effects under various operating conditions.

[0070] Furthermore, the limiting protrusion 144 abuts against the base 132. The addition of the limiting protrusion 144 does not negatively affect the connection method between the fairing 140 and the base 132, whether it is a snap-fit ​​connection or a threaded connection. On the contrary, this setting allows the fairing 140 to further improve its noise reduction and performance optimization capabilities while maintaining its original detachability.

[0071] In some embodiments, optionally, such as Figure 2 As shown, there are multiple limiting protrusions 144, which are evenly distributed along the height direction of the fairing 140.

[0072] Specifically, such as Figure 2 and Figure 3As shown, multiple limiting protrusions 144 are provided, and they are evenly distributed on the inner wall of the housing 142 along the height direction P of the shroud 140, that is, along the extension direction of the shroud 140. This even distribution of multiple limiting protrusions 144 not only allows for adjustment of the installation height of the shroud 140, ensuring that the end of the shroud 140 and the bottom of the motor end plate 120 remain within a preset distance, guaranteeing the normal operation of the compressor 200, but also enhances the shroud 140's ability to regulate airflow velocity, further improving its noise reduction and oil return performance. Since each limiting protrusion 144 effectively slows down the airflow velocity across its surface, it reduces airflow noise and improves the oil return of the compressor 200. Furthermore, the synergistic effect of multiple limiting protrusions 144 allows the shroud 140 to maintain stable noise reduction and oil return effects over a wider flow velocity range.

[0073] Specifically, the evenly distributed design of multiple limiting protrusions 144 allows for different gradient adjustments to the installation height of the shroud 140, ensuring that the end of the shroud 140 and the bottom of the motor end plate 120 remain within a preset distance, guaranteeing the normal operation of the compressor 200. The design also considers the airflow characteristics inside the shroud 140 and the operating requirements of the compressor 200. By calculating the position, shape, and size of each limiting protrusion 144, it can be ensured that they maximize noise reduction and oil return without affecting normal airflow discharge. In specific applications, the limiting protrusions 144 can be configured as either annular protrusions or annular grooves.

[0074] In some embodiments, optionally, such as Figure 1 and Figure 2 As shown, the end of the cover 142 near the motor end plate 120 is folded outward to increase the exhaust area between the exhaust channel 150 and the rotor assembly 110, thereby slowing down the flow rate of the airflow discharged from the exhaust channel 150.

[0075] Specifically, such as Figure 2 and Figure 3 As shown, by folding the end of the cover 142 near the motor end plate 120 outwards, the exhaust area between the exhaust passage 150 and the rotor assembly 110 is increased, thereby reducing the flow rate of the airflow discharged from the exhaust passage 150. Specifically, the end of the cover 142 near the motor end plate 120 is folded outwards to increase the exhaust area between the exhaust passage 150 and the rotor assembly 110, effectively reducing the flow rate of the airflow discharged from the exhaust passage 150, thus reducing noise and facilitating the return of lubricating fluid.

[0076] Specifically, the outward folding design at the end of the shroud 142 not only optimizes the structure of the exhaust passage 150 but also improves the exhaust performance of the shroud 140. By increasing the exhaust area, the airflow can be more dispersed during discharge, thereby reducing the airflow velocity and noise generation. At the same time, the reduced airflow velocity also helps improve the oil return condition of the compressor 200, because the slower airflow velocity helps the oil fall back and accumulate, reducing oil splashing and evaporation.

[0077] In some embodiments, optionally, such as Figure 2 and Figure 3 As shown, the wall thickness of the cover 142 is T, and the wall thickness T of the cover 142 satisfies: 0.5mm≤T≤3mm.

[0078] Specifically, such as Figure 2 and Figure 3 As shown, by setting the wall thickness of the cover 142 to T, the wall thickness T of the cover 142 satisfies: 0.5mm ≤ T ≤ 3mm. This control of the wall thickness of the cover 142 not only ensures that the rectifier cover 140 has sufficient structural strength to withstand various pressures during the operation of the compressor 200, but also achieves a lightweight design of the rectifier cover 140, reducing costs. The lighter weight helps reduce the overall energy consumption of the compressor and improves the operating efficiency of the compressor 200. At the same time, the reasonable wall thickness range also makes the rectifier cover 140 easier to process and control quality during manufacturing, thereby ensuring the consistency and reliability of the rectifier cover 140.

[0079] Specifically, when the wall thickness T of the fairing 142 is between 0.5 mm and 3 mm, the fairing 140 can maintain good rigidity and durability, while avoiding the increase in weight and cost caused by excessive wall thickness. In addition, this wall thickness range also enables the fairing 140 to maintain stable performance when subjected to airflow impact and vibration, reducing the risk of performance degradation or failure due to structural deformation.

[0080] Furthermore, the setting of the wall thickness of the cover 142 also needs to comprehensively consider factors such as the material selection, manufacturing process, and application scenario of the fairing 140. For example, for the compressor 200 operating in high-temperature or high-pressure environments, it may be necessary to select a higher-strength material and appropriately increase the wall thickness to improve the high-temperature and high-pressure resistance of the fairing 140. However, in most cases, a wall thickness range of 0.5mm to 3mm is sufficient to meet the basic performance and lightweight requirements of the fairing 140. In specific applications, the wall thickness T of the cover 142 can be specifically set to 0.5mm, 0.8mm, 1mm, 2mm, 2.5mm, or 3mm, depending on the actual usage, and will not be listed here.

[0081] In some embodiments, optionally, such as Figure 1 and Figure 2 As shown, the fairing 140 is a one-piece stamped structure.

[0082] Specifically, such as Figure 2 As shown, the fairing 140 adopts a one-piece stamped structure. This design not only simplifies the manufacturing process of the fairing 140, but also significantly improves its overall performance and reliability.

[0083] Specifically, the one-piece stamping structure means that the fairing 140 is formed in one piece through a stamping process. This production method eliminates the seams that may exist in traditional splicing processes, thereby reducing the risk of performance degradation or failure of the fairing 140 due to loosening of seams during use. At the same time, the one-piece stamping structure also gives the fairing 140 higher strength and better durability, enabling it to withstand the pressure during the operation of the compressor 200.

[0084] Specifically, the one-piece stamping structure makes the wall thickness of the fairing 140 more uniform, reducing stress concentration and deformation problems caused by uneven wall thickness. Furthermore, this structure makes the surface of the fairing 140 smoother, reducing airflow resistance and turbulence on the surface of the fairing 140, thereby improving the operating efficiency and noise reduction performance of the compressor 200. At the same time, the one-piece stamping structure also shortens the manufacturing cycle of the fairing 140, eliminating the need for additional splicing processes and reducing costs.

[0085] In some embodiments, the fairing 140 may optionally be configured as any one of a cylindrical shape, a conical shape, and a stepped shape.

[0086] Specifically, the shape of the fairing 140 is set to any one of cylindrical, conical, or stepped shapes. This allows the fairing 140 to meet the specific performance requirements of different application scenarios.

[0087] Specifically, the different shapes of the fairing 140 have a significant impact on airflow and structural strength. A cylindrical fairing 140 typically offers a more uniform airflow distribution and lower airflow resistance, making it suitable for applications requiring high airflow uniformity. A conical fairing 140 better guides airflow, reducing turbulence and eddies, making it suitable for applications requiring optimized airflow paths and noise reduction. A stepped fairing 140 combines the advantages of both, providing different airflow effects at different stages, making it suitable for applications with more complex airflow control requirements.

[0088] Furthermore, the shape design of the fairing 140 also needs to consider its structural strength and stability. Different shaped fairings 140 will experience different stress conditions and distributions when subjected to the internal pressure and airflow impact of the compressor 200. Therefore, during the design process, factors such as the material, wall thickness, and connection method of the fairing 140 need to be comprehensively considered to ensure that it meets the strength and stability requirements under actual working conditions.

[0089] In some embodiments, the fairing 140 may optionally include a polymer plastic fairing.

[0090] Specifically, by setting the shroud 140 to be a polymer plastic shroud, since the polymer plastic shroud is an insulating material with high strength, high temperature resistance and excellent electrical insulation properties, the performance of the compressor 200 can be improved.

[0091] Specifically, the polymer plastic fairing can be made of PEEK, PTFE, or PBT materials. PEEK (Polyetheretherketone) possesses high strength, high temperature resistance, and excellent electrical insulation properties. PTFE (Polytetrafluoroethylene) and PBT (Polybutylene Terephthalate) also exhibit high strength, high temperature resistance, and excellent electrical insulation properties, preventing static electricity generation and ensuring electrical safety. This not only improves the performance and reliability of the fairing 140 but also enables a lightweight design.

[0092] According to the second aspect of this application, such as Figure 4 As shown, a compressor 200 is also proposed, including: a muffler assembly 100 as in the above embodiment, and a stator assembly 210, which is sleeved on the rotor assembly 110; and a housing 220, in which the stator assembly 210 and the rotor assembly 110 are disposed.

[0093] The compressor 200 provided in this application, since it includes the muffler assembly 100 of the above embodiments, has all the beneficial effects of the muffler assembly 100, which will not be repeated here. In specific applications, the compressor 200 may specifically be a rotary compressor 200.

[0094] In addition, the compressor 200 also includes a stator assembly 210 and a housing 220, wherein the stator assembly 210 is sleeved on the rotor assembly 110, and the stator assembly 210 and the rotor assembly 110 are disposed within the housing 220. The housing 220, as the external protective structure of the compressor 200, not only provides necessary mechanical support, but also plays a role in protection and heat dissipation.

[0095] According to the third aspect of this application, such as Figure 4 As shown, a refrigeration device 300 is also proposed, including: a compressor 200 as described in the above embodiment.

[0096] The refrigeration equipment 300 provided in this application includes the compressor 200 of the above embodiments, and therefore has all the beneficial effects of the compressor 200, which will not be repeated here. In specific applications, the refrigeration equipment 300 may be specifically an air conditioning system, an air conditioner, or an air conditioner, etc.

[0097] In the description of this application, the term "multiple" refers to two or more. Unless otherwise expressly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0098] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0099] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A muffler assembly, characterized in that, For use in a compressor, the compressor includes a rotor assembly and a motor end plate, the motor end plate being disposed at the bottom of the rotor assembly, and a muffler assembly being disposed on the bottom side of the motor end plate, the muffler assembly comprising: The housing includes a base and a side wall, the base and the side wall enclosing a noise reduction cavity with a bottom opening, and an exhaust port is provided on the side wall of the housing; A fairing is disposed on the base of the housing and detachably connected to the base. The fairing surrounds the side wall of the housing, and the fairing and the side wall form an exhaust channel for discharging the gas discharged from the exhaust port through the exhaust channel. Along the axial direction of the rotor assembly, the shroud extends from one side of the base of the housing toward one side of the motor end plate, and there is a predetermined distance between the end of the extended side of the shroud and the bottom of the motor end plate.

2. The muffler assembly according to claim 1, characterized in that, The preset spacing is H, and the preset spacing H satisfies: 0 < H ≤ 5 mm.

3. The muffler assembly according to claim 1, characterized in that, The fairing and the base are connected by a snap-fit ​​structure; or the fairing and the base are connected by a threaded structure.

4. The muffler assembly according to claim 1, characterized in that, The fairing includes: Cover; A limiting protrusion ring is disposed on the inner wall of the cover and surrounds the cover. The limiting protrusion ring abuts against the base and is used to adjust the installation position of the fairing.

5. The muffler assembly according to claim 4, characterized in that, The number of the limiting protrusions is multiple, and the multiple limiting protrusions are evenly distributed along the height direction of the fairing.

6. The muffler assembly according to claim 4, characterized in that, The end of the cover near the motor end plate is folded outward to increase the exhaust area between the exhaust channel and the rotor assembly, thereby reducing the flow rate of the airflow discharged from the exhaust channel.

7. The muffler assembly according to claim 4, characterized in that, The wall thickness of the cover is T, and the wall thickness T of the cover satisfies: 0.5mm≤T≤3mm.

8. The muffler assembly according to any one of claims 1 to 7, characterized in that, The fairing is a one-piece stamped structure.

9. The muffler assembly according to any one of claims 1 to 7, characterized in that, The fairing is configured to have any one of the following shapes: cylindrical, conical, or stepped.

10. The muffler assembly according to any one of claims 1 to 7, characterized in that, The fairing includes a polymer plastic fairing.

11. A compressor, characterized in that, Including the muffler assembly as described in any one of claims 1 to 10, and A stator assembly, which is sleeved on the rotor assembly; The housing contains the stator assembly and the rotor assembly.

12. A refrigeration device, characterized in that, Includes the compressor as described in claim 11.

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